blob: 5fcb1396a7e324ada8f3cf639f2e6c025ca9a689 [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
199 * in NFSv4 as in v3.
200 */
201 status = nfsd_create_v3(rqstp, current_fh, open->op_fname.data,
202 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);
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200406 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
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);
765 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
766 secinfo->si_name, secinfo->si_namelen,
767 &exp, &dentry);
768 if (err)
769 return err;
770 if (dentry->d_inode == NULL) {
771 exp_put(exp);
772 err = nfserr_noent;
773 } else
774 secinfo->si_exp = exp;
775 dput(dentry);
J. Bruce Fields56560b92010-12-16 09:57:15 -0500776 if (cstate->minorversion)
777 /* See rfc 5661 section 2.6.3.1.1.8 */
778 fh_put(&cstate->current_fh);
Andy Adamsondcb488a2007-07-17 04:04:51 -0700779 return err;
780}
781
782static __be32
J. Bruce Fields04f4ad12010-12-16 09:51:13 -0500783nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
784 struct nfsd4_secinfo_no_name *sin)
785{
786 __be32 err;
787
788 switch (sin->sin_style) {
789 case NFS4_SECINFO_STYLE4_CURRENT_FH:
790 break;
791 case NFS4_SECINFO_STYLE4_PARENT:
792 err = nfsd4_do_lookupp(rqstp, &cstate->current_fh);
793 if (err)
794 return err;
795 break;
796 default:
797 return nfserr_inval;
798 }
799 exp_get(cstate->current_fh.fh_export);
800 sin->sin_exp = cstate->current_fh.fh_export;
801 fh_put(&cstate->current_fh);
802 return nfs_ok;
803}
804
805static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800806nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
807 struct nfsd4_setattr *setattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700808{
Al Virob37ad282006-10-19 23:28:59 -0700809 __be32 status = nfs_ok;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810
Linus Torvalds1da177e2005-04-16 15:20:36 -0700811 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
812 nfs4_lock_state();
Benny Halevydd453df2009-04-03 08:28:41 +0300813 status = nfs4_preprocess_stateid_op(cstate,
J. Bruce Fields6150ef02009-02-21 13:36:16 -0800814 &setattr->sa_stateid, WR_STATE, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700815 nfs4_unlock_state();
J. Bruce Fields375c5542006-01-18 17:43:33 -0800816 if (status) {
Greg Banks3e3b4802006-10-02 02:17:41 -0700817 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
J. Bruce Fields375c5542006-01-18 17:43:33 -0800818 return status;
819 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820 }
Dave Hansen18f335a2008-02-15 14:37:38 -0800821 status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt);
822 if (status)
823 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700824 status = nfs_ok;
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800825
826 status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
827 nfsd_attrmask);
828 if (status)
829 goto out;
830
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831 if (setattr->sa_acl != NULL)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800832 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
833 setattr->sa_acl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834 if (status)
Dave Hansen18f335a2008-02-15 14:37:38 -0800835 goto out;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800836 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837 0, (time_t)0);
Dave Hansen18f335a2008-02-15 14:37:38 -0800838out:
839 mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840 return status;
841}
842
J.Bruce Fields71911552006-12-13 00:35:29 -0800843static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800844nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
845 struct nfsd4_write *write)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846{
847 stateid_t *stateid = &write->wr_stateid;
848 struct file *filp = NULL;
849 u32 *p;
Al Virob37ad282006-10-19 23:28:59 -0700850 __be32 status = nfs_ok;
David Shaw31dec252009-03-05 20:16:14 -0500851 unsigned long cnt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852
853 /* no need to check permission - this will be done in nfsd_write() */
854
855 if (write->wr_offset >= OFFSET_MAX)
856 return nfserr_inval;
857
858 nfs4_lock_state();
Benny Halevydd453df2009-04-03 08:28:41 +0300859 status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp);
NeilBrown7e06b7f2005-06-23 22:03:13 -0700860 if (filp)
861 get_file(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700862 nfs4_unlock_state();
863
J. Bruce Fields375c5542006-01-18 17:43:33 -0800864 if (status) {
865 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
866 return status;
867 }
868
David Shaw31dec252009-03-05 20:16:14 -0500869 cnt = write->wr_buflen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870 write->wr_how_written = write->wr_stable_how;
871 p = (u32 *)write->wr_verifier.data;
872 *p++ = nfssvc_boot.tv_sec;
873 *p++ = nfssvc_boot.tv_usec;
874
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800875 status = nfsd_write(rqstp, &cstate->current_fh, filp,
876 write->wr_offset, rqstp->rq_vec, write->wr_vlen,
David Shaw31dec252009-03-05 20:16:14 -0500877 &cnt, &write->wr_how_written);
NeilBrown7e06b7f2005-06-23 22:03:13 -0700878 if (filp)
879 fput(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880
David Shaw31dec252009-03-05 20:16:14 -0500881 write->wr_bytes_written = cnt;
882
Linus Torvalds1da177e2005-04-16 15:20:36 -0700883 if (status == nfserr_symlink)
884 status = nfserr_inval;
885 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886}
887
888/* This routine never returns NFS_OK! If there are no other errors, it
889 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
890 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
891 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
892 */
Al Virob37ad282006-10-19 23:28:59 -0700893static __be32
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -0800894_nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800895 struct nfsd4_verify *verify)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896{
Al Viro2ebbc012006-10-19 23:28:58 -0700897 __be32 *buf, *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898 int count;
Al Virob37ad282006-10-19 23:28:59 -0700899 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700900
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200901 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902 if (status)
903 return status;
904
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800905 status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
906 if (status)
907 return status;
908
Linus Torvalds1da177e2005-04-16 15:20:36 -0700909 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
910 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
911 return nfserr_inval;
912 if (verify->ve_attrlen & 3)
913 return nfserr_inval;
914
915 /* count in words:
916 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
917 */
918 count = 4 + (verify->ve_attrlen >> 2);
919 buf = kmalloc(count << 2, GFP_KERNEL);
920 if (!buf)
921 return nfserr_resource;
922
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800923 status = nfsd4_encode_fattr(&cstate->current_fh,
924 cstate->current_fh.fh_export,
925 cstate->current_fh.fh_dentry, buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700926 &count, verify->ve_bmval,
Frank Filz406a7ea2007-11-27 11:34:05 -0800927 rqstp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700928
929 /* this means that nfsd4_encode_fattr() ran out of space */
930 if (status == nfserr_resource && count == 0)
931 status = nfserr_not_same;
932 if (status)
933 goto out_kfree;
934
Benny Halevy95ec28c2009-04-03 08:29:08 +0300935 /* skip bitmap */
936 p = buf + 1 + ntohl(buf[0]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700937 status = nfserr_not_same;
938 if (ntohl(*p++) != verify->ve_attrlen)
939 goto out_kfree;
940 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
941 status = nfserr_same;
942
943out_kfree:
944 kfree(buf);
945 return status;
946}
947
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -0800948static __be32
949nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
950 struct nfsd4_verify *verify)
951{
952 __be32 status;
953
954 status = _nfsd4_verify(rqstp, cstate, verify);
955 return status == nfserr_not_same ? nfs_ok : status;
956}
957
958static __be32
959nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
960 struct nfsd4_verify *verify)
961{
962 __be32 status;
963
964 status = _nfsd4_verify(rqstp, cstate, verify);
965 return status == nfserr_same ? nfs_ok : status;
966}
967
Linus Torvalds1da177e2005-04-16 15:20:36 -0700968/*
969 * NULL call.
970 */
Al Viro7111c662006-10-19 23:28:45 -0700971static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700972nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
973{
974 return nfs_ok;
975}
976
Shankar Anande2b20952006-07-10 04:45:44 -0700977static inline void nfsd4_increment_op_stats(u32 opnum)
978{
979 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
980 nfsdstats.nfs4_opcount[opnum]++;
981}
982
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800983typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
984 void *);
Andy Adamsonf9bb94c2009-04-03 08:28:12 +0300985enum nfsd4_op_flags {
986 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
Mi Jinlong5ece3ca2011-02-18 09:08:31 +0800987 ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */
988 ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */
Andy Adamsonf9bb94c2009-04-03 08:28:12 +0300989};
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800990
991struct nfsd4_operation {
992 nfsd4op_func op_func;
993 u32 op_flags;
Benny Halevyb001a1b2008-07-02 11:15:03 +0300994 char *op_name;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800995};
996
997static struct nfsd4_operation nfsd4_ops[];
998
Adrian Bunkf1c7f792008-08-08 19:26:42 +0300999static const char *nfsd4_op_name(unsigned opnum);
Benny Halevyb001a1b2008-07-02 11:15:03 +03001000
Linus Torvalds1da177e2005-04-16 15:20:36 -07001001/*
J. Bruce Fields57716352010-04-21 12:27:19 -04001002 * Enforce NFSv4.1 COMPOUND ordering rules:
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001003 *
J. Bruce Fields57716352010-04-21 12:27:19 -04001004 * Also note, enforced elsewhere:
1005 * - SEQUENCE other than as first op results in
1006 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001007 * - BIND_CONN_TO_SESSION must be the only op in its compound.
1008 * (Enforced in nfsd4_bind_conn_to_session().)
J. Bruce Fields57716352010-04-21 12:27:19 -04001009 * - DESTROY_SESSION must be the final operation in a compound, if
1010 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
1011 * (Enforced in nfsd4_destroy_session().)
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001012 */
J. Bruce Fields57716352010-04-21 12:27:19 -04001013static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args)
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001014{
J. Bruce Fields57716352010-04-21 12:27:19 -04001015 struct nfsd4_op *op = &args->ops[0];
1016
1017 /* These ordering requirements don't apply to NFSv4.0: */
1018 if (args->minorversion == 0)
1019 return nfs_ok;
1020 /* This is weird, but OK, not our problem: */
1021 if (args->opcnt == 0)
1022 return nfs_ok;
1023 if (op->status == nfserr_op_illegal)
1024 return nfs_ok;
1025 if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP))
1026 return nfserr_op_not_in_session;
1027 if (op->opnum == OP_SEQUENCE)
1028 return nfs_ok;
1029 if (args->opcnt != 1)
1030 return nfserr_not_only_op;
1031 return nfs_ok;
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001032}
1033
1034/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001035 * COMPOUND call.
1036 */
Al Viro7111c662006-10-19 23:28:45 -07001037static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -07001038nfsd4_proc_compound(struct svc_rqst *rqstp,
1039 struct nfsd4_compoundargs *args,
1040 struct nfsd4_compoundres *resp)
1041{
1042 struct nfsd4_op *op;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001043 struct nfsd4_operation *opdesc;
Andy Adamsone354d572009-03-28 11:30:52 +03001044 struct nfsd4_compound_state *cstate = &resp->cstate;
J.Bruce Fieldse5710192006-12-13 00:35:20 -08001045 int slack_bytes;
Al Virob37ad282006-10-19 23:28:59 -07001046 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001047
Linus Torvalds1da177e2005-04-16 15:20:36 -07001048 resp->xbuf = &rqstp->rq_res;
Andy Adamsone354d572009-03-28 11:30:52 +03001049 resp->p = rqstp->rq_res.head[0].iov_base +
1050 rqstp->rq_res.head[0].iov_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001051 resp->tagp = resp->p;
1052 /* reserve space for: taglen, tag, and opcnt */
1053 resp->p += 2 + XDR_QUADLEN(args->taglen);
1054 resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
1055 resp->taglen = args->taglen;
1056 resp->tag = args->tag;
1057 resp->opcnt = 0;
1058 resp->rqstp = rqstp;
Andy Adamsond87a8ad2009-04-03 08:28:53 +03001059 resp->cstate.minorversion = args->minorversion;
Andy Adamsone354d572009-03-28 11:30:52 +03001060 resp->cstate.replay_owner = NULL;
J. Bruce Fields26c0c752010-04-24 15:35:43 -04001061 resp->cstate.session = NULL;
Andy Adamsone354d572009-03-28 11:30:52 +03001062 fh_init(&resp->cstate.current_fh, NFS4_FHSIZE);
1063 fh_init(&resp->cstate.save_fh, NFS4_FHSIZE);
NeilBrown8ff30fa2010-08-12 17:04:07 +10001064 /*
1065 * Don't use the deferral mechanism for NFSv4; compounds make it
1066 * too hard to avoid non-idempotency problems.
1067 */
1068 rqstp->rq_usedeferral = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001069
1070 /*
1071 * According to RFC3010, this takes precedence over all other errors.
1072 */
1073 status = nfserr_minor_vers_mismatch;
Benny Halevy8daf2202009-04-03 08:28:59 +03001074 if (args->minorversion > nfsd_supported_minorversion)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001075 goto out;
1076
J. Bruce Fields57716352010-04-21 12:27:19 -04001077 status = nfs41_check_op_ordering(args);
1078 if (status) {
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001079 op = &args->ops[0];
J. Bruce Fields57716352010-04-21 12:27:19 -04001080 op->status = status;
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001081 goto encode_op;
1082 }
1083
Linus Torvalds1da177e2005-04-16 15:20:36 -07001084 while (!status && resp->opcnt < args->opcnt) {
1085 op = &args->ops[resp->opcnt++];
1086
Benny Halevyb001a1b2008-07-02 11:15:03 +03001087 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
1088 resp->opcnt, args->opcnt, op->opnum,
1089 nfsd4_op_name(op->opnum));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001090 /*
1091 * The XDR decode routines may have pre-set op->status;
1092 * for example, if there is a miscellaneous XDR error
1093 * it will be set to nfserr_bad_xdr.
1094 */
1095 if (op->status)
1096 goto encode_op;
1097
1098 /* We must be able to encode a successful response to
1099 * this operation, with enough room left over to encode a
1100 * failed response to the next operation. If we don't
1101 * have enough room, fail with ERR_RESOURCE.
1102 */
J.Bruce Fieldse5710192006-12-13 00:35:20 -08001103 slack_bytes = (char *)resp->end - (char *)resp->p;
1104 if (slack_bytes < COMPOUND_SLACK_SPACE
1105 + COMPOUND_ERR_SLACK_SPACE) {
1106 BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001107 op->status = nfserr_resource;
1108 goto encode_op;
1109 }
1110
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001111 opdesc = &nfsd4_ops[op->opnum];
1112
J.Bruce Fieldsca364312006-12-13 00:35:27 -08001113 if (!cstate->current_fh.fh_dentry) {
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001114 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -07001115 op->status = nfserr_nofilehandle;
1116 goto encode_op;
1117 }
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001118 } else if (cstate->current_fh.fh_export->ex_fslocs.migrated &&
1119 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -07001120 op->status = nfserr_moved;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001121 goto encode_op;
1122 }
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001123
1124 if (opdesc->op_func)
1125 op->status = opdesc->op_func(rqstp, cstate, &op->u);
1126 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07001127 BUG_ON(op->status == nfs_ok);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001128
1129encode_op:
Andy Adamson49557cc2009-07-23 19:02:16 -04001130 /* Only from SEQUENCE */
Andy Adamsonda3846a2009-04-03 08:28:22 +03001131 if (resp->cstate.status == nfserr_replay_cache) {
1132 dprintk("%s NFS4.1 replay from cache\n", __func__);
Andy Adamsonabfabf82009-07-23 19:02:18 -04001133 status = op->status;
Andy Adamsonda3846a2009-04-03 08:28:22 +03001134 goto out;
1135 }
Al Viroa90b0612006-10-19 23:29:03 -07001136 if (op->status == nfserr_replay_me) {
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001137 op->replay = &cstate->replay_owner->so_replay;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001138 nfsd4_encode_replay(resp, op);
1139 status = op->status = op->replay->rp_status;
1140 } else {
1141 nfsd4_encode_operation(resp, op);
1142 status = op->status;
1143 }
Benny Halevy04077172008-12-15 19:40:49 +02001144
1145 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
1146 args->ops, args->opcnt, resp->opcnt, op->opnum,
1147 be32_to_cpu(status));
1148
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001149 if (cstate->replay_owner) {
1150 nfs4_put_stateowner(cstate->replay_owner);
1151 cstate->replay_owner = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001152 }
NeilBrown7e06b7f2005-06-23 22:03:13 -07001153 /* XXX Ugh, we need to get rid of this kind of special case: */
1154 if (op->opnum == OP_READ && op->u.read.rd_filp)
1155 fput(op->u.read.rd_filp);
Shankar Anande2b20952006-07-10 04:45:44 -07001156
1157 nfsd4_increment_op_stats(op->opnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001158 }
1159
Andy Adamsonda3846a2009-04-03 08:28:22 +03001160 resp->cstate.status = status;
Andy Adamsone354d572009-03-28 11:30:52 +03001161 fh_put(&resp->cstate.current_fh);
1162 fh_put(&resp->cstate.save_fh);
1163 BUG_ON(resp->cstate.replay_owner);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001164out:
1165 nfsd4_release_compoundargs(args);
Andy Adamson2f425872009-04-03 08:27:32 +03001166 /* Reset deferral mechanism for RPC deferrals */
1167 rqstp->rq_usedeferral = 1;
J. Bruce Fields3b12cd92008-05-05 17:17:44 -04001168 dprintk("nfsv4 compound returned %d\n", ntohl(status));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001169 return status;
1170}
1171
Benny Halevy20766012009-03-28 11:32:05 +03001172static struct nfsd4_operation nfsd4_ops[] = {
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001173 [OP_ACCESS] = {
1174 .op_func = (nfsd4op_func)nfsd4_access,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001175 .op_name = "OP_ACCESS",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001176 },
1177 [OP_CLOSE] = {
1178 .op_func = (nfsd4op_func)nfsd4_close,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001179 .op_name = "OP_CLOSE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001180 },
1181 [OP_COMMIT] = {
1182 .op_func = (nfsd4op_func)nfsd4_commit,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001183 .op_name = "OP_COMMIT",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001184 },
1185 [OP_CREATE] = {
1186 .op_func = (nfsd4op_func)nfsd4_create,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001187 .op_name = "OP_CREATE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001188 },
1189 [OP_DELEGRETURN] = {
1190 .op_func = (nfsd4op_func)nfsd4_delegreturn,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001191 .op_name = "OP_DELEGRETURN",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001192 },
1193 [OP_GETATTR] = {
1194 .op_func = (nfsd4op_func)nfsd4_getattr,
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001195 .op_flags = ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001196 .op_name = "OP_GETATTR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001197 },
1198 [OP_GETFH] = {
1199 .op_func = (nfsd4op_func)nfsd4_getfh,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001200 .op_name = "OP_GETFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001201 },
1202 [OP_LINK] = {
1203 .op_func = (nfsd4op_func)nfsd4_link,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001204 .op_name = "OP_LINK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001205 },
1206 [OP_LOCK] = {
1207 .op_func = (nfsd4op_func)nfsd4_lock,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001208 .op_name = "OP_LOCK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001209 },
1210 [OP_LOCKT] = {
1211 .op_func = (nfsd4op_func)nfsd4_lockt,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001212 .op_name = "OP_LOCKT",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001213 },
1214 [OP_LOCKU] = {
1215 .op_func = (nfsd4op_func)nfsd4_locku,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001216 .op_name = "OP_LOCKU",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001217 },
1218 [OP_LOOKUP] = {
1219 .op_func = (nfsd4op_func)nfsd4_lookup,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001220 .op_name = "OP_LOOKUP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001221 },
1222 [OP_LOOKUPP] = {
1223 .op_func = (nfsd4op_func)nfsd4_lookupp,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001224 .op_name = "OP_LOOKUPP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001225 },
1226 [OP_NVERIFY] = {
1227 .op_func = (nfsd4op_func)nfsd4_nverify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001228 .op_name = "OP_NVERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001229 },
1230 [OP_OPEN] = {
1231 .op_func = (nfsd4op_func)nfsd4_open,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001232 .op_name = "OP_OPEN",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001233 },
1234 [OP_OPEN_CONFIRM] = {
1235 .op_func = (nfsd4op_func)nfsd4_open_confirm,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001236 .op_name = "OP_OPEN_CONFIRM",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001237 },
1238 [OP_OPEN_DOWNGRADE] = {
1239 .op_func = (nfsd4op_func)nfsd4_open_downgrade,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001240 .op_name = "OP_OPEN_DOWNGRADE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001241 },
1242 [OP_PUTFH] = {
1243 .op_func = (nfsd4op_func)nfsd4_putfh,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001244 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001245 .op_name = "OP_PUTFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001246 },
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001247 [OP_PUTPUBFH] = {
J. Bruce Fieldsa1c8c4d2009-03-09 12:17:29 -04001248 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001249 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001250 .op_name = "OP_PUTPUBFH",
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001251 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001252 [OP_PUTROOTFH] = {
1253 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001254 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001255 .op_name = "OP_PUTROOTFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001256 },
1257 [OP_READ] = {
1258 .op_func = (nfsd4op_func)nfsd4_read,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001259 .op_name = "OP_READ",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001260 },
1261 [OP_READDIR] = {
1262 .op_func = (nfsd4op_func)nfsd4_readdir,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001263 .op_name = "OP_READDIR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001264 },
1265 [OP_READLINK] = {
1266 .op_func = (nfsd4op_func)nfsd4_readlink,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001267 .op_name = "OP_READLINK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001268 },
1269 [OP_REMOVE] = {
1270 .op_func = (nfsd4op_func)nfsd4_remove,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001271 .op_name = "OP_REMOVE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001272 },
1273 [OP_RENAME] = {
Benny Halevyb001a1b2008-07-02 11:15:03 +03001274 .op_name = "OP_RENAME",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001275 .op_func = (nfsd4op_func)nfsd4_rename,
1276 },
1277 [OP_RENEW] = {
1278 .op_func = (nfsd4op_func)nfsd4_renew,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001279 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001280 .op_name = "OP_RENEW",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001281 },
1282 [OP_RESTOREFH] = {
1283 .op_func = (nfsd4op_func)nfsd4_restorefh,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001284 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001285 .op_name = "OP_RESTOREFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001286 },
1287 [OP_SAVEFH] = {
1288 .op_func = (nfsd4op_func)nfsd4_savefh,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001289 .op_name = "OP_SAVEFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001290 },
Andy Adamsondcb488a2007-07-17 04:04:51 -07001291 [OP_SECINFO] = {
1292 .op_func = (nfsd4op_func)nfsd4_secinfo,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001293 .op_name = "OP_SECINFO",
Andy Adamsondcb488a2007-07-17 04:04:51 -07001294 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001295 [OP_SETATTR] = {
1296 .op_func = (nfsd4op_func)nfsd4_setattr,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001297 .op_name = "OP_SETATTR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001298 },
1299 [OP_SETCLIENTID] = {
1300 .op_func = (nfsd4op_func)nfsd4_setclientid,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001301 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001302 .op_name = "OP_SETCLIENTID",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001303 },
1304 [OP_SETCLIENTID_CONFIRM] = {
1305 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001306 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001307 .op_name = "OP_SETCLIENTID_CONFIRM",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001308 },
1309 [OP_VERIFY] = {
1310 .op_func = (nfsd4op_func)nfsd4_verify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001311 .op_name = "OP_VERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001312 },
1313 [OP_WRITE] = {
1314 .op_func = (nfsd4op_func)nfsd4_write,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001315 .op_name = "OP_WRITE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001316 },
1317 [OP_RELEASE_LOCKOWNER] = {
1318 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001319 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001320 .op_name = "OP_RELEASE_LOCKOWNER",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001321 },
Andy Adamson069b6ad2009-04-03 08:27:58 +03001322
1323 /* NFSv4.1 operations */
1324 [OP_EXCHANGE_ID] = {
1325 .op_func = (nfsd4op_func)nfsd4_exchange_id,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001326 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001327 .op_name = "OP_EXCHANGE_ID",
1328 },
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001329 [OP_BIND_CONN_TO_SESSION] = {
1330 .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session,
1331 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
1332 .op_name = "OP_BIND_CONN_TO_SESSION",
1333 },
Andy Adamson069b6ad2009-04-03 08:27:58 +03001334 [OP_CREATE_SESSION] = {
1335 .op_func = (nfsd4op_func)nfsd4_create_session,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001336 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001337 .op_name = "OP_CREATE_SESSION",
1338 },
1339 [OP_DESTROY_SESSION] = {
1340 .op_func = (nfsd4op_func)nfsd4_destroy_session,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001341 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001342 .op_name = "OP_DESTROY_SESSION",
1343 },
1344 [OP_SEQUENCE] = {
1345 .op_func = (nfsd4op_func)nfsd4_sequence,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001346 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001347 .op_name = "OP_SEQUENCE",
1348 },
J. Bruce Fields4dc6ec02010-04-19 15:11:28 -04001349 [OP_RECLAIM_COMPLETE] = {
1350 .op_func = (nfsd4op_func)nfsd4_reclaim_complete,
1351 .op_flags = ALLOWED_WITHOUT_FH,
1352 .op_name = "OP_RECLAIM_COMPLETE",
1353 },
J. Bruce Fields04f4ad12010-12-16 09:51:13 -05001354 [OP_SECINFO_NO_NAME] = {
1355 .op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
1356 .op_name = "OP_SECINFO_NO_NAME",
1357 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001358};
1359
Adrian Bunkf1c7f792008-08-08 19:26:42 +03001360static const char *nfsd4_op_name(unsigned opnum)
Benny Halevyb001a1b2008-07-02 11:15:03 +03001361{
1362 if (opnum < ARRAY_SIZE(nfsd4_ops))
1363 return nfsd4_ops[opnum].op_name;
1364 return "unknown_operation";
1365}
1366
Linus Torvalds1da177e2005-04-16 15:20:36 -07001367#define nfsd4_voidres nfsd4_voidargs
Linus Torvalds1da177e2005-04-16 15:20:36 -07001368struct nfsd4_voidargs { int dummy; };
1369
Linus Torvalds1da177e2005-04-16 15:20:36 -07001370/*
1371 * TODO: At the present time, the NFSv4 server does not do XID caching
1372 * of requests. Implementing XID caching would not be a serious problem,
1373 * although it would require a mild change in interfaces since one
1374 * doesn't know whether an NFSv4 request is idempotent until after the
1375 * XDR decode. However, XID caching totally confuses pynfs (Peter
1376 * Astrand's regression testsuite for NFSv4 servers), which reuses
1377 * XID's liberally, so I've left it unimplemented until pynfs generates
1378 * better XID's.
1379 */
1380static struct svc_procedure nfsd_procedures4[2] = {
Yu Zhiguo0a93a472009-05-19 14:09:54 +08001381 [NFSPROC4_NULL] = {
1382 .pc_func = (svc_procfunc) nfsd4_proc_null,
1383 .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
1384 .pc_argsize = sizeof(struct nfsd4_voidargs),
1385 .pc_ressize = sizeof(struct nfsd4_voidres),
1386 .pc_cachetype = RC_NOCACHE,
1387 .pc_xdrressize = 1,
1388 },
1389 [NFSPROC4_COMPOUND] = {
1390 .pc_func = (svc_procfunc) nfsd4_proc_compound,
1391 .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
1392 .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
1393 .pc_argsize = sizeof(struct nfsd4_compoundargs),
1394 .pc_ressize = sizeof(struct nfsd4_compoundres),
1395 .pc_cachetype = RC_NOCACHE,
1396 .pc_xdrressize = NFSD_BUFSIZE/4,
1397 },
Linus Torvalds1da177e2005-04-16 15:20:36 -07001398};
1399
1400struct svc_version nfsd_version4 = {
1401 .vs_vers = 4,
1402 .vs_nproc = 2,
1403 .vs_proc = nfsd_procedures4,
1404 .vs_dispatch = nfsd_dispatch,
1405 .vs_xdrsize = NFS4_SVC_XDRSIZE,
1406};
1407
1408/*
1409 * Local variables:
1410 * c-basic-offset: 8
1411 * End:
1412 */