blob: 2b91443497cc7168901a3505d1c5dabe926e3115 [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>
Anna Schumakerb0cb9082014-11-07 14:44:27 -050036#include <linux/falloc.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090037#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070038
Mi Jinlong58e7b332011-08-28 18:18:56 +080039#include "idmap.h"
Boaz Harrosh9a74af22009-12-03 20:30:56 +020040#include "cache.h"
41#include "xdr4.h"
J. Bruce Fields0a3adad2009-11-04 18:12:35 -050042#include "vfs.h"
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +010043#include "current_stateid.h"
Stanislav Kinsbursky3320fef192012-11-14 18:22:07 +030044#include "netns.h"
Christoph Hellwig4ac72492013-12-20 05:16:55 -080045#include "acl.h"
Christoph Hellwig9cf514c2014-05-05 13:11:59 +020046#include "pnfs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070047
David Quigley18032ca2013-05-02 13:19:10 -040048#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
49#include <linux/security.h>
50
51static inline void
52nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval)
53{
54 struct inode *inode = resfh->fh_dentry->d_inode;
55 int status;
56
57 mutex_lock(&inode->i_mutex);
58 status = security_inode_setsecctx(resfh->fh_dentry,
59 label->data, label->len);
60 mutex_unlock(&inode->i_mutex);
61
62 if (status)
63 /*
64 * XXX: We should really fail the whole open, but we may
65 * already have created a new file, so it may be too
66 * late. For now this seems the least of evils:
67 */
68 bmval[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
69
70 return;
71}
72#else
73static inline void
74nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval)
75{ }
76#endif
77
Linus Torvalds1da177e2005-04-16 15:20:36 -070078#define NFSDDBG_FACILITY NFSDDBG_PROC
79
Yu Zhiguo3c8e0312009-05-16 16:22:31 +080080static u32 nfsd_attrmask[] = {
81 NFSD_WRITEABLE_ATTRS_WORD0,
82 NFSD_WRITEABLE_ATTRS_WORD1,
83 NFSD_WRITEABLE_ATTRS_WORD2
84};
85
86static u32 nfsd41_ex_attrmask[] = {
87 NFSD_SUPPATTR_EXCLCREAT_WORD0,
88 NFSD_SUPPATTR_EXCLCREAT_WORD1,
89 NFSD_SUPPATTR_EXCLCREAT_WORD2
90};
91
92static __be32
93check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
94 u32 *bmval, u32 *writable)
95{
96 struct dentry *dentry = cstate->current_fh.fh_dentry;
Yu Zhiguo3c8e0312009-05-16 16:22:31 +080097
98 /*
99 * Check about attributes are supported by the NFSv4 server or not.
100 * According to spec, unsupported attributes return ERR_ATTRNOTSUPP.
101 */
102 if ((bmval[0] & ~nfsd_suppattrs0(cstate->minorversion)) ||
103 (bmval[1] & ~nfsd_suppattrs1(cstate->minorversion)) ||
104 (bmval[2] & ~nfsd_suppattrs2(cstate->minorversion)))
105 return nfserr_attrnotsupp;
106
107 /*
Trond Myklebusta06b1262009-08-31 15:16:11 -0400108 * Check FATTR4_WORD0_ACL can be supported
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800109 * in current environment or not.
110 */
111 if (bmval[0] & FATTR4_WORD0_ACL) {
112 if (!IS_POSIXACL(dentry->d_inode))
113 return nfserr_attrnotsupp;
114 }
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800115
116 /*
117 * According to spec, read-only attributes return ERR_INVAL.
118 */
119 if (writable) {
120 if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1]) ||
121 (bmval[2] & ~writable[2]))
122 return nfserr_inval;
123 }
124
125 return nfs_ok;
126}
127
128static __be32
129nfsd4_check_open_attributes(struct svc_rqst *rqstp,
130 struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
131{
132 __be32 status = nfs_ok;
133
134 if (open->op_create == NFS4_OPEN_CREATE) {
135 if (open->op_createmode == NFS4_CREATE_UNCHECKED
136 || open->op_createmode == NFS4_CREATE_GUARDED)
137 status = check_attr_support(rqstp, cstate,
138 open->op_bmval, nfsd_attrmask);
139 else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1)
140 status = check_attr_support(rqstp, cstate,
141 open->op_bmval, nfsd41_ex_attrmask);
142 }
143
144 return status;
145}
146
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800147static int
148is_create_with_attrs(struct nfsd4_open *open)
149{
150 return open->op_create == NFS4_OPEN_CREATE
151 && (open->op_createmode == NFS4_CREATE_UNCHECKED
152 || open->op_createmode == NFS4_CREATE_GUARDED
153 || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1);
154}
155
156/*
157 * if error occurs when setting the acl, just clear the acl bit
158 * in the returned attr bitmap.
159 */
160static void
161do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp,
162 struct nfs4_acl *acl, u32 *bmval)
163{
164 __be32 status;
165
166 status = nfsd4_set_nfs4_acl(rqstp, fhp, acl);
167 if (status)
168 /*
169 * We should probably fail the whole open at this point,
170 * but we've already created the file, so it's too late;
171 * So this seems the least of evils:
172 */
173 bmval[0] &= ~FATTR4_WORD0_ACL;
174}
175
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176static inline void
177fh_dup2(struct svc_fh *dst, struct svc_fh *src)
178{
179 fh_put(dst);
180 dget(src->fh_dentry);
181 if (src->fh_export)
Kinglong Meebf18f162014-06-10 22:06:44 +0800182 exp_get(src->fh_export);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183 *dst = *src;
184}
185
Al Virob37ad282006-10-19 23:28:59 -0700186static __be32
J. Bruce Fieldsdc730e12006-10-17 00:10:13 -0700187do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188{
Al Virob37ad282006-10-19 23:28:59 -0700189 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190
191 if (open->op_truncate &&
192 !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE))
193 return nfserr_inval;
194
J. Bruce Fieldsa0432262011-08-25 10:48:39 -0400195 accmode |= NFSD_MAY_READ_IF_EXEC;
196
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 if (open->op_share_access & NFS4_SHARE_ACCESS_READ)
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200198 accmode |= NFSD_MAY_READ;
J. Bruce Fields9801d8a2006-10-17 00:10:14 -0700199 if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE)
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200200 accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC);
J. Bruce Fields57ecb342009-12-01 19:42:57 -0500201 if (open->op_share_deny & NFS4_SHARE_DENY_READ)
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200202 accmode |= NFSD_MAY_WRITE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203
204 status = fh_verify(rqstp, current_fh, S_IFREG, accmode);
205
206 return status;
207}
208
J. Bruce Fieldsaadab6c2011-08-15 16:55:02 -0400209static __be32 nfsd_check_obj_isreg(struct svc_fh *fh)
210{
211 umode_t mode = fh->fh_dentry->d_inode->i_mode;
212
213 if (S_ISREG(mode))
214 return nfs_ok;
215 if (S_ISDIR(mode))
216 return nfserr_isdir;
217 /*
218 * Using err_symlink as our catch-all case may look odd; but
219 * there's no other obvious error for this case in 4.0, and we
220 * happen to know that it will cause the linux v4 client to do
221 * the right thing on attempts to open something other than a
222 * regular file.
223 */
224 return nfserr_symlink;
225}
226
J. Bruce Fieldsbbc9c362013-03-22 18:03:49 -0400227static void nfsd4_set_open_owner_reply_cache(struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh *resfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228{
J. Bruce Fieldsbbc9c362013-03-22 18:03:49 -0400229 if (nfsd4_has_session(cstate))
230 return;
231 fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh,
232 &resfh->fh_handle);
233}
234
235static __be32
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500236do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh **resfh)
J. Bruce Fieldsbbc9c362013-03-22 18:03:49 -0400237{
238 struct svc_fh *current_fh = &cstate->current_fh;
Neil Brown7007c902012-12-07 15:40:55 -0500239 int accmode;
Al Virob37ad282006-10-19 23:28:59 -0700240 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500242 *resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL);
243 if (!*resfh)
J. Bruce Fields59deeb92012-01-27 16:49:55 -0500244 return nfserr_jukebox;
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500245 fh_init(*resfh, NFS4_FHSIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246 open->op_truncate = 0;
247
248 if (open->op_create) {
Benny Halevy79fb54a2009-04-03 08:29:17 +0300249 /* FIXME: check session persistence and pnfs flags.
250 * The nfsv4.1 spec requires the following semantics:
251 *
252 * Persistent | pNFS | Server REQUIRED | Client Allowed
253 * Reply Cache | server | |
254 * -------------+--------+-----------------+--------------------
255 * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1
256 * | | | (SHOULD)
257 * | | and EXCLUSIVE4 | or EXCLUSIVE4
258 * | | | (SHOULD NOT)
259 * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1
260 * yes | no | GUARDED4 | GUARDED4
261 * yes | yes | GUARDED4 | GUARDED4
262 */
263
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264 /*
265 * Note: create modes (UNCHECKED,GUARDED...) are the same
Mi Jinlongac6721a2011-04-20 17:06:25 +0800266 * in NFSv4 as in v3 except EXCLUSIVE4_1.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267 */
Mi Jinlongac6721a2011-04-20 17:06:25 +0800268 status = do_nfsd_create(rqstp, current_fh, open->op_fname.data,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 open->op_fname.len, &open->op_iattr,
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500270 *resfh, open->op_createmode,
Jeff Layton749997e2007-07-31 00:37:51 -0700271 (u32 *)open->op_verf.data,
J. Bruce Fields856121b2011-10-13 11:37:11 -0400272 &open->op_truncate, &open->op_created);
Jeff Layton749997e2007-07-31 00:37:51 -0700273
David Quigley18032ca2013-05-02 13:19:10 -0400274 if (!status && open->op_label.len)
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500275 nfsd4_security_inode_setsecctx(*resfh, &open->op_label, open->op_bmval);
David Quigley18032ca2013-05-02 13:19:10 -0400276
J. Bruce Fields99f88722009-02-02 15:12:27 -0500277 /*
278 * Following rfc 3530 14.2.16, use the returned bitmask
279 * to indicate which attributes we used to store the
280 * verifier:
Jeff Layton749997e2007-07-31 00:37:51 -0700281 */
282 if (open->op_createmode == NFS4_CREATE_EXCLUSIVE && status == 0)
J. Bruce Fields99f88722009-02-02 15:12:27 -0500283 open->op_bmval[1] = (FATTR4_WORD1_TIME_ACCESS |
J. Bruce Fields9dc4e6c2012-04-09 18:06:49 -0400284 FATTR4_WORD1_TIME_MODIFY);
J. Bruce Fields43357232014-01-24 18:04:40 -0500285 } else
286 /*
287 * Note this may exit with the parent still locked.
288 * We will hold the lock until nfsd4_open's final
289 * lookup, to prevent renames or unlinks until we've had
290 * a chance to an acquire a delegation if appropriate.
291 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 status = nfsd_lookup(rqstp, current_fh,
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500293 open->op_fname.data, open->op_fname.len, *resfh);
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800294 if (status)
295 goto out;
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500296 status = nfsd_check_obj_isreg(*resfh);
J. Bruce Fields9dc4e6c2012-04-09 18:06:49 -0400297 if (status)
298 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800300 if (is_create_with_attrs(open) && open->op_acl != NULL)
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500301 do_set_nfs4_acl(rqstp, *resfh, open->op_acl, open->op_bmval);
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800302
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500303 nfsd4_set_open_owner_reply_cache(cstate, open, *resfh);
Neil Brown7007c902012-12-07 15:40:55 -0500304 accmode = NFSD_MAY_NOP;
J. Bruce Fields89f6c332013-06-19 15:47:37 -0400305 if (open->op_created ||
306 open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR)
Neil Brown7007c902012-12-07 15:40:55 -0500307 accmode |= NFSD_MAY_OWNER_OVERRIDE;
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500308 status = do_open_permission(rqstp, *resfh, open, accmode);
J. Bruce Fields41fd1e42012-01-27 16:26:02 -0500309 set_change_info(&open->op_cinfo, current_fh);
J. Bruce Fieldsaf858522006-11-08 17:44:39 -0800310out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 return status;
312}
313
Al Virob37ad282006-10-19 23:28:59 -0700314static __be32
J. Bruce Fieldsbbc9c362013-03-22 18:03:49 -0400315do_open_fhandle(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316{
J. Bruce Fieldsbbc9c362013-03-22 18:03:49 -0400317 struct svc_fh *current_fh = &cstate->current_fh;
Al Virob37ad282006-10-19 23:28:59 -0700318 __be32 status;
J. Bruce Fields9f415eb2013-05-03 16:09:09 -0400319 int accmode = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321 /* We don't know the target directory, and therefore can not
322 * set the change info
323 */
324
325 memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info));
326
J. Bruce Fieldsbbc9c362013-03-22 18:03:49 -0400327 nfsd4_set_open_owner_reply_cache(cstate, open, current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328
329 open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) &&
330 (open->op_iattr.ia_size == 0);
J. Bruce Fields9f415eb2013-05-03 16:09:09 -0400331 /*
332 * In the delegation case, the client is telling us about an
333 * open that it *already* performed locally, some time ago. We
334 * should let it succeed now if possible.
335 *
336 * In the case of a CLAIM_FH open, on the other hand, the client
337 * may be counting on us to enforce permissions (the Linux 4.1
338 * client uses this for normal opens, for example).
339 */
340 if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEG_CUR_FH)
341 accmode = NFSD_MAY_OWNER_OVERRIDE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342
J. Bruce Fields9f415eb2013-05-03 16:09:09 -0400343 status = do_open_permission(rqstp, current_fh, open, accmode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344
345 return status;
346}
347
Andy Adamson60adfc52009-04-03 08:28:50 +0300348static void
349copy_clientid(clientid_t *clid, struct nfsd4_session *session)
350{
351 struct nfsd4_sessionid *sid =
352 (struct nfsd4_sessionid *)session->se_sessionid.data;
353
354 clid->cl_boot = sid->clientid.cl_boot;
355 clid->cl_id = sid->clientid.cl_id;
356}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357
J.Bruce Fields71911552006-12-13 00:35:29 -0800358static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800359nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -0800360 struct nfsd4_open *open)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361{
Al Virob37ad282006-10-19 23:28:59 -0700362 __be32 status;
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500363 struct svc_fh *resfh = NULL;
Andy Adamson66689582009-04-03 08:28:45 +0300364 struct nfsd4_compoundres *resp;
Stanislav Kinsbursky3320fef192012-11-14 18:22:07 +0300365 struct net *net = SVC_NET(rqstp);
366 struct nfsd_net *nn = net_generic(net, nfsd_net_id);
Andy Adamson66689582009-04-03 08:28:45 +0300367
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400368 dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369 (int)open->op_fname.len, open->op_fname.data,
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400370 open->op_openowner);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372 /* This check required by spec. */
373 if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
374 return nfserr_inval;
375
J. Bruce Fields856121b2011-10-13 11:37:11 -0400376 open->op_created = 0;
Mi Jinlongab1350b2011-07-14 15:06:26 +0800377 /*
378 * RFC5661 18.51.3
379 * Before RECLAIM_COMPLETE done, server should deny new lock
380 */
381 if (nfsd4_has_session(cstate) &&
Jeff Laytona52d7262012-03-21 09:52:02 -0400382 !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE,
383 &cstate->session->se_client->cl_flags) &&
Mi Jinlongab1350b2011-07-14 15:06:26 +0800384 open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
385 return nfserr_grace;
386
Andy Adamson60adfc52009-04-03 08:28:50 +0300387 if (nfsd4_has_session(cstate))
388 copy_clientid(&open->op_clientid, cstate->session);
389
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390 /* check seqid for replay. set nfs4_owner */
Andy Adamson66689582009-04-03 08:28:45 +0300391 resp = rqstp->rq_resp;
Stanislav Kinsbursky3320fef192012-11-14 18:22:07 +0300392 status = nfsd4_process_open1(&resp->cstate, open, nn);
Al Viroa90b0612006-10-19 23:29:03 -0700393 if (status == nfserr_replay_me) {
J. Bruce Fieldsfe0750e2011-07-30 23:33:59 -0400394 struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800395 fh_put(&cstate->current_fh);
J. Bruce Fieldsa4773c082009-02-02 17:23:10 -0500396 fh_copy_shallow(&cstate->current_fh.fh_handle,
397 &rp->rp_openfh);
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200398 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399 if (status)
400 dprintk("nfsd4_open: replay failed"
401 " restoring previous filehandle\n");
402 else
Al Viroa90b0612006-10-19 23:29:03 -0700403 status = nfserr_replay_me;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 }
405 if (status)
406 goto out;
J. Bruce Fields9d313b12013-02-28 12:51:49 -0800407 if (open->op_xdr_error) {
408 status = open->op_xdr_error;
409 goto out;
410 }
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800411
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800412 status = nfsd4_check_open_attributes(rqstp, cstate, open);
413 if (status)
414 goto out;
415
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800416 /* Openowner is now set, so sequence id will get bumped. Now we need
417 * these checks before we do any creates: */
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800418 status = nfserr_grace;
Stanislav Kinsbursky3320fef192012-11-14 18:22:07 +0300419 if (locks_in_grace(net) && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800420 goto out;
421 status = nfserr_no_grace;
Stanislav Kinsbursky3320fef192012-11-14 18:22:07 +0300422 if (!locks_in_grace(net) && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
J. Bruce Fieldscbd0d512006-02-07 12:58:32 -0800423 goto out;
J. Bruce Fieldsfb553c02006-01-18 17:43:36 -0800424
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425 switch (open->op_claim_type) {
NeilBrown0dd3c192005-06-23 22:02:56 -0700426 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427 case NFS4_OPEN_CLAIM_NULL:
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500428 status = do_open_lookup(rqstp, cstate, open, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429 if (status)
430 goto out;
431 break;
432 case NFS4_OPEN_CLAIM_PREVIOUS:
Stanislav Kinsbursky3320fef192012-11-14 18:22:07 +0300433 status = nfs4_check_open_reclaim(&open->op_clientid,
Trond Myklebust0fe492d2014-06-30 11:48:47 -0400434 cstate, nn);
Mi Jinlong0cf99b92011-11-23 10:48:40 +0800435 if (status)
436 goto out;
Jeff Laytonba5378b2014-05-30 09:09:28 -0400437 open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED;
J. Bruce Fields8b289b22011-10-19 11:52:12 -0400438 case NFS4_OPEN_CLAIM_FH:
439 case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
J. Bruce Fieldsbbc9c362013-03-22 18:03:49 -0400440 status = do_open_fhandle(rqstp, cstate, open);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 if (status)
442 goto out;
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500443 resfh = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444 break;
J. Bruce Fields8b289b22011-10-19 11:52:12 -0400445 case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446 case NFS4_OPEN_CLAIM_DELEGATE_PREV:
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400447 dprintk("NFSD: unsupported OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448 open->op_claim_type);
449 status = nfserr_notsupp;
450 goto out;
451 default:
J. Bruce Fields2fdada02007-07-27 16:10:37 -0400452 dprintk("NFSD: Invalid OPEN claim type %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453 open->op_claim_type);
454 status = nfserr_inval;
455 goto out;
456 }
457 /*
458 * nfsd4_process_open2() does the actual opening of the file. If
459 * successful, it (1) truncates the file if open->op_truncate was
460 * set, (2) sets open->op_stateid, (3) sets open->op_delegation.
461 */
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500462 status = nfsd4_process_open2(rqstp, resfh, open);
Jeff Laytonb3fbfe02014-07-29 21:37:44 -0400463 WARN(status && open->op_created,
464 "nfsd4_process_open2 failed to open newly-created file! status=%u\n",
465 be32_to_cpu(status));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466out:
J. Bruce Fieldsc0e6bee2012-01-27 17:26:06 -0500467 if (resfh && resfh != &cstate->current_fh) {
468 fh_dup2(&cstate->current_fh, resfh);
469 fh_put(resfh);
470 kfree(resfh);
471 }
Jeff Layton58fb12e2014-07-29 21:34:27 -0400472 nfsd4_cleanup_open_state(cstate, open, status);
J. Bruce Fields9411b1d2013-04-01 16:37:12 -0400473 nfsd4_bump_seqid(cstate, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 return status;
475}
476
477/*
J. Bruce Fields9d313b12013-02-28 12:51:49 -0800478 * OPEN is the only seqid-mutating operation whose decoding can fail
479 * with a seqid-mutating error (specifically, decoding of user names in
480 * the attributes). Therefore we have to do some processing to look up
481 * the stateowner so that we can bump the seqid.
482 */
483static __be32 nfsd4_open_omfg(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_op *op)
484{
485 struct nfsd4_open *open = (struct nfsd4_open *)&op->u;
486
487 if (!seqid_mutating_err(ntohl(op->status)))
488 return op->status;
489 if (nfsd4_has_session(cstate))
490 return op->status;
491 open->op_xdr_error = op->status;
492 return nfsd4_open(rqstp, cstate, open);
493}
494
495/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496 * filehandle-manipulating ops.
497 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800498static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800499nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
500 struct svc_fh **getfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800502 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503 return nfserr_nofilehandle;
504
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800505 *getfh = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506 return nfs_ok;
507}
508
J.Bruce Fields71911552006-12-13 00:35:29 -0800509static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800510nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
511 struct nfsd4_putfh *putfh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800513 fh_put(&cstate->current_fh);
514 cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
515 memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
516 putfh->pf_fhlen);
J. Bruce Fields68d93182011-04-08 17:00:50 -0400517 return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518}
519
J.Bruce Fields71911552006-12-13 00:35:29 -0800520static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800521nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
522 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523{
Al Virob37ad282006-10-19 23:28:59 -0700524 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800526 fh_put(&cstate->current_fh);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700527 status = exp_pseudoroot(rqstp, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528 return status;
529}
530
J.Bruce Fields71911552006-12-13 00:35:29 -0800531static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800532nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
533 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800535 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536 return nfserr_restorefh;
537
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800538 fh_dup2(&cstate->current_fh, &cstate->save_fh);
Tigran Mkrtchyan37c593c2012-02-13 22:55:32 +0100539 if (HAS_STATE_ID(cstate, SAVED_STATE_ID_FLAG)) {
540 memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t));
541 SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG);
542 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543 return nfs_ok;
544}
545
J.Bruce Fields71911552006-12-13 00:35:29 -0800546static __be32
J.Bruce Fieldsb5914802006-12-13 00:35:38 -0800547nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
548 void *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800550 if (!cstate->current_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551 return nfserr_nofilehandle;
552
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800553 fh_dup2(&cstate->save_fh, &cstate->current_fh);
Tigran Mkrtchyan37c593c2012-02-13 22:55:32 +0100554 if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG)) {
555 memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t));
556 SET_STATE_ID(cstate, SAVED_STATE_ID_FLAG);
557 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558 return nfs_ok;
559}
560
561/*
562 * misc nfsv4 ops
563 */
J.Bruce Fields71911552006-12-13 00:35:29 -0800564static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800565nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
566 struct nfsd4_access *access)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567{
568 if (access->ac_req_access & ~NFS3_ACCESS_FULL)
569 return nfserr_inval;
570
571 access->ac_resp_access = access->ac_req_access;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800572 return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
573 &access->ac_supported);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574}
575
Stanislav Kinsburskyb9c0ef82012-12-06 14:23:19 +0300576static void gen_boot_verifier(nfs4_verifier *verifier, struct net *net)
Chuck Leverab4684d2012-03-02 17:13:50 -0500577{
578 __be32 verf[2];
Stanislav Kinsburskyb9c0ef82012-12-06 14:23:19 +0300579 struct nfsd_net *nn = net_generic(net, nfsd_net_id);
Chuck Leverab4684d2012-03-02 17:13:50 -0500580
Jeff Laytonf4199922014-06-17 07:44:11 -0400581 /*
582 * This is opaque to client, so no need to byte-swap. Use
583 * __force to keep sparse happy
584 */
585 verf[0] = (__force __be32)nn->nfssvc_boot.tv_sec;
586 verf[1] = (__force __be32)nn->nfssvc_boot.tv_usec;
Chuck Leverab4684d2012-03-02 17:13:50 -0500587 memcpy(verifier->data, verf, sizeof(verifier->data));
588}
589
J.Bruce Fields71911552006-12-13 00:35:29 -0800590static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800591nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
592 struct nfsd4_commit *commit)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593{
Stanislav Kinsburskyb9c0ef82012-12-06 14:23:19 +0300594 gen_boot_verifier(&commit->co_verf, SVC_NET(rqstp));
J. Bruce Fields75c096f2011-08-15 18:39:32 -0400595 return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800596 commit->co_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597}
598
Al Virob37ad282006-10-19 23:28:59 -0700599static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800600nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
601 struct nfsd4_create *create)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602{
603 struct svc_fh resfh;
Al Virob37ad282006-10-19 23:28:59 -0700604 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 dev_t rdev;
606
607 fh_init(&resfh, NFS4_FHSIZE);
608
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200609 status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR,
610 NFSD_MAY_CREATE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611 if (status)
612 return status;
613
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800614 status = check_attr_support(rqstp, cstate, create->cr_bmval,
615 nfsd_attrmask);
616 if (status)
617 return status;
618
Linus Torvalds1da177e2005-04-16 15:20:36 -0700619 switch (create->cr_type) {
620 case NF4LNK:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800621 status = nfsd_symlink(rqstp, &cstate->current_fh,
622 create->cr_name, create->cr_namelen,
Kinglong Mee1e444f52014-07-01 17:48:02 +0800623 create->cr_data, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624 break;
625
626 case NF4BLK:
627 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
628 if (MAJOR(rdev) != create->cr_specdata1 ||
629 MINOR(rdev) != create->cr_specdata2)
630 return nfserr_inval;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800631 status = nfsd_create(rqstp, &cstate->current_fh,
632 create->cr_name, create->cr_namelen,
633 &create->cr_iattr, S_IFBLK, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634 break;
635
636 case NF4CHR:
637 rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
638 if (MAJOR(rdev) != create->cr_specdata1 ||
639 MINOR(rdev) != create->cr_specdata2)
640 return nfserr_inval;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800641 status = nfsd_create(rqstp, &cstate->current_fh,
642 create->cr_name, create->cr_namelen,
643 &create->cr_iattr,S_IFCHR, rdev, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644 break;
645
646 case NF4SOCK:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800647 status = nfsd_create(rqstp, &cstate->current_fh,
648 create->cr_name, create->cr_namelen,
649 &create->cr_iattr, S_IFSOCK, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700650 break;
651
652 case NF4FIFO:
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800653 status = nfsd_create(rqstp, &cstate->current_fh,
654 create->cr_name, create->cr_namelen,
655 &create->cr_iattr, S_IFIFO, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700656 break;
657
658 case NF4DIR:
659 create->cr_iattr.ia_valid &= ~ATTR_SIZE;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800660 status = nfsd_create(rqstp, &cstate->current_fh,
661 create->cr_name, create->cr_namelen,
662 &create->cr_iattr, S_IFDIR, 0, &resfh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663 break;
664
665 default:
666 status = nfserr_badtype;
667 }
668
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800669 if (status)
670 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700671
David Quigley18032ca2013-05-02 13:19:10 -0400672 if (create->cr_label.len)
673 nfsd4_security_inode_setsecctx(&resfh, &create->cr_label, create->cr_bmval);
674
Yu Zhiguo9208faf2009-07-06 17:24:16 +0800675 if (create->cr_acl != NULL)
676 do_set_nfs4_acl(rqstp, &resfh, create->cr_acl,
677 create->cr_bmval);
678
679 fh_unlock(&cstate->current_fh);
680 set_change_info(&create->cr_cinfo, &cstate->current_fh);
681 fh_dup2(&cstate->current_fh, &resfh);
682out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683 fh_put(&resfh);
684 return status;
685}
686
J.Bruce Fields71911552006-12-13 00:35:29 -0800687static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800688nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
689 struct nfsd4_getattr *getattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700690{
Al Virob37ad282006-10-19 23:28:59 -0700691 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692
Miklos Szeredi8837abc2008-06-16 13:20:29 +0200693 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 if (status)
695 return status;
696
697 if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
698 return nfserr_inval;
699
Andy Adamson7e705702009-04-03 08:29:11 +0300700 getattr->ga_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
701 getattr->ga_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
702 getattr->ga_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800704 getattr->ga_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705 return nfs_ok;
706}
707
J.Bruce Fields71911552006-12-13 00:35:29 -0800708static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800709nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
710 struct nfsd4_link *link)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700711{
Al Virob37ad282006-10-19 23:28:59 -0700712 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800714 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715 return status;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800716 status = nfsd_link(rqstp, &cstate->current_fh,
717 link->li_name, link->li_namelen, &cstate->save_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718 if (!status)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800719 set_change_info(&link->li_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720 return status;
721}
722
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500723static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700724{
725 struct svc_fh tmp_fh;
Al Virob37ad282006-10-19 23:28:59 -0700726 __be32 ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727
728 fh_init(&tmp_fh, NFS4_FHSIZE);
J. Bruce Fieldsdf547ef2007-07-17 04:04:43 -0700729 ret = exp_pseudoroot(rqstp, &tmp_fh);
730 if (ret)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731 return ret;
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500732 if (tmp_fh.fh_dentry == fh->fh_dentry) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733 fh_put(&tmp_fh);
734 return nfserr_noent;
735 }
736 fh_put(&tmp_fh);
J. Bruce Fields0ff7ab42010-12-16 10:06:27 -0500737 return nfsd_lookup(rqstp, fh, "..", 2, fh);
738}
739
740static __be32
741nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
742 void *arg)
743{
744 return nfsd4_do_lookupp(rqstp, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700745}
746
J.Bruce Fields71911552006-12-13 00:35:29 -0800747static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800748nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
749 struct nfsd4_lookup *lookup)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700750{
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800751 return nfsd_lookup(rqstp, &cstate->current_fh,
752 lookup->lo_name, lookup->lo_len,
753 &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754}
755
J.Bruce Fields71911552006-12-13 00:35:29 -0800756static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800757nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
758 struct nfsd4_read *read)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700759{
Al Virob37ad282006-10-19 23:28:59 -0700760 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761
762 /* no need to check permission - this will be done in nfsd_read() */
763
NeilBrown7e06b7f2005-06-23 22:03:13 -0700764 read->rd_filp = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700765 if (read->rd_offset >= OFFSET_MAX)
766 return nfserr_inval;
767
J. Bruce Fields9b3234b2012-12-04 18:03:46 -0500768 /*
769 * If we do a zero copy read, then a client will see read data
770 * that reflects the state of the file *after* performing the
771 * following compound.
772 *
773 * To ensure proper ordering, we therefore turn off zero copy if
774 * the client wants us to do more in this compound:
775 */
776 if (!nfsd4_last_compound_op(rqstp))
Jeff Layton779fb0f2014-11-19 07:51:18 -0500777 clear_bit(RQ_SPLICE_OK, &rqstp->rq_flags);
J. Bruce Fields9b3234b2012-12-04 18:03:46 -0500778
Linus Torvalds1da177e2005-04-16 15:20:36 -0700779 /* check stateid */
Stanislav Kinsbursky5ccb0062012-07-25 16:57:22 +0400780 if ((status = nfs4_preprocess_stateid_op(SVC_NET(rqstp),
781 cstate, &read->rd_stateid,
Benny Halevydd453df2009-04-03 08:28:41 +0300782 RD_STATE, &read->rd_filp))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700783 dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
784 goto out;
785 }
786 status = nfs_ok;
787out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700788 read->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800789 read->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700790 return status;
791}
792
J.Bruce Fields71911552006-12-13 00:35:29 -0800793static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800794nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
795 struct nfsd4_readdir *readdir)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796{
797 u64 cookie = readdir->rd_cookie;
798 static const nfs4_verifier zeroverf;
799
800 /* no need to check permission - this will be done in nfsd_readdir() */
801
802 if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)
803 return nfserr_inval;
804
Andy Adamson7e705702009-04-03 08:29:11 +0300805 readdir->rd_bmval[0] &= nfsd_suppattrs0(cstate->minorversion);
806 readdir->rd_bmval[1] &= nfsd_suppattrs1(cstate->minorversion);
807 readdir->rd_bmval[2] &= nfsd_suppattrs2(cstate->minorversion);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700808
Bernd Schubert832023b2011-08-08 17:38:08 +0200809 if ((cookie == 1) || (cookie == 2) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810 (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE)))
811 return nfserr_bad_cookie;
812
813 readdir->rd_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800814 readdir->rd_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700815 return nfs_ok;
816}
817
J.Bruce Fields71911552006-12-13 00:35:29 -0800818static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800819nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
820 struct nfsd4_readlink *readlink)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700821{
822 readlink->rl_rqstp = rqstp;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800823 readlink->rl_fhp = &cstate->current_fh;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700824 return nfs_ok;
825}
826
J.Bruce Fields71911552006-12-13 00:35:29 -0800827static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800828nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
829 struct nfsd4_remove *remove)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700830{
Al Virob37ad282006-10-19 23:28:59 -0700831 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700832
Stanislav Kinsbursky5ccb0062012-07-25 16:57:22 +0400833 if (locks_in_grace(SVC_NET(rqstp)))
NeilBrownc815afc2005-06-23 22:03:00 -0700834 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800835 status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
836 remove->rm_name, remove->rm_namelen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837 if (!status) {
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800838 fh_unlock(&cstate->current_fh);
839 set_change_info(&remove->rm_cinfo, &cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840 }
841 return status;
842}
843
J.Bruce Fields71911552006-12-13 00:35:29 -0800844static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800845nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
846 struct nfsd4_rename *rename)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847{
Al Virob37ad282006-10-19 23:28:59 -0700848 __be32 status = nfserr_nofilehandle;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700849
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800850 if (!cstate->save_fh.fh_dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851 return status;
Stanislav Kinsbursky5ccb0062012-07-25 16:57:22 +0400852 if (locks_in_grace(SVC_NET(rqstp)) &&
853 !(cstate->save_fh.fh_export->ex_flags & NFSEXP_NOSUBTREECHECK))
NeilBrownc815afc2005-06-23 22:03:00 -0700854 return nfserr_grace;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800855 status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
856 rename->rn_snamelen, &cstate->current_fh,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857 rename->rn_tname, rename->rn_tnamelen);
J. Bruce Fields2a6cf942013-04-30 15:28:51 -0400858 if (status)
859 return status;
860 set_change_info(&rename->rn_sinfo, &cstate->current_fh);
861 set_change_info(&rename->rn_tinfo, &cstate->save_fh);
862 return nfs_ok;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700863}
864
J.Bruce Fields71911552006-12-13 00:35:29 -0800865static __be32
Andy Adamsondcb488a32007-07-17 04:04:51 -0700866nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
867 struct nfsd4_secinfo *secinfo)
868{
869 struct svc_fh resfh;
870 struct svc_export *exp;
871 struct dentry *dentry;
872 __be32 err;
873
874 fh_init(&resfh, NFS4_FHSIZE);
J. Bruce Fields29a78a32011-04-09 11:28:53 -0400875 err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC);
876 if (err)
877 return err;
Andy Adamsondcb488a32007-07-17 04:04:51 -0700878 err = nfsd_lookup_dentry(rqstp, &cstate->current_fh,
879 secinfo->si_name, secinfo->si_namelen,
880 &exp, &dentry);
881 if (err)
882 return err;
883 if (dentry->d_inode == NULL) {
884 exp_put(exp);
885 err = nfserr_noent;
886 } else
887 secinfo->si_exp = exp;
888 dput(dentry);
J. Bruce Fields56560b92010-12-16 09:57:15 -0500889 if (cstate->minorversion)
890 /* See rfc 5661 section 2.6.3.1.1.8 */
891 fh_put(&cstate->current_fh);
Andy Adamsondcb488a32007-07-17 04:04:51 -0700892 return err;
893}
894
895static __be32
J. Bruce Fields04f4ad12010-12-16 09:51:13 -0500896nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
897 struct nfsd4_secinfo_no_name *sin)
898{
899 __be32 err;
900
901 switch (sin->sin_style) {
902 case NFS4_SECINFO_STYLE4_CURRENT_FH:
903 break;
904 case NFS4_SECINFO_STYLE4_PARENT:
905 err = nfsd4_do_lookupp(rqstp, &cstate->current_fh);
906 if (err)
907 return err;
908 break;
909 default:
910 return nfserr_inval;
911 }
Kinglong Meebf18f162014-06-10 22:06:44 +0800912
913 sin->sin_exp = exp_get(cstate->current_fh.fh_export);
J. Bruce Fields04f4ad12010-12-16 09:51:13 -0500914 fh_put(&cstate->current_fh);
915 return nfs_ok;
916}
917
918static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800919nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
920 struct nfsd4_setattr *setattr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921{
Al Virob37ad282006-10-19 23:28:59 -0700922 __be32 status = nfs_ok;
Al Viro96f6f982012-04-12 23:47:00 -0400923 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700924
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925 if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
Stanislav Kinsbursky5ccb0062012-07-25 16:57:22 +0400926 status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate,
J. Bruce Fields6150ef02009-02-21 13:36:16 -0800927 &setattr->sa_stateid, WR_STATE, NULL);
J. Bruce Fields375c5542006-01-18 17:43:33 -0800928 if (status) {
Greg Banks3e3b4802006-10-02 02:17:41 -0700929 dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
J. Bruce Fields375c5542006-01-18 17:43:33 -0800930 return status;
931 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700932 }
Al Viro96f6f982012-04-12 23:47:00 -0400933 err = fh_want_write(&cstate->current_fh);
934 if (err)
935 return nfserrno(err);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700936 status = nfs_ok;
Yu Zhiguo3c8e0312009-05-16 16:22:31 +0800937
938 status = check_attr_support(rqstp, cstate, setattr->sa_bmval,
939 nfsd_attrmask);
940 if (status)
941 goto out;
942
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943 if (setattr->sa_acl != NULL)
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800944 status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
945 setattr->sa_acl);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700946 if (status)
Dave Hansen18f335a2008-02-15 14:37:38 -0800947 goto out;
David Quigley18032ca2013-05-02 13:19:10 -0400948 if (setattr->sa_label.len)
949 status = nfsd4_set_nfs4_label(rqstp, &cstate->current_fh,
950 &setattr->sa_label);
951 if (status)
952 goto out;
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800953 status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700954 0, (time_t)0);
Dave Hansen18f335a2008-02-15 14:37:38 -0800955out:
Al Virobad0dcf2011-11-23 12:03:18 -0500956 fh_drop_write(&cstate->current_fh);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957 return status;
958}
959
J. Bruce Fieldsffe11372012-11-15 14:52:19 -0500960static int fill_in_write_vector(struct kvec *vec, struct nfsd4_write *write)
961{
962 int i = 1;
963 int buflen = write->wr_buflen;
964
965 vec[0].iov_base = write->wr_head.iov_base;
966 vec[0].iov_len = min_t(int, buflen, write->wr_head.iov_len);
967 buflen -= vec[0].iov_len;
968
969 while (buflen) {
970 vec[i].iov_base = page_address(write->wr_pagelist[i - 1]);
971 vec[i].iov_len = min_t(int, PAGE_SIZE, buflen);
972 buflen -= vec[i].iov_len;
973 i++;
974 }
975 return i;
976}
977
J.Bruce Fields71911552006-12-13 00:35:29 -0800978static __be32
J.Bruce Fieldsca364312006-12-13 00:35:27 -0800979nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
980 struct nfsd4_write *write)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700981{
982 stateid_t *stateid = &write->wr_stateid;
983 struct file *filp = NULL;
Al Virob37ad282006-10-19 23:28:59 -0700984 __be32 status = nfs_ok;
David Shaw31dec252009-03-05 20:16:14 -0500985 unsigned long cnt;
J. Bruce Fieldsffe11372012-11-15 14:52:19 -0500986 int nvecs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700987
988 /* no need to check permission - this will be done in nfsd_write() */
989
990 if (write->wr_offset >= OFFSET_MAX)
991 return nfserr_inval;
992
Stanislav Kinsbursky5ccb0062012-07-25 16:57:22 +0400993 status = nfs4_preprocess_stateid_op(SVC_NET(rqstp),
994 cstate, stateid, WR_STATE, &filp);
J. Bruce Fields375c5542006-01-18 17:43:33 -0800995 if (status) {
996 dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
997 return status;
998 }
999
David Shaw31dec252009-03-05 20:16:14 -05001000 cnt = write->wr_buflen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001001 write->wr_how_written = write->wr_stable_how;
Stanislav Kinsburskyb9c0ef82012-12-06 14:23:19 +03001002 gen_boot_verifier(&write->wr_verifier, SVC_NET(rqstp));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001003
J. Bruce Fieldsffe11372012-11-15 14:52:19 -05001004 nvecs = fill_in_write_vector(rqstp->rq_vec, write);
1005 WARN_ON_ONCE(nvecs > ARRAY_SIZE(rqstp->rq_vec));
1006
J.Bruce Fieldsca364312006-12-13 00:35:27 -08001007 status = nfsd_write(rqstp, &cstate->current_fh, filp,
J. Bruce Fieldsffe11372012-11-15 14:52:19 -05001008 write->wr_offset, rqstp->rq_vec, nvecs,
David Shaw31dec252009-03-05 20:16:14 -05001009 &cnt, &write->wr_how_written);
NeilBrown7e06b7f2005-06-23 22:03:13 -07001010 if (filp)
1011 fput(filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001012
David Shaw31dec252009-03-05 20:16:14 -05001013 write->wr_bytes_written = cnt;
1014
Linus Torvalds1da177e2005-04-16 15:20:36 -07001015 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001016}
1017
Anna Schumaker24bab492014-09-26 13:58:27 -04001018static __be32
Anna Schumaker95d871f2014-11-07 14:44:26 -05001019nfsd4_fallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1020 struct nfsd4_fallocate *fallocate, int flags)
1021{
1022 __be32 status = nfserr_notsupp;
1023 struct file *file;
1024
1025 status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate,
1026 &fallocate->falloc_stateid,
1027 WR_STATE, &file);
1028 if (status != nfs_ok) {
1029 dprintk("NFSD: nfsd4_fallocate: couldn't process stateid!\n");
1030 return status;
1031 }
1032
1033 status = nfsd4_vfs_fallocate(rqstp, &cstate->current_fh, file,
1034 fallocate->falloc_offset,
1035 fallocate->falloc_length,
1036 flags);
1037 fput(file);
1038 return status;
1039}
1040
1041static __be32
1042nfsd4_allocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1043 struct nfsd4_fallocate *fallocate)
1044{
1045 return nfsd4_fallocate(rqstp, cstate, fallocate, 0);
1046}
1047
1048static __be32
Anna Schumakerb0cb9082014-11-07 14:44:27 -05001049nfsd4_deallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1050 struct nfsd4_fallocate *fallocate)
1051{
1052 return nfsd4_fallocate(rqstp, cstate, fallocate,
1053 FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE);
1054}
1055
1056static __be32
Anna Schumaker24bab492014-09-26 13:58:27 -04001057nfsd4_seek(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1058 struct nfsd4_seek *seek)
1059{
1060 int whence;
1061 __be32 status;
1062 struct file *file;
1063
1064 status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate,
1065 &seek->seek_stateid,
1066 RD_STATE, &file);
1067 if (status) {
1068 dprintk("NFSD: nfsd4_seek: couldn't process stateid!\n");
1069 return status;
1070 }
1071
1072 switch (seek->seek_whence) {
1073 case NFS4_CONTENT_DATA:
1074 whence = SEEK_DATA;
1075 break;
1076 case NFS4_CONTENT_HOLE:
1077 whence = SEEK_HOLE;
1078 break;
1079 default:
1080 status = nfserr_union_notsupp;
1081 goto out;
1082 }
1083
1084 /*
1085 * Note: This call does change file->f_pos, but nothing in NFSD
1086 * should ever file->f_pos.
1087 */
1088 seek->seek_pos = vfs_llseek(file, seek->seek_offset, whence);
1089 if (seek->seek_pos < 0)
1090 status = nfserrno(seek->seek_pos);
1091 else if (seek->seek_pos >= i_size_read(file_inode(file)))
1092 seek->seek_eof = true;
1093
1094out:
1095 fput(file);
1096 return status;
1097}
1098
Linus Torvalds1da177e2005-04-16 15:20:36 -07001099/* This routine never returns NFS_OK! If there are no other errors, it
1100 * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the
1101 * attributes matched. VERIFY is implemented by mapping NFSERR_SAME
1102 * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
1103 */
Al Virob37ad282006-10-19 23:28:59 -07001104static __be32
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -08001105_nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
J.Bruce Fieldsca364312006-12-13 00:35:27 -08001106 struct nfsd4_verify *verify)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001107{
Al Viro2ebbc012006-10-19 23:28:58 -07001108 __be32 *buf, *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001109 int count;
Al Virob37ad282006-10-19 23:28:59 -07001110 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001111
Miklos Szeredi8837abc2008-06-16 13:20:29 +02001112 status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001113 if (status)
1114 return status;
1115
Yu Zhiguo3c8e0312009-05-16 16:22:31 +08001116 status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL);
1117 if (status)
1118 return status;
1119
Linus Torvalds1da177e2005-04-16 15:20:36 -07001120 if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)
1121 || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1))
1122 return nfserr_inval;
1123 if (verify->ve_attrlen & 3)
1124 return nfserr_inval;
1125
1126 /* count in words:
1127 * bitmap_len(1) + bitmap(2) + attr_len(1) = 4
1128 */
1129 count = 4 + (verify->ve_attrlen >> 2);
1130 buf = kmalloc(count << 2, GFP_KERNEL);
1131 if (!buf)
J. Bruce Fields3e772462011-08-10 19:07:33 -04001132 return nfserr_jukebox;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133
J. Bruce Fields84822d02012-12-14 17:57:50 -05001134 p = buf;
J. Bruce Fieldsd5184652013-08-26 16:04:46 -04001135 status = nfsd4_encode_fattr_to_buf(&p, count, &cstate->current_fh,
J.Bruce Fieldsca364312006-12-13 00:35:27 -08001136 cstate->current_fh.fh_export,
J. Bruce Fieldsd5184652013-08-26 16:04:46 -04001137 cstate->current_fh.fh_dentry,
1138 verify->ve_bmval,
Frank Filz406a7ea2007-11-27 11:34:05 -08001139 rqstp, 0);
J. Bruce Fields41ae6e72013-08-21 15:32:50 -04001140 /*
1141 * If nfsd4_encode_fattr() ran out of space, assume that's because
1142 * the attributes are longer (hence different) than those given:
1143 */
J. Bruce Fields84822d02012-12-14 17:57:50 -05001144 if (status == nfserr_resource)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001145 status = nfserr_not_same;
1146 if (status)
1147 goto out_kfree;
1148
Benny Halevy95ec28c2009-04-03 08:29:08 +03001149 /* skip bitmap */
1150 p = buf + 1 + ntohl(buf[0]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001151 status = nfserr_not_same;
1152 if (ntohl(*p++) != verify->ve_attrlen)
1153 goto out_kfree;
1154 if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen))
1155 status = nfserr_same;
1156
1157out_kfree:
1158 kfree(buf);
1159 return status;
1160}
1161
J.Bruce Fieldsc954e2a2006-12-13 00:35:31 -08001162static __be32
1163nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1164 struct nfsd4_verify *verify)
1165{
1166 __be32 status;
1167
1168 status = _nfsd4_verify(rqstp, cstate, verify);
1169 return status == nfserr_not_same ? nfs_ok : status;
1170}
1171
1172static __be32
1173nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
1174 struct nfsd4_verify *verify)
1175{
1176 __be32 status;
1177
1178 status = _nfsd4_verify(rqstp, cstate, verify);
1179 return status == nfserr_same ? nfs_ok : status;
1180}
1181
Christoph Hellwig9cf514c2014-05-05 13:11:59 +02001182#ifdef CONFIG_NFSD_PNFS
1183static const struct nfsd4_layout_ops *
1184nfsd4_layout_verify(struct svc_export *exp, unsigned int layout_type)
1185{
1186 if (!exp->ex_layout_type) {
1187 dprintk("%s: export does not support pNFS\n", __func__);
1188 return NULL;
1189 }
1190
1191 if (exp->ex_layout_type != layout_type) {
1192 dprintk("%s: layout type %d not supported\n",
1193 __func__, layout_type);
1194 return NULL;
1195 }
1196
1197 return nfsd4_layout_ops[layout_type];
1198}
1199
1200static __be32
1201nfsd4_getdeviceinfo(struct svc_rqst *rqstp,
1202 struct nfsd4_compound_state *cstate,
1203 struct nfsd4_getdeviceinfo *gdp)
1204{
1205 const struct nfsd4_layout_ops *ops;
1206 struct nfsd4_deviceid_map *map;
1207 struct svc_export *exp;
1208 __be32 nfserr;
1209
1210 dprintk("%s: layout_type %u dev_id [0x%llx:0x%x] maxcnt %u\n",
1211 __func__,
1212 gdp->gd_layout_type,
1213 gdp->gd_devid.fsid_idx, gdp->gd_devid.generation,
1214 gdp->gd_maxcount);
1215
1216 map = nfsd4_find_devid_map(gdp->gd_devid.fsid_idx);
1217 if (!map) {
1218 dprintk("%s: couldn't find device ID to export mapping!\n",
1219 __func__);
1220 return nfserr_noent;
1221 }
1222
1223 exp = rqst_exp_find(rqstp, map->fsid_type, map->fsid);
1224 if (IS_ERR(exp)) {
1225 dprintk("%s: could not find device id\n", __func__);
1226 return nfserr_noent;
1227 }
1228
1229 nfserr = nfserr_layoutunavailable;
1230 ops = nfsd4_layout_verify(exp, gdp->gd_layout_type);
1231 if (!ops)
1232 goto out;
1233
1234 nfserr = nfs_ok;
1235 if (gdp->gd_maxcount != 0)
1236 nfserr = ops->proc_getdeviceinfo(exp->ex_path.mnt->mnt_sb, gdp);
1237
1238 gdp->gd_notify_types &= ops->notify_types;
1239 exp_put(exp);
1240out:
1241 return nfserr;
1242}
1243
1244static __be32
1245nfsd4_layoutget(struct svc_rqst *rqstp,
1246 struct nfsd4_compound_state *cstate,
1247 struct nfsd4_layoutget *lgp)
1248{
1249 struct svc_fh *current_fh = &cstate->current_fh;
1250 const struct nfsd4_layout_ops *ops;
1251 struct nfs4_layout_stateid *ls;
1252 __be32 nfserr;
1253 int accmode;
1254
1255 switch (lgp->lg_seg.iomode) {
1256 case IOMODE_READ:
1257 accmode = NFSD_MAY_READ;
1258 break;
1259 case IOMODE_RW:
1260 accmode = NFSD_MAY_READ | NFSD_MAY_WRITE;
1261 break;
1262 default:
1263 dprintk("%s: invalid iomode %d\n",
1264 __func__, lgp->lg_seg.iomode);
1265 nfserr = nfserr_badiomode;
1266 goto out;
1267 }
1268
1269 nfserr = fh_verify(rqstp, current_fh, 0, accmode);
1270 if (nfserr)
1271 goto out;
1272
1273 nfserr = nfserr_layoutunavailable;
1274 ops = nfsd4_layout_verify(current_fh->fh_export, lgp->lg_layout_type);
1275 if (!ops)
1276 goto out;
1277
1278 /*
1279 * Verify minlength and range as per RFC5661:
1280 * o If loga_length is less than loga_minlength,
1281 * the metadata server MUST return NFS4ERR_INVAL.
1282 * o If the sum of loga_offset and loga_minlength exceeds
1283 * NFS4_UINT64_MAX, and loga_minlength is not
1284 * NFS4_UINT64_MAX, the error NFS4ERR_INVAL MUST result.
1285 * o If the sum of loga_offset and loga_length exceeds
1286 * NFS4_UINT64_MAX, and loga_length is not NFS4_UINT64_MAX,
1287 * the error NFS4ERR_INVAL MUST result.
1288 */
1289 nfserr = nfserr_inval;
1290 if (lgp->lg_seg.length < lgp->lg_minlength ||
1291 (lgp->lg_minlength != NFS4_MAX_UINT64 &&
1292 lgp->lg_minlength > NFS4_MAX_UINT64 - lgp->lg_seg.offset) ||
1293 (lgp->lg_seg.length != NFS4_MAX_UINT64 &&
1294 lgp->lg_seg.length > NFS4_MAX_UINT64 - lgp->lg_seg.offset))
1295 goto out;
1296 if (lgp->lg_seg.length == 0)
1297 goto out;
1298
1299 nfserr = nfsd4_preprocess_layout_stateid(rqstp, cstate, &lgp->lg_sid,
1300 true, lgp->lg_layout_type, &ls);
1301 if (nfserr)
1302 goto out;
1303
1304 nfserr = ops->proc_layoutget(current_fh->fh_dentry->d_inode,
1305 current_fh, lgp);
1306 if (nfserr)
1307 goto out_put_stid;
1308
1309 nfserr = nfsd4_insert_layout(lgp, ls);
1310
1311out_put_stid:
1312 nfs4_put_stid(&ls->ls_stid);
1313out:
1314 return nfserr;
1315}
1316
1317static __be32
1318nfsd4_layoutcommit(struct svc_rqst *rqstp,
1319 struct nfsd4_compound_state *cstate,
1320 struct nfsd4_layoutcommit *lcp)
1321{
1322 const struct nfsd4_layout_seg *seg = &lcp->lc_seg;
1323 struct svc_fh *current_fh = &cstate->current_fh;
1324 const struct nfsd4_layout_ops *ops;
1325 loff_t new_size = lcp->lc_last_wr + 1;
1326 struct inode *inode;
1327 struct nfs4_layout_stateid *ls;
1328 __be32 nfserr;
1329
1330 nfserr = fh_verify(rqstp, current_fh, 0, NFSD_MAY_WRITE);
1331 if (nfserr)
1332 goto out;
1333
1334 nfserr = nfserr_layoutunavailable;
1335 ops = nfsd4_layout_verify(current_fh->fh_export, lcp->lc_layout_type);
1336 if (!ops)
1337 goto out;
1338 inode = current_fh->fh_dentry->d_inode;
1339
1340 nfserr = nfserr_inval;
1341 if (new_size <= seg->offset) {
1342 dprintk("pnfsd: last write before layout segment\n");
1343 goto out;
1344 }
1345 if (new_size > seg->offset + seg->length) {
1346 dprintk("pnfsd: last write beyond layout segment\n");
1347 goto out;
1348 }
1349 if (!lcp->lc_newoffset && new_size > i_size_read(inode)) {
1350 dprintk("pnfsd: layoutcommit beyond EOF\n");
1351 goto out;
1352 }
1353
1354 nfserr = nfsd4_preprocess_layout_stateid(rqstp, cstate, &lcp->lc_sid,
1355 false, lcp->lc_layout_type,
1356 &ls);
1357 if (nfserr) {
1358 /* fixup error code as per RFC5661 */
1359 if (nfserr == nfserr_bad_stateid)
1360 nfserr = nfserr_badlayout;
1361 goto out;
1362 }
1363
1364 nfserr = ops->proc_layoutcommit(inode, lcp);
1365 if (nfserr)
1366 goto out_put_stid;
1367
1368 if (new_size > i_size_read(inode)) {
1369 lcp->lc_size_chg = 1;
1370 lcp->lc_newsize = new_size;
1371 } else {
1372 lcp->lc_size_chg = 0;
1373 }
1374
1375out_put_stid:
1376 nfs4_put_stid(&ls->ls_stid);
1377out:
1378 return nfserr;
1379}
1380
1381static __be32
1382nfsd4_layoutreturn(struct svc_rqst *rqstp,
1383 struct nfsd4_compound_state *cstate,
1384 struct nfsd4_layoutreturn *lrp)
1385{
1386 struct svc_fh *current_fh = &cstate->current_fh;
1387 __be32 nfserr;
1388
1389 nfserr = fh_verify(rqstp, current_fh, 0, NFSD_MAY_NOP);
1390 if (nfserr)
1391 goto out;
1392
1393 nfserr = nfserr_layoutunavailable;
1394 if (!nfsd4_layout_verify(current_fh->fh_export, lrp->lr_layout_type))
1395 goto out;
1396
1397 switch (lrp->lr_seg.iomode) {
1398 case IOMODE_READ:
1399 case IOMODE_RW:
1400 case IOMODE_ANY:
1401 break;
1402 default:
1403 dprintk("%s: invalid iomode %d\n", __func__,
1404 lrp->lr_seg.iomode);
1405 nfserr = nfserr_inval;
1406 goto out;
1407 }
1408
1409 switch (lrp->lr_return_type) {
1410 case RETURN_FILE:
1411 nfserr = nfsd4_return_file_layouts(rqstp, cstate, lrp);
1412 break;
1413 case RETURN_FSID:
1414 case RETURN_ALL:
1415 nfserr = nfsd4_return_client_layouts(rqstp, cstate, lrp);
1416 break;
1417 default:
1418 dprintk("%s: invalid return_type %d\n", __func__,
1419 lrp->lr_return_type);
1420 nfserr = nfserr_inval;
1421 break;
1422 }
1423out:
1424 return nfserr;
1425}
1426#endif /* CONFIG_NFSD_PNFS */
1427
Linus Torvalds1da177e2005-04-16 15:20:36 -07001428/*
1429 * NULL call.
1430 */
Al Viro7111c662006-10-19 23:28:45 -07001431static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -07001432nfsd4_proc_null(struct svc_rqst *rqstp, void *argp, void *resp)
1433{
1434 return nfs_ok;
1435}
1436
Shankar Anande2b20952006-07-10 04:45:44 -07001437static inline void nfsd4_increment_op_stats(u32 opnum)
1438{
1439 if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP)
1440 nfsdstats.nfs4_opcount[opnum]++;
1441}
1442
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001443typedef __be32(*nfsd4op_func)(struct svc_rqst *, struct nfsd4_compound_state *,
1444 void *);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001445typedef u32(*nfsd4op_rsize)(struct svc_rqst *, struct nfsd4_op *op);
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001446typedef void(*stateid_setter)(struct nfsd4_compound_state *, void *);
1447typedef void(*stateid_getter)(struct nfsd4_compound_state *, void *);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001448
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001449enum nfsd4_op_flags {
1450 ALLOWED_WITHOUT_FH = 1 << 0, /* No current filehandle required */
Mi Jinlong5ece3ca2011-02-18 09:08:31 +08001451 ALLOWED_ON_ABSENT_FS = 1 << 1, /* ops processed on absent fs */
1452 ALLOWED_AS_FIRST_OP = 1 << 2, /* ops reqired first in compound */
J. Bruce Fields68d93182011-04-08 17:00:50 -04001453 /* For rfc 5661 section 2.6.3.1.1: */
1454 OP_HANDLES_WRONGSEC = 1 << 3,
1455 OP_IS_PUTFH_LIKE = 1 << 4,
J. Bruce Fields10910062011-01-24 12:11:02 -05001456 /*
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001457 * These are the ops whose result size we estimate before
1458 * encoding, to avoid performing an op then not being able to
1459 * respond or cache a response. This includes writes and setattrs
1460 * as well as the operations usually called "nonidempotent":
1461 */
1462 OP_MODIFIES_SOMETHING = 1 << 5,
1463 /*
1464 * Cache compounds containing these ops in the xid-based drc:
J. Bruce Fields10910062011-01-24 12:11:02 -05001465 * We use the DRC for compounds containing non-idempotent
1466 * operations, *except* those that are 4.1-specific (since
1467 * sessions provide their own EOS), and except for stateful
1468 * operations other than setclientid and setclientid_confirm
1469 * (since sequence numbers provide EOS for open, lock, etc in
1470 * the v4.0 case).
1471 */
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001472 OP_CACHEME = 1 << 6,
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001473 /*
1474 * These are ops which clear current state id.
1475 */
1476 OP_CLEAR_STATEID = 1 << 7,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001477};
1478
1479struct nfsd4_operation {
1480 nfsd4op_func op_func;
1481 u32 op_flags;
1482 char *op_name;
Mi Jinlong58e7b332011-08-28 18:18:56 +08001483 /* Try to get response size before operation */
1484 nfsd4op_rsize op_rsize_bop;
Bryan Schumaker24ff99c2012-08-14 15:55:08 -04001485 stateid_getter op_get_currentstateid;
1486 stateid_setter op_set_currentstateid;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001487};
1488
1489static struct nfsd4_operation nfsd4_ops[];
1490
Adrian Bunkf1c7f792008-08-08 19:26:42 +03001491static const char *nfsd4_op_name(unsigned opnum);
Benny Halevyb001a1b2008-07-02 11:15:03 +03001492
Linus Torvalds1da177e2005-04-16 15:20:36 -07001493/*
J. Bruce Fields57716352010-04-21 12:27:19 -04001494 * Enforce NFSv4.1 COMPOUND ordering rules:
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001495 *
J. Bruce Fields57716352010-04-21 12:27:19 -04001496 * Also note, enforced elsewhere:
1497 * - SEQUENCE other than as first op results in
1498 * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().)
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04001499 * - BIND_CONN_TO_SESSION must be the only op in its compound.
1500 * (Enforced in nfsd4_bind_conn_to_session().)
J. Bruce Fields57716352010-04-21 12:27:19 -04001501 * - DESTROY_SESSION must be the final operation in a compound, if
1502 * sessionid's in SEQUENCE and DESTROY_SESSION are the same.
1503 * (Enforced in nfsd4_destroy_session().)
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001504 */
J. Bruce Fields57716352010-04-21 12:27:19 -04001505static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args)
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001506{
J. Bruce Fields57716352010-04-21 12:27:19 -04001507 struct nfsd4_op *op = &args->ops[0];
1508
1509 /* These ordering requirements don't apply to NFSv4.0: */
1510 if (args->minorversion == 0)
1511 return nfs_ok;
1512 /* This is weird, but OK, not our problem: */
1513 if (args->opcnt == 0)
1514 return nfs_ok;
1515 if (op->status == nfserr_op_illegal)
1516 return nfs_ok;
1517 if (!(nfsd4_ops[op->opnum].op_flags & ALLOWED_AS_FIRST_OP))
1518 return nfserr_op_not_in_session;
1519 if (op->opnum == OP_SEQUENCE)
1520 return nfs_ok;
1521 if (args->opcnt != 1)
1522 return nfserr_not_only_op;
1523 return nfs_ok;
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001524}
1525
J. Bruce Fields22b03212011-04-09 11:23:24 -04001526static inline struct nfsd4_operation *OPDESC(struct nfsd4_op *op)
1527{
1528 return &nfsd4_ops[op->opnum];
1529}
1530
J. Bruce Fields10910062011-01-24 12:11:02 -05001531bool nfsd4_cache_this_op(struct nfsd4_op *op)
1532{
J. Bruce Fieldse372ba62014-05-19 12:27:11 -04001533 if (op->opnum == OP_ILLEGAL)
1534 return false;
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04001535 return OPDESC(op)->op_flags & OP_CACHEME;
J. Bruce Fields10910062011-01-24 12:11:02 -05001536}
1537
J. Bruce Fields68d93182011-04-08 17:00:50 -04001538static bool need_wrongsec_check(struct svc_rqst *rqstp)
1539{
1540 struct nfsd4_compoundres *resp = rqstp->rq_resp;
1541 struct nfsd4_compoundargs *argp = rqstp->rq_argp;
1542 struct nfsd4_op *this = &argp->ops[resp->opcnt - 1];
1543 struct nfsd4_op *next = &argp->ops[resp->opcnt];
1544 struct nfsd4_operation *thisd;
1545 struct nfsd4_operation *nextd;
1546
1547 thisd = OPDESC(this);
1548 /*
1549 * Most ops check wronsec on our own; only the putfh-like ops
1550 * have special rules.
1551 */
1552 if (!(thisd->op_flags & OP_IS_PUTFH_LIKE))
1553 return false;
1554 /*
1555 * rfc 5661 2.6.3.1.1.6: don't bother erroring out a
1556 * put-filehandle operation if we're not going to use the
1557 * result:
1558 */
1559 if (argp->opcnt == resp->opcnt)
1560 return false;
J. Bruce Fields51904b02014-10-22 14:46:29 -04001561 if (next->opnum == OP_ILLEGAL)
1562 return false;
J. Bruce Fields68d93182011-04-08 17:00:50 -04001563 nextd = OPDESC(next);
1564 /*
1565 * Rest of 2.6.3.1.1: certain operations will return WRONGSEC
1566 * errors themselves as necessary; others should check for them
1567 * now:
1568 */
1569 return !(nextd->op_flags & OP_HANDLES_WRONGSEC);
1570}
1571
J. Bruce Fields2d124dfaa2014-01-15 16:26:42 -05001572static void svcxdr_init_encode(struct svc_rqst *rqstp,
1573 struct nfsd4_compoundres *resp)
1574{
1575 struct xdr_stream *xdr = &resp->xdr;
1576 struct xdr_buf *buf = &rqstp->rq_res;
1577 struct kvec *head = buf->head;
1578
1579 xdr->buf = buf;
J. Bruce Fieldsddd1ea52013-08-27 21:32:25 -04001580 xdr->iov = head;
J. Bruce Fields2d124dfaa2014-01-15 16:26:42 -05001581 xdr->p = head->iov_base + head->iov_len;
J. Bruce Fieldsa5cddc82014-05-12 18:10:58 -04001582 xdr->end = head->iov_base + PAGE_SIZE - rqstp->rq_auth_slack;
J. Bruce Fields6ac90392014-02-26 17:39:35 -05001583 /* Tail and page_len should be zero at this point: */
1584 buf->len = buf->head[0].iov_len;
J. Bruce Fields2825a7f2013-08-26 16:04:46 -04001585 xdr->scratch.iov_len = 0;
J. Bruce Fields05638dc2014-06-02 12:05:47 -04001586 xdr->page_ptr = buf->pages - 1;
J. Bruce Fields2825a7f2013-08-26 16:04:46 -04001587 buf->buflen = PAGE_SIZE * (1 + rqstp->rq_page_end - buf->pages)
J. Bruce Fieldsa5cddc82014-05-12 18:10:58 -04001588 - rqstp->rq_auth_slack;
J. Bruce Fields2d124dfaa2014-01-15 16:26:42 -05001589}
1590
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001591/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001592 * COMPOUND call.
1593 */
Al Viro7111c662006-10-19 23:28:45 -07001594static __be32
Linus Torvalds1da177e2005-04-16 15:20:36 -07001595nfsd4_proc_compound(struct svc_rqst *rqstp,
1596 struct nfsd4_compoundargs *args,
1597 struct nfsd4_compoundres *resp)
1598{
1599 struct nfsd4_op *op;
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001600 struct nfsd4_operation *opdesc;
Andy Adamsone354d572009-03-28 11:30:52 +03001601 struct nfsd4_compound_state *cstate = &resp->cstate;
Kinglong Mee4daeed22014-03-26 17:10:37 +08001602 struct svc_fh *current_fh = &cstate->current_fh;
1603 struct svc_fh *save_fh = &cstate->save_fh;
Al Virob37ad282006-10-19 23:28:59 -07001604 __be32 status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001605
J. Bruce Fields2d124dfaa2014-01-15 16:26:42 -05001606 svcxdr_init_encode(rqstp, resp);
J. Bruce Fields4aea24b2014-01-15 15:17:58 -05001607 resp->tagp = resp->xdr.p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001608 /* reserve space for: taglen, tag, and opcnt */
J. Bruce Fieldsd3f627c2014-02-26 17:00:38 -05001609 xdr_reserve_space(&resp->xdr, 8 + args->taglen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001610 resp->taglen = args->taglen;
1611 resp->tag = args->tag;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001612 resp->rqstp = rqstp;
Kinglong Mee4daeed22014-03-26 17:10:37 +08001613 cstate->minorversion = args->minorversion;
Kinglong Mee4daeed22014-03-26 17:10:37 +08001614 fh_init(current_fh, NFS4_FHSIZE);
1615 fh_init(save_fh, NFS4_FHSIZE);
NeilBrown8ff30fa2010-08-12 17:04:07 +10001616 /*
1617 * Don't use the deferral mechanism for NFSv4; compounds make it
1618 * too hard to avoid non-idempotency problems.
1619 */
Jeff Layton30660e04b2014-11-19 07:51:16 -05001620 clear_bit(RQ_USEDEFERRAL, &rqstp->rq_flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001621
1622 /*
1623 * According to RFC3010, this takes precedence over all other errors.
1624 */
1625 status = nfserr_minor_vers_mismatch;
J. Bruce Fields35f7a142013-07-08 19:51:44 -04001626 if (nfsd_minorversion(args->minorversion, NFSD_TEST) <= 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001627 goto out;
1628
J. Bruce Fields57716352010-04-21 12:27:19 -04001629 status = nfs41_check_op_ordering(args);
1630 if (status) {
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001631 op = &args->ops[0];
J. Bruce Fields57716352010-04-21 12:27:19 -04001632 op->status = status;
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03001633 goto encode_op;
1634 }
1635
Linus Torvalds1da177e2005-04-16 15:20:36 -07001636 while (!status && resp->opcnt < args->opcnt) {
1637 op = &args->ops[resp->opcnt++];
1638
Benny Halevyb001a1b2008-07-02 11:15:03 +03001639 dprintk("nfsv4 compound op #%d/%d: %d (%s)\n",
1640 resp->opcnt, args->opcnt, op->opnum,
1641 nfsd4_op_name(op->opnum));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001642 /*
1643 * The XDR decode routines may have pre-set op->status;
1644 * for example, if there is a miscellaneous XDR error
1645 * it will be set to nfserr_bad_xdr.
1646 */
J. Bruce Fields9d313b12013-02-28 12:51:49 -08001647 if (op->status) {
1648 if (op->opnum == OP_OPEN)
1649 op->status = nfsd4_open_omfg(rqstp, cstate, op);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001650 goto encode_op;
J. Bruce Fields9d313b12013-02-28 12:51:49 -08001651 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001652
J. Bruce Fields22b03212011-04-09 11:23:24 -04001653 opdesc = OPDESC(op);
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001654
Kinglong Mee4daeed22014-03-26 17:10:37 +08001655 if (!current_fh->fh_dentry) {
J.Bruce Fields27d630e2006-12-13 00:35:43 -08001656 if (!(opdesc->op_flags & ALLOWED_WITHOUT_FH)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -07001657 op->status = nfserr_nofilehandle;
1658 goto encode_op;
1659 }
Kinglong Mee4daeed22014-03-26 17:10:37 +08001660 } else if (current_fh->fh_export->ex_fslocs.migrated &&
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001661 !(opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) {
J.Bruce Fields42ca0992006-10-04 02:16:20 -07001662 op->status = nfserr_moved;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001663 goto encode_op;
1664 }
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001665
Kinglong Mee23367452014-03-29 10:23:47 +08001666 fh_clear_wcc(current_fh);
1667
Mi Jinlong58e7b332011-08-28 18:18:56 +08001668 /* If op is non-idempotent */
1669 if (opdesc->op_flags & OP_MODIFIES_SOMETHING) {
J. Bruce Fields4c69d582014-01-28 16:01:04 -05001670 /*
J. Bruce Fieldsa8095f72014-03-11 17:54:34 -04001671 * Don't execute this op if we couldn't encode a
1672 * succesful reply:
1673 */
1674 u32 plen = opdesc->op_rsize_bop(rqstp, op);
1675 /*
1676 * Plus if there's another operation, make sure
J. Bruce Fields4c69d582014-01-28 16:01:04 -05001677 * we'll have space to at least encode an error:
1678 */
1679 if (resp->opcnt < args->opcnt)
1680 plen += COMPOUND_ERR_SLACK_SPACE;
Mi Jinlong58e7b332011-08-28 18:18:56 +08001681 op->status = nfsd4_check_resp_size(resp, plen);
1682 }
1683
1684 if (op->status)
1685 goto encode_op;
1686
J. Bruce Fieldsb600de72013-02-28 11:55:46 -08001687 if (opdesc->op_get_currentstateid)
1688 opdesc->op_get_currentstateid(cstate, &op->u);
1689 op->status = opdesc->op_func(rqstp, cstate, &op->u);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001690
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001691 if (!op->status) {
1692 if (opdesc->op_set_currentstateid)
1693 opdesc->op_set_currentstateid(cstate, &op->u);
1694
1695 if (opdesc->op_flags & OP_CLEAR_STATEID)
Tigran Mkrtchyan37c593c2012-02-13 22:55:32 +01001696 clear_current_stateid(cstate);
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001697
1698 if (need_wrongsec_check(rqstp))
Kinglong Mee4daeed22014-03-26 17:10:37 +08001699 op->status = check_nfsd_access(current_fh->fh_export, rqstp);
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001700 }
J. Bruce Fields68d93182011-04-08 17:00:50 -04001701
Linus Torvalds1da177e2005-04-16 15:20:36 -07001702encode_op:
Andy Adamson49557cc2009-07-23 19:02:16 -04001703 /* Only from SEQUENCE */
Kinglong Mee4daeed22014-03-26 17:10:37 +08001704 if (cstate->status == nfserr_replay_cache) {
Andy Adamsonda3846a2009-04-03 08:28:22 +03001705 dprintk("%s NFS4.1 replay from cache\n", __func__);
Andy Adamsonabfabf82009-07-23 19:02:18 -04001706 status = op->status;
Andy Adamsonda3846a2009-04-03 08:28:22 +03001707 goto out;
1708 }
Al Viroa90b0612006-10-19 23:29:03 -07001709 if (op->status == nfserr_replay_me) {
J.Bruce Fieldsa4f1706a92006-12-13 00:35:28 -08001710 op->replay = &cstate->replay_owner->so_replay;
J. Bruce Fieldsd0a381d2014-01-30 17:18:38 -05001711 nfsd4_encode_replay(&resp->xdr, op);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001712 status = op->status = op->replay->rp_status;
1713 } else {
1714 nfsd4_encode_operation(resp, op);
1715 status = op->status;
1716 }
Benny Halevy04077172008-12-15 19:40:49 +02001717
1718 dprintk("nfsv4 compound op %p opcnt %d #%d: %d: status %d\n",
1719 args->ops, args->opcnt, resp->opcnt, op->opnum,
1720 be32_to_cpu(status));
1721
Jeff Layton58fb12e2014-07-29 21:34:27 -04001722 nfsd4_cstate_clear_replay(cstate);
NeilBrown7e06b7f2005-06-23 22:03:13 -07001723 /* XXX Ugh, we need to get rid of this kind of special case: */
1724 if (op->opnum == OP_READ && op->u.read.rd_filp)
1725 fput(op->u.read.rd_filp);
Shankar Anande2b20952006-07-10 04:45:44 -07001726
1727 nfsd4_increment_op_stats(op->opnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001728 }
1729
Kinglong Mee4daeed22014-03-26 17:10:37 +08001730 cstate->status = status;
1731 fh_put(current_fh);
1732 fh_put(save_fh);
1733 BUG_ON(cstate->replay_owner);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001734out:
Andy Adamson2f425872009-04-03 08:27:32 +03001735 /* Reset deferral mechanism for RPC deferrals */
Jeff Layton30660e04b2014-11-19 07:51:16 -05001736 set_bit(RQ_USEDEFERRAL, &rqstp->rq_flags);
J. Bruce Fields3b12cd92008-05-05 17:17:44 -04001737 dprintk("nfsv4 compound returned %d\n", ntohl(status));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001738 return status;
1739}
1740
Mi Jinlong58e7b332011-08-28 18:18:56 +08001741#define op_encode_hdr_size (2)
1742#define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
1743#define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
1744#define op_encode_change_info_maxsz (5)
1745#define nfs4_fattr_bitmap_maxsz (4)
1746
J. Bruce Fields8c7424c2014-03-10 12:19:10 -04001747/* We'll fall back on returning no lockowner if run out of space: */
1748#define op_encode_lockowner_maxsz (0)
Mi Jinlong58e7b332011-08-28 18:18:56 +08001749#define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz)
1750
1751#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1752
1753#define op_encode_ace_maxsz (3 + nfs4_owner_maxsz)
1754#define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \
1755 op_encode_ace_maxsz)
1756
1757#define op_encode_channel_attrs_maxsz (6 + 1 + 1)
1758
1759static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1760{
1761 return (op_encode_hdr_size) * sizeof(__be32);
1762}
1763
1764static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1765{
1766 return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32);
1767}
1768
1769static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1770{
1771 return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32);
1772}
1773
1774static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1775{
1776 return (op_encode_hdr_size + op_encode_change_info_maxsz
1777 + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1778}
1779
J. Bruce Fieldsb86cef62014-03-23 12:01:48 -04001780/*
1781 * Note since this is an idempotent operation we won't insist on failing
1782 * the op prematurely if the estimate is too large. We may turn off splice
1783 * reads unnecessarily.
1784 */
1785static inline u32 nfsd4_getattr_rsize(struct svc_rqst *rqstp,
1786 struct nfsd4_op *op)
1787{
1788 u32 *bmap = op->u.getattr.ga_bmval;
1789 u32 bmap0 = bmap[0], bmap1 = bmap[1], bmap2 = bmap[2];
1790 u32 ret = 0;
1791
1792 if (bmap0 & FATTR4_WORD0_ACL)
1793 return svc_max_payload(rqstp);
1794 if (bmap0 & FATTR4_WORD0_FS_LOCATIONS)
1795 return svc_max_payload(rqstp);
1796
1797 if (bmap1 & FATTR4_WORD1_OWNER) {
1798 ret += IDMAP_NAMESZ + 4;
1799 bmap1 &= ~FATTR4_WORD1_OWNER;
1800 }
1801 if (bmap1 & FATTR4_WORD1_OWNER_GROUP) {
1802 ret += IDMAP_NAMESZ + 4;
1803 bmap1 &= ~FATTR4_WORD1_OWNER_GROUP;
1804 }
1805 if (bmap0 & FATTR4_WORD0_FILEHANDLE) {
1806 ret += NFS4_FHSIZE + 4;
1807 bmap0 &= ~FATTR4_WORD0_FILEHANDLE;
1808 }
1809 if (bmap2 & FATTR4_WORD2_SECURITY_LABEL) {
1810 ret += NFSD4_MAX_SEC_LABEL_LEN + 12;
1811 bmap2 &= ~FATTR4_WORD2_SECURITY_LABEL;
1812 }
1813 /*
1814 * Largest of remaining attributes are 16 bytes (e.g.,
1815 * supported_attributes)
1816 */
1817 ret += 16 * (hweight32(bmap0) + hweight32(bmap1) + hweight32(bmap2));
1818 /* bitmask, length */
1819 ret += 20;
1820 return ret;
1821}
1822
Mi Jinlong58e7b332011-08-28 18:18:56 +08001823static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1824{
1825 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1826 * sizeof(__be32);
1827}
1828
1829static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1830{
1831 return (op_encode_hdr_size + op_encode_lock_denied_maxsz)
1832 * sizeof(__be32);
1833}
1834
1835static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1836{
1837 return (op_encode_hdr_size + op_encode_stateid_maxsz
1838 + op_encode_change_info_maxsz + 1
1839 + nfs4_fattr_bitmap_maxsz
1840 + op_encode_delegation_maxsz) * sizeof(__be32);
1841}
1842
1843static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1844{
1845 u32 maxcount = 0, rlen = 0;
1846
1847 maxcount = svc_max_payload(rqstp);
Kinglong Mee3c7aa152014-06-10 18:08:19 +08001848 rlen = min(op->u.read.rd_length, maxcount);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001849
J. Bruce Fields622f5602014-05-16 14:38:20 -04001850 return (op_encode_hdr_size + 2 + XDR_QUADLEN(rlen)) * sizeof(__be32);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001851}
1852
1853static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1854{
Kinglong Mee3c7aa152014-06-10 18:08:19 +08001855 u32 maxcount = 0, rlen = 0;
Mi Jinlong58e7b332011-08-28 18:18:56 +08001856
Kinglong Mee3c7aa152014-06-10 18:08:19 +08001857 maxcount = svc_max_payload(rqstp);
1858 rlen = min(op->u.readdir.rd_maxcount, maxcount);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001859
J. Bruce Fields561f0ed2014-01-20 16:37:11 -05001860 return (op_encode_hdr_size + op_encode_verifier_maxsz +
1861 XDR_QUADLEN(rlen)) * sizeof(__be32);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001862}
1863
1864static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1865{
1866 return (op_encode_hdr_size + op_encode_change_info_maxsz)
1867 * sizeof(__be32);
1868}
1869
1870static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1871{
1872 return (op_encode_hdr_size + op_encode_change_info_maxsz
1873 + op_encode_change_info_maxsz) * sizeof(__be32);
1874}
1875
J. Bruce Fieldsccae70a2014-03-23 09:34:22 -07001876static inline u32 nfsd4_sequence_rsize(struct svc_rqst *rqstp,
1877 struct nfsd4_op *op)
1878{
J. Bruce Fieldsd1d84c92014-08-21 15:04:31 -04001879 return (op_encode_hdr_size
1880 + XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) * sizeof(__be32);
J. Bruce Fieldsccae70a2014-03-23 09:34:22 -07001881}
1882
Mi Jinlong58e7b332011-08-28 18:18:56 +08001883static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1884{
1885 return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32);
1886}
1887
1888static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1889{
J. Bruce Fields480efae2014-03-10 14:17:55 -04001890 return (op_encode_hdr_size + 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE)) *
1891 sizeof(__be32);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001892}
1893
1894static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1895{
J. Bruce Fieldsf34e4322014-05-16 21:24:56 -04001896 return (op_encode_hdr_size + 2 + op_encode_verifier_maxsz) * sizeof(__be32);
Mi Jinlong58e7b332011-08-28 18:18:56 +08001897}
1898
1899static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1900{
1901 return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\
Kinglong Meea8bb84b2013-12-10 15:24:36 +08001902 1 + 1 + /* eir_flags, spr_how */\
1903 4 + /* spo_must_enforce & _allow with bitmap */\
Mi Jinlong58e7b332011-08-28 18:18:56 +08001904 2 + /*eir_server_owner.so_minor_id */\
1905 /* eir_server_owner.so_major_id<> */\
1906 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1907 /* eir_server_scope<> */\
1908 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\
1909 1 + /* eir_server_impl_id array length */\
1910 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32);
1911}
1912
1913static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1914{
1915 return (op_encode_hdr_size + \
1916 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\
1917 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32);
1918}
1919
1920static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1921{
1922 return (op_encode_hdr_size + \
1923 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\
1924 2 + /* csr_sequence, csr_flags */\
1925 op_encode_channel_attrs_maxsz + \
1926 op_encode_channel_attrs_maxsz) * sizeof(__be32);
1927}
1928
Christoph Hellwig9cf514c2014-05-05 13:11:59 +02001929#ifdef CONFIG_NFSD_PNFS
1930/*
1931 * At this stage we don't really know what layout driver will handle the request,
1932 * so we need to define an arbitrary upper bound here.
1933 */
1934#define MAX_LAYOUT_SIZE 128
1935static inline u32 nfsd4_layoutget_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1936{
1937 return (op_encode_hdr_size +
1938 1 /* logr_return_on_close */ +
1939 op_encode_stateid_maxsz +
1940 1 /* nr of layouts */ +
1941 MAX_LAYOUT_SIZE) * sizeof(__be32);
1942}
1943
1944static inline u32 nfsd4_layoutcommit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1945{
1946 return (op_encode_hdr_size +
1947 1 /* locr_newsize */ +
1948 2 /* ns_size */) * sizeof(__be32);
1949}
1950
1951static inline u32 nfsd4_layoutreturn_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op)
1952{
1953 return (op_encode_hdr_size +
1954 1 /* lrs_stateid */ +
1955 op_encode_stateid_maxsz) * sizeof(__be32);
1956}
1957#endif /* CONFIG_NFSD_PNFS */
1958
Benny Halevy20766012009-03-28 11:32:05 +03001959static struct nfsd4_operation nfsd4_ops[] = {
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001960 [OP_ACCESS] = {
1961 .op_func = (nfsd4op_func)nfsd4_access,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001962 .op_name = "OP_ACCESS",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001963 },
1964 [OP_CLOSE] = {
1965 .op_func = (nfsd4op_func)nfsd4_close,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001966 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001967 .op_name = "OP_CLOSE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001968 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01001969 .op_get_currentstateid = (stateid_getter)nfsd4_get_closestateid,
1970 .op_set_currentstateid = (stateid_setter)nfsd4_set_closestateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001971 },
1972 [OP_COMMIT] = {
1973 .op_func = (nfsd4op_func)nfsd4_commit,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001974 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001975 .op_name = "OP_COMMIT",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001976 .op_rsize_bop = (nfsd4op_rsize)nfsd4_commit_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001977 },
1978 [OP_CREATE] = {
1979 .op_func = (nfsd4op_func)nfsd4_create,
Tigran Mkrtchyand1471052012-02-13 22:55:29 +01001980 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001981 .op_name = "OP_CREATE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001982 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001983 },
1984 [OP_DELEGRETURN] = {
1985 .op_func = (nfsd4op_func)nfsd4_delegreturn,
Mi Jinlong58e7b332011-08-28 18:18:56 +08001986 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001987 .op_name = "OP_DELEGRETURN",
Mi Jinlong58e7b332011-08-28 18:18:56 +08001988 .op_rsize_bop = nfsd4_only_status_rsize,
Tigran Mkrtchyan9428fe12012-02-13 22:55:31 +01001989 .op_get_currentstateid = (stateid_getter)nfsd4_get_delegreturnstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001990 },
1991 [OP_GETATTR] = {
1992 .op_func = (nfsd4op_func)nfsd4_getattr,
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08001993 .op_flags = ALLOWED_ON_ABSENT_FS,
J. Bruce Fieldsb86cef62014-03-23 12:01:48 -04001994 .op_rsize_bop = nfsd4_getattr_rsize,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001995 .op_name = "OP_GETATTR",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08001996 },
1997 [OP_GETFH] = {
1998 .op_func = (nfsd4op_func)nfsd4_getfh,
Benny Halevyb001a1b2008-07-02 11:15:03 +03001999 .op_name = "OP_GETFH",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002000 },
2001 [OP_LINK] = {
2002 .op_func = (nfsd4op_func)nfsd4_link,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04002003 .op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING
2004 | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002005 .op_name = "OP_LINK",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002006 .op_rsize_bop = (nfsd4op_rsize)nfsd4_link_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002007 },
2008 [OP_LOCK] = {
2009 .op_func = (nfsd4op_func)nfsd4_lock,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002010 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002011 .op_name = "OP_LOCK",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002012 .op_rsize_bop = (nfsd4op_rsize)nfsd4_lock_rsize,
Tigran Mkrtchyan62cd4a52012-02-13 22:55:25 +01002013 .op_set_currentstateid = (stateid_setter)nfsd4_set_lockstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002014 },
2015 [OP_LOCKT] = {
2016 .op_func = (nfsd4op_func)nfsd4_lockt,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002017 .op_name = "OP_LOCKT",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002018 },
2019 [OP_LOCKU] = {
2020 .op_func = (nfsd4op_func)nfsd4_locku,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002021 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002022 .op_name = "OP_LOCKU",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002023 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
Tigran Mkrtchyan62cd4a52012-02-13 22:55:25 +01002024 .op_get_currentstateid = (stateid_getter)nfsd4_get_lockustateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002025 },
2026 [OP_LOOKUP] = {
2027 .op_func = (nfsd4op_func)nfsd4_lookup,
Tigran Mkrtchyand1471052012-02-13 22:55:29 +01002028 .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002029 .op_name = "OP_LOOKUP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002030 },
2031 [OP_LOOKUPP] = {
2032 .op_func = (nfsd4op_func)nfsd4_lookupp,
Tigran Mkrtchyand1471052012-02-13 22:55:29 +01002033 .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002034 .op_name = "OP_LOOKUPP",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002035 },
2036 [OP_NVERIFY] = {
2037 .op_func = (nfsd4op_func)nfsd4_nverify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002038 .op_name = "OP_NVERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002039 },
2040 [OP_OPEN] = {
2041 .op_func = (nfsd4op_func)nfsd4_open,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002042 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002043 .op_name = "OP_OPEN",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002044 .op_rsize_bop = (nfsd4op_rsize)nfsd4_open_rsize,
Tigran Mkrtchyan8b704842012-02-13 22:55:24 +01002045 .op_set_currentstateid = (stateid_setter)nfsd4_set_openstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002046 },
2047 [OP_OPEN_CONFIRM] = {
2048 .op_func = (nfsd4op_func)nfsd4_open_confirm,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002049 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002050 .op_name = "OP_OPEN_CONFIRM",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002051 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002052 },
2053 [OP_OPEN_DOWNGRADE] = {
2054 .op_func = (nfsd4op_func)nfsd4_open_downgrade,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002055 .op_flags = OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002056 .op_name = "OP_OPEN_DOWNGRADE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002057 .op_rsize_bop = (nfsd4op_rsize)nfsd4_status_stateid_rsize,
Tigran Mkrtchyan9428fe12012-02-13 22:55:31 +01002058 .op_get_currentstateid = (stateid_getter)nfsd4_get_opendowngradestateid,
2059 .op_set_currentstateid = (stateid_setter)nfsd4_set_opendowngradestateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002060 },
2061 [OP_PUTFH] = {
2062 .op_func = (nfsd4op_func)nfsd4_putfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04002063 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
J. Bruce Fields5b648692014-03-07 11:43:58 -05002064 | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002065 .op_name = "OP_PUTFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002066 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002067 },
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08002068 [OP_PUTPUBFH] = {
J. Bruce Fieldsa1c8c4d2009-03-09 12:17:29 -04002069 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04002070 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
J. Bruce Fields5b648692014-03-07 11:43:58 -05002071 | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002072 .op_name = "OP_PUTPUBFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002073 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldseeac2942006-12-13 00:35:39 -08002074 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002075 [OP_PUTROOTFH] = {
2076 .op_func = (nfsd4op_func)nfsd4_putrootfh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04002077 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
J. Bruce Fields5b648692014-03-07 11:43:58 -05002078 | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002079 .op_name = "OP_PUTROOTFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002080 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002081 },
2082 [OP_READ] = {
2083 .op_func = (nfsd4op_func)nfsd4_read,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002084 .op_name = "OP_READ",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002085 .op_rsize_bop = (nfsd4op_rsize)nfsd4_read_rsize,
Tigran Mkrtchyan30813e22012-02-13 22:55:26 +01002086 .op_get_currentstateid = (stateid_getter)nfsd4_get_readstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002087 },
2088 [OP_READDIR] = {
2089 .op_func = (nfsd4op_func)nfsd4_readdir,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002090 .op_name = "OP_READDIR",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002091 .op_rsize_bop = (nfsd4op_rsize)nfsd4_readdir_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002092 },
2093 [OP_READLINK] = {
2094 .op_func = (nfsd4op_func)nfsd4_readlink,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002095 .op_name = "OP_READLINK",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002096 },
2097 [OP_REMOVE] = {
2098 .op_func = (nfsd4op_func)nfsd4_remove,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04002099 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002100 .op_name = "OP_REMOVE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002101 .op_rsize_bop = (nfsd4op_rsize)nfsd4_remove_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002102 },
2103 [OP_RENAME] = {
2104 .op_func = (nfsd4op_func)nfsd4_rename,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04002105 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002106 .op_name = "OP_RENAME",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002107 .op_rsize_bop = (nfsd4op_rsize)nfsd4_rename_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002108 },
2109 [OP_RENEW] = {
2110 .op_func = (nfsd4op_func)nfsd4_renew,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002111 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
2112 | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002113 .op_name = "OP_RENEW",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002114 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
2115
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002116 },
2117 [OP_RESTOREFH] = {
2118 .op_func = (nfsd4op_func)nfsd4_restorefh,
J. Bruce Fields68d93182011-04-08 17:00:50 -04002119 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
Mi Jinlong58e7b332011-08-28 18:18:56 +08002120 | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002121 .op_name = "OP_RESTOREFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002122 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002123 },
2124 [OP_SAVEFH] = {
2125 .op_func = (nfsd4op_func)nfsd4_savefh,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002126 .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002127 .op_name = "OP_SAVEFH",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002128 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002129 },
Andy Adamsondcb488a32007-07-17 04:04:51 -07002130 [OP_SECINFO] = {
2131 .op_func = (nfsd4op_func)nfsd4_secinfo,
J. Bruce Fields68d93182011-04-08 17:00:50 -04002132 .op_flags = OP_HANDLES_WRONGSEC,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002133 .op_name = "OP_SECINFO",
Andy Adamsondcb488a32007-07-17 04:04:51 -07002134 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002135 [OP_SETATTR] = {
2136 .op_func = (nfsd4op_func)nfsd4_setattr,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002137 .op_name = "OP_SETATTR",
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04002138 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002139 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setattr_rsize,
Tigran Mkrtchyan1e97b512012-02-13 22:55:30 +01002140 .op_get_currentstateid = (stateid_getter)nfsd4_get_setattrstateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002141 },
2142 [OP_SETCLIENTID] = {
2143 .op_func = (nfsd4op_func)nfsd4_setclientid,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002144 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04002145 | OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002146 .op_name = "OP_SETCLIENTID",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002147 .op_rsize_bop = (nfsd4op_rsize)nfsd4_setclientid_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002148 },
2149 [OP_SETCLIENTID_CONFIRM] = {
2150 .op_func = (nfsd4op_func)nfsd4_setclientid_confirm,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002151 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04002152 | OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002153 .op_name = "OP_SETCLIENTID_CONFIRM",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002154 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002155 },
2156 [OP_VERIFY] = {
2157 .op_func = (nfsd4op_func)nfsd4_verify,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002158 .op_name = "OP_VERIFY",
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002159 },
2160 [OP_WRITE] = {
2161 .op_func = (nfsd4op_func)nfsd4_write,
J. Bruce Fieldsc8566942011-09-20 08:49:51 -04002162 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002163 .op_name = "OP_WRITE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002164 .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
Tigran Mkrtchyan30813e22012-02-13 22:55:26 +01002165 .op_get_currentstateid = (stateid_getter)nfsd4_get_writestateid,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002166 },
2167 [OP_RELEASE_LOCKOWNER] = {
2168 .op_func = (nfsd4op_func)nfsd4_release_lockowner,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002169 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS
2170 | OP_MODIFIES_SOMETHING,
Benny Halevyb001a1b2008-07-02 11:15:03 +03002171 .op_name = "OP_RELEASE_LOCKOWNER",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002172 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002173 },
Andy Adamson069b6ad2009-04-03 08:27:58 +03002174
2175 /* NFSv4.1 operations */
2176 [OP_EXCHANGE_ID] = {
2177 .op_func = (nfsd4op_func)nfsd4_exchange_id,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002178 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
2179 | OP_MODIFIES_SOMETHING,
Andy Adamson069b6ad2009-04-03 08:27:58 +03002180 .op_name = "OP_EXCHANGE_ID",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002181 .op_rsize_bop = (nfsd4op_rsize)nfsd4_exchange_id_rsize,
Andy Adamson069b6ad2009-04-03 08:27:58 +03002182 },
J. Bruce Fieldscb73a9f2012-11-01 18:09:48 -04002183 [OP_BACKCHANNEL_CTL] = {
2184 .op_func = (nfsd4op_func)nfsd4_backchannel_ctl,
2185 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
2186 .op_name = "OP_BACKCHANNEL_CTL",
2187 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
2188 },
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04002189 [OP_BIND_CONN_TO_SESSION] = {
2190 .op_func = (nfsd4op_func)nfsd4_bind_conn_to_session,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002191 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
2192 | OP_MODIFIES_SOMETHING,
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04002193 .op_name = "OP_BIND_CONN_TO_SESSION",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002194 .op_rsize_bop = (nfsd4op_rsize)nfsd4_bind_conn_to_session_rsize,
J. Bruce Fields1d1bc8f2010-10-04 23:12:59 -04002195 },
Andy Adamson069b6ad2009-04-03 08:27:58 +03002196 [OP_CREATE_SESSION] = {
2197 .op_func = (nfsd4op_func)nfsd4_create_session,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002198 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
2199 | OP_MODIFIES_SOMETHING,
Andy Adamson069b6ad2009-04-03 08:27:58 +03002200 .op_name = "OP_CREATE_SESSION",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002201 .op_rsize_bop = (nfsd4op_rsize)nfsd4_create_session_rsize,
Andy Adamson069b6ad2009-04-03 08:27:58 +03002202 },
2203 [OP_DESTROY_SESSION] = {
2204 .op_func = (nfsd4op_func)nfsd4_destroy_session,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002205 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
2206 | OP_MODIFIES_SOMETHING,
Andy Adamson069b6ad2009-04-03 08:27:58 +03002207 .op_name = "OP_DESTROY_SESSION",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002208 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
Andy Adamson069b6ad2009-04-03 08:27:58 +03002209 },
2210 [OP_SEQUENCE] = {
2211 .op_func = (nfsd4op_func)nfsd4_sequence,
Andy Adamsonf9bb94c2009-04-03 08:28:12 +03002212 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP,
Andy Adamson069b6ad2009-04-03 08:27:58 +03002213 .op_name = "OP_SEQUENCE",
J. Bruce Fieldsd1d84c92014-08-21 15:04:31 -04002214 .op_rsize_bop = (nfsd4op_rsize)nfsd4_sequence_rsize,
Andy Adamson069b6ad2009-04-03 08:27:58 +03002215 },
Benny Halevy094b5d72011-06-16 11:39:10 -04002216 [OP_DESTROY_CLIENTID] = {
Mi Jinlong345c2842011-10-20 17:51:39 +08002217 .op_func = (nfsd4op_func)nfsd4_destroy_clientid,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002218 .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP
2219 | OP_MODIFIES_SOMETHING,
Benny Halevy094b5d72011-06-16 11:39:10 -04002220 .op_name = "OP_DESTROY_CLIENTID",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002221 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
Benny Halevy094b5d72011-06-16 11:39:10 -04002222 },
J. Bruce Fields4dc6ec02010-04-19 15:11:28 -04002223 [OP_RECLAIM_COMPLETE] = {
2224 .op_func = (nfsd4op_func)nfsd4_reclaim_complete,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002225 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
J. Bruce Fields4dc6ec02010-04-19 15:11:28 -04002226 .op_name = "OP_RECLAIM_COMPLETE",
Mi Jinlong58e7b332011-08-28 18:18:56 +08002227 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
J. Bruce Fields4dc6ec02010-04-19 15:11:28 -04002228 },
J. Bruce Fields04f4ad12010-12-16 09:51:13 -05002229 [OP_SECINFO_NO_NAME] = {
2230 .op_func = (nfsd4op_func)nfsd4_secinfo_no_name,
J. Bruce Fields68d93182011-04-08 17:00:50 -04002231 .op_flags = OP_HANDLES_WRONGSEC,
J. Bruce Fields04f4ad12010-12-16 09:51:13 -05002232 .op_name = "OP_SECINFO_NO_NAME",
2233 },
Bryan Schumaker17456802011-07-13 10:50:48 -04002234 [OP_TEST_STATEID] = {
2235 .op_func = (nfsd4op_func)nfsd4_test_stateid,
2236 .op_flags = ALLOWED_WITHOUT_FH,
2237 .op_name = "OP_TEST_STATEID",
2238 },
Bryan Schumakere1ca12d2011-07-13 11:04:21 -04002239 [OP_FREE_STATEID] = {
2240 .op_func = (nfsd4op_func)nfsd4_free_stateid,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002241 .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING,
Bryan Schumakere1ca12d2011-07-13 11:04:21 -04002242 .op_name = "OP_FREE_STATEID",
J. Bruce Fieldsa1dc6952012-12-17 18:17:13 -05002243 .op_get_currentstateid = (stateid_getter)nfsd4_get_freestateid,
Mi Jinlong58e7b332011-08-28 18:18:56 +08002244 .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize,
Bryan Schumakere1ca12d2011-07-13 11:04:21 -04002245 },
Christoph Hellwig9cf514c2014-05-05 13:11:59 +02002246#ifdef CONFIG_NFSD_PNFS
2247 [OP_GETDEVICEINFO] = {
2248 .op_func = (nfsd4op_func)nfsd4_getdeviceinfo,
2249 .op_flags = ALLOWED_WITHOUT_FH,
2250 .op_name = "OP_GETDEVICEINFO",
2251 },
2252 [OP_LAYOUTGET] = {
2253 .op_func = (nfsd4op_func)nfsd4_layoutget,
2254 .op_flags = OP_MODIFIES_SOMETHING,
2255 .op_name = "OP_LAYOUTGET",
2256 .op_rsize_bop = (nfsd4op_rsize)nfsd4_layoutget_rsize,
2257 },
2258 [OP_LAYOUTCOMMIT] = {
2259 .op_func = (nfsd4op_func)nfsd4_layoutcommit,
2260 .op_flags = OP_MODIFIES_SOMETHING,
2261 .op_name = "OP_LAYOUTCOMMIT",
2262 .op_rsize_bop = (nfsd4op_rsize)nfsd4_layoutcommit_rsize,
2263 },
2264 [OP_LAYOUTRETURN] = {
2265 .op_func = (nfsd4op_func)nfsd4_layoutreturn,
2266 .op_flags = OP_MODIFIES_SOMETHING,
2267 .op_name = "OP_LAYOUTRETURN",
2268 .op_rsize_bop = (nfsd4op_rsize)nfsd4_layoutreturn_rsize,
2269 },
2270#endif /* CONFIG_NFSD_PNFS */
Anna Schumaker24bab492014-09-26 13:58:27 -04002271
2272 /* NFSv4.2 operations */
Anna Schumaker95d871f2014-11-07 14:44:26 -05002273 [OP_ALLOCATE] = {
2274 .op_func = (nfsd4op_func)nfsd4_allocate,
2275 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
2276 .op_name = "OP_ALLOCATE",
2277 .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
2278 },
Anna Schumakerb0cb9082014-11-07 14:44:27 -05002279 [OP_DEALLOCATE] = {
2280 .op_func = (nfsd4op_func)nfsd4_deallocate,
2281 .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME,
2282 .op_name = "OP_DEALLOCATE",
2283 .op_rsize_bop = (nfsd4op_rsize)nfsd4_write_rsize,
2284 },
Anna Schumaker24bab492014-09-26 13:58:27 -04002285 [OP_SEEK] = {
2286 .op_func = (nfsd4op_func)nfsd4_seek,
2287 .op_name = "OP_SEEK",
2288 },
J.Bruce Fieldsb5914802006-12-13 00:35:38 -08002289};
2290
J. Bruce Fields4f0cefb2014-03-11 15:39:13 -04002291int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op)
2292{
2293 struct nfsd4_operation *opdesc;
2294 nfsd4op_rsize estimator;
2295
2296 if (op->opnum == OP_ILLEGAL)
2297 return op_encode_hdr_size * sizeof(__be32);
2298 opdesc = OPDESC(op);
2299 estimator = opdesc->op_rsize_bop;
2300 return estimator ? estimator(rqstp, op) : PAGE_SIZE;
2301}
2302
J. Bruce Fields07d1f802014-03-06 20:39:29 -05002303void warn_on_nonidempotent_op(struct nfsd4_op *op)
2304{
2305 if (OPDESC(op)->op_flags & OP_MODIFIES_SOMETHING) {
2306 pr_err("unable to encode reply to nonidempotent op %d (%s)\n",
2307 op->opnum, nfsd4_op_name(op->opnum));
2308 WARN_ON_ONCE(1);
2309 }
2310}
2311
Adrian Bunkf1c7f792008-08-08 19:26:42 +03002312static const char *nfsd4_op_name(unsigned opnum)
Benny Halevyb001a1b2008-07-02 11:15:03 +03002313{
2314 if (opnum < ARRAY_SIZE(nfsd4_ops))
2315 return nfsd4_ops[opnum].op_name;
2316 return "unknown_operation";
2317}
2318
Linus Torvalds1da177e2005-04-16 15:20:36 -07002319#define nfsd4_voidres nfsd4_voidargs
Linus Torvalds1da177e2005-04-16 15:20:36 -07002320struct nfsd4_voidargs { int dummy; };
2321
Linus Torvalds1da177e2005-04-16 15:20:36 -07002322static struct svc_procedure nfsd_procedures4[2] = {
Yu Zhiguo0a93a472009-05-19 14:09:54 +08002323 [NFSPROC4_NULL] = {
2324 .pc_func = (svc_procfunc) nfsd4_proc_null,
2325 .pc_encode = (kxdrproc_t) nfs4svc_encode_voidres,
2326 .pc_argsize = sizeof(struct nfsd4_voidargs),
2327 .pc_ressize = sizeof(struct nfsd4_voidres),
2328 .pc_cachetype = RC_NOCACHE,
2329 .pc_xdrressize = 1,
2330 },
2331 [NFSPROC4_COMPOUND] = {
2332 .pc_func = (svc_procfunc) nfsd4_proc_compound,
2333 .pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
2334 .pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
2335 .pc_argsize = sizeof(struct nfsd4_compoundargs),
2336 .pc_ressize = sizeof(struct nfsd4_compoundres),
J. Bruce Fields3e98abf2011-07-16 17:15:10 -04002337 .pc_release = nfsd4_release_compoundargs,
Yu Zhiguo0a93a472009-05-19 14:09:54 +08002338 .pc_cachetype = RC_NOCACHE,
2339 .pc_xdrressize = NFSD_BUFSIZE/4,
2340 },
Linus Torvalds1da177e2005-04-16 15:20:36 -07002341};
2342
2343struct svc_version nfsd_version4 = {
2344 .vs_vers = 4,
2345 .vs_nproc = 2,
2346 .vs_proc = nfsd_procedures4,
2347 .vs_dispatch = nfsd_dispatch,
2348 .vs_xdrsize = NFS4_SVC_XDRSIZE,
Kinglong Mee7e55b592013-12-31 13:17:20 +08002349 .vs_rpcb_optnl = 1,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002350};
2351
2352/*
2353 * Local variables:
2354 * c-basic-offset: 8
2355 * End:
2356 */