blob: 283d77a47120fe20a2940a7fa6eb02e5004e9855 [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
J. Bruce Fields99f88722009-02-02 15:12:27 -0500106 /*
107 * Following rfc 3530 14.2.16, use the returned bitmask
108 * to indicate which attributes we used to store the
109 * verifier:
Jeff Layton749997e2007-07-31 00:37:51 -0700110 */
111 if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0)
J. Bruce Fields99f88722009-02-02 15:12:27 -0500112 open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS |
Jeff Layton749997e2007-07-31 00:37:51 -0700113 FATTR4_WORD1_TIME_MODIFY);
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800114 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115 status = nfsd_lookup(rqstp, current_fh,
116 open->op_fname.data, open->op_fname.len, &resfh);
117 fh_unlock(current_fh);
118 }
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800119 if (status)
120 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800122 set_change_info(&open->op_cinfo, current_fh);
J. Bruce Fields13024b72009-02-02 17:04:03 -0500123 fh_dup2(current_fh, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800125 /* set reply cache */
J. Bruce Fieldsa4773c02009-02-02 17:23:10 -0500126 fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
127 &resfh.fh_handle);
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 */
J. Bruce Fieldsa4773c02009-02-02 17:23:10 -0500153 fh_copy_shallow(&open->op_stateowner->so_replay.rp_openfh,
154 &current_fh->fh_handle);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155
156 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
157 (open->op_iattr.ia_size == 0);
158
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200159 status = do_open_permission(rqstp, current_fh, open,
160 NFSD_MAY_OWNER_OVERRIDE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161
162 return status;
163}
164
165
J.Bruce Fields71911552006-12-13 00:35:29 -0800166static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800167nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -0800168 struct nfsd4_open *open)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169{
Al Virob37ad282006-10-19 23:28:59 -0700170 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171 dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n",
172 (int)open->op_fname.len, open->op_fname.data,
173 open->op_stateowner);
174
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175 /* This check required by spec. */
176 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
177 return nfserr_inval;
178
179 nfs4_lock_state();
180
181 /* check seqid for replay. set nfs4_owner */
182 status = nfsd4_process_open1(open);
Al Viroa90b0612006-10-19 23:29:03 -0700183 if (status == nfserr_replay_me) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184 struct nfs4_replay *rp = &open->op_stateowner->so_replay;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800185 fh_put(&cstate->current_fh);
J. Bruce Fieldsa4773c02009-02-02 17:23:10 -0500186 fh_copy_shallow(&cstate->current_fh.fh_handle,
187 &rp->rp_openfh);
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200188 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189 if (status)
190 dprintk("nfsd4_open: replay failed"
191 " restoring previous filehandle\n");
192 else
Al Viroa90b0612006-10-19 23:29:03 -0700193 status = nfserr_replay_me;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194 }
195 if (status)
196 goto out;
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800197
198 /* Openowner is now set, so sequence id will get bumped. Now we need
199 * these checks before we do any creates: */
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800200 status = nfserr_grace;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400201 if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800202 goto out;
203 status = nfserr_no_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;
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800206
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207 switch (open->op_claim_type) {
NeilBrown0dd3c192005-06-23 22:02:56 -0700208 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
209 status = nfserr_inval;
210 if (open->op_create)
211 goto out;
212 /* fall through */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213 case NFS4_OPEN_CLAIM_NULL:
214 /*
215 * (1) set CURRENT_FH to the file being opened,
216 * creating it if necessary, (2) set open->op_cinfo,
217 * (3) set open->op_truncate if the file is to be
218 * truncated after opening, (4) do permission checking.
219 */
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800220 status = do_open_lookup(rqstp, &cstate->current_fh,
221 open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222 if (status)
223 goto out;
224 break;
225 case NFS4_OPEN_CLAIM_PREVIOUS:
J. Bruce Fieldsa5258252006-01-18 17:43:30 -0800226 open->op_stateowner->so_confirmed = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227 /*
228 * The CURRENT_FH is already set to the file being
229 * opened. (1) set open->op_cinfo, (2) set
230 * open->op_truncate if the file is to be truncated
231 * after opening, (3) do permission checking.
232 */
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800233 status = do_open_fhandle(rqstp, &cstate->current_fh,
234 open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235 if (status)
236 goto out;
237 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
J. Bruce Fieldsa5258252006-01-18 17:43:30 -0800239 open->op_stateowner->so_confirmed = 1;
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400240 dprintk("NFSD: unsupported OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 open->op_claim_type);
242 status = nfserr_notsupp;
243 goto out;
244 default:
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400245 dprintk("NFSD: Invalid OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246 open->op_claim_type);
247 status = nfserr_inval;
248 goto out;
249 }
250 /*
251 * nfsd4_process_open2() does the actual opening of the file. If
252 * successful, it (1) truncates the file if open->op_truncate was
253 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
254 */
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800255 status = nfsd4_process_open2(rqstp, &cstate->current_fh, open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256out:
Neil Brownf2327d92005-09-13 01:25:37 -0700257 if (open->op_stateowner) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258 nfs4_get_stateowner(open->op_stateowner);
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -0800259 cstate->replay_owner = open->op_stateowner;
Neil Brownf2327d92005-09-13 01:25:37 -0700260 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261 nfs4_unlock_state();
262 return status;
263}
264
265/*
266 * filehandle-manipulating ops.
267 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800268static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800269nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
270 struct svc_fh **getfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800272 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 return nfserr_nofilehandle;
274
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800275 *getfh = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276 return nfs_ok;
277}
278
J.Bruce Fields71911552006-12-13 00:35:29 -0800279static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800280nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
281 struct nfsd4_putfh *putfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800283 fh_put(&cstate->current_fh);
284 cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
285 memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
286 putfh->pf_fhlen);
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200287 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288}
289
J.Bruce Fields71911552006-12-13 00:35:29 -0800290static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800291nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
292 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293{
Al Virob37ad282006-10-19 23:28:59 -0700294 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800296 fh_put(&cstate->current_fh);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700297 status = exp_pseudoroot(rqstp, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298 return status;
299}
300
J.Bruce Fields71911552006-12-13 00:35:29 -0800301static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800302nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
303 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800305 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306 return nfserr_restorefh;
307
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800308 fh_dup2(&cstate->current_fh, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 return nfs_ok;
310}
311
J.Bruce Fields71911552006-12-13 00:35:29 -0800312static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800313nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
314 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800316 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317 return nfserr_nofilehandle;
318
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800319 fh_dup2(&cstate->save_fh, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320 return nfs_ok;
321}
322
323/*
324 * misc nfsv4 ops
325 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800326static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800327nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
328 struct nfsd4_access *access)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329{
330 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
331 return nfserr_inval;
332
333 access->ac_resp_access = access->ac_req_access;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800334 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
335 &access->ac_supported);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336}
337
J.Bruce Fields71911552006-12-13 00:35:29 -0800338static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800339nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
340 struct nfsd4_commit *commit)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341{
Al Virob37ad282006-10-19 23:28:59 -0700342 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343
344 u32 *p = (u32 *)commit->co_verf.data;
345 *p++ = nfssvc_boot.tv_sec;
346 *p++ = nfssvc_boot.tv_usec;
347
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800348 status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
349 commit->co_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 if (status == nfserr_symlink)
351 status = nfserr_inval;
352 return status;
353}
354
Al Virob37ad282006-10-19 23:28:59 -0700355static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800356nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
357 struct nfsd4_create *create)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358{
359 struct svc_fh resfh;
Al Virob37ad282006-10-19 23:28:59 -0700360 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361 dev_t rdev;
362
363 fh_init(&resfh, NFS4_FHSIZE);
364
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200365 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
366 NFSD_MAY_CREATE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 if (status == nfserr_symlink)
368 status = nfserr_notdir;
369 if (status)
370 return status;
371
372 switch (create->cr_type) {
373 case NF4LNK:
374 /* ugh! we have to null-terminate the linktext, or
375 * vfs_symlink() will choke. it is always safe to
376 * null-terminate by brute force, since at worst we
377 * will overwrite the first byte of the create namelen
378 * in the XDR buffer, which has already been extracted
379 * during XDR decode.
380 */
381 create->cr_linkname[create->cr_linklen] = 0;
382
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800383 status = nfsd_symlink(rqstp, &cstate->current_fh,
384 create->cr_name, create->cr_namelen,
385 create->cr_linkname, create->cr_linklen,
386 &resfh, &create->cr_iattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387 break;
388
389 case NF4BLK:
390 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
391 if (MAJOR(rdev) != create->cr_specdata1 ||
392 MINOR(rdev) != create->cr_specdata2)
393 return nfserr_inval;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800394 status = nfsd_create(rqstp, &cstate->current_fh,
395 create->cr_name, create->cr_namelen,
396 &create->cr_iattr, S_IFBLK, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397 break;
398
399 case NF4CHR:
400 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
401 if (MAJOR(rdev) != create->cr_specdata1 ||
402 MINOR(rdev) != create->cr_specdata2)
403 return nfserr_inval;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800404 status = nfsd_create(rqstp, &cstate->current_fh,
405 create->cr_name, create->cr_namelen,
406 &create->cr_iattr,S_IFCHR, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407 break;
408
409 case NF4SOCK:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800410 status = nfsd_create(rqstp, &cstate->current_fh,
411 create->cr_name, create->cr_namelen,
412 &create->cr_iattr, S_IFSOCK, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 break;
414
415 case NF4FIFO:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800416 status = nfsd_create(rqstp, &cstate->current_fh,
417 create->cr_name, create->cr_namelen,
418 &create->cr_iattr, S_IFIFO, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419 break;
420
421 case NF4DIR:
422 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800423 status = nfsd_create(rqstp, &cstate->current_fh,
424 create->cr_name, create->cr_namelen,
425 &create->cr_iattr, S_IFDIR, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426 break;
427
428 default:
429 status = nfserr_badtype;
430 }
431
432 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800433 fh_unlock(&cstate->current_fh);
434 set_change_info(&create->cr_cinfo, &cstate->current_fh);
435 fh_dup2(&cstate->current_fh, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436 }
437
438 fh_put(&resfh);
439 return status;
440}
441
J.Bruce Fields71911552006-12-13 00:35:29 -0800442static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800443nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
444 struct nfsd4_getattr *getattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445{
Al Virob37ad282006-10-19 23:28:59 -0700446 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200448 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449 if (status)
450 return status;
451
452 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
453 return nfserr_inval;
454
455 getattr->ga_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0;
456 getattr->ga_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1;
457
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800458 getattr->ga_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 return nfs_ok;
460}
461
J.Bruce Fields71911552006-12-13 00:35:29 -0800462static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800463nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
464 struct nfsd4_link *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465{
Al Virob37ad282006-10-19 23:28:59 -0700466 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800468 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469 return status;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800470 status = nfsd_link(rqstp, &cstate->current_fh,
471 link->li_name, link->li_namelen, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472 if (!status)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800473 set_change_info(&link->li_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 return status;
475}
476
Al Virob37ad282006-10-19 23:28:59 -0700477static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800478nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
479 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480{
481 struct svc_fh tmp_fh;
Al Virob37ad282006-10-19 23:28:59 -0700482 __be32 ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483
484 fh_init(&tmp_fh, NFS4_FHSIZE);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700485 ret = exp_pseudoroot(rqstp, &tmp_fh);
486 if (ret)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487 return ret;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800488 if (tmp_fh.fh_dentry == cstate->current_fh.fh_dentry) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489 fh_put(&tmp_fh);
490 return nfserr_noent;
491 }
492 fh_put(&tmp_fh);
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800493 return nfsd_lookup(rqstp, &cstate->current_fh,
494 "..", 2, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495}
496
J.Bruce Fields71911552006-12-13 00:35:29 -0800497static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800498nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
499 struct nfsd4_lookup *lookup)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800501 return nfsd_lookup(rqstp, &cstate->current_fh,
502 lookup->lo_name, lookup->lo_len,
503 &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504}
505
J.Bruce Fields71911552006-12-13 00:35:29 -0800506static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800507nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
508 struct nfsd4_read *read)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509{
Al Virob37ad282006-10-19 23:28:59 -0700510 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511
512 /* no need to check permission - this will be done in nfsd_read() */
513
NeilBrown7e06b7f2005-06-23 22:03:13 -0700514 read->rd_filp = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515 if (read->rd_offset >= OFFSET_MAX)
516 return nfserr_inval;
517
518 nfs4_lock_state();
519 /* check stateid */
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800520 if ((status = nfs4_preprocess_stateid_op(&cstate->current_fh,
521 &read->rd_stateid,
J. Bruce Fields6150ef02009-02-21 13:36:16 -0800522 RD_STATE, &read->rd_filp))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
524 goto out;
525 }
NeilBrown7e06b7f2005-06-23 22:03:13 -0700526 if (read->rd_filp)
527 get_file(read->rd_filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528 status = nfs_ok;
529out:
530 nfs4_unlock_state();
531 read->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800532 read->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533 return status;
534}
535
J.Bruce Fields71911552006-12-13 00:35:29 -0800536static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800537nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
538 struct nfsd4_readdir *readdir)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539{
540 u64 cookie = readdir->rd_cookie;
541 static const nfs4_verifier zeroverf;
542
543 /* no need to check permission - this will be done in nfsd_readdir() */
544
545 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
546 return nfserr_inval;
547
548 readdir->rd_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0;
549 readdir->rd_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1;
550
551 if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) ||
552 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
553 return nfserr_bad_cookie;
554
555 readdir->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800556 readdir->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557 return nfs_ok;
558}
559
J.Bruce Fields71911552006-12-13 00:35:29 -0800560static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800561nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
562 struct nfsd4_readlink *readlink)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563{
564 readlink->rl_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800565 readlink->rl_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566 return nfs_ok;
567}
568
J.Bruce Fields71911552006-12-13 00:35:29 -0800569static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800570nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
571 struct nfsd4_remove *remove)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572{
Al Virob37ad282006-10-19 23:28:59 -0700573 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400575 if (locks_in_grace())
NeilBrownc815afc2005-06-23 22:03:00 -0700576 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800577 status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
578 remove->rm_name, remove->rm_namelen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 if (status == nfserr_symlink)
580 return nfserr_notdir;
581 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800582 fh_unlock(&cstate->current_fh);
583 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584 }
585 return status;
586}
587
J.Bruce Fields71911552006-12-13 00:35:29 -0800588static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800589nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
590 struct nfsd4_rename *rename)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700591{
Al Virob37ad282006-10-19 23:28:59 -0700592 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800594 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595 return status;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400596 if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags
NeilBrownc815afc2005-06-23 22:03:00 -0700597 & NFSEXP_NOSUBTREECHECK))
598 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800599 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
600 rename->rn_snamelen, &cstate->current_fh,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601 rename->rn_tname, rename->rn_tnamelen);
602
603 /* the underlying filesystem returns different error's than required
604 * by NFSv4. both save_fh and current_fh have been verified.. */
605 if (status == nfserr_isdir)
606 status = nfserr_exist;
607 else if ((status == nfserr_notdir) &&
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800608 (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) &&
609 S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700610 status = nfserr_exist;
611 else if (status == nfserr_symlink)
612 status = nfserr_notdir;
613
614 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800615 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
616 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617 }
618 return status;
619}
620
J.Bruce Fields71911552006-12-13 00:35:29 -0800621static __be32
Andy Adamsondcb488a32007-07-17 04:04:51 -0700622nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
623 struct nfsd4_secinfo *secinfo)
624{
625 struct svc_fh resfh;
626 struct svc_export *exp;
627 struct dentry *dentry;
628 __be32 err;
629
630 fh_init(&resfh, NFS4_FHSIZE);
631 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
632 secinfo->si_name, secinfo->si_namelen,
633 &exp, &dentry);
634 if (err)
635 return err;
636 if (dentry->d_inode == NULL) {
637 exp_put(exp);
638 err = nfserr_noent;
639 } else
640 secinfo->si_exp = exp;
641 dput(dentry);
642 return err;
643}
644
645static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800646nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
647 struct nfsd4_setattr *setattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648{
Al Virob37ad282006-10-19 23:28:59 -0700649 __be32 status = nfs_ok;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700650
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
652 nfs4_lock_state();
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800653 status = nfs4_preprocess_stateid_op(&cstate->current_fh,
J. Bruce Fields6150ef02009-02-21 13:36:16 -0800654 &setattr->sa_stateid, WR_STATE, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655 nfs4_unlock_state();
J. Bruce Fields375c5542006-01-18 17:43:33 -0800656 if (status) {
Greg Banks3e3b4802006-10-02 02:17:41 -0700657 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
J. Bruce Fields375c5542006-01-18 17:43:33 -0800658 return status;
659 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 }
Dave Hansen18f335a2008-02-15 14:37:38 -0800661 status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt);
662 if (status)
663 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664 status = nfs_ok;
665 if (setattr->sa_acl != NULL)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800666 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
667 setattr->sa_acl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668 if (status)
Dave Hansen18f335a2008-02-15 14:37:38 -0800669 goto out;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800670 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700671 0, (time_t)0);
Dave Hansen18f335a2008-02-15 14:37:38 -0800672out:
673 mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674 return status;
675}
676
J.Bruce Fields71911552006-12-13 00:35:29 -0800677static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800678nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
679 struct nfsd4_write *write)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680{
681 stateid_t *stateid = &write->wr_stateid;
682 struct file *filp = NULL;
683 u32 *p;
Al Virob37ad282006-10-19 23:28:59 -0700684 __be32 status = nfs_ok;
David Shaw31dec252009-03-05 20:16:14 -0500685 unsigned long cnt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686
687 /* no need to check permission - this will be done in nfsd_write() */
688
689 if (write->wr_offset >= OFFSET_MAX)
690 return nfserr_inval;
691
692 nfs4_lock_state();
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800693 status = nfs4_preprocess_stateid_op(&cstate->current_fh, stateid,
J. Bruce Fields6150ef02009-02-21 13:36:16 -0800694 WR_STATE, &filp);
NeilBrown7e06b7f2005-06-23 22:03:13 -0700695 if (filp)
696 get_file(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697 nfs4_unlock_state();
698
J. Bruce Fields375c5542006-01-18 17:43:33 -0800699 if (status) {
700 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
701 return status;
702 }
703
David Shaw31dec252009-03-05 20:16:14 -0500704 cnt = write->wr_buflen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705 write->wr_how_written = write->wr_stable_how;
706 p = (u32 *)write->wr_verifier.data;
707 *p++ = nfssvc_boot.tv_sec;
708 *p++ = nfssvc_boot.tv_usec;
709
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800710 status = nfsd_write(rqstp, &cstate->current_fh, filp,
711 write->wr_offset, rqstp->rq_vec, write->wr_vlen,
David Shaw31dec252009-03-05 20:16:14 -0500712 &cnt, &write->wr_how_written);
NeilBrown7e06b7f2005-06-23 22:03:13 -0700713 if (filp)
714 fput(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715
David Shaw31dec252009-03-05 20:16:14 -0500716 write->wr_bytes_written = cnt;
717
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718 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 */