blob: 9d60a1c08105ca07afe29abfb2e0ec8ec877366e [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)
180 cache_get(&src->fh_export->h);
181 *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 nfs4_lock_state();
389
390 /* check seqid for replay. set nfs4_owner */
Andy Adamson66689582009-04-03 08:28:45 +0300391 resp = rqstp->rq_resp;
Stanislav Kinsbursky3320fef192012-11-14 18:22:07 +0300392 status = nfsd4_process_open1(&resp->cstate, open, nn);
Al Viroa90b0612006-10-19 23:29:03 -0700393 if (status == nfserr_replay_me) {
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400394 struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800395 fh_put(&cstate->current_fh);
J. Bruce Fieldsa4773c082009-02-02 17:23:10 -0500396 fh_copy_shallow(&cstate->current_fh.fh_handle,
397 &rp->rp_openfh);
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200398 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399 if (status)
400 dprintk("nfsd4_open: replay failed"
401 " restoring previous filehandle\n");
402 else
Al Viroa90b0612006-10-19 23:29:03 -0700403 status = nfserr_replay_me;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 }
405 if (status)
406 goto out;
J. Bruce Fields9d313b12013-02-28 12:51:49 -0800407 if (open->op_xdr_error) {
408 status = open->op_xdr_error;
409 goto out;
410 }
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800411
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800412 status = nfsd4_check_open_attributes(rqstp, cstate, open);
413 if (status)
414 goto out;
415
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800416 /* Openowner is now set, so sequence id will get bumped. Now we need
417 * these checks before we do any creates: */
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800418 status = nfserr_grace;
Stanislav Kinsbursky3320fef192012-11-14 18:22:07 +0300419 if (locks_in_grace(net) && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800420 goto out;
421 status = nfserr_no_grace;
Stanislav Kinsbursky3320fef192012-11-14 18:22:07 +0300422 if (!locks_in_grace(net) && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800423 goto out;
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800424
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425 switch (open->op_claim_type) {
NeilBrown0dd3c192005-06-23 22:02:56 -0700426 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427 case NFS4_OPEN_CLAIM_NULL:
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500428 status = do_open_lookup(rqstp, cstate, open, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429 if (status)
430 goto out;
431 break;
432 case NFS4_OPEN_CLAIM_PREVIOUS:
J. Bruce Fieldsdad1c062011-09-12 12:24:13 -0400433 open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
Stanislav Kinsbursky3320fef192012-11-14 18:22:07 +0300434 status = nfs4_check_open_reclaim(&open->op_clientid,
435 cstate->minorversion,
436 nn);
Mi Jinlong0cf99b92011-11-23 10:48:40 +0800437 if (status)
438 goto out;
J. Bruce Fields8b289b22011-10-19 11:52:12 -0400439 case NFS4_OPEN_CLAIM_FH:
440 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
J. Bruce Fieldsbbc9c362013-03-22 18:03:49 -0400441 status = do_open_fhandle(rqstp, cstate, open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442 if (status)
443 goto out;
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500444 resfh = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445 break;
J. Bruce Fields8b289b22011-10-19 11:52:12 -0400446 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
J. Bruce Fieldsdad1c062011-09-12 12:24:13 -0400448 open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400449 dprintk("NFSD: unsupported OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 open->op_claim_type);
451 status = nfserr_notsupp;
452 goto out;
453 default:
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400454 dprintk("NFSD: Invalid OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455 open->op_claim_type);
456 status = nfserr_inval;
457 goto out;
458 }
459 /*
460 * nfsd4_process_open2() does the actual opening of the file. If
461 * successful, it (1) truncates the file if open->op_truncate was
462 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
463 */
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500464 status = nfsd4_process_open2(rqstp, resfh, open);
J. Bruce Fields856121b2011-10-13 11:37:11 -0400465 WARN_ON(status && open->op_created);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466out:
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500467 if (resfh && resfh != &cstate->current_fh) {
468 fh_dup2(&cstate->current_fh, resfh);
469 fh_put(resfh);
470 kfree(resfh);
471 }
J. Bruce Fieldsd29b20c2011-10-13 15:12:59 -0400472 nfsd4_cleanup_open_state(open, status);
J. Bruce Fields3d74e6a2013-03-22 17:44:19 -0400473 if (open->op_openowner && !nfsd4_has_session(cstate))
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400474 cstate->replay_owner = &open->op_openowner->oo_owner;
J. Bruce Fields9411b1d2013-04-01 16:37:12 -0400475 nfsd4_bump_seqid(cstate, status);
476 if (!cstate->replay_owner)
J. Bruce Fields5ec094c2011-08-30 17:02:48 -0400477 nfs4_unlock_state();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478 return status;
479}
480
481/*
J. Bruce Fields9d313b12013-02-28 12:51:49 -0800482 * OPEN is the only seqid-mutating operation whose decoding can fail
483 * with a seqid-mutating error (specifically, decoding of user names in
484 * the attributes). Therefore we have to do some processing to look up
485 * the stateowner so that we can bump the seqid.
486 */
487static __be32 nfsd4_open_omfg(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_op *op)
488{
489 struct nfsd4_open *open = (struct nfsd4_open *)&op->u;
490
491 if (!seqid_mutating_err(ntohl(op->status)))
492 return op->status;
493 if (nfsd4_has_session(cstate))
494 return op->status;
495 open->op_xdr_error = op->status;
496 return nfsd4_open(rqstp, cstate, open);
497}
498
499/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500 * filehandle-manipulating ops.
501 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800502static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800503nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
504 struct svc_fh **getfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800506 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507 return nfserr_nofilehandle;
508
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800509 *getfh = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510 return nfs_ok;
511}
512
J.Bruce Fields71911552006-12-13 00:35:29 -0800513static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800514nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
515 struct nfsd4_putfh *putfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800517 fh_put(&cstate->current_fh);
518 cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
519 memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
520 putfh->pf_fhlen);
J. Bruce Fields68d93182011-04-08 17:00:50 -0400521 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522}
523
J.Bruce Fields71911552006-12-13 00:35:29 -0800524static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800525nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
526 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527{
Al Virob37ad282006-10-19 23:28:59 -0700528 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800530 fh_put(&cstate->current_fh);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700531 status = exp_pseudoroot(rqstp, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532 return status;
533}
534
J.Bruce Fields71911552006-12-13 00:35:29 -0800535static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800536nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
537 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800539 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540 return nfserr_restorefh;
541
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800542 fh_dup2(&cstate->current_fh, &cstate->save_fh);
Tigran Mkrtchyan37c593c2012-02-13 22:55:32 +0100543 if (HAS_STATE_ID(cstate, SAVED_STATE_ID_FLAG)) {
544 memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t));
545 SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG);
546 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547 return nfs_ok;
548}
549
J.Bruce Fields71911552006-12-13 00:35:29 -0800550static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800551nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
552 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800554 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555 return nfserr_nofilehandle;
556
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800557 fh_dup2(&cstate->save_fh, &cstate->current_fh);
Tigran Mkrtchyan37c593c2012-02-13 22:55:32 +0100558 if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG)) {
559 memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t));
560 SET_STATE_ID(cstate, SAVED_STATE_ID_FLAG);
561 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562 return nfs_ok;
563}
564
565/*
566 * misc nfsv4 ops
567 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800568static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800569nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
570 struct nfsd4_access *access)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571{
572 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
573 return nfserr_inval;
574
575 access->ac_resp_access = access->ac_req_access;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800576 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
577 &access->ac_supported);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578}
579
Stanislav Kinsburskyb9c0ef82012-12-06 14:23:19 +0300580static void gen_boot_verifier(nfs4_verifier *verifier, struct net *net)
Chuck Leverab4684d2012-03-02 17:13:50 -0500581{
582 __be32 verf[2];
Stanislav Kinsburskyb9c0ef82012-12-06 14:23:19 +0300583 struct nfsd_net *nn = net_generic(net, nfsd_net_id);
Chuck Leverab4684d2012-03-02 17:13:50 -0500584
Stanislav Kinsburskyb9c0ef82012-12-06 14:23:19 +0300585 verf[0] = (__be32)nn->nfssvc_boot.tv_sec;
586 verf[1] = (__be32)nn->nfssvc_boot.tv_usec;
Chuck Leverab4684d2012-03-02 17:13:50 -0500587 memcpy(verifier->data, verf, sizeof(verifier->data));
588}
589
J.Bruce Fields71911552006-12-13 00:35:29 -0800590static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800591nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
592 struct nfsd4_commit *commit)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593{
Stanislav Kinsburskyb9c0ef82012-12-06 14:23:19 +0300594 gen_boot_verifier(&commit->co_verf, SVC_NET(rqstp));
J. Bruce Fields75c096f2011-08-15 18:39:32 -0400595 return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800596 commit->co_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597}
598
Al Virob37ad282006-10-19 23:28:59 -0700599static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800600nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
601 struct nfsd4_create *create)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602{
603 struct svc_fh resfh;
Al Virob37ad282006-10-19 23:28:59 -0700604 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 dev_t rdev;
606
607 fh_init(&resfh, NFS4_FHSIZE);
608
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200609 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
610 NFSD_MAY_CREATE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611 if (status)
612 return status;
613
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800614 status = check_attr_support(rqstp, cstate, create->cr_bmval,
615 nfsd_attrmask);
616 if (status)
617 return status;
618
Linus Torvalds1da177e2005-04-16 15:20:36 -0700619 switch (create->cr_type) {
620 case NF4LNK:
621 /* ugh! we have to null-terminate the linktext, or
622 * vfs_symlink() will choke. it is always safe to
623 * null-terminate by brute force, since at worst we
624 * will overwrite the first byte of the create namelen
625 * in the XDR buffer, which has already been extracted
626 * during XDR decode.
627 */
628 create->cr_linkname[create->cr_linklen] = 0;
629
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800630 status = nfsd_symlink(rqstp, &cstate->current_fh,
631 create->cr_name, create->cr_namelen,
632 create->cr_linkname, create->cr_linklen,
633 &resfh, &create->cr_iattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634 break;
635
636 case NF4BLK:
637 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
638 if (MAJOR(rdev) != create->cr_specdata1 ||
639 MINOR(rdev) != create->cr_specdata2)
640 return nfserr_inval;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800641 status = nfsd_create(rqstp, &cstate->current_fh,
642 create->cr_name, create->cr_namelen,
643 &create->cr_iattr, S_IFBLK, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644 break;
645
646 case NF4CHR:
647 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
648 if (MAJOR(rdev) != create->cr_specdata1 ||
649 MINOR(rdev) != create->cr_specdata2)
650 return nfserr_inval;
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_IFCHR, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700654 break;
655
656 case NF4SOCK:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800657 status = nfsd_create(rqstp, &cstate->current_fh,
658 create->cr_name, create->cr_namelen,
659 &create->cr_iattr, S_IFSOCK, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 break;
661
662 case NF4FIFO:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800663 status = nfsd_create(rqstp, &cstate->current_fh,
664 create->cr_name, create->cr_namelen,
665 &create->cr_iattr, S_IFIFO, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666 break;
667
668 case NF4DIR:
669 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800670 status = nfsd_create(rqstp, &cstate->current_fh,
671 create->cr_name, create->cr_namelen,
672 &create->cr_iattr, S_IFDIR, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700673 break;
674
675 default:
676 status = nfserr_badtype;
677 }
678
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800679 if (status)
680 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681
David Quigley18032ca2013-05-02 13:19:10 -0400682 if (create->cr_label.len)
683 nfsd4_security_inode_setsecctx(&resfh, &create->cr_label, create->cr_bmval);
684
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800685 if (create->cr_acl != NULL)
686 do_set_nfs4_acl(rqstp, &resfh, create->cr_acl,
687 create->cr_bmval);
688
689 fh_unlock(&cstate->current_fh);
690 set_change_info(&create->cr_cinfo, &cstate->current_fh);
691 fh_dup2(&cstate->current_fh, &resfh);
692out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700693 fh_put(&resfh);
694 return status;
695}
696
J.Bruce Fields71911552006-12-13 00:35:29 -0800697static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800698nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
699 struct nfsd4_getattr *getattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700{
Al Virob37ad282006-10-19 23:28:59 -0700701 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700702
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200703 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700704 if (status)
705 return status;
706
707 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
708 return nfserr_inval;
709
Andy Adamson7e705702009-04-03 08:29:11 +0300710 getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
711 getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
712 getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800714 getattr->ga_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715 return nfs_ok;
716}
717
J.Bruce Fields71911552006-12-13 00:35:29 -0800718static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800719nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
720 struct nfsd4_link *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700721{
Al Virob37ad282006-10-19 23:28:59 -0700722 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800724 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725 return status;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800726 status = nfsd_link(rqstp, &cstate->current_fh,
727 link->li_name, link->li_namelen, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700728 if (!status)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800729 set_change_info(&link->li_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700730 return status;
731}
732
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500733static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700734{
735 struct svc_fh tmp_fh;
Al Virob37ad282006-10-19 23:28:59 -0700736 __be32 ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700737
738 fh_init(&tmp_fh, NFS4_FHSIZE);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700739 ret = exp_pseudoroot(rqstp, &tmp_fh);
740 if (ret)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741 return ret;
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500742 if (tmp_fh.fh_dentry == fh->fh_dentry) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700743 fh_put(&tmp_fh);
744 return nfserr_noent;
745 }
746 fh_put(&tmp_fh);
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500747 return nfsd_lookup(rqstp, fh, "..", 2, fh);
748}
749
750static __be32
751nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
752 void *arg)
753{
754 return nfsd4_do_lookupp(rqstp, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700755}
756
J.Bruce Fields71911552006-12-13 00:35:29 -0800757static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800758nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
759 struct nfsd4_lookup *lookup)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800761 return nfsd_lookup(rqstp, &cstate->current_fh,
762 lookup->lo_name, lookup->lo_len,
763 &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700764}
765
J.Bruce Fields71911552006-12-13 00:35:29 -0800766static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800767nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
768 struct nfsd4_read *read)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769{
Al Virob37ad282006-10-19 23:28:59 -0700770 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771
772 /* no need to check permission - this will be done in nfsd_read() */
773
NeilBrown7e06b7f2005-06-23 22:03:13 -0700774 read->rd_filp = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700775 if (read->rd_offset >= OFFSET_MAX)
776 return nfserr_inval;
777
J. Bruce Fields9b3234b2012-12-04 18:03:46 -0500778 /*
779 * If we do a zero copy read, then a client will see read data
780 * that reflects the state of the file *after* performing the
781 * following compound.
782 *
783 * To ensure proper ordering, we therefore turn off zero copy if
784 * the client wants us to do more in this compound:
785 */
786 if (!nfsd4_last_compound_op(rqstp))
787 rqstp->rq_splice_ok = false;
788
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789 /* check stateid */
Stanislav Kinsbursky5ccb0062012-07-25 16:57:22 +0400790 if ((status = nfs4_preprocess_stateid_op(SVC_NET(rqstp),
791 cstate, &read->rd_stateid,
Benny Halevydd453df2009-04-03 08:28:41 +0300792 RD_STATE, &read->rd_filp))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
794 goto out;
795 }
796 status = nfs_ok;
797out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700798 read->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800799 read->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700800 return status;
801}
802
J.Bruce Fields71911552006-12-13 00:35:29 -0800803static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800804nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
805 struct nfsd4_readdir *readdir)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806{
807 u64 cookie = readdir->rd_cookie;
808 static const nfs4_verifier zeroverf;
809
810 /* no need to check permission - this will be done in nfsd_readdir() */
811
812 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
813 return nfserr_inval;
814
Andy Adamson7e705702009-04-03 08:29:11 +0300815 readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
816 readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
817 readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700818
Bernd Schubert832023b2011-08-08 17:38:08 +0200819 if ((cookie == 1) || (cookie == 2) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
821 return nfserr_bad_cookie;
822
823 readdir->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800824 readdir->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825 return nfs_ok;
826}
827
J.Bruce Fields71911552006-12-13 00:35:29 -0800828static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800829nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
830 struct nfsd4_readlink *readlink)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831{
832 readlink->rl_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800833 readlink->rl_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834 return nfs_ok;
835}
836
J.Bruce Fields71911552006-12-13 00:35:29 -0800837static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800838nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
839 struct nfsd4_remove *remove)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840{
Al Virob37ad282006-10-19 23:28:59 -0700841 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700842
Stanislav Kinsbursky5ccb0062012-07-25 16:57:22 +0400843 if (locks_in_grace(SVC_NET(rqstp)))
NeilBrownc815afc2005-06-23 22:03:00 -0700844 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800845 status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
846 remove->rm_name, remove->rm_namelen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800848 fh_unlock(&cstate->current_fh);
849 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850 }
851 return status;
852}
853
J.Bruce Fields71911552006-12-13 00:35:29 -0800854static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800855nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
856 struct nfsd4_rename *rename)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857{
Al Virob37ad282006-10-19 23:28:59 -0700858 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700859
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800860 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861 return status;
Stanislav Kinsbursky5ccb0062012-07-25 16:57:22 +0400862 if (locks_in_grace(SVC_NET(rqstp)) &&
863 !(cstate->save_fh.fh_export->ex_flags & NFSEXP_NOSUBTREECHECK))
NeilBrownc815afc2005-06-23 22:03:00 -0700864 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800865 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
866 rename->rn_snamelen, &cstate->current_fh,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867 rename->rn_tname, rename->rn_tnamelen);
J. Bruce Fields2a6cf942013-04-30 15:28:51 -0400868 if (status)
869 return status;
870 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
871 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
872 return nfs_ok;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700873}
874
J.Bruce Fields71911552006-12-13 00:35:29 -0800875static __be32
Andy Adamsondcb488a32007-07-17 04:04:51 -0700876nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
877 struct nfsd4_secinfo *secinfo)
878{
879 struct svc_fh resfh;
880 struct svc_export *exp;
881 struct dentry *dentry;
882 __be32 err;
883
884 fh_init(&resfh, NFS4_FHSIZE);
J. Bruce Fields29a78a32011-04-09 11:28:53 -0400885 err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC);
886 if (err)
887 return err;
Andy Adamsondcb488a32007-07-17 04:04:51 -0700888 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
889 secinfo->si_name, secinfo->si_namelen,
890 &exp, &dentry);
891 if (err)
892 return err;
893 if (dentry->d_inode == NULL) {
894 exp_put(exp);
895 err = nfserr_noent;
896 } else
897 secinfo->si_exp = exp;
898 dput(dentry);
J. Bruce Fields56560b92010-12-16 09:57:15 -0500899 if (cstate->minorversion)
900 /* See rfc 5661 section 2.6.3.1.1.8 */
901 fh_put(&cstate->current_fh);
Andy Adamsondcb488a32007-07-17 04:04:51 -0700902 return err;
903}
904
905static __be32
J. Bruce Fields04f4ad12010-12-16 09:51:13 -0500906nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
907 struct nfsd4_secinfo_no_name *sin)
908{
909 __be32 err;
910
911 switch (sin->sin_style) {
912 case NFS4_SECINFO_STYLE4_CURRENT_FH:
913 break;
914 case NFS4_SECINFO_STYLE4_PARENT:
915 err = nfsd4_do_lookupp(rqstp, &cstate->current_fh);
916 if (err)
917 return err;
918 break;
919 default:
920 return nfserr_inval;
921 }
922 exp_get(cstate->current_fh.fh_export);
923 sin->sin_exp = cstate->current_fh.fh_export;
924 fh_put(&cstate->current_fh);
925 return nfs_ok;
926}
927
928static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800929nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
930 struct nfsd4_setattr *setattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700931{
Al Virob37ad282006-10-19 23:28:59 -0700932 __be32 status = nfs_ok;
Al Viro96f6f982012-04-12 23:47:00 -0400933 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700934
Linus Torvalds1da177e2005-04-16 15:20:36 -0700935 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
Stanislav Kinsbursky5ccb0062012-07-25 16:57:22 +0400936 status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate,
J. Bruce Fields6150ef02009-02-21 13:36:16 -0800937 &setattr->sa_stateid, WR_STATE, NULL);
J. Bruce Fields375c5542006-01-18 17:43:33 -0800938 if (status) {
Greg Banks3e3b4802006-10-02 02:17:41 -0700939 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
J. Bruce Fields375c5542006-01-18 17:43:33 -0800940 return status;
941 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700942 }
Al Viro96f6f982012-04-12 23:47:00 -0400943 err = fh_want_write(&cstate->current_fh);
944 if (err)
945 return nfserrno(err);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946 status = nfs_ok;
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800947
948 status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
949 nfsd_attrmask);
950 if (status)
951 goto out;
952
Linus Torvalds1da177e2005-04-16 15:20:36 -0700953 if (setattr->sa_acl != NULL)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800954 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
955 setattr->sa_acl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956 if (status)
Dave Hansen18f335a2008-02-15 14:37:38 -0800957 goto out;
David Quigley18032ca2013-05-02 13:19:10 -0400958 if (setattr->sa_label.len)
959 status = nfsd4_set_nfs4_label(rqstp, &cstate->current_fh,
960 &setattr->sa_label);
961 if (status)
962 goto out;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800963 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700964 0, (time_t)0);
Dave Hansen18f335a2008-02-15 14:37:38 -0800965out:
Al Virobad0dcf2011-11-23 12:03:18 -0500966 fh_drop_write(&cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967 return status;
968}
969
J. Bruce Fieldsffe11372012-11-15 14:52:19 -0500970static int fill_in_write_vector(struct kvec *vec, struct nfsd4_write *write)
971{
972 int i = 1;
973 int buflen = write->wr_buflen;
974
975 vec[0].iov_base = write->wr_head.iov_base;
976 vec[0].iov_len = min_t(int, buflen, write->wr_head.iov_len);
977 buflen -= vec[0].iov_len;
978
979 while (buflen) {
980 vec[i].iov_base = page_address(write->wr_pagelist[i - 1]);
981 vec[i].iov_len = min_t(int, PAGE_SIZE, buflen);
982 buflen -= vec[i].iov_len;
983 i++;
984 }
985 return i;
986}
987
J.Bruce Fields71911552006-12-13 00:35:29 -0800988static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800989nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
990 struct nfsd4_write *write)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991{
992 stateid_t *stateid = &write->wr_stateid;
993 struct file *filp = NULL;
Al Virob37ad282006-10-19 23:28:59 -0700994 __be32 status = nfs_ok;
David Shaw31dec252009-03-05 20:16:14 -0500995 unsigned long cnt;
J. Bruce Fieldsffe11372012-11-15 14:52:19 -0500996 int nvecs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700997
998 /* no need to check permission - this will be done in nfsd_write() */
999
1000 if (write->wr_offset >= OFFSET_MAX)
1001 return nfserr_inval;
1002
Stanislav Kinsbursky5ccb0062012-07-25 16:57:22 +04001003 status = nfs4_preprocess_stateid_op(SVC_NET(rqstp),
1004 cstate, stateid, WR_STATE, &filp);
J. Bruce Fields375c5542006-01-18 17:43:33 -08001005 if (status) {
1006 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
1007 return status;
1008 }
1009
David Shaw31dec252009-03-05 20:16:14 -05001010 cnt = write->wr_buflen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001011 write->wr_how_written = write->wr_stable_how;
Stanislav Kinsburskyb9c0ef82012-12-06 14:23:19 +03001012 gen_boot_verifier(&write->wr_verifier, SVC_NET(rqstp));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001013
J. Bruce Fieldsffe11372012-11-15 14:52:19 -05001014 nvecs = fill_in_write_vector(rqstp->rq_vec, write);
1015 WARN_ON_ONCE(nvecs > ARRAY_SIZE(rqstp->rq_vec));
1016
J.Bruce Fieldsca364312006-12-13 00:35:27 -08001017 status = nfsd_write(rqstp, &cstate->current_fh, filp,
J. Bruce Fieldsffe11372012-11-15 14:52:19 -05001018 write->wr_offset, rqstp->rq_vec, nvecs,
David Shaw31dec252009-03-05 20:16:14 -05001019 &cnt, &write->wr_how_written);
NeilBrown7e06b7f2005-06-23 22:03:13 -07001020 if (filp)
1021 fput(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001022
David Shaw31dec252009-03-05 20:16:14 -05001023 write->wr_bytes_written = cnt;
1024
Linus Torvalds1da177e2005-04-16 15:20:36 -07001025 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001026}
1027
1028/* This routine never returns NFS_OK! If there are no other errors, it
1029 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
1030 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
1031 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
1032 */
Al Virob37ad282006-10-19 23:28:59 -07001033static __be32
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -08001034_nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsca364312006-12-13 00:35:27 -08001035 struct nfsd4_verify *verify)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001036{
Al Viro2ebbc012006-10-19 23:28:58 -07001037 __be32 *buf, *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001038 int count;
Al Virob37ad282006-10-19 23:28:59 -07001039 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001040
Miklos Szeredi8837abc2008-06-16 13:20:29 +02001041 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001042 if (status)
1043 return status;
1044
Yu Zhiguo3c8e0312009-05-16 16:22:31 +08001045 status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
1046 if (status)
1047 return status;
1048
Linus Torvalds1da177e2005-04-16 15:20:36 -07001049 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
1050 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
1051 return nfserr_inval;
1052 if (verify->ve_attrlen & 3)
1053 return nfserr_inval;
1054
1055 /* count in words:
1056 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
1057 */
1058 count = 4 + (verify->ve_attrlen >> 2);
1059 buf = kmalloc(count << 2, GFP_KERNEL);
1060 if (!buf)
J. Bruce Fields3e772462011-08-10 19:07:33 -04001061 return nfserr_jukebox;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001062
J. Bruce Fields84822d02012-12-14 17:57:50 -05001063 p = buf;
J.Bruce Fieldsca364312006-12-13 00:35:27 -08001064 status = nfsd4_encode_fattr(&cstate->current_fh,
1065 cstate->current_fh.fh_export,
J. Bruce Fields84822d02012-12-14 17:57:50 -05001066 cstate->current_fh.fh_dentry, &p,
1067 count, verify->ve_bmval,
Frank Filz406a7ea2007-11-27 11:34:05 -08001068 rqstp, 0);
J. Bruce Fields41ae6e72013-08-21 15:32:50 -04001069 /*
1070 * If nfsd4_encode_fattr() ran out of space, assume that's because
1071 * the attributes are longer (hence different) than those given:
1072 */
J. Bruce Fields84822d02012-12-14 17:57:50 -05001073 if (status == nfserr_resource)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001074 status = nfserr_not_same;
1075 if (status)
1076 goto out_kfree;
1077
Benny Halevy95ec28c2009-04-03 08:29:08 +03001078 /* skip bitmap */
1079 p = buf + 1 + ntohl(buf[0]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001080 status = nfserr_not_same;
1081 if (ntohl(*p++) != verify->ve_attrlen)
1082 goto out_kfree;
1083 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
1084 status = nfserr_same;
1085
1086out_kfree:
1087 kfree(buf);
1088 return status;
1089}
1090
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -08001091static __be32
1092nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1093 struct nfsd4_verify *verify)
1094{
1095 __be32 status;
1096
1097 status = _nfsd4_verify(rqstp, cstate, verify);
1098 return status == nfserr_not_same ? nfs_ok : status;
1099}
1100
1101static __be32
1102nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1103 struct nfsd4_verify *verify)
1104{
1105 __be32 status;
1106
1107 status = _nfsd4_verify(rqstp, cstate, verify);
1108 return status == nfserr_same ? nfs_ok : status;
1109}
1110
Linus Torvalds1da177e2005-04-16 15:20:36 -07001111/*
1112 * NULL call.
1113 */
Al Viro7111c662006-10-19 23:28:45 -07001114static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -07001115nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
1116{
1117 return nfs_ok;
1118}
1119
Shankar Anande2b20952006-07-10 04:45:44 -07001120static inline void nfsd4_increment_op_stats(u32 opnum)
1121{
1122 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
1123 nfsdstats.nfs4_opcount[opnum]++;
1124}
1125
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001126typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
1127 void *);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001128typedef u32(*nfsd4op_rsize)(struct svc_rqst *, struct nfsd4_op *op);
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001129typedef void(*stateid_setter)(struct nfsd4_compound_state *, void *);
1130typedef void(*stateid_getter)(struct nfsd4_compound_state *, void *);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001131
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001132enum nfsd4_op_flags {
1133 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
Mi Jinlong5ece3ca2011-02-18 09:08:31 +08001134 ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */
1135 ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */
J. Bruce Fields68d93182011-04-08 17:00:50 -04001136 /* For rfc 5661 section 2.6.3.1.1: */
1137 OP_HANDLES_WRONGSEC = 1 << 3,
1138 OP_IS_PUTFH_LIKE = 1 << 4,
J. Bruce Fields10910062011-01-24 12:11:02 -05001139 /*
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001140 * These are the ops whose result size we estimate before
1141 * encoding, to avoid performing an op then not being able to
1142 * respond or cache a response. This includes writes and setattrs
1143 * as well as the operations usually called "nonidempotent":
1144 */
1145 OP_MODIFIES_SOMETHING = 1 << 5,
1146 /*
1147 * Cache compounds containing these ops in the xid-based drc:
J. Bruce Fields10910062011-01-24 12:11:02 -05001148 * We use the DRC for compounds containing non-idempotent
1149 * operations, *except* those that are 4.1-specific (since
1150 * sessions provide their own EOS), and except for stateful
1151 * operations other than setclientid and setclientid_confirm
1152 * (since sequence numbers provide EOS for open, lock, etc in
1153 * the v4.0 case).
1154 */
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001155 OP_CACHEME = 1 << 6,
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001156 /*
1157 * These are ops which clear current state id.
1158 */
1159 OP_CLEAR_STATEID = 1 << 7,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001160};
1161
1162struct nfsd4_operation {
1163 nfsd4op_func op_func;
1164 u32 op_flags;
1165 char *op_name;
Mi Jinlong58e7b332011-08-28 18:18:56 +08001166 /* Try to get response size before operation */
1167 nfsd4op_rsize op_rsize_bop;
Bryan Schumaker24ff99c2012-08-14 15:55:08 -04001168 stateid_getter op_get_currentstateid;
1169 stateid_setter op_set_currentstateid;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001170};
1171
1172static struct nfsd4_operation nfsd4_ops[];
1173
Trond Myklebust8f199b82012-03-20 15:11:17 -04001174#ifdef NFSD_DEBUG
Adrian Bunkf1c7f792008-08-08 19:26:42 +03001175static const char *nfsd4_op_name(unsigned opnum);
Trond Myklebust8f199b82012-03-20 15:11:17 -04001176#endif
Benny Halevyb001a1b2008-07-02 11:15:03 +03001177
Linus Torvalds1da177e2005-04-16 15:20:36 -07001178/*
J. Bruce Fields57716352010-04-21 12:27:19 -04001179 * Enforce NFSv4.1 COMPOUND ordering rules:
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001180 *
J. Bruce Fields57716352010-04-21 12:27:19 -04001181 * Also note, enforced elsewhere:
1182 * - SEQUENCE other than as first op results in
1183 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001184 * - BIND_CONN_TO_SESSION must be the only op in its compound.
1185 * (Enforced in nfsd4_bind_conn_to_session().)
J. Bruce Fields57716352010-04-21 12:27:19 -04001186 * - DESTROY_SESSION must be the final operation in a compound, if
1187 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
1188 * (Enforced in nfsd4_destroy_session().)
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001189 */
J. Bruce Fields57716352010-04-21 12:27:19 -04001190static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args)
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001191{
J. Bruce Fields57716352010-04-21 12:27:19 -04001192 struct nfsd4_op *op = &args->ops[0];
1193
1194 /* These ordering requirements don't apply to NFSv4.0: */
1195 if (args->minorversion == 0)
1196 return nfs_ok;
1197 /* This is weird, but OK, not our problem: */
1198 if (args->opcnt == 0)
1199 return nfs_ok;
1200 if (op->status == nfserr_op_illegal)
1201 return nfs_ok;
1202 if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP))
1203 return nfserr_op_not_in_session;
1204 if (op->opnum == OP_SEQUENCE)
1205 return nfs_ok;
1206 if (args->opcnt != 1)
1207 return nfserr_not_only_op;
1208 return nfs_ok;
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001209}
1210
J. Bruce Fields22b03212011-04-09 11:23:24 -04001211static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op)
1212{
1213 return &nfsd4_ops[op->opnum];
1214}
1215
J. Bruce Fields10910062011-01-24 12:11:02 -05001216bool nfsd4_cache_this_op(struct nfsd4_op *op)
1217{
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001218 return OPDESC(op)->op_flags & OP_CACHEME;
J. Bruce Fields10910062011-01-24 12:11:02 -05001219}
1220
J. Bruce Fields68d93182011-04-08 17:00:50 -04001221static bool need_wrongsec_check(struct svc_rqst *rqstp)
1222{
1223 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1224 struct nfsd4_compoundargs *argp = rqstp->rq_argp;
1225 struct nfsd4_op *this = &argp->ops[resp->opcnt - 1];
1226 struct nfsd4_op *next = &argp->ops[resp->opcnt];
1227 struct nfsd4_operation *thisd;
1228 struct nfsd4_operation *nextd;
1229
1230 thisd = OPDESC(this);
1231 /*
1232 * Most ops check wronsec on our own; only the putfh-like ops
1233 * have special rules.
1234 */
1235 if (!(thisd->op_flags & OP_IS_PUTFH_LIKE))
1236 return false;
1237 /*
1238 * rfc 5661 2.6.3.1.1.6: don't bother erroring out a
1239 * put-filehandle operation if we're not going to use the
1240 * result:
1241 */
1242 if (argp->opcnt == resp->opcnt)
1243 return false;
1244
1245 nextd = OPDESC(next);
1246 /*
1247 * Rest of 2.6.3.1.1: certain operations will return WRONGSEC
1248 * errors themselves as necessary; others should check for them
1249 * now:
1250 */
1251 return !(nextd->op_flags & OP_HANDLES_WRONGSEC);
1252}
1253
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001254/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001255 * COMPOUND call.
1256 */
Al Viro7111c662006-10-19 23:28:45 -07001257static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -07001258nfsd4_proc_compound(struct svc_rqst *rqstp,
1259 struct nfsd4_compoundargs *args,
1260 struct nfsd4_compoundres *resp)
1261{
1262 struct nfsd4_op *op;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001263 struct nfsd4_operation *opdesc;
Andy Adamsone354d572009-03-28 11:30:52 +03001264 struct nfsd4_compound_state *cstate = &resp->cstate;
Kinglong Mee4daeed22014-03-26 17:10:37 +08001265 struct svc_fh *current_fh = &cstate->current_fh;
1266 struct svc_fh *save_fh = &cstate->save_fh;
J.Bruce Fieldse5710192006-12-13 00:35:20 -08001267 int slack_bytes;
Mi Jinlong58e7b332011-08-28 18:18:56 +08001268 u32 plen = 0;
Al Virob37ad282006-10-19 23:28:59 -07001269 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001270
Linus Torvalds1da177e2005-04-16 15:20:36 -07001271 resp->xbuf = &rqstp->rq_res;
Andy Adamsone354d572009-03-28 11:30:52 +03001272 resp->p = rqstp->rq_res.head[0].iov_base +
1273 rqstp->rq_res.head[0].iov_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001274 resp->tagp = resp->p;
1275 /* reserve space for: taglen, tag, and opcnt */
1276 resp->p += 2 + XDR_QUADLEN(args->taglen);
1277 resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
1278 resp->taglen = args->taglen;
1279 resp->tag = args->tag;
1280 resp->opcnt = 0;
1281 resp->rqstp = rqstp;
Kinglong Mee4daeed22014-03-26 17:10:37 +08001282 cstate->minorversion = args->minorversion;
1283 cstate->replay_owner = NULL;
1284 cstate->session = NULL;
1285 fh_init(current_fh, NFS4_FHSIZE);
1286 fh_init(save_fh, NFS4_FHSIZE);
NeilBrown8ff30fa2010-08-12 17:04:07 +10001287 /*
1288 * Don't use the deferral mechanism for NFSv4; compounds make it
1289 * too hard to avoid non-idempotency problems.
1290 */
1291 rqstp->rq_usedeferral = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001292
1293 /*
1294 * According to RFC3010, this takes precedence over all other errors.
1295 */
1296 status = nfserr_minor_vers_mismatch;
J. Bruce Fields35f7a142013-07-08 19:51:44 -04001297 if (nfsd_minorversion(args->minorversion, NFSD_TEST) <= 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001298 goto out;
1299
J. Bruce Fields57716352010-04-21 12:27:19 -04001300 status = nfs41_check_op_ordering(args);
1301 if (status) {
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001302 op = &args->ops[0];
J. Bruce Fields57716352010-04-21 12:27:19 -04001303 op->status = status;
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001304 goto encode_op;
1305 }
1306
Linus Torvalds1da177e2005-04-16 15:20:36 -07001307 while (!status && resp->opcnt < args->opcnt) {
1308 op = &args->ops[resp->opcnt++];
1309
Benny Halevyb001a1b2008-07-02 11:15:03 +03001310 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
1311 resp->opcnt, args->opcnt, op->opnum,
1312 nfsd4_op_name(op->opnum));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001313 /*
1314 * The XDR decode routines may have pre-set op->status;
1315 * for example, if there is a miscellaneous XDR error
1316 * it will be set to nfserr_bad_xdr.
1317 */
J. Bruce Fields9d313b12013-02-28 12:51:49 -08001318 if (op->status) {
1319 if (op->opnum == OP_OPEN)
1320 op->status = nfsd4_open_omfg(rqstp, cstate, op);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001321 goto encode_op;
J. Bruce Fields9d313b12013-02-28 12:51:49 -08001322 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001323
1324 /* We must be able to encode a successful response to
1325 * this operation, with enough room left over to encode a
1326 * failed response to the next operation. If we don't
1327 * have enough room, fail with ERR_RESOURCE.
1328 */
J.Bruce Fieldse5710192006-12-13 00:35:20 -08001329 slack_bytes = (char *)resp->end - (char *)resp->p;
1330 if (slack_bytes < COMPOUND_SLACK_SPACE
1331 + COMPOUND_ERR_SLACK_SPACE) {
1332 BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001333 op->status = nfserr_resource;
1334 goto encode_op;
1335 }
1336
J. Bruce Fields22b03212011-04-09 11:23:24 -04001337 opdesc = OPDESC(op);
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001338
Kinglong Mee4daeed22014-03-26 17:10:37 +08001339 if (!current_fh->fh_dentry) {
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001340 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -07001341 op->status = nfserr_nofilehandle;
1342 goto encode_op;
1343 }
Kinglong Mee4daeed22014-03-26 17:10:37 +08001344 } else if (current_fh->fh_export->ex_fslocs.migrated &&
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001345 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -07001346 op->status = nfserr_moved;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001347 goto encode_op;
1348 }
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001349
Kinglong Mee23367452014-03-29 10:23:47 +08001350 fh_clear_wcc(current_fh);
1351
Mi Jinlong58e7b332011-08-28 18:18:56 +08001352 /* If op is non-idempotent */
1353 if (opdesc->op_flags & OP_MODIFIES_SOMETHING) {
1354 plen = opdesc->op_rsize_bop(rqstp, op);
J. Bruce Fields4c69d582014-01-28 16:01:04 -05001355 /*
1356 * If there's still another operation, make sure
1357 * we'll have space to at least encode an error:
1358 */
1359 if (resp->opcnt < args->opcnt)
1360 plen += COMPOUND_ERR_SLACK_SPACE;
Mi Jinlong58e7b332011-08-28 18:18:56 +08001361 op->status = nfsd4_check_resp_size(resp, plen);
1362 }
1363
1364 if (op->status)
1365 goto encode_op;
1366
J. Bruce Fieldsb600de72013-02-28 11:55:46 -08001367 if (opdesc->op_get_currentstateid)
1368 opdesc->op_get_currentstateid(cstate, &op->u);
1369 op->status = opdesc->op_func(rqstp, cstate, &op->u);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001370
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001371 if (!op->status) {
1372 if (opdesc->op_set_currentstateid)
1373 opdesc->op_set_currentstateid(cstate, &op->u);
1374
1375 if (opdesc->op_flags & OP_CLEAR_STATEID)
Tigran Mkrtchyan37c593c2012-02-13 22:55:32 +01001376 clear_current_stateid(cstate);
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001377
1378 if (need_wrongsec_check(rqstp))
Kinglong Mee4daeed22014-03-26 17:10:37 +08001379 op->status = check_nfsd_access(current_fh->fh_export, rqstp);
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001380 }
J. Bruce Fields68d93182011-04-08 17:00:50 -04001381
Linus Torvalds1da177e2005-04-16 15:20:36 -07001382encode_op:
Andy Adamson49557cc2009-07-23 19:02:16 -04001383 /* Only from SEQUENCE */
Kinglong Mee4daeed22014-03-26 17:10:37 +08001384 if (cstate->status == nfserr_replay_cache) {
Andy Adamsonda3846a2009-04-03 08:28:22 +03001385 dprintk("%s NFS4.1 replay from cache\n", __func__);
Andy Adamsonabfabf82009-07-23 19:02:18 -04001386 status = op->status;
Andy Adamsonda3846a2009-04-03 08:28:22 +03001387 goto out;
1388 }
Al Viroa90b0612006-10-19 23:29:03 -07001389 if (op->status == nfserr_replay_me) {
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001390 op->replay = &cstate->replay_owner->so_replay;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001391 nfsd4_encode_replay(resp, op);
1392 status = op->status = op->replay->rp_status;
1393 } else {
1394 nfsd4_encode_operation(resp, op);
1395 status = op->status;
1396 }
Benny Halevy04077172008-12-15 19:40:49 +02001397
1398 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
1399 args->ops, args->opcnt, resp->opcnt, op->opnum,
1400 be32_to_cpu(status));
1401
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001402 if (cstate->replay_owner) {
J. Bruce Fields5ec094c2011-08-30 17:02:48 -04001403 nfs4_unlock_state();
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001404 cstate->replay_owner = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001405 }
NeilBrown7e06b7f2005-06-23 22:03:13 -07001406 /* XXX Ugh, we need to get rid of this kind of special case: */
1407 if (op->opnum == OP_READ && op->u.read.rd_filp)
1408 fput(op->u.read.rd_filp);
Shankar Anande2b20952006-07-10 04:45:44 -07001409
1410 nfsd4_increment_op_stats(op->opnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001411 }
1412
Kinglong Mee4daeed22014-03-26 17:10:37 +08001413 cstate->status = status;
1414 fh_put(current_fh);
1415 fh_put(save_fh);
1416 BUG_ON(cstate->replay_owner);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001417out:
Andy Adamson2f425872009-04-03 08:27:32 +03001418 /* Reset deferral mechanism for RPC deferrals */
1419 rqstp->rq_usedeferral = 1;
J. Bruce Fields3b12cd92008-05-05 17:17:44 -04001420 dprintk("nfsv4 compound returned %d\n", ntohl(status));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001421 return status;
1422}
1423
Mi Jinlong58e7b332011-08-28 18:18:56 +08001424#define op_encode_hdr_size (2)
1425#define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
1426#define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
1427#define op_encode_change_info_maxsz (5)
1428#define nfs4_fattr_bitmap_maxsz (4)
1429
1430#define op_encode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1431#define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz)
1432
1433#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1434
1435#define op_encode_ace_maxsz (3 + nfs4_owner_maxsz)
1436#define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \
1437 op_encode_ace_maxsz)
1438
1439#define op_encode_channel_attrs_maxsz (6 + 1 + 1)
1440
1441static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1442{
1443 return (op_encode_hdr_size) * sizeof(__be32);
1444}
1445
1446static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1447{
1448 return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32);
1449}
1450
1451static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1452{
1453 return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
1454}
1455
1456static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1457{
1458 return (op_encode_hdr_size + op_encode_change_info_maxsz
1459 + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1460}
1461
1462static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1463{
1464 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1465 * sizeof(__be32);
1466}
1467
1468static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1469{
1470 return (op_encode_hdr_size + op_encode_lock_denied_maxsz)
1471 * sizeof(__be32);
1472}
1473
1474static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1475{
1476 return (op_encode_hdr_size + op_encode_stateid_maxsz
1477 + op_encode_change_info_maxsz + 1
1478 + nfs4_fattr_bitmap_maxsz
1479 + op_encode_delegation_maxsz) * sizeof(__be32);
1480}
1481
1482static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1483{
1484 u32 maxcount = 0, rlen = 0;
1485
1486 maxcount = svc_max_payload(rqstp);
1487 rlen = op->u.read.rd_length;
1488
1489 if (rlen > maxcount)
1490 rlen = maxcount;
1491
J. Bruce Fields622f5602014-05-16 14:38:20 -04001492 return (op_encode_hdr_size + 2 + XDR_QUADLEN(rlen)) * sizeof(__be32);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001493}
1494
1495static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1496{
1497 u32 rlen = op->u.readdir.rd_maxcount;
1498
1499 if (rlen > PAGE_SIZE)
1500 rlen = PAGE_SIZE;
1501
1502 return (op_encode_hdr_size + op_encode_verifier_maxsz)
1503 * sizeof(__be32) + rlen;
1504}
1505
1506static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1507{
1508 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1509 * sizeof(__be32);
1510}
1511
1512static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1513{
1514 return (op_encode_hdr_size + op_encode_change_info_maxsz
1515 + op_encode_change_info_maxsz) * sizeof(__be32);
1516}
1517
1518static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1519{
1520 return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1521}
1522
1523static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1524{
J. Bruce Fields480efae2014-03-10 14:17:55 -04001525 return (op_encode_hdr_size + 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE)) *
1526 sizeof(__be32);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001527}
1528
1529static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1530{
J. Bruce Fieldsf34e4322014-05-16 21:24:56 -04001531 return (op_encode_hdr_size + 2 + op_encode_verifier_maxsz) * sizeof(__be32);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001532}
1533
1534static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1535{
1536 return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\
Kinglong Meea8bb84b2013-12-10 15:24:36 +08001537 1 + 1 + /* eir_flags, spr_how */\
1538 4 + /* spo_must_enforce & _allow with bitmap */\
Mi Jinlong58e7b332011-08-28 18:18:56 +08001539 2 + /*eir_server_owner.so_minor_id */\
1540 /* eir_server_owner.so_major_id<> */\
1541 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1542 /* eir_server_scope<> */\
1543 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1544 1 + /* eir_server_impl_id array length */\
1545 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32);
1546}
1547
1548static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1549{
1550 return (op_encode_hdr_size + \
1551 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\
1552 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32);
1553}
1554
1555static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1556{
1557 return (op_encode_hdr_size + \
1558 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\
1559 2 + /* csr_sequence, csr_flags */\
1560 op_encode_channel_attrs_maxsz + \
1561 op_encode_channel_attrs_maxsz) * sizeof(__be32);
1562}
1563
Benny Halevy20766012009-03-28 11:32:05 +03001564static struct nfsd4_operation nfsd4_ops[] = {
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001565 [OP_ACCESS] = {
1566 .op_func = (nfsd4op_func)nfsd4_access,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001567 .op_name = "OP_ACCESS",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001568 },
1569 [OP_CLOSE] = {
1570 .op_func = (nfsd4op_func)nfsd4_close,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001571 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001572 .op_name = "OP_CLOSE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001573 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001574 .op_get_currentstateid = (stateid_getter)nfsd4_get_closestateid,
1575 .op_set_currentstateid = (stateid_setter)nfsd4_set_closestateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001576 },
1577 [OP_COMMIT] = {
1578 .op_func = (nfsd4op_func)nfsd4_commit,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001579 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001580 .op_name = "OP_COMMIT",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001581 .op_rsize_bop = (nfsd4op_rsize)nfsd4_commit_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001582 },
1583 [OP_CREATE] = {
1584 .op_func = (nfsd4op_func)nfsd4_create,
Tigran Mkrtchyand1471052012-02-13 22:55:29 +01001585 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001586 .op_name = "OP_CREATE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001587 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001588 },
1589 [OP_DELEGRETURN] = {
1590 .op_func = (nfsd4op_func)nfsd4_delegreturn,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001591 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001592 .op_name = "OP_DELEGRETURN",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001593 .op_rsize_bop = nfsd4_only_status_rsize,
Tigran Mkrtchyan9428fe12012-02-13 22:55:31 +01001594 .op_get_currentstateid = (stateid_getter)nfsd4_get_delegreturnstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001595 },
1596 [OP_GETATTR] = {
1597 .op_func = (nfsd4op_func)nfsd4_getattr,
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001598 .op_flags = ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001599 .op_name = "OP_GETATTR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001600 },
1601 [OP_GETFH] = {
1602 .op_func = (nfsd4op_func)nfsd4_getfh,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001603 .op_name = "OP_GETFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001604 },
1605 [OP_LINK] = {
1606 .op_func = (nfsd4op_func)nfsd4_link,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001607 .op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING
1608 | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001609 .op_name = "OP_LINK",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001610 .op_rsize_bop = (nfsd4op_rsize)nfsd4_link_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001611 },
1612 [OP_LOCK] = {
1613 .op_func = (nfsd4op_func)nfsd4_lock,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001614 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001615 .op_name = "OP_LOCK",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001616 .op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize,
Tigran Mkrtchyan62cd4a52012-02-13 22:55:25 +01001617 .op_set_currentstateid = (stateid_setter)nfsd4_set_lockstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001618 },
1619 [OP_LOCKT] = {
1620 .op_func = (nfsd4op_func)nfsd4_lockt,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001621 .op_name = "OP_LOCKT",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001622 },
1623 [OP_LOCKU] = {
1624 .op_func = (nfsd4op_func)nfsd4_locku,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001625 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001626 .op_name = "OP_LOCKU",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001627 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
Tigran Mkrtchyan62cd4a52012-02-13 22:55:25 +01001628 .op_get_currentstateid = (stateid_getter)nfsd4_get_lockustateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001629 },
1630 [OP_LOOKUP] = {
1631 .op_func = (nfsd4op_func)nfsd4_lookup,
Tigran Mkrtchyand1471052012-02-13 22:55:29 +01001632 .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001633 .op_name = "OP_LOOKUP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001634 },
1635 [OP_LOOKUPP] = {
1636 .op_func = (nfsd4op_func)nfsd4_lookupp,
Tigran Mkrtchyand1471052012-02-13 22:55:29 +01001637 .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001638 .op_name = "OP_LOOKUPP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001639 },
1640 [OP_NVERIFY] = {
1641 .op_func = (nfsd4op_func)nfsd4_nverify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001642 .op_name = "OP_NVERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001643 },
1644 [OP_OPEN] = {
1645 .op_func = (nfsd4op_func)nfsd4_open,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001646 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001647 .op_name = "OP_OPEN",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001648 .op_rsize_bop = (nfsd4op_rsize)nfsd4_open_rsize,
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001649 .op_set_currentstateid = (stateid_setter)nfsd4_set_openstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001650 },
1651 [OP_OPEN_CONFIRM] = {
1652 .op_func = (nfsd4op_func)nfsd4_open_confirm,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001653 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001654 .op_name = "OP_OPEN_CONFIRM",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001655 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001656 },
1657 [OP_OPEN_DOWNGRADE] = {
1658 .op_func = (nfsd4op_func)nfsd4_open_downgrade,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001659 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001660 .op_name = "OP_OPEN_DOWNGRADE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001661 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
Tigran Mkrtchyan9428fe12012-02-13 22:55:31 +01001662 .op_get_currentstateid = (stateid_getter)nfsd4_get_opendowngradestateid,
1663 .op_set_currentstateid = (stateid_setter)nfsd4_set_opendowngradestateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001664 },
1665 [OP_PUTFH] = {
1666 .op_func = (nfsd4op_func)nfsd4_putfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001667 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
J. Bruce Fields5b648692014-03-07 11:43:58 -05001668 | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001669 .op_name = "OP_PUTFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001670 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001671 },
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001672 [OP_PUTPUBFH] = {
J. Bruce Fieldsa1c8c4d2009-03-09 12:17:29 -04001673 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001674 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
J. Bruce Fields5b648692014-03-07 11:43:58 -05001675 | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001676 .op_name = "OP_PUTPUBFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001677 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001678 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001679 [OP_PUTROOTFH] = {
1680 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001681 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
J. Bruce Fields5b648692014-03-07 11:43:58 -05001682 | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001683 .op_name = "OP_PUTROOTFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001684 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001685 },
1686 [OP_READ] = {
1687 .op_func = (nfsd4op_func)nfsd4_read,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001688 .op_name = "OP_READ",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001689 .op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize,
Tigran Mkrtchyan30813e22012-02-13 22:55:26 +01001690 .op_get_currentstateid = (stateid_getter)nfsd4_get_readstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001691 },
1692 [OP_READDIR] = {
1693 .op_func = (nfsd4op_func)nfsd4_readdir,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001694 .op_name = "OP_READDIR",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001695 .op_rsize_bop = (nfsd4op_rsize)nfsd4_readdir_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001696 },
1697 [OP_READLINK] = {
1698 .op_func = (nfsd4op_func)nfsd4_readlink,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001699 .op_name = "OP_READLINK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001700 },
1701 [OP_REMOVE] = {
1702 .op_func = (nfsd4op_func)nfsd4_remove,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001703 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001704 .op_name = "OP_REMOVE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001705 .op_rsize_bop = (nfsd4op_rsize)nfsd4_remove_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001706 },
1707 [OP_RENAME] = {
1708 .op_func = (nfsd4op_func)nfsd4_rename,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001709 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001710 .op_name = "OP_RENAME",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001711 .op_rsize_bop = (nfsd4op_rsize)nfsd4_rename_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001712 },
1713 [OP_RENEW] = {
1714 .op_func = (nfsd4op_func)nfsd4_renew,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001715 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1716 | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001717 .op_name = "OP_RENEW",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001718 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1719
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001720 },
1721 [OP_RESTOREFH] = {
1722 .op_func = (nfsd4op_func)nfsd4_restorefh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001723 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
Mi Jinlong58e7b332011-08-28 18:18:56 +08001724 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001725 .op_name = "OP_RESTOREFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001726 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001727 },
1728 [OP_SAVEFH] = {
1729 .op_func = (nfsd4op_func)nfsd4_savefh,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001730 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001731 .op_name = "OP_SAVEFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001732 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001733 },
Andy Adamsondcb488a32007-07-17 04:04:51 -07001734 [OP_SECINFO] = {
1735 .op_func = (nfsd4op_func)nfsd4_secinfo,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001736 .op_flags = OP_HANDLES_WRONGSEC,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001737 .op_name = "OP_SECINFO",
Andy Adamsondcb488a32007-07-17 04:04:51 -07001738 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001739 [OP_SETATTR] = {
1740 .op_func = (nfsd4op_func)nfsd4_setattr,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001741 .op_name = "OP_SETATTR",
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001742 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001743 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setattr_rsize,
Tigran Mkrtchyan1e97b512012-02-13 22:55:30 +01001744 .op_get_currentstateid = (stateid_getter)nfsd4_get_setattrstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001745 },
1746 [OP_SETCLIENTID] = {
1747 .op_func = (nfsd4op_func)nfsd4_setclientid,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001748 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001749 | OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001750 .op_name = "OP_SETCLIENTID",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001751 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setclientid_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001752 },
1753 [OP_SETCLIENTID_CONFIRM] = {
1754 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001755 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001756 | OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001757 .op_name = "OP_SETCLIENTID_CONFIRM",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001758 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001759 },
1760 [OP_VERIFY] = {
1761 .op_func = (nfsd4op_func)nfsd4_verify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001762 .op_name = "OP_VERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001763 },
1764 [OP_WRITE] = {
1765 .op_func = (nfsd4op_func)nfsd4_write,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001766 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001767 .op_name = "OP_WRITE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001768 .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
Tigran Mkrtchyan30813e22012-02-13 22:55:26 +01001769 .op_get_currentstateid = (stateid_getter)nfsd4_get_writestateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001770 },
1771 [OP_RELEASE_LOCKOWNER] = {
1772 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001773 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1774 | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001775 .op_name = "OP_RELEASE_LOCKOWNER",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001776 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001777 },
Andy Adamson069b6ad2009-04-03 08:27:58 +03001778
1779 /* NFSv4.1 operations */
1780 [OP_EXCHANGE_ID] = {
1781 .op_func = (nfsd4op_func)nfsd4_exchange_id,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001782 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1783 | OP_MODIFIES_SOMETHING,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001784 .op_name = "OP_EXCHANGE_ID",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001785 .op_rsize_bop = (nfsd4op_rsize)nfsd4_exchange_id_rsize,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001786 },
J. Bruce Fieldscb73a9f2012-11-01 18:09:48 -04001787 [OP_BACKCHANNEL_CTL] = {
1788 .op_func = (nfsd4op_func)nfsd4_backchannel_ctl,
1789 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
1790 .op_name = "OP_BACKCHANNEL_CTL",
1791 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1792 },
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001793 [OP_BIND_CONN_TO_SESSION] = {
1794 .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001795 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1796 | OP_MODIFIES_SOMETHING,
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001797 .op_name = "OP_BIND_CONN_TO_SESSION",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001798 .op_rsize_bop = (nfsd4op_rsize)nfsd4_bind_conn_to_session_rsize,
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001799 },
Andy Adamson069b6ad2009-04-03 08:27:58 +03001800 [OP_CREATE_SESSION] = {
1801 .op_func = (nfsd4op_func)nfsd4_create_session,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001802 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1803 | OP_MODIFIES_SOMETHING,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001804 .op_name = "OP_CREATE_SESSION",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001805 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_session_rsize,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001806 },
1807 [OP_DESTROY_SESSION] = {
1808 .op_func = (nfsd4op_func)nfsd4_destroy_session,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001809 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1810 | OP_MODIFIES_SOMETHING,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001811 .op_name = "OP_DESTROY_SESSION",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001812 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001813 },
1814 [OP_SEQUENCE] = {
1815 .op_func = (nfsd4op_func)nfsd4_sequence,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001816 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001817 .op_name = "OP_SEQUENCE",
1818 },
Benny Halevy094b5d72011-06-16 11:39:10 -04001819 [OP_DESTROY_CLIENTID] = {
Mi Jinlong345c2842011-10-20 17:51:39 +08001820 .op_func = (nfsd4op_func)nfsd4_destroy_clientid,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001821 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1822 | OP_MODIFIES_SOMETHING,
Benny Halevy094b5d72011-06-16 11:39:10 -04001823 .op_name = "OP_DESTROY_CLIENTID",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001824 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
Benny Halevy094b5d72011-06-16 11:39:10 -04001825 },
J. Bruce Fields4dc6ec02010-04-19 15:11:28 -04001826 [OP_RECLAIM_COMPLETE] = {
1827 .op_func = (nfsd4op_func)nfsd4_reclaim_complete,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001828 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
J. Bruce Fields4dc6ec02010-04-19 15:11:28 -04001829 .op_name = "OP_RECLAIM_COMPLETE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001830 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J. Bruce Fields4dc6ec02010-04-19 15:11:28 -04001831 },
J. Bruce Fields04f4ad12010-12-16 09:51:13 -05001832 [OP_SECINFO_NO_NAME] = {
1833 .op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001834 .op_flags = OP_HANDLES_WRONGSEC,
J. Bruce Fields04f4ad12010-12-16 09:51:13 -05001835 .op_name = "OP_SECINFO_NO_NAME",
1836 },
Bryan Schumaker17456802011-07-13 10:50:48 -04001837 [OP_TEST_STATEID] = {
1838 .op_func = (nfsd4op_func)nfsd4_test_stateid,
1839 .op_flags = ALLOWED_WITHOUT_FH,
1840 .op_name = "OP_TEST_STATEID",
1841 },
Bryan Schumakere1ca12d2011-07-13 11:04:21 -04001842 [OP_FREE_STATEID] = {
1843 .op_func = (nfsd4op_func)nfsd4_free_stateid,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001844 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
Bryan Schumakere1ca12d2011-07-13 11:04:21 -04001845 .op_name = "OP_FREE_STATEID",
J. Bruce Fieldsa1dc6952012-12-17 18:17:13 -05001846 .op_get_currentstateid = (stateid_getter)nfsd4_get_freestateid,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001847 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
Bryan Schumakere1ca12d2011-07-13 11:04:21 -04001848 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001849};
1850
Trond Myklebust8f199b82012-03-20 15:11:17 -04001851#ifdef NFSD_DEBUG
Adrian Bunkf1c7f792008-08-08 19:26:42 +03001852static const char *nfsd4_op_name(unsigned opnum)
Benny Halevyb001a1b2008-07-02 11:15:03 +03001853{
1854 if (opnum < ARRAY_SIZE(nfsd4_ops))
1855 return nfsd4_ops[opnum].op_name;
1856 return "unknown_operation";
1857}
Trond Myklebust8f199b82012-03-20 15:11:17 -04001858#endif
Benny Halevyb001a1b2008-07-02 11:15:03 +03001859
Linus Torvalds1da177e2005-04-16 15:20:36 -07001860#define nfsd4_voidres nfsd4_voidargs
Linus Torvalds1da177e2005-04-16 15:20:36 -07001861struct nfsd4_voidargs { int dummy; };
1862
Linus Torvalds1da177e2005-04-16 15:20:36 -07001863static struct svc_procedure nfsd_procedures4[2] = {
Yu Zhiguo0a93a472009-05-19 14:09:54 +08001864 [NFSPROC4_NULL] = {
1865 .pc_func = (svc_procfunc) nfsd4_proc_null,
1866 .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
1867 .pc_argsize = sizeof(struct nfsd4_voidargs),
1868 .pc_ressize = sizeof(struct nfsd4_voidres),
1869 .pc_cachetype = RC_NOCACHE,
1870 .pc_xdrressize = 1,
1871 },
1872 [NFSPROC4_COMPOUND] = {
1873 .pc_func = (svc_procfunc) nfsd4_proc_compound,
1874 .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
1875 .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
1876 .pc_argsize = sizeof(struct nfsd4_compoundargs),
1877 .pc_ressize = sizeof(struct nfsd4_compoundres),
J. Bruce Fields3e98abf2011-07-16 17:15:10 -04001878 .pc_release = nfsd4_release_compoundargs,
Yu Zhiguo0a93a472009-05-19 14:09:54 +08001879 .pc_cachetype = RC_NOCACHE,
1880 .pc_xdrressize = NFSD_BUFSIZE/4,
1881 },
Linus Torvalds1da177e2005-04-16 15:20:36 -07001882};
1883
1884struct svc_version nfsd_version4 = {
1885 .vs_vers = 4,
1886 .vs_nproc = 2,
1887 .vs_proc = nfsd_procedures4,
1888 .vs_dispatch = nfsd_dispatch,
1889 .vs_xdrsize = NFS4_SVC_XDRSIZE,
Kinglong Mee7e55b592013-12-31 13:17:20 +08001890 .vs_rpcb_optnl = 1,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001891};
1892
1893/*
1894 * Local variables:
1895 * c-basic-offset: 8
1896 * End:
1897 */