blob: 450bfedbe2f4c0f88cacc44ec504872487279faa [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * fs/nfs/nfs4proc.c
3 *
4 * Client-side procedure declarations for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38#include <linux/mm.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070039#include <linux/delay.h>
40#include <linux/errno.h>
41#include <linux/string.h>
Trond Myklebust652f89f2011-12-09 19:05:58 -050042#include <linux/ratelimit.h>
43#include <linux/printk.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090044#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070045#include <linux/sunrpc/clnt.h>
46#include <linux/nfs.h>
47#include <linux/nfs4.h>
48#include <linux/nfs_fs.h>
49#include <linux/nfs_page.h>
Bryan Schumaker9b7160c2011-04-13 14:31:30 -040050#include <linux/nfs_mount.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070051#include <linux/namei.h>
Trond Myklebust02a913a2005-10-18 14:20:17 -070052#include <linux/mount.h>
Benny Halevy99fe60d2009-04-01 09:22:29 -040053#include <linux/module.h>
Trond Myklebust6926afd2012-01-07 13:22:46 -050054#include <linux/nfs_idmap.h>
Aneesh Kumar K.V64c2ce82010-12-09 11:35:25 +000055#include <linux/xattr.h>
Andy Adamsonc7a360b2011-01-25 19:15:32 -050056#include <linux/utsname.h>
Jeff Laytond3103102011-12-01 22:44:39 +010057#include <linux/freezer.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070058
Trond Myklebust4ce79712005-06-22 17:16:21 +000059#include "nfs4_fs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070060#include "delegation.h"
Trond Myklebust101070c2008-02-19 20:04:23 -050061#include "internal.h"
Chuck Lever006ea732006-03-20 13:44:14 -050062#include "iostat.h"
Andy Adamsonfc931582009-04-01 09:22:31 -040063#include "callback.h"
Andy Adamsonb1f69b72010-10-20 00:18:03 -040064#include "pnfs.h"
Chuck Leverf0920752012-05-21 22:45:41 -040065#include "netns.h"
Trond Myklebust73e39aa2012-11-26 12:49:34 -050066#include "nfs4session.h"
David Howellsde242c02012-12-20 21:52:38 +000067#include "fscache.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070068
Trond Myklebustc6d01c62013-08-09 11:51:26 -040069#include "nfs4trace.h"
70
Linus Torvalds1da177e2005-04-16 15:20:36 -070071#define NFSDBG_FACILITY NFSDBG_PROC
72
Trond Myklebust2066fe82006-09-15 08:30:46 -040073#define NFS4_POLL_RETRY_MIN (HZ/10)
Linus Torvalds1da177e2005-04-16 15:20:36 -070074#define NFS4_POLL_RETRY_MAX (15*HZ)
75
Trond Myklebustcdd4e682006-01-03 09:55:12 +010076struct nfs4_opendata;
Trond Myklebust864472e2006-01-03 09:55:15 +010077static int _nfs4_proc_open(struct nfs4_opendata *data);
Alexandros Batsakisb2579572009-12-14 21:27:57 -080078static int _nfs4_recover_proc_open(struct nfs4_opendata *data);
Linus Torvalds1da177e2005-04-16 15:20:36 -070079static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
Trond Myklebust9e33bed2008-12-23 15:21:46 -050080static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *);
Chuck Lever81934dd2012-03-01 17:01:57 -050081static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr);
David Quigley1775fd32013-05-22 12:50:42 -040082static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label);
83static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label);
Trond Myklebust0ab64e02010-04-16 16:22:51 -040084static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
85 struct nfs_fattr *fattr, struct iattr *sattr,
David Quigley1775fd32013-05-22 12:50:42 -040086 struct nfs4_state *state, struct nfs4_label *ilabel,
87 struct nfs4_label *olabel);
Bryan Schumakerf062eb62011-06-02 14:59:10 -040088#ifdef CONFIG_NFS_V4_1
Trond Myklebustab7cb0d2013-05-20 11:20:27 -040089static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *,
90 struct rpc_cred *);
91static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *,
92 struct rpc_cred *);
Bryan Schumakerf062eb62011-06-02 14:59:10 -040093#endif
David Quigleyaa9c2662013-05-22 12:50:44 -040094
95#ifdef CONFIG_NFS_V4_SECURITY_LABEL
96static inline struct nfs4_label *
97nfs4_label_init_security(struct inode *dir, struct dentry *dentry,
98 struct iattr *sattr, struct nfs4_label *label)
99{
100 int err;
101
102 if (label == NULL)
103 return NULL;
104
105 if (nfs_server_capable(dir, NFS_CAP_SECURITY_LABEL) == 0)
106 return NULL;
107
David Quigleyaa9c2662013-05-22 12:50:44 -0400108 err = security_dentry_init_security(dentry, sattr->ia_mode,
109 &dentry->d_name, (void **)&label->label, &label->len);
110 if (err == 0)
111 return label;
112
113 return NULL;
114}
115static inline void
116nfs4_label_release_security(struct nfs4_label *label)
117{
118 if (label)
119 security_release_secctx(label->label, label->len);
120}
121static inline u32 *nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label)
122{
123 if (label)
124 return server->attr_bitmask;
125
126 return server->attr_bitmask_nl;
127}
128#else
129static inline struct nfs4_label *
130nfs4_label_init_security(struct inode *dir, struct dentry *dentry,
131 struct iattr *sattr, struct nfs4_label *l)
132{ return NULL; }
133static inline void
134nfs4_label_release_security(struct nfs4_label *label)
135{ return; }
136static inline u32 *
137nfs4_bitmask(struct nfs_server *server, struct nfs4_label *label)
138{ return server->attr_bitmask; }
139#endif
140
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141/* Prevent leaks of NFSv4 errors into userland */
WANG Cong46f72f52008-12-30 16:35:55 -0500142static int nfs4_map_errors(int err)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143{
Trond Myklebust52567b02009-10-23 14:46:42 -0400144 if (err >= -1000)
145 return err;
146 switch (err) {
147 case -NFS4ERR_RESOURCE:
Weston Andros Adamson30005122013-02-28 20:30:10 -0500148 case -NFS4ERR_LAYOUTTRYLATER:
149 case -NFS4ERR_RECALLCONFLICT:
Trond Myklebust52567b02009-10-23 14:46:42 -0400150 return -EREMOTEIO;
Bryan Schumaker7ebb9312011-03-24 17:12:30 +0000151 case -NFS4ERR_WRONGSEC:
Weston Andros Adamson88975382013-08-13 16:37:38 -0400152 case -NFS4ERR_WRONG_CRED:
Bryan Schumaker7ebb9312011-03-24 17:12:30 +0000153 return -EPERM;
Trond Myklebust3ddeb7c2011-02-22 15:44:31 -0800154 case -NFS4ERR_BADOWNER:
155 case -NFS4ERR_BADNAME:
156 return -EINVAL;
Trond Myklebustfb13bfa2012-05-28 11:36:28 -0400157 case -NFS4ERR_SHARE_DENIED:
158 return -EACCES;
Steve Dicksonf25efd82012-06-06 14:12:07 -0400159 case -NFS4ERR_MINOR_VERS_MISMATCH:
160 return -EPROTONOSUPPORT;
Weston Andros Adamson6168f622012-09-10 14:00:46 -0400161 case -NFS4ERR_ACCESS:
162 return -EACCES;
Trond Myklebust6e3cf242013-03-23 15:22:45 -0400163 case -NFS4ERR_FILE_OPEN:
164 return -EBUSY;
Trond Myklebust52567b02009-10-23 14:46:42 -0400165 default:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166 dprintk("%s could not handle NFSv4 error %d\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -0700167 __func__, -err);
Trond Myklebust52567b02009-10-23 14:46:42 -0400168 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169 }
Trond Myklebust52567b02009-10-23 14:46:42 -0400170 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171}
172
173/*
174 * This is our standard bitmap for GETATTR requests.
175 */
Trond Myklebust1549210f2012-06-05 09:16:47 -0400176const u32 nfs4_fattr_bitmap[3] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177 FATTR4_WORD0_TYPE
178 | FATTR4_WORD0_CHANGE
179 | FATTR4_WORD0_SIZE
180 | FATTR4_WORD0_FSID
181 | FATTR4_WORD0_FILEID,
182 FATTR4_WORD1_MODE
183 | FATTR4_WORD1_NUMLINKS
184 | FATTR4_WORD1_OWNER
185 | FATTR4_WORD1_OWNER_GROUP
186 | FATTR4_WORD1_RAWDEV
187 | FATTR4_WORD1_SPACE_USED
188 | FATTR4_WORD1_TIME_ACCESS
189 | FATTR4_WORD1_TIME_METADATA
David Quigleyaa9c2662013-05-22 12:50:44 -0400190 | FATTR4_WORD1_TIME_MODIFY,
191#ifdef CONFIG_NFS_V4_SECURITY_LABEL
192 FATTR4_WORD2_SECURITY_LABEL
193#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194};
195
Trond Myklebust1549210f2012-06-05 09:16:47 -0400196static const u32 nfs4_pnfs_open_bitmap[3] = {
197 FATTR4_WORD0_TYPE
198 | FATTR4_WORD0_CHANGE
199 | FATTR4_WORD0_SIZE
200 | FATTR4_WORD0_FSID
201 | FATTR4_WORD0_FILEID,
202 FATTR4_WORD1_MODE
203 | FATTR4_WORD1_NUMLINKS
204 | FATTR4_WORD1_OWNER
205 | FATTR4_WORD1_OWNER_GROUP
206 | FATTR4_WORD1_RAWDEV
207 | FATTR4_WORD1_SPACE_USED
208 | FATTR4_WORD1_TIME_ACCESS
209 | FATTR4_WORD1_TIME_METADATA
210 | FATTR4_WORD1_TIME_MODIFY,
211 FATTR4_WORD2_MDSTHRESHOLD
212};
213
Andy Adamsone23008e2012-10-02 21:07:32 -0400214static const u32 nfs4_open_noattr_bitmap[3] = {
215 FATTR4_WORD0_TYPE
216 | FATTR4_WORD0_CHANGE
217 | FATTR4_WORD0_FILEID,
218};
219
David Quigleya09df2c2013-05-22 12:50:41 -0400220const u32 nfs4_statfs_bitmap[3] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221 FATTR4_WORD0_FILES_AVAIL
222 | FATTR4_WORD0_FILES_FREE
223 | FATTR4_WORD0_FILES_TOTAL,
224 FATTR4_WORD1_SPACE_AVAIL
225 | FATTR4_WORD1_SPACE_FREE
226 | FATTR4_WORD1_SPACE_TOTAL
227};
228
David Quigleya09df2c2013-05-22 12:50:41 -0400229const u32 nfs4_pathconf_bitmap[3] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230 FATTR4_WORD0_MAXLINK
231 | FATTR4_WORD0_MAXNAME,
232 0
233};
234
Fred Isamandae100c2011-07-30 20:52:37 -0400235const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236 | FATTR4_WORD0_MAXREAD
237 | FATTR4_WORD0_MAXWRITE
238 | FATTR4_WORD0_LEASE_TIME,
Ricardo Labiaga55b6e772010-10-12 16:30:06 -0700239 FATTR4_WORD1_TIME_DELTA
Fred Isamandae100c2011-07-30 20:52:37 -0400240 | FATTR4_WORD1_FS_LAYOUT_TYPES,
241 FATTR4_WORD2_LAYOUT_BLKSIZE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242};
243
David Quigleya09df2c2013-05-22 12:50:41 -0400244const u32 nfs4_fs_locations_bitmap[3] = {
Manoj Naik830b8e32006-06-09 09:34:25 -0400245 FATTR4_WORD0_TYPE
246 | FATTR4_WORD0_CHANGE
247 | FATTR4_WORD0_SIZE
248 | FATTR4_WORD0_FSID
249 | FATTR4_WORD0_FILEID
250 | FATTR4_WORD0_FS_LOCATIONS,
251 FATTR4_WORD1_MODE
252 | FATTR4_WORD1_NUMLINKS
253 | FATTR4_WORD1_OWNER
254 | FATTR4_WORD1_OWNER_GROUP
255 | FATTR4_WORD1_RAWDEV
256 | FATTR4_WORD1_SPACE_USED
257 | FATTR4_WORD1_TIME_ACCESS
258 | FATTR4_WORD1_TIME_METADATA
259 | FATTR4_WORD1_TIME_MODIFY
David Quigleya09df2c2013-05-22 12:50:41 -0400260 | FATTR4_WORD1_MOUNTED_ON_FILEID,
Manoj Naik830b8e32006-06-09 09:34:25 -0400261};
262
Al Virobc4785c2006-10-19 23:28:51 -0700263static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 struct nfs4_readdir_arg *readdir)
265{
Al Viro0dbb4c62006-10-19 23:28:49 -0700266 __be32 *start, *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268 if (cookie > 2) {
Adrian Bunkb7ef1952005-06-22 17:16:28 +0000269 readdir->cookie = cookie;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270 memcpy(&readdir->verifier, verifier, sizeof(readdir->verifier));
271 return;
272 }
273
274 readdir->cookie = 0;
275 memset(&readdir->verifier, 0, sizeof(readdir->verifier));
276 if (cookie == 2)
277 return;
278
279 /*
280 * NFSv4 servers do not return entries for '.' and '..'
281 * Therefore, we fake these entries here. We let '.'
282 * have cookie 0 and '..' have cookie 1. Note that
283 * when talking to the server, we always send cookie 0
284 * instead of 1 or 2.
285 */
Cong Wang2b86ce22011-11-25 23:14:33 +0800286 start = p = kmap_atomic(*readdir->pages);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287
288 if (cookie == 0) {
289 *p++ = xdr_one; /* next */
290 *p++ = xdr_zero; /* cookie, first word */
291 *p++ = xdr_one; /* cookie, second word */
292 *p++ = xdr_one; /* entry len */
293 memcpy(p, ".\0\0\0", 4); /* entry */
294 p++;
295 *p++ = xdr_one; /* bitmap length */
296 *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */
297 *p++ = htonl(8); /* attribute buffer length */
Peter Staubach4e769b92007-08-03 15:07:10 -0400298 p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299 }
300
301 *p++ = xdr_one; /* next */
302 *p++ = xdr_zero; /* cookie, first word */
303 *p++ = xdr_two; /* cookie, second word */
304 *p++ = xdr_two; /* entry len */
305 memcpy(p, "..\0\0", 4); /* entry */
306 p++;
307 *p++ = xdr_one; /* bitmap length */
308 *p++ = htonl(FATTR4_WORD0_FILEID); /* bitmap */
309 *p++ = htonl(8); /* attribute buffer length */
Peter Staubach4e769b92007-08-03 15:07:10 -0400310 p = xdr_encode_hyper(p, NFS_FILEID(dentry->d_parent->d_inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311
312 readdir->pgbase = (char *)p - (char *)start;
313 readdir->count -= readdir->pgbase;
Cong Wang2b86ce22011-11-25 23:14:33 +0800314 kunmap_atomic(start);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315}
316
Trond Myklebust65de8722008-12-23 15:21:44 -0500317static int nfs4_delay(struct rpc_clnt *clnt, long *timeout)
318{
319 int res = 0;
320
321 might_sleep();
322
323 if (*timeout <= 0)
324 *timeout = NFS4_POLL_RETRY_MIN;
325 if (*timeout > NFS4_POLL_RETRY_MAX)
326 *timeout = NFS4_POLL_RETRY_MAX;
Colin Cross416ad3c2013-05-06 23:50:06 +0000327 freezable_schedule_timeout_killable_unsafe(*timeout);
Trond Myklebust65de8722008-12-23 15:21:44 -0500328 if (fatal_signal_pending(current))
329 res = -ERESTARTSYS;
330 *timeout <<= 1;
331 return res;
332}
333
334/* This is the error handling routine for processes that are allowed
335 * to sleep.
336 */
Trond Myklebustb064eca22011-02-22 15:44:32 -0800337static int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
Trond Myklebust65de8722008-12-23 15:21:44 -0500338{
339 struct nfs_client *clp = server->nfs_client;
Trond Myklebust9e33bed2008-12-23 15:21:46 -0500340 struct nfs4_state *state = exception->state;
Trond Myklebust3114ea72012-03-07 16:39:06 -0500341 struct inode *inode = exception->inode;
Trond Myklebust65de8722008-12-23 15:21:44 -0500342 int ret = errorcode;
343
344 exception->retry = 0;
345 switch(errorcode) {
346 case 0:
347 return 0;
Trond Myklebust3114ea72012-03-07 16:39:06 -0500348 case -NFS4ERR_OPENMODE:
Bryan Schumaker011e2a72012-06-20 15:53:43 -0400349 if (inode && nfs4_have_delegation(inode, FMODE_READ)) {
Bryan Schumaker57ec14c2012-06-20 15:53:44 -0400350 nfs4_inode_return_delegation(inode);
Trond Myklebust3114ea72012-03-07 16:39:06 -0500351 exception->retry = 1;
352 return 0;
353 }
354 if (state == NULL)
355 break;
Trond Myklebust5d422302013-03-14 16:57:48 -0400356 ret = nfs4_schedule_stateid_recovery(server, state);
357 if (ret < 0)
358 break;
Trond Myklebust3114ea72012-03-07 16:39:06 -0500359 goto wait_on_recovery;
Trond Myklebusta1d0b5e2012-03-05 19:56:44 -0500360 case -NFS4ERR_DELEG_REVOKED:
Trond Myklebust9e33bed2008-12-23 15:21:46 -0500361 case -NFS4ERR_ADMIN_REVOKED:
362 case -NFS4ERR_BAD_STATEID:
Trond Myklebustb570a972013-04-12 15:04:51 -0400363 if (inode != NULL && nfs4_have_delegation(inode, FMODE_READ)) {
364 nfs_remove_bad_delegation(inode);
365 exception->retry = 1;
366 break;
367 }
Trond Myklebust9e33bed2008-12-23 15:21:46 -0500368 if (state == NULL)
369 break;
Trond Myklebust5d422302013-03-14 16:57:48 -0400370 ret = nfs4_schedule_stateid_recovery(server, state);
371 if (ret < 0)
372 break;
Trond Myklebust0400a6b2011-03-09 16:00:53 -0500373 goto wait_on_recovery;
Trond Myklebust0ced63d2011-05-26 14:26:35 -0400374 case -NFS4ERR_EXPIRED:
Trond Myklebust5d422302013-03-14 16:57:48 -0400375 if (state != NULL) {
376 ret = nfs4_schedule_stateid_recovery(server, state);
377 if (ret < 0)
378 break;
379 }
Trond Myklebust65de8722008-12-23 15:21:44 -0500380 case -NFS4ERR_STALE_STATEID:
Trond Myklebusta2c0b9e2010-01-26 15:42:47 -0500381 case -NFS4ERR_STALE_CLIENTID:
Trond Myklebust0400a6b2011-03-09 16:00:53 -0500382 nfs4_schedule_lease_recovery(clp);
383 goto wait_on_recovery;
Chuck Lever519ae252013-10-17 14:13:19 -0400384 case -NFS4ERR_MOVED:
385 ret = nfs4_schedule_migration_recovery(server);
386 if (ret < 0)
387 break;
388 goto wait_on_recovery;
Chuck Lever8ef2f8d2013-10-17 14:13:41 -0400389 case -NFS4ERR_LEASE_MOVED:
390 nfs4_schedule_lease_moved_recovery(clp);
391 goto wait_on_recovery;
Trond Myklebust03391692010-01-26 15:42:38 -0500392#if defined(CONFIG_NFS_V4_1)
Andy Adamson4745e312009-04-01 09:22:42 -0400393 case -NFS4ERR_BADSESSION:
394 case -NFS4ERR_BADSLOT:
395 case -NFS4ERR_BAD_HIGH_SLOT:
396 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
397 case -NFS4ERR_DEADSESSION:
398 case -NFS4ERR_SEQ_FALSE_RETRY:
399 case -NFS4ERR_SEQ_MISORDERED:
400 dprintk("%s ERROR: %d Reset session\n", __func__,
401 errorcode);
Trond Myklebust9f594792012-05-27 13:02:53 -0400402 nfs4_schedule_session_recovery(clp->cl_session, errorcode);
Bryan Schumaker399f11c2012-10-30 16:06:35 -0400403 goto wait_on_recovery;
Trond Myklebust03391692010-01-26 15:42:38 -0500404#endif /* defined(CONFIG_NFS_V4_1) */
Trond Myklebust65de8722008-12-23 15:21:44 -0500405 case -NFS4ERR_FILE_OPEN:
NeilBrown44ed3552009-12-03 15:58:56 -0500406 if (exception->timeout > HZ) {
407 /* We have retried a decent amount, time to
408 * fail
409 */
410 ret = -EBUSY;
411 break;
412 }
Trond Myklebust65de8722008-12-23 15:21:44 -0500413 case -NFS4ERR_GRACE:
414 case -NFS4ERR_DELAY:
415 ret = nfs4_delay(server->client, &exception->timeout);
416 if (ret != 0)
417 break;
Andy Adamsona8a4ae32011-05-03 13:43:03 -0400418 case -NFS4ERR_RETRY_UNCACHED_REP:
Trond Myklebust65de8722008-12-23 15:21:44 -0500419 case -NFS4ERR_OLD_STATEID:
420 exception->retry = 1;
Trond Myklebustb064eca22011-02-22 15:44:32 -0800421 break;
422 case -NFS4ERR_BADOWNER:
423 /* The following works around a Linux server bug! */
424 case -NFS4ERR_BADNAME:
425 if (server->caps & NFS_CAP_UIDGID_NOMAP) {
426 server->caps &= ~NFS_CAP_UIDGID_NOMAP;
427 exception->retry = 1;
428 printk(KERN_WARNING "NFS: v4 server %s "
429 "does not accept raw "
430 "uid/gids. "
431 "Reenabling the idmapper.\n",
432 server->nfs_client->cl_hostname);
433 }
Trond Myklebust65de8722008-12-23 15:21:44 -0500434 }
435 /* We failed to handle the error */
436 return nfs4_map_errors(ret);
Trond Myklebust0400a6b2011-03-09 16:00:53 -0500437wait_on_recovery:
Trond Myklebusta2c0b9e2010-01-26 15:42:47 -0500438 ret = nfs4_wait_clnt_recover(clp);
Chuck Lever519ae252013-10-17 14:13:19 -0400439 if (test_bit(NFS_MIG_FAILED, &server->mig_status))
440 return -EIO;
Trond Myklebusta2c0b9e2010-01-26 15:42:47 -0500441 if (ret == 0)
442 exception->retry = 1;
443 return ret;
Trond Myklebust65de8722008-12-23 15:21:44 -0500444}
445
Weston Andros Adamsona5250de2013-09-03 15:18:49 -0400446/*
447 * Return 'true' if 'clp' is using an rpc_client that is integrity protected
448 * or 'false' otherwise.
449 */
450static bool _nfs4_is_integrity_protected(struct nfs_client *clp)
451{
452 rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor;
453
454 if (flavor == RPC_AUTH_GSS_KRB5I ||
455 flavor == RPC_AUTH_GSS_KRB5P)
456 return true;
457
458 return false;
459}
Trond Myklebust65de8722008-12-23 15:21:44 -0500460
Trond Myklebust452e9352010-07-31 14:29:06 -0400461static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463 spin_lock(&clp->cl_lock);
464 if (time_before(clp->cl_last_renewal,timestamp))
465 clp->cl_last_renewal = timestamp;
466 spin_unlock(&clp->cl_lock);
467}
468
Trond Myklebust452e9352010-07-31 14:29:06 -0400469static void renew_lease(const struct nfs_server *server, unsigned long timestamp)
470{
471 do_renew_lease(server->nfs_client, timestamp);
472}
473
Chuck Lever2a3eb2b2013-08-09 12:48:00 -0400474struct nfs4_call_sync_data {
475 const struct nfs_server *seq_server;
476 struct nfs4_sequence_args *seq_args;
477 struct nfs4_sequence_res *seq_res;
478};
479
Chuck Levera9c92d62013-08-09 12:48:18 -0400480static void nfs4_init_sequence(struct nfs4_sequence_args *args,
481 struct nfs4_sequence_res *res, int cache_reply)
482{
483 args->sa_slot = NULL;
484 args->sa_cache_this = cache_reply;
485 args->sa_privileged = 0;
486
487 res->sr_slot = NULL;
488}
489
490static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args)
491{
492 args->sa_privileged = 1;
493}
494
Chuck Lever3bd23842013-08-09 12:49:19 -0400495static int nfs40_setup_sequence(const struct nfs_server *server,
496 struct nfs4_sequence_args *args,
497 struct nfs4_sequence_res *res,
498 struct rpc_task *task)
499{
500 struct nfs4_slot_table *tbl = server->nfs_client->cl_slot_tbl;
501 struct nfs4_slot *slot;
502
503 /* slot already allocated? */
504 if (res->sr_slot != NULL)
505 goto out_start;
506
507 spin_lock(&tbl->slot_tbl_lock);
508 if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged)
509 goto out_sleep;
510
511 slot = nfs4_alloc_slot(tbl);
512 if (IS_ERR(slot)) {
513 if (slot == ERR_PTR(-ENOMEM))
514 task->tk_timeout = HZ >> 2;
515 goto out_sleep;
516 }
517 spin_unlock(&tbl->slot_tbl_lock);
518
519 args->sa_slot = slot;
520 res->sr_slot = slot;
521
522out_start:
523 rpc_call_start(task);
524 return 0;
525
526out_sleep:
527 if (args->sa_privileged)
528 rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task,
529 NULL, RPC_PRIORITY_PRIVILEGED);
530 else
531 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
532 spin_unlock(&tbl->slot_tbl_lock);
533 return -EAGAIN;
534}
535
536static int nfs40_sequence_done(struct rpc_task *task,
537 struct nfs4_sequence_res *res)
538{
539 struct nfs4_slot *slot = res->sr_slot;
540 struct nfs4_slot_table *tbl;
541
Trond Myklebustcab92c12014-01-29 12:12:15 -0500542 if (slot == NULL)
Chuck Lever3bd23842013-08-09 12:49:19 -0400543 goto out;
544
545 tbl = slot->table;
546 spin_lock(&tbl->slot_tbl_lock);
547 if (!nfs41_wake_and_assign_slot(tbl, slot))
548 nfs4_free_slot(tbl, slot);
549 spin_unlock(&tbl->slot_tbl_lock);
550
551 res->sr_slot = NULL;
552out:
553 return 1;
554}
555
Andy Adamsoncccef3b2009-04-01 09:22:03 -0400556#if defined(CONFIG_NFS_V4_1)
557
Trond Myklebustd185a332010-06-16 09:52:25 -0400558static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res)
Andy Adamson13615872009-04-01 09:22:17 -0400559{
Trond Myklebuste3725ec2012-11-16 12:25:01 -0500560 struct nfs4_session *session;
Andy Adamson13615872009-04-01 09:22:17 -0400561 struct nfs4_slot_table *tbl;
Trond Myklebusta13ce7c2014-01-29 12:24:03 -0500562 struct nfs4_slot *slot = res->sr_slot;
Trond Myklebustc10e4492012-11-26 16:16:54 -0500563 bool send_new_highest_used_slotid = false;
Andy Adamson13615872009-04-01 09:22:17 -0400564
Trond Myklebusta13ce7c2014-01-29 12:24:03 -0500565 tbl = slot->table;
Trond Myklebuste3725ec2012-11-16 12:25:01 -0500566 session = tbl->session;
Andy Adamsonea028ac2009-12-04 15:55:38 -0500567
Trond Myklebust35dc1d72009-12-05 19:32:19 -0500568 spin_lock(&tbl->slot_tbl_lock);
Trond Myklebustc10e4492012-11-26 16:16:54 -0500569 /* Be nice to the server: try to ensure that the last transmitted
570 * value for highest_user_slotid <= target_highest_slotid
571 */
572 if (tbl->highest_used_slotid > tbl->target_highest_slotid)
573 send_new_highest_used_slotid = true;
574
Trond Myklebusta13ce7c2014-01-29 12:24:03 -0500575 if (nfs41_wake_and_assign_slot(tbl, slot)) {
Trond Myklebustb75ad4c2012-11-29 17:27:47 -0500576 send_new_highest_used_slotid = false;
577 goto out_unlock;
578 }
Trond Myklebusta13ce7c2014-01-29 12:24:03 -0500579 nfs4_free_slot(tbl, slot);
Trond Myklebustc10e4492012-11-26 16:16:54 -0500580
581 if (tbl->highest_used_slotid != NFS4_NO_SLOT)
582 send_new_highest_used_slotid = false;
Trond Myklebustb75ad4c2012-11-29 17:27:47 -0500583out_unlock:
Trond Myklebust35dc1d72009-12-05 19:32:19 -0500584 spin_unlock(&tbl->slot_tbl_lock);
Benny Halevydfb4f3092010-09-24 09:17:01 -0400585 res->sr_slot = NULL;
Trond Myklebustc10e4492012-11-26 16:16:54 -0500586 if (send_new_highest_used_slotid)
587 nfs41_server_notify_highest_slotid_update(session->clp);
Andy Adamson13615872009-04-01 09:22:17 -0400588}
589
Andy Adamsonf9c96fc2014-01-29 11:34:38 -0500590int nfs41_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res)
Andy Adamsonb0df8062009-04-01 09:22:18 -0400591{
Trond Myklebuste3725ec2012-11-16 12:25:01 -0500592 struct nfs4_session *session;
Trond Myklebusta13ce7c2014-01-29 12:24:03 -0500593 struct nfs4_slot *slot = res->sr_slot;
Trond Myklebust14516c32010-07-31 14:29:06 -0400594 struct nfs_client *clp;
Trond Myklebustac20d162012-12-15 15:36:07 -0500595 bool interrupted = false;
Trond Myklebust85563072012-12-11 10:31:12 -0500596 int ret = 1;
Andy Adamsonb0df8062009-04-01 09:22:18 -0400597
Trond Myklebusta13ce7c2014-01-29 12:24:03 -0500598 if (slot == NULL)
599 goto out_noaction;
Bryan Schumaker468f8612011-04-18 15:57:32 -0400600 /* don't increment the sequence number if the task wasn't sent */
601 if (!RPC_WAS_SENT(task))
Andy Adamsonb0df8062009-04-01 09:22:18 -0400602 goto out;
603
Trond Myklebuste3725ec2012-11-16 12:25:01 -0500604 session = slot->table->session;
Trond Myklebust933602e2012-11-16 12:12:38 -0500605
Trond Myklebustac20d162012-12-15 15:36:07 -0500606 if (slot->interrupted) {
607 slot->interrupted = 0;
608 interrupted = true;
609 }
610
Trond Myklebust2f92ae32013-08-14 17:58:28 -0400611 trace_nfs4_sequence_done(session, res);
Andy Adamson691daf32009-12-04 15:55:39 -0500612 /* Check the SEQUENCE operation status */
Trond Myklebust14516c32010-07-31 14:29:06 -0400613 switch (res->sr_status) {
614 case 0:
Andy Adamsonb0df8062009-04-01 09:22:18 -0400615 /* Update the slot's sequence and clientid lease timer */
Trond Myklebust933602e2012-11-16 12:12:38 -0500616 ++slot->seq_nr;
Trond Myklebuste3725ec2012-11-16 12:25:01 -0500617 clp = session->clp;
Trond Myklebust8e63b6a2012-12-15 15:21:52 -0500618 do_renew_lease(clp, res->sr_timestamp);
Alexandros Batsakis0629e372009-12-05 13:46:14 -0500619 /* Check sequence flags */
Trond Myklebustb4410c22011-03-09 16:00:55 -0500620 if (res->sr_status_flags != 0)
621 nfs4_schedule_lease_recovery(clp);
Trond Myklebust464ee9f2012-11-20 12:49:27 -0500622 nfs41_update_target_slotid(slot->table, slot, res);
Trond Myklebust14516c32010-07-31 14:29:06 -0400623 break;
Trond Myklebustac20d162012-12-15 15:36:07 -0500624 case 1:
625 /*
626 * sr_status remains 1 if an RPC level error occurred.
627 * The server may or may not have processed the sequence
628 * operation..
629 * Mark the slot as having hosted an interrupted RPC call.
630 */
631 slot->interrupted = 1;
632 goto out;
Trond Myklebust14516c32010-07-31 14:29:06 -0400633 case -NFS4ERR_DELAY:
634 /* The server detected a resend of the RPC call and
635 * returned NFS4ERR_DELAY as per Section 2.10.6.2
636 * of RFC5661.
637 */
Trond Myklebustdf2fabf2012-11-16 12:45:06 -0500638 dprintk("%s: slot=%u seq=%u: Operation in progress\n",
Benny Halevydfb4f3092010-09-24 09:17:01 -0400639 __func__,
Trond Myklebustdf2fabf2012-11-16 12:45:06 -0500640 slot->slot_nr,
Trond Myklebust933602e2012-11-16 12:12:38 -0500641 slot->seq_nr);
Trond Myklebust14516c32010-07-31 14:29:06 -0400642 goto out_retry;
Trond Myklebust85563072012-12-11 10:31:12 -0500643 case -NFS4ERR_BADSLOT:
644 /*
645 * The slot id we used was probably retired. Try again
646 * using a different slot id.
647 */
Trond Myklebuste8794442012-12-15 13:56:18 -0500648 goto retry_nowait;
649 case -NFS4ERR_SEQ_MISORDERED:
650 /*
Trond Myklebustac20d162012-12-15 15:36:07 -0500651 * Was the last operation on this sequence interrupted?
652 * If so, retry after bumping the sequence number.
653 */
654 if (interrupted) {
655 ++slot->seq_nr;
656 goto retry_nowait;
657 }
658 /*
Trond Myklebuste8794442012-12-15 13:56:18 -0500659 * Could this slot have been previously retired?
660 * If so, then the server may be expecting seq_nr = 1!
661 */
Trond Myklebust8e63b6a2012-12-15 15:21:52 -0500662 if (slot->seq_nr != 1) {
663 slot->seq_nr = 1;
664 goto retry_nowait;
665 }
666 break;
Trond Myklebuste8794442012-12-15 13:56:18 -0500667 case -NFS4ERR_SEQ_FALSE_RETRY:
668 ++slot->seq_nr;
669 goto retry_nowait;
Trond Myklebust14516c32010-07-31 14:29:06 -0400670 default:
671 /* Just update the slot sequence no. */
Trond Myklebust933602e2012-11-16 12:12:38 -0500672 ++slot->seq_nr;
Andy Adamsonb0df8062009-04-01 09:22:18 -0400673 }
674out:
675 /* The session may be reset by one of the error handlers. */
676 dprintk("%s: Error %d free the slot \n", __func__, res->sr_status);
Trond Myklebustd185a332010-06-16 09:52:25 -0400677 nfs41_sequence_free_slot(res);
Trond Myklebusta13ce7c2014-01-29 12:24:03 -0500678out_noaction:
Trond Myklebust85563072012-12-11 10:31:12 -0500679 return ret;
Trond Myklebuste8794442012-12-15 13:56:18 -0500680retry_nowait:
681 if (rpc_restart_call_prepare(task)) {
682 task->tk_status = 0;
683 ret = 0;
684 }
685 goto out;
Trond Myklebust14516c32010-07-31 14:29:06 -0400686out_retry:
Trond Myklebustd05dd4e2010-07-31 14:29:07 -0400687 if (!rpc_restart_call(task))
Trond Myklebust14516c32010-07-31 14:29:06 -0400688 goto out;
689 rpc_delay(task, NFS4_POLL_RETRY_MAX);
690 return 0;
Andy Adamsonb0df8062009-04-01 09:22:18 -0400691}
Andy Adamsonf9c96fc2014-01-29 11:34:38 -0500692EXPORT_SYMBOL_GPL(nfs41_sequence_done);
Andy Adamsonb0df8062009-04-01 09:22:18 -0400693
Trond Myklebust14516c32010-07-31 14:29:06 -0400694static int nfs4_sequence_done(struct rpc_task *task,
695 struct nfs4_sequence_res *res)
Trond Myklebustdf896452010-06-16 09:52:26 -0400696{
Trond Myklebuste3725ec2012-11-16 12:25:01 -0500697 if (res->sr_slot == NULL)
Trond Myklebust14516c32010-07-31 14:29:06 -0400698 return 1;
Chuck Lever3bd23842013-08-09 12:49:19 -0400699 if (!res->sr_slot->table->session)
700 return nfs40_sequence_done(task, res);
Trond Myklebust14516c32010-07-31 14:29:06 -0400701 return nfs41_sequence_done(task, res);
Trond Myklebustdf896452010-06-16 09:52:26 -0400702}
703
Andy Adamsondc70d7b2011-03-01 01:34:19 +0000704int nfs41_setup_sequence(struct nfs4_session *session,
Andy Adamsonce5039c2009-04-01 09:22:13 -0400705 struct nfs4_sequence_args *args,
706 struct nfs4_sequence_res *res,
Andy Adamsonce5039c2009-04-01 09:22:13 -0400707 struct rpc_task *task)
708{
Andy Adamsonfbcd4ab2009-04-01 09:22:15 -0400709 struct nfs4_slot *slot;
710 struct nfs4_slot_table *tbl;
Andy Adamsonfbcd4ab2009-04-01 09:22:15 -0400711
712 dprintk("--> %s\n", __func__);
Andy Adamsonce5039c2009-04-01 09:22:13 -0400713 /* slot already allocated? */
Benny Halevydfb4f3092010-09-24 09:17:01 -0400714 if (res->sr_slot != NULL)
Trond Myklebustd9afbd12012-10-22 20:28:44 -0400715 goto out_success;
Andy Adamsonce5039c2009-04-01 09:22:13 -0400716
Andy Adamsonfbcd4ab2009-04-01 09:22:15 -0400717 tbl = &session->fc_slot_table;
718
Trond Myklebust69d206b2012-11-22 13:21:02 -0500719 task->tk_timeout = 0;
720
Andy Adamsonfbcd4ab2009-04-01 09:22:15 -0400721 spin_lock(&tbl->slot_tbl_lock);
Andy Adamson774d5f12013-05-20 14:13:50 -0400722 if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) &&
Trond Myklebust8fe72ba2012-10-29 19:02:20 -0400723 !args->sa_privileged) {
Andy Adamson0b1c8fc2011-11-09 13:58:26 -0500724 /* The state manager will wait until the slot table is empty */
Andy Adamson0b1c8fc2011-11-09 13:58:26 -0500725 dprintk("%s session is draining\n", __func__);
Trond Myklebust7b939a32012-11-01 15:19:46 -0400726 goto out_sleep;
Andy Adamsonb069d942009-04-01 09:22:43 -0400727 }
728
Trond Myklebust2dc03b72012-11-16 16:10:11 -0500729 slot = nfs4_alloc_slot(tbl);
Trond Myklebust69d206b2012-11-22 13:21:02 -0500730 if (IS_ERR(slot)) {
731 /* If out of memory, try again in 1/4 second */
732 if (slot == ERR_PTR(-ENOMEM))
733 task->tk_timeout = HZ >> 2;
Andy Adamsonfbcd4ab2009-04-01 09:22:15 -0400734 dprintk("<-- %s: no free slots\n", __func__);
Trond Myklebust7b939a32012-11-01 15:19:46 -0400735 goto out_sleep;
Andy Adamsonfbcd4ab2009-04-01 09:22:15 -0400736 }
737 spin_unlock(&tbl->slot_tbl_lock);
738
Trond Myklebust2b2fa712012-11-16 12:58:36 -0500739 args->sa_slot = slot;
Andy Adamsonfbcd4ab2009-04-01 09:22:15 -0400740
Chuck Levere8d92382013-08-09 12:47:51 -0400741 dprintk("<-- %s slotid=%u seqid=%u\n", __func__,
Trond Myklebust2dc03b72012-11-16 16:10:11 -0500742 slot->slot_nr, slot->seq_nr);
Andy Adamsonfbcd4ab2009-04-01 09:22:15 -0400743
Benny Halevydfb4f3092010-09-24 09:17:01 -0400744 res->sr_slot = slot;
Trond Myklebust8e63b6a2012-12-15 15:21:52 -0500745 res->sr_timestamp = jiffies;
Trond Myklebust2a6e26c2010-06-16 09:52:25 -0400746 res->sr_status_flags = 0;
Andy Adamsonfbcd4ab2009-04-01 09:22:15 -0400747 /*
748 * sr_status is only set in decode_sequence, and so will remain
749 * set to 1 if an rpc level failure occurs.
750 */
751 res->sr_status = 1;
Trond Myklebust2f92ae32013-08-14 17:58:28 -0400752 trace_nfs4_setup_sequence(session, args);
Trond Myklebustd9afbd12012-10-22 20:28:44 -0400753out_success:
754 rpc_call_start(task);
Andy Adamsonce5039c2009-04-01 09:22:13 -0400755 return 0;
Trond Myklebust7b939a32012-11-01 15:19:46 -0400756out_sleep:
Trond Myklebust8fe72ba2012-10-29 19:02:20 -0400757 /* Privileged tasks are queued with top priority */
758 if (args->sa_privileged)
Trond Myklebust1e1093c2012-11-01 16:44:05 -0400759 rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task,
760 NULL, RPC_PRIORITY_PRIVILEGED);
761 else
762 rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL);
Trond Myklebust7b939a32012-11-01 15:19:46 -0400763 spin_unlock(&tbl->slot_tbl_lock);
764 return -EAGAIN;
Andy Adamsonce5039c2009-04-01 09:22:13 -0400765}
Andy Adamsondc70d7b2011-03-01 01:34:19 +0000766EXPORT_SYMBOL_GPL(nfs41_setup_sequence);
Andy Adamsonce5039c2009-04-01 09:22:13 -0400767
Chuck Lever5a580e02013-08-09 12:48:09 -0400768static int nfs4_setup_sequence(const struct nfs_server *server,
769 struct nfs4_sequence_args *args,
770 struct nfs4_sequence_res *res,
771 struct rpc_task *task)
Andy Adamsonce5039c2009-04-01 09:22:13 -0400772{
Trond Myklebust035168a2010-06-16 09:52:26 -0400773 struct nfs4_session *session = nfs4_get_session(server);
Andy Adamsonce5039c2009-04-01 09:22:13 -0400774 int ret = 0;
775
Chuck Lever3bd23842013-08-09 12:49:19 -0400776 if (!session)
777 return nfs40_setup_sequence(server, args, res, task);
Trond Myklebust035168a2010-06-16 09:52:26 -0400778
Chuck Levere8d92382013-08-09 12:47:51 -0400779 dprintk("--> %s clp %p session %p sr_slot %u\n",
Benny Halevydfb4f3092010-09-24 09:17:01 -0400780 __func__, session->clp, session, res->sr_slot ?
Chuck Levere8d92382013-08-09 12:47:51 -0400781 res->sr_slot->slot_nr : NFS4_NO_SLOT);
Trond Myklebust035168a2010-06-16 09:52:26 -0400782
Trond Myklebust9d12b212012-01-17 22:04:25 -0500783 ret = nfs41_setup_sequence(session, args, res, task);
Chuck Lever3bd23842013-08-09 12:49:19 -0400784
Andy Adamsonce5039c2009-04-01 09:22:13 -0400785 dprintk("<-- %s status=%d\n", __func__, ret);
786 return ret;
787}
788
Andy Adamsonce5039c2009-04-01 09:22:13 -0400789static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata)
790{
Chuck Lever2a3eb2b2013-08-09 12:48:00 -0400791 struct nfs4_call_sync_data *data = calldata;
Trond Myklebust6ba7db32012-10-22 20:07:20 -0400792 struct nfs4_session *session = nfs4_get_session(data->seq_server);
Andy Adamsonce5039c2009-04-01 09:22:13 -0400793
Trond Myklebust035168a2010-06-16 09:52:26 -0400794 dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server);
795
Trond Myklebustd9afbd12012-10-22 20:28:44 -0400796 nfs41_setup_sequence(session, data->seq_args, data->seq_res, task);
Andy Adamsonce5039c2009-04-01 09:22:13 -0400797}
798
Andy Adamson69ab40c2009-04-01 09:22:19 -0400799static void nfs41_call_sync_done(struct rpc_task *task, void *calldata)
800{
Chuck Lever2a3eb2b2013-08-09 12:48:00 -0400801 struct nfs4_call_sync_data *data = calldata;
Andy Adamson69ab40c2009-04-01 09:22:19 -0400802
Trond Myklebust14516c32010-07-31 14:29:06 -0400803 nfs41_sequence_done(task, data->seq_res);
Andy Adamson69ab40c2009-04-01 09:22:19 -0400804}
805
Trond Myklebust17280172012-03-11 13:11:00 -0400806static const struct rpc_call_ops nfs41_call_sync_ops = {
Andy Adamsonce5039c2009-04-01 09:22:13 -0400807 .rpc_call_prepare = nfs41_call_sync_prepare,
Andy Adamson69ab40c2009-04-01 09:22:19 -0400808 .rpc_call_done = nfs41_call_sync_done,
Andy Adamsonce5039c2009-04-01 09:22:13 -0400809};
810
Chuck Lever3bd23842013-08-09 12:49:19 -0400811#else /* !CONFIG_NFS_V4_1 */
812
Chuck Lever5a580e02013-08-09 12:48:09 -0400813static int nfs4_setup_sequence(const struct nfs_server *server,
814 struct nfs4_sequence_args *args,
815 struct nfs4_sequence_res *res,
816 struct rpc_task *task)
817{
Chuck Lever3bd23842013-08-09 12:49:19 -0400818 return nfs40_setup_sequence(server, args, res, task);
Chuck Lever5a580e02013-08-09 12:48:09 -0400819}
Trond Myklebust8fe72ba2012-10-29 19:02:20 -0400820
Trond Myklebust14516c32010-07-31 14:29:06 -0400821static int nfs4_sequence_done(struct rpc_task *task,
822 struct nfs4_sequence_res *res)
Trond Myklebustdf896452010-06-16 09:52:26 -0400823{
Chuck Lever3bd23842013-08-09 12:49:19 -0400824 return nfs40_sequence_done(task, res);
Trond Myklebustdf896452010-06-16 09:52:26 -0400825}
Chuck Lever3bd23842013-08-09 12:49:19 -0400826
827#endif /* !CONFIG_NFS_V4_1 */
Andy Adamsoncccef3b2009-04-01 09:22:03 -0400828
Chuck Lever9915ea72013-08-09 12:48:27 -0400829static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata)
830{
831 struct nfs4_call_sync_data *data = calldata;
832 nfs4_setup_sequence(data->seq_server,
833 data->seq_args, data->seq_res, task);
834}
835
836static void nfs40_call_sync_done(struct rpc_task *task, void *calldata)
837{
838 struct nfs4_call_sync_data *data = calldata;
839 nfs4_sequence_done(task, data->seq_res);
840}
841
842static const struct rpc_call_ops nfs40_call_sync_ops = {
843 .rpc_call_prepare = nfs40_call_sync_prepare,
844 .rpc_call_done = nfs40_call_sync_done,
845};
846
Trond Myklebust2ced46c2007-07-03 23:48:13 -0400847static int nfs4_call_sync_sequence(struct rpc_clnt *clnt,
Trond Myklebustad389da2007-06-05 12:30:00 -0400848 struct nfs_server *server,
Trond Myklebustdc0b0272008-12-23 15:21:56 -0500849 struct rpc_message *msg,
Trond Myklebuste56e0b782006-01-03 09:55:08 +0100850 struct nfs4_sequence_args *args,
851 struct nfs4_sequence_res *res)
Trond Myklebustad389da2007-06-05 12:30:00 -0400852{
Trond Myklebuste56e0b782006-01-03 09:55:08 +0100853 int ret;
854 struct rpc_task *task;
Chuck Lever9915ea72013-08-09 12:48:27 -0400855 struct nfs_client *clp = server->nfs_client;
856 struct nfs4_call_sync_data data = {
Trond Myklebuste56e0b782006-01-03 09:55:08 +0100857 .seq_server = server,
858 .seq_args = args,
859 .seq_res = res,
860 };
861 struct rpc_task_setup task_setup = {
862 .rpc_client = clnt,
863 .rpc_message = msg,
Chuck Lever9915ea72013-08-09 12:48:27 -0400864 .callback_ops = clp->cl_mvops->call_sync_ops,
Trond Myklebuste56e0b782006-01-03 09:55:08 +0100865 .callback_data = &data
866 };
867
868 task = rpc_run_task(&task_setup);
869 if (IS_ERR(task))
870 ret = PTR_ERR(task);
871 else {
872 ret = task->tk_status;
Trond Myklebustad389da2007-06-05 12:30:00 -0400873 rpc_put_task(task);
874 }
Trond Myklebuste56e0b782006-01-03 09:55:08 +0100875 return ret;
876}
877
Trond Myklebustfd0c0952012-11-01 14:43:38 -0400878static
Bryan Schumaker7c513052011-03-24 17:12:24 +0000879int nfs4_call_sync(struct rpc_clnt *clnt,
880 struct nfs_server *server,
Bryan Schumakere73b83f2011-03-24 17:12:23 +0000881 struct rpc_message *msg,
882 struct nfs4_sequence_args *args,
883 struct nfs4_sequence_res *res,
884 int cache_reply)
885{
Chuck Levera9c92d62013-08-09 12:48:18 -0400886 nfs4_init_sequence(args, res, cache_reply);
Chuck Lever9915ea72013-08-09 12:48:27 -0400887 return nfs4_call_sync_sequence(clnt, server, msg, args, res);
Bryan Schumakere73b83f2011-03-24 17:12:23 +0000888}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700889
890static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
891{
892 struct nfs_inode *nfsi = NFS_I(dir);
893
894 spin_lock(&dir->i_lock);
Trond Myklebust359d7d12012-05-28 10:01:34 -0400895 nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
Trond Myklebusta9a4a872011-10-17 16:08:46 -0700896 if (!cinfo->atomic || cinfo->before != dir->i_version)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897 nfs_force_lookup_revalidate(dir);
Trond Myklebusta9a4a872011-10-17 16:08:46 -0700898 dir->i_version = cinfo->after;
David Howellsde242c02012-12-20 21:52:38 +0000899 nfs_fscache_invalidate(dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700900 spin_unlock(&dir->i_lock);
901}
902
903struct nfs4_opendata {
904 struct kref kref;
905 struct nfs_openargs o_arg;
906 struct nfs_openres o_res;
907 struct nfs_open_confirmargs c_arg;
908 struct nfs_open_confirmres c_res;
Trond Myklebust6926afd2012-01-07 13:22:46 -0500909 struct nfs4_string owner_name;
910 struct nfs4_string group_name;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700911 struct nfs_fattr f_attr;
David Quigley1775fd32013-05-22 12:50:42 -0400912 struct nfs4_label *f_label;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913 struct dentry *dir;
Al Viro82a2c1b2011-06-22 18:30:55 -0400914 struct dentry *dentry;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700915 struct nfs4_state_owner *owner;
916 struct nfs4_state *state;
917 struct iattr attrs;
918 unsigned long timestamp;
Trond Myklebustdecf4912005-10-27 22:12:39 -0400919 unsigned int rpc_done : 1;
Trond Myklebust5bc2afc2013-09-23 18:01:28 -0400920 unsigned int file_created : 1;
Trond Myklebustbdeca1b2013-04-23 14:52:44 -0400921 unsigned int is_recover : 1;
Trond Myklebustdecf4912005-10-27 22:12:39 -0400922 int rpc_status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923 int cancelled;
924};
Trond Myklebustdecf4912005-10-27 22:12:39 -0400925
Trond Myklebust49f9a0f2013-03-15 16:44:28 -0400926static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server,
927 int err, struct nfs4_exception *exception)
928{
929 if (err != -EINVAL)
930 return false;
931 if (!(server->caps & NFS_CAP_ATOMIC_OPEN_V1))
932 return false;
933 server->caps &= ~NFS_CAP_ATOMIC_OPEN_V1;
934 exception->retry = 1;
935 return true;
936}
937
938static enum open_claim_type4
939nfs4_map_atomic_open_claim(struct nfs_server *server,
940 enum open_claim_type4 claim)
941{
942 if (server->caps & NFS_CAP_ATOMIC_OPEN_V1)
943 return claim;
944 switch (claim) {
945 default:
946 return claim;
947 case NFS4_OPEN_CLAIM_FH:
948 return NFS4_OPEN_CLAIM_NULL;
949 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
950 return NFS4_OPEN_CLAIM_DELEGATE_CUR;
951 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
952 return NFS4_OPEN_CLAIM_DELEGATE_PREV;
953 }
954}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700955
956static void nfs4_init_opendata_res(struct nfs4_opendata *p)
Trond Myklebuste56e0b782006-01-03 09:55:08 +0100957{
958 p->o_res.f_attr = &p->f_attr;
David Quigley1775fd32013-05-22 12:50:42 -0400959 p->o_res.f_label = p->f_label;
Trond Myklebuste56e0b782006-01-03 09:55:08 +0100960 p->o_res.seqid = p->o_arg.seqid;
961 p->c_res.seqid = p->c_arg.seqid;
962 p->o_res.server = p->o_arg.server;
Andy Adamson5f657532012-10-03 02:39:34 -0400963 p->o_res.access_request = p->o_arg.access;
Trond Myklebuste56e0b782006-01-03 09:55:08 +0100964 nfs_fattr_init(&p->f_attr);
Trond Myklebust6926afd2012-01-07 13:22:46 -0500965 nfs_fattr_init_names(&p->f_attr, &p->owner_name, &p->group_name);
Trond Myklebuste56e0b782006-01-03 09:55:08 +0100966}
967
Al Viro82a2c1b2011-06-22 18:30:55 -0400968static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
Trond Myklebuste56e0b782006-01-03 09:55:08 +0100969 struct nfs4_state_owner *sp, fmode_t fmode, int flags,
Trond Myklebust8535b2b2010-05-13 12:51:01 -0400970 const struct iattr *attrs,
David Quigley1775fd32013-05-22 12:50:42 -0400971 struct nfs4_label *label,
Trond Myklebust4a1c0892013-03-15 14:57:33 -0400972 enum open_claim_type4 claim,
Trond Myklebust8535b2b2010-05-13 12:51:01 -0400973 gfp_t gfp_mask)
Trond Myklebuste56e0b782006-01-03 09:55:08 +0100974{
Al Viro82a2c1b2011-06-22 18:30:55 -0400975 struct dentry *parent = dget_parent(dentry);
Trond Myklebuste56e0b782006-01-03 09:55:08 +0100976 struct inode *dir = parent->d_inode;
977 struct nfs_server *server = NFS_SERVER(dir);
978 struct nfs4_opendata *p;
979
Trond Myklebust8535b2b2010-05-13 12:51:01 -0400980 p = kzalloc(sizeof(*p), gfp_mask);
Trond Myklebuste56e0b782006-01-03 09:55:08 +0100981 if (p == NULL)
982 goto err;
David Quigley14c43f72013-05-22 12:50:43 -0400983
984 p->f_label = nfs4_label_alloc(server, gfp_mask);
985 if (IS_ERR(p->f_label))
986 goto err_free_p;
987
Trond Myklebust8535b2b2010-05-13 12:51:01 -0400988 p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid, gfp_mask);
Trond Myklebuste56e0b782006-01-03 09:55:08 +0100989 if (p->o_arg.seqid == NULL)
David Quigley14c43f72013-05-22 12:50:43 -0400990 goto err_free_label;
Al Viro82a2c1b2011-06-22 18:30:55 -0400991 nfs_sb_active(dentry->d_sb);
992 p->dentry = dget(dentry);
Trond Myklebuste56e0b782006-01-03 09:55:08 +0100993 p->dir = parent;
994 p->owner = sp;
995 atomic_inc(&sp->so_count);
Trond Myklebustdc0b0272008-12-23 15:21:56 -0500996 p->o_arg.open_flags = flags;
997 p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
Weston Andros Adamsonae2bb032012-10-02 14:49:52 -0700998 /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
999 * will return permission denied for all bits until close */
1000 if (!(flags & O_EXCL)) {
1001 /* ask server to check for all possible rights as results
1002 * are cached */
1003 p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY |
1004 NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE;
Weston Andros Adamsonae2bb032012-10-02 14:49:52 -07001005 }
David Howells7539bba2006-08-22 20:06:09 -04001006 p->o_arg.clientid = server->nfs_client->cl_clientid;
Trond Myklebust95b72eb2012-04-20 19:24:51 -04001007 p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time);
1008 p->o_arg.id.uniquifier = sp->so_seqid.owner_id;
Al Viro82a2c1b2011-06-22 18:30:55 -04001009 p->o_arg.name = &dentry->d_name;
Trond Myklebuste56e0b782006-01-03 09:55:08 +01001010 p->o_arg.server = server;
David Quigleyaa9c2662013-05-22 12:50:44 -04001011 p->o_arg.bitmask = nfs4_bitmask(server, label);
Trond Myklebust1549210f2012-06-05 09:16:47 -04001012 p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0];
David Quigley1775fd32013-05-22 12:50:42 -04001013 p->o_arg.label = label;
Trond Myklebust49f9a0f2013-03-15 16:44:28 -04001014 p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim);
1015 switch (p->o_arg.claim) {
Trond Myklebust4a1c0892013-03-15 14:57:33 -04001016 case NFS4_OPEN_CLAIM_NULL:
1017 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1018 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
1019 p->o_arg.fh = NFS_FH(dir);
1020 break;
1021 case NFS4_OPEN_CLAIM_PREVIOUS:
1022 case NFS4_OPEN_CLAIM_FH:
1023 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1024 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
1025 p->o_arg.fh = NFS_FH(dentry->d_inode);
1026 }
Trond Myklebust536e43d2012-01-17 22:04:26 -05001027 if (attrs != NULL && attrs->ia_valid != 0) {
Trond Myklebustc281fa9c2013-08-20 21:06:49 -04001028 __u32 verf[2];
Trond Myklebustd77d76f2010-06-16 09:52:27 -04001029
Trond Myklebuste56e0b782006-01-03 09:55:08 +01001030 p->o_arg.u.attrs = &p->attrs;
1031 memcpy(&p->attrs, attrs, sizeof(p->attrs));
Chuck Levercd937102012-03-02 17:14:31 -05001032
1033 verf[0] = jiffies;
1034 verf[1] = current->pid;
1035 memcpy(p->o_arg.u.verifier.data, verf,
1036 sizeof(p->o_arg.u.verifier.data));
Trond Myklebuste56e0b782006-01-03 09:55:08 +01001037 }
Trond Myklebustcdd4e682006-01-03 09:55:12 +01001038 p->c_arg.fh = &p->o_res.fh;
1039 p->c_arg.stateid = &p->o_res.stateid;
1040 p->c_arg.seqid = p->o_arg.seqid;
Trond Myklebust2ced46c2007-07-03 23:48:13 -04001041 nfs4_init_opendata_res(p);
Trond Myklebustc6d00e62007-06-17 16:02:44 -04001042 kref_init(&p->kref);
Trond Myklebuste56e0b782006-01-03 09:55:08 +01001043 return p;
David Quigley14c43f72013-05-22 12:50:43 -04001044
1045err_free_label:
1046 nfs4_label_free(p->f_label);
1047err_free_p:
Trond Myklebuste56e0b782006-01-03 09:55:08 +01001048 kfree(p);
1049err:
1050 dput(parent);
1051 return NULL;
1052}
1053
Trond Myklebustc6d00e62007-06-17 16:02:44 -04001054static void nfs4_opendata_free(struct kref *kref)
Trond Myklebuste56e0b782006-01-03 09:55:08 +01001055{
Trond Myklebustc6d00e62007-06-17 16:02:44 -04001056 struct nfs4_opendata *p = container_of(kref,
1057 struct nfs4_opendata, kref);
Al Viro82a2c1b2011-06-22 18:30:55 -04001058 struct super_block *sb = p->dentry->d_sb;
Trond Myklebustc6d00e62007-06-17 16:02:44 -04001059
1060 nfs_free_seqid(p->o_arg.seqid);
Trond Myklebustaac00a82007-07-05 19:02:21 -04001061 if (p->state != NULL)
1062 nfs4_put_open_state(p->state);
Trond Myklebustc6d00e62007-06-17 16:02:44 -04001063 nfs4_put_state_owner(p->owner);
David Quigley14c43f72013-05-22 12:50:43 -04001064
1065 nfs4_label_free(p->f_label);
1066
Trond Myklebustc6d00e62007-06-17 16:02:44 -04001067 dput(p->dir);
Al Viro82a2c1b2011-06-22 18:30:55 -04001068 dput(p->dentry);
1069 nfs_sb_deactive(sb);
Trond Myklebust6926afd2012-01-07 13:22:46 -05001070 nfs_fattr_free_names(&p->f_attr);
Trond Myklebustc6d00e62007-06-17 16:02:44 -04001071 kfree(p);
1072}
1073
1074static void nfs4_opendata_put(struct nfs4_opendata *p)
1075{
1076 if (p != NULL)
1077 kref_put(&p->kref, nfs4_opendata_free);
Trond Myklebuste56e0b782006-01-03 09:55:08 +01001078}
1079
Trond Myklebust06f814a2006-01-03 09:55:07 +01001080static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
1081{
Trond Myklebust06f814a2006-01-03 09:55:07 +01001082 int ret;
1083
Trond Myklebust06f814a2006-01-03 09:55:07 +01001084 ret = rpc_wait_for_completion_task(task);
Trond Myklebust06f814a2006-01-03 09:55:07 +01001085 return ret;
1086}
1087
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001088static int can_open_cached(struct nfs4_state *state, fmode_t mode, int open_mode)
Trond Myklebust6ee41262007-07-08 14:11:36 -04001089{
1090 int ret = 0;
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001091
Trond Myklebust536e43d2012-01-17 22:04:26 -05001092 if (open_mode & (O_EXCL|O_TRUNC))
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001093 goto out;
1094 switch (mode & (FMODE_READ|FMODE_WRITE)) {
Trond Myklebust6ee41262007-07-08 14:11:36 -04001095 case FMODE_READ:
Trond Myklebust88069f72009-12-08 08:33:16 -05001096 ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0
1097 && state->n_rdonly != 0;
Trond Myklebust6ee41262007-07-08 14:11:36 -04001098 break;
1099 case FMODE_WRITE:
Trond Myklebust88069f72009-12-08 08:33:16 -05001100 ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0
1101 && state->n_wronly != 0;
Trond Myklebust6ee41262007-07-08 14:11:36 -04001102 break;
1103 case FMODE_READ|FMODE_WRITE:
Trond Myklebust88069f72009-12-08 08:33:16 -05001104 ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0
1105 && state->n_rdwr != 0;
Trond Myklebust6ee41262007-07-08 14:11:36 -04001106 }
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001107out:
Trond Myklebust6ee41262007-07-08 14:11:36 -04001108 return ret;
1109}
1110
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001111static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode)
Trond Myklebustaac00a82007-07-05 19:02:21 -04001112{
Trond Myklebust652f89f2011-12-09 19:05:58 -05001113 if (delegation == NULL)
1114 return 0;
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001115 if ((delegation->type & fmode) != fmode)
Trond Myklebustaac00a82007-07-05 19:02:21 -04001116 return 0;
Trond Myklebust15c831b2008-12-23 15:21:39 -05001117 if (test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
Trond Myklebustaac00a82007-07-05 19:02:21 -04001118 return 0;
Trond Myklebustd25be542013-02-05 11:43:28 -05001119 if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags))
1120 return 0;
Trond Myklebustb7391f42008-12-23 15:21:52 -05001121 nfs_mark_delegation_referenced(delegation);
Trond Myklebustaac00a82007-07-05 19:02:21 -04001122 return 1;
1123}
1124
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001125static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
Trond Myklebuste7616922006-01-03 09:55:13 +01001126{
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001127 switch (fmode) {
Trond Myklebuste7616922006-01-03 09:55:13 +01001128 case FMODE_WRITE:
1129 state->n_wronly++;
1130 break;
1131 case FMODE_READ:
1132 state->n_rdonly++;
1133 break;
1134 case FMODE_READ|FMODE_WRITE:
1135 state->n_rdwr++;
1136 }
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001137 nfs4_state_set_mode_locked(state, state->state | fmode);
Trond Myklebuste7616922006-01-03 09:55:13 +01001138}
1139
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001140static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
Trond Myklebust003707c2007-07-05 18:07:55 -04001141{
1142 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
Trond Myklebustf597c532012-03-04 18:13:56 -05001143 nfs4_stateid_copy(&state->stateid, stateid);
1144 nfs4_stateid_copy(&state->open_stateid, stateid);
Trond Myklebust92b40e92013-04-20 01:25:45 -04001145 set_bit(NFS_OPEN_STATE, &state->flags);
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001146 switch (fmode) {
Trond Myklebust003707c2007-07-05 18:07:55 -04001147 case FMODE_READ:
1148 set_bit(NFS_O_RDONLY_STATE, &state->flags);
1149 break;
1150 case FMODE_WRITE:
1151 set_bit(NFS_O_WRONLY_STATE, &state->flags);
1152 break;
1153 case FMODE_READ|FMODE_WRITE:
1154 set_bit(NFS_O_RDWR_STATE, &state->flags);
1155 }
1156}
1157
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001158static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
Trond Myklebust003707c2007-07-05 18:07:55 -04001159{
Trond Myklebust8bda4e42007-07-09 10:45:42 -04001160 write_seqlock(&state->seqlock);
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001161 nfs_set_open_stateid_locked(state, stateid, fmode);
Trond Myklebust8bda4e42007-07-09 10:45:42 -04001162 write_sequnlock(&state->seqlock);
Trond Myklebust003707c2007-07-05 18:07:55 -04001163}
1164
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001165static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001166{
Trond Myklebust8bda4e42007-07-09 10:45:42 -04001167 /*
1168 * Protect the call to nfs4_state_set_mode_locked and
1169 * serialise the stateid update
1170 */
1171 write_seqlock(&state->seqlock);
Trond Myklebust003707c2007-07-05 18:07:55 -04001172 if (deleg_stateid != NULL) {
Trond Myklebustf597c532012-03-04 18:13:56 -05001173 nfs4_stateid_copy(&state->stateid, deleg_stateid);
Trond Myklebust003707c2007-07-05 18:07:55 -04001174 set_bit(NFS_DELEGATED_STATE, &state->flags);
1175 }
1176 if (open_stateid != NULL)
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001177 nfs_set_open_stateid_locked(state, open_stateid, fmode);
Trond Myklebust8bda4e42007-07-09 10:45:42 -04001178 write_sequnlock(&state->seqlock);
1179 spin_lock(&state->owner->so_lock);
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001180 update_open_stateflags(state, fmode);
Trond Myklebustec073422005-10-20 14:22:47 -07001181 spin_unlock(&state->owner->so_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001182}
1183
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001184static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode)
Trond Myklebust34310432008-12-23 15:21:38 -05001185{
1186 struct nfs_inode *nfsi = NFS_I(state->inode);
1187 struct nfs_delegation *deleg_cur;
1188 int ret = 0;
1189
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001190 fmode &= (FMODE_READ|FMODE_WRITE);
Trond Myklebust34310432008-12-23 15:21:38 -05001191
1192 rcu_read_lock();
1193 deleg_cur = rcu_dereference(nfsi->delegation);
1194 if (deleg_cur == NULL)
1195 goto no_delegation;
1196
1197 spin_lock(&deleg_cur->lock);
Trond Myklebust17f26b12013-08-21 15:48:42 -04001198 if (rcu_dereference(nfsi->delegation) != deleg_cur ||
Trond Myklebustd25be542013-02-05 11:43:28 -05001199 test_bit(NFS_DELEGATION_RETURNING, &deleg_cur->flags) ||
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001200 (deleg_cur->type & fmode) != fmode)
Trond Myklebust34310432008-12-23 15:21:38 -05001201 goto no_delegation_unlock;
1202
1203 if (delegation == NULL)
1204 delegation = &deleg_cur->stateid;
Trond Myklebustf597c532012-03-04 18:13:56 -05001205 else if (!nfs4_stateid_match(&deleg_cur->stateid, delegation))
Trond Myklebust34310432008-12-23 15:21:38 -05001206 goto no_delegation_unlock;
1207
Trond Myklebustb7391f42008-12-23 15:21:52 -05001208 nfs_mark_delegation_referenced(deleg_cur);
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001209 __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode);
Trond Myklebust34310432008-12-23 15:21:38 -05001210 ret = 1;
1211no_delegation_unlock:
1212 spin_unlock(&deleg_cur->lock);
1213no_delegation:
1214 rcu_read_unlock();
1215
1216 if (!ret && open_stateid != NULL) {
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001217 __update_open_stateid(state, open_stateid, NULL, fmode);
Trond Myklebust34310432008-12-23 15:21:38 -05001218 ret = 1;
1219 }
1220
1221 return ret;
1222}
1223
1224
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001225static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmode)
Trond Myklebustaac00a82007-07-05 19:02:21 -04001226{
1227 struct nfs_delegation *delegation;
1228
1229 rcu_read_lock();
1230 delegation = rcu_dereference(NFS_I(inode)->delegation);
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001231 if (delegation == NULL || (delegation->type & fmode) == fmode) {
Trond Myklebustaac00a82007-07-05 19:02:21 -04001232 rcu_read_unlock();
1233 return;
1234 }
1235 rcu_read_unlock();
Bryan Schumaker57ec14c2012-06-20 15:53:44 -04001236 nfs4_inode_return_delegation(inode);
Trond Myklebustaac00a82007-07-05 19:02:21 -04001237}
1238
Trond Myklebust6ee41262007-07-08 14:11:36 -04001239static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
Trond Myklebustaac00a82007-07-05 19:02:21 -04001240{
1241 struct nfs4_state *state = opendata->state;
1242 struct nfs_inode *nfsi = NFS_I(state->inode);
1243 struct nfs_delegation *delegation;
Trond Myklebustf448bad2013-05-29 15:36:40 -04001244 int open_mode = opendata->o_arg.open_flags;
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001245 fmode_t fmode = opendata->o_arg.fmode;
Trond Myklebustaac00a82007-07-05 19:02:21 -04001246 nfs4_stateid stateid;
1247 int ret = -EAGAIN;
1248
Trond Myklebustaac00a82007-07-05 19:02:21 -04001249 for (;;) {
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001250 if (can_open_cached(state, fmode, open_mode)) {
Trond Myklebust6ee41262007-07-08 14:11:36 -04001251 spin_lock(&state->owner->so_lock);
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001252 if (can_open_cached(state, fmode, open_mode)) {
1253 update_open_stateflags(state, fmode);
Trond Myklebust6ee41262007-07-08 14:11:36 -04001254 spin_unlock(&state->owner->so_lock);
Trond Myklebust6ee41262007-07-08 14:11:36 -04001255 goto out_return_state;
1256 }
1257 spin_unlock(&state->owner->so_lock);
1258 }
Trond Myklebust34310432008-12-23 15:21:38 -05001259 rcu_read_lock();
1260 delegation = rcu_dereference(nfsi->delegation);
Trond Myklebust652f89f2011-12-09 19:05:58 -05001261 if (!can_open_delegated(delegation, fmode)) {
Trond Myklebust34310432008-12-23 15:21:38 -05001262 rcu_read_unlock();
Trond Myklebust6ee41262007-07-08 14:11:36 -04001263 break;
Trond Myklebust34310432008-12-23 15:21:38 -05001264 }
Trond Myklebustaac00a82007-07-05 19:02:21 -04001265 /* Save the delegation */
Trond Myklebustf597c532012-03-04 18:13:56 -05001266 nfs4_stateid_copy(&stateid, &delegation->stateid);
Trond Myklebustaac00a82007-07-05 19:02:21 -04001267 rcu_read_unlock();
Trond Myklebustfa332942013-04-09 12:56:52 -04001268 nfs_release_seqid(opendata->o_arg.seqid);
Trond Myklebustbdeca1b2013-04-23 14:52:44 -04001269 if (!opendata->is_recover) {
1270 ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode);
1271 if (ret != 0)
1272 goto out;
1273 }
Trond Myklebustaac00a82007-07-05 19:02:21 -04001274 ret = -EAGAIN;
Trond Myklebust34310432008-12-23 15:21:38 -05001275
1276 /* Try to update the stateid using the delegation */
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001277 if (update_open_stateid(state, NULL, &stateid, fmode))
Trond Myklebust34310432008-12-23 15:21:38 -05001278 goto out_return_state;
Trond Myklebustaac00a82007-07-05 19:02:21 -04001279 }
Trond Myklebustaac00a82007-07-05 19:02:21 -04001280out:
1281 return ERR_PTR(ret);
1282out_return_state:
1283 atomic_inc(&state->count);
1284 return state;
1285}
1286
Andy Adamsone23008e2012-10-02 21:07:32 -04001287static void
1288nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state)
1289{
1290 struct nfs_client *clp = NFS_SERVER(state->inode)->nfs_client;
1291 struct nfs_delegation *delegation;
1292 int delegation_flags = 0;
1293
1294 rcu_read_lock();
1295 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
1296 if (delegation)
1297 delegation_flags = delegation->flags;
1298 rcu_read_unlock();
1299 if (data->o_arg.claim == NFS4_OPEN_CLAIM_DELEGATE_CUR) {
1300 pr_err_ratelimited("NFS: Broken NFSv4 server %s is "
1301 "returning a delegation for "
1302 "OPEN(CLAIM_DELEGATE_CUR)\n",
1303 clp->cl_hostname);
1304 } else if ((delegation_flags & 1UL<<NFS_DELEGATION_NEED_RECLAIM) == 0)
1305 nfs_inode_set_delegation(state->inode,
1306 data->owner->so_cred,
1307 &data->o_res);
1308 else
1309 nfs_inode_reclaim_delegation(state->inode,
1310 data->owner->so_cred,
1311 &data->o_res);
1312}
1313
1314/*
1315 * Check the inode attributes against the CLAIM_PREVIOUS returned attributes
1316 * and update the nfs4_state.
1317 */
1318static struct nfs4_state *
1319_nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data)
1320{
1321 struct inode *inode = data->state->inode;
1322 struct nfs4_state *state = data->state;
1323 int ret;
1324
Weston Andros Adamsond2bfda22013-10-21 13:10:13 -04001325 if (!data->rpc_done) {
1326 if (data->rpc_status) {
1327 ret = data->rpc_status;
1328 goto err;
1329 }
1330 /* cached opens have already been processed */
1331 goto update;
Andy Adamsone23008e2012-10-02 21:07:32 -04001332 }
1333
Andy Adamsone23008e2012-10-02 21:07:32 -04001334 ret = nfs_refresh_inode(inode, &data->f_attr);
1335 if (ret)
1336 goto err;
1337
1338 if (data->o_res.delegation_type != 0)
1339 nfs4_opendata_check_deleg(data, state);
Weston Andros Adamsond2bfda22013-10-21 13:10:13 -04001340update:
Andy Adamsone23008e2012-10-02 21:07:32 -04001341 update_open_stateid(state, &data->o_res.stateid, NULL,
1342 data->o_arg.fmode);
Trond Myklebustd49f0422013-10-28 14:57:12 -04001343 atomic_inc(&state->count);
Andy Adamsone23008e2012-10-02 21:07:32 -04001344
1345 return state;
1346err:
1347 return ERR_PTR(ret);
1348
1349}
1350
1351static struct nfs4_state *
1352_nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001353{
1354 struct inode *inode;
1355 struct nfs4_state *state = NULL;
Trond Myklebust1b370bc2007-07-07 08:04:47 -04001356 int ret;
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001357
Trond Myklebustaac00a82007-07-05 19:02:21 -04001358 if (!data->rpc_done) {
Trond Myklebust6ee41262007-07-08 14:11:36 -04001359 state = nfs4_try_open_cached(data);
Trond Myklebustaac00a82007-07-05 19:02:21 -04001360 goto out;
1361 }
1362
Trond Myklebust1b370bc2007-07-07 08:04:47 -04001363 ret = -EAGAIN;
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001364 if (!(data->f_attr.valid & NFS_ATTR_FATTR))
Trond Myklebust1b370bc2007-07-07 08:04:47 -04001365 goto err;
David Quigley1775fd32013-05-22 12:50:42 -04001366 inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr, data->f_label);
Trond Myklebust1b370bc2007-07-07 08:04:47 -04001367 ret = PTR_ERR(inode);
Trond Myklebust03f28e32006-03-20 13:44:48 -05001368 if (IS_ERR(inode))
Trond Myklebust1b370bc2007-07-07 08:04:47 -04001369 goto err;
1370 ret = -ENOMEM;
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001371 state = nfs4_get_open_state(inode, data->owner);
1372 if (state == NULL)
Trond Myklebust1b370bc2007-07-07 08:04:47 -04001373 goto err_put_inode;
Andy Adamsone23008e2012-10-02 21:07:32 -04001374 if (data->o_res.delegation_type != 0)
1375 nfs4_opendata_check_deleg(data, state);
Trond Myklebust34310432008-12-23 15:21:38 -05001376 update_open_stateid(state, &data->o_res.stateid, NULL,
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001377 data->o_arg.fmode);
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001378 iput(inode);
Trond Myklebustaac00a82007-07-05 19:02:21 -04001379out:
Trond Myklebust7aa262b52013-02-28 16:19:59 -08001380 nfs_release_seqid(data->o_arg.seqid);
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001381 return state;
Trond Myklebust1b370bc2007-07-07 08:04:47 -04001382err_put_inode:
1383 iput(inode);
1384err:
1385 return ERR_PTR(ret);
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001386}
1387
Andy Adamsone23008e2012-10-02 21:07:32 -04001388static struct nfs4_state *
1389nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
1390{
1391 if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS)
1392 return _nfs4_opendata_reclaim_to_nfs4_state(data);
1393 return _nfs4_opendata_to_nfs4_state(data);
1394}
1395
Trond Myklebust864472e2006-01-03 09:55:15 +01001396static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state)
1397{
1398 struct nfs_inode *nfsi = NFS_I(state->inode);
1399 struct nfs_open_context *ctx;
1400
1401 spin_lock(&state->inode->i_lock);
1402 list_for_each_entry(ctx, &nfsi->open_files, list) {
1403 if (ctx->state != state)
1404 continue;
1405 get_nfs_open_context(ctx);
1406 spin_unlock(&state->inode->i_lock);
1407 return ctx;
1408 }
1409 spin_unlock(&state->inode->i_lock);
1410 return ERR_PTR(-ENOENT);
1411}
1412
Trond Myklebust4a1c0892013-03-15 14:57:33 -04001413static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx,
1414 struct nfs4_state *state, enum open_claim_type4 claim)
Trond Myklebust6f220ed2007-07-17 21:50:45 -04001415{
1416 struct nfs4_opendata *opendata;
1417
Trond Myklebust4a1c0892013-03-15 14:57:33 -04001418 opendata = nfs4_opendata_alloc(ctx->dentry, state->owner, 0, 0,
David Quigley1775fd32013-05-22 12:50:42 -04001419 NULL, NULL, claim, GFP_NOFS);
Trond Myklebust6f220ed2007-07-17 21:50:45 -04001420 if (opendata == NULL)
1421 return ERR_PTR(-ENOMEM);
1422 opendata->state = state;
1423 atomic_inc(&state->count);
1424 return opendata;
1425}
1426
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001427static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, fmode_t fmode, struct nfs4_state **res)
Trond Myklebust864472e2006-01-03 09:55:15 +01001428{
Trond Myklebust2ced46c2007-07-03 23:48:13 -04001429 struct nfs4_state *newstate;
Trond Myklebust864472e2006-01-03 09:55:15 +01001430 int ret;
1431
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001432 opendata->o_arg.open_flags = 0;
1433 opendata->o_arg.fmode = fmode;
Trond Myklebust2ced46c2007-07-03 23:48:13 -04001434 memset(&opendata->o_res, 0, sizeof(opendata->o_res));
1435 memset(&opendata->c_res, 0, sizeof(opendata->c_res));
1436 nfs4_init_opendata_res(opendata);
Alexandros Batsakisb2579572009-12-14 21:27:57 -08001437 ret = _nfs4_recover_proc_open(opendata);
Trond Myklebust864472e2006-01-03 09:55:15 +01001438 if (ret != 0)
1439 return ret;
Trond Myklebust2ced46c2007-07-03 23:48:13 -04001440 newstate = nfs4_opendata_to_nfs4_state(opendata);
Trond Myklebust1b370bc2007-07-07 08:04:47 -04001441 if (IS_ERR(newstate))
1442 return PTR_ERR(newstate);
Al Viro643168c2011-06-22 18:20:23 -04001443 nfs4_close_state(newstate, fmode);
Trond Myklebust2ced46c2007-07-03 23:48:13 -04001444 *res = newstate;
Trond Myklebust864472e2006-01-03 09:55:15 +01001445 return 0;
1446}
1447
1448static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state)
1449{
Trond Myklebust864472e2006-01-03 09:55:15 +01001450 struct nfs4_state *newstate;
Trond Myklebust864472e2006-01-03 09:55:15 +01001451 int ret;
1452
1453 /* memory barrier prior to reading state->n_* */
Trond Myklebust2ced46c2007-07-03 23:48:13 -04001454 clear_bit(NFS_DELEGATED_STATE, &state->flags);
Trond Myklebustfd068b22013-04-22 11:29:51 -04001455 clear_bit(NFS_OPEN_STATE, &state->flags);
Trond Myklebust864472e2006-01-03 09:55:15 +01001456 smp_rmb();
1457 if (state->n_rdwr != 0) {
Trond Myklebustb0ed9db2010-10-04 17:59:08 -04001458 clear_bit(NFS_O_RDWR_STATE, &state->flags);
Trond Myklebust2ced46c2007-07-03 23:48:13 -04001459 ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate);
Trond Myklebust864472e2006-01-03 09:55:15 +01001460 if (ret != 0)
1461 return ret;
Trond Myklebust2ced46c2007-07-03 23:48:13 -04001462 if (newstate != state)
1463 return -ESTALE;
Trond Myklebust864472e2006-01-03 09:55:15 +01001464 }
1465 if (state->n_wronly != 0) {
Trond Myklebustb0ed9db2010-10-04 17:59:08 -04001466 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
Trond Myklebust2ced46c2007-07-03 23:48:13 -04001467 ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate);
Trond Myklebust864472e2006-01-03 09:55:15 +01001468 if (ret != 0)
1469 return ret;
Trond Myklebust2ced46c2007-07-03 23:48:13 -04001470 if (newstate != state)
1471 return -ESTALE;
Trond Myklebust864472e2006-01-03 09:55:15 +01001472 }
1473 if (state->n_rdonly != 0) {
Trond Myklebustb0ed9db2010-10-04 17:59:08 -04001474 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
Trond Myklebust2ced46c2007-07-03 23:48:13 -04001475 ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate);
Trond Myklebust864472e2006-01-03 09:55:15 +01001476 if (ret != 0)
1477 return ret;
Trond Myklebust2ced46c2007-07-03 23:48:13 -04001478 if (newstate != state)
1479 return -ESTALE;
Trond Myklebust864472e2006-01-03 09:55:15 +01001480 }
Trond Myklebust1ac7e2f2007-07-08 21:04:15 -04001481 /*
1482 * We may have performed cached opens for all three recoveries.
1483 * Check if we need to update the current stateid.
1484 */
1485 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 &&
Trond Myklebustf597c532012-03-04 18:13:56 -05001486 !nfs4_stateid_match(&state->stateid, &state->open_stateid)) {
Trond Myklebust8bda4e42007-07-09 10:45:42 -04001487 write_seqlock(&state->seqlock);
Trond Myklebust1ac7e2f2007-07-08 21:04:15 -04001488 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
Trond Myklebustf597c532012-03-04 18:13:56 -05001489 nfs4_stateid_copy(&state->stateid, &state->open_stateid);
Trond Myklebust8bda4e42007-07-09 10:45:42 -04001490 write_sequnlock(&state->seqlock);
Trond Myklebust1ac7e2f2007-07-08 21:04:15 -04001491 }
Trond Myklebust864472e2006-01-03 09:55:15 +01001492 return 0;
1493}
1494
Linus Torvalds1da177e2005-04-16 15:20:36 -07001495/*
1496 * OPEN_RECLAIM:
1497 * reclaim state on the server after a reboot.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001498 */
Trond Myklebust539cd032007-06-05 11:46:42 -04001499static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001500{
Trond Myklebust1ac7e2f2007-07-08 21:04:15 -04001501 struct nfs_delegation *delegation;
Trond Myklebust864472e2006-01-03 09:55:15 +01001502 struct nfs4_opendata *opendata;
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001503 fmode_t delegation_type = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001504 int status;
1505
Trond Myklebust4a1c0892013-03-15 14:57:33 -04001506 opendata = nfs4_open_recoverdata_alloc(ctx, state,
1507 NFS4_OPEN_CLAIM_PREVIOUS);
Trond Myklebust6f220ed2007-07-17 21:50:45 -04001508 if (IS_ERR(opendata))
1509 return PTR_ERR(opendata);
Trond Myklebust1ac7e2f2007-07-08 21:04:15 -04001510 rcu_read_lock();
1511 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
Trond Myklebust15c831b2008-12-23 15:21:39 -05001512 if (delegation != NULL && test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags) != 0)
Trond Myklebust65bbf6b2007-08-27 09:57:46 -04001513 delegation_type = delegation->type;
Trond Myklebust1ac7e2f2007-07-08 21:04:15 -04001514 rcu_read_unlock();
Trond Myklebust864472e2006-01-03 09:55:15 +01001515 opendata->o_arg.u.delegation_type = delegation_type;
1516 status = nfs4_open_recover(opendata, state);
Trond Myklebustc6d00e62007-06-17 16:02:44 -04001517 nfs4_opendata_put(opendata);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001518 return status;
1519}
1520
Trond Myklebust539cd032007-06-05 11:46:42 -04001521static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001522{
1523 struct nfs_server *server = NFS_SERVER(state->inode);
1524 struct nfs4_exception exception = { };
1525 int err;
1526 do {
Trond Myklebust539cd032007-06-05 11:46:42 -04001527 err = _nfs4_do_open_reclaim(ctx, state);
Trond Myklebust42113a72013-08-12 16:19:27 -04001528 trace_nfs4_open_reclaim(ctx, 0, err);
Trond Myklebust49f9a0f2013-03-15 16:44:28 -04001529 if (nfs4_clear_cap_atomic_open_v1(server, err, &exception))
1530 continue;
Trond Myklebust168667c2010-10-19 19:47:49 -04001531 if (err != -NFS4ERR_DELAY)
Trond Myklebust202b50d2005-06-22 17:16:29 +00001532 break;
1533 nfs4_handle_exception(server, err, &exception);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001534 } while (exception.retry);
1535 return err;
1536}
1537
Trond Myklebust864472e2006-01-03 09:55:15 +01001538static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state)
1539{
1540 struct nfs_open_context *ctx;
1541 int ret;
1542
1543 ctx = nfs4_state_find_open_context(state);
1544 if (IS_ERR(ctx))
Trond Myklebust91876b12013-03-28 14:01:33 -04001545 return -EAGAIN;
Trond Myklebust539cd032007-06-05 11:46:42 -04001546 ret = nfs4_do_open_reclaim(ctx, state);
Trond Myklebust864472e2006-01-03 09:55:15 +01001547 put_nfs_open_context(ctx);
1548 return ret;
1549}
1550
Trond Myklebustdb4f2e632013-04-01 15:56:46 -04001551static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct nfs4_state *state, const nfs4_stateid *stateid, int err)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001552{
Trond Myklebustbe76b5b2013-04-01 15:40:44 -04001553 switch (err) {
1554 default:
1555 printk(KERN_ERR "NFS: %s: unhandled error "
1556 "%d.\n", __func__, err);
1557 case 0:
1558 case -ENOENT:
1559 case -ESTALE:
1560 break;
1561 case -NFS4ERR_BADSESSION:
1562 case -NFS4ERR_BADSLOT:
1563 case -NFS4ERR_BAD_HIGH_SLOT:
1564 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
1565 case -NFS4ERR_DEADSESSION:
1566 set_bit(NFS_DELEGATED_STATE, &state->flags);
1567 nfs4_schedule_session_recovery(server->nfs_client->cl_session, err);
1568 return -EAGAIN;
1569 case -NFS4ERR_STALE_CLIENTID:
1570 case -NFS4ERR_STALE_STATEID:
1571 set_bit(NFS_DELEGATED_STATE, &state->flags);
1572 case -NFS4ERR_EXPIRED:
1573 /* Don't recall a delegation if it was lost */
1574 nfs4_schedule_lease_recovery(server->nfs_client);
1575 return -EAGAIN;
Chuck Lever352297b2013-10-17 14:13:24 -04001576 case -NFS4ERR_MOVED:
1577 nfs4_schedule_migration_recovery(server);
1578 return -EAGAIN;
Chuck Lever8ef2f8d2013-10-17 14:13:41 -04001579 case -NFS4ERR_LEASE_MOVED:
1580 nfs4_schedule_lease_moved_recovery(server->nfs_client);
1581 return -EAGAIN;
Trond Myklebustbe76b5b2013-04-01 15:40:44 -04001582 case -NFS4ERR_DELEG_REVOKED:
1583 case -NFS4ERR_ADMIN_REVOKED:
1584 case -NFS4ERR_BAD_STATEID:
Trond Myklebustdb4f2e632013-04-01 15:56:46 -04001585 case -NFS4ERR_OPENMODE:
Trond Myklebustbe76b5b2013-04-01 15:40:44 -04001586 nfs_inode_find_state_and_recover(state->inode,
1587 stateid);
1588 nfs4_schedule_stateid_recovery(server, state);
Trond Myklebustbe76b5b2013-04-01 15:40:44 -04001589 return 0;
1590 case -NFS4ERR_DELAY:
1591 case -NFS4ERR_GRACE:
1592 set_bit(NFS_DELEGATED_STATE, &state->flags);
1593 ssleep(1);
1594 return -EAGAIN;
Trond Myklebustdb4f2e632013-04-01 15:56:46 -04001595 case -ENOMEM:
1596 case -NFS4ERR_DENIED:
1597 /* kill_proc(fl->fl_pid, SIGLOST, 1); */
1598 return 0;
Trond Myklebustbe76b5b2013-04-01 15:40:44 -04001599 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001600 return err;
1601}
1602
Trond Myklebustdb4f2e632013-04-01 15:56:46 -04001603int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
1604{
1605 struct nfs_server *server = NFS_SERVER(state->inode);
1606 struct nfs4_opendata *opendata;
1607 int err;
1608
1609 opendata = nfs4_open_recoverdata_alloc(ctx, state,
1610 NFS4_OPEN_CLAIM_DELEG_CUR_FH);
1611 if (IS_ERR(opendata))
1612 return PTR_ERR(opendata);
1613 nfs4_stateid_copy(&opendata->o_arg.u.delegation, stateid);
1614 err = nfs4_open_recover(opendata, state);
1615 nfs4_opendata_put(opendata);
1616 return nfs4_handle_delegation_recall_error(server, state, stateid, err);
1617}
1618
Chuck Leverbe05c862013-08-09 12:49:47 -04001619static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata)
1620{
1621 struct nfs4_opendata *data = calldata;
1622
Trond Myklebust17ead6c2014-02-01 14:53:23 -05001623 nfs40_setup_sequence(data->o_arg.server, &data->c_arg.seq_args,
1624 &data->c_res.seq_res, task);
Chuck Leverbe05c862013-08-09 12:49:47 -04001625}
1626
Trond Myklebustcdd4e682006-01-03 09:55:12 +01001627static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata)
1628{
1629 struct nfs4_opendata *data = calldata;
1630
Trond Myklebust17ead6c2014-02-01 14:53:23 -05001631 nfs40_sequence_done(task, &data->c_res.seq_res);
Chuck Leverbe05c862013-08-09 12:49:47 -04001632
Trond Myklebustcdd4e682006-01-03 09:55:12 +01001633 data->rpc_status = task->tk_status;
Trond Myklebust26e976a2006-01-03 09:55:21 +01001634 if (data->rpc_status == 0) {
Trond Myklebustf597c532012-03-04 18:13:56 -05001635 nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid);
Trond Myklebustbb226292008-01-02 15:19:18 -05001636 nfs_confirm_seqid(&data->owner->so_seqid, 0);
Trond Myklebust26e976a2006-01-03 09:55:21 +01001637 renew_lease(data->o_res.server, data->timestamp);
Trond Myklebust3e309912007-07-07 13:19:59 -04001638 data->rpc_done = 1;
Trond Myklebust26e976a2006-01-03 09:55:21 +01001639 }
Trond Myklebustcdd4e682006-01-03 09:55:12 +01001640}
1641
1642static void nfs4_open_confirm_release(void *calldata)
1643{
1644 struct nfs4_opendata *data = calldata;
1645 struct nfs4_state *state = NULL;
1646
1647 /* If this request hasn't been cancelled, do nothing */
1648 if (data->cancelled == 0)
1649 goto out_free;
1650 /* In case of error, no cleanup! */
Trond Myklebust3e309912007-07-07 13:19:59 -04001651 if (!data->rpc_done)
Trond Myklebustcdd4e682006-01-03 09:55:12 +01001652 goto out_free;
Trond Myklebustcdd4e682006-01-03 09:55:12 +01001653 state = nfs4_opendata_to_nfs4_state(data);
Trond Myklebust1b370bc2007-07-07 08:04:47 -04001654 if (!IS_ERR(state))
Al Viro643168c2011-06-22 18:20:23 -04001655 nfs4_close_state(state, data->o_arg.fmode);
Trond Myklebustcdd4e682006-01-03 09:55:12 +01001656out_free:
Trond Myklebustc6d00e62007-06-17 16:02:44 -04001657 nfs4_opendata_put(data);
Trond Myklebustcdd4e682006-01-03 09:55:12 +01001658}
1659
1660static const struct rpc_call_ops nfs4_open_confirm_ops = {
Chuck Leverbe05c862013-08-09 12:49:47 -04001661 .rpc_call_prepare = nfs4_open_confirm_prepare,
Trond Myklebustcdd4e682006-01-03 09:55:12 +01001662 .rpc_call_done = nfs4_open_confirm_done,
1663 .rpc_release = nfs4_open_confirm_release,
1664};
1665
1666/*
1667 * Note: On error, nfs4_proc_open_confirm will free the struct nfs4_opendata
1668 */
1669static int _nfs4_proc_open_confirm(struct nfs4_opendata *data)
1670{
1671 struct nfs_server *server = NFS_SERVER(data->dir->d_inode);
1672 struct rpc_task *task;
Trond Myklebust5138fde2007-07-14 15:40:01 -04001673 struct rpc_message msg = {
1674 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM],
1675 .rpc_argp = &data->c_arg,
1676 .rpc_resp = &data->c_res,
1677 .rpc_cred = data->owner->so_cred,
1678 };
Trond Myklebustc970aa82007-07-14 15:39:59 -04001679 struct rpc_task_setup task_setup_data = {
1680 .rpc_client = server->client,
Trond Myklebust5138fde2007-07-14 15:40:01 -04001681 .rpc_message = &msg,
Trond Myklebustc970aa82007-07-14 15:39:59 -04001682 .callback_ops = &nfs4_open_confirm_ops,
1683 .callback_data = data,
Trond Myklebust101070c2008-02-19 20:04:23 -05001684 .workqueue = nfsiod_workqueue,
Trond Myklebustc970aa82007-07-14 15:39:59 -04001685 .flags = RPC_TASK_ASYNC,
1686 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07001687 int status;
1688
Trond Myklebust17ead6c2014-02-01 14:53:23 -05001689 nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1);
Trond Myklebustc6d00e62007-06-17 16:02:44 -04001690 kref_get(&data->kref);
Trond Myklebust3e309912007-07-07 13:19:59 -04001691 data->rpc_done = 0;
1692 data->rpc_status = 0;
Trond Myklebust5138fde2007-07-14 15:40:01 -04001693 data->timestamp = jiffies;
Trond Myklebustc970aa82007-07-14 15:39:59 -04001694 task = rpc_run_task(&task_setup_data);
Trond Myklebust7a1218a2006-03-20 18:11:10 -05001695 if (IS_ERR(task))
Trond Myklebustcdd4e682006-01-03 09:55:12 +01001696 return PTR_ERR(task);
Trond Myklebustcdd4e682006-01-03 09:55:12 +01001697 status = nfs4_wait_for_completion_rpc_task(task);
1698 if (status != 0) {
1699 data->cancelled = 1;
1700 smp_wmb();
1701 } else
1702 status = data->rpc_status;
Trond Myklebuste6b3c4d2006-11-11 22:18:03 -05001703 rpc_put_task(task);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001704 return status;
1705}
1706
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001707static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001708{
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001709 struct nfs4_opendata *data = calldata;
1710 struct nfs4_state_owner *sp = data->owner;
Trond Myklebust549b19c2013-04-16 18:42:34 -04001711 struct nfs_client *clp = sp->so_server->nfs_client;
Trond Myklebust5138fde2007-07-14 15:40:01 -04001712
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001713 if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0)
Trond Myklebustc8da19b2013-02-11 19:01:21 -05001714 goto out_wait;
Trond Myklebustaac00a82007-07-05 19:02:21 -04001715 /*
1716 * Check if we still need to send an OPEN call, or if we can use
1717 * a delegation instead.
1718 */
1719 if (data->state != NULL) {
1720 struct nfs_delegation *delegation;
1721
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001722 if (can_open_cached(data->state, data->o_arg.fmode, data->o_arg.open_flags))
Trond Myklebust6ee41262007-07-08 14:11:36 -04001723 goto out_no_action;
Trond Myklebustaac00a82007-07-05 19:02:21 -04001724 rcu_read_lock();
1725 delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
Trond Myklebust652f89f2011-12-09 19:05:58 -05001726 if (data->o_arg.claim != NFS4_OPEN_CLAIM_DELEGATE_CUR &&
Trond Myklebustcd4c9be2013-04-23 14:46:25 -04001727 data->o_arg.claim != NFS4_OPEN_CLAIM_DELEG_CUR_FH &&
Trond Myklebust652f89f2011-12-09 19:05:58 -05001728 can_open_delegated(delegation, data->o_arg.fmode))
1729 goto unlock_no_action;
Trond Myklebustaac00a82007-07-05 19:02:21 -04001730 rcu_read_unlock();
1731 }
Trond Myklebust95b72eb2012-04-20 19:24:51 -04001732 /* Update client id. */
Trond Myklebust549b19c2013-04-16 18:42:34 -04001733 data->o_arg.clientid = clp->cl_clientid;
Trond Myklebust8188df12013-04-23 14:31:19 -04001734 switch (data->o_arg.claim) {
1735 case NFS4_OPEN_CLAIM_PREVIOUS:
1736 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
1737 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
Andy Adamsone23008e2012-10-02 21:07:32 -04001738 data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0];
Trond Myklebust8188df12013-04-23 14:31:19 -04001739 case NFS4_OPEN_CLAIM_FH:
1740 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
Trond Myklebust6f220ed2007-07-17 21:50:45 -04001741 nfs_copy_fh(&data->o_res.fh, data->o_arg.fh);
1742 }
Trond Myklebust26e976a2006-01-03 09:55:21 +01001743 data->timestamp = jiffies;
Trond Myklebust035168a2010-06-16 09:52:26 -04001744 if (nfs4_setup_sequence(data->o_arg.server,
Andy Adamsond8985282009-04-01 09:22:21 -04001745 &data->o_arg.seq_args,
Trond Myklebust2240a9e2012-10-29 18:37:40 -04001746 &data->o_res.seq_res,
1747 task) != 0)
1748 nfs_release_seqid(data->o_arg.seqid);
Trond Myklebust549b19c2013-04-16 18:42:34 -04001749
1750 /* Set the create mode (note dependency on the session type) */
1751 data->o_arg.createmode = NFS4_CREATE_UNCHECKED;
1752 if (data->o_arg.open_flags & O_EXCL) {
1753 data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE;
1754 if (nfs4_has_persistent_session(clp))
1755 data->o_arg.createmode = NFS4_CREATE_GUARDED;
1756 else if (clp->cl_mvops->minor_version > 0)
1757 data->o_arg.createmode = NFS4_CREATE_EXCLUSIVE4_1;
1758 }
Trond Myklebust6ee41262007-07-08 14:11:36 -04001759 return;
Trond Myklebust652f89f2011-12-09 19:05:58 -05001760unlock_no_action:
1761 rcu_read_unlock();
Trond Myklebust6ee41262007-07-08 14:11:36 -04001762out_no_action:
1763 task->tk_action = NULL;
Trond Myklebustc8da19b2013-02-11 19:01:21 -05001764out_wait:
Trond Myklebustb75ad4c2012-11-29 17:27:47 -05001765 nfs4_sequence_done(task, &data->o_res.seq_res);
Alexandros Batsakisb2579572009-12-14 21:27:57 -08001766}
1767
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001768static void nfs4_open_done(struct rpc_task *task, void *calldata)
1769{
1770 struct nfs4_opendata *data = calldata;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001771
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001772 data->rpc_status = task->tk_status;
Andy Adamsond8985282009-04-01 09:22:21 -04001773
Trond Myklebust14516c32010-07-31 14:29:06 -04001774 if (!nfs4_sequence_done(task, &data->o_res.seq_res))
1775 return;
Andy Adamsond8985282009-04-01 09:22:21 -04001776
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001777 if (task->tk_status == 0) {
Trond Myklebust807d66d82012-10-02 17:09:00 -07001778 if (data->o_res.f_attr->valid & NFS_ATTR_FATTR_TYPE) {
1779 switch (data->o_res.f_attr->mode & S_IFMT) {
Trond Myklebust6f926b52005-10-18 14:20:18 -07001780 case S_IFREG:
1781 break;
1782 case S_IFLNK:
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001783 data->rpc_status = -ELOOP;
Trond Myklebust6f926b52005-10-18 14:20:18 -07001784 break;
1785 case S_IFDIR:
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001786 data->rpc_status = -EISDIR;
Trond Myklebust6f926b52005-10-18 14:20:18 -07001787 break;
1788 default:
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001789 data->rpc_status = -ENOTDIR;
Trond Myklebust807d66d82012-10-02 17:09:00 -07001790 }
Trond Myklebust6f926b52005-10-18 14:20:18 -07001791 }
Trond Myklebust26e976a2006-01-03 09:55:21 +01001792 renew_lease(data->o_res.server, data->timestamp);
Trond Myklebust0f9f95e2007-07-08 16:19:56 -04001793 if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM))
1794 nfs_confirm_seqid(&data->owner->so_seqid, 0);
Trond Myklebust6f926b52005-10-18 14:20:18 -07001795 }
Trond Myklebust3e309912007-07-07 13:19:59 -04001796 data->rpc_done = 1;
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001797}
Trond Myklebust6f926b52005-10-18 14:20:18 -07001798
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001799static void nfs4_open_release(void *calldata)
1800{
1801 struct nfs4_opendata *data = calldata;
1802 struct nfs4_state *state = NULL;
1803
1804 /* If this request hasn't been cancelled, do nothing */
1805 if (data->cancelled == 0)
1806 goto out_free;
1807 /* In case of error, no cleanup! */
Trond Myklebust3e309912007-07-07 13:19:59 -04001808 if (data->rpc_status != 0 || !data->rpc_done)
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001809 goto out_free;
1810 /* In case we need an open_confirm, no cleanup! */
1811 if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)
1812 goto out_free;
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001813 state = nfs4_opendata_to_nfs4_state(data);
Trond Myklebust1b370bc2007-07-07 08:04:47 -04001814 if (!IS_ERR(state))
Al Viro643168c2011-06-22 18:20:23 -04001815 nfs4_close_state(state, data->o_arg.fmode);
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001816out_free:
Trond Myklebustc6d00e62007-06-17 16:02:44 -04001817 nfs4_opendata_put(data);
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001818}
1819
1820static const struct rpc_call_ops nfs4_open_ops = {
1821 .rpc_call_prepare = nfs4_open_prepare,
1822 .rpc_call_done = nfs4_open_done,
1823 .rpc_release = nfs4_open_release,
1824};
1825
Alexandros Batsakisb2579572009-12-14 21:27:57 -08001826static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover)
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001827{
1828 struct inode *dir = data->dir->d_inode;
1829 struct nfs_server *server = NFS_SERVER(dir);
1830 struct nfs_openargs *o_arg = &data->o_arg;
1831 struct nfs_openres *o_res = &data->o_res;
1832 struct rpc_task *task;
Trond Myklebust5138fde2007-07-14 15:40:01 -04001833 struct rpc_message msg = {
1834 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN],
1835 .rpc_argp = o_arg,
1836 .rpc_resp = o_res,
1837 .rpc_cred = data->owner->so_cred,
1838 };
Trond Myklebustc970aa82007-07-14 15:39:59 -04001839 struct rpc_task_setup task_setup_data = {
1840 .rpc_client = server->client,
Trond Myklebust5138fde2007-07-14 15:40:01 -04001841 .rpc_message = &msg,
Trond Myklebustc970aa82007-07-14 15:39:59 -04001842 .callback_ops = &nfs4_open_ops,
1843 .callback_data = data,
Trond Myklebust101070c2008-02-19 20:04:23 -05001844 .workqueue = nfsiod_workqueue,
Trond Myklebustc970aa82007-07-14 15:39:59 -04001845 .flags = RPC_TASK_ASYNC,
1846 };
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001847 int status;
1848
Chuck Levera9c92d62013-08-09 12:48:18 -04001849 nfs4_init_sequence(&o_arg->seq_args, &o_res->seq_res, 1);
Trond Myklebustc6d00e62007-06-17 16:02:44 -04001850 kref_get(&data->kref);
Trond Myklebust3e309912007-07-07 13:19:59 -04001851 data->rpc_done = 0;
1852 data->rpc_status = 0;
Trond Myklebust2ced46c2007-07-03 23:48:13 -04001853 data->cancelled = 0;
Trond Myklebustbdeca1b2013-04-23 14:52:44 -04001854 data->is_recover = 0;
1855 if (isrecover) {
Trond Myklebust8fe72ba2012-10-29 19:02:20 -04001856 nfs4_set_sequence_privileged(&o_arg->seq_args);
Trond Myklebustbdeca1b2013-04-23 14:52:44 -04001857 data->is_recover = 1;
1858 }
Trond Myklebustc970aa82007-07-14 15:39:59 -04001859 task = rpc_run_task(&task_setup_data);
Alexandros Batsakisb2579572009-12-14 21:27:57 -08001860 if (IS_ERR(task))
1861 return PTR_ERR(task);
1862 status = nfs4_wait_for_completion_rpc_task(task);
1863 if (status != 0) {
1864 data->cancelled = 1;
1865 smp_wmb();
1866 } else
1867 status = data->rpc_status;
1868 rpc_put_task(task);
1869
1870 return status;
1871}
1872
1873static int _nfs4_recover_proc_open(struct nfs4_opendata *data)
1874{
1875 struct inode *dir = data->dir->d_inode;
1876 struct nfs_openres *o_res = &data->o_res;
1877 int status;
1878
1879 status = nfs4_run_open_task(data, 1);
1880 if (status != 0 || !data->rpc_done)
1881 return status;
1882
Trond Myklebust6926afd2012-01-07 13:22:46 -05001883 nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr);
1884
Alexandros Batsakisb2579572009-12-14 21:27:57 -08001885 if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
1886 status = _nfs4_proc_open_confirm(data);
1887 if (status != 0)
1888 return status;
1889 }
1890
1891 return status;
1892}
1893
Weston Andros Adamson6168f622012-09-10 14:00:46 -04001894static int nfs4_opendata_access(struct rpc_cred *cred,
1895 struct nfs4_opendata *opendata,
Weston Andros Adamsonf8d9a892013-01-03 16:42:29 -05001896 struct nfs4_state *state, fmode_t fmode,
1897 int openflags)
Weston Andros Adamson6168f622012-09-10 14:00:46 -04001898{
1899 struct nfs_access_entry cache;
1900 u32 mask;
1901
1902 /* access call failed or for some reason the server doesn't
1903 * support any access modes -- defer access call until later */
1904 if (opendata->o_res.access_supported == 0)
1905 return 0;
1906
1907 mask = 0;
Weston Andros Adamsonbbd3a8e2012-10-02 14:49:51 -07001908 /* don't check MAY_WRITE - a newly created file may not have
Weston Andros Adamsonf8d9a892013-01-03 16:42:29 -05001909 * write mode bits, but POSIX allows the creating process to write.
1910 * use openflags to check for exec, because fmode won't
1911 * always have FMODE_EXEC set when file open for exec. */
1912 if (openflags & __FMODE_EXEC) {
1913 /* ONLY check for exec rights */
1914 mask = MAY_EXEC;
1915 } else if (fmode & FMODE_READ)
1916 mask = MAY_READ;
Weston Andros Adamson6168f622012-09-10 14:00:46 -04001917
1918 cache.cred = cred;
1919 cache.jiffies = jiffies;
1920 nfs_access_set_mask(&cache, opendata->o_res.access_result);
1921 nfs_access_add_cache(state->inode, &cache);
1922
Weston Andros Adamsonbbd3a8e2012-10-02 14:49:51 -07001923 if ((mask & ~cache.mask & (MAY_READ | MAY_EXEC)) == 0)
Weston Andros Adamson6168f622012-09-10 14:00:46 -04001924 return 0;
1925
1926 /* even though OPEN succeeded, access is denied. Close the file */
1927 nfs4_close_state(state, fmode);
Weston Andros Adamson998f40b2012-11-02 18:00:56 -04001928 return -EACCES;
Weston Andros Adamson6168f622012-09-10 14:00:46 -04001929}
1930
Alexandros Batsakisb2579572009-12-14 21:27:57 -08001931/*
1932 * Note: On error, nfs4_proc_open will free the struct nfs4_opendata
1933 */
1934static int _nfs4_proc_open(struct nfs4_opendata *data)
1935{
1936 struct inode *dir = data->dir->d_inode;
1937 struct nfs_server *server = NFS_SERVER(dir);
1938 struct nfs_openargs *o_arg = &data->o_arg;
1939 struct nfs_openres *o_res = &data->o_res;
1940 int status;
1941
1942 status = nfs4_run_open_task(data, 0);
Trond Myklebust08ef7bd2011-10-18 16:11:49 -07001943 if (!data->rpc_done)
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001944 return status;
Trond Myklebust08ef7bd2011-10-18 16:11:49 -07001945 if (status != 0) {
1946 if (status == -NFS4ERR_BADNAME &&
1947 !(o_arg->open_flags & O_CREAT))
1948 return -ENOENT;
1949 return status;
1950 }
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001951
Trond Myklebust6926afd2012-01-07 13:22:46 -05001952 nfs_fattr_map_and_free_names(server, &data->f_attr);
1953
Trond Myklebust5bc2afc2013-09-23 18:01:28 -04001954 if (o_arg->open_flags & O_CREAT) {
Trond Myklebust56ae19f2005-10-27 22:12:40 -04001955 update_changeattr(dir, &o_res->cinfo);
Trond Myklebust5bc2afc2013-09-23 18:01:28 -04001956 if (o_arg->open_flags & O_EXCL)
1957 data->file_created = 1;
1958 else if (o_res->cinfo.before != o_res->cinfo.after)
1959 data->file_created = 1;
1960 }
Trond Myklebust0df5dd42010-04-11 16:48:44 -04001961 if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0)
1962 server->caps &= ~NFS_CAP_POSIX_LOCK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001963 if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
Trond Myklebustcdd4e682006-01-03 09:55:12 +01001964 status = _nfs4_proc_open_confirm(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001965 if (status != 0)
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001966 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001967 }
1968 if (!(o_res->f_attr->valid & NFS_ATTR_FATTR))
David Quigley1775fd32013-05-22 12:50:42 -04001969 _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr, o_res->f_label);
Trond Myklebust24ac23a2006-01-03 09:55:11 +01001970 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001971}
1972
Andy Adamsond83217c2011-03-01 01:34:17 +00001973static int nfs4_recover_expired_lease(struct nfs_server *server)
1974{
1975 return nfs4_client_recover_expired_lease(server->nfs_client);
1976}
1977
Linus Torvalds1da177e2005-04-16 15:20:36 -07001978/*
1979 * OPEN_EXPIRED:
1980 * reclaim state on the server after a network partition.
1981 * Assumes caller holds the appropriate lock
1982 */
Trond Myklebust539cd032007-06-05 11:46:42 -04001983static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001984{
Trond Myklebuste56e0b782006-01-03 09:55:08 +01001985 struct nfs4_opendata *opendata;
Trond Myklebust864472e2006-01-03 09:55:15 +01001986 int ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001987
Trond Myklebust4a1c0892013-03-15 14:57:33 -04001988 opendata = nfs4_open_recoverdata_alloc(ctx, state,
Trond Myklebust49f9a0f2013-03-15 16:44:28 -04001989 NFS4_OPEN_CLAIM_FH);
Trond Myklebust6f220ed2007-07-17 21:50:45 -04001990 if (IS_ERR(opendata))
1991 return PTR_ERR(opendata);
Trond Myklebust864472e2006-01-03 09:55:15 +01001992 ret = nfs4_open_recover(opendata, state);
Trond Myklebust35d05772008-04-05 15:54:17 -04001993 if (ret == -ESTALE)
Al Viro3d4ff432011-06-22 18:40:12 -04001994 d_drop(ctx->dentry);
Trond Myklebustc6d00e62007-06-17 16:02:44 -04001995 nfs4_opendata_put(opendata);
Trond Myklebust864472e2006-01-03 09:55:15 +01001996 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001997}
1998
Trond Myklebusta9ed2e22009-12-03 15:53:21 -05001999static int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
Trond Myklebust202b50d2005-06-22 17:16:29 +00002000{
Trond Myklebust539cd032007-06-05 11:46:42 -04002001 struct nfs_server *server = NFS_SERVER(state->inode);
Trond Myklebust202b50d2005-06-22 17:16:29 +00002002 struct nfs4_exception exception = { };
2003 int err;
2004
2005 do {
Trond Myklebust539cd032007-06-05 11:46:42 -04002006 err = _nfs4_open_expired(ctx, state);
Trond Myklebust42113a72013-08-12 16:19:27 -04002007 trace_nfs4_open_expired(ctx, 0, err);
Trond Myklebust49f9a0f2013-03-15 16:44:28 -04002008 if (nfs4_clear_cap_atomic_open_v1(server, err, &exception))
2009 continue;
Trond Myklebusta9ed2e22009-12-03 15:53:21 -05002010 switch (err) {
2011 default:
2012 goto out;
2013 case -NFS4ERR_GRACE:
2014 case -NFS4ERR_DELAY:
2015 nfs4_handle_exception(server, err, &exception);
2016 err = 0;
2017 }
Trond Myklebust202b50d2005-06-22 17:16:29 +00002018 } while (exception.retry);
Trond Myklebusta9ed2e22009-12-03 15:53:21 -05002019out:
Trond Myklebust202b50d2005-06-22 17:16:29 +00002020 return err;
2021}
2022
Linus Torvalds1da177e2005-04-16 15:20:36 -07002023static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
2024{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002025 struct nfs_open_context *ctx;
Trond Myklebust864472e2006-01-03 09:55:15 +01002026 int ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002027
Trond Myklebust864472e2006-01-03 09:55:15 +01002028 ctx = nfs4_state_find_open_context(state);
2029 if (IS_ERR(ctx))
Trond Myklebust91876b12013-03-28 14:01:33 -04002030 return -EAGAIN;
Trond Myklebust539cd032007-06-05 11:46:42 -04002031 ret = nfs4_do_open_expired(ctx, state);
Trond Myklebust864472e2006-01-03 09:55:15 +01002032 put_nfs_open_context(ctx);
2033 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002034}
2035
Bryan Schumakerf062eb62011-06-02 14:59:10 -04002036#if defined(CONFIG_NFS_V4_1)
Chuck Lever3e60ffd2012-07-11 16:30:14 -04002037static void nfs41_clear_delegation_stateid(struct nfs4_state *state)
Bryan Schumakerf062eb62011-06-02 14:59:10 -04002038{
Bryan Schumakerf062eb62011-06-02 14:59:10 -04002039 struct nfs_server *server = NFS_SERVER(state->inode);
Chuck Lever3e60ffd2012-07-11 16:30:14 -04002040 nfs4_stateid *stateid = &state->stateid;
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04002041 struct nfs_delegation *delegation;
2042 struct rpc_cred *cred = NULL;
2043 int status = -NFS4ERR_BAD_STATEID;
Bryan Schumakerf062eb62011-06-02 14:59:10 -04002044
Chuck Lever3e60ffd2012-07-11 16:30:14 -04002045 /* If a state reset has been done, test_stateid is unneeded */
2046 if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
2047 return;
2048
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04002049 /* Get the delegation credential for use by test/free_stateid */
2050 rcu_read_lock();
2051 delegation = rcu_dereference(NFS_I(state->inode)->delegation);
2052 if (delegation != NULL &&
2053 nfs4_stateid_match(&delegation->stateid, stateid)) {
2054 cred = get_rpccred(delegation->cred);
2055 rcu_read_unlock();
2056 status = nfs41_test_stateid(server, stateid, cred);
Trond Myklebust08cb47f2013-08-20 21:59:40 -04002057 trace_nfs4_test_delegation_stateid(state, NULL, status);
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04002058 } else
2059 rcu_read_unlock();
2060
Chuck Lever3e60ffd2012-07-11 16:30:14 -04002061 if (status != NFS_OK) {
2062 /* Free the stateid unless the server explicitly
2063 * informs us the stateid is unrecognized. */
2064 if (status != -NFS4ERR_BAD_STATEID)
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04002065 nfs41_free_stateid(server, stateid, cred);
Bryan Schumaker69388672012-09-26 15:25:52 -04002066 nfs_remove_bad_delegation(state->inode);
Chuck Lever3e60ffd2012-07-11 16:30:14 -04002067
Bryan Schumaker69388672012-09-26 15:25:52 -04002068 write_seqlock(&state->seqlock);
2069 nfs4_stateid_copy(&state->stateid, &state->open_stateid);
2070 write_sequnlock(&state->seqlock);
Chuck Lever3e60ffd2012-07-11 16:30:14 -04002071 clear_bit(NFS_DELEGATED_STATE, &state->flags);
2072 }
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04002073
2074 if (cred != NULL)
2075 put_rpccred(cred);
Chuck Lever3e60ffd2012-07-11 16:30:14 -04002076}
2077
2078/**
2079 * nfs41_check_open_stateid - possibly free an open stateid
2080 *
2081 * @state: NFSv4 state for an inode
2082 *
2083 * Returns NFS_OK if recovery for this stateid is now finished.
2084 * Otherwise a negative NFS4ERR value is returned.
2085 */
2086static int nfs41_check_open_stateid(struct nfs4_state *state)
2087{
2088 struct nfs_server *server = NFS_SERVER(state->inode);
Bryan Schumakerfcb6d9c2012-09-26 15:25:53 -04002089 nfs4_stateid *stateid = &state->open_stateid;
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04002090 struct rpc_cred *cred = state->owner->so_cred;
Chuck Lever3e60ffd2012-07-11 16:30:14 -04002091 int status;
2092
2093 /* If a state reset has been done, test_stateid is unneeded */
2094 if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) &&
2095 (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) &&
2096 (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0))
2097 return -NFS4ERR_BAD_STATEID;
2098
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04002099 status = nfs41_test_stateid(server, stateid, cred);
Trond Myklebust08cb47f2013-08-20 21:59:40 -04002100 trace_nfs4_test_open_stateid(state, NULL, status);
Chuck Lever3e60ffd2012-07-11 16:30:14 -04002101 if (status != NFS_OK) {
2102 /* Free the stateid unless the server explicitly
2103 * informs us the stateid is unrecognized. */
2104 if (status != -NFS4ERR_BAD_STATEID)
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04002105 nfs41_free_stateid(server, stateid, cred);
Chuck Lever3e60ffd2012-07-11 16:30:14 -04002106
2107 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
2108 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
2109 clear_bit(NFS_O_RDWR_STATE, &state->flags);
Trond Myklebustfd068b22013-04-22 11:29:51 -04002110 clear_bit(NFS_OPEN_STATE, &state->flags);
Bryan Schumakerb01dd1d2012-01-31 10:39:30 -05002111 }
2112 return status;
2113}
2114
2115static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state)
2116{
Chuck Levereb64cf92012-07-11 16:30:05 -04002117 int status;
Bryan Schumakerb01dd1d2012-01-31 10:39:30 -05002118
Chuck Lever3e60ffd2012-07-11 16:30:14 -04002119 nfs41_clear_delegation_stateid(state);
2120 status = nfs41_check_open_stateid(state);
Chuck Levereb64cf92012-07-11 16:30:05 -04002121 if (status != NFS_OK)
2122 status = nfs4_open_expired(sp, state);
2123 return status;
Bryan Schumakerf062eb62011-06-02 14:59:10 -04002124}
2125#endif
2126
Linus Torvalds1da177e2005-04-16 15:20:36 -07002127/*
Jeff Laytonaa53ed52007-06-05 14:49:03 -04002128 * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
2129 * fields corresponding to attributes that were used to store the verifier.
2130 * Make sure we clobber those fields in the later setattr call
2131 */
2132static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr)
2133{
2134 if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) &&
2135 !(sattr->ia_valid & ATTR_ATIME_SET))
2136 sattr->ia_valid |= ATTR_ATIME;
2137
2138 if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) &&
2139 !(sattr->ia_valid & ATTR_MTIME_SET))
2140 sattr->ia_valid |= ATTR_MTIME;
2141}
2142
Trond Myklebustc21443c2013-02-07 14:26:21 -05002143static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
2144 fmode_t fmode,
2145 int flags,
Trond Myklebust3efb9722013-05-29 13:17:04 -04002146 struct nfs_open_context *ctx)
Trond Myklebustc21443c2013-02-07 14:26:21 -05002147{
2148 struct nfs4_state_owner *sp = opendata->owner;
2149 struct nfs_server *server = sp->so_server;
Trond Myklebust275bb302013-05-29 13:11:28 -04002150 struct dentry *dentry;
Trond Myklebustc21443c2013-02-07 14:26:21 -05002151 struct nfs4_state *state;
2152 unsigned int seq;
2153 int ret;
2154
2155 seq = raw_seqcount_begin(&sp->so_reclaim_seqcount);
2156
2157 ret = _nfs4_proc_open(opendata);
2158 if (ret != 0)
2159 goto out;
2160
2161 state = nfs4_opendata_to_nfs4_state(opendata);
2162 ret = PTR_ERR(state);
2163 if (IS_ERR(state))
2164 goto out;
2165 if (server->caps & NFS_CAP_POSIX_LOCK)
2166 set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
2167
Trond Myklebust275bb302013-05-29 13:11:28 -04002168 dentry = opendata->dentry;
2169 if (dentry->d_inode == NULL) {
2170 /* FIXME: Is this d_drop() ever needed? */
2171 d_drop(dentry);
2172 dentry = d_add_unique(dentry, igrab(state->inode));
2173 if (dentry == NULL) {
2174 dentry = opendata->dentry;
2175 } else if (dentry != ctx->dentry) {
2176 dput(ctx->dentry);
2177 ctx->dentry = dget(dentry);
2178 }
2179 nfs_set_verifier(dentry,
2180 nfs_save_change_attribute(opendata->dir->d_inode));
2181 }
2182
Trond Myklebustc21443c2013-02-07 14:26:21 -05002183 ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags);
2184 if (ret != 0)
2185 goto out;
2186
Trond Myklebust3efb9722013-05-29 13:17:04 -04002187 ctx->state = state;
Trond Myklebustc45ffdd2013-05-29 13:34:46 -04002188 if (dentry->d_inode == state->inode) {
2189 nfs_inode_attach_open_context(ctx);
2190 if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq))
2191 nfs4_schedule_stateid_recovery(server, state);
2192 }
Trond Myklebustc21443c2013-02-07 14:26:21 -05002193out:
2194 return ret;
2195}
2196
Jeff Laytonaa53ed52007-06-05 14:49:03 -04002197/*
Trond Myklebust24ac23a2006-01-03 09:55:11 +01002198 * Returns a referenced nfs4_state
Linus Torvalds1da177e2005-04-16 15:20:36 -07002199 */
Andy Adamson82be4172012-05-23 05:02:35 -04002200static int _nfs4_do_open(struct inode *dir,
Trond Myklebust4197a052013-05-29 12:37:49 -04002201 struct nfs_open_context *ctx,
Andy Adamson82be4172012-05-23 05:02:35 -04002202 int flags,
2203 struct iattr *sattr,
Trond Myklebust5bc2afc2013-09-23 18:01:28 -04002204 struct nfs4_label *label,
2205 int *opened)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002206{
2207 struct nfs4_state_owner *sp;
2208 struct nfs4_state *state = NULL;
2209 struct nfs_server *server = NFS_SERVER(dir);
Trond Myklebuste56e0b782006-01-03 09:55:08 +01002210 struct nfs4_opendata *opendata;
Trond Myklebust4197a052013-05-29 12:37:49 -04002211 struct dentry *dentry = ctx->dentry;
2212 struct rpc_cred *cred = ctx->cred;
2213 struct nfs4_threshold **ctx_th = &ctx->mdsthreshold;
2214 fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC);
Trond Myklebust49f9a0f2013-03-15 16:44:28 -04002215 enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL;
David Quigley1775fd32013-05-22 12:50:42 -04002216 struct nfs4_label *olabel = NULL;
Trond Myklebustaac00a82007-07-05 19:02:21 -04002217 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002218
2219 /* Protect against reboot recovery conflicts */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002220 status = -ENOMEM;
Trond Myklebustd1e284d2012-01-17 22:04:24 -05002221 sp = nfs4_get_state_owner(server, cred, GFP_KERNEL);
2222 if (sp == NULL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002223 dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n");
2224 goto out_err;
2225 }
Trond Myklebust58d97142006-01-03 09:55:24 +01002226 status = nfs4_recover_expired_lease(server);
2227 if (status != 0)
Trond Myklebustb4454fe2006-01-03 09:55:25 +01002228 goto err_put_state_owner;
Al Viro82a2c1b2011-06-22 18:30:55 -04002229 if (dentry->d_inode != NULL)
2230 nfs4_return_incompatible_delegation(dentry->d_inode, fmode);
Trond Myklebust58d97142006-01-03 09:55:24 +01002231 status = -ENOMEM;
Trond Myklebust49f9a0f2013-03-15 16:44:28 -04002232 if (dentry->d_inode)
2233 claim = NFS4_OPEN_CLAIM_FH;
Trond Myklebust4a1c0892013-03-15 14:57:33 -04002234 opendata = nfs4_opendata_alloc(dentry, sp, fmode, flags, sattr,
David Quigley1775fd32013-05-22 12:50:42 -04002235 label, claim, GFP_KERNEL);
Trond Myklebuste56e0b782006-01-03 09:55:08 +01002236 if (opendata == NULL)
Trond Myklebust95d35cb2008-12-23 15:21:45 -05002237 goto err_put_state_owner;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002238
David Quigley14c43f72013-05-22 12:50:43 -04002239 if (label) {
2240 olabel = nfs4_label_alloc(server, GFP_KERNEL);
2241 if (IS_ERR(olabel)) {
2242 status = PTR_ERR(olabel);
2243 goto err_opendata_put;
2244 }
2245 }
2246
Andy Adamson82be4172012-05-23 05:02:35 -04002247 if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) {
2248 opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc();
2249 if (!opendata->f_attr.mdsthreshold)
David Quigley14c43f72013-05-22 12:50:43 -04002250 goto err_free_label;
Trond Myklebust1549210f2012-06-05 09:16:47 -04002251 opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0];
Andy Adamson82be4172012-05-23 05:02:35 -04002252 }
Al Viro82a2c1b2011-06-22 18:30:55 -04002253 if (dentry->d_inode != NULL)
2254 opendata->state = nfs4_get_open_state(dentry->d_inode, sp);
Trond Myklebustaac00a82007-07-05 19:02:21 -04002255
Trond Myklebust3efb9722013-05-29 13:17:04 -04002256 status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx);
Weston Andros Adamson6168f622012-09-10 14:00:46 -04002257 if (status != 0)
David Quigley14c43f72013-05-22 12:50:43 -04002258 goto err_free_label;
Trond Myklebust3efb9722013-05-29 13:17:04 -04002259 state = ctx->state;
Weston Andros Adamson6168f622012-09-10 14:00:46 -04002260
Trond Myklebust549b19c2013-04-16 18:42:34 -04002261 if ((opendata->o_arg.open_flags & O_EXCL) &&
2262 (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) {
Trond Myklebust0ab64e02010-04-16 16:22:51 -04002263 nfs4_exclusive_attrset(opendata, sattr);
2264
2265 nfs_fattr_init(opendata->o_res.f_attr);
2266 status = nfs4_do_setattr(state->inode, cred,
2267 opendata->o_res.f_attr, sattr,
David Quigley1775fd32013-05-22 12:50:42 -04002268 state, label, olabel);
2269 if (status == 0) {
Trond Myklebust0ab64e02010-04-16 16:22:51 -04002270 nfs_setattr_update_inode(state->inode, sattr);
David Quigley1775fd32013-05-22 12:50:42 -04002271 nfs_post_op_update_inode(state->inode, opendata->o_res.f_attr);
David Quigleyaa9c2662013-05-22 12:50:44 -04002272 nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel);
David Quigley1775fd32013-05-22 12:50:42 -04002273 }
Trond Myklebust0ab64e02010-04-16 16:22:51 -04002274 }
Trond Myklebust5bc2afc2013-09-23 18:01:28 -04002275 if (opendata->file_created)
2276 *opened |= FILE_CREATED;
Andy Adamson82be4172012-05-23 05:02:35 -04002277
2278 if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server))
2279 *ctx_th = opendata->f_attr.mdsthreshold;
2280 else
2281 kfree(opendata->f_attr.mdsthreshold);
2282 opendata->f_attr.mdsthreshold = NULL;
2283
David Quigley14c43f72013-05-22 12:50:43 -04002284 nfs4_label_free(olabel);
2285
Trond Myklebustc6d00e62007-06-17 16:02:44 -04002286 nfs4_opendata_put(opendata);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002287 nfs4_put_state_owner(sp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002288 return 0;
David Quigley14c43f72013-05-22 12:50:43 -04002289err_free_label:
2290 nfs4_label_free(olabel);
Trond Myklebustc6d00e62007-06-17 16:02:44 -04002291err_opendata_put:
Andy Adamson82be4172012-05-23 05:02:35 -04002292 kfree(opendata->f_attr.mdsthreshold);
Trond Myklebustc6d00e62007-06-17 16:02:44 -04002293 nfs4_opendata_put(opendata);
Trond Myklebuste56e0b782006-01-03 09:55:08 +01002294err_put_state_owner:
2295 nfs4_put_state_owner(sp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002296out_err:
Linus Torvalds1da177e2005-04-16 15:20:36 -07002297 return status;
2298}
2299
2300
Andy Adamson82be4172012-05-23 05:02:35 -04002301static struct nfs4_state *nfs4_do_open(struct inode *dir,
Trond Myklebust4197a052013-05-29 12:37:49 -04002302 struct nfs_open_context *ctx,
Andy Adamson82be4172012-05-23 05:02:35 -04002303 int flags,
2304 struct iattr *sattr,
Trond Myklebust5bc2afc2013-09-23 18:01:28 -04002305 struct nfs4_label *label,
2306 int *opened)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002307{
Trond Myklebust49f9a0f2013-03-15 16:44:28 -04002308 struct nfs_server *server = NFS_SERVER(dir);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002309 struct nfs4_exception exception = { };
2310 struct nfs4_state *res;
2311 int status;
2312
2313 do {
Trond Myklebust5bc2afc2013-09-23 18:01:28 -04002314 status = _nfs4_do_open(dir, ctx, flags, sattr, label, opened);
Trond Myklebust3efb9722013-05-29 13:17:04 -04002315 res = ctx->state;
Trond Myklebust42113a72013-08-12 16:19:27 -04002316 trace_nfs4_open_file(ctx, flags, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002317 if (status == 0)
2318 break;
2319 /* NOTE: BAD_SEQID means the server and client disagree about the
2320 * book-keeping w.r.t. state-changing operations
2321 * (OPEN/CLOSE/LOCK/LOCKU...)
2322 * It is actually a sign of a bug on the client or on the server.
2323 *
2324 * If we receive a BAD_SEQID error in the particular case of
Trond Myklebustcee54fc2005-10-18 14:20:12 -07002325 * doing an OPEN, we assume that nfs_increment_open_seqid() will
Linus Torvalds1da177e2005-04-16 15:20:36 -07002326 * have unhashed the old state_owner for us, and that we can
2327 * therefore safely retry using a new one. We should still warn
2328 * the user though...
2329 */
2330 if (status == -NFS4ERR_BAD_SEQID) {
Trond Myklebust9a3ba432012-03-12 18:01:48 -04002331 pr_warn_ratelimited("NFS: v4 server %s "
Trond Myklebust6f43ddc2007-07-08 16:49:11 -04002332 " returned a bad sequence-id error!\n",
2333 NFS_SERVER(dir)->nfs_client->cl_hostname);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002334 exception.retry = 1;
2335 continue;
2336 }
Trond Myklebust550f5742005-10-18 14:20:21 -07002337 /*
2338 * BAD_STATEID on OPEN means that the server cancelled our
2339 * state before it received the OPEN_CONFIRM.
2340 * Recover by retrying the request as per the discussion
2341 * on Page 181 of RFC3530.
2342 */
2343 if (status == -NFS4ERR_BAD_STATEID) {
2344 exception.retry = 1;
2345 continue;
2346 }
Trond Myklebustaac00a82007-07-05 19:02:21 -04002347 if (status == -EAGAIN) {
2348 /* We must have found a delegation */
2349 exception.retry = 1;
2350 continue;
2351 }
Trond Myklebust49f9a0f2013-03-15 16:44:28 -04002352 if (nfs4_clear_cap_atomic_open_v1(server, status, &exception))
2353 continue;
2354 res = ERR_PTR(nfs4_handle_exception(server,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002355 status, &exception));
2356 } while (exception.retry);
2357 return res;
2358}
2359
Trond Myklebust659bfcd2008-06-10 19:39:41 -04002360static int _nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
2361 struct nfs_fattr *fattr, struct iattr *sattr,
David Quigley1775fd32013-05-22 12:50:42 -04002362 struct nfs4_state *state, struct nfs4_label *ilabel,
2363 struct nfs4_label *olabel)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002364{
Trond Myklebust3e4f6292006-03-20 13:44:46 -05002365 struct nfs_server *server = NFS_SERVER(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002366 struct nfs_setattrargs arg = {
Trond Myklebust3e4f6292006-03-20 13:44:46 -05002367 .fh = NFS_FH(inode),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002368 .iap = sattr,
2369 .server = server,
2370 .bitmask = server->attr_bitmask,
David Quigley1775fd32013-05-22 12:50:42 -04002371 .label = ilabel,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002372 };
2373 struct nfs_setattrres res = {
2374 .fattr = fattr,
David Quigley1775fd32013-05-22 12:50:42 -04002375 .label = olabel,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002376 .server = server,
2377 };
2378 struct rpc_message msg = {
Trond Myklebust659bfcd2008-06-10 19:39:41 -04002379 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
2380 .rpc_argp = &arg,
2381 .rpc_resp = &res,
2382 .rpc_cred = cred,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002383 };
Trond Myklebust26e976a2006-01-03 09:55:21 +01002384 unsigned long timestamp = jiffies;
Trond Myklebustee3ae842013-04-29 10:35:36 -04002385 fmode_t fmode;
2386 bool truncate;
Trond Myklebust65e43082005-08-16 11:49:44 -04002387 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002388
David Quigleyaa9c2662013-05-22 12:50:44 -04002389 arg.bitmask = nfs4_bitmask(server, ilabel);
2390 if (ilabel)
2391 arg.bitmask = nfs4_bitmask(server, olabel);
2392
Trond Myklebust0e574af2005-10-27 22:12:38 -04002393 nfs_fattr_init(fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002394
Trond Myklebustee3ae842013-04-29 10:35:36 -04002395 /* Servers should only apply open mode checks for file size changes */
2396 truncate = (sattr->ia_valid & ATTR_SIZE) ? true : false;
2397 fmode = truncate ? FMODE_WRITE : FMODE_READ;
2398
2399 if (nfs4_copy_delegation_stateid(&arg.stateid, inode, fmode)) {
2400 /* Use that stateid */
Trond Myklebust0418dae2014-03-04 13:48:16 -05002401 } else if (truncate && state != NULL) {
Trond Myklebust2a369152012-08-13 18:54:45 -04002402 struct nfs_lockowner lockowner = {
2403 .l_owner = current->files,
2404 .l_pid = current->tgid,
2405 };
Trond Myklebust0418dae2014-03-04 13:48:16 -05002406 if (!nfs4_valid_open_stateid(state))
2407 return -EBADF;
2408 if (nfs4_select_rw_stateid(&arg.stateid, state, FMODE_WRITE,
2409 &lockowner) == -EIO)
2410 return -EBADF;
Trond Myklebust08e9eac2005-06-22 17:16:29 +00002411 } else
Trond Myklebustf597c532012-03-04 18:13:56 -05002412 nfs4_stateid_copy(&arg.stateid, &zero_stateid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002413
Bryan Schumaker7c513052011-03-24 17:12:24 +00002414 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
Trond Myklebust26e976a2006-01-03 09:55:21 +01002415 if (status == 0 && state != NULL)
2416 renew_lease(server, timestamp);
Trond Myklebust65e43082005-08-16 11:49:44 -04002417 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002418}
2419
Trond Myklebust659bfcd2008-06-10 19:39:41 -04002420static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred,
2421 struct nfs_fattr *fattr, struct iattr *sattr,
David Quigley1775fd32013-05-22 12:50:42 -04002422 struct nfs4_state *state, struct nfs4_label *ilabel,
2423 struct nfs4_label *olabel)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002424{
Trond Myklebust3e4f6292006-03-20 13:44:46 -05002425 struct nfs_server *server = NFS_SERVER(inode);
Trond Myklebusta1d0b5e2012-03-05 19:56:44 -05002426 struct nfs4_exception exception = {
2427 .state = state,
Trond Myklebust3114ea72012-03-07 16:39:06 -05002428 .inode = inode,
Trond Myklebusta1d0b5e2012-03-05 19:56:44 -05002429 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002430 int err;
2431 do {
David Quigley1775fd32013-05-22 12:50:42 -04002432 err = _nfs4_do_setattr(inode, cred, fattr, sattr, state, ilabel, olabel);
Trond Myklebustc1578b72013-08-12 16:58:42 -04002433 trace_nfs4_setattr(inode, err);
Trond Myklebust451146b2012-04-18 16:29:11 -04002434 switch (err) {
2435 case -NFS4ERR_OPENMODE:
Trond Myklebust721ccfb2013-04-29 11:11:58 -04002436 if (!(sattr->ia_valid & ATTR_SIZE)) {
2437 pr_warn_once("NFSv4: server %s is incorrectly "
2438 "applying open mode checks to "
2439 "a SETATTR that is not "
2440 "changing file size.\n",
2441 server->nfs_client->cl_hostname);
2442 }
Trond Myklebust451146b2012-04-18 16:29:11 -04002443 if (state && !(state->state & FMODE_WRITE)) {
2444 err = -EBADF;
2445 if (sattr->ia_valid & ATTR_OPEN)
2446 err = -EACCES;
2447 goto out;
2448 }
2449 }
2450 err = nfs4_handle_exception(server, err, &exception);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002451 } while (exception.retry);
Trond Myklebust451146b2012-04-18 16:29:11 -04002452out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07002453 return err;
2454}
2455
2456struct nfs4_closedata {
2457 struct inode *inode;
2458 struct nfs4_state *state;
2459 struct nfs_closeargs arg;
2460 struct nfs_closeres res;
Trond Myklebust516a6af2005-10-27 22:12:41 -04002461 struct nfs_fattr fattr;
Trond Myklebust26e976a2006-01-03 09:55:21 +01002462 unsigned long timestamp;
Fred Isamanf7e89172011-01-06 11:36:32 +00002463 bool roc;
2464 u32 roc_barrier;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002465};
2466
Trond Myklebust963d8fe2006-01-03 09:55:04 +01002467static void nfs4_free_closedata(void *data)
Trond Myklebust95121352005-10-18 14:20:12 -07002468{
Trond Myklebust963d8fe2006-01-03 09:55:04 +01002469 struct nfs4_closedata *calldata = data;
2470 struct nfs4_state_owner *sp = calldata->state->owner;
Al Viro643168c2011-06-22 18:20:23 -04002471 struct super_block *sb = calldata->state->inode->i_sb;
Trond Myklebust95121352005-10-18 14:20:12 -07002472
Fred Isamanf7e89172011-01-06 11:36:32 +00002473 if (calldata->roc)
2474 pnfs_roc_release(calldata->state->inode);
Trond Myklebust95121352005-10-18 14:20:12 -07002475 nfs4_put_open_state(calldata->state);
2476 nfs_free_seqid(calldata->arg.seqid);
Trond Myklebust95121352005-10-18 14:20:12 -07002477 nfs4_put_state_owner(sp);
Trond Myklebust322b2b92013-01-11 16:39:51 -05002478 nfs_sb_deactive(sb);
Trond Myklebust95121352005-10-18 14:20:12 -07002479 kfree(calldata);
2480}
2481
Trond Myklebust88069f72009-12-08 08:33:16 -05002482static void nfs4_close_clear_stateid_flags(struct nfs4_state *state,
2483 fmode_t fmode)
2484{
2485 spin_lock(&state->owner->so_lock);
Trond Myklebust88069f72009-12-08 08:33:16 -05002486 clear_bit(NFS_O_RDWR_STATE, &state->flags);
Trond Myklebustfd068b22013-04-22 11:29:51 -04002487 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
2488 case FMODE_WRITE:
2489 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
2490 break;
2491 case FMODE_READ:
2492 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
2493 break;
2494 case 0:
2495 clear_bit(NFS_O_RDONLY_STATE, &state->flags);
2496 clear_bit(NFS_O_WRONLY_STATE, &state->flags);
2497 clear_bit(NFS_OPEN_STATE, &state->flags);
2498 }
Trond Myklebust88069f72009-12-08 08:33:16 -05002499 spin_unlock(&state->owner->so_lock);
2500}
2501
Trond Myklebust963d8fe2006-01-03 09:55:04 +01002502static void nfs4_close_done(struct rpc_task *task, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002503{
Trond Myklebust963d8fe2006-01-03 09:55:04 +01002504 struct nfs4_closedata *calldata = data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002505 struct nfs4_state *state = calldata->state;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002506 struct nfs_server *server = NFS_SERVER(calldata->inode);
2507
Chuck Levera3ca5652012-03-01 17:00:40 -05002508 dprintk("%s: begin!\n", __func__);
Trond Myklebust14516c32010-07-31 14:29:06 -04002509 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
2510 return;
Trond Myklebust42113a72013-08-12 16:19:27 -04002511 trace_nfs4_close(state, &calldata->arg, &calldata->res, task->tk_status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002512 /* hmm. we are done with the inode, and in the process of freeing
2513 * the state_owner. we keep this around to process errors
2514 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002515 switch (task->tk_status) {
2516 case 0:
Fred Isamanf7e89172011-01-06 11:36:32 +00002517 if (calldata->roc)
2518 pnfs_roc_set_barrier(state->inode,
2519 calldata->roc_barrier);
Trond Myklebust45328c32007-07-26 17:47:34 -04002520 nfs_set_open_stateid(state, &calldata->res.stateid, 0);
Trond Myklebust26e976a2006-01-03 09:55:21 +01002521 renew_lease(server, calldata->timestamp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002522 break;
Trond Myklebust69794ad2013-11-20 12:57:19 -05002523 case -NFS4ERR_ADMIN_REVOKED:
Linus Torvalds1da177e2005-04-16 15:20:36 -07002524 case -NFS4ERR_STALE_STATEID:
Trond Myklebust9e33bed2008-12-23 15:21:46 -05002525 case -NFS4ERR_OLD_STATEID:
2526 case -NFS4ERR_BAD_STATEID:
Linus Torvalds1da177e2005-04-16 15:20:36 -07002527 case -NFS4ERR_EXPIRED:
Trond Myklebustdc0b0272008-12-23 15:21:56 -05002528 if (calldata->arg.fmode == 0)
Trond Myklebust9e33bed2008-12-23 15:21:46 -05002529 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002530 default:
Trond Myklebust69794ad2013-11-20 12:57:19 -05002531 if (nfs4_async_handle_error(task, server, state) == -EAGAIN) {
Trond Myklebust72211db2009-12-15 14:47:36 -05002532 rpc_restart_call_prepare(task);
Trond Myklebust69794ad2013-11-20 12:57:19 -05002533 goto out_release;
2534 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002535 }
Trond Myklebust69794ad2013-11-20 12:57:19 -05002536 nfs4_close_clear_stateid_flags(state, calldata->arg.fmode);
2537out_release:
Trond Myklebust72211db2009-12-15 14:47:36 -05002538 nfs_release_seqid(calldata->arg.seqid);
Trond Myklebust516a6af2005-10-27 22:12:41 -04002539 nfs_refresh_inode(calldata->inode, calldata->res.fattr);
Chuck Levera3ca5652012-03-01 17:00:40 -05002540 dprintk("%s: done, ret = %d!\n", __func__, task->tk_status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002541}
2542
Trond Myklebust4ce70ad2006-01-03 09:55:05 +01002543static void nfs4_close_prepare(struct rpc_task *task, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002544{
Trond Myklebust4ce70ad2006-01-03 09:55:05 +01002545 struct nfs4_closedata *calldata = data;
Trond Myklebust95121352005-10-18 14:20:12 -07002546 struct nfs4_state *state = calldata->state;
Trond Myklebust7fdab062012-09-20 20:15:57 -04002547 struct inode *inode = calldata->inode;
Trond Myklebust88069f72009-12-08 08:33:16 -05002548 int call_close = 0;
Trond Myklebust95121352005-10-18 14:20:12 -07002549
Chuck Levera3ca5652012-03-01 17:00:40 -05002550 dprintk("%s: begin!\n", __func__);
Trond Myklebust963d8fe2006-01-03 09:55:04 +01002551 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
Trond Myklebustc8da19b2013-02-11 19:01:21 -05002552 goto out_wait;
Trond Myklebust003707c2007-07-05 18:07:55 -04002553
Trond Myklebust88069f72009-12-08 08:33:16 -05002554 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
2555 calldata->arg.fmode = FMODE_READ|FMODE_WRITE;
Trond Myklebust4cecb762005-11-04 15:32:58 -05002556 spin_lock(&state->owner->so_lock);
Trond Myklebust003707c2007-07-05 18:07:55 -04002557 /* Calculate the change in open mode */
Trond Myklebuste7616922006-01-03 09:55:13 +01002558 if (state->n_rdwr == 0) {
Trond Myklebust003707c2007-07-05 18:07:55 -04002559 if (state->n_rdonly == 0) {
Trond Myklebust88069f72009-12-08 08:33:16 -05002560 call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags);
2561 call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
2562 calldata->arg.fmode &= ~FMODE_READ;
Trond Myklebust003707c2007-07-05 18:07:55 -04002563 }
2564 if (state->n_wronly == 0) {
Trond Myklebust88069f72009-12-08 08:33:16 -05002565 call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags);
2566 call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags);
2567 calldata->arg.fmode &= ~FMODE_WRITE;
Trond Myklebust003707c2007-07-05 18:07:55 -04002568 }
Trond Myklebuste7616922006-01-03 09:55:13 +01002569 }
Trond Myklebust5d422302013-03-14 16:57:48 -04002570 if (!nfs4_valid_open_stateid(state))
2571 call_close = 0;
Trond Myklebust4cecb762005-11-04 15:32:58 -05002572 spin_unlock(&state->owner->so_lock);
Trond Myklebust88069f72009-12-08 08:33:16 -05002573
2574 if (!call_close) {
Trond Myklebust963d8fe2006-01-03 09:55:04 +01002575 /* Note: exit _without_ calling nfs4_close_done */
Trond Myklebustc8da19b2013-02-11 19:01:21 -05002576 goto out_no_action;
Trond Myklebust95121352005-10-18 14:20:12 -07002577 }
Trond Myklebust88069f72009-12-08 08:33:16 -05002578
Fred Isamanf7e89172011-01-06 11:36:32 +00002579 if (calldata->arg.fmode == 0) {
Trond Myklebust88069f72009-12-08 08:33:16 -05002580 task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE];
Fred Isamanf7e89172011-01-06 11:36:32 +00002581 if (calldata->roc &&
Andy Adamsonb9536ad2013-04-11 09:28:45 -04002582 pnfs_roc_drain(inode, &calldata->roc_barrier, task)) {
2583 nfs_release_seqid(calldata->arg.seqid);
Trond Myklebustc8da19b2013-02-11 19:01:21 -05002584 goto out_wait;
Andy Adamsonb9536ad2013-04-11 09:28:45 -04002585 }
Fred Isamanf7e89172011-01-06 11:36:32 +00002586 }
Trond Myklebust88069f72009-12-08 08:33:16 -05002587
Trond Myklebust516a6af2005-10-27 22:12:41 -04002588 nfs_fattr_init(calldata->res.fattr);
Trond Myklebust26e976a2006-01-03 09:55:21 +01002589 calldata->timestamp = jiffies;
Trond Myklebust7fdab062012-09-20 20:15:57 -04002590 if (nfs4_setup_sequence(NFS_SERVER(inode),
Trond Myklebust9d12b212012-01-17 22:04:25 -05002591 &calldata->arg.seq_args,
2592 &calldata->res.seq_res,
Trond Myklebust2240a9e2012-10-29 18:37:40 -04002593 task) != 0)
2594 nfs_release_seqid(calldata->arg.seqid);
Chuck Levera3ca5652012-03-01 17:00:40 -05002595 dprintk("%s: done!\n", __func__);
Trond Myklebustc8da19b2013-02-11 19:01:21 -05002596 return;
2597out_no_action:
2598 task->tk_action = NULL;
2599out_wait:
2600 nfs4_sequence_done(task, &calldata->res.seq_res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002601}
2602
Trond Myklebust963d8fe2006-01-03 09:55:04 +01002603static const struct rpc_call_ops nfs4_close_ops = {
Trond Myklebust4ce70ad2006-01-03 09:55:05 +01002604 .rpc_call_prepare = nfs4_close_prepare,
Trond Myklebust963d8fe2006-01-03 09:55:04 +01002605 .rpc_call_done = nfs4_close_done,
2606 .rpc_release = nfs4_free_closedata,
2607};
2608
Linus Torvalds1da177e2005-04-16 15:20:36 -07002609/*
2610 * It is possible for data to be read/written from a mem-mapped file
2611 * after the sys_close call (which hits the vfs layer as a flush).
2612 * This means that we can't safely call nfsv4 close on a file until
2613 * the inode is cleared. This in turn means that we are not good
2614 * NFSv4 citizens - we do not indicate to the server to update the file's
2615 * share state even when we are done with one of the three share
2616 * stateid's in the inode.
2617 *
2618 * NOTE: Caller must be holding the sp->so_owner semaphore!
2619 */
Trond Myklebust1f7977c2012-09-20 20:31:51 -04002620int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002621{
Trond Myklebust4a35bd42007-06-05 10:31:33 -04002622 struct nfs_server *server = NFS_SERVER(state->inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002623 struct nfs4_closedata *calldata;
Trond Myklebustb39e6252007-06-11 23:05:07 -04002624 struct nfs4_state_owner *sp = state->owner;
2625 struct rpc_task *task;
Trond Myklebust5138fde2007-07-14 15:40:01 -04002626 struct rpc_message msg = {
2627 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE],
2628 .rpc_cred = state->owner->so_cred,
2629 };
Trond Myklebustc970aa82007-07-14 15:39:59 -04002630 struct rpc_task_setup task_setup_data = {
2631 .rpc_client = server->client,
Trond Myklebust5138fde2007-07-14 15:40:01 -04002632 .rpc_message = &msg,
Trond Myklebustc970aa82007-07-14 15:39:59 -04002633 .callback_ops = &nfs4_close_ops,
Trond Myklebust101070c2008-02-19 20:04:23 -05002634 .workqueue = nfsiod_workqueue,
Trond Myklebustc970aa82007-07-14 15:39:59 -04002635 .flags = RPC_TASK_ASYNC,
2636 };
Trond Myklebust95121352005-10-18 14:20:12 -07002637 int status = -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002638
Weston Andros Adamsonfa940722013-08-13 16:37:34 -04002639 nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP,
2640 &task_setup_data.rpc_client, &msg);
2641
Trond Myklebust8535b2b2010-05-13 12:51:01 -04002642 calldata = kzalloc(sizeof(*calldata), gfp_mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002643 if (calldata == NULL)
Trond Myklebust95121352005-10-18 14:20:12 -07002644 goto out;
Chuck Levera9c92d62013-08-09 12:48:18 -04002645 nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 1);
Trond Myklebust4a35bd42007-06-05 10:31:33 -04002646 calldata->inode = state->inode;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002647 calldata->state = state;
Trond Myklebust4a35bd42007-06-05 10:31:33 -04002648 calldata->arg.fh = NFS_FH(state->inode);
Trond Myklebust003707c2007-07-05 18:07:55 -04002649 calldata->arg.stateid = &state->open_stateid;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002650 /* Serialization for the sequence id */
Trond Myklebust8535b2b2010-05-13 12:51:01 -04002651 calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid, gfp_mask);
Trond Myklebust95121352005-10-18 14:20:12 -07002652 if (calldata->arg.seqid == NULL)
2653 goto out_free_calldata;
Trond Myklebustdc0b0272008-12-23 15:21:56 -05002654 calldata->arg.fmode = 0;
Trond Myklebusta65318b2009-03-11 14:10:28 -04002655 calldata->arg.bitmask = server->cache_consistency_bitmask;
Trond Myklebust516a6af2005-10-27 22:12:41 -04002656 calldata->res.fattr = &calldata->fattr;
Trond Myklebustc1d51932008-04-07 13:20:54 -04002657 calldata->res.seqid = calldata->arg.seqid;
Trond Myklebust516a6af2005-10-27 22:12:41 -04002658 calldata->res.server = server;
Trond Myklebust1f7977c2012-09-20 20:31:51 -04002659 calldata->roc = pnfs_roc(state->inode);
Al Viro643168c2011-06-22 18:20:23 -04002660 nfs_sb_active(calldata->inode->i_sb);
Trond Myklebust95121352005-10-18 14:20:12 -07002661
Trond Myklebust1174dd12010-12-21 10:52:24 -05002662 msg.rpc_argp = &calldata->arg;
2663 msg.rpc_resp = &calldata->res;
Trond Myklebustc970aa82007-07-14 15:39:59 -04002664 task_setup_data.callback_data = calldata;
2665 task = rpc_run_task(&task_setup_data);
Trond Myklebustb39e6252007-06-11 23:05:07 -04002666 if (IS_ERR(task))
2667 return PTR_ERR(task);
Trond Myklebusta49c3c72007-10-18 18:03:27 -04002668 status = 0;
2669 if (wait)
2670 status = rpc_wait_for_completion_task(task);
Trond Myklebustb39e6252007-06-11 23:05:07 -04002671 rpc_put_task(task);
Trond Myklebusta49c3c72007-10-18 18:03:27 -04002672 return status;
Trond Myklebust95121352005-10-18 14:20:12 -07002673out_free_calldata:
2674 kfree(calldata);
2675out:
Trond Myklebustb39e6252007-06-11 23:05:07 -04002676 nfs4_put_open_state(state);
2677 nfs4_put_state_owner(sp);
Trond Myklebust95121352005-10-18 14:20:12 -07002678 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002679}
2680
Trond Myklebust2b484292010-09-17 10:56:51 -04002681static struct inode *
Trond Myklebust5bc2afc2013-09-23 18:01:28 -04002682nfs4_atomic_open(struct inode *dir, struct nfs_open_context *ctx,
2683 int open_flags, struct iattr *attr, int *opened)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002684{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002685 struct nfs4_state *state;
David Quigleyaa9c2662013-05-22 12:50:44 -04002686 struct nfs4_label l = {0, 0, 0, NULL}, *label = NULL;
2687
2688 label = nfs4_label_init_security(dir, ctx->dentry, attr, &l);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002689
Trond Myklebust565277f2007-10-15 18:17:53 -04002690 /* Protect against concurrent sillydeletes */
Trond Myklebust5bc2afc2013-09-23 18:01:28 -04002691 state = nfs4_do_open(dir, ctx, open_flags, attr, label, opened);
David Quigleyaa9c2662013-05-22 12:50:44 -04002692
2693 nfs4_label_release_security(label);
2694
Trond Myklebustf46e0bd2010-09-17 10:56:50 -04002695 if (IS_ERR(state))
2696 return ERR_CAST(state);
Trond Myklebust275bb302013-05-29 13:11:28 -04002697 return state->inode;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002698}
2699
Trond Myklebust1185a552009-12-03 15:54:02 -05002700static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
Trond Myklebust7fe5c392009-03-19 15:35:50 -04002701{
2702 if (ctx->state == NULL)
2703 return;
2704 if (is_sync)
Al Viro643168c2011-06-22 18:20:23 -04002705 nfs4_close_sync(ctx->state, ctx->mode);
Trond Myklebust7fe5c392009-03-19 15:35:50 -04002706 else
Al Viro643168c2011-06-22 18:20:23 -04002707 nfs4_close_state(ctx->state, ctx->mode);
Trond Myklebust7fe5c392009-03-19 15:35:50 -04002708}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002709
Trond Myklebustb944dba2013-11-04 15:20:20 -05002710#define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
2711#define FATTR4_WORD2_NFS41_MASK (2*FATTR4_WORD2_SUPPATTR_EXCLCREAT - 1UL)
2712#define FATTR4_WORD2_NFS42_MASK (2*FATTR4_WORD2_CHANGE_SECURITY_LABEL - 1UL)
2713
Linus Torvalds1da177e2005-04-16 15:20:36 -07002714static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
2715{
Benny Halevy43652ad2009-04-01 09:21:54 -04002716 struct nfs4_server_caps_arg args = {
2717 .fhandle = fhandle,
2718 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002719 struct nfs4_server_caps_res res = {};
2720 struct rpc_message msg = {
2721 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SERVER_CAPS],
Benny Halevy43652ad2009-04-01 09:21:54 -04002722 .rpc_argp = &args,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002723 .rpc_resp = &res,
2724 };
2725 int status;
2726
Bryan Schumaker7c513052011-03-24 17:12:24 +00002727 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002728 if (status == 0) {
Trond Myklebustb944dba2013-11-04 15:20:20 -05002729 /* Sanity check the server answers */
2730 switch (server->nfs_client->cl_minorversion) {
2731 case 0:
2732 res.attr_bitmask[1] &= FATTR4_WORD1_NFS40_MASK;
2733 res.attr_bitmask[2] = 0;
2734 break;
2735 case 1:
2736 res.attr_bitmask[2] &= FATTR4_WORD2_NFS41_MASK;
2737 break;
2738 case 2:
2739 res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK;
2740 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002741 memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask));
Trond Myklebust62ab460c2009-08-09 15:06:19 -04002742 server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS|
2743 NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
2744 NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|
2745 NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME|
Trond Myklebustb944dba2013-11-04 15:20:20 -05002746 NFS_CAP_CTIME|NFS_CAP_MTIME|
2747 NFS_CAP_SECURITY_LABEL);
Malahal Naineni7dd7d952014-01-23 08:54:55 -06002748 if (res.attr_bitmask[0] & FATTR4_WORD0_ACL &&
2749 res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002750 server->caps |= NFS_CAP_ACLS;
2751 if (res.has_links != 0)
2752 server->caps |= NFS_CAP_HARDLINKS;
2753 if (res.has_symlinks != 0)
2754 server->caps |= NFS_CAP_SYMLINKS;
Trond Myklebust62ab460c2009-08-09 15:06:19 -04002755 if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID)
2756 server->caps |= NFS_CAP_FILEID;
2757 if (res.attr_bitmask[1] & FATTR4_WORD1_MODE)
2758 server->caps |= NFS_CAP_MODE;
2759 if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS)
2760 server->caps |= NFS_CAP_NLINK;
2761 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER)
2762 server->caps |= NFS_CAP_OWNER;
2763 if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP)
2764 server->caps |= NFS_CAP_OWNER_GROUP;
2765 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS)
2766 server->caps |= NFS_CAP_ATIME;
2767 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA)
2768 server->caps |= NFS_CAP_CTIME;
2769 if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY)
2770 server->caps |= NFS_CAP_MTIME;
David Quigleyaa9c2662013-05-22 12:50:44 -04002771#ifdef CONFIG_NFS_V4_SECURITY_LABEL
2772 if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL)
2773 server->caps |= NFS_CAP_SECURITY_LABEL;
2774#endif
2775 memcpy(server->attr_bitmask_nl, res.attr_bitmask,
2776 sizeof(server->attr_bitmask));
Trond Myklebustb944dba2013-11-04 15:20:20 -05002777 server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
Trond Myklebust62ab460c2009-08-09 15:06:19 -04002778
Trond Myklebusta65318b2009-03-11 14:10:28 -04002779 memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask));
2780 server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE;
2781 server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
Trond Myklebustb944dba2013-11-04 15:20:20 -05002782 server->cache_consistency_bitmask[2] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002783 server->acl_bitmask = res.acl_bitmask;
Chuck Lever264e6352012-03-01 17:02:05 -05002784 server->fh_expire_type = res.fh_expire_type;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002785 }
Andy Adamsoncccef3b2009-04-01 09:22:03 -04002786
Linus Torvalds1da177e2005-04-16 15:20:36 -07002787 return status;
2788}
2789
Trond Myklebust55a97592006-06-09 09:34:19 -04002790int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002791{
2792 struct nfs4_exception exception = { };
2793 int err;
2794 do {
2795 err = nfs4_handle_exception(server,
2796 _nfs4_server_capabilities(server, fhandle),
2797 &exception);
2798 } while (exception.retry);
2799 return err;
2800}
2801
2802static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
2803 struct nfs_fsinfo *info)
2804{
David Quigleyaa9c2662013-05-22 12:50:44 -04002805 u32 bitmask[3];
Linus Torvalds1da177e2005-04-16 15:20:36 -07002806 struct nfs4_lookup_root_arg args = {
David Quigleyaa9c2662013-05-22 12:50:44 -04002807 .bitmask = bitmask,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002808 };
2809 struct nfs4_lookup_res res = {
2810 .server = server,
Trond Myklebust0e574af2005-10-27 22:12:38 -04002811 .fattr = info->fattr,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002812 .fh = fhandle,
2813 };
2814 struct rpc_message msg = {
2815 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP_ROOT],
2816 .rpc_argp = &args,
2817 .rpc_resp = &res,
2818 };
Benny Halevy008f55d2009-04-01 09:22:50 -04002819
David Quigleyaa9c2662013-05-22 12:50:44 -04002820 bitmask[0] = nfs4_fattr_bitmap[0];
2821 bitmask[1] = nfs4_fattr_bitmap[1];
2822 /*
2823 * Process the label in the upcoming getfattr
2824 */
2825 bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL;
2826
Trond Myklebust0e574af2005-10-27 22:12:38 -04002827 nfs_fattr_init(info->fattr);
Bryan Schumaker7c513052011-03-24 17:12:24 +00002828 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002829}
2830
2831static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
2832 struct nfs_fsinfo *info)
2833{
2834 struct nfs4_exception exception = { };
2835 int err;
2836 do {
Bryan Schumakerfb8a5ba2011-04-18 16:52:25 -04002837 err = _nfs4_lookup_root(server, fhandle, info);
Trond Myklebustb5f875a2013-08-13 13:01:39 -04002838 trace_nfs4_lookup_root(server, fhandle, info->fattr, err);
Bryan Schumakerfb8a5ba2011-04-18 16:52:25 -04002839 switch (err) {
2840 case 0:
2841 case -NFS4ERR_WRONGSEC:
Trond Myklebust05e9cfb2012-03-27 18:13:02 -04002842 goto out;
Bryan Schumakerfb8a5ba2011-04-18 16:52:25 -04002843 default:
2844 err = nfs4_handle_exception(server, err, &exception);
2845 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002846 } while (exception.retry);
Trond Myklebust05e9cfb2012-03-27 18:13:02 -04002847out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07002848 return err;
2849}
2850
Bryan Schumaker8f70e952011-03-24 17:12:31 +00002851static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
2852 struct nfs_fsinfo *info, rpc_authflavor_t flavor)
2853{
Trond Myklebustc2190662013-08-26 19:23:04 -04002854 struct rpc_auth_create_args auth_args = {
2855 .pseudoflavor = flavor,
2856 };
Bryan Schumaker8f70e952011-03-24 17:12:31 +00002857 struct rpc_auth *auth;
2858 int ret;
2859
Trond Myklebustc2190662013-08-26 19:23:04 -04002860 auth = rpcauth_create(&auth_args, server->client);
Wei Yongjune8d920c2012-09-21 12:27:41 +08002861 if (IS_ERR(auth)) {
Chuck Lever75bc8822013-03-16 15:55:36 -04002862 ret = -EACCES;
Bryan Schumaker8f70e952011-03-24 17:12:31 +00002863 goto out;
2864 }
2865 ret = nfs4_lookup_root(server, fhandle, info);
Bryan Schumaker8f70e952011-03-24 17:12:31 +00002866out:
2867 return ret;
2868}
2869
Chuck Lever9a744ba2013-03-16 15:56:02 -04002870/*
2871 * Retry pseudoroot lookup with various security flavors. We do this when:
2872 *
2873 * NFSv4.0: the PUTROOTFH operation returns NFS4ERR_WRONGSEC
2874 * NFSv4.1: the server does not support the SECINFO_NO_NAME operation
2875 *
2876 * Returns zero on success, or a negative NFS4ERR value, or a
2877 * negative errno value.
2878 */
Bryan Schumaker801a16dc2011-04-13 14:31:30 -04002879static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
David Howells54ceac42006-08-22 20:06:13 -04002880 struct nfs_fsinfo *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002881{
Chuck Lever9a744ba2013-03-16 15:56:02 -04002882 /* Per 3530bis 15.33.5 */
2883 static const rpc_authflavor_t flav_array[] = {
2884 RPC_AUTH_GSS_KRB5P,
2885 RPC_AUTH_GSS_KRB5I,
2886 RPC_AUTH_GSS_KRB5,
Chuck Leverc4eafe12013-03-16 15:56:11 -04002887 RPC_AUTH_UNIX, /* courtesy */
Chuck Lever9a744ba2013-03-16 15:56:02 -04002888 RPC_AUTH_NULL,
2889 };
2890 int status = -EPERM;
2891 size_t i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002892
Weston Andros Adamson4d4b69d2013-10-18 15:15:19 -04002893 if (server->auth_info.flavor_len > 0) {
2894 /* try each flavor specified by user */
2895 for (i = 0; i < server->auth_info.flavor_len; i++) {
2896 status = nfs4_lookup_root_sec(server, fhandle, info,
2897 server->auth_info.flavors[i]);
2898 if (status == -NFS4ERR_WRONGSEC || status == -EACCES)
2899 continue;
2900 break;
2901 }
2902 } else {
2903 /* no flavors specified by user, try default list */
2904 for (i = 0; i < ARRAY_SIZE(flav_array); i++) {
2905 status = nfs4_lookup_root_sec(server, fhandle, info,
2906 flav_array[i]);
2907 if (status == -NFS4ERR_WRONGSEC || status == -EACCES)
2908 continue;
2909 break;
2910 }
Bryan Schumaker8f70e952011-03-24 17:12:31 +00002911 }
Chuck Lever9a744ba2013-03-16 15:56:02 -04002912
Bryan Schumakerfb8a5ba2011-04-18 16:52:25 -04002913 /*
2914 * -EACCESS could mean that the user doesn't have correct permissions
2915 * to access the mount. It could also mean that we tried to mount
2916 * with a gss auth flavor, but rpc.gssd isn't running. Either way,
2917 * existing mount programs don't handle -EACCES very well so it should
2918 * be mapped to -EPERM instead.
2919 */
2920 if (status == -EACCES)
2921 status = -EPERM;
Bryan Schumaker801a16dc2011-04-13 14:31:30 -04002922 return status;
2923}
2924
Chuck Lever2ed4b95b2013-03-16 15:55:45 -04002925static int nfs4_do_find_root_sec(struct nfs_server *server,
2926 struct nfs_fh *fhandle, struct nfs_fsinfo *info)
2927{
2928 int mv = server->nfs_client->cl_minorversion;
2929 return nfs_v4_minor_ops[mv]->find_root_sec(server, fhandle, info);
2930}
2931
2932/**
2933 * nfs4_proc_get_rootfh - get file handle for server's pseudoroot
2934 * @server: initialized nfs_server handle
2935 * @fhandle: we fill in the pseudo-fs root file handle
2936 * @info: we fill in an FSINFO struct
Trond Myklebust5e6b1992013-09-07 12:58:57 -04002937 * @auth_probe: probe the auth flavours
Chuck Lever2ed4b95b2013-03-16 15:55:45 -04002938 *
2939 * Returns zero on success, or a negative errno.
Bryan Schumaker801a16dc2011-04-13 14:31:30 -04002940 */
Bryan Schumaker3028eb22012-05-10 15:07:30 -04002941int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle,
Trond Myklebust5e6b1992013-09-07 12:58:57 -04002942 struct nfs_fsinfo *info,
2943 bool auth_probe)
Bryan Schumaker801a16dc2011-04-13 14:31:30 -04002944{
Chuck Lever2ed4b95b2013-03-16 15:55:45 -04002945 int status;
2946
Trond Myklebust5e6b1992013-09-07 12:58:57 -04002947 switch (auth_probe) {
2948 case false:
2949 status = nfs4_lookup_root(server, fhandle, info);
2950 if (status != -NFS4ERR_WRONGSEC)
2951 break;
Trond Myklebust5e6b1992013-09-07 12:58:57 -04002952 default:
Chuck Lever2ed4b95b2013-03-16 15:55:45 -04002953 status = nfs4_do_find_root_sec(server, fhandle, info);
Trond Myklebust5e6b1992013-09-07 12:58:57 -04002954 }
Chuck Lever2ed4b95b2013-03-16 15:55:45 -04002955
Linus Torvalds1da177e2005-04-16 15:20:36 -07002956 if (status == 0)
2957 status = nfs4_server_capabilities(server, fhandle);
2958 if (status == 0)
2959 status = nfs4_do_fsinfo(server, fhandle, info);
Chuck Lever2ed4b95b2013-03-16 15:55:45 -04002960
Trond Myklebustc12e87f2006-03-13 21:20:47 -08002961 return nfs4_map_errors(status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002962}
2963
Bryan Schumakerbae36242012-05-10 15:07:31 -04002964static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *mntfh,
2965 struct nfs_fsinfo *info)
2966{
2967 int error;
2968 struct nfs_fattr *fattr = info->fattr;
David Quigley1775fd32013-05-22 12:50:42 -04002969 struct nfs4_label *label = NULL;
Bryan Schumakerbae36242012-05-10 15:07:31 -04002970
2971 error = nfs4_server_capabilities(server, mntfh);
2972 if (error < 0) {
2973 dprintk("nfs4_get_root: getcaps error = %d\n", -error);
2974 return error;
2975 }
2976
David Quigley14c43f72013-05-22 12:50:43 -04002977 label = nfs4_label_alloc(server, GFP_KERNEL);
2978 if (IS_ERR(label))
2979 return PTR_ERR(label);
2980
David Quigley1775fd32013-05-22 12:50:42 -04002981 error = nfs4_proc_getattr(server, mntfh, fattr, label);
Bryan Schumakerbae36242012-05-10 15:07:31 -04002982 if (error < 0) {
2983 dprintk("nfs4_get_root: getattr error = %d\n", -error);
David Quigley14c43f72013-05-22 12:50:43 -04002984 goto err_free_label;
Bryan Schumakerbae36242012-05-10 15:07:31 -04002985 }
2986
2987 if (fattr->valid & NFS_ATTR_FATTR_FSID &&
2988 !nfs_fsid_equal(&server->fsid, &fattr->fsid))
2989 memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid));
2990
David Quigley14c43f72013-05-22 12:50:43 -04002991err_free_label:
2992 nfs4_label_free(label);
2993
Bryan Schumakerbae36242012-05-10 15:07:31 -04002994 return error;
2995}
2996
Manoj Naik6b97fd32006-06-09 09:34:29 -04002997/*
2998 * Get locations and (maybe) other attributes of a referral.
2999 * Note that we'll actually follow the referral later when
3000 * we detect fsid mismatch in inode revalidation
3001 */
Bryan Schumakerf05d1472012-04-27 13:27:41 -04003002static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir,
3003 const struct qstr *name, struct nfs_fattr *fattr,
3004 struct nfs_fh *fhandle)
Manoj Naik6b97fd32006-06-09 09:34:29 -04003005{
3006 int status = -ENOMEM;
3007 struct page *page = NULL;
3008 struct nfs4_fs_locations *locations = NULL;
Manoj Naik6b97fd32006-06-09 09:34:29 -04003009
3010 page = alloc_page(GFP_KERNEL);
3011 if (page == NULL)
3012 goto out;
3013 locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL);
3014 if (locations == NULL)
3015 goto out;
3016
Bryan Schumakerf05d1472012-04-27 13:27:41 -04003017 status = nfs4_proc_fs_locations(client, dir, name, locations, page);
Manoj Naik6b97fd32006-06-09 09:34:29 -04003018 if (status != 0)
3019 goto out;
Chuck Lever519ae252013-10-17 14:13:19 -04003020
3021 /*
3022 * If the fsid didn't change, this is a migration event, not a
3023 * referral. Cause us to drop into the exception handler, which
3024 * will kick off migration recovery.
3025 */
Manoj Naik6b97fd32006-06-09 09:34:29 -04003026 if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) {
Andy Adamson533eb462011-06-13 18:25:56 -04003027 dprintk("%s: server did not return a different fsid for"
3028 " a referral at %s\n", __func__, name->name);
Chuck Lever519ae252013-10-17 14:13:19 -04003029 status = -NFS4ERR_MOVED;
Manoj Naik6b97fd32006-06-09 09:34:29 -04003030 goto out;
3031 }
Andy Adamson533eb462011-06-13 18:25:56 -04003032 /* Fixup attributes for the nfs_lookup() call to nfs_fhget() */
3033 nfs_fixup_referral_attributes(&locations->fattr);
Manoj Naik6b97fd32006-06-09 09:34:29 -04003034
Andy Adamson533eb462011-06-13 18:25:56 -04003035 /* replace the lookup nfs_fattr with the locations nfs_fattr */
Manoj Naik6b97fd32006-06-09 09:34:29 -04003036 memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr));
Manoj Naik6b97fd32006-06-09 09:34:29 -04003037 memset(fhandle, 0, sizeof(struct nfs_fh));
3038out:
3039 if (page)
3040 __free_page(page);
Davidlohr Bueso5d7ca352010-08-11 12:42:15 -04003041 kfree(locations);
Manoj Naik6b97fd32006-06-09 09:34:29 -04003042 return status;
3043}
3044
David Quigley1775fd32013-05-22 12:50:42 -04003045static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
3046 struct nfs_fattr *fattr, struct nfs4_label *label)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003047{
3048 struct nfs4_getattr_arg args = {
3049 .fh = fhandle,
3050 .bitmask = server->attr_bitmask,
3051 };
3052 struct nfs4_getattr_res res = {
3053 .fattr = fattr,
David Quigley1775fd32013-05-22 12:50:42 -04003054 .label = label,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003055 .server = server,
3056 };
3057 struct rpc_message msg = {
3058 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
3059 .rpc_argp = &args,
3060 .rpc_resp = &res,
3061 };
David Quigleyaa9c2662013-05-22 12:50:44 -04003062
3063 args.bitmask = nfs4_bitmask(server, label);
3064
Trond Myklebust0e574af2005-10-27 22:12:38 -04003065 nfs_fattr_init(fattr);
Bryan Schumaker7c513052011-03-24 17:12:24 +00003066 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003067}
3068
David Quigley1775fd32013-05-22 12:50:42 -04003069static int nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
3070 struct nfs_fattr *fattr, struct nfs4_label *label)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003071{
3072 struct nfs4_exception exception = { };
3073 int err;
3074 do {
Trond Myklebustb5f875a2013-08-13 13:01:39 -04003075 err = _nfs4_proc_getattr(server, fhandle, fattr, label);
3076 trace_nfs4_getattr(server, fhandle, fattr, err);
3077 err = nfs4_handle_exception(server, err,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003078 &exception);
3079 } while (exception.retry);
3080 return err;
3081}
3082
3083/*
3084 * The file is not closed if it is opened due to the a request to change
3085 * the size of the file. The open call will not be needed once the
3086 * VFS layer lookup-intents are implemented.
3087 *
3088 * Close is called when the inode is destroyed.
3089 * If we haven't opened the file for O_WRONLY, we
3090 * need to in the size_change case to obtain a stateid.
3091 *
3092 * Got race?
3093 * Because OPEN is always done by name in nfsv4, it is
3094 * possible that we opened a different file by the same
3095 * name. We can recognize this race condition, but we
3096 * can't do anything about it besides returning an error.
3097 *
3098 * This will be fixed with VFS changes (lookup-intent).
3099 */
3100static int
3101nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
3102 struct iattr *sattr)
3103{
Trond Myklebust08e9eac2005-06-22 17:16:29 +00003104 struct inode *inode = dentry->d_inode;
Trond Myklebust659bfcd2008-06-10 19:39:41 -04003105 struct rpc_cred *cred = NULL;
Trond Myklebustd5308382005-11-04 15:33:38 -05003106 struct nfs4_state *state = NULL;
David Quigley14c43f72013-05-22 12:50:43 -04003107 struct nfs4_label *label = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003108 int status;
3109
Benny Halevy8a1636c2010-07-14 15:43:57 -04003110 if (pnfs_ld_layoutret_on_setattr(inode))
Trond Myklebust24028672013-03-20 13:23:33 -04003111 pnfs_commit_and_return_layout(inode);
Benny Halevy8a1636c2010-07-14 15:43:57 -04003112
Trond Myklebust0e574af2005-10-27 22:12:38 -04003113 nfs_fattr_init(fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003114
Andy Adamson26699402012-05-30 16:12:24 -04003115 /* Deal with open(O_TRUNC) */
3116 if (sattr->ia_valid & ATTR_OPEN)
Nadav Shemercc7936f2013-07-21 17:21:43 +03003117 sattr->ia_valid &= ~(ATTR_MTIME|ATTR_CTIME);
Andy Adamson26699402012-05-30 16:12:24 -04003118
3119 /* Optimization: if the end result is no change, don't RPC */
Nadav Shemercc7936f2013-07-21 17:21:43 +03003120 if ((sattr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0)
Andy Adamson26699402012-05-30 16:12:24 -04003121 return 0;
3122
Trond Myklebustd5308382005-11-04 15:33:38 -05003123 /* Search for an existing open(O_WRITE) file */
Trond Myklebust659bfcd2008-06-10 19:39:41 -04003124 if (sattr->ia_valid & ATTR_FILE) {
3125 struct nfs_open_context *ctx;
Trond Myklebust08e9eac2005-06-22 17:16:29 +00003126
Trond Myklebust659bfcd2008-06-10 19:39:41 -04003127 ctx = nfs_file_open_context(sattr->ia_file);
Neil Brown504e5182008-10-16 14:15:16 +11003128 if (ctx) {
3129 cred = ctx->cred;
3130 state = ctx->state;
3131 }
Trond Myklebust659bfcd2008-06-10 19:39:41 -04003132 }
3133
David Quigley14c43f72013-05-22 12:50:43 -04003134 label = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL);
3135 if (IS_ERR(label))
3136 return PTR_ERR(label);
3137
3138 status = nfs4_do_setattr(inode, cred, fattr, sattr, state, NULL, label);
David Quigleyaa9c2662013-05-22 12:50:44 -04003139 if (status == 0) {
Trond Myklebust65e43082005-08-16 11:49:44 -04003140 nfs_setattr_update_inode(inode, sattr);
David Quigleyaa9c2662013-05-22 12:50:44 -04003141 nfs_setsecurity(inode, fattr, label);
3142 }
David Quigley14c43f72013-05-22 12:50:43 -04003143 nfs4_label_free(label);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003144 return status;
3145}
3146
Trond Myklebust0c2e53f2011-10-18 16:11:22 -07003147static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir,
3148 const struct qstr *name, struct nfs_fh *fhandle,
David Quigley1775fd32013-05-22 12:50:42 -04003149 struct nfs_fattr *fattr, struct nfs4_label *label)
David Howells2b3de442006-08-22 20:06:09 -04003150{
Trond Myklebust0c2e53f2011-10-18 16:11:22 -07003151 struct nfs_server *server = NFS_SERVER(dir);
David Howells2b3de442006-08-22 20:06:09 -04003152 int status;
3153 struct nfs4_lookup_arg args = {
3154 .bitmask = server->attr_bitmask,
Trond Myklebust0c2e53f2011-10-18 16:11:22 -07003155 .dir_fh = NFS_FH(dir),
David Howells2b3de442006-08-22 20:06:09 -04003156 .name = name,
3157 };
3158 struct nfs4_lookup_res res = {
3159 .server = server,
3160 .fattr = fattr,
David Quigleyaa9c2662013-05-22 12:50:44 -04003161 .label = label,
David Howells2b3de442006-08-22 20:06:09 -04003162 .fh = fhandle,
3163 };
3164 struct rpc_message msg = {
3165 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP],
3166 .rpc_argp = &args,
3167 .rpc_resp = &res,
3168 };
3169
David Quigleyaa9c2662013-05-22 12:50:44 -04003170 args.bitmask = nfs4_bitmask(server, label);
3171
David Howells2b3de442006-08-22 20:06:09 -04003172 nfs_fattr_init(fattr);
3173
Linus Torvalds1da177e2005-04-16 15:20:36 -07003174 dprintk("NFS call lookup %s\n", name->name);
Trond Myklebust0c2e53f2011-10-18 16:11:22 -07003175 status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, &res.seq_res, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003176 dprintk("NFS reply lookup: %d\n", status);
3177 return status;
3178}
3179
Bryan Schumaker72de53e2012-04-27 13:27:40 -04003180static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr)
Bryan Schumaker7ebb9312011-03-24 17:12:30 +00003181{
Bryan Schumaker7ebb9312011-03-24 17:12:30 +00003182 fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
Bryan Schumaker72de53e2012-04-27 13:27:40 -04003183 NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT;
Bryan Schumaker7ebb9312011-03-24 17:12:30 +00003184 fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
3185 fattr->nlink = 2;
3186}
3187
Bryan Schumaker72de53e2012-04-27 13:27:40 -04003188static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir,
3189 struct qstr *name, struct nfs_fh *fhandle,
David Quigley1775fd32013-05-22 12:50:42 -04003190 struct nfs_fattr *fattr, struct nfs4_label *label)
Bryan Schumaker72de53e2012-04-27 13:27:40 -04003191{
3192 struct nfs4_exception exception = { };
3193 struct rpc_clnt *client = *clnt;
3194 int err;
3195 do {
David Quigley1775fd32013-05-22 12:50:42 -04003196 err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr, label);
Trond Myklebust078ea3d2013-08-12 16:45:55 -04003197 trace_nfs4_lookup(dir, name, err);
Bryan Schumaker72de53e2012-04-27 13:27:40 -04003198 switch (err) {
3199 case -NFS4ERR_BADNAME:
3200 err = -ENOENT;
3201 goto out;
3202 case -NFS4ERR_MOVED:
Bryan Schumakerf05d1472012-04-27 13:27:41 -04003203 err = nfs4_get_referral(client, dir, name, fattr, fhandle);
Bryan Schumaker72de53e2012-04-27 13:27:40 -04003204 goto out;
3205 case -NFS4ERR_WRONGSEC:
3206 err = -EPERM;
3207 if (client != *clnt)
3208 goto out;
Bryan Schumaker72de53e2012-04-27 13:27:40 -04003209 client = nfs4_create_sec_client(client, dir, name);
3210 if (IS_ERR(client))
3211 return PTR_ERR(client);
3212
3213 exception.retry = 1;
3214 break;
3215 default:
3216 err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception);
3217 }
3218 } while (exception.retry);
3219
3220out:
3221 if (err == 0)
3222 *clnt = client;
3223 else if (client != *clnt)
3224 rpc_shutdown_client(client);
3225
3226 return err;
3227}
3228
Bryan Schumaker80a16b22012-04-27 13:27:46 -04003229static int nfs4_proc_lookup(struct inode *dir, struct qstr *name,
David Quigley1775fd32013-05-22 12:50:42 -04003230 struct nfs_fh *fhandle, struct nfs_fattr *fattr,
3231 struct nfs4_label *label)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003232{
Bryan Schumaker72de53e2012-04-27 13:27:40 -04003233 int status;
3234 struct rpc_clnt *client = NFS_CLIENT(dir);
Trond Myklebust0c2e53f2011-10-18 16:11:22 -07003235
David Quigley1775fd32013-05-22 12:50:42 -04003236 status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, label);
Bryan Schumaker72de53e2012-04-27 13:27:40 -04003237 if (client != NFS_CLIENT(dir)) {
3238 rpc_shutdown_client(client);
3239 nfs_fixup_secinfo_attributes(fattr);
3240 }
3241 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003242}
3243
Bryan Schumakerf05d1472012-04-27 13:27:41 -04003244struct rpc_clnt *
3245nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name,
3246 struct nfs_fh *fhandle, struct nfs_fattr *fattr)
3247{
Trond Myklebustb72888c2013-08-07 20:38:07 -04003248 struct rpc_clnt *client = NFS_CLIENT(dir);
Bryan Schumakerf05d1472012-04-27 13:27:41 -04003249 int status;
Bryan Schumakerf05d1472012-04-27 13:27:41 -04003250
David Quigley1775fd32013-05-22 12:50:42 -04003251 status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr, NULL);
Trond Myklebustb72888c2013-08-07 20:38:07 -04003252 if (status < 0)
Bryan Schumakerf05d1472012-04-27 13:27:41 -04003253 return ERR_PTR(status);
Trond Myklebustb72888c2013-08-07 20:38:07 -04003254 return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client;
Bryan Schumakerf05d1472012-04-27 13:27:41 -04003255}
3256
Linus Torvalds1da177e2005-04-16 15:20:36 -07003257static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
3258{
Trond Myklebust76b32992007-08-10 17:45:11 -04003259 struct nfs_server *server = NFS_SERVER(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003260 struct nfs4_accessargs args = {
3261 .fh = NFS_FH(inode),
Trond Myklebusta4980e72012-01-30 15:43:56 -05003262 .bitmask = server->cache_consistency_bitmask,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003263 };
Trond Myklebust76b32992007-08-10 17:45:11 -04003264 struct nfs4_accessres res = {
3265 .server = server,
Trond Myklebust76b32992007-08-10 17:45:11 -04003266 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07003267 struct rpc_message msg = {
3268 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ACCESS],
3269 .rpc_argp = &args,
3270 .rpc_resp = &res,
3271 .rpc_cred = entry->cred,
3272 };
3273 int mode = entry->mask;
David Quigleyaa9c2662013-05-22 12:50:44 -04003274 int status = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003275
3276 /*
3277 * Determine which access bits we want to ask for...
3278 */
3279 if (mode & MAY_READ)
3280 args.access |= NFS4_ACCESS_READ;
3281 if (S_ISDIR(inode->i_mode)) {
3282 if (mode & MAY_WRITE)
3283 args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND | NFS4_ACCESS_DELETE;
3284 if (mode & MAY_EXEC)
3285 args.access |= NFS4_ACCESS_LOOKUP;
3286 } else {
3287 if (mode & MAY_WRITE)
3288 args.access |= NFS4_ACCESS_MODIFY | NFS4_ACCESS_EXTEND;
3289 if (mode & MAY_EXEC)
3290 args.access |= NFS4_ACCESS_EXECUTE;
3291 }
Trond Myklebustc407d412010-04-16 16:22:48 -04003292
3293 res.fattr = nfs_alloc_fattr();
3294 if (res.fattr == NULL)
3295 return -ENOMEM;
3296
Bryan Schumaker7c513052011-03-24 17:12:24 +00003297 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003298 if (!status) {
Weston Andros Adamson6168f622012-09-10 14:00:46 -04003299 nfs_access_set_mask(entry, res.access);
Trond Myklebustc407d412010-04-16 16:22:48 -04003300 nfs_refresh_inode(inode, res.fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003301 }
Trond Myklebustc407d412010-04-16 16:22:48 -04003302 nfs_free_fattr(res.fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003303 return status;
3304}
3305
3306static int nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
3307{
3308 struct nfs4_exception exception = { };
3309 int err;
3310 do {
Trond Myklebustc1578b72013-08-12 16:58:42 -04003311 err = _nfs4_proc_access(inode, entry);
3312 trace_nfs4_access(inode, err);
3313 err = nfs4_handle_exception(NFS_SERVER(inode), err,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003314 &exception);
3315 } while (exception.retry);
3316 return err;
3317}
3318
3319/*
3320 * TODO: For the time being, we don't try to get any attributes
3321 * along with any of the zero-copy operations READ, READDIR,
3322 * READLINK, WRITE.
3323 *
3324 * In the case of the first three, we want to put the GETATTR
3325 * after the read-type operation -- this is because it is hard
3326 * to predict the length of a GETATTR response in v4, and thus
3327 * align the READ data correctly. This means that the GETATTR
3328 * may end up partially falling into the page cache, and we should
3329 * shift it into the 'tail' of the xdr_buf before processing.
3330 * To do this efficiently, we need to know the total length
3331 * of data received, which doesn't seem to be available outside
3332 * of the RPC layer.
3333 *
3334 * In the case of WRITE, we also want to put the GETATTR after
3335 * the operation -- in this case because we want to make sure
Trond Myklebust140150d2012-06-05 15:20:25 -04003336 * we get the post-operation mtime and size.
Linus Torvalds1da177e2005-04-16 15:20:36 -07003337 *
3338 * Both of these changes to the XDR layer would in fact be quite
3339 * minor, but I decided to leave them for a subsequent patch.
3340 */
3341static int _nfs4_proc_readlink(struct inode *inode, struct page *page,
3342 unsigned int pgbase, unsigned int pglen)
3343{
3344 struct nfs4_readlink args = {
3345 .fh = NFS_FH(inode),
3346 .pgbase = pgbase,
3347 .pglen = pglen,
3348 .pages = &page,
3349 };
Benny Halevyf50c7002009-04-01 09:21:55 -04003350 struct nfs4_readlink_res res;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003351 struct rpc_message msg = {
3352 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READLINK],
3353 .rpc_argp = &args,
Benny Halevyf50c7002009-04-01 09:21:55 -04003354 .rpc_resp = &res,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003355 };
3356
Bryan Schumaker7c513052011-03-24 17:12:24 +00003357 return nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode), &msg, &args.seq_args, &res.seq_res, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003358}
3359
3360static int nfs4_proc_readlink(struct inode *inode, struct page *page,
3361 unsigned int pgbase, unsigned int pglen)
3362{
3363 struct nfs4_exception exception = { };
3364 int err;
3365 do {
Trond Myklebustc1578b72013-08-12 16:58:42 -04003366 err = _nfs4_proc_readlink(inode, page, pgbase, pglen);
3367 trace_nfs4_readlink(inode, err);
3368 err = nfs4_handle_exception(NFS_SERVER(inode), err,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003369 &exception);
3370 } while (exception.retry);
3371 return err;
3372}
3373
Linus Torvalds1da177e2005-04-16 15:20:36 -07003374/*
Miklos Szeredi8867fe52012-06-05 15:10:19 +02003375 * This is just for mknod. open(O_CREAT) will always do ->open_context().
Linus Torvalds1da177e2005-04-16 15:20:36 -07003376 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07003377static int
3378nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
Miklos Szeredi8867fe52012-06-05 15:10:19 +02003379 int flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003380{
David Quigleyaa9c2662013-05-22 12:50:44 -04003381 struct nfs4_label l, *ilabel = NULL;
Miklos Szeredi8867fe52012-06-05 15:10:19 +02003382 struct nfs_open_context *ctx;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003383 struct nfs4_state *state;
Trond Myklebust5bc2afc2013-09-23 18:01:28 -04003384 int opened = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003385 int status = 0;
3386
Miklos Szeredi8867fe52012-06-05 15:10:19 +02003387 ctx = alloc_nfs_open_context(dentry, FMODE_READ);
3388 if (IS_ERR(ctx))
3389 return PTR_ERR(ctx);
3390
David Quigleyaa9c2662013-05-22 12:50:44 -04003391 ilabel = nfs4_label_init_security(dir, dentry, sattr, &l);
3392
Aneesh Kumar K.Va8a5da92010-12-09 11:35:14 +00003393 sattr->ia_mode &= ~current_umask();
Trond Myklebust5bc2afc2013-09-23 18:01:28 -04003394 state = nfs4_do_open(dir, ctx, flags, sattr, ilabel, &opened);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003395 if (IS_ERR(state)) {
3396 status = PTR_ERR(state);
Trond Myklebustc0204fd2010-09-17 10:56:51 -04003397 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003398 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003399out:
David Quigleyaa9c2662013-05-22 12:50:44 -04003400 nfs4_label_release_security(ilabel);
Miklos Szeredi8867fe52012-06-05 15:10:19 +02003401 put_nfs_open_context(ctx);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003402 return status;
3403}
3404
3405static int _nfs4_proc_remove(struct inode *dir, struct qstr *name)
3406{
Trond Myklebust16e42952005-10-27 22:12:44 -04003407 struct nfs_server *server = NFS_SERVER(dir);
Trond Myklebust4fdc17b2007-07-14 15:39:57 -04003408 struct nfs_removeargs args = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003409 .fh = NFS_FH(dir),
Linus Torvalds26fe5752012-05-10 13:14:12 -07003410 .name = *name,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003411 };
Trond Myklebust4fdc17b2007-07-14 15:39:57 -04003412 struct nfs_removeres res = {
Trond Myklebust16e42952005-10-27 22:12:44 -04003413 .server = server,
Trond Myklebust16e42952005-10-27 22:12:44 -04003414 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07003415 struct rpc_message msg = {
Trond Myklebust4fdc17b2007-07-14 15:39:57 -04003416 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE],
3417 .rpc_argp = &args,
3418 .rpc_resp = &res,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003419 };
Trond Myklebust778d2812012-04-27 13:48:19 -04003420 int status;
Trond Myklebustd3468902010-04-16 16:22:50 -04003421
Bryan Schumaker7c513052011-03-24 17:12:24 +00003422 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1);
Trond Myklebust778d2812012-04-27 13:48:19 -04003423 if (status == 0)
Trond Myklebust16e42952005-10-27 22:12:44 -04003424 update_changeattr(dir, &res.cinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003425 return status;
3426}
3427
3428static int nfs4_proc_remove(struct inode *dir, struct qstr *name)
3429{
3430 struct nfs4_exception exception = { };
3431 int err;
3432 do {
Trond Myklebust078ea3d2013-08-12 16:45:55 -04003433 err = _nfs4_proc_remove(dir, name);
3434 trace_nfs4_remove(dir, name, err);
3435 err = nfs4_handle_exception(NFS_SERVER(dir), err,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003436 &exception);
3437 } while (exception.retry);
3438 return err;
3439}
3440
Trond Myklebuste4eff1a2007-07-14 15:39:58 -04003441static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003442{
Trond Myklebuste4eff1a2007-07-14 15:39:58 -04003443 struct nfs_server *server = NFS_SERVER(dir);
3444 struct nfs_removeargs *args = msg->rpc_argp;
3445 struct nfs_removeres *res = msg->rpc_resp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003446
Trond Myklebuste4eff1a2007-07-14 15:39:58 -04003447 res->server = server;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003448 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE];
Chuck Levera9c92d62013-08-09 12:48:18 -04003449 nfs4_init_sequence(&args->seq_args, &res->seq_res, 1);
David Quigleyaa9c2662013-05-22 12:50:44 -04003450
3451 nfs_fattr_init(res->dir_attr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003452}
3453
Bryan Schumaker34e137c2012-03-19 14:54:41 -04003454static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data)
3455{
Trond Myklebustd9afbd12012-10-22 20:28:44 -04003456 nfs4_setup_sequence(NFS_SERVER(data->dir),
3457 &data->args.seq_args,
3458 &data->res.seq_res,
3459 task);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003460}
3461
Trond Myklebuste4eff1a2007-07-14 15:39:58 -04003462static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003463{
Trond Myklebust078ea3d2013-08-12 16:45:55 -04003464 struct nfs_unlinkdata *data = task->tk_calldata;
3465 struct nfs_removeres *res = &data->res;
Trond Myklebuste4eff1a2007-07-14 15:39:58 -04003466
Trond Myklebust14516c32010-07-31 14:29:06 -04003467 if (!nfs4_sequence_done(task, &res->seq_res))
3468 return 0;
Trond Myklebust9e33bed2008-12-23 15:21:46 -05003469 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
Trond Myklebuste4eff1a2007-07-14 15:39:58 -04003470 return 0;
3471 update_changeattr(dir, &res->cinfo);
Trond Myklebuste4eff1a2007-07-14 15:39:58 -04003472 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003473}
3474
Jeff Laytond3d41522010-09-17 17:31:57 -04003475static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir)
3476{
3477 struct nfs_server *server = NFS_SERVER(dir);
3478 struct nfs_renameargs *arg = msg->rpc_argp;
3479 struct nfs_renameres *res = msg->rpc_resp;
3480
3481 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME];
Jeff Laytond3d41522010-09-17 17:31:57 -04003482 res->server = server;
Chuck Levera9c92d62013-08-09 12:48:18 -04003483 nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1);
Jeff Laytond3d41522010-09-17 17:31:57 -04003484}
3485
Bryan Schumakerc6bfa1a2012-03-19 14:54:42 -04003486static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data)
3487{
Trond Myklebustd9afbd12012-10-22 20:28:44 -04003488 nfs4_setup_sequence(NFS_SERVER(data->old_dir),
3489 &data->args.seq_args,
3490 &data->res.seq_res,
3491 task);
Jeff Laytond3d41522010-09-17 17:31:57 -04003492}
3493
3494static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
3495 struct inode *new_dir)
3496{
Trond Myklebustfbc6f7c2013-08-12 17:08:26 -04003497 struct nfs_renamedata *data = task->tk_calldata;
3498 struct nfs_renameres *res = &data->res;
Jeff Laytond3d41522010-09-17 17:31:57 -04003499
3500 if (!nfs4_sequence_done(task, &res->seq_res))
3501 return 0;
3502 if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN)
3503 return 0;
3504
3505 update_changeattr(old_dir, &res->old_cinfo);
Jeff Laytond3d41522010-09-17 17:31:57 -04003506 update_changeattr(new_dir, &res->new_cinfo);
Jeff Laytond3d41522010-09-17 17:31:57 -04003507 return 1;
3508}
3509
Linus Torvalds1da177e2005-04-16 15:20:36 -07003510static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
3511 struct inode *new_dir, struct qstr *new_name)
3512{
Trond Myklebust6caf2c82005-10-27 22:12:43 -04003513 struct nfs_server *server = NFS_SERVER(old_dir);
Jeff Layton920769f2010-09-17 17:30:25 -04003514 struct nfs_renameargs arg = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003515 .old_dir = NFS_FH(old_dir),
3516 .new_dir = NFS_FH(new_dir),
3517 .old_name = old_name,
3518 .new_name = new_name,
3519 };
Jeff Laytone8582a82010-09-17 17:31:06 -04003520 struct nfs_renameres res = {
Trond Myklebust6caf2c82005-10-27 22:12:43 -04003521 .server = server,
Trond Myklebust6caf2c82005-10-27 22:12:43 -04003522 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07003523 struct rpc_message msg = {
3524 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME],
3525 .rpc_argp = &arg,
3526 .rpc_resp = &res,
3527 };
Trond Myklebust011fff72010-04-16 16:22:49 -04003528 int status = -ENOMEM;
David Quigley14c43f72013-05-22 12:50:43 -04003529
Bryan Schumaker7c513052011-03-24 17:12:24 +00003530 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003531 if (!status) {
3532 update_changeattr(old_dir, &res.old_cinfo);
3533 update_changeattr(new_dir, &res.new_cinfo);
3534 }
3535 return status;
3536}
3537
3538static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
3539 struct inode *new_dir, struct qstr *new_name)
3540{
3541 struct nfs4_exception exception = { };
3542 int err;
3543 do {
Trond Myklebustfbc6f7c2013-08-12 17:08:26 -04003544 err = _nfs4_proc_rename(old_dir, old_name,
3545 new_dir, new_name);
3546 trace_nfs4_rename(old_dir, old_name, new_dir, new_name, err);
3547 err = nfs4_handle_exception(NFS_SERVER(old_dir), err,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003548 &exception);
3549 } while (exception.retry);
3550 return err;
3551}
3552
3553static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
3554{
Trond Myklebust91ba2ee2005-10-27 22:12:42 -04003555 struct nfs_server *server = NFS_SERVER(inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003556 struct nfs4_link_arg arg = {
3557 .fh = NFS_FH(inode),
3558 .dir_fh = NFS_FH(dir),
3559 .name = name,
Trond Myklebust91ba2ee2005-10-27 22:12:42 -04003560 .bitmask = server->attr_bitmask,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003561 };
Trond Myklebust91ba2ee2005-10-27 22:12:42 -04003562 struct nfs4_link_res res = {
3563 .server = server,
David Quigley1775fd32013-05-22 12:50:42 -04003564 .label = NULL,
Trond Myklebust91ba2ee2005-10-27 22:12:42 -04003565 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07003566 struct rpc_message msg = {
3567 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK],
3568 .rpc_argp = &arg,
Trond Myklebust91ba2ee2005-10-27 22:12:42 -04003569 .rpc_resp = &res,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003570 };
Trond Myklebust136f2622010-04-16 16:22:49 -04003571 int status = -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003572
Trond Myklebust136f2622010-04-16 16:22:49 -04003573 res.fattr = nfs_alloc_fattr();
Trond Myklebust778d2812012-04-27 13:48:19 -04003574 if (res.fattr == NULL)
Trond Myklebust136f2622010-04-16 16:22:49 -04003575 goto out;
3576
David Quigley14c43f72013-05-22 12:50:43 -04003577 res.label = nfs4_label_alloc(server, GFP_KERNEL);
3578 if (IS_ERR(res.label)) {
3579 status = PTR_ERR(res.label);
3580 goto out;
3581 }
David Quigleyaa9c2662013-05-22 12:50:44 -04003582 arg.bitmask = nfs4_bitmask(server, res.label);
David Quigley14c43f72013-05-22 12:50:43 -04003583
Bryan Schumaker7c513052011-03-24 17:12:24 +00003584 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
Trond Myklebust91ba2ee2005-10-27 22:12:42 -04003585 if (!status) {
3586 update_changeattr(dir, &res.cinfo);
David Quigleyaa9c2662013-05-22 12:50:44 -04003587 status = nfs_post_op_update_inode(inode, res.fattr);
3588 if (!status)
3589 nfs_setsecurity(inode, res.fattr, res.label);
Trond Myklebust91ba2ee2005-10-27 22:12:42 -04003590 }
David Quigley14c43f72013-05-22 12:50:43 -04003591
3592
3593 nfs4_label_free(res.label);
3594
Trond Myklebust136f2622010-04-16 16:22:49 -04003595out:
Trond Myklebust136f2622010-04-16 16:22:49 -04003596 nfs_free_fattr(res.fattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003597 return status;
3598}
3599
3600static int nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
3601{
3602 struct nfs4_exception exception = { };
3603 int err;
3604 do {
3605 err = nfs4_handle_exception(NFS_SERVER(inode),
3606 _nfs4_proc_link(inode, dir, name),
3607 &exception);
3608 } while (exception.retry);
3609 return err;
3610}
3611
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003612struct nfs4_createdata {
3613 struct rpc_message msg;
3614 struct nfs4_create_arg arg;
3615 struct nfs4_create_res res;
3616 struct nfs_fh fh;
3617 struct nfs_fattr fattr;
David Quigley1775fd32013-05-22 12:50:42 -04003618 struct nfs4_label *label;
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003619};
3620
3621static struct nfs4_createdata *nfs4_alloc_createdata(struct inode *dir,
3622 struct qstr *name, struct iattr *sattr, u32 ftype)
3623{
3624 struct nfs4_createdata *data;
3625
3626 data = kzalloc(sizeof(*data), GFP_KERNEL);
3627 if (data != NULL) {
3628 struct nfs_server *server = NFS_SERVER(dir);
3629
David Quigley14c43f72013-05-22 12:50:43 -04003630 data->label = nfs4_label_alloc(server, GFP_KERNEL);
3631 if (IS_ERR(data->label))
3632 goto out_free;
3633
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003634 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE];
3635 data->msg.rpc_argp = &data->arg;
3636 data->msg.rpc_resp = &data->res;
3637 data->arg.dir_fh = NFS_FH(dir);
3638 data->arg.server = server;
3639 data->arg.name = name;
3640 data->arg.attrs = sattr;
3641 data->arg.ftype = ftype;
David Quigleyaa9c2662013-05-22 12:50:44 -04003642 data->arg.bitmask = nfs4_bitmask(server, data->label);
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003643 data->res.server = server;
3644 data->res.fh = &data->fh;
3645 data->res.fattr = &data->fattr;
David Quigley1775fd32013-05-22 12:50:42 -04003646 data->res.label = data->label;
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003647 nfs_fattr_init(data->res.fattr);
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003648 }
3649 return data;
David Quigley14c43f72013-05-22 12:50:43 -04003650out_free:
3651 kfree(data);
3652 return NULL;
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003653}
3654
3655static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_createdata *data)
3656{
Bryan Schumaker7c513052011-03-24 17:12:24 +00003657 int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg,
Bryan Schumakere73b83f2011-03-24 17:12:23 +00003658 &data->arg.seq_args, &data->res.seq_res, 1);
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003659 if (status == 0) {
3660 update_changeattr(dir, &data->res.dir_cinfo);
David Quigley1775fd32013-05-22 12:50:42 -04003661 status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label);
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003662 }
3663 return status;
3664}
3665
3666static void nfs4_free_createdata(struct nfs4_createdata *data)
3667{
David Quigley14c43f72013-05-22 12:50:43 -04003668 nfs4_label_free(data->label);
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003669 kfree(data);
3670}
3671
Chuck Lever4f390c12006-08-22 20:06:22 -04003672static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
David Quigley1775fd32013-05-22 12:50:42 -04003673 struct page *page, unsigned int len, struct iattr *sattr,
3674 struct nfs4_label *label)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003675{
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003676 struct nfs4_createdata *data;
3677 int status = -ENAMETOOLONG;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003678
Chuck Lever94a6d752006-08-22 20:06:23 -04003679 if (len > NFS4_MAXPATHLEN)
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003680 goto out;
Chuck Lever4f390c12006-08-22 20:06:22 -04003681
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003682 status = -ENOMEM;
3683 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4LNK);
3684 if (data == NULL)
3685 goto out;
3686
3687 data->msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK];
3688 data->arg.u.symlink.pages = &page;
3689 data->arg.u.symlink.len = len;
David Quigley1775fd32013-05-22 12:50:42 -04003690 data->arg.label = label;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003691
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003692 status = nfs4_do_create(dir, dentry, data);
3693
3694 nfs4_free_createdata(data);
3695out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07003696 return status;
3697}
3698
Chuck Lever4f390c12006-08-22 20:06:22 -04003699static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
Chuck Lever94a6d752006-08-22 20:06:23 -04003700 struct page *page, unsigned int len, struct iattr *sattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003701{
3702 struct nfs4_exception exception = { };
David Quigleyaa9c2662013-05-22 12:50:44 -04003703 struct nfs4_label l, *label = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003704 int err;
David Quigleyaa9c2662013-05-22 12:50:44 -04003705
3706 label = nfs4_label_init_security(dir, dentry, sattr, &l);
3707
Linus Torvalds1da177e2005-04-16 15:20:36 -07003708 do {
Trond Myklebust078ea3d2013-08-12 16:45:55 -04003709 err = _nfs4_proc_symlink(dir, dentry, page, len, sattr, label);
3710 trace_nfs4_symlink(dir, &dentry->d_name, err);
3711 err = nfs4_handle_exception(NFS_SERVER(dir), err,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003712 &exception);
3713 } while (exception.retry);
David Quigleyaa9c2662013-05-22 12:50:44 -04003714
3715 nfs4_label_release_security(label);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003716 return err;
3717}
3718
3719static int _nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
David Quigley1775fd32013-05-22 12:50:42 -04003720 struct iattr *sattr, struct nfs4_label *label)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003721{
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003722 struct nfs4_createdata *data;
3723 int status = -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003724
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003725 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4DIR);
3726 if (data == NULL)
3727 goto out;
3728
David Quigley1775fd32013-05-22 12:50:42 -04003729 data->arg.label = label;
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003730 status = nfs4_do_create(dir, dentry, data);
3731
3732 nfs4_free_createdata(data);
3733out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07003734 return status;
3735}
3736
3737static int nfs4_proc_mkdir(struct inode *dir, struct dentry *dentry,
3738 struct iattr *sattr)
3739{
3740 struct nfs4_exception exception = { };
David Quigleyaa9c2662013-05-22 12:50:44 -04003741 struct nfs4_label l, *label = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003742 int err;
Aneesh Kumar K.Va8a5da92010-12-09 11:35:14 +00003743
David Quigleyaa9c2662013-05-22 12:50:44 -04003744 label = nfs4_label_init_security(dir, dentry, sattr, &l);
3745
Aneesh Kumar K.Va8a5da92010-12-09 11:35:14 +00003746 sattr->ia_mode &= ~current_umask();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003747 do {
Trond Myklebust078ea3d2013-08-12 16:45:55 -04003748 err = _nfs4_proc_mkdir(dir, dentry, sattr, label);
3749 trace_nfs4_mkdir(dir, &dentry->d_name, err);
3750 err = nfs4_handle_exception(NFS_SERVER(dir), err,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003751 &exception);
3752 } while (exception.retry);
David Quigleyaa9c2662013-05-22 12:50:44 -04003753 nfs4_label_release_security(label);
3754
Linus Torvalds1da177e2005-04-16 15:20:36 -07003755 return err;
3756}
3757
3758static int _nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
Bryan Schumaker56e4ebf2010-10-20 15:44:37 -04003759 u64 cookie, struct page **pages, unsigned int count, int plus)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003760{
3761 struct inode *dir = dentry->d_inode;
3762 struct nfs4_readdir_arg args = {
3763 .fh = NFS_FH(dir),
Bryan Schumaker56e4ebf2010-10-20 15:44:37 -04003764 .pages = pages,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003765 .pgbase = 0,
3766 .count = count,
Trond Myklebust96d25e52009-11-11 16:15:42 +09003767 .bitmask = NFS_SERVER(dentry->d_inode)->attr_bitmask,
Bryan Schumaker82f2e542010-10-21 16:33:18 -04003768 .plus = plus,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003769 };
3770 struct nfs4_readdir_res res;
3771 struct rpc_message msg = {
3772 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READDIR],
3773 .rpc_argp = &args,
3774 .rpc_resp = &res,
3775 .rpc_cred = cred,
3776 };
3777 int status;
3778
Al Viro6de14722013-09-16 10:53:17 -04003779 dprintk("%s: dentry = %pd2, cookie = %Lu\n", __func__,
3780 dentry,
Trond Myklebusteadf4592005-06-22 17:16:39 +00003781 (unsigned long long)cookie);
Trond Myklebustc3f52af2012-09-03 14:56:02 -04003782 nfs4_setup_readdir(cookie, NFS_I(dir)->cookieverf, dentry, &args);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003783 res.pgbase = args.pgbase;
Bryan Schumaker7c513052011-03-24 17:12:24 +00003784 status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &msg, &args.seq_args, &res.seq_res, 0);
Trond Myklebustac396122010-11-15 20:26:22 -05003785 if (status >= 0) {
Trond Myklebustc3f52af2012-09-03 14:56:02 -04003786 memcpy(NFS_I(dir)->cookieverf, res.verifier.data, NFS4_VERIFIER_SIZE);
Trond Myklebustac396122010-11-15 20:26:22 -05003787 status += args.pgbase;
3788 }
Trond Myklebustc4812992007-09-28 17:11:45 -04003789
3790 nfs_invalidate_atime(dir);
3791
Harvey Harrison3110ff82008-05-02 13:42:44 -07003792 dprintk("%s: returns %d\n", __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003793 return status;
3794}
3795
3796static int nfs4_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
Bryan Schumaker56e4ebf2010-10-20 15:44:37 -04003797 u64 cookie, struct page **pages, unsigned int count, int plus)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003798{
3799 struct nfs4_exception exception = { };
3800 int err;
3801 do {
Trond Myklebustc1578b72013-08-12 16:58:42 -04003802 err = _nfs4_proc_readdir(dentry, cred, cookie,
3803 pages, count, plus);
3804 trace_nfs4_readdir(dentry->d_inode, err);
3805 err = nfs4_handle_exception(NFS_SERVER(dentry->d_inode), err,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003806 &exception);
3807 } while (exception.retry);
3808 return err;
3809}
3810
3811static int _nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
David Quigleyaa9c2662013-05-22 12:50:44 -04003812 struct iattr *sattr, struct nfs4_label *label, dev_t rdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003813{
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003814 struct nfs4_createdata *data;
3815 int mode = sattr->ia_mode;
3816 int status = -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003817
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003818 data = nfs4_alloc_createdata(dir, &dentry->d_name, sattr, NF4SOCK);
3819 if (data == NULL)
3820 goto out;
3821
Linus Torvalds1da177e2005-04-16 15:20:36 -07003822 if (S_ISFIFO(mode))
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003823 data->arg.ftype = NF4FIFO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003824 else if (S_ISBLK(mode)) {
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003825 data->arg.ftype = NF4BLK;
3826 data->arg.u.device.specdata1 = MAJOR(rdev);
3827 data->arg.u.device.specdata2 = MINOR(rdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003828 }
3829 else if (S_ISCHR(mode)) {
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003830 data->arg.ftype = NF4CHR;
3831 data->arg.u.device.specdata1 = MAJOR(rdev);
3832 data->arg.u.device.specdata2 = MINOR(rdev);
Trond Myklebust4ea8fed2012-10-15 15:47:41 -04003833 } else if (!S_ISSOCK(mode)) {
3834 status = -EINVAL;
3835 goto out_free;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003836 }
David Quigley1775fd32013-05-22 12:50:42 -04003837
David Quigleyaa9c2662013-05-22 12:50:44 -04003838 data->arg.label = label;
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003839 status = nfs4_do_create(dir, dentry, data);
Trond Myklebust4ea8fed2012-10-15 15:47:41 -04003840out_free:
Trond Myklebust57dc9a52008-06-20 15:35:32 -04003841 nfs4_free_createdata(data);
3842out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07003843 return status;
3844}
3845
3846static int nfs4_proc_mknod(struct inode *dir, struct dentry *dentry,
3847 struct iattr *sattr, dev_t rdev)
3848{
3849 struct nfs4_exception exception = { };
David Quigleyaa9c2662013-05-22 12:50:44 -04003850 struct nfs4_label l, *label = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003851 int err;
Aneesh Kumar K.Va8a5da92010-12-09 11:35:14 +00003852
David Quigleyaa9c2662013-05-22 12:50:44 -04003853 label = nfs4_label_init_security(dir, dentry, sattr, &l);
3854
Aneesh Kumar K.Va8a5da92010-12-09 11:35:14 +00003855 sattr->ia_mode &= ~current_umask();
Linus Torvalds1da177e2005-04-16 15:20:36 -07003856 do {
Trond Myklebust078ea3d2013-08-12 16:45:55 -04003857 err = _nfs4_proc_mknod(dir, dentry, sattr, label, rdev);
3858 trace_nfs4_mknod(dir, &dentry->d_name, err);
3859 err = nfs4_handle_exception(NFS_SERVER(dir), err,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003860 &exception);
3861 } while (exception.retry);
David Quigleyaa9c2662013-05-22 12:50:44 -04003862
3863 nfs4_label_release_security(label);
3864
Linus Torvalds1da177e2005-04-16 15:20:36 -07003865 return err;
3866}
3867
3868static int _nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
3869 struct nfs_fsstat *fsstat)
3870{
3871 struct nfs4_statfs_arg args = {
3872 .fh = fhandle,
3873 .bitmask = server->attr_bitmask,
3874 };
Benny Halevy24ad1482009-04-01 09:21:56 -04003875 struct nfs4_statfs_res res = {
3876 .fsstat = fsstat,
3877 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07003878 struct rpc_message msg = {
3879 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_STATFS],
3880 .rpc_argp = &args,
Benny Halevy24ad1482009-04-01 09:21:56 -04003881 .rpc_resp = &res,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003882 };
3883
Trond Myklebust0e574af2005-10-27 22:12:38 -04003884 nfs_fattr_init(fsstat->fattr);
Bryan Schumaker7c513052011-03-24 17:12:24 +00003885 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003886}
3887
3888static int nfs4_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsstat *fsstat)
3889{
3890 struct nfs4_exception exception = { };
3891 int err;
3892 do {
3893 err = nfs4_handle_exception(server,
3894 _nfs4_proc_statfs(server, fhandle, fsstat),
3895 &exception);
3896 } while (exception.retry);
3897 return err;
3898}
3899
3900static int _nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
3901 struct nfs_fsinfo *fsinfo)
3902{
3903 struct nfs4_fsinfo_arg args = {
3904 .fh = fhandle,
3905 .bitmask = server->attr_bitmask,
3906 };
Benny Halevy3dda5e42009-04-01 09:21:57 -04003907 struct nfs4_fsinfo_res res = {
3908 .fsinfo = fsinfo,
3909 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07003910 struct rpc_message msg = {
3911 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSINFO],
3912 .rpc_argp = &args,
Benny Halevy3dda5e42009-04-01 09:21:57 -04003913 .rpc_resp = &res,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003914 };
3915
Bryan Schumaker7c513052011-03-24 17:12:24 +00003916 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003917}
3918
3919static int nfs4_do_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
3920{
3921 struct nfs4_exception exception = { };
Chuck Lever83ca7f52013-03-16 15:55:53 -04003922 unsigned long now = jiffies;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003923 int err;
3924
3925 do {
Chuck Lever83ca7f52013-03-16 15:55:53 -04003926 err = _nfs4_do_fsinfo(server, fhandle, fsinfo);
Trond Myklebustb5f875a2013-08-13 13:01:39 -04003927 trace_nfs4_fsinfo(server, fhandle, fsinfo->fattr, err);
Chuck Lever83ca7f52013-03-16 15:55:53 -04003928 if (err == 0) {
3929 struct nfs_client *clp = server->nfs_client;
3930
3931 spin_lock(&clp->cl_lock);
3932 clp->cl_lease_time = fsinfo->lease_time * HZ;
3933 clp->cl_last_renewal = now;
3934 spin_unlock(&clp->cl_lock);
3935 break;
3936 }
3937 err = nfs4_handle_exception(server, err, &exception);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003938 } while (exception.retry);
3939 return err;
3940}
3941
3942static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
3943{
Bryan Schumakere38eb652012-06-20 15:53:40 -04003944 int error;
3945
Trond Myklebust0e574af2005-10-27 22:12:38 -04003946 nfs_fattr_init(fsinfo->fattr);
Bryan Schumakere38eb652012-06-20 15:53:40 -04003947 error = nfs4_do_fsinfo(server, fhandle, fsinfo);
Peng Taodc182542012-08-24 00:27:49 +08003948 if (error == 0) {
3949 /* block layout checks this! */
3950 server->pnfs_blksize = fsinfo->blksize;
Bryan Schumakere38eb652012-06-20 15:53:40 -04003951 set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype);
Peng Taodc182542012-08-24 00:27:49 +08003952 }
Bryan Schumakere38eb652012-06-20 15:53:40 -04003953
3954 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003955}
3956
3957static int _nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
3958 struct nfs_pathconf *pathconf)
3959{
3960 struct nfs4_pathconf_arg args = {
3961 .fh = fhandle,
3962 .bitmask = server->attr_bitmask,
3963 };
Benny Halevyd45b2982009-04-01 09:21:58 -04003964 struct nfs4_pathconf_res res = {
3965 .pathconf = pathconf,
3966 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07003967 struct rpc_message msg = {
3968 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_PATHCONF],
3969 .rpc_argp = &args,
Benny Halevyd45b2982009-04-01 09:21:58 -04003970 .rpc_resp = &res,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003971 };
3972
3973 /* None of the pathconf attributes are mandatory to implement */
3974 if ((args.bitmask[0] & nfs4_pathconf_bitmap[0]) == 0) {
3975 memset(pathconf, 0, sizeof(*pathconf));
3976 return 0;
3977 }
3978
Trond Myklebust0e574af2005-10-27 22:12:38 -04003979 nfs_fattr_init(pathconf->fattr);
Bryan Schumaker7c513052011-03-24 17:12:24 +00003980 return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003981}
3982
3983static int nfs4_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
3984 struct nfs_pathconf *pathconf)
3985{
3986 struct nfs4_exception exception = { };
3987 int err;
3988
3989 do {
3990 err = nfs4_handle_exception(server,
3991 _nfs4_proc_pathconf(server, fhandle, pathconf),
3992 &exception);
3993 } while (exception.retry);
3994 return err;
3995}
3996
Trond Myklebust5521abf2013-03-16 20:54:34 -04003997int nfs4_set_rw_stateid(nfs4_stateid *stateid,
Trond Myklebust9b206142013-03-17 15:52:00 -04003998 const struct nfs_open_context *ctx,
3999 const struct nfs_lock_context *l_ctx,
4000 fmode_t fmode)
4001{
4002 const struct nfs_lockowner *lockowner = NULL;
4003
4004 if (l_ctx != NULL)
4005 lockowner = &l_ctx->lockowner;
Trond Myklebust5521abf2013-03-16 20:54:34 -04004006 return nfs4_select_rw_stateid(stateid, ctx->state, fmode, lockowner);
Trond Myklebust9b206142013-03-17 15:52:00 -04004007}
4008EXPORT_SYMBOL_GPL(nfs4_set_rw_stateid);
4009
Trond Myklebust5521abf2013-03-16 20:54:34 -04004010static bool nfs4_stateid_is_current(nfs4_stateid *stateid,
4011 const struct nfs_open_context *ctx,
4012 const struct nfs_lock_context *l_ctx,
4013 fmode_t fmode)
4014{
4015 nfs4_stateid current_stateid;
4016
Trond Myklebuste1253be2014-03-05 08:44:23 -05004017 /* If the current stateid represents a lost lock, then exit */
4018 if (nfs4_set_rw_stateid(&current_stateid, ctx, l_ctx, fmode) == -EIO)
4019 return true;
Trond Myklebust5521abf2013-03-16 20:54:34 -04004020 return nfs4_stateid_match(stateid, &current_stateid);
4021}
4022
4023static bool nfs4_error_stateid_expired(int err)
4024{
4025 switch (err) {
4026 case -NFS4ERR_DELEG_REVOKED:
4027 case -NFS4ERR_ADMIN_REVOKED:
4028 case -NFS4ERR_BAD_STATEID:
4029 case -NFS4ERR_STALE_STATEID:
4030 case -NFS4ERR_OLD_STATEID:
4031 case -NFS4ERR_OPENMODE:
4032 case -NFS4ERR_EXPIRED:
4033 return true;
4034 }
4035 return false;
4036}
4037
Benny Halevyd20581a2011-05-22 19:52:03 +03004038void __nfs4_read_done_cb(struct nfs_read_data *data)
4039{
Fred Isamancd841602012-04-20 14:47:44 -04004040 nfs_invalidate_atime(data->header->inode);
Benny Halevyd20581a2011-05-22 19:52:03 +03004041}
4042
Andy Adamsoncbdabc7f2011-03-01 01:34:20 +00004043static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004044{
Fred Isamancd841602012-04-20 14:47:44 -04004045 struct nfs_server *server = NFS_SERVER(data->header->inode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004046
Trond Myklebustcc668ab2013-08-14 15:31:28 -04004047 trace_nfs4_read(data, task->tk_status);
Trond Myklebust9e33bed2008-12-23 15:21:46 -05004048 if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) {
Trond Myklebustd00c5d42011-10-19 12:17:29 -07004049 rpc_restart_call_prepare(task);
Trond Myklebustec06c092006-03-20 13:44:27 -05004050 return -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004051 }
Trond Myklebust8850df92007-09-28 17:20:07 -04004052
Benny Halevyd20581a2011-05-22 19:52:03 +03004053 __nfs4_read_done_cb(data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004054 if (task->tk_status > 0)
Trond Myklebustec06c092006-03-20 13:44:27 -05004055 renew_lease(server, data->timestamp);
4056 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004057}
4058
Trond Myklebust5521abf2013-03-16 20:54:34 -04004059static bool nfs4_read_stateid_changed(struct rpc_task *task,
4060 struct nfs_readargs *args)
4061{
4062
4063 if (!nfs4_error_stateid_expired(task->tk_status) ||
4064 nfs4_stateid_is_current(&args->stateid,
4065 args->context,
4066 args->lock_context,
4067 FMODE_READ))
4068 return false;
4069 rpc_restart_call_prepare(task);
4070 return true;
4071}
4072
Andy Adamsoncbdabc7f2011-03-01 01:34:20 +00004073static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
4074{
4075
4076 dprintk("--> %s\n", __func__);
4077
4078 if (!nfs4_sequence_done(task, &data->res.seq_res))
4079 return -EAGAIN;
Trond Myklebust5521abf2013-03-16 20:54:34 -04004080 if (nfs4_read_stateid_changed(task, &data->args))
4081 return -EAGAIN;
Benny Halevyd20581a2011-05-22 19:52:03 +03004082 return data->read_done_cb ? data->read_done_cb(task, data) :
4083 nfs4_read_done_cb(task, data);
Andy Adamsoncbdabc7f2011-03-01 01:34:20 +00004084}
4085
Trond Myklebustbdc7f022007-07-14 15:40:00 -04004086static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004087{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004088 data->timestamp = jiffies;
Andy Adamsoncbdabc7f2011-03-01 01:34:20 +00004089 data->read_done_cb = nfs4_read_done_cb;
Trond Myklebustbdc7f022007-07-14 15:40:00 -04004090 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ];
Chuck Levera9c92d62013-08-09 12:48:18 -04004091 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004092}
4093
NeilBrownef1820f2013-09-04 17:04:49 +10004094static int nfs4_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data)
Bryan Schumakerea7c3302012-03-19 14:54:40 -04004095{
Trond Myklebust9b206142013-03-17 15:52:00 -04004096 if (nfs4_setup_sequence(NFS_SERVER(data->header->inode),
Trond Myklebustd9afbd12012-10-22 20:28:44 -04004097 &data->args.seq_args,
4098 &data->res.seq_res,
Trond Myklebust9b206142013-03-17 15:52:00 -04004099 task))
NeilBrownef1820f2013-09-04 17:04:49 +10004100 return 0;
4101 if (nfs4_set_rw_stateid(&data->args.stateid, data->args.context,
4102 data->args.lock_context, FMODE_READ) == -EIO)
4103 return -EIO;
4104 if (unlikely(test_bit(NFS_CONTEXT_BAD, &data->args.context->flags)))
4105 return -EIO;
4106 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004107}
4108
Fred Isamanb029bc92011-03-03 15:13:42 +00004109static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_write_data *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004110{
Fred Isamancd841602012-04-20 14:47:44 -04004111 struct inode *inode = data->header->inode;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004112
Trond Myklebustcc668ab2013-08-14 15:31:28 -04004113 trace_nfs4_write(data, task->tk_status);
Trond Myklebust9e33bed2008-12-23 15:21:46 -05004114 if (nfs4_async_handle_error(task, NFS_SERVER(inode), data->args.context->state) == -EAGAIN) {
Trond Myklebustd00c5d42011-10-19 12:17:29 -07004115 rpc_restart_call_prepare(task);
Trond Myklebust788e7a82006-03-20 13:44:27 -05004116 return -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004117 }
Trond Myklebust4f9838c2005-10-27 22:12:44 -04004118 if (task->tk_status >= 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07004119 renew_lease(NFS_SERVER(inode), data->timestamp);
Trond Myklebust5a37f852012-04-28 14:55:16 -04004120 nfs_post_op_update_inode_force_wcc(inode, &data->fattr);
Trond Myklebust4f9838c2005-10-27 22:12:44 -04004121 }
Trond Myklebust788e7a82006-03-20 13:44:27 -05004122 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004123}
4124
Trond Myklebust5521abf2013-03-16 20:54:34 -04004125static bool nfs4_write_stateid_changed(struct rpc_task *task,
4126 struct nfs_writeargs *args)
4127{
4128
4129 if (!nfs4_error_stateid_expired(task->tk_status) ||
4130 nfs4_stateid_is_current(&args->stateid,
4131 args->context,
4132 args->lock_context,
4133 FMODE_WRITE))
4134 return false;
4135 rpc_restart_call_prepare(task);
4136 return true;
4137}
4138
Fred Isamanb029bc92011-03-03 15:13:42 +00004139static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
4140{
4141 if (!nfs4_sequence_done(task, &data->res.seq_res))
4142 return -EAGAIN;
Trond Myklebust5521abf2013-03-16 20:54:34 -04004143 if (nfs4_write_stateid_changed(task, &data->args))
4144 return -EAGAIN;
Benny Halevyd20581a2011-05-22 19:52:03 +03004145 return data->write_done_cb ? data->write_done_cb(task, data) :
4146 nfs4_write_done_cb(task, data);
Fred Isamanb029bc92011-03-03 15:13:42 +00004147}
4148
Trond Myklebust5a37f852012-04-28 14:55:16 -04004149static
4150bool nfs4_write_need_cache_consistency_data(const struct nfs_write_data *data)
Fred Isamana69aef12011-03-03 15:13:47 +00004151{
Trond Myklebust5a37f852012-04-28 14:55:16 -04004152 const struct nfs_pgio_header *hdr = data->header;
4153
4154 /* Don't request attributes for pNFS or O_DIRECT writes */
4155 if (data->ds_clp != NULL || hdr->dreq != NULL)
4156 return false;
4157 /* Otherwise, request attributes if and only if we don't hold
4158 * a delegation
4159 */
Bryan Schumaker011e2a72012-06-20 15:53:43 -04004160 return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0;
Fred Isamana69aef12011-03-03 15:13:47 +00004161}
Fred Isamana69aef12011-03-03 15:13:47 +00004162
Trond Myklebustbdc7f022007-07-14 15:40:00 -04004163static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004164{
Fred Isamancd841602012-04-20 14:47:44 -04004165 struct nfs_server *server = NFS_SERVER(data->header->inode);
Trond Myklebustbdc7f022007-07-14 15:40:00 -04004166
Trond Myklebust5a37f852012-04-28 14:55:16 -04004167 if (!nfs4_write_need_cache_consistency_data(data)) {
Fred Isaman7ffd1062011-03-03 15:13:46 +00004168 data->args.bitmask = NULL;
4169 data->res.fattr = NULL;
4170 } else
4171 data->args.bitmask = server->cache_consistency_bitmask;
Trond Myklebust5a37f852012-04-28 14:55:16 -04004172
Fred Isamanb029bc92011-03-03 15:13:42 +00004173 if (!data->write_done_cb)
4174 data->write_done_cb = nfs4_write_done_cb;
Trond Myklebust4f9838c2005-10-27 22:12:44 -04004175 data->res.server = server;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004176 data->timestamp = jiffies;
4177
Trond Myklebustbdc7f022007-07-14 15:40:00 -04004178 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE];
Chuck Levera9c92d62013-08-09 12:48:18 -04004179 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004180}
4181
NeilBrownef1820f2013-09-04 17:04:49 +10004182static int nfs4_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data)
Bryan Schumakerc6cb80d2012-03-19 14:54:39 -04004183{
Trond Myklebust9b206142013-03-17 15:52:00 -04004184 if (nfs4_setup_sequence(NFS_SERVER(data->header->inode),
Trond Myklebustd9afbd12012-10-22 20:28:44 -04004185 &data->args.seq_args,
4186 &data->res.seq_res,
Trond Myklebust9b206142013-03-17 15:52:00 -04004187 task))
NeilBrownef1820f2013-09-04 17:04:49 +10004188 return 0;
4189 if (nfs4_set_rw_stateid(&data->args.stateid, data->args.context,
4190 data->args.lock_context, FMODE_WRITE) == -EIO)
4191 return -EIO;
4192 if (unlikely(test_bit(NFS_CONTEXT_BAD, &data->args.context->flags)))
4193 return -EIO;
4194 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004195}
4196
Fred Isaman0b7c0152012-04-20 14:47:39 -04004197static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data)
4198{
Trond Myklebustd9afbd12012-10-22 20:28:44 -04004199 nfs4_setup_sequence(NFS_SERVER(data->inode),
4200 &data->args.seq_args,
4201 &data->res.seq_res,
4202 task);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004203}
4204
Fred Isaman0b7c0152012-04-20 14:47:39 -04004205static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004206{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004207 struct inode *inode = data->inode;
Trond Myklebust14516c32010-07-31 14:29:06 -04004208
Trond Myklebustcc668ab2013-08-14 15:31:28 -04004209 trace_nfs4_commit(data, task->tk_status);
Trond Myklebust9e33bed2008-12-23 15:21:46 -05004210 if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) {
Trond Myklebustd00c5d42011-10-19 12:17:29 -07004211 rpc_restart_call_prepare(task);
Trond Myklebust788e7a82006-03-20 13:44:27 -05004212 return -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004213 }
Trond Myklebust788e7a82006-03-20 13:44:27 -05004214 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004215}
4216
Fred Isaman0b7c0152012-04-20 14:47:39 -04004217static int nfs4_commit_done(struct rpc_task *task, struct nfs_commit_data *data)
Fred Isaman5f452432011-03-23 13:27:46 +00004218{
4219 if (!nfs4_sequence_done(task, &data->res.seq_res))
4220 return -EAGAIN;
Fred Isaman0b7c0152012-04-20 14:47:39 -04004221 return data->commit_done_cb(task, data);
Fred Isaman5f452432011-03-23 13:27:46 +00004222}
4223
Fred Isaman0b7c0152012-04-20 14:47:39 -04004224static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004225{
Trond Myklebust788e7a82006-03-20 13:44:27 -05004226 struct nfs_server *server = NFS_SERVER(data->inode);
Fred Isaman988b6dc2011-03-23 13:27:52 +00004227
Fred Isaman0b7c0152012-04-20 14:47:39 -04004228 if (data->commit_done_cb == NULL)
4229 data->commit_done_cb = nfs4_commit_done_cb;
Trond Myklebust4f9838c2005-10-27 22:12:44 -04004230 data->res.server = server;
Trond Myklebustbdc7f022007-07-14 15:40:00 -04004231 msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
Chuck Levera9c92d62013-08-09 12:48:18 -04004232 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004233}
4234
Chuck Lever9bc4e3c2010-05-07 13:34:17 -04004235struct nfs4_renewdata {
4236 struct nfs_client *client;
4237 unsigned long timestamp;
4238};
4239
Linus Torvalds1da177e2005-04-16 15:20:36 -07004240/*
4241 * nfs4_proc_async_renew(): This is not one of the nfs_rpc_ops; it is a special
4242 * standalone procedure for queueing an asynchronous RENEW.
4243 */
Chuck Lever9bc4e3c2010-05-07 13:34:17 -04004244static void nfs4_renew_release(void *calldata)
Alexandros Batsakisdc96aef2010-02-05 03:45:04 -08004245{
Chuck Lever9bc4e3c2010-05-07 13:34:17 -04004246 struct nfs4_renewdata *data = calldata;
4247 struct nfs_client *clp = data->client;
Alexandros Batsakisdc96aef2010-02-05 03:45:04 -08004248
Alexandros Batsakis0851de062010-02-05 03:45:06 -08004249 if (atomic_read(&clp->cl_count) > 1)
4250 nfs4_schedule_state_renewal(clp);
4251 nfs_put_client(clp);
Chuck Lever9bc4e3c2010-05-07 13:34:17 -04004252 kfree(data);
Alexandros Batsakisdc96aef2010-02-05 03:45:04 -08004253}
4254
Chuck Lever9bc4e3c2010-05-07 13:34:17 -04004255static void nfs4_renew_done(struct rpc_task *task, void *calldata)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004256{
Chuck Lever9bc4e3c2010-05-07 13:34:17 -04004257 struct nfs4_renewdata *data = calldata;
4258 struct nfs_client *clp = data->client;
4259 unsigned long timestamp = data->timestamp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004260
Trond Myklebustc6d01c62013-08-09 11:51:26 -04004261 trace_nfs4_renew_async(clp, task->tk_status);
Chuck Leverf8aba1e2013-10-17 14:13:53 -04004262 switch (task->tk_status) {
4263 case 0:
4264 break;
4265 case -NFS4ERR_LEASE_MOVED:
4266 nfs4_schedule_lease_moved_recovery(clp);
4267 break;
4268 default:
Trond Myklebust95baa252009-05-26 14:51:00 -04004269 /* Unless we're shutting down, schedule state recovery! */
Trond Myklebust042b60b2011-08-24 15:07:37 -04004270 if (test_bit(NFS_CS_RENEWD, &clp->cl_res_state) == 0)
4271 return;
4272 if (task->tk_status != NFS4ERR_CB_PATH_DOWN) {
Trond Myklebust0400a6b2011-03-09 16:00:53 -05004273 nfs4_schedule_lease_recovery(clp);
Trond Myklebust042b60b2011-08-24 15:07:37 -04004274 return;
4275 }
4276 nfs4_schedule_path_down_recovery(clp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004277 }
Trond Myklebust452e9352010-07-31 14:29:06 -04004278 do_renew_lease(clp, timestamp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004279}
4280
Trond Myklebust963d8fe2006-01-03 09:55:04 +01004281static const struct rpc_call_ops nfs4_renew_ops = {
4282 .rpc_call_done = nfs4_renew_done,
Alexandros Batsakisdc96aef2010-02-05 03:45:04 -08004283 .rpc_release = nfs4_renew_release,
Trond Myklebust963d8fe2006-01-03 09:55:04 +01004284};
4285
Trond Myklebust2f60ea62011-08-24 15:07:37 -04004286static int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004287{
4288 struct rpc_message msg = {
4289 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
4290 .rpc_argp = clp,
Trond Myklebustb4454fe2006-01-03 09:55:25 +01004291 .rpc_cred = cred,
Linus Torvalds1da177e2005-04-16 15:20:36 -07004292 };
Chuck Lever9bc4e3c2010-05-07 13:34:17 -04004293 struct nfs4_renewdata *data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004294
Trond Myklebust2f60ea62011-08-24 15:07:37 -04004295 if (renew_flags == 0)
4296 return 0;
Alexandros Batsakis0851de062010-02-05 03:45:06 -08004297 if (!atomic_inc_not_zero(&clp->cl_count))
4298 return -EIO;
Trond Myklebustb569ad32011-08-24 15:07:35 -04004299 data = kmalloc(sizeof(*data), GFP_NOFS);
Chuck Lever9bc4e3c2010-05-07 13:34:17 -04004300 if (data == NULL)
4301 return -ENOMEM;
4302 data->client = clp;
4303 data->timestamp = jiffies;
Trond Myklebustbc7a05c2013-04-08 17:50:28 -04004304 return rpc_call_async(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT,
Chuck Lever9bc4e3c2010-05-07 13:34:17 -04004305 &nfs4_renew_ops, data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004306}
4307
Trond Myklebust8534d4e2011-08-24 15:07:37 -04004308static int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004309{
4310 struct rpc_message msg = {
4311 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
4312 .rpc_argp = clp,
Trond Myklebustb4454fe2006-01-03 09:55:25 +01004313 .rpc_cred = cred,
Linus Torvalds1da177e2005-04-16 15:20:36 -07004314 };
4315 unsigned long now = jiffies;
4316 int status;
4317
Trond Myklebustbc7a05c2013-04-08 17:50:28 -04004318 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004319 if (status < 0)
4320 return status;
Trond Myklebust452e9352010-07-31 14:29:06 -04004321 do_renew_lease(clp, now);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004322 return 0;
4323}
4324
J. Bruce Fieldsaa1870a2005-06-22 17:16:22 +00004325static inline int nfs4_server_supports_acls(struct nfs_server *server)
4326{
Malahal Naineni7dd7d952014-01-23 08:54:55 -06004327 return server->caps & NFS_CAP_ACLS;
J. Bruce Fieldsaa1870a2005-06-22 17:16:22 +00004328}
4329
Trond Myklebust21f498c2012-08-24 10:59:25 -04004330/* Assuming that XATTR_SIZE_MAX is a multiple of PAGE_SIZE, and that
4331 * it's OK to put sizeof(void) * (XATTR_SIZE_MAX/PAGE_SIZE) bytes on
J. Bruce Fieldsaa1870a2005-06-22 17:16:22 +00004332 * the stack.
4333 */
Trond Myklebust21f498c2012-08-24 10:59:25 -04004334#define NFS4ACL_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
J. Bruce Fieldsaa1870a2005-06-22 17:16:22 +00004335
Neil Hormane9e3d722011-03-04 19:26:03 -05004336static int buf_to_pages_noslab(const void *buf, size_t buflen,
4337 struct page **pages, unsigned int *pgbase)
4338{
4339 struct page *newpage, **spages;
4340 int rc = 0;
4341 size_t len;
4342 spages = pages;
4343
4344 do {
Trond Myklebust21f498c2012-08-24 10:59:25 -04004345 len = min_t(size_t, PAGE_SIZE, buflen);
Neil Hormane9e3d722011-03-04 19:26:03 -05004346 newpage = alloc_page(GFP_KERNEL);
4347
4348 if (newpage == NULL)
4349 goto unwind;
4350 memcpy(page_address(newpage), buf, len);
4351 buf += len;
4352 buflen -= len;
4353 *pages++ = newpage;
4354 rc++;
4355 } while (buflen != 0);
4356
4357 return rc;
4358
4359unwind:
4360 for(; rc > 0; rc--)
4361 __free_page(spages[rc-1]);
4362 return -ENOMEM;
4363}
4364
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00004365struct nfs4_cached_acl {
4366 int cached;
4367 size_t len;
Andrew Morton3e9d4152005-06-22 17:16:28 +00004368 char data[0];
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00004369};
4370
4371static void nfs4_set_cached_acl(struct inode *inode, struct nfs4_cached_acl *acl)
J. Bruce Fieldsaa1870a2005-06-22 17:16:22 +00004372{
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00004373 struct nfs_inode *nfsi = NFS_I(inode);
4374
4375 spin_lock(&inode->i_lock);
4376 kfree(nfsi->nfs4_acl);
4377 nfsi->nfs4_acl = acl;
4378 spin_unlock(&inode->i_lock);
4379}
4380
4381static void nfs4_zap_acl_attr(struct inode *inode)
4382{
4383 nfs4_set_cached_acl(inode, NULL);
4384}
4385
4386static inline ssize_t nfs4_read_cached_acl(struct inode *inode, char *buf, size_t buflen)
4387{
4388 struct nfs_inode *nfsi = NFS_I(inode);
4389 struct nfs4_cached_acl *acl;
4390 int ret = -ENOENT;
4391
4392 spin_lock(&inode->i_lock);
4393 acl = nfsi->nfs4_acl;
4394 if (acl == NULL)
4395 goto out;
4396 if (buf == NULL) /* user is just asking for length */
4397 goto out_len;
4398 if (acl->cached == 0)
4399 goto out;
4400 ret = -ERANGE; /* see getxattr(2) man page */
4401 if (acl->len > buflen)
4402 goto out;
4403 memcpy(buf, acl->data, acl->len);
4404out_len:
4405 ret = acl->len;
4406out:
4407 spin_unlock(&inode->i_lock);
4408 return ret;
4409}
4410
Sachin Prabhu5794d212012-04-17 14:36:40 +01004411static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len)
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00004412{
4413 struct nfs4_cached_acl *acl;
Trond Myklebustb291f1b2012-08-14 18:30:41 -04004414 size_t buflen = sizeof(*acl) + acl_len;
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00004415
Trond Myklebust1f1ea6c2012-08-26 11:44:43 -07004416 if (buflen <= PAGE_SIZE) {
Trond Myklebustb291f1b2012-08-14 18:30:41 -04004417 acl = kmalloc(buflen, GFP_KERNEL);
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00004418 if (acl == NULL)
4419 goto out;
4420 acl->cached = 1;
Sachin Prabhu5794d212012-04-17 14:36:40 +01004421 _copy_from_pages(acl->data, pages, pgbase, acl_len);
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00004422 } else {
4423 acl = kmalloc(sizeof(*acl), GFP_KERNEL);
4424 if (acl == NULL)
4425 goto out;
4426 acl->cached = 0;
4427 }
4428 acl->len = acl_len;
4429out:
4430 nfs4_set_cached_acl(inode, acl);
4431}
4432
Andy Adamsonbf118a32011-12-07 11:55:27 -05004433/*
4434 * The getxattr API returns the required buffer length when called with a
4435 * NULL buf. The NFSv4 acl tool then calls getxattr again after allocating
4436 * the required buf. On a NULL buf, we send a page of data to the server
4437 * guessing that the ACL request can be serviced by a page. If so, we cache
4438 * up to the page of ACL data, and the 2nd call to getxattr is serviced by
4439 * the cache. If not so, we throw away the page, and cache the required
4440 * length. The next getxattr call will then produce another round trip to
4441 * the server, this time with the input buf of the required size.
4442 */
Trond Myklebust16b4289c2006-08-24 12:27:15 -04004443static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00004444{
Andy Adamsonbf118a32011-12-07 11:55:27 -05004445 struct page *pages[NFS4ACL_MAXPAGES] = {NULL, };
J. Bruce Fieldsaa1870a2005-06-22 17:16:22 +00004446 struct nfs_getaclargs args = {
4447 .fh = NFS_FH(inode),
4448 .acl_pages = pages,
4449 .acl_len = buflen,
4450 };
Benny Halevy663c79b2009-04-01 09:21:59 -04004451 struct nfs_getaclres res = {
4452 .acl_len = buflen,
4453 };
J. Bruce Fieldsaa1870a2005-06-22 17:16:22 +00004454 struct rpc_message msg = {
4455 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL],
4456 .rpc_argp = &args,
Benny Halevy663c79b2009-04-01 09:21:59 -04004457 .rpc_resp = &res,
J. Bruce Fieldsaa1870a2005-06-22 17:16:22 +00004458 };
Trond Myklebust21f498c2012-08-24 10:59:25 -04004459 unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE);
4460 int ret = -ENOMEM, i;
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00004461
Andy Adamsonbf118a32011-12-07 11:55:27 -05004462 /* As long as we're doing a round trip to the server anyway,
4463 * let's be prepared for a page of acl data. */
4464 if (npages == 0)
4465 npages = 1;
Trond Myklebust21f498c2012-08-24 10:59:25 -04004466 if (npages > ARRAY_SIZE(pages))
4467 return -ERANGE;
Sachin Prabhu5a006892012-04-17 14:35:39 +01004468
Andy Adamsonbf118a32011-12-07 11:55:27 -05004469 for (i = 0; i < npages; i++) {
4470 pages[i] = alloc_page(GFP_KERNEL);
4471 if (!pages[i])
4472 goto out_free;
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00004473 }
Sachin Prabhu5a006892012-04-17 14:35:39 +01004474
4475 /* for decoding across pages */
4476 res.acl_scratch = alloc_page(GFP_KERNEL);
4477 if (!res.acl_scratch)
4478 goto out_free;
4479
Andy Adamsonbf118a32011-12-07 11:55:27 -05004480 args.acl_len = npages * PAGE_SIZE;
4481 args.acl_pgbase = 0;
Sachin Prabhu5a006892012-04-17 14:35:39 +01004482
Peng Taode040be2012-01-10 22:42:47 +08004483 dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n",
Andy Adamsonbf118a32011-12-07 11:55:27 -05004484 __func__, buf, buflen, npages, args.acl_len);
4485 ret = nfs4_call_sync(NFS_SERVER(inode)->client, NFS_SERVER(inode),
4486 &msg, &args.seq_args, &res.seq_res, 0);
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00004487 if (ret)
4488 goto out_free;
Andy Adamsonbf118a32011-12-07 11:55:27 -05004489
Trond Myklebust1f1ea6c2012-08-26 11:44:43 -07004490 /* Handle the case where the passed-in buffer is too short */
4491 if (res.acl_flags & NFS4_ACL_TRUNC) {
4492 /* Did the user only issue a request for the acl length? */
4493 if (buf == NULL)
4494 goto out_ok;
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00004495 ret = -ERANGE;
Trond Myklebust1f1ea6c2012-08-26 11:44:43 -07004496 goto out_free;
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00004497 }
Trond Myklebust1f1ea6c2012-08-26 11:44:43 -07004498 nfs4_write_cached_acl(inode, pages, res.acl_data_offset, res.acl_len);
Sven Wegener7d3e91a2012-12-08 15:30:18 +01004499 if (buf) {
4500 if (res.acl_len > buflen) {
4501 ret = -ERANGE;
4502 goto out_free;
4503 }
Trond Myklebust1f1ea6c2012-08-26 11:44:43 -07004504 _copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len);
Sven Wegener7d3e91a2012-12-08 15:30:18 +01004505 }
Trond Myklebust1f1ea6c2012-08-26 11:44:43 -07004506out_ok:
4507 ret = res.acl_len;
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00004508out_free:
Andy Adamsonbf118a32011-12-07 11:55:27 -05004509 for (i = 0; i < npages; i++)
4510 if (pages[i])
4511 __free_page(pages[i]);
Trond Myklebust331818f2012-02-03 18:30:53 -05004512 if (res.acl_scratch)
4513 __free_page(res.acl_scratch);
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00004514 return ret;
4515}
4516
Trond Myklebust16b4289c2006-08-24 12:27:15 -04004517static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
4518{
4519 struct nfs4_exception exception = { };
4520 ssize_t ret;
4521 do {
4522 ret = __nfs4_get_acl_uncached(inode, buf, buflen);
Trond Myklebustc1578b72013-08-12 16:58:42 -04004523 trace_nfs4_get_acl(inode, ret);
Trond Myklebust16b4289c2006-08-24 12:27:15 -04004524 if (ret >= 0)
4525 break;
4526 ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception);
4527 } while (exception.retry);
4528 return ret;
4529}
4530
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00004531static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen)
4532{
4533 struct nfs_server *server = NFS_SERVER(inode);
J. Bruce Fieldsaa1870a2005-06-22 17:16:22 +00004534 int ret;
4535
4536 if (!nfs4_server_supports_acls(server))
4537 return -EOPNOTSUPP;
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00004538 ret = nfs_revalidate_inode(server, inode);
4539 if (ret < 0)
4540 return ret;
Aneesh Kumar K.V08a22b32010-12-01 10:42:16 +00004541 if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL)
4542 nfs_zap_acl_cache(inode);
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00004543 ret = nfs4_read_cached_acl(inode, buf, buflen);
4544 if (ret != -ENOENT)
Andy Adamsonbf118a32011-12-07 11:55:27 -05004545 /* -ENOENT is returned if there is no ACL or if there is an ACL
4546 * but no cached acl data, just the acl length */
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00004547 return ret;
4548 return nfs4_get_acl_uncached(inode, buf, buflen);
J. Bruce Fieldsaa1870a2005-06-22 17:16:22 +00004549}
4550
Trond Myklebust16b4289c2006-08-24 12:27:15 -04004551static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
J. Bruce Fields4b580ee2005-06-22 17:16:23 +00004552{
4553 struct nfs_server *server = NFS_SERVER(inode);
4554 struct page *pages[NFS4ACL_MAXPAGES];
4555 struct nfs_setaclargs arg = {
4556 .fh = NFS_FH(inode),
4557 .acl_pages = pages,
4558 .acl_len = buflen,
4559 };
Benny Halevy73c403a2009-04-01 09:22:01 -04004560 struct nfs_setaclres res;
J. Bruce Fields4b580ee2005-06-22 17:16:23 +00004561 struct rpc_message msg = {
4562 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETACL],
4563 .rpc_argp = &arg,
Benny Halevy73c403a2009-04-01 09:22:01 -04004564 .rpc_resp = &res,
J. Bruce Fields4b580ee2005-06-22 17:16:23 +00004565 };
Trond Myklebust21f498c2012-08-24 10:59:25 -04004566 unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE);
Neil Hormane9e3d722011-03-04 19:26:03 -05004567 int ret, i;
J. Bruce Fields4b580ee2005-06-22 17:16:23 +00004568
4569 if (!nfs4_server_supports_acls(server))
4570 return -EOPNOTSUPP;
Trond Myklebust21f498c2012-08-24 10:59:25 -04004571 if (npages > ARRAY_SIZE(pages))
4572 return -ERANGE;
Neil Hormane9e3d722011-03-04 19:26:03 -05004573 i = buf_to_pages_noslab(buf, buflen, arg.acl_pages, &arg.acl_pgbase);
4574 if (i < 0)
4575 return i;
Bryan Schumaker57ec14c2012-06-20 15:53:44 -04004576 nfs4_inode_return_delegation(inode);
Bryan Schumaker7c513052011-03-24 17:12:24 +00004577 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
Neil Hormane9e3d722011-03-04 19:26:03 -05004578
4579 /*
4580 * Free each page after tx, so the only ref left is
4581 * held by the network stack
4582 */
4583 for (; i > 0; i--)
4584 put_page(pages[i-1]);
4585
Aneesh Kumar K.V08a22b32010-12-01 10:42:16 +00004586 /*
4587 * Acl update can result in inode attribute update.
4588 * so mark the attribute cache invalid.
4589 */
4590 spin_lock(&inode->i_lock);
4591 NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR;
4592 spin_unlock(&inode->i_lock);
Trond Myklebustf41f7412008-06-11 17:39:04 -04004593 nfs_access_zap_cache(inode);
4594 nfs_zap_acl_cache(inode);
J. Bruce Fields4b580ee2005-06-22 17:16:23 +00004595 return ret;
4596}
4597
Trond Myklebust16b4289c2006-08-24 12:27:15 -04004598static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
4599{
4600 struct nfs4_exception exception = { };
4601 int err;
4602 do {
Trond Myklebustc1578b72013-08-12 16:58:42 -04004603 err = __nfs4_proc_set_acl(inode, buf, buflen);
4604 trace_nfs4_set_acl(inode, err);
4605 err = nfs4_handle_exception(NFS_SERVER(inode), err,
Trond Myklebust16b4289c2006-08-24 12:27:15 -04004606 &exception);
4607 } while (exception.retry);
4608 return err;
4609}
4610
David Quigleyaa9c2662013-05-22 12:50:44 -04004611#ifdef CONFIG_NFS_V4_SECURITY_LABEL
4612static int _nfs4_get_security_label(struct inode *inode, void *buf,
4613 size_t buflen)
4614{
4615 struct nfs_server *server = NFS_SERVER(inode);
4616 struct nfs_fattr fattr;
4617 struct nfs4_label label = {0, 0, buflen, buf};
4618
4619 u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL };
Trond Myklebustfcb63a92013-11-01 12:42:25 -04004620 struct nfs4_getattr_arg arg = {
David Quigleyaa9c2662013-05-22 12:50:44 -04004621 .fh = NFS_FH(inode),
4622 .bitmask = bitmask,
4623 };
4624 struct nfs4_getattr_res res = {
4625 .fattr = &fattr,
4626 .label = &label,
4627 .server = server,
4628 };
4629 struct rpc_message msg = {
4630 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETATTR],
Trond Myklebustfcb63a92013-11-01 12:42:25 -04004631 .rpc_argp = &arg,
David Quigleyaa9c2662013-05-22 12:50:44 -04004632 .rpc_resp = &res,
4633 };
4634 int ret;
4635
4636 nfs_fattr_init(&fattr);
4637
Trond Myklebustfcb63a92013-11-01 12:42:25 -04004638 ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 0);
David Quigleyaa9c2662013-05-22 12:50:44 -04004639 if (ret)
4640 return ret;
4641 if (!(fattr.valid & NFS_ATTR_FATTR_V4_SECURITY_LABEL))
4642 return -ENOENT;
4643 if (buflen < label.len)
4644 return -ERANGE;
4645 return 0;
4646}
4647
4648static int nfs4_get_security_label(struct inode *inode, void *buf,
4649 size_t buflen)
4650{
4651 struct nfs4_exception exception = { };
4652 int err;
4653
4654 if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL))
4655 return -EOPNOTSUPP;
4656
4657 do {
Trond Myklebustc1578b72013-08-12 16:58:42 -04004658 err = _nfs4_get_security_label(inode, buf, buflen);
4659 trace_nfs4_get_security_label(inode, err);
4660 err = nfs4_handle_exception(NFS_SERVER(inode), err,
David Quigleyaa9c2662013-05-22 12:50:44 -04004661 &exception);
4662 } while (exception.retry);
4663 return err;
4664}
4665
4666static int _nfs4_do_set_security_label(struct inode *inode,
4667 struct nfs4_label *ilabel,
4668 struct nfs_fattr *fattr,
4669 struct nfs4_label *olabel)
4670{
4671
4672 struct iattr sattr = {0};
4673 struct nfs_server *server = NFS_SERVER(inode);
4674 const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL };
Jeff Layton12207f62013-11-01 10:49:32 -04004675 struct nfs_setattrargs arg = {
David Quigleyaa9c2662013-05-22 12:50:44 -04004676 .fh = NFS_FH(inode),
4677 .iap = &sattr,
4678 .server = server,
4679 .bitmask = bitmask,
4680 .label = ilabel,
4681 };
4682 struct nfs_setattrres res = {
4683 .fattr = fattr,
4684 .label = olabel,
4685 .server = server,
4686 };
4687 struct rpc_message msg = {
4688 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR],
Jeff Layton12207f62013-11-01 10:49:32 -04004689 .rpc_argp = &arg,
David Quigleyaa9c2662013-05-22 12:50:44 -04004690 .rpc_resp = &res,
4691 };
4692 int status;
4693
Jeff Layton12207f62013-11-01 10:49:32 -04004694 nfs4_stateid_copy(&arg.stateid, &zero_stateid);
David Quigleyaa9c2662013-05-22 12:50:44 -04004695
Jeff Layton12207f62013-11-01 10:49:32 -04004696 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
David Quigleyaa9c2662013-05-22 12:50:44 -04004697 if (status)
4698 dprintk("%s failed: %d\n", __func__, status);
4699
4700 return status;
4701}
4702
4703static int nfs4_do_set_security_label(struct inode *inode,
4704 struct nfs4_label *ilabel,
4705 struct nfs_fattr *fattr,
4706 struct nfs4_label *olabel)
4707{
4708 struct nfs4_exception exception = { };
4709 int err;
4710
4711 do {
Trond Myklebustc1578b72013-08-12 16:58:42 -04004712 err = _nfs4_do_set_security_label(inode, ilabel,
4713 fattr, olabel);
4714 trace_nfs4_set_security_label(inode, err);
4715 err = nfs4_handle_exception(NFS_SERVER(inode), err,
David Quigleyaa9c2662013-05-22 12:50:44 -04004716 &exception);
4717 } while (exception.retry);
4718 return err;
4719}
4720
4721static int
4722nfs4_set_security_label(struct dentry *dentry, const void *buf, size_t buflen)
4723{
4724 struct nfs4_label ilabel, *olabel = NULL;
4725 struct nfs_fattr fattr;
4726 struct rpc_cred *cred;
4727 struct inode *inode = dentry->d_inode;
4728 int status;
4729
4730 if (!nfs_server_capable(inode, NFS_CAP_SECURITY_LABEL))
4731 return -EOPNOTSUPP;
4732
4733 nfs_fattr_init(&fattr);
4734
4735 ilabel.pi = 0;
4736 ilabel.lfs = 0;
4737 ilabel.label = (char *)buf;
4738 ilabel.len = buflen;
4739
4740 cred = rpc_lookup_cred();
4741 if (IS_ERR(cred))
4742 return PTR_ERR(cred);
4743
4744 olabel = nfs4_label_alloc(NFS_SERVER(inode), GFP_KERNEL);
4745 if (IS_ERR(olabel)) {
4746 status = -PTR_ERR(olabel);
4747 goto out;
4748 }
4749
4750 status = nfs4_do_set_security_label(inode, &ilabel, &fattr, olabel);
4751 if (status == 0)
4752 nfs_setsecurity(inode, &fattr, olabel);
4753
4754 nfs4_label_free(olabel);
4755out:
4756 put_rpccred(cred);
4757 return status;
4758}
4759#endif /* CONFIG_NFS_V4_SECURITY_LABEL */
4760
4761
Linus Torvalds1da177e2005-04-16 15:20:36 -07004762static int
Trond Myklebustaa5190d2010-06-16 09:52:25 -04004763nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004764{
Trond Myklebustaa5190d2010-06-16 09:52:25 -04004765 struct nfs_client *clp = server->nfs_client;
4766
4767 if (task->tk_status >= 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004768 return 0;
4769 switch(task->tk_status) {
Trond Myklebusta1d0b5e2012-03-05 19:56:44 -05004770 case -NFS4ERR_DELEG_REVOKED:
Trond Myklebust9e33bed2008-12-23 15:21:46 -05004771 case -NFS4ERR_ADMIN_REVOKED:
4772 case -NFS4ERR_BAD_STATEID:
Trond Myklebust14977482012-03-27 18:31:25 -04004773 if (state == NULL)
4774 break;
4775 nfs_remove_bad_delegation(state->inode);
Trond Myklebust9e33bed2008-12-23 15:21:46 -05004776 case -NFS4ERR_OPENMODE:
4777 if (state == NULL)
4778 break;
Trond Myklebust5d422302013-03-14 16:57:48 -04004779 if (nfs4_schedule_stateid_recovery(server, state) < 0)
Chuck Lever9f51a782013-10-17 14:13:13 -04004780 goto recovery_failed;
Trond Myklebust0400a6b2011-03-09 16:00:53 -05004781 goto wait_on_recovery;
Trond Myklebust0ced63d2011-05-26 14:26:35 -04004782 case -NFS4ERR_EXPIRED:
Trond Myklebust5d422302013-03-14 16:57:48 -04004783 if (state != NULL) {
4784 if (nfs4_schedule_stateid_recovery(server, state) < 0)
Chuck Lever9f51a782013-10-17 14:13:13 -04004785 goto recovery_failed;
Trond Myklebust5d422302013-03-14 16:57:48 -04004786 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07004787 case -NFS4ERR_STALE_STATEID:
Trond Myklebusta2c0b9e2010-01-26 15:42:47 -05004788 case -NFS4ERR_STALE_CLIENTID:
Trond Myklebust0400a6b2011-03-09 16:00:53 -05004789 nfs4_schedule_lease_recovery(clp);
4790 goto wait_on_recovery;
Chuck Lever519ae252013-10-17 14:13:19 -04004791 case -NFS4ERR_MOVED:
4792 if (nfs4_schedule_migration_recovery(server) < 0)
4793 goto recovery_failed;
4794 goto wait_on_recovery;
Chuck Lever8ef2f8d2013-10-17 14:13:41 -04004795 case -NFS4ERR_LEASE_MOVED:
4796 nfs4_schedule_lease_moved_recovery(clp);
4797 goto wait_on_recovery;
Andy Adamson4745e312009-04-01 09:22:42 -04004798#if defined(CONFIG_NFS_V4_1)
4799 case -NFS4ERR_BADSESSION:
4800 case -NFS4ERR_BADSLOT:
4801 case -NFS4ERR_BAD_HIGH_SLOT:
4802 case -NFS4ERR_DEADSESSION:
4803 case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION:
4804 case -NFS4ERR_SEQ_FALSE_RETRY:
4805 case -NFS4ERR_SEQ_MISORDERED:
4806 dprintk("%s ERROR %d, Reset session\n", __func__,
4807 task->tk_status);
Trond Myklebust9f594792012-05-27 13:02:53 -04004808 nfs4_schedule_session_recovery(clp->cl_session, task->tk_status);
Andy Adamson4a82fd72013-11-15 16:36:16 -05004809 goto wait_on_recovery;
Andy Adamson4745e312009-04-01 09:22:42 -04004810#endif /* CONFIG_NFS_V4_1 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07004811 case -NFS4ERR_DELAY:
Trond Myklebustaa5190d2010-06-16 09:52:25 -04004812 nfs_inc_server_stats(server, NFSIOS_DELAY);
Chuck Lever006ea732006-03-20 13:44:14 -05004813 case -NFS4ERR_GRACE:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004814 rpc_delay(task, NFS4_POLL_RETRY_MAX);
Andy Adamsona8a4ae32011-05-03 13:43:03 -04004815 case -NFS4ERR_RETRY_UNCACHED_REP:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004816 case -NFS4ERR_OLD_STATEID:
Chuck Leverf1478c12013-10-17 14:13:07 -04004817 goto restart_call;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004818 }
4819 task->tk_status = nfs4_map_errors(task->tk_status);
4820 return 0;
Chuck Lever9f51a782013-10-17 14:13:13 -04004821recovery_failed:
Trond Myklebust5d422302013-03-14 16:57:48 -04004822 task->tk_status = -EIO;
4823 return 0;
Trond Myklebust0400a6b2011-03-09 16:00:53 -05004824wait_on_recovery:
Trond Myklebusta2c0b9e2010-01-26 15:42:47 -05004825 rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
Trond Myklebusta2c0b9e2010-01-26 15:42:47 -05004826 if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
4827 rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
Chuck Lever519ae252013-10-17 14:13:19 -04004828 if (test_bit(NFS_MIG_FAILED, &server->mig_status))
4829 goto recovery_failed;
Chuck Leverf1478c12013-10-17 14:13:07 -04004830restart_call:
Trond Myklebusta2c0b9e2010-01-26 15:42:47 -05004831 task->tk_status = 0;
4832 return -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004833}
4834
Chuck Leverf0920752012-05-21 22:45:41 -04004835static void nfs4_init_boot_verifier(const struct nfs_client *clp,
4836 nfs4_verifier *bootverf)
Chuck Levercd937102012-03-02 17:14:31 -05004837{
4838 __be32 verf[2];
4839
Chuck Lever2c820d92012-05-21 22:45:33 -04004840 if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) {
4841 /* An impossible timestamp guarantees this value
4842 * will never match a generated boot time. */
4843 verf[0] = 0;
Trond Myklebust17f26b12013-08-21 15:48:42 -04004844 verf[1] = cpu_to_be32(NSEC_PER_SEC + 1);
Chuck Lever2c820d92012-05-21 22:45:33 -04004845 } else {
Chuck Leverf0920752012-05-21 22:45:41 -04004846 struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id);
Trond Myklebust17f26b12013-08-21 15:48:42 -04004847 verf[0] = cpu_to_be32(nn->boot_time.tv_sec);
4848 verf[1] = cpu_to_be32(nn->boot_time.tv_nsec);
Chuck Lever2c820d92012-05-21 22:45:33 -04004849 }
Chuck Levercd937102012-03-02 17:14:31 -05004850 memcpy(bootverf->data, verf, sizeof(bootverf->data));
4851}
4852
Chuck Levere984a552012-09-14 17:24:21 -04004853static unsigned int
4854nfs4_init_nonuniform_client_string(const struct nfs_client *clp,
4855 char *buf, size_t len)
4856{
4857 unsigned int result;
4858
4859 rcu_read_lock();
4860 result = scnprintf(buf, len, "Linux NFSv4.0 %s/%s %s",
4861 clp->cl_ipaddr,
4862 rpc_peeraddr2str(clp->cl_rpcclient,
4863 RPC_DISPLAY_ADDR),
4864 rpc_peeraddr2str(clp->cl_rpcclient,
4865 RPC_DISPLAY_PROTO));
4866 rcu_read_unlock();
4867 return result;
4868}
4869
4870static unsigned int
4871nfs4_init_uniform_client_string(const struct nfs_client *clp,
4872 char *buf, size_t len)
4873{
Trond Myklebust55b59292013-07-24 16:36:35 -04004874 const char *nodename = clp->cl_rpcclient->cl_nodename;
Chuck Lever6f2ea7f2012-09-14 17:24:41 -04004875
4876 if (nfs4_client_id_uniquifier[0] != '\0')
Trond Myklebust55b59292013-07-24 16:36:35 -04004877 return scnprintf(buf, len, "Linux NFSv%u.%u %s/%s",
4878 clp->rpc_ops->version,
4879 clp->cl_minorversion,
4880 nfs4_client_id_uniquifier,
4881 nodename);
Chuck Levere984a552012-09-14 17:24:21 -04004882 return scnprintf(buf, len, "Linux NFSv%u.%u %s",
4883 clp->rpc_ops->version, clp->cl_minorversion,
Chuck Lever6f2ea7f2012-09-14 17:24:41 -04004884 nodename);
Chuck Levere984a552012-09-14 17:24:21 -04004885}
4886
Chuck Lever6bbb4ae2012-07-11 16:30:59 -04004887/**
4888 * nfs4_proc_setclientid - Negotiate client ID
4889 * @clp: state data structure
4890 * @program: RPC program for NFSv4 callback service
4891 * @port: IP port number for NFS4 callback service
4892 * @cred: RPC credential to use for this call
4893 * @res: where to place the result
4894 *
4895 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4896 */
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04004897int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
4898 unsigned short port, struct rpc_cred *cred,
4899 struct nfs4_setclientid_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004900{
4901 nfs4_verifier sc_verifier;
4902 struct nfs4_setclientid setclientid = {
4903 .sc_verifier = &sc_verifier,
4904 .sc_prog = program,
Andy Adamsonf4eecd52011-01-06 02:04:30 +00004905 .sc_cb_ident = clp->cl_cb_ident,
Linus Torvalds1da177e2005-04-16 15:20:36 -07004906 };
4907 struct rpc_message msg = {
4908 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID],
4909 .rpc_argp = &setclientid,
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04004910 .rpc_resp = res,
Trond Myklebust286d7d62006-01-03 09:55:26 +01004911 .rpc_cred = cred,
Linus Torvalds1da177e2005-04-16 15:20:36 -07004912 };
Chuck Lever6bbb4ae2012-07-11 16:30:59 -04004913 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004914
Chuck Leverde734832012-07-11 16:30:50 -04004915 /* nfs_client_id4 */
Chuck Leverf0920752012-05-21 22:45:41 -04004916 nfs4_init_boot_verifier(clp, &sc_verifier);
Chuck Levere984a552012-09-14 17:24:21 -04004917 if (test_bit(NFS_CS_MIGRATION, &clp->cl_flags))
4918 setclientid.sc_name_len =
4919 nfs4_init_uniform_client_string(clp,
4920 setclientid.sc_name,
4921 sizeof(setclientid.sc_name));
4922 else
4923 setclientid.sc_name_len =
4924 nfs4_init_nonuniform_client_string(clp,
4925 setclientid.sc_name,
4926 sizeof(setclientid.sc_name));
Chuck Leverde734832012-07-11 16:30:50 -04004927 /* cb_client4 */
Chuck Levere984a552012-09-14 17:24:21 -04004928 rcu_read_lock();
Chuck Leverde734832012-07-11 16:30:50 -04004929 setclientid.sc_netid_len = scnprintf(setclientid.sc_netid,
Djalal Harounife2d5392013-06-18 17:58:12 +01004930 sizeof(setclientid.sc_netid), "%s",
Chuck Leverd4d3c502007-12-10 14:57:09 -05004931 rpc_peeraddr2str(clp->cl_rpcclient,
4932 RPC_DISPLAY_NETID));
Chuck Leverde734832012-07-11 16:30:50 -04004933 rcu_read_unlock();
4934 setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr,
Chuck Leverd4d3c502007-12-10 14:57:09 -05004935 sizeof(setclientid.sc_uaddr), "%s.%u.%u",
Linus Torvalds1da177e2005-04-16 15:20:36 -07004936 clp->cl_ipaddr, port >> 8, port & 255);
4937
Chuck Lever6bbb4ae2012-07-11 16:30:59 -04004938 dprintk("NFS call setclientid auth=%s, '%.*s'\n",
4939 clp->cl_rpcclient->cl_auth->au_ops->au_name,
4940 setclientid.sc_name_len, setclientid.sc_name);
4941 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
Trond Myklebustc6d01c62013-08-09 11:51:26 -04004942 trace_nfs4_setclientid(clp, status);
Chuck Lever6bbb4ae2012-07-11 16:30:59 -04004943 dprintk("NFS reply setclientid: %d\n", status);
4944 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004945}
4946
Chuck Lever6bbb4ae2012-07-11 16:30:59 -04004947/**
4948 * nfs4_proc_setclientid_confirm - Confirm client ID
4949 * @clp: state data structure
4950 * @res: result of a previous SETCLIENTID
4951 * @cred: RPC credential to use for this call
4952 *
4953 * Returns zero, a negative errno, or a negative NFS4ERR status code.
4954 */
Trond Myklebustfd954ae2011-04-24 14:28:18 -04004955int nfs4_proc_setclientid_confirm(struct nfs_client *clp,
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04004956 struct nfs4_setclientid_res *arg,
4957 struct rpc_cred *cred)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004958{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004959 struct rpc_message msg = {
4960 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETCLIENTID_CONFIRM],
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04004961 .rpc_argp = arg,
Trond Myklebust286d7d62006-01-03 09:55:26 +01004962 .rpc_cred = cred,
Linus Torvalds1da177e2005-04-16 15:20:36 -07004963 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07004964 int status;
4965
Chuck Lever6bbb4ae2012-07-11 16:30:59 -04004966 dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
4967 clp->cl_rpcclient->cl_auth->au_ops->au_name,
4968 clp->cl_clientid);
Trond Myklebust1bd714f2011-04-24 14:29:33 -04004969 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
Trond Myklebustc6d01c62013-08-09 11:51:26 -04004970 trace_nfs4_setclientid_confirm(clp, status);
Chuck Lever6bbb4ae2012-07-11 16:30:59 -04004971 dprintk("NFS reply setclientid_confirm: %d\n", status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004972 return status;
4973}
4974
Trond Myklebustfe650402006-01-03 09:55:18 +01004975struct nfs4_delegreturndata {
4976 struct nfs4_delegreturnargs args;
Trond Myklebustfa178f22006-01-03 09:55:38 +01004977 struct nfs4_delegreturnres res;
Trond Myklebustfe650402006-01-03 09:55:18 +01004978 struct nfs_fh fh;
4979 nfs4_stateid stateid;
Trond Myklebust26e976a2006-01-03 09:55:21 +01004980 unsigned long timestamp;
Trond Myklebustfa178f22006-01-03 09:55:38 +01004981 struct nfs_fattr fattr;
Trond Myklebustfe650402006-01-03 09:55:18 +01004982 int rpc_status;
4983};
4984
Trond Myklebustfe650402006-01-03 09:55:18 +01004985static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
4986{
4987 struct nfs4_delegreturndata *data = calldata;
Andy Adamson938e1012009-04-01 09:22:28 -04004988
Trond Myklebust14516c32010-07-31 14:29:06 -04004989 if (!nfs4_sequence_done(task, &data->res.seq_res))
4990 return;
Andy Adamson938e1012009-04-01 09:22:28 -04004991
Trond Myklebustca8acf82013-08-13 10:36:56 -04004992 trace_nfs4_delegreturn_exit(&data->args, &data->res, task->tk_status);
Ricardo Labiaga79708862009-12-07 09:23:21 -05004993 switch (task->tk_status) {
Ricardo Labiaga79708862009-12-07 09:23:21 -05004994 case 0:
Trond Myklebustfa178f22006-01-03 09:55:38 +01004995 renew_lease(data->res.server, data->timestamp);
Ricardo Labiaga79708862009-12-07 09:23:21 -05004996 break;
Trond Myklebustc97cf602013-11-19 16:34:14 -05004997 case -NFS4ERR_ADMIN_REVOKED:
4998 case -NFS4ERR_DELEG_REVOKED:
4999 case -NFS4ERR_BAD_STATEID:
5000 case -NFS4ERR_OLD_STATEID:
5001 case -NFS4ERR_STALE_STATEID:
5002 case -NFS4ERR_EXPIRED:
5003 task->tk_status = 0;
5004 break;
Ricardo Labiaga79708862009-12-07 09:23:21 -05005005 default:
5006 if (nfs4_async_handle_error(task, data->res.server, NULL) ==
5007 -EAGAIN) {
Trond Myklebustd00c5d42011-10-19 12:17:29 -07005008 rpc_restart_call_prepare(task);
Ricardo Labiaga79708862009-12-07 09:23:21 -05005009 return;
5010 }
5011 }
5012 data->rpc_status = task->tk_status;
Trond Myklebustfe650402006-01-03 09:55:18 +01005013}
5014
5015static void nfs4_delegreturn_release(void *calldata)
5016{
Trond Myklebustfe650402006-01-03 09:55:18 +01005017 kfree(calldata);
5018}
5019
Andy Adamson938e1012009-04-01 09:22:28 -04005020static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data)
5021{
5022 struct nfs4_delegreturndata *d_data;
5023
5024 d_data = (struct nfs4_delegreturndata *)data;
5025
Trond Myklebustd9afbd12012-10-22 20:28:44 -04005026 nfs4_setup_sequence(d_data->res.server,
5027 &d_data->args.seq_args,
5028 &d_data->res.seq_res,
5029 task);
Andy Adamson938e1012009-04-01 09:22:28 -04005030}
Andy Adamson938e1012009-04-01 09:22:28 -04005031
Jesper Juhlc8d149f2006-03-20 13:44:07 -05005032static const struct rpc_call_ops nfs4_delegreturn_ops = {
Andy Adamson938e1012009-04-01 09:22:28 -04005033 .rpc_call_prepare = nfs4_delegreturn_prepare,
Trond Myklebustfe650402006-01-03 09:55:18 +01005034 .rpc_call_done = nfs4_delegreturn_done,
5035 .rpc_release = nfs4_delegreturn_release,
5036};
5037
Trond Myklebuste6f81072008-01-24 18:14:34 -05005038static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
Trond Myklebustfe650402006-01-03 09:55:18 +01005039{
5040 struct nfs4_delegreturndata *data;
Trond Myklebustfa178f22006-01-03 09:55:38 +01005041 struct nfs_server *server = NFS_SERVER(inode);
Trond Myklebustfe650402006-01-03 09:55:18 +01005042 struct rpc_task *task;
Trond Myklebust5138fde2007-07-14 15:40:01 -04005043 struct rpc_message msg = {
5044 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN],
5045 .rpc_cred = cred,
5046 };
Trond Myklebustc970aa82007-07-14 15:39:59 -04005047 struct rpc_task_setup task_setup_data = {
5048 .rpc_client = server->client,
Trond Myklebust5138fde2007-07-14 15:40:01 -04005049 .rpc_message = &msg,
Trond Myklebustc970aa82007-07-14 15:39:59 -04005050 .callback_ops = &nfs4_delegreturn_ops,
5051 .flags = RPC_TASK_ASYNC,
5052 };
Trond Myklebuste6f81072008-01-24 18:14:34 -05005053 int status = 0;
Trond Myklebustfe650402006-01-03 09:55:18 +01005054
Trond Myklebust8535b2b2010-05-13 12:51:01 -04005055 data = kzalloc(sizeof(*data), GFP_NOFS);
Trond Myklebustfe650402006-01-03 09:55:18 +01005056 if (data == NULL)
5057 return -ENOMEM;
Chuck Levera9c92d62013-08-09 12:48:18 -04005058 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
Trond Myklebustfe650402006-01-03 09:55:18 +01005059 data->args.fhandle = &data->fh;
5060 data->args.stateid = &data->stateid;
Trond Myklebust9e907fe2012-04-27 13:48:17 -04005061 data->args.bitmask = server->cache_consistency_bitmask;
Trond Myklebustfe650402006-01-03 09:55:18 +01005062 nfs_copy_fh(&data->fh, NFS_FH(inode));
Trond Myklebustf597c532012-03-04 18:13:56 -05005063 nfs4_stateid_copy(&data->stateid, stateid);
Trond Myklebustfa178f22006-01-03 09:55:38 +01005064 data->res.fattr = &data->fattr;
5065 data->res.server = server;
Trond Myklebust5138fde2007-07-14 15:40:01 -04005066 nfs_fattr_init(data->res.fattr);
Trond Myklebust26e976a2006-01-03 09:55:21 +01005067 data->timestamp = jiffies;
Trond Myklebustfe650402006-01-03 09:55:18 +01005068 data->rpc_status = 0;
5069
Trond Myklebustc970aa82007-07-14 15:39:59 -04005070 task_setup_data.callback_data = data;
Trond Myklebust1174dd12010-12-21 10:52:24 -05005071 msg.rpc_argp = &data->args;
5072 msg.rpc_resp = &data->res;
Trond Myklebustc970aa82007-07-14 15:39:59 -04005073 task = rpc_run_task(&task_setup_data);
Trond Myklebust7a1218a2006-03-20 18:11:10 -05005074 if (IS_ERR(task))
Trond Myklebustfe650402006-01-03 09:55:18 +01005075 return PTR_ERR(task);
Trond Myklebuste6f81072008-01-24 18:14:34 -05005076 if (!issync)
5077 goto out;
Trond Myklebustfe650402006-01-03 09:55:18 +01005078 status = nfs4_wait_for_completion_rpc_task(task);
Trond Myklebuste6f81072008-01-24 18:14:34 -05005079 if (status != 0)
5080 goto out;
5081 status = data->rpc_status;
Trond Myklebuste144cbc2012-04-28 16:05:03 -04005082 if (status == 0)
5083 nfs_post_op_update_inode_force_wcc(inode, &data->fattr);
5084 else
5085 nfs_refresh_inode(inode, &data->fattr);
Trond Myklebuste6f81072008-01-24 18:14:34 -05005086out:
Trond Myklebuste6b3c4d2006-11-11 22:18:03 -05005087 rpc_put_task(task);
Trond Myklebustfe650402006-01-03 09:55:18 +01005088 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005089}
5090
Trond Myklebuste6f81072008-01-24 18:14:34 -05005091int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005092{
5093 struct nfs_server *server = NFS_SERVER(inode);
5094 struct nfs4_exception exception = { };
5095 int err;
5096 do {
Trond Myklebuste6f81072008-01-24 18:14:34 -05005097 err = _nfs4_proc_delegreturn(inode, cred, stateid, issync);
Trond Myklebustca8acf82013-08-13 10:36:56 -04005098 trace_nfs4_delegreturn(inode, err);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005099 switch (err) {
5100 case -NFS4ERR_STALE_STATEID:
5101 case -NFS4ERR_EXPIRED:
Linus Torvalds1da177e2005-04-16 15:20:36 -07005102 case 0:
5103 return 0;
5104 }
5105 err = nfs4_handle_exception(server, err, &exception);
5106 } while (exception.retry);
5107 return err;
5108}
5109
5110#define NFS4_LOCK_MINTIMEOUT (1 * HZ)
5111#define NFS4_LOCK_MAXTIMEOUT (30 * HZ)
5112
5113/*
5114 * sleep, with exponential backoff, and retry the LOCK operation.
5115 */
5116static unsigned long
5117nfs4_set_lock_task_retry(unsigned long timeout)
5118{
Colin Cross416ad3c2013-05-06 23:50:06 +00005119 freezable_schedule_timeout_killable_unsafe(timeout);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005120 timeout <<= 1;
5121 if (timeout > NFS4_LOCK_MAXTIMEOUT)
5122 return NFS4_LOCK_MAXTIMEOUT;
5123 return timeout;
5124}
5125
Linus Torvalds1da177e2005-04-16 15:20:36 -07005126static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
5127{
5128 struct inode *inode = state->inode;
5129 struct nfs_server *server = NFS_SERVER(inode);
David Howells7539bba2006-08-22 20:06:09 -04005130 struct nfs_client *clp = server->nfs_client;
Trond Myklebust911d1aa2006-01-03 09:55:16 +01005131 struct nfs_lockt_args arg = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07005132 .fh = NFS_FH(inode),
Trond Myklebust911d1aa2006-01-03 09:55:16 +01005133 .fl = request,
Linus Torvalds1da177e2005-04-16 15:20:36 -07005134 };
Trond Myklebust911d1aa2006-01-03 09:55:16 +01005135 struct nfs_lockt_res res = {
5136 .denied = request,
Linus Torvalds1da177e2005-04-16 15:20:36 -07005137 };
5138 struct rpc_message msg = {
5139 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT],
5140 .rpc_argp = &arg,
5141 .rpc_resp = &res,
5142 .rpc_cred = state->owner->so_cred,
5143 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07005144 struct nfs4_lock_state *lsp;
5145 int status;
5146
Trond Myklebust911d1aa2006-01-03 09:55:16 +01005147 arg.lock_owner.clientid = clp->cl_clientid;
Trond Myklebust8d0a8a92005-06-22 17:16:32 +00005148 status = nfs4_set_lock_state(state, request);
5149 if (status != 0)
5150 goto out;
5151 lsp = request->fl_u.nfs4_fl.owner;
Trond Myklebust48c22eb2012-01-17 22:04:25 -05005152 arg.lock_owner.id = lsp->ls_seqid.owner_id;
Trond Myklebustd035c362010-12-21 10:45:27 -05005153 arg.lock_owner.s_dev = server->s_dev;
Bryan Schumaker7c513052011-03-24 17:12:24 +00005154 status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
Trond Myklebust911d1aa2006-01-03 09:55:16 +01005155 switch (status) {
5156 case 0:
5157 request->fl_type = F_UNLCK;
5158 break;
5159 case -NFS4ERR_DENIED:
5160 status = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005161 }
J. Bruce Fields70cc6482007-02-22 18:48:53 -05005162 request->fl_ops->fl_release_private(request);
Trond Myklebusta6f951d2013-10-01 14:24:58 -04005163 request->fl_ops = NULL;
Trond Myklebust8d0a8a92005-06-22 17:16:32 +00005164out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07005165 return status;
5166}
5167
5168static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request)
5169{
5170 struct nfs4_exception exception = { };
5171 int err;
5172
5173 do {
Trond Myklebustd1b748a2013-08-12 16:35:20 -04005174 err = _nfs4_proc_getlk(state, cmd, request);
5175 trace_nfs4_get_lock(request, state, cmd, err);
5176 err = nfs4_handle_exception(NFS_SERVER(state->inode), err,
Linus Torvalds1da177e2005-04-16 15:20:36 -07005177 &exception);
5178 } while (exception.retry);
5179 return err;
5180}
5181
5182static int do_vfs_lock(struct file *file, struct file_lock *fl)
5183{
5184 int res = 0;
5185 switch (fl->fl_flags & (FL_POSIX|FL_FLOCK)) {
5186 case FL_POSIX:
5187 res = posix_lock_file_wait(file, fl);
5188 break;
5189 case FL_FLOCK:
5190 res = flock_lock_file_wait(file, fl);
5191 break;
5192 default:
5193 BUG();
5194 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07005195 return res;
5196}
5197
Trond Myklebustfaf5f492005-10-18 14:20:15 -07005198struct nfs4_unlockdata {
Trond Myklebust911d1aa2006-01-03 09:55:16 +01005199 struct nfs_locku_args arg;
5200 struct nfs_locku_res res;
Trond Myklebustfaf5f492005-10-18 14:20:15 -07005201 struct nfs4_lock_state *lsp;
5202 struct nfs_open_context *ctx;
Trond Myklebust911d1aa2006-01-03 09:55:16 +01005203 struct file_lock fl;
5204 const struct nfs_server *server;
Trond Myklebust26e976a2006-01-03 09:55:21 +01005205 unsigned long timestamp;
Trond Myklebustfaf5f492005-10-18 14:20:15 -07005206};
5207
Trond Myklebust911d1aa2006-01-03 09:55:16 +01005208static struct nfs4_unlockdata *nfs4_alloc_unlockdata(struct file_lock *fl,
5209 struct nfs_open_context *ctx,
5210 struct nfs4_lock_state *lsp,
5211 struct nfs_seqid *seqid)
5212{
5213 struct nfs4_unlockdata *p;
5214 struct inode *inode = lsp->ls_state->inode;
5215
Trond Myklebust8535b2b2010-05-13 12:51:01 -04005216 p = kzalloc(sizeof(*p), GFP_NOFS);
Trond Myklebust911d1aa2006-01-03 09:55:16 +01005217 if (p == NULL)
5218 return NULL;
5219 p->arg.fh = NFS_FH(inode);
5220 p->arg.fl = &p->fl;
5221 p->arg.seqid = seqid;
Trond Myklebustc1d51932008-04-07 13:20:54 -04005222 p->res.seqid = seqid;
Trond Myklebust911d1aa2006-01-03 09:55:16 +01005223 p->arg.stateid = &lsp->ls_stateid;
5224 p->lsp = lsp;
5225 atomic_inc(&lsp->ls_count);
5226 /* Ensure we don't close file until we're done freeing locks! */
5227 p->ctx = get_nfs_open_context(ctx);
5228 memcpy(&p->fl, fl, sizeof(p->fl));
5229 p->server = NFS_SERVER(inode);
5230 return p;
5231}
5232
Trond Myklebust06f814a2006-01-03 09:55:07 +01005233static void nfs4_locku_release_calldata(void *data)
Trond Myklebustfaf5f492005-10-18 14:20:15 -07005234{
Trond Myklebust963d8fe2006-01-03 09:55:04 +01005235 struct nfs4_unlockdata *calldata = data;
Trond Myklebust911d1aa2006-01-03 09:55:16 +01005236 nfs_free_seqid(calldata->arg.seqid);
Trond Myklebust06f814a2006-01-03 09:55:07 +01005237 nfs4_put_lock_state(calldata->lsp);
5238 put_nfs_open_context(calldata->ctx);
5239 kfree(calldata);
Trond Myklebustfaf5f492005-10-18 14:20:15 -07005240}
5241
Trond Myklebust963d8fe2006-01-03 09:55:04 +01005242static void nfs4_locku_done(struct rpc_task *task, void *data)
Trond Myklebustfaf5f492005-10-18 14:20:15 -07005243{
Trond Myklebust963d8fe2006-01-03 09:55:04 +01005244 struct nfs4_unlockdata *calldata = data;
Trond Myklebustfaf5f492005-10-18 14:20:15 -07005245
Trond Myklebust14516c32010-07-31 14:29:06 -04005246 if (!nfs4_sequence_done(task, &calldata->res.seq_res))
5247 return;
Trond Myklebustfaf5f492005-10-18 14:20:15 -07005248 switch (task->tk_status) {
5249 case 0:
Trond Myklebustf597c532012-03-04 18:13:56 -05005250 nfs4_stateid_copy(&calldata->lsp->ls_stateid,
5251 &calldata->res.stateid);
Trond Myklebust26e976a2006-01-03 09:55:21 +01005252 renew_lease(calldata->server, calldata->timestamp);
Trond Myklebustfaf5f492005-10-18 14:20:15 -07005253 break;
Trond Myklebust9e33bed2008-12-23 15:21:46 -05005254 case -NFS4ERR_BAD_STATEID:
5255 case -NFS4ERR_OLD_STATEID:
Trond Myklebustfaf5f492005-10-18 14:20:15 -07005256 case -NFS4ERR_STALE_STATEID:
5257 case -NFS4ERR_EXPIRED:
Trond Myklebustfaf5f492005-10-18 14:20:15 -07005258 break;
5259 default:
Trond Myklebust9e33bed2008-12-23 15:21:46 -05005260 if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN)
Trond Myklebustd00c5d42011-10-19 12:17:29 -07005261 rpc_restart_call_prepare(task);
Trond Myklebustfaf5f492005-10-18 14:20:15 -07005262 }
Trond Myklebust2b1bc302012-10-29 18:53:23 -04005263 nfs_release_seqid(calldata->arg.seqid);
Trond Myklebustfaf5f492005-10-18 14:20:15 -07005264}
5265
Trond Myklebust4ce70ad2006-01-03 09:55:05 +01005266static void nfs4_locku_prepare(struct rpc_task *task, void *data)
Trond Myklebustfaf5f492005-10-18 14:20:15 -07005267{
Trond Myklebust4ce70ad2006-01-03 09:55:05 +01005268 struct nfs4_unlockdata *calldata = data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005269
Trond Myklebust911d1aa2006-01-03 09:55:16 +01005270 if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
Trond Myklebustc8da19b2013-02-11 19:01:21 -05005271 goto out_wait;
Trond Myklebust795a88c2012-09-10 13:26:49 -04005272 if (test_bit(NFS_LOCK_INITIALIZED, &calldata->lsp->ls_flags) == 0) {
Trond Myklebust963d8fe2006-01-03 09:55:04 +01005273 /* Note: exit _without_ running nfs4_locku_done */
Trond Myklebustc8da19b2013-02-11 19:01:21 -05005274 goto out_no_action;
Trond Myklebustfaf5f492005-10-18 14:20:15 -07005275 }
Trond Myklebust26e976a2006-01-03 09:55:21 +01005276 calldata->timestamp = jiffies;
Trond Myklebust035168a2010-06-16 09:52:26 -04005277 if (nfs4_setup_sequence(calldata->server,
Andy Adamsona8936932009-04-01 09:22:23 -04005278 &calldata->arg.seq_args,
Trond Myklebust2240a9e2012-10-29 18:37:40 -04005279 &calldata->res.seq_res,
5280 task) != 0)
5281 nfs_release_seqid(calldata->arg.seqid);
Trond Myklebustc8da19b2013-02-11 19:01:21 -05005282 return;
5283out_no_action:
5284 task->tk_action = NULL;
5285out_wait:
5286 nfs4_sequence_done(task, &calldata->res.seq_res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005287}
5288
Trond Myklebust963d8fe2006-01-03 09:55:04 +01005289static const struct rpc_call_ops nfs4_locku_ops = {
Trond Myklebust4ce70ad2006-01-03 09:55:05 +01005290 .rpc_call_prepare = nfs4_locku_prepare,
Trond Myklebust963d8fe2006-01-03 09:55:04 +01005291 .rpc_call_done = nfs4_locku_done,
Trond Myklebust06f814a2006-01-03 09:55:07 +01005292 .rpc_release = nfs4_locku_release_calldata,
Trond Myklebust963d8fe2006-01-03 09:55:04 +01005293};
5294
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005295static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
5296 struct nfs_open_context *ctx,
5297 struct nfs4_lock_state *lsp,
5298 struct nfs_seqid *seqid)
5299{
5300 struct nfs4_unlockdata *data;
Trond Myklebust5138fde2007-07-14 15:40:01 -04005301 struct rpc_message msg = {
5302 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU],
5303 .rpc_cred = ctx->cred,
5304 };
Trond Myklebustc970aa82007-07-14 15:39:59 -04005305 struct rpc_task_setup task_setup_data = {
5306 .rpc_client = NFS_CLIENT(lsp->ls_state->inode),
Trond Myklebust5138fde2007-07-14 15:40:01 -04005307 .rpc_message = &msg,
Trond Myklebustc970aa82007-07-14 15:39:59 -04005308 .callback_ops = &nfs4_locku_ops,
Trond Myklebust101070c2008-02-19 20:04:23 -05005309 .workqueue = nfsiod_workqueue,
Trond Myklebustc970aa82007-07-14 15:39:59 -04005310 .flags = RPC_TASK_ASYNC,
5311 };
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005312
Weston Andros Adamsonfa940722013-08-13 16:37:34 -04005313 nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client,
5314 NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg);
5315
Frank Filz137d6ac2007-07-09 15:32:29 -07005316 /* Ensure this is an unlock - when canceling a lock, the
5317 * canceled lock is passed in, and it won't be an unlock.
5318 */
5319 fl->fl_type = F_UNLCK;
5320
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005321 data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid);
5322 if (data == NULL) {
5323 nfs_free_seqid(seqid);
5324 return ERR_PTR(-ENOMEM);
5325 }
5326
Chuck Levera9c92d62013-08-09 12:48:18 -04005327 nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1);
Trond Myklebust1174dd12010-12-21 10:52:24 -05005328 msg.rpc_argp = &data->arg;
5329 msg.rpc_resp = &data->res;
Trond Myklebustc970aa82007-07-14 15:39:59 -04005330 task_setup_data.callback_data = data;
5331 return rpc_run_task(&task_setup_data);
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005332}
5333
Linus Torvalds1da177e2005-04-16 15:20:36 -07005334static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
5335{
Trond Myklebust65b62a22013-02-07 10:54:07 -05005336 struct inode *inode = state->inode;
5337 struct nfs4_state_owner *sp = state->owner;
5338 struct nfs_inode *nfsi = NFS_I(inode);
Trond Myklebust911d1aa2006-01-03 09:55:16 +01005339 struct nfs_seqid *seqid;
Trond Myklebustfaf5f492005-10-18 14:20:15 -07005340 struct nfs4_lock_state *lsp;
Trond Myklebust06f814a2006-01-03 09:55:07 +01005341 struct rpc_task *task;
5342 int status = 0;
Trond Myklebust536ff0f2008-04-04 15:08:02 -04005343 unsigned char fl_flags = request->fl_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005344
Trond Myklebust9b073572006-06-29 16:38:34 -04005345 status = nfs4_set_lock_state(state, request);
5346 /* Unlock _before_ we do the RPC call */
5347 request->fl_flags |= FL_EXISTS;
Trond Myklebust65b62a22013-02-07 10:54:07 -05005348 /* Exclude nfs_delegation_claim_locks() */
5349 mutex_lock(&sp->so_delegreturn_mutex);
5350 /* Exclude nfs4_reclaim_open_stateid() - note nesting! */
Trond Myklebust19e03c52008-12-23 15:21:44 -05005351 down_read(&nfsi->rwsem);
5352 if (do_vfs_lock(request->fl_file, request) == -ENOENT) {
5353 up_read(&nfsi->rwsem);
Trond Myklebust65b62a22013-02-07 10:54:07 -05005354 mutex_unlock(&sp->so_delegreturn_mutex);
Trond Myklebust9b073572006-06-29 16:38:34 -04005355 goto out;
Trond Myklebust19e03c52008-12-23 15:21:44 -05005356 }
5357 up_read(&nfsi->rwsem);
Trond Myklebust65b62a22013-02-07 10:54:07 -05005358 mutex_unlock(&sp->so_delegreturn_mutex);
Trond Myklebust9b073572006-06-29 16:38:34 -04005359 if (status != 0)
5360 goto out;
Trond Myklebust6bfc93e2005-11-04 15:39:36 -05005361 /* Is this a delegated lock? */
Trond Myklebustfaf5f492005-10-18 14:20:15 -07005362 lsp = request->fl_u.nfs4_fl.owner;
Trond Myklebustc5a2a152013-04-30 12:43:42 -04005363 if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) == 0)
5364 goto out;
Trond Myklebust8535b2b2010-05-13 12:51:01 -04005365 seqid = nfs_alloc_seqid(&lsp->ls_seqid, GFP_KERNEL);
Trond Myklebust9b073572006-06-29 16:38:34 -04005366 status = -ENOMEM;
Trond Myklebust911d1aa2006-01-03 09:55:16 +01005367 if (seqid == NULL)
Trond Myklebust9b073572006-06-29 16:38:34 -04005368 goto out;
Trond Myklebustcd3758e2007-08-10 17:44:32 -04005369 task = nfs4_do_unlck(request, nfs_file_open_context(request->fl_file), lsp, seqid);
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005370 status = PTR_ERR(task);
5371 if (IS_ERR(task))
Trond Myklebust9b073572006-06-29 16:38:34 -04005372 goto out;
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005373 status = nfs4_wait_for_completion_rpc_task(task);
Trond Myklebuste6b3c4d2006-11-11 22:18:03 -05005374 rpc_put_task(task);
Trond Myklebust9b073572006-06-29 16:38:34 -04005375out:
Trond Myklebust536ff0f2008-04-04 15:08:02 -04005376 request->fl_flags = fl_flags;
Trond Myklebustd1b748a2013-08-12 16:35:20 -04005377 trace_nfs4_unlock(request, state, F_SETLK, status);
Trond Myklebustfaf5f492005-10-18 14:20:15 -07005378 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005379}
5380
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005381struct nfs4_lockdata {
5382 struct nfs_lock_args arg;
Trond Myklebust911d1aa2006-01-03 09:55:16 +01005383 struct nfs_lock_res res;
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005384 struct nfs4_lock_state *lsp;
5385 struct nfs_open_context *ctx;
5386 struct file_lock fl;
Trond Myklebust26e976a2006-01-03 09:55:21 +01005387 unsigned long timestamp;
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005388 int rpc_status;
5389 int cancelled;
Andy Adamson66179ef2009-04-01 09:22:22 -04005390 struct nfs_server *server;
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005391};
5392
5393static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
Trond Myklebust8535b2b2010-05-13 12:51:01 -04005394 struct nfs_open_context *ctx, struct nfs4_lock_state *lsp,
5395 gfp_t gfp_mask)
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005396{
5397 struct nfs4_lockdata *p;
5398 struct inode *inode = lsp->ls_state->inode;
5399 struct nfs_server *server = NFS_SERVER(inode);
5400
Trond Myklebust8535b2b2010-05-13 12:51:01 -04005401 p = kzalloc(sizeof(*p), gfp_mask);
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005402 if (p == NULL)
5403 return NULL;
5404
5405 p->arg.fh = NFS_FH(inode);
5406 p->arg.fl = &p->fl;
Trond Myklebust8535b2b2010-05-13 12:51:01 -04005407 p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid, gfp_mask);
Trond Myklebust2f74c0a2008-01-08 17:56:07 -05005408 if (p->arg.open_seqid == NULL)
5409 goto out_free;
Trond Myklebust8535b2b2010-05-13 12:51:01 -04005410 p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid, gfp_mask);
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005411 if (p->arg.lock_seqid == NULL)
Trond Myklebust2f74c0a2008-01-08 17:56:07 -05005412 goto out_free_seqid;
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005413 p->arg.lock_stateid = &lsp->ls_stateid;
David Howells7539bba2006-08-22 20:06:09 -04005414 p->arg.lock_owner.clientid = server->nfs_client->cl_clientid;
Trond Myklebust48c22eb2012-01-17 22:04:25 -05005415 p->arg.lock_owner.id = lsp->ls_seqid.owner_id;
Trond Myklebustd035c362010-12-21 10:45:27 -05005416 p->arg.lock_owner.s_dev = server->s_dev;
Trond Myklebustc1d51932008-04-07 13:20:54 -04005417 p->res.lock_seqid = p->arg.lock_seqid;
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005418 p->lsp = lsp;
Andy Adamson66179ef2009-04-01 09:22:22 -04005419 p->server = server;
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005420 atomic_inc(&lsp->ls_count);
5421 p->ctx = get_nfs_open_context(ctx);
5422 memcpy(&p->fl, fl, sizeof(p->fl));
5423 return p;
Trond Myklebust2f74c0a2008-01-08 17:56:07 -05005424out_free_seqid:
5425 nfs_free_seqid(p->arg.open_seqid);
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005426out_free:
5427 kfree(p);
5428 return NULL;
5429}
5430
5431static void nfs4_lock_prepare(struct rpc_task *task, void *calldata)
5432{
5433 struct nfs4_lockdata *data = calldata;
5434 struct nfs4_state *state = data->lsp->ls_state;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005435
Harvey Harrison3110ff82008-05-02 13:42:44 -07005436 dprintk("%s: begin!\n", __func__);
Trond Myklebust2f74c0a2008-01-08 17:56:07 -05005437 if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
Trond Myklebustc8da19b2013-02-11 19:01:21 -05005438 goto out_wait;
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005439 /* Do we need to do an open_to_lock_owner? */
5440 if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) {
Trond Myklebust8fe72ba2012-10-29 19:02:20 -04005441 if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0) {
Trond Myklebust2240a9e2012-10-29 18:37:40 -04005442 goto out_release_lock_seqid;
Trond Myklebust8fe72ba2012-10-29 19:02:20 -04005443 }
Trond Myklebust8e472f32013-04-20 01:30:53 -04005444 data->arg.open_stateid = &state->open_stateid;
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005445 data->arg.new_lock_owner = 1;
Trond Myklebustc1d51932008-04-07 13:20:54 -04005446 data->res.open_seqid = data->arg.open_seqid;
Trond Myklebust2f74c0a2008-01-08 17:56:07 -05005447 } else
5448 data->arg.new_lock_owner = 0;
Trond Myklebust5d422302013-03-14 16:57:48 -04005449 if (!nfs4_valid_open_stateid(state)) {
5450 data->rpc_status = -EBADF;
5451 task->tk_action = NULL;
5452 goto out_release_open_seqid;
5453 }
Trond Myklebust26e976a2006-01-03 09:55:21 +01005454 data->timestamp = jiffies;
Trond Myklebust035168a2010-06-16 09:52:26 -04005455 if (nfs4_setup_sequence(data->server,
5456 &data->arg.seq_args,
Trond Myklebust2240a9e2012-10-29 18:37:40 -04005457 &data->res.seq_res,
Trond Myklebustd9afbd12012-10-22 20:28:44 -04005458 task) == 0)
Andy Adamson66179ef2009-04-01 09:22:22 -04005459 return;
Trond Myklebust5d422302013-03-14 16:57:48 -04005460out_release_open_seqid:
Trond Myklebust2240a9e2012-10-29 18:37:40 -04005461 nfs_release_seqid(data->arg.open_seqid);
5462out_release_lock_seqid:
5463 nfs_release_seqid(data->arg.lock_seqid);
Trond Myklebustc8da19b2013-02-11 19:01:21 -05005464out_wait:
5465 nfs4_sequence_done(task, &data->res.seq_res);
Trond Myklebust8fe72ba2012-10-29 19:02:20 -04005466 dprintk("%s: done!, ret = %d\n", __func__, data->rpc_status);
Alexandros Batsakisb2579572009-12-14 21:27:57 -08005467}
5468
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005469static void nfs4_lock_done(struct rpc_task *task, void *calldata)
5470{
5471 struct nfs4_lockdata *data = calldata;
5472
Harvey Harrison3110ff82008-05-02 13:42:44 -07005473 dprintk("%s: begin!\n", __func__);
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005474
Trond Myklebust14516c32010-07-31 14:29:06 -04005475 if (!nfs4_sequence_done(task, &data->res.seq_res))
5476 return;
Andy Adamson66179ef2009-04-01 09:22:22 -04005477
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005478 data->rpc_status = task->tk_status;
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005479 if (data->arg.new_lock_owner != 0) {
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005480 if (data->rpc_status == 0)
5481 nfs_confirm_seqid(&data->lsp->ls_seqid, 0);
5482 else
5483 goto out;
5484 }
5485 if (data->rpc_status == 0) {
Trond Myklebustf597c532012-03-04 18:13:56 -05005486 nfs4_stateid_copy(&data->lsp->ls_stateid, &data->res.stateid);
Trond Myklebust795a88c2012-09-10 13:26:49 -04005487 set_bit(NFS_LOCK_INITIALIZED, &data->lsp->ls_flags);
Al Viro3d4ff432011-06-22 18:40:12 -04005488 renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp);
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005489 }
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005490out:
Harvey Harrison3110ff82008-05-02 13:42:44 -07005491 dprintk("%s: done, ret = %d!\n", __func__, data->rpc_status);
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005492}
5493
5494static void nfs4_lock_release(void *calldata)
5495{
5496 struct nfs4_lockdata *data = calldata;
5497
Harvey Harrison3110ff82008-05-02 13:42:44 -07005498 dprintk("%s: begin!\n", __func__);
Trond Myklebust2f74c0a2008-01-08 17:56:07 -05005499 nfs_free_seqid(data->arg.open_seqid);
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005500 if (data->cancelled != 0) {
5501 struct rpc_task *task;
5502 task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
5503 data->arg.lock_seqid);
5504 if (!IS_ERR(task))
Trond Myklebustbf294b42011-02-21 11:05:41 -08005505 rpc_put_task_async(task);
Harvey Harrison3110ff82008-05-02 13:42:44 -07005506 dprintk("%s: cancelling lock!\n", __func__);
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005507 } else
5508 nfs_free_seqid(data->arg.lock_seqid);
5509 nfs4_put_lock_state(data->lsp);
5510 put_nfs_open_context(data->ctx);
5511 kfree(data);
Harvey Harrison3110ff82008-05-02 13:42:44 -07005512 dprintk("%s: done!\n", __func__);
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005513}
5514
5515static const struct rpc_call_ops nfs4_lock_ops = {
5516 .rpc_call_prepare = nfs4_lock_prepare,
5517 .rpc_call_done = nfs4_lock_done,
5518 .rpc_release = nfs4_lock_release,
5519};
5520
Trond Myklebust2bee72a2010-01-26 15:42:21 -05005521static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error)
5522{
Trond Myklebust2bee72a2010-01-26 15:42:21 -05005523 switch (error) {
5524 case -NFS4ERR_ADMIN_REVOKED:
5525 case -NFS4ERR_BAD_STATEID:
Trond Myklebustecac7992011-03-09 16:00:56 -05005526 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
Trond Myklebust2bee72a2010-01-26 15:42:21 -05005527 if (new_lock_owner != 0 ||
Trond Myklebust795a88c2012-09-10 13:26:49 -04005528 test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) != 0)
Trond Myklebustecac7992011-03-09 16:00:56 -05005529 nfs4_schedule_stateid_recovery(server, lsp->ls_state);
Trond Myklebusta2c0b9e2010-01-26 15:42:47 -05005530 break;
5531 case -NFS4ERR_STALE_STATEID:
Trond Myklebusta2c0b9e2010-01-26 15:42:47 -05005532 lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
Trond Myklebustecac7992011-03-09 16:00:56 -05005533 case -NFS4ERR_EXPIRED:
5534 nfs4_schedule_lease_recovery(server->nfs_client);
Trond Myklebust2bee72a2010-01-26 15:42:21 -05005535 };
5536}
5537
Alexandros Batsakisafe6c272009-12-09 01:50:14 -08005538static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type)
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005539{
5540 struct nfs4_lockdata *data;
5541 struct rpc_task *task;
Trond Myklebust5138fde2007-07-14 15:40:01 -04005542 struct rpc_message msg = {
5543 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK],
5544 .rpc_cred = state->owner->so_cred,
5545 };
Trond Myklebustc970aa82007-07-14 15:39:59 -04005546 struct rpc_task_setup task_setup_data = {
5547 .rpc_client = NFS_CLIENT(state->inode),
Trond Myklebust5138fde2007-07-14 15:40:01 -04005548 .rpc_message = &msg,
Trond Myklebustc970aa82007-07-14 15:39:59 -04005549 .callback_ops = &nfs4_lock_ops,
Trond Myklebust101070c2008-02-19 20:04:23 -05005550 .workqueue = nfsiod_workqueue,
Trond Myklebustc970aa82007-07-14 15:39:59 -04005551 .flags = RPC_TASK_ASYNC,
5552 };
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005553 int ret;
5554
Harvey Harrison3110ff82008-05-02 13:42:44 -07005555 dprintk("%s: begin!\n", __func__);
Trond Myklebustcd3758e2007-08-10 17:44:32 -04005556 data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file),
Trond Myklebust8535b2b2010-05-13 12:51:01 -04005557 fl->fl_u.nfs4_fl.owner,
5558 recovery_type == NFS_LOCK_NEW ? GFP_KERNEL : GFP_NOFS);
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005559 if (data == NULL)
5560 return -ENOMEM;
5561 if (IS_SETLKW(cmd))
5562 data->arg.block = 1;
Chuck Levera9c92d62013-08-09 12:48:18 -04005563 nfs4_init_sequence(&data->arg.seq_args, &data->res.seq_res, 1);
Trond Myklebust1174dd12010-12-21 10:52:24 -05005564 msg.rpc_argp = &data->arg;
5565 msg.rpc_resp = &data->res;
Trond Myklebustc970aa82007-07-14 15:39:59 -04005566 task_setup_data.callback_data = data;
Trond Myklebust8fe72ba2012-10-29 19:02:20 -04005567 if (recovery_type > NFS_LOCK_NEW) {
5568 if (recovery_type == NFS_LOCK_RECLAIM)
5569 data->arg.reclaim = NFS_LOCK_RECLAIM;
5570 nfs4_set_sequence_privileged(&data->arg.seq_args);
5571 }
Trond Myklebustc970aa82007-07-14 15:39:59 -04005572 task = rpc_run_task(&task_setup_data);
Trond Myklebust7a1218a2006-03-20 18:11:10 -05005573 if (IS_ERR(task))
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005574 return PTR_ERR(task);
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005575 ret = nfs4_wait_for_completion_rpc_task(task);
5576 if (ret == 0) {
5577 ret = data->rpc_status;
Trond Myklebust2bee72a2010-01-26 15:42:21 -05005578 if (ret)
5579 nfs4_handle_setlk_error(data->server, data->lsp,
5580 data->arg.new_lock_owner, ret);
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005581 } else
5582 data->cancelled = 1;
Trond Myklebuste6b3c4d2006-11-11 22:18:03 -05005583 rpc_put_task(task);
Harvey Harrison3110ff82008-05-02 13:42:44 -07005584 dprintk("%s: done, ret = %d!\n", __func__, ret);
Trond Myklebusta5d16a42006-01-03 09:55:17 +01005585 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005586}
5587
5588static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request)
5589{
Trond Myklebust202b50d2005-06-22 17:16:29 +00005590 struct nfs_server *server = NFS_SERVER(state->inode);
Trond Myklebust05ffe242012-04-18 12:20:10 -04005591 struct nfs4_exception exception = {
5592 .inode = state->inode,
5593 };
Trond Myklebust202b50d2005-06-22 17:16:29 +00005594 int err;
5595
5596 do {
Trond Myklebust42a2d132006-06-29 16:38:36 -04005597 /* Cache the lock if possible... */
5598 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
5599 return 0;
Alexandros Batsakisafe6c272009-12-09 01:50:14 -08005600 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_RECLAIM);
Trond Myklebustd1b748a2013-08-12 16:35:20 -04005601 trace_nfs4_lock_reclaim(request, state, F_SETLK, err);
Trond Myklebust168667c2010-10-19 19:47:49 -04005602 if (err != -NFS4ERR_DELAY)
Trond Myklebust202b50d2005-06-22 17:16:29 +00005603 break;
5604 nfs4_handle_exception(server, err, &exception);
5605 } while (exception.retry);
5606 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005607}
5608
5609static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request)
5610{
Trond Myklebust202b50d2005-06-22 17:16:29 +00005611 struct nfs_server *server = NFS_SERVER(state->inode);
Trond Myklebust05ffe242012-04-18 12:20:10 -04005612 struct nfs4_exception exception = {
5613 .inode = state->inode,
5614 };
Trond Myklebust202b50d2005-06-22 17:16:29 +00005615 int err;
5616
Trond Myklebust6bfc93e2005-11-04 15:39:36 -05005617 err = nfs4_set_lock_state(state, request);
5618 if (err != 0)
5619 return err;
Trond Myklebustf6de7a32013-09-04 10:08:54 -04005620 if (!recover_lost_locks) {
NeilBrownef1820f2013-09-04 17:04:49 +10005621 set_bit(NFS_LOCK_LOST, &request->fl_u.nfs4_fl.owner->ls_flags);
5622 return 0;
5623 }
Trond Myklebust202b50d2005-06-22 17:16:29 +00005624 do {
Trond Myklebust42a2d132006-06-29 16:38:36 -04005625 if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
5626 return 0;
Alexandros Batsakisafe6c272009-12-09 01:50:14 -08005627 err = _nfs4_do_setlk(state, F_SETLK, request, NFS_LOCK_EXPIRED);
Trond Myklebustd1b748a2013-08-12 16:35:20 -04005628 trace_nfs4_lock_expired(request, state, F_SETLK, err);
Trond Myklebusta9ed2e22009-12-03 15:53:21 -05005629 switch (err) {
5630 default:
5631 goto out;
5632 case -NFS4ERR_GRACE:
5633 case -NFS4ERR_DELAY:
5634 nfs4_handle_exception(server, err, &exception);
5635 err = 0;
5636 }
Trond Myklebust202b50d2005-06-22 17:16:29 +00005637 } while (exception.retry);
Trond Myklebusta9ed2e22009-12-03 15:53:21 -05005638out:
Trond Myklebust202b50d2005-06-22 17:16:29 +00005639 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005640}
5641
Bryan Schumakerf062eb62011-06-02 14:59:10 -04005642#if defined(CONFIG_NFS_V4_1)
Chuck Lever3e60ffd2012-07-11 16:30:14 -04005643/**
5644 * nfs41_check_expired_locks - possibly free a lock stateid
5645 *
5646 * @state: NFSv4 state for an inode
5647 *
5648 * Returns NFS_OK if recovery for this stateid is now finished.
5649 * Otherwise a negative NFS4ERR value is returned.
5650 */
Bryan Schumakerb01dd1d2012-01-31 10:39:30 -05005651static int nfs41_check_expired_locks(struct nfs4_state *state)
Bryan Schumakerf062eb62011-06-02 14:59:10 -04005652{
Chuck Levereb64cf92012-07-11 16:30:05 -04005653 int status, ret = -NFS4ERR_BAD_STATEID;
Bryan Schumakerb01dd1d2012-01-31 10:39:30 -05005654 struct nfs4_lock_state *lsp;
Bryan Schumakerf062eb62011-06-02 14:59:10 -04005655 struct nfs_server *server = NFS_SERVER(state->inode);
5656
Bryan Schumakerb01dd1d2012-01-31 10:39:30 -05005657 list_for_each_entry(lsp, &state->lock_states, ls_locks) {
Trond Myklebust795a88c2012-09-10 13:26:49 -04005658 if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) {
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04005659 struct rpc_cred *cred = lsp->ls_state->owner->so_cred;
5660
5661 status = nfs41_test_stateid(server,
5662 &lsp->ls_stateid,
5663 cred);
Trond Myklebust08cb47f2013-08-20 21:59:40 -04005664 trace_nfs4_test_lock_stateid(state, lsp, status);
Bryan Schumakerb01dd1d2012-01-31 10:39:30 -05005665 if (status != NFS_OK) {
Chuck Lever3e60ffd2012-07-11 16:30:14 -04005666 /* Free the stateid unless the server
5667 * informs us the stateid is unrecognized. */
Chuck Lever89af2732012-07-11 16:29:56 -04005668 if (status != -NFS4ERR_BAD_STATEID)
5669 nfs41_free_stateid(server,
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04005670 &lsp->ls_stateid,
5671 cred);
Trond Myklebust795a88c2012-09-10 13:26:49 -04005672 clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags);
Bryan Schumakerb01dd1d2012-01-31 10:39:30 -05005673 ret = status;
5674 }
5675 }
5676 };
5677
5678 return ret;
5679}
5680
5681static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request)
5682{
5683 int status = NFS_OK;
5684
5685 if (test_bit(LK_STATE_IN_USE, &state->flags))
5686 status = nfs41_check_expired_locks(state);
Chuck Levereb64cf92012-07-11 16:30:05 -04005687 if (status != NFS_OK)
5688 status = nfs4_lock_expired(state, request);
5689 return status;
Bryan Schumakerf062eb62011-06-02 14:59:10 -04005690}
5691#endif
5692
Linus Torvalds1da177e2005-04-16 15:20:36 -07005693static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
5694{
Trond Myklebust9a99af492013-02-04 20:17:49 -05005695 struct nfs4_state_owner *sp = state->owner;
Trond Myklebust19e03c52008-12-23 15:21:44 -05005696 struct nfs_inode *nfsi = NFS_I(state->inode);
Trond Myklebust01c3b862006-06-29 16:38:39 -04005697 unsigned char fl_flags = request->fl_flags;
Trond Myklebust9a99af492013-02-04 20:17:49 -05005698 unsigned int seq;
Trond Myklebust8e469eb2010-01-26 15:42:30 -05005699 int status = -ENOLCK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005700
Trond Myklebust8e469eb2010-01-26 15:42:30 -05005701 if ((fl_flags & FL_POSIX) &&
5702 !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags))
5703 goto out;
Trond Myklebust6bfc93e2005-11-04 15:39:36 -05005704 /* Is this a delegated open? */
Trond Myklebust6bfc93e2005-11-04 15:39:36 -05005705 status = nfs4_set_lock_state(state, request);
5706 if (status != 0)
5707 goto out;
Trond Myklebust01c3b862006-06-29 16:38:39 -04005708 request->fl_flags |= FL_ACCESS;
5709 status = do_vfs_lock(request->fl_file, request);
5710 if (status < 0)
5711 goto out;
Trond Myklebust19e03c52008-12-23 15:21:44 -05005712 down_read(&nfsi->rwsem);
Trond Myklebust01c3b862006-06-29 16:38:39 -04005713 if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
Trond Myklebust01c3b862006-06-29 16:38:39 -04005714 /* Yes: cache locks! */
Trond Myklebust01c3b862006-06-29 16:38:39 -04005715 /* ...but avoid races with delegation recall... */
Trond Myklebust19e03c52008-12-23 15:21:44 -05005716 request->fl_flags = fl_flags & ~FL_SLEEP;
5717 status = do_vfs_lock(request->fl_file, request);
5718 goto out_unlock;
Trond Myklebust01c3b862006-06-29 16:38:39 -04005719 }
Trond Myklebust9a99af492013-02-04 20:17:49 -05005720 seq = raw_seqcount_begin(&sp->so_reclaim_seqcount);
5721 up_read(&nfsi->rwsem);
Alexandros Batsakisafe6c272009-12-09 01:50:14 -08005722 status = _nfs4_do_setlk(state, cmd, request, NFS_LOCK_NEW);
Trond Myklebust6bfc93e2005-11-04 15:39:36 -05005723 if (status != 0)
Trond Myklebust9a99af492013-02-04 20:17:49 -05005724 goto out;
5725 down_read(&nfsi->rwsem);
5726 if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) {
5727 status = -NFS4ERR_DELAY;
Trond Myklebust01c3b862006-06-29 16:38:39 -04005728 goto out_unlock;
Trond Myklebust9a99af492013-02-04 20:17:49 -05005729 }
Trond Myklebust6bfc93e2005-11-04 15:39:36 -05005730 /* Note: we always want to sleep here! */
Trond Myklebust01c3b862006-06-29 16:38:39 -04005731 request->fl_flags = fl_flags | FL_SLEEP;
Trond Myklebust6bfc93e2005-11-04 15:39:36 -05005732 if (do_vfs_lock(request->fl_file, request) < 0)
Weston Andros Adamsona0308892012-01-26 13:32:23 -05005733 printk(KERN_WARNING "NFS: %s: VFS is out of sync with lock "
5734 "manager!\n", __func__);
Trond Myklebust01c3b862006-06-29 16:38:39 -04005735out_unlock:
Trond Myklebust19e03c52008-12-23 15:21:44 -05005736 up_read(&nfsi->rwsem);
Trond Myklebust01c3b862006-06-29 16:38:39 -04005737out:
5738 request->fl_flags = fl_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005739 return status;
5740}
5741
5742static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
5743{
Trond Myklebusta1d0b5e2012-03-05 19:56:44 -05005744 struct nfs4_exception exception = {
5745 .state = state,
Trond Myklebust05ffe242012-04-18 12:20:10 -04005746 .inode = state->inode,
Trond Myklebusta1d0b5e2012-03-05 19:56:44 -05005747 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07005748 int err;
5749
5750 do {
Trond Myklebust965b5d62009-06-17 13:22:59 -07005751 err = _nfs4_proc_setlk(state, cmd, request);
Trond Myklebustd1b748a2013-08-12 16:35:20 -04005752 trace_nfs4_set_lock(request, state, cmd, err);
Trond Myklebust965b5d62009-06-17 13:22:59 -07005753 if (err == -NFS4ERR_DENIED)
5754 err = -EAGAIN;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005755 err = nfs4_handle_exception(NFS_SERVER(state->inode),
Trond Myklebust965b5d62009-06-17 13:22:59 -07005756 err, &exception);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005757 } while (exception.retry);
5758 return err;
5759}
5760
5761static int
5762nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request)
5763{
5764 struct nfs_open_context *ctx;
5765 struct nfs4_state *state;
5766 unsigned long timeout = NFS4_LOCK_MINTIMEOUT;
5767 int status;
5768
5769 /* verify open state */
Trond Myklebustcd3758e2007-08-10 17:44:32 -04005770 ctx = nfs_file_open_context(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005771 state = ctx->state;
5772
5773 if (request->fl_start < 0 || request->fl_end < 0)
5774 return -EINVAL;
5775
Trond Myklebustd9531262009-07-21 19:22:38 -04005776 if (IS_GETLK(cmd)) {
5777 if (state != NULL)
5778 return nfs4_proc_getlk(state, F_GETLK, request);
5779 return 0;
5780 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07005781
5782 if (!(IS_SETLK(cmd) || IS_SETLKW(cmd)))
5783 return -EINVAL;
5784
Trond Myklebustd9531262009-07-21 19:22:38 -04005785 if (request->fl_type == F_UNLCK) {
5786 if (state != NULL)
5787 return nfs4_proc_unlck(state, cmd, request);
5788 return 0;
5789 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07005790
Trond Myklebustd9531262009-07-21 19:22:38 -04005791 if (state == NULL)
5792 return -ENOLCK;
Trond Myklebust55725512012-04-18 12:48:35 -04005793 /*
5794 * Don't rely on the VFS having checked the file open mode,
5795 * since it won't do this for flock() locks.
5796 */
Jeff Laytonf44106e2012-07-23 15:49:56 -04005797 switch (request->fl_type) {
Trond Myklebust55725512012-04-18 12:48:35 -04005798 case F_RDLCK:
5799 if (!(filp->f_mode & FMODE_READ))
5800 return -EBADF;
5801 break;
5802 case F_WRLCK:
5803 if (!(filp->f_mode & FMODE_WRITE))
5804 return -EBADF;
5805 }
5806
Linus Torvalds1da177e2005-04-16 15:20:36 -07005807 do {
5808 status = nfs4_proc_setlk(state, cmd, request);
5809 if ((status != -EAGAIN) || IS_SETLK(cmd))
5810 break;
5811 timeout = nfs4_set_lock_task_retry(timeout);
5812 status = -ERESTARTSYS;
5813 if (signalled())
5814 break;
5815 } while(status < 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005816 return status;
5817}
5818
Trond Myklebustdb4f2e632013-04-01 15:56:46 -04005819int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid)
Trond Myklebust888e6942005-11-04 15:38:11 -05005820{
5821 struct nfs_server *server = NFS_SERVER(state->inode);
Trond Myklebust888e6942005-11-04 15:38:11 -05005822 int err;
5823
5824 err = nfs4_set_lock_state(state, fl);
5825 if (err != 0)
Trond Myklebustdb4f2e632013-04-01 15:56:46 -04005826 return err;
Trond Myklebust4a706fa2013-04-01 14:47:22 -04005827 err = _nfs4_do_setlk(state, F_SETLK, fl, NFS_LOCK_NEW);
Trond Myklebustdb4f2e632013-04-01 15:56:46 -04005828 return nfs4_handle_delegation_recall_error(server, state, stateid, err);
Trond Myklebust888e6942005-11-04 15:38:11 -05005829}
J. Bruce Fields6b3b5492005-06-22 17:16:22 +00005830
Trond Myklebustcf470c32012-03-07 13:49:12 -05005831struct nfs_release_lockowner_data {
5832 struct nfs4_lock_state *lsp;
Trond Myklebust5ae67c42012-03-19 16:17:18 -04005833 struct nfs_server *server;
Trond Myklebustcf470c32012-03-07 13:49:12 -05005834 struct nfs_release_lockowner_args args;
Trond Myklebustb7e63a12014-02-26 11:19:14 -08005835 struct nfs_release_lockowner_res res;
Chuck Lever60ea6812013-10-17 14:13:47 -04005836 unsigned long timestamp;
Trond Myklebustcf470c32012-03-07 13:49:12 -05005837};
5838
Chuck Leverfbd4bfd2013-08-09 12:49:38 -04005839static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata)
5840{
5841 struct nfs_release_lockowner_data *data = calldata;
5842 nfs40_setup_sequence(data->server,
Trond Myklebustb7e63a12014-02-26 11:19:14 -08005843 &data->args.seq_args, &data->res.seq_res, task);
Chuck Lever60ea6812013-10-17 14:13:47 -04005844 data->timestamp = jiffies;
Chuck Leverfbd4bfd2013-08-09 12:49:38 -04005845}
5846
5847static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata)
5848{
5849 struct nfs_release_lockowner_data *data = calldata;
Chuck Lever60ea6812013-10-17 14:13:47 -04005850 struct nfs_server *server = data->server;
5851
Trond Myklebustb7e63a12014-02-26 11:19:14 -08005852 nfs40_sequence_done(task, &data->res.seq_res);
Chuck Lever60ea6812013-10-17 14:13:47 -04005853
5854 switch (task->tk_status) {
5855 case 0:
5856 renew_lease(server, data->timestamp);
5857 break;
5858 case -NFS4ERR_STALE_CLIENTID:
5859 case -NFS4ERR_EXPIRED:
5860 case -NFS4ERR_LEASE_MOVED:
5861 case -NFS4ERR_DELAY:
5862 if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN)
5863 rpc_restart_call_prepare(task);
5864 }
Chuck Leverfbd4bfd2013-08-09 12:49:38 -04005865}
5866
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04005867static void nfs4_release_lockowner_release(void *calldata)
5868{
Trond Myklebustcf470c32012-03-07 13:49:12 -05005869 struct nfs_release_lockowner_data *data = calldata;
Trond Myklebust5ae67c42012-03-19 16:17:18 -04005870 nfs4_free_lock_state(data->server, data->lsp);
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04005871 kfree(calldata);
5872}
5873
Trond Myklebust17280172012-03-11 13:11:00 -04005874static const struct rpc_call_ops nfs4_release_lockowner_ops = {
Chuck Leverfbd4bfd2013-08-09 12:49:38 -04005875 .rpc_call_prepare = nfs4_release_lockowner_prepare,
5876 .rpc_call_done = nfs4_release_lockowner_done,
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04005877 .rpc_release = nfs4_release_lockowner_release,
5878};
5879
Trond Myklebustc8b2d0b2013-05-03 16:22:55 -04005880static int nfs4_release_lockowner(struct nfs_server *server, struct nfs4_lock_state *lsp)
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04005881{
Trond Myklebustcf470c32012-03-07 13:49:12 -05005882 struct nfs_release_lockowner_data *data;
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04005883 struct rpc_message msg = {
5884 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RELEASE_LOCKOWNER],
5885 };
5886
5887 if (server->nfs_client->cl_mvops->minor_version != 0)
Trond Myklebustcf470c32012-03-07 13:49:12 -05005888 return -EINVAL;
Chuck Leverfbd4bfd2013-08-09 12:49:38 -04005889
Trond Myklebustcf470c32012-03-07 13:49:12 -05005890 data = kmalloc(sizeof(*data), GFP_NOFS);
5891 if (!data)
5892 return -ENOMEM;
5893 data->lsp = lsp;
Trond Myklebust5ae67c42012-03-19 16:17:18 -04005894 data->server = server;
Trond Myklebustcf470c32012-03-07 13:49:12 -05005895 data->args.lock_owner.clientid = server->nfs_client->cl_clientid;
5896 data->args.lock_owner.id = lsp->ls_seqid.owner_id;
5897 data->args.lock_owner.s_dev = server->s_dev;
Chuck Leverfbd4bfd2013-08-09 12:49:38 -04005898
Trond Myklebustcf470c32012-03-07 13:49:12 -05005899 msg.rpc_argp = &data->args;
Trond Myklebustb7e63a12014-02-26 11:19:14 -08005900 msg.rpc_resp = &data->res;
5901 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
Trond Myklebustcf470c32012-03-07 13:49:12 -05005902 rpc_call_async(server->client, &msg, 0, &nfs4_release_lockowner_ops, data);
5903 return 0;
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04005904}
5905
J. Bruce Fieldsaa1870a2005-06-22 17:16:22 +00005906#define XATTR_NAME_NFSV4_ACL "system.nfs4_acl"
5907
Aneesh Kumar K.V64c2ce82010-12-09 11:35:25 +00005908static int nfs4_xattr_set_nfs4_acl(struct dentry *dentry, const char *key,
5909 const void *buf, size_t buflen,
5910 int flags, int type)
J. Bruce Fields6b3b5492005-06-22 17:16:22 +00005911{
Aneesh Kumar K.V64c2ce82010-12-09 11:35:25 +00005912 if (strcmp(key, "") != 0)
5913 return -EINVAL;
J. Bruce Fields4b580ee2005-06-22 17:16:23 +00005914
Aneesh Kumar K.V64c2ce82010-12-09 11:35:25 +00005915 return nfs4_proc_set_acl(dentry->d_inode, buf, buflen);
J. Bruce Fields6b3b5492005-06-22 17:16:22 +00005916}
5917
Aneesh Kumar K.V64c2ce82010-12-09 11:35:25 +00005918static int nfs4_xattr_get_nfs4_acl(struct dentry *dentry, const char *key,
5919 void *buf, size_t buflen, int type)
J. Bruce Fields6b3b5492005-06-22 17:16:22 +00005920{
Aneesh Kumar K.V64c2ce82010-12-09 11:35:25 +00005921 if (strcmp(key, "") != 0)
5922 return -EINVAL;
J. Bruce Fieldsaa1870a2005-06-22 17:16:22 +00005923
Aneesh Kumar K.V64c2ce82010-12-09 11:35:25 +00005924 return nfs4_proc_get_acl(dentry->d_inode, buf, buflen);
J. Bruce Fields6b3b5492005-06-22 17:16:22 +00005925}
5926
Aneesh Kumar K.V64c2ce82010-12-09 11:35:25 +00005927static size_t nfs4_xattr_list_nfs4_acl(struct dentry *dentry, char *list,
5928 size_t list_len, const char *name,
5929 size_t name_len, int type)
J. Bruce Fields6b3b5492005-06-22 17:16:22 +00005930{
Aneesh Kumar K.V64c2ce82010-12-09 11:35:25 +00005931 size_t len = sizeof(XATTR_NAME_NFSV4_ACL);
J. Bruce Fields6b3b5492005-06-22 17:16:22 +00005932
J. Bruce Fields096455a2006-03-20 23:23:42 -05005933 if (!nfs4_server_supports_acls(NFS_SERVER(dentry->d_inode)))
5934 return 0;
Aneesh Kumar K.V64c2ce82010-12-09 11:35:25 +00005935
5936 if (list && len <= list_len)
5937 memcpy(list, XATTR_NAME_NFSV4_ACL, len);
J. Bruce Fieldsaa1870a2005-06-22 17:16:22 +00005938 return len;
J. Bruce Fields6b3b5492005-06-22 17:16:22 +00005939}
5940
David Quigleyc9bccef2013-05-22 12:50:45 -04005941#ifdef CONFIG_NFS_V4_SECURITY_LABEL
5942static inline int nfs4_server_supports_labels(struct nfs_server *server)
5943{
5944 return server->caps & NFS_CAP_SECURITY_LABEL;
5945}
5946
5947static int nfs4_xattr_set_nfs4_label(struct dentry *dentry, const char *key,
5948 const void *buf, size_t buflen,
5949 int flags, int type)
5950{
5951 if (security_ismaclabel(key))
5952 return nfs4_set_security_label(dentry, buf, buflen);
5953
5954 return -EOPNOTSUPP;
5955}
5956
5957static int nfs4_xattr_get_nfs4_label(struct dentry *dentry, const char *key,
5958 void *buf, size_t buflen, int type)
5959{
5960 if (security_ismaclabel(key))
5961 return nfs4_get_security_label(dentry->d_inode, buf, buflen);
5962 return -EOPNOTSUPP;
5963}
5964
5965static size_t nfs4_xattr_list_nfs4_label(struct dentry *dentry, char *list,
5966 size_t list_len, const char *name,
5967 size_t name_len, int type)
5968{
5969 size_t len = 0;
5970
5971 if (nfs_server_capable(dentry->d_inode, NFS_CAP_SECURITY_LABEL)) {
5972 len = security_inode_listsecurity(dentry->d_inode, NULL, 0);
5973 if (list && len <= list_len)
5974 security_inode_listsecurity(dentry->d_inode, list, len);
5975 }
5976 return len;
5977}
5978
5979static const struct xattr_handler nfs4_xattr_nfs4_label_handler = {
5980 .prefix = XATTR_SECURITY_PREFIX,
5981 .list = nfs4_xattr_list_nfs4_label,
5982 .get = nfs4_xattr_get_nfs4_label,
5983 .set = nfs4_xattr_set_nfs4_label,
5984};
5985#endif
5986
5987
Andy Adamson533eb462011-06-13 18:25:56 -04005988/*
5989 * nfs_fhget will use either the mounted_on_fileid or the fileid
5990 */
Trond Myklebust69aaaae2009-03-11 14:10:28 -04005991static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr)
5992{
Andy Adamson533eb462011-06-13 18:25:56 -04005993 if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) ||
5994 (fattr->valid & NFS_ATTR_FATTR_FILEID)) &&
5995 (fattr->valid & NFS_ATTR_FATTR_FSID) &&
Chuck Lever81934dd2012-03-01 17:01:57 -05005996 (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS)))
Trond Myklebust69aaaae2009-03-11 14:10:28 -04005997 return;
5998
5999 fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
Chuck Lever81934dd2012-03-01 17:01:57 -05006000 NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL;
Trond Myklebust69aaaae2009-03-11 14:10:28 -04006001 fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
6002 fattr->nlink = 2;
6003}
6004
Bryan Schumakerf05d1472012-04-27 13:27:41 -04006005static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir,
6006 const struct qstr *name,
6007 struct nfs4_fs_locations *fs_locations,
6008 struct page *page)
Trond Myklebust683b57b2006-06-09 09:34:22 -04006009{
6010 struct nfs_server *server = NFS_SERVER(dir);
David Quigleya09df2c2013-05-22 12:50:41 -04006011 u32 bitmask[3] = {
Manoj Naik361e6242006-06-09 09:34:24 -04006012 [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
Trond Myklebust683b57b2006-06-09 09:34:22 -04006013 };
6014 struct nfs4_fs_locations_arg args = {
6015 .dir_fh = NFS_FH(dir),
Trond Myklebustc228fd32007-01-13 02:28:11 -05006016 .name = name,
Trond Myklebust683b57b2006-06-09 09:34:22 -04006017 .page = page,
6018 .bitmask = bitmask,
6019 };
Benny Halevy22958462009-04-01 09:22:02 -04006020 struct nfs4_fs_locations_res res = {
6021 .fs_locations = fs_locations,
6022 };
Trond Myklebust683b57b2006-06-09 09:34:22 -04006023 struct rpc_message msg = {
6024 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
6025 .rpc_argp = &args,
Benny Halevy22958462009-04-01 09:22:02 -04006026 .rpc_resp = &res,
Trond Myklebust683b57b2006-06-09 09:34:22 -04006027 };
6028 int status;
6029
Harvey Harrison3110ff82008-05-02 13:42:44 -07006030 dprintk("%s: start\n", __func__);
Andy Adamson533eb462011-06-13 18:25:56 -04006031
6032 /* Ask for the fileid of the absent filesystem if mounted_on_fileid
6033 * is not supported */
6034 if (NFS_SERVER(dir)->attr_bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
6035 bitmask[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID;
6036 else
6037 bitmask[0] |= FATTR4_WORD0_FILEID;
6038
Trond Myklebustc228fd32007-01-13 02:28:11 -05006039 nfs_fattr_init(&fs_locations->fattr);
Trond Myklebust683b57b2006-06-09 09:34:22 -04006040 fs_locations->server = server;
Manoj Naik830b8e32006-06-09 09:34:25 -04006041 fs_locations->nlocations = 0;
Bryan Schumakerf05d1472012-04-27 13:27:41 -04006042 status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0);
Harvey Harrison3110ff82008-05-02 13:42:44 -07006043 dprintk("%s: returned status = %d\n", __func__, status);
Trond Myklebust683b57b2006-06-09 09:34:22 -04006044 return status;
6045}
6046
Bryan Schumakerf05d1472012-04-27 13:27:41 -04006047int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir,
6048 const struct qstr *name,
6049 struct nfs4_fs_locations *fs_locations,
6050 struct page *page)
Bryan Schumakerdb0a9592012-04-27 13:27:39 -04006051{
6052 struct nfs4_exception exception = { };
6053 int err;
6054 do {
Trond Myklebust078ea3d2013-08-12 16:45:55 -04006055 err = _nfs4_proc_fs_locations(client, dir, name,
6056 fs_locations, page);
6057 trace_nfs4_get_fs_locations(dir, name, err);
6058 err = nfs4_handle_exception(NFS_SERVER(dir), err,
Bryan Schumakerdb0a9592012-04-27 13:27:39 -04006059 &exception);
6060 } while (exception.retry);
6061 return err;
6062}
6063
Chuck Leverb03d7352013-10-17 14:12:50 -04006064/*
6065 * This operation also signals the server that this client is
6066 * performing migration recovery. The server can stop returning
6067 * NFS4ERR_LEASE_MOVED to this client. A RENEW operation is
6068 * appended to this compound to identify the client ID which is
6069 * performing recovery.
6070 */
6071static int _nfs40_proc_get_locations(struct inode *inode,
6072 struct nfs4_fs_locations *locations,
6073 struct page *page, struct rpc_cred *cred)
6074{
6075 struct nfs_server *server = NFS_SERVER(inode);
6076 struct rpc_clnt *clnt = server->client;
6077 u32 bitmask[2] = {
6078 [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
6079 };
6080 struct nfs4_fs_locations_arg args = {
6081 .clientid = server->nfs_client->cl_clientid,
6082 .fh = NFS_FH(inode),
6083 .page = page,
6084 .bitmask = bitmask,
6085 .migration = 1, /* skip LOOKUP */
6086 .renew = 1, /* append RENEW */
6087 };
6088 struct nfs4_fs_locations_res res = {
6089 .fs_locations = locations,
6090 .migration = 1,
6091 .renew = 1,
6092 };
6093 struct rpc_message msg = {
6094 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
6095 .rpc_argp = &args,
6096 .rpc_resp = &res,
6097 .rpc_cred = cred,
6098 };
6099 unsigned long now = jiffies;
6100 int status;
6101
6102 nfs_fattr_init(&locations->fattr);
6103 locations->server = server;
6104 locations->nlocations = 0;
6105
6106 nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
6107 nfs4_set_sequence_privileged(&args.seq_args);
6108 status = nfs4_call_sync_sequence(clnt, server, &msg,
6109 &args.seq_args, &res.seq_res);
6110 if (status)
6111 return status;
6112
6113 renew_lease(server, now);
6114 return 0;
6115}
6116
6117#ifdef CONFIG_NFS_V4_1
6118
6119/*
6120 * This operation also signals the server that this client is
6121 * performing migration recovery. The server can stop asserting
6122 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID
6123 * performing this operation is identified in the SEQUENCE
6124 * operation in this compound.
6125 *
6126 * When the client supports GETATTR(fs_locations_info), it can
6127 * be plumbed in here.
6128 */
6129static int _nfs41_proc_get_locations(struct inode *inode,
6130 struct nfs4_fs_locations *locations,
6131 struct page *page, struct rpc_cred *cred)
6132{
6133 struct nfs_server *server = NFS_SERVER(inode);
6134 struct rpc_clnt *clnt = server->client;
6135 u32 bitmask[2] = {
6136 [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
6137 };
6138 struct nfs4_fs_locations_arg args = {
6139 .fh = NFS_FH(inode),
6140 .page = page,
6141 .bitmask = bitmask,
6142 .migration = 1, /* skip LOOKUP */
6143 };
6144 struct nfs4_fs_locations_res res = {
6145 .fs_locations = locations,
6146 .migration = 1,
6147 };
6148 struct rpc_message msg = {
6149 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
6150 .rpc_argp = &args,
6151 .rpc_resp = &res,
6152 .rpc_cred = cred,
6153 };
6154 int status;
6155
6156 nfs_fattr_init(&locations->fattr);
6157 locations->server = server;
6158 locations->nlocations = 0;
6159
6160 nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
6161 nfs4_set_sequence_privileged(&args.seq_args);
6162 status = nfs4_call_sync_sequence(clnt, server, &msg,
6163 &args.seq_args, &res.seq_res);
6164 if (status == NFS4_OK &&
6165 res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED)
6166 status = -NFS4ERR_LEASE_MOVED;
6167 return status;
6168}
6169
6170#endif /* CONFIG_NFS_V4_1 */
6171
6172/**
6173 * nfs4_proc_get_locations - discover locations for a migrated FSID
6174 * @inode: inode on FSID that is migrating
6175 * @locations: result of query
6176 * @page: buffer
6177 * @cred: credential to use for this operation
6178 *
6179 * Returns NFS4_OK on success, a negative NFS4ERR status code if the
6180 * operation failed, or a negative errno if a local error occurred.
6181 *
6182 * On success, "locations" is filled in, but if the server has
6183 * no locations information, NFS_ATTR_FATTR_V4_LOCATIONS is not
6184 * asserted.
6185 *
6186 * -NFS4ERR_LEASE_MOVED is returned if the server still has leases
6187 * from this client that require migration recovery.
6188 */
6189int nfs4_proc_get_locations(struct inode *inode,
6190 struct nfs4_fs_locations *locations,
6191 struct page *page, struct rpc_cred *cred)
6192{
6193 struct nfs_server *server = NFS_SERVER(inode);
6194 struct nfs_client *clp = server->nfs_client;
6195 const struct nfs4_mig_recovery_ops *ops =
6196 clp->cl_mvops->mig_recovery_ops;
6197 struct nfs4_exception exception = { };
6198 int status;
6199
6200 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__,
6201 (unsigned long long)server->fsid.major,
6202 (unsigned long long)server->fsid.minor,
6203 clp->cl_hostname);
6204 nfs_display_fhandle(NFS_FH(inode), __func__);
6205
6206 do {
6207 status = ops->get_locations(inode, locations, page, cred);
6208 if (status != -NFS4ERR_DELAY)
6209 break;
6210 nfs4_handle_exception(server, status, &exception);
6211 } while (exception.retry);
6212 return status;
6213}
6214
Chuck Lever44c99932013-10-17 14:13:30 -04006215/*
6216 * This operation also signals the server that this client is
6217 * performing "lease moved" recovery. The server can stop
6218 * returning NFS4ERR_LEASE_MOVED to this client. A RENEW operation
6219 * is appended to this compound to identify the client ID which is
6220 * performing recovery.
6221 */
6222static int _nfs40_proc_fsid_present(struct inode *inode, struct rpc_cred *cred)
6223{
6224 struct nfs_server *server = NFS_SERVER(inode);
6225 struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
6226 struct rpc_clnt *clnt = server->client;
6227 struct nfs4_fsid_present_arg args = {
6228 .fh = NFS_FH(inode),
6229 .clientid = clp->cl_clientid,
6230 .renew = 1, /* append RENEW */
6231 };
6232 struct nfs4_fsid_present_res res = {
6233 .renew = 1,
6234 };
6235 struct rpc_message msg = {
6236 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT],
6237 .rpc_argp = &args,
6238 .rpc_resp = &res,
6239 .rpc_cred = cred,
6240 };
6241 unsigned long now = jiffies;
6242 int status;
6243
6244 res.fh = nfs_alloc_fhandle();
6245 if (res.fh == NULL)
6246 return -ENOMEM;
6247
6248 nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
6249 nfs4_set_sequence_privileged(&args.seq_args);
6250 status = nfs4_call_sync_sequence(clnt, server, &msg,
6251 &args.seq_args, &res.seq_res);
6252 nfs_free_fhandle(res.fh);
6253 if (status)
6254 return status;
6255
6256 do_renew_lease(clp, now);
6257 return 0;
6258}
6259
6260#ifdef CONFIG_NFS_V4_1
6261
6262/*
6263 * This operation also signals the server that this client is
6264 * performing "lease moved" recovery. The server can stop asserting
6265 * SEQ4_STATUS_LEASE_MOVED for this client. The client ID performing
6266 * this operation is identified in the SEQUENCE operation in this
6267 * compound.
6268 */
6269static int _nfs41_proc_fsid_present(struct inode *inode, struct rpc_cred *cred)
6270{
6271 struct nfs_server *server = NFS_SERVER(inode);
6272 struct rpc_clnt *clnt = server->client;
6273 struct nfs4_fsid_present_arg args = {
6274 .fh = NFS_FH(inode),
6275 };
6276 struct nfs4_fsid_present_res res = {
6277 };
6278 struct rpc_message msg = {
6279 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FSID_PRESENT],
6280 .rpc_argp = &args,
6281 .rpc_resp = &res,
6282 .rpc_cred = cred,
6283 };
6284 int status;
6285
6286 res.fh = nfs_alloc_fhandle();
6287 if (res.fh == NULL)
6288 return -ENOMEM;
6289
6290 nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
6291 nfs4_set_sequence_privileged(&args.seq_args);
6292 status = nfs4_call_sync_sequence(clnt, server, &msg,
6293 &args.seq_args, &res.seq_res);
6294 nfs_free_fhandle(res.fh);
6295 if (status == NFS4_OK &&
6296 res.seq_res.sr_status_flags & SEQ4_STATUS_LEASE_MOVED)
6297 status = -NFS4ERR_LEASE_MOVED;
6298 return status;
6299}
6300
6301#endif /* CONFIG_NFS_V4_1 */
6302
6303/**
6304 * nfs4_proc_fsid_present - Is this FSID present or absent on server?
6305 * @inode: inode on FSID to check
6306 * @cred: credential to use for this operation
6307 *
6308 * Server indicates whether the FSID is present, moved, or not
6309 * recognized. This operation is necessary to clear a LEASE_MOVED
6310 * condition for this client ID.
6311 *
6312 * Returns NFS4_OK if the FSID is present on this server,
6313 * -NFS4ERR_MOVED if the FSID is no longer present, a negative
6314 * NFS4ERR code if some error occurred on the server, or a
6315 * negative errno if a local failure occurred.
6316 */
6317int nfs4_proc_fsid_present(struct inode *inode, struct rpc_cred *cred)
6318{
6319 struct nfs_server *server = NFS_SERVER(inode);
6320 struct nfs_client *clp = server->nfs_client;
6321 const struct nfs4_mig_recovery_ops *ops =
6322 clp->cl_mvops->mig_recovery_ops;
6323 struct nfs4_exception exception = { };
6324 int status;
6325
6326 dprintk("%s: FSID %llx:%llx on \"%s\"\n", __func__,
6327 (unsigned long long)server->fsid.major,
6328 (unsigned long long)server->fsid.minor,
6329 clp->cl_hostname);
6330 nfs_display_fhandle(NFS_FH(inode), __func__);
6331
6332 do {
6333 status = ops->fsid_present(inode, cred);
6334 if (status != -NFS4ERR_DELAY)
6335 break;
6336 nfs4_handle_exception(server, status, &exception);
6337 } while (exception.retry);
6338 return status;
6339}
6340
Andy Adamson5ec16a82013-08-08 10:57:55 -04006341/**
Weston Andros Adamsona5250de2013-09-03 15:18:49 -04006342 * If 'use_integrity' is true and the state managment nfs_client
6343 * cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
6344 * and the machine credential as per RFC3530bis and RFC5661 Security
6345 * Considerations sections. Otherwise, just use the user cred with the
6346 * filesystem's rpc_client.
Andy Adamson5ec16a82013-08-08 10:57:55 -04006347 */
Weston Andros Adamsona5250de2013-09-03 15:18:49 -04006348static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors, bool use_integrity)
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00006349{
6350 int status;
6351 struct nfs4_secinfo_arg args = {
6352 .dir_fh = NFS_FH(dir),
6353 .name = name,
6354 };
6355 struct nfs4_secinfo_res res = {
6356 .flavors = flavors,
6357 };
6358 struct rpc_message msg = {
6359 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO],
6360 .rpc_argp = &args,
6361 .rpc_resp = &res,
6362 };
Weston Andros Adamsona5250de2013-09-03 15:18:49 -04006363 struct rpc_clnt *clnt = NFS_SERVER(dir)->client;
Weston Andros Adamson7cb852d2013-09-10 18:44:31 -04006364 struct rpc_cred *cred = NULL;
Weston Andros Adamsona5250de2013-09-03 15:18:49 -04006365
6366 if (use_integrity) {
6367 clnt = NFS_SERVER(dir)->nfs_client->cl_rpcclient;
Weston Andros Adamson7cb852d2013-09-10 18:44:31 -04006368 cred = nfs4_get_clid_cred(NFS_SERVER(dir)->nfs_client);
6369 msg.rpc_cred = cred;
Weston Andros Adamsona5250de2013-09-03 15:18:49 -04006370 }
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00006371
6372 dprintk("NFS call secinfo %s\n", name->name);
Weston Andros Adamson8b5bee22013-08-13 16:37:35 -04006373
6374 nfs4_state_protect(NFS_SERVER(dir)->nfs_client,
6375 NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg);
6376
Weston Andros Adamsona5250de2013-09-03 15:18:49 -04006377 status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args,
6378 &res.seq_res, 0);
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00006379 dprintk("NFS reply secinfo: %d\n", status);
Weston Andros Adamsona5250de2013-09-03 15:18:49 -04006380
Weston Andros Adamson7cb852d2013-09-10 18:44:31 -04006381 if (cred)
6382 put_rpccred(cred);
Weston Andros Adamsona5250de2013-09-03 15:18:49 -04006383
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00006384 return status;
6385}
6386
Bryan Schumaker72de53e2012-04-27 13:27:40 -04006387int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name,
6388 struct nfs4_secinfo_flavors *flavors)
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00006389{
6390 struct nfs4_exception exception = { };
6391 int err;
6392 do {
Weston Andros Adamsona5250de2013-09-03 15:18:49 -04006393 err = -NFS4ERR_WRONGSEC;
6394
6395 /* try to use integrity protection with machine cred */
6396 if (_nfs4_is_integrity_protected(NFS_SERVER(dir)->nfs_client))
6397 err = _nfs4_proc_secinfo(dir, name, flavors, true);
6398
6399 /*
6400 * if unable to use integrity protection, or SECINFO with
6401 * integrity protection returns NFS4ERR_WRONGSEC (which is
6402 * disallowed by spec, but exists in deployed servers) use
6403 * the current filesystem's rpc_client and the user cred.
6404 */
6405 if (err == -NFS4ERR_WRONGSEC)
6406 err = _nfs4_proc_secinfo(dir, name, flavors, false);
6407
Trond Myklebust078ea3d2013-08-12 16:45:55 -04006408 trace_nfs4_secinfo(dir, name, err);
6409 err = nfs4_handle_exception(NFS_SERVER(dir), err,
Bryan Schumaker5a5ea0d2011-03-24 17:12:29 +00006410 &exception);
6411 } while (exception.retry);
6412 return err;
6413}
6414
Andy Adamson557134a2009-04-01 09:21:53 -04006415#ifdef CONFIG_NFS_V4_1
Benny Halevy99fe60d2009-04-01 09:22:29 -04006416/*
Andy Adamson357f54d2010-12-14 10:11:57 -05006417 * Check the exchange flags returned by the server for invalid flags, having
6418 * both PNFS and NON_PNFS flags set, and not having one of NON_PNFS, PNFS, or
6419 * DS flags set.
6420 */
6421static int nfs4_check_cl_exchange_flags(u32 flags)
6422{
6423 if (flags & ~EXCHGID4_FLAG_MASK_R)
6424 goto out_inval;
6425 if ((flags & EXCHGID4_FLAG_USE_PNFS_MDS) &&
6426 (flags & EXCHGID4_FLAG_USE_NON_PNFS))
6427 goto out_inval;
6428 if (!(flags & (EXCHGID4_FLAG_MASK_PNFS)))
6429 goto out_inval;
6430 return NFS_OK;
6431out_inval:
6432 return -NFS4ERR_INVAL;
6433}
6434
Weston Andros Adamson78fe0f42011-05-31 19:05:47 -04006435static bool
Chuck Lever79d4e1f2012-05-21 22:44:31 -04006436nfs41_same_server_scope(struct nfs41_server_scope *a,
6437 struct nfs41_server_scope *b)
Weston Andros Adamson78fe0f42011-05-31 19:05:47 -04006438{
6439 if (a->server_scope_sz == b->server_scope_sz &&
6440 memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0)
6441 return true;
6442
6443 return false;
6444}
6445
Andy Adamson357f54d2010-12-14 10:11:57 -05006446/*
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04006447 * nfs4_proc_bind_conn_to_session()
6448 *
6449 * The 4.1 client currently uses the same TCP connection for the
6450 * fore and backchannel.
6451 */
Trond Myklebust2cf047c2012-05-25 17:57:41 -04006452int nfs4_proc_bind_conn_to_session(struct nfs_client *clp, struct rpc_cred *cred)
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04006453{
6454 int status;
6455 struct nfs41_bind_conn_to_session_res res;
6456 struct rpc_message msg = {
6457 .rpc_proc =
6458 &nfs4_procedures[NFSPROC4_CLNT_BIND_CONN_TO_SESSION],
6459 .rpc_argp = clp,
6460 .rpc_resp = &res,
Trond Myklebust2cf047c2012-05-25 17:57:41 -04006461 .rpc_cred = cred,
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04006462 };
6463
6464 dprintk("--> %s\n", __func__);
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04006465
6466 res.session = kzalloc(sizeof(struct nfs4_session), GFP_NOFS);
6467 if (unlikely(res.session == NULL)) {
6468 status = -ENOMEM;
6469 goto out;
6470 }
6471
6472 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
Trond Myklebustc6d01c62013-08-09 11:51:26 -04006473 trace_nfs4_bind_conn_to_session(clp, status);
Weston Andros Adamson7c44f1ae2012-05-24 13:22:50 -04006474 if (status == 0) {
6475 if (memcmp(res.session->sess_id.data,
6476 clp->cl_session->sess_id.data, NFS4_MAX_SESSIONID_LEN)) {
6477 dprintk("NFS: %s: Session ID mismatch\n", __func__);
6478 status = -EIO;
6479 goto out_session;
6480 }
6481 if (res.dir != NFS4_CDFS4_BOTH) {
6482 dprintk("NFS: %s: Unexpected direction from server\n",
6483 __func__);
6484 status = -EIO;
6485 goto out_session;
6486 }
6487 if (res.use_conn_in_rdma_mode) {
6488 dprintk("NFS: %s: Server returned RDMA mode = true\n",
6489 __func__);
6490 status = -EIO;
6491 goto out_session;
6492 }
6493 }
6494out_session:
6495 kfree(res.session);
6496out:
6497 dprintk("<-- %s status= %d\n", __func__, status);
6498 return status;
6499}
6500
6501/*
Weston Andros Adamsonfa940722013-08-13 16:37:34 -04006502 * Minimum set of SP4_MACH_CRED operations from RFC 5661 in the enforce map
6503 * and operations we'd like to see to enable certain features in the allow map
Benny Halevy99fe60d2009-04-01 09:22:29 -04006504 */
Weston Andros Adamson2031cd12013-08-13 16:37:32 -04006505static const struct nfs41_state_protection nfs4_sp4_mach_cred_request = {
6506 .how = SP4_MACH_CRED,
6507 .enforce.u.words = {
6508 [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) |
6509 1 << (OP_EXCHANGE_ID - 32) |
6510 1 << (OP_CREATE_SESSION - 32) |
6511 1 << (OP_DESTROY_SESSION - 32) |
6512 1 << (OP_DESTROY_CLIENTID - 32)
Weston Andros Adamsonfa940722013-08-13 16:37:34 -04006513 },
6514 .allow.u.words = {
6515 [0] = 1 << (OP_CLOSE) |
Weston Andros Adamsona0279622013-09-10 18:44:30 -04006516 1 << (OP_LOCKU) |
6517 1 << (OP_COMMIT),
Weston Andros Adamson8b5bee22013-08-13 16:37:35 -04006518 [1] = 1 << (OP_SECINFO - 32) |
Weston Andros Adamson3787d502013-08-13 16:37:36 -04006519 1 << (OP_SECINFO_NO_NAME - 32) |
6520 1 << (OP_TEST_STATEID - 32) |
Weston Andros Adamsona0279622013-09-10 18:44:30 -04006521 1 << (OP_FREE_STATEID - 32) |
6522 1 << (OP_WRITE - 32)
Weston Andros Adamson2031cd12013-08-13 16:37:32 -04006523 }
6524};
6525
6526/*
6527 * Select the state protection mode for client `clp' given the server results
6528 * from exchange_id in `sp'.
6529 *
6530 * Returns 0 on success, negative errno otherwise.
6531 */
6532static int nfs4_sp4_select_mode(struct nfs_client *clp,
6533 struct nfs41_state_protection *sp)
6534{
6535 static const u32 supported_enforce[NFS4_OP_MAP_NUM_WORDS] = {
6536 [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) |
6537 1 << (OP_EXCHANGE_ID - 32) |
6538 1 << (OP_CREATE_SESSION - 32) |
6539 1 << (OP_DESTROY_SESSION - 32) |
6540 1 << (OP_DESTROY_CLIENTID - 32)
6541 };
6542 unsigned int i;
6543
6544 if (sp->how == SP4_MACH_CRED) {
6545 /* Print state protect result */
6546 dfprintk(MOUNT, "Server SP4_MACH_CRED support:\n");
6547 for (i = 0; i <= LAST_NFS4_OP; i++) {
6548 if (test_bit(i, sp->enforce.u.longs))
6549 dfprintk(MOUNT, " enforce op %d\n", i);
6550 if (test_bit(i, sp->allow.u.longs))
6551 dfprintk(MOUNT, " allow op %d\n", i);
6552 }
6553
6554 /* make sure nothing is on enforce list that isn't supported */
6555 for (i = 0; i < NFS4_OP_MAP_NUM_WORDS; i++) {
6556 if (sp->enforce.u.words[i] & ~supported_enforce[i]) {
6557 dfprintk(MOUNT, "sp4_mach_cred: disabled\n");
6558 return -EINVAL;
6559 }
6560 }
6561
6562 /*
6563 * Minimal mode - state operations are allowed to use machine
6564 * credential. Note this already happens by default, so the
6565 * client doesn't have to do anything more than the negotiation.
6566 *
6567 * NOTE: we don't care if EXCHANGE_ID is in the list -
6568 * we're already using the machine cred for exchange_id
6569 * and will never use a different cred.
6570 */
6571 if (test_bit(OP_BIND_CONN_TO_SESSION, sp->enforce.u.longs) &&
6572 test_bit(OP_CREATE_SESSION, sp->enforce.u.longs) &&
6573 test_bit(OP_DESTROY_SESSION, sp->enforce.u.longs) &&
6574 test_bit(OP_DESTROY_CLIENTID, sp->enforce.u.longs)) {
6575 dfprintk(MOUNT, "sp4_mach_cred:\n");
6576 dfprintk(MOUNT, " minimal mode enabled\n");
6577 set_bit(NFS_SP4_MACH_CRED_MINIMAL, &clp->cl_sp4_flags);
6578 } else {
6579 dfprintk(MOUNT, "sp4_mach_cred: disabled\n");
6580 return -EINVAL;
6581 }
Weston Andros Adamsonfa940722013-08-13 16:37:34 -04006582
6583 if (test_bit(OP_CLOSE, sp->allow.u.longs) &&
6584 test_bit(OP_LOCKU, sp->allow.u.longs)) {
6585 dfprintk(MOUNT, " cleanup mode enabled\n");
6586 set_bit(NFS_SP4_MACH_CRED_CLEANUP, &clp->cl_sp4_flags);
6587 }
Weston Andros Adamson8b5bee22013-08-13 16:37:35 -04006588
6589 if (test_bit(OP_SECINFO, sp->allow.u.longs) &&
6590 test_bit(OP_SECINFO_NO_NAME, sp->allow.u.longs)) {
6591 dfprintk(MOUNT, " secinfo mode enabled\n");
6592 set_bit(NFS_SP4_MACH_CRED_SECINFO, &clp->cl_sp4_flags);
6593 }
Weston Andros Adamson3787d502013-08-13 16:37:36 -04006594
6595 if (test_bit(OP_TEST_STATEID, sp->allow.u.longs) &&
6596 test_bit(OP_FREE_STATEID, sp->allow.u.longs)) {
6597 dfprintk(MOUNT, " stateid mode enabled\n");
6598 set_bit(NFS_SP4_MACH_CRED_STATEID, &clp->cl_sp4_flags);
6599 }
Weston Andros Adamson8c21c622013-08-13 16:37:37 -04006600
6601 if (test_bit(OP_WRITE, sp->allow.u.longs)) {
6602 dfprintk(MOUNT, " write mode enabled\n");
6603 set_bit(NFS_SP4_MACH_CRED_WRITE, &clp->cl_sp4_flags);
6604 }
6605
6606 if (test_bit(OP_COMMIT, sp->allow.u.longs)) {
6607 dfprintk(MOUNT, " commit mode enabled\n");
6608 set_bit(NFS_SP4_MACH_CRED_COMMIT, &clp->cl_sp4_flags);
6609 }
Weston Andros Adamson2031cd12013-08-13 16:37:32 -04006610 }
6611
6612 return 0;
6613}
6614
6615/*
6616 * _nfs4_proc_exchange_id()
6617 *
6618 * Wrapper for EXCHANGE_ID operation.
6619 */
6620static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred,
6621 u32 sp4_how)
Benny Halevy99fe60d2009-04-01 09:22:29 -04006622{
6623 nfs4_verifier verifier;
6624 struct nfs41_exchange_id_args args = {
Chuck Levercd937102012-03-02 17:14:31 -05006625 .verifier = &verifier,
Benny Halevy99fe60d2009-04-01 09:22:29 -04006626 .client = clp,
Chuck Levercd3fade2013-10-17 14:14:04 -04006627#ifdef CONFIG_NFS_V4_1_MIGRATION
Trond Myklebust4f0b4292013-05-20 12:24:03 -04006628 .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER |
Chuck Levercd3fade2013-10-17 14:14:04 -04006629 EXCHGID4_FLAG_BIND_PRINC_STATEID |
6630 EXCHGID4_FLAG_SUPP_MOVED_MIGR,
6631#else
6632 .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER |
6633 EXCHGID4_FLAG_BIND_PRINC_STATEID,
6634#endif
Benny Halevy99fe60d2009-04-01 09:22:29 -04006635 };
6636 struct nfs41_exchange_id_res res = {
Trond Myklebust32b01312012-05-26 13:41:04 -04006637 0
Benny Halevy99fe60d2009-04-01 09:22:29 -04006638 };
6639 int status;
6640 struct rpc_message msg = {
6641 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID],
6642 .rpc_argp = &args,
6643 .rpc_resp = &res,
6644 .rpc_cred = cred,
6645 };
Benny Halevy99fe60d2009-04-01 09:22:29 -04006646
Chuck Leverf0920752012-05-21 22:45:41 -04006647 nfs4_init_boot_verifier(clp, &verifier);
Chuck Levere984a552012-09-14 17:24:21 -04006648 args.id_len = nfs4_init_uniform_client_string(clp, args.id,
6649 sizeof(args.id));
Chuck Lever6bbb4ae2012-07-11 16:30:59 -04006650 dprintk("NFS call exchange_id auth=%s, '%.*s'\n",
6651 clp->cl_rpcclient->cl_auth->au_ops->au_name,
6652 args.id_len, args.id);
Benny Halevy99fe60d2009-04-01 09:22:29 -04006653
Chuck Leveracdeb692012-05-21 22:46:16 -04006654 res.server_owner = kzalloc(sizeof(struct nfs41_server_owner),
Trond Myklebustbbafffd2012-05-24 16:31:39 -04006655 GFP_NOFS);
Chuck Leveracdeb692012-05-21 22:46:16 -04006656 if (unlikely(res.server_owner == NULL)) {
Weston Andros Adamsonabe9a6d2012-02-16 11:17:05 -05006657 status = -ENOMEM;
6658 goto out;
6659 }
Weston Andros Adamson78fe0f42011-05-31 19:05:47 -04006660
Chuck Lever79d4e1f2012-05-21 22:44:31 -04006661 res.server_scope = kzalloc(sizeof(struct nfs41_server_scope),
Trond Myklebustbbafffd2012-05-24 16:31:39 -04006662 GFP_NOFS);
Chuck Lever177313f2012-05-21 22:44:58 -04006663 if (unlikely(res.server_scope == NULL)) {
Benny Halevy99fe60d2009-04-01 09:22:29 -04006664 status = -ENOMEM;
Chuck Leveracdeb692012-05-21 22:46:16 -04006665 goto out_server_owner;
Benny Halevy99fe60d2009-04-01 09:22:29 -04006666 }
6667
Trond Myklebustbbafffd2012-05-24 16:31:39 -04006668 res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS);
Chuck Lever177313f2012-05-21 22:44:58 -04006669 if (unlikely(res.impl_id == NULL)) {
Weston Andros Adamson7d2ed9a2012-02-17 15:20:26 -05006670 status = -ENOMEM;
6671 goto out_server_scope;
6672 }
6673
Weston Andros Adamson2031cd12013-08-13 16:37:32 -04006674 switch (sp4_how) {
6675 case SP4_NONE:
6676 args.state_protect.how = SP4_NONE;
6677 break;
6678
6679 case SP4_MACH_CRED:
6680 args.state_protect = nfs4_sp4_mach_cred_request;
6681 break;
6682
6683 default:
6684 /* unsupported! */
6685 WARN_ON_ONCE(1);
6686 status = -EINVAL;
6687 goto out_server_scope;
6688 }
6689
Trond Myklebust1bd714f2011-04-24 14:29:33 -04006690 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
Trond Myklebustc6d01c62013-08-09 11:51:26 -04006691 trace_nfs4_exchange_id(clp, status);
Chuck Lever177313f2012-05-21 22:44:58 -04006692 if (status == 0)
Trond Myklebust32b01312012-05-26 13:41:04 -04006693 status = nfs4_check_cl_exchange_flags(res.flags);
Weston Andros Adamson78fe0f42011-05-31 19:05:47 -04006694
Weston Andros Adamson2031cd12013-08-13 16:37:32 -04006695 if (status == 0)
6696 status = nfs4_sp4_select_mode(clp, &res.state_protect);
6697
Chuck Lever177313f2012-05-21 22:44:58 -04006698 if (status == 0) {
Trond Myklebust32b01312012-05-26 13:41:04 -04006699 clp->cl_clientid = res.clientid;
6700 clp->cl_exchange_flags = (res.flags & ~EXCHGID4_FLAG_CONFIRMED_R);
6701 if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R))
6702 clp->cl_seqid = res.seqid;
6703
Chuck Leveracdeb692012-05-21 22:46:16 -04006704 kfree(clp->cl_serverowner);
6705 clp->cl_serverowner = res.server_owner;
6706 res.server_owner = NULL;
Chuck Leveracdeb692012-05-21 22:46:16 -04006707
Weston Andros Adamson7d2ed9a2012-02-17 15:20:26 -05006708 /* use the most recent implementation id */
Chuck Lever59155542012-05-21 22:44:41 -04006709 kfree(clp->cl_implid);
6710 clp->cl_implid = res.impl_id;
Weston Andros Adamson7d2ed9a2012-02-17 15:20:26 -05006711
Chuck Lever177313f2012-05-21 22:44:58 -04006712 if (clp->cl_serverscope != NULL &&
Chuck Lever79d4e1f2012-05-21 22:44:31 -04006713 !nfs41_same_server_scope(clp->cl_serverscope,
Weston Andros Adamson78fe0f42011-05-31 19:05:47 -04006714 res.server_scope)) {
6715 dprintk("%s: server_scope mismatch detected\n",
6716 __func__);
6717 set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state);
Chuck Lever79d4e1f2012-05-21 22:44:31 -04006718 kfree(clp->cl_serverscope);
6719 clp->cl_serverscope = NULL;
Weston Andros Adamson78fe0f42011-05-31 19:05:47 -04006720 }
6721
Chuck Lever177313f2012-05-21 22:44:58 -04006722 if (clp->cl_serverscope == NULL) {
Chuck Lever79d4e1f2012-05-21 22:44:31 -04006723 clp->cl_serverscope = res.server_scope;
Weston Andros Adamsonabe9a6d2012-02-16 11:17:05 -05006724 goto out;
6725 }
Trond Myklebust32b01312012-05-26 13:41:04 -04006726 } else
6727 kfree(res.impl_id);
Weston Andros Adamson7d2ed9a2012-02-17 15:20:26 -05006728
Chuck Leveracdeb692012-05-21 22:46:16 -04006729out_server_owner:
6730 kfree(res.server_owner);
Weston Andros Adamson7d2ed9a2012-02-17 15:20:26 -05006731out_server_scope:
Weston Andros Adamsonabe9a6d2012-02-16 11:17:05 -05006732 kfree(res.server_scope);
6733out:
Chuck Lever177313f2012-05-21 22:44:58 -04006734 if (clp->cl_implid != NULL)
Chuck Lever6bbb4ae2012-07-11 16:30:59 -04006735 dprintk("NFS reply exchange_id: Server Implementation ID: "
Weston Andros Adamson7d2ed9a2012-02-17 15:20:26 -05006736 "domain: %s, name: %s, date: %llu,%u\n",
Chuck Lever6bbb4ae2012-07-11 16:30:59 -04006737 clp->cl_implid->domain, clp->cl_implid->name,
Chuck Lever59155542012-05-21 22:44:41 -04006738 clp->cl_implid->date.seconds,
6739 clp->cl_implid->date.nseconds);
Chuck Lever6bbb4ae2012-07-11 16:30:59 -04006740 dprintk("NFS reply exchange_id: %d\n", status);
Benny Halevy99fe60d2009-04-01 09:22:29 -04006741 return status;
6742}
6743
Weston Andros Adamson2031cd12013-08-13 16:37:32 -04006744/*
6745 * nfs4_proc_exchange_id()
6746 *
6747 * Returns zero, a negative errno, or a negative NFS4ERR status code.
6748 *
6749 * Since the clientid has expired, all compounds using sessions
6750 * associated with the stale clientid will be returning
6751 * NFS4ERR_BADSESSION in the sequence operation, and will therefore
6752 * be in some phase of session reset.
6753 *
6754 * Will attempt to negotiate SP4_MACH_CRED if krb5i / krb5p auth is used.
6755 */
6756int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
6757{
6758 rpc_authflavor_t authflavor = clp->cl_rpcclient->cl_auth->au_flavor;
6759 int status;
6760
6761 /* try SP4_MACH_CRED if krb5i/p */
6762 if (authflavor == RPC_AUTH_GSS_KRB5I ||
6763 authflavor == RPC_AUTH_GSS_KRB5P) {
6764 status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED);
6765 if (!status)
6766 return 0;
6767 }
6768
6769 /* try SP4_NONE */
6770 return _nfs4_proc_exchange_id(clp, cred, SP4_NONE);
6771}
6772
Trond Myklebust66245532012-05-25 17:18:09 -04006773static int _nfs4_proc_destroy_clientid(struct nfs_client *clp,
6774 struct rpc_cred *cred)
6775{
6776 struct rpc_message msg = {
6777 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_CLIENTID],
6778 .rpc_argp = clp,
6779 .rpc_cred = cred,
6780 };
6781 int status;
6782
6783 status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
Trond Myklebustc6d01c62013-08-09 11:51:26 -04006784 trace_nfs4_destroy_clientid(clp, status);
Trond Myklebust66245532012-05-25 17:18:09 -04006785 if (status)
Trond Myklebust02c67522012-06-07 13:45:53 -04006786 dprintk("NFS: Got error %d from the server %s on "
Trond Myklebust66245532012-05-25 17:18:09 -04006787 "DESTROY_CLIENTID.", status, clp->cl_hostname);
6788 return status;
6789}
6790
6791static int nfs4_proc_destroy_clientid(struct nfs_client *clp,
6792 struct rpc_cred *cred)
6793{
6794 unsigned int loop;
6795 int ret;
6796
6797 for (loop = NFS4_MAX_LOOP_ON_RECOVER; loop != 0; loop--) {
6798 ret = _nfs4_proc_destroy_clientid(clp, cred);
6799 switch (ret) {
6800 case -NFS4ERR_DELAY:
6801 case -NFS4ERR_CLIENTID_BUSY:
6802 ssleep(1);
6803 break;
6804 default:
6805 return ret;
6806 }
6807 }
6808 return 0;
6809}
6810
6811int nfs4_destroy_clientid(struct nfs_client *clp)
6812{
6813 struct rpc_cred *cred;
6814 int ret = 0;
6815
6816 if (clp->cl_mvops->minor_version < 1)
6817 goto out;
6818 if (clp->cl_exchange_flags == 0)
6819 goto out;
Chuck Lever05f4c352012-09-14 17:24:32 -04006820 if (clp->cl_preserve_clid)
6821 goto out;
Chuck Lever73d8bde2013-07-24 12:28:37 -04006822 cred = nfs4_get_clid_cred(clp);
Trond Myklebust66245532012-05-25 17:18:09 -04006823 ret = nfs4_proc_destroy_clientid(clp, cred);
6824 if (cred)
6825 put_rpccred(cred);
6826 switch (ret) {
6827 case 0:
6828 case -NFS4ERR_STALE_CLIENTID:
6829 clp->cl_exchange_flags = 0;
6830 }
6831out:
6832 return ret;
6833}
6834
Andy Adamson2050f0c2009-04-01 09:22:30 -04006835struct nfs4_get_lease_time_data {
6836 struct nfs4_get_lease_time_args *args;
6837 struct nfs4_get_lease_time_res *res;
6838 struct nfs_client *clp;
6839};
6840
6841static void nfs4_get_lease_time_prepare(struct rpc_task *task,
6842 void *calldata)
6843{
Andy Adamson2050f0c2009-04-01 09:22:30 -04006844 struct nfs4_get_lease_time_data *data =
6845 (struct nfs4_get_lease_time_data *)calldata;
6846
6847 dprintk("--> %s\n", __func__);
6848 /* just setup sequence, do not trigger session recovery
6849 since we're invoked within one */
Trond Myklebustd9afbd12012-10-22 20:28:44 -04006850 nfs41_setup_sequence(data->clp->cl_session,
6851 &data->args->la_seq_args,
6852 &data->res->lr_seq_res,
6853 task);
Andy Adamson2050f0c2009-04-01 09:22:30 -04006854 dprintk("<-- %s\n", __func__);
6855}
6856
6857/*
6858 * Called from nfs4_state_manager thread for session setup, so don't recover
6859 * from sequence operation or clientid errors.
6860 */
6861static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata)
6862{
6863 struct nfs4_get_lease_time_data *data =
6864 (struct nfs4_get_lease_time_data *)calldata;
6865
6866 dprintk("--> %s\n", __func__);
Trond Myklebust14516c32010-07-31 14:29:06 -04006867 if (!nfs41_sequence_done(task, &data->res->lr_seq_res))
6868 return;
Andy Adamson2050f0c2009-04-01 09:22:30 -04006869 switch (task->tk_status) {
6870 case -NFS4ERR_DELAY:
6871 case -NFS4ERR_GRACE:
6872 dprintk("%s Retry: tk_status %d\n", __func__, task->tk_status);
6873 rpc_delay(task, NFS4_POLL_RETRY_MIN);
6874 task->tk_status = 0;
Andy Adamsona8a4ae32011-05-03 13:43:03 -04006875 /* fall through */
6876 case -NFS4ERR_RETRY_UNCACHED_REP:
Trond Myklebustd00c5d42011-10-19 12:17:29 -07006877 rpc_restart_call_prepare(task);
Andy Adamson2050f0c2009-04-01 09:22:30 -04006878 return;
6879 }
Andy Adamson2050f0c2009-04-01 09:22:30 -04006880 dprintk("<-- %s\n", __func__);
6881}
6882
Trond Myklebust17280172012-03-11 13:11:00 -04006883static const struct rpc_call_ops nfs4_get_lease_time_ops = {
Andy Adamson2050f0c2009-04-01 09:22:30 -04006884 .rpc_call_prepare = nfs4_get_lease_time_prepare,
6885 .rpc_call_done = nfs4_get_lease_time_done,
6886};
6887
6888int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo)
6889{
6890 struct rpc_task *task;
6891 struct nfs4_get_lease_time_args args;
6892 struct nfs4_get_lease_time_res res = {
6893 .lr_fsinfo = fsinfo,
6894 };
6895 struct nfs4_get_lease_time_data data = {
6896 .args = &args,
6897 .res = &res,
6898 .clp = clp,
6899 };
6900 struct rpc_message msg = {
6901 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GET_LEASE_TIME],
6902 .rpc_argp = &args,
6903 .rpc_resp = &res,
6904 };
6905 struct rpc_task_setup task_setup = {
6906 .rpc_client = clp->cl_rpcclient,
6907 .rpc_message = &msg,
6908 .callback_ops = &nfs4_get_lease_time_ops,
Trond Myklebust1bd714f2011-04-24 14:29:33 -04006909 .callback_data = &data,
6910 .flags = RPC_TASK_TIMEOUT,
Andy Adamson2050f0c2009-04-01 09:22:30 -04006911 };
6912 int status;
6913
Chuck Levera9c92d62013-08-09 12:48:18 -04006914 nfs4_init_sequence(&args.la_seq_args, &res.lr_seq_res, 0);
Trond Myklebust8fe72ba2012-10-29 19:02:20 -04006915 nfs4_set_sequence_privileged(&args.la_seq_args);
Andy Adamson2050f0c2009-04-01 09:22:30 -04006916 dprintk("--> %s\n", __func__);
6917 task = rpc_run_task(&task_setup);
6918
6919 if (IS_ERR(task))
6920 status = PTR_ERR(task);
6921 else {
6922 status = task->tk_status;
6923 rpc_put_task(task);
6924 }
6925 dprintk("<-- %s return %d\n", __func__, status);
6926
6927 return status;
6928}
6929
Andy Adamsonfc931582009-04-01 09:22:31 -04006930/*
6931 * Initialize the values to be used by the client in CREATE_SESSION
6932 * If nfs4_init_session set the fore channel request and response sizes,
6933 * use them.
6934 *
6935 * Set the back channel max_resp_sz_cached to zero to force the client to
6936 * always set csa_cachethis to FALSE because the current implementation
6937 * of the back channel DRC only supports caching the CB_SEQUENCE operation.
6938 */
6939static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args)
6940{
Andy Adamson18aad3d2013-06-26 12:21:49 -04006941 unsigned int max_rqst_sz, max_resp_sz;
Andy Adamsonfc931582009-04-01 09:22:31 -04006942
Andy Adamson18aad3d2013-06-26 12:21:49 -04006943 max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead;
6944 max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead;
6945
Andy Adamsonfc931582009-04-01 09:22:31 -04006946 /* Fore channel attributes */
Andy Adamson18aad3d2013-06-26 12:21:49 -04006947 args->fc_attrs.max_rqst_sz = max_rqst_sz;
6948 args->fc_attrs.max_resp_sz = max_resp_sz;
Andy Adamsonfc931582009-04-01 09:22:31 -04006949 args->fc_attrs.max_ops = NFS4_MAX_OPS;
Trond Myklebustef159e92012-02-06 19:50:40 -05006950 args->fc_attrs.max_reqs = max_session_slots;
Andy Adamsonfc931582009-04-01 09:22:31 -04006951
6952 dprintk("%s: Fore Channel : max_rqst_sz=%u max_resp_sz=%u "
Mike Sager8e0d46e2009-12-17 12:06:26 -05006953 "max_ops=%u max_reqs=%u\n",
Andy Adamsonfc931582009-04-01 09:22:31 -04006954 __func__,
6955 args->fc_attrs.max_rqst_sz, args->fc_attrs.max_resp_sz,
Mike Sager8e0d46e2009-12-17 12:06:26 -05006956 args->fc_attrs.max_ops, args->fc_attrs.max_reqs);
Andy Adamsonfc931582009-04-01 09:22:31 -04006957
6958 /* Back channel attributes */
Andy Adamsonfc931582009-04-01 09:22:31 -04006959 args->bc_attrs.max_rqst_sz = PAGE_SIZE;
6960 args->bc_attrs.max_resp_sz = PAGE_SIZE;
6961 args->bc_attrs.max_resp_sz_cached = 0;
6962 args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS;
6963 args->bc_attrs.max_reqs = 1;
6964
6965 dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
6966 "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
6967 __func__,
6968 args->bc_attrs.max_rqst_sz, args->bc_attrs.max_resp_sz,
6969 args->bc_attrs.max_resp_sz_cached, args->bc_attrs.max_ops,
6970 args->bc_attrs.max_reqs);
6971}
6972
J. Bruce Fields43c2e882010-10-02 15:19:01 -04006973static int nfs4_verify_fore_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
Andy Adamson8d353012009-04-01 09:22:32 -04006974{
J. Bruce Fields43c2e882010-10-02 15:19:01 -04006975 struct nfs4_channel_attrs *sent = &args->fc_attrs;
6976 struct nfs4_channel_attrs *rcvd = &session->fc_attrs;
6977
J. Bruce Fields43c2e882010-10-02 15:19:01 -04006978 if (rcvd->max_resp_sz > sent->max_resp_sz)
6979 return -EINVAL;
6980 /*
6981 * Our requested max_ops is the minimum we need; we're not
6982 * prepared to break up compounds into smaller pieces than that.
6983 * So, no point even trying to continue if the server won't
6984 * cooperate:
6985 */
6986 if (rcvd->max_ops < sent->max_ops)
6987 return -EINVAL;
6988 if (rcvd->max_reqs == 0)
6989 return -EINVAL;
Vitaliy Gusevb4b9a0c2012-02-15 19:38:25 +04006990 if (rcvd->max_reqs > NFS4_MAX_SLOT_TABLE)
6991 rcvd->max_reqs = NFS4_MAX_SLOT_TABLE;
J. Bruce Fields43c2e882010-10-02 15:19:01 -04006992 return 0;
Andy Adamson8d353012009-04-01 09:22:32 -04006993}
6994
J. Bruce Fields43c2e882010-10-02 15:19:01 -04006995static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args, struct nfs4_session *session)
6996{
6997 struct nfs4_channel_attrs *sent = &args->bc_attrs;
6998 struct nfs4_channel_attrs *rcvd = &session->bc_attrs;
Andy Adamson8d353012009-04-01 09:22:32 -04006999
J. Bruce Fields43c2e882010-10-02 15:19:01 -04007000 if (rcvd->max_rqst_sz > sent->max_rqst_sz)
7001 return -EINVAL;
7002 if (rcvd->max_resp_sz < sent->max_resp_sz)
7003 return -EINVAL;
7004 if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached)
7005 return -EINVAL;
7006 /* These would render the backchannel useless: */
Vitaliy Gusevb4b9a0c2012-02-15 19:38:25 +04007007 if (rcvd->max_ops != sent->max_ops)
J. Bruce Fields43c2e882010-10-02 15:19:01 -04007008 return -EINVAL;
Vitaliy Gusevb4b9a0c2012-02-15 19:38:25 +04007009 if (rcvd->max_reqs != sent->max_reqs)
J. Bruce Fields43c2e882010-10-02 15:19:01 -04007010 return -EINVAL;
7011 return 0;
7012}
Andy Adamson8d353012009-04-01 09:22:32 -04007013
Andy Adamson8d353012009-04-01 09:22:32 -04007014static int nfs4_verify_channel_attrs(struct nfs41_create_session_args *args,
7015 struct nfs4_session *session)
7016{
J. Bruce Fields43c2e882010-10-02 15:19:01 -04007017 int ret;
Andy Adamson8d353012009-04-01 09:22:32 -04007018
J. Bruce Fields43c2e882010-10-02 15:19:01 -04007019 ret = nfs4_verify_fore_channel_attrs(args, session);
7020 if (ret)
7021 return ret;
7022 return nfs4_verify_back_channel_attrs(args, session);
Andy Adamson8d353012009-04-01 09:22:32 -04007023}
7024
Trond Myklebust848f5bd2012-05-25 17:51:23 -04007025static int _nfs4_proc_create_session(struct nfs_client *clp,
7026 struct rpc_cred *cred)
Andy Adamsonfc931582009-04-01 09:22:31 -04007027{
7028 struct nfs4_session *session = clp->cl_session;
7029 struct nfs41_create_session_args args = {
7030 .client = clp,
7031 .cb_program = NFS4_CALLBACK,
7032 };
7033 struct nfs41_create_session_res res = {
7034 .client = clp,
7035 };
7036 struct rpc_message msg = {
7037 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE_SESSION],
7038 .rpc_argp = &args,
7039 .rpc_resp = &res,
Trond Myklebust848f5bd2012-05-25 17:51:23 -04007040 .rpc_cred = cred,
Andy Adamsonfc931582009-04-01 09:22:31 -04007041 };
7042 int status;
7043
7044 nfs4_init_channel_attrs(&args);
Andy Adamson0f914212009-04-01 09:23:16 -04007045 args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN);
Andy Adamsonfc931582009-04-01 09:22:31 -04007046
Trond Myklebust1bd714f2011-04-24 14:29:33 -04007047 status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
Trond Myklebustc6d01c62013-08-09 11:51:26 -04007048 trace_nfs4_create_session(clp, status);
Andy Adamsonfc931582009-04-01 09:22:31 -04007049
Trond Myklebust43095d32012-11-20 11:13:12 -05007050 if (!status) {
Andy Adamson8d353012009-04-01 09:22:32 -04007051 /* Verify the session's negotiated channel_attrs values */
7052 status = nfs4_verify_channel_attrs(&args, session);
Andy Adamsonfc931582009-04-01 09:22:31 -04007053 /* Increment the clientid slot sequence id */
7054 clp->cl_seqid++;
7055 }
7056
7057 return status;
7058}
7059
7060/*
7061 * Issues a CREATE_SESSION operation to the server.
7062 * It is the responsibility of the caller to verify the session is
7063 * expired before calling this routine.
7064 */
Trond Myklebust848f5bd2012-05-25 17:51:23 -04007065int nfs4_proc_create_session(struct nfs_client *clp, struct rpc_cred *cred)
Andy Adamsonfc931582009-04-01 09:22:31 -04007066{
7067 int status;
7068 unsigned *ptr;
Andy Adamsonfc931582009-04-01 09:22:31 -04007069 struct nfs4_session *session = clp->cl_session;
7070
7071 dprintk("--> %s clp=%p session=%p\n", __func__, clp, session);
7072
Trond Myklebust848f5bd2012-05-25 17:51:23 -04007073 status = _nfs4_proc_create_session(clp, cred);
Andy Adamsonfc931582009-04-01 09:22:31 -04007074 if (status)
7075 goto out;
7076
Andy Adamsonaacd5532011-11-09 13:58:21 -05007077 /* Init or reset the session slot tables */
7078 status = nfs4_setup_session_slot_tables(session);
7079 dprintk("slot table setup returned %d\n", status);
Andy Adamsonfc931582009-04-01 09:22:31 -04007080 if (status)
7081 goto out;
7082
7083 ptr = (unsigned *)&session->sess_id.data[0];
7084 dprintk("%s client>seqid %d sessionid %u:%u:%u:%u\n", __func__,
7085 clp->cl_seqid, ptr[0], ptr[1], ptr[2], ptr[3]);
Andy Adamsonfc931582009-04-01 09:22:31 -04007086out:
7087 dprintk("<-- %s\n", __func__);
7088 return status;
7089}
7090
Andy Adamson0f3e66c2009-04-01 09:22:34 -04007091/*
7092 * Issue the over-the-wire RPC DESTROY_SESSION.
7093 * The caller must serialize access to this routine.
7094 */
Trond Myklebust848f5bd2012-05-25 17:51:23 -04007095int nfs4_proc_destroy_session(struct nfs4_session *session,
7096 struct rpc_cred *cred)
Andy Adamson0f3e66c2009-04-01 09:22:34 -04007097{
Trond Myklebust848f5bd2012-05-25 17:51:23 -04007098 struct rpc_message msg = {
7099 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DESTROY_SESSION],
7100 .rpc_argp = session,
7101 .rpc_cred = cred,
7102 };
Andy Adamson0f3e66c2009-04-01 09:22:34 -04007103 int status = 0;
Andy Adamson0f3e66c2009-04-01 09:22:34 -04007104
7105 dprintk("--> nfs4_proc_destroy_session\n");
7106
7107 /* session is still being setup */
7108 if (session->clp->cl_cons_state != NFS_CS_READY)
7109 return status;
7110
Trond Myklebust1bd714f2011-04-24 14:29:33 -04007111 status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
Trond Myklebustc6d01c62013-08-09 11:51:26 -04007112 trace_nfs4_destroy_session(session->clp, status);
Andy Adamson0f3e66c2009-04-01 09:22:34 -04007113
7114 if (status)
Trond Myklebust08106ac2012-06-05 10:08:24 -04007115 dprintk("NFS: Got error %d from the server on DESTROY_SESSION. "
Andy Adamson0f3e66c2009-04-01 09:22:34 -04007116 "Session has been destroyed regardless...\n", status);
7117
7118 dprintk("<-- nfs4_proc_destroy_session\n");
7119 return status;
7120}
7121
Trond Myklebust7b38c362012-05-23 13:23:31 -04007122/*
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007123 * Renew the cl_session lease.
7124 */
Trond Myklebustd5f8d3f2010-06-16 09:52:25 -04007125struct nfs4_sequence_data {
7126 struct nfs_client *clp;
7127 struct nfs4_sequence_args args;
7128 struct nfs4_sequence_res res;
7129};
7130
Alexandros Batsakisdc96aef2010-02-05 03:45:04 -08007131static void nfs41_sequence_release(void *data)
7132{
Trond Myklebustd5f8d3f2010-06-16 09:52:25 -04007133 struct nfs4_sequence_data *calldata = data;
7134 struct nfs_client *clp = calldata->clp;
Alexandros Batsakisdc96aef2010-02-05 03:45:04 -08007135
Alexandros Batsakis71358402010-02-05 03:45:05 -08007136 if (atomic_read(&clp->cl_count) > 1)
7137 nfs4_schedule_state_renewal(clp);
7138 nfs_put_client(clp);
Trond Myklebustd5f8d3f2010-06-16 09:52:25 -04007139 kfree(calldata);
Alexandros Batsakisdc96aef2010-02-05 03:45:04 -08007140}
7141
Trond Myklebustaa5190d2010-06-16 09:52:25 -04007142static int nfs41_sequence_handle_errors(struct rpc_task *task, struct nfs_client *clp)
7143{
7144 switch(task->tk_status) {
7145 case -NFS4ERR_DELAY:
Trond Myklebustaa5190d2010-06-16 09:52:25 -04007146 rpc_delay(task, NFS4_POLL_RETRY_MAX);
7147 return -EAGAIN;
7148 default:
Trond Myklebust0400a6b2011-03-09 16:00:53 -05007149 nfs4_schedule_lease_recovery(clp);
Trond Myklebustaa5190d2010-06-16 09:52:25 -04007150 }
7151 return 0;
7152}
7153
Alexandros Batsakisdc96aef2010-02-05 03:45:04 -08007154static void nfs41_sequence_call_done(struct rpc_task *task, void *data)
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007155{
Trond Myklebustd5f8d3f2010-06-16 09:52:25 -04007156 struct nfs4_sequence_data *calldata = data;
7157 struct nfs_client *clp = calldata->clp;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007158
Trond Myklebust14516c32010-07-31 14:29:06 -04007159 if (!nfs41_sequence_done(task, task->tk_msg.rpc_resp))
7160 return;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007161
Trond Myklebustc6d01c62013-08-09 11:51:26 -04007162 trace_nfs4_sequence(clp, task->tk_status);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007163 if (task->tk_status < 0) {
7164 dprintk("%s ERROR %d\n", __func__, task->tk_status);
Alexandros Batsakis71358402010-02-05 03:45:05 -08007165 if (atomic_read(&clp->cl_count) == 1)
7166 goto out;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007167
Trond Myklebustaa5190d2010-06-16 09:52:25 -04007168 if (nfs41_sequence_handle_errors(task, clp) == -EAGAIN) {
7169 rpc_restart_call_prepare(task);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007170 return;
7171 }
7172 }
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007173 dprintk("%s rpc_cred %p\n", __func__, task->tk_msg.rpc_cred);
Alexandros Batsakis71358402010-02-05 03:45:05 -08007174out:
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007175 dprintk("<-- %s\n", __func__);
7176}
7177
7178static void nfs41_sequence_prepare(struct rpc_task *task, void *data)
7179{
Trond Myklebustd5f8d3f2010-06-16 09:52:25 -04007180 struct nfs4_sequence_data *calldata = data;
7181 struct nfs_client *clp = calldata->clp;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007182 struct nfs4_sequence_args *args;
7183 struct nfs4_sequence_res *res;
7184
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007185 args = task->tk_msg.rpc_argp;
7186 res = task->tk_msg.rpc_resp;
7187
Trond Myklebustd9afbd12012-10-22 20:28:44 -04007188 nfs41_setup_sequence(clp->cl_session, args, res, task);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007189}
7190
7191static const struct rpc_call_ops nfs41_sequence_ops = {
7192 .rpc_call_done = nfs41_sequence_call_done,
7193 .rpc_call_prepare = nfs41_sequence_prepare,
Alexandros Batsakisdc96aef2010-02-05 03:45:04 -08007194 .rpc_release = nfs41_sequence_release,
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007195};
7196
Trond Myklebust8fe72ba2012-10-29 19:02:20 -04007197static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp,
7198 struct rpc_cred *cred,
7199 bool is_privileged)
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007200{
Trond Myklebustd5f8d3f2010-06-16 09:52:25 -04007201 struct nfs4_sequence_data *calldata;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007202 struct rpc_message msg = {
7203 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEQUENCE],
7204 .rpc_cred = cred,
7205 };
Trond Myklebust71ac6da2010-06-16 09:52:26 -04007206 struct rpc_task_setup task_setup_data = {
7207 .rpc_client = clp->cl_rpcclient,
7208 .rpc_message = &msg,
Trond Myklebust8fe72ba2012-10-29 19:02:20 -04007209 .callback_ops = &nfs41_sequence_ops,
Trond Myklebustbc7a05c2013-04-08 17:50:28 -04007210 .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT,
Trond Myklebust71ac6da2010-06-16 09:52:26 -04007211 };
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007212
Alexandros Batsakis71358402010-02-05 03:45:05 -08007213 if (!atomic_inc_not_zero(&clp->cl_count))
Trond Myklebust71ac6da2010-06-16 09:52:26 -04007214 return ERR_PTR(-EIO);
Benny Halevydfb4f3092010-09-24 09:17:01 -04007215 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
Trond Myklebustd5f8d3f2010-06-16 09:52:25 -04007216 if (calldata == NULL) {
Alexandros Batsakis71358402010-02-05 03:45:05 -08007217 nfs_put_client(clp);
Trond Myklebust71ac6da2010-06-16 09:52:26 -04007218 return ERR_PTR(-ENOMEM);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007219 }
Chuck Levera9c92d62013-08-09 12:48:18 -04007220 nfs4_init_sequence(&calldata->args, &calldata->res, 0);
Trond Myklebust8fe72ba2012-10-29 19:02:20 -04007221 if (is_privileged)
7222 nfs4_set_sequence_privileged(&calldata->args);
Trond Myklebustd5f8d3f2010-06-16 09:52:25 -04007223 msg.rpc_argp = &calldata->args;
7224 msg.rpc_resp = &calldata->res;
7225 calldata->clp = clp;
Trond Myklebust71ac6da2010-06-16 09:52:26 -04007226 task_setup_data.callback_data = calldata;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007227
Trond Myklebust71ac6da2010-06-16 09:52:26 -04007228 return rpc_run_task(&task_setup_data);
7229}
7230
Trond Myklebust2f60ea62011-08-24 15:07:37 -04007231static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cred, unsigned renew_flags)
Trond Myklebust71ac6da2010-06-16 09:52:26 -04007232{
7233 struct rpc_task *task;
7234 int ret = 0;
7235
Trond Myklebust2f60ea62011-08-24 15:07:37 -04007236 if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0)
7237 return 0;
Trond Myklebust8fe72ba2012-10-29 19:02:20 -04007238 task = _nfs41_proc_sequence(clp, cred, false);
Trond Myklebust71ac6da2010-06-16 09:52:26 -04007239 if (IS_ERR(task))
7240 ret = PTR_ERR(task);
7241 else
Trond Myklebustbf294b42011-02-21 11:05:41 -08007242 rpc_put_task_async(task);
Trond Myklebust71ac6da2010-06-16 09:52:26 -04007243 dprintk("<-- %s status=%d\n", __func__, ret);
7244 return ret;
7245}
7246
7247static int nfs4_proc_sequence(struct nfs_client *clp, struct rpc_cred *cred)
7248{
7249 struct rpc_task *task;
7250 int ret;
7251
Trond Myklebust8fe72ba2012-10-29 19:02:20 -04007252 task = _nfs41_proc_sequence(clp, cred, true);
Trond Myklebust71ac6da2010-06-16 09:52:26 -04007253 if (IS_ERR(task)) {
7254 ret = PTR_ERR(task);
7255 goto out;
7256 }
7257 ret = rpc_wait_for_completion_task(task);
Trond Myklebustb4410c22011-03-09 16:00:55 -05007258 if (!ret) {
7259 struct nfs4_sequence_res *res = task->tk_msg.rpc_resp;
7260
7261 if (task->tk_status == 0)
7262 nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags);
Trond Myklebust71ac6da2010-06-16 09:52:26 -04007263 ret = task->tk_status;
Trond Myklebustb4410c22011-03-09 16:00:55 -05007264 }
Trond Myklebust71ac6da2010-06-16 09:52:26 -04007265 rpc_put_task(task);
7266out:
7267 dprintk("<-- %s status=%d\n", __func__, ret);
7268 return ret;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04007269}
7270
Ricardo Labiagafce5c832009-12-05 16:08:41 -05007271struct nfs4_reclaim_complete_data {
7272 struct nfs_client *clp;
7273 struct nfs41_reclaim_complete_args arg;
7274 struct nfs41_reclaim_complete_res res;
7275};
7276
7277static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data)
7278{
7279 struct nfs4_reclaim_complete_data *calldata = data;
7280
Trond Myklebustd9afbd12012-10-22 20:28:44 -04007281 nfs41_setup_sequence(calldata->clp->cl_session,
7282 &calldata->arg.seq_args,
7283 &calldata->res.seq_res,
7284 task);
Ricardo Labiagafce5c832009-12-05 16:08:41 -05007285}
7286
Trond Myklebustaa5190d2010-06-16 09:52:25 -04007287static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nfs_client *clp)
7288{
7289 switch(task->tk_status) {
7290 case 0:
7291 case -NFS4ERR_COMPLETE_ALREADY:
7292 case -NFS4ERR_WRONG_CRED: /* What to do here? */
7293 break;
7294 case -NFS4ERR_DELAY:
Trond Myklebustaa5190d2010-06-16 09:52:25 -04007295 rpc_delay(task, NFS4_POLL_RETRY_MAX);
Andy Adamsona8a4ae32011-05-03 13:43:03 -04007296 /* fall through */
7297 case -NFS4ERR_RETRY_UNCACHED_REP:
Trond Myklebustaa5190d2010-06-16 09:52:25 -04007298 return -EAGAIN;
7299 default:
Trond Myklebust0400a6b2011-03-09 16:00:53 -05007300 nfs4_schedule_lease_recovery(clp);
Trond Myklebustaa5190d2010-06-16 09:52:25 -04007301 }
7302 return 0;
7303}
7304
Ricardo Labiagafce5c832009-12-05 16:08:41 -05007305static void nfs4_reclaim_complete_done(struct rpc_task *task, void *data)
7306{
7307 struct nfs4_reclaim_complete_data *calldata = data;
7308 struct nfs_client *clp = calldata->clp;
7309 struct nfs4_sequence_res *res = &calldata->res.seq_res;
7310
7311 dprintk("--> %s\n", __func__);
Trond Myklebust14516c32010-07-31 14:29:06 -04007312 if (!nfs41_sequence_done(task, res))
7313 return;
Ricardo Labiagafce5c832009-12-05 16:08:41 -05007314
Trond Myklebustc6d01c62013-08-09 11:51:26 -04007315 trace_nfs4_reclaim_complete(clp, task->tk_status);
Trond Myklebustaa5190d2010-06-16 09:52:25 -04007316 if (nfs41_reclaim_complete_handle_errors(task, clp) == -EAGAIN) {
7317 rpc_restart_call_prepare(task);
7318 return;
7319 }
Ricardo Labiagafce5c832009-12-05 16:08:41 -05007320 dprintk("<-- %s\n", __func__);
7321}
7322
7323static void nfs4_free_reclaim_complete_data(void *data)
7324{
7325 struct nfs4_reclaim_complete_data *calldata = data;
7326
7327 kfree(calldata);
7328}
7329
7330static const struct rpc_call_ops nfs4_reclaim_complete_call_ops = {
7331 .rpc_call_prepare = nfs4_reclaim_complete_prepare,
7332 .rpc_call_done = nfs4_reclaim_complete_done,
7333 .rpc_release = nfs4_free_reclaim_complete_data,
7334};
7335
7336/*
7337 * Issue a global reclaim complete.
7338 */
Trond Myklebust965e9c22013-05-20 11:05:17 -04007339static int nfs41_proc_reclaim_complete(struct nfs_client *clp,
7340 struct rpc_cred *cred)
Ricardo Labiagafce5c832009-12-05 16:08:41 -05007341{
7342 struct nfs4_reclaim_complete_data *calldata;
7343 struct rpc_task *task;
7344 struct rpc_message msg = {
7345 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RECLAIM_COMPLETE],
Trond Myklebust965e9c22013-05-20 11:05:17 -04007346 .rpc_cred = cred,
Ricardo Labiagafce5c832009-12-05 16:08:41 -05007347 };
7348 struct rpc_task_setup task_setup_data = {
7349 .rpc_client = clp->cl_rpcclient,
7350 .rpc_message = &msg,
7351 .callback_ops = &nfs4_reclaim_complete_call_ops,
7352 .flags = RPC_TASK_ASYNC,
7353 };
7354 int status = -ENOMEM;
7355
7356 dprintk("--> %s\n", __func__);
Trond Myklebust8535b2b2010-05-13 12:51:01 -04007357 calldata = kzalloc(sizeof(*calldata), GFP_NOFS);
Ricardo Labiagafce5c832009-12-05 16:08:41 -05007358 if (calldata == NULL)
7359 goto out;
7360 calldata->clp = clp;
7361 calldata->arg.one_fs = 0;
Ricardo Labiagafce5c832009-12-05 16:08:41 -05007362
Chuck Levera9c92d62013-08-09 12:48:18 -04007363 nfs4_init_sequence(&calldata->arg.seq_args, &calldata->res.seq_res, 0);
Trond Myklebust8fe72ba2012-10-29 19:02:20 -04007364 nfs4_set_sequence_privileged(&calldata->arg.seq_args);
Ricardo Labiagafce5c832009-12-05 16:08:41 -05007365 msg.rpc_argp = &calldata->arg;
7366 msg.rpc_resp = &calldata->res;
7367 task_setup_data.callback_data = calldata;
7368 task = rpc_run_task(&task_setup_data);
Dan Carpenteracf82b82010-04-22 11:28:39 +02007369 if (IS_ERR(task)) {
Ricardo Labiagafce5c832009-12-05 16:08:41 -05007370 status = PTR_ERR(task);
Dan Carpenteracf82b82010-04-22 11:28:39 +02007371 goto out;
7372 }
Andy Adamsonc34c32e2011-03-09 13:13:46 -05007373 status = nfs4_wait_for_completion_rpc_task(task);
7374 if (status == 0)
7375 status = task->tk_status;
Ricardo Labiagafce5c832009-12-05 16:08:41 -05007376 rpc_put_task(task);
Dan Carpenteracf82b82010-04-22 11:28:39 +02007377 return 0;
Ricardo Labiagafce5c832009-12-05 16:08:41 -05007378out:
7379 dprintk("<-- %s status=%d\n", __func__, status);
7380 return status;
7381}
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007382
7383static void
7384nfs4_layoutget_prepare(struct rpc_task *task, void *calldata)
7385{
7386 struct nfs4_layoutget *lgp = calldata;
Fred Isamanc31663d2011-01-06 11:36:24 +00007387 struct nfs_server *server = NFS_SERVER(lgp->args.inode);
Trond Myklebust6ba7db32012-10-22 20:07:20 -04007388 struct nfs4_session *session = nfs4_get_session(server);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007389
7390 dprintk("--> %s\n", __func__);
Fred Isamanc31663d2011-01-06 11:36:24 +00007391 /* Note the is a race here, where a CB_LAYOUTRECALL can come in
7392 * right now covering the LAYOUTGET we are about to send.
7393 * However, that is not so catastrophic, and there seems
7394 * to be no way to prevent it completely.
7395 */
Trond Myklebust6ba7db32012-10-22 20:07:20 -04007396 if (nfs41_setup_sequence(session, &lgp->args.seq_args,
Trond Myklebust9d12b212012-01-17 22:04:25 -05007397 &lgp->res.seq_res, task))
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007398 return;
Fred Isamancf7d63f2011-01-06 11:36:25 +00007399 if (pnfs_choose_layoutget_stateid(&lgp->args.stateid,
7400 NFS_I(lgp->args.inode)->layout,
7401 lgp->args.ctx->state)) {
7402 rpc_exit(task, NFS4_OK);
Fred Isamancf7d63f2011-01-06 11:36:25 +00007403 }
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007404}
7405
7406static void nfs4_layoutget_done(struct rpc_task *task, void *calldata)
7407{
7408 struct nfs4_layoutget *lgp = calldata;
Trond Myklebustee314c22012-10-01 17:25:48 -07007409 struct inode *inode = lgp->args.inode;
7410 struct nfs_server *server = NFS_SERVER(inode);
7411 struct pnfs_layout_hdr *lo;
7412 struct nfs4_state *state = NULL;
Boaz Harroshed7e5422014-01-22 20:34:54 +02007413 unsigned long timeo, now, giveup;
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007414
Boaz Harroshed7e5422014-01-22 20:34:54 +02007415 dprintk("--> %s tk_status => %d\n", __func__, -task->tk_status);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007416
Trond Myklebust6ba7db32012-10-22 20:07:20 -04007417 if (!nfs41_sequence_done(task, &lgp->res.seq_res))
Trond Myklebustee314c22012-10-01 17:25:48 -07007418 goto out;
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007419
7420 switch (task->tk_status) {
7421 case 0:
Trond Myklebustee314c22012-10-01 17:25:48 -07007422 goto out;
Boaz Harroshed7e5422014-01-22 20:34:54 +02007423 /*
7424 * NFS4ERR_LAYOUTTRYLATER is a conflict with another client
7425 * (or clients) writing to the same RAID stripe
7426 */
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007427 case -NFS4ERR_LAYOUTTRYLATER:
Boaz Harroshed7e5422014-01-22 20:34:54 +02007428 /*
7429 * NFS4ERR_RECALLCONFLICT is when conflict with self (must recall
7430 * existing layout before getting a new one).
7431 */
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007432 case -NFS4ERR_RECALLCONFLICT:
Weston Andros Adamson30005122013-02-28 20:30:10 -05007433 timeo = rpc_get_timeout(task->tk_client);
7434 giveup = lgp->args.timestamp + timeo;
Boaz Harroshed7e5422014-01-22 20:34:54 +02007435 now = jiffies;
7436 if (time_after(giveup, now)) {
7437 unsigned long delay;
7438
7439 /* Delay for:
7440 * - Not less then NFS4_POLL_RETRY_MIN.
7441 * - One last time a jiffie before we give up
7442 * - exponential backoff (time_now minus start_attempt)
7443 */
7444 delay = max_t(unsigned long, NFS4_POLL_RETRY_MIN,
7445 min((giveup - now - 1),
7446 now - lgp->args.timestamp));
7447
7448 dprintk("%s: NFS4ERR_RECALLCONFLICT waiting %lu\n",
7449 __func__, delay);
7450 rpc_delay(task, delay);
7451 task->tk_status = 0;
7452 rpc_restart_call_prepare(task);
7453 goto out; /* Do not call nfs4_async_handle_error() */
7454 }
Trond Myklebustee314c22012-10-01 17:25:48 -07007455 break;
7456 case -NFS4ERR_EXPIRED:
7457 case -NFS4ERR_BAD_STATEID:
7458 spin_lock(&inode->i_lock);
7459 lo = NFS_I(inode)->layout;
7460 if (!lo || list_empty(&lo->plh_segs)) {
7461 spin_unlock(&inode->i_lock);
7462 /* If the open stateid was bad, then recover it. */
7463 state = lgp->args.ctx->state;
7464 } else {
7465 LIST_HEAD(head);
7466
7467 pnfs_mark_matching_lsegs_invalid(lo, &head, NULL);
7468 spin_unlock(&inode->i_lock);
7469 /* Mark the bad layout state as invalid, then
7470 * retry using the open stateid. */
7471 pnfs_free_lseg_list(&head);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007472 }
7473 }
Trond Myklebustee314c22012-10-01 17:25:48 -07007474 if (nfs4_async_handle_error(task, server, state) == -EAGAIN)
7475 rpc_restart_call_prepare(task);
7476out:
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007477 dprintk("<-- %s\n", __func__);
7478}
7479
Idan Kedar85541162012-08-02 11:47:10 +03007480static size_t max_response_pages(struct nfs_server *server)
7481{
7482 u32 max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz;
7483 return nfs_page_array_len(0, max_resp_sz);
7484}
7485
7486static void nfs4_free_pages(struct page **pages, size_t size)
7487{
7488 int i;
7489
7490 if (!pages)
7491 return;
7492
7493 for (i = 0; i < size; i++) {
7494 if (!pages[i])
7495 break;
7496 __free_page(pages[i]);
7497 }
7498 kfree(pages);
7499}
7500
7501static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags)
7502{
7503 struct page **pages;
7504 int i;
7505
7506 pages = kcalloc(size, sizeof(struct page *), gfp_flags);
7507 if (!pages) {
7508 dprintk("%s: can't alloc array of %zu pages\n", __func__, size);
7509 return NULL;
7510 }
7511
7512 for (i = 0; i < size; i++) {
7513 pages[i] = alloc_page(gfp_flags);
7514 if (!pages[i]) {
7515 dprintk("%s: failed to allocate page\n", __func__);
7516 nfs4_free_pages(pages, size);
7517 return NULL;
7518 }
7519 }
7520
7521 return pages;
7522}
7523
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007524static void nfs4_layoutget_release(void *calldata)
7525{
7526 struct nfs4_layoutget *lgp = calldata;
Weston Andros Adamsona47970f2013-02-25 21:27:33 -05007527 struct inode *inode = lgp->args.inode;
7528 struct nfs_server *server = NFS_SERVER(inode);
Idan Kedar85541162012-08-02 11:47:10 +03007529 size_t max_pages = max_response_pages(server);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007530
7531 dprintk("--> %s\n", __func__);
Idan Kedar85541162012-08-02 11:47:10 +03007532 nfs4_free_pages(lgp->args.layout.pages, max_pages);
Weston Andros Adamsona47970f2013-02-25 21:27:33 -05007533 pnfs_put_layout_hdr(NFS_I(inode)->layout);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007534 put_nfs_open_context(lgp->args.ctx);
7535 kfree(calldata);
7536 dprintk("<-- %s\n", __func__);
7537}
7538
7539static const struct rpc_call_ops nfs4_layoutget_call_ops = {
7540 .rpc_call_prepare = nfs4_layoutget_prepare,
7541 .rpc_call_done = nfs4_layoutget_done,
7542 .rpc_release = nfs4_layoutget_release,
7543};
7544
Trond Myklebusta0b0a6e2012-09-17 17:12:15 -04007545struct pnfs_layout_segment *
7546nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags)
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007547{
Weston Andros Adamsona47970f2013-02-25 21:27:33 -05007548 struct inode *inode = lgp->args.inode;
7549 struct nfs_server *server = NFS_SERVER(inode);
Idan Kedar85541162012-08-02 11:47:10 +03007550 size_t max_pages = max_response_pages(server);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007551 struct rpc_task *task;
7552 struct rpc_message msg = {
7553 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTGET],
7554 .rpc_argp = &lgp->args,
7555 .rpc_resp = &lgp->res,
Trond Myklebust6ab59342013-05-20 10:49:34 -04007556 .rpc_cred = lgp->cred,
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007557 };
7558 struct rpc_task_setup task_setup_data = {
7559 .rpc_client = server->client,
7560 .rpc_message = &msg,
7561 .callback_ops = &nfs4_layoutget_call_ops,
7562 .callback_data = lgp,
7563 .flags = RPC_TASK_ASYNC,
7564 };
Trond Myklebusta0b0a6e2012-09-17 17:12:15 -04007565 struct pnfs_layout_segment *lseg = NULL;
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007566 int status = 0;
7567
7568 dprintk("--> %s\n", __func__);
7569
Idan Kedar85541162012-08-02 11:47:10 +03007570 lgp->args.layout.pages = nfs4_alloc_pages(max_pages, gfp_flags);
7571 if (!lgp->args.layout.pages) {
7572 nfs4_layoutget_release(lgp);
Trond Myklebusta0b0a6e2012-09-17 17:12:15 -04007573 return ERR_PTR(-ENOMEM);
Idan Kedar85541162012-08-02 11:47:10 +03007574 }
7575 lgp->args.layout.pglen = max_pages * PAGE_SIZE;
Weston Andros Adamson30005122013-02-28 20:30:10 -05007576 lgp->args.timestamp = jiffies;
Idan Kedar85541162012-08-02 11:47:10 +03007577
Weston Andros Adamson35124a02011-03-24 16:48:21 -04007578 lgp->res.layoutp = &lgp->args.layout;
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007579 lgp->res.seq_res.sr_slot = NULL;
Chuck Levera9c92d62013-08-09 12:48:18 -04007580 nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0);
Weston Andros Adamsona47970f2013-02-25 21:27:33 -05007581
7582 /* nfs4_layoutget_release calls pnfs_put_layout_hdr */
7583 pnfs_get_layout_hdr(NFS_I(inode)->layout);
7584
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007585 task = rpc_run_task(&task_setup_data);
7586 if (IS_ERR(task))
Trond Myklebusta0b0a6e2012-09-17 17:12:15 -04007587 return ERR_CAST(task);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007588 status = nfs4_wait_for_completion_rpc_task(task);
Fred Isamanc31663d2011-01-06 11:36:24 +00007589 if (status == 0)
7590 status = task->tk_status;
Trond Myklebust1037e6e2013-08-14 16:36:51 -04007591 trace_nfs4_layoutget(lgp->args.ctx,
7592 &lgp->args.range,
7593 &lgp->res.range,
7594 status);
Weston Andros Adamson085b7a42013-02-15 16:03:46 -05007595 /* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
7596 if (status == 0 && lgp->res.layoutp->len)
Trond Myklebusta0b0a6e2012-09-17 17:12:15 -04007597 lseg = pnfs_layout_process(lgp);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007598 rpc_put_task(task);
7599 dprintk("<-- %s status=%d\n", __func__, status);
Trond Myklebusta0b0a6e2012-09-17 17:12:15 -04007600 if (status)
7601 return ERR_PTR(status);
7602 return lseg;
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007603}
7604
Benny Halevycbe82602011-05-22 19:52:37 +03007605static void
7606nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata)
7607{
7608 struct nfs4_layoutreturn *lrp = calldata;
7609
7610 dprintk("--> %s\n", __func__);
Trond Myklebustd9afbd12012-10-22 20:28:44 -04007611 nfs41_setup_sequence(lrp->clp->cl_session,
7612 &lrp->args.seq_args,
7613 &lrp->res.seq_res,
7614 task);
Benny Halevycbe82602011-05-22 19:52:37 +03007615}
7616
7617static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata)
7618{
7619 struct nfs4_layoutreturn *lrp = calldata;
7620 struct nfs_server *server;
7621
7622 dprintk("--> %s\n", __func__);
7623
Trond Myklebust6ba7db32012-10-22 20:07:20 -04007624 if (!nfs41_sequence_done(task, &lrp->res.seq_res))
Benny Halevycbe82602011-05-22 19:52:37 +03007625 return;
7626
7627 server = NFS_SERVER(lrp->args.inode);
Trond Myklebustf22e5ed2013-12-04 12:09:45 -05007628 switch (task->tk_status) {
7629 default:
7630 task->tk_status = 0;
7631 case 0:
7632 break;
7633 case -NFS4ERR_DELAY:
7634 if (nfs4_async_handle_error(task, server, NULL) != -EAGAIN)
7635 break;
Trond Myklebustd00c5d42011-10-19 12:17:29 -07007636 rpc_restart_call_prepare(task);
Benny Halevycbe82602011-05-22 19:52:37 +03007637 return;
7638 }
Benny Halevycbe82602011-05-22 19:52:37 +03007639 dprintk("<-- %s\n", __func__);
7640}
7641
7642static void nfs4_layoutreturn_release(void *calldata)
7643{
7644 struct nfs4_layoutreturn *lrp = calldata;
Trond Myklebust849b2862012-09-24 14:18:39 -04007645 struct pnfs_layout_hdr *lo = lrp->args.layout;
Benny Halevycbe82602011-05-22 19:52:37 +03007646
7647 dprintk("--> %s\n", __func__);
Trond Myklebust849b2862012-09-24 14:18:39 -04007648 spin_lock(&lo->plh_inode->i_lock);
7649 if (lrp->res.lrs_present)
7650 pnfs_set_layout_stateid(lo, &lrp->res.stateid, true);
7651 lo->plh_block_lgets--;
7652 spin_unlock(&lo->plh_inode->i_lock);
Trond Myklebust70c3bd22012-09-18 20:51:13 -04007653 pnfs_put_layout_hdr(lrp->args.layout);
Benny Halevycbe82602011-05-22 19:52:37 +03007654 kfree(calldata);
7655 dprintk("<-- %s\n", __func__);
7656}
7657
7658static const struct rpc_call_ops nfs4_layoutreturn_call_ops = {
7659 .rpc_call_prepare = nfs4_layoutreturn_prepare,
7660 .rpc_call_done = nfs4_layoutreturn_done,
7661 .rpc_release = nfs4_layoutreturn_release,
7662};
7663
7664int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp)
7665{
7666 struct rpc_task *task;
7667 struct rpc_message msg = {
7668 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTRETURN],
7669 .rpc_argp = &lrp->args,
7670 .rpc_resp = &lrp->res,
Trond Myklebust95560002013-05-20 10:43:47 -04007671 .rpc_cred = lrp->cred,
Benny Halevycbe82602011-05-22 19:52:37 +03007672 };
7673 struct rpc_task_setup task_setup_data = {
Andy Adamson1771c572013-07-22 12:42:05 -04007674 .rpc_client = NFS_SERVER(lrp->args.inode)->client,
Benny Halevycbe82602011-05-22 19:52:37 +03007675 .rpc_message = &msg,
7676 .callback_ops = &nfs4_layoutreturn_call_ops,
7677 .callback_data = lrp,
7678 };
7679 int status;
7680
7681 dprintk("--> %s\n", __func__);
Chuck Levera9c92d62013-08-09 12:48:18 -04007682 nfs4_init_sequence(&lrp->args.seq_args, &lrp->res.seq_res, 1);
Benny Halevycbe82602011-05-22 19:52:37 +03007683 task = rpc_run_task(&task_setup_data);
7684 if (IS_ERR(task))
7685 return PTR_ERR(task);
7686 status = task->tk_status;
Trond Myklebust1037e6e2013-08-14 16:36:51 -04007687 trace_nfs4_layoutreturn(lrp->args.inode, status);
Benny Halevycbe82602011-05-22 19:52:37 +03007688 dprintk("<-- %s status=%d\n", __func__, status);
7689 rpc_put_task(task);
7690 return status;
7691}
7692
Andy Adamson7f11d8d2011-07-30 20:52:35 -04007693/*
7694 * Retrieve the list of Data Server devices from the MDS.
7695 */
7696static int _nfs4_getdevicelist(struct nfs_server *server,
7697 const struct nfs_fh *fh,
7698 struct pnfs_devicelist *devlist)
7699{
7700 struct nfs4_getdevicelist_args args = {
7701 .fh = fh,
7702 .layoutclass = server->pnfs_curr_ld->id,
7703 };
7704 struct nfs4_getdevicelist_res res = {
7705 .devlist = devlist,
7706 };
7707 struct rpc_message msg = {
7708 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST],
7709 .rpc_argp = &args,
7710 .rpc_resp = &res,
7711 };
7712 int status;
7713
7714 dprintk("--> %s\n", __func__);
7715 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args,
7716 &res.seq_res, 0);
7717 dprintk("<-- %s status=%d\n", __func__, status);
7718 return status;
7719}
7720
7721int nfs4_proc_getdevicelist(struct nfs_server *server,
7722 const struct nfs_fh *fh,
7723 struct pnfs_devicelist *devlist)
7724{
7725 struct nfs4_exception exception = { };
7726 int err;
7727
7728 do {
7729 err = nfs4_handle_exception(server,
7730 _nfs4_getdevicelist(server, fh, devlist),
7731 &exception);
7732 } while (exception.retry);
7733
7734 dprintk("%s: err=%d, num_devs=%u\n", __func__,
7735 err, devlist->num_devs);
7736
7737 return err;
7738}
7739EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist);
7740
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007741static int
Trond Myklebustcd5875f2013-05-20 11:42:54 -04007742_nfs4_proc_getdeviceinfo(struct nfs_server *server,
7743 struct pnfs_device *pdev,
7744 struct rpc_cred *cred)
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007745{
7746 struct nfs4_getdeviceinfo_args args = {
7747 .pdev = pdev,
7748 };
7749 struct nfs4_getdeviceinfo_res res = {
7750 .pdev = pdev,
7751 };
7752 struct rpc_message msg = {
7753 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICEINFO],
7754 .rpc_argp = &args,
7755 .rpc_resp = &res,
Trond Myklebustcd5875f2013-05-20 11:42:54 -04007756 .rpc_cred = cred,
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007757 };
7758 int status;
7759
7760 dprintk("--> %s\n", __func__);
Bryan Schumaker7c513052011-03-24 17:12:24 +00007761 status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007762 dprintk("<-- %s status=%d\n", __func__, status);
7763
7764 return status;
7765}
7766
Trond Myklebustcd5875f2013-05-20 11:42:54 -04007767int nfs4_proc_getdeviceinfo(struct nfs_server *server,
7768 struct pnfs_device *pdev,
7769 struct rpc_cred *cred)
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007770{
7771 struct nfs4_exception exception = { };
7772 int err;
7773
7774 do {
7775 err = nfs4_handle_exception(server,
Trond Myklebustcd5875f2013-05-20 11:42:54 -04007776 _nfs4_proc_getdeviceinfo(server, pdev, cred),
Andy Adamsonb1f69b72010-10-20 00:18:03 -04007777 &exception);
7778 } while (exception.retry);
7779 return err;
7780}
7781EXPORT_SYMBOL_GPL(nfs4_proc_getdeviceinfo);
7782
Andy Adamson863a3c62011-03-23 13:27:54 +00007783static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata)
7784{
7785 struct nfs4_layoutcommit_data *data = calldata;
7786 struct nfs_server *server = NFS_SERVER(data->args.inode);
Trond Myklebust6ba7db32012-10-22 20:07:20 -04007787 struct nfs4_session *session = nfs4_get_session(server);
Andy Adamson863a3c62011-03-23 13:27:54 +00007788
Trond Myklebustd9afbd12012-10-22 20:28:44 -04007789 nfs41_setup_sequence(session,
7790 &data->args.seq_args,
7791 &data->res.seq_res,
7792 task);
Andy Adamson863a3c62011-03-23 13:27:54 +00007793}
7794
7795static void
7796nfs4_layoutcommit_done(struct rpc_task *task, void *calldata)
7797{
7798 struct nfs4_layoutcommit_data *data = calldata;
7799 struct nfs_server *server = NFS_SERVER(data->args.inode);
7800
Trond Myklebust6ba7db32012-10-22 20:07:20 -04007801 if (!nfs41_sequence_done(task, &data->res.seq_res))
Andy Adamson863a3c62011-03-23 13:27:54 +00007802 return;
7803
7804 switch (task->tk_status) { /* Just ignore these failures */
Trond Myklebuste59d27e2012-03-27 18:22:19 -04007805 case -NFS4ERR_DELEG_REVOKED: /* layout was recalled */
7806 case -NFS4ERR_BADIOMODE: /* no IOMODE_RW layout for range */
7807 case -NFS4ERR_BADLAYOUT: /* no layout */
7808 case -NFS4ERR_GRACE: /* loca_recalim always false */
Andy Adamson863a3c62011-03-23 13:27:54 +00007809 task->tk_status = 0;
Trond Myklebuste59d27e2012-03-27 18:22:19 -04007810 case 0:
Trond Myklebuste59d27e2012-03-27 18:22:19 -04007811 break;
7812 default:
7813 if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) {
7814 rpc_restart_call_prepare(task);
7815 return;
7816 }
7817 }
Andy Adamson863a3c62011-03-23 13:27:54 +00007818}
7819
7820static void nfs4_layoutcommit_release(void *calldata)
7821{
7822 struct nfs4_layoutcommit_data *data = calldata;
7823
Andy Adamsondb29c082011-07-30 20:52:38 -04007824 pnfs_cleanup_layoutcommit(data);
Trond Myklebustd8c951c2014-01-13 12:08:11 -05007825 nfs_post_op_update_inode_force_wcc(data->args.inode,
7826 data->res.fattr);
Andy Adamson863a3c62011-03-23 13:27:54 +00007827 put_rpccred(data->cred);
7828 kfree(data);
7829}
7830
7831static const struct rpc_call_ops nfs4_layoutcommit_ops = {
7832 .rpc_call_prepare = nfs4_layoutcommit_prepare,
7833 .rpc_call_done = nfs4_layoutcommit_done,
7834 .rpc_release = nfs4_layoutcommit_release,
7835};
7836
7837int
Andy Adamsonef311532011-03-12 02:58:10 -05007838nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync)
Andy Adamson863a3c62011-03-23 13:27:54 +00007839{
7840 struct rpc_message msg = {
7841 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTCOMMIT],
7842 .rpc_argp = &data->args,
7843 .rpc_resp = &data->res,
7844 .rpc_cred = data->cred,
7845 };
7846 struct rpc_task_setup task_setup_data = {
7847 .task = &data->task,
7848 .rpc_client = NFS_CLIENT(data->args.inode),
7849 .rpc_message = &msg,
7850 .callback_ops = &nfs4_layoutcommit_ops,
7851 .callback_data = data,
7852 .flags = RPC_TASK_ASYNC,
7853 };
7854 struct rpc_task *task;
7855 int status = 0;
7856
7857 dprintk("NFS: %4d initiating layoutcommit call. sync %d "
7858 "lbw: %llu inode %lu\n",
7859 data->task.tk_pid, sync,
7860 data->args.lastbytewritten,
7861 data->args.inode->i_ino);
7862
Chuck Levera9c92d62013-08-09 12:48:18 -04007863 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1);
Andy Adamson863a3c62011-03-23 13:27:54 +00007864 task = rpc_run_task(&task_setup_data);
7865 if (IS_ERR(task))
7866 return PTR_ERR(task);
Andy Adamsonef311532011-03-12 02:58:10 -05007867 if (sync == false)
Andy Adamson863a3c62011-03-23 13:27:54 +00007868 goto out;
7869 status = nfs4_wait_for_completion_rpc_task(task);
7870 if (status != 0)
7871 goto out;
7872 status = task->tk_status;
Trond Myklebust1037e6e2013-08-14 16:36:51 -04007873 trace_nfs4_layoutcommit(data->args.inode, status);
Andy Adamson863a3c62011-03-23 13:27:54 +00007874out:
7875 dprintk("%s: status %d\n", __func__, status);
7876 rpc_put_task(task);
7877 return status;
7878}
Bryan Schumakerfca78d62011-06-02 14:59:07 -04007879
Andy Adamson97431202013-08-08 10:57:56 -04007880/**
7881 * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
7882 * possible) as per RFC3530bis and RFC5661 Security Considerations sections
7883 */
Bryan Schumakerfca78d62011-06-02 14:59:07 -04007884static int
7885_nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
Weston Andros Adamsonb1b3e132013-09-04 12:13:19 -04007886 struct nfs_fsinfo *info,
7887 struct nfs4_secinfo_flavors *flavors, bool use_integrity)
Bryan Schumakerfca78d62011-06-02 14:59:07 -04007888{
7889 struct nfs41_secinfo_no_name_args args = {
7890 .style = SECINFO_STYLE_CURRENT_FH,
7891 };
7892 struct nfs4_secinfo_res res = {
7893 .flavors = flavors,
7894 };
7895 struct rpc_message msg = {
7896 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SECINFO_NO_NAME],
7897 .rpc_argp = &args,
7898 .rpc_resp = &res,
7899 };
Weston Andros Adamsonb1b3e132013-09-04 12:13:19 -04007900 struct rpc_clnt *clnt = server->client;
Weston Andros Adamson7cb852d2013-09-10 18:44:31 -04007901 struct rpc_cred *cred = NULL;
Weston Andros Adamsonb1b3e132013-09-04 12:13:19 -04007902 int status;
7903
7904 if (use_integrity) {
7905 clnt = server->nfs_client->cl_rpcclient;
Weston Andros Adamson7cb852d2013-09-10 18:44:31 -04007906 cred = nfs4_get_clid_cred(server->nfs_client);
7907 msg.rpc_cred = cred;
Weston Andros Adamsonb1b3e132013-09-04 12:13:19 -04007908 }
7909
7910 dprintk("--> %s\n", __func__);
7911 status = nfs4_call_sync(clnt, server, &msg, &args.seq_args,
7912 &res.seq_res, 0);
7913 dprintk("<-- %s status=%d\n", __func__, status);
7914
Weston Andros Adamson7cb852d2013-09-10 18:44:31 -04007915 if (cred)
7916 put_rpccred(cred);
Weston Andros Adamsonb1b3e132013-09-04 12:13:19 -04007917
7918 return status;
Bryan Schumakerfca78d62011-06-02 14:59:07 -04007919}
7920
7921static int
7922nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
7923 struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors)
7924{
7925 struct nfs4_exception exception = { };
7926 int err;
7927 do {
Weston Andros Adamsonb1b3e132013-09-04 12:13:19 -04007928 /* first try using integrity protection */
7929 err = -NFS4ERR_WRONGSEC;
7930
7931 /* try to use integrity protection with machine cred */
7932 if (_nfs4_is_integrity_protected(server->nfs_client))
7933 err = _nfs41_proc_secinfo_no_name(server, fhandle, info,
7934 flavors, true);
7935
7936 /*
7937 * if unable to use integrity protection, or SECINFO with
7938 * integrity protection returns NFS4ERR_WRONGSEC (which is
7939 * disallowed by spec, but exists in deployed servers) use
7940 * the current filesystem's rpc_client and the user cred.
7941 */
7942 if (err == -NFS4ERR_WRONGSEC)
7943 err = _nfs41_proc_secinfo_no_name(server, fhandle, info,
7944 flavors, false);
7945
Bryan Schumakerfca78d62011-06-02 14:59:07 -04007946 switch (err) {
7947 case 0:
7948 case -NFS4ERR_WRONGSEC:
Weston Andros Adamson78b19ba2014-01-13 16:54:45 -05007949 case -ENOTSUPP:
Trond Myklebust05e9cfb2012-03-27 18:13:02 -04007950 goto out;
Bryan Schumakerfca78d62011-06-02 14:59:07 -04007951 default:
7952 err = nfs4_handle_exception(server, err, &exception);
7953 }
7954 } while (exception.retry);
Trond Myklebust05e9cfb2012-03-27 18:13:02 -04007955out:
Bryan Schumakerfca78d62011-06-02 14:59:07 -04007956 return err;
7957}
7958
7959static int
7960nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle,
7961 struct nfs_fsinfo *info)
7962{
7963 int err;
7964 struct page *page;
Anna Schumaker367156d2013-09-25 17:02:48 -04007965 rpc_authflavor_t flavor = RPC_AUTH_MAXFLAVOR;
Bryan Schumakerfca78d62011-06-02 14:59:07 -04007966 struct nfs4_secinfo_flavors *flavors;
Weston Andros Adamson58a8cf12013-09-24 13:58:02 -04007967 struct nfs4_secinfo4 *secinfo;
7968 int i;
Bryan Schumakerfca78d62011-06-02 14:59:07 -04007969
7970 page = alloc_page(GFP_KERNEL);
7971 if (!page) {
7972 err = -ENOMEM;
7973 goto out;
7974 }
7975
7976 flavors = page_address(page);
7977 err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors);
7978
7979 /*
7980 * Fall back on "guess and check" method if
7981 * the server doesn't support SECINFO_NO_NAME
7982 */
Weston Andros Adamson78b19ba2014-01-13 16:54:45 -05007983 if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) {
Bryan Schumakerfca78d62011-06-02 14:59:07 -04007984 err = nfs4_find_root_sec(server, fhandle, info);
7985 goto out_freepage;
7986 }
7987 if (err)
7988 goto out_freepage;
7989
Weston Andros Adamson58a8cf12013-09-24 13:58:02 -04007990 for (i = 0; i < flavors->num_flavors; i++) {
7991 secinfo = &flavors->flavors[i];
7992
7993 switch (secinfo->flavor) {
7994 case RPC_AUTH_NULL:
7995 case RPC_AUTH_UNIX:
7996 case RPC_AUTH_GSS:
7997 flavor = rpcauth_get_pseudoflavor(secinfo->flavor,
7998 &secinfo->flavor_info);
7999 break;
8000 default:
8001 flavor = RPC_AUTH_MAXFLAVOR;
8002 break;
8003 }
8004
Weston Andros Adamson4d4b69d2013-10-18 15:15:19 -04008005 if (!nfs_auth_info_match(&server->auth_info, flavor))
8006 flavor = RPC_AUTH_MAXFLAVOR;
8007
Weston Andros Adamson58a8cf12013-09-24 13:58:02 -04008008 if (flavor != RPC_AUTH_MAXFLAVOR) {
8009 err = nfs4_lookup_root_sec(server, fhandle,
8010 info, flavor);
8011 if (!err)
8012 break;
8013 }
8014 }
8015
8016 if (flavor == RPC_AUTH_MAXFLAVOR)
8017 err = -EPERM;
Bryan Schumakerfca78d62011-06-02 14:59:07 -04008018
8019out_freepage:
8020 put_page(page);
8021 if (err == -EACCES)
8022 return -EPERM;
8023out:
8024 return err;
8025}
Bryan Schumaker1cab0652012-01-31 10:39:29 -05008026
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04008027static int _nfs41_test_stateid(struct nfs_server *server,
8028 nfs4_stateid *stateid,
8029 struct rpc_cred *cred)
Bryan Schumaker7d974792011-06-02 14:59:08 -04008030{
8031 int status;
8032 struct nfs41_test_stateid_args args = {
Bryan Schumaker1cab0652012-01-31 10:39:29 -05008033 .stateid = stateid,
Bryan Schumaker7d974792011-06-02 14:59:08 -04008034 };
8035 struct nfs41_test_stateid_res res;
8036 struct rpc_message msg = {
8037 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_TEST_STATEID],
8038 .rpc_argp = &args,
8039 .rpc_resp = &res,
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04008040 .rpc_cred = cred,
Bryan Schumaker7d974792011-06-02 14:59:08 -04008041 };
Weston Andros Adamson3787d502013-08-13 16:37:36 -04008042 struct rpc_clnt *rpc_client = server->client;
8043
8044 nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID,
8045 &rpc_client, &msg);
Bryan Schumaker1cab0652012-01-31 10:39:29 -05008046
Chuck Lever38527b12012-07-11 16:30:23 -04008047 dprintk("NFS call test_stateid %p\n", stateid);
Chuck Levera9c92d62013-08-09 12:48:18 -04008048 nfs4_init_sequence(&args.seq_args, &res.seq_res, 0);
Trond Myklebust8fe72ba2012-10-29 19:02:20 -04008049 nfs4_set_sequence_privileged(&args.seq_args);
Weston Andros Adamson3787d502013-08-13 16:37:36 -04008050 status = nfs4_call_sync_sequence(rpc_client, server, &msg,
Trond Myklebust8fe72ba2012-10-29 19:02:20 -04008051 &args.seq_args, &res.seq_res);
Chuck Lever38527b12012-07-11 16:30:23 -04008052 if (status != NFS_OK) {
8053 dprintk("NFS reply test_stateid: failed, %d\n", status);
Chuck Lever377e5072012-07-11 16:29:45 -04008054 return status;
Chuck Lever38527b12012-07-11 16:30:23 -04008055 }
8056 dprintk("NFS reply test_stateid: succeeded, %d\n", -res.status);
Chuck Lever377e5072012-07-11 16:29:45 -04008057 return -res.status;
Bryan Schumaker7d974792011-06-02 14:59:08 -04008058}
8059
Chuck Lever38527b12012-07-11 16:30:23 -04008060/**
8061 * nfs41_test_stateid - perform a TEST_STATEID operation
8062 *
8063 * @server: server / transport on which to perform the operation
8064 * @stateid: state ID to test
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04008065 * @cred: credential
Chuck Lever38527b12012-07-11 16:30:23 -04008066 *
8067 * Returns NFS_OK if the server recognizes that "stateid" is valid.
8068 * Otherwise a negative NFS4ERR value is returned if the operation
8069 * failed or the state ID is not currently valid.
8070 */
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04008071static int nfs41_test_stateid(struct nfs_server *server,
8072 nfs4_stateid *stateid,
8073 struct rpc_cred *cred)
Bryan Schumaker7d974792011-06-02 14:59:08 -04008074{
8075 struct nfs4_exception exception = { };
8076 int err;
8077 do {
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04008078 err = _nfs41_test_stateid(server, stateid, cred);
Chuck Lever377e5072012-07-11 16:29:45 -04008079 if (err != -NFS4ERR_DELAY)
8080 break;
8081 nfs4_handle_exception(server, err, &exception);
Bryan Schumaker7d974792011-06-02 14:59:08 -04008082 } while (exception.retry);
8083 return err;
8084}
Bryan Schumaker9aeda352011-06-02 14:59:09 -04008085
Trond Myklebust7c1d5fa2013-05-03 14:40:01 -04008086struct nfs_free_stateid_data {
8087 struct nfs_server *server;
8088 struct nfs41_free_stateid_args args;
Bryan Schumaker9aeda352011-06-02 14:59:09 -04008089 struct nfs41_free_stateid_res res;
Trond Myklebust7c1d5fa2013-05-03 14:40:01 -04008090};
8091
8092static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata)
8093{
8094 struct nfs_free_stateid_data *data = calldata;
8095 nfs41_setup_sequence(nfs4_get_session(data->server),
8096 &data->args.seq_args,
8097 &data->res.seq_res,
8098 task);
8099}
8100
8101static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata)
8102{
8103 struct nfs_free_stateid_data *data = calldata;
8104
8105 nfs41_sequence_done(task, &data->res.seq_res);
8106
8107 switch (task->tk_status) {
8108 case -NFS4ERR_DELAY:
8109 if (nfs4_async_handle_error(task, data->server, NULL) == -EAGAIN)
8110 rpc_restart_call_prepare(task);
8111 }
8112}
8113
8114static void nfs41_free_stateid_release(void *calldata)
8115{
8116 kfree(calldata);
8117}
8118
Trond Myklebust17f26b12013-08-21 15:48:42 -04008119static const struct rpc_call_ops nfs41_free_stateid_ops = {
Trond Myklebust7c1d5fa2013-05-03 14:40:01 -04008120 .rpc_call_prepare = nfs41_free_stateid_prepare,
8121 .rpc_call_done = nfs41_free_stateid_done,
8122 .rpc_release = nfs41_free_stateid_release,
8123};
8124
8125static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server,
8126 nfs4_stateid *stateid,
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04008127 struct rpc_cred *cred,
Trond Myklebust7c1d5fa2013-05-03 14:40:01 -04008128 bool privileged)
8129{
Bryan Schumaker9aeda352011-06-02 14:59:09 -04008130 struct rpc_message msg = {
8131 .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FREE_STATEID],
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04008132 .rpc_cred = cred,
Bryan Schumaker9aeda352011-06-02 14:59:09 -04008133 };
Trond Myklebust7c1d5fa2013-05-03 14:40:01 -04008134 struct rpc_task_setup task_setup = {
8135 .rpc_client = server->client,
8136 .rpc_message = &msg,
8137 .callback_ops = &nfs41_free_stateid_ops,
8138 .flags = RPC_TASK_ASYNC,
8139 };
8140 struct nfs_free_stateid_data *data;
Bryan Schumaker9aeda352011-06-02 14:59:09 -04008141
Weston Andros Adamson3787d502013-08-13 16:37:36 -04008142 nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_STATEID,
8143 &task_setup.rpc_client, &msg);
8144
Chuck Lever38527b12012-07-11 16:30:23 -04008145 dprintk("NFS call free_stateid %p\n", stateid);
Trond Myklebust7c1d5fa2013-05-03 14:40:01 -04008146 data = kmalloc(sizeof(*data), GFP_NOFS);
8147 if (!data)
8148 return ERR_PTR(-ENOMEM);
8149 data->server = server;
8150 nfs4_stateid_copy(&data->args.stateid, stateid);
8151
8152 task_setup.callback_data = data;
8153
8154 msg.rpc_argp = &data->args;
8155 msg.rpc_resp = &data->res;
Chuck Levera9c92d62013-08-09 12:48:18 -04008156 nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
Trond Myklebust7c1d5fa2013-05-03 14:40:01 -04008157 if (privileged)
8158 nfs4_set_sequence_privileged(&data->args.seq_args);
8159
8160 return rpc_run_task(&task_setup);
Bryan Schumaker9aeda352011-06-02 14:59:09 -04008161}
8162
Chuck Lever38527b12012-07-11 16:30:23 -04008163/**
8164 * nfs41_free_stateid - perform a FREE_STATEID operation
8165 *
8166 * @server: server / transport on which to perform the operation
8167 * @stateid: state ID to release
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04008168 * @cred: credential
Chuck Lever38527b12012-07-11 16:30:23 -04008169 *
8170 * Returns NFS_OK if the server freed "stateid". Otherwise a
8171 * negative NFS4ERR value is returned.
8172 */
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04008173static int nfs41_free_stateid(struct nfs_server *server,
8174 nfs4_stateid *stateid,
8175 struct rpc_cred *cred)
Bryan Schumaker9aeda352011-06-02 14:59:09 -04008176{
Trond Myklebust7c1d5fa2013-05-03 14:40:01 -04008177 struct rpc_task *task;
8178 int ret;
8179
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04008180 task = _nfs41_free_stateid(server, stateid, cred, true);
Trond Myklebust7c1d5fa2013-05-03 14:40:01 -04008181 if (IS_ERR(task))
8182 return PTR_ERR(task);
8183 ret = rpc_wait_for_completion_task(task);
8184 if (!ret)
8185 ret = task->tk_status;
8186 rpc_put_task(task);
8187 return ret;
Bryan Schumaker9aeda352011-06-02 14:59:09 -04008188}
Trond Myklebust36281ca2012-03-04 18:13:56 -05008189
Trond Myklebustc8b2d0b2013-05-03 16:22:55 -04008190static int nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp)
8191{
8192 struct rpc_task *task;
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04008193 struct rpc_cred *cred = lsp->ls_state->owner->so_cred;
Trond Myklebustc8b2d0b2013-05-03 16:22:55 -04008194
Trond Myklebustab7cb0d2013-05-20 11:20:27 -04008195 task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false);
Trond Myklebustc8b2d0b2013-05-03 16:22:55 -04008196 nfs4_free_lock_state(server, lsp);
8197 if (IS_ERR(task))
8198 return PTR_ERR(task);
8199 rpc_put_task(task);
8200 return 0;
8201}
8202
Trond Myklebust36281ca2012-03-04 18:13:56 -05008203static bool nfs41_match_stateid(const nfs4_stateid *s1,
8204 const nfs4_stateid *s2)
8205{
Trond Myklebust2d2f24a2012-03-04 18:13:57 -05008206 if (memcmp(s1->other, s2->other, sizeof(s1->other)) != 0)
Trond Myklebust36281ca2012-03-04 18:13:56 -05008207 return false;
8208
Trond Myklebust2d2f24a2012-03-04 18:13:57 -05008209 if (s1->seqid == s2->seqid)
Trond Myklebust36281ca2012-03-04 18:13:56 -05008210 return true;
Trond Myklebust2d2f24a2012-03-04 18:13:57 -05008211 if (s1->seqid == 0 || s2->seqid == 0)
Trond Myklebust36281ca2012-03-04 18:13:56 -05008212 return true;
8213
8214 return false;
8215}
8216
Andy Adamson557134a2009-04-01 09:21:53 -04008217#endif /* CONFIG_NFS_V4_1 */
8218
Trond Myklebust36281ca2012-03-04 18:13:56 -05008219static bool nfs4_match_stateid(const nfs4_stateid *s1,
8220 const nfs4_stateid *s2)
8221{
Trond Myklebustf597c532012-03-04 18:13:56 -05008222 return nfs4_stateid_match(s1, s2);
Trond Myklebust36281ca2012-03-04 18:13:56 -05008223}
8224
8225
Trond Myklebust17280172012-03-11 13:11:00 -04008226static const struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = {
Trond Myklebust7eff03a2008-12-23 15:21:43 -05008227 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
Trond Myklebustb79a4a12008-12-23 15:21:41 -05008228 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
Linus Torvalds1da177e2005-04-16 15:20:36 -07008229 .recover_open = nfs4_open_reclaim,
8230 .recover_lock = nfs4_lock_reclaim,
Andy Adamson591d71c2009-04-01 09:22:47 -04008231 .establish_clid = nfs4_init_clientid,
Chuck Lever05f4c352012-09-14 17:24:32 -04008232 .detect_trunking = nfs40_discover_server_trunking,
Linus Torvalds1da177e2005-04-16 15:20:36 -07008233};
8234
Andy Adamson591d71c2009-04-01 09:22:47 -04008235#if defined(CONFIG_NFS_V4_1)
Trond Myklebust17280172012-03-11 13:11:00 -04008236static const struct nfs4_state_recovery_ops nfs41_reboot_recovery_ops = {
Andy Adamson591d71c2009-04-01 09:22:47 -04008237 .owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
8238 .state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
8239 .recover_open = nfs4_open_reclaim,
8240 .recover_lock = nfs4_lock_reclaim,
Andy Adamson4d643d12009-12-04 15:52:24 -05008241 .establish_clid = nfs41_init_clientid,
Ricardo Labiagafce5c832009-12-05 16:08:41 -05008242 .reclaim_complete = nfs41_proc_reclaim_complete,
Chuck Lever05f4c352012-09-14 17:24:32 -04008243 .detect_trunking = nfs41_discover_server_trunking,
Andy Adamson591d71c2009-04-01 09:22:47 -04008244};
8245#endif /* CONFIG_NFS_V4_1 */
8246
Trond Myklebust17280172012-03-11 13:11:00 -04008247static const struct nfs4_state_recovery_ops nfs40_nograce_recovery_ops = {
Trond Myklebust7eff03a2008-12-23 15:21:43 -05008248 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
Trond Myklebustb79a4a12008-12-23 15:21:41 -05008249 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
Linus Torvalds1da177e2005-04-16 15:20:36 -07008250 .recover_open = nfs4_open_expired,
8251 .recover_lock = nfs4_lock_expired,
Andy Adamson591d71c2009-04-01 09:22:47 -04008252 .establish_clid = nfs4_init_clientid,
Linus Torvalds1da177e2005-04-16 15:20:36 -07008253};
8254
Andy Adamson591d71c2009-04-01 09:22:47 -04008255#if defined(CONFIG_NFS_V4_1)
Trond Myklebust17280172012-03-11 13:11:00 -04008256static const struct nfs4_state_recovery_ops nfs41_nograce_recovery_ops = {
Andy Adamson591d71c2009-04-01 09:22:47 -04008257 .owner_flag_bit = NFS_OWNER_RECLAIM_NOGRACE,
8258 .state_flag_bit = NFS_STATE_RECLAIM_NOGRACE,
Bryan Schumakerf062eb62011-06-02 14:59:10 -04008259 .recover_open = nfs41_open_expired,
8260 .recover_lock = nfs41_lock_expired,
Andy Adamson4d643d12009-12-04 15:52:24 -05008261 .establish_clid = nfs41_init_clientid,
Andy Adamson591d71c2009-04-01 09:22:47 -04008262};
8263#endif /* CONFIG_NFS_V4_1 */
8264
Trond Myklebust17280172012-03-11 13:11:00 -04008265static const struct nfs4_state_maintenance_ops nfs40_state_renewal_ops = {
Benny Halevy29fba382009-04-01 09:22:44 -04008266 .sched_state_renewal = nfs4_proc_async_renew,
Andy Adamsona7b72102009-04-01 09:22:46 -04008267 .get_state_renewal_cred_locked = nfs4_get_renew_cred_locked,
Benny Halevy8e69514f2009-04-01 09:22:45 -04008268 .renew_lease = nfs4_proc_renew,
Benny Halevy29fba382009-04-01 09:22:44 -04008269};
8270
8271#if defined(CONFIG_NFS_V4_1)
Trond Myklebust17280172012-03-11 13:11:00 -04008272static const struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = {
Benny Halevy29fba382009-04-01 09:22:44 -04008273 .sched_state_renewal = nfs41_proc_async_sequence,
Andy Adamsona7b72102009-04-01 09:22:46 -04008274 .get_state_renewal_cred_locked = nfs4_get_machine_cred_locked,
Benny Halevy8e69514f2009-04-01 09:22:45 -04008275 .renew_lease = nfs4_proc_sequence,
Benny Halevy29fba382009-04-01 09:22:44 -04008276};
8277#endif
8278
Chuck Leverec011fe2013-10-17 14:12:39 -04008279static const struct nfs4_mig_recovery_ops nfs40_mig_recovery_ops = {
Chuck Leverb03d7352013-10-17 14:12:50 -04008280 .get_locations = _nfs40_proc_get_locations,
Chuck Lever44c99932013-10-17 14:13:30 -04008281 .fsid_present = _nfs40_proc_fsid_present,
Chuck Leverec011fe2013-10-17 14:12:39 -04008282};
8283
8284#if defined(CONFIG_NFS_V4_1)
8285static const struct nfs4_mig_recovery_ops nfs41_mig_recovery_ops = {
Chuck Leverb03d7352013-10-17 14:12:50 -04008286 .get_locations = _nfs41_proc_get_locations,
Chuck Lever44c99932013-10-17 14:13:30 -04008287 .fsid_present = _nfs41_proc_fsid_present,
Chuck Leverec011fe2013-10-17 14:12:39 -04008288};
8289#endif /* CONFIG_NFS_V4_1 */
8290
Trond Myklebust97dc1352010-06-16 09:52:26 -04008291static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = {
8292 .minor_version = 0,
Trond Myklebust39c6daa2013-03-15 16:11:57 -04008293 .init_caps = NFS_CAP_READDIRPLUS
8294 | NFS_CAP_ATOMIC_OPEN
8295 | NFS_CAP_CHANGE_ATTR
8296 | NFS_CAP_POSIX_LOCK,
Chuck Leverabf79bb2013-08-09 12:49:11 -04008297 .init_client = nfs40_init_client,
8298 .shutdown_client = nfs40_shutdown_client,
Trond Myklebust36281ca2012-03-04 18:13:56 -05008299 .match_stateid = nfs4_match_stateid,
Bryan Schumakerfca78d62011-06-02 14:59:07 -04008300 .find_root_sec = nfs4_find_root_sec,
Trond Myklebustc8b2d0b2013-05-03 16:22:55 -04008301 .free_lock_state = nfs4_release_lockowner,
Chuck Lever9915ea72013-08-09 12:48:27 -04008302 .call_sync_ops = &nfs40_call_sync_ops,
Trond Myklebustc48f4f32010-06-16 09:52:27 -04008303 .reboot_recovery_ops = &nfs40_reboot_recovery_ops,
8304 .nograce_recovery_ops = &nfs40_nograce_recovery_ops,
8305 .state_renewal_ops = &nfs40_state_renewal_ops,
Chuck Leverec011fe2013-10-17 14:12:39 -04008306 .mig_recovery_ops = &nfs40_mig_recovery_ops,
Trond Myklebust97dc1352010-06-16 09:52:26 -04008307};
8308
8309#if defined(CONFIG_NFS_V4_1)
8310static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = {
8311 .minor_version = 1,
Trond Myklebust39c6daa2013-03-15 16:11:57 -04008312 .init_caps = NFS_CAP_READDIRPLUS
8313 | NFS_CAP_ATOMIC_OPEN
8314 | NFS_CAP_CHANGE_ATTR
Trond Myklebust3b664862013-03-17 15:31:15 -04008315 | NFS_CAP_POSIX_LOCK
Trond Myklebust49f9a0f2013-03-15 16:44:28 -04008316 | NFS_CAP_STATEID_NFSV41
8317 | NFS_CAP_ATOMIC_OPEN_V1,
Chuck Leverabf79bb2013-08-09 12:49:11 -04008318 .init_client = nfs41_init_client,
8319 .shutdown_client = nfs41_shutdown_client,
Trond Myklebust36281ca2012-03-04 18:13:56 -05008320 .match_stateid = nfs41_match_stateid,
Bryan Schumakerfca78d62011-06-02 14:59:07 -04008321 .find_root_sec = nfs41_find_root_sec,
Trond Myklebustc8b2d0b2013-05-03 16:22:55 -04008322 .free_lock_state = nfs41_free_lock_state,
Chuck Lever9915ea72013-08-09 12:48:27 -04008323 .call_sync_ops = &nfs41_call_sync_ops,
Trond Myklebustc48f4f32010-06-16 09:52:27 -04008324 .reboot_recovery_ops = &nfs41_reboot_recovery_ops,
8325 .nograce_recovery_ops = &nfs41_nograce_recovery_ops,
8326 .state_renewal_ops = &nfs41_state_renewal_ops,
Chuck Leverec011fe2013-10-17 14:12:39 -04008327 .mig_recovery_ops = &nfs41_mig_recovery_ops,
Trond Myklebust97dc1352010-06-16 09:52:26 -04008328};
8329#endif
8330
Steve Dickson42c2c422013-05-22 12:50:38 -04008331#if defined(CONFIG_NFS_V4_2)
8332static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = {
8333 .minor_version = 2,
Bryan Schumaker70173102013-06-19 13:41:43 -04008334 .init_caps = NFS_CAP_READDIRPLUS
8335 | NFS_CAP_ATOMIC_OPEN
8336 | NFS_CAP_CHANGE_ATTR
8337 | NFS_CAP_POSIX_LOCK
8338 | NFS_CAP_STATEID_NFSV41
8339 | NFS_CAP_ATOMIC_OPEN_V1,
Chuck Leverabf79bb2013-08-09 12:49:11 -04008340 .init_client = nfs41_init_client,
8341 .shutdown_client = nfs41_shutdown_client,
Steve Dickson42c2c422013-05-22 12:50:38 -04008342 .match_stateid = nfs41_match_stateid,
8343 .find_root_sec = nfs41_find_root_sec,
Bryan Schumaker70173102013-06-19 13:41:43 -04008344 .free_lock_state = nfs41_free_lock_state,
Chuck Lever9915ea72013-08-09 12:48:27 -04008345 .call_sync_ops = &nfs41_call_sync_ops,
Steve Dickson42c2c422013-05-22 12:50:38 -04008346 .reboot_recovery_ops = &nfs41_reboot_recovery_ops,
8347 .nograce_recovery_ops = &nfs41_nograce_recovery_ops,
8348 .state_renewal_ops = &nfs41_state_renewal_ops,
8349};
8350#endif
8351
Trond Myklebust97dc1352010-06-16 09:52:26 -04008352const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = {
8353 [0] = &nfs_v4_0_minor_ops,
8354#if defined(CONFIG_NFS_V4_1)
8355 [1] = &nfs_v4_1_minor_ops,
8356#endif
Steve Dickson42c2c422013-05-22 12:50:38 -04008357#if defined(CONFIG_NFS_V4_2)
8358 [2] = &nfs_v4_2_minor_ops,
8359#endif
Trond Myklebust97dc1352010-06-16 09:52:26 -04008360};
8361
Trond Myklebust17f26b12013-08-21 15:48:42 -04008362static const struct inode_operations nfs4_dir_inode_operations = {
Bryan Schumaker73a79702012-07-16 16:39:12 -04008363 .create = nfs_create,
8364 .lookup = nfs_lookup,
8365 .atomic_open = nfs_atomic_open,
8366 .link = nfs_link,
8367 .unlink = nfs_unlink,
8368 .symlink = nfs_symlink,
8369 .mkdir = nfs_mkdir,
8370 .rmdir = nfs_rmdir,
8371 .mknod = nfs_mknod,
8372 .rename = nfs_rename,
8373 .permission = nfs_permission,
8374 .getattr = nfs_getattr,
8375 .setattr = nfs_setattr,
8376 .getxattr = generic_getxattr,
8377 .setxattr = generic_setxattr,
8378 .listxattr = generic_listxattr,
8379 .removexattr = generic_removexattr,
8380};
8381
Arjan van de Ven92e1d5b2007-02-12 00:55:39 -08008382static const struct inode_operations nfs4_file_inode_operations = {
J. Bruce Fields6b3b5492005-06-22 17:16:22 +00008383 .permission = nfs_permission,
8384 .getattr = nfs_getattr,
8385 .setattr = nfs_setattr,
Aneesh Kumar K.V64c2ce82010-12-09 11:35:25 +00008386 .getxattr = generic_getxattr,
8387 .setxattr = generic_setxattr,
8388 .listxattr = generic_listxattr,
8389 .removexattr = generic_removexattr,
J. Bruce Fields6b3b5492005-06-22 17:16:22 +00008390};
8391
David Howells509de812006-08-22 20:06:11 -04008392const struct nfs_rpc_ops nfs_v4_clientops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07008393 .version = 4, /* protocol version */
8394 .dentry_ops = &nfs4_dentry_operations,
8395 .dir_inode_ops = &nfs4_dir_inode_operations,
J. Bruce Fields6b3b5492005-06-22 17:16:22 +00008396 .file_inode_ops = &nfs4_file_inode_operations,
Jeff Layton1788ea62011-11-04 13:31:21 -04008397 .file_ops = &nfs4_file_operations,
Linus Torvalds1da177e2005-04-16 15:20:36 -07008398 .getroot = nfs4_proc_get_root,
Bryan Schumaker281cad42012-04-27 13:27:45 -04008399 .submount = nfs4_submount,
Bryan Schumakerff9099f22012-07-30 16:05:18 -04008400 .try_mount = nfs4_try_mount,
Linus Torvalds1da177e2005-04-16 15:20:36 -07008401 .getattr = nfs4_proc_getattr,
8402 .setattr = nfs4_proc_setattr,
8403 .lookup = nfs4_proc_lookup,
8404 .access = nfs4_proc_access,
8405 .readlink = nfs4_proc_readlink,
Linus Torvalds1da177e2005-04-16 15:20:36 -07008406 .create = nfs4_proc_create,
8407 .remove = nfs4_proc_remove,
8408 .unlink_setup = nfs4_proc_unlink_setup,
Bryan Schumaker34e137c2012-03-19 14:54:41 -04008409 .unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare,
Linus Torvalds1da177e2005-04-16 15:20:36 -07008410 .unlink_done = nfs4_proc_unlink_done,
8411 .rename = nfs4_proc_rename,
Jeff Laytond3d41522010-09-17 17:31:57 -04008412 .rename_setup = nfs4_proc_rename_setup,
Bryan Schumakerc6bfa1a2012-03-19 14:54:42 -04008413 .rename_rpc_prepare = nfs4_proc_rename_rpc_prepare,
Jeff Laytond3d41522010-09-17 17:31:57 -04008414 .rename_done = nfs4_proc_rename_done,
Linus Torvalds1da177e2005-04-16 15:20:36 -07008415 .link = nfs4_proc_link,
8416 .symlink = nfs4_proc_symlink,
8417 .mkdir = nfs4_proc_mkdir,
8418 .rmdir = nfs4_proc_remove,
8419 .readdir = nfs4_proc_readdir,
8420 .mknod = nfs4_proc_mknod,
8421 .statfs = nfs4_proc_statfs,
8422 .fsinfo = nfs4_proc_fsinfo,
8423 .pathconf = nfs4_proc_pathconf,
David Howellse9326dc2006-08-22 20:06:10 -04008424 .set_capabilities = nfs4_server_capabilities,
Linus Torvalds1da177e2005-04-16 15:20:36 -07008425 .decode_dirent = nfs4_decode_dirent,
8426 .read_setup = nfs4_proc_read_setup,
Bryan Schumaker1abb50882012-06-20 15:53:47 -04008427 .read_pageio_init = pnfs_pageio_init_read,
Bryan Schumakerea7c3302012-03-19 14:54:40 -04008428 .read_rpc_prepare = nfs4_proc_read_rpc_prepare,
Trond Myklebustec06c092006-03-20 13:44:27 -05008429 .read_done = nfs4_read_done,
Linus Torvalds1da177e2005-04-16 15:20:36 -07008430 .write_setup = nfs4_proc_write_setup,
Bryan Schumaker57208fa2012-06-20 15:53:48 -04008431 .write_pageio_init = pnfs_pageio_init_write,
Bryan Schumakerc6cb80d2012-03-19 14:54:39 -04008432 .write_rpc_prepare = nfs4_proc_write_rpc_prepare,
Trond Myklebust788e7a82006-03-20 13:44:27 -05008433 .write_done = nfs4_write_done,
Linus Torvalds1da177e2005-04-16 15:20:36 -07008434 .commit_setup = nfs4_proc_commit_setup,
Fred Isaman0b7c0152012-04-20 14:47:39 -04008435 .commit_rpc_prepare = nfs4_proc_commit_rpc_prepare,
Trond Myklebust788e7a82006-03-20 13:44:27 -05008436 .commit_done = nfs4_commit_done,
Linus Torvalds1da177e2005-04-16 15:20:36 -07008437 .lock = nfs4_proc_lock,
J. Bruce Fieldse50a1c22005-06-22 17:16:23 +00008438 .clear_acl_cache = nfs4_zap_acl_attr,
Trond Myklebust7fe5c392009-03-19 15:35:50 -04008439 .close_context = nfs4_close_context,
Trond Myklebust2b484292010-09-17 10:56:51 -04008440 .open_context = nfs4_atomic_open,
Bryan Schumaker011e2a72012-06-20 15:53:43 -04008441 .have_delegation = nfs4_have_delegation,
Bryan Schumaker57ec14c2012-06-20 15:53:44 -04008442 .return_delegation = nfs4_inode_return_delegation,
Bryan Schumaker6663ee72012-06-20 15:53:46 -04008443 .alloc_client = nfs4_alloc_client,
Andy Adamson45a52a02011-03-01 01:34:08 +00008444 .init_client = nfs4_init_client,
Bryan Schumakercdb7ece2012-06-20 15:53:45 -04008445 .free_client = nfs4_free_client,
Bryan Schumaker1179acc2012-07-30 16:05:19 -04008446 .create_server = nfs4_create_server,
8447 .clone_server = nfs_clone_server,
Linus Torvalds1da177e2005-04-16 15:20:36 -07008448};
8449
Aneesh Kumar K.V64c2ce82010-12-09 11:35:25 +00008450static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = {
8451 .prefix = XATTR_NAME_NFSV4_ACL,
8452 .list = nfs4_xattr_list_nfs4_acl,
8453 .get = nfs4_xattr_get_nfs4_acl,
8454 .set = nfs4_xattr_set_nfs4_acl,
8455};
8456
8457const struct xattr_handler *nfs4_xattr_handlers[] = {
8458 &nfs4_xattr_nfs4_acl_handler,
David Quigleyc9bccef2013-05-22 12:50:45 -04008459#ifdef CONFIG_NFS_V4_SECURITY_LABEL
8460 &nfs4_xattr_nfs4_label_handler,
8461#endif
Aneesh Kumar K.V64c2ce82010-12-09 11:35:25 +00008462 NULL
8463};
8464
Linus Torvalds1da177e2005-04-16 15:20:36 -07008465/*
8466 * Local variables:
8467 * c-basic-offset: 8
8468 * End:
8469 */