blob: 0beb023f25ace63a8b4ec270eb69bdbaa3e19cbe [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * Server-side procedures for NFSv4.
3 *
4 * Copyright (c) 2002 The Regents of the University of Michigan.
5 * All rights reserved.
6 *
7 * Kendrick Smith <kmsmith@umich.edu>
8 * Andy Adamson <andros@umich.edu>
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 *
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its
20 * contributors may be used to endorse or promote products derived
21 * from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
26 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
30 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Linus Torvalds1da177e2005-04-16 15:20:36 -070034 */
NeilBrown7e06b7f2005-06-23 22:03:13 -070035#include <linux/file.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090036#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070037
Mi Jinlong58e7b332011-08-28 18:18:56 +080038#include "idmap.h"
Boaz Harrosh9a74af22009-12-03 20:30:56 +020039#include "cache.h"
40#include "xdr4.h"
J. Bruce Fields0a3adad2009-11-04 18:12:35 -050041#include "vfs.h"
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +010042#include "current_stateid.h"
Stanislav Kinsbursky3320fef192012-11-14 18:22:07 +030043#include "netns.h"
Christoph Hellwig4ac72492013-12-20 05:16:55 -080044#include "acl.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070045
David Quigley18032ca2013-05-02 13:19:10 -040046#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
47#include <linux/security.h>
48
49static inline void
50nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval)
51{
52 struct inode *inode = resfh->fh_dentry->d_inode;
53 int status;
54
55 mutex_lock(&inode->i_mutex);
56 status = security_inode_setsecctx(resfh->fh_dentry,
57 label->data, label->len);
58 mutex_unlock(&inode->i_mutex);
59
60 if (status)
61 /*
62 * XXX: We should really fail the whole open, but we may
63 * already have created a new file, so it may be too
64 * late. For now this seems the least of evils:
65 */
66 bmval[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
67
68 return;
69}
70#else
71static inline void
72nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval)
73{ }
74#endif
75
Linus Torvalds1da177e2005-04-16 15:20:36 -070076#define NFSDDBG_FACILITY NFSDDBG_PROC
77
Yu Zhiguo3c8e0312009-05-16 16:22:31 +080078static u32 nfsd_attrmask[] = {
79 NFSD_WRITEABLE_ATTRS_WORD0,
80 NFSD_WRITEABLE_ATTRS_WORD1,
81 NFSD_WRITEABLE_ATTRS_WORD2
82};
83
84static u32 nfsd41_ex_attrmask[] = {
85 NFSD_SUPPATTR_EXCLCREAT_WORD0,
86 NFSD_SUPPATTR_EXCLCREAT_WORD1,
87 NFSD_SUPPATTR_EXCLCREAT_WORD2
88};
89
90static __be32
91check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
92 u32 *bmval, u32 *writable)
93{
94 struct dentry *dentry = cstate->current_fh.fh_dentry;
Yu Zhiguo3c8e0312009-05-16 16:22:31 +080095
96 /*
97 * Check about attributes are supported by the NFSv4 server or not.
98 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP.
99 */
100 if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) ||
101 (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) ||
102 (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
103 return nfserr_attrnotsupp;
104
105 /*
Trond Myklebusta06b1262009-08-31 15:16:11 -0400106 * Check FATTR4_WORD0_ACL can be supported
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800107 * in current environment or not.
108 */
109 if (bmval[0] & FATTR4_WORD0_ACL) {
110 if (!IS_POSIXACL(dentry->d_inode))
111 return nfserr_attrnotsupp;
112 }
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800113
114 /*
115 * According to spec, read-only attributes return ERR_INVAL.
116 */
117 if (writable) {
118 if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
119 (bmval[2] & ~writable[2]))
120 return nfserr_inval;
121 }
122
123 return nfs_ok;
124}
125
126static __be32
127nfsd4_check_open_attributes(struct svc_rqst *rqstp,
128 struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
129{
130 __be32 status = nfs_ok;
131
132 if (open->op_create == NFS4_OPEN_CREATE) {
133 if (open->op_createmode == NFS4_CREATE_UNCHECKED
134 || open->op_createmode == NFS4_CREATE_GUARDED)
135 status = check_attr_support(rqstp, cstate,
136 open->op_bmval, nfsd_attrmask);
137 else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1)
138 status = check_attr_support(rqstp, cstate,
139 open->op_bmval, nfsd41_ex_attrmask);
140 }
141
142 return status;
143}
144
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800145static int
146is_create_with_attrs(struct nfsd4_open *open)
147{
148 return open->op_create == NFS4_OPEN_CREATE
149 && (open->op_createmode == NFS4_CREATE_UNCHECKED
150 || open->op_createmode == NFS4_CREATE_GUARDED
151 || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1);
152}
153
154/*
155 * if error occurs when setting the acl, just clear the acl bit
156 * in the returned attr bitmap.
157 */
158static void
159do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
160 struct nfs4_acl *acl, u32 *bmval)
161{
162 __be32 status;
163
164 status = nfsd4_set_nfs4_acl(rqstp, fhp, acl);
165 if (status)
166 /*
167 * We should probably fail the whole open at this point,
168 * but we've already created the file, so it's too late;
169 * So this seems the least of evils:
170 */
171 bmval[0] &= ~FATTR4_WORD0_ACL;
172}
173
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174static inline void
175fh_dup2(struct svc_fh *dst, struct svc_fh *src)
176{
177 fh_put(dst);
178 dget(src->fh_dentry);
179 if (src->fh_export)
Kinglong Meebf18f162014-06-10 22:06:44 +0800180 exp_get(src->fh_export);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181 *dst = *src;
182}
183
Al Virob37ad282006-10-19 23:28:59 -0700184static __be32
J. Bruce Fieldsdc730e12006-10-17 00:10:13 -0700185do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186{
Al Virob37ad282006-10-19 23:28:59 -0700187 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188
189 if (open->op_truncate &&
190 !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
191 return nfserr_inval;
192
J. Bruce Fieldsa0432262011-08-25 10:48:39 -0400193 accmode |= NFSD_MAY_READ_IF_EXEC;
194
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200196 accmode |= NFSD_MAY_READ;
J. Bruce Fields9801d8a2006-10-17 00:10:14 -0700197 if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200198 accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC);
J. Bruce Fields57ecb342009-12-01 19:42:57 -0500199 if (open->op_share_deny & NFS4_SHARE_DENY_READ)
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200200 accmode |= NFSD_MAY_WRITE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201
202 status = fh_verify(rqstp, current_fh, S_IFREG, accmode);
203
204 return status;
205}
206
J. Bruce Fieldsaadab6c2011-08-15 16:55:02 -0400207static __be32 nfsd_check_obj_isreg(struct svc_fh *fh)
208{
209 umode_t mode = fh->fh_dentry->d_inode->i_mode;
210
211 if (S_ISREG(mode))
212 return nfs_ok;
213 if (S_ISDIR(mode))
214 return nfserr_isdir;
215 /*
216 * Using err_symlink as our catch-all case may look odd; but
217 * there's no other obvious error for this case in 4.0, and we
218 * happen to know that it will cause the linux v4 client to do
219 * the right thing on attempts to open something other than a
220 * regular file.
221 */
222 return nfserr_symlink;
223}
224
J. Bruce Fieldsbbc9c362013-03-22 18:03:49 -0400225static void nfsd4_set_open_owner_reply_cache(struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh *resfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226{
J. Bruce Fieldsbbc9c362013-03-22 18:03:49 -0400227 if (nfsd4_has_session(cstate))
228 return;
229 fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
230 &resfh->fh_handle);
231}
232
233static __be32
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500234do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh **resfh)
J. Bruce Fieldsbbc9c362013-03-22 18:03:49 -0400235{
236 struct svc_fh *current_fh = &cstate->current_fh;
Neil Brown7007c902012-12-07 15:40:55 -0500237 int accmode;
Al Virob37ad282006-10-19 23:28:59 -0700238 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500240 *resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL);
241 if (!*resfh)
J. Bruce Fields59deeb92012-01-27 16:49:55 -0500242 return nfserr_jukebox;
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500243 fh_init(*resfh, NFS4_FHSIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244 open->op_truncate = 0;
245
246 if (open->op_create) {
Benny Halevy79fb54a2009-04-03 08:29:17 +0300247 /* FIXME: check session persistence and pnfs flags.
248 * The nfsv4.1 spec requires the following semantics:
249 *
250 * Persistent | pNFS | Server REQUIRED | Client Allowed
251 * Reply Cache | server | |
252 * -------------+--------+-----------------+--------------------
253 * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
254 * | | | (SHOULD)
255 * | | and EXCLUSIVE4 | or EXCLUSIVE4
256 * | | | (SHOULD NOT)
257 * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
258 * yes | no | GUARDED4 | GUARDED4
259 * yes | yes | GUARDED4 | GUARDED4
260 */
261
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262 /*
263 * Note: create modes (UNCHECKED,GUARDED...) are the same
Mi Jinlongac6721a2011-04-20 17:06:25 +0800264 * in NFSv4 as in v3 except EXCLUSIVE4_1.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265 */
Mi Jinlongac6721a2011-04-20 17:06:25 +0800266 status = do_nfsd_create(rqstp, current_fh, open->op_fname.data,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267 open->op_fname.len, &open->op_iattr,
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500268 *resfh, open->op_createmode,
Jeff Layton749997e2007-07-31 00:37:51 -0700269 (u32 *)open->op_verf.data,
J. Bruce Fields856121b2011-10-13 11:37:11 -0400270 &open->op_truncate, &open->op_created);
Jeff Layton749997e2007-07-31 00:37:51 -0700271
David Quigley18032ca2013-05-02 13:19:10 -0400272 if (!status && open->op_label.len)
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500273 nfsd4_security_inode_setsecctx(*resfh, &open->op_label, open->op_bmval);
David Quigley18032ca2013-05-02 13:19:10 -0400274
J. Bruce Fields99f88722009-02-02 15:12:27 -0500275 /*
276 * Following rfc 3530 14.2.16, use the returned bitmask
277 * to indicate which attributes we used to store the
278 * verifier:
Jeff Layton749997e2007-07-31 00:37:51 -0700279 */
280 if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0)
J. Bruce Fields99f88722009-02-02 15:12:27 -0500281 open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS |
J. Bruce Fields9dc4e6c2012-04-09 18:06:49 -0400282 FATTR4_WORD1_TIME_MODIFY);
J. Bruce Fields43357232014-01-24 18:04:40 -0500283 } else
284 /*
285 * Note this may exit with the parent still locked.
286 * We will hold the lock until nfsd4_open's final
287 * lookup, to prevent renames or unlinks until we've had
288 * a chance to an acquire a delegation if appropriate.
289 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290 status = nfsd_lookup(rqstp, current_fh,
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500291 open->op_fname.data, open->op_fname.len, *resfh);
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800292 if (status)
293 goto out;
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500294 status = nfsd_check_obj_isreg(*resfh);
J. Bruce Fields9dc4e6c2012-04-09 18:06:49 -0400295 if (status)
296 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800298 if (is_create_with_attrs(open) && open->op_acl != NULL)
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500299 do_set_nfs4_acl(rqstp, *resfh, open->op_acl, open->op_bmval);
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800300
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500301 nfsd4_set_open_owner_reply_cache(cstate, open, *resfh);
Neil Brown7007c902012-12-07 15:40:55 -0500302 accmode = NFSD_MAY_NOP;
J. Bruce Fields89f6c332013-06-19 15:47:37 -0400303 if (open->op_created ||
304 open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR)
Neil Brown7007c902012-12-07 15:40:55 -0500305 accmode |= NFSD_MAY_OWNER_OVERRIDE;
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500306 status = do_open_permission(rqstp, *resfh, open, accmode);
J. Bruce Fields41fd1e42012-01-27 16:26:02 -0500307 set_change_info(&open->op_cinfo, current_fh);
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800308out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 return status;
310}
311
Al Virob37ad282006-10-19 23:28:59 -0700312static __be32
J. Bruce Fieldsbbc9c362013-03-22 18:03:49 -0400313do_open_fhandle(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314{
J. Bruce Fieldsbbc9c362013-03-22 18:03:49 -0400315 struct svc_fh *current_fh = &cstate->current_fh;
Al Virob37ad282006-10-19 23:28:59 -0700316 __be32 status;
J. Bruce Fields9f415eb2013-05-03 16:09:09 -0400317 int accmode = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 /* We don't know the target directory, and therefore can not
320 * set the change info
321 */
322
323 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
324
J. Bruce Fieldsbbc9c362013-03-22 18:03:49 -0400325 nfsd4_set_open_owner_reply_cache(cstate, open, current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326
327 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
328 (open->op_iattr.ia_size == 0);
J. Bruce Fields9f415eb2013-05-03 16:09:09 -0400329 /*
330 * In the delegation case, the client is telling us about an
331 * open that it *already* performed locally, some time ago. We
332 * should let it succeed now if possible.
333 *
334 * In the case of a CLAIM_FH open, on the other hand, the client
335 * may be counting on us to enforce permissions (the Linux 4.1
336 * client uses this for normal opens, for example).
337 */
338 if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEG_CUR_FH)
339 accmode = NFSD_MAY_OWNER_OVERRIDE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340
J. Bruce Fields9f415eb2013-05-03 16:09:09 -0400341 status = do_open_permission(rqstp, current_fh, open, accmode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342
343 return status;
344}
345
Andy Adamson60adfc52009-04-03 08:28:50 +0300346static void
347copy_clientid(clientid_t *clid, struct nfsd4_session *session)
348{
349 struct nfsd4_sessionid *sid =
350 (struct nfsd4_sessionid *)session->se_sessionid.data;
351
352 clid->cl_boot = sid->clientid.cl_boot;
353 clid->cl_id = sid->clientid.cl_id;
354}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355
J.Bruce Fields71911552006-12-13 00:35:29 -0800356static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800357nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -0800358 struct nfsd4_open *open)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359{
Al Virob37ad282006-10-19 23:28:59 -0700360 __be32 status;
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500361 struct svc_fh *resfh = NULL;
Andy Adamson66689582009-04-03 08:28:45 +0300362 struct nfsd4_compoundres *resp;
Stanislav Kinsbursky3320fef192012-11-14 18:22:07 +0300363 struct net *net = SVC_NET(rqstp);
364 struct nfsd_net *nn = net_generic(net, nfsd_net_id);
Andy Adamson66689582009-04-03 08:28:45 +0300365
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400366 dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 (int)open->op_fname.len, open->op_fname.data,
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400368 open->op_openowner);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 /* This check required by spec. */
371 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
372 return nfserr_inval;
373
J. Bruce Fields856121b2011-10-13 11:37:11 -0400374 open->op_created = 0;
Mi Jinlongab1350b2011-07-14 15:06:26 +0800375 /*
376 * RFC5661 18.51.3
377 * Before RECLAIM_COMPLETE done, server should deny new lock
378 */
379 if (nfsd4_has_session(cstate) &&
Jeff Laytona52d7262012-03-21 09:52:02 -0400380 !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE,
381 &cstate->session->se_client->cl_flags) &&
Mi Jinlongab1350b2011-07-14 15:06:26 +0800382 open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
383 return nfserr_grace;
384
Andy Adamson60adfc52009-04-03 08:28:50 +0300385 if (nfsd4_has_session(cstate))
386 copy_clientid(&open->op_clientid, cstate->session);
387
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388 /* check seqid for replay. set nfs4_owner */
Andy Adamson66689582009-04-03 08:28:45 +0300389 resp = rqstp->rq_resp;
Stanislav Kinsbursky3320fef192012-11-14 18:22:07 +0300390 status = nfsd4_process_open1(&resp->cstate, open, nn);
Al Viroa90b0612006-10-19 23:29:03 -0700391 if (status == nfserr_replay_me) {
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400392 struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800393 fh_put(&cstate->current_fh);
J. Bruce Fieldsa4773c082009-02-02 17:23:10 -0500394 fh_copy_shallow(&cstate->current_fh.fh_handle,
395 &rp->rp_openfh);
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200396 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397 if (status)
398 dprintk("nfsd4_open: replay failed"
399 " restoring previous filehandle\n");
400 else
Al Viroa90b0612006-10-19 23:29:03 -0700401 status = nfserr_replay_me;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402 }
403 if (status)
404 goto out;
J. Bruce Fields9d313b12013-02-28 12:51:49 -0800405 if (open->op_xdr_error) {
406 status = open->op_xdr_error;
407 goto out;
408 }
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800409
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800410 status = nfsd4_check_open_attributes(rqstp, cstate, open);
411 if (status)
412 goto out;
413
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800414 /* Openowner is now set, so sequence id will get bumped. Now we need
415 * these checks before we do any creates: */
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800416 status = nfserr_grace;
Stanislav Kinsbursky3320fef192012-11-14 18:22:07 +0300417 if (locks_in_grace(net) && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800418 goto out;
419 status = nfserr_no_grace;
Stanislav Kinsbursky3320fef192012-11-14 18:22:07 +0300420 if (!locks_in_grace(net) && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800421 goto out;
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800422
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 switch (open->op_claim_type) {
NeilBrown0dd3c192005-06-23 22:02:56 -0700424 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425 case NFS4_OPEN_CLAIM_NULL:
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500426 status = do_open_lookup(rqstp, cstate, open, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427 if (status)
428 goto out;
429 break;
430 case NFS4_OPEN_CLAIM_PREVIOUS:
Stanislav Kinsbursky3320fef192012-11-14 18:22:07 +0300431 status = nfs4_check_open_reclaim(&open->op_clientid,
Trond Myklebust0fe492d2014-06-30 11:48:47 -0400432 cstate, nn);
Mi Jinlong0cf99b92011-11-23 10:48:40 +0800433 if (status)
434 goto out;
Jeff Laytonba5378b2014-05-30 09:09:28 -0400435 open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
J. Bruce Fields8b289b22011-10-19 11:52:12 -0400436 case NFS4_OPEN_CLAIM_FH:
437 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
J. Bruce Fieldsbbc9c362013-03-22 18:03:49 -0400438 status = do_open_fhandle(rqstp, cstate, open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439 if (status)
440 goto out;
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500441 resfh = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442 break;
J. Bruce Fields8b289b22011-10-19 11:52:12 -0400443 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400445 dprintk("NFSD: unsupported OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446 open->op_claim_type);
447 status = nfserr_notsupp;
448 goto out;
449 default:
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400450 dprintk("NFSD: Invalid OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451 open->op_claim_type);
452 status = nfserr_inval;
453 goto out;
454 }
455 /*
456 * nfsd4_process_open2() does the actual opening of the file. If
457 * successful, it (1) truncates the file if open->op_truncate was
458 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
459 */
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500460 status = nfsd4_process_open2(rqstp, resfh, open);
Jeff Laytonb3fbfe02014-07-29 21:37:44 -0400461 WARN(status && open->op_created,
462 "nfsd4_process_open2 failed to open newly-created file! status=%u\n",
463 be32_to_cpu(status));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464out:
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500465 if (resfh && resfh != &cstate->current_fh) {
466 fh_dup2(&cstate->current_fh, resfh);
467 fh_put(resfh);
468 kfree(resfh);
469 }
Jeff Layton58fb12e2014-07-29 21:34:27 -0400470 nfsd4_cleanup_open_state(cstate, open, status);
J. Bruce Fields9411b1d2013-04-01 16:37:12 -0400471 nfsd4_bump_seqid(cstate, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472 return status;
473}
474
475/*
J. Bruce Fields9d313b12013-02-28 12:51:49 -0800476 * OPEN is the only seqid-mutating operation whose decoding can fail
477 * with a seqid-mutating error (specifically, decoding of user names in
478 * the attributes). Therefore we have to do some processing to look up
479 * the stateowner so that we can bump the seqid.
480 */
481static __be32 nfsd4_open_omfg(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_op *op)
482{
483 struct nfsd4_open *open = (struct nfsd4_open *)&op->u;
484
485 if (!seqid_mutating_err(ntohl(op->status)))
486 return op->status;
487 if (nfsd4_has_session(cstate))
488 return op->status;
489 open->op_xdr_error = op->status;
490 return nfsd4_open(rqstp, cstate, open);
491}
492
493/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494 * filehandle-manipulating ops.
495 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800496static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800497nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
498 struct svc_fh **getfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800500 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 return nfserr_nofilehandle;
502
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800503 *getfh = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504 return nfs_ok;
505}
506
J.Bruce Fields71911552006-12-13 00:35:29 -0800507static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800508nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
509 struct nfsd4_putfh *putfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800511 fh_put(&cstate->current_fh);
512 cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
513 memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
514 putfh->pf_fhlen);
J. Bruce Fields68d93182011-04-08 17:00:50 -0400515 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516}
517
J.Bruce Fields71911552006-12-13 00:35:29 -0800518static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800519nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
520 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521{
Al Virob37ad282006-10-19 23:28:59 -0700522 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800524 fh_put(&cstate->current_fh);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700525 status = exp_pseudoroot(rqstp, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526 return status;
527}
528
J.Bruce Fields71911552006-12-13 00:35:29 -0800529static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800530nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
531 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800533 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534 return nfserr_restorefh;
535
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800536 fh_dup2(&cstate->current_fh, &cstate->save_fh);
Tigran Mkrtchyan37c593c2012-02-13 22:55:32 +0100537 if (HAS_STATE_ID(cstate, SAVED_STATE_ID_FLAG)) {
538 memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t));
539 SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG);
540 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541 return nfs_ok;
542}
543
J.Bruce Fields71911552006-12-13 00:35:29 -0800544static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800545nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
546 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800548 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549 return nfserr_nofilehandle;
550
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800551 fh_dup2(&cstate->save_fh, &cstate->current_fh);
Tigran Mkrtchyan37c593c2012-02-13 22:55:32 +0100552 if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG)) {
553 memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t));
554 SET_STATE_ID(cstate, SAVED_STATE_ID_FLAG);
555 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556 return nfs_ok;
557}
558
559/*
560 * misc nfsv4 ops
561 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800562static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800563nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
564 struct nfsd4_access *access)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565{
566 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
567 return nfserr_inval;
568
569 access->ac_resp_access = access->ac_req_access;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800570 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
571 &access->ac_supported);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572}
573
Stanislav Kinsburskyb9c0ef82012-12-06 14:23:19 +0300574static void gen_boot_verifier(nfs4_verifier *verifier, struct net *net)
Chuck Leverab4684d2012-03-02 17:13:50 -0500575{
576 __be32 verf[2];
Stanislav Kinsburskyb9c0ef82012-12-06 14:23:19 +0300577 struct nfsd_net *nn = net_generic(net, nfsd_net_id);
Chuck Leverab4684d2012-03-02 17:13:50 -0500578
Jeff Laytonf4199922014-06-17 07:44:11 -0400579 /*
580 * This is opaque to client, so no need to byte-swap. Use
581 * __force to keep sparse happy
582 */
583 verf[0] = (__force __be32)nn->nfssvc_boot.tv_sec;
584 verf[1] = (__force __be32)nn->nfssvc_boot.tv_usec;
Chuck Leverab4684d2012-03-02 17:13:50 -0500585 memcpy(verifier->data, verf, sizeof(verifier->data));
586}
587
J.Bruce Fields71911552006-12-13 00:35:29 -0800588static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800589nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
590 struct nfsd4_commit *commit)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700591{
Stanislav Kinsburskyb9c0ef82012-12-06 14:23:19 +0300592 gen_boot_verifier(&commit->co_verf, SVC_NET(rqstp));
J. Bruce Fields75c096f2011-08-15 18:39:32 -0400593 return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800594 commit->co_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595}
596
Al Virob37ad282006-10-19 23:28:59 -0700597static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800598nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
599 struct nfsd4_create *create)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600{
601 struct svc_fh resfh;
Al Virob37ad282006-10-19 23:28:59 -0700602 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603 dev_t rdev;
604
605 fh_init(&resfh, NFS4_FHSIZE);
606
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200607 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
608 NFSD_MAY_CREATE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609 if (status)
610 return status;
611
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800612 status = check_attr_support(rqstp, cstate, create->cr_bmval,
613 nfsd_attrmask);
614 if (status)
615 return status;
616
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617 switch (create->cr_type) {
618 case NF4LNK:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800619 status = nfsd_symlink(rqstp, &cstate->current_fh,
620 create->cr_name, create->cr_namelen,
Kinglong Mee1e444f52014-07-01 17:48:02 +0800621 create->cr_data, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622 break;
623
624 case NF4BLK:
625 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
626 if (MAJOR(rdev) != create->cr_specdata1 ||
627 MINOR(rdev) != create->cr_specdata2)
628 return nfserr_inval;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800629 status = nfsd_create(rqstp, &cstate->current_fh,
630 create->cr_name, create->cr_namelen,
631 &create->cr_iattr, S_IFBLK, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632 break;
633
634 case NF4CHR:
635 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
636 if (MAJOR(rdev) != create->cr_specdata1 ||
637 MINOR(rdev) != create->cr_specdata2)
638 return nfserr_inval;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800639 status = nfsd_create(rqstp, &cstate->current_fh,
640 create->cr_name, create->cr_namelen,
641 &create->cr_iattr,S_IFCHR, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642 break;
643
644 case NF4SOCK:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800645 status = nfsd_create(rqstp, &cstate->current_fh,
646 create->cr_name, create->cr_namelen,
647 &create->cr_iattr, S_IFSOCK, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648 break;
649
650 case NF4FIFO:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800651 status = nfsd_create(rqstp, &cstate->current_fh,
652 create->cr_name, create->cr_namelen,
653 &create->cr_iattr, S_IFIFO, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700654 break;
655
656 case NF4DIR:
657 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800658 status = nfsd_create(rqstp, &cstate->current_fh,
659 create->cr_name, create->cr_namelen,
660 &create->cr_iattr, S_IFDIR, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661 break;
662
663 default:
664 status = nfserr_badtype;
665 }
666
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800667 if (status)
668 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669
David Quigley18032ca2013-05-02 13:19:10 -0400670 if (create->cr_label.len)
671 nfsd4_security_inode_setsecctx(&resfh, &create->cr_label, create->cr_bmval);
672
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800673 if (create->cr_acl != NULL)
674 do_set_nfs4_acl(rqstp, &resfh, create->cr_acl,
675 create->cr_bmval);
676
677 fh_unlock(&cstate->current_fh);
678 set_change_info(&create->cr_cinfo, &cstate->current_fh);
679 fh_dup2(&cstate->current_fh, &resfh);
680out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681 fh_put(&resfh);
682 return status;
683}
684
J.Bruce Fields71911552006-12-13 00:35:29 -0800685static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800686nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
687 struct nfsd4_getattr *getattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688{
Al Virob37ad282006-10-19 23:28:59 -0700689 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200691 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692 if (status)
693 return status;
694
695 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
696 return nfserr_inval;
697
Andy Adamson7e705702009-04-03 08:29:11 +0300698 getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
699 getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
700 getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700701
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800702 getattr->ga_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703 return nfs_ok;
704}
705
J.Bruce Fields71911552006-12-13 00:35:29 -0800706static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800707nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
708 struct nfsd4_link *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709{
Al Virob37ad282006-10-19 23:28:59 -0700710 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700711
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800712 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713 return status;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800714 status = nfsd_link(rqstp, &cstate->current_fh,
715 link->li_name, link->li_namelen, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700716 if (!status)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800717 set_change_info(&link->li_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718 return status;
719}
720
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500721static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700722{
723 struct svc_fh tmp_fh;
Al Virob37ad282006-10-19 23:28:59 -0700724 __be32 ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725
726 fh_init(&tmp_fh, NFS4_FHSIZE);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700727 ret = exp_pseudoroot(rqstp, &tmp_fh);
728 if (ret)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729 return ret;
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500730 if (tmp_fh.fh_dentry == fh->fh_dentry) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731 fh_put(&tmp_fh);
732 return nfserr_noent;
733 }
734 fh_put(&tmp_fh);
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500735 return nfsd_lookup(rqstp, fh, "..", 2, fh);
736}
737
738static __be32
739nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
740 void *arg)
741{
742 return nfsd4_do_lookupp(rqstp, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700743}
744
J.Bruce Fields71911552006-12-13 00:35:29 -0800745static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800746nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
747 struct nfsd4_lookup *lookup)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700748{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800749 return nfsd_lookup(rqstp, &cstate->current_fh,
750 lookup->lo_name, lookup->lo_len,
751 &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752}
753
J.Bruce Fields71911552006-12-13 00:35:29 -0800754static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800755nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
756 struct nfsd4_read *read)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700757{
Al Virob37ad282006-10-19 23:28:59 -0700758 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700759
760 /* no need to check permission - this will be done in nfsd_read() */
761
NeilBrown7e06b7f2005-06-23 22:03:13 -0700762 read->rd_filp = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700763 if (read->rd_offset >= OFFSET_MAX)
764 return nfserr_inval;
765
J. Bruce Fields9b3234b2012-12-04 18:03:46 -0500766 /*
767 * If we do a zero copy read, then a client will see read data
768 * that reflects the state of the file *after* performing the
769 * following compound.
770 *
771 * To ensure proper ordering, we therefore turn off zero copy if
772 * the client wants us to do more in this compound:
773 */
774 if (!nfsd4_last_compound_op(rqstp))
775 rqstp->rq_splice_ok = false;
776
Linus Torvalds1da177e2005-04-16 15:20:36 -0700777 /* check stateid */
Stanislav Kinsbursky5ccb0062012-07-25 16:57:22 +0400778 if ((status = nfs4_preprocess_stateid_op(SVC_NET(rqstp),
779 cstate, &read->rd_stateid,
Benny Halevydd453df2009-04-03 08:28:41 +0300780 RD_STATE, &read->rd_filp))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
782 goto out;
783 }
784 status = nfs_ok;
785out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786 read->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800787 read->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700788 return status;
789}
790
J.Bruce Fields71911552006-12-13 00:35:29 -0800791static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800792nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
793 struct nfsd4_readdir *readdir)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794{
795 u64 cookie = readdir->rd_cookie;
796 static const nfs4_verifier zeroverf;
797
798 /* no need to check permission - this will be done in nfsd_readdir() */
799
800 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
801 return nfserr_inval;
802
Andy Adamson7e705702009-04-03 08:29:11 +0300803 readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
804 readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
805 readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806
Bernd Schubert832023b2011-08-08 17:38:08 +0200807 if ((cookie == 1) || (cookie == 2) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -0700808 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
809 return nfserr_bad_cookie;
810
811 readdir->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800812 readdir->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700813 return nfs_ok;
814}
815
J.Bruce Fields71911552006-12-13 00:35:29 -0800816static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800817nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
818 struct nfsd4_readlink *readlink)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700819{
820 readlink->rl_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800821 readlink->rl_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822 return nfs_ok;
823}
824
J.Bruce Fields71911552006-12-13 00:35:29 -0800825static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800826nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
827 struct nfsd4_remove *remove)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700828{
Al Virob37ad282006-10-19 23:28:59 -0700829 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700830
Stanislav Kinsbursky5ccb0062012-07-25 16:57:22 +0400831 if (locks_in_grace(SVC_NET(rqstp)))
NeilBrownc815afc2005-06-23 22:03:00 -0700832 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800833 status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
834 remove->rm_name, remove->rm_namelen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700835 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800836 fh_unlock(&cstate->current_fh);
837 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700838 }
839 return status;
840}
841
J.Bruce Fields71911552006-12-13 00:35:29 -0800842static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800843nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
844 struct nfsd4_rename *rename)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700845{
Al Virob37ad282006-10-19 23:28:59 -0700846 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800848 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700849 return status;
Stanislav Kinsbursky5ccb0062012-07-25 16:57:22 +0400850 if (locks_in_grace(SVC_NET(rqstp)) &&
851 !(cstate->save_fh.fh_export->ex_flags & NFSEXP_NOSUBTREECHECK))
NeilBrownc815afc2005-06-23 22:03:00 -0700852 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800853 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
854 rename->rn_snamelen, &cstate->current_fh,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700855 rename->rn_tname, rename->rn_tnamelen);
J. Bruce Fields2a6cf942013-04-30 15:28:51 -0400856 if (status)
857 return status;
858 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
859 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
860 return nfs_ok;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861}
862
J.Bruce Fields71911552006-12-13 00:35:29 -0800863static __be32
Andy Adamsondcb488a32007-07-17 04:04:51 -0700864nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
865 struct nfsd4_secinfo *secinfo)
866{
867 struct svc_fh resfh;
868 struct svc_export *exp;
869 struct dentry *dentry;
870 __be32 err;
871
872 fh_init(&resfh, NFS4_FHSIZE);
J. Bruce Fields29a78a32011-04-09 11:28:53 -0400873 err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC);
874 if (err)
875 return err;
Andy Adamsondcb488a32007-07-17 04:04:51 -0700876 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
877 secinfo->si_name, secinfo->si_namelen,
878 &exp, &dentry);
879 if (err)
880 return err;
881 if (dentry->d_inode == NULL) {
882 exp_put(exp);
883 err = nfserr_noent;
884 } else
885 secinfo->si_exp = exp;
886 dput(dentry);
J. Bruce Fields56560b92010-12-16 09:57:15 -0500887 if (cstate->minorversion)
888 /* See rfc 5661 section 2.6.3.1.1.8 */
889 fh_put(&cstate->current_fh);
Andy Adamsondcb488a32007-07-17 04:04:51 -0700890 return err;
891}
892
893static __be32
J. Bruce Fields04f4ad12010-12-16 09:51:13 -0500894nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
895 struct nfsd4_secinfo_no_name *sin)
896{
897 __be32 err;
898
899 switch (sin->sin_style) {
900 case NFS4_SECINFO_STYLE4_CURRENT_FH:
901 break;
902 case NFS4_SECINFO_STYLE4_PARENT:
903 err = nfsd4_do_lookupp(rqstp, &cstate->current_fh);
904 if (err)
905 return err;
906 break;
907 default:
908 return nfserr_inval;
909 }
Kinglong Meebf18f162014-06-10 22:06:44 +0800910
911 sin->sin_exp = exp_get(cstate->current_fh.fh_export);
J. Bruce Fields04f4ad12010-12-16 09:51:13 -0500912 fh_put(&cstate->current_fh);
913 return nfs_ok;
914}
915
916static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800917nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
918 struct nfsd4_setattr *setattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919{
Al Virob37ad282006-10-19 23:28:59 -0700920 __be32 status = nfs_ok;
Al Viro96f6f982012-04-12 23:47:00 -0400921 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
Stanislav Kinsbursky5ccb0062012-07-25 16:57:22 +0400924 status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate,
J. Bruce Fields6150ef02009-02-21 13:36:16 -0800925 &setattr->sa_stateid, WR_STATE, NULL);
J. Bruce Fields375c5542006-01-18 17:43:33 -0800926 if (status) {
Greg Banks3e3b4802006-10-02 02:17:41 -0700927 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
J. Bruce Fields375c5542006-01-18 17:43:33 -0800928 return status;
929 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700930 }
Al Viro96f6f982012-04-12 23:47:00 -0400931 err = fh_want_write(&cstate->current_fh);
932 if (err)
933 return nfserrno(err);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700934 status = nfs_ok;
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800935
936 status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
937 nfsd_attrmask);
938 if (status)
939 goto out;
940
Linus Torvalds1da177e2005-04-16 15:20:36 -0700941 if (setattr->sa_acl != NULL)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800942 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
943 setattr->sa_acl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700944 if (status)
Dave Hansen18f335a2008-02-15 14:37:38 -0800945 goto out;
David Quigley18032ca2013-05-02 13:19:10 -0400946 if (setattr->sa_label.len)
947 status = nfsd4_set_nfs4_label(rqstp, &cstate->current_fh,
948 &setattr->sa_label);
949 if (status)
950 goto out;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800951 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700952 0, (time_t)0);
Dave Hansen18f335a2008-02-15 14:37:38 -0800953out:
Al Virobad0dcf2011-11-23 12:03:18 -0500954 fh_drop_write(&cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700955 return status;
956}
957
J. Bruce Fieldsffe11372012-11-15 14:52:19 -0500958static int fill_in_write_vector(struct kvec *vec, struct nfsd4_write *write)
959{
960 int i = 1;
961 int buflen = write->wr_buflen;
962
963 vec[0].iov_base = write->wr_head.iov_base;
964 vec[0].iov_len = min_t(int, buflen, write->wr_head.iov_len);
965 buflen -= vec[0].iov_len;
966
967 while (buflen) {
968 vec[i].iov_base = page_address(write->wr_pagelist[i - 1]);
969 vec[i].iov_len = min_t(int, PAGE_SIZE, buflen);
970 buflen -= vec[i].iov_len;
971 i++;
972 }
973 return i;
974}
975
J.Bruce Fields71911552006-12-13 00:35:29 -0800976static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800977nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
978 struct nfsd4_write *write)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700979{
980 stateid_t *stateid = &write->wr_stateid;
981 struct file *filp = NULL;
Al Virob37ad282006-10-19 23:28:59 -0700982 __be32 status = nfs_ok;
David Shaw31dec252009-03-05 20:16:14 -0500983 unsigned long cnt;
J. Bruce Fieldsffe11372012-11-15 14:52:19 -0500984 int nvecs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700985
986 /* no need to check permission - this will be done in nfsd_write() */
987
988 if (write->wr_offset >= OFFSET_MAX)
989 return nfserr_inval;
990
Stanislav Kinsbursky5ccb0062012-07-25 16:57:22 +0400991 status = nfs4_preprocess_stateid_op(SVC_NET(rqstp),
992 cstate, stateid, WR_STATE, &filp);
J. Bruce Fields375c5542006-01-18 17:43:33 -0800993 if (status) {
994 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
995 return status;
996 }
997
David Shaw31dec252009-03-05 20:16:14 -0500998 cnt = write->wr_buflen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999 write->wr_how_written = write->wr_stable_how;
Stanislav Kinsburskyb9c0ef82012-12-06 14:23:19 +03001000 gen_boot_verifier(&write->wr_verifier, SVC_NET(rqstp));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001001
J. Bruce Fieldsffe11372012-11-15 14:52:19 -05001002 nvecs = fill_in_write_vector(rqstp->rq_vec, write);
1003 WARN_ON_ONCE(nvecs > ARRAY_SIZE(rqstp->rq_vec));
1004
J.Bruce Fieldsca364312006-12-13 00:35:27 -08001005 status = nfsd_write(rqstp, &cstate->current_fh, filp,
J. Bruce Fieldsffe11372012-11-15 14:52:19 -05001006 write->wr_offset, rqstp->rq_vec, nvecs,
David Shaw31dec252009-03-05 20:16:14 -05001007 &cnt, &write->wr_how_written);
NeilBrown7e06b7f2005-06-23 22:03:13 -07001008 if (filp)
1009 fput(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010
David Shaw31dec252009-03-05 20:16:14 -05001011 write->wr_bytes_written = cnt;
1012
Linus Torvalds1da177e2005-04-16 15:20:36 -07001013 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001014}
1015
Anna Schumaker24bab492014-09-26 13:58:27 -04001016static __be32
1017nfsd4_seek(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1018 struct nfsd4_seek *seek)
1019{
1020 int whence;
1021 __be32 status;
1022 struct file *file;
1023
1024 status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate,
1025 &seek->seek_stateid,
1026 RD_STATE, &file);
1027 if (status) {
1028 dprintk("NFSD: nfsd4_seek: couldn't process stateid!\n");
1029 return status;
1030 }
1031
1032 switch (seek->seek_whence) {
1033 case NFS4_CONTENT_DATA:
1034 whence = SEEK_DATA;
1035 break;
1036 case NFS4_CONTENT_HOLE:
1037 whence = SEEK_HOLE;
1038 break;
1039 default:
1040 status = nfserr_union_notsupp;
1041 goto out;
1042 }
1043
1044 /*
1045 * Note: This call does change file->f_pos, but nothing in NFSD
1046 * should ever file->f_pos.
1047 */
1048 seek->seek_pos = vfs_llseek(file, seek->seek_offset, whence);
1049 if (seek->seek_pos < 0)
1050 status = nfserrno(seek->seek_pos);
1051 else if (seek->seek_pos >= i_size_read(file_inode(file)))
1052 seek->seek_eof = true;
1053
1054out:
1055 fput(file);
1056 return status;
1057}
1058
Linus Torvalds1da177e2005-04-16 15:20:36 -07001059/* This routine never returns NFS_OK! If there are no other errors, it
1060 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
1061 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
1062 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
1063 */
Al Virob37ad282006-10-19 23:28:59 -07001064static __be32
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -08001065_nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsca364312006-12-13 00:35:27 -08001066 struct nfsd4_verify *verify)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001067{
Al Viro2ebbc012006-10-19 23:28:58 -07001068 __be32 *buf, *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001069 int count;
Al Virob37ad282006-10-19 23:28:59 -07001070 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001071
Miklos Szeredi8837abc2008-06-16 13:20:29 +02001072 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001073 if (status)
1074 return status;
1075
Yu Zhiguo3c8e0312009-05-16 16:22:31 +08001076 status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
1077 if (status)
1078 return status;
1079
Linus Torvalds1da177e2005-04-16 15:20:36 -07001080 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
1081 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
1082 return nfserr_inval;
1083 if (verify->ve_attrlen & 3)
1084 return nfserr_inval;
1085
1086 /* count in words:
1087 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
1088 */
1089 count = 4 + (verify->ve_attrlen >> 2);
1090 buf = kmalloc(count << 2, GFP_KERNEL);
1091 if (!buf)
J. Bruce Fields3e772462011-08-10 19:07:33 -04001092 return nfserr_jukebox;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001093
J. Bruce Fields84822d02012-12-14 17:57:50 -05001094 p = buf;
J. Bruce Fieldsd5184652013-08-26 16:04:46 -04001095 status = nfsd4_encode_fattr_to_buf(&p, count, &cstate->current_fh,
J.Bruce Fieldsca364312006-12-13 00:35:27 -08001096 cstate->current_fh.fh_export,
J. Bruce Fieldsd5184652013-08-26 16:04:46 -04001097 cstate->current_fh.fh_dentry,
1098 verify->ve_bmval,
Frank Filz406a7ea2007-11-27 11:34:05 -08001099 rqstp, 0);
J. Bruce Fields41ae6e72013-08-21 15:32:50 -04001100 /*
1101 * If nfsd4_encode_fattr() ran out of space, assume that's because
1102 * the attributes are longer (hence different) than those given:
1103 */
J. Bruce Fields84822d02012-12-14 17:57:50 -05001104 if (status == nfserr_resource)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001105 status = nfserr_not_same;
1106 if (status)
1107 goto out_kfree;
1108
Benny Halevy95ec28c2009-04-03 08:29:08 +03001109 /* skip bitmap */
1110 p = buf + 1 + ntohl(buf[0]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001111 status = nfserr_not_same;
1112 if (ntohl(*p++) != verify->ve_attrlen)
1113 goto out_kfree;
1114 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
1115 status = nfserr_same;
1116
1117out_kfree:
1118 kfree(buf);
1119 return status;
1120}
1121
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -08001122static __be32
1123nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1124 struct nfsd4_verify *verify)
1125{
1126 __be32 status;
1127
1128 status = _nfsd4_verify(rqstp, cstate, verify);
1129 return status == nfserr_not_same ? nfs_ok : status;
1130}
1131
1132static __be32
1133nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1134 struct nfsd4_verify *verify)
1135{
1136 __be32 status;
1137
1138 status = _nfsd4_verify(rqstp, cstate, verify);
1139 return status == nfserr_same ? nfs_ok : status;
1140}
1141
Linus Torvalds1da177e2005-04-16 15:20:36 -07001142/*
1143 * NULL call.
1144 */
Al Viro7111c662006-10-19 23:28:45 -07001145static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -07001146nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
1147{
1148 return nfs_ok;
1149}
1150
Shankar Anande2b20952006-07-10 04:45:44 -07001151static inline void nfsd4_increment_op_stats(u32 opnum)
1152{
1153 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
1154 nfsdstats.nfs4_opcount[opnum]++;
1155}
1156
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001157typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
1158 void *);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001159typedef u32(*nfsd4op_rsize)(struct svc_rqst *, struct nfsd4_op *op);
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001160typedef void(*stateid_setter)(struct nfsd4_compound_state *, void *);
1161typedef void(*stateid_getter)(struct nfsd4_compound_state *, void *);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001162
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001163enum nfsd4_op_flags {
1164 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
Mi Jinlong5ece3ca2011-02-18 09:08:31 +08001165 ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */
1166 ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */
J. Bruce Fields68d93182011-04-08 17:00:50 -04001167 /* For rfc 5661 section 2.6.3.1.1: */
1168 OP_HANDLES_WRONGSEC = 1 << 3,
1169 OP_IS_PUTFH_LIKE = 1 << 4,
J. Bruce Fields10910062011-01-24 12:11:02 -05001170 /*
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001171 * These are the ops whose result size we estimate before
1172 * encoding, to avoid performing an op then not being able to
1173 * respond or cache a response. This includes writes and setattrs
1174 * as well as the operations usually called "nonidempotent":
1175 */
1176 OP_MODIFIES_SOMETHING = 1 << 5,
1177 /*
1178 * Cache compounds containing these ops in the xid-based drc:
J. Bruce Fields10910062011-01-24 12:11:02 -05001179 * We use the DRC for compounds containing non-idempotent
1180 * operations, *except* those that are 4.1-specific (since
1181 * sessions provide their own EOS), and except for stateful
1182 * operations other than setclientid and setclientid_confirm
1183 * (since sequence numbers provide EOS for open, lock, etc in
1184 * the v4.0 case).
1185 */
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001186 OP_CACHEME = 1 << 6,
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001187 /*
1188 * These are ops which clear current state id.
1189 */
1190 OP_CLEAR_STATEID = 1 << 7,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001191};
1192
1193struct nfsd4_operation {
1194 nfsd4op_func op_func;
1195 u32 op_flags;
1196 char *op_name;
Mi Jinlong58e7b332011-08-28 18:18:56 +08001197 /* Try to get response size before operation */
1198 nfsd4op_rsize op_rsize_bop;
Bryan Schumaker24ff99c2012-08-14 15:55:08 -04001199 stateid_getter op_get_currentstateid;
1200 stateid_setter op_set_currentstateid;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001201};
1202
1203static struct nfsd4_operation nfsd4_ops[];
1204
Adrian Bunkf1c7f792008-08-08 19:26:42 +03001205static const char *nfsd4_op_name(unsigned opnum);
Benny Halevyb001a1b2008-07-02 11:15:03 +03001206
Linus Torvalds1da177e2005-04-16 15:20:36 -07001207/*
J. Bruce Fields57716352010-04-21 12:27:19 -04001208 * Enforce NFSv4.1 COMPOUND ordering rules:
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001209 *
J. Bruce Fields57716352010-04-21 12:27:19 -04001210 * Also note, enforced elsewhere:
1211 * - SEQUENCE other than as first op results in
1212 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001213 * - BIND_CONN_TO_SESSION must be the only op in its compound.
1214 * (Enforced in nfsd4_bind_conn_to_session().)
J. Bruce Fields57716352010-04-21 12:27:19 -04001215 * - DESTROY_SESSION must be the final operation in a compound, if
1216 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
1217 * (Enforced in nfsd4_destroy_session().)
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001218 */
J. Bruce Fields57716352010-04-21 12:27:19 -04001219static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args)
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001220{
J. Bruce Fields57716352010-04-21 12:27:19 -04001221 struct nfsd4_op *op = &args->ops[0];
1222
1223 /* These ordering requirements don't apply to NFSv4.0: */
1224 if (args->minorversion == 0)
1225 return nfs_ok;
1226 /* This is weird, but OK, not our problem: */
1227 if (args->opcnt == 0)
1228 return nfs_ok;
1229 if (op->status == nfserr_op_illegal)
1230 return nfs_ok;
1231 if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP))
1232 return nfserr_op_not_in_session;
1233 if (op->opnum == OP_SEQUENCE)
1234 return nfs_ok;
1235 if (args->opcnt != 1)
1236 return nfserr_not_only_op;
1237 return nfs_ok;
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001238}
1239
J. Bruce Fields22b03212011-04-09 11:23:24 -04001240static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op)
1241{
1242 return &nfsd4_ops[op->opnum];
1243}
1244
J. Bruce Fields10910062011-01-24 12:11:02 -05001245bool nfsd4_cache_this_op(struct nfsd4_op *op)
1246{
J. Bruce Fieldse372ba62014-05-19 12:27:11 -04001247 if (op->opnum == OP_ILLEGAL)
1248 return false;
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001249 return OPDESC(op)->op_flags & OP_CACHEME;
J. Bruce Fields10910062011-01-24 12:11:02 -05001250}
1251
J. Bruce Fields68d93182011-04-08 17:00:50 -04001252static bool need_wrongsec_check(struct svc_rqst *rqstp)
1253{
1254 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1255 struct nfsd4_compoundargs *argp = rqstp->rq_argp;
1256 struct nfsd4_op *this = &argp->ops[resp->opcnt - 1];
1257 struct nfsd4_op *next = &argp->ops[resp->opcnt];
1258 struct nfsd4_operation *thisd;
1259 struct nfsd4_operation *nextd;
1260
1261 thisd = OPDESC(this);
1262 /*
1263 * Most ops check wronsec on our own; only the putfh-like ops
1264 * have special rules.
1265 */
1266 if (!(thisd->op_flags & OP_IS_PUTFH_LIKE))
1267 return false;
1268 /*
1269 * rfc 5661 2.6.3.1.1.6: don't bother erroring out a
1270 * put-filehandle operation if we're not going to use the
1271 * result:
1272 */
1273 if (argp->opcnt == resp->opcnt)
1274 return false;
J. Bruce Fields51904b02014-10-22 14:46:29 -04001275 if (next->opnum == OP_ILLEGAL)
1276 return false;
J. Bruce Fields68d93182011-04-08 17:00:50 -04001277 nextd = OPDESC(next);
1278 /*
1279 * Rest of 2.6.3.1.1: certain operations will return WRONGSEC
1280 * errors themselves as necessary; others should check for them
1281 * now:
1282 */
1283 return !(nextd->op_flags & OP_HANDLES_WRONGSEC);
1284}
1285
J. Bruce Fields2d124dfaa2014-01-15 16:26:42 -05001286static void svcxdr_init_encode(struct svc_rqst *rqstp,
1287 struct nfsd4_compoundres *resp)
1288{
1289 struct xdr_stream *xdr = &resp->xdr;
1290 struct xdr_buf *buf = &rqstp->rq_res;
1291 struct kvec *head = buf->head;
1292
1293 xdr->buf = buf;
J. Bruce Fieldsddd1ea52013-08-27 21:32:25 -04001294 xdr->iov = head;
J. Bruce Fields2d124dfaa2014-01-15 16:26:42 -05001295 xdr->p = head->iov_base + head->iov_len;
J. Bruce Fieldsa5cddc82014-05-12 18:10:58 -04001296 xdr->end = head->iov_base + PAGE_SIZE - rqstp->rq_auth_slack;
J. Bruce Fields6ac90392014-02-26 17:39:35 -05001297 /* Tail and page_len should be zero at this point: */
1298 buf->len = buf->head[0].iov_len;
J. Bruce Fields2825a7f2013-08-26 16:04:46 -04001299 xdr->scratch.iov_len = 0;
J. Bruce Fields05638dc2014-06-02 12:05:47 -04001300 xdr->page_ptr = buf->pages - 1;
J. Bruce Fields2825a7f2013-08-26 16:04:46 -04001301 buf->buflen = PAGE_SIZE * (1 + rqstp->rq_page_end - buf->pages)
J. Bruce Fieldsa5cddc82014-05-12 18:10:58 -04001302 - rqstp->rq_auth_slack;
J. Bruce Fields2d124dfaa2014-01-15 16:26:42 -05001303}
1304
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001305/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001306 * COMPOUND call.
1307 */
Al Viro7111c662006-10-19 23:28:45 -07001308static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -07001309nfsd4_proc_compound(struct svc_rqst *rqstp,
1310 struct nfsd4_compoundargs *args,
1311 struct nfsd4_compoundres *resp)
1312{
1313 struct nfsd4_op *op;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001314 struct nfsd4_operation *opdesc;
Andy Adamsone354d572009-03-28 11:30:52 +03001315 struct nfsd4_compound_state *cstate = &resp->cstate;
Kinglong Mee4daeed22014-03-26 17:10:37 +08001316 struct svc_fh *current_fh = &cstate->current_fh;
1317 struct svc_fh *save_fh = &cstate->save_fh;
Al Virob37ad282006-10-19 23:28:59 -07001318 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001319
J. Bruce Fields2d124dfaa2014-01-15 16:26:42 -05001320 svcxdr_init_encode(rqstp, resp);
J. Bruce Fields4aea24b2014-01-15 15:17:58 -05001321 resp->tagp = resp->xdr.p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001322 /* reserve space for: taglen, tag, and opcnt */
J. Bruce Fieldsd3f627c2014-02-26 17:00:38 -05001323 xdr_reserve_space(&resp->xdr, 8 + args->taglen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001324 resp->taglen = args->taglen;
1325 resp->tag = args->tag;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001326 resp->rqstp = rqstp;
Kinglong Mee4daeed22014-03-26 17:10:37 +08001327 cstate->minorversion = args->minorversion;
Kinglong Mee4daeed22014-03-26 17:10:37 +08001328 fh_init(current_fh, NFS4_FHSIZE);
1329 fh_init(save_fh, NFS4_FHSIZE);
NeilBrown8ff30fa2010-08-12 17:04:07 +10001330 /*
1331 * Don't use the deferral mechanism for NFSv4; compounds make it
1332 * too hard to avoid non-idempotency problems.
1333 */
Kinglong Meef15a5cf2014-06-10 18:29:39 +08001334 rqstp->rq_usedeferral = false;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001335
1336 /*
1337 * According to RFC3010, this takes precedence over all other errors.
1338 */
1339 status = nfserr_minor_vers_mismatch;
J. Bruce Fields35f7a142013-07-08 19:51:44 -04001340 if (nfsd_minorversion(args->minorversion, NFSD_TEST) <= 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001341 goto out;
1342
J. Bruce Fields57716352010-04-21 12:27:19 -04001343 status = nfs41_check_op_ordering(args);
1344 if (status) {
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001345 op = &args->ops[0];
J. Bruce Fields57716352010-04-21 12:27:19 -04001346 op->status = status;
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001347 goto encode_op;
1348 }
1349
Linus Torvalds1da177e2005-04-16 15:20:36 -07001350 while (!status && resp->opcnt < args->opcnt) {
1351 op = &args->ops[resp->opcnt++];
1352
Benny Halevyb001a1b2008-07-02 11:15:03 +03001353 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
1354 resp->opcnt, args->opcnt, op->opnum,
1355 nfsd4_op_name(op->opnum));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001356 /*
1357 * The XDR decode routines may have pre-set op->status;
1358 * for example, if there is a miscellaneous XDR error
1359 * it will be set to nfserr_bad_xdr.
1360 */
J. Bruce Fields9d313b12013-02-28 12:51:49 -08001361 if (op->status) {
1362 if (op->opnum == OP_OPEN)
1363 op->status = nfsd4_open_omfg(rqstp, cstate, op);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001364 goto encode_op;
J. Bruce Fields9d313b12013-02-28 12:51:49 -08001365 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001366
J. Bruce Fields22b03212011-04-09 11:23:24 -04001367 opdesc = OPDESC(op);
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001368
Kinglong Mee4daeed22014-03-26 17:10:37 +08001369 if (!current_fh->fh_dentry) {
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001370 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -07001371 op->status = nfserr_nofilehandle;
1372 goto encode_op;
1373 }
Kinglong Mee4daeed22014-03-26 17:10:37 +08001374 } else if (current_fh->fh_export->ex_fslocs.migrated &&
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001375 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -07001376 op->status = nfserr_moved;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001377 goto encode_op;
1378 }
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001379
Kinglong Mee23367452014-03-29 10:23:47 +08001380 fh_clear_wcc(current_fh);
1381
Mi Jinlong58e7b332011-08-28 18:18:56 +08001382 /* If op is non-idempotent */
1383 if (opdesc->op_flags & OP_MODIFIES_SOMETHING) {
J. Bruce Fields4c69d582014-01-28 16:01:04 -05001384 /*
J. Bruce Fieldsa8095f72014-03-11 17:54:34 -04001385 * Don't execute this op if we couldn't encode a
1386 * succesful reply:
1387 */
1388 u32 plen = opdesc->op_rsize_bop(rqstp, op);
1389 /*
1390 * Plus if there's another operation, make sure
J. Bruce Fields4c69d582014-01-28 16:01:04 -05001391 * we'll have space to at least encode an error:
1392 */
1393 if (resp->opcnt < args->opcnt)
1394 plen += COMPOUND_ERR_SLACK_SPACE;
Mi Jinlong58e7b332011-08-28 18:18:56 +08001395 op->status = nfsd4_check_resp_size(resp, plen);
1396 }
1397
1398 if (op->status)
1399 goto encode_op;
1400
J. Bruce Fieldsb600de72013-02-28 11:55:46 -08001401 if (opdesc->op_get_currentstateid)
1402 opdesc->op_get_currentstateid(cstate, &op->u);
1403 op->status = opdesc->op_func(rqstp, cstate, &op->u);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001404
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001405 if (!op->status) {
1406 if (opdesc->op_set_currentstateid)
1407 opdesc->op_set_currentstateid(cstate, &op->u);
1408
1409 if (opdesc->op_flags & OP_CLEAR_STATEID)
Tigran Mkrtchyan37c593c2012-02-13 22:55:32 +01001410 clear_current_stateid(cstate);
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001411
1412 if (need_wrongsec_check(rqstp))
Kinglong Mee4daeed22014-03-26 17:10:37 +08001413 op->status = check_nfsd_access(current_fh->fh_export, rqstp);
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001414 }
J. Bruce Fields68d93182011-04-08 17:00:50 -04001415
Linus Torvalds1da177e2005-04-16 15:20:36 -07001416encode_op:
Andy Adamson49557cc2009-07-23 19:02:16 -04001417 /* Only from SEQUENCE */
Kinglong Mee4daeed22014-03-26 17:10:37 +08001418 if (cstate->status == nfserr_replay_cache) {
Andy Adamsonda3846a2009-04-03 08:28:22 +03001419 dprintk("%s NFS4.1 replay from cache\n", __func__);
Andy Adamsonabfabf82009-07-23 19:02:18 -04001420 status = op->status;
Andy Adamsonda3846a2009-04-03 08:28:22 +03001421 goto out;
1422 }
Al Viroa90b0612006-10-19 23:29:03 -07001423 if (op->status == nfserr_replay_me) {
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001424 op->replay = &cstate->replay_owner->so_replay;
J. Bruce Fieldsd0a381d2014-01-30 17:18:38 -05001425 nfsd4_encode_replay(&resp->xdr, op);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001426 status = op->status = op->replay->rp_status;
1427 } else {
1428 nfsd4_encode_operation(resp, op);
1429 status = op->status;
1430 }
Benny Halevy04077172008-12-15 19:40:49 +02001431
1432 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
1433 args->ops, args->opcnt, resp->opcnt, op->opnum,
1434 be32_to_cpu(status));
1435
Jeff Layton58fb12e2014-07-29 21:34:27 -04001436 nfsd4_cstate_clear_replay(cstate);
NeilBrown7e06b7f2005-06-23 22:03:13 -07001437 /* XXX Ugh, we need to get rid of this kind of special case: */
1438 if (op->opnum == OP_READ && op->u.read.rd_filp)
1439 fput(op->u.read.rd_filp);
Shankar Anande2b20952006-07-10 04:45:44 -07001440
1441 nfsd4_increment_op_stats(op->opnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001442 }
1443
Kinglong Mee4daeed22014-03-26 17:10:37 +08001444 cstate->status = status;
1445 fh_put(current_fh);
1446 fh_put(save_fh);
1447 BUG_ON(cstate->replay_owner);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001448out:
Andy Adamson2f425872009-04-03 08:27:32 +03001449 /* Reset deferral mechanism for RPC deferrals */
Kinglong Meef15a5cf2014-06-10 18:29:39 +08001450 rqstp->rq_usedeferral = true;
J. Bruce Fields3b12cd92008-05-05 17:17:44 -04001451 dprintk("nfsv4 compound returned %d\n", ntohl(status));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001452 return status;
1453}
1454
Mi Jinlong58e7b332011-08-28 18:18:56 +08001455#define op_encode_hdr_size (2)
1456#define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
1457#define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
1458#define op_encode_change_info_maxsz (5)
1459#define nfs4_fattr_bitmap_maxsz (4)
1460
J. Bruce Fields8c7424c2014-03-10 12:19:10 -04001461/* We'll fall back on returning no lockowner if run out of space: */
1462#define op_encode_lockowner_maxsz (0)
Mi Jinlong58e7b332011-08-28 18:18:56 +08001463#define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz)
1464
1465#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1466
1467#define op_encode_ace_maxsz (3 + nfs4_owner_maxsz)
1468#define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \
1469 op_encode_ace_maxsz)
1470
1471#define op_encode_channel_attrs_maxsz (6 + 1 + 1)
1472
1473static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1474{
1475 return (op_encode_hdr_size) * sizeof(__be32);
1476}
1477
1478static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1479{
1480 return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32);
1481}
1482
1483static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1484{
1485 return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
1486}
1487
1488static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1489{
1490 return (op_encode_hdr_size + op_encode_change_info_maxsz
1491 + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1492}
1493
J. Bruce Fieldsb86cef62014-03-23 12:01:48 -04001494/*
1495 * Note since this is an idempotent operation we won't insist on failing
1496 * the op prematurely if the estimate is too large. We may turn off splice
1497 * reads unnecessarily.
1498 */
1499static inline u32 nfsd4_getattr_rsize(struct svc_rqst *rqstp,
1500 struct nfsd4_op *op)
1501{
1502 u32 *bmap = op->u.getattr.ga_bmval;
1503 u32 bmap0 = bmap[0], bmap1 = bmap[1], bmap2 = bmap[2];
1504 u32 ret = 0;
1505
1506 if (bmap0 & FATTR4_WORD0_ACL)
1507 return svc_max_payload(rqstp);
1508 if (bmap0 & FATTR4_WORD0_FS_LOCATIONS)
1509 return svc_max_payload(rqstp);
1510
1511 if (bmap1 & FATTR4_WORD1_OWNER) {
1512 ret += IDMAP_NAMESZ + 4;
1513 bmap1 &= ~FATTR4_WORD1_OWNER;
1514 }
1515 if (bmap1 & FATTR4_WORD1_OWNER_GROUP) {
1516 ret += IDMAP_NAMESZ + 4;
1517 bmap1 &= ~FATTR4_WORD1_OWNER_GROUP;
1518 }
1519 if (bmap0 & FATTR4_WORD0_FILEHANDLE) {
1520 ret += NFS4_FHSIZE + 4;
1521 bmap0 &= ~FATTR4_WORD0_FILEHANDLE;
1522 }
1523 if (bmap2 & FATTR4_WORD2_SECURITY_LABEL) {
1524 ret += NFSD4_MAX_SEC_LABEL_LEN + 12;
1525 bmap2 &= ~FATTR4_WORD2_SECURITY_LABEL;
1526 }
1527 /*
1528 * Largest of remaining attributes are 16 bytes (e.g.,
1529 * supported_attributes)
1530 */
1531 ret += 16 * (hweight32(bmap0) + hweight32(bmap1) + hweight32(bmap2));
1532 /* bitmask, length */
1533 ret += 20;
1534 return ret;
1535}
1536
Mi Jinlong58e7b332011-08-28 18:18:56 +08001537static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1538{
1539 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1540 * sizeof(__be32);
1541}
1542
1543static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1544{
1545 return (op_encode_hdr_size + op_encode_lock_denied_maxsz)
1546 * sizeof(__be32);
1547}
1548
1549static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1550{
1551 return (op_encode_hdr_size + op_encode_stateid_maxsz
1552 + op_encode_change_info_maxsz + 1
1553 + nfs4_fattr_bitmap_maxsz
1554 + op_encode_delegation_maxsz) * sizeof(__be32);
1555}
1556
1557static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1558{
1559 u32 maxcount = 0, rlen = 0;
1560
1561 maxcount = svc_max_payload(rqstp);
Kinglong Mee3c7aa152014-06-10 18:08:19 +08001562 rlen = min(op->u.read.rd_length, maxcount);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001563
J. Bruce Fields622f5602014-05-16 14:38:20 -04001564 return (op_encode_hdr_size + 2 + XDR_QUADLEN(rlen)) * sizeof(__be32);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001565}
1566
1567static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1568{
Kinglong Mee3c7aa152014-06-10 18:08:19 +08001569 u32 maxcount = 0, rlen = 0;
Mi Jinlong58e7b332011-08-28 18:18:56 +08001570
Kinglong Mee3c7aa152014-06-10 18:08:19 +08001571 maxcount = svc_max_payload(rqstp);
1572 rlen = min(op->u.readdir.rd_maxcount, maxcount);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001573
J. Bruce Fields561f0ed2014-01-20 16:37:11 -05001574 return (op_encode_hdr_size + op_encode_verifier_maxsz +
1575 XDR_QUADLEN(rlen)) * sizeof(__be32);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001576}
1577
1578static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1579{
1580 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1581 * sizeof(__be32);
1582}
1583
1584static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1585{
1586 return (op_encode_hdr_size + op_encode_change_info_maxsz
1587 + op_encode_change_info_maxsz) * sizeof(__be32);
1588}
1589
J. Bruce Fieldsccae70a2014-03-23 09:34:22 -07001590static inline u32 nfsd4_sequence_rsize(struct svc_rqst *rqstp,
1591 struct nfsd4_op *op)
1592{
J. Bruce Fieldsd1d84c92014-08-21 15:04:31 -04001593 return (op_encode_hdr_size
1594 + XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) * sizeof(__be32);
J. Bruce Fieldsccae70a2014-03-23 09:34:22 -07001595}
1596
Mi Jinlong58e7b332011-08-28 18:18:56 +08001597static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1598{
1599 return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1600}
1601
1602static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1603{
J. Bruce Fields480efae2014-03-10 14:17:55 -04001604 return (op_encode_hdr_size + 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE)) *
1605 sizeof(__be32);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001606}
1607
1608static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1609{
J. Bruce Fieldsf34e4322014-05-16 21:24:56 -04001610 return (op_encode_hdr_size + 2 + op_encode_verifier_maxsz) * sizeof(__be32);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001611}
1612
1613static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1614{
1615 return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\
Kinglong Meea8bb84b2013-12-10 15:24:36 +08001616 1 + 1 + /* eir_flags, spr_how */\
1617 4 + /* spo_must_enforce & _allow with bitmap */\
Mi Jinlong58e7b332011-08-28 18:18:56 +08001618 2 + /*eir_server_owner.so_minor_id */\
1619 /* eir_server_owner.so_major_id<> */\
1620 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1621 /* eir_server_scope<> */\
1622 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1623 1 + /* eir_server_impl_id array length */\
1624 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32);
1625}
1626
1627static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1628{
1629 return (op_encode_hdr_size + \
1630 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\
1631 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32);
1632}
1633
1634static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1635{
1636 return (op_encode_hdr_size + \
1637 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\
1638 2 + /* csr_sequence, csr_flags */\
1639 op_encode_channel_attrs_maxsz + \
1640 op_encode_channel_attrs_maxsz) * sizeof(__be32);
1641}
1642
Benny Halevy20766012009-03-28 11:32:05 +03001643static struct nfsd4_operation nfsd4_ops[] = {
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001644 [OP_ACCESS] = {
1645 .op_func = (nfsd4op_func)nfsd4_access,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001646 .op_name = "OP_ACCESS",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001647 },
1648 [OP_CLOSE] = {
1649 .op_func = (nfsd4op_func)nfsd4_close,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001650 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001651 .op_name = "OP_CLOSE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001652 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001653 .op_get_currentstateid = (stateid_getter)nfsd4_get_closestateid,
1654 .op_set_currentstateid = (stateid_setter)nfsd4_set_closestateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001655 },
1656 [OP_COMMIT] = {
1657 .op_func = (nfsd4op_func)nfsd4_commit,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001658 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001659 .op_name = "OP_COMMIT",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001660 .op_rsize_bop = (nfsd4op_rsize)nfsd4_commit_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001661 },
1662 [OP_CREATE] = {
1663 .op_func = (nfsd4op_func)nfsd4_create,
Tigran Mkrtchyand1471052012-02-13 22:55:29 +01001664 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001665 .op_name = "OP_CREATE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001666 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001667 },
1668 [OP_DELEGRETURN] = {
1669 .op_func = (nfsd4op_func)nfsd4_delegreturn,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001670 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001671 .op_name = "OP_DELEGRETURN",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001672 .op_rsize_bop = nfsd4_only_status_rsize,
Tigran Mkrtchyan9428fe12012-02-13 22:55:31 +01001673 .op_get_currentstateid = (stateid_getter)nfsd4_get_delegreturnstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001674 },
1675 [OP_GETATTR] = {
1676 .op_func = (nfsd4op_func)nfsd4_getattr,
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001677 .op_flags = ALLOWED_ON_ABSENT_FS,
J. Bruce Fieldsb86cef62014-03-23 12:01:48 -04001678 .op_rsize_bop = nfsd4_getattr_rsize,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001679 .op_name = "OP_GETATTR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001680 },
1681 [OP_GETFH] = {
1682 .op_func = (nfsd4op_func)nfsd4_getfh,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001683 .op_name = "OP_GETFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001684 },
1685 [OP_LINK] = {
1686 .op_func = (nfsd4op_func)nfsd4_link,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001687 .op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING
1688 | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001689 .op_name = "OP_LINK",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001690 .op_rsize_bop = (nfsd4op_rsize)nfsd4_link_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001691 },
1692 [OP_LOCK] = {
1693 .op_func = (nfsd4op_func)nfsd4_lock,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001694 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001695 .op_name = "OP_LOCK",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001696 .op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize,
Tigran Mkrtchyan62cd4a52012-02-13 22:55:25 +01001697 .op_set_currentstateid = (stateid_setter)nfsd4_set_lockstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001698 },
1699 [OP_LOCKT] = {
1700 .op_func = (nfsd4op_func)nfsd4_lockt,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001701 .op_name = "OP_LOCKT",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001702 },
1703 [OP_LOCKU] = {
1704 .op_func = (nfsd4op_func)nfsd4_locku,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001705 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001706 .op_name = "OP_LOCKU",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001707 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
Tigran Mkrtchyan62cd4a52012-02-13 22:55:25 +01001708 .op_get_currentstateid = (stateid_getter)nfsd4_get_lockustateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001709 },
1710 [OP_LOOKUP] = {
1711 .op_func = (nfsd4op_func)nfsd4_lookup,
Tigran Mkrtchyand1471052012-02-13 22:55:29 +01001712 .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001713 .op_name = "OP_LOOKUP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001714 },
1715 [OP_LOOKUPP] = {
1716 .op_func = (nfsd4op_func)nfsd4_lookupp,
Tigran Mkrtchyand1471052012-02-13 22:55:29 +01001717 .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001718 .op_name = "OP_LOOKUPP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001719 },
1720 [OP_NVERIFY] = {
1721 .op_func = (nfsd4op_func)nfsd4_nverify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001722 .op_name = "OP_NVERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001723 },
1724 [OP_OPEN] = {
1725 .op_func = (nfsd4op_func)nfsd4_open,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001726 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001727 .op_name = "OP_OPEN",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001728 .op_rsize_bop = (nfsd4op_rsize)nfsd4_open_rsize,
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001729 .op_set_currentstateid = (stateid_setter)nfsd4_set_openstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001730 },
1731 [OP_OPEN_CONFIRM] = {
1732 .op_func = (nfsd4op_func)nfsd4_open_confirm,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001733 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001734 .op_name = "OP_OPEN_CONFIRM",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001735 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001736 },
1737 [OP_OPEN_DOWNGRADE] = {
1738 .op_func = (nfsd4op_func)nfsd4_open_downgrade,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001739 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001740 .op_name = "OP_OPEN_DOWNGRADE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001741 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
Tigran Mkrtchyan9428fe12012-02-13 22:55:31 +01001742 .op_get_currentstateid = (stateid_getter)nfsd4_get_opendowngradestateid,
1743 .op_set_currentstateid = (stateid_setter)nfsd4_set_opendowngradestateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001744 },
1745 [OP_PUTFH] = {
1746 .op_func = (nfsd4op_func)nfsd4_putfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001747 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
J. Bruce Fields5b648692014-03-07 11:43:58 -05001748 | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001749 .op_name = "OP_PUTFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001750 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001751 },
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001752 [OP_PUTPUBFH] = {
J. Bruce Fieldsa1c8c4d2009-03-09 12:17:29 -04001753 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001754 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
J. Bruce Fields5b648692014-03-07 11:43:58 -05001755 | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001756 .op_name = "OP_PUTPUBFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001757 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001758 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001759 [OP_PUTROOTFH] = {
1760 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001761 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
J. Bruce Fields5b648692014-03-07 11:43:58 -05001762 | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001763 .op_name = "OP_PUTROOTFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001764 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001765 },
1766 [OP_READ] = {
1767 .op_func = (nfsd4op_func)nfsd4_read,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001768 .op_name = "OP_READ",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001769 .op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize,
Tigran Mkrtchyan30813e22012-02-13 22:55:26 +01001770 .op_get_currentstateid = (stateid_getter)nfsd4_get_readstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001771 },
1772 [OP_READDIR] = {
1773 .op_func = (nfsd4op_func)nfsd4_readdir,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001774 .op_name = "OP_READDIR",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001775 .op_rsize_bop = (nfsd4op_rsize)nfsd4_readdir_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001776 },
1777 [OP_READLINK] = {
1778 .op_func = (nfsd4op_func)nfsd4_readlink,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001779 .op_name = "OP_READLINK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001780 },
1781 [OP_REMOVE] = {
1782 .op_func = (nfsd4op_func)nfsd4_remove,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001783 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001784 .op_name = "OP_REMOVE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001785 .op_rsize_bop = (nfsd4op_rsize)nfsd4_remove_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001786 },
1787 [OP_RENAME] = {
1788 .op_func = (nfsd4op_func)nfsd4_rename,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001789 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001790 .op_name = "OP_RENAME",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001791 .op_rsize_bop = (nfsd4op_rsize)nfsd4_rename_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001792 },
1793 [OP_RENEW] = {
1794 .op_func = (nfsd4op_func)nfsd4_renew,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001795 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1796 | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001797 .op_name = "OP_RENEW",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001798 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1799
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001800 },
1801 [OP_RESTOREFH] = {
1802 .op_func = (nfsd4op_func)nfsd4_restorefh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001803 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
Mi Jinlong58e7b332011-08-28 18:18:56 +08001804 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001805 .op_name = "OP_RESTOREFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001806 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001807 },
1808 [OP_SAVEFH] = {
1809 .op_func = (nfsd4op_func)nfsd4_savefh,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001810 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001811 .op_name = "OP_SAVEFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001812 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001813 },
Andy Adamsondcb488a32007-07-17 04:04:51 -07001814 [OP_SECINFO] = {
1815 .op_func = (nfsd4op_func)nfsd4_secinfo,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001816 .op_flags = OP_HANDLES_WRONGSEC,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001817 .op_name = "OP_SECINFO",
Andy Adamsondcb488a32007-07-17 04:04:51 -07001818 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001819 [OP_SETATTR] = {
1820 .op_func = (nfsd4op_func)nfsd4_setattr,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001821 .op_name = "OP_SETATTR",
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001822 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001823 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setattr_rsize,
Tigran Mkrtchyan1e97b512012-02-13 22:55:30 +01001824 .op_get_currentstateid = (stateid_getter)nfsd4_get_setattrstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001825 },
1826 [OP_SETCLIENTID] = {
1827 .op_func = (nfsd4op_func)nfsd4_setclientid,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001828 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001829 | OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001830 .op_name = "OP_SETCLIENTID",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001831 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setclientid_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001832 },
1833 [OP_SETCLIENTID_CONFIRM] = {
1834 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001835 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001836 | OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001837 .op_name = "OP_SETCLIENTID_CONFIRM",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001838 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001839 },
1840 [OP_VERIFY] = {
1841 .op_func = (nfsd4op_func)nfsd4_verify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001842 .op_name = "OP_VERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001843 },
1844 [OP_WRITE] = {
1845 .op_func = (nfsd4op_func)nfsd4_write,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001846 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001847 .op_name = "OP_WRITE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001848 .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
Tigran Mkrtchyan30813e22012-02-13 22:55:26 +01001849 .op_get_currentstateid = (stateid_getter)nfsd4_get_writestateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001850 },
1851 [OP_RELEASE_LOCKOWNER] = {
1852 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001853 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1854 | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001855 .op_name = "OP_RELEASE_LOCKOWNER",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001856 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001857 },
Andy Adamson069b6ad2009-04-03 08:27:58 +03001858
1859 /* NFSv4.1 operations */
1860 [OP_EXCHANGE_ID] = {
1861 .op_func = (nfsd4op_func)nfsd4_exchange_id,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001862 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1863 | OP_MODIFIES_SOMETHING,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001864 .op_name = "OP_EXCHANGE_ID",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001865 .op_rsize_bop = (nfsd4op_rsize)nfsd4_exchange_id_rsize,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001866 },
J. Bruce Fieldscb73a9f2012-11-01 18:09:48 -04001867 [OP_BACKCHANNEL_CTL] = {
1868 .op_func = (nfsd4op_func)nfsd4_backchannel_ctl,
1869 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
1870 .op_name = "OP_BACKCHANNEL_CTL",
1871 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1872 },
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001873 [OP_BIND_CONN_TO_SESSION] = {
1874 .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001875 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1876 | OP_MODIFIES_SOMETHING,
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001877 .op_name = "OP_BIND_CONN_TO_SESSION",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001878 .op_rsize_bop = (nfsd4op_rsize)nfsd4_bind_conn_to_session_rsize,
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001879 },
Andy Adamson069b6ad2009-04-03 08:27:58 +03001880 [OP_CREATE_SESSION] = {
1881 .op_func = (nfsd4op_func)nfsd4_create_session,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001882 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1883 | OP_MODIFIES_SOMETHING,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001884 .op_name = "OP_CREATE_SESSION",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001885 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_session_rsize,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001886 },
1887 [OP_DESTROY_SESSION] = {
1888 .op_func = (nfsd4op_func)nfsd4_destroy_session,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001889 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1890 | OP_MODIFIES_SOMETHING,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001891 .op_name = "OP_DESTROY_SESSION",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001892 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001893 },
1894 [OP_SEQUENCE] = {
1895 .op_func = (nfsd4op_func)nfsd4_sequence,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001896 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001897 .op_name = "OP_SEQUENCE",
J. Bruce Fieldsd1d84c92014-08-21 15:04:31 -04001898 .op_rsize_bop = (nfsd4op_rsize)nfsd4_sequence_rsize,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001899 },
Benny Halevy094b5d72011-06-16 11:39:10 -04001900 [OP_DESTROY_CLIENTID] = {
Mi Jinlong345c2842011-10-20 17:51:39 +08001901 .op_func = (nfsd4op_func)nfsd4_destroy_clientid,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001902 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1903 | OP_MODIFIES_SOMETHING,
Benny Halevy094b5d72011-06-16 11:39:10 -04001904 .op_name = "OP_DESTROY_CLIENTID",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001905 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
Benny Halevy094b5d72011-06-16 11:39:10 -04001906 },
J. Bruce Fields4dc6ec02010-04-19 15:11:28 -04001907 [OP_RECLAIM_COMPLETE] = {
1908 .op_func = (nfsd4op_func)nfsd4_reclaim_complete,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001909 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
J. Bruce Fields4dc6ec02010-04-19 15:11:28 -04001910 .op_name = "OP_RECLAIM_COMPLETE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001911 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J. Bruce Fields4dc6ec02010-04-19 15:11:28 -04001912 },
J. Bruce Fields04f4ad12010-12-16 09:51:13 -05001913 [OP_SECINFO_NO_NAME] = {
1914 .op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001915 .op_flags = OP_HANDLES_WRONGSEC,
J. Bruce Fields04f4ad12010-12-16 09:51:13 -05001916 .op_name = "OP_SECINFO_NO_NAME",
1917 },
Bryan Schumaker17456802011-07-13 10:50:48 -04001918 [OP_TEST_STATEID] = {
1919 .op_func = (nfsd4op_func)nfsd4_test_stateid,
1920 .op_flags = ALLOWED_WITHOUT_FH,
1921 .op_name = "OP_TEST_STATEID",
1922 },
Bryan Schumakere1ca12d2011-07-13 11:04:21 -04001923 [OP_FREE_STATEID] = {
1924 .op_func = (nfsd4op_func)nfsd4_free_stateid,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001925 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
Bryan Schumakere1ca12d2011-07-13 11:04:21 -04001926 .op_name = "OP_FREE_STATEID",
J. Bruce Fieldsa1dc6952012-12-17 18:17:13 -05001927 .op_get_currentstateid = (stateid_getter)nfsd4_get_freestateid,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001928 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
Bryan Schumakere1ca12d2011-07-13 11:04:21 -04001929 },
Anna Schumaker24bab492014-09-26 13:58:27 -04001930
1931 /* NFSv4.2 operations */
1932 [OP_SEEK] = {
1933 .op_func = (nfsd4op_func)nfsd4_seek,
1934 .op_name = "OP_SEEK",
1935 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001936};
1937
J. Bruce Fields4f0cefb2014-03-11 15:39:13 -04001938int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op)
1939{
1940 struct nfsd4_operation *opdesc;
1941 nfsd4op_rsize estimator;
1942
1943 if (op->opnum == OP_ILLEGAL)
1944 return op_encode_hdr_size * sizeof(__be32);
1945 opdesc = OPDESC(op);
1946 estimator = opdesc->op_rsize_bop;
1947 return estimator ? estimator(rqstp, op) : PAGE_SIZE;
1948}
1949
J. Bruce Fields07d1f802014-03-06 20:39:29 -05001950void warn_on_nonidempotent_op(struct nfsd4_op *op)
1951{
1952 if (OPDESC(op)->op_flags & OP_MODIFIES_SOMETHING) {
1953 pr_err("unable to encode reply to nonidempotent op %d (%s)\n",
1954 op->opnum, nfsd4_op_name(op->opnum));
1955 WARN_ON_ONCE(1);
1956 }
1957}
1958
Adrian Bunkf1c7f792008-08-08 19:26:42 +03001959static const char *nfsd4_op_name(unsigned opnum)
Benny Halevyb001a1b2008-07-02 11:15:03 +03001960{
1961 if (opnum < ARRAY_SIZE(nfsd4_ops))
1962 return nfsd4_ops[opnum].op_name;
1963 return "unknown_operation";
1964}
1965
Linus Torvalds1da177e2005-04-16 15:20:36 -07001966#define nfsd4_voidres nfsd4_voidargs
Linus Torvalds1da177e2005-04-16 15:20:36 -07001967struct nfsd4_voidargs { int dummy; };
1968
Linus Torvalds1da177e2005-04-16 15:20:36 -07001969static struct svc_procedure nfsd_procedures4[2] = {
Yu Zhiguo0a93a472009-05-19 14:09:54 +08001970 [NFSPROC4_NULL] = {
1971 .pc_func = (svc_procfunc) nfsd4_proc_null,
1972 .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
1973 .pc_argsize = sizeof(struct nfsd4_voidargs),
1974 .pc_ressize = sizeof(struct nfsd4_voidres),
1975 .pc_cachetype = RC_NOCACHE,
1976 .pc_xdrressize = 1,
1977 },
1978 [NFSPROC4_COMPOUND] = {
1979 .pc_func = (svc_procfunc) nfsd4_proc_compound,
1980 .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
1981 .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
1982 .pc_argsize = sizeof(struct nfsd4_compoundargs),
1983 .pc_ressize = sizeof(struct nfsd4_compoundres),
J. Bruce Fields3e98abf2011-07-16 17:15:10 -04001984 .pc_release = nfsd4_release_compoundargs,
Yu Zhiguo0a93a472009-05-19 14:09:54 +08001985 .pc_cachetype = RC_NOCACHE,
1986 .pc_xdrressize = NFSD_BUFSIZE/4,
1987 },
Linus Torvalds1da177e2005-04-16 15:20:36 -07001988};
1989
1990struct svc_version nfsd_version4 = {
1991 .vs_vers = 4,
1992 .vs_nproc = 2,
1993 .vs_proc = nfsd_procedures4,
1994 .vs_dispatch = nfsd_dispatch,
1995 .vs_xdrsize = NFS4_SVC_XDRSIZE,
Kinglong Mee7e55b592013-12-31 13:17:20 +08001996 .vs_rpcb_optnl = 1,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001997};
1998
1999/*
2000 * Local variables:
2001 * c-basic-offset: 8
2002 * End:
2003 */