blob: e206053433e3cefcda5ceca21144ee0f7047dcce [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 Adamsondcb488a2007-07-17 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
Andy Adamson60adfc52009-04-03 08:28:50 +0300165static void
166copy_clientid(clientid_t *clid, struct nfsd4_session *session)
167{
168 struct nfsd4_sessionid *sid =
169 (struct nfsd4_sessionid *)session->se_sessionid.data;
170
171 clid->cl_boot = sid->clientid.cl_boot;
172 clid->cl_id = sid->clientid.cl_id;
173}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174
J.Bruce Fields71911552006-12-13 00:35:29 -0800175static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800176nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -0800177 struct nfsd4_open *open)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178{
Al Virob37ad282006-10-19 23:28:59 -0700179 __be32 status;
Andy Adamson66689582009-04-03 08:28:45 +0300180 struct nfsd4_compoundres *resp;
181
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182 dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n",
183 (int)open->op_fname.len, open->op_fname.data,
184 open->op_stateowner);
185
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 /* This check required by spec. */
187 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
188 return nfserr_inval;
189
Andy Adamson60adfc52009-04-03 08:28:50 +0300190 if (nfsd4_has_session(cstate))
191 copy_clientid(&open->op_clientid, cstate->session);
192
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 nfs4_lock_state();
194
195 /* check seqid for replay. set nfs4_owner */
Andy Adamson66689582009-04-03 08:28:45 +0300196 resp = rqstp->rq_resp;
197 status = nfsd4_process_open1(&resp->cstate, open);
Al Viroa90b0612006-10-19 23:29:03 -0700198 if (status == nfserr_replay_me) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199 struct nfs4_replay *rp = &open->op_stateowner->so_replay;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800200 fh_put(&cstate->current_fh);
J. Bruce Fieldsa4773c02009-02-02 17:23:10 -0500201 fh_copy_shallow(&cstate->current_fh.fh_handle,
202 &rp->rp_openfh);
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200203 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204 if (status)
205 dprintk("nfsd4_open: replay failed"
206 " restoring previous filehandle\n");
207 else
Al Viroa90b0612006-10-19 23:29:03 -0700208 status = nfserr_replay_me;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209 }
210 if (status)
211 goto out;
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800212
213 /* Openowner is now set, so sequence id will get bumped. Now we need
214 * these checks before we do any creates: */
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800215 status = nfserr_grace;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400216 if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800217 goto out;
218 status = nfserr_no_grace;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400219 if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800220 goto out;
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800221
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222 switch (open->op_claim_type) {
NeilBrown0dd3c192005-06-23 22:02:56 -0700223 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224 case NFS4_OPEN_CLAIM_NULL:
225 /*
226 * (1) set CURRENT_FH to the file being opened,
227 * creating it if necessary, (2) set open->op_cinfo,
228 * (3) set open->op_truncate if the file is to be
229 * truncated after opening, (4) do permission checking.
230 */
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800231 status = do_open_lookup(rqstp, &cstate->current_fh,
232 open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233 if (status)
234 goto out;
235 break;
236 case NFS4_OPEN_CLAIM_PREVIOUS:
J. Bruce Fieldsa5258252006-01-18 17:43:30 -0800237 open->op_stateowner->so_confirmed = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 /*
239 * The CURRENT_FH is already set to the file being
240 * opened. (1) set open->op_cinfo, (2) set
241 * open->op_truncate if the file is to be truncated
242 * after opening, (3) do permission checking.
243 */
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800244 status = do_open_fhandle(rqstp, &cstate->current_fh,
245 open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246 if (status)
247 goto out;
248 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
J. Bruce Fieldsa5258252006-01-18 17:43:30 -0800250 open->op_stateowner->so_confirmed = 1;
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400251 dprintk("NFSD: unsupported OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252 open->op_claim_type);
253 status = nfserr_notsupp;
254 goto out;
255 default:
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400256 dprintk("NFSD: Invalid OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257 open->op_claim_type);
258 status = nfserr_inval;
259 goto out;
260 }
261 /*
262 * nfsd4_process_open2() does the actual opening of the file. If
263 * successful, it (1) truncates the file if open->op_truncate was
264 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
265 */
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800266 status = nfsd4_process_open2(rqstp, &cstate->current_fh, open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267out:
Neil Brownf2327d92005-09-13 01:25:37 -0700268 if (open->op_stateowner) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 nfs4_get_stateowner(open->op_stateowner);
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -0800270 cstate->replay_owner = open->op_stateowner;
Neil Brownf2327d92005-09-13 01:25:37 -0700271 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272 nfs4_unlock_state();
273 return status;
274}
275
276/*
277 * filehandle-manipulating ops.
278 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800279static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800280nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
281 struct svc_fh **getfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800283 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284 return nfserr_nofilehandle;
285
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800286 *getfh = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287 return nfs_ok;
288}
289
J.Bruce Fields71911552006-12-13 00:35:29 -0800290static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800291nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
292 struct nfsd4_putfh *putfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800294 fh_put(&cstate->current_fh);
295 cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
296 memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
297 putfh->pf_fhlen);
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200298 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299}
300
J.Bruce Fields71911552006-12-13 00:35:29 -0800301static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800302nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
303 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304{
Al Virob37ad282006-10-19 23:28:59 -0700305 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800307 fh_put(&cstate->current_fh);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700308 status = exp_pseudoroot(rqstp, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 return status;
310}
311
J.Bruce Fields71911552006-12-13 00:35:29 -0800312static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800313nfsd4_restorefh(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->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317 return nfserr_restorefh;
318
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800319 fh_dup2(&cstate->current_fh, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320 return nfs_ok;
321}
322
J.Bruce Fields71911552006-12-13 00:35:29 -0800323static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800324nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
325 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800327 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328 return nfserr_nofilehandle;
329
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800330 fh_dup2(&cstate->save_fh, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331 return nfs_ok;
332}
333
334/*
335 * misc nfsv4 ops
336 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800337static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800338nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
339 struct nfsd4_access *access)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340{
341 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
342 return nfserr_inval;
343
344 access->ac_resp_access = access->ac_req_access;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800345 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
346 &access->ac_supported);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347}
348
J.Bruce Fields71911552006-12-13 00:35:29 -0800349static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800350nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
351 struct nfsd4_commit *commit)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352{
Al Virob37ad282006-10-19 23:28:59 -0700353 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354
355 u32 *p = (u32 *)commit->co_verf.data;
356 *p++ = nfssvc_boot.tv_sec;
357 *p++ = nfssvc_boot.tv_usec;
358
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800359 status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
360 commit->co_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361 if (status == nfserr_symlink)
362 status = nfserr_inval;
363 return status;
364}
365
Al Virob37ad282006-10-19 23:28:59 -0700366static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800367nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
368 struct nfsd4_create *create)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369{
370 struct svc_fh resfh;
Al Virob37ad282006-10-19 23:28:59 -0700371 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372 dev_t rdev;
373
374 fh_init(&resfh, NFS4_FHSIZE);
375
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200376 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
377 NFSD_MAY_CREATE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378 if (status == nfserr_symlink)
379 status = nfserr_notdir;
380 if (status)
381 return status;
382
383 switch (create->cr_type) {
384 case NF4LNK:
385 /* ugh! we have to null-terminate the linktext, or
386 * vfs_symlink() will choke. it is always safe to
387 * null-terminate by brute force, since at worst we
388 * will overwrite the first byte of the create namelen
389 * in the XDR buffer, which has already been extracted
390 * during XDR decode.
391 */
392 create->cr_linkname[create->cr_linklen] = 0;
393
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800394 status = nfsd_symlink(rqstp, &cstate->current_fh,
395 create->cr_name, create->cr_namelen,
396 create->cr_linkname, create->cr_linklen,
397 &resfh, &create->cr_iattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 break;
399
400 case NF4BLK:
401 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
402 if (MAJOR(rdev) != create->cr_specdata1 ||
403 MINOR(rdev) != create->cr_specdata2)
404 return nfserr_inval;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800405 status = nfsd_create(rqstp, &cstate->current_fh,
406 create->cr_name, create->cr_namelen,
407 &create->cr_iattr, S_IFBLK, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408 break;
409
410 case NF4CHR:
411 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
412 if (MAJOR(rdev) != create->cr_specdata1 ||
413 MINOR(rdev) != create->cr_specdata2)
414 return nfserr_inval;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800415 status = nfsd_create(rqstp, &cstate->current_fh,
416 create->cr_name, create->cr_namelen,
417 &create->cr_iattr,S_IFCHR, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 break;
419
420 case NF4SOCK:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800421 status = nfsd_create(rqstp, &cstate->current_fh,
422 create->cr_name, create->cr_namelen,
423 &create->cr_iattr, S_IFSOCK, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 break;
425
426 case NF4FIFO:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800427 status = nfsd_create(rqstp, &cstate->current_fh,
428 create->cr_name, create->cr_namelen,
429 &create->cr_iattr, S_IFIFO, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 break;
431
432 case NF4DIR:
433 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800434 status = nfsd_create(rqstp, &cstate->current_fh,
435 create->cr_name, create->cr_namelen,
436 &create->cr_iattr, S_IFDIR, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 break;
438
439 default:
440 status = nfserr_badtype;
441 }
442
443 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800444 fh_unlock(&cstate->current_fh);
445 set_change_info(&create->cr_cinfo, &cstate->current_fh);
446 fh_dup2(&cstate->current_fh, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 }
448
449 fh_put(&resfh);
450 return status;
451}
452
J.Bruce Fields71911552006-12-13 00:35:29 -0800453static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800454nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
455 struct nfsd4_getattr *getattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456{
Al Virob37ad282006-10-19 23:28:59 -0700457 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200459 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 if (status)
461 return status;
462
463 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
464 return nfserr_inval;
465
Andy Adamson7e705702009-04-03 08:29:11 +0300466 getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
467 getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
468 getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800470 getattr->ga_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471 return nfs_ok;
472}
473
J.Bruce Fields71911552006-12-13 00:35:29 -0800474static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800475nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
476 struct nfsd4_link *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477{
Al Virob37ad282006-10-19 23:28:59 -0700478 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800480 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 return status;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800482 status = nfsd_link(rqstp, &cstate->current_fh,
483 link->li_name, link->li_namelen, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484 if (!status)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800485 set_change_info(&link->li_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486 return status;
487}
488
Al Virob37ad282006-10-19 23:28:59 -0700489static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800490nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
491 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492{
493 struct svc_fh tmp_fh;
Al Virob37ad282006-10-19 23:28:59 -0700494 __be32 ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495
496 fh_init(&tmp_fh, NFS4_FHSIZE);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700497 ret = exp_pseudoroot(rqstp, &tmp_fh);
498 if (ret)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499 return ret;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800500 if (tmp_fh.fh_dentry == cstate->current_fh.fh_dentry) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 fh_put(&tmp_fh);
502 return nfserr_noent;
503 }
504 fh_put(&tmp_fh);
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800505 return nfsd_lookup(rqstp, &cstate->current_fh,
506 "..", 2, &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_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
511 struct nfsd4_lookup *lookup)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800513 return nfsd_lookup(rqstp, &cstate->current_fh,
514 lookup->lo_name, lookup->lo_len,
515 &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516}
517
J.Bruce Fields71911552006-12-13 00:35:29 -0800518static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800519nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
520 struct nfsd4_read *read)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521{
Al Virob37ad282006-10-19 23:28:59 -0700522 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523
524 /* no need to check permission - this will be done in nfsd_read() */
525
NeilBrown7e06b7f2005-06-23 22:03:13 -0700526 read->rd_filp = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527 if (read->rd_offset >= OFFSET_MAX)
528 return nfserr_inval;
529
530 nfs4_lock_state();
531 /* check stateid */
Benny Halevydd453df2009-04-03 08:28:41 +0300532 if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid,
533 RD_STATE, &read->rd_filp))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
535 goto out;
536 }
NeilBrown7e06b7f2005-06-23 22:03:13 -0700537 if (read->rd_filp)
538 get_file(read->rd_filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539 status = nfs_ok;
540out:
541 nfs4_unlock_state();
542 read->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800543 read->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544 return status;
545}
546
J.Bruce Fields71911552006-12-13 00:35:29 -0800547static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800548nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
549 struct nfsd4_readdir *readdir)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550{
551 u64 cookie = readdir->rd_cookie;
552 static const nfs4_verifier zeroverf;
553
554 /* no need to check permission - this will be done in nfsd_readdir() */
555
556 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
557 return nfserr_inval;
558
Andy Adamson7e705702009-04-03 08:29:11 +0300559 readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
560 readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
561 readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562
563 if ((cookie > ~(u32)0) || (cookie == 1) || (cookie == 2) ||
564 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
565 return nfserr_bad_cookie;
566
567 readdir->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800568 readdir->rd_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_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
574 struct nfsd4_readlink *readlink)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575{
576 readlink->rl_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800577 readlink->rl_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578 return nfs_ok;
579}
580
J.Bruce Fields71911552006-12-13 00:35:29 -0800581static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800582nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
583 struct nfsd4_remove *remove)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584{
Al Virob37ad282006-10-19 23:28:59 -0700585 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400587 if (locks_in_grace())
NeilBrownc815afc2005-06-23 22:03:00 -0700588 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800589 status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
590 remove->rm_name, remove->rm_namelen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700591 if (status == nfserr_symlink)
592 return nfserr_notdir;
593 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800594 fh_unlock(&cstate->current_fh);
595 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596 }
597 return status;
598}
599
J.Bruce Fields71911552006-12-13 00:35:29 -0800600static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800601nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
602 struct nfsd4_rename *rename)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603{
Al Virob37ad282006-10-19 23:28:59 -0700604 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800606 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607 return status;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400608 if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags
NeilBrownc815afc2005-06-23 22:03:00 -0700609 & NFSEXP_NOSUBTREECHECK))
610 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800611 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
612 rename->rn_snamelen, &cstate->current_fh,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613 rename->rn_tname, rename->rn_tnamelen);
614
615 /* the underlying filesystem returns different error's than required
616 * by NFSv4. both save_fh and current_fh have been verified.. */
617 if (status == nfserr_isdir)
618 status = nfserr_exist;
619 else if ((status == nfserr_notdir) &&
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800620 (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) &&
621 S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622 status = nfserr_exist;
623 else if (status == nfserr_symlink)
624 status = nfserr_notdir;
625
626 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800627 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
628 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629 }
630 return status;
631}
632
J.Bruce Fields71911552006-12-13 00:35:29 -0800633static __be32
Andy Adamsondcb488a2007-07-17 04:04:51 -0700634nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
635 struct nfsd4_secinfo *secinfo)
636{
637 struct svc_fh resfh;
638 struct svc_export *exp;
639 struct dentry *dentry;
640 __be32 err;
641
642 fh_init(&resfh, NFS4_FHSIZE);
643 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
644 secinfo->si_name, secinfo->si_namelen,
645 &exp, &dentry);
646 if (err)
647 return err;
648 if (dentry->d_inode == NULL) {
649 exp_put(exp);
650 err = nfserr_noent;
651 } else
652 secinfo->si_exp = exp;
653 dput(dentry);
654 return err;
655}
656
657static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800658nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
659 struct nfsd4_setattr *setattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660{
Al Virob37ad282006-10-19 23:28:59 -0700661 __be32 status = nfs_ok;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
664 nfs4_lock_state();
Benny Halevydd453df2009-04-03 08:28:41 +0300665 status = nfs4_preprocess_stateid_op(cstate,
J. Bruce Fields6150ef02009-02-21 13:36:16 -0800666 &setattr->sa_stateid, WR_STATE, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667 nfs4_unlock_state();
J. Bruce Fields375c5542006-01-18 17:43:33 -0800668 if (status) {
Greg Banks3e3b4802006-10-02 02:17:41 -0700669 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
J. Bruce Fields375c5542006-01-18 17:43:33 -0800670 return status;
671 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672 }
Dave Hansen18f335a2008-02-15 14:37:38 -0800673 status = mnt_want_write(cstate->current_fh.fh_export->ex_path.mnt);
674 if (status)
675 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700676 status = nfs_ok;
677 if (setattr->sa_acl != NULL)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800678 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
679 setattr->sa_acl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680 if (status)
Dave Hansen18f335a2008-02-15 14:37:38 -0800681 goto out;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800682 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683 0, (time_t)0);
Dave Hansen18f335a2008-02-15 14:37:38 -0800684out:
685 mnt_drop_write(cstate->current_fh.fh_export->ex_path.mnt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686 return status;
687}
688
J.Bruce Fields71911552006-12-13 00:35:29 -0800689static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800690nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
691 struct nfsd4_write *write)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692{
693 stateid_t *stateid = &write->wr_stateid;
694 struct file *filp = NULL;
695 u32 *p;
Al Virob37ad282006-10-19 23:28:59 -0700696 __be32 status = nfs_ok;
David Shaw31dec252009-03-05 20:16:14 -0500697 unsigned long cnt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698
699 /* no need to check permission - this will be done in nfsd_write() */
700
701 if (write->wr_offset >= OFFSET_MAX)
702 return nfserr_inval;
703
704 nfs4_lock_state();
Benny Halevydd453df2009-04-03 08:28:41 +0300705 status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp);
NeilBrown7e06b7f2005-06-23 22:03:13 -0700706 if (filp)
707 get_file(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700708 nfs4_unlock_state();
709
J. Bruce Fields375c5542006-01-18 17:43:33 -0800710 if (status) {
711 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
712 return status;
713 }
714
David Shaw31dec252009-03-05 20:16:14 -0500715 cnt = write->wr_buflen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700716 write->wr_how_written = write->wr_stable_how;
717 p = (u32 *)write->wr_verifier.data;
718 *p++ = nfssvc_boot.tv_sec;
719 *p++ = nfssvc_boot.tv_usec;
720
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800721 status = nfsd_write(rqstp, &cstate->current_fh, filp,
722 write->wr_offset, rqstp->rq_vec, write->wr_vlen,
David Shaw31dec252009-03-05 20:16:14 -0500723 &cnt, &write->wr_how_written);
NeilBrown7e06b7f2005-06-23 22:03:13 -0700724 if (filp)
725 fput(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726
David Shaw31dec252009-03-05 20:16:14 -0500727 write->wr_bytes_written = cnt;
728
Linus Torvalds1da177e2005-04-16 15:20:36 -0700729 if (status == nfserr_symlink)
730 status = nfserr_inval;
731 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732}
733
734/* This routine never returns NFS_OK! If there are no other errors, it
735 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
736 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
737 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
738 */
Al Virob37ad282006-10-19 23:28:59 -0700739static __be32
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -0800740_nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800741 struct nfsd4_verify *verify)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700742{
Al Viro2ebbc012006-10-19 23:28:58 -0700743 __be32 *buf, *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744 int count;
Al Virob37ad282006-10-19 23:28:59 -0700745 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700746
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200747 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700748 if (status)
749 return status;
750
Andy Adamson7e705702009-04-03 08:29:11 +0300751 if ((verify->ve_bmval[0] & ~nfsd_suppattrs0(cstate->minorversion))
752 || (verify->ve_bmval[1] & ~nfsd_suppattrs1(cstate->minorversion))
753 || (verify->ve_bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754 return nfserr_attrnotsupp;
755 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
756 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
757 return nfserr_inval;
758 if (verify->ve_attrlen & 3)
759 return nfserr_inval;
760
761 /* count in words:
762 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
763 */
764 count = 4 + (verify->ve_attrlen >> 2);
765 buf = kmalloc(count << 2, GFP_KERNEL);
766 if (!buf)
767 return nfserr_resource;
768
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800769 status = nfsd4_encode_fattr(&cstate->current_fh,
770 cstate->current_fh.fh_export,
771 cstate->current_fh.fh_dentry, buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700772 &count, verify->ve_bmval,
Frank Filz406a7ea2007-11-27 11:34:05 -0800773 rqstp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774
775 /* this means that nfsd4_encode_fattr() ran out of space */
776 if (status == nfserr_resource && count == 0)
777 status = nfserr_not_same;
778 if (status)
779 goto out_kfree;
780
Benny Halevy95ec28c2009-04-03 08:29:08 +0300781 /* skip bitmap */
782 p = buf + 1 + ntohl(buf[0]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700783 status = nfserr_not_same;
784 if (ntohl(*p++) != verify->ve_attrlen)
785 goto out_kfree;
786 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
787 status = nfserr_same;
788
789out_kfree:
790 kfree(buf);
791 return status;
792}
793
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -0800794static __be32
795nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
796 struct nfsd4_verify *verify)
797{
798 __be32 status;
799
800 status = _nfsd4_verify(rqstp, cstate, verify);
801 return status == nfserr_not_same ? nfs_ok : status;
802}
803
804static __be32
805nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
806 struct nfsd4_verify *verify)
807{
808 __be32 status;
809
810 status = _nfsd4_verify(rqstp, cstate, verify);
811 return status == nfserr_same ? nfs_ok : status;
812}
813
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814/*
815 * NULL call.
816 */
Al Viro7111c662006-10-19 23:28:45 -0700817static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700818nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
819{
820 return nfs_ok;
821}
822
Shankar Anande2b20952006-07-10 04:45:44 -0700823static inline void nfsd4_increment_op_stats(u32 opnum)
824{
825 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
826 nfsdstats.nfs4_opcount[opnum]++;
827}
828
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800829typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
830 void *);
Andy Adamsonf9bb94c2009-04-03 08:28:12 +0300831enum nfsd4_op_flags {
832 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
833 ALLOWED_ON_ABSENT_FS = 2 << 0, /* ops processed on absent fs */
834 ALLOWED_AS_FIRST_OP = 3 << 0, /* ops reqired first in compound */
835};
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800836
837struct nfsd4_operation {
838 nfsd4op_func op_func;
839 u32 op_flags;
Benny Halevyb001a1b2008-07-02 11:15:03 +0300840 char *op_name;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800841};
842
843static struct nfsd4_operation nfsd4_ops[];
844
Adrian Bunkf1c7f792008-08-08 19:26:42 +0300845static const char *nfsd4_op_name(unsigned opnum);
Benny Halevyb001a1b2008-07-02 11:15:03 +0300846
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847/*
Andy Adamsonbf864a32009-04-03 08:28:35 +0300848 * This is a replay of a compound for which no cache entry pages
849 * were used. Encode the sequence operation, and if cachethis is FALSE
850 * encode the uncache rep error on the next operation.
851 */
852static __be32
853nfsd4_enc_uncached_replay(struct nfsd4_compoundargs *args,
854 struct nfsd4_compoundres *resp)
855{
856 struct nfsd4_op *op;
857
858 dprintk("--> %s resp->opcnt %d ce_cachethis %u \n", __func__,
859 resp->opcnt, resp->cstate.slot->sl_cache_entry.ce_cachethis);
860
861 /* Encode the replayed sequence operation */
862 BUG_ON(resp->opcnt != 1);
863 op = &args->ops[resp->opcnt - 1];
864 nfsd4_encode_operation(resp, op);
865
866 /*return nfserr_retry_uncached_rep in next operation. */
867 if (resp->cstate.slot->sl_cache_entry.ce_cachethis == 0) {
868 op = &args->ops[resp->opcnt++];
869 op->status = nfserr_retry_uncached_rep;
870 nfsd4_encode_operation(resp, op);
871 }
872 return op->status;
873}
874
875/*
Andy Adamsonf9bb94c2009-04-03 08:28:12 +0300876 * Enforce NFSv4.1 COMPOUND ordering rules.
877 *
878 * TODO:
879 * - enforce NFS4ERR_NOT_ONLY_OP,
880 * - DESTROY_SESSION MUST be the final operation in the COMPOUND request.
881 */
882static bool nfs41_op_ordering_ok(struct nfsd4_compoundargs *args)
883{
884 if (args->minorversion && args->opcnt > 0) {
885 struct nfsd4_op *op = &args->ops[0];
886 return (op->status == nfserr_op_illegal) ||
887 (nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP);
888 }
889 return true;
890}
891
892/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893 * COMPOUND call.
894 */
Al Viro7111c662006-10-19 23:28:45 -0700895static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896nfsd4_proc_compound(struct svc_rqst *rqstp,
897 struct nfsd4_compoundargs *args,
898 struct nfsd4_compoundres *resp)
899{
900 struct nfsd4_op *op;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800901 struct nfsd4_operation *opdesc;
Andy Adamsone354d572009-03-28 11:30:52 +0300902 struct nfsd4_compound_state *cstate = &resp->cstate;
J.Bruce Fieldse5710192006-12-13 00:35:20 -0800903 int slack_bytes;
Al Virob37ad282006-10-19 23:28:59 -0700904 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700905
Linus Torvalds1da177e2005-04-16 15:20:36 -0700906 resp->xbuf = &rqstp->rq_res;
Andy Adamsone354d572009-03-28 11:30:52 +0300907 resp->p = rqstp->rq_res.head[0].iov_base +
908 rqstp->rq_res.head[0].iov_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700909 resp->tagp = resp->p;
910 /* reserve space for: taglen, tag, and opcnt */
911 resp->p += 2 + XDR_QUADLEN(args->taglen);
912 resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
913 resp->taglen = args->taglen;
914 resp->tag = args->tag;
915 resp->opcnt = 0;
916 resp->rqstp = rqstp;
Andy Adamsond87a8ad2009-04-03 08:28:53 +0300917 resp->cstate.minorversion = args->minorversion;
Andy Adamsone354d572009-03-28 11:30:52 +0300918 resp->cstate.replay_owner = NULL;
919 fh_init(&resp->cstate.current_fh, NFS4_FHSIZE);
920 fh_init(&resp->cstate.save_fh, NFS4_FHSIZE);
Andy Adamson2f425872009-04-03 08:27:32 +0300921 /* Use the deferral mechanism only for NFSv4.0 compounds */
922 rqstp->rq_usedeferral = (args->minorversion == 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923
924 /*
925 * According to RFC3010, this takes precedence over all other errors.
926 */
927 status = nfserr_minor_vers_mismatch;
Benny Halevy8daf2202009-04-03 08:28:59 +0300928 if (args->minorversion > nfsd_supported_minorversion)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700929 goto out;
930
Andy Adamsonf9bb94c2009-04-03 08:28:12 +0300931 if (!nfs41_op_ordering_ok(args)) {
932 op = &args->ops[0];
933 op->status = nfserr_sequence_pos;
934 goto encode_op;
935 }
936
Linus Torvalds1da177e2005-04-16 15:20:36 -0700937 status = nfs_ok;
938 while (!status && resp->opcnt < args->opcnt) {
939 op = &args->ops[resp->opcnt++];
940
Benny Halevyb001a1b2008-07-02 11:15:03 +0300941 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
942 resp->opcnt, args->opcnt, op->opnum,
943 nfsd4_op_name(op->opnum));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700944 /*
945 * The XDR decode routines may have pre-set op->status;
946 * for example, if there is a miscellaneous XDR error
947 * it will be set to nfserr_bad_xdr.
948 */
949 if (op->status)
950 goto encode_op;
951
952 /* We must be able to encode a successful response to
953 * this operation, with enough room left over to encode a
954 * failed response to the next operation. If we don't
955 * have enough room, fail with ERR_RESOURCE.
956 */
J.Bruce Fieldse5710192006-12-13 00:35:20 -0800957 slack_bytes = (char *)resp->end - (char *)resp->p;
958 if (slack_bytes < COMPOUND_SLACK_SPACE
959 + COMPOUND_ERR_SLACK_SPACE) {
960 BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700961 op->status = nfserr_resource;
962 goto encode_op;
963 }
964
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800965 opdesc = &nfsd4_ops[op->opnum];
966
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800967 if (!cstate->current_fh.fh_dentry) {
J.Bruce Fields27d630e2006-12-13 00:35:43 -0800968 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -0700969 op->status = nfserr_nofilehandle;
970 goto encode_op;
971 }
J.Bruce Fieldseeac2942006-12-13 00:35:39 -0800972 } else if (cstate->current_fh.fh_export->ex_fslocs.migrated &&
973 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -0700974 op->status = nfserr_moved;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700975 goto encode_op;
976 }
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800977
978 if (opdesc->op_func)
979 op->status = opdesc->op_func(rqstp, cstate, &op->u);
980 else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700981 BUG_ON(op->status == nfs_ok);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700982
983encode_op:
Andy Adamsonda3846a2009-04-03 08:28:22 +0300984 /* Only from SEQUENCE or CREATE_SESSION */
985 if (resp->cstate.status == nfserr_replay_cache) {
986 dprintk("%s NFS4.1 replay from cache\n", __func__);
Andy Adamsonbf864a32009-04-03 08:28:35 +0300987 if (nfsd4_not_cached(resp))
988 status = nfsd4_enc_uncached_replay(args, resp);
989 else
990 status = op->status;
Andy Adamsonda3846a2009-04-03 08:28:22 +0300991 goto out;
992 }
Al Viroa90b0612006-10-19 23:29:03 -0700993 if (op->status == nfserr_replay_me) {
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -0800994 op->replay = &cstate->replay_owner->so_replay;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700995 nfsd4_encode_replay(resp, op);
996 status = op->status = op->replay->rp_status;
997 } else {
998 nfsd4_encode_operation(resp, op);
999 status = op->status;
1000 }
Benny Halevy04077172008-12-15 19:40:49 +02001001
1002 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
1003 args->ops, args->opcnt, resp->opcnt, op->opnum,
1004 be32_to_cpu(status));
1005
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001006 if (cstate->replay_owner) {
1007 nfs4_put_stateowner(cstate->replay_owner);
1008 cstate->replay_owner = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009 }
NeilBrown7e06b7f2005-06-23 22:03:13 -07001010 /* XXX Ugh, we need to get rid of this kind of special case: */
1011 if (op->opnum == OP_READ && op->u.read.rd_filp)
1012 fput(op->u.read.rd_filp);
Shankar Anande2b20952006-07-10 04:45:44 -07001013
1014 nfsd4_increment_op_stats(op->opnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001015 }
Andy Adamson2f425872009-04-03 08:27:32 +03001016 if (!rqstp->rq_usedeferral && status == nfserr_dropit) {
1017 dprintk("%s Dropit - send NFS4ERR_DELAY\n", __func__);
1018 status = nfserr_jukebox;
1019 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001020
Andy Adamsonda3846a2009-04-03 08:28:22 +03001021 resp->cstate.status = status;
Andy Adamsone354d572009-03-28 11:30:52 +03001022 fh_put(&resp->cstate.current_fh);
1023 fh_put(&resp->cstate.save_fh);
1024 BUG_ON(resp->cstate.replay_owner);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001025out:
1026 nfsd4_release_compoundargs(args);
Andy Adamson2f425872009-04-03 08:27:32 +03001027 /* Reset deferral mechanism for RPC deferrals */
1028 rqstp->rq_usedeferral = 1;
J. Bruce Fields3b12cd92008-05-05 17:17:44 -04001029 dprintk("nfsv4 compound returned %d\n", ntohl(status));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001030 return status;
1031}
1032
Benny Halevy20766012009-03-28 11:32:05 +03001033static struct nfsd4_operation nfsd4_ops[] = {
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001034 [OP_ACCESS] = {
1035 .op_func = (nfsd4op_func)nfsd4_access,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001036 .op_name = "OP_ACCESS",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001037 },
1038 [OP_CLOSE] = {
1039 .op_func = (nfsd4op_func)nfsd4_close,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001040 .op_name = "OP_CLOSE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001041 },
1042 [OP_COMMIT] = {
1043 .op_func = (nfsd4op_func)nfsd4_commit,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001044 .op_name = "OP_COMMIT",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001045 },
1046 [OP_CREATE] = {
1047 .op_func = (nfsd4op_func)nfsd4_create,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001048 .op_name = "OP_CREATE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001049 },
1050 [OP_DELEGRETURN] = {
1051 .op_func = (nfsd4op_func)nfsd4_delegreturn,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001052 .op_name = "OP_DELEGRETURN",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001053 },
1054 [OP_GETATTR] = {
1055 .op_func = (nfsd4op_func)nfsd4_getattr,
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001056 .op_flags = ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001057 .op_name = "OP_GETATTR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001058 },
1059 [OP_GETFH] = {
1060 .op_func = (nfsd4op_func)nfsd4_getfh,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001061 .op_name = "OP_GETFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001062 },
1063 [OP_LINK] = {
1064 .op_func = (nfsd4op_func)nfsd4_link,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001065 .op_name = "OP_LINK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001066 },
1067 [OP_LOCK] = {
1068 .op_func = (nfsd4op_func)nfsd4_lock,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001069 .op_name = "OP_LOCK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001070 },
1071 [OP_LOCKT] = {
1072 .op_func = (nfsd4op_func)nfsd4_lockt,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001073 .op_name = "OP_LOCKT",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001074 },
1075 [OP_LOCKU] = {
1076 .op_func = (nfsd4op_func)nfsd4_locku,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001077 .op_name = "OP_LOCKU",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001078 },
1079 [OP_LOOKUP] = {
1080 .op_func = (nfsd4op_func)nfsd4_lookup,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001081 .op_name = "OP_LOOKUP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001082 },
1083 [OP_LOOKUPP] = {
1084 .op_func = (nfsd4op_func)nfsd4_lookupp,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001085 .op_name = "OP_LOOKUPP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001086 },
1087 [OP_NVERIFY] = {
1088 .op_func = (nfsd4op_func)nfsd4_nverify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001089 .op_name = "OP_NVERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001090 },
1091 [OP_OPEN] = {
1092 .op_func = (nfsd4op_func)nfsd4_open,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001093 .op_name = "OP_OPEN",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001094 },
1095 [OP_OPEN_CONFIRM] = {
1096 .op_func = (nfsd4op_func)nfsd4_open_confirm,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001097 .op_name = "OP_OPEN_CONFIRM",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001098 },
1099 [OP_OPEN_DOWNGRADE] = {
1100 .op_func = (nfsd4op_func)nfsd4_open_downgrade,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001101 .op_name = "OP_OPEN_DOWNGRADE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001102 },
1103 [OP_PUTFH] = {
1104 .op_func = (nfsd4op_func)nfsd4_putfh,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001105 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001106 .op_name = "OP_PUTFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001107 },
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001108 [OP_PUTPUBFH] = {
J. Bruce Fieldsa1c8c4d2009-03-09 12:17:29 -04001109 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001110 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001111 .op_name = "OP_PUTPUBFH",
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001112 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001113 [OP_PUTROOTFH] = {
1114 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001115 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001116 .op_name = "OP_PUTROOTFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001117 },
1118 [OP_READ] = {
1119 .op_func = (nfsd4op_func)nfsd4_read,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001120 .op_name = "OP_READ",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001121 },
1122 [OP_READDIR] = {
1123 .op_func = (nfsd4op_func)nfsd4_readdir,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001124 .op_name = "OP_READDIR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001125 },
1126 [OP_READLINK] = {
1127 .op_func = (nfsd4op_func)nfsd4_readlink,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001128 .op_name = "OP_READLINK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001129 },
1130 [OP_REMOVE] = {
1131 .op_func = (nfsd4op_func)nfsd4_remove,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001132 .op_name = "OP_REMOVE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001133 },
1134 [OP_RENAME] = {
Benny Halevyb001a1b2008-07-02 11:15:03 +03001135 .op_name = "OP_RENAME",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001136 .op_func = (nfsd4op_func)nfsd4_rename,
1137 },
1138 [OP_RENEW] = {
1139 .op_func = (nfsd4op_func)nfsd4_renew,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001140 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001141 .op_name = "OP_RENEW",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001142 },
1143 [OP_RESTOREFH] = {
1144 .op_func = (nfsd4op_func)nfsd4_restorefh,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001145 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001146 .op_name = "OP_RESTOREFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001147 },
1148 [OP_SAVEFH] = {
1149 .op_func = (nfsd4op_func)nfsd4_savefh,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001150 .op_name = "OP_SAVEFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001151 },
Andy Adamsondcb488a2007-07-17 04:04:51 -07001152 [OP_SECINFO] = {
1153 .op_func = (nfsd4op_func)nfsd4_secinfo,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001154 .op_name = "OP_SECINFO",
Andy Adamsondcb488a2007-07-17 04:04:51 -07001155 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001156 [OP_SETATTR] = {
1157 .op_func = (nfsd4op_func)nfsd4_setattr,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001158 .op_name = "OP_SETATTR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001159 },
1160 [OP_SETCLIENTID] = {
1161 .op_func = (nfsd4op_func)nfsd4_setclientid,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001162 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001163 .op_name = "OP_SETCLIENTID",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001164 },
1165 [OP_SETCLIENTID_CONFIRM] = {
1166 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001167 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001168 .op_name = "OP_SETCLIENTID_CONFIRM",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001169 },
1170 [OP_VERIFY] = {
1171 .op_func = (nfsd4op_func)nfsd4_verify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001172 .op_name = "OP_VERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001173 },
1174 [OP_WRITE] = {
1175 .op_func = (nfsd4op_func)nfsd4_write,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001176 .op_name = "OP_WRITE",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001177 },
1178 [OP_RELEASE_LOCKOWNER] = {
1179 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001180 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001181 .op_name = "OP_RELEASE_LOCKOWNER",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001182 },
Andy Adamson069b6ad2009-04-03 08:27:58 +03001183
1184 /* NFSv4.1 operations */
1185 [OP_EXCHANGE_ID] = {
1186 .op_func = (nfsd4op_func)nfsd4_exchange_id,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001187 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001188 .op_name = "OP_EXCHANGE_ID",
1189 },
1190 [OP_CREATE_SESSION] = {
1191 .op_func = (nfsd4op_func)nfsd4_create_session,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001192 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001193 .op_name = "OP_CREATE_SESSION",
1194 },
1195 [OP_DESTROY_SESSION] = {
1196 .op_func = (nfsd4op_func)nfsd4_destroy_session,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001197 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001198 .op_name = "OP_DESTROY_SESSION",
1199 },
1200 [OP_SEQUENCE] = {
1201 .op_func = (nfsd4op_func)nfsd4_sequence,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001202 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001203 .op_name = "OP_SEQUENCE",
1204 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001205};
1206
Adrian Bunkf1c7f792008-08-08 19:26:42 +03001207static const char *nfsd4_op_name(unsigned opnum)
Benny Halevyb001a1b2008-07-02 11:15:03 +03001208{
1209 if (opnum < ARRAY_SIZE(nfsd4_ops))
1210 return nfsd4_ops[opnum].op_name;
1211 return "unknown_operation";
1212}
1213
Linus Torvalds1da177e2005-04-16 15:20:36 -07001214#define nfs4svc_decode_voidargs NULL
1215#define nfs4svc_release_void NULL
1216#define nfsd4_voidres nfsd4_voidargs
1217#define nfs4svc_release_compound NULL
1218struct nfsd4_voidargs { int dummy; };
1219
1220#define PROC(name, argt, rest, relt, cache, respsize) \
1221 { (svc_procfunc) nfsd4_proc_##name, \
1222 (kxdrproc_t) nfs4svc_decode_##argt##args, \
1223 (kxdrproc_t) nfs4svc_encode_##rest##res, \
1224 (kxdrproc_t) nfs4svc_release_##relt, \
1225 sizeof(struct nfsd4_##argt##args), \
1226 sizeof(struct nfsd4_##rest##res), \
1227 0, \
1228 cache, \
1229 respsize, \
1230 }
1231
1232/*
1233 * TODO: At the present time, the NFSv4 server does not do XID caching
1234 * of requests. Implementing XID caching would not be a serious problem,
1235 * although it would require a mild change in interfaces since one
1236 * doesn't know whether an NFSv4 request is idempotent until after the
1237 * XDR decode. However, XID caching totally confuses pynfs (Peter
1238 * Astrand's regression testsuite for NFSv4 servers), which reuses
1239 * XID's liberally, so I've left it unimplemented until pynfs generates
1240 * better XID's.
1241 */
1242static struct svc_procedure nfsd_procedures4[2] = {
1243 PROC(null, void, void, void, RC_NOCACHE, 1),
NeilBrown7775f4c2006-04-10 22:55:20 -07001244 PROC(compound, compound, compound, compound, RC_NOCACHE, NFSD_BUFSIZE/4)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001245};
1246
1247struct svc_version nfsd_version4 = {
1248 .vs_vers = 4,
1249 .vs_nproc = 2,
1250 .vs_proc = nfsd_procedures4,
1251 .vs_dispatch = nfsd_dispatch,
1252 .vs_xdrsize = NFS4_SVC_XDRSIZE,
1253};
1254
1255/*
1256 * Local variables:
1257 * c-basic-offset: 8
1258 * End:
1259 */