blob: 3a6dbd70b34b57146cacfb8e22d0601481ec5349 [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 Fieldsa4773c02009-02-02 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 Fieldsa4773c02009-02-02 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
Andy Adamson60adfc52009-04-03 08:28:50 +0300294 if (nfsd4_has_session(cstate))
295 copy_clientid(&open->op_clientid, cstate->session);
296
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297 nfs4_lock_state();
298
299 /* check seqid for replay. set nfs4_owner */
Andy Adamson66689582009-04-03 08:28:45 +0300300 resp = rqstp->rq_resp;
301 status = nfsd4_process_open1(&resp->cstate, open);
Al Viroa90b0612006-10-19 23:29:03 -0700302 if (status == nfserr_replay_me) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303 struct nfs4_replay *rp = &open->op_stateowner->so_replay;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800304 fh_put(&cstate->current_fh);
J. Bruce Fieldsa4773c02009-02-02 17:23:10 -0500305 fh_copy_shallow(&cstate->current_fh.fh_handle,
306 &rp->rp_openfh);
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200307 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 if (status)
309 dprintk("nfsd4_open: replay failed"
310 " restoring previous filehandle\n");
311 else
Al Viroa90b0612006-10-19 23:29:03 -0700312 status = nfserr_replay_me;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 }
314 if (status)
315 goto out;
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800316
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800317 status = nfsd4_check_open_attributes(rqstp, cstate, open);
318 if (status)
319 goto out;
320
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800321 /* Openowner is now set, so sequence id will get bumped. Now we need
322 * these checks before we do any creates: */
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800323 status = nfserr_grace;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400324 if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800325 goto out;
326 status = nfserr_no_grace;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400327 if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800328 goto out;
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800329
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 switch (open->op_claim_type) {
NeilBrown0dd3c192005-06-23 22:02:56 -0700331 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332 case NFS4_OPEN_CLAIM_NULL:
333 /*
334 * (1) set CURRENT_FH to the file being opened,
335 * creating it if necessary, (2) set open->op_cinfo,
336 * (3) set open->op_truncate if the file is to be
337 * truncated after opening, (4) do permission checking.
338 */
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800339 status = do_open_lookup(rqstp, &cstate->current_fh,
340 open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341 if (status)
342 goto out;
343 break;
344 case NFS4_OPEN_CLAIM_PREVIOUS:
J. Bruce Fieldsa5258252006-01-18 17:43:30 -0800345 open->op_stateowner->so_confirmed = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346 /*
347 * The CURRENT_FH is already set to the file being
348 * opened. (1) set open->op_cinfo, (2) set
349 * open->op_truncate if the file is to be truncated
350 * after opening, (3) do permission checking.
351 */
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800352 status = do_open_fhandle(rqstp, &cstate->current_fh,
353 open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 if (status)
355 goto out;
356 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
J. Bruce Fieldsa5258252006-01-18 17:43:30 -0800358 open->op_stateowner->so_confirmed = 1;
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400359 dprintk("NFSD: unsupported OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 open->op_claim_type);
361 status = nfserr_notsupp;
362 goto out;
363 default:
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400364 dprintk("NFSD: Invalid OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 open->op_claim_type);
366 status = nfserr_inval;
367 goto out;
368 }
369 /*
370 * nfsd4_process_open2() does the actual opening of the file. If
371 * successful, it (1) truncates the file if open->op_truncate was
372 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
373 */
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800374 status = nfsd4_process_open2(rqstp, &cstate->current_fh, open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375out:
Neil Brownf2327d92005-09-13 01:25:37 -0700376 if (open->op_stateowner) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377 nfs4_get_stateowner(open->op_stateowner);
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -0800378 cstate->replay_owner = open->op_stateowner;
Neil Brownf2327d92005-09-13 01:25:37 -0700379 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 nfs4_unlock_state();
381 return status;
382}
383
384/*
385 * filehandle-manipulating ops.
386 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800387static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800388nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
389 struct svc_fh **getfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800391 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392 return nfserr_nofilehandle;
393
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800394 *getfh = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 return nfs_ok;
396}
397
J.Bruce Fields71911552006-12-13 00:35:29 -0800398static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800399nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
400 struct nfsd4_putfh *putfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800402 fh_put(&cstate->current_fh);
403 cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
404 memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
405 putfh->pf_fhlen);
J. Bruce Fields68d93182011-04-08 17:00:50 -0400406 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407}
408
J.Bruce Fields71911552006-12-13 00:35:29 -0800409static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800410nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
411 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412{
Al Virob37ad282006-10-19 23:28:59 -0700413 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800415 fh_put(&cstate->current_fh);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700416 status = exp_pseudoroot(rqstp, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 return status;
418}
419
J.Bruce Fields71911552006-12-13 00:35:29 -0800420static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800421nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
422 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800424 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425 return nfserr_restorefh;
426
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800427 fh_dup2(&cstate->current_fh, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428 return nfs_ok;
429}
430
J.Bruce Fields71911552006-12-13 00:35:29 -0800431static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800432nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
433 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800435 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436 return nfserr_nofilehandle;
437
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800438 fh_dup2(&cstate->save_fh, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439 return nfs_ok;
440}
441
442/*
443 * misc nfsv4 ops
444 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800445static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800446nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
447 struct nfsd4_access *access)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448{
449 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
450 return nfserr_inval;
451
452 access->ac_resp_access = access->ac_req_access;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800453 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
454 &access->ac_supported);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455}
456
J.Bruce Fields71911552006-12-13 00:35:29 -0800457static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800458nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
459 struct nfsd4_commit *commit)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460{
Al Virob37ad282006-10-19 23:28:59 -0700461 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462
463 u32 *p = (u32 *)commit->co_verf.data;
464 *p++ = nfssvc_boot.tv_sec;
465 *p++ = nfssvc_boot.tv_usec;
466
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800467 status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
468 commit->co_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469 if (status == nfserr_symlink)
470 status = nfserr_inval;
471 return status;
472}
473
Al Virob37ad282006-10-19 23:28:59 -0700474static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800475nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
476 struct nfsd4_create *create)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477{
478 struct svc_fh resfh;
Al Virob37ad282006-10-19 23:28:59 -0700479 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480 dev_t rdev;
481
482 fh_init(&resfh, NFS4_FHSIZE);
483
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200484 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
485 NFSD_MAY_CREATE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486 if (status == nfserr_symlink)
487 status = nfserr_notdir;
488 if (status)
489 return status;
490
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800491 status = check_attr_support(rqstp, cstate, create->cr_bmval,
492 nfsd_attrmask);
493 if (status)
494 return status;
495
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496 switch (create->cr_type) {
497 case NF4LNK:
498 /* ugh! we have to null-terminate the linktext, or
499 * vfs_symlink() will choke. it is always safe to
500 * null-terminate by brute force, since at worst we
501 * will overwrite the first byte of the create namelen
502 * in the XDR buffer, which has already been extracted
503 * during XDR decode.
504 */
505 create->cr_linkname[create->cr_linklen] = 0;
506
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800507 status = nfsd_symlink(rqstp, &cstate->current_fh,
508 create->cr_name, create->cr_namelen,
509 create->cr_linkname, create->cr_linklen,
510 &resfh, &create->cr_iattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511 break;
512
513 case NF4BLK:
514 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
515 if (MAJOR(rdev) != create->cr_specdata1 ||
516 MINOR(rdev) != create->cr_specdata2)
517 return nfserr_inval;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800518 status = nfsd_create(rqstp, &cstate->current_fh,
519 create->cr_name, create->cr_namelen,
520 &create->cr_iattr, S_IFBLK, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521 break;
522
523 case NF4CHR:
524 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
525 if (MAJOR(rdev) != create->cr_specdata1 ||
526 MINOR(rdev) != create->cr_specdata2)
527 return nfserr_inval;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800528 status = nfsd_create(rqstp, &cstate->current_fh,
529 create->cr_name, create->cr_namelen,
530 &create->cr_iattr,S_IFCHR, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531 break;
532
533 case NF4SOCK:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800534 status = nfsd_create(rqstp, &cstate->current_fh,
535 create->cr_name, create->cr_namelen,
536 &create->cr_iattr, S_IFSOCK, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537 break;
538
539 case NF4FIFO:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800540 status = nfsd_create(rqstp, &cstate->current_fh,
541 create->cr_name, create->cr_namelen,
542 &create->cr_iattr, S_IFIFO, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543 break;
544
545 case NF4DIR:
546 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800547 status = nfsd_create(rqstp, &cstate->current_fh,
548 create->cr_name, create->cr_namelen,
549 &create->cr_iattr, S_IFDIR, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550 break;
551
552 default:
553 status = nfserr_badtype;
554 }
555
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800556 if (status)
557 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800559 if (create->cr_acl != NULL)
560 do_set_nfs4_acl(rqstp, &resfh, create->cr_acl,
561 create->cr_bmval);
562
563 fh_unlock(&cstate->current_fh);
564 set_change_info(&create->cr_cinfo, &cstate->current_fh);
565 fh_dup2(&cstate->current_fh, &resfh);
566out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567 fh_put(&resfh);
568 return status;
569}
570
J.Bruce Fields71911552006-12-13 00:35:29 -0800571static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800572nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
573 struct nfsd4_getattr *getattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574{
Al Virob37ad282006-10-19 23:28:59 -0700575 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200577 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578 if (status)
579 return status;
580
581 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
582 return nfserr_inval;
583
Andy Adamson7e705702009-04-03 08:29:11 +0300584 getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
585 getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
586 getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800588 getattr->ga_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589 return nfs_ok;
590}
591
J.Bruce Fields71911552006-12-13 00:35:29 -0800592static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800593nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
594 struct nfsd4_link *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595{
Al Virob37ad282006-10-19 23:28:59 -0700596 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800598 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599 return status;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800600 status = nfsd_link(rqstp, &cstate->current_fh,
601 link->li_name, link->li_namelen, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602 if (!status)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800603 set_change_info(&link->li_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700604 return status;
605}
606
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500607static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608{
609 struct svc_fh tmp_fh;
Al Virob37ad282006-10-19 23:28:59 -0700610 __be32 ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611
612 fh_init(&tmp_fh, NFS4_FHSIZE);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700613 ret = exp_pseudoroot(rqstp, &tmp_fh);
614 if (ret)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615 return ret;
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500616 if (tmp_fh.fh_dentry == fh->fh_dentry) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617 fh_put(&tmp_fh);
618 return nfserr_noent;
619 }
620 fh_put(&tmp_fh);
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500621 return nfsd_lookup(rqstp, fh, "..", 2, fh);
622}
623
624static __be32
625nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
626 void *arg)
627{
628 return nfsd4_do_lookupp(rqstp, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629}
630
J.Bruce Fields71911552006-12-13 00:35:29 -0800631static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800632nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
633 struct nfsd4_lookup *lookup)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800635 return nfsd_lookup(rqstp, &cstate->current_fh,
636 lookup->lo_name, lookup->lo_len,
637 &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_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
642 struct nfsd4_read *read)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643{
Al Virob37ad282006-10-19 23:28:59 -0700644 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700645
646 /* no need to check permission - this will be done in nfsd_read() */
647
NeilBrown7e06b7f2005-06-23 22:03:13 -0700648 read->rd_filp = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649 if (read->rd_offset >= OFFSET_MAX)
650 return nfserr_inval;
651
652 nfs4_lock_state();
653 /* check stateid */
Benny Halevydd453df2009-04-03 08:28:41 +0300654 if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid,
655 RD_STATE, &read->rd_filp))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700656 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
657 goto out;
658 }
NeilBrown7e06b7f2005-06-23 22:03:13 -0700659 if (read->rd_filp)
660 get_file(read->rd_filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661 status = nfs_ok;
662out:
663 nfs4_unlock_state();
664 read->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800665 read->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666 return status;
667}
668
J.Bruce Fields71911552006-12-13 00:35:29 -0800669static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800670nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
671 struct nfsd4_readdir *readdir)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672{
673 u64 cookie = readdir->rd_cookie;
674 static const nfs4_verifier zeroverf;
675
676 /* no need to check permission - this will be done in nfsd_readdir() */
677
678 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
679 return nfserr_inval;
680
Andy Adamson7e705702009-04-03 08:29:11 +0300681 readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
682 readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
683 readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684
685 if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) ||
686 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
687 return nfserr_bad_cookie;
688
689 readdir->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800690 readdir->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691 return nfs_ok;
692}
693
J.Bruce Fields71911552006-12-13 00:35:29 -0800694static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800695nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
696 struct nfsd4_readlink *readlink)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697{
698 readlink->rl_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800699 readlink->rl_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_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
705 struct nfsd4_remove *remove)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700706{
Al Virob37ad282006-10-19 23:28:59 -0700707 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700708
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400709 if (locks_in_grace())
NeilBrownc815afc2005-06-23 22:03:00 -0700710 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800711 status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
712 remove->rm_name, remove->rm_namelen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713 if (status == nfserr_symlink)
714 return nfserr_notdir;
715 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800716 fh_unlock(&cstate->current_fh);
717 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718 }
719 return status;
720}
721
J.Bruce Fields71911552006-12-13 00:35:29 -0800722static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800723nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
724 struct nfsd4_rename *rename)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725{
Al Virob37ad282006-10-19 23:28:59 -0700726 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800728 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729 return status;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400730 if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags
NeilBrownc815afc2005-06-23 22:03:00 -0700731 & NFSEXP_NOSUBTREECHECK))
732 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800733 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
734 rename->rn_snamelen, &cstate->current_fh,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735 rename->rn_tname, rename->rn_tnamelen);
736
737 /* the underlying filesystem returns different error's than required
738 * by NFSv4. both save_fh and current_fh have been verified.. */
739 if (status == nfserr_isdir)
740 status = nfserr_exist;
741 else if ((status == nfserr_notdir) &&
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800742 (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) &&
743 S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744 status = nfserr_exist;
745 else if (status == nfserr_symlink)
746 status = nfserr_notdir;
747
748 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800749 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
750 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700751 }
752 return status;
753}
754
J.Bruce Fields71911552006-12-13 00:35:29 -0800755static __be32
Andy Adamsondcb488a2007-07-17 04:04:51 -0700756nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
757 struct nfsd4_secinfo *secinfo)
758{
759 struct svc_fh resfh;
760 struct svc_export *exp;
761 struct dentry *dentry;
762 __be32 err;
763
764 fh_init(&resfh, NFS4_FHSIZE);
J. Bruce Fields29a78a32011-04-09 11:28:53 -0400765 err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC);
766 if (err)
767 return err;
Andy Adamsondcb488a2007-07-17 04:04:51 -0700768 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
769 secinfo->si_name, secinfo->si_namelen,
770 &exp, &dentry);
771 if (err)
772 return err;
773 if (dentry->d_inode == NULL) {
774 exp_put(exp);
775 err = nfserr_noent;
776 } else
777 secinfo->si_exp = exp;
778 dput(dentry);
J. Bruce Fields56560b92010-12-16 09:57:15 -0500779 if (cstate->minorversion)
780 /* See rfc 5661 section 2.6.3.1.1.8 */
781 fh_put(&cstate->current_fh);
Andy Adamsondcb488a2007-07-17 04:04:51 -0700782 return err;
783}
784
785static __be32
J. Bruce Fields04f4ad12010-12-16 09:51:13 -0500786nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
787 struct nfsd4_secinfo_no_name *sin)
788{
789 __be32 err;
790
791 switch (sin->sin_style) {
792 case NFS4_SECINFO_STYLE4_CURRENT_FH:
793 break;
794 case NFS4_SECINFO_STYLE4_PARENT:
795 err = nfsd4_do_lookupp(rqstp, &cstate->current_fh);
796 if (err)
797 return err;
798 break;
799 default:
800 return nfserr_inval;
801 }
802 exp_get(cstate->current_fh.fh_export);
803 sin->sin_exp = cstate->current_fh.fh_export;
804 fh_put(&cstate->current_fh);
805 return nfs_ok;
806}
807
808static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800809nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
810 struct nfsd4_setattr *setattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700811{
Al Virob37ad282006-10-19 23:28:59 -0700812 __be32 status = nfs_ok;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700813
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
815 nfs4_lock_state();
Benny Halevydd453df2009-04-03 08:28:41 +0300816 status = nfs4_preprocess_stateid_op(cstate,
J. Bruce Fields6150ef02009-02-21 13:36:16 -0800817 &setattr->sa_stateid, WR_STATE, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700818 nfs4_unlock_state();
J. Bruce Fields375c5542006-01-18 17:43:33 -0800819 if (status) {
Greg Banks3e3b4802006-10-02 02:17:41 -0700820 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
J. Bruce Fields375c5542006-01-18 17:43:33 -0800821 return status;
822 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700823 }
Dave Hansen18f335a2008-02-15 14:37:38 -0800824 status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt);
825 if (status)
826 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700827 status = nfs_ok;
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800828
829 status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
830 nfsd_attrmask);
831 if (status)
832 goto out;
833
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834 if (setattr->sa_acl != NULL)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800835 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
836 setattr->sa_acl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837 if (status)
Dave Hansen18f335a2008-02-15 14:37:38 -0800838 goto out;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800839 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840 0, (time_t)0);
Dave Hansen18f335a2008-02-15 14:37:38 -0800841out:
842 mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843 return status;
844}
845
J.Bruce Fields71911552006-12-13 00:35:29 -0800846static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800847nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
848 struct nfsd4_write *write)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700849{
850 stateid_t *stateid = &write->wr_stateid;
851 struct file *filp = NULL;
852 u32 *p;
Al Virob37ad282006-10-19 23:28:59 -0700853 __be32 status = nfs_ok;
David Shaw31dec252009-03-05 20:16:14 -0500854 unsigned long cnt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700855
856 /* no need to check permission - this will be done in nfsd_write() */
857
858 if (write->wr_offset >= OFFSET_MAX)
859 return nfserr_inval;
860
861 nfs4_lock_state();
Benny Halevydd453df2009-04-03 08:28:41 +0300862 status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp);
NeilBrown7e06b7f2005-06-23 22:03:13 -0700863 if (filp)
864 get_file(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865 nfs4_unlock_state();
866
J. Bruce Fields375c5542006-01-18 17:43:33 -0800867 if (status) {
868 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
869 return status;
870 }
871
David Shaw31dec252009-03-05 20:16:14 -0500872 cnt = write->wr_buflen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700873 write->wr_how_written = write->wr_stable_how;
874 p = (u32 *)write->wr_verifier.data;
875 *p++ = nfssvc_boot.tv_sec;
876 *p++ = nfssvc_boot.tv_usec;
877
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800878 status = nfsd_write(rqstp, &cstate->current_fh, filp,
879 write->wr_offset, rqstp->rq_vec, write->wr_vlen,
David Shaw31dec252009-03-05 20:16:14 -0500880 &cnt, &write->wr_how_written);
NeilBrown7e06b7f2005-06-23 22:03:13 -0700881 if (filp)
882 fput(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700883
David Shaw31dec252009-03-05 20:16:14 -0500884 write->wr_bytes_written = cnt;
885
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886 if (status == nfserr_symlink)
887 status = nfserr_inval;
888 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700889}
890
891/* This routine never returns NFS_OK! If there are no other errors, it
892 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
893 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
894 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
895 */
Al Virob37ad282006-10-19 23:28:59 -0700896static __be32
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -0800897_nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800898 struct nfsd4_verify *verify)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700899{
Al Viro2ebbc012006-10-19 23:28:58 -0700900 __be32 *buf, *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700901 int count;
Al Virob37ad282006-10-19 23:28:59 -0700902 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200904 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700905 if (status)
906 return status;
907
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800908 status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
909 if (status)
910 return status;
911
Linus Torvalds1da177e2005-04-16 15:20:36 -0700912 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
913 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
914 return nfserr_inval;
915 if (verify->ve_attrlen & 3)
916 return nfserr_inval;
917
918 /* count in words:
919 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
920 */
921 count = 4 + (verify->ve_attrlen >> 2);
922 buf = kmalloc(count << 2, GFP_KERNEL);
923 if (!buf)
924 return nfserr_resource;
925
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800926 status = nfsd4_encode_fattr(&cstate->current_fh,
927 cstate->current_fh.fh_export,
928 cstate->current_fh.fh_dentry, buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700929 &count, verify->ve_bmval,
Frank Filz406a7ea2007-11-27 11:34:05 -0800930 rqstp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700931
932 /* this means that nfsd4_encode_fattr() ran out of space */
933 if (status == nfserr_resource && count == 0)
934 status = nfserr_not_same;
935 if (status)
936 goto out_kfree;
937
Benny Halevy95ec28c2009-04-03 08:29:08 +0300938 /* skip bitmap */
939 p = buf + 1 + ntohl(buf[0]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700940 status = nfserr_not_same;
941 if (ntohl(*p++) != verify->ve_attrlen)
942 goto out_kfree;
943 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
944 status = nfserr_same;
945
946out_kfree:
947 kfree(buf);
948 return status;
949}
950
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -0800951static __be32
952nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
953 struct nfsd4_verify *verify)
954{
955 __be32 status;
956
957 status = _nfsd4_verify(rqstp, cstate, verify);
958 return status == nfserr_not_same ? nfs_ok : status;
959}
960
961static __be32
962nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
963 struct nfsd4_verify *verify)
964{
965 __be32 status;
966
967 status = _nfsd4_verify(rqstp, cstate, verify);
968 return status == nfserr_same ? nfs_ok : status;
969}
970
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971/*
972 * NULL call.
973 */
Al Viro7111c662006-10-19 23:28:45 -0700974static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700975nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
976{
977 return nfs_ok;
978}
979
Shankar Anande2b20952006-07-10 04:45:44 -0700980static inline void nfsd4_increment_op_stats(u32 opnum)
981{
982 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
983 nfsdstats.nfs4_opcount[opnum]++;
984}
985
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800986typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
987 void *);
Andy Adamsonf9bb94c2009-04-03 08:28:12 +0300988enum nfsd4_op_flags {
989 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
Mi Jinlong5ece3ca2011-02-18 09:08:31 +0800990 ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */
991 ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */
J. Bruce Fields68d93182011-04-08 17:00:50 -0400992 /* For rfc 5661 section 2.6.3.1.1: */
993 OP_HANDLES_WRONGSEC = 1 << 3,
994 OP_IS_PUTFH_LIKE = 1 << 4,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +0300995};
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800996
997struct nfsd4_operation {
998 nfsd4op_func op_func;
999 u32 op_flags;
Benny Halevyb001a1b2008-07-02 11:15:03 +03001000 char *op_name;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001001};
1002
1003static struct nfsd4_operation nfsd4_ops[];
1004
Adrian Bunkf1c7f792008-08-08 19:26:42 +03001005static const char *nfsd4_op_name(unsigned opnum);
Benny Halevyb001a1b2008-07-02 11:15:03 +03001006
Linus Torvalds1da177e2005-04-16 15:20:36 -07001007/*
J. Bruce Fields57716352010-04-21 12:27:19 -04001008 * Enforce NFSv4.1 COMPOUND ordering rules:
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001009 *
J. Bruce Fields57716352010-04-21 12:27:19 -04001010 * Also note, enforced elsewhere:
1011 * - SEQUENCE other than as first op results in
1012 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001013 * - BIND_CONN_TO_SESSION must be the only op in its compound.
1014 * (Enforced in nfsd4_bind_conn_to_session().)
J. Bruce Fields57716352010-04-21 12:27:19 -04001015 * - DESTROY_SESSION must be the final operation in a compound, if
1016 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
1017 * (Enforced in nfsd4_destroy_session().)
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001018 */
J. Bruce Fields57716352010-04-21 12:27:19 -04001019static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args)
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001020{
J. Bruce Fields57716352010-04-21 12:27:19 -04001021 struct nfsd4_op *op = &args->ops[0];
1022
1023 /* These ordering requirements don't apply to NFSv4.0: */
1024 if (args->minorversion == 0)
1025 return nfs_ok;
1026 /* This is weird, but OK, not our problem: */
1027 if (args->opcnt == 0)
1028 return nfs_ok;
1029 if (op->status == nfserr_op_illegal)
1030 return nfs_ok;
1031 if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP))
1032 return nfserr_op_not_in_session;
1033 if (op->opnum == OP_SEQUENCE)
1034 return nfs_ok;
1035 if (args->opcnt != 1)
1036 return nfserr_not_only_op;
1037 return nfs_ok;
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001038}
1039
J. Bruce Fields22b03212011-04-09 11:23:24 -04001040static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op)
1041{
1042 return &nfsd4_ops[op->opnum];
1043}
1044
J. Bruce Fields68d93182011-04-08 17:00:50 -04001045static bool need_wrongsec_check(struct svc_rqst *rqstp)
1046{
1047 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1048 struct nfsd4_compoundargs *argp = rqstp->rq_argp;
1049 struct nfsd4_op *this = &argp->ops[resp->opcnt - 1];
1050 struct nfsd4_op *next = &argp->ops[resp->opcnt];
1051 struct nfsd4_operation *thisd;
1052 struct nfsd4_operation *nextd;
1053
1054 thisd = OPDESC(this);
1055 /*
1056 * Most ops check wronsec on our own; only the putfh-like ops
1057 * have special rules.
1058 */
1059 if (!(thisd->op_flags & OP_IS_PUTFH_LIKE))
1060 return false;
1061 /*
1062 * rfc 5661 2.6.3.1.1.6: don't bother erroring out a
1063 * put-filehandle operation if we're not going to use the
1064 * result:
1065 */
1066 if (argp->opcnt == resp->opcnt)
1067 return false;
1068
1069 nextd = OPDESC(next);
1070 /*
1071 * Rest of 2.6.3.1.1: certain operations will return WRONGSEC
1072 * errors themselves as necessary; others should check for them
1073 * now:
1074 */
1075 return !(nextd->op_flags & OP_HANDLES_WRONGSEC);
1076}
1077
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001078/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001079 * COMPOUND call.
1080 */
Al Viro7111c662006-10-19 23:28:45 -07001081static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -07001082nfsd4_proc_compound(struct svc_rqst *rqstp,
1083 struct nfsd4_compoundargs *args,
1084 struct nfsd4_compoundres *resp)
1085{
1086 struct nfsd4_op *op;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001087 struct nfsd4_operation *opdesc;
Andy Adamsone354d572009-03-28 11:30:52 +03001088 struct nfsd4_compound_state *cstate = &resp->cstate;
J.Bruce Fieldse5710192006-12-13 00:35:20 -08001089 int slack_bytes;
Al Virob37ad282006-10-19 23:28:59 -07001090 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001091
Linus Torvalds1da177e2005-04-16 15:20:36 -07001092 resp->xbuf = &rqstp->rq_res;
Andy Adamsone354d572009-03-28 11:30:52 +03001093 resp->p = rqstp->rq_res.head[0].iov_base +
1094 rqstp->rq_res.head[0].iov_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001095 resp->tagp = resp->p;
1096 /* reserve space for: taglen, tag, and opcnt */
1097 resp->p += 2 + XDR_QUADLEN(args->taglen);
1098 resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
1099 resp->taglen = args->taglen;
1100 resp->tag = args->tag;
1101 resp->opcnt = 0;
1102 resp->rqstp = rqstp;
Andy Adamsond87a8ad2009-04-03 08:28:53 +03001103 resp->cstate.minorversion = args->minorversion;
Andy Adamsone354d572009-03-28 11:30:52 +03001104 resp->cstate.replay_owner = NULL;
J. Bruce Fields26c0c752010-04-24 15:35:43 -04001105 resp->cstate.session = NULL;
Andy Adamsone354d572009-03-28 11:30:52 +03001106 fh_init(&resp->cstate.current_fh, NFS4_FHSIZE);
1107 fh_init(&resp->cstate.save_fh, NFS4_FHSIZE);
NeilBrown8ff30fa2010-08-12 17:04:07 +10001108 /*
1109 * Don't use the deferral mechanism for NFSv4; compounds make it
1110 * too hard to avoid non-idempotency problems.
1111 */
1112 rqstp->rq_usedeferral = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001113
1114 /*
1115 * According to RFC3010, this takes precedence over all other errors.
1116 */
1117 status = nfserr_minor_vers_mismatch;
Benny Halevy8daf2202009-04-03 08:28:59 +03001118 if (args->minorversion > nfsd_supported_minorversion)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001119 goto out;
1120
J. Bruce Fields57716352010-04-21 12:27:19 -04001121 status = nfs41_check_op_ordering(args);
1122 if (status) {
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001123 op = &args->ops[0];
J. Bruce Fields57716352010-04-21 12:27:19 -04001124 op->status = status;
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001125 goto encode_op;
1126 }
1127
Linus Torvalds1da177e2005-04-16 15:20:36 -07001128 while (!status && resp->opcnt < args->opcnt) {
1129 op = &args->ops[resp->opcnt++];
1130
Benny Halevyb001a1b2008-07-02 11:15:03 +03001131 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
1132 resp->opcnt, args->opcnt, op->opnum,
1133 nfsd4_op_name(op->opnum));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001134 /*
1135 * The XDR decode routines may have pre-set op->status;
1136 * for example, if there is a miscellaneous XDR error
1137 * it will be set to nfserr_bad_xdr.
1138 */
1139 if (op->status)
1140 goto encode_op;
1141
1142 /* We must be able to encode a successful response to
1143 * this operation, with enough room left over to encode a
1144 * failed response to the next operation. If we don't
1145 * have enough room, fail with ERR_RESOURCE.
1146 */
J.Bruce Fieldse5710192006-12-13 00:35:20 -08001147 slack_bytes = (char *)resp->end - (char *)resp->p;
1148 if (slack_bytes < COMPOUND_SLACK_SPACE
1149 + COMPOUND_ERR_SLACK_SPACE) {
1150 BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001151 op->status = nfserr_resource;
1152 goto encode_op;
1153 }
1154
J. Bruce Fields22b03212011-04-09 11:23:24 -04001155 opdesc = OPDESC(op);
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001156
J.Bruce Fieldsca364312006-12-13 00:35:27 -08001157 if (!cstate->current_fh.fh_dentry) {
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001158 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -07001159 op->status = nfserr_nofilehandle;
1160 goto encode_op;
1161 }
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001162 } else if (cstate->current_fh.fh_export->ex_fslocs.migrated &&
1163 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -07001164 op->status = nfserr_moved;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001165 goto encode_op;
1166 }
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001167
1168 if (opdesc->op_func)
1169 op->status = opdesc->op_func(rqstp, cstate, &op->u);
1170 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07001171 BUG_ON(op->status == nfs_ok);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001172
J. Bruce Fields68d93182011-04-08 17:00:50 -04001173 if (!op->status && need_wrongsec_check(rqstp))
1174 op->status = check_nfsd_access(cstate->current_fh.fh_export, rqstp);
1175
Linus Torvalds1da177e2005-04-16 15:20:36 -07001176encode_op:
Andy Adamson49557cc2009-07-23 19:02:16 -04001177 /* Only from SEQUENCE */
Andy Adamsonda3846a2009-04-03 08:28:22 +03001178 if (resp->cstate.status == nfserr_replay_cache) {
1179 dprintk("%s NFS4.1 replay from cache\n", __func__);
Andy Adamsonabfabf82009-07-23 19:02:18 -04001180 status = op->status;
Andy Adamsonda3846a2009-04-03 08:28:22 +03001181 goto out;
1182 }
Al Viroa90b0612006-10-19 23:29:03 -07001183 if (op->status == nfserr_replay_me) {
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001184 op->replay = &cstate->replay_owner->so_replay;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001185 nfsd4_encode_replay(resp, op);
1186 status = op->status = op->replay->rp_status;
1187 } else {
1188 nfsd4_encode_operation(resp, op);
1189 status = op->status;
1190 }
Benny Halevy04077172008-12-15 19:40:49 +02001191
1192 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
1193 args->ops, args->opcnt, resp->opcnt, op->opnum,
1194 be32_to_cpu(status));
1195
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001196 if (cstate->replay_owner) {
1197 nfs4_put_stateowner(cstate->replay_owner);
1198 cstate->replay_owner = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001199 }
NeilBrown7e06b7f2005-06-23 22:03:13 -07001200 /* XXX Ugh, we need to get rid of this kind of special case: */
1201 if (op->opnum == OP_READ && op->u.read.rd_filp)
1202 fput(op->u.read.rd_filp);
Shankar Anande2b20952006-07-10 04:45:44 -07001203
1204 nfsd4_increment_op_stats(op->opnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001205 }
1206
Andy Adamsonda3846a2009-04-03 08:28:22 +03001207 resp->cstate.status = status;
Andy Adamsone354d572009-03-28 11:30:52 +03001208 fh_put(&resp->cstate.current_fh);
1209 fh_put(&resp->cstate.save_fh);
1210 BUG_ON(resp->cstate.replay_owner);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001211out:
1212 nfsd4_release_compoundargs(args);
Andy Adamson2f425872009-04-03 08:27:32 +03001213 /* Reset deferral mechanism for RPC deferrals */
1214 rqstp->rq_usedeferral = 1;
J. Bruce Fields3b12cd92008-05-05 17:17:44 -04001215 dprintk("nfsv4 compound returned %d\n", ntohl(status));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001216 return status;
1217}
1218
Benny Halevy20766012009-03-28 11:32:05 +03001219static struct nfsd4_operation nfsd4_ops[] = {
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001220 [OP_ACCESS] = {
1221 .op_func = (nfsd4op_func)nfsd4_access,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001222 .op_name = "OP_ACCESS",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001223 },
1224 [OP_CLOSE] = {
1225 .op_func = (nfsd4op_func)nfsd4_close,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001226 .op_name = "OP_CLOSE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001227 },
1228 [OP_COMMIT] = {
1229 .op_func = (nfsd4op_func)nfsd4_commit,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001230 .op_name = "OP_COMMIT",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001231 },
1232 [OP_CREATE] = {
1233 .op_func = (nfsd4op_func)nfsd4_create,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001234 .op_name = "OP_CREATE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001235 },
1236 [OP_DELEGRETURN] = {
1237 .op_func = (nfsd4op_func)nfsd4_delegreturn,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001238 .op_name = "OP_DELEGRETURN",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001239 },
1240 [OP_GETATTR] = {
1241 .op_func = (nfsd4op_func)nfsd4_getattr,
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001242 .op_flags = ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001243 .op_name = "OP_GETATTR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001244 },
1245 [OP_GETFH] = {
1246 .op_func = (nfsd4op_func)nfsd4_getfh,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001247 .op_name = "OP_GETFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001248 },
1249 [OP_LINK] = {
1250 .op_func = (nfsd4op_func)nfsd4_link,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001251 .op_name = "OP_LINK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001252 },
1253 [OP_LOCK] = {
1254 .op_func = (nfsd4op_func)nfsd4_lock,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001255 .op_name = "OP_LOCK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001256 },
1257 [OP_LOCKT] = {
1258 .op_func = (nfsd4op_func)nfsd4_lockt,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001259 .op_name = "OP_LOCKT",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001260 },
1261 [OP_LOCKU] = {
1262 .op_func = (nfsd4op_func)nfsd4_locku,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001263 .op_name = "OP_LOCKU",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001264 },
1265 [OP_LOOKUP] = {
1266 .op_func = (nfsd4op_func)nfsd4_lookup,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001267 .op_flags = OP_HANDLES_WRONGSEC,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001268 .op_name = "OP_LOOKUP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001269 },
1270 [OP_LOOKUPP] = {
1271 .op_func = (nfsd4op_func)nfsd4_lookupp,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001272 .op_flags = OP_HANDLES_WRONGSEC,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001273 .op_name = "OP_LOOKUPP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001274 },
1275 [OP_NVERIFY] = {
1276 .op_func = (nfsd4op_func)nfsd4_nverify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001277 .op_name = "OP_NVERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001278 },
1279 [OP_OPEN] = {
1280 .op_func = (nfsd4op_func)nfsd4_open,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001281 .op_flags = OP_HANDLES_WRONGSEC,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001282 .op_name = "OP_OPEN",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001283 },
1284 [OP_OPEN_CONFIRM] = {
1285 .op_func = (nfsd4op_func)nfsd4_open_confirm,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001286 .op_name = "OP_OPEN_CONFIRM",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001287 },
1288 [OP_OPEN_DOWNGRADE] = {
1289 .op_func = (nfsd4op_func)nfsd4_open_downgrade,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001290 .op_name = "OP_OPEN_DOWNGRADE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001291 },
1292 [OP_PUTFH] = {
1293 .op_func = (nfsd4op_func)nfsd4_putfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001294 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1295 | OP_IS_PUTFH_LIKE,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001296 .op_name = "OP_PUTFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001297 },
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001298 [OP_PUTPUBFH] = {
J. Bruce Fieldsa1c8c4d2009-03-09 12:17:29 -04001299 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001300 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1301 | OP_IS_PUTFH_LIKE,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001302 .op_name = "OP_PUTPUBFH",
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001303 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001304 [OP_PUTROOTFH] = {
1305 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001306 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1307 | OP_IS_PUTFH_LIKE,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001308 .op_name = "OP_PUTROOTFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001309 },
1310 [OP_READ] = {
1311 .op_func = (nfsd4op_func)nfsd4_read,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001312 .op_name = "OP_READ",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001313 },
1314 [OP_READDIR] = {
1315 .op_func = (nfsd4op_func)nfsd4_readdir,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001316 .op_name = "OP_READDIR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001317 },
1318 [OP_READLINK] = {
1319 .op_func = (nfsd4op_func)nfsd4_readlink,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001320 .op_name = "OP_READLINK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001321 },
1322 [OP_REMOVE] = {
1323 .op_func = (nfsd4op_func)nfsd4_remove,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001324 .op_name = "OP_REMOVE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001325 },
1326 [OP_RENAME] = {
Benny Halevyb001a1b2008-07-02 11:15:03 +03001327 .op_name = "OP_RENAME",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001328 .op_func = (nfsd4op_func)nfsd4_rename,
1329 },
1330 [OP_RENEW] = {
1331 .op_func = (nfsd4op_func)nfsd4_renew,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001332 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001333 .op_name = "OP_RENEW",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001334 },
1335 [OP_RESTOREFH] = {
1336 .op_func = (nfsd4op_func)nfsd4_restorefh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001337 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1338 | OP_IS_PUTFH_LIKE,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001339 .op_name = "OP_RESTOREFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001340 },
1341 [OP_SAVEFH] = {
1342 .op_func = (nfsd4op_func)nfsd4_savefh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001343 .op_flags = OP_HANDLES_WRONGSEC,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001344 .op_name = "OP_SAVEFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001345 },
Andy Adamsondcb488a2007-07-17 04:04:51 -07001346 [OP_SECINFO] = {
1347 .op_func = (nfsd4op_func)nfsd4_secinfo,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001348 .op_flags = OP_HANDLES_WRONGSEC,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001349 .op_name = "OP_SECINFO",
Andy Adamsondcb488a2007-07-17 04:04:51 -07001350 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001351 [OP_SETATTR] = {
1352 .op_func = (nfsd4op_func)nfsd4_setattr,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001353 .op_name = "OP_SETATTR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001354 },
1355 [OP_SETCLIENTID] = {
1356 .op_func = (nfsd4op_func)nfsd4_setclientid,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001357 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001358 .op_name = "OP_SETCLIENTID",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001359 },
1360 [OP_SETCLIENTID_CONFIRM] = {
1361 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001362 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001363 .op_name = "OP_SETCLIENTID_CONFIRM",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001364 },
1365 [OP_VERIFY] = {
1366 .op_func = (nfsd4op_func)nfsd4_verify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001367 .op_name = "OP_VERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001368 },
1369 [OP_WRITE] = {
1370 .op_func = (nfsd4op_func)nfsd4_write,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001371 .op_name = "OP_WRITE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001372 },
1373 [OP_RELEASE_LOCKOWNER] = {
1374 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001375 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001376 .op_name = "OP_RELEASE_LOCKOWNER",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001377 },
Andy Adamson069b6ad2009-04-03 08:27:58 +03001378
1379 /* NFSv4.1 operations */
1380 [OP_EXCHANGE_ID] = {
1381 .op_func = (nfsd4op_func)nfsd4_exchange_id,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001382 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001383 .op_name = "OP_EXCHANGE_ID",
1384 },
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001385 [OP_BIND_CONN_TO_SESSION] = {
1386 .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session,
1387 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
1388 .op_name = "OP_BIND_CONN_TO_SESSION",
1389 },
Andy Adamson069b6ad2009-04-03 08:27:58 +03001390 [OP_CREATE_SESSION] = {
1391 .op_func = (nfsd4op_func)nfsd4_create_session,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001392 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001393 .op_name = "OP_CREATE_SESSION",
1394 },
1395 [OP_DESTROY_SESSION] = {
1396 .op_func = (nfsd4op_func)nfsd4_destroy_session,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001397 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001398 .op_name = "OP_DESTROY_SESSION",
1399 },
1400 [OP_SEQUENCE] = {
1401 .op_func = (nfsd4op_func)nfsd4_sequence,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001402 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001403 .op_name = "OP_SEQUENCE",
1404 },
J. Bruce Fields4dc6ec02010-04-19 15:11:28 -04001405 [OP_RECLAIM_COMPLETE] = {
1406 .op_func = (nfsd4op_func)nfsd4_reclaim_complete,
1407 .op_flags = ALLOWED_WITHOUT_FH,
1408 .op_name = "OP_RECLAIM_COMPLETE",
1409 },
J. Bruce Fields04f4ad12010-12-16 09:51:13 -05001410 [OP_SECINFO_NO_NAME] = {
1411 .op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001412 .op_flags = OP_HANDLES_WRONGSEC,
J. Bruce Fields04f4ad12010-12-16 09:51:13 -05001413 .op_name = "OP_SECINFO_NO_NAME",
1414 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001415};
1416
Adrian Bunkf1c7f792008-08-08 19:26:42 +03001417static const char *nfsd4_op_name(unsigned opnum)
Benny Halevyb001a1b2008-07-02 11:15:03 +03001418{
1419 if (opnum < ARRAY_SIZE(nfsd4_ops))
1420 return nfsd4_ops[opnum].op_name;
1421 return "unknown_operation";
1422}
1423
Linus Torvalds1da177e2005-04-16 15:20:36 -07001424#define nfsd4_voidres nfsd4_voidargs
Linus Torvalds1da177e2005-04-16 15:20:36 -07001425struct nfsd4_voidargs { int dummy; };
1426
Linus Torvalds1da177e2005-04-16 15:20:36 -07001427/*
1428 * TODO: At the present time, the NFSv4 server does not do XID caching
1429 * of requests. Implementing XID caching would not be a serious problem,
1430 * although it would require a mild change in interfaces since one
1431 * doesn't know whether an NFSv4 request is idempotent until after the
1432 * XDR decode. However, XID caching totally confuses pynfs (Peter
1433 * Astrand's regression testsuite for NFSv4 servers), which reuses
1434 * XID's liberally, so I've left it unimplemented until pynfs generates
1435 * better XID's.
1436 */
1437static struct svc_procedure nfsd_procedures4[2] = {
Yu Zhiguo0a93a472009-05-19 14:09:54 +08001438 [NFSPROC4_NULL] = {
1439 .pc_func = (svc_procfunc) nfsd4_proc_null,
1440 .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
1441 .pc_argsize = sizeof(struct nfsd4_voidargs),
1442 .pc_ressize = sizeof(struct nfsd4_voidres),
1443 .pc_cachetype = RC_NOCACHE,
1444 .pc_xdrressize = 1,
1445 },
1446 [NFSPROC4_COMPOUND] = {
1447 .pc_func = (svc_procfunc) nfsd4_proc_compound,
1448 .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
1449 .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
1450 .pc_argsize = sizeof(struct nfsd4_compoundargs),
1451 .pc_ressize = sizeof(struct nfsd4_compoundres),
1452 .pc_cachetype = RC_NOCACHE,
1453 .pc_xdrressize = NFSD_BUFSIZE/4,
1454 },
Linus Torvalds1da177e2005-04-16 15:20:36 -07001455};
1456
1457struct svc_version nfsd_version4 = {
1458 .vs_vers = 4,
1459 .vs_nproc = 2,
1460 .vs_proc = nfsd_procedures4,
1461 .vs_dispatch = nfsd_dispatch,
1462 .vs_xdrsize = NFS4_SVC_XDRSIZE,
1463};
1464
1465/*
1466 * Local variables:
1467 * c-basic-offset: 8
1468 * End:
1469 */