blob: 9bf0a66251877e8cdd8cf3d0d556fbcf0630598a [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
Boaz Harrosh9a74af22009-12-03 20:30:56 +020038#include "cache.h"
39#include "xdr4.h"
J. Bruce Fields0a3adad2009-11-04 18:12:35 -050040#include "vfs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070041
42#define NFSDDBG_FACILITY NFSDDBG_PROC
43
Yu Zhiguo3c8e0312009-05-16 16:22:31 +080044static u32 nfsd_attrmask[] = {
45 NFSD_WRITEABLE_ATTRS_WORD0,
46 NFSD_WRITEABLE_ATTRS_WORD1,
47 NFSD_WRITEABLE_ATTRS_WORD2
48};
49
50static u32 nfsd41_ex_attrmask[] = {
51 NFSD_SUPPATTR_EXCLCREAT_WORD0,
52 NFSD_SUPPATTR_EXCLCREAT_WORD1,
53 NFSD_SUPPATTR_EXCLCREAT_WORD2
54};
55
56static __be32
57check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
58 u32 *bmval, u32 *writable)
59{
60 struct dentry *dentry = cstate->current_fh.fh_dentry;
Yu Zhiguo3c8e0312009-05-16 16:22:31 +080061
62 /*
63 * Check about attributes are supported by the NFSv4 server or not.
64 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP.
65 */
66 if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) ||
67 (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) ||
68 (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
69 return nfserr_attrnotsupp;
70
71 /*
Trond Myklebusta06b1262009-08-31 15:16:11 -040072 * Check FATTR4_WORD0_ACL can be supported
Yu Zhiguo3c8e0312009-05-16 16:22:31 +080073 * in current environment or not.
74 */
75 if (bmval[0] & FATTR4_WORD0_ACL) {
76 if (!IS_POSIXACL(dentry->d_inode))
77 return nfserr_attrnotsupp;
78 }
Yu Zhiguo3c8e0312009-05-16 16:22:31 +080079
80 /*
81 * According to spec, read-only attributes return ERR_INVAL.
82 */
83 if (writable) {
84 if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
85 (bmval[2] & ~writable[2]))
86 return nfserr_inval;
87 }
88
89 return nfs_ok;
90}
91
92static __be32
93nfsd4_check_open_attributes(struct svc_rqst *rqstp,
94 struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
95{
96 __be32 status = nfs_ok;
97
98 if (open->op_create == NFS4_OPEN_CREATE) {
99 if (open->op_createmode == NFS4_CREATE_UNCHECKED
100 || open->op_createmode == NFS4_CREATE_GUARDED)
101 status = check_attr_support(rqstp, cstate,
102 open->op_bmval, nfsd_attrmask);
103 else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1)
104 status = check_attr_support(rqstp, cstate,
105 open->op_bmval, nfsd41_ex_attrmask);
106 }
107
108 return status;
109}
110
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800111static int
112is_create_with_attrs(struct nfsd4_open *open)
113{
114 return open->op_create == NFS4_OPEN_CREATE
115 && (open->op_createmode == NFS4_CREATE_UNCHECKED
116 || open->op_createmode == NFS4_CREATE_GUARDED
117 || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1);
118}
119
120/*
121 * if error occurs when setting the acl, just clear the acl bit
122 * in the returned attr bitmap.
123 */
124static void
125do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
126 struct nfs4_acl *acl, u32 *bmval)
127{
128 __be32 status;
129
130 status = nfsd4_set_nfs4_acl(rqstp, fhp, acl);
131 if (status)
132 /*
133 * We should probably fail the whole open at this point,
134 * but we've already created the file, so it's too late;
135 * So this seems the least of evils:
136 */
137 bmval[0] &= ~FATTR4_WORD0_ACL;
138}
139
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140static inline void
141fh_dup2(struct svc_fh *dst, struct svc_fh *src)
142{
143 fh_put(dst);
144 dget(src->fh_dentry);
145 if (src->fh_export)
146 cache_get(&src->fh_export->h);
147 *dst = *src;
148}
149
Al Virob37ad282006-10-19 23:28:59 -0700150static __be32
J. Bruce Fieldsdc730e12006-10-17 00:10:13 -0700151do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152{
Al Virob37ad282006-10-19 23:28:59 -0700153 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154
155 if (open->op_truncate &&
156 !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
157 return nfserr_inval;
158
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159 if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200160 accmode |= NFSD_MAY_READ;
J. Bruce Fields9801d8a2006-10-17 00:10:14 -0700161 if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200162 accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC);
J. Bruce Fields57ecb342009-12-01 19:42:57 -0500163 if (open->op_share_deny & NFS4_SHARE_DENY_READ)
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200164 accmode |= NFSD_MAY_WRITE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165
166 status = fh_verify(rqstp, current_fh, S_IFREG, accmode);
167
168 return status;
169}
170
Al Virob37ad282006-10-19 23:28:59 -0700171static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
173{
174 struct svc_fh resfh;
Al Virob37ad282006-10-19 23:28:59 -0700175 __be32 status;
J. Bruce Fields81ac95c2006-11-08 17:44:40 -0800176 int created = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177
178 fh_init(&resfh, NFS4_FHSIZE);
179 open->op_truncate = 0;
180
181 if (open->op_create) {
Benny Halevy79fb54a2009-04-03 08:29:17 +0300182 /* FIXME: check session persistence and pnfs flags.
183 * The nfsv4.1 spec requires the following semantics:
184 *
185 * Persistent | pNFS | Server REQUIRED | Client Allowed
186 * Reply Cache | server | |
187 * -------------+--------+-----------------+--------------------
188 * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
189 * | | | (SHOULD)
190 * | | and EXCLUSIVE4 | or EXCLUSIVE4
191 * | | | (SHOULD NOT)
192 * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
193 * yes | no | GUARDED4 | GUARDED4
194 * yes | yes | GUARDED4 | GUARDED4
195 */
196
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 /*
198 * Note: create modes (UNCHECKED,GUARDED...) are the same
Mi Jinlongac6721a2011-04-20 17:06:25 +0800199 * in NFSv4 as in v3 except EXCLUSIVE4_1.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200 */
Mi Jinlongac6721a2011-04-20 17:06:25 +0800201 status = do_nfsd_create(rqstp, current_fh, open->op_fname.data,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202 open->op_fname.len, &open->op_iattr,
203 &resfh, open->op_createmode,
Jeff Layton749997e2007-07-31 00:37:51 -0700204 (u32 *)open->op_verf.data,
205 &open->op_truncate, &created);
206
J. Bruce Fields99f88722009-02-02 15:12:27 -0500207 /*
208 * Following rfc 3530 14.2.16, use the returned bitmask
209 * to indicate which attributes we used to store the
210 * verifier:
Jeff Layton749997e2007-07-31 00:37:51 -0700211 */
212 if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0)
J. Bruce Fields99f88722009-02-02 15:12:27 -0500213 open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS |
Jeff Layton749997e2007-07-31 00:37:51 -0700214 FATTR4_WORD1_TIME_MODIFY);
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800215 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 status = nfsd_lookup(rqstp, current_fh,
217 open->op_fname.data, open->op_fname.len, &resfh);
218 fh_unlock(current_fh);
219 }
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800220 if (status)
221 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800223 if (is_create_with_attrs(open) && open->op_acl != NULL)
224 do_set_nfs4_acl(rqstp, &resfh, open->op_acl, open->op_bmval);
225
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800226 set_change_info(&open->op_cinfo, current_fh);
J. Bruce Fields13024b72009-02-02 17:04:03 -0500227 fh_dup2(current_fh, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800229 /* set reply cache */
J. Bruce Fieldsa4773c082009-02-02 17:23:10 -0500230 fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
231 &resfh.fh_handle);
J. Bruce Fields81ac95c2006-11-08 17:44:40 -0800232 if (!created)
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200233 status = do_open_permission(rqstp, current_fh, open,
234 NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800236out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237 fh_put(&resfh);
238 return status;
239}
240
Al Virob37ad282006-10-19 23:28:59 -0700241static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
243{
Al Virob37ad282006-10-19 23:28:59 -0700244 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245
246 /* Only reclaims from previously confirmed clients are valid */
247 if ((status = nfs4_check_open_reclaim(&open->op_clientid)))
248 return status;
249
250 /* We don't know the target directory, and therefore can not
251 * set the change info
252 */
253
254 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
255
256 /* set replay cache */
J. Bruce Fieldsa4773c082009-02-02 17:23:10 -0500257 fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
258 &current_fh->fh_handle);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259
260 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
261 (open->op_iattr.ia_size == 0);
262
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200263 status = do_open_permission(rqstp, current_fh, open,
264 NFSD_MAY_OWNER_OVERRIDE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265
266 return status;
267}
268
Andy Adamson60adfc52009-04-03 08:28:50 +0300269static void
270copy_clientid(clientid_t *clid, struct nfsd4_session *session)
271{
272 struct nfsd4_sessionid *sid =
273 (struct nfsd4_sessionid *)session->se_sessionid.data;
274
275 clid->cl_boot = sid->clientid.cl_boot;
276 clid->cl_id = sid->clientid.cl_id;
277}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278
J.Bruce Fields71911552006-12-13 00:35:29 -0800279static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800280nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -0800281 struct nfsd4_open *open)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282{
Al Virob37ad282006-10-19 23:28:59 -0700283 __be32 status;
Andy Adamson66689582009-04-03 08:28:45 +0300284 struct nfsd4_compoundres *resp;
285
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n",
287 (int)open->op_fname.len, open->op_fname.data,
288 open->op_stateowner);
289
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290 /* This check required by spec. */
291 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
292 return nfserr_inval;
293
Mi Jinlongab1350b2011-07-14 15:06:26 +0800294 /*
295 * RFC5661 18.51.3
296 * Before RECLAIM_COMPLETE done, server should deny new lock
297 */
298 if (nfsd4_has_session(cstate) &&
299 !cstate->session->se_client->cl_firststate &&
300 open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
301 return nfserr_grace;
302
Andy Adamson60adfc52009-04-03 08:28:50 +0300303 if (nfsd4_has_session(cstate))
304 copy_clientid(&open->op_clientid, cstate->session);
305
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306 nfs4_lock_state();
307
308 /* check seqid for replay. set nfs4_owner */
Andy Adamson66689582009-04-03 08:28:45 +0300309 resp = rqstp->rq_resp;
310 status = nfsd4_process_open1(&resp->cstate, open);
Al Viroa90b0612006-10-19 23:29:03 -0700311 if (status == nfserr_replay_me) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312 struct nfs4_replay *rp = &open->op_stateowner->so_replay;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800313 fh_put(&cstate->current_fh);
J. Bruce Fieldsa4773c082009-02-02 17:23:10 -0500314 fh_copy_shallow(&cstate->current_fh.fh_handle,
315 &rp->rp_openfh);
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200316 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317 if (status)
318 dprintk("nfsd4_open: replay failed"
319 " restoring previous filehandle\n");
320 else
Al Viroa90b0612006-10-19 23:29:03 -0700321 status = nfserr_replay_me;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322 }
323 if (status)
324 goto out;
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800325
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800326 status = nfsd4_check_open_attributes(rqstp, cstate, open);
327 if (status)
328 goto out;
329
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800330 /* Openowner is now set, so sequence id will get bumped. Now we need
331 * these checks before we do any creates: */
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800332 status = nfserr_grace;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400333 if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800334 goto out;
335 status = nfserr_no_grace;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400336 if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800337 goto out;
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800338
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339 switch (open->op_claim_type) {
NeilBrown0dd3c192005-06-23 22:02:56 -0700340 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341 case NFS4_OPEN_CLAIM_NULL:
342 /*
343 * (1) set CURRENT_FH to the file being opened,
344 * creating it if necessary, (2) set open->op_cinfo,
345 * (3) set open->op_truncate if the file is to be
346 * truncated after opening, (4) do permission checking.
347 */
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800348 status = do_open_lookup(rqstp, &cstate->current_fh,
349 open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 if (status)
351 goto out;
352 break;
353 case NFS4_OPEN_CLAIM_PREVIOUS:
J. Bruce Fieldsa5258252006-01-18 17:43:30 -0800354 open->op_stateowner->so_confirmed = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355 /*
356 * The CURRENT_FH is already set to the file being
357 * opened. (1) set open->op_cinfo, (2) set
358 * open->op_truncate if the file is to be truncated
359 * after opening, (3) do permission checking.
360 */
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800361 status = do_open_fhandle(rqstp, &cstate->current_fh,
362 open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 if (status)
364 goto out;
365 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
J. Bruce Fieldsa5258252006-01-18 17:43:30 -0800367 open->op_stateowner->so_confirmed = 1;
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400368 dprintk("NFSD: unsupported OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369 open->op_claim_type);
370 status = nfserr_notsupp;
371 goto out;
372 default:
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400373 dprintk("NFSD: Invalid OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374 open->op_claim_type);
375 status = nfserr_inval;
376 goto out;
377 }
378 /*
379 * nfsd4_process_open2() does the actual opening of the file. If
380 * successful, it (1) truncates the file if open->op_truncate was
381 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
382 */
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800383 status = nfsd4_process_open2(rqstp, &cstate->current_fh, open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384out:
Neil Brownf2327d92005-09-13 01:25:37 -0700385 if (open->op_stateowner) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386 nfs4_get_stateowner(open->op_stateowner);
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -0800387 cstate->replay_owner = open->op_stateowner;
Neil Brownf2327d92005-09-13 01:25:37 -0700388 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 nfs4_unlock_state();
390 return status;
391}
392
393/*
394 * filehandle-manipulating ops.
395 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800396static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800397nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
398 struct svc_fh **getfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800400 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401 return nfserr_nofilehandle;
402
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800403 *getfh = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 return nfs_ok;
405}
406
J.Bruce Fields71911552006-12-13 00:35:29 -0800407static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800408nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
409 struct nfsd4_putfh *putfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800411 fh_put(&cstate->current_fh);
412 cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
413 memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
414 putfh->pf_fhlen);
J. Bruce Fields68d93182011-04-08 17:00:50 -0400415 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416}
417
J.Bruce Fields71911552006-12-13 00:35:29 -0800418static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800419nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
420 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421{
Al Virob37ad282006-10-19 23:28:59 -0700422 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800424 fh_put(&cstate->current_fh);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700425 status = exp_pseudoroot(rqstp, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426 return status;
427}
428
J.Bruce Fields71911552006-12-13 00:35:29 -0800429static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800430nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
431 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800433 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434 return nfserr_restorefh;
435
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800436 fh_dup2(&cstate->current_fh, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 return nfs_ok;
438}
439
J.Bruce Fields71911552006-12-13 00:35:29 -0800440static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800441nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
442 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800444 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445 return nfserr_nofilehandle;
446
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800447 fh_dup2(&cstate->save_fh, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448 return nfs_ok;
449}
450
451/*
452 * misc nfsv4 ops
453 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800454static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800455nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
456 struct nfsd4_access *access)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457{
458 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
459 return nfserr_inval;
460
461 access->ac_resp_access = access->ac_req_access;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800462 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
463 &access->ac_supported);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464}
465
J.Bruce Fields71911552006-12-13 00:35:29 -0800466static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800467nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
468 struct nfsd4_commit *commit)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469{
Al Virob37ad282006-10-19 23:28:59 -0700470 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471
472 u32 *p = (u32 *)commit->co_verf.data;
473 *p++ = nfssvc_boot.tv_sec;
474 *p++ = nfssvc_boot.tv_usec;
475
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800476 status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
477 commit->co_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478 if (status == nfserr_symlink)
479 status = nfserr_inval;
480 return status;
481}
482
Al Virob37ad282006-10-19 23:28:59 -0700483static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800484nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
485 struct nfsd4_create *create)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486{
487 struct svc_fh resfh;
Al Virob37ad282006-10-19 23:28:59 -0700488 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489 dev_t rdev;
490
491 fh_init(&resfh, NFS4_FHSIZE);
492
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200493 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
494 NFSD_MAY_CREATE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495 if (status == nfserr_symlink)
496 status = nfserr_notdir;
497 if (status)
498 return status;
499
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800500 status = check_attr_support(rqstp, cstate, create->cr_bmval,
501 nfsd_attrmask);
502 if (status)
503 return status;
504
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505 switch (create->cr_type) {
506 case NF4LNK:
507 /* ugh! we have to null-terminate the linktext, or
508 * vfs_symlink() will choke. it is always safe to
509 * null-terminate by brute force, since at worst we
510 * will overwrite the first byte of the create namelen
511 * in the XDR buffer, which has already been extracted
512 * during XDR decode.
513 */
514 create->cr_linkname[create->cr_linklen] = 0;
515
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800516 status = nfsd_symlink(rqstp, &cstate->current_fh,
517 create->cr_name, create->cr_namelen,
518 create->cr_linkname, create->cr_linklen,
519 &resfh, &create->cr_iattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520 break;
521
522 case NF4BLK:
523 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
524 if (MAJOR(rdev) != create->cr_specdata1 ||
525 MINOR(rdev) != create->cr_specdata2)
526 return nfserr_inval;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800527 status = nfsd_create(rqstp, &cstate->current_fh,
528 create->cr_name, create->cr_namelen,
529 &create->cr_iattr, S_IFBLK, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530 break;
531
532 case NF4CHR:
533 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
534 if (MAJOR(rdev) != create->cr_specdata1 ||
535 MINOR(rdev) != create->cr_specdata2)
536 return nfserr_inval;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800537 status = nfsd_create(rqstp, &cstate->current_fh,
538 create->cr_name, create->cr_namelen,
539 &create->cr_iattr,S_IFCHR, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540 break;
541
542 case NF4SOCK:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800543 status = nfsd_create(rqstp, &cstate->current_fh,
544 create->cr_name, create->cr_namelen,
545 &create->cr_iattr, S_IFSOCK, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546 break;
547
548 case NF4FIFO:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800549 status = nfsd_create(rqstp, &cstate->current_fh,
550 create->cr_name, create->cr_namelen,
551 &create->cr_iattr, S_IFIFO, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552 break;
553
554 case NF4DIR:
555 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800556 status = nfsd_create(rqstp, &cstate->current_fh,
557 create->cr_name, create->cr_namelen,
558 &create->cr_iattr, S_IFDIR, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559 break;
560
561 default:
562 status = nfserr_badtype;
563 }
564
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800565 if (status)
566 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800568 if (create->cr_acl != NULL)
569 do_set_nfs4_acl(rqstp, &resfh, create->cr_acl,
570 create->cr_bmval);
571
572 fh_unlock(&cstate->current_fh);
573 set_change_info(&create->cr_cinfo, &cstate->current_fh);
574 fh_dup2(&cstate->current_fh, &resfh);
575out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576 fh_put(&resfh);
577 return status;
578}
579
J.Bruce Fields71911552006-12-13 00:35:29 -0800580static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800581nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
582 struct nfsd4_getattr *getattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583{
Al Virob37ad282006-10-19 23:28:59 -0700584 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200586 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587 if (status)
588 return status;
589
590 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
591 return nfserr_inval;
592
Andy Adamson7e705702009-04-03 08:29:11 +0300593 getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
594 getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
595 getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800597 getattr->ga_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598 return nfs_ok;
599}
600
J.Bruce Fields71911552006-12-13 00:35:29 -0800601static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800602nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
603 struct nfsd4_link *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700604{
Al Virob37ad282006-10-19 23:28:59 -0700605 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800607 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608 return status;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800609 status = nfsd_link(rqstp, &cstate->current_fh,
610 link->li_name, link->li_namelen, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611 if (!status)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800612 set_change_info(&link->li_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613 return status;
614}
615
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500616static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617{
618 struct svc_fh tmp_fh;
Al Virob37ad282006-10-19 23:28:59 -0700619 __be32 ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620
621 fh_init(&tmp_fh, NFS4_FHSIZE);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700622 ret = exp_pseudoroot(rqstp, &tmp_fh);
623 if (ret)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624 return ret;
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500625 if (tmp_fh.fh_dentry == fh->fh_dentry) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626 fh_put(&tmp_fh);
627 return nfserr_noent;
628 }
629 fh_put(&tmp_fh);
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500630 return nfsd_lookup(rqstp, fh, "..", 2, fh);
631}
632
633static __be32
634nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
635 void *arg)
636{
637 return nfsd4_do_lookupp(rqstp, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700638}
639
J.Bruce Fields71911552006-12-13 00:35:29 -0800640static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800641nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
642 struct nfsd4_lookup *lookup)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800644 return nfsd_lookup(rqstp, &cstate->current_fh,
645 lookup->lo_name, lookup->lo_len,
646 &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700647}
648
J.Bruce Fields71911552006-12-13 00:35:29 -0800649static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800650nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
651 struct nfsd4_read *read)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652{
Al Virob37ad282006-10-19 23:28:59 -0700653 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700654
655 /* no need to check permission - this will be done in nfsd_read() */
656
NeilBrown7e06b7f2005-06-23 22:03:13 -0700657 read->rd_filp = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658 if (read->rd_offset >= OFFSET_MAX)
659 return nfserr_inval;
660
661 nfs4_lock_state();
662 /* check stateid */
Benny Halevydd453df2009-04-03 08:28:41 +0300663 if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid,
664 RD_STATE, &read->rd_filp))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
666 goto out;
667 }
NeilBrown7e06b7f2005-06-23 22:03:13 -0700668 if (read->rd_filp)
669 get_file(read->rd_filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670 status = nfs_ok;
671out:
672 nfs4_unlock_state();
673 read->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800674 read->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675 return status;
676}
677
J.Bruce Fields71911552006-12-13 00:35:29 -0800678static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800679nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
680 struct nfsd4_readdir *readdir)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681{
682 u64 cookie = readdir->rd_cookie;
683 static const nfs4_verifier zeroverf;
684
685 /* no need to check permission - this will be done in nfsd_readdir() */
686
687 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
688 return nfserr_inval;
689
Andy Adamson7e705702009-04-03 08:29:11 +0300690 readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
691 readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
692 readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700693
Bernd Schubert832023b2011-08-08 17:38:08 +0200694 if ((cookie == 1) || (cookie == 2) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -0700695 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
696 return nfserr_bad_cookie;
697
698 readdir->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800699 readdir->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700 return nfs_ok;
701}
702
J.Bruce Fields71911552006-12-13 00:35:29 -0800703static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800704nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
705 struct nfsd4_readlink *readlink)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700706{
707 readlink->rl_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800708 readlink->rl_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709 return nfs_ok;
710}
711
J.Bruce Fields71911552006-12-13 00:35:29 -0800712static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800713nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
714 struct nfsd4_remove *remove)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715{
Al Virob37ad282006-10-19 23:28:59 -0700716 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400718 if (locks_in_grace())
NeilBrownc815afc2005-06-23 22:03:00 -0700719 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800720 status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
721 remove->rm_name, remove->rm_namelen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700722 if (status == nfserr_symlink)
723 return nfserr_notdir;
724 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800725 fh_unlock(&cstate->current_fh);
726 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727 }
728 return status;
729}
730
J.Bruce Fields71911552006-12-13 00:35:29 -0800731static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800732nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
733 struct nfsd4_rename *rename)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700734{
Al Virob37ad282006-10-19 23:28:59 -0700735 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800737 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700738 return status;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400739 if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags
NeilBrownc815afc2005-06-23 22:03:00 -0700740 & NFSEXP_NOSUBTREECHECK))
741 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800742 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
743 rename->rn_snamelen, &cstate->current_fh,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744 rename->rn_tname, rename->rn_tnamelen);
745
746 /* the underlying filesystem returns different error's than required
747 * by NFSv4. both save_fh and current_fh have been verified.. */
748 if (status == nfserr_isdir)
749 status = nfserr_exist;
750 else if ((status == nfserr_notdir) &&
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800751 (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) &&
752 S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700753 status = nfserr_exist;
754 else if (status == nfserr_symlink)
755 status = nfserr_notdir;
756
757 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800758 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
759 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760 }
761 return status;
762}
763
J.Bruce Fields71911552006-12-13 00:35:29 -0800764static __be32
Andy Adamsondcb488a32007-07-17 04:04:51 -0700765nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
766 struct nfsd4_secinfo *secinfo)
767{
768 struct svc_fh resfh;
769 struct svc_export *exp;
770 struct dentry *dentry;
771 __be32 err;
772
773 fh_init(&resfh, NFS4_FHSIZE);
J. Bruce Fields29a78a32011-04-09 11:28:53 -0400774 err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC);
775 if (err)
776 return err;
Andy Adamsondcb488a32007-07-17 04:04:51 -0700777 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
778 secinfo->si_name, secinfo->si_namelen,
779 &exp, &dentry);
780 if (err)
781 return err;
782 if (dentry->d_inode == NULL) {
783 exp_put(exp);
784 err = nfserr_noent;
785 } else
786 secinfo->si_exp = exp;
787 dput(dentry);
J. Bruce Fields56560b92010-12-16 09:57:15 -0500788 if (cstate->minorversion)
789 /* See rfc 5661 section 2.6.3.1.1.8 */
790 fh_put(&cstate->current_fh);
Andy Adamsondcb488a32007-07-17 04:04:51 -0700791 return err;
792}
793
794static __be32
J. Bruce Fields04f4ad12010-12-16 09:51:13 -0500795nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
796 struct nfsd4_secinfo_no_name *sin)
797{
798 __be32 err;
799
800 switch (sin->sin_style) {
801 case NFS4_SECINFO_STYLE4_CURRENT_FH:
802 break;
803 case NFS4_SECINFO_STYLE4_PARENT:
804 err = nfsd4_do_lookupp(rqstp, &cstate->current_fh);
805 if (err)
806 return err;
807 break;
808 default:
809 return nfserr_inval;
810 }
811 exp_get(cstate->current_fh.fh_export);
812 sin->sin_exp = cstate->current_fh.fh_export;
813 fh_put(&cstate->current_fh);
814 return nfs_ok;
815}
816
817static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800818nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
819 struct nfsd4_setattr *setattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820{
Al Virob37ad282006-10-19 23:28:59 -0700821 __be32 status = nfs_ok;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822
Linus Torvalds1da177e2005-04-16 15:20:36 -0700823 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
824 nfs4_lock_state();
Benny Halevydd453df2009-04-03 08:28:41 +0300825 status = nfs4_preprocess_stateid_op(cstate,
J. Bruce Fields6150ef02009-02-21 13:36:16 -0800826 &setattr->sa_stateid, WR_STATE, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700827 nfs4_unlock_state();
J. Bruce Fields375c5542006-01-18 17:43:33 -0800828 if (status) {
Greg Banks3e3b4802006-10-02 02:17:41 -0700829 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
J. Bruce Fields375c5542006-01-18 17:43:33 -0800830 return status;
831 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700832 }
Dave Hansen18f335a2008-02-15 14:37:38 -0800833 status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt);
834 if (status)
835 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700836 status = nfs_ok;
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800837
838 status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
839 nfsd_attrmask);
840 if (status)
841 goto out;
842
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843 if (setattr->sa_acl != NULL)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800844 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
845 setattr->sa_acl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846 if (status)
Dave Hansen18f335a2008-02-15 14:37:38 -0800847 goto out;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800848 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700849 0, (time_t)0);
Dave Hansen18f335a2008-02-15 14:37:38 -0800850out:
851 mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852 return status;
853}
854
J.Bruce Fields71911552006-12-13 00:35:29 -0800855static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800856nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
857 struct nfsd4_write *write)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700858{
859 stateid_t *stateid = &write->wr_stateid;
860 struct file *filp = NULL;
861 u32 *p;
Al Virob37ad282006-10-19 23:28:59 -0700862 __be32 status = nfs_ok;
David Shaw31dec252009-03-05 20:16:14 -0500863 unsigned long cnt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700864
865 /* no need to check permission - this will be done in nfsd_write() */
866
867 if (write->wr_offset >= OFFSET_MAX)
868 return nfserr_inval;
869
870 nfs4_lock_state();
Benny Halevydd453df2009-04-03 08:28:41 +0300871 status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp);
NeilBrown7e06b7f2005-06-23 22:03:13 -0700872 if (filp)
873 get_file(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700874 nfs4_unlock_state();
875
J. Bruce Fields375c5542006-01-18 17:43:33 -0800876 if (status) {
877 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
878 return status;
879 }
880
David Shaw31dec252009-03-05 20:16:14 -0500881 cnt = write->wr_buflen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882 write->wr_how_written = write->wr_stable_how;
883 p = (u32 *)write->wr_verifier.data;
884 *p++ = nfssvc_boot.tv_sec;
885 *p++ = nfssvc_boot.tv_usec;
886
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800887 status = nfsd_write(rqstp, &cstate->current_fh, filp,
888 write->wr_offset, rqstp->rq_vec, write->wr_vlen,
David Shaw31dec252009-03-05 20:16:14 -0500889 &cnt, &write->wr_how_written);
NeilBrown7e06b7f2005-06-23 22:03:13 -0700890 if (filp)
891 fput(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892
David Shaw31dec252009-03-05 20:16:14 -0500893 write->wr_bytes_written = cnt;
894
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895 if (status == nfserr_symlink)
896 status = nfserr_inval;
897 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898}
899
900/* This routine never returns NFS_OK! If there are no other errors, it
901 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
902 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
903 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
904 */
Al Virob37ad282006-10-19 23:28:59 -0700905static __be32
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -0800906_nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800907 struct nfsd4_verify *verify)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700908{
Al Viro2ebbc012006-10-19 23:28:58 -0700909 __be32 *buf, *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700910 int count;
Al Virob37ad282006-10-19 23:28:59 -0700911 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700912
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200913 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914 if (status)
915 return status;
916
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800917 status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
918 if (status)
919 return status;
920
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
922 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
923 return nfserr_inval;
924 if (verify->ve_attrlen & 3)
925 return nfserr_inval;
926
927 /* count in words:
928 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
929 */
930 count = 4 + (verify->ve_attrlen >> 2);
931 buf = kmalloc(count << 2, GFP_KERNEL);
932 if (!buf)
933 return nfserr_resource;
934
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800935 status = nfsd4_encode_fattr(&cstate->current_fh,
936 cstate->current_fh.fh_export,
937 cstate->current_fh.fh_dentry, buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700938 &count, verify->ve_bmval,
Frank Filz406a7ea2007-11-27 11:34:05 -0800939 rqstp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700940
941 /* this means that nfsd4_encode_fattr() ran out of space */
942 if (status == nfserr_resource && count == 0)
943 status = nfserr_not_same;
944 if (status)
945 goto out_kfree;
946
Benny Halevy95ec28c2009-04-03 08:29:08 +0300947 /* skip bitmap */
948 p = buf + 1 + ntohl(buf[0]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700949 status = nfserr_not_same;
950 if (ntohl(*p++) != verify->ve_attrlen)
951 goto out_kfree;
952 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
953 status = nfserr_same;
954
955out_kfree:
956 kfree(buf);
957 return status;
958}
959
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -0800960static __be32
961nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
962 struct nfsd4_verify *verify)
963{
964 __be32 status;
965
966 status = _nfsd4_verify(rqstp, cstate, verify);
967 return status == nfserr_not_same ? nfs_ok : status;
968}
969
970static __be32
971nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
972 struct nfsd4_verify *verify)
973{
974 __be32 status;
975
976 status = _nfsd4_verify(rqstp, cstate, verify);
977 return status == nfserr_same ? nfs_ok : status;
978}
979
Linus Torvalds1da177e2005-04-16 15:20:36 -0700980/*
981 * NULL call.
982 */
Al Viro7111c662006-10-19 23:28:45 -0700983static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700984nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
985{
986 return nfs_ok;
987}
988
Shankar Anande2b20952006-07-10 04:45:44 -0700989static inline void nfsd4_increment_op_stats(u32 opnum)
990{
991 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
992 nfsdstats.nfs4_opcount[opnum]++;
993}
994
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800995typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
996 void *);
Andy Adamsonf9bb94c2009-04-03 08:28:12 +0300997enum nfsd4_op_flags {
998 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
Mi Jinlong5ece3ca2011-02-18 09:08:31 +0800999 ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */
1000 ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */
J. Bruce Fields68d93182011-04-08 17:00:50 -04001001 /* For rfc 5661 section 2.6.3.1.1: */
1002 OP_HANDLES_WRONGSEC = 1 << 3,
1003 OP_IS_PUTFH_LIKE = 1 << 4,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001004};
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001005
1006struct nfsd4_operation {
1007 nfsd4op_func op_func;
1008 u32 op_flags;
Benny Halevyb001a1b2008-07-02 11:15:03 +03001009 char *op_name;
J. Bruce Fields10910062011-01-24 12:11:02 -05001010 /*
1011 * We use the DRC for compounds containing non-idempotent
1012 * operations, *except* those that are 4.1-specific (since
1013 * sessions provide their own EOS), and except for stateful
1014 * operations other than setclientid and setclientid_confirm
1015 * (since sequence numbers provide EOS for open, lock, etc in
1016 * the v4.0 case).
1017 */
1018 bool op_cacheresult;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001019};
1020
1021static struct nfsd4_operation nfsd4_ops[];
1022
Adrian Bunkf1c7f792008-08-08 19:26:42 +03001023static const char *nfsd4_op_name(unsigned opnum);
Benny Halevyb001a1b2008-07-02 11:15:03 +03001024
Linus Torvalds1da177e2005-04-16 15:20:36 -07001025/*
J. Bruce Fields57716352010-04-21 12:27:19 -04001026 * Enforce NFSv4.1 COMPOUND ordering rules:
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001027 *
J. Bruce Fields57716352010-04-21 12:27:19 -04001028 * Also note, enforced elsewhere:
1029 * - SEQUENCE other than as first op results in
1030 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001031 * - BIND_CONN_TO_SESSION must be the only op in its compound.
1032 * (Enforced in nfsd4_bind_conn_to_session().)
J. Bruce Fields57716352010-04-21 12:27:19 -04001033 * - DESTROY_SESSION must be the final operation in a compound, if
1034 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
1035 * (Enforced in nfsd4_destroy_session().)
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001036 */
J. Bruce Fields57716352010-04-21 12:27:19 -04001037static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args)
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001038{
J. Bruce Fields57716352010-04-21 12:27:19 -04001039 struct nfsd4_op *op = &args->ops[0];
1040
1041 /* These ordering requirements don't apply to NFSv4.0: */
1042 if (args->minorversion == 0)
1043 return nfs_ok;
1044 /* This is weird, but OK, not our problem: */
1045 if (args->opcnt == 0)
1046 return nfs_ok;
1047 if (op->status == nfserr_op_illegal)
1048 return nfs_ok;
1049 if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP))
1050 return nfserr_op_not_in_session;
1051 if (op->opnum == OP_SEQUENCE)
1052 return nfs_ok;
1053 if (args->opcnt != 1)
1054 return nfserr_not_only_op;
1055 return nfs_ok;
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001056}
1057
J. Bruce Fields22b03212011-04-09 11:23:24 -04001058static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op)
1059{
1060 return &nfsd4_ops[op->opnum];
1061}
1062
J. Bruce Fields10910062011-01-24 12:11:02 -05001063bool nfsd4_cache_this_op(struct nfsd4_op *op)
1064{
1065 return OPDESC(op)->op_cacheresult;
1066}
1067
J. Bruce Fields68d93182011-04-08 17:00:50 -04001068static bool need_wrongsec_check(struct svc_rqst *rqstp)
1069{
1070 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1071 struct nfsd4_compoundargs *argp = rqstp->rq_argp;
1072 struct nfsd4_op *this = &argp->ops[resp->opcnt - 1];
1073 struct nfsd4_op *next = &argp->ops[resp->opcnt];
1074 struct nfsd4_operation *thisd;
1075 struct nfsd4_operation *nextd;
1076
1077 thisd = OPDESC(this);
1078 /*
1079 * Most ops check wronsec on our own; only the putfh-like ops
1080 * have special rules.
1081 */
1082 if (!(thisd->op_flags & OP_IS_PUTFH_LIKE))
1083 return false;
1084 /*
1085 * rfc 5661 2.6.3.1.1.6: don't bother erroring out a
1086 * put-filehandle operation if we're not going to use the
1087 * result:
1088 */
1089 if (argp->opcnt == resp->opcnt)
1090 return false;
1091
1092 nextd = OPDESC(next);
1093 /*
1094 * Rest of 2.6.3.1.1: certain operations will return WRONGSEC
1095 * errors themselves as necessary; others should check for them
1096 * now:
1097 */
1098 return !(nextd->op_flags & OP_HANDLES_WRONGSEC);
1099}
1100
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001101/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001102 * COMPOUND call.
1103 */
Al Viro7111c662006-10-19 23:28:45 -07001104static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -07001105nfsd4_proc_compound(struct svc_rqst *rqstp,
1106 struct nfsd4_compoundargs *args,
1107 struct nfsd4_compoundres *resp)
1108{
1109 struct nfsd4_op *op;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001110 struct nfsd4_operation *opdesc;
Andy Adamsone354d572009-03-28 11:30:52 +03001111 struct nfsd4_compound_state *cstate = &resp->cstate;
J.Bruce Fieldse5710192006-12-13 00:35:20 -08001112 int slack_bytes;
Al Virob37ad282006-10-19 23:28:59 -07001113 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001114
Linus Torvalds1da177e2005-04-16 15:20:36 -07001115 resp->xbuf = &rqstp->rq_res;
Andy Adamsone354d572009-03-28 11:30:52 +03001116 resp->p = rqstp->rq_res.head[0].iov_base +
1117 rqstp->rq_res.head[0].iov_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001118 resp->tagp = resp->p;
1119 /* reserve space for: taglen, tag, and opcnt */
1120 resp->p += 2 + XDR_QUADLEN(args->taglen);
1121 resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
1122 resp->taglen = args->taglen;
1123 resp->tag = args->tag;
1124 resp->opcnt = 0;
1125 resp->rqstp = rqstp;
Andy Adamsond87a8ad2009-04-03 08:28:53 +03001126 resp->cstate.minorversion = args->minorversion;
Andy Adamsone354d572009-03-28 11:30:52 +03001127 resp->cstate.replay_owner = NULL;
J. Bruce Fields26c0c752010-04-24 15:35:43 -04001128 resp->cstate.session = NULL;
Andy Adamsone354d572009-03-28 11:30:52 +03001129 fh_init(&resp->cstate.current_fh, NFS4_FHSIZE);
1130 fh_init(&resp->cstate.save_fh, NFS4_FHSIZE);
NeilBrown8ff30fa2010-08-12 17:04:07 +10001131 /*
1132 * Don't use the deferral mechanism for NFSv4; compounds make it
1133 * too hard to avoid non-idempotency problems.
1134 */
1135 rqstp->rq_usedeferral = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001136
1137 /*
1138 * According to RFC3010, this takes precedence over all other errors.
1139 */
1140 status = nfserr_minor_vers_mismatch;
Benny Halevy8daf2202009-04-03 08:28:59 +03001141 if (args->minorversion > nfsd_supported_minorversion)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001142 goto out;
1143
J. Bruce Fields57716352010-04-21 12:27:19 -04001144 status = nfs41_check_op_ordering(args);
1145 if (status) {
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001146 op = &args->ops[0];
J. Bruce Fields57716352010-04-21 12:27:19 -04001147 op->status = status;
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001148 goto encode_op;
1149 }
1150
Linus Torvalds1da177e2005-04-16 15:20:36 -07001151 while (!status && resp->opcnt < args->opcnt) {
1152 op = &args->ops[resp->opcnt++];
1153
Benny Halevyb001a1b2008-07-02 11:15:03 +03001154 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
1155 resp->opcnt, args->opcnt, op->opnum,
1156 nfsd4_op_name(op->opnum));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001157 /*
1158 * The XDR decode routines may have pre-set op->status;
1159 * for example, if there is a miscellaneous XDR error
1160 * it will be set to nfserr_bad_xdr.
1161 */
1162 if (op->status)
1163 goto encode_op;
1164
1165 /* We must be able to encode a successful response to
1166 * this operation, with enough room left over to encode a
1167 * failed response to the next operation. If we don't
1168 * have enough room, fail with ERR_RESOURCE.
1169 */
J.Bruce Fieldse5710192006-12-13 00:35:20 -08001170 slack_bytes = (char *)resp->end - (char *)resp->p;
1171 if (slack_bytes < COMPOUND_SLACK_SPACE
1172 + COMPOUND_ERR_SLACK_SPACE) {
1173 BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001174 op->status = nfserr_resource;
1175 goto encode_op;
1176 }
1177
J. Bruce Fields22b03212011-04-09 11:23:24 -04001178 opdesc = OPDESC(op);
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001179
J.Bruce Fieldsca364312006-12-13 00:35:27 -08001180 if (!cstate->current_fh.fh_dentry) {
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001181 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -07001182 op->status = nfserr_nofilehandle;
1183 goto encode_op;
1184 }
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001185 } else if (cstate->current_fh.fh_export->ex_fslocs.migrated &&
1186 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -07001187 op->status = nfserr_moved;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001188 goto encode_op;
1189 }
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001190
1191 if (opdesc->op_func)
1192 op->status = opdesc->op_func(rqstp, cstate, &op->u);
1193 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07001194 BUG_ON(op->status == nfs_ok);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001195
J. Bruce Fields68d93182011-04-08 17:00:50 -04001196 if (!op->status && need_wrongsec_check(rqstp))
1197 op->status = check_nfsd_access(cstate->current_fh.fh_export, rqstp);
1198
Linus Torvalds1da177e2005-04-16 15:20:36 -07001199encode_op:
Andy Adamson49557cc2009-07-23 19:02:16 -04001200 /* Only from SEQUENCE */
Andy Adamsonda3846a2009-04-03 08:28:22 +03001201 if (resp->cstate.status == nfserr_replay_cache) {
1202 dprintk("%s NFS4.1 replay from cache\n", __func__);
Andy Adamsonabfabf82009-07-23 19:02:18 -04001203 status = op->status;
Andy Adamsonda3846a2009-04-03 08:28:22 +03001204 goto out;
1205 }
Al Viroa90b0612006-10-19 23:29:03 -07001206 if (op->status == nfserr_replay_me) {
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001207 op->replay = &cstate->replay_owner->so_replay;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001208 nfsd4_encode_replay(resp, op);
1209 status = op->status = op->replay->rp_status;
1210 } else {
1211 nfsd4_encode_operation(resp, op);
1212 status = op->status;
1213 }
Benny Halevy04077172008-12-15 19:40:49 +02001214
1215 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
1216 args->ops, args->opcnt, resp->opcnt, op->opnum,
1217 be32_to_cpu(status));
1218
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001219 if (cstate->replay_owner) {
1220 nfs4_put_stateowner(cstate->replay_owner);
1221 cstate->replay_owner = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001222 }
NeilBrown7e06b7f2005-06-23 22:03:13 -07001223 /* XXX Ugh, we need to get rid of this kind of special case: */
1224 if (op->opnum == OP_READ && op->u.read.rd_filp)
1225 fput(op->u.read.rd_filp);
Shankar Anande2b20952006-07-10 04:45:44 -07001226
1227 nfsd4_increment_op_stats(op->opnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001228 }
1229
Andy Adamsonda3846a2009-04-03 08:28:22 +03001230 resp->cstate.status = status;
Andy Adamsone354d572009-03-28 11:30:52 +03001231 fh_put(&resp->cstate.current_fh);
1232 fh_put(&resp->cstate.save_fh);
1233 BUG_ON(resp->cstate.replay_owner);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001234out:
Andy Adamson2f425872009-04-03 08:27:32 +03001235 /* Reset deferral mechanism for RPC deferrals */
1236 rqstp->rq_usedeferral = 1;
J. Bruce Fields3b12cd92008-05-05 17:17:44 -04001237 dprintk("nfsv4 compound returned %d\n", ntohl(status));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001238 return status;
1239}
1240
Benny Halevy20766012009-03-28 11:32:05 +03001241static struct nfsd4_operation nfsd4_ops[] = {
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001242 [OP_ACCESS] = {
1243 .op_func = (nfsd4op_func)nfsd4_access,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001244 .op_name = "OP_ACCESS",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001245 },
1246 [OP_CLOSE] = {
1247 .op_func = (nfsd4op_func)nfsd4_close,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001248 .op_name = "OP_CLOSE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001249 },
1250 [OP_COMMIT] = {
1251 .op_func = (nfsd4op_func)nfsd4_commit,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001252 .op_name = "OP_COMMIT",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001253 },
1254 [OP_CREATE] = {
1255 .op_func = (nfsd4op_func)nfsd4_create,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001256 .op_name = "OP_CREATE",
J. Bruce Fields10910062011-01-24 12:11:02 -05001257 .op_cacheresult = true,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001258 },
1259 [OP_DELEGRETURN] = {
1260 .op_func = (nfsd4op_func)nfsd4_delegreturn,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001261 .op_name = "OP_DELEGRETURN",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001262 },
1263 [OP_GETATTR] = {
1264 .op_func = (nfsd4op_func)nfsd4_getattr,
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001265 .op_flags = ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001266 .op_name = "OP_GETATTR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001267 },
1268 [OP_GETFH] = {
1269 .op_func = (nfsd4op_func)nfsd4_getfh,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001270 .op_name = "OP_GETFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001271 },
1272 [OP_LINK] = {
1273 .op_func = (nfsd4op_func)nfsd4_link,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001274 .op_name = "OP_LINK",
J. Bruce Fields10910062011-01-24 12:11:02 -05001275 .op_cacheresult = true,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001276 },
1277 [OP_LOCK] = {
1278 .op_func = (nfsd4op_func)nfsd4_lock,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001279 .op_name = "OP_LOCK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001280 },
1281 [OP_LOCKT] = {
1282 .op_func = (nfsd4op_func)nfsd4_lockt,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001283 .op_name = "OP_LOCKT",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001284 },
1285 [OP_LOCKU] = {
1286 .op_func = (nfsd4op_func)nfsd4_locku,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001287 .op_name = "OP_LOCKU",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001288 },
1289 [OP_LOOKUP] = {
1290 .op_func = (nfsd4op_func)nfsd4_lookup,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001291 .op_flags = OP_HANDLES_WRONGSEC,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001292 .op_name = "OP_LOOKUP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001293 },
1294 [OP_LOOKUPP] = {
1295 .op_func = (nfsd4op_func)nfsd4_lookupp,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001296 .op_flags = OP_HANDLES_WRONGSEC,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001297 .op_name = "OP_LOOKUPP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001298 },
1299 [OP_NVERIFY] = {
1300 .op_func = (nfsd4op_func)nfsd4_nverify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001301 .op_name = "OP_NVERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001302 },
1303 [OP_OPEN] = {
1304 .op_func = (nfsd4op_func)nfsd4_open,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001305 .op_flags = OP_HANDLES_WRONGSEC,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001306 .op_name = "OP_OPEN",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001307 },
1308 [OP_OPEN_CONFIRM] = {
1309 .op_func = (nfsd4op_func)nfsd4_open_confirm,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001310 .op_name = "OP_OPEN_CONFIRM",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001311 },
1312 [OP_OPEN_DOWNGRADE] = {
1313 .op_func = (nfsd4op_func)nfsd4_open_downgrade,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001314 .op_name = "OP_OPEN_DOWNGRADE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001315 },
1316 [OP_PUTFH] = {
1317 .op_func = (nfsd4op_func)nfsd4_putfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001318 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1319 | OP_IS_PUTFH_LIKE,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001320 .op_name = "OP_PUTFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001321 },
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001322 [OP_PUTPUBFH] = {
J. Bruce Fieldsa1c8c4d2009-03-09 12:17:29 -04001323 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001324 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1325 | OP_IS_PUTFH_LIKE,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001326 .op_name = "OP_PUTPUBFH",
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001327 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001328 [OP_PUTROOTFH] = {
1329 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001330 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1331 | OP_IS_PUTFH_LIKE,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001332 .op_name = "OP_PUTROOTFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001333 },
1334 [OP_READ] = {
1335 .op_func = (nfsd4op_func)nfsd4_read,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001336 .op_name = "OP_READ",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001337 },
1338 [OP_READDIR] = {
1339 .op_func = (nfsd4op_func)nfsd4_readdir,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001340 .op_name = "OP_READDIR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001341 },
1342 [OP_READLINK] = {
1343 .op_func = (nfsd4op_func)nfsd4_readlink,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001344 .op_name = "OP_READLINK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001345 },
1346 [OP_REMOVE] = {
1347 .op_func = (nfsd4op_func)nfsd4_remove,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001348 .op_name = "OP_REMOVE",
J. Bruce Fields10910062011-01-24 12:11:02 -05001349 .op_cacheresult = true,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001350 },
1351 [OP_RENAME] = {
Benny Halevyb001a1b2008-07-02 11:15:03 +03001352 .op_name = "OP_RENAME",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001353 .op_func = (nfsd4op_func)nfsd4_rename,
J. Bruce Fields10910062011-01-24 12:11:02 -05001354 .op_cacheresult = true,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001355 },
1356 [OP_RENEW] = {
1357 .op_func = (nfsd4op_func)nfsd4_renew,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001358 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001359 .op_name = "OP_RENEW",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001360 },
1361 [OP_RESTOREFH] = {
1362 .op_func = (nfsd4op_func)nfsd4_restorefh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001363 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1364 | OP_IS_PUTFH_LIKE,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001365 .op_name = "OP_RESTOREFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001366 },
1367 [OP_SAVEFH] = {
1368 .op_func = (nfsd4op_func)nfsd4_savefh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001369 .op_flags = OP_HANDLES_WRONGSEC,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001370 .op_name = "OP_SAVEFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001371 },
Andy Adamsondcb488a32007-07-17 04:04:51 -07001372 [OP_SECINFO] = {
1373 .op_func = (nfsd4op_func)nfsd4_secinfo,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001374 .op_flags = OP_HANDLES_WRONGSEC,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001375 .op_name = "OP_SECINFO",
Andy Adamsondcb488a32007-07-17 04:04:51 -07001376 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001377 [OP_SETATTR] = {
1378 .op_func = (nfsd4op_func)nfsd4_setattr,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001379 .op_name = "OP_SETATTR",
J. Bruce Fields10910062011-01-24 12:11:02 -05001380 .op_cacheresult = true,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001381 },
1382 [OP_SETCLIENTID] = {
1383 .op_func = (nfsd4op_func)nfsd4_setclientid,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001384 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001385 .op_name = "OP_SETCLIENTID",
J. Bruce Fields10910062011-01-24 12:11:02 -05001386 .op_cacheresult = true,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001387 },
1388 [OP_SETCLIENTID_CONFIRM] = {
1389 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001390 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001391 .op_name = "OP_SETCLIENTID_CONFIRM",
J. Bruce Fields10910062011-01-24 12:11:02 -05001392 .op_cacheresult = true,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001393 },
1394 [OP_VERIFY] = {
1395 .op_func = (nfsd4op_func)nfsd4_verify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001396 .op_name = "OP_VERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001397 },
1398 [OP_WRITE] = {
1399 .op_func = (nfsd4op_func)nfsd4_write,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001400 .op_name = "OP_WRITE",
J. Bruce Fields10910062011-01-24 12:11:02 -05001401 .op_cacheresult = true,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001402 },
1403 [OP_RELEASE_LOCKOWNER] = {
1404 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001405 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001406 .op_name = "OP_RELEASE_LOCKOWNER",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001407 },
Andy Adamson069b6ad2009-04-03 08:27:58 +03001408
1409 /* NFSv4.1 operations */
1410 [OP_EXCHANGE_ID] = {
1411 .op_func = (nfsd4op_func)nfsd4_exchange_id,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001412 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001413 .op_name = "OP_EXCHANGE_ID",
1414 },
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001415 [OP_BIND_CONN_TO_SESSION] = {
1416 .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session,
1417 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
1418 .op_name = "OP_BIND_CONN_TO_SESSION",
1419 },
Andy Adamson069b6ad2009-04-03 08:27:58 +03001420 [OP_CREATE_SESSION] = {
1421 .op_func = (nfsd4op_func)nfsd4_create_session,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001422 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001423 .op_name = "OP_CREATE_SESSION",
1424 },
1425 [OP_DESTROY_SESSION] = {
1426 .op_func = (nfsd4op_func)nfsd4_destroy_session,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001427 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001428 .op_name = "OP_DESTROY_SESSION",
1429 },
1430 [OP_SEQUENCE] = {
1431 .op_func = (nfsd4op_func)nfsd4_sequence,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001432 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001433 .op_name = "OP_SEQUENCE",
1434 },
Benny Halevy094b5d72011-06-16 11:39:10 -04001435 [OP_DESTROY_CLIENTID] = {
1436 .op_func = NULL,
1437 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
1438 .op_name = "OP_DESTROY_CLIENTID",
1439 },
J. Bruce Fields4dc6ec02010-04-19 15:11:28 -04001440 [OP_RECLAIM_COMPLETE] = {
1441 .op_func = (nfsd4op_func)nfsd4_reclaim_complete,
1442 .op_flags = ALLOWED_WITHOUT_FH,
1443 .op_name = "OP_RECLAIM_COMPLETE",
1444 },
J. Bruce Fields04f4ad12010-12-16 09:51:13 -05001445 [OP_SECINFO_NO_NAME] = {
1446 .op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001447 .op_flags = OP_HANDLES_WRONGSEC,
J. Bruce Fields04f4ad12010-12-16 09:51:13 -05001448 .op_name = "OP_SECINFO_NO_NAME",
1449 },
Bryan Schumaker17456802011-07-13 10:50:48 -04001450 [OP_TEST_STATEID] = {
1451 .op_func = (nfsd4op_func)nfsd4_test_stateid,
1452 .op_flags = ALLOWED_WITHOUT_FH,
1453 .op_name = "OP_TEST_STATEID",
1454 },
Bryan Schumakere1ca12d2011-07-13 11:04:21 -04001455 [OP_FREE_STATEID] = {
1456 .op_func = (nfsd4op_func)nfsd4_free_stateid,
1457 .op_flags = ALLOWED_WITHOUT_FH,
1458 .op_name = "OP_FREE_STATEID",
1459 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001460};
1461
Adrian Bunkf1c7f792008-08-08 19:26:42 +03001462static const char *nfsd4_op_name(unsigned opnum)
Benny Halevyb001a1b2008-07-02 11:15:03 +03001463{
1464 if (opnum < ARRAY_SIZE(nfsd4_ops))
1465 return nfsd4_ops[opnum].op_name;
1466 return "unknown_operation";
1467}
1468
Linus Torvalds1da177e2005-04-16 15:20:36 -07001469#define nfsd4_voidres nfsd4_voidargs
Linus Torvalds1da177e2005-04-16 15:20:36 -07001470struct nfsd4_voidargs { int dummy; };
1471
Linus Torvalds1da177e2005-04-16 15:20:36 -07001472static struct svc_procedure nfsd_procedures4[2] = {
Yu Zhiguo0a93a472009-05-19 14:09:54 +08001473 [NFSPROC4_NULL] = {
1474 .pc_func = (svc_procfunc) nfsd4_proc_null,
1475 .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
1476 .pc_argsize = sizeof(struct nfsd4_voidargs),
1477 .pc_ressize = sizeof(struct nfsd4_voidres),
1478 .pc_cachetype = RC_NOCACHE,
1479 .pc_xdrressize = 1,
1480 },
1481 [NFSPROC4_COMPOUND] = {
1482 .pc_func = (svc_procfunc) nfsd4_proc_compound,
1483 .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
1484 .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
1485 .pc_argsize = sizeof(struct nfsd4_compoundargs),
1486 .pc_ressize = sizeof(struct nfsd4_compoundres),
J. Bruce Fields3e98abf2011-07-16 17:15:10 -04001487 .pc_release = nfsd4_release_compoundargs,
Yu Zhiguo0a93a472009-05-19 14:09:54 +08001488 .pc_cachetype = RC_NOCACHE,
1489 .pc_xdrressize = NFSD_BUFSIZE/4,
1490 },
Linus Torvalds1da177e2005-04-16 15:20:36 -07001491};
1492
1493struct svc_version nfsd_version4 = {
1494 .vs_vers = 4,
1495 .vs_nproc = 2,
1496 .vs_proc = nfsd_procedures4,
1497 .vs_dispatch = nfsd_dispatch,
1498 .vs_xdrsize = NFS4_SVC_XDRSIZE,
1499};
1500
1501/*
1502 * Local variables:
1503 * c-basic-offset: 8
1504 * End:
1505 */