blob: 0cdfd022bb7b307d344989f493b9873b903dd22d [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 Fieldsa4773c082009-02-02 17:23:10 -0500230 fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
231 &resfh.fh_handle);
J. Bruce Fields81ac95c2006-11-08 17:44:40 -0800232 if (!created)
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200233 status = do_open_permission(rqstp, current_fh, open,
234 NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800236out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237 fh_put(&resfh);
238 return status;
239}
240
Al Virob37ad282006-10-19 23:28:59 -0700241static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
243{
Al Virob37ad282006-10-19 23:28:59 -0700244 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245
246 /* Only reclaims from previously confirmed clients are valid */
247 if ((status = nfs4_check_open_reclaim(&open->op_clientid)))
248 return status;
249
250 /* We don't know the target directory, and therefore can not
251 * set the change info
252 */
253
254 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
255
256 /* set replay cache */
J. Bruce Fieldsa4773c082009-02-02 17:23:10 -0500257 fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
258 &current_fh->fh_handle);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259
260 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
261 (open->op_iattr.ia_size == 0);
262
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200263 status = do_open_permission(rqstp, current_fh, open,
264 NFSD_MAY_OWNER_OVERRIDE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265
266 return status;
267}
268
Andy Adamson60adfc52009-04-03 08:28:50 +0300269static void
270copy_clientid(clientid_t *clid, struct nfsd4_session *session)
271{
272 struct nfsd4_sessionid *sid =
273 (struct nfsd4_sessionid *)session->se_sessionid.data;
274
275 clid->cl_boot = sid->clientid.cl_boot;
276 clid->cl_id = sid->clientid.cl_id;
277}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278
J.Bruce Fields71911552006-12-13 00:35:29 -0800279static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800280nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -0800281 struct nfsd4_open *open)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282{
Al Virob37ad282006-10-19 23:28:59 -0700283 __be32 status;
Andy Adamson66689582009-04-03 08:28:45 +0300284 struct nfsd4_compoundres *resp;
285
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n",
287 (int)open->op_fname.len, open->op_fname.data,
288 open->op_stateowner);
289
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290 /* This check required by spec. */
291 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
292 return nfserr_inval;
293
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 Fieldsa4773c082009-02-02 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
Al Virob37ad282006-10-19 23:28:59 -0700607static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800608nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
609 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700610{
611 struct svc_fh tmp_fh;
Al Virob37ad282006-10-19 23:28:59 -0700612 __be32 ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613
614 fh_init(&tmp_fh, NFS4_FHSIZE);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700615 ret = exp_pseudoroot(rqstp, &tmp_fh);
616 if (ret)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617 return ret;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800618 if (tmp_fh.fh_dentry == cstate->current_fh.fh_dentry) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700619 fh_put(&tmp_fh);
620 return nfserr_noent;
621 }
622 fh_put(&tmp_fh);
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800623 return nfsd_lookup(rqstp, &cstate->current_fh,
624 "..", 2, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625}
626
J.Bruce Fields71911552006-12-13 00:35:29 -0800627static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800628nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
629 struct nfsd4_lookup *lookup)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800631 return nfsd_lookup(rqstp, &cstate->current_fh,
632 lookup->lo_name, lookup->lo_len,
633 &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634}
635
J.Bruce Fields71911552006-12-13 00:35:29 -0800636static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800637nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
638 struct nfsd4_read *read)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700639{
Al Virob37ad282006-10-19 23:28:59 -0700640 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700641
642 /* no need to check permission - this will be done in nfsd_read() */
643
NeilBrown7e06b7f2005-06-23 22:03:13 -0700644 read->rd_filp = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700645 if (read->rd_offset >= OFFSET_MAX)
646 return nfserr_inval;
647
648 nfs4_lock_state();
649 /* check stateid */
Benny Halevydd453df2009-04-03 08:28:41 +0300650 if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid,
651 RD_STATE, &read->rd_filp))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
653 goto out;
654 }
NeilBrown7e06b7f2005-06-23 22:03:13 -0700655 if (read->rd_filp)
656 get_file(read->rd_filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657 status = nfs_ok;
658out:
659 nfs4_unlock_state();
660 read->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800661 read->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662 return status;
663}
664
J.Bruce Fields71911552006-12-13 00:35:29 -0800665static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800666nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
667 struct nfsd4_readdir *readdir)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668{
669 u64 cookie = readdir->rd_cookie;
670 static const nfs4_verifier zeroverf;
671
672 /* no need to check permission - this will be done in nfsd_readdir() */
673
674 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
675 return nfserr_inval;
676
Andy Adamson7e705702009-04-03 08:29:11 +0300677 readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
678 readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
679 readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680
681 if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) ||
682 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
683 return nfserr_bad_cookie;
684
685 readdir->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800686 readdir->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700687 return nfs_ok;
688}
689
J.Bruce Fields71911552006-12-13 00:35:29 -0800690static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800691nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
692 struct nfsd4_readlink *readlink)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700693{
694 readlink->rl_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800695 readlink->rl_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696 return nfs_ok;
697}
698
J.Bruce Fields71911552006-12-13 00:35:29 -0800699static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800700nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
701 struct nfsd4_remove *remove)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700702{
Al Virob37ad282006-10-19 23:28:59 -0700703 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700704
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400705 if (locks_in_grace())
NeilBrownc815afc2005-06-23 22:03:00 -0700706 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800707 status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
708 remove->rm_name, remove->rm_namelen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709 if (status == nfserr_symlink)
710 return nfserr_notdir;
711 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800712 fh_unlock(&cstate->current_fh);
713 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714 }
715 return status;
716}
717
J.Bruce Fields71911552006-12-13 00:35:29 -0800718static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800719nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
720 struct nfsd4_rename *rename)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700721{
Al Virob37ad282006-10-19 23:28:59 -0700722 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800724 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725 return status;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400726 if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags
NeilBrownc815afc2005-06-23 22:03:00 -0700727 & NFSEXP_NOSUBTREECHECK))
728 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800729 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
730 rename->rn_snamelen, &cstate->current_fh,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731 rename->rn_tname, rename->rn_tnamelen);
732
733 /* the underlying filesystem returns different error's than required
734 * by NFSv4. both save_fh and current_fh have been verified.. */
735 if (status == nfserr_isdir)
736 status = nfserr_exist;
737 else if ((status == nfserr_notdir) &&
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800738 (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) &&
739 S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700740 status = nfserr_exist;
741 else if (status == nfserr_symlink)
742 status = nfserr_notdir;
743
744 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800745 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
746 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747 }
748 return status;
749}
750
J.Bruce Fields71911552006-12-13 00:35:29 -0800751static __be32
Andy Adamsondcb488a32007-07-17 04:04:51 -0700752nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
753 struct nfsd4_secinfo *secinfo)
754{
755 struct svc_fh resfh;
756 struct svc_export *exp;
757 struct dentry *dentry;
758 __be32 err;
759
760 fh_init(&resfh, NFS4_FHSIZE);
761 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
762 secinfo->si_name, secinfo->si_namelen,
763 &exp, &dentry);
764 if (err)
765 return err;
766 if (dentry->d_inode == NULL) {
767 exp_put(exp);
768 err = nfserr_noent;
769 } else
770 secinfo->si_exp = exp;
771 dput(dentry);
772 return err;
773}
774
775static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800776nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
777 struct nfsd4_setattr *setattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778{
Al Virob37ad282006-10-19 23:28:59 -0700779 __be32 status = nfs_ok;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700780
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
782 nfs4_lock_state();
Benny Halevydd453df2009-04-03 08:28:41 +0300783 status = nfs4_preprocess_stateid_op(cstate,
J. Bruce Fields6150ef02009-02-21 13:36:16 -0800784 &setattr->sa_stateid, WR_STATE, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700785 nfs4_unlock_state();
J. Bruce Fields375c5542006-01-18 17:43:33 -0800786 if (status) {
Greg Banks3e3b4802006-10-02 02:17:41 -0700787 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
J. Bruce Fields375c5542006-01-18 17:43:33 -0800788 return status;
789 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700790 }
Dave Hansen18f335a2008-02-15 14:37:38 -0800791 status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt);
792 if (status)
793 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794 status = nfs_ok;
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800795
796 status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
797 nfsd_attrmask);
798 if (status)
799 goto out;
800
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801 if (setattr->sa_acl != NULL)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800802 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
803 setattr->sa_acl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700804 if (status)
Dave Hansen18f335a2008-02-15 14:37:38 -0800805 goto out;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800806 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700807 0, (time_t)0);
Dave Hansen18f335a2008-02-15 14:37:38 -0800808out:
809 mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810 return status;
811}
812
J.Bruce Fields71911552006-12-13 00:35:29 -0800813static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800814nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
815 struct nfsd4_write *write)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816{
817 stateid_t *stateid = &write->wr_stateid;
818 struct file *filp = NULL;
819 u32 *p;
Al Virob37ad282006-10-19 23:28:59 -0700820 __be32 status = nfs_ok;
David Shaw31dec252009-03-05 20:16:14 -0500821 unsigned long cnt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822
823 /* no need to check permission - this will be done in nfsd_write() */
824
825 if (write->wr_offset >= OFFSET_MAX)
826 return nfserr_inval;
827
828 nfs4_lock_state();
Benny Halevydd453df2009-04-03 08:28:41 +0300829 status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp);
NeilBrown7e06b7f2005-06-23 22:03:13 -0700830 if (filp)
831 get_file(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700832 nfs4_unlock_state();
833
J. Bruce Fields375c5542006-01-18 17:43:33 -0800834 if (status) {
835 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
836 return status;
837 }
838
David Shaw31dec252009-03-05 20:16:14 -0500839 cnt = write->wr_buflen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840 write->wr_how_written = write->wr_stable_how;
841 p = (u32 *)write->wr_verifier.data;
842 *p++ = nfssvc_boot.tv_sec;
843 *p++ = nfssvc_boot.tv_usec;
844
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800845 status = nfsd_write(rqstp, &cstate->current_fh, filp,
846 write->wr_offset, rqstp->rq_vec, write->wr_vlen,
David Shaw31dec252009-03-05 20:16:14 -0500847 &cnt, &write->wr_how_written);
NeilBrown7e06b7f2005-06-23 22:03:13 -0700848 if (filp)
849 fput(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850
David Shaw31dec252009-03-05 20:16:14 -0500851 write->wr_bytes_written = cnt;
852
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853 if (status == nfserr_symlink)
854 status = nfserr_inval;
855 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856}
857
858/* This routine never returns NFS_OK! If there are no other errors, it
859 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
860 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
861 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
862 */
Al Virob37ad282006-10-19 23:28:59 -0700863static __be32
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -0800864_nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800865 struct nfsd4_verify *verify)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700866{
Al Viro2ebbc012006-10-19 23:28:58 -0700867 __be32 *buf, *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700868 int count;
Al Virob37ad282006-10-19 23:28:59 -0700869 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200871 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700872 if (status)
873 return status;
874
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800875 status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
876 if (status)
877 return status;
878
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
880 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
881 return nfserr_inval;
882 if (verify->ve_attrlen & 3)
883 return nfserr_inval;
884
885 /* count in words:
886 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
887 */
888 count = 4 + (verify->ve_attrlen >> 2);
889 buf = kmalloc(count << 2, GFP_KERNEL);
890 if (!buf)
891 return nfserr_resource;
892
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800893 status = nfsd4_encode_fattr(&cstate->current_fh,
894 cstate->current_fh.fh_export,
895 cstate->current_fh.fh_dentry, buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896 &count, verify->ve_bmval,
Frank Filz406a7ea2007-11-27 11:34:05 -0800897 rqstp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898
899 /* this means that nfsd4_encode_fattr() ran out of space */
900 if (status == nfserr_resource && count == 0)
901 status = nfserr_not_same;
902 if (status)
903 goto out_kfree;
904
Benny Halevy95ec28c2009-04-03 08:29:08 +0300905 /* skip bitmap */
906 p = buf + 1 + ntohl(buf[0]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700907 status = nfserr_not_same;
908 if (ntohl(*p++) != verify->ve_attrlen)
909 goto out_kfree;
910 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
911 status = nfserr_same;
912
913out_kfree:
914 kfree(buf);
915 return status;
916}
917
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -0800918static __be32
919nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
920 struct nfsd4_verify *verify)
921{
922 __be32 status;
923
924 status = _nfsd4_verify(rqstp, cstate, verify);
925 return status == nfserr_not_same ? nfs_ok : status;
926}
927
928static __be32
929nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
930 struct nfsd4_verify *verify)
931{
932 __be32 status;
933
934 status = _nfsd4_verify(rqstp, cstate, verify);
935 return status == nfserr_same ? nfs_ok : status;
936}
937
Linus Torvalds1da177e2005-04-16 15:20:36 -0700938/*
939 * NULL call.
940 */
Al Viro7111c662006-10-19 23:28:45 -0700941static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700942nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
943{
944 return nfs_ok;
945}
946
Shankar Anande2b20952006-07-10 04:45:44 -0700947static inline void nfsd4_increment_op_stats(u32 opnum)
948{
949 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
950 nfsdstats.nfs4_opcount[opnum]++;
951}
952
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800953typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
954 void *);
Andy Adamsonf9bb94c2009-04-03 08:28:12 +0300955enum nfsd4_op_flags {
956 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
957 ALLOWED_ON_ABSENT_FS = 2 << 0, /* ops processed on absent fs */
958 ALLOWED_AS_FIRST_OP = 3 << 0, /* ops reqired first in compound */
959};
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800960
961struct nfsd4_operation {
962 nfsd4op_func op_func;
963 u32 op_flags;
Benny Halevyb001a1b2008-07-02 11:15:03 +0300964 char *op_name;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800965};
966
967static struct nfsd4_operation nfsd4_ops[];
968
Adrian Bunkf1c7f792008-08-08 19:26:42 +0300969static const char *nfsd4_op_name(unsigned opnum);
Benny Halevyb001a1b2008-07-02 11:15:03 +0300970
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971/*
J. Bruce Fields57716352010-04-21 12:27:19 -0400972 * Enforce NFSv4.1 COMPOUND ordering rules:
Andy Adamsonf9bb94c2009-04-03 08:28:12 +0300973 *
J. Bruce Fields57716352010-04-21 12:27:19 -0400974 * Also note, enforced elsewhere:
975 * - SEQUENCE other than as first op results in
976 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
977 * - BIND_CONN_TO_SESSION must be the only op in its compound
978 * (Will be enforced in nfsd4_bind_conn_to_session().)
979 * - DESTROY_SESSION must be the final operation in a compound, if
980 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
981 * (Enforced in nfsd4_destroy_session().)
Andy Adamsonf9bb94c2009-04-03 08:28:12 +0300982 */
J. Bruce Fields57716352010-04-21 12:27:19 -0400983static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args)
Andy Adamsonf9bb94c2009-04-03 08:28:12 +0300984{
J. Bruce Fields57716352010-04-21 12:27:19 -0400985 struct nfsd4_op *op = &args->ops[0];
986
987 /* These ordering requirements don't apply to NFSv4.0: */
988 if (args->minorversion == 0)
989 return nfs_ok;
990 /* This is weird, but OK, not our problem: */
991 if (args->opcnt == 0)
992 return nfs_ok;
993 if (op->status == nfserr_op_illegal)
994 return nfs_ok;
995 if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP))
996 return nfserr_op_not_in_session;
997 if (op->opnum == OP_SEQUENCE)
998 return nfs_ok;
999 if (args->opcnt != 1)
1000 return nfserr_not_only_op;
1001 return nfs_ok;
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001002}
1003
1004/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001005 * COMPOUND call.
1006 */
Al Viro7111c662006-10-19 23:28:45 -07001007static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -07001008nfsd4_proc_compound(struct svc_rqst *rqstp,
1009 struct nfsd4_compoundargs *args,
1010 struct nfsd4_compoundres *resp)
1011{
1012 struct nfsd4_op *op;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001013 struct nfsd4_operation *opdesc;
Andy Adamsone354d572009-03-28 11:30:52 +03001014 struct nfsd4_compound_state *cstate = &resp->cstate;
J.Bruce Fieldse5710192006-12-13 00:35:20 -08001015 int slack_bytes;
Al Virob37ad282006-10-19 23:28:59 -07001016 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001017
Linus Torvalds1da177e2005-04-16 15:20:36 -07001018 resp->xbuf = &rqstp->rq_res;
Andy Adamsone354d572009-03-28 11:30:52 +03001019 resp->p = rqstp->rq_res.head[0].iov_base +
1020 rqstp->rq_res.head[0].iov_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001021 resp->tagp = resp->p;
1022 /* reserve space for: taglen, tag, and opcnt */
1023 resp->p += 2 + XDR_QUADLEN(args->taglen);
1024 resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
1025 resp->taglen = args->taglen;
1026 resp->tag = args->tag;
1027 resp->opcnt = 0;
1028 resp->rqstp = rqstp;
Andy Adamsond87a8ad2009-04-03 08:28:53 +03001029 resp->cstate.minorversion = args->minorversion;
Andy Adamsone354d572009-03-28 11:30:52 +03001030 resp->cstate.replay_owner = NULL;
J. Bruce Fields26c0c752010-04-24 15:35:43 -04001031 resp->cstate.session = NULL;
Andy Adamsone354d572009-03-28 11:30:52 +03001032 fh_init(&resp->cstate.current_fh, NFS4_FHSIZE);
1033 fh_init(&resp->cstate.save_fh, NFS4_FHSIZE);
NeilBrown8ff30fa2010-08-12 17:04:07 +10001034 /*
1035 * Don't use the deferral mechanism for NFSv4; compounds make it
1036 * too hard to avoid non-idempotency problems.
1037 */
1038 rqstp->rq_usedeferral = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001039
1040 /*
1041 * According to RFC3010, this takes precedence over all other errors.
1042 */
1043 status = nfserr_minor_vers_mismatch;
Benny Halevy8daf2202009-04-03 08:28:59 +03001044 if (args->minorversion > nfsd_supported_minorversion)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001045 goto out;
1046
J. Bruce Fields57716352010-04-21 12:27:19 -04001047 status = nfs41_check_op_ordering(args);
1048 if (status) {
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001049 op = &args->ops[0];
J. Bruce Fields57716352010-04-21 12:27:19 -04001050 op->status = status;
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001051 goto encode_op;
1052 }
1053
Linus Torvalds1da177e2005-04-16 15:20:36 -07001054 while (!status && resp->opcnt < args->opcnt) {
1055 op = &args->ops[resp->opcnt++];
1056
Benny Halevyb001a1b2008-07-02 11:15:03 +03001057 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
1058 resp->opcnt, args->opcnt, op->opnum,
1059 nfsd4_op_name(op->opnum));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001060 /*
1061 * The XDR decode routines may have pre-set op->status;
1062 * for example, if there is a miscellaneous XDR error
1063 * it will be set to nfserr_bad_xdr.
1064 */
1065 if (op->status)
1066 goto encode_op;
1067
1068 /* We must be able to encode a successful response to
1069 * this operation, with enough room left over to encode a
1070 * failed response to the next operation. If we don't
1071 * have enough room, fail with ERR_RESOURCE.
1072 */
J.Bruce Fieldse5710192006-12-13 00:35:20 -08001073 slack_bytes = (char *)resp->end - (char *)resp->p;
1074 if (slack_bytes < COMPOUND_SLACK_SPACE
1075 + COMPOUND_ERR_SLACK_SPACE) {
1076 BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001077 op->status = nfserr_resource;
1078 goto encode_op;
1079 }
1080
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001081 opdesc = &nfsd4_ops[op->opnum];
1082
J.Bruce Fieldsca364312006-12-13 00:35:27 -08001083 if (!cstate->current_fh.fh_dentry) {
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001084 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -07001085 op->status = nfserr_nofilehandle;
1086 goto encode_op;
1087 }
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001088 } else if (cstate->current_fh.fh_export->ex_fslocs.migrated &&
1089 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -07001090 op->status = nfserr_moved;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001091 goto encode_op;
1092 }
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001093
1094 if (opdesc->op_func)
1095 op->status = opdesc->op_func(rqstp, cstate, &op->u);
1096 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07001097 BUG_ON(op->status == nfs_ok);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001098
1099encode_op:
Andy Adamson49557cc2009-07-23 19:02:16 -04001100 /* Only from SEQUENCE */
Andy Adamsonda3846a2009-04-03 08:28:22 +03001101 if (resp->cstate.status == nfserr_replay_cache) {
1102 dprintk("%s NFS4.1 replay from cache\n", __func__);
Andy Adamsonabfabf82009-07-23 19:02:18 -04001103 status = op->status;
Andy Adamsonda3846a2009-04-03 08:28:22 +03001104 goto out;
1105 }
Al Viroa90b0612006-10-19 23:29:03 -07001106 if (op->status == nfserr_replay_me) {
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001107 op->replay = &cstate->replay_owner->so_replay;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001108 nfsd4_encode_replay(resp, op);
1109 status = op->status = op->replay->rp_status;
1110 } else {
1111 nfsd4_encode_operation(resp, op);
1112 status = op->status;
1113 }
Benny Halevy04077172008-12-15 19:40:49 +02001114
1115 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
1116 args->ops, args->opcnt, resp->opcnt, op->opnum,
1117 be32_to_cpu(status));
1118
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001119 if (cstate->replay_owner) {
1120 nfs4_put_stateowner(cstate->replay_owner);
1121 cstate->replay_owner = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001122 }
NeilBrown7e06b7f2005-06-23 22:03:13 -07001123 /* XXX Ugh, we need to get rid of this kind of special case: */
1124 if (op->opnum == OP_READ && op->u.read.rd_filp)
1125 fput(op->u.read.rd_filp);
Shankar Anande2b20952006-07-10 04:45:44 -07001126
1127 nfsd4_increment_op_stats(op->opnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001128 }
Andy Adamson2f425872009-04-03 08:27:32 +03001129 if (!rqstp->rq_usedeferral && status == nfserr_dropit) {
1130 dprintk("%s Dropit - send NFS4ERR_DELAY\n", __func__);
1131 status = nfserr_jukebox;
1132 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133
Andy Adamsonda3846a2009-04-03 08:28:22 +03001134 resp->cstate.status = status;
Andy Adamsone354d572009-03-28 11:30:52 +03001135 fh_put(&resp->cstate.current_fh);
1136 fh_put(&resp->cstate.save_fh);
1137 BUG_ON(resp->cstate.replay_owner);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001138out:
1139 nfsd4_release_compoundargs(args);
Andy Adamson2f425872009-04-03 08:27:32 +03001140 /* Reset deferral mechanism for RPC deferrals */
1141 rqstp->rq_usedeferral = 1;
J. Bruce Fields3b12cd92008-05-05 17:17:44 -04001142 dprintk("nfsv4 compound returned %d\n", ntohl(status));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001143 return status;
1144}
1145
Benny Halevy20766012009-03-28 11:32:05 +03001146static struct nfsd4_operation nfsd4_ops[] = {
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001147 [OP_ACCESS] = {
1148 .op_func = (nfsd4op_func)nfsd4_access,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001149 .op_name = "OP_ACCESS",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001150 },
1151 [OP_CLOSE] = {
1152 .op_func = (nfsd4op_func)nfsd4_close,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001153 .op_name = "OP_CLOSE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001154 },
1155 [OP_COMMIT] = {
1156 .op_func = (nfsd4op_func)nfsd4_commit,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001157 .op_name = "OP_COMMIT",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001158 },
1159 [OP_CREATE] = {
1160 .op_func = (nfsd4op_func)nfsd4_create,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001161 .op_name = "OP_CREATE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001162 },
1163 [OP_DELEGRETURN] = {
1164 .op_func = (nfsd4op_func)nfsd4_delegreturn,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001165 .op_name = "OP_DELEGRETURN",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001166 },
1167 [OP_GETATTR] = {
1168 .op_func = (nfsd4op_func)nfsd4_getattr,
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001169 .op_flags = ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001170 .op_name = "OP_GETATTR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001171 },
1172 [OP_GETFH] = {
1173 .op_func = (nfsd4op_func)nfsd4_getfh,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001174 .op_name = "OP_GETFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001175 },
1176 [OP_LINK] = {
1177 .op_func = (nfsd4op_func)nfsd4_link,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001178 .op_name = "OP_LINK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001179 },
1180 [OP_LOCK] = {
1181 .op_func = (nfsd4op_func)nfsd4_lock,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001182 .op_name = "OP_LOCK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001183 },
1184 [OP_LOCKT] = {
1185 .op_func = (nfsd4op_func)nfsd4_lockt,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001186 .op_name = "OP_LOCKT",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001187 },
1188 [OP_LOCKU] = {
1189 .op_func = (nfsd4op_func)nfsd4_locku,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001190 .op_name = "OP_LOCKU",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001191 },
1192 [OP_LOOKUP] = {
1193 .op_func = (nfsd4op_func)nfsd4_lookup,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001194 .op_name = "OP_LOOKUP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001195 },
1196 [OP_LOOKUPP] = {
1197 .op_func = (nfsd4op_func)nfsd4_lookupp,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001198 .op_name = "OP_LOOKUPP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001199 },
1200 [OP_NVERIFY] = {
1201 .op_func = (nfsd4op_func)nfsd4_nverify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001202 .op_name = "OP_NVERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001203 },
1204 [OP_OPEN] = {
1205 .op_func = (nfsd4op_func)nfsd4_open,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001206 .op_name = "OP_OPEN",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001207 },
1208 [OP_OPEN_CONFIRM] = {
1209 .op_func = (nfsd4op_func)nfsd4_open_confirm,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001210 .op_name = "OP_OPEN_CONFIRM",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001211 },
1212 [OP_OPEN_DOWNGRADE] = {
1213 .op_func = (nfsd4op_func)nfsd4_open_downgrade,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001214 .op_name = "OP_OPEN_DOWNGRADE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001215 },
1216 [OP_PUTFH] = {
1217 .op_func = (nfsd4op_func)nfsd4_putfh,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001218 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001219 .op_name = "OP_PUTFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001220 },
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001221 [OP_PUTPUBFH] = {
J. Bruce Fieldsa1c8c4d2009-03-09 12:17:29 -04001222 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001223 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001224 .op_name = "OP_PUTPUBFH",
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001225 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001226 [OP_PUTROOTFH] = {
1227 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001228 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001229 .op_name = "OP_PUTROOTFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001230 },
1231 [OP_READ] = {
1232 .op_func = (nfsd4op_func)nfsd4_read,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001233 .op_name = "OP_READ",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001234 },
1235 [OP_READDIR] = {
1236 .op_func = (nfsd4op_func)nfsd4_readdir,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001237 .op_name = "OP_READDIR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001238 },
1239 [OP_READLINK] = {
1240 .op_func = (nfsd4op_func)nfsd4_readlink,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001241 .op_name = "OP_READLINK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001242 },
1243 [OP_REMOVE] = {
1244 .op_func = (nfsd4op_func)nfsd4_remove,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001245 .op_name = "OP_REMOVE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001246 },
1247 [OP_RENAME] = {
Benny Halevyb001a1b2008-07-02 11:15:03 +03001248 .op_name = "OP_RENAME",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001249 .op_func = (nfsd4op_func)nfsd4_rename,
1250 },
1251 [OP_RENEW] = {
1252 .op_func = (nfsd4op_func)nfsd4_renew,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001253 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001254 .op_name = "OP_RENEW",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001255 },
1256 [OP_RESTOREFH] = {
1257 .op_func = (nfsd4op_func)nfsd4_restorefh,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001258 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001259 .op_name = "OP_RESTOREFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001260 },
1261 [OP_SAVEFH] = {
1262 .op_func = (nfsd4op_func)nfsd4_savefh,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001263 .op_name = "OP_SAVEFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001264 },
Andy Adamsondcb488a32007-07-17 04:04:51 -07001265 [OP_SECINFO] = {
1266 .op_func = (nfsd4op_func)nfsd4_secinfo,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001267 .op_name = "OP_SECINFO",
Andy Adamsondcb488a32007-07-17 04:04:51 -07001268 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001269 [OP_SETATTR] = {
1270 .op_func = (nfsd4op_func)nfsd4_setattr,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001271 .op_name = "OP_SETATTR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001272 },
1273 [OP_SETCLIENTID] = {
1274 .op_func = (nfsd4op_func)nfsd4_setclientid,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001275 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001276 .op_name = "OP_SETCLIENTID",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001277 },
1278 [OP_SETCLIENTID_CONFIRM] = {
1279 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001280 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001281 .op_name = "OP_SETCLIENTID_CONFIRM",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001282 },
1283 [OP_VERIFY] = {
1284 .op_func = (nfsd4op_func)nfsd4_verify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001285 .op_name = "OP_VERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001286 },
1287 [OP_WRITE] = {
1288 .op_func = (nfsd4op_func)nfsd4_write,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001289 .op_name = "OP_WRITE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001290 },
1291 [OP_RELEASE_LOCKOWNER] = {
1292 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001293 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001294 .op_name = "OP_RELEASE_LOCKOWNER",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001295 },
Andy Adamson069b6ad2009-04-03 08:27:58 +03001296
1297 /* NFSv4.1 operations */
1298 [OP_EXCHANGE_ID] = {
1299 .op_func = (nfsd4op_func)nfsd4_exchange_id,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001300 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001301 .op_name = "OP_EXCHANGE_ID",
1302 },
1303 [OP_CREATE_SESSION] = {
1304 .op_func = (nfsd4op_func)nfsd4_create_session,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001305 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001306 .op_name = "OP_CREATE_SESSION",
1307 },
1308 [OP_DESTROY_SESSION] = {
1309 .op_func = (nfsd4op_func)nfsd4_destroy_session,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001310 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001311 .op_name = "OP_DESTROY_SESSION",
1312 },
1313 [OP_SEQUENCE] = {
1314 .op_func = (nfsd4op_func)nfsd4_sequence,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001315 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001316 .op_name = "OP_SEQUENCE",
1317 },
J. Bruce Fields4dc6ec02010-04-19 15:11:28 -04001318 [OP_RECLAIM_COMPLETE] = {
1319 .op_func = (nfsd4op_func)nfsd4_reclaim_complete,
1320 .op_flags = ALLOWED_WITHOUT_FH,
1321 .op_name = "OP_RECLAIM_COMPLETE",
1322 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001323};
1324
Adrian Bunkf1c7f792008-08-08 19:26:42 +03001325static const char *nfsd4_op_name(unsigned opnum)
Benny Halevyb001a1b2008-07-02 11:15:03 +03001326{
1327 if (opnum < ARRAY_SIZE(nfsd4_ops))
1328 return nfsd4_ops[opnum].op_name;
1329 return "unknown_operation";
1330}
1331
Linus Torvalds1da177e2005-04-16 15:20:36 -07001332#define nfsd4_voidres nfsd4_voidargs
Linus Torvalds1da177e2005-04-16 15:20:36 -07001333struct nfsd4_voidargs { int dummy; };
1334
Linus Torvalds1da177e2005-04-16 15:20:36 -07001335/*
1336 * TODO: At the present time, the NFSv4 server does not do XID caching
1337 * of requests. Implementing XID caching would not be a serious problem,
1338 * although it would require a mild change in interfaces since one
1339 * doesn't know whether an NFSv4 request is idempotent until after the
1340 * XDR decode. However, XID caching totally confuses pynfs (Peter
1341 * Astrand's regression testsuite for NFSv4 servers), which reuses
1342 * XID's liberally, so I've left it unimplemented until pynfs generates
1343 * better XID's.
1344 */
1345static struct svc_procedure nfsd_procedures4[2] = {
Yu Zhiguo0a93a472009-05-19 14:09:54 +08001346 [NFSPROC4_NULL] = {
1347 .pc_func = (svc_procfunc) nfsd4_proc_null,
1348 .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
1349 .pc_argsize = sizeof(struct nfsd4_voidargs),
1350 .pc_ressize = sizeof(struct nfsd4_voidres),
1351 .pc_cachetype = RC_NOCACHE,
1352 .pc_xdrressize = 1,
1353 },
1354 [NFSPROC4_COMPOUND] = {
1355 .pc_func = (svc_procfunc) nfsd4_proc_compound,
1356 .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
1357 .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
1358 .pc_argsize = sizeof(struct nfsd4_compoundargs),
1359 .pc_ressize = sizeof(struct nfsd4_compoundres),
1360 .pc_cachetype = RC_NOCACHE,
1361 .pc_xdrressize = NFSD_BUFSIZE/4,
1362 },
Linus Torvalds1da177e2005-04-16 15:20:36 -07001363};
1364
1365struct svc_version nfsd_version4 = {
1366 .vs_vers = 4,
1367 .vs_nproc = 2,
1368 .vs_proc = nfsd_procedures4,
1369 .vs_dispatch = nfsd_dispatch,
1370 .vs_xdrsize = NFS4_SVC_XDRSIZE,
1371};
1372
1373/*
1374 * Local variables:
1375 * c-basic-offset: 8
1376 * End:
1377 */