blob: 2ed14dfd00a231e9c813b78b3d728bcdfb849b06 [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"
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +010042#include "current_stateid.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070043
44#define NFSDDBG_FACILITY NFSDDBG_PROC
45
Yu Zhiguo3c8e0312009-05-16 16:22:31 +080046static u32 nfsd_attrmask[] = {
47 NFSD_WRITEABLE_ATTRS_WORD0,
48 NFSD_WRITEABLE_ATTRS_WORD1,
49 NFSD_WRITEABLE_ATTRS_WORD2
50};
51
52static u32 nfsd41_ex_attrmask[] = {
53 NFSD_SUPPATTR_EXCLCREAT_WORD0,
54 NFSD_SUPPATTR_EXCLCREAT_WORD1,
55 NFSD_SUPPATTR_EXCLCREAT_WORD2
56};
57
58static __be32
59check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
60 u32 *bmval, u32 *writable)
61{
62 struct dentry *dentry = cstate->current_fh.fh_dentry;
Yu Zhiguo3c8e0312009-05-16 16:22:31 +080063
64 /*
65 * Check about attributes are supported by the NFSv4 server or not.
66 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP.
67 */
68 if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) ||
69 (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) ||
70 (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
71 return nfserr_attrnotsupp;
72
73 /*
Trond Myklebusta06b1262009-08-31 15:16:11 -040074 * Check FATTR4_WORD0_ACL can be supported
Yu Zhiguo3c8e0312009-05-16 16:22:31 +080075 * in current environment or not.
76 */
77 if (bmval[0] & FATTR4_WORD0_ACL) {
78 if (!IS_POSIXACL(dentry->d_inode))
79 return nfserr_attrnotsupp;
80 }
Yu Zhiguo3c8e0312009-05-16 16:22:31 +080081
82 /*
83 * According to spec, read-only attributes return ERR_INVAL.
84 */
85 if (writable) {
86 if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
87 (bmval[2] & ~writable[2]))
88 return nfserr_inval;
89 }
90
91 return nfs_ok;
92}
93
94static __be32
95nfsd4_check_open_attributes(struct svc_rqst *rqstp,
96 struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
97{
98 __be32 status = nfs_ok;
99
100 if (open->op_create == NFS4_OPEN_CREATE) {
101 if (open->op_createmode == NFS4_CREATE_UNCHECKED
102 || open->op_createmode == NFS4_CREATE_GUARDED)
103 status = check_attr_support(rqstp, cstate,
104 open->op_bmval, nfsd_attrmask);
105 else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1)
106 status = check_attr_support(rqstp, cstate,
107 open->op_bmval, nfsd41_ex_attrmask);
108 }
109
110 return status;
111}
112
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800113static int
114is_create_with_attrs(struct nfsd4_open *open)
115{
116 return open->op_create == NFS4_OPEN_CREATE
117 && (open->op_createmode == NFS4_CREATE_UNCHECKED
118 || open->op_createmode == NFS4_CREATE_GUARDED
119 || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1);
120}
121
122/*
123 * if error occurs when setting the acl, just clear the acl bit
124 * in the returned attr bitmap.
125 */
126static void
127do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
128 struct nfs4_acl *acl, u32 *bmval)
129{
130 __be32 status;
131
132 status = nfsd4_set_nfs4_acl(rqstp, fhp, acl);
133 if (status)
134 /*
135 * We should probably fail the whole open at this point,
136 * but we've already created the file, so it's too late;
137 * So this seems the least of evils:
138 */
139 bmval[0] &= ~FATTR4_WORD0_ACL;
140}
141
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142static inline void
143fh_dup2(struct svc_fh *dst, struct svc_fh *src)
144{
145 fh_put(dst);
146 dget(src->fh_dentry);
147 if (src->fh_export)
148 cache_get(&src->fh_export->h);
149 *dst = *src;
150}
151
Al Virob37ad282006-10-19 23:28:59 -0700152static __be32
J. Bruce Fieldsdc730e12006-10-17 00:10:13 -0700153do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154{
Al Virob37ad282006-10-19 23:28:59 -0700155 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156
157 if (open->op_truncate &&
158 !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
159 return nfserr_inval;
160
J. Bruce Fieldsa0432262011-08-25 10:48:39 -0400161 accmode |= NFSD_MAY_READ_IF_EXEC;
162
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163 if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200164 accmode |= NFSD_MAY_READ;
J. Bruce Fields9801d8a2006-10-17 00:10:14 -0700165 if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200166 accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC);
J. Bruce Fields57ecb342009-12-01 19:42:57 -0500167 if (open->op_share_deny & NFS4_SHARE_DENY_READ)
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200168 accmode |= NFSD_MAY_WRITE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169
170 status = fh_verify(rqstp, current_fh, S_IFREG, accmode);
171
172 return status;
173}
174
J. Bruce Fieldsaadab6c2011-08-15 16:55:02 -0400175static __be32 nfsd_check_obj_isreg(struct svc_fh *fh)
176{
177 umode_t mode = fh->fh_dentry->d_inode->i_mode;
178
179 if (S_ISREG(mode))
180 return nfs_ok;
181 if (S_ISDIR(mode))
182 return nfserr_isdir;
183 /*
184 * Using err_symlink as our catch-all case may look odd; but
185 * there's no other obvious error for this case in 4.0, and we
186 * happen to know that it will cause the linux v4 client to do
187 * the right thing on attempts to open something other than a
188 * regular file.
189 */
190 return nfserr_symlink;
191}
192
Al Virob37ad282006-10-19 23:28:59 -0700193static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194do_open_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
195{
J. Bruce Fields59deeb92012-01-27 16:49:55 -0500196 struct svc_fh *resfh;
Al Virob37ad282006-10-19 23:28:59 -0700197 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198
J. Bruce Fields59deeb92012-01-27 16:49:55 -0500199 resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL);
200 if (!resfh)
201 return nfserr_jukebox;
202 fh_init(resfh, NFS4_FHSIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 open->op_truncate = 0;
204
205 if (open->op_create) {
Benny Halevy79fb54a2009-04-03 08:29:17 +0300206 /* FIXME: check session persistence and pnfs flags.
207 * The nfsv4.1 spec requires the following semantics:
208 *
209 * Persistent | pNFS | Server REQUIRED | Client Allowed
210 * Reply Cache | server | |
211 * -------------+--------+-----------------+--------------------
212 * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
213 * | | | (SHOULD)
214 * | | and EXCLUSIVE4 | or EXCLUSIVE4
215 * | | | (SHOULD NOT)
216 * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
217 * yes | no | GUARDED4 | GUARDED4
218 * yes | yes | GUARDED4 | GUARDED4
219 */
220
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221 /*
222 * Note: create modes (UNCHECKED,GUARDED...) are the same
Mi Jinlongac6721a2011-04-20 17:06:25 +0800223 * in NFSv4 as in v3 except EXCLUSIVE4_1.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224 */
Mi Jinlongac6721a2011-04-20 17:06:25 +0800225 status = do_nfsd_create(rqstp, current_fh, open->op_fname.data,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226 open->op_fname.len, &open->op_iattr,
J. Bruce Fields59deeb92012-01-27 16:49:55 -0500227 resfh, open->op_createmode,
Jeff Layton749997e2007-07-31 00:37:51 -0700228 (u32 *)open->op_verf.data,
J. Bruce Fields856121b2011-10-13 11:37:11 -0400229 &open->op_truncate, &open->op_created);
Jeff Layton749997e2007-07-31 00:37:51 -0700230
J. Bruce Fields99f88722009-02-02 15:12:27 -0500231 /*
232 * Following rfc 3530 14.2.16, use the returned bitmask
233 * to indicate which attributes we used to store the
234 * verifier:
Jeff Layton749997e2007-07-31 00:37:51 -0700235 */
236 if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0)
J. Bruce Fields99f88722009-02-02 15:12:27 -0500237 open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS |
Jeff Layton749997e2007-07-31 00:37:51 -0700238 FATTR4_WORD1_TIME_MODIFY);
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800239 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240 status = nfsd_lookup(rqstp, current_fh,
J. Bruce Fields59deeb92012-01-27 16:49:55 -0500241 open->op_fname.data, open->op_fname.len, resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242 fh_unlock(current_fh);
J. Bruce Fieldsaadab6c2011-08-15 16:55:02 -0400243 if (status)
244 goto out;
J. Bruce Fields59deeb92012-01-27 16:49:55 -0500245 status = nfsd_check_obj_isreg(resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246 }
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800247 if (status)
248 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800250 if (is_create_with_attrs(open) && open->op_acl != NULL)
J. Bruce Fields59deeb92012-01-27 16:49:55 -0500251 do_set_nfs4_acl(rqstp, resfh, open->op_acl, open->op_bmval);
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800252
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800253 /* set reply cache */
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400254 fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
J. Bruce Fields59deeb92012-01-27 16:49:55 -0500255 &resfh->fh_handle);
J. Bruce Fields856121b2011-10-13 11:37:11 -0400256 if (!open->op_created)
J. Bruce Fields59deeb92012-01-27 16:49:55 -0500257 status = do_open_permission(rqstp, resfh, open,
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200258 NFSD_MAY_NOP);
J. Bruce Fields41fd1e42012-01-27 16:26:02 -0500259 set_change_info(&open->op_cinfo, current_fh);
J. Bruce Fields59deeb92012-01-27 16:49:55 -0500260 fh_dup2(current_fh, resfh);
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800261out:
J. Bruce Fields59deeb92012-01-27 16:49:55 -0500262 fh_put(resfh);
263 kfree(resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 return status;
265}
266
Al Virob37ad282006-10-19 23:28:59 -0700267static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open)
269{
Al Virob37ad282006-10-19 23:28:59 -0700270 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272 /* We don't know the target directory, and therefore can not
273 * set the change info
274 */
275
276 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
277
278 /* set replay cache */
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400279 fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
J. Bruce Fieldsa4773c082009-02-02 17:23:10 -0500280 &current_fh->fh_handle);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281
282 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
283 (open->op_iattr.ia_size == 0);
284
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200285 status = do_open_permission(rqstp, current_fh, open,
286 NFSD_MAY_OWNER_OVERRIDE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287
288 return status;
289}
290
Andy Adamson60adfc52009-04-03 08:28:50 +0300291static void
292copy_clientid(clientid_t *clid, struct nfsd4_session *session)
293{
294 struct nfsd4_sessionid *sid =
295 (struct nfsd4_sessionid *)session->se_sessionid.data;
296
297 clid->cl_boot = sid->clientid.cl_boot;
298 clid->cl_id = sid->clientid.cl_id;
299}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300
J.Bruce Fields71911552006-12-13 00:35:29 -0800301static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800302nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -0800303 struct nfsd4_open *open)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304{
Al Virob37ad282006-10-19 23:28:59 -0700305 __be32 status;
Andy Adamson66689582009-04-03 08:28:45 +0300306 struct nfsd4_compoundres *resp;
307
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400308 dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 (int)open->op_fname.len, open->op_fname.data,
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400310 open->op_openowner);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312 /* This check required by spec. */
313 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
314 return nfserr_inval;
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) &&
Jeff Laytona52d7262012-03-21 09:52:02 -0400322 !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE,
323 &cstate->session->se_client->cl_flags) &&
Mi Jinlongab1350b2011-07-14 15:06:26 +0800324 open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
325 return nfserr_grace;
326
Andy Adamson60adfc52009-04-03 08:28:50 +0300327 if (nfsd4_has_session(cstate))
328 copy_clientid(&open->op_clientid, cstate->session);
329
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 nfs4_lock_state();
331
332 /* check seqid for replay. set nfs4_owner */
Andy Adamson66689582009-04-03 08:28:45 +0300333 resp = rqstp->rq_resp;
334 status = nfsd4_process_open1(&resp->cstate, open);
Al Viroa90b0612006-10-19 23:29:03 -0700335 if (status == nfserr_replay_me) {
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400336 struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800337 fh_put(&cstate->current_fh);
J. Bruce Fieldsa4773c082009-02-02 17:23:10 -0500338 fh_copy_shallow(&cstate->current_fh.fh_handle,
339 &rp->rp_openfh);
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200340 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341 if (status)
342 dprintk("nfsd4_open: replay failed"
343 " restoring previous filehandle\n");
344 else
Al Viroa90b0612006-10-19 23:29:03 -0700345 status = nfserr_replay_me;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346 }
347 if (status)
348 goto out;
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800349
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800350 status = nfsd4_check_open_attributes(rqstp, cstate, open);
351 if (status)
352 goto out;
353
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800354 /* Openowner is now set, so sequence id will get bumped. Now we need
355 * these checks before we do any creates: */
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800356 status = nfserr_grace;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400357 if (locks_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800358 goto out;
359 status = nfserr_no_grace;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400360 if (!locks_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800361 goto out;
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800362
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 switch (open->op_claim_type) {
NeilBrown0dd3c192005-06-23 22:02:56 -0700364 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 case NFS4_OPEN_CLAIM_NULL:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800366 status = do_open_lookup(rqstp, &cstate->current_fh,
367 open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368 if (status)
369 goto out;
370 break;
371 case NFS4_OPEN_CLAIM_PREVIOUS:
J. Bruce Fieldsdad1c062011-09-12 12:24:13 -0400372 open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
Mi Jinlong0cf99b92011-11-23 10:48:40 +0800373 status = nfs4_check_open_reclaim(&open->op_clientid);
374 if (status)
375 goto out;
J. Bruce Fields8b289b22011-10-19 11:52:12 -0400376 case NFS4_OPEN_CLAIM_FH:
377 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800378 status = do_open_fhandle(rqstp, &cstate->current_fh,
379 open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 if (status)
381 goto out;
382 break;
J. Bruce Fields8b289b22011-10-19 11:52:12 -0400383 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
J. Bruce Fieldsdad1c062011-09-12 12:24:13 -0400385 open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400386 dprintk("NFSD: unsupported OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387 open->op_claim_type);
388 status = nfserr_notsupp;
389 goto out;
390 default:
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400391 dprintk("NFSD: Invalid OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392 open->op_claim_type);
393 status = nfserr_inval;
394 goto out;
395 }
396 /*
397 * nfsd4_process_open2() does the actual opening of the file. If
398 * successful, it (1) truncates the file if open->op_truncate was
399 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
400 */
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800401 status = nfsd4_process_open2(rqstp, &cstate->current_fh, open);
J. Bruce Fields856121b2011-10-13 11:37:11 -0400402 WARN_ON(status && open->op_created);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403out:
J. Bruce Fieldsd29b20c2011-10-13 15:12:59 -0400404 nfsd4_cleanup_open_state(open, status);
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400405 if (open->op_openowner)
406 cstate->replay_owner = &open->op_openowner->oo_owner;
J. Bruce Fields7c13f342011-08-30 22:15:47 -0400407 else
J. Bruce Fields5ec094c2011-08-30 17:02:48 -0400408 nfs4_unlock_state();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409 return status;
410}
411
412/*
413 * filehandle-manipulating ops.
414 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800415static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800416nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
417 struct svc_fh **getfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800419 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 return nfserr_nofilehandle;
421
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800422 *getfh = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 return nfs_ok;
424}
425
J.Bruce Fields71911552006-12-13 00:35:29 -0800426static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800427nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
428 struct nfsd4_putfh *putfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800430 fh_put(&cstate->current_fh);
431 cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
432 memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
433 putfh->pf_fhlen);
J. Bruce Fields68d93182011-04-08 17:00:50 -0400434 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435}
436
J.Bruce Fields71911552006-12-13 00:35:29 -0800437static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800438nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
439 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440{
Al Virob37ad282006-10-19 23:28:59 -0700441 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800443 fh_put(&cstate->current_fh);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700444 status = exp_pseudoroot(rqstp, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445 return status;
446}
447
J.Bruce Fields71911552006-12-13 00:35:29 -0800448static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800449nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
450 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800452 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453 return nfserr_restorefh;
454
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800455 fh_dup2(&cstate->current_fh, &cstate->save_fh);
Tigran Mkrtchyan37c593c2012-02-13 22:55:32 +0100456 if (HAS_STATE_ID(cstate, SAVED_STATE_ID_FLAG)) {
457 memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t));
458 SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG);
459 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 return nfs_ok;
461}
462
J.Bruce Fields71911552006-12-13 00:35:29 -0800463static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800464nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
465 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800467 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468 return nfserr_nofilehandle;
469
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800470 fh_dup2(&cstate->save_fh, &cstate->current_fh);
Tigran Mkrtchyan37c593c2012-02-13 22:55:32 +0100471 if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG)) {
472 memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t));
473 SET_STATE_ID(cstate, SAVED_STATE_ID_FLAG);
474 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475 return nfs_ok;
476}
477
478/*
479 * misc nfsv4 ops
480 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800481static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800482nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
483 struct nfsd4_access *access)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484{
485 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
486 return nfserr_inval;
487
488 access->ac_resp_access = access->ac_req_access;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800489 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
490 &access->ac_supported);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491}
492
Chuck Leverab4684d2012-03-02 17:13:50 -0500493static void gen_boot_verifier(nfs4_verifier *verifier)
494{
495 __be32 verf[2];
496
497 verf[0] = (__be32)nfssvc_boot.tv_sec;
498 verf[1] = (__be32)nfssvc_boot.tv_usec;
499 memcpy(verifier->data, verf, sizeof(verifier->data));
500}
501
J.Bruce Fields71911552006-12-13 00:35:29 -0800502static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800503nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
504 struct nfsd4_commit *commit)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505{
Chuck Leverab4684d2012-03-02 17:13:50 -0500506 gen_boot_verifier(&commit->co_verf);
J. Bruce Fields75c096f2011-08-15 18:39:32 -0400507 return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800508 commit->co_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509}
510
Al Virob37ad282006-10-19 23:28:59 -0700511static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800512nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
513 struct nfsd4_create *create)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514{
515 struct svc_fh resfh;
Al Virob37ad282006-10-19 23:28:59 -0700516 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517 dev_t rdev;
518
519 fh_init(&resfh, NFS4_FHSIZE);
520
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200521 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
522 NFSD_MAY_CREATE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523 if (status)
524 return status;
525
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800526 status = check_attr_support(rqstp, cstate, create->cr_bmval,
527 nfsd_attrmask);
528 if (status)
529 return status;
530
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531 switch (create->cr_type) {
532 case NF4LNK:
533 /* ugh! we have to null-terminate the linktext, or
534 * vfs_symlink() will choke. it is always safe to
535 * null-terminate by brute force, since at worst we
536 * will overwrite the first byte of the create namelen
537 * in the XDR buffer, which has already been extracted
538 * during XDR decode.
539 */
540 create->cr_linkname[create->cr_linklen] = 0;
541
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800542 status = nfsd_symlink(rqstp, &cstate->current_fh,
543 create->cr_name, create->cr_namelen,
544 create->cr_linkname, create->cr_linklen,
545 &resfh, &create->cr_iattr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546 break;
547
548 case NF4BLK:
549 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
550 if (MAJOR(rdev) != create->cr_specdata1 ||
551 MINOR(rdev) != create->cr_specdata2)
552 return nfserr_inval;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800553 status = nfsd_create(rqstp, &cstate->current_fh,
554 create->cr_name, create->cr_namelen,
555 &create->cr_iattr, S_IFBLK, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556 break;
557
558 case NF4CHR:
559 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
560 if (MAJOR(rdev) != create->cr_specdata1 ||
561 MINOR(rdev) != create->cr_specdata2)
562 return nfserr_inval;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800563 status = nfsd_create(rqstp, &cstate->current_fh,
564 create->cr_name, create->cr_namelen,
565 &create->cr_iattr,S_IFCHR, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566 break;
567
568 case NF4SOCK:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800569 status = nfsd_create(rqstp, &cstate->current_fh,
570 create->cr_name, create->cr_namelen,
571 &create->cr_iattr, S_IFSOCK, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572 break;
573
574 case NF4FIFO:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800575 status = nfsd_create(rqstp, &cstate->current_fh,
576 create->cr_name, create->cr_namelen,
577 &create->cr_iattr, S_IFIFO, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578 break;
579
580 case NF4DIR:
581 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800582 status = nfsd_create(rqstp, &cstate->current_fh,
583 create->cr_name, create->cr_namelen,
584 &create->cr_iattr, S_IFDIR, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585 break;
586
587 default:
588 status = nfserr_badtype;
589 }
590
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800591 if (status)
592 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800594 if (create->cr_acl != NULL)
595 do_set_nfs4_acl(rqstp, &resfh, create->cr_acl,
596 create->cr_bmval);
597
598 fh_unlock(&cstate->current_fh);
599 set_change_info(&create->cr_cinfo, &cstate->current_fh);
600 fh_dup2(&cstate->current_fh, &resfh);
601out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602 fh_put(&resfh);
603 return status;
604}
605
J.Bruce Fields71911552006-12-13 00:35:29 -0800606static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800607nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
608 struct nfsd4_getattr *getattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609{
Al Virob37ad282006-10-19 23:28:59 -0700610 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200612 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613 if (status)
614 return status;
615
616 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
617 return nfserr_inval;
618
Andy Adamson7e705702009-04-03 08:29:11 +0300619 getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
620 getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
621 getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800623 getattr->ga_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624 return nfs_ok;
625}
626
J.Bruce Fields71911552006-12-13 00:35:29 -0800627static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800628nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
629 struct nfsd4_link *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630{
Al Virob37ad282006-10-19 23:28:59 -0700631 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800633 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634 return status;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800635 status = nfsd_link(rqstp, &cstate->current_fh,
636 link->li_name, link->li_namelen, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700637 if (!status)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800638 set_change_info(&link->li_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700639 return status;
640}
641
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500642static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643{
644 struct svc_fh tmp_fh;
Al Virob37ad282006-10-19 23:28:59 -0700645 __be32 ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646
647 fh_init(&tmp_fh, NFS4_FHSIZE);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700648 ret = exp_pseudoroot(rqstp, &tmp_fh);
649 if (ret)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700650 return ret;
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500651 if (tmp_fh.fh_dentry == fh->fh_dentry) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652 fh_put(&tmp_fh);
653 return nfserr_noent;
654 }
655 fh_put(&tmp_fh);
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500656 return nfsd_lookup(rqstp, fh, "..", 2, fh);
657}
658
659static __be32
660nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
661 void *arg)
662{
663 return nfsd4_do_lookupp(rqstp, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664}
665
J.Bruce Fields71911552006-12-13 00:35:29 -0800666static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800667nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
668 struct nfsd4_lookup *lookup)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800670 return nfsd_lookup(rqstp, &cstate->current_fh,
671 lookup->lo_name, lookup->lo_len,
672 &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700673}
674
J.Bruce Fields71911552006-12-13 00:35:29 -0800675static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800676nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
677 struct nfsd4_read *read)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700678{
Al Virob37ad282006-10-19 23:28:59 -0700679 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680
681 /* no need to check permission - this will be done in nfsd_read() */
682
NeilBrown7e06b7f2005-06-23 22:03:13 -0700683 read->rd_filp = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684 if (read->rd_offset >= OFFSET_MAX)
685 return nfserr_inval;
686
687 nfs4_lock_state();
688 /* check stateid */
Benny Halevydd453df2009-04-03 08:28:41 +0300689 if ((status = nfs4_preprocess_stateid_op(cstate, &read->rd_stateid,
690 RD_STATE, &read->rd_filp))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
692 goto out;
693 }
NeilBrown7e06b7f2005-06-23 22:03:13 -0700694 if (read->rd_filp)
695 get_file(read->rd_filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696 status = nfs_ok;
697out:
698 nfs4_unlock_state();
699 read->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800700 read->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700701 return status;
702}
703
J.Bruce Fields71911552006-12-13 00:35:29 -0800704static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800705nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
706 struct nfsd4_readdir *readdir)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707{
708 u64 cookie = readdir->rd_cookie;
709 static const nfs4_verifier zeroverf;
710
711 /* no need to check permission - this will be done in nfsd_readdir() */
712
713 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
714 return nfserr_inval;
715
Andy Adamson7e705702009-04-03 08:29:11 +0300716 readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
717 readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
718 readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700719
Bernd Schubert832023b2011-08-08 17:38:08 +0200720 if ((cookie == 1) || (cookie == 2) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -0700721 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
722 return nfserr_bad_cookie;
723
724 readdir->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800725 readdir->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726 return nfs_ok;
727}
728
J.Bruce Fields71911552006-12-13 00:35:29 -0800729static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800730nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
731 struct nfsd4_readlink *readlink)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732{
733 readlink->rl_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800734 readlink->rl_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735 return nfs_ok;
736}
737
J.Bruce Fields71911552006-12-13 00:35:29 -0800738static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800739nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
740 struct nfsd4_remove *remove)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741{
Al Virob37ad282006-10-19 23:28:59 -0700742 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700743
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400744 if (locks_in_grace())
NeilBrownc815afc2005-06-23 22:03:00 -0700745 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800746 status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
747 remove->rm_name, remove->rm_namelen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700748 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800749 fh_unlock(&cstate->current_fh);
750 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700751 }
752 return status;
753}
754
J.Bruce Fields71911552006-12-13 00:35:29 -0800755static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800756nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
757 struct nfsd4_rename *rename)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700758{
Al Virob37ad282006-10-19 23:28:59 -0700759 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800761 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762 return status;
J. Bruce Fieldsaf558e32007-09-06 12:34:25 -0400763 if (locks_in_grace() && !(cstate->save_fh.fh_export->ex_flags
NeilBrownc815afc2005-06-23 22:03:00 -0700764 & NFSEXP_NOSUBTREECHECK))
765 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800766 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
767 rename->rn_snamelen, &cstate->current_fh,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768 rename->rn_tname, rename->rn_tnamelen);
769
770 /* the underlying filesystem returns different error's than required
771 * by NFSv4. both save_fh and current_fh have been verified.. */
772 if (status == nfserr_isdir)
773 status = nfserr_exist;
774 else if ((status == nfserr_notdir) &&
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800775 (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) &&
776 S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700777 status = nfserr_exist;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778
779 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800780 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
781 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782 }
783 return status;
784}
785
J.Bruce Fields71911552006-12-13 00:35:29 -0800786static __be32
Andy Adamsondcb488a32007-07-17 04:04:51 -0700787nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
788 struct nfsd4_secinfo *secinfo)
789{
790 struct svc_fh resfh;
791 struct svc_export *exp;
792 struct dentry *dentry;
793 __be32 err;
794
795 fh_init(&resfh, NFS4_FHSIZE);
J. Bruce Fields29a78a32011-04-09 11:28:53 -0400796 err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC);
797 if (err)
798 return err;
Andy Adamsondcb488a32007-07-17 04:04:51 -0700799 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
800 secinfo->si_name, secinfo->si_namelen,
801 &exp, &dentry);
802 if (err)
803 return err;
804 if (dentry->d_inode == NULL) {
805 exp_put(exp);
806 err = nfserr_noent;
807 } else
808 secinfo->si_exp = exp;
809 dput(dentry);
J. Bruce Fields56560b92010-12-16 09:57:15 -0500810 if (cstate->minorversion)
811 /* See rfc 5661 section 2.6.3.1.1.8 */
812 fh_put(&cstate->current_fh);
Andy Adamsondcb488a32007-07-17 04:04:51 -0700813 return err;
814}
815
816static __be32
J. Bruce Fields04f4ad12010-12-16 09:51:13 -0500817nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
818 struct nfsd4_secinfo_no_name *sin)
819{
820 __be32 err;
821
822 switch (sin->sin_style) {
823 case NFS4_SECINFO_STYLE4_CURRENT_FH:
824 break;
825 case NFS4_SECINFO_STYLE4_PARENT:
826 err = nfsd4_do_lookupp(rqstp, &cstate->current_fh);
827 if (err)
828 return err;
829 break;
830 default:
831 return nfserr_inval;
832 }
833 exp_get(cstate->current_fh.fh_export);
834 sin->sin_exp = cstate->current_fh.fh_export;
835 fh_put(&cstate->current_fh);
836 return nfs_ok;
837}
838
839static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800840nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
841 struct nfsd4_setattr *setattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700842{
Al Virob37ad282006-10-19 23:28:59 -0700843 __be32 status = nfs_ok;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700844
Linus Torvalds1da177e2005-04-16 15:20:36 -0700845 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
846 nfs4_lock_state();
Benny Halevydd453df2009-04-03 08:28:41 +0300847 status = nfs4_preprocess_stateid_op(cstate,
J. Bruce Fields6150ef02009-02-21 13:36:16 -0800848 &setattr->sa_stateid, WR_STATE, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700849 nfs4_unlock_state();
J. Bruce Fields375c5542006-01-18 17:43:33 -0800850 if (status) {
Greg Banks3e3b4802006-10-02 02:17:41 -0700851 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
J. Bruce Fields375c5542006-01-18 17:43:33 -0800852 return status;
853 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700854 }
Al Virobad0dcf2011-11-23 12:03:18 -0500855 status = fh_want_write(&cstate->current_fh);
Dave Hansen18f335a2008-02-15 14:37:38 -0800856 if (status)
857 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700858 status = nfs_ok;
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800859
860 status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
861 nfsd_attrmask);
862 if (status)
863 goto out;
864
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865 if (setattr->sa_acl != NULL)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800866 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
867 setattr->sa_acl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700868 if (status)
Dave Hansen18f335a2008-02-15 14:37:38 -0800869 goto out;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800870 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700871 0, (time_t)0);
Dave Hansen18f335a2008-02-15 14:37:38 -0800872out:
Al Virobad0dcf2011-11-23 12:03:18 -0500873 fh_drop_write(&cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700874 return status;
875}
876
J.Bruce Fields71911552006-12-13 00:35:29 -0800877static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800878nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
879 struct nfsd4_write *write)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880{
881 stateid_t *stateid = &write->wr_stateid;
882 struct file *filp = NULL;
Al Virob37ad282006-10-19 23:28:59 -0700883 __be32 status = nfs_ok;
David Shaw31dec252009-03-05 20:16:14 -0500884 unsigned long cnt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700885
886 /* no need to check permission - this will be done in nfsd_write() */
887
888 if (write->wr_offset >= OFFSET_MAX)
889 return nfserr_inval;
890
891 nfs4_lock_state();
Benny Halevydd453df2009-04-03 08:28:41 +0300892 status = nfs4_preprocess_stateid_op(cstate, stateid, WR_STATE, &filp);
NeilBrown7e06b7f2005-06-23 22:03:13 -0700893 if (filp)
894 get_file(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895 nfs4_unlock_state();
896
J. Bruce Fields375c5542006-01-18 17:43:33 -0800897 if (status) {
898 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
899 return status;
900 }
901
David Shaw31dec252009-03-05 20:16:14 -0500902 cnt = write->wr_buflen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903 write->wr_how_written = write->wr_stable_how;
Chuck Leverab4684d2012-03-02 17:13:50 -0500904 gen_boot_verifier(&write->wr_verifier);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700905
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800906 status = nfsd_write(rqstp, &cstate->current_fh, filp,
907 write->wr_offset, rqstp->rq_vec, write->wr_vlen,
David Shaw31dec252009-03-05 20:16:14 -0500908 &cnt, &write->wr_how_written);
NeilBrown7e06b7f2005-06-23 22:03:13 -0700909 if (filp)
910 fput(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700911
David Shaw31dec252009-03-05 20:16:14 -0500912 write->wr_bytes_written = cnt;
913
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700915}
916
917/* This routine never returns NFS_OK! If there are no other errors, it
918 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
919 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
920 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
921 */
Al Virob37ad282006-10-19 23:28:59 -0700922static __be32
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -0800923_nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800924 struct nfsd4_verify *verify)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925{
Al Viro2ebbc012006-10-19 23:28:58 -0700926 __be32 *buf, *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927 int count;
Al Virob37ad282006-10-19 23:28:59 -0700928 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700929
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200930 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700931 if (status)
932 return status;
933
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800934 status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
935 if (status)
936 return status;
937
Linus Torvalds1da177e2005-04-16 15:20:36 -0700938 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
939 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
940 return nfserr_inval;
941 if (verify->ve_attrlen & 3)
942 return nfserr_inval;
943
944 /* count in words:
945 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
946 */
947 count = 4 + (verify->ve_attrlen >> 2);
948 buf = kmalloc(count << 2, GFP_KERNEL);
949 if (!buf)
J. Bruce Fields3e772462011-08-10 19:07:33 -0400950 return nfserr_jukebox;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700951
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800952 status = nfsd4_encode_fattr(&cstate->current_fh,
953 cstate->current_fh.fh_export,
954 cstate->current_fh.fh_dentry, buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700955 &count, verify->ve_bmval,
Frank Filz406a7ea2007-11-27 11:34:05 -0800956 rqstp, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957
958 /* this means that nfsd4_encode_fattr() ran out of space */
959 if (status == nfserr_resource && count == 0)
960 status = nfserr_not_same;
961 if (status)
962 goto out_kfree;
963
Benny Halevy95ec28c2009-04-03 08:29:08 +0300964 /* skip bitmap */
965 p = buf + 1 + ntohl(buf[0]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700966 status = nfserr_not_same;
967 if (ntohl(*p++) != verify->ve_attrlen)
968 goto out_kfree;
969 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
970 status = nfserr_same;
971
972out_kfree:
973 kfree(buf);
974 return status;
975}
976
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -0800977static __be32
978nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
979 struct nfsd4_verify *verify)
980{
981 __be32 status;
982
983 status = _nfsd4_verify(rqstp, cstate, verify);
984 return status == nfserr_not_same ? nfs_ok : status;
985}
986
987static __be32
988nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
989 struct nfsd4_verify *verify)
990{
991 __be32 status;
992
993 status = _nfsd4_verify(rqstp, cstate, verify);
994 return status == nfserr_same ? nfs_ok : status;
995}
996
Linus Torvalds1da177e2005-04-16 15:20:36 -0700997/*
998 * NULL call.
999 */
Al Viro7111c662006-10-19 23:28:45 -07001000static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -07001001nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
1002{
1003 return nfs_ok;
1004}
1005
Shankar Anande2b20952006-07-10 04:45:44 -07001006static inline void nfsd4_increment_op_stats(u32 opnum)
1007{
1008 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
1009 nfsdstats.nfs4_opcount[opnum]++;
1010}
1011
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001012typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
1013 void *);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001014typedef u32(*nfsd4op_rsize)(struct svc_rqst *, struct nfsd4_op *op);
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001015typedef void(*stateid_setter)(struct nfsd4_compound_state *, void *);
1016typedef void(*stateid_getter)(struct nfsd4_compound_state *, void *);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001017
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001018enum nfsd4_op_flags {
1019 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
Mi Jinlong5ece3ca2011-02-18 09:08:31 +08001020 ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */
1021 ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */
J. Bruce Fields68d93182011-04-08 17:00:50 -04001022 /* For rfc 5661 section 2.6.3.1.1: */
1023 OP_HANDLES_WRONGSEC = 1 << 3,
1024 OP_IS_PUTFH_LIKE = 1 << 4,
J. Bruce Fields10910062011-01-24 12:11:02 -05001025 /*
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001026 * These are the ops whose result size we estimate before
1027 * encoding, to avoid performing an op then not being able to
1028 * respond or cache a response. This includes writes and setattrs
1029 * as well as the operations usually called "nonidempotent":
1030 */
1031 OP_MODIFIES_SOMETHING = 1 << 5,
1032 /*
1033 * Cache compounds containing these ops in the xid-based drc:
J. Bruce Fields10910062011-01-24 12:11:02 -05001034 * We use the DRC for compounds containing non-idempotent
1035 * operations, *except* those that are 4.1-specific (since
1036 * sessions provide their own EOS), and except for stateful
1037 * operations other than setclientid and setclientid_confirm
1038 * (since sequence numbers provide EOS for open, lock, etc in
1039 * the v4.0 case).
1040 */
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001041 OP_CACHEME = 1 << 6,
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001042 /*
1043 * These are ops which clear current state id.
1044 */
1045 OP_CLEAR_STATEID = 1 << 7,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001046};
1047
1048struct nfsd4_operation {
1049 nfsd4op_func op_func;
1050 u32 op_flags;
1051 char *op_name;
Mi Jinlong58e7b332011-08-28 18:18:56 +08001052 /* Try to get response size before operation */
1053 nfsd4op_rsize op_rsize_bop;
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001054 stateid_setter op_get_currentstateid;
1055 stateid_getter op_set_currentstateid;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001056};
1057
1058static struct nfsd4_operation nfsd4_ops[];
1059
Trond Myklebust8f199b82012-03-20 15:11:17 -04001060#ifdef NFSD_DEBUG
Adrian Bunkf1c7f792008-08-08 19:26:42 +03001061static const char *nfsd4_op_name(unsigned opnum);
Trond Myklebust8f199b82012-03-20 15:11:17 -04001062#endif
Benny Halevyb001a1b2008-07-02 11:15:03 +03001063
Linus Torvalds1da177e2005-04-16 15:20:36 -07001064/*
J. Bruce Fields57716352010-04-21 12:27:19 -04001065 * Enforce NFSv4.1 COMPOUND ordering rules:
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001066 *
J. Bruce Fields57716352010-04-21 12:27:19 -04001067 * Also note, enforced elsewhere:
1068 * - SEQUENCE other than as first op results in
1069 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001070 * - BIND_CONN_TO_SESSION must be the only op in its compound.
1071 * (Enforced in nfsd4_bind_conn_to_session().)
J. Bruce Fields57716352010-04-21 12:27:19 -04001072 * - DESTROY_SESSION must be the final operation in a compound, if
1073 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
1074 * (Enforced in nfsd4_destroy_session().)
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001075 */
J. Bruce Fields57716352010-04-21 12:27:19 -04001076static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args)
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001077{
J. Bruce Fields57716352010-04-21 12:27:19 -04001078 struct nfsd4_op *op = &args->ops[0];
1079
1080 /* These ordering requirements don't apply to NFSv4.0: */
1081 if (args->minorversion == 0)
1082 return nfs_ok;
1083 /* This is weird, but OK, not our problem: */
1084 if (args->opcnt == 0)
1085 return nfs_ok;
1086 if (op->status == nfserr_op_illegal)
1087 return nfs_ok;
1088 if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP))
1089 return nfserr_op_not_in_session;
1090 if (op->opnum == OP_SEQUENCE)
1091 return nfs_ok;
1092 if (args->opcnt != 1)
1093 return nfserr_not_only_op;
1094 return nfs_ok;
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001095}
1096
J. Bruce Fields22b03212011-04-09 11:23:24 -04001097static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op)
1098{
1099 return &nfsd4_ops[op->opnum];
1100}
1101
J. Bruce Fields10910062011-01-24 12:11:02 -05001102bool nfsd4_cache_this_op(struct nfsd4_op *op)
1103{
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001104 return OPDESC(op)->op_flags & OP_CACHEME;
J. Bruce Fields10910062011-01-24 12:11:02 -05001105}
1106
J. Bruce Fields68d93182011-04-08 17:00:50 -04001107static bool need_wrongsec_check(struct svc_rqst *rqstp)
1108{
1109 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1110 struct nfsd4_compoundargs *argp = rqstp->rq_argp;
1111 struct nfsd4_op *this = &argp->ops[resp->opcnt - 1];
1112 struct nfsd4_op *next = &argp->ops[resp->opcnt];
1113 struct nfsd4_operation *thisd;
1114 struct nfsd4_operation *nextd;
1115
1116 thisd = OPDESC(this);
1117 /*
1118 * Most ops check wronsec on our own; only the putfh-like ops
1119 * have special rules.
1120 */
1121 if (!(thisd->op_flags & OP_IS_PUTFH_LIKE))
1122 return false;
1123 /*
1124 * rfc 5661 2.6.3.1.1.6: don't bother erroring out a
1125 * put-filehandle operation if we're not going to use the
1126 * result:
1127 */
1128 if (argp->opcnt == resp->opcnt)
1129 return false;
1130
1131 nextd = OPDESC(next);
1132 /*
1133 * Rest of 2.6.3.1.1: certain operations will return WRONGSEC
1134 * errors themselves as necessary; others should check for them
1135 * now:
1136 */
1137 return !(nextd->op_flags & OP_HANDLES_WRONGSEC);
1138}
1139
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001140/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001141 * COMPOUND call.
1142 */
Al Viro7111c662006-10-19 23:28:45 -07001143static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -07001144nfsd4_proc_compound(struct svc_rqst *rqstp,
1145 struct nfsd4_compoundargs *args,
1146 struct nfsd4_compoundres *resp)
1147{
1148 struct nfsd4_op *op;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001149 struct nfsd4_operation *opdesc;
Andy Adamsone354d572009-03-28 11:30:52 +03001150 struct nfsd4_compound_state *cstate = &resp->cstate;
J.Bruce Fieldse5710192006-12-13 00:35:20 -08001151 int slack_bytes;
Mi Jinlong58e7b332011-08-28 18:18:56 +08001152 u32 plen = 0;
Al Virob37ad282006-10-19 23:28:59 -07001153 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001154
Linus Torvalds1da177e2005-04-16 15:20:36 -07001155 resp->xbuf = &rqstp->rq_res;
Andy Adamsone354d572009-03-28 11:30:52 +03001156 resp->p = rqstp->rq_res.head[0].iov_base +
1157 rqstp->rq_res.head[0].iov_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001158 resp->tagp = resp->p;
1159 /* reserve space for: taglen, tag, and opcnt */
1160 resp->p += 2 + XDR_QUADLEN(args->taglen);
1161 resp->end = rqstp->rq_res.head[0].iov_base + PAGE_SIZE;
1162 resp->taglen = args->taglen;
1163 resp->tag = args->tag;
1164 resp->opcnt = 0;
1165 resp->rqstp = rqstp;
Andy Adamsond87a8ad2009-04-03 08:28:53 +03001166 resp->cstate.minorversion = args->minorversion;
Andy Adamsone354d572009-03-28 11:30:52 +03001167 resp->cstate.replay_owner = NULL;
J. Bruce Fields26c0c752010-04-24 15:35:43 -04001168 resp->cstate.session = NULL;
Andy Adamsone354d572009-03-28 11:30:52 +03001169 fh_init(&resp->cstate.current_fh, NFS4_FHSIZE);
1170 fh_init(&resp->cstate.save_fh, NFS4_FHSIZE);
NeilBrown8ff30fa2010-08-12 17:04:07 +10001171 /*
1172 * Don't use the deferral mechanism for NFSv4; compounds make it
1173 * too hard to avoid non-idempotency problems.
1174 */
1175 rqstp->rq_usedeferral = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001176
1177 /*
1178 * According to RFC3010, this takes precedence over all other errors.
1179 */
1180 status = nfserr_minor_vers_mismatch;
Benny Halevy8daf2202009-04-03 08:28:59 +03001181 if (args->minorversion > nfsd_supported_minorversion)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001182 goto out;
1183
J. Bruce Fields57716352010-04-21 12:27:19 -04001184 status = nfs41_check_op_ordering(args);
1185 if (status) {
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001186 op = &args->ops[0];
J. Bruce Fields57716352010-04-21 12:27:19 -04001187 op->status = status;
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001188 goto encode_op;
1189 }
1190
Linus Torvalds1da177e2005-04-16 15:20:36 -07001191 while (!status && resp->opcnt < args->opcnt) {
1192 op = &args->ops[resp->opcnt++];
1193
Benny Halevyb001a1b2008-07-02 11:15:03 +03001194 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
1195 resp->opcnt, args->opcnt, op->opnum,
1196 nfsd4_op_name(op->opnum));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001197 /*
1198 * The XDR decode routines may have pre-set op->status;
1199 * for example, if there is a miscellaneous XDR error
1200 * it will be set to nfserr_bad_xdr.
1201 */
1202 if (op->status)
1203 goto encode_op;
1204
1205 /* We must be able to encode a successful response to
1206 * this operation, with enough room left over to encode a
1207 * failed response to the next operation. If we don't
1208 * have enough room, fail with ERR_RESOURCE.
1209 */
J.Bruce Fieldse5710192006-12-13 00:35:20 -08001210 slack_bytes = (char *)resp->end - (char *)resp->p;
1211 if (slack_bytes < COMPOUND_SLACK_SPACE
1212 + COMPOUND_ERR_SLACK_SPACE) {
1213 BUG_ON(slack_bytes < COMPOUND_ERR_SLACK_SPACE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001214 op->status = nfserr_resource;
1215 goto encode_op;
1216 }
1217
J. Bruce Fields22b03212011-04-09 11:23:24 -04001218 opdesc = OPDESC(op);
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001219
J.Bruce Fieldsca364312006-12-13 00:35:27 -08001220 if (!cstate->current_fh.fh_dentry) {
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001221 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -07001222 op->status = nfserr_nofilehandle;
1223 goto encode_op;
1224 }
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001225 } else if (cstate->current_fh.fh_export->ex_fslocs.migrated &&
1226 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -07001227 op->status = nfserr_moved;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001228 goto encode_op;
1229 }
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001230
Mi Jinlong58e7b332011-08-28 18:18:56 +08001231 /* If op is non-idempotent */
1232 if (opdesc->op_flags & OP_MODIFIES_SOMETHING) {
1233 plen = opdesc->op_rsize_bop(rqstp, op);
1234 op->status = nfsd4_check_resp_size(resp, plen);
1235 }
1236
1237 if (op->status)
1238 goto encode_op;
1239
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001240 if (opdesc->op_func) {
1241 if (opdesc->op_get_currentstateid)
1242 opdesc->op_get_currentstateid(cstate, &op->u);
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001243 op->status = opdesc->op_func(rqstp, cstate, &op->u);
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001244 } else
Linus Torvalds1da177e2005-04-16 15:20:36 -07001245 BUG_ON(op->status == nfs_ok);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001246
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001247 if (!op->status) {
1248 if (opdesc->op_set_currentstateid)
1249 opdesc->op_set_currentstateid(cstate, &op->u);
1250
1251 if (opdesc->op_flags & OP_CLEAR_STATEID)
Tigran Mkrtchyan37c593c2012-02-13 22:55:32 +01001252 clear_current_stateid(cstate);
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001253
1254 if (need_wrongsec_check(rqstp))
1255 op->status = check_nfsd_access(cstate->current_fh.fh_export, rqstp);
1256 }
J. Bruce Fields68d93182011-04-08 17:00:50 -04001257
Linus Torvalds1da177e2005-04-16 15:20:36 -07001258encode_op:
Andy Adamson49557cc2009-07-23 19:02:16 -04001259 /* Only from SEQUENCE */
Andy Adamsonda3846a2009-04-03 08:28:22 +03001260 if (resp->cstate.status == nfserr_replay_cache) {
1261 dprintk("%s NFS4.1 replay from cache\n", __func__);
Andy Adamsonabfabf82009-07-23 19:02:18 -04001262 status = op->status;
Andy Adamsonda3846a2009-04-03 08:28:22 +03001263 goto out;
1264 }
Al Viroa90b0612006-10-19 23:29:03 -07001265 if (op->status == nfserr_replay_me) {
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001266 op->replay = &cstate->replay_owner->so_replay;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001267 nfsd4_encode_replay(resp, op);
1268 status = op->status = op->replay->rp_status;
1269 } else {
1270 nfsd4_encode_operation(resp, op);
1271 status = op->status;
1272 }
Benny Halevy04077172008-12-15 19:40:49 +02001273
1274 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
1275 args->ops, args->opcnt, resp->opcnt, op->opnum,
1276 be32_to_cpu(status));
1277
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001278 if (cstate->replay_owner) {
J. Bruce Fields5ec094c2011-08-30 17:02:48 -04001279 nfs4_unlock_state();
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001280 cstate->replay_owner = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001281 }
NeilBrown7e06b7f2005-06-23 22:03:13 -07001282 /* XXX Ugh, we need to get rid of this kind of special case: */
1283 if (op->opnum == OP_READ && op->u.read.rd_filp)
1284 fput(op->u.read.rd_filp);
Shankar Anande2b20952006-07-10 04:45:44 -07001285
1286 nfsd4_increment_op_stats(op->opnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001287 }
1288
Andy Adamsonda3846a2009-04-03 08:28:22 +03001289 resp->cstate.status = status;
Andy Adamsone354d572009-03-28 11:30:52 +03001290 fh_put(&resp->cstate.current_fh);
1291 fh_put(&resp->cstate.save_fh);
1292 BUG_ON(resp->cstate.replay_owner);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001293out:
Andy Adamson2f425872009-04-03 08:27:32 +03001294 /* Reset deferral mechanism for RPC deferrals */
1295 rqstp->rq_usedeferral = 1;
J. Bruce Fields3b12cd92008-05-05 17:17:44 -04001296 dprintk("nfsv4 compound returned %d\n", ntohl(status));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001297 return status;
1298}
1299
Mi Jinlong58e7b332011-08-28 18:18:56 +08001300#define op_encode_hdr_size (2)
1301#define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
1302#define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
1303#define op_encode_change_info_maxsz (5)
1304#define nfs4_fattr_bitmap_maxsz (4)
1305
1306#define op_encode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1307#define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz)
1308
1309#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1310
1311#define op_encode_ace_maxsz (3 + nfs4_owner_maxsz)
1312#define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \
1313 op_encode_ace_maxsz)
1314
1315#define op_encode_channel_attrs_maxsz (6 + 1 + 1)
1316
1317static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1318{
1319 return (op_encode_hdr_size) * sizeof(__be32);
1320}
1321
1322static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1323{
1324 return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32);
1325}
1326
1327static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1328{
1329 return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
1330}
1331
1332static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1333{
1334 return (op_encode_hdr_size + op_encode_change_info_maxsz
1335 + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1336}
1337
1338static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1339{
1340 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1341 * sizeof(__be32);
1342}
1343
1344static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1345{
1346 return (op_encode_hdr_size + op_encode_lock_denied_maxsz)
1347 * sizeof(__be32);
1348}
1349
1350static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1351{
1352 return (op_encode_hdr_size + op_encode_stateid_maxsz
1353 + op_encode_change_info_maxsz + 1
1354 + nfs4_fattr_bitmap_maxsz
1355 + op_encode_delegation_maxsz) * sizeof(__be32);
1356}
1357
1358static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1359{
1360 u32 maxcount = 0, rlen = 0;
1361
1362 maxcount = svc_max_payload(rqstp);
1363 rlen = op->u.read.rd_length;
1364
1365 if (rlen > maxcount)
1366 rlen = maxcount;
1367
1368 return (op_encode_hdr_size + 2) * sizeof(__be32) + rlen;
1369}
1370
1371static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1372{
1373 u32 rlen = op->u.readdir.rd_maxcount;
1374
1375 if (rlen > PAGE_SIZE)
1376 rlen = PAGE_SIZE;
1377
1378 return (op_encode_hdr_size + op_encode_verifier_maxsz)
1379 * sizeof(__be32) + rlen;
1380}
1381
1382static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1383{
1384 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1385 * sizeof(__be32);
1386}
1387
1388static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1389{
1390 return (op_encode_hdr_size + op_encode_change_info_maxsz
1391 + op_encode_change_info_maxsz) * sizeof(__be32);
1392}
1393
1394static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1395{
1396 return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1397}
1398
1399static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1400{
1401 return (op_encode_hdr_size + 2 + 1024) * sizeof(__be32);
1402}
1403
1404static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1405{
1406 return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
1407}
1408
1409static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1410{
1411 return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\
1412 1 + 1 + 0 + /* eir_flags, spr_how, SP4_NONE (for now) */\
1413 2 + /*eir_server_owner.so_minor_id */\
1414 /* eir_server_owner.so_major_id<> */\
1415 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1416 /* eir_server_scope<> */\
1417 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1418 1 + /* eir_server_impl_id array length */\
1419 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32);
1420}
1421
1422static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1423{
1424 return (op_encode_hdr_size + \
1425 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\
1426 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32);
1427}
1428
1429static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1430{
1431 return (op_encode_hdr_size + \
1432 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\
1433 2 + /* csr_sequence, csr_flags */\
1434 op_encode_channel_attrs_maxsz + \
1435 op_encode_channel_attrs_maxsz) * sizeof(__be32);
1436}
1437
Benny Halevy20766012009-03-28 11:32:05 +03001438static struct nfsd4_operation nfsd4_ops[] = {
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001439 [OP_ACCESS] = {
1440 .op_func = (nfsd4op_func)nfsd4_access,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001441 .op_name = "OP_ACCESS",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001442 },
1443 [OP_CLOSE] = {
1444 .op_func = (nfsd4op_func)nfsd4_close,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001445 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001446 .op_name = "OP_CLOSE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001447 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001448 .op_get_currentstateid = (stateid_getter)nfsd4_get_closestateid,
1449 .op_set_currentstateid = (stateid_setter)nfsd4_set_closestateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001450 },
1451 [OP_COMMIT] = {
1452 .op_func = (nfsd4op_func)nfsd4_commit,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001453 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001454 .op_name = "OP_COMMIT",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001455 .op_rsize_bop = (nfsd4op_rsize)nfsd4_commit_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001456 },
1457 [OP_CREATE] = {
1458 .op_func = (nfsd4op_func)nfsd4_create,
Tigran Mkrtchyand1471052012-02-13 22:55:29 +01001459 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001460 .op_name = "OP_CREATE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001461 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001462 },
1463 [OP_DELEGRETURN] = {
1464 .op_func = (nfsd4op_func)nfsd4_delegreturn,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001465 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001466 .op_name = "OP_DELEGRETURN",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001467 .op_rsize_bop = nfsd4_only_status_rsize,
Tigran Mkrtchyan9428fe12012-02-13 22:55:31 +01001468 .op_get_currentstateid = (stateid_getter)nfsd4_get_delegreturnstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001469 },
1470 [OP_GETATTR] = {
1471 .op_func = (nfsd4op_func)nfsd4_getattr,
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001472 .op_flags = ALLOWED_ON_ABSENT_FS,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001473 .op_name = "OP_GETATTR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001474 },
1475 [OP_GETFH] = {
1476 .op_func = (nfsd4op_func)nfsd4_getfh,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001477 .op_name = "OP_GETFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001478 },
1479 [OP_LINK] = {
1480 .op_func = (nfsd4op_func)nfsd4_link,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001481 .op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING
1482 | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001483 .op_name = "OP_LINK",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001484 .op_rsize_bop = (nfsd4op_rsize)nfsd4_link_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001485 },
1486 [OP_LOCK] = {
1487 .op_func = (nfsd4op_func)nfsd4_lock,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001488 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001489 .op_name = "OP_LOCK",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001490 .op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize,
Tigran Mkrtchyan62cd4a52012-02-13 22:55:25 +01001491 .op_set_currentstateid = (stateid_setter)nfsd4_set_lockstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001492 },
1493 [OP_LOCKT] = {
1494 .op_func = (nfsd4op_func)nfsd4_lockt,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001495 .op_name = "OP_LOCKT",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001496 },
1497 [OP_LOCKU] = {
1498 .op_func = (nfsd4op_func)nfsd4_locku,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001499 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001500 .op_name = "OP_LOCKU",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001501 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
Tigran Mkrtchyan62cd4a52012-02-13 22:55:25 +01001502 .op_get_currentstateid = (stateid_getter)nfsd4_get_lockustateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001503 },
1504 [OP_LOOKUP] = {
1505 .op_func = (nfsd4op_func)nfsd4_lookup,
Tigran Mkrtchyand1471052012-02-13 22:55:29 +01001506 .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001507 .op_name = "OP_LOOKUP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001508 },
1509 [OP_LOOKUPP] = {
1510 .op_func = (nfsd4op_func)nfsd4_lookupp,
Tigran Mkrtchyand1471052012-02-13 22:55:29 +01001511 .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001512 .op_name = "OP_LOOKUPP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001513 },
1514 [OP_NVERIFY] = {
1515 .op_func = (nfsd4op_func)nfsd4_nverify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001516 .op_name = "OP_NVERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001517 },
1518 [OP_OPEN] = {
1519 .op_func = (nfsd4op_func)nfsd4_open,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001520 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001521 .op_name = "OP_OPEN",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001522 .op_rsize_bop = (nfsd4op_rsize)nfsd4_open_rsize,
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001523 .op_set_currentstateid = (stateid_setter)nfsd4_set_openstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001524 },
1525 [OP_OPEN_CONFIRM] = {
1526 .op_func = (nfsd4op_func)nfsd4_open_confirm,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001527 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001528 .op_name = "OP_OPEN_CONFIRM",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001529 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001530 },
1531 [OP_OPEN_DOWNGRADE] = {
1532 .op_func = (nfsd4op_func)nfsd4_open_downgrade,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001533 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001534 .op_name = "OP_OPEN_DOWNGRADE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001535 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
Tigran Mkrtchyan9428fe12012-02-13 22:55:31 +01001536 .op_get_currentstateid = (stateid_getter)nfsd4_get_opendowngradestateid,
1537 .op_set_currentstateid = (stateid_setter)nfsd4_set_opendowngradestateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001538 },
1539 [OP_PUTFH] = {
1540 .op_func = (nfsd4op_func)nfsd4_putfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001541 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
Tigran Mkrtchyan80e01cc2012-02-13 22:55:27 +01001542 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING
1543 | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001544 .op_name = "OP_PUTFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001545 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001546 },
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001547 [OP_PUTPUBFH] = {
J. Bruce Fieldsa1c8c4d2009-03-09 12:17:29 -04001548 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001549 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
Tigran Mkrtchyan80e01cc2012-02-13 22:55:27 +01001550 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING
1551 | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001552 .op_name = "OP_PUTPUBFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001553 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001554 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001555 [OP_PUTROOTFH] = {
1556 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001557 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
Tigran Mkrtchyan80e01cc2012-02-13 22:55:27 +01001558 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING
1559 | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001560 .op_name = "OP_PUTROOTFH",
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_READ] = {
1564 .op_func = (nfsd4op_func)nfsd4_read,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001565 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001566 .op_name = "OP_READ",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001567 .op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize,
Tigran Mkrtchyan30813e22012-02-13 22:55:26 +01001568 .op_get_currentstateid = (stateid_getter)nfsd4_get_readstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001569 },
1570 [OP_READDIR] = {
1571 .op_func = (nfsd4op_func)nfsd4_readdir,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001572 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001573 .op_name = "OP_READDIR",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001574 .op_rsize_bop = (nfsd4op_rsize)nfsd4_readdir_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001575 },
1576 [OP_READLINK] = {
1577 .op_func = (nfsd4op_func)nfsd4_readlink,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001578 .op_name = "OP_READLINK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001579 },
1580 [OP_REMOVE] = {
1581 .op_func = (nfsd4op_func)nfsd4_remove,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001582 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001583 .op_name = "OP_REMOVE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001584 .op_rsize_bop = (nfsd4op_rsize)nfsd4_remove_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001585 },
1586 [OP_RENAME] = {
1587 .op_func = (nfsd4op_func)nfsd4_rename,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001588 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001589 .op_name = "OP_RENAME",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001590 .op_rsize_bop = (nfsd4op_rsize)nfsd4_rename_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001591 },
1592 [OP_RENEW] = {
1593 .op_func = (nfsd4op_func)nfsd4_renew,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001594 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1595 | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001596 .op_name = "OP_RENEW",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001597 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
1598
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001599 },
1600 [OP_RESTOREFH] = {
1601 .op_func = (nfsd4op_func)nfsd4_restorefh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001602 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
Mi Jinlong58e7b332011-08-28 18:18:56 +08001603 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001604 .op_name = "OP_RESTOREFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001605 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001606 },
1607 [OP_SAVEFH] = {
1608 .op_func = (nfsd4op_func)nfsd4_savefh,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001609 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001610 .op_name = "OP_SAVEFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001611 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001612 },
Andy Adamsondcb488a32007-07-17 04:04:51 -07001613 [OP_SECINFO] = {
1614 .op_func = (nfsd4op_func)nfsd4_secinfo,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001615 .op_flags = OP_HANDLES_WRONGSEC,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001616 .op_name = "OP_SECINFO",
Andy Adamsondcb488a32007-07-17 04:04:51 -07001617 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001618 [OP_SETATTR] = {
1619 .op_func = (nfsd4op_func)nfsd4_setattr,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001620 .op_name = "OP_SETATTR",
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001621 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001622 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setattr_rsize,
Tigran Mkrtchyan1e97b512012-02-13 22:55:30 +01001623 .op_get_currentstateid = (stateid_getter)nfsd4_get_setattrstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001624 },
1625 [OP_SETCLIENTID] = {
1626 .op_func = (nfsd4op_func)nfsd4_setclientid,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001627 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001628 | OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001629 .op_name = "OP_SETCLIENTID",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001630 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setclientid_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001631 },
1632 [OP_SETCLIENTID_CONFIRM] = {
1633 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001634 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001635 | OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001636 .op_name = "OP_SETCLIENTID_CONFIRM",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001637 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001638 },
1639 [OP_VERIFY] = {
1640 .op_func = (nfsd4op_func)nfsd4_verify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001641 .op_name = "OP_VERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001642 },
1643 [OP_WRITE] = {
1644 .op_func = (nfsd4op_func)nfsd4_write,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001645 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001646 .op_name = "OP_WRITE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001647 .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
Tigran Mkrtchyan30813e22012-02-13 22:55:26 +01001648 .op_get_currentstateid = (stateid_getter)nfsd4_get_writestateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001649 },
1650 [OP_RELEASE_LOCKOWNER] = {
1651 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001652 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
1653 | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001654 .op_name = "OP_RELEASE_LOCKOWNER",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001655 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001656 },
Andy Adamson069b6ad2009-04-03 08:27:58 +03001657
1658 /* NFSv4.1 operations */
1659 [OP_EXCHANGE_ID] = {
1660 .op_func = (nfsd4op_func)nfsd4_exchange_id,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001661 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1662 | OP_MODIFIES_SOMETHING,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001663 .op_name = "OP_EXCHANGE_ID",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001664 .op_rsize_bop = (nfsd4op_rsize)nfsd4_exchange_id_rsize,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001665 },
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001666 [OP_BIND_CONN_TO_SESSION] = {
1667 .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001668 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1669 | OP_MODIFIES_SOMETHING,
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001670 .op_name = "OP_BIND_CONN_TO_SESSION",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001671 .op_rsize_bop = (nfsd4op_rsize)nfsd4_bind_conn_to_session_rsize,
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001672 },
Andy Adamson069b6ad2009-04-03 08:27:58 +03001673 [OP_CREATE_SESSION] = {
1674 .op_func = (nfsd4op_func)nfsd4_create_session,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001675 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1676 | OP_MODIFIES_SOMETHING,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001677 .op_name = "OP_CREATE_SESSION",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001678 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_session_rsize,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001679 },
1680 [OP_DESTROY_SESSION] = {
1681 .op_func = (nfsd4op_func)nfsd4_destroy_session,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001682 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1683 | OP_MODIFIES_SOMETHING,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001684 .op_name = "OP_DESTROY_SESSION",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001685 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001686 },
1687 [OP_SEQUENCE] = {
1688 .op_func = (nfsd4op_func)nfsd4_sequence,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001689 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03001690 .op_name = "OP_SEQUENCE",
1691 },
Benny Halevy094b5d72011-06-16 11:39:10 -04001692 [OP_DESTROY_CLIENTID] = {
Mi Jinlong345c2842011-10-20 17:51:39 +08001693 .op_func = (nfsd4op_func)nfsd4_destroy_clientid,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001694 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
1695 | OP_MODIFIES_SOMETHING,
Benny Halevy094b5d72011-06-16 11:39:10 -04001696 .op_name = "OP_DESTROY_CLIENTID",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001697 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
Benny Halevy094b5d72011-06-16 11:39:10 -04001698 },
J. Bruce Fields4dc6ec02010-04-19 15:11:28 -04001699 [OP_RECLAIM_COMPLETE] = {
1700 .op_func = (nfsd4op_func)nfsd4_reclaim_complete,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001701 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
J. Bruce Fields4dc6ec02010-04-19 15:11:28 -04001702 .op_name = "OP_RECLAIM_COMPLETE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001703 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J. Bruce Fields4dc6ec02010-04-19 15:11:28 -04001704 },
J. Bruce Fields04f4ad12010-12-16 09:51:13 -05001705 [OP_SECINFO_NO_NAME] = {
1706 .op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
J. Bruce Fields68d93182011-04-08 17:00:50 -04001707 .op_flags = OP_HANDLES_WRONGSEC,
J. Bruce Fields04f4ad12010-12-16 09:51:13 -05001708 .op_name = "OP_SECINFO_NO_NAME",
1709 },
Bryan Schumaker17456802011-07-13 10:50:48 -04001710 [OP_TEST_STATEID] = {
1711 .op_func = (nfsd4op_func)nfsd4_test_stateid,
1712 .op_flags = ALLOWED_WITHOUT_FH,
1713 .op_name = "OP_TEST_STATEID",
1714 },
Bryan Schumakere1ca12d2011-07-13 11:04:21 -04001715 [OP_FREE_STATEID] = {
1716 .op_func = (nfsd4op_func)nfsd4_free_stateid,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001717 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
Bryan Schumakere1ca12d2011-07-13 11:04:21 -04001718 .op_name = "OP_FREE_STATEID",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001719 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
Bryan Schumakere1ca12d2011-07-13 11:04:21 -04001720 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001721};
1722
Trond Myklebust8f199b82012-03-20 15:11:17 -04001723#ifdef NFSD_DEBUG
Adrian Bunkf1c7f792008-08-08 19:26:42 +03001724static const char *nfsd4_op_name(unsigned opnum)
Benny Halevyb001a1b2008-07-02 11:15:03 +03001725{
1726 if (opnum < ARRAY_SIZE(nfsd4_ops))
1727 return nfsd4_ops[opnum].op_name;
1728 return "unknown_operation";
1729}
Trond Myklebust8f199b82012-03-20 15:11:17 -04001730#endif
Benny Halevyb001a1b2008-07-02 11:15:03 +03001731
Linus Torvalds1da177e2005-04-16 15:20:36 -07001732#define nfsd4_voidres nfsd4_voidargs
Linus Torvalds1da177e2005-04-16 15:20:36 -07001733struct nfsd4_voidargs { int dummy; };
1734
Linus Torvalds1da177e2005-04-16 15:20:36 -07001735static struct svc_procedure nfsd_procedures4[2] = {
Yu Zhiguo0a93a472009-05-19 14:09:54 +08001736 [NFSPROC4_NULL] = {
1737 .pc_func = (svc_procfunc) nfsd4_proc_null,
1738 .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
1739 .pc_argsize = sizeof(struct nfsd4_voidargs),
1740 .pc_ressize = sizeof(struct nfsd4_voidres),
1741 .pc_cachetype = RC_NOCACHE,
1742 .pc_xdrressize = 1,
1743 },
1744 [NFSPROC4_COMPOUND] = {
1745 .pc_func = (svc_procfunc) nfsd4_proc_compound,
1746 .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
1747 .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
1748 .pc_argsize = sizeof(struct nfsd4_compoundargs),
1749 .pc_ressize = sizeof(struct nfsd4_compoundres),
J. Bruce Fields3e98abf2011-07-16 17:15:10 -04001750 .pc_release = nfsd4_release_compoundargs,
Yu Zhiguo0a93a472009-05-19 14:09:54 +08001751 .pc_cachetype = RC_NOCACHE,
1752 .pc_xdrressize = NFSD_BUFSIZE/4,
1753 },
Linus Torvalds1da177e2005-04-16 15:20:36 -07001754};
1755
1756struct svc_version nfsd_version4 = {
1757 .vs_vers = 4,
1758 .vs_nproc = 2,
1759 .vs_proc = nfsd_procedures4,
1760 .vs_dispatch = nfsd_dispatch,
1761 .vs_xdrsize = NFS4_SVC_XDRSIZE,
1762};
1763
1764/*
1765 * Local variables:
1766 * c-basic-offset: 8
1767 * End:
1768 */