blob: 896da74ec5634fd92739e0284f5d0768c8f12437 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * Server-side procedures for NFSv4.
3 *
4 * Copyright (c) 2002 The Regents of the University of Michigan.
5 * All rights reserved.
6 *
7 * Kendrick Smith <kmsmith@umich.edu>
8 * Andy Adamson <andros@umich.edu>
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 *
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its
20 * contributors may be used to endorse or promote products derived
21 * from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
26 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
30 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Linus Torvalds1da177e2005-04-16 15:20:36 -070034 */
NeilBrown7e06b7f2005-06-23 22:03:13 -070035#include <linux/file.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090036#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070037
Mi Jinlong58e7b332011-08-28 18:18:56 +080038#include "idmap.h"
Boaz Harrosh9a74af22009-12-03 20:30:56 +020039#include "cache.h"
40#include "xdr4.h"
J. Bruce Fields0a3adad2009-11-04 18:12:35 -050041#include "vfs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070042
43#define NFSDDBG_FACILITY NFSDDBG_PROC
44
Yu Zhiguo3c8e0312009-05-16 16:22:31 +080045static u32 nfsd_attrmask[] = {
46 NFSD_WRITEABLE_ATTRS_WORD0,
47 NFSD_WRITEABLE_ATTRS_WORD1,
48 NFSD_WRITEABLE_ATTRS_WORD2
49};
50
51static u32 nfsd41_ex_attrmask[] = {
52 NFSD_SUPPATTR_EXCLCREAT_WORD0,
53 NFSD_SUPPATTR_EXCLCREAT_WORD1,
54 NFSD_SUPPATTR_EXCLCREAT_WORD2
55};
56
57static __be32
58check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
59 u32 *bmval, u32 *writable)
60{
61 struct dentry *dentry = cstate->current_fh.fh_dentry;
Yu Zhiguo3c8e0312009-05-16 16:22:31 +080062
63 /*
64 * Check about attributes are supported by the NFSv4 server or not.
65 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP.
66 */
67 if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) ||
68 (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) ||
69 (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
70 return nfserr_attrnotsupp;
71
72 /*
Trond Myklebusta06b1262009-08-31 15:16:11 -040073 * Check FATTR4_WORD0_ACL can be supported
Yu Zhiguo3c8e0312009-05-16 16:22:31 +080074 * in current environment or not.
75 */
76 if (bmval[0] & FATTR4_WORD0_ACL) {
77 if (!IS_POSIXACL(dentry->d_inode))
78 return nfserr_attrnotsupp;
79 }
Yu Zhiguo3c8e0312009-05-16 16:22:31 +080080
81 /*
82 * According to spec, read-only attributes return ERR_INVAL.
83 */
84 if (writable) {
85 if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
86 (bmval[2] & ~writable[2]))
87 return nfserr_inval;
88 }
89
90 return nfs_ok;
91}
92
93static __be32
94nfsd4_check_open_attributes(struct svc_rqst *rqstp,
95 struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
96{
97 __be32 status = nfs_ok;
98
99 if (open->op_create == NFS4_OPEN_CREATE) {
100 if (open->op_createmode == NFS4_CREATE_UNCHECKED
101 || open->op_createmode == NFS4_CREATE_GUARDED)
102 status = check_attr_support(rqstp, cstate,
103 open->op_bmval, nfsd_attrmask);
104 else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1)
105 status = check_attr_support(rqstp, cstate,
106 open->op_bmval, nfsd41_ex_attrmask);
107 }
108
109 return status;
110}
111
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800112static int
113is_create_with_attrs(struct nfsd4_open *open)
114{
115 return open->op_create == NFS4_OPEN_CREATE
116 && (open->op_createmode == NFS4_CREATE_UNCHECKED
117 || open->op_createmode == NFS4_CREATE_GUARDED
118 || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1);
119}
120
121/*
122 * if error occurs when setting the acl, just clear the acl bit
123 * in the returned attr bitmap.
124 */
125static void
126do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
127 struct nfs4_acl *acl, u32 *bmval)
128{
129 __be32 status;
130
131 status = nfsd4_set_nfs4_acl(rqstp, fhp, acl);
132 if (status)
133 /*
134 * We should probably fail the whole open at this point,
135 * but we've already created the file, so it's too late;
136 * So this seems the least of evils:
137 */
138 bmval[0] &= ~FATTR4_WORD0_ACL;
139}
140
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141static inline void
142fh_dup2(struct svc_fh *dst, struct svc_fh *src)
143{
144 fh_put(dst);
145 dget(src->fh_dentry);
146 if (src->fh_export)
147 cache_get(&src->fh_export->h);
148 *dst = *src;
149}
150
Al Virob37ad282006-10-19 23:28:59 -0700151static __be32
J. Bruce Fieldsdc730e12006-10-17 00:10:13 -0700152do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153{
Al Virob37ad282006-10-19 23:28:59 -0700154 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155
156 if (open->op_truncate &&
157 !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
158 return nfserr_inval;
159
J. Bruce Fieldsa0432262011-08-25 10:48:39 -0400160 accmode |= NFSD_MAY_READ_IF_EXEC;
161
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200163 accmode |= NFSD_MAY_READ;
J. Bruce Fields9801d8a2006-10-17 00:10:14 -0700164 if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200165 accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC);
J. Bruce Fields57ecb342009-12-01 19:42:57 -0500166 if (open->op_share_deny & NFS4_SHARE_DENY_READ)
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200167 accmode |= NFSD_MAY_WRITE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168
169 status = fh_verify(rqstp, current_fh, S_IFREG, accmode);
170
171 return status;
172}
173
J. Bruce Fieldsaadab6c2011-08-15 16:55:02 -0400174static __be32 nfsd_check_obj_isreg(struct svc_fh *fh)
175{
176 umode_t mode = fh->fh_dentry->d_inode->i_mode;
177
178 if (S_ISREG(mode))
179 return nfs_ok;
180 if (S_ISDIR(mode))
181 return nfserr_isdir;
182 /*
183 * Using err_symlink as our catch-all case may look odd; but
184 * there's no other obvious error for this case in 4.0, and we
185 * happen to know that it will cause the linux v4 client to do
186 * the right thing on attempts to open something other than a
187 * regular file.
188 */
189 return nfserr_symlink;
190}
191
Al Virob37ad282006-10-19 23:28:59 -0700192static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
194{
195 struct svc_fh resfh;
Al Virob37ad282006-10-19 23:28:59 -0700196 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197
198 fh_init(&resfh, NFS4_FHSIZE);
199 open->op_truncate = 0;
200
201 if (open->op_create) {
Benny Halevy79fb54a2009-04-03 08:29:17 +0300202 /* FIXME: check session persistence and pnfs flags.
203 * The nfsv4.1 spec requires the following semantics:
204 *
205 * Persistent | pNFS | Server REQUIRED | Client Allowed
206 * Reply Cache | server | |
207 * -------------+--------+-----------------+--------------------
208 * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
209 * | | | (SHOULD)
210 * | | and EXCLUSIVE4 | or EXCLUSIVE4
211 * | | | (SHOULD NOT)
212 * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
213 * yes | no | GUARDED4 | GUARDED4
214 * yes | yes | GUARDED4 | GUARDED4
215 */
216
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217 /*
218 * Note: create modes (UNCHECKED,GUARDED...) are the same
Mi Jinlongac6721a2011-04-20 17:06:25 +0800219 * in NFSv4 as in v3 except EXCLUSIVE4_1.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220 */
Mi Jinlongac6721a2011-04-20 17:06:25 +0800221 status = do_nfsd_create(rqstp, current_fh, open->op_fname.data,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222 open->op_fname.len, &open->op_iattr,
223 &resfh, open->op_createmode,
Jeff Layton749997e2007-07-31 00:37:51 -0700224 (u32 *)open->op_verf.data,
J. Bruce Fields856121b2011-10-13 11:37:11 -0400225 &open->op_truncate, &open->op_created);
Jeff Layton749997e2007-07-31 00:37:51 -0700226
J. Bruce Fields99f88722009-02-02 15:12:27 -0500227 /*
228 * Following rfc 3530 14.2.16, use the returned bitmask
229 * to indicate which attributes we used to store the
230 * verifier:
Jeff Layton749997e2007-07-31 00:37:51 -0700231 */
232 if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0)
J. Bruce Fields99f88722009-02-02 15:12:27 -0500233 open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS |
Jeff Layton749997e2007-07-31 00:37:51 -0700234 FATTR4_WORD1_TIME_MODIFY);
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800235 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236 status = nfsd_lookup(rqstp, current_fh,
237 open->op_fname.data, open->op_fname.len, &resfh);
238 fh_unlock(current_fh);
J. Bruce Fieldsaadab6c2011-08-15 16:55:02 -0400239 if (status)
240 goto out;
241 status = nfsd_check_obj_isreg(&resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242 }
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800243 if (status)
244 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800246 if (is_create_with_attrs(open) && open->op_acl != NULL)
247 do_set_nfs4_acl(rqstp, &resfh, open->op_acl, open->op_bmval);
248
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800249 set_change_info(&open->op_cinfo, current_fh);
J. Bruce Fields13024b72009-02-02 17:04:03 -0500250 fh_dup2(current_fh, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800252 /* set reply cache */
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400253 fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
J. Bruce Fieldsa4773c082009-02-02 17:23:10 -0500254 &resfh.fh_handle);
J. Bruce Fields856121b2011-10-13 11:37:11 -0400255 if (!open->op_created)
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200256 status = do_open_permission(rqstp, current_fh, open,
257 NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800259out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260 fh_put(&resfh);
261 return status;
262}
263
Al Virob37ad282006-10-19 23:28:59 -0700264static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
266{
Al Virob37ad282006-10-19 23:28:59 -0700267 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 /* We don't know the target directory, and therefore can not
270 * set the change info
271 */
272
273 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
274
275 /* set replay cache */
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400276 fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
J. Bruce Fieldsa4773c082009-02-02 17:23:10 -0500277 &current_fh->fh_handle);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278
279 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
280 (open->op_iattr.ia_size == 0);
281
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200282 status = do_open_permission(rqstp, current_fh, open,
283 NFSD_MAY_OWNER_OVERRIDE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284
285 return status;
286}
287
Andy Adamson60adfc52009-04-03 08:28:50 +0300288static void
289copy_clientid(clientid_t *clid, struct nfsd4_session *session)
290{
291 struct nfsd4_sessionid *sid =
292 (struct nfsd4_sessionid *)session->se_sessionid.data;
293
294 clid->cl_boot = sid->clientid.cl_boot;
295 clid->cl_id = sid->clientid.cl_id;
296}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297
J.Bruce Fields71911552006-12-13 00:35:29 -0800298static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800299nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -0800300 struct nfsd4_open *open)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301{
Al Virob37ad282006-10-19 23:28:59 -0700302 __be32 status;
Andy Adamson66689582009-04-03 08:28:45 +0300303 struct nfsd4_compoundres *resp;
304
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400305 dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306 (int)open->op_fname.len, open->op_fname.data,
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400307 open->op_openowner);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 /* This check required by spec. */
310 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
311 return nfserr_inval;
312
J. Bruce Fieldsb6d2f1c2011-10-10 17:44:19 -0400313 /* We don't yet support WANT bits: */
314 open->op_share_access &= NFS4_SHARE_ACCESS_MASK;
315
J. Bruce Fields856121b2011-10-13 11:37:11 -0400316 open->op_created = 0;
Mi Jinlongab1350b2011-07-14 15:06:26 +0800317 /*
318 * RFC5661 18.51.3
319 * Before RECLAIM_COMPLETE done, server should deny new lock
320 */
321 if (nfsd4_has_session(cstate) &&
322 !cstate->session->se_client->cl_firststate &&
323 open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
324 return nfserr_grace;
325
Andy Adamson60adfc52009-04-03 08:28:50 +0300326 if (nfsd4_has_session(cstate))
327 copy_clientid(&open->op_clientid, cstate->session);
328
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329 nfs4_lock_state();
330
331 /* check seqid for replay. set nfs4_owner */
Andy Adamson66689582009-04-03 08:28:45 +0300332 resp = rqstp->rq_resp;
333 status = nfsd4_process_open1(&resp->cstate, open);
Al Viroa90b0612006-10-19 23:29:03 -0700334 if (status == nfserr_replay_me) {
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400335 struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800336 fh_put(&cstate->current_fh);
J. Bruce Fieldsa4773c082009-02-02 17:23:10 -0500337 fh_copy_shallow(&cstate->current_fh.fh_handle,
338 &rp->rp_openfh);
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200339 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340 if (status)
341 dprintk("nfsd4_open: replay failed"
342 " restoring previous filehandle\n");
343 else
Al Viroa90b0612006-10-19 23:29:03 -0700344 status = nfserr_replay_me;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 }
346 if (status)
347 goto out;
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800348
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800349 status = nfsd4_check_open_attributes(rqstp, cstate, open);
350 if (status)
351 goto out;
352
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800353 /* Openowner is now set, so sequence id will get bumped. Now we need
354 * these checks before we do any creates: */
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800355 status = nfserr_grace;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400356 if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800357 goto out;
358 status = nfserr_no_grace;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400359 if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800360 goto out;
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800361
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362 switch (open->op_claim_type) {
NeilBrown0dd3c192005-06-23 22:02:56 -0700363 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 case NFS4_OPEN_CLAIM_NULL:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800365 status = do_open_lookup(rqstp, &cstate->current_fh,
366 open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 if (status)
368 goto out;
369 break;
370 case NFS4_OPEN_CLAIM_PREVIOUS:
J. Bruce Fieldsdad1c062011-09-12 12:24:13 -0400371 open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
Mi Jinlong0cf99b92011-11-23 10:48:40 +0800372 status = nfs4_check_open_reclaim(&open->op_clientid);
373 if (status)
374 goto out;
J. Bruce Fields8b289b22011-10-19 11:52:12 -0400375 case NFS4_OPEN_CLAIM_FH:
376 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800377 status = do_open_fhandle(rqstp, &cstate->current_fh,
378 open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 if (status)
380 goto out;
381 break;
J. Bruce Fields8b289b22011-10-19 11:52:12 -0400382 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
J. Bruce Fieldsdad1c062011-09-12 12:24:13 -0400384 open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400385 dprintk("NFSD: unsupported OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386 open->op_claim_type);
387 status = nfserr_notsupp;
388 goto out;
389 default:
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400390 dprintk("NFSD: Invalid OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391 open->op_claim_type);
392 status = nfserr_inval;
393 goto out;
394 }
395 /*
396 * nfsd4_process_open2() does the actual opening of the file. If
397 * successful, it (1) truncates the file if open->op_truncate was
398 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
399 */
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800400 status = nfsd4_process_open2(rqstp, &cstate->current_fh, open);
J. Bruce Fields856121b2011-10-13 11:37:11 -0400401 WARN_ON(status && open->op_created);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402out:
J. Bruce Fieldsd29b20c2011-10-13 15:12:59 -0400403 nfsd4_cleanup_open_state(open, status);
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400404 if (open->op_openowner)
405 cstate->replay_owner = &open->op_openowner->oo_owner;
J. Bruce Fields7c13f342011-08-30 22:15:47 -0400406 else
J. Bruce Fields5ec094c2011-08-30 17:02:48 -0400407 nfs4_unlock_state();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408 return status;
409}
410
411/*
412 * filehandle-manipulating ops.
413 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800414static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800415nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
416 struct svc_fh **getfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800418 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419 return nfserr_nofilehandle;
420
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800421 *getfh = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 return nfs_ok;
423}
424
J.Bruce Fields71911552006-12-13 00:35:29 -0800425static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800426nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
427 struct nfsd4_putfh *putfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800429 fh_put(&cstate->current_fh);
430 cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
431 memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
432 putfh->pf_fhlen);
J. Bruce Fields68d93182011-04-08 17:00:50 -0400433 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434}
435
J.Bruce Fields71911552006-12-13 00:35:29 -0800436static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800437nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
438 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439{
Al Virob37ad282006-10-19 23:28:59 -0700440 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800442 fh_put(&cstate->current_fh);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700443 status = exp_pseudoroot(rqstp, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444 return status;
445}
446
J.Bruce Fields71911552006-12-13 00:35:29 -0800447static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800448nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
449 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800451 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452 return nfserr_restorefh;
453
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800454 fh_dup2(&cstate->current_fh, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455 return nfs_ok;
456}
457
J.Bruce Fields71911552006-12-13 00:35:29 -0800458static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800459nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
460 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800462 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463 return nfserr_nofilehandle;
464
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800465 fh_dup2(&cstate->save_fh, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466 return nfs_ok;
467}
468
469/*
470 * misc nfsv4 ops
471 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800472static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800473nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
474 struct nfsd4_access *access)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475{
476 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
477 return nfserr_inval;
478
479 access->ac_resp_access = access->ac_req_access;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800480 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
481 &access->ac_supported);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482}
483
J.Bruce Fields71911552006-12-13 00:35:29 -0800484static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800485nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
486 struct nfsd4_commit *commit)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488 u32 *p = (u32 *)commit->co_verf.data;
489 *p++ = nfssvc_boot.tv_sec;
490 *p++ = nfssvc_boot.tv_usec;
491
J. Bruce Fields75c096f2011-08-15 18:39:32 -0400492 return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800493 commit->co_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494}
495
Al Virob37ad282006-10-19 23:28:59 -0700496static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800497nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
498 struct nfsd4_create *create)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499{
500 struct svc_fh resfh;
Al Virob37ad282006-10-19 23:28:59 -0700501 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502 dev_t rdev;
503
504 fh_init(&resfh, NFS4_FHSIZE);
505
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200506 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
507 NFSD_MAY_CREATE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700508 if (status)
509 return status;
510
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800511 status = check_attr_support(rqstp, cstate, create->cr_bmval,
512 nfsd_attrmask);
513 if (status)
514 return status;
515
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 switch (create->cr_type) {
517 case NF4LNK:
518 /* ugh! we have to null-terminate the linktext, or
519 * vfs_symlink() will choke. it is always safe to
520 * null-terminate by brute force, since at worst we
521 * will overwrite the first byte of the create namelen
522 * in the XDR buffer, which has already been extracted
523 * during XDR decode.
524 */
525 create->cr_linkname[create->cr_linklen] = 0;
526
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800527 status = nfsd_symlink(rqstp, &cstate->current_fh,
528 create->cr_name, create->cr_namelen,
529 create->cr_linkname, create->cr_linklen,
530 &resfh, &create->cr_iattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531 break;
532
533 case NF4BLK:
534 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
535 if (MAJOR(rdev) != create->cr_specdata1 ||
536 MINOR(rdev) != create->cr_specdata2)
537 return nfserr_inval;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800538 status = nfsd_create(rqstp, &cstate->current_fh,
539 create->cr_name, create->cr_namelen,
540 &create->cr_iattr, S_IFBLK, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541 break;
542
543 case NF4CHR:
544 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
545 if (MAJOR(rdev) != create->cr_specdata1 ||
546 MINOR(rdev) != create->cr_specdata2)
547 return nfserr_inval;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800548 status = nfsd_create(rqstp, &cstate->current_fh,
549 create->cr_name, create->cr_namelen,
550 &create->cr_iattr,S_IFCHR, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551 break;
552
553 case NF4SOCK:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800554 status = nfsd_create(rqstp, &cstate->current_fh,
555 create->cr_name, create->cr_namelen,
556 &create->cr_iattr, S_IFSOCK, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557 break;
558
559 case NF4FIFO:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800560 status = nfsd_create(rqstp, &cstate->current_fh,
561 create->cr_name, create->cr_namelen,
562 &create->cr_iattr, S_IFIFO, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563 break;
564
565 case NF4DIR:
566 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800567 status = nfsd_create(rqstp, &cstate->current_fh,
568 create->cr_name, create->cr_namelen,
569 &create->cr_iattr, S_IFDIR, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570 break;
571
572 default:
573 status = nfserr_badtype;
574 }
575
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800576 if (status)
577 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800579 if (create->cr_acl != NULL)
580 do_set_nfs4_acl(rqstp, &resfh, create->cr_acl,
581 create->cr_bmval);
582
583 fh_unlock(&cstate->current_fh);
584 set_change_info(&create->cr_cinfo, &cstate->current_fh);
585 fh_dup2(&cstate->current_fh, &resfh);
586out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587 fh_put(&resfh);
588 return status;
589}
590
J.Bruce Fields71911552006-12-13 00:35:29 -0800591static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800592nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
593 struct nfsd4_getattr *getattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594{
Al Virob37ad282006-10-19 23:28:59 -0700595 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200597 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598 if (status)
599 return status;
600
601 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
602 return nfserr_inval;
603
Andy Adamson7e705702009-04-03 08:29:11 +0300604 getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
605 getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
606 getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700607
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800608 getattr->ga_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609 return nfs_ok;
610}
611
J.Bruce Fields71911552006-12-13 00:35:29 -0800612static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800613nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
614 struct nfsd4_link *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615{
Al Virob37ad282006-10-19 23:28:59 -0700616 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800618 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700619 return status;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800620 status = nfsd_link(rqstp, &cstate->current_fh,
621 link->li_name, link->li_namelen, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622 if (!status)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800623 set_change_info(&link->li_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624 return status;
625}
626
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500627static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628{
629 struct svc_fh tmp_fh;
Al Virob37ad282006-10-19 23:28:59 -0700630 __be32 ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700631
632 fh_init(&tmp_fh, NFS4_FHSIZE);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700633 ret = exp_pseudoroot(rqstp, &tmp_fh);
634 if (ret)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700635 return ret;
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500636 if (tmp_fh.fh_dentry == fh->fh_dentry) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700637 fh_put(&tmp_fh);
638 return nfserr_noent;
639 }
640 fh_put(&tmp_fh);
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500641 return nfsd_lookup(rqstp, fh, "..", 2, fh);
642}
643
644static __be32
645nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
646 void *arg)
647{
648 return nfsd4_do_lookupp(rqstp, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649}
650
J.Bruce Fields71911552006-12-13 00:35:29 -0800651static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800652nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
653 struct nfsd4_lookup *lookup)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700654{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800655 return nfsd_lookup(rqstp, &cstate->current_fh,
656 lookup->lo_name, lookup->lo_len,
657 &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658}
659
J.Bruce Fields71911552006-12-13 00:35:29 -0800660static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800661nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
662 struct nfsd4_read *read)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663{
Al Virob37ad282006-10-19 23:28:59 -0700664 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665
666 /* no need to check permission - this will be done in nfsd_read() */
667
NeilBrown7e06b7f2005-06-23 22:03:13 -0700668 read->rd_filp = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669 if (read->rd_offset >= OFFSET_MAX)
670 return nfserr_inval;
671
672 nfs4_lock_state();
673 /* check stateid */
Benny Halevydd453df2009-04-03 08:28:41 +0300674 if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid,
675 RD_STATE, &read->rd_filp))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700676 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
677 goto out;
678 }
NeilBrown7e06b7f2005-06-23 22:03:13 -0700679 if (read->rd_filp)
680 get_file(read->rd_filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681 status = nfs_ok;
682out:
683 nfs4_unlock_state();
684 read->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800685 read->rd_fhp = &cstate->current_fh;
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_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
691 struct nfsd4_readdir *readdir)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692{
693 u64 cookie = readdir->rd_cookie;
694 static const nfs4_verifier zeroverf;
695
696 /* no need to check permission - this will be done in nfsd_readdir() */
697
698 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
699 return nfserr_inval;
700
Andy Adamson7e705702009-04-03 08:29:11 +0300701 readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
702 readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
703 readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700704
Bernd Schubert832023b2011-08-08 17:38:08 +0200705 if ((cookie == 1) || (cookie == 2) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -0700706 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
707 return nfserr_bad_cookie;
708
709 readdir->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800710 readdir->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700711 return nfs_ok;
712}
713
J.Bruce Fields71911552006-12-13 00:35:29 -0800714static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800715nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
716 struct nfsd4_readlink *readlink)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700717{
718 readlink->rl_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800719 readlink->rl_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720 return nfs_ok;
721}
722
J.Bruce Fields71911552006-12-13 00:35:29 -0800723static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800724nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
725 struct nfsd4_remove *remove)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726{
Al Virob37ad282006-10-19 23:28:59 -0700727 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700728
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400729 if (locks_in_grace())
NeilBrownc815afc2005-06-23 22:03:00 -0700730 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800731 status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
732 remove->rm_name, remove->rm_namelen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800734 fh_unlock(&cstate->current_fh);
735 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736 }
737 return status;
738}
739
J.Bruce Fields71911552006-12-13 00:35:29 -0800740static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800741nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
742 struct nfsd4_rename *rename)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700743{
Al Virob37ad282006-10-19 23:28:59 -0700744 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700745
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800746 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747 return status;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400748 if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags
NeilBrownc815afc2005-06-23 22:03:00 -0700749 & NFSEXP_NOSUBTREECHECK))
750 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800751 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
752 rename->rn_snamelen, &cstate->current_fh,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700753 rename->rn_tname, rename->rn_tnamelen);
754
755 /* the underlying filesystem returns different error's than required
756 * by NFSv4. both save_fh and current_fh have been verified.. */
757 if (status == nfserr_isdir)
758 status = nfserr_exist;
759 else if ((status == nfserr_notdir) &&
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800760 (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) &&
761 S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762 status = nfserr_exist;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700763
764 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800765 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
766 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700767 }
768 return status;
769}
770
J.Bruce Fields71911552006-12-13 00:35:29 -0800771static __be32
Andy Adamsondcb488a32007-07-17 04:04:51 -0700772nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
773 struct nfsd4_secinfo *secinfo)
774{
775 struct svc_fh resfh;
776 struct svc_export *exp;
777 struct dentry *dentry;
778 __be32 err;
779
780 fh_init(&resfh, NFS4_FHSIZE);
J. Bruce Fields29a78a32011-04-09 11:28:53 -0400781 err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC);
782 if (err)
783 return err;
Andy Adamsondcb488a32007-07-17 04:04:51 -0700784 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
785 secinfo->si_name, secinfo->si_namelen,
786 &exp, &dentry);
787 if (err)
788 return err;
789 if (dentry->d_inode == NULL) {
790 exp_put(exp);
791 err = nfserr_noent;
792 } else
793 secinfo->si_exp = exp;
794 dput(dentry);
J. Bruce Fields56560b92010-12-16 09:57:15 -0500795 if (cstate->minorversion)
796 /* See rfc 5661 section 2.6.3.1.1.8 */
797 fh_put(&cstate->current_fh);
Andy Adamsondcb488a32007-07-17 04:04:51 -0700798 return err;
799}
800
801static __be32
J. Bruce Fields04f4ad12010-12-16 09:51:13 -0500802nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
803 struct nfsd4_secinfo_no_name *sin)
804{
805 __be32 err;
806
807 switch (sin->sin_style) {
808 case NFS4_SECINFO_STYLE4_CURRENT_FH:
809 break;
810 case NFS4_SECINFO_STYLE4_PARENT:
811 err = nfsd4_do_lookupp(rqstp, &cstate->current_fh);
812 if (err)
813 return err;
814 break;
815 default:
816 return nfserr_inval;
817 }
818 exp_get(cstate->current_fh.fh_export);
819 sin->sin_exp = cstate->current_fh.fh_export;
820 fh_put(&cstate->current_fh);
821 return nfs_ok;
822}
823
824static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800825nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
826 struct nfsd4_setattr *setattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700827{
Al Virob37ad282006-10-19 23:28:59 -0700828 __be32 status = nfs_ok;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700829
Linus Torvalds1da177e2005-04-16 15:20:36 -0700830 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
831 nfs4_lock_state();
Benny Halevydd453df2009-04-03 08:28:41 +0300832 status = nfs4_preprocess_stateid_op(cstate,
J. Bruce Fields6150ef02009-02-21 13:36:16 -0800833 &setattr->sa_stateid, WR_STATE, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834 nfs4_unlock_state();
J. Bruce Fields375c5542006-01-18 17:43:33 -0800835 if (status) {
Greg Banks3e3b4802006-10-02 02:17:41 -0700836 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
J. Bruce Fields375c5542006-01-18 17:43:33 -0800837 return status;
838 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700839 }
Al Virobad0dcf2011-11-23 12:03:18 -0500840 status = fh_want_write(&cstate->current_fh);
Dave Hansen18f335a2008-02-15 14:37:38 -0800841 if (status)
842 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843 status = nfs_ok;
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800844
845 status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
846 nfsd_attrmask);
847 if (status)
848 goto out;
849
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850 if (setattr->sa_acl != NULL)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800851 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
852 setattr->sa_acl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853 if (status)
Dave Hansen18f335a2008-02-15 14:37:38 -0800854 goto out;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800855 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856 0, (time_t)0);
Dave Hansen18f335a2008-02-15 14:37:38 -0800857out:
Al Virobad0dcf2011-11-23 12:03:18 -0500858 fh_drop_write(&cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700859 return status;
860}
861
J.Bruce Fields71911552006-12-13 00:35:29 -0800862static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800863nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
864 struct nfsd4_write *write)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865{
866 stateid_t *stateid = &write->wr_stateid;
867 struct file *filp = NULL;
868 u32 *p;
Al Virob37ad282006-10-19 23:28:59 -0700869 __be32 status = nfs_ok;
David Shaw31dec252009-03-05 20:16:14 -0500870 unsigned long cnt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700871
872 /* no need to check permission - this will be done in nfsd_write() */
873
874 if (write->wr_offset >= OFFSET_MAX)
875 return nfserr_inval;
876
877 nfs4_lock_state();
Benny Halevydd453df2009-04-03 08:28:41 +0300878 status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp);
NeilBrown7e06b7f2005-06-23 22:03:13 -0700879 if (filp)
880 get_file(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700881 nfs4_unlock_state();
882
J. Bruce Fields375c5542006-01-18 17:43:33 -0800883 if (status) {
884 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
885 return status;
886 }
887
David Shaw31dec252009-03-05 20:16:14 -0500888 cnt = write->wr_buflen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700889 write->wr_how_written = write->wr_stable_how;
890 p = (u32 *)write->wr_verifier.data;
891 *p++ = nfssvc_boot.tv_sec;
892 *p++ = nfssvc_boot.tv_usec;
893
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800894 status = nfsd_write(rqstp, &cstate->current_fh, filp,
895 write->wr_offset, rqstp->rq_vec, write->wr_vlen,
David Shaw31dec252009-03-05 20:16:14 -0500896 &cnt, &write->wr_how_written);
NeilBrown7e06b7f2005-06-23 22:03:13 -0700897 if (filp)
898 fput(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700899
David Shaw31dec252009-03-05 20:16:14 -0500900 write->wr_bytes_written = cnt;
901
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903}
904
905/* This routine never returns NFS_OK! If there are no other errors, it
906 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
907 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
908 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
909 */
Al Virob37ad282006-10-19 23:28:59 -0700910static __be32
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -0800911_nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800912 struct nfsd4_verify *verify)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913{
Al Viro2ebbc012006-10-19 23:28:58 -0700914 __be32 *buf, *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700915 int count;
Al Virob37ad282006-10-19 23:28:59 -0700916 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200918 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919 if (status)
920 return status;
921
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800922 status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
923 if (status)
924 return status;
925
Linus Torvalds1da177e2005-04-16 15:20:36 -0700926 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
927 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
928 return nfserr_inval;
929 if (verify->ve_attrlen & 3)
930 return nfserr_inval;
931
932 /* count in words:
933 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
934 */
935 count = 4 + (verify->ve_attrlen >> 2);
936 buf = kmalloc(count << 2, GFP_KERNEL);
937 if (!buf)
J. Bruce Fields3e772462011-08-10 19:07:33 -0400938 return nfserr_jukebox;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700939
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800940 status = nfsd4_encode_fattr(&cstate->current_fh,
941 cstate->current_fh.fh_export,
942 cstate->current_fh.fh_dentry, buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943 &count, verify->ve_bmval,
Frank Filz406a7ea2007-11-27 11:34:05 -0800944 rqstp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700945
946 /* this means that nfsd4_encode_fattr() ran out of space */
947 if (status == nfserr_resource && count == 0)
948 status = nfserr_not_same;
949 if (status)
950 goto out_kfree;
951
Benny Halevy95ec28c2009-04-03 08:29:08 +0300952 /* skip bitmap */
953 p = buf + 1 + ntohl(buf[0]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700954 status = nfserr_not_same;
955 if (ntohl(*p++) != verify->ve_attrlen)
956 goto out_kfree;
957 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
958 status = nfserr_same;
959
960out_kfree:
961 kfree(buf);
962 return status;
963}
964
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -0800965static __be32
966nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
967 struct nfsd4_verify *verify)
968{
969 __be32 status;
970
971 status = _nfsd4_verify(rqstp, cstate, verify);
972 return status == nfserr_not_same ? nfs_ok : status;
973}
974
975static __be32
976nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
977 struct nfsd4_verify *verify)
978{
979 __be32 status;
980
981 status = _nfsd4_verify(rqstp, cstate, verify);
982 return status == nfserr_same ? nfs_ok : status;
983}
984
Linus Torvalds1da177e2005-04-16 15:20:36 -0700985/*
986 * NULL call.
987 */
Al Viro7111c662006-10-19 23:28:45 -0700988static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700989nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
990{
991 return nfs_ok;
992}
993
Shankar Anande2b20952006-07-10 04:45:44 -0700994static inline void nfsd4_increment_op_stats(u32 opnum)
995{
996 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
997 nfsdstats.nfs4_opcount[opnum]++;
998}
999
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001000typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
1001 void *);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001002typedef u32(*nfsd4op_rsize)(struct svc_rqst *, struct nfsd4_op *op);
1003
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001004enum nfsd4_op_flags {
1005 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
Mi Jinlong5ece3ca2011-02-18 09:08:31 +08001006 ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */
1007 ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */
J. Bruce Fields68d93182011-04-08 17:00:50 -04001008 /* For rfc 5661 section 2.6.3.1.1: */
1009 OP_HANDLES_WRONGSEC = 1 << 3,
1010 OP_IS_PUTFH_LIKE = 1 << 4,
J. Bruce Fields10910062011-01-24 12:11:02 -05001011 /*
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001012 * These are the ops whose result size we estimate before
1013 * encoding, to avoid performing an op then not being able to
1014 * respond or cache a response. This includes writes and setattrs
1015 * as well as the operations usually called "nonidempotent":
1016 */
1017 OP_MODIFIES_SOMETHING = 1 << 5,
1018 /*
1019 * Cache compounds containing these ops in the xid-based drc:
J. Bruce Fields10910062011-01-24 12:11:02 -05001020 * We use the DRC for compounds containing non-idempotent
1021 * operations, *except* those that are 4.1-specific (since
1022 * sessions provide their own EOS), and except for stateful
1023 * operations other than setclientid and setclientid_confirm
1024 * (since sequence numbers provide EOS for open, lock, etc in
1025 * the v4.0 case).
1026 */
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001027 OP_CACHEME = 1 << 6,
1028};
1029
1030struct nfsd4_operation {
1031 nfsd4op_func op_func;
1032 u32 op_flags;
1033 char *op_name;
Mi Jinlong58e7b332011-08-28 18:18:56 +08001034 /* Try to get response size before operation */
1035 nfsd4op_rsize op_rsize_bop;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001036};
1037
1038static struct nfsd4_operation nfsd4_ops[];
1039
Adrian Bunkf1c7f792008-08-08 19:26:42 +03001040static const char *nfsd4_op_name(unsigned opnum);
Benny Halevyb001a1b2008-07-02 11:15:03 +03001041
Linus Torvalds1da177e2005-04-16 15:20:36 -07001042/*
J. Bruce Fields57716352010-04-21 12:27:19 -04001043 * Enforce NFSv4.1 COMPOUND ordering rules:
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001044 *
J. Bruce Fields57716352010-04-21 12:27:19 -04001045 * Also note, enforced elsewhere:
1046 * - SEQUENCE other than as first op results in
1047 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001048 * - BIND_CONN_TO_SESSION must be the only op in its compound.
1049 * (Enforced in nfsd4_bind_conn_to_session().)
J. Bruce Fields57716352010-04-21 12:27:19 -04001050 * - DESTROY_SESSION must be the final operation in a compound, if
1051 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
1052 * (Enforced in nfsd4_destroy_session().)
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001053 */
J. Bruce Fields57716352010-04-21 12:27:19 -04001054static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args)
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001055{
J. Bruce Fields57716352010-04-21 12:27:19 -04001056 struct nfsd4_op *op = &args->ops[0];
1057
1058 /* These ordering requirements don't apply to NFSv4.0: */
1059 if (args->minorversion == 0)
1060 return nfs_ok;
1061 /* This is weird, but OK, not our problem: */
1062 if (args->opcnt == 0)
1063 return nfs_ok;
1064 if (op->status == nfserr_op_illegal)
1065 return nfs_ok;
1066 if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP))
1067 return nfserr_op_not_in_session;
1068 if (op->opnum == OP_SEQUENCE)
1069 return nfs_ok;
1070 if (args->opcnt != 1)
1071 return nfserr_not_only_op;
1072 return nfs_ok;
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001073}
1074
J. Bruce Fields22b03212011-04-09 11:23:24 -04001075static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op)
1076{
1077 return &nfsd4_ops[op->opnum];
1078}
1079
J. Bruce Fields10910062011-01-24 12:11:02 -05001080bool nfsd4_cache_this_op(struct nfsd4_op *op)
1081{
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001082 return OPDESC(op)->op_flags & OP_CACHEME;
J. Bruce Fields10910062011-01-24 12:11:02 -05001083}
1084
J. Bruce Fields68d93182011-04-08 17:00:50 -04001085static bool need_wrongsec_check(struct svc_rqst *rqstp)
1086{
1087 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1088 struct nfsd4_compoundargs *argp = rqstp->rq_argp;
1089 struct nfsd4_op *this = &argp->ops[resp->opcnt - 1];
1090 struct nfsd4_op *next = &argp->ops[resp->opcnt];
1091 struct nfsd4_operation *thisd;
1092 struct nfsd4_operation *nextd;
1093
1094 thisd = OPDESC(this);
1095 /*
1096 * Most ops check wronsec on our own; only the putfh-like ops
1097 * have special rules.
1098 */
1099 if (!(thisd->op_flags & OP_IS_PUTFH_LIKE))
1100 return false;
1101 /*
1102 * rfc 5661 2.6.3.1.1.6: don't bother erroring out a
1103 * put-filehandle operation if we're not going to use the
1104 * result:
1105 */
1106 if (argp->opcnt == resp->opcnt)
1107 return false;
1108
1109 nextd = OPDESC(next);
1110 /*
1111 * Rest of 2.6.3.1.1: certain operations will return WRONGSEC
1112 * errors themselves as necessary; others should check for them
1113 * now:
1114 */
1115 return !(nextd->op_flags & OP_HANDLES_WRONGSEC);
1116}
1117
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001118/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001119 * COMPOUND call.
1120 */
Al Viro7111c662006-10-19 23:28:45 -07001121static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -07001122nfsd4_proc_compound(struct svc_rqst *rqstp,
1123 struct nfsd4_compoundargs *args,
1124 struct nfsd4_compoundres *resp)
1125{
1126 struct nfsd4_op *op;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001127 struct nfsd4_operation *opdesc;
Andy Adamsone354d572009-03-28 11:30:52 +03001128 struct nfsd4_compound_state *cstate = &resp->cstate;
J.Bruce Fieldse5710192006-12-13 00:35:20 -08001129 int slack_bytes;
Mi Jinlong58e7b332011-08-28 18:18:56 +08001130 u32 plen = 0;
Al Virob37ad282006-10-19 23:28:59 -07001131 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001132
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133 resp->xbuf = &rqstp->rq_res;
Andy Adamsone354d572009-03-28 11:30:52 +03001134 resp->p = rqstp->rq_res.head[0].iov_base +
1135 rqstp->rq_res.head[0].iov_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001136 resp->tagp = resp->p;
1137 /* reserve space for: taglen, tag, and opcnt */
1138 resp->p += 2 + XDR_QUADLEN(args->taglen);
1139 resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
1140 resp->taglen = args->taglen;
1141 resp->tag = args->tag;
1142 resp->opcnt = 0;
1143 resp->rqstp = rqstp;
Andy Adamsond87a8ad2009-04-03 08:28:53 +03001144 resp->cstate.minorversion = args->minorversion;
Andy Adamsone354d572009-03-28 11:30:52 +03001145 resp->cstate.replay_owner = NULL;
J. Bruce Fields26c0c752010-04-24 15:35:43 -04001146 resp->cstate.session = NULL;
Andy Adamsone354d572009-03-28 11:30:52 +03001147 fh_init(&resp->cstate.current_fh, NFS4_FHSIZE);
1148 fh_init(&resp->cstate.save_fh, NFS4_FHSIZE);
NeilBrown8ff30fa2010-08-12 17:04:07 +10001149 /*
1150 * Don't use the deferral mechanism for NFSv4; compounds make it
1151 * too hard to avoid non-idempotency problems.
1152 */
1153 rqstp->rq_usedeferral = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001154
1155 /*
1156 * According to RFC3010, this takes precedence over all other errors.
1157 */
1158 status = nfserr_minor_vers_mismatch;
Benny Halevy8daf2202009-04-03 08:28:59 +03001159 if (args->minorversion > nfsd_supported_minorversion)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001160 goto out;
1161
J. Bruce Fields57716352010-04-21 12:27:19 -04001162 status = nfs41_check_op_ordering(args);
1163 if (status) {
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001164 op = &args->ops[0];
J. Bruce Fields57716352010-04-21 12:27:19 -04001165 op->status = status;
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001166 goto encode_op;
1167 }
1168
Linus Torvalds1da177e2005-04-16 15:20:36 -07001169 while (!status && resp->opcnt < args->opcnt) {
1170 op = &args->ops[resp->opcnt++];
1171
Benny Halevyb001a1b2008-07-02 11:15:03 +03001172 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
1173 resp->opcnt, args->opcnt, op->opnum,
1174 nfsd4_op_name(op->opnum));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001175 /*
1176 * The XDR decode routines may have pre-set op->status;
1177 * for example, if there is a miscellaneous XDR error
1178 * it will be set to nfserr_bad_xdr.
1179 */
1180 if (op->status)
1181 goto encode_op;
1182
1183 /* We must be able to encode a successful response to
1184 * this operation, with enough room left over to encode a
1185 * failed response to the next operation. If we don't
1186 * have enough room, fail with ERR_RESOURCE.
1187 */
J.Bruce Fieldse5710192006-12-13 00:35:20 -08001188 slack_bytes = (char *)resp->end - (char *)resp->p;
1189 if (slack_bytes < COMPOUND_SLACK_SPACE
1190 + COMPOUND_ERR_SLACK_SPACE) {
1191 BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001192 op->status = nfserr_resource;
1193 goto encode_op;
1194 }
1195
J. Bruce Fields22b03212011-04-09 11:23:24 -04001196 opdesc = OPDESC(op);
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001197
J.Bruce Fieldsca364312006-12-13 00:35:27 -08001198 if (!cstate->current_fh.fh_dentry) {
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001199 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -07001200 op->status = nfserr_nofilehandle;
1201 goto encode_op;
1202 }
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001203 } else if (cstate->current_fh.fh_export->ex_fslocs.migrated &&
1204 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -07001205 op->status = nfserr_moved;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001206 goto encode_op;
1207 }
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001208
Mi Jinlong58e7b332011-08-28 18:18:56 +08001209 /* If op is non-idempotent */
1210 if (opdesc->op_flags & OP_MODIFIES_SOMETHING) {
1211 plen = opdesc->op_rsize_bop(rqstp, op);
1212 op->status = nfsd4_check_resp_size(resp, plen);
1213 }
1214
1215 if (op->status)
1216 goto encode_op;
1217
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001218 if (opdesc->op_func)
1219 op->status = opdesc->op_func(rqstp, cstate, &op->u);
1220 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07001221 BUG_ON(op->status == nfs_ok);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001222
J. Bruce Fields68d93182011-04-08 17:00:50 -04001223 if (!op->status && need_wrongsec_check(rqstp))
1224 op->status = check_nfsd_access(cstate->current_fh.fh_export, rqstp);
1225
Linus Torvalds1da177e2005-04-16 15:20:36 -07001226encode_op:
Andy Adamson49557cc2009-07-23 19:02:16 -04001227 /* Only from SEQUENCE */
Andy Adamsonda3846a2009-04-03 08:28:22 +03001228 if (resp->cstate.status == nfserr_replay_cache) {
1229 dprintk("%s NFS4.1 replay from cache\n", __func__);
Andy Adamsonabfabf82009-07-23 19:02:18 -04001230 status = op->status;
Andy Adamsonda3846a2009-04-03 08:28:22 +03001231 goto out;
1232 }
Al Viroa90b0612006-10-19 23:29:03 -07001233 if (op->status == nfserr_replay_me) {
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001234 op->replay = &cstate->replay_owner->so_replay;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001235 nfsd4_encode_replay(resp, op);
1236 status = op->status = op->replay->rp_status;
1237 } else {
1238 nfsd4_encode_operation(resp, op);
1239 status = op->status;
1240 }
Benny Halevy04077172008-12-15 19:40:49 +02001241
1242 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
1243 args->ops, args->opcnt, resp->opcnt, op->opnum,
1244 be32_to_cpu(status));
1245
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001246 if (cstate->replay_owner) {
J. Bruce Fields5ec094c2011-08-30 17:02:48 -04001247 nfs4_unlock_state();
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001248 cstate->replay_owner = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001249 }
NeilBrown7e06b7f2005-06-23 22:03:13 -07001250 /* XXX Ugh, we need to get rid of this kind of special case: */
1251 if (op->opnum == OP_READ && op->u.read.rd_filp)
1252 fput(op->u.read.rd_filp);
Shankar Anande2b20952006-07-10 04:45:44 -07001253
1254 nfsd4_increment_op_stats(op->opnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001255 }
1256
Andy Adamsonda3846a2009-04-03 08:28:22 +03001257 resp->cstate.status = status;
Andy Adamsone354d572009-03-28 11:30:52 +03001258 fh_put(&resp->cstate.current_fh);
1259 fh_put(&resp->cstate.save_fh);
1260 BUG_ON(resp->cstate.replay_owner);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001261out:
Andy Adamson2f425872009-04-03 08:27:32 +03001262 /* Reset deferral mechanism for RPC deferrals */
1263 rqstp->rq_usedeferral = 1;
J. Bruce Fields3b12cd92008-05-05 17:17:44 -04001264 dprintk("nfsv4 compound returned %d\n", ntohl(status));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001265 return status;
1266}
1267
Mi Jinlong58e7b332011-08-28 18:18:56 +08001268#define op_encode_hdr_size (2)
1269#define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
1270#define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
1271#define op_encode_change_info_maxsz (5)
1272#define nfs4_fattr_bitmap_maxsz (4)
1273
1274#define op_encode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1275#define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz)
1276
1277#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1278
1279#define op_encode_ace_maxsz (3 + nfs4_owner_maxsz)
1280#define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \
1281 op_encode_ace_maxsz)
1282
1283#define op_encode_channel_attrs_maxsz (6 + 1 + 1)
1284
1285static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1286{
1287 return (op_encode_hdr_size) * sizeof(__be32);
1288}
1289
1290static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1291{
1292 return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32);
1293}
1294
1295static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1296{
1297 return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
1298}
1299
1300static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1301{
1302 return (op_encode_hdr_size + op_encode_change_info_maxsz
1303 + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1304}
1305
1306static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1307{
1308 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1309 * sizeof(__be32);
1310}
1311
1312static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1313{
1314 return (op_encode_hdr_size + op_encode_lock_denied_maxsz)
1315 * sizeof(__be32);
1316}
1317
1318static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1319{
1320 return (op_encode_hdr_size + op_encode_stateid_maxsz
1321 + op_encode_change_info_maxsz + 1
1322 + nfs4_fattr_bitmap_maxsz
1323 + op_encode_delegation_maxsz) * sizeof(__be32);
1324}
1325
1326static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1327{
1328 u32 maxcount = 0, rlen = 0;
1329
1330 maxcount = svc_max_payload(rqstp);
1331 rlen = op->u.read.rd_length;
1332
1333 if (rlen > maxcount)
1334 rlen = maxcount;
1335
1336 return (op_encode_hdr_size + 2) * sizeof(__be32) + rlen;
1337}
1338
1339static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1340{
1341 u32 rlen = op->u.readdir.rd_maxcount;
1342
1343 if (rlen > PAGE_SIZE)
1344 rlen = PAGE_SIZE;
1345
1346 return (op_encode_hdr_size + op_encode_verifier_maxsz)
1347 * sizeof(__be32) + rlen;
1348}
1349
1350static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1351{
1352 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1353 * sizeof(__be32);
1354}
1355
1356static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1357{
1358 return (op_encode_hdr_size + op_encode_change_info_maxsz
1359 + op_encode_change_info_maxsz) * sizeof(__be32);
1360}
1361
1362static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1363{
1364 return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1365}
1366
1367static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1368{
1369 return (op_encode_hdr_size + 2 + 1024) * sizeof(__be32);
1370}
1371
1372static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1373{
1374 return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
1375}
1376
1377static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1378{
1379 return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\
1380 1 + 1 + 0 + /* eir_flags, spr_how, SP4_NONE (for now) */\
1381 2 + /*eir_server_owner.so_minor_id */\
1382 /* eir_server_owner.so_major_id<> */\
1383 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1384 /* eir_server_scope<> */\
1385 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1386 1 + /* eir_server_impl_id array length */\
1387 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32);
1388}
1389
1390static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1391{
1392 return (op_encode_hdr_size + \
1393 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\
1394 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32);
1395}
1396
1397static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1398{
1399 return (op_encode_hdr_size + \
1400 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\
1401 2 + /* csr_sequence, csr_flags */\
1402 op_encode_channel_attrs_maxsz + \
1403 op_encode_channel_attrs_maxsz) * sizeof(__be32);
1404}
1405
Benny Halevy20766012009-03-28 11:32:05 +03001406static struct nfsd4_operation nfsd4_ops[] = {
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001407 [OP_ACCESS] = {
1408 .op_func = (nfsd4op_func)nfsd4_access,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001409 .op_name = "OP_ACCESS",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001410 },
1411 [OP_CLOSE] = {
1412 .op_func = (nfsd4op_func)nfsd4_close,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001413 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001414 .op_name = "OP_CLOSE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001415 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001416 },
1417 [OP_COMMIT] = {
1418 .op_func = (nfsd4op_func)nfsd4_commit,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001419 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001420 .op_name = "OP_COMMIT",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001421 .op_rsize_bop = (nfsd4op_rsize)nfsd4_commit_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001422 },
1423 [OP_CREATE] = {
1424 .op_func = (nfsd4op_func)nfsd4_create,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001425 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001426 .op_name = "OP_CREATE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001427 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001428 },
1429 [OP_DELEGRETURN] = {
1430 .op_func = (nfsd4op_func)nfsd4_delegreturn,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001431 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001432 .op_name = "OP_DELEGRETURN",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001433 .op_rsize_bop = nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001434 },
1435 [OP_GETATTR] = {
1436 .op_func = (nfsd4op_func)nfsd4_getattr,
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001437 .op_flags = ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001438 .op_name = "OP_GETATTR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001439 },
1440 [OP_GETFH] = {
1441 .op_func = (nfsd4op_func)nfsd4_getfh,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001442 .op_name = "OP_GETFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001443 },
1444 [OP_LINK] = {
1445 .op_func = (nfsd4op_func)nfsd4_link,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001446 .op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING
1447 | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001448 .op_name = "OP_LINK",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001449 .op_rsize_bop = (nfsd4op_rsize)nfsd4_link_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001450 },
1451 [OP_LOCK] = {
1452 .op_func = (nfsd4op_func)nfsd4_lock,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001453 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001454 .op_name = "OP_LOCK",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001455 .op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001456 },
1457 [OP_LOCKT] = {
1458 .op_func = (nfsd4op_func)nfsd4_lockt,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001459 .op_name = "OP_LOCKT",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001460 },
1461 [OP_LOCKU] = {
1462 .op_func = (nfsd4op_func)nfsd4_locku,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001463 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001464 .op_name = "OP_LOCKU",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001465 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001466 },
1467 [OP_LOOKUP] = {
1468 .op_func = (nfsd4op_func)nfsd4_lookup,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001469 .op_flags = OP_HANDLES_WRONGSEC,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001470 .op_name = "OP_LOOKUP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001471 },
1472 [OP_LOOKUPP] = {
1473 .op_func = (nfsd4op_func)nfsd4_lookupp,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001474 .op_flags = OP_HANDLES_WRONGSEC,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001475 .op_name = "OP_LOOKUPP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001476 },
1477 [OP_NVERIFY] = {
1478 .op_func = (nfsd4op_func)nfsd4_nverify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001479 .op_name = "OP_NVERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001480 },
1481 [OP_OPEN] = {
1482 .op_func = (nfsd4op_func)nfsd4_open,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001483 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001484 .op_name = "OP_OPEN",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001485 .op_rsize_bop = (nfsd4op_rsize)nfsd4_open_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001486 },
1487 [OP_OPEN_CONFIRM] = {
1488 .op_func = (nfsd4op_func)nfsd4_open_confirm,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001489 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001490 .op_name = "OP_OPEN_CONFIRM",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001491 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001492 },
1493 [OP_OPEN_DOWNGRADE] = {
1494 .op_func = (nfsd4op_func)nfsd4_open_downgrade,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001495 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001496 .op_name = "OP_OPEN_DOWNGRADE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001497 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001498 },
1499 [OP_PUTFH] = {
1500 .op_func = (nfsd4op_func)nfsd4_putfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001501 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
Mi Jinlong58e7b332011-08-28 18:18:56 +08001502 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001503 .op_name = "OP_PUTFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001504 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001505 },
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001506 [OP_PUTPUBFH] = {
J. Bruce Fieldsa1c8c4d2009-03-09 12:17:29 -04001507 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001508 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
Mi Jinlong58e7b332011-08-28 18:18:56 +08001509 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001510 .op_name = "OP_PUTPUBFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001511 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001512 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001513 [OP_PUTROOTFH] = {
1514 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001515 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
Mi Jinlong58e7b332011-08-28 18:18:56 +08001516 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001517 .op_name = "OP_PUTROOTFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001518 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001519 },
1520 [OP_READ] = {
1521 .op_func = (nfsd4op_func)nfsd4_read,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001522 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001523 .op_name = "OP_READ",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001524 .op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001525 },
1526 [OP_READDIR] = {
1527 .op_func = (nfsd4op_func)nfsd4_readdir,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001528 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001529 .op_name = "OP_READDIR",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001530 .op_rsize_bop = (nfsd4op_rsize)nfsd4_readdir_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001531 },
1532 [OP_READLINK] = {
1533 .op_func = (nfsd4op_func)nfsd4_readlink,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001534 .op_name = "OP_READLINK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001535 },
1536 [OP_REMOVE] = {
1537 .op_func = (nfsd4op_func)nfsd4_remove,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001538 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001539 .op_name = "OP_REMOVE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001540 .op_rsize_bop = (nfsd4op_rsize)nfsd4_remove_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001541 },
1542 [OP_RENAME] = {
1543 .op_func = (nfsd4op_func)nfsd4_rename,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001544 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001545 .op_name = "OP_RENAME",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001546 .op_rsize_bop = (nfsd4op_rsize)nfsd4_rename_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001547 },
1548 [OP_RENEW] = {
1549 .op_func = (nfsd4op_func)nfsd4_renew,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001550 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1551 | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001552 .op_name = "OP_RENEW",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001553 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1554
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001555 },
1556 [OP_RESTOREFH] = {
1557 .op_func = (nfsd4op_func)nfsd4_restorefh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001558 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
Mi Jinlong58e7b332011-08-28 18:18:56 +08001559 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001560 .op_name = "OP_RESTOREFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001561 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001562 },
1563 [OP_SAVEFH] = {
1564 .op_func = (nfsd4op_func)nfsd4_savefh,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001565 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001566 .op_name = "OP_SAVEFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001567 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001568 },
Andy Adamsondcb488a32007-07-17 04:04:51 -07001569 [OP_SECINFO] = {
1570 .op_func = (nfsd4op_func)nfsd4_secinfo,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001571 .op_flags = OP_HANDLES_WRONGSEC,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001572 .op_name = "OP_SECINFO",
Andy Adamsondcb488a32007-07-17 04:04:51 -07001573 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001574 [OP_SETATTR] = {
1575 .op_func = (nfsd4op_func)nfsd4_setattr,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001576 .op_name = "OP_SETATTR",
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001577 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001578 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setattr_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001579 },
1580 [OP_SETCLIENTID] = {
1581 .op_func = (nfsd4op_func)nfsd4_setclientid,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001582 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001583 | OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001584 .op_name = "OP_SETCLIENTID",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001585 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setclientid_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001586 },
1587 [OP_SETCLIENTID_CONFIRM] = {
1588 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001589 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001590 | OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001591 .op_name = "OP_SETCLIENTID_CONFIRM",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001592 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001593 },
1594 [OP_VERIFY] = {
1595 .op_func = (nfsd4op_func)nfsd4_verify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001596 .op_name = "OP_VERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001597 },
1598 [OP_WRITE] = {
1599 .op_func = (nfsd4op_func)nfsd4_write,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001600 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001601 .op_name = "OP_WRITE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001602 .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001603 },
1604 [OP_RELEASE_LOCKOWNER] = {
1605 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001606 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1607 | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001608 .op_name = "OP_RELEASE_LOCKOWNER",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001609 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001610 },
Andy Adamson069b6ad2009-04-03 08:27:58 +03001611
1612 /* NFSv4.1 operations */
1613 [OP_EXCHANGE_ID] = {
1614 .op_func = (nfsd4op_func)nfsd4_exchange_id,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001615 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1616 | OP_MODIFIES_SOMETHING,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001617 .op_name = "OP_EXCHANGE_ID",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001618 .op_rsize_bop = (nfsd4op_rsize)nfsd4_exchange_id_rsize,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001619 },
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001620 [OP_BIND_CONN_TO_SESSION] = {
1621 .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001622 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1623 | OP_MODIFIES_SOMETHING,
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001624 .op_name = "OP_BIND_CONN_TO_SESSION",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001625 .op_rsize_bop = (nfsd4op_rsize)nfsd4_bind_conn_to_session_rsize,
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001626 },
Andy Adamson069b6ad2009-04-03 08:27:58 +03001627 [OP_CREATE_SESSION] = {
1628 .op_func = (nfsd4op_func)nfsd4_create_session,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001629 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1630 | OP_MODIFIES_SOMETHING,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001631 .op_name = "OP_CREATE_SESSION",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001632 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_session_rsize,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001633 },
1634 [OP_DESTROY_SESSION] = {
1635 .op_func = (nfsd4op_func)nfsd4_destroy_session,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001636 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1637 | OP_MODIFIES_SOMETHING,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001638 .op_name = "OP_DESTROY_SESSION",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001639 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001640 },
1641 [OP_SEQUENCE] = {
1642 .op_func = (nfsd4op_func)nfsd4_sequence,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001643 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001644 .op_name = "OP_SEQUENCE",
1645 },
Benny Halevy094b5d72011-06-16 11:39:10 -04001646 [OP_DESTROY_CLIENTID] = {
Mi Jinlong345c2842011-10-20 17:51:39 +08001647 .op_func = (nfsd4op_func)nfsd4_destroy_clientid,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001648 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1649 | OP_MODIFIES_SOMETHING,
Benny Halevy094b5d72011-06-16 11:39:10 -04001650 .op_name = "OP_DESTROY_CLIENTID",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001651 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
Benny Halevy094b5d72011-06-16 11:39:10 -04001652 },
J. Bruce Fields4dc6ec02010-04-19 15:11:28 -04001653 [OP_RECLAIM_COMPLETE] = {
1654 .op_func = (nfsd4op_func)nfsd4_reclaim_complete,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001655 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
J. Bruce Fields4dc6ec02010-04-19 15:11:28 -04001656 .op_name = "OP_RECLAIM_COMPLETE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001657 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J. Bruce Fields4dc6ec02010-04-19 15:11:28 -04001658 },
J. Bruce Fields04f4ad12010-12-16 09:51:13 -05001659 [OP_SECINFO_NO_NAME] = {
1660 .op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001661 .op_flags = OP_HANDLES_WRONGSEC,
J. Bruce Fields04f4ad12010-12-16 09:51:13 -05001662 .op_name = "OP_SECINFO_NO_NAME",
1663 },
Bryan Schumaker17456802011-07-13 10:50:48 -04001664 [OP_TEST_STATEID] = {
1665 .op_func = (nfsd4op_func)nfsd4_test_stateid,
1666 .op_flags = ALLOWED_WITHOUT_FH,
1667 .op_name = "OP_TEST_STATEID",
1668 },
Bryan Schumakere1ca12d2011-07-13 11:04:21 -04001669 [OP_FREE_STATEID] = {
1670 .op_func = (nfsd4op_func)nfsd4_free_stateid,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001671 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
Bryan Schumakere1ca12d2011-07-13 11:04:21 -04001672 .op_name = "OP_FREE_STATEID",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001673 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
Bryan Schumakere1ca12d2011-07-13 11:04:21 -04001674 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001675};
1676
Adrian Bunkf1c7f792008-08-08 19:26:42 +03001677static const char *nfsd4_op_name(unsigned opnum)
Benny Halevyb001a1b2008-07-02 11:15:03 +03001678{
1679 if (opnum < ARRAY_SIZE(nfsd4_ops))
1680 return nfsd4_ops[opnum].op_name;
1681 return "unknown_operation";
1682}
1683
Linus Torvalds1da177e2005-04-16 15:20:36 -07001684#define nfsd4_voidres nfsd4_voidargs
Linus Torvalds1da177e2005-04-16 15:20:36 -07001685struct nfsd4_voidargs { int dummy; };
1686
Linus Torvalds1da177e2005-04-16 15:20:36 -07001687static struct svc_procedure nfsd_procedures4[2] = {
Yu Zhiguo0a93a472009-05-19 14:09:54 +08001688 [NFSPROC4_NULL] = {
1689 .pc_func = (svc_procfunc) nfsd4_proc_null,
1690 .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
1691 .pc_argsize = sizeof(struct nfsd4_voidargs),
1692 .pc_ressize = sizeof(struct nfsd4_voidres),
1693 .pc_cachetype = RC_NOCACHE,
1694 .pc_xdrressize = 1,
1695 },
1696 [NFSPROC4_COMPOUND] = {
1697 .pc_func = (svc_procfunc) nfsd4_proc_compound,
1698 .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
1699 .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
1700 .pc_argsize = sizeof(struct nfsd4_compoundargs),
1701 .pc_ressize = sizeof(struct nfsd4_compoundres),
J. Bruce Fields3e98abf2011-07-16 17:15:10 -04001702 .pc_release = nfsd4_release_compoundargs,
Yu Zhiguo0a93a472009-05-19 14:09:54 +08001703 .pc_cachetype = RC_NOCACHE,
1704 .pc_xdrressize = NFSD_BUFSIZE/4,
1705 },
Linus Torvalds1da177e2005-04-16 15:20:36 -07001706};
1707
1708struct svc_version nfsd_version4 = {
1709 .vs_vers = 4,
1710 .vs_nproc = 2,
1711 .vs_proc = nfsd_procedures4,
1712 .vs_dispatch = nfsd_dispatch,
1713 .vs_xdrsize = NFS4_SVC_XDRSIZE,
1714};
1715
1716/*
1717 * Local variables:
1718 * c-basic-offset: 8
1719 * End:
1720 */