]>
Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * 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. | |
1da177e4 | 34 | */ |
880a3a53 | 35 | #include <linux/fs_struct.h> |
7e06b7f9 | 36 | #include <linux/file.h> |
b0cb9085 | 37 | #include <linux/falloc.h> |
5a0e3ad6 | 38 | #include <linux/slab.h> |
e0639dc5 | 39 | #include <linux/kthread.h> |
1da177e4 | 40 | |
58e7b33a | 41 | #include "idmap.h" |
9a74af21 BH |
42 | #include "cache.h" |
43 | #include "xdr4.h" | |
0a3adade | 44 | #include "vfs.h" |
8b70484c | 45 | #include "current_stateid.h" |
3320fef1 | 46 | #include "netns.h" |
4ac7249e | 47 | #include "acl.h" |
9cf514cc | 48 | #include "pnfs.h" |
31ef83dc | 49 | #include "trace.h" |
1da177e4 | 50 | |
18032ca0 DQ |
51 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
52 | #include <linux/security.h> | |
53 | ||
54 | static inline void | |
55 | nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval) | |
56 | { | |
2b0143b5 | 57 | struct inode *inode = d_inode(resfh->fh_dentry); |
18032ca0 DQ |
58 | int status; |
59 | ||
5955102c | 60 | inode_lock(inode); |
18032ca0 DQ |
61 | status = security_inode_setsecctx(resfh->fh_dentry, |
62 | label->data, label->len); | |
5955102c | 63 | inode_unlock(inode); |
18032ca0 DQ |
64 | |
65 | if (status) | |
66 | /* | |
67 | * XXX: We should really fail the whole open, but we may | |
68 | * already have created a new file, so it may be too | |
69 | * late. For now this seems the least of evils: | |
70 | */ | |
71 | bmval[2] &= ~FATTR4_WORD2_SECURITY_LABEL; | |
72 | ||
73 | return; | |
74 | } | |
75 | #else | |
76 | static inline void | |
77 | nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval) | |
78 | { } | |
79 | #endif | |
80 | ||
1da177e4 LT |
81 | #define NFSDDBG_FACILITY NFSDDBG_PROC |
82 | ||
3c8e0316 YZ |
83 | static u32 nfsd_attrmask[] = { |
84 | NFSD_WRITEABLE_ATTRS_WORD0, | |
85 | NFSD_WRITEABLE_ATTRS_WORD1, | |
86 | NFSD_WRITEABLE_ATTRS_WORD2 | |
87 | }; | |
88 | ||
89 | static u32 nfsd41_ex_attrmask[] = { | |
90 | NFSD_SUPPATTR_EXCLCREAT_WORD0, | |
91 | NFSD_SUPPATTR_EXCLCREAT_WORD1, | |
92 | NFSD_SUPPATTR_EXCLCREAT_WORD2 | |
93 | }; | |
94 | ||
95 | static __be32 | |
96 | check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
97 | u32 *bmval, u32 *writable) | |
98 | { | |
99 | struct dentry *dentry = cstate->current_fh.fh_dentry; | |
32ddd944 | 100 | struct svc_export *exp = cstate->current_fh.fh_export; |
3c8e0316 | 101 | |
916d2d84 | 102 | if (!nfsd_attrs_supported(cstate->minorversion, bmval)) |
3c8e0316 | 103 | return nfserr_attrnotsupp; |
916d2d84 BF |
104 | if ((bmval[0] & FATTR4_WORD0_ACL) && !IS_POSIXACL(d_inode(dentry))) |
105 | return nfserr_attrnotsupp; | |
32ddd944 BF |
106 | if ((bmval[2] & FATTR4_WORD2_SECURITY_LABEL) && |
107 | !(exp->ex_flags & NFSEXP_SECURITY_LABEL)) | |
108 | return nfserr_attrnotsupp; | |
916d2d84 BF |
109 | if (writable && !bmval_is_subset(bmval, writable)) |
110 | return nfserr_inval; | |
47057abd AG |
111 | if (writable && (bmval[2] & FATTR4_WORD2_MODE_UMASK) && |
112 | (bmval[1] & FATTR4_WORD1_MODE)) | |
113 | return nfserr_inval; | |
3c8e0316 YZ |
114 | return nfs_ok; |
115 | } | |
116 | ||
117 | static __be32 | |
118 | nfsd4_check_open_attributes(struct svc_rqst *rqstp, | |
119 | struct nfsd4_compound_state *cstate, struct nfsd4_open *open) | |
120 | { | |
121 | __be32 status = nfs_ok; | |
122 | ||
123 | if (open->op_create == NFS4_OPEN_CREATE) { | |
124 | if (open->op_createmode == NFS4_CREATE_UNCHECKED | |
125 | || open->op_createmode == NFS4_CREATE_GUARDED) | |
126 | status = check_attr_support(rqstp, cstate, | |
127 | open->op_bmval, nfsd_attrmask); | |
128 | else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1) | |
129 | status = check_attr_support(rqstp, cstate, | |
130 | open->op_bmval, nfsd41_ex_attrmask); | |
131 | } | |
132 | ||
133 | return status; | |
134 | } | |
135 | ||
9208faf2 YZ |
136 | static int |
137 | is_create_with_attrs(struct nfsd4_open *open) | |
138 | { | |
139 | return open->op_create == NFS4_OPEN_CREATE | |
140 | && (open->op_createmode == NFS4_CREATE_UNCHECKED | |
141 | || open->op_createmode == NFS4_CREATE_GUARDED | |
142 | || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1); | |
143 | } | |
144 | ||
145 | /* | |
146 | * if error occurs when setting the acl, just clear the acl bit | |
147 | * in the returned attr bitmap. | |
148 | */ | |
149 | static void | |
150 | do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp, | |
151 | struct nfs4_acl *acl, u32 *bmval) | |
152 | { | |
153 | __be32 status; | |
154 | ||
155 | status = nfsd4_set_nfs4_acl(rqstp, fhp, acl); | |
156 | if (status) | |
157 | /* | |
158 | * We should probably fail the whole open at this point, | |
159 | * but we've already created the file, so it's too late; | |
160 | * So this seems the least of evils: | |
161 | */ | |
162 | bmval[0] &= ~FATTR4_WORD0_ACL; | |
163 | } | |
164 | ||
1da177e4 LT |
165 | static inline void |
166 | fh_dup2(struct svc_fh *dst, struct svc_fh *src) | |
167 | { | |
168 | fh_put(dst); | |
169 | dget(src->fh_dentry); | |
170 | if (src->fh_export) | |
bf18f163 | 171 | exp_get(src->fh_export); |
1da177e4 LT |
172 | *dst = *src; |
173 | } | |
174 | ||
b37ad28b | 175 | static __be32 |
dc730e17 | 176 | do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode) |
1da177e4 | 177 | { |
b37ad28b | 178 | __be32 status; |
1da177e4 LT |
179 | |
180 | if (open->op_truncate && | |
181 | !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE)) | |
182 | return nfserr_inval; | |
183 | ||
a043226b BF |
184 | accmode |= NFSD_MAY_READ_IF_EXEC; |
185 | ||
1da177e4 | 186 | if (open->op_share_access & NFS4_SHARE_ACCESS_READ) |
8837abca | 187 | accmode |= NFSD_MAY_READ; |
9801d8a3 | 188 | if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) |
8837abca | 189 | accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC); |
57ecb34f | 190 | if (open->op_share_deny & NFS4_SHARE_DENY_READ) |
8837abca | 191 | accmode |= NFSD_MAY_WRITE; |
1da177e4 LT |
192 | |
193 | status = fh_verify(rqstp, current_fh, S_IFREG, accmode); | |
194 | ||
195 | return status; | |
196 | } | |
197 | ||
aadab6c6 BF |
198 | static __be32 nfsd_check_obj_isreg(struct svc_fh *fh) |
199 | { | |
2b0143b5 | 200 | umode_t mode = d_inode(fh->fh_dentry)->i_mode; |
aadab6c6 BF |
201 | |
202 | if (S_ISREG(mode)) | |
203 | return nfs_ok; | |
204 | if (S_ISDIR(mode)) | |
205 | return nfserr_isdir; | |
206 | /* | |
207 | * Using err_symlink as our catch-all case may look odd; but | |
208 | * there's no other obvious error for this case in 4.0, and we | |
209 | * happen to know that it will cause the linux v4 client to do | |
210 | * the right thing on attempts to open something other than a | |
211 | * regular file. | |
212 | */ | |
213 | return nfserr_symlink; | |
214 | } | |
215 | ||
bbc9c36c BF |
216 | static void nfsd4_set_open_owner_reply_cache(struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh *resfh) |
217 | { | |
218 | if (nfsd4_has_session(cstate)) | |
219 | return; | |
220 | fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh, | |
221 | &resfh->fh_handle); | |
222 | } | |
223 | ||
b37ad28b | 224 | static __be32 |
c0e6bee4 | 225 | do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh **resfh) |
1da177e4 | 226 | { |
bbc9c36c | 227 | struct svc_fh *current_fh = &cstate->current_fh; |
7007c90f | 228 | int accmode; |
b37ad28b | 229 | __be32 status; |
1da177e4 | 230 | |
c0e6bee4 BF |
231 | *resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); |
232 | if (!*resfh) | |
59deeb9e | 233 | return nfserr_jukebox; |
c0e6bee4 | 234 | fh_init(*resfh, NFS4_FHSIZE); |
1da177e4 LT |
235 | open->op_truncate = 0; |
236 | ||
237 | if (open->op_create) { | |
79fb54ab BH |
238 | /* FIXME: check session persistence and pnfs flags. |
239 | * The nfsv4.1 spec requires the following semantics: | |
240 | * | |
241 | * Persistent | pNFS | Server REQUIRED | Client Allowed | |
242 | * Reply Cache | server | | | |
243 | * -------------+--------+-----------------+-------------------- | |
244 | * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1 | |
245 | * | | | (SHOULD) | |
246 | * | | and EXCLUSIVE4 | or EXCLUSIVE4 | |
247 | * | | | (SHOULD NOT) | |
248 | * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1 | |
249 | * yes | no | GUARDED4 | GUARDED4 | |
250 | * yes | yes | GUARDED4 | GUARDED4 | |
251 | */ | |
252 | ||
1da177e4 LT |
253 | /* |
254 | * Note: create modes (UNCHECKED,GUARDED...) are the same | |
ac6721a1 | 255 | * in NFSv4 as in v3 except EXCLUSIVE4_1. |
1da177e4 | 256 | */ |
880a3a53 | 257 | current->fs->umask = open->op_umask; |
ac6721a1 | 258 | status = do_nfsd_create(rqstp, current_fh, open->op_fname.data, |
1da177e4 | 259 | open->op_fname.len, &open->op_iattr, |
c0e6bee4 | 260 | *resfh, open->op_createmode, |
749997e5 | 261 | (u32 *)open->op_verf.data, |
856121b2 | 262 | &open->op_truncate, &open->op_created); |
880a3a53 | 263 | current->fs->umask = 0; |
749997e5 | 264 | |
18032ca0 | 265 | if (!status && open->op_label.len) |
c0e6bee4 | 266 | nfsd4_security_inode_setsecctx(*resfh, &open->op_label, open->op_bmval); |
18032ca0 | 267 | |
99f88726 | 268 | /* |
ead8fb8c KM |
269 | * Following rfc 3530 14.2.16, and rfc 5661 18.16.4 |
270 | * use the returned bitmask to indicate which attributes | |
271 | * we used to store the verifier: | |
749997e5 | 272 | */ |
ead8fb8c KM |
273 | if (nfsd_create_is_exclusive(open->op_createmode) && status == 0) |
274 | open->op_bmval[1] |= (FATTR4_WORD1_TIME_ACCESS | | |
275 | FATTR4_WORD1_TIME_MODIFY); | |
4335723e BF |
276 | } else |
277 | /* | |
278 | * Note this may exit with the parent still locked. | |
279 | * We will hold the lock until nfsd4_open's final | |
280 | * lookup, to prevent renames or unlinks until we've had | |
281 | * a chance to an acquire a delegation if appropriate. | |
282 | */ | |
1da177e4 | 283 | status = nfsd_lookup(rqstp, current_fh, |
c0e6bee4 | 284 | open->op_fname.data, open->op_fname.len, *resfh); |
9dc4e6c4 BF |
285 | if (status) |
286 | goto out; | |
c0e6bee4 | 287 | status = nfsd_check_obj_isreg(*resfh); |
af85852d BF |
288 | if (status) |
289 | goto out; | |
1da177e4 | 290 | |
9208faf2 | 291 | if (is_create_with_attrs(open) && open->op_acl != NULL) |
c0e6bee4 | 292 | do_set_nfs4_acl(rqstp, *resfh, open->op_acl, open->op_bmval); |
9208faf2 | 293 | |
c0e6bee4 | 294 | nfsd4_set_open_owner_reply_cache(cstate, open, *resfh); |
7007c90f | 295 | accmode = NFSD_MAY_NOP; |
89f6c336 BF |
296 | if (open->op_created || |
297 | open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR) | |
7007c90f | 298 | accmode |= NFSD_MAY_OWNER_OVERRIDE; |
c0e6bee4 | 299 | status = do_open_permission(rqstp, *resfh, open, accmode); |
41fd1e42 | 300 | set_change_info(&open->op_cinfo, current_fh); |
af85852d | 301 | out: |
1da177e4 LT |
302 | return status; |
303 | } | |
304 | ||
b37ad28b | 305 | static __be32 |
bbc9c36c | 306 | do_open_fhandle(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open) |
1da177e4 | 307 | { |
bbc9c36c | 308 | struct svc_fh *current_fh = &cstate->current_fh; |
b37ad28b | 309 | __be32 status; |
9f415eb2 | 310 | int accmode = 0; |
1da177e4 | 311 | |
1da177e4 LT |
312 | /* We don't know the target directory, and therefore can not |
313 | * set the change info | |
314 | */ | |
315 | ||
316 | memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info)); | |
317 | ||
bbc9c36c | 318 | nfsd4_set_open_owner_reply_cache(cstate, open, current_fh); |
1da177e4 LT |
319 | |
320 | open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) && | |
321 | (open->op_iattr.ia_size == 0); | |
9f415eb2 BF |
322 | /* |
323 | * In the delegation case, the client is telling us about an | |
324 | * open that it *already* performed locally, some time ago. We | |
325 | * should let it succeed now if possible. | |
326 | * | |
327 | * In the case of a CLAIM_FH open, on the other hand, the client | |
328 | * may be counting on us to enforce permissions (the Linux 4.1 | |
329 | * client uses this for normal opens, for example). | |
330 | */ | |
331 | if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEG_CUR_FH) | |
332 | accmode = NFSD_MAY_OWNER_OVERRIDE; | |
1da177e4 | 333 | |
9f415eb2 | 334 | status = do_open_permission(rqstp, current_fh, open, accmode); |
1da177e4 LT |
335 | |
336 | return status; | |
337 | } | |
338 | ||
60adfc50 AA |
339 | static void |
340 | copy_clientid(clientid_t *clid, struct nfsd4_session *session) | |
341 | { | |
342 | struct nfsd4_sessionid *sid = | |
343 | (struct nfsd4_sessionid *)session->se_sessionid.data; | |
344 | ||
345 | clid->cl_boot = sid->clientid.cl_boot; | |
346 | clid->cl_id = sid->clientid.cl_id; | |
347 | } | |
1da177e4 | 348 | |
7191155b | 349 | static __be32 |
ca364317 | 350 | nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 351 | union nfsd4_op_u *u) |
1da177e4 | 352 | { |
eb69853d | 353 | struct nfsd4_open *open = &u->open; |
b37ad28b | 354 | __be32 status; |
c0e6bee4 | 355 | struct svc_fh *resfh = NULL; |
3320fef1 SK |
356 | struct net *net = SVC_NET(rqstp); |
357 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); | |
03f318ca | 358 | bool reclaim = false; |
6668958f | 359 | |
fe0750e5 | 360 | dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n", |
1da177e4 | 361 | (int)open->op_fname.len, open->op_fname.data, |
fe0750e5 | 362 | open->op_openowner); |
1da177e4 | 363 | |
1da177e4 LT |
364 | /* This check required by spec. */ |
365 | if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL) | |
366 | return nfserr_inval; | |
367 | ||
856121b2 | 368 | open->op_created = 0; |
ab1350b2 MJ |
369 | /* |
370 | * RFC5661 18.51.3 | |
371 | * Before RECLAIM_COMPLETE done, server should deny new lock | |
372 | */ | |
373 | if (nfsd4_has_session(cstate) && | |
a52d726b JL |
374 | !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE, |
375 | &cstate->session->se_client->cl_flags) && | |
ab1350b2 MJ |
376 | open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
377 | return nfserr_grace; | |
378 | ||
60adfc50 AA |
379 | if (nfsd4_has_session(cstate)) |
380 | copy_clientid(&open->op_clientid, cstate->session); | |
381 | ||
1da177e4 | 382 | /* check seqid for replay. set nfs4_owner */ |
6cd22668 | 383 | status = nfsd4_process_open1(cstate, open, nn); |
a90b061c | 384 | if (status == nfserr_replay_me) { |
fe0750e5 | 385 | struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay; |
ca364317 | 386 | fh_put(&cstate->current_fh); |
a4773c08 BF |
387 | fh_copy_shallow(&cstate->current_fh.fh_handle, |
388 | &rp->rp_openfh); | |
8837abca | 389 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
390 | if (status) |
391 | dprintk("nfsd4_open: replay failed" | |
392 | " restoring previous filehandle\n"); | |
393 | else | |
a90b061c | 394 | status = nfserr_replay_me; |
1da177e4 LT |
395 | } |
396 | if (status) | |
397 | goto out; | |
9d313b17 BF |
398 | if (open->op_xdr_error) { |
399 | status = open->op_xdr_error; | |
400 | goto out; | |
401 | } | |
fb553c0f | 402 | |
3c8e0316 YZ |
403 | status = nfsd4_check_open_attributes(rqstp, cstate, open); |
404 | if (status) | |
405 | goto out; | |
406 | ||
fb553c0f BF |
407 | /* Openowner is now set, so sequence id will get bumped. Now we need |
408 | * these checks before we do any creates: */ | |
cbd0d51a | 409 | status = nfserr_grace; |
c87fb4a3 | 410 | if (opens_in_grace(net) && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a BF |
411 | goto out; |
412 | status = nfserr_no_grace; | |
c87fb4a3 | 413 | if (!opens_in_grace(net) && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a | 414 | goto out; |
fb553c0f | 415 | |
1da177e4 | 416 | switch (open->op_claim_type) { |
0dd3c192 | 417 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
1da177e4 | 418 | case NFS4_OPEN_CLAIM_NULL: |
c0e6bee4 | 419 | status = do_open_lookup(rqstp, cstate, open, &resfh); |
1da177e4 LT |
420 | if (status) |
421 | goto out; | |
422 | break; | |
423 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
3320fef1 | 424 | status = nfs4_check_open_reclaim(&open->op_clientid, |
0fe492db | 425 | cstate, nn); |
0cf99b91 MJ |
426 | if (status) |
427 | goto out; | |
ba5378b6 | 428 | open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED; |
03f318ca | 429 | reclaim = true; |
0a4c9265 | 430 | /* fall through */ |
8b289b2c BF |
431 | case NFS4_OPEN_CLAIM_FH: |
432 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
bbc9c36c | 433 | status = do_open_fhandle(rqstp, cstate, open); |
1da177e4 LT |
434 | if (status) |
435 | goto out; | |
c0e6bee4 | 436 | resfh = &cstate->current_fh; |
1da177e4 | 437 | break; |
8b289b2c | 438 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: |
1da177e4 | 439 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: |
2fdada03 | 440 | dprintk("NFSD: unsupported OPEN claim type %d\n", |
1da177e4 LT |
441 | open->op_claim_type); |
442 | status = nfserr_notsupp; | |
443 | goto out; | |
444 | default: | |
2fdada03 | 445 | dprintk("NFSD: Invalid OPEN claim type %d\n", |
1da177e4 LT |
446 | open->op_claim_type); |
447 | status = nfserr_inval; | |
448 | goto out; | |
449 | } | |
450 | /* | |
451 | * nfsd4_process_open2() does the actual opening of the file. If | |
452 | * successful, it (1) truncates the file if open->op_truncate was | |
453 | * set, (2) sets open->op_stateid, (3) sets open->op_delegation. | |
454 | */ | |
c0e6bee4 | 455 | status = nfsd4_process_open2(rqstp, resfh, open); |
b3fbfe0e JL |
456 | WARN(status && open->op_created, |
457 | "nfsd4_process_open2 failed to open newly-created file! status=%u\n", | |
458 | be32_to_cpu(status)); | |
03f318ca BF |
459 | if (reclaim && !status) |
460 | nn->somebody_reclaimed = true; | |
1da177e4 | 461 | out: |
c0e6bee4 BF |
462 | if (resfh && resfh != &cstate->current_fh) { |
463 | fh_dup2(&cstate->current_fh, resfh); | |
464 | fh_put(resfh); | |
465 | kfree(resfh); | |
466 | } | |
42297899 | 467 | nfsd4_cleanup_open_state(cstate, open); |
9411b1d4 | 468 | nfsd4_bump_seqid(cstate, status); |
1da177e4 LT |
469 | return status; |
470 | } | |
471 | ||
9d313b17 BF |
472 | /* |
473 | * OPEN is the only seqid-mutating operation whose decoding can fail | |
474 | * with a seqid-mutating error (specifically, decoding of user names in | |
475 | * the attributes). Therefore we have to do some processing to look up | |
476 | * the stateowner so that we can bump the seqid. | |
477 | */ | |
478 | static __be32 nfsd4_open_omfg(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_op *op) | |
479 | { | |
eb69853d | 480 | struct nfsd4_open *open = &op->u.open; |
9d313b17 BF |
481 | |
482 | if (!seqid_mutating_err(ntohl(op->status))) | |
483 | return op->status; | |
484 | if (nfsd4_has_session(cstate)) | |
485 | return op->status; | |
486 | open->op_xdr_error = op->status; | |
eb69853d | 487 | return nfsd4_open(rqstp, cstate, &op->u); |
9d313b17 BF |
488 | } |
489 | ||
1da177e4 LT |
490 | /* |
491 | * filehandle-manipulating ops. | |
492 | */ | |
7191155b | 493 | static __be32 |
b591480b | 494 | nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 495 | union nfsd4_op_u *u) |
1da177e4 | 496 | { |
eb69853d | 497 | u->getfh = &cstate->current_fh; |
1da177e4 LT |
498 | return nfs_ok; |
499 | } | |
500 | ||
7191155b | 501 | static __be32 |
ca364317 | 502 | nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 503 | union nfsd4_op_u *u) |
1da177e4 | 504 | { |
eb69853d CH |
505 | struct nfsd4_putfh *putfh = &u->putfh; |
506 | ||
ca364317 BF |
507 | fh_put(&cstate->current_fh); |
508 | cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen; | |
509 | memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval, | |
510 | putfh->pf_fhlen); | |
68d93184 | 511 | return fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS); |
1da177e4 LT |
512 | } |
513 | ||
7191155b | 514 | static __be32 |
b591480b | 515 | nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 516 | union nfsd4_op_u *u) |
1da177e4 | 517 | { |
b37ad28b | 518 | __be32 status; |
1da177e4 | 519 | |
ca364317 | 520 | fh_put(&cstate->current_fh); |
df547efb | 521 | status = exp_pseudoroot(rqstp, &cstate->current_fh); |
1da177e4 LT |
522 | return status; |
523 | } | |
524 | ||
7191155b | 525 | static __be32 |
b591480b | 526 | nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 527 | union nfsd4_op_u *u) |
1da177e4 | 528 | { |
ca364317 | 529 | if (!cstate->save_fh.fh_dentry) |
1da177e4 LT |
530 | return nfserr_restorefh; |
531 | ||
ca364317 | 532 | fh_dup2(&cstate->current_fh, &cstate->save_fh); |
37c593c5 TM |
533 | if (HAS_STATE_ID(cstate, SAVED_STATE_ID_FLAG)) { |
534 | memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t)); | |
535 | SET_STATE_ID(cstate, CURRENT_STATE_ID_FLAG); | |
536 | } | |
1da177e4 LT |
537 | return nfs_ok; |
538 | } | |
539 | ||
7191155b | 540 | static __be32 |
b591480b | 541 | nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 542 | union nfsd4_op_u *u) |
1da177e4 | 543 | { |
ca364317 | 544 | fh_dup2(&cstate->save_fh, &cstate->current_fh); |
37c593c5 TM |
545 | if (HAS_STATE_ID(cstate, CURRENT_STATE_ID_FLAG)) { |
546 | memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t)); | |
547 | SET_STATE_ID(cstate, SAVED_STATE_ID_FLAG); | |
548 | } | |
1da177e4 LT |
549 | return nfs_ok; |
550 | } | |
551 | ||
552 | /* | |
553 | * misc nfsv4 ops | |
554 | */ | |
7191155b | 555 | static __be32 |
ca364317 | 556 | nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 557 | union nfsd4_op_u *u) |
1da177e4 | 558 | { |
eb69853d CH |
559 | struct nfsd4_access *access = &u->access; |
560 | ||
1da177e4 LT |
561 | if (access->ac_req_access & ~NFS3_ACCESS_FULL) |
562 | return nfserr_inval; | |
563 | ||
564 | access->ac_resp_access = access->ac_req_access; | |
ca364317 BF |
565 | return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access, |
566 | &access->ac_supported); | |
1da177e4 LT |
567 | } |
568 | ||
b9c0ef85 | 569 | static void gen_boot_verifier(nfs4_verifier *verifier, struct net *net) |
ab4684d1 CL |
570 | { |
571 | __be32 verf[2]; | |
b9c0ef85 | 572 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
ab4684d1 | 573 | |
f419992c JL |
574 | /* |
575 | * This is opaque to client, so no need to byte-swap. Use | |
256a89fa AB |
576 | * __force to keep sparse happy. y2038 time_t overflow is |
577 | * irrelevant in this usage. | |
f419992c JL |
578 | */ |
579 | verf[0] = (__force __be32)nn->nfssvc_boot.tv_sec; | |
256a89fa | 580 | verf[1] = (__force __be32)nn->nfssvc_boot.tv_nsec; |
ab4684d1 CL |
581 | memcpy(verifier->data, verf, sizeof(verifier->data)); |
582 | } | |
583 | ||
7191155b | 584 | static __be32 |
ca364317 | 585 | nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 586 | union nfsd4_op_u *u) |
1da177e4 | 587 | { |
eb69853d CH |
588 | struct nfsd4_commit *commit = &u->commit; |
589 | ||
b9c0ef85 | 590 | gen_boot_verifier(&commit->co_verf, SVC_NET(rqstp)); |
75c096f7 | 591 | return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset, |
ca364317 | 592 | commit->co_count); |
1da177e4 LT |
593 | } |
594 | ||
b37ad28b | 595 | static __be32 |
ca364317 | 596 | nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 597 | union nfsd4_op_u *u) |
1da177e4 | 598 | { |
eb69853d | 599 | struct nfsd4_create *create = &u->create; |
1da177e4 | 600 | struct svc_fh resfh; |
b37ad28b | 601 | __be32 status; |
1da177e4 LT |
602 | dev_t rdev; |
603 | ||
604 | fh_init(&resfh, NFS4_FHSIZE); | |
605 | ||
fa08139d | 606 | status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_NOP); |
1da177e4 LT |
607 | if (status) |
608 | return status; | |
609 | ||
3c8e0316 YZ |
610 | status = check_attr_support(rqstp, cstate, create->cr_bmval, |
611 | nfsd_attrmask); | |
612 | if (status) | |
613 | return status; | |
614 | ||
880a3a53 | 615 | current->fs->umask = create->cr_umask; |
1da177e4 LT |
616 | switch (create->cr_type) { |
617 | case NF4LNK: | |
ca364317 BF |
618 | status = nfsd_symlink(rqstp, &cstate->current_fh, |
619 | create->cr_name, create->cr_namelen, | |
1e444f5b | 620 | create->cr_data, &resfh); |
1da177e4 LT |
621 | break; |
622 | ||
623 | case NF4BLK: | |
880a3a53 | 624 | status = nfserr_inval; |
1da177e4 LT |
625 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); |
626 | if (MAJOR(rdev) != create->cr_specdata1 || | |
627 | MINOR(rdev) != create->cr_specdata2) | |
880a3a53 | 628 | goto out_umask; |
ca364317 BF |
629 | status = nfsd_create(rqstp, &cstate->current_fh, |
630 | create->cr_name, create->cr_namelen, | |
631 | &create->cr_iattr, S_IFBLK, rdev, &resfh); | |
1da177e4 LT |
632 | break; |
633 | ||
634 | case NF4CHR: | |
880a3a53 | 635 | status = nfserr_inval; |
1da177e4 LT |
636 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); |
637 | if (MAJOR(rdev) != create->cr_specdata1 || | |
638 | MINOR(rdev) != create->cr_specdata2) | |
880a3a53 | 639 | goto out_umask; |
ca364317 BF |
640 | status = nfsd_create(rqstp, &cstate->current_fh, |
641 | create->cr_name, create->cr_namelen, | |
642 | &create->cr_iattr,S_IFCHR, rdev, &resfh); | |
1da177e4 LT |
643 | break; |
644 | ||
645 | case NF4SOCK: | |
ca364317 BF |
646 | status = nfsd_create(rqstp, &cstate->current_fh, |
647 | create->cr_name, create->cr_namelen, | |
648 | &create->cr_iattr, S_IFSOCK, 0, &resfh); | |
1da177e4 LT |
649 | break; |
650 | ||
651 | case NF4FIFO: | |
ca364317 BF |
652 | status = nfsd_create(rqstp, &cstate->current_fh, |
653 | create->cr_name, create->cr_namelen, | |
654 | &create->cr_iattr, S_IFIFO, 0, &resfh); | |
1da177e4 LT |
655 | break; |
656 | ||
657 | case NF4DIR: | |
658 | create->cr_iattr.ia_valid &= ~ATTR_SIZE; | |
ca364317 BF |
659 | status = nfsd_create(rqstp, &cstate->current_fh, |
660 | create->cr_name, create->cr_namelen, | |
661 | &create->cr_iattr, S_IFDIR, 0, &resfh); | |
1da177e4 LT |
662 | break; |
663 | ||
664 | default: | |
665 | status = nfserr_badtype; | |
666 | } | |
667 | ||
9208faf2 YZ |
668 | if (status) |
669 | goto out; | |
1da177e4 | 670 | |
18032ca0 DQ |
671 | if (create->cr_label.len) |
672 | nfsd4_security_inode_setsecctx(&resfh, &create->cr_label, create->cr_bmval); | |
673 | ||
9208faf2 YZ |
674 | if (create->cr_acl != NULL) |
675 | do_set_nfs4_acl(rqstp, &resfh, create->cr_acl, | |
676 | create->cr_bmval); | |
677 | ||
678 | fh_unlock(&cstate->current_fh); | |
679 | set_change_info(&create->cr_cinfo, &cstate->current_fh); | |
680 | fh_dup2(&cstate->current_fh, &resfh); | |
681 | out: | |
1da177e4 | 682 | fh_put(&resfh); |
880a3a53 BF |
683 | out_umask: |
684 | current->fs->umask = 0; | |
1da177e4 LT |
685 | return status; |
686 | } | |
687 | ||
7191155b | 688 | static __be32 |
ca364317 | 689 | nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 690 | union nfsd4_op_u *u) |
1da177e4 | 691 | { |
eb69853d | 692 | struct nfsd4_getattr *getattr = &u->getattr; |
b37ad28b | 693 | __be32 status; |
1da177e4 | 694 | |
8837abca | 695 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
696 | if (status) |
697 | return status; | |
698 | ||
699 | if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
700 | return nfserr_inval; | |
701 | ||
916d2d84 BF |
702 | getattr->ga_bmval[0] &= nfsd_suppattrs[cstate->minorversion][0]; |
703 | getattr->ga_bmval[1] &= nfsd_suppattrs[cstate->minorversion][1]; | |
704 | getattr->ga_bmval[2] &= nfsd_suppattrs[cstate->minorversion][2]; | |
1da177e4 | 705 | |
ca364317 | 706 | getattr->ga_fhp = &cstate->current_fh; |
1da177e4 LT |
707 | return nfs_ok; |
708 | } | |
709 | ||
7191155b | 710 | static __be32 |
ca364317 | 711 | nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 712 | union nfsd4_op_u *u) |
1da177e4 | 713 | { |
eb69853d | 714 | struct nfsd4_link *link = &u->link; |
95424460 | 715 | __be32 status; |
1da177e4 | 716 | |
ca364317 BF |
717 | status = nfsd_link(rqstp, &cstate->current_fh, |
718 | link->li_name, link->li_namelen, &cstate->save_fh); | |
1da177e4 | 719 | if (!status) |
ca364317 | 720 | set_change_info(&link->li_cinfo, &cstate->current_fh); |
1da177e4 LT |
721 | return status; |
722 | } | |
723 | ||
0ff7ab46 | 724 | static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh) |
1da177e4 LT |
725 | { |
726 | struct svc_fh tmp_fh; | |
b37ad28b | 727 | __be32 ret; |
1da177e4 LT |
728 | |
729 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
df547efb BF |
730 | ret = exp_pseudoroot(rqstp, &tmp_fh); |
731 | if (ret) | |
1da177e4 | 732 | return ret; |
0ff7ab46 | 733 | if (tmp_fh.fh_dentry == fh->fh_dentry) { |
1da177e4 LT |
734 | fh_put(&tmp_fh); |
735 | return nfserr_noent; | |
736 | } | |
737 | fh_put(&tmp_fh); | |
0ff7ab46 BF |
738 | return nfsd_lookup(rqstp, fh, "..", 2, fh); |
739 | } | |
740 | ||
741 | static __be32 | |
742 | nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 743 | union nfsd4_op_u *u) |
0ff7ab46 BF |
744 | { |
745 | return nfsd4_do_lookupp(rqstp, &cstate->current_fh); | |
1da177e4 LT |
746 | } |
747 | ||
7191155b | 748 | static __be32 |
ca364317 | 749 | nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 750 | union nfsd4_op_u *u) |
1da177e4 | 751 | { |
ca364317 | 752 | return nfsd_lookup(rqstp, &cstate->current_fh, |
eb69853d | 753 | u->lookup.lo_name, u->lookup.lo_len, |
ca364317 | 754 | &cstate->current_fh); |
1da177e4 LT |
755 | } |
756 | ||
7191155b | 757 | static __be32 |
ca364317 | 758 | nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 759 | union nfsd4_op_u *u) |
1da177e4 | 760 | { |
eb69853d | 761 | struct nfsd4_read *read = &u->read; |
b37ad28b | 762 | __be32 status; |
1da177e4 | 763 | |
7e06b7f9 | 764 | read->rd_filp = NULL; |
1da177e4 LT |
765 | if (read->rd_offset >= OFFSET_MAX) |
766 | return nfserr_inval; | |
767 | ||
87c5942e CL |
768 | trace_nfsd_read_start(rqstp, &cstate->current_fh, |
769 | read->rd_offset, read->rd_length); | |
770 | ||
9b3234b9 BF |
771 | /* |
772 | * If we do a zero copy read, then a client will see read data | |
773 | * that reflects the state of the file *after* performing the | |
774 | * following compound. | |
775 | * | |
776 | * To ensure proper ordering, we therefore turn off zero copy if | |
777 | * the client wants us to do more in this compound: | |
778 | */ | |
779 | if (!nfsd4_last_compound_op(rqstp)) | |
779fb0f3 | 780 | clear_bit(RQ_SPLICE_OK, &rqstp->rq_flags); |
9b3234b9 | 781 | |
1da177e4 | 782 | /* check stateid */ |
aa0d6aed AS |
783 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, |
784 | &read->rd_stateid, RD_STATE, | |
785 | &read->rd_filp, &read->rd_tmp_file); | |
af90f707 | 786 | if (status) { |
1da177e4 LT |
787 | dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); |
788 | goto out; | |
789 | } | |
790 | status = nfs_ok; | |
791 | out: | |
1da177e4 | 792 | read->rd_rqstp = rqstp; |
ca364317 | 793 | read->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
794 | return status; |
795 | } | |
796 | ||
34b1744c BF |
797 | |
798 | static void | |
799 | nfsd4_read_release(union nfsd4_op_u *u) | |
800 | { | |
801 | if (u->read.rd_filp) | |
802 | fput(u->read.rd_filp); | |
87c5942e CL |
803 | trace_nfsd_read_done(u->read.rd_rqstp, u->read.rd_fhp, |
804 | u->read.rd_offset, u->read.rd_length); | |
34b1744c BF |
805 | } |
806 | ||
7191155b | 807 | static __be32 |
ca364317 | 808 | nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 809 | union nfsd4_op_u *u) |
1da177e4 | 810 | { |
eb69853d | 811 | struct nfsd4_readdir *readdir = &u->readdir; |
1da177e4 LT |
812 | u64 cookie = readdir->rd_cookie; |
813 | static const nfs4_verifier zeroverf; | |
814 | ||
815 | /* no need to check permission - this will be done in nfsd_readdir() */ | |
816 | ||
817 | if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
818 | return nfserr_inval; | |
819 | ||
916d2d84 BF |
820 | readdir->rd_bmval[0] &= nfsd_suppattrs[cstate->minorversion][0]; |
821 | readdir->rd_bmval[1] &= nfsd_suppattrs[cstate->minorversion][1]; | |
822 | readdir->rd_bmval[2] &= nfsd_suppattrs[cstate->minorversion][2]; | |
1da177e4 | 823 | |
832023bf | 824 | if ((cookie == 1) || (cookie == 2) || |
1da177e4 LT |
825 | (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) |
826 | return nfserr_bad_cookie; | |
827 | ||
828 | readdir->rd_rqstp = rqstp; | |
ca364317 | 829 | readdir->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
830 | return nfs_ok; |
831 | } | |
832 | ||
7191155b | 833 | static __be32 |
ca364317 | 834 | nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 835 | union nfsd4_op_u *u) |
1da177e4 | 836 | { |
eb69853d CH |
837 | u->readlink.rl_rqstp = rqstp; |
838 | u->readlink.rl_fhp = &cstate->current_fh; | |
1da177e4 LT |
839 | return nfs_ok; |
840 | } | |
841 | ||
7191155b | 842 | static __be32 |
ca364317 | 843 | nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 844 | union nfsd4_op_u *u) |
1da177e4 | 845 | { |
eb69853d | 846 | struct nfsd4_remove *remove = &u->remove; |
b37ad28b | 847 | __be32 status; |
1da177e4 | 848 | |
c87fb4a3 | 849 | if (opens_in_grace(SVC_NET(rqstp))) |
c815afc7 | 850 | return nfserr_grace; |
ca364317 BF |
851 | status = nfsd_unlink(rqstp, &cstate->current_fh, 0, |
852 | remove->rm_name, remove->rm_namelen); | |
1da177e4 | 853 | if (!status) { |
ca364317 BF |
854 | fh_unlock(&cstate->current_fh); |
855 | set_change_info(&remove->rm_cinfo, &cstate->current_fh); | |
1da177e4 LT |
856 | } |
857 | return status; | |
858 | } | |
859 | ||
7191155b | 860 | static __be32 |
ca364317 | 861 | nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 862 | union nfsd4_op_u *u) |
1da177e4 | 863 | { |
eb69853d | 864 | struct nfsd4_rename *rename = &u->rename; |
95424460 | 865 | __be32 status; |
1da177e4 | 866 | |
f8f71d00 | 867 | if (opens_in_grace(SVC_NET(rqstp))) |
c815afc7 | 868 | return nfserr_grace; |
ca364317 BF |
869 | status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname, |
870 | rename->rn_snamelen, &cstate->current_fh, | |
1da177e4 | 871 | rename->rn_tname, rename->rn_tnamelen); |
2a6cf944 BF |
872 | if (status) |
873 | return status; | |
874 | set_change_info(&rename->rn_sinfo, &cstate->current_fh); | |
875 | set_change_info(&rename->rn_tinfo, &cstate->save_fh); | |
876 | return nfs_ok; | |
1da177e4 LT |
877 | } |
878 | ||
dcb488a3 AA |
879 | static __be32 |
880 | nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 881 | union nfsd4_op_u *u) |
dcb488a3 | 882 | { |
eb69853d | 883 | struct nfsd4_secinfo *secinfo = &u->secinfo; |
dcb488a3 AA |
884 | struct svc_export *exp; |
885 | struct dentry *dentry; | |
886 | __be32 err; | |
887 | ||
29a78a3e BF |
888 | err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC); |
889 | if (err) | |
890 | return err; | |
dcb488a3 AA |
891 | err = nfsd_lookup_dentry(rqstp, &cstate->current_fh, |
892 | secinfo->si_name, secinfo->si_namelen, | |
893 | &exp, &dentry); | |
894 | if (err) | |
895 | return err; | |
2f6fc056 | 896 | fh_unlock(&cstate->current_fh); |
2b0143b5 | 897 | if (d_really_is_negative(dentry)) { |
dcb488a3 AA |
898 | exp_put(exp); |
899 | err = nfserr_noent; | |
900 | } else | |
901 | secinfo->si_exp = exp; | |
902 | dput(dentry); | |
56560b9a BF |
903 | if (cstate->minorversion) |
904 | /* See rfc 5661 section 2.6.3.1.1.8 */ | |
905 | fh_put(&cstate->current_fh); | |
dcb488a3 AA |
906 | return err; |
907 | } | |
908 | ||
04f4ad16 BF |
909 | static __be32 |
910 | nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 911 | union nfsd4_op_u *u) |
04f4ad16 BF |
912 | { |
913 | __be32 err; | |
914 | ||
eb69853d | 915 | switch (u->secinfo_no_name.sin_style) { |
04f4ad16 BF |
916 | case NFS4_SECINFO_STYLE4_CURRENT_FH: |
917 | break; | |
918 | case NFS4_SECINFO_STYLE4_PARENT: | |
919 | err = nfsd4_do_lookupp(rqstp, &cstate->current_fh); | |
920 | if (err) | |
921 | return err; | |
922 | break; | |
923 | default: | |
924 | return nfserr_inval; | |
925 | } | |
bf18f163 | 926 | |
eb69853d | 927 | u->secinfo_no_name.sin_exp = exp_get(cstate->current_fh.fh_export); |
04f4ad16 BF |
928 | fh_put(&cstate->current_fh); |
929 | return nfs_ok; | |
930 | } | |
931 | ||
34b1744c BF |
932 | static void |
933 | nfsd4_secinfo_release(union nfsd4_op_u *u) | |
934 | { | |
935 | if (u->secinfo.si_exp) | |
936 | exp_put(u->secinfo.si_exp); | |
937 | } | |
938 | ||
ec572b9e EG |
939 | static void |
940 | nfsd4_secinfo_no_name_release(union nfsd4_op_u *u) | |
941 | { | |
942 | if (u->secinfo_no_name.sin_exp) | |
943 | exp_put(u->secinfo_no_name.sin_exp); | |
944 | } | |
945 | ||
7191155b | 946 | static __be32 |
ca364317 | 947 | nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 948 | union nfsd4_op_u *u) |
1da177e4 | 949 | { |
eb69853d | 950 | struct nfsd4_setattr *setattr = &u->setattr; |
b37ad28b | 951 | __be32 status = nfs_ok; |
96f6f985 | 952 | int err; |
1da177e4 | 953 | |
1da177e4 | 954 | if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { |
af90f707 | 955 | status = nfs4_preprocess_stateid_op(rqstp, cstate, |
aa0d6aed AS |
956 | &cstate->current_fh, &setattr->sa_stateid, |
957 | WR_STATE, NULL, NULL); | |
375c5547 | 958 | if (status) { |
3e3b4800 | 959 | dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); |
375c5547 BF |
960 | return status; |
961 | } | |
1da177e4 | 962 | } |
96f6f985 AV |
963 | err = fh_want_write(&cstate->current_fh); |
964 | if (err) | |
965 | return nfserrno(err); | |
1da177e4 | 966 | status = nfs_ok; |
3c8e0316 YZ |
967 | |
968 | status = check_attr_support(rqstp, cstate, setattr->sa_bmval, | |
969 | nfsd_attrmask); | |
970 | if (status) | |
971 | goto out; | |
972 | ||
1da177e4 | 973 | if (setattr->sa_acl != NULL) |
ca364317 BF |
974 | status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh, |
975 | setattr->sa_acl); | |
1da177e4 | 976 | if (status) |
18f335af | 977 | goto out; |
18032ca0 DQ |
978 | if (setattr->sa_label.len) |
979 | status = nfsd4_set_nfs4_label(rqstp, &cstate->current_fh, | |
980 | &setattr->sa_label); | |
981 | if (status) | |
982 | goto out; | |
ca364317 | 983 | status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr, |
1da177e4 | 984 | 0, (time_t)0); |
18f335af | 985 | out: |
bad0dcff | 986 | fh_drop_write(&cstate->current_fh); |
1da177e4 LT |
987 | return status; |
988 | } | |
989 | ||
7191155b | 990 | static __be32 |
ca364317 | 991 | nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 992 | union nfsd4_op_u *u) |
1da177e4 | 993 | { |
eb69853d | 994 | struct nfsd4_write *write = &u->write; |
1da177e4 LT |
995 | stateid_t *stateid = &write->wr_stateid; |
996 | struct file *filp = NULL; | |
b37ad28b | 997 | __be32 status = nfs_ok; |
31dec253 | 998 | unsigned long cnt; |
ffe1137b | 999 | int nvecs; |
1da177e4 | 1000 | |
1da177e4 LT |
1001 | if (write->wr_offset >= OFFSET_MAX) |
1002 | return nfserr_inval; | |
1003 | ||
d890be15 CL |
1004 | cnt = write->wr_buflen; |
1005 | trace_nfsd_write_start(rqstp, &cstate->current_fh, | |
1006 | write->wr_offset, cnt); | |
aa0d6aed AS |
1007 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, |
1008 | stateid, WR_STATE, &filp, NULL); | |
375c5547 BF |
1009 | if (status) { |
1010 | dprintk("NFSD: nfsd4_write: couldn't process stateid!\n"); | |
1011 | return status; | |
1012 | } | |
1013 | ||
1da177e4 | 1014 | write->wr_how_written = write->wr_stable_how; |
b9c0ef85 | 1015 | gen_boot_verifier(&write->wr_verifier, SVC_NET(rqstp)); |
1da177e4 | 1016 | |
3fd9557a CL |
1017 | nvecs = svc_fill_write_vector(rqstp, write->wr_pagelist, |
1018 | &write->wr_head, write->wr_buflen); | |
ffe1137b BF |
1019 | WARN_ON_ONCE(nvecs > ARRAY_SIZE(rqstp->rq_vec)); |
1020 | ||
af90f707 CH |
1021 | status = nfsd_vfs_write(rqstp, &cstate->current_fh, filp, |
1022 | write->wr_offset, rqstp->rq_vec, nvecs, &cnt, | |
54bbb7d2 | 1023 | write->wr_how_written); |
af90f707 | 1024 | fput(filp); |
1da177e4 | 1025 | |
31dec253 | 1026 | write->wr_bytes_written = cnt; |
d890be15 CL |
1027 | trace_nfsd_write_done(rqstp, &cstate->current_fh, |
1028 | write->wr_offset, cnt); | |
1da177e4 | 1029 | return status; |
1da177e4 LT |
1030 | } |
1031 | ||
ffa0160a | 1032 | static __be32 |
29ae7f9d AS |
1033 | nfsd4_verify_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
1034 | stateid_t *src_stateid, struct file **src, | |
1035 | stateid_t *dst_stateid, struct file **dst) | |
ffa0160a | 1036 | { |
ffa0160a CH |
1037 | __be32 status; |
1038 | ||
01310bb7 SM |
1039 | if (!cstate->save_fh.fh_dentry) |
1040 | return nfserr_nofilehandle; | |
1041 | ||
ffa0160a | 1042 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->save_fh, |
29ae7f9d | 1043 | src_stateid, RD_STATE, src, NULL); |
ffa0160a CH |
1044 | if (status) { |
1045 | dprintk("NFSD: %s: couldn't process src stateid!\n", __func__); | |
1046 | goto out; | |
1047 | } | |
1048 | ||
1049 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, | |
29ae7f9d | 1050 | dst_stateid, WR_STATE, dst, NULL); |
ffa0160a CH |
1051 | if (status) { |
1052 | dprintk("NFSD: %s: couldn't process dst stateid!\n", __func__); | |
1053 | goto out_put_src; | |
1054 | } | |
1055 | ||
1056 | /* fix up for NFS-specific error code */ | |
29ae7f9d AS |
1057 | if (!S_ISREG(file_inode(*src)->i_mode) || |
1058 | !S_ISREG(file_inode(*dst)->i_mode)) { | |
ffa0160a CH |
1059 | status = nfserr_wrong_type; |
1060 | goto out_put_dst; | |
1061 | } | |
1062 | ||
29ae7f9d AS |
1063 | out: |
1064 | return status; | |
1065 | out_put_dst: | |
1066 | fput(*dst); | |
1067 | out_put_src: | |
1068 | fput(*src); | |
1069 | goto out; | |
1070 | } | |
1071 | ||
1072 | static __be32 | |
1073 | nfsd4_clone(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 1074 | union nfsd4_op_u *u) |
29ae7f9d | 1075 | { |
eb69853d | 1076 | struct nfsd4_clone *clone = &u->clone; |
29ae7f9d AS |
1077 | struct file *src, *dst; |
1078 | __be32 status; | |
1079 | ||
1080 | status = nfsd4_verify_copy(rqstp, cstate, &clone->cl_src_stateid, &src, | |
1081 | &clone->cl_dst_stateid, &dst); | |
1082 | if (status) | |
1083 | goto out; | |
1084 | ||
ffa0160a CH |
1085 | status = nfsd4_clone_file_range(src, clone->cl_src_pos, |
1086 | dst, clone->cl_dst_pos, clone->cl_count); | |
1087 | ||
ffa0160a | 1088 | fput(dst); |
ffa0160a CH |
1089 | fput(src); |
1090 | out: | |
1091 | return status; | |
1092 | } | |
1093 | ||
e0639dc5 OK |
1094 | void nfs4_put_copy(struct nfsd4_copy *copy) |
1095 | { | |
1096 | if (!refcount_dec_and_test(©->refcount)) | |
1097 | return; | |
1098 | kfree(copy); | |
1099 | } | |
1100 | ||
1101 | static bool | |
1102 | check_and_set_stop_copy(struct nfsd4_copy *copy) | |
1103 | { | |
1104 | bool value; | |
1105 | ||
1106 | spin_lock(©->cp_clp->async_lock); | |
1107 | value = copy->stopped; | |
1108 | if (!copy->stopped) | |
1109 | copy->stopped = true; | |
1110 | spin_unlock(©->cp_clp->async_lock); | |
1111 | return value; | |
1112 | } | |
1113 | ||
1114 | static void nfsd4_stop_copy(struct nfsd4_copy *copy) | |
1115 | { | |
1116 | /* only 1 thread should stop the copy */ | |
1117 | if (!check_and_set_stop_copy(copy)) | |
1118 | kthread_stop(copy->copy_task); | |
1119 | nfs4_put_copy(copy); | |
1120 | } | |
1121 | ||
1122 | static struct nfsd4_copy *nfsd4_get_copy(struct nfs4_client *clp) | |
1123 | { | |
1124 | struct nfsd4_copy *copy = NULL; | |
1125 | ||
1126 | spin_lock(&clp->async_lock); | |
1127 | if (!list_empty(&clp->async_copies)) { | |
1128 | copy = list_first_entry(&clp->async_copies, struct nfsd4_copy, | |
1129 | copies); | |
1130 | refcount_inc(©->refcount); | |
1131 | } | |
1132 | spin_unlock(&clp->async_lock); | |
1133 | return copy; | |
1134 | } | |
1135 | ||
1136 | void nfsd4_shutdown_copy(struct nfs4_client *clp) | |
1137 | { | |
1138 | struct nfsd4_copy *copy; | |
1139 | ||
1140 | while ((copy = nfsd4_get_copy(clp)) != NULL) | |
1141 | nfsd4_stop_copy(copy); | |
1142 | } | |
1143 | ||
1144 | static void nfsd4_cb_offload_release(struct nfsd4_callback *cb) | |
1145 | { | |
1146 | struct nfsd4_copy *copy = container_of(cb, struct nfsd4_copy, cp_cb); | |
1147 | ||
1148 | nfs4_put_copy(copy); | |
1149 | } | |
1150 | ||
1151 | static int nfsd4_cb_offload_done(struct nfsd4_callback *cb, | |
1152 | struct rpc_task *task) | |
1153 | { | |
1154 | return 1; | |
1155 | } | |
1156 | ||
1157 | static const struct nfsd4_callback_ops nfsd4_cb_offload_ops = { | |
1158 | .release = nfsd4_cb_offload_release, | |
1159 | .done = nfsd4_cb_offload_done | |
1160 | }; | |
1161 | ||
1162 | static void nfsd4_init_copy_res(struct nfsd4_copy *copy, bool sync) | |
1163 | { | |
1164 | copy->cp_res.wr_stable_how = NFS_UNSTABLE; | |
1165 | copy->cp_synchronous = sync; | |
1166 | gen_boot_verifier(©->cp_res.wr_verifier, copy->cp_clp->net); | |
1167 | } | |
1168 | ||
1169 | static ssize_t _nfsd_copy_file_range(struct nfsd4_copy *copy) | |
1170 | { | |
1171 | ssize_t bytes_copied = 0; | |
1172 | size_t bytes_total = copy->cp_count; | |
1173 | u64 src_pos = copy->cp_src_pos; | |
1174 | u64 dst_pos = copy->cp_dst_pos; | |
1175 | ||
1176 | do { | |
1177 | if (kthread_should_stop()) | |
1178 | break; | |
1179 | bytes_copied = nfsd_copy_file_range(copy->file_src, src_pos, | |
1180 | copy->file_dst, dst_pos, bytes_total); | |
1181 | if (bytes_copied <= 0) | |
1182 | break; | |
1183 | bytes_total -= bytes_copied; | |
1184 | copy->cp_res.wr_bytes_written += bytes_copied; | |
1185 | src_pos += bytes_copied; | |
1186 | dst_pos += bytes_copied; | |
1187 | } while (bytes_total > 0 && !copy->cp_synchronous); | |
1188 | return bytes_copied; | |
1189 | } | |
1190 | ||
1191 | static __be32 nfsd4_do_copy(struct nfsd4_copy *copy, bool sync) | |
1192 | { | |
1193 | __be32 status; | |
1194 | ssize_t bytes; | |
1195 | ||
1196 | bytes = _nfsd_copy_file_range(copy); | |
1197 | /* for async copy, we ignore the error, client can always retry | |
1198 | * to get the error | |
1199 | */ | |
1200 | if (bytes < 0 && !copy->cp_res.wr_bytes_written) | |
1201 | status = nfserrno(bytes); | |
1202 | else { | |
1203 | nfsd4_init_copy_res(copy, sync); | |
1204 | status = nfs_ok; | |
1205 | } | |
1206 | ||
1207 | fput(copy->file_src); | |
1208 | fput(copy->file_dst); | |
1209 | return status; | |
1210 | } | |
1211 | ||
1212 | static void dup_copy_fields(struct nfsd4_copy *src, struct nfsd4_copy *dst) | |
1213 | { | |
1214 | dst->cp_src_pos = src->cp_src_pos; | |
1215 | dst->cp_dst_pos = src->cp_dst_pos; | |
1216 | dst->cp_count = src->cp_count; | |
1217 | dst->cp_synchronous = src->cp_synchronous; | |
1218 | memcpy(&dst->cp_res, &src->cp_res, sizeof(src->cp_res)); | |
1219 | memcpy(&dst->fh, &src->fh, sizeof(src->fh)); | |
1220 | dst->cp_clp = src->cp_clp; | |
1221 | dst->file_dst = get_file(src->file_dst); | |
1222 | dst->file_src = get_file(src->file_src); | |
1223 | memcpy(&dst->cp_stateid, &src->cp_stateid, sizeof(src->cp_stateid)); | |
1224 | } | |
1225 | ||
1226 | static void cleanup_async_copy(struct nfsd4_copy *copy) | |
1227 | { | |
1228 | nfs4_free_cp_state(copy); | |
1229 | fput(copy->file_dst); | |
1230 | fput(copy->file_src); | |
1231 | spin_lock(©->cp_clp->async_lock); | |
1232 | list_del(©->copies); | |
1233 | spin_unlock(©->cp_clp->async_lock); | |
1234 | nfs4_put_copy(copy); | |
1235 | } | |
1236 | ||
1237 | static int nfsd4_do_async_copy(void *data) | |
1238 | { | |
1239 | struct nfsd4_copy *copy = (struct nfsd4_copy *)data; | |
1240 | struct nfsd4_copy *cb_copy; | |
1241 | ||
1242 | copy->nfserr = nfsd4_do_copy(copy, 0); | |
1243 | cb_copy = kzalloc(sizeof(struct nfsd4_copy), GFP_KERNEL); | |
1244 | if (!cb_copy) | |
1245 | goto out; | |
1246 | memcpy(&cb_copy->cp_res, ©->cp_res, sizeof(copy->cp_res)); | |
1247 | cb_copy->cp_clp = copy->cp_clp; | |
1248 | cb_copy->nfserr = copy->nfserr; | |
1249 | memcpy(&cb_copy->fh, ©->fh, sizeof(copy->fh)); | |
1250 | nfsd4_init_cb(&cb_copy->cp_cb, cb_copy->cp_clp, | |
1251 | &nfsd4_cb_offload_ops, NFSPROC4_CLNT_CB_OFFLOAD); | |
1252 | nfsd4_run_cb(&cb_copy->cp_cb); | |
1253 | out: | |
1254 | cleanup_async_copy(copy); | |
1255 | return 0; | |
1256 | } | |
1257 | ||
29ae7f9d AS |
1258 | static __be32 |
1259 | nfsd4_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 1260 | union nfsd4_op_u *u) |
29ae7f9d | 1261 | { |
eb69853d | 1262 | struct nfsd4_copy *copy = &u->copy; |
29ae7f9d | 1263 | __be32 status; |
e0639dc5 | 1264 | struct nfsd4_copy *async_copy = NULL; |
29ae7f9d | 1265 | |
e0639dc5 OK |
1266 | status = nfsd4_verify_copy(rqstp, cstate, ©->cp_src_stateid, |
1267 | ©->file_src, ©->cp_dst_stateid, | |
1268 | ©->file_dst); | |
29ae7f9d AS |
1269 | if (status) |
1270 | goto out; | |
1271 | ||
e0639dc5 OK |
1272 | copy->cp_clp = cstate->clp; |
1273 | memcpy(©->fh, &cstate->current_fh.fh_handle, | |
1274 | sizeof(struct knfsd_fh)); | |
1275 | if (!copy->cp_synchronous) { | |
1276 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); | |
29ae7f9d | 1277 | |
e0639dc5 OK |
1278 | status = nfserrno(-ENOMEM); |
1279 | async_copy = kzalloc(sizeof(struct nfsd4_copy), GFP_KERNEL); | |
1280 | if (!async_copy) | |
1281 | goto out; | |
1282 | if (!nfs4_init_cp_state(nn, copy)) { | |
1283 | kfree(async_copy); | |
1284 | goto out; | |
1285 | } | |
1286 | refcount_set(&async_copy->refcount, 1); | |
1287 | memcpy(©->cp_res.cb_stateid, ©->cp_stateid, | |
1288 | sizeof(copy->cp_stateid)); | |
1289 | dup_copy_fields(copy, async_copy); | |
1290 | async_copy->copy_task = kthread_create(nfsd4_do_async_copy, | |
1291 | async_copy, "%s", "copy thread"); | |
1292 | if (IS_ERR(async_copy->copy_task)) | |
1293 | goto out_err; | |
1294 | spin_lock(&async_copy->cp_clp->async_lock); | |
1295 | list_add(&async_copy->copies, | |
1296 | &async_copy->cp_clp->async_copies); | |
1297 | spin_unlock(&async_copy->cp_clp->async_lock); | |
1298 | wake_up_process(async_copy->copy_task); | |
29ae7f9d | 1299 | status = nfs_ok; |
e0639dc5 OK |
1300 | } else |
1301 | status = nfsd4_do_copy(copy, 1); | |
29ae7f9d AS |
1302 | out: |
1303 | return status; | |
e0639dc5 OK |
1304 | out_err: |
1305 | cleanup_async_copy(async_copy); | |
1306 | goto out; | |
1307 | } | |
1308 | ||
1309 | struct nfsd4_copy * | |
1310 | find_async_copy(struct nfs4_client *clp, stateid_t *stateid) | |
1311 | { | |
1312 | struct nfsd4_copy *copy; | |
1313 | ||
1314 | spin_lock(&clp->async_lock); | |
1315 | list_for_each_entry(copy, &clp->async_copies, copies) { | |
1316 | if (memcmp(©->cp_stateid, stateid, NFS4_STATEID_SIZE)) | |
1317 | continue; | |
1318 | refcount_inc(©->refcount); | |
1319 | spin_unlock(&clp->async_lock); | |
1320 | return copy; | |
1321 | } | |
1322 | spin_unlock(&clp->async_lock); | |
1323 | return NULL; | |
29ae7f9d AS |
1324 | } |
1325 | ||
885e2bf3 OK |
1326 | static __be32 |
1327 | nfsd4_offload_cancel(struct svc_rqst *rqstp, | |
1328 | struct nfsd4_compound_state *cstate, | |
1329 | union nfsd4_op_u *u) | |
1330 | { | |
e0639dc5 OK |
1331 | struct nfsd4_offload_status *os = &u->offload_status; |
1332 | __be32 status = 0; | |
1333 | struct nfsd4_copy *copy; | |
1334 | struct nfs4_client *clp = cstate->clp; | |
1335 | ||
1336 | copy = find_async_copy(clp, &os->stateid); | |
1337 | if (copy) | |
1338 | nfsd4_stop_copy(copy); | |
1339 | else | |
1340 | status = nfserr_bad_stateid; | |
1341 | ||
1342 | return status; | |
885e2bf3 OK |
1343 | } |
1344 | ||
95d871f0 AS |
1345 | static __be32 |
1346 | nfsd4_fallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
1347 | struct nfsd4_fallocate *fallocate, int flags) | |
1348 | { | |
0d4d6720 | 1349 | __be32 status; |
95d871f0 AS |
1350 | struct file *file; |
1351 | ||
aa0d6aed | 1352 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, |
95d871f0 | 1353 | &fallocate->falloc_stateid, |
af90f707 | 1354 | WR_STATE, &file, NULL); |
95d871f0 AS |
1355 | if (status != nfs_ok) { |
1356 | dprintk("NFSD: nfsd4_fallocate: couldn't process stateid!\n"); | |
1357 | return status; | |
1358 | } | |
1359 | ||
1360 | status = nfsd4_vfs_fallocate(rqstp, &cstate->current_fh, file, | |
1361 | fallocate->falloc_offset, | |
1362 | fallocate->falloc_length, | |
1363 | flags); | |
1364 | fput(file); | |
1365 | return status; | |
1366 | } | |
6308bc98 OK |
1367 | static __be32 |
1368 | nfsd4_offload_status(struct svc_rqst *rqstp, | |
1369 | struct nfsd4_compound_state *cstate, | |
1370 | union nfsd4_op_u *u) | |
1371 | { | |
e0639dc5 OK |
1372 | struct nfsd4_offload_status *os = &u->offload_status; |
1373 | __be32 status = 0; | |
1374 | struct nfsd4_copy *copy; | |
1375 | struct nfs4_client *clp = cstate->clp; | |
1376 | ||
1377 | copy = find_async_copy(clp, &os->stateid); | |
1378 | if (copy) { | |
1379 | os->count = copy->cp_res.wr_bytes_written; | |
1380 | nfs4_put_copy(copy); | |
1381 | } else | |
1382 | status = nfserr_bad_stateid; | |
1383 | ||
1384 | return status; | |
6308bc98 | 1385 | } |
95d871f0 AS |
1386 | |
1387 | static __be32 | |
1388 | nfsd4_allocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 1389 | union nfsd4_op_u *u) |
95d871f0 | 1390 | { |
eb69853d | 1391 | return nfsd4_fallocate(rqstp, cstate, &u->allocate, 0); |
95d871f0 AS |
1392 | } |
1393 | ||
b0cb9085 AS |
1394 | static __be32 |
1395 | nfsd4_deallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 1396 | union nfsd4_op_u *u) |
b0cb9085 | 1397 | { |
eb69853d | 1398 | return nfsd4_fallocate(rqstp, cstate, &u->deallocate, |
b0cb9085 AS |
1399 | FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE); |
1400 | } | |
1401 | ||
24bab491 AS |
1402 | static __be32 |
1403 | nfsd4_seek(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 1404 | union nfsd4_op_u *u) |
24bab491 | 1405 | { |
eb69853d | 1406 | struct nfsd4_seek *seek = &u->seek; |
24bab491 AS |
1407 | int whence; |
1408 | __be32 status; | |
1409 | struct file *file; | |
1410 | ||
aa0d6aed | 1411 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, |
24bab491 | 1412 | &seek->seek_stateid, |
af90f707 | 1413 | RD_STATE, &file, NULL); |
24bab491 AS |
1414 | if (status) { |
1415 | dprintk("NFSD: nfsd4_seek: couldn't process stateid!\n"); | |
1416 | return status; | |
1417 | } | |
1418 | ||
1419 | switch (seek->seek_whence) { | |
1420 | case NFS4_CONTENT_DATA: | |
1421 | whence = SEEK_DATA; | |
1422 | break; | |
1423 | case NFS4_CONTENT_HOLE: | |
1424 | whence = SEEK_HOLE; | |
1425 | break; | |
1426 | default: | |
1427 | status = nfserr_union_notsupp; | |
1428 | goto out; | |
1429 | } | |
1430 | ||
1431 | /* | |
1432 | * Note: This call does change file->f_pos, but nothing in NFSD | |
1433 | * should ever file->f_pos. | |
1434 | */ | |
1435 | seek->seek_pos = vfs_llseek(file, seek->seek_offset, whence); | |
1436 | if (seek->seek_pos < 0) | |
1437 | status = nfserrno(seek->seek_pos); | |
1438 | else if (seek->seek_pos >= i_size_read(file_inode(file))) | |
1439 | seek->seek_eof = true; | |
1440 | ||
1441 | out: | |
1442 | fput(file); | |
1443 | return status; | |
1444 | } | |
1445 | ||
1da177e4 LT |
1446 | /* This routine never returns NFS_OK! If there are no other errors, it |
1447 | * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the | |
1448 | * attributes matched. VERIFY is implemented by mapping NFSERR_SAME | |
1449 | * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK. | |
1450 | */ | |
b37ad28b | 1451 | static __be32 |
c954e2a5 | 1452 | _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
ca364317 | 1453 | struct nfsd4_verify *verify) |
1da177e4 | 1454 | { |
2ebbc012 | 1455 | __be32 *buf, *p; |
1da177e4 | 1456 | int count; |
b37ad28b | 1457 | __be32 status; |
1da177e4 | 1458 | |
8837abca | 1459 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
1460 | if (status) |
1461 | return status; | |
1462 | ||
3c8e0316 YZ |
1463 | status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL); |
1464 | if (status) | |
1465 | return status; | |
1466 | ||
1da177e4 LT |
1467 | if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) |
1468 | || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) | |
1469 | return nfserr_inval; | |
1470 | if (verify->ve_attrlen & 3) | |
1471 | return nfserr_inval; | |
1472 | ||
1473 | /* count in words: | |
1474 | * bitmap_len(1) + bitmap(2) + attr_len(1) = 4 | |
1475 | */ | |
1476 | count = 4 + (verify->ve_attrlen >> 2); | |
1477 | buf = kmalloc(count << 2, GFP_KERNEL); | |
1478 | if (!buf) | |
3e772463 | 1479 | return nfserr_jukebox; |
1da177e4 | 1480 | |
84822d0b | 1481 | p = buf; |
d5184658 | 1482 | status = nfsd4_encode_fattr_to_buf(&p, count, &cstate->current_fh, |
ca364317 | 1483 | cstate->current_fh.fh_export, |
d5184658 BF |
1484 | cstate->current_fh.fh_dentry, |
1485 | verify->ve_bmval, | |
406a7ea9 | 1486 | rqstp, 0); |
41ae6e71 BF |
1487 | /* |
1488 | * If nfsd4_encode_fattr() ran out of space, assume that's because | |
1489 | * the attributes are longer (hence different) than those given: | |
1490 | */ | |
84822d0b | 1491 | if (status == nfserr_resource) |
1da177e4 LT |
1492 | status = nfserr_not_same; |
1493 | if (status) | |
1494 | goto out_kfree; | |
1495 | ||
95ec28cd BH |
1496 | /* skip bitmap */ |
1497 | p = buf + 1 + ntohl(buf[0]); | |
1da177e4 LT |
1498 | status = nfserr_not_same; |
1499 | if (ntohl(*p++) != verify->ve_attrlen) | |
1500 | goto out_kfree; | |
1501 | if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen)) | |
1502 | status = nfserr_same; | |
1503 | ||
1504 | out_kfree: | |
1505 | kfree(buf); | |
1506 | return status; | |
1507 | } | |
1508 | ||
c954e2a5 BF |
1509 | static __be32 |
1510 | nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 1511 | union nfsd4_op_u *u) |
c954e2a5 BF |
1512 | { |
1513 | __be32 status; | |
1514 | ||
eb69853d | 1515 | status = _nfsd4_verify(rqstp, cstate, &u->verify); |
c954e2a5 BF |
1516 | return status == nfserr_not_same ? nfs_ok : status; |
1517 | } | |
1518 | ||
1519 | static __be32 | |
1520 | nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 1521 | union nfsd4_op_u *u) |
c954e2a5 BF |
1522 | { |
1523 | __be32 status; | |
1524 | ||
eb69853d | 1525 | status = _nfsd4_verify(rqstp, cstate, &u->nverify); |
c954e2a5 BF |
1526 | return status == nfserr_same ? nfs_ok : status; |
1527 | } | |
1528 | ||
9cf514cc CH |
1529 | #ifdef CONFIG_NFSD_PNFS |
1530 | static const struct nfsd4_layout_ops * | |
1531 | nfsd4_layout_verify(struct svc_export *exp, unsigned int layout_type) | |
1532 | { | |
8a4c3926 | 1533 | if (!exp->ex_layout_types) { |
9cf514cc CH |
1534 | dprintk("%s: export does not support pNFS\n", __func__); |
1535 | return NULL; | |
1536 | } | |
1537 | ||
b550a32e AK |
1538 | if (layout_type >= LAYOUT_TYPE_MAX || |
1539 | !(exp->ex_layout_types & (1 << layout_type))) { | |
9cf514cc CH |
1540 | dprintk("%s: layout type %d not supported\n", |
1541 | __func__, layout_type); | |
1542 | return NULL; | |
1543 | } | |
1544 | ||
1545 | return nfsd4_layout_ops[layout_type]; | |
1546 | } | |
1547 | ||
1548 | static __be32 | |
1549 | nfsd4_getdeviceinfo(struct svc_rqst *rqstp, | |
eb69853d | 1550 | struct nfsd4_compound_state *cstate, union nfsd4_op_u *u) |
9cf514cc | 1551 | { |
eb69853d | 1552 | struct nfsd4_getdeviceinfo *gdp = &u->getdeviceinfo; |
9cf514cc CH |
1553 | const struct nfsd4_layout_ops *ops; |
1554 | struct nfsd4_deviceid_map *map; | |
1555 | struct svc_export *exp; | |
1556 | __be32 nfserr; | |
1557 | ||
1558 | dprintk("%s: layout_type %u dev_id [0x%llx:0x%x] maxcnt %u\n", | |
1559 | __func__, | |
1560 | gdp->gd_layout_type, | |
1561 | gdp->gd_devid.fsid_idx, gdp->gd_devid.generation, | |
1562 | gdp->gd_maxcount); | |
1563 | ||
1564 | map = nfsd4_find_devid_map(gdp->gd_devid.fsid_idx); | |
1565 | if (!map) { | |
1566 | dprintk("%s: couldn't find device ID to export mapping!\n", | |
1567 | __func__); | |
1568 | return nfserr_noent; | |
1569 | } | |
1570 | ||
1571 | exp = rqst_exp_find(rqstp, map->fsid_type, map->fsid); | |
1572 | if (IS_ERR(exp)) { | |
1573 | dprintk("%s: could not find device id\n", __func__); | |
1574 | return nfserr_noent; | |
1575 | } | |
1576 | ||
1577 | nfserr = nfserr_layoutunavailable; | |
1578 | ops = nfsd4_layout_verify(exp, gdp->gd_layout_type); | |
1579 | if (!ops) | |
1580 | goto out; | |
1581 | ||
1582 | nfserr = nfs_ok; | |
f99d4fbd CH |
1583 | if (gdp->gd_maxcount != 0) { |
1584 | nfserr = ops->proc_getdeviceinfo(exp->ex_path.mnt->mnt_sb, | |
d7c920d1 | 1585 | rqstp, cstate->session->se_client, gdp); |
f99d4fbd | 1586 | } |
9cf514cc CH |
1587 | |
1588 | gdp->gd_notify_types &= ops->notify_types; | |
9cf514cc | 1589 | out: |
a1420384 | 1590 | exp_put(exp); |
9cf514cc CH |
1591 | return nfserr; |
1592 | } | |
1593 | ||
34b1744c BF |
1594 | static void |
1595 | nfsd4_getdeviceinfo_release(union nfsd4_op_u *u) | |
1596 | { | |
1597 | kfree(u->getdeviceinfo.gd_device); | |
1598 | } | |
1599 | ||
9cf514cc CH |
1600 | static __be32 |
1601 | nfsd4_layoutget(struct svc_rqst *rqstp, | |
eb69853d | 1602 | struct nfsd4_compound_state *cstate, union nfsd4_op_u *u) |
9cf514cc | 1603 | { |
eb69853d | 1604 | struct nfsd4_layoutget *lgp = &u->layoutget; |
9cf514cc CH |
1605 | struct svc_fh *current_fh = &cstate->current_fh; |
1606 | const struct nfsd4_layout_ops *ops; | |
1607 | struct nfs4_layout_stateid *ls; | |
1608 | __be32 nfserr; | |
66282ec1 | 1609 | int accmode = NFSD_MAY_READ_IF_EXEC; |
9cf514cc CH |
1610 | |
1611 | switch (lgp->lg_seg.iomode) { | |
1612 | case IOMODE_READ: | |
66282ec1 | 1613 | accmode |= NFSD_MAY_READ; |
9cf514cc CH |
1614 | break; |
1615 | case IOMODE_RW: | |
66282ec1 | 1616 | accmode |= NFSD_MAY_READ | NFSD_MAY_WRITE; |
9cf514cc CH |
1617 | break; |
1618 | default: | |
1619 | dprintk("%s: invalid iomode %d\n", | |
1620 | __func__, lgp->lg_seg.iomode); | |
1621 | nfserr = nfserr_badiomode; | |
1622 | goto out; | |
1623 | } | |
1624 | ||
1625 | nfserr = fh_verify(rqstp, current_fh, 0, accmode); | |
1626 | if (nfserr) | |
1627 | goto out; | |
1628 | ||
1629 | nfserr = nfserr_layoutunavailable; | |
1630 | ops = nfsd4_layout_verify(current_fh->fh_export, lgp->lg_layout_type); | |
1631 | if (!ops) | |
1632 | goto out; | |
1633 | ||
1634 | /* | |
1635 | * Verify minlength and range as per RFC5661: | |
1636 | * o If loga_length is less than loga_minlength, | |
1637 | * the metadata server MUST return NFS4ERR_INVAL. | |
1638 | * o If the sum of loga_offset and loga_minlength exceeds | |
1639 | * NFS4_UINT64_MAX, and loga_minlength is not | |
1640 | * NFS4_UINT64_MAX, the error NFS4ERR_INVAL MUST result. | |
1641 | * o If the sum of loga_offset and loga_length exceeds | |
1642 | * NFS4_UINT64_MAX, and loga_length is not NFS4_UINT64_MAX, | |
1643 | * the error NFS4ERR_INVAL MUST result. | |
1644 | */ | |
1645 | nfserr = nfserr_inval; | |
1646 | if (lgp->lg_seg.length < lgp->lg_minlength || | |
1647 | (lgp->lg_minlength != NFS4_MAX_UINT64 && | |
1648 | lgp->lg_minlength > NFS4_MAX_UINT64 - lgp->lg_seg.offset) || | |
1649 | (lgp->lg_seg.length != NFS4_MAX_UINT64 && | |
1650 | lgp->lg_seg.length > NFS4_MAX_UINT64 - lgp->lg_seg.offset)) | |
1651 | goto out; | |
1652 | if (lgp->lg_seg.length == 0) | |
1653 | goto out; | |
1654 | ||
1655 | nfserr = nfsd4_preprocess_layout_stateid(rqstp, cstate, &lgp->lg_sid, | |
1656 | true, lgp->lg_layout_type, &ls); | |
31ef83dc | 1657 | if (nfserr) { |
f394b62b | 1658 | trace_nfsd_layout_get_lookup_fail(&lgp->lg_sid); |
9cf514cc | 1659 | goto out; |
31ef83dc | 1660 | } |
9cf514cc | 1661 | |
c5c707f9 CH |
1662 | nfserr = nfserr_recallconflict; |
1663 | if (atomic_read(&ls->ls_stid.sc_file->fi_lo_recalls)) | |
1664 | goto out_put_stid; | |
1665 | ||
2b0143b5 | 1666 | nfserr = ops->proc_layoutget(d_inode(current_fh->fh_dentry), |
9cf514cc CH |
1667 | current_fh, lgp); |
1668 | if (nfserr) | |
1669 | goto out_put_stid; | |
1670 | ||
1671 | nfserr = nfsd4_insert_layout(lgp, ls); | |
1672 | ||
1673 | out_put_stid: | |
cc8a5532 | 1674 | mutex_unlock(&ls->ls_mutex); |
9cf514cc CH |
1675 | nfs4_put_stid(&ls->ls_stid); |
1676 | out: | |
1677 | return nfserr; | |
1678 | } | |
1679 | ||
34b1744c BF |
1680 | static void |
1681 | nfsd4_layoutget_release(union nfsd4_op_u *u) | |
1682 | { | |
1683 | kfree(u->layoutget.lg_content); | |
1684 | } | |
1685 | ||
9cf514cc CH |
1686 | static __be32 |
1687 | nfsd4_layoutcommit(struct svc_rqst *rqstp, | |
eb69853d | 1688 | struct nfsd4_compound_state *cstate, union nfsd4_op_u *u) |
9cf514cc | 1689 | { |
eb69853d | 1690 | struct nfsd4_layoutcommit *lcp = &u->layoutcommit; |
9cf514cc CH |
1691 | const struct nfsd4_layout_seg *seg = &lcp->lc_seg; |
1692 | struct svc_fh *current_fh = &cstate->current_fh; | |
1693 | const struct nfsd4_layout_ops *ops; | |
1694 | loff_t new_size = lcp->lc_last_wr + 1; | |
1695 | struct inode *inode; | |
1696 | struct nfs4_layout_stateid *ls; | |
1697 | __be32 nfserr; | |
1698 | ||
1699 | nfserr = fh_verify(rqstp, current_fh, 0, NFSD_MAY_WRITE); | |
1700 | if (nfserr) | |
1701 | goto out; | |
1702 | ||
1703 | nfserr = nfserr_layoutunavailable; | |
1704 | ops = nfsd4_layout_verify(current_fh->fh_export, lcp->lc_layout_type); | |
1705 | if (!ops) | |
1706 | goto out; | |
2b0143b5 | 1707 | inode = d_inode(current_fh->fh_dentry); |
9cf514cc CH |
1708 | |
1709 | nfserr = nfserr_inval; | |
1710 | if (new_size <= seg->offset) { | |
1711 | dprintk("pnfsd: last write before layout segment\n"); | |
1712 | goto out; | |
1713 | } | |
1714 | if (new_size > seg->offset + seg->length) { | |
1715 | dprintk("pnfsd: last write beyond layout segment\n"); | |
1716 | goto out; | |
1717 | } | |
1718 | if (!lcp->lc_newoffset && new_size > i_size_read(inode)) { | |
1719 | dprintk("pnfsd: layoutcommit beyond EOF\n"); | |
1720 | goto out; | |
1721 | } | |
1722 | ||
1723 | nfserr = nfsd4_preprocess_layout_stateid(rqstp, cstate, &lcp->lc_sid, | |
1724 | false, lcp->lc_layout_type, | |
1725 | &ls); | |
1726 | if (nfserr) { | |
f394b62b | 1727 | trace_nfsd_layout_commit_lookup_fail(&lcp->lc_sid); |
9cf514cc CH |
1728 | /* fixup error code as per RFC5661 */ |
1729 | if (nfserr == nfserr_bad_stateid) | |
1730 | nfserr = nfserr_badlayout; | |
1731 | goto out; | |
1732 | } | |
1733 | ||
cc8a5532 JL |
1734 | /* LAYOUTCOMMIT does not require any serialization */ |
1735 | mutex_unlock(&ls->ls_mutex); | |
1736 | ||
9cf514cc CH |
1737 | if (new_size > i_size_read(inode)) { |
1738 | lcp->lc_size_chg = 1; | |
1739 | lcp->lc_newsize = new_size; | |
1740 | } else { | |
1741 | lcp->lc_size_chg = 0; | |
1742 | } | |
1743 | ||
d8398fc1 | 1744 | nfserr = ops->proc_layoutcommit(inode, lcp); |
9cf514cc CH |
1745 | nfs4_put_stid(&ls->ls_stid); |
1746 | out: | |
1747 | return nfserr; | |
1748 | } | |
1749 | ||
1750 | static __be32 | |
1751 | nfsd4_layoutreturn(struct svc_rqst *rqstp, | |
eb69853d | 1752 | struct nfsd4_compound_state *cstate, union nfsd4_op_u *u) |
9cf514cc | 1753 | { |
eb69853d | 1754 | struct nfsd4_layoutreturn *lrp = &u->layoutreturn; |
9cf514cc CH |
1755 | struct svc_fh *current_fh = &cstate->current_fh; |
1756 | __be32 nfserr; | |
1757 | ||
1758 | nfserr = fh_verify(rqstp, current_fh, 0, NFSD_MAY_NOP); | |
1759 | if (nfserr) | |
1760 | goto out; | |
1761 | ||
1762 | nfserr = nfserr_layoutunavailable; | |
1763 | if (!nfsd4_layout_verify(current_fh->fh_export, lrp->lr_layout_type)) | |
1764 | goto out; | |
1765 | ||
1766 | switch (lrp->lr_seg.iomode) { | |
1767 | case IOMODE_READ: | |
1768 | case IOMODE_RW: | |
1769 | case IOMODE_ANY: | |
1770 | break; | |
1771 | default: | |
1772 | dprintk("%s: invalid iomode %d\n", __func__, | |
1773 | lrp->lr_seg.iomode); | |
1774 | nfserr = nfserr_inval; | |
1775 | goto out; | |
1776 | } | |
1777 | ||
1778 | switch (lrp->lr_return_type) { | |
1779 | case RETURN_FILE: | |
1780 | nfserr = nfsd4_return_file_layouts(rqstp, cstate, lrp); | |
1781 | break; | |
1782 | case RETURN_FSID: | |
1783 | case RETURN_ALL: | |
1784 | nfserr = nfsd4_return_client_layouts(rqstp, cstate, lrp); | |
1785 | break; | |
1786 | default: | |
1787 | dprintk("%s: invalid return_type %d\n", __func__, | |
1788 | lrp->lr_return_type); | |
1789 | nfserr = nfserr_inval; | |
1790 | break; | |
1791 | } | |
1792 | out: | |
1793 | return nfserr; | |
1794 | } | |
1795 | #endif /* CONFIG_NFSD_PNFS */ | |
1796 | ||
1da177e4 LT |
1797 | /* |
1798 | * NULL call. | |
1799 | */ | |
7111c66e | 1800 | static __be32 |
a6beb732 | 1801 | nfsd4_proc_null(struct svc_rqst *rqstp) |
1da177e4 LT |
1802 | { |
1803 | return nfs_ok; | |
1804 | } | |
1805 | ||
e2b20950 SA |
1806 | static inline void nfsd4_increment_op_stats(u32 opnum) |
1807 | { | |
1808 | if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP) | |
1809 | nfsdstats.nfs4_opcount[opnum]++; | |
1810 | } | |
1811 | ||
bb2a8b0c | 1812 | static const struct nfsd4_operation nfsd4_ops[]; |
b591480b | 1813 | |
f1c7f79b | 1814 | static const char *nfsd4_op_name(unsigned opnum); |
b001a1b6 | 1815 | |
f9bb94c4 | 1816 | /* |
57716355 | 1817 | * Enforce NFSv4.1 COMPOUND ordering rules: |
f9bb94c4 | 1818 | * |
57716355 BF |
1819 | * Also note, enforced elsewhere: |
1820 | * - SEQUENCE other than as first op results in | |
1821 | * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().) | |
1d1bc8f2 BF |
1822 | * - BIND_CONN_TO_SESSION must be the only op in its compound. |
1823 | * (Enforced in nfsd4_bind_conn_to_session().) | |
57716355 BF |
1824 | * - DESTROY_SESSION must be the final operation in a compound, if |
1825 | * sessionid's in SEQUENCE and DESTROY_SESSION are the same. | |
1826 | * (Enforced in nfsd4_destroy_session().) | |
f9bb94c4 | 1827 | */ |
57716355 | 1828 | static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args) |
f9bb94c4 | 1829 | { |
7a04cfda | 1830 | struct nfsd4_op *first_op = &args->ops[0]; |
57716355 BF |
1831 | |
1832 | /* These ordering requirements don't apply to NFSv4.0: */ | |
1833 | if (args->minorversion == 0) | |
1834 | return nfs_ok; | |
1835 | /* This is weird, but OK, not our problem: */ | |
1836 | if (args->opcnt == 0) | |
1837 | return nfs_ok; | |
7a04cfda | 1838 | if (first_op->status == nfserr_op_illegal) |
57716355 | 1839 | return nfs_ok; |
7a04cfda | 1840 | if (!(nfsd4_ops[first_op->opnum].op_flags & ALLOWED_AS_FIRST_OP)) |
57716355 | 1841 | return nfserr_op_not_in_session; |
7a04cfda | 1842 | if (first_op->opnum == OP_SEQUENCE) |
57716355 | 1843 | return nfs_ok; |
7a04cfda BF |
1844 | /* |
1845 | * So first_op is something allowed outside a session, like | |
1846 | * EXCHANGE_ID; but then it has to be the only op in the | |
1847 | * compound: | |
1848 | */ | |
57716355 BF |
1849 | if (args->opcnt != 1) |
1850 | return nfserr_not_only_op; | |
1851 | return nfs_ok; | |
f9bb94c4 AA |
1852 | } |
1853 | ||
f4f9ef4a | 1854 | const struct nfsd4_operation *OPDESC(struct nfsd4_op *op) |
22b03214 BF |
1855 | { |
1856 | return &nfsd4_ops[op->opnum]; | |
1857 | } | |
1858 | ||
1091006c BF |
1859 | bool nfsd4_cache_this_op(struct nfsd4_op *op) |
1860 | { | |
e372ba60 BF |
1861 | if (op->opnum == OP_ILLEGAL) |
1862 | return false; | |
c856694e | 1863 | return OPDESC(op)->op_flags & OP_CACHEME; |
1091006c BF |
1864 | } |
1865 | ||
68d93184 BF |
1866 | static bool need_wrongsec_check(struct svc_rqst *rqstp) |
1867 | { | |
1868 | struct nfsd4_compoundres *resp = rqstp->rq_resp; | |
1869 | struct nfsd4_compoundargs *argp = rqstp->rq_argp; | |
1870 | struct nfsd4_op *this = &argp->ops[resp->opcnt - 1]; | |
1871 | struct nfsd4_op *next = &argp->ops[resp->opcnt]; | |
bb2a8b0c CH |
1872 | const struct nfsd4_operation *thisd = OPDESC(this); |
1873 | const struct nfsd4_operation *nextd; | |
68d93184 | 1874 | |
68d93184 BF |
1875 | /* |
1876 | * Most ops check wronsec on our own; only the putfh-like ops | |
1877 | * have special rules. | |
1878 | */ | |
1879 | if (!(thisd->op_flags & OP_IS_PUTFH_LIKE)) | |
1880 | return false; | |
1881 | /* | |
1882 | * rfc 5661 2.6.3.1.1.6: don't bother erroring out a | |
1883 | * put-filehandle operation if we're not going to use the | |
1884 | * result: | |
1885 | */ | |
1886 | if (argp->opcnt == resp->opcnt) | |
1887 | return false; | |
51904b08 BF |
1888 | if (next->opnum == OP_ILLEGAL) |
1889 | return false; | |
68d93184 BF |
1890 | nextd = OPDESC(next); |
1891 | /* | |
1892 | * Rest of 2.6.3.1.1: certain operations will return WRONGSEC | |
1893 | * errors themselves as necessary; others should check for them | |
1894 | * now: | |
1895 | */ | |
1896 | return !(nextd->op_flags & OP_HANDLES_WRONGSEC); | |
1897 | } | |
1898 | ||
2d124dfa BF |
1899 | static void svcxdr_init_encode(struct svc_rqst *rqstp, |
1900 | struct nfsd4_compoundres *resp) | |
1901 | { | |
1902 | struct xdr_stream *xdr = &resp->xdr; | |
1903 | struct xdr_buf *buf = &rqstp->rq_res; | |
1904 | struct kvec *head = buf->head; | |
1905 | ||
1906 | xdr->buf = buf; | |
ddd1ea56 | 1907 | xdr->iov = head; |
2d124dfa | 1908 | xdr->p = head->iov_base + head->iov_len; |
a5cddc88 | 1909 | xdr->end = head->iov_base + PAGE_SIZE - rqstp->rq_auth_slack; |
6ac90391 BF |
1910 | /* Tail and page_len should be zero at this point: */ |
1911 | buf->len = buf->head[0].iov_len; | |
2825a7f9 | 1912 | xdr->scratch.iov_len = 0; |
05638dc7 | 1913 | xdr->page_ptr = buf->pages - 1; |
2825a7f9 | 1914 | buf->buflen = PAGE_SIZE * (1 + rqstp->rq_page_end - buf->pages) |
a5cddc88 | 1915 | - rqstp->rq_auth_slack; |
2d124dfa BF |
1916 | } |
1917 | ||
1da177e4 LT |
1918 | /* |
1919 | * COMPOUND call. | |
1920 | */ | |
7111c66e | 1921 | static __be32 |
a6beb732 | 1922 | nfsd4_proc_compound(struct svc_rqst *rqstp) |
1da177e4 | 1923 | { |
a6beb732 CH |
1924 | struct nfsd4_compoundargs *args = rqstp->rq_argp; |
1925 | struct nfsd4_compoundres *resp = rqstp->rq_resp; | |
1da177e4 | 1926 | struct nfsd4_op *op; |
e354d571 | 1927 | struct nfsd4_compound_state *cstate = &resp->cstate; |
4daeed25 KM |
1928 | struct svc_fh *current_fh = &cstate->current_fh; |
1929 | struct svc_fh *save_fh = &cstate->save_fh; | |
e333f3bb | 1930 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
b37ad28b | 1931 | __be32 status; |
1da177e4 | 1932 | |
2d124dfa | 1933 | svcxdr_init_encode(rqstp, resp); |
4aea24b2 | 1934 | resp->tagp = resp->xdr.p; |
1da177e4 | 1935 | /* reserve space for: taglen, tag, and opcnt */ |
d3f627c8 | 1936 | xdr_reserve_space(&resp->xdr, 8 + args->taglen); |
1da177e4 LT |
1937 | resp->taglen = args->taglen; |
1938 | resp->tag = args->tag; | |
1da177e4 | 1939 | resp->rqstp = rqstp; |
4daeed25 | 1940 | cstate->minorversion = args->minorversion; |
4daeed25 KM |
1941 | fh_init(current_fh, NFS4_FHSIZE); |
1942 | fh_init(save_fh, NFS4_FHSIZE); | |
8ff30fa4 N |
1943 | /* |
1944 | * Don't use the deferral mechanism for NFSv4; compounds make it | |
1945 | * too hard to avoid non-idempotency problems. | |
1946 | */ | |
30660e04 | 1947 | clear_bit(RQ_USEDEFERRAL, &rqstp->rq_flags); |
1da177e4 LT |
1948 | |
1949 | /* | |
1950 | * According to RFC3010, this takes precedence over all other errors. | |
1951 | */ | |
1952 | status = nfserr_minor_vers_mismatch; | |
e333f3bb | 1953 | if (nfsd_minorversion(nn, args->minorversion, NFSD_TEST) <= 0) |
1da177e4 | 1954 | goto out; |
0078117c BF |
1955 | status = nfserr_resource; |
1956 | if (args->opcnt > NFSD_MAX_OPS_PER_COMPOUND) | |
1957 | goto out; | |
1da177e4 | 1958 | |
57716355 BF |
1959 | status = nfs41_check_op_ordering(args); |
1960 | if (status) { | |
f9bb94c4 | 1961 | op = &args->ops[0]; |
57716355 | 1962 | op->status = status; |
5b7b15ae | 1963 | resp->opcnt = 1; |
f9bb94c4 AA |
1964 | goto encode_op; |
1965 | } | |
1966 | ||
fff4080b | 1967 | trace_nfsd_compound(rqstp, args->opcnt); |
1da177e4 LT |
1968 | while (!status && resp->opcnt < args->opcnt) { |
1969 | op = &args->ops[resp->opcnt++]; | |
1970 | ||
1971 | /* | |
1972 | * The XDR decode routines may have pre-set op->status; | |
1973 | * for example, if there is a miscellaneous XDR error | |
1974 | * it will be set to nfserr_bad_xdr. | |
1975 | */ | |
9d313b17 BF |
1976 | if (op->status) { |
1977 | if (op->opnum == OP_OPEN) | |
1978 | op->status = nfsd4_open_omfg(rqstp, cstate, op); | |
1da177e4 | 1979 | goto encode_op; |
9d313b17 | 1980 | } |
1da177e4 | 1981 | |
4daeed25 | 1982 | if (!current_fh->fh_dentry) { |
f4f9ef4a | 1983 | if (!(op->opdesc->op_flags & ALLOWED_WITHOUT_FH)) { |
42ca0993 BF |
1984 | op->status = nfserr_nofilehandle; |
1985 | goto encode_op; | |
1986 | } | |
4daeed25 | 1987 | } else if (current_fh->fh_export->ex_fslocs.migrated && |
f4f9ef4a | 1988 | !(op->opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { |
42ca0993 | 1989 | op->status = nfserr_moved; |
1da177e4 LT |
1990 | goto encode_op; |
1991 | } | |
b591480b | 1992 | |
2336745e KM |
1993 | fh_clear_wcc(current_fh); |
1994 | ||
58e7b33a | 1995 | /* If op is non-idempotent */ |
f4f9ef4a | 1996 | if (op->opdesc->op_flags & OP_MODIFIES_SOMETHING) { |
4c69d585 | 1997 | /* |
a8095f7e BF |
1998 | * Don't execute this op if we couldn't encode a |
1999 | * succesful reply: | |
2000 | */ | |
f4f9ef4a | 2001 | u32 plen = op->opdesc->op_rsize_bop(rqstp, op); |
a8095f7e BF |
2002 | /* |
2003 | * Plus if there's another operation, make sure | |
4c69d585 BF |
2004 | * we'll have space to at least encode an error: |
2005 | */ | |
2006 | if (resp->opcnt < args->opcnt) | |
2007 | plen += COMPOUND_ERR_SLACK_SPACE; | |
58e7b33a MJ |
2008 | op->status = nfsd4_check_resp_size(resp, plen); |
2009 | } | |
2010 | ||
2011 | if (op->status) | |
2012 | goto encode_op; | |
2013 | ||
f4f9ef4a BF |
2014 | if (op->opdesc->op_get_currentstateid) |
2015 | op->opdesc->op_get_currentstateid(cstate, &op->u); | |
2016 | op->status = op->opdesc->op_func(rqstp, cstate, &op->u); | |
1da177e4 | 2017 | |
9a307403 BF |
2018 | /* Only from SEQUENCE */ |
2019 | if (cstate->status == nfserr_replay_cache) { | |
2020 | dprintk("%s NFS4.1 replay from cache\n", __func__); | |
2021 | status = op->status; | |
2022 | goto out; | |
2023 | } | |
8b70484c | 2024 | if (!op->status) { |
f4f9ef4a BF |
2025 | if (op->opdesc->op_set_currentstateid) |
2026 | op->opdesc->op_set_currentstateid(cstate, &op->u); | |
8b70484c | 2027 | |
f4f9ef4a | 2028 | if (op->opdesc->op_flags & OP_CLEAR_STATEID) |
37c593c5 | 2029 | clear_current_stateid(cstate); |
8b70484c TM |
2030 | |
2031 | if (need_wrongsec_check(rqstp)) | |
4daeed25 | 2032 | op->status = check_nfsd_access(current_fh->fh_export, rqstp); |
8b70484c | 2033 | } |
1da177e4 | 2034 | encode_op: |
a90b061c | 2035 | if (op->status == nfserr_replay_me) { |
a4f1706a | 2036 | op->replay = &cstate->replay_owner->so_replay; |
d0a381dd | 2037 | nfsd4_encode_replay(&resp->xdr, op); |
1da177e4 LT |
2038 | status = op->status = op->replay->rp_status; |
2039 | } else { | |
2040 | nfsd4_encode_operation(resp, op); | |
2041 | status = op->status; | |
2042 | } | |
0407717d | 2043 | |
fff4080b CL |
2044 | trace_nfsd_compound_status(args->opcnt, resp->opcnt, status, |
2045 | nfsd4_op_name(op->opnum)); | |
0407717d | 2046 | |
58fb12e6 | 2047 | nfsd4_cstate_clear_replay(cstate); |
e2b20950 | 2048 | nfsd4_increment_op_stats(op->opnum); |
1da177e4 LT |
2049 | } |
2050 | ||
4daeed25 KM |
2051 | cstate->status = status; |
2052 | fh_put(current_fh); | |
2053 | fh_put(save_fh); | |
2054 | BUG_ON(cstate->replay_owner); | |
1da177e4 | 2055 | out: |
2f425878 | 2056 | /* Reset deferral mechanism for RPC deferrals */ |
30660e04 | 2057 | set_bit(RQ_USEDEFERRAL, &rqstp->rq_flags); |
3b12cd98 | 2058 | dprintk("nfsv4 compound returned %d\n", ntohl(status)); |
1da177e4 LT |
2059 | return status; |
2060 | } | |
2061 | ||
58e7b33a MJ |
2062 | #define op_encode_hdr_size (2) |
2063 | #define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) | |
2064 | #define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) | |
2065 | #define op_encode_change_info_maxsz (5) | |
2066 | #define nfs4_fattr_bitmap_maxsz (4) | |
2067 | ||
8c7424cf BF |
2068 | /* We'll fall back on returning no lockowner if run out of space: */ |
2069 | #define op_encode_lockowner_maxsz (0) | |
58e7b33a MJ |
2070 | #define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz) |
2071 | ||
2072 | #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) | |
2073 | ||
2074 | #define op_encode_ace_maxsz (3 + nfs4_owner_maxsz) | |
2075 | #define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \ | |
2076 | op_encode_ace_maxsz) | |
2077 | ||
2078 | #define op_encode_channel_attrs_maxsz (6 + 1 + 1) | |
2079 | ||
2080 | static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2081 | { | |
2082 | return (op_encode_hdr_size) * sizeof(__be32); | |
2083 | } | |
2084 | ||
2085 | static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2086 | { | |
2087 | return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32); | |
2088 | } | |
2089 | ||
2282cd2c KM |
2090 | static inline u32 nfsd4_access_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2091 | { | |
2092 | /* ac_supported, ac_resp_access */ | |
2093 | return (op_encode_hdr_size + 2)* sizeof(__be32); | |
2094 | } | |
2095 | ||
58e7b33a MJ |
2096 | static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2097 | { | |
2098 | return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32); | |
2099 | } | |
2100 | ||
2101 | static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2102 | { | |
2103 | return (op_encode_hdr_size + op_encode_change_info_maxsz | |
2104 | + nfs4_fattr_bitmap_maxsz) * sizeof(__be32); | |
2105 | } | |
2106 | ||
b86cef60 BF |
2107 | /* |
2108 | * Note since this is an idempotent operation we won't insist on failing | |
2109 | * the op prematurely if the estimate is too large. We may turn off splice | |
2110 | * reads unnecessarily. | |
2111 | */ | |
2112 | static inline u32 nfsd4_getattr_rsize(struct svc_rqst *rqstp, | |
2113 | struct nfsd4_op *op) | |
2114 | { | |
2115 | u32 *bmap = op->u.getattr.ga_bmval; | |
2116 | u32 bmap0 = bmap[0], bmap1 = bmap[1], bmap2 = bmap[2]; | |
2117 | u32 ret = 0; | |
2118 | ||
2119 | if (bmap0 & FATTR4_WORD0_ACL) | |
2120 | return svc_max_payload(rqstp); | |
2121 | if (bmap0 & FATTR4_WORD0_FS_LOCATIONS) | |
2122 | return svc_max_payload(rqstp); | |
2123 | ||
2124 | if (bmap1 & FATTR4_WORD1_OWNER) { | |
2125 | ret += IDMAP_NAMESZ + 4; | |
2126 | bmap1 &= ~FATTR4_WORD1_OWNER; | |
2127 | } | |
2128 | if (bmap1 & FATTR4_WORD1_OWNER_GROUP) { | |
2129 | ret += IDMAP_NAMESZ + 4; | |
2130 | bmap1 &= ~FATTR4_WORD1_OWNER_GROUP; | |
2131 | } | |
2132 | if (bmap0 & FATTR4_WORD0_FILEHANDLE) { | |
2133 | ret += NFS4_FHSIZE + 4; | |
2134 | bmap0 &= ~FATTR4_WORD0_FILEHANDLE; | |
2135 | } | |
2136 | if (bmap2 & FATTR4_WORD2_SECURITY_LABEL) { | |
1ec8c0c4 | 2137 | ret += NFS4_MAXLABELLEN + 12; |
b86cef60 BF |
2138 | bmap2 &= ~FATTR4_WORD2_SECURITY_LABEL; |
2139 | } | |
2140 | /* | |
2141 | * Largest of remaining attributes are 16 bytes (e.g., | |
2142 | * supported_attributes) | |
2143 | */ | |
2144 | ret += 16 * (hweight32(bmap0) + hweight32(bmap1) + hweight32(bmap2)); | |
2145 | /* bitmask, length */ | |
2146 | ret += 20; | |
2147 | return ret; | |
2148 | } | |
2149 | ||
2282cd2c KM |
2150 | static inline u32 nfsd4_getfh_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2151 | { | |
2152 | return (op_encode_hdr_size + 1) * sizeof(__be32) + NFS4_FHSIZE; | |
2153 | } | |
2154 | ||
58e7b33a MJ |
2155 | static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2156 | { | |
2157 | return (op_encode_hdr_size + op_encode_change_info_maxsz) | |
2158 | * sizeof(__be32); | |
2159 | } | |
2160 | ||
2161 | static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2162 | { | |
2163 | return (op_encode_hdr_size + op_encode_lock_denied_maxsz) | |
2164 | * sizeof(__be32); | |
2165 | } | |
2166 | ||
2167 | static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2168 | { | |
2169 | return (op_encode_hdr_size + op_encode_stateid_maxsz | |
2170 | + op_encode_change_info_maxsz + 1 | |
2171 | + nfs4_fattr_bitmap_maxsz | |
2172 | + op_encode_delegation_maxsz) * sizeof(__be32); | |
2173 | } | |
2174 | ||
2175 | static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2176 | { | |
2177 | u32 maxcount = 0, rlen = 0; | |
2178 | ||
2179 | maxcount = svc_max_payload(rqstp); | |
3c7aa15d | 2180 | rlen = min(op->u.read.rd_length, maxcount); |
58e7b33a | 2181 | |
622f560e | 2182 | return (op_encode_hdr_size + 2 + XDR_QUADLEN(rlen)) * sizeof(__be32); |
58e7b33a MJ |
2183 | } |
2184 | ||
2185 | static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2186 | { | |
3c7aa15d | 2187 | u32 maxcount = 0, rlen = 0; |
58e7b33a | 2188 | |
3c7aa15d KM |
2189 | maxcount = svc_max_payload(rqstp); |
2190 | rlen = min(op->u.readdir.rd_maxcount, maxcount); | |
58e7b33a | 2191 | |
561f0ed4 BF |
2192 | return (op_encode_hdr_size + op_encode_verifier_maxsz + |
2193 | XDR_QUADLEN(rlen)) * sizeof(__be32); | |
58e7b33a MJ |
2194 | } |
2195 | ||
2282cd2c KM |
2196 | static inline u32 nfsd4_readlink_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2197 | { | |
2198 | return (op_encode_hdr_size + 1) * sizeof(__be32) + PAGE_SIZE; | |
2199 | } | |
2200 | ||
58e7b33a MJ |
2201 | static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2202 | { | |
2203 | return (op_encode_hdr_size + op_encode_change_info_maxsz) | |
2204 | * sizeof(__be32); | |
2205 | } | |
2206 | ||
2207 | static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2208 | { | |
2209 | return (op_encode_hdr_size + op_encode_change_info_maxsz | |
2210 | + op_encode_change_info_maxsz) * sizeof(__be32); | |
2211 | } | |
2212 | ||
ccae70a9 BF |
2213 | static inline u32 nfsd4_sequence_rsize(struct svc_rqst *rqstp, |
2214 | struct nfsd4_op *op) | |
2215 | { | |
d1d84c96 BF |
2216 | return (op_encode_hdr_size |
2217 | + XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) * sizeof(__be32); | |
ccae70a9 BF |
2218 | } |
2219 | ||
2282cd2c KM |
2220 | static inline u32 nfsd4_test_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2221 | { | |
2222 | return (op_encode_hdr_size + 1 + op->u.test_stateid.ts_num_ids) | |
2223 | * sizeof(__be32); | |
2224 | } | |
2225 | ||
58e7b33a MJ |
2226 | static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2227 | { | |
2228 | return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32); | |
2229 | } | |
2230 | ||
2282cd2c KM |
2231 | static inline u32 nfsd4_secinfo_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2232 | { | |
2233 | return (op_encode_hdr_size + RPC_AUTH_MAXFLAVOR * | |
2234 | (4 + XDR_QUADLEN(GSS_OID_MAX_LEN))) * sizeof(__be32); | |
2235 | } | |
2236 | ||
58e7b33a MJ |
2237 | static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2238 | { | |
480efaee BF |
2239 | return (op_encode_hdr_size + 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE)) * |
2240 | sizeof(__be32); | |
58e7b33a MJ |
2241 | } |
2242 | ||
2243 | static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2244 | { | |
f34e432b | 2245 | return (op_encode_hdr_size + 2 + op_encode_verifier_maxsz) * sizeof(__be32); |
58e7b33a MJ |
2246 | } |
2247 | ||
2248 | static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2249 | { | |
2250 | return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\ | |
a8bb84bc KM |
2251 | 1 + 1 + /* eir_flags, spr_how */\ |
2252 | 4 + /* spo_must_enforce & _allow with bitmap */\ | |
58e7b33a MJ |
2253 | 2 + /*eir_server_owner.so_minor_id */\ |
2254 | /* eir_server_owner.so_major_id<> */\ | |
2255 | XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\ | |
2256 | /* eir_server_scope<> */\ | |
2257 | XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\ | |
2258 | 1 + /* eir_server_impl_id array length */\ | |
2259 | 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32); | |
2260 | } | |
2261 | ||
2262 | static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2263 | { | |
2264 | return (op_encode_hdr_size + \ | |
2265 | XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\ | |
2266 | 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32); | |
2267 | } | |
2268 | ||
2269 | static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2270 | { | |
2271 | return (op_encode_hdr_size + \ | |
2272 | XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\ | |
2273 | 2 + /* csr_sequence, csr_flags */\ | |
2274 | op_encode_channel_attrs_maxsz + \ | |
2275 | op_encode_channel_attrs_maxsz) * sizeof(__be32); | |
2276 | } | |
2277 | ||
29ae7f9d AS |
2278 | static inline u32 nfsd4_copy_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2279 | { | |
2280 | return (op_encode_hdr_size + | |
2281 | 1 /* wr_callback */ + | |
2282 | op_encode_stateid_maxsz /* wr_callback */ + | |
2283 | 2 /* wr_count */ + | |
2284 | 1 /* wr_committed */ + | |
2285 | op_encode_verifier_maxsz + | |
2286 | 1 /* cr_consecutive */ + | |
2287 | 1 /* cr_synchronous */) * sizeof(__be32); | |
2288 | } | |
2289 | ||
6308bc98 OK |
2290 | static inline u32 nfsd4_offload_status_rsize(struct svc_rqst *rqstp, |
2291 | struct nfsd4_op *op) | |
2292 | { | |
2293 | return (op_encode_hdr_size + | |
2294 | 2 /* osr_count */ + | |
2295 | 1 /* osr_complete<1> optional 0 for now */) * sizeof(__be32); | |
2296 | } | |
2297 | ||
9cf514cc | 2298 | #ifdef CONFIG_NFSD_PNFS |
2282cd2c KM |
2299 | static inline u32 nfsd4_getdeviceinfo_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2300 | { | |
2301 | u32 maxcount = 0, rlen = 0; | |
2302 | ||
2303 | maxcount = svc_max_payload(rqstp); | |
2304 | rlen = min(op->u.getdeviceinfo.gd_maxcount, maxcount); | |
2305 | ||
2306 | return (op_encode_hdr_size + | |
2307 | 1 /* gd_layout_type*/ + | |
2308 | XDR_QUADLEN(rlen) + | |
2309 | 2 /* gd_notify_types */) * sizeof(__be32); | |
2310 | } | |
2311 | ||
9cf514cc CH |
2312 | /* |
2313 | * At this stage we don't really know what layout driver will handle the request, | |
2314 | * so we need to define an arbitrary upper bound here. | |
2315 | */ | |
2316 | #define MAX_LAYOUT_SIZE 128 | |
2317 | static inline u32 nfsd4_layoutget_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2318 | { | |
2319 | return (op_encode_hdr_size + | |
2320 | 1 /* logr_return_on_close */ + | |
2321 | op_encode_stateid_maxsz + | |
2322 | 1 /* nr of layouts */ + | |
2323 | MAX_LAYOUT_SIZE) * sizeof(__be32); | |
2324 | } | |
2325 | ||
2326 | static inline u32 nfsd4_layoutcommit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2327 | { | |
2328 | return (op_encode_hdr_size + | |
2329 | 1 /* locr_newsize */ + | |
2330 | 2 /* ns_size */) * sizeof(__be32); | |
2331 | } | |
2332 | ||
2333 | static inline u32 nfsd4_layoutreturn_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2334 | { | |
2335 | return (op_encode_hdr_size + | |
2336 | 1 /* lrs_stateid */ + | |
2337 | op_encode_stateid_maxsz) * sizeof(__be32); | |
2338 | } | |
2339 | #endif /* CONFIG_NFSD_PNFS */ | |
2340 | ||
2282cd2c KM |
2341 | |
2342 | static inline u32 nfsd4_seek_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2343 | { | |
2344 | return (op_encode_hdr_size + 3) * sizeof(__be32); | |
2345 | } | |
2346 | ||
bb2a8b0c | 2347 | static const struct nfsd4_operation nfsd4_ops[] = { |
b591480b | 2348 | [OP_ACCESS] = { |
eb69853d | 2349 | .op_func = nfsd4_access, |
b001a1b6 | 2350 | .op_name = "OP_ACCESS", |
1c122638 | 2351 | .op_rsize_bop = nfsd4_access_rsize, |
b591480b BF |
2352 | }, |
2353 | [OP_CLOSE] = { | |
eb69853d | 2354 | .op_func = nfsd4_close, |
58e7b33a | 2355 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 2356 | .op_name = "OP_CLOSE", |
1c122638 | 2357 | .op_rsize_bop = nfsd4_status_stateid_rsize, |
57832e7b | 2358 | .op_get_currentstateid = nfsd4_get_closestateid, |
b60e9859 | 2359 | .op_set_currentstateid = nfsd4_set_closestateid, |
b591480b BF |
2360 | }, |
2361 | [OP_COMMIT] = { | |
eb69853d | 2362 | .op_func = nfsd4_commit, |
58e7b33a | 2363 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 2364 | .op_name = "OP_COMMIT", |
1c122638 | 2365 | .op_rsize_bop = nfsd4_commit_rsize, |
b591480b BF |
2366 | }, |
2367 | [OP_CREATE] = { | |
eb69853d | 2368 | .op_func = nfsd4_create, |
d1471053 | 2369 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME | OP_CLEAR_STATEID, |
b001a1b6 | 2370 | .op_name = "OP_CREATE", |
1c122638 | 2371 | .op_rsize_bop = nfsd4_create_rsize, |
b591480b BF |
2372 | }, |
2373 | [OP_DELEGRETURN] = { | |
eb69853d | 2374 | .op_func = nfsd4_delegreturn, |
58e7b33a | 2375 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 2376 | .op_name = "OP_DELEGRETURN", |
58e7b33a | 2377 | .op_rsize_bop = nfsd4_only_status_rsize, |
57832e7b | 2378 | .op_get_currentstateid = nfsd4_get_delegreturnstateid, |
b591480b BF |
2379 | }, |
2380 | [OP_GETATTR] = { | |
eb69853d | 2381 | .op_func = nfsd4_getattr, |
eeac294e | 2382 | .op_flags = ALLOWED_ON_ABSENT_FS, |
b86cef60 | 2383 | .op_rsize_bop = nfsd4_getattr_rsize, |
b001a1b6 | 2384 | .op_name = "OP_GETATTR", |
b591480b BF |
2385 | }, |
2386 | [OP_GETFH] = { | |
eb69853d | 2387 | .op_func = nfsd4_getfh, |
b001a1b6 | 2388 | .op_name = "OP_GETFH", |
1c122638 | 2389 | .op_rsize_bop = nfsd4_getfh_rsize, |
b591480b BF |
2390 | }, |
2391 | [OP_LINK] = { | |
eb69853d | 2392 | .op_func = nfsd4_link, |
c856694e BF |
2393 | .op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING |
2394 | | OP_CACHEME, | |
b001a1b6 | 2395 | .op_name = "OP_LINK", |
1c122638 | 2396 | .op_rsize_bop = nfsd4_link_rsize, |
b591480b BF |
2397 | }, |
2398 | [OP_LOCK] = { | |
eb69853d | 2399 | .op_func = nfsd4_lock, |
b7571e4c BF |
2400 | .op_flags = OP_MODIFIES_SOMETHING | |
2401 | OP_NONTRIVIAL_ERROR_ENCODE, | |
b001a1b6 | 2402 | .op_name = "OP_LOCK", |
1c122638 | 2403 | .op_rsize_bop = nfsd4_lock_rsize, |
b60e9859 | 2404 | .op_set_currentstateid = nfsd4_set_lockstateid, |
b591480b BF |
2405 | }, |
2406 | [OP_LOCKT] = { | |
eb69853d | 2407 | .op_func = nfsd4_lockt, |
b7571e4c | 2408 | .op_flags = OP_NONTRIVIAL_ERROR_ENCODE, |
b001a1b6 | 2409 | .op_name = "OP_LOCKT", |
1c122638 | 2410 | .op_rsize_bop = nfsd4_lock_rsize, |
b591480b BF |
2411 | }, |
2412 | [OP_LOCKU] = { | |
eb69853d | 2413 | .op_func = nfsd4_locku, |
58e7b33a | 2414 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 2415 | .op_name = "OP_LOCKU", |
1c122638 | 2416 | .op_rsize_bop = nfsd4_status_stateid_rsize, |
57832e7b | 2417 | .op_get_currentstateid = nfsd4_get_lockustateid, |
b591480b BF |
2418 | }, |
2419 | [OP_LOOKUP] = { | |
eb69853d | 2420 | .op_func = nfsd4_lookup, |
d1471053 | 2421 | .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID, |
b001a1b6 | 2422 | .op_name = "OP_LOOKUP", |
1c122638 | 2423 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b BF |
2424 | }, |
2425 | [OP_LOOKUPP] = { | |
eb69853d | 2426 | .op_func = nfsd4_lookupp, |
d1471053 | 2427 | .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID, |
b001a1b6 | 2428 | .op_name = "OP_LOOKUPP", |
1c122638 | 2429 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b BF |
2430 | }, |
2431 | [OP_NVERIFY] = { | |
eb69853d | 2432 | .op_func = nfsd4_nverify, |
b001a1b6 | 2433 | .op_name = "OP_NVERIFY", |
1c122638 | 2434 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b BF |
2435 | }, |
2436 | [OP_OPEN] = { | |
eb69853d | 2437 | .op_func = nfsd4_open, |
58e7b33a | 2438 | .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING, |
b001a1b6 | 2439 | .op_name = "OP_OPEN", |
1c122638 | 2440 | .op_rsize_bop = nfsd4_open_rsize, |
b60e9859 | 2441 | .op_set_currentstateid = nfsd4_set_openstateid, |
b591480b BF |
2442 | }, |
2443 | [OP_OPEN_CONFIRM] = { | |
eb69853d | 2444 | .op_func = nfsd4_open_confirm, |
58e7b33a | 2445 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 2446 | .op_name = "OP_OPEN_CONFIRM", |
1c122638 | 2447 | .op_rsize_bop = nfsd4_status_stateid_rsize, |
b591480b BF |
2448 | }, |
2449 | [OP_OPEN_DOWNGRADE] = { | |
eb69853d | 2450 | .op_func = nfsd4_open_downgrade, |
58e7b33a | 2451 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 2452 | .op_name = "OP_OPEN_DOWNGRADE", |
1c122638 | 2453 | .op_rsize_bop = nfsd4_status_stateid_rsize, |
57832e7b | 2454 | .op_get_currentstateid = nfsd4_get_opendowngradestateid, |
b60e9859 | 2455 | .op_set_currentstateid = nfsd4_set_opendowngradestateid, |
b591480b BF |
2456 | }, |
2457 | [OP_PUTFH] = { | |
eb69853d | 2458 | .op_func = nfsd4_putfh, |
68d93184 | 2459 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
5b648699 | 2460 | | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID, |
b001a1b6 | 2461 | .op_name = "OP_PUTFH", |
1c122638 | 2462 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b | 2463 | }, |
eeac294e | 2464 | [OP_PUTPUBFH] = { |
eb69853d | 2465 | .op_func = nfsd4_putrootfh, |
68d93184 | 2466 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
5b648699 | 2467 | | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID, |
b001a1b6 | 2468 | .op_name = "OP_PUTPUBFH", |
1c122638 | 2469 | .op_rsize_bop = nfsd4_only_status_rsize, |
eeac294e | 2470 | }, |
b591480b | 2471 | [OP_PUTROOTFH] = { |
eb69853d | 2472 | .op_func = nfsd4_putrootfh, |
68d93184 | 2473 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
5b648699 | 2474 | | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID, |
b001a1b6 | 2475 | .op_name = "OP_PUTROOTFH", |
1c122638 | 2476 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b BF |
2477 | }, |
2478 | [OP_READ] = { | |
eb69853d | 2479 | .op_func = nfsd4_read, |
34b1744c | 2480 | .op_release = nfsd4_read_release, |
b001a1b6 | 2481 | .op_name = "OP_READ", |
1c122638 | 2482 | .op_rsize_bop = nfsd4_read_rsize, |
57832e7b | 2483 | .op_get_currentstateid = nfsd4_get_readstateid, |
b591480b BF |
2484 | }, |
2485 | [OP_READDIR] = { | |
eb69853d | 2486 | .op_func = nfsd4_readdir, |
b001a1b6 | 2487 | .op_name = "OP_READDIR", |
1c122638 | 2488 | .op_rsize_bop = nfsd4_readdir_rsize, |
b591480b BF |
2489 | }, |
2490 | [OP_READLINK] = { | |
eb69853d | 2491 | .op_func = nfsd4_readlink, |
b001a1b6 | 2492 | .op_name = "OP_READLINK", |
1c122638 | 2493 | .op_rsize_bop = nfsd4_readlink_rsize, |
b591480b BF |
2494 | }, |
2495 | [OP_REMOVE] = { | |
eb69853d | 2496 | .op_func = nfsd4_remove, |
c856694e | 2497 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
b001a1b6 | 2498 | .op_name = "OP_REMOVE", |
1c122638 | 2499 | .op_rsize_bop = nfsd4_remove_rsize, |
b591480b BF |
2500 | }, |
2501 | [OP_RENAME] = { | |
eb69853d | 2502 | .op_func = nfsd4_rename, |
c856694e | 2503 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
58e7b33a | 2504 | .op_name = "OP_RENAME", |
1c122638 | 2505 | .op_rsize_bop = nfsd4_rename_rsize, |
b591480b BF |
2506 | }, |
2507 | [OP_RENEW] = { | |
eb69853d | 2508 | .op_func = nfsd4_renew, |
58e7b33a MJ |
2509 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
2510 | | OP_MODIFIES_SOMETHING, | |
b001a1b6 | 2511 | .op_name = "OP_RENEW", |
1c122638 | 2512 | .op_rsize_bop = nfsd4_only_status_rsize, |
58e7b33a | 2513 | |
b591480b BF |
2514 | }, |
2515 | [OP_RESTOREFH] = { | |
eb69853d | 2516 | .op_func = nfsd4_restorefh, |
68d93184 | 2517 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
58e7b33a | 2518 | | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING, |
b001a1b6 | 2519 | .op_name = "OP_RESTOREFH", |
1c122638 | 2520 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b BF |
2521 | }, |
2522 | [OP_SAVEFH] = { | |
eb69853d | 2523 | .op_func = nfsd4_savefh, |
58e7b33a | 2524 | .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING, |
b001a1b6 | 2525 | .op_name = "OP_SAVEFH", |
1c122638 | 2526 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b | 2527 | }, |
dcb488a3 | 2528 | [OP_SECINFO] = { |
eb69853d | 2529 | .op_func = nfsd4_secinfo, |
34b1744c | 2530 | .op_release = nfsd4_secinfo_release, |
68d93184 | 2531 | .op_flags = OP_HANDLES_WRONGSEC, |
b001a1b6 | 2532 | .op_name = "OP_SECINFO", |
1c122638 | 2533 | .op_rsize_bop = nfsd4_secinfo_rsize, |
dcb488a3 | 2534 | }, |
b591480b | 2535 | [OP_SETATTR] = { |
eb69853d | 2536 | .op_func = nfsd4_setattr, |
b001a1b6 | 2537 | .op_name = "OP_SETATTR", |
b7571e4c BF |
2538 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME |
2539 | | OP_NONTRIVIAL_ERROR_ENCODE, | |
1c122638 | 2540 | .op_rsize_bop = nfsd4_setattr_rsize, |
57832e7b | 2541 | .op_get_currentstateid = nfsd4_get_setattrstateid, |
b591480b BF |
2542 | }, |
2543 | [OP_SETCLIENTID] = { | |
eb69853d | 2544 | .op_func = nfsd4_setclientid, |
58e7b33a | 2545 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
b7571e4c BF |
2546 | | OP_MODIFIES_SOMETHING | OP_CACHEME |
2547 | | OP_NONTRIVIAL_ERROR_ENCODE, | |
b001a1b6 | 2548 | .op_name = "OP_SETCLIENTID", |
1c122638 | 2549 | .op_rsize_bop = nfsd4_setclientid_rsize, |
b591480b BF |
2550 | }, |
2551 | [OP_SETCLIENTID_CONFIRM] = { | |
eb69853d | 2552 | .op_func = nfsd4_setclientid_confirm, |
58e7b33a | 2553 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
c856694e | 2554 | | OP_MODIFIES_SOMETHING | OP_CACHEME, |
b001a1b6 | 2555 | .op_name = "OP_SETCLIENTID_CONFIRM", |
1c122638 | 2556 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b BF |
2557 | }, |
2558 | [OP_VERIFY] = { | |
eb69853d | 2559 | .op_func = nfsd4_verify, |
b001a1b6 | 2560 | .op_name = "OP_VERIFY", |
1c122638 | 2561 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b BF |
2562 | }, |
2563 | [OP_WRITE] = { | |
eb69853d | 2564 | .op_func = nfsd4_write, |
c856694e | 2565 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
b001a1b6 | 2566 | .op_name = "OP_WRITE", |
1c122638 | 2567 | .op_rsize_bop = nfsd4_write_rsize, |
57832e7b | 2568 | .op_get_currentstateid = nfsd4_get_writestateid, |
b591480b BF |
2569 | }, |
2570 | [OP_RELEASE_LOCKOWNER] = { | |
eb69853d | 2571 | .op_func = nfsd4_release_lockowner, |
58e7b33a MJ |
2572 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
2573 | | OP_MODIFIES_SOMETHING, | |
b001a1b6 | 2574 | .op_name = "OP_RELEASE_LOCKOWNER", |
1c122638 | 2575 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b | 2576 | }, |
069b6ad4 AA |
2577 | |
2578 | /* NFSv4.1 operations */ | |
2579 | [OP_EXCHANGE_ID] = { | |
eb69853d | 2580 | .op_func = nfsd4_exchange_id, |
58e7b33a MJ |
2581 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
2582 | | OP_MODIFIES_SOMETHING, | |
069b6ad4 | 2583 | .op_name = "OP_EXCHANGE_ID", |
1c122638 | 2584 | .op_rsize_bop = nfsd4_exchange_id_rsize, |
069b6ad4 | 2585 | }, |
cb73a9f4 | 2586 | [OP_BACKCHANNEL_CTL] = { |
eb69853d | 2587 | .op_func = nfsd4_backchannel_ctl, |
cb73a9f4 BF |
2588 | .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, |
2589 | .op_name = "OP_BACKCHANNEL_CTL", | |
1c122638 | 2590 | .op_rsize_bop = nfsd4_only_status_rsize, |
cb73a9f4 | 2591 | }, |
1d1bc8f2 | 2592 | [OP_BIND_CONN_TO_SESSION] = { |
eb69853d | 2593 | .op_func = nfsd4_bind_conn_to_session, |
58e7b33a MJ |
2594 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
2595 | | OP_MODIFIES_SOMETHING, | |
1d1bc8f2 | 2596 | .op_name = "OP_BIND_CONN_TO_SESSION", |
1c122638 | 2597 | .op_rsize_bop = nfsd4_bind_conn_to_session_rsize, |
1d1bc8f2 | 2598 | }, |
069b6ad4 | 2599 | [OP_CREATE_SESSION] = { |
eb69853d | 2600 | .op_func = nfsd4_create_session, |
58e7b33a MJ |
2601 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
2602 | | OP_MODIFIES_SOMETHING, | |
069b6ad4 | 2603 | .op_name = "OP_CREATE_SESSION", |
1c122638 | 2604 | .op_rsize_bop = nfsd4_create_session_rsize, |
069b6ad4 AA |
2605 | }, |
2606 | [OP_DESTROY_SESSION] = { | |
eb69853d | 2607 | .op_func = nfsd4_destroy_session, |
58e7b33a MJ |
2608 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
2609 | | OP_MODIFIES_SOMETHING, | |
069b6ad4 | 2610 | .op_name = "OP_DESTROY_SESSION", |
1c122638 | 2611 | .op_rsize_bop = nfsd4_only_status_rsize, |
069b6ad4 AA |
2612 | }, |
2613 | [OP_SEQUENCE] = { | |
eb69853d | 2614 | .op_func = nfsd4_sequence, |
f9bb94c4 | 2615 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 | 2616 | .op_name = "OP_SEQUENCE", |
1c122638 | 2617 | .op_rsize_bop = nfsd4_sequence_rsize, |
069b6ad4 | 2618 | }, |
094b5d74 | 2619 | [OP_DESTROY_CLIENTID] = { |
eb69853d | 2620 | .op_func = nfsd4_destroy_clientid, |
58e7b33a MJ |
2621 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
2622 | | OP_MODIFIES_SOMETHING, | |
094b5d74 | 2623 | .op_name = "OP_DESTROY_CLIENTID", |
1c122638 | 2624 | .op_rsize_bop = nfsd4_only_status_rsize, |
094b5d74 | 2625 | }, |
4dc6ec00 | 2626 | [OP_RECLAIM_COMPLETE] = { |
eb69853d | 2627 | .op_func = nfsd4_reclaim_complete, |
58e7b33a | 2628 | .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, |
4dc6ec00 | 2629 | .op_name = "OP_RECLAIM_COMPLETE", |
1c122638 | 2630 | .op_rsize_bop = nfsd4_only_status_rsize, |
4dc6ec00 | 2631 | }, |
04f4ad16 | 2632 | [OP_SECINFO_NO_NAME] = { |
eb69853d | 2633 | .op_func = nfsd4_secinfo_no_name, |
ec572b9e | 2634 | .op_release = nfsd4_secinfo_no_name_release, |
68d93184 | 2635 | .op_flags = OP_HANDLES_WRONGSEC, |
04f4ad16 | 2636 | .op_name = "OP_SECINFO_NO_NAME", |
1c122638 | 2637 | .op_rsize_bop = nfsd4_secinfo_rsize, |
04f4ad16 | 2638 | }, |
17456804 | 2639 | [OP_TEST_STATEID] = { |
eb69853d | 2640 | .op_func = nfsd4_test_stateid, |
17456804 BS |
2641 | .op_flags = ALLOWED_WITHOUT_FH, |
2642 | .op_name = "OP_TEST_STATEID", | |
1c122638 | 2643 | .op_rsize_bop = nfsd4_test_stateid_rsize, |
17456804 | 2644 | }, |
e1ca12df | 2645 | [OP_FREE_STATEID] = { |
eb69853d | 2646 | .op_func = nfsd4_free_stateid, |
58e7b33a | 2647 | .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, |
e1ca12df | 2648 | .op_name = "OP_FREE_STATEID", |
57832e7b | 2649 | .op_get_currentstateid = nfsd4_get_freestateid, |
1c122638 | 2650 | .op_rsize_bop = nfsd4_only_status_rsize, |
e1ca12df | 2651 | }, |
9cf514cc CH |
2652 | #ifdef CONFIG_NFSD_PNFS |
2653 | [OP_GETDEVICEINFO] = { | |
eb69853d | 2654 | .op_func = nfsd4_getdeviceinfo, |
34b1744c | 2655 | .op_release = nfsd4_getdeviceinfo_release, |
9cf514cc CH |
2656 | .op_flags = ALLOWED_WITHOUT_FH, |
2657 | .op_name = "OP_GETDEVICEINFO", | |
1c122638 | 2658 | .op_rsize_bop = nfsd4_getdeviceinfo_rsize, |
9cf514cc CH |
2659 | }, |
2660 | [OP_LAYOUTGET] = { | |
eb69853d | 2661 | .op_func = nfsd4_layoutget, |
34b1744c | 2662 | .op_release = nfsd4_layoutget_release, |
9cf514cc CH |
2663 | .op_flags = OP_MODIFIES_SOMETHING, |
2664 | .op_name = "OP_LAYOUTGET", | |
1c122638 | 2665 | .op_rsize_bop = nfsd4_layoutget_rsize, |
9cf514cc CH |
2666 | }, |
2667 | [OP_LAYOUTCOMMIT] = { | |
eb69853d | 2668 | .op_func = nfsd4_layoutcommit, |
9cf514cc CH |
2669 | .op_flags = OP_MODIFIES_SOMETHING, |
2670 | .op_name = "OP_LAYOUTCOMMIT", | |
1c122638 | 2671 | .op_rsize_bop = nfsd4_layoutcommit_rsize, |
9cf514cc CH |
2672 | }, |
2673 | [OP_LAYOUTRETURN] = { | |
eb69853d | 2674 | .op_func = nfsd4_layoutreturn, |
9cf514cc CH |
2675 | .op_flags = OP_MODIFIES_SOMETHING, |
2676 | .op_name = "OP_LAYOUTRETURN", | |
1c122638 | 2677 | .op_rsize_bop = nfsd4_layoutreturn_rsize, |
9cf514cc CH |
2678 | }, |
2679 | #endif /* CONFIG_NFSD_PNFS */ | |
24bab491 AS |
2680 | |
2681 | /* NFSv4.2 operations */ | |
95d871f0 | 2682 | [OP_ALLOCATE] = { |
eb69853d | 2683 | .op_func = nfsd4_allocate, |
03b31f48 | 2684 | .op_flags = OP_MODIFIES_SOMETHING, |
95d871f0 | 2685 | .op_name = "OP_ALLOCATE", |
1c122638 | 2686 | .op_rsize_bop = nfsd4_only_status_rsize, |
95d871f0 | 2687 | }, |
b0cb9085 | 2688 | [OP_DEALLOCATE] = { |
eb69853d | 2689 | .op_func = nfsd4_deallocate, |
03b31f48 | 2690 | .op_flags = OP_MODIFIES_SOMETHING, |
b0cb9085 | 2691 | .op_name = "OP_DEALLOCATE", |
1c122638 | 2692 | .op_rsize_bop = nfsd4_only_status_rsize, |
b0cb9085 | 2693 | }, |
ffa0160a | 2694 | [OP_CLONE] = { |
eb69853d | 2695 | .op_func = nfsd4_clone, |
03b31f48 | 2696 | .op_flags = OP_MODIFIES_SOMETHING, |
ffa0160a | 2697 | .op_name = "OP_CLONE", |
1c122638 | 2698 | .op_rsize_bop = nfsd4_only_status_rsize, |
ffa0160a | 2699 | }, |
29ae7f9d | 2700 | [OP_COPY] = { |
eb69853d | 2701 | .op_func = nfsd4_copy, |
03b31f48 | 2702 | .op_flags = OP_MODIFIES_SOMETHING, |
29ae7f9d | 2703 | .op_name = "OP_COPY", |
1c122638 | 2704 | .op_rsize_bop = nfsd4_copy_rsize, |
29ae7f9d | 2705 | }, |
24bab491 | 2706 | [OP_SEEK] = { |
eb69853d | 2707 | .op_func = nfsd4_seek, |
24bab491 | 2708 | .op_name = "OP_SEEK", |
1c122638 | 2709 | .op_rsize_bop = nfsd4_seek_rsize, |
24bab491 | 2710 | }, |
6308bc98 OK |
2711 | [OP_OFFLOAD_STATUS] = { |
2712 | .op_func = nfsd4_offload_status, | |
2713 | .op_name = "OP_OFFLOAD_STATUS", | |
2714 | .op_rsize_bop = nfsd4_offload_status_rsize, | |
2715 | }, | |
885e2bf3 OK |
2716 | [OP_OFFLOAD_CANCEL] = { |
2717 | .op_func = nfsd4_offload_cancel, | |
2718 | .op_flags = OP_MODIFIES_SOMETHING, | |
2719 | .op_name = "OP_OFFLOAD_CANCEL", | |
2720 | .op_rsize_bop = nfsd4_only_status_rsize, | |
2721 | }, | |
b591480b BF |
2722 | }; |
2723 | ||
ed941643 AE |
2724 | /** |
2725 | * nfsd4_spo_must_allow - Determine if the compound op contains an | |
2726 | * operation that is allowed to be sent with machine credentials | |
2727 | * | |
2728 | * @rqstp: a pointer to the struct svc_rqst | |
2729 | * | |
2730 | * Checks to see if the compound contains a spo_must_allow op | |
2731 | * and confirms that it was sent with the proper machine creds. | |
2732 | */ | |
2733 | ||
2734 | bool nfsd4_spo_must_allow(struct svc_rqst *rqstp) | |
2735 | { | |
2736 | struct nfsd4_compoundres *resp = rqstp->rq_resp; | |
2737 | struct nfsd4_compoundargs *argp = rqstp->rq_argp; | |
2738 | struct nfsd4_op *this = &argp->ops[resp->opcnt - 1]; | |
2739 | struct nfsd4_compound_state *cstate = &resp->cstate; | |
2740 | struct nfs4_op_map *allow = &cstate->clp->cl_spo_must_allow; | |
2741 | u32 opiter; | |
2742 | ||
2743 | if (!cstate->minorversion) | |
2744 | return false; | |
2745 | ||
2746 | if (cstate->spo_must_allowed == true) | |
2747 | return true; | |
2748 | ||
2749 | opiter = resp->opcnt; | |
2750 | while (opiter < argp->opcnt) { | |
2751 | this = &argp->ops[opiter++]; | |
2752 | if (test_bit(this->opnum, allow->u.longs) && | |
2753 | cstate->clp->cl_mach_cred && | |
2754 | nfsd4_mach_creds_match(cstate->clp, rqstp)) { | |
2755 | cstate->spo_must_allowed = true; | |
2756 | return true; | |
2757 | } | |
2758 | } | |
2759 | cstate->spo_must_allowed = false; | |
2760 | return false; | |
2761 | } | |
2762 | ||
4f0cefbf BF |
2763 | int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2764 | { | |
05b7278d | 2765 | if (op->opnum == OP_ILLEGAL || op->status == nfserr_notsupp) |
4f0cefbf | 2766 | return op_encode_hdr_size * sizeof(__be32); |
2282cd2c KM |
2767 | |
2768 | BUG_ON(OPDESC(op)->op_rsize_bop == NULL); | |
2769 | return OPDESC(op)->op_rsize_bop(rqstp, op); | |
4f0cefbf BF |
2770 | } |
2771 | ||
07d1f802 BF |
2772 | void warn_on_nonidempotent_op(struct nfsd4_op *op) |
2773 | { | |
2774 | if (OPDESC(op)->op_flags & OP_MODIFIES_SOMETHING) { | |
2775 | pr_err("unable to encode reply to nonidempotent op %d (%s)\n", | |
2776 | op->opnum, nfsd4_op_name(op->opnum)); | |
2777 | WARN_ON_ONCE(1); | |
2778 | } | |
2779 | } | |
2780 | ||
f1c7f79b | 2781 | static const char *nfsd4_op_name(unsigned opnum) |
b001a1b6 BH |
2782 | { |
2783 | if (opnum < ARRAY_SIZE(nfsd4_ops)) | |
2784 | return nfsd4_ops[opnum].op_name; | |
2785 | return "unknown_operation"; | |
2786 | } | |
2787 | ||
1da177e4 | 2788 | #define nfsd4_voidres nfsd4_voidargs |
1da177e4 LT |
2789 | struct nfsd4_voidargs { int dummy; }; |
2790 | ||
860bda29 | 2791 | static const struct svc_procedure nfsd_procedures4[2] = { |
0a93a47f | 2792 | [NFSPROC4_NULL] = { |
f7235b6b | 2793 | .pc_func = nfsd4_proc_null, |
63f8de37 | 2794 | .pc_encode = nfs4svc_encode_voidres, |
0a93a47f YZ |
2795 | .pc_argsize = sizeof(struct nfsd4_voidargs), |
2796 | .pc_ressize = sizeof(struct nfsd4_voidres), | |
2797 | .pc_cachetype = RC_NOCACHE, | |
2798 | .pc_xdrressize = 1, | |
2799 | }, | |
2800 | [NFSPROC4_COMPOUND] = { | |
f7235b6b | 2801 | .pc_func = nfsd4_proc_compound, |
026fec7e | 2802 | .pc_decode = nfs4svc_decode_compoundargs, |
63f8de37 | 2803 | .pc_encode = nfs4svc_encode_compoundres, |
0a93a47f YZ |
2804 | .pc_argsize = sizeof(struct nfsd4_compoundargs), |
2805 | .pc_ressize = sizeof(struct nfsd4_compoundres), | |
3e98abff | 2806 | .pc_release = nfsd4_release_compoundargs, |
0a93a47f YZ |
2807 | .pc_cachetype = RC_NOCACHE, |
2808 | .pc_xdrressize = NFSD_BUFSIZE/4, | |
2809 | }, | |
1da177e4 LT |
2810 | }; |
2811 | ||
7fd38af9 | 2812 | static unsigned int nfsd_count3[ARRAY_SIZE(nfsd_procedures4)]; |
e9679189 | 2813 | const struct svc_version nfsd_version4 = { |
5283b03e JL |
2814 | .vs_vers = 4, |
2815 | .vs_nproc = 2, | |
2816 | .vs_proc = nfsd_procedures4, | |
7fd38af9 | 2817 | .vs_count = nfsd_count3, |
5283b03e JL |
2818 | .vs_dispatch = nfsd_dispatch, |
2819 | .vs_xdrsize = NFS4_SVC_XDRSIZE, | |
2820 | .vs_rpcb_optnl = true, | |
2821 | .vs_need_cong_ctrl = true, | |
1da177e4 LT |
2822 | }; |
2823 | ||
2824 | /* | |
2825 | * Local variables: | |
2826 | * c-basic-offset: 8 | |
2827 | * End: | |
2828 | */ |