blob: 9fa60a3ad48cdc540542730c91d0724ef6213659 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * fs/nfsd/nfs4proc.c
3 *
4 * Server-side procedures for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Linus Torvalds1da177e2005-04-16 15:20:36 -070036 */
37
38#include <linux/param.h>
39#include <linux/major.h>
40#include <linux/slab.h>
NeilBrown7e06b7f2005-06-23 22:03:13 -070041#include <linux/file.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070042
43#include <linux/sunrpc/svc.h>
44#include <linux/nfsd/nfsd.h>
45#include <linux/nfsd/cache.h>
46#include <linux/nfs4.h>
47#include <linux/nfsd/state.h>
48#include <linux/nfsd/xdr4.h>
49#include <linux/nfs4_acl.h>
Andy Adamsondcb488a32007-07-17 04:04:51 -070050#include <linux/sunrpc/gss_api.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070051
52#define NFSDDBG_FACILITY NFSDDBG_PROC
53
54static inline void
55fh_dup2(struct svc_fh *dst, struct svc_fh *src)
56{
57 fh_put(dst);
58 dget(src->fh_dentry);
59 if (src->fh_export)
60 cache_get(&src->fh_export->h);
61 *dst = *src;
62}
63
Al Virob37ad282006-10-19 23:28:59 -070064static __be32
J. Bruce Fieldsdc730e12006-10-17 00:10:13 -070065do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode)
Linus Torvalds1da177e2005-04-16 15:20:36 -070066{
Al Virob37ad282006-10-19 23:28:59 -070067 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -070068
69 if (open->op_truncate &&
70 !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
71 return nfserr_inval;
72
Linus Torvalds1da177e2005-04-16 15:20:36 -070073 if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
Miklos Szeredi8837abc2008-06-16 13:20:29 +020074 accmode |= NFSD_MAY_READ;
J. Bruce Fields9801d8a2006-10-17 00:10:14 -070075 if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
Miklos Szeredi8837abc2008-06-16 13:20:29 +020076 accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC);
J. Bruce Fields9801d8a2006-10-17 00:10:14 -070077 if (open->op_share_deny & NFS4_SHARE_DENY_WRITE)
Miklos Szeredi8837abc2008-06-16 13:20:29 +020078 accmode |= NFSD_MAY_WRITE;
Linus Torvalds1da177e2005-04-16 15:20:36 -070079
80 status = fh_verify(rqstp, current_fh, S_IFREG, accmode);
81
82 return status;
83}
84
Al Virob37ad282006-10-19 23:28:59 -070085static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -070086do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
87{
88 struct svc_fh resfh;
Al Virob37ad282006-10-19 23:28:59 -070089 __be32 status;
J. Bruce Fields81ac95c2006-11-08 17:44:40 -080090 int created = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070091
92 fh_init(&resfh, NFS4_FHSIZE);
93 open->op_truncate = 0;
94
95 if (open->op_create) {
96 /*
97 * Note: create modes (UNCHECKED,GUARDED...) are the same
98 * in NFSv4 as in v3.
99 */
100 status = nfsd_create_v3(rqstp, current_fh, open->op_fname.data,
101 open->op_fname.len, &open->op_iattr,
102 &resfh, open->op_createmode,
Jeff Layton749997e2007-07-31 00:37:51 -0700103 (u32 *)open->op_verf.data,
104 &open->op_truncate, &created);
105
106 /* If we ever decide to use different attrs to store the
107 * verifier in nfsd_create_v3, then we'll need to change this
108 */
109 if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0)
110 open->op_bmval[1] |= (FATTR4_WORD1_TIME_ACCESS |
111 FATTR4_WORD1_TIME_MODIFY);
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800112 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113 status = nfsd_lookup(rqstp, current_fh,
114 open->op_fname.data, open->op_fname.len, &resfh);
115 fh_unlock(current_fh);
116 }
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800117 if (status)
118 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800120 set_change_info(&open->op_cinfo, current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800122 /* set reply cache */
123 fh_dup2(current_fh, &resfh);
124 open->op_stateowner->so_replay.rp_openfh_len = resfh.fh_handle.fh_size;
125 memcpy(open->op_stateowner->so_replay.rp_openfh,
126 &resfh.fh_handle.fh_base, resfh.fh_handle.fh_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127
J. Bruce Fields81ac95c2006-11-08 17:44:40 -0800128 if (!created)
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200129 status = do_open_permission(rqstp, current_fh, open,
130 NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800132out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133 fh_put(&resfh);
134 return status;
135}
136
Al Virob37ad282006-10-19 23:28:59 -0700137static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
139{
Al Virob37ad282006-10-19 23:28:59 -0700140 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141
142 /* Only reclaims from previously confirmed clients are valid */
143 if ((status = nfs4_check_open_reclaim(&open->op_clientid)))
144 return status;
145
146 /* We don't know the target directory, and therefore can not
147 * set the change info
148 */
149
150 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
151
152 /* set replay cache */
153 open->op_stateowner->so_replay.rp_openfh_len = current_fh->fh_handle.fh_size;
154 memcpy(open->op_stateowner->so_replay.rp_openfh,
155 &current_fh->fh_handle.fh_base,
156 current_fh->fh_handle.fh_size);
157
158 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
159 (open->op_iattr.ia_size == 0);
160
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200161 status = do_open_permission(rqstp, current_fh, open,
162 NFSD_MAY_OWNER_OVERRIDE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163
164 return status;
165}
166
167
J.Bruce Fields71911552006-12-13 00:35:29 -0800168static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800169nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -0800170 struct nfsd4_open *open)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171{
Al Virob37ad282006-10-19 23:28:59 -0700172 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173 dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n",
174 (int)open->op_fname.len, open->op_fname.data,
175 open->op_stateowner);
176
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177 /* This check required by spec. */
178 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
179 return nfserr_inval;
180
181 nfs4_lock_state();
182
183 /* check seqid for replay. set nfs4_owner */
184 status = nfsd4_process_open1(open);
Al Viroa90b0612006-10-19 23:29:03 -0700185 if (status == nfserr_replay_me) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 struct nfs4_replay *rp = &open->op_stateowner->so_replay;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800187 fh_put(&cstate->current_fh);
188 cstate->current_fh.fh_handle.fh_size = rp->rp_openfh_len;
189 memcpy(&cstate->current_fh.fh_handle.fh_base, rp->rp_openfh,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 rp->rp_openfh_len);
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200191 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 if (status)
193 dprintk("nfsd4_open: replay failed"
194 " restoring previous filehandle\n");
195 else
Al Viroa90b0612006-10-19 23:29:03 -0700196 status = nfserr_replay_me;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 }
198 if (status)
199 goto out;
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800200
201 /* Openowner is now set, so sequence id will get bumped. Now we need
202 * these checks before we do any creates: */
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800203 status = nfserr_grace;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400204 if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800205 goto out;
206 status = nfserr_no_grace;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400207 if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800208 goto out;
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800209
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 switch (open->op_claim_type) {
NeilBrown0dd3c192005-06-23 22:02:56 -0700211 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
212 status = nfserr_inval;
213 if (open->op_create)
214 goto out;
215 /* fall through */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 case NFS4_OPEN_CLAIM_NULL:
217 /*
218 * (1) set CURRENT_FH to the file being opened,
219 * creating it if necessary, (2) set open->op_cinfo,
220 * (3) set open->op_truncate if the file is to be
221 * truncated after opening, (4) do permission checking.
222 */
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800223 status = do_open_lookup(rqstp, &cstate->current_fh,
224 open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225 if (status)
226 goto out;
227 break;
228 case NFS4_OPEN_CLAIM_PREVIOUS:
J. Bruce Fieldsa5258252006-01-18 17:43:30 -0800229 open->op_stateowner->so_confirmed = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230 /*
231 * The CURRENT_FH is already set to the file being
232 * opened. (1) set open->op_cinfo, (2) set
233 * open->op_truncate if the file is to be truncated
234 * after opening, (3) do permission checking.
235 */
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800236 status = do_open_fhandle(rqstp, &cstate->current_fh,
237 open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 if (status)
239 goto out;
240 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
J. Bruce Fieldsa5258252006-01-18 17:43:30 -0800242 open->op_stateowner->so_confirmed = 1;
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400243 dprintk("NFSD: unsupported OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244 open->op_claim_type);
245 status = nfserr_notsupp;
246 goto out;
247 default:
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400248 dprintk("NFSD: Invalid OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 open->op_claim_type);
250 status = nfserr_inval;
251 goto out;
252 }
253 /*
254 * nfsd4_process_open2() does the actual opening of the file. If
255 * successful, it (1) truncates the file if open->op_truncate was
256 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
257 */
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800258 status = nfsd4_process_open2(rqstp, &cstate->current_fh, open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259out:
Neil Brownf2327d92005-09-13 01:25:37 -0700260 if (open->op_stateowner) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261 nfs4_get_stateowner(open->op_stateowner);
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -0800262 cstate->replay_owner = open->op_stateowner;
Neil Brownf2327d92005-09-13 01:25:37 -0700263 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 nfs4_unlock_state();
265 return status;
266}
267
268/*
269 * filehandle-manipulating ops.
270 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800271static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800272nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
273 struct svc_fh **getfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800275 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276 return nfserr_nofilehandle;
277
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800278 *getfh = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279 return nfs_ok;
280}
281
J.Bruce Fields71911552006-12-13 00:35:29 -0800282static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800283nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
284 struct nfsd4_putfh *putfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800286 fh_put(&cstate->current_fh);
287 cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
288 memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
289 putfh->pf_fhlen);
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200290 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291}
292
J.Bruce Fields71911552006-12-13 00:35:29 -0800293static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800294nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
295 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296{
Al Virob37ad282006-10-19 23:28:59 -0700297 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800299 fh_put(&cstate->current_fh);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700300 status = exp_pseudoroot(rqstp, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301 return status;
302}
303
J.Bruce Fields71911552006-12-13 00:35:29 -0800304static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800305nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
306 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800308 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 return nfserr_restorefh;
310
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800311 fh_dup2(&cstate->current_fh, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312 return nfs_ok;
313}
314
J.Bruce Fields71911552006-12-13 00:35:29 -0800315static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800316nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
317 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800319 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320 return nfserr_nofilehandle;
321
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800322 fh_dup2(&cstate->save_fh, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 return nfs_ok;
324}
325
326/*
327 * misc nfsv4 ops
328 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800329static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800330nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
331 struct nfsd4_access *access)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332{
333 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
334 return nfserr_inval;
335
336 access->ac_resp_access = access->ac_req_access;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800337 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
338 &access->ac_supported);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339}
340
J.Bruce Fields71911552006-12-13 00:35:29 -0800341static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800342nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
343 struct nfsd4_commit *commit)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344{
Al Virob37ad282006-10-19 23:28:59 -0700345 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346
347 u32 *p = (u32 *)commit->co_verf.data;
348 *p++ = nfssvc_boot.tv_sec;
349 *p++ = nfssvc_boot.tv_usec;
350
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800351 status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
352 commit->co_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353 if (status == nfserr_symlink)
354 status = nfserr_inval;
355 return status;
356}
357
Al Virob37ad282006-10-19 23:28:59 -0700358static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800359nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
360 struct nfsd4_create *create)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361{
362 struct svc_fh resfh;
Al Virob37ad282006-10-19 23:28:59 -0700363 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 dev_t rdev;
365
366 fh_init(&resfh, NFS4_FHSIZE);
367
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200368 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
369 NFSD_MAY_CREATE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 if (status == nfserr_symlink)
371 status = nfserr_notdir;
372 if (status)
373 return status;
374
375 switch (create->cr_type) {
376 case NF4LNK:
377 /* ugh! we have to null-terminate the linktext, or
378 * vfs_symlink() will choke. it is always safe to
379 * null-terminate by brute force, since at worst we
380 * will overwrite the first byte of the create namelen
381 * in the XDR buffer, which has already been extracted
382 * during XDR decode.
383 */
384 create->cr_linkname[create->cr_linklen] = 0;
385
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800386 status = nfsd_symlink(rqstp, &cstate->current_fh,
387 create->cr_name, create->cr_namelen,
388 create->cr_linkname, create->cr_linklen,
389 &resfh, &create->cr_iattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390 break;
391
392 case NF4BLK:
393 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
394 if (MAJOR(rdev) != create->cr_specdata1 ||
395 MINOR(rdev) != create->cr_specdata2)
396 return nfserr_inval;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800397 status = nfsd_create(rqstp, &cstate->current_fh,
398 create->cr_name, create->cr_namelen,
399 &create->cr_iattr, S_IFBLK, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400 break;
401
402 case NF4CHR:
403 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
404 if (MAJOR(rdev) != create->cr_specdata1 ||
405 MINOR(rdev) != create->cr_specdata2)
406 return nfserr_inval;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800407 status = nfsd_create(rqstp, &cstate->current_fh,
408 create->cr_name, create->cr_namelen,
409 &create->cr_iattr,S_IFCHR, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410 break;
411
412 case NF4SOCK:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800413 status = nfsd_create(rqstp, &cstate->current_fh,
414 create->cr_name, create->cr_namelen,
415 &create->cr_iattr, S_IFSOCK, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 break;
417
418 case NF4FIFO:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800419 status = nfsd_create(rqstp, &cstate->current_fh,
420 create->cr_name, create->cr_namelen,
421 &create->cr_iattr, S_IFIFO, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 break;
423
424 case NF4DIR:
425 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800426 status = nfsd_create(rqstp, &cstate->current_fh,
427 create->cr_name, create->cr_namelen,
428 &create->cr_iattr, S_IFDIR, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429 break;
430
431 default:
432 status = nfserr_badtype;
433 }
434
435 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800436 fh_unlock(&cstate->current_fh);
437 set_change_info(&create->cr_cinfo, &cstate->current_fh);
438 fh_dup2(&cstate->current_fh, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439 }
440
441 fh_put(&resfh);
442 return status;
443}
444
J.Bruce Fields71911552006-12-13 00:35:29 -0800445static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800446nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
447 struct nfsd4_getattr *getattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448{
Al Virob37ad282006-10-19 23:28:59 -0700449 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200451 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452 if (status)
453 return status;
454
455 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
456 return nfserr_inval;
457
458 getattr->ga_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0;
459 getattr->ga_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1;
460
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800461 getattr->ga_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462 return nfs_ok;
463}
464
J.Bruce Fields71911552006-12-13 00:35:29 -0800465static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800466nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
467 struct nfsd4_link *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468{
Al Virob37ad282006-10-19 23:28:59 -0700469 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800471 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472 return status;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800473 status = nfsd_link(rqstp, &cstate->current_fh,
474 link->li_name, link->li_namelen, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475 if (!status)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800476 set_change_info(&link->li_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477 return status;
478}
479
Al Virob37ad282006-10-19 23:28:59 -0700480static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800481nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
482 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483{
484 struct svc_fh tmp_fh;
Al Virob37ad282006-10-19 23:28:59 -0700485 __be32 ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486
487 fh_init(&tmp_fh, NFS4_FHSIZE);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700488 ret = exp_pseudoroot(rqstp, &tmp_fh);
489 if (ret)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 return ret;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800491 if (tmp_fh.fh_dentry == cstate->current_fh.fh_dentry) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492 fh_put(&tmp_fh);
493 return nfserr_noent;
494 }
495 fh_put(&tmp_fh);
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800496 return nfsd_lookup(rqstp, &cstate->current_fh,
497 "..", 2, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498}
499
J.Bruce Fields71911552006-12-13 00:35:29 -0800500static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800501nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
502 struct nfsd4_lookup *lookup)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800504 return nfsd_lookup(rqstp, &cstate->current_fh,
505 lookup->lo_name, lookup->lo_len,
506 &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507}
508
J.Bruce Fields71911552006-12-13 00:35:29 -0800509static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800510nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
511 struct nfsd4_read *read)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512{
Al Virob37ad282006-10-19 23:28:59 -0700513 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514
515 /* no need to check permission - this will be done in nfsd_read() */
516
NeilBrown7e06b7f2005-06-23 22:03:13 -0700517 read->rd_filp = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 if (read->rd_offset >= OFFSET_MAX)
519 return nfserr_inval;
520
521 nfs4_lock_state();
522 /* check stateid */
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800523 if ((status = nfs4_preprocess_stateid_op(&cstate->current_fh,
524 &read->rd_stateid,
NeilBrown7e06b7f2005-06-23 22:03:13 -0700525 CHECK_FH | RD_STATE, &read->rd_filp))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
527 goto out;
528 }
NeilBrown7e06b7f2005-06-23 22:03:13 -0700529 if (read->rd_filp)
530 get_file(read->rd_filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531 status = nfs_ok;
532out:
533 nfs4_unlock_state();
534 read->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800535 read->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536 return status;
537}
538
J.Bruce Fields71911552006-12-13 00:35:29 -0800539static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800540nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
541 struct nfsd4_readdir *readdir)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542{
543 u64 cookie = readdir->rd_cookie;
544 static const nfs4_verifier zeroverf;
545
546 /* no need to check permission - this will be done in nfsd_readdir() */
547
548 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
549 return nfserr_inval;
550
551 readdir->rd_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0;
552 readdir->rd_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1;
553
554 if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) ||
555 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
556 return nfserr_bad_cookie;
557
558 readdir->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800559 readdir->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560 return nfs_ok;
561}
562
J.Bruce Fields71911552006-12-13 00:35:29 -0800563static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800564nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
565 struct nfsd4_readlink *readlink)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566{
567 readlink->rl_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800568 readlink->rl_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569 return nfs_ok;
570}
571
J.Bruce Fields71911552006-12-13 00:35:29 -0800572static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800573nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
574 struct nfsd4_remove *remove)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575{
Al Virob37ad282006-10-19 23:28:59 -0700576 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400578 if (locks_in_grace())
NeilBrownc815afc2005-06-23 22:03:00 -0700579 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800580 status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
581 remove->rm_name, remove->rm_namelen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582 if (status == nfserr_symlink)
583 return nfserr_notdir;
584 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800585 fh_unlock(&cstate->current_fh);
586 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587 }
588 return status;
589}
590
J.Bruce Fields71911552006-12-13 00:35:29 -0800591static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800592nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
593 struct nfsd4_rename *rename)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594{
Al Virob37ad282006-10-19 23:28:59 -0700595 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800597 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598 return status;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400599 if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags
NeilBrownc815afc2005-06-23 22:03:00 -0700600 & NFSEXP_NOSUBTREECHECK))
601 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800602 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
603 rename->rn_snamelen, &cstate->current_fh,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700604 rename->rn_tname, rename->rn_tnamelen);
605
606 /* the underlying filesystem returns different error's than required
607 * by NFSv4. both save_fh and current_fh have been verified.. */
608 if (status == nfserr_isdir)
609 status = nfserr_exist;
610 else if ((status == nfserr_notdir) &&
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800611 (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) &&
612 S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613 status = nfserr_exist;
614 else if (status == nfserr_symlink)
615 status = nfserr_notdir;
616
617 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800618 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
619 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620 }
621 return status;
622}
623
J.Bruce Fields71911552006-12-13 00:35:29 -0800624static __be32
Andy Adamsondcb488a32007-07-17 04:04:51 -0700625nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
626 struct nfsd4_secinfo *secinfo)
627{
628 struct svc_fh resfh;
629 struct svc_export *exp;
630 struct dentry *dentry;
631 __be32 err;
632
633 fh_init(&resfh, NFS4_FHSIZE);
634 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
635 secinfo->si_name, secinfo->si_namelen,
636 &exp, &dentry);
637 if (err)
638 return err;
639 if (dentry->d_inode == NULL) {
640 exp_put(exp);
641 err = nfserr_noent;
642 } else
643 secinfo->si_exp = exp;
644 dput(dentry);
645 return err;
646}
647
648static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800649nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
650 struct nfsd4_setattr *setattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651{
Al Virob37ad282006-10-19 23:28:59 -0700652 __be32 status = nfs_ok;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653
Linus Torvalds1da177e2005-04-16 15:20:36 -0700654 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
655 nfs4_lock_state();
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800656 status = nfs4_preprocess_stateid_op(&cstate->current_fh,
J. Bruce Fields375c5542006-01-18 17:43:33 -0800657 &setattr->sa_stateid, CHECK_FH | WR_STATE, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658 nfs4_unlock_state();
J. Bruce Fields375c5542006-01-18 17:43:33 -0800659 if (status) {
Greg Banks3e3b4802006-10-02 02:17:41 -0700660 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
J. Bruce Fields375c5542006-01-18 17:43:33 -0800661 return status;
662 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663 }
Dave Hansen18f335a2008-02-15 14:37:38 -0800664 status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt);
665 if (status)
666 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667 status = nfs_ok;
668 if (setattr->sa_acl != NULL)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800669 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
670 setattr->sa_acl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700671 if (status)
Dave Hansen18f335a2008-02-15 14:37:38 -0800672 goto out;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800673 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674 0, (time_t)0);
Dave Hansen18f335a2008-02-15 14:37:38 -0800675out:
676 mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677 return status;
678}
679
J.Bruce Fields71911552006-12-13 00:35:29 -0800680static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800681nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
682 struct nfsd4_write *write)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683{
684 stateid_t *stateid = &write->wr_stateid;
685 struct file *filp = NULL;
686 u32 *p;
Al Virob37ad282006-10-19 23:28:59 -0700687 __be32 status = nfs_ok;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688
689 /* no need to check permission - this will be done in nfsd_write() */
690
691 if (write->wr_offset >= OFFSET_MAX)
692 return nfserr_inval;
693
694 nfs4_lock_state();
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800695 status = nfs4_preprocess_stateid_op(&cstate->current_fh, stateid,
J. Bruce Fields375c5542006-01-18 17:43:33 -0800696 CHECK_FH | WR_STATE, &filp);
NeilBrown7e06b7f2005-06-23 22:03:13 -0700697 if (filp)
698 get_file(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700699 nfs4_unlock_state();
700
J. Bruce Fields375c5542006-01-18 17:43:33 -0800701 if (status) {
702 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
703 return status;
704 }
705
Linus Torvalds1da177e2005-04-16 15:20:36 -0700706 write->wr_bytes_written = write->wr_buflen;
707 write->wr_how_written = write->wr_stable_how;
708 p = (u32 *)write->wr_verifier.data;
709 *p++ = nfssvc_boot.tv_sec;
710 *p++ = nfssvc_boot.tv_usec;
711
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800712 status = nfsd_write(rqstp, &cstate->current_fh, filp,
713 write->wr_offset, rqstp->rq_vec, write->wr_vlen,
714 write->wr_buflen, &write->wr_how_written);
NeilBrown7e06b7f2005-06-23 22:03:13 -0700715 if (filp)
716 fput(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717
718 if (status == nfserr_symlink)
719 status = nfserr_inval;
720 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700721}
722
723/* This routine never returns NFS_OK! If there are no other errors, it
724 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
725 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
726 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
727 */
Al Virob37ad282006-10-19 23:28:59 -0700728static __be32
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -0800729_nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800730 struct nfsd4_verify *verify)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731{
Al Viro2ebbc012006-10-19 23:28:58 -0700732 __be32 *buf, *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733 int count;
Al Virob37ad282006-10-19 23:28:59 -0700734 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200736 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700737 if (status)
738 return status;
739
740 if ((verify->ve_bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0)
741 || (verify->ve_bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1))
742 return nfserr_attrnotsupp;
743 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
744 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
745 return nfserr_inval;
746 if (verify->ve_attrlen & 3)
747 return nfserr_inval;
748
749 /* count in words:
750 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
751 */
752 count = 4 + (verify->ve_attrlen >> 2);
753 buf = kmalloc(count << 2, GFP_KERNEL);
754 if (!buf)
755 return nfserr_resource;
756
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800757 status = nfsd4_encode_fattr(&cstate->current_fh,
758 cstate->current_fh.fh_export,
759 cstate->current_fh.fh_dentry, buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760 &count, verify->ve_bmval,
Frank Filz406a7ea2007-11-27 11:34:05 -0800761 rqstp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762
763 /* this means that nfsd4_encode_fattr() ran out of space */
764 if (status == nfserr_resource && count == 0)
765 status = nfserr_not_same;
766 if (status)
767 goto out_kfree;
768
769 p = buf + 3;
770 status = nfserr_not_same;
771 if (ntohl(*p++) != verify->ve_attrlen)
772 goto out_kfree;
773 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
774 status = nfserr_same;
775
776out_kfree:
777 kfree(buf);
778 return status;
779}
780
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -0800781static __be32
782nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
783 struct nfsd4_verify *verify)
784{
785 __be32 status;
786
787 status = _nfsd4_verify(rqstp, cstate, verify);
788 return status == nfserr_not_same ? nfs_ok : status;
789}
790
791static __be32
792nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
793 struct nfsd4_verify *verify)
794{
795 __be32 status;
796
797 status = _nfsd4_verify(rqstp, cstate, verify);
798 return status == nfserr_same ? nfs_ok : status;
799}
800
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801/*
802 * NULL call.
803 */
Al Viro7111c662006-10-19 23:28:45 -0700804static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
806{
807 return nfs_ok;
808}
809
Shankar Anande2b20952006-07-10 04:45:44 -0700810static inline void nfsd4_increment_op_stats(u32 opnum)
811{
812 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
813 nfsdstats.nfs4_opcount[opnum]++;
814}
815
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800816static void cstate_free(struct nfsd4_compound_state *cstate)
817{
818 if (cstate == NULL)
819 return;
820 fh_put(&cstate->current_fh);
821 fh_put(&cstate->save_fh);
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -0800822 BUG_ON(cstate->replay_owner);
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800823 kfree(cstate);
824}
825
826static struct nfsd4_compound_state *cstate_alloc(void)
827{
828 struct nfsd4_compound_state *cstate;
829
830 cstate = kmalloc(sizeof(struct nfsd4_compound_state), GFP_KERNEL);
831 if (cstate == NULL)
832 return NULL;
833 fh_init(&cstate->current_fh, NFS4_FHSIZE);
834 fh_init(&cstate->save_fh, NFS4_FHSIZE);
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -0800835 cstate->replay_owner = NULL;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800836 return cstate;
837}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700838
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800839typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
840 void *);
841
842struct nfsd4_operation {
843 nfsd4op_func op_func;
844 u32 op_flags;
J.Bruce Fields27d630e2006-12-13 00:35:43 -0800845/* Most ops require a valid current filehandle; a few don't: */
846#define ALLOWED_WITHOUT_FH 1
J.Bruce Fieldseeac2942006-12-13 00:35:39 -0800847/* GETATTR and ops not listed as returning NFS4ERR_MOVED: */
J.Bruce Fields27d630e2006-12-13 00:35:43 -0800848#define ALLOWED_ON_ABSENT_FS 2
Benny Halevyb001a1b2008-07-02 11:15:03 +0300849 char *op_name;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800850};
851
852static struct nfsd4_operation nfsd4_ops[];
853
Adrian Bunkf1c7f792008-08-08 19:26:42 +0300854static const char *nfsd4_op_name(unsigned opnum);
Benny Halevyb001a1b2008-07-02 11:15:03 +0300855
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856/*
857 * COMPOUND call.
858 */
Al Viro7111c662006-10-19 23:28:45 -0700859static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700860nfsd4_proc_compound(struct svc_rqst *rqstp,
861 struct nfsd4_compoundargs *args,
862 struct nfsd4_compoundres *resp)
863{
864 struct nfsd4_op *op;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800865 struct nfsd4_operation *opdesc;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800866 struct nfsd4_compound_state *cstate = NULL;
J.Bruce Fieldse5710192006-12-13 00:35:20 -0800867 int slack_bytes;
Al Virob37ad282006-10-19 23:28:59 -0700868 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700869
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870 resp->xbuf = &rqstp->rq_res;
871 resp->p = rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len;
872 resp->tagp = resp->p;
873 /* reserve space for: taglen, tag, and opcnt */
874 resp->p += 2 + XDR_QUADLEN(args->taglen);
875 resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
876 resp->taglen = args->taglen;
877 resp->tag = args->tag;
878 resp->opcnt = 0;
879 resp->rqstp = rqstp;
880
881 /*
882 * According to RFC3010, this takes precedence over all other errors.
883 */
884 status = nfserr_minor_vers_mismatch;
885 if (args->minorversion > NFSD_SUPPORTED_MINOR_VERSION)
886 goto out;
887
Andy Adamsonc228c242008-08-21 08:42:16 -0400888 status = nfserr_resource;
889 cstate = cstate_alloc();
890 if (cstate == NULL)
891 goto out;
892
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893 status = nfs_ok;
894 while (!status && resp->opcnt < args->opcnt) {
895 op = &args->ops[resp->opcnt++];
896
Benny Halevyb001a1b2008-07-02 11:15:03 +0300897 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
898 resp->opcnt, args->opcnt, op->opnum,
899 nfsd4_op_name(op->opnum));
J. Bruce Fieldsfd445272006-01-18 17:43:23 -0800900
Linus Torvalds1da177e2005-04-16 15:20:36 -0700901 /*
902 * The XDR decode routines may have pre-set op->status;
903 * for example, if there is a miscellaneous XDR error
904 * it will be set to nfserr_bad_xdr.
905 */
906 if (op->status)
907 goto encode_op;
908
909 /* We must be able to encode a successful response to
910 * this operation, with enough room left over to encode a
911 * failed response to the next operation. If we don't
912 * have enough room, fail with ERR_RESOURCE.
913 */
J.Bruce Fieldse5710192006-12-13 00:35:20 -0800914 slack_bytes = (char *)resp->end - (char *)resp->p;
915 if (slack_bytes < COMPOUND_SLACK_SPACE
916 + COMPOUND_ERR_SLACK_SPACE) {
917 BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700918 op->status = nfserr_resource;
919 goto encode_op;
920 }
921
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800922 opdesc = &nfsd4_ops[op->opnum];
923
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800924 if (!cstate->current_fh.fh_dentry) {
J.Bruce Fields27d630e2006-12-13 00:35:43 -0800925 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -0700926 op->status = nfserr_nofilehandle;
927 goto encode_op;
928 }
J.Bruce Fieldseeac2942006-12-13 00:35:39 -0800929 } else if (cstate->current_fh.fh_export->ex_fslocs.migrated &&
930 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -0700931 op->status = nfserr_moved;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700932 goto encode_op;
933 }
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800934
935 if (opdesc->op_func)
936 op->status = opdesc->op_func(rqstp, cstate, &op->u);
937 else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700938 BUG_ON(op->status == nfs_ok);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700939
940encode_op:
Al Viroa90b0612006-10-19 23:29:03 -0700941 if (op->status == nfserr_replay_me) {
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -0800942 op->replay = &cstate->replay_owner->so_replay;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943 nfsd4_encode_replay(resp, op);
944 status = op->status = op->replay->rp_status;
945 } else {
946 nfsd4_encode_operation(resp, op);
947 status = op->status;
948 }
Benny Halevy04077172008-12-15 19:40:49 +0200949
950 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
951 args->ops, args->opcnt, resp->opcnt, op->opnum,
952 be32_to_cpu(status));
953
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -0800954 if (cstate->replay_owner) {
955 nfs4_put_stateowner(cstate->replay_owner);
956 cstate->replay_owner = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957 }
NeilBrown7e06b7f2005-06-23 22:03:13 -0700958 /* XXX Ugh, we need to get rid of this kind of special case: */
959 if (op->opnum == OP_READ && op->u.read.rd_filp)
960 fput(op->u.read.rd_filp);
Shankar Anande2b20952006-07-10 04:45:44 -0700961
962 nfsd4_increment_op_stats(op->opnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700963 }
964
Andy Adamsonc228c242008-08-21 08:42:16 -0400965 cstate_free(cstate);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700966out:
967 nfsd4_release_compoundargs(args);
J. Bruce Fields3b12cd92008-05-05 17:17:44 -0400968 dprintk("nfsv4 compound returned %d\n", ntohl(status));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700969 return status;
970}
971
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800972static struct nfsd4_operation nfsd4_ops[OP_RELEASE_LOCKOWNER+1] = {
973 [OP_ACCESS] = {
974 .op_func = (nfsd4op_func)nfsd4_access,
Benny Halevyb001a1b2008-07-02 11:15:03 +0300975 .op_name = "OP_ACCESS",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800976 },
977 [OP_CLOSE] = {
978 .op_func = (nfsd4op_func)nfsd4_close,
Benny Halevyb001a1b2008-07-02 11:15:03 +0300979 .op_name = "OP_CLOSE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800980 },
981 [OP_COMMIT] = {
982 .op_func = (nfsd4op_func)nfsd4_commit,
Benny Halevyb001a1b2008-07-02 11:15:03 +0300983 .op_name = "OP_COMMIT",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800984 },
985 [OP_CREATE] = {
986 .op_func = (nfsd4op_func)nfsd4_create,
Benny Halevyb001a1b2008-07-02 11:15:03 +0300987 .op_name = "OP_CREATE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800988 },
989 [OP_DELEGRETURN] = {
990 .op_func = (nfsd4op_func)nfsd4_delegreturn,
Benny Halevyb001a1b2008-07-02 11:15:03 +0300991 .op_name = "OP_DELEGRETURN",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800992 },
993 [OP_GETATTR] = {
994 .op_func = (nfsd4op_func)nfsd4_getattr,
J.Bruce Fieldseeac2942006-12-13 00:35:39 -0800995 .op_flags = ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +0300996 .op_name = "OP_GETATTR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800997 },
998 [OP_GETFH] = {
999 .op_func = (nfsd4op_func)nfsd4_getfh,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001000 .op_name = "OP_GETFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001001 },
1002 [OP_LINK] = {
1003 .op_func = (nfsd4op_func)nfsd4_link,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001004 .op_name = "OP_LINK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001005 },
1006 [OP_LOCK] = {
1007 .op_func = (nfsd4op_func)nfsd4_lock,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001008 .op_name = "OP_LOCK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001009 },
1010 [OP_LOCKT] = {
1011 .op_func = (nfsd4op_func)nfsd4_lockt,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001012 .op_name = "OP_LOCKT",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001013 },
1014 [OP_LOCKU] = {
1015 .op_func = (nfsd4op_func)nfsd4_locku,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001016 .op_name = "OP_LOCKU",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001017 },
1018 [OP_LOOKUP] = {
1019 .op_func = (nfsd4op_func)nfsd4_lookup,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001020 .op_name = "OP_LOOKUP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001021 },
1022 [OP_LOOKUPP] = {
1023 .op_func = (nfsd4op_func)nfsd4_lookupp,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001024 .op_name = "OP_LOOKUPP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001025 },
1026 [OP_NVERIFY] = {
1027 .op_func = (nfsd4op_func)nfsd4_nverify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001028 .op_name = "OP_NVERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001029 },
1030 [OP_OPEN] = {
1031 .op_func = (nfsd4op_func)nfsd4_open,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001032 .op_name = "OP_OPEN",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001033 },
1034 [OP_OPEN_CONFIRM] = {
1035 .op_func = (nfsd4op_func)nfsd4_open_confirm,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001036 .op_name = "OP_OPEN_CONFIRM",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001037 },
1038 [OP_OPEN_DOWNGRADE] = {
1039 .op_func = (nfsd4op_func)nfsd4_open_downgrade,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001040 .op_name = "OP_OPEN_DOWNGRADE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001041 },
1042 [OP_PUTFH] = {
1043 .op_func = (nfsd4op_func)nfsd4_putfh,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001044 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001045 .op_name = "OP_PUTFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001046 },
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001047 [OP_PUTPUBFH] = {
Benny Halevyb001a1b2008-07-02 11:15:03 +03001048 /* unsupported, just for future reference: */
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001049 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001050 .op_name = "OP_PUTPUBFH",
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001051 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001052 [OP_PUTROOTFH] = {
1053 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001054 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001055 .op_name = "OP_PUTROOTFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001056 },
1057 [OP_READ] = {
1058 .op_func = (nfsd4op_func)nfsd4_read,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001059 .op_name = "OP_READ",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001060 },
1061 [OP_READDIR] = {
1062 .op_func = (nfsd4op_func)nfsd4_readdir,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001063 .op_name = "OP_READDIR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001064 },
1065 [OP_READLINK] = {
1066 .op_func = (nfsd4op_func)nfsd4_readlink,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001067 .op_name = "OP_READLINK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001068 },
1069 [OP_REMOVE] = {
1070 .op_func = (nfsd4op_func)nfsd4_remove,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001071 .op_name = "OP_REMOVE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001072 },
1073 [OP_RENAME] = {
Benny Halevyb001a1b2008-07-02 11:15:03 +03001074 .op_name = "OP_RENAME",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001075 .op_func = (nfsd4op_func)nfsd4_rename,
1076 },
1077 [OP_RENEW] = {
1078 .op_func = (nfsd4op_func)nfsd4_renew,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001079 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001080 .op_name = "OP_RENEW",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001081 },
1082 [OP_RESTOREFH] = {
1083 .op_func = (nfsd4op_func)nfsd4_restorefh,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001084 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001085 .op_name = "OP_RESTOREFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001086 },
1087 [OP_SAVEFH] = {
1088 .op_func = (nfsd4op_func)nfsd4_savefh,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001089 .op_name = "OP_SAVEFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001090 },
Andy Adamsondcb488a32007-07-17 04:04:51 -07001091 [OP_SECINFO] = {
1092 .op_func = (nfsd4op_func)nfsd4_secinfo,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001093 .op_name = "OP_SECINFO",
Andy Adamsondcb488a32007-07-17 04:04:51 -07001094 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001095 [OP_SETATTR] = {
1096 .op_func = (nfsd4op_func)nfsd4_setattr,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001097 .op_name = "OP_SETATTR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001098 },
1099 [OP_SETCLIENTID] = {
1100 .op_func = (nfsd4op_func)nfsd4_setclientid,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001101 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001102 .op_name = "OP_SETCLIENTID",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001103 },
1104 [OP_SETCLIENTID_CONFIRM] = {
1105 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001106 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001107 .op_name = "OP_SETCLIENTID_CONFIRM",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001108 },
1109 [OP_VERIFY] = {
1110 .op_func = (nfsd4op_func)nfsd4_verify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001111 .op_name = "OP_VERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001112 },
1113 [OP_WRITE] = {
1114 .op_func = (nfsd4op_func)nfsd4_write,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001115 .op_name = "OP_WRITE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001116 },
1117 [OP_RELEASE_LOCKOWNER] = {
1118 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001119 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001120 .op_name = "OP_RELEASE_LOCKOWNER",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001121 },
1122};
1123
Adrian Bunkf1c7f792008-08-08 19:26:42 +03001124static const char *nfsd4_op_name(unsigned opnum)
Benny Halevyb001a1b2008-07-02 11:15:03 +03001125{
1126 if (opnum < ARRAY_SIZE(nfsd4_ops))
1127 return nfsd4_ops[opnum].op_name;
1128 return "unknown_operation";
1129}
1130
Linus Torvalds1da177e2005-04-16 15:20:36 -07001131#define nfs4svc_decode_voidargs NULL
1132#define nfs4svc_release_void NULL
1133#define nfsd4_voidres nfsd4_voidargs
1134#define nfs4svc_release_compound NULL
1135struct nfsd4_voidargs { int dummy; };
1136
1137#define PROC(name, argt, rest, relt, cache, respsize) \
1138 { (svc_procfunc) nfsd4_proc_##name, \
1139 (kxdrproc_t) nfs4svc_decode_##argt##args, \
1140 (kxdrproc_t) nfs4svc_encode_##rest##res, \
1141 (kxdrproc_t) nfs4svc_release_##relt, \
1142 sizeof(struct nfsd4_##argt##args), \
1143 sizeof(struct nfsd4_##rest##res), \
1144 0, \
1145 cache, \
1146 respsize, \
1147 }
1148
1149/*
1150 * TODO: At the present time, the NFSv4 server does not do XID caching
1151 * of requests. Implementing XID caching would not be a serious problem,
1152 * although it would require a mild change in interfaces since one
1153 * doesn't know whether an NFSv4 request is idempotent until after the
1154 * XDR decode. However, XID caching totally confuses pynfs (Peter
1155 * Astrand's regression testsuite for NFSv4 servers), which reuses
1156 * XID's liberally, so I've left it unimplemented until pynfs generates
1157 * better XID's.
1158 */
1159static struct svc_procedure nfsd_procedures4[2] = {
1160 PROC(null, void, void, void, RC_NOCACHE, 1),
NeilBrown7775f4c2006-04-10 22:55:20 -07001161 PROC(compound, compound, compound, compound, RC_NOCACHE, NFSD_BUFSIZE/4)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001162};
1163
1164struct svc_version nfsd_version4 = {
1165 .vs_vers = 4,
1166 .vs_nproc = 2,
1167 .vs_proc = nfsd_procedures4,
1168 .vs_dispatch = nfsd_dispatch,
1169 .vs_xdrsize = NFS4_SVC_XDRSIZE,
1170};
1171
1172/*
1173 * Local variables:
1174 * c-basic-offset: 8
1175 * End:
1176 */