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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> |
624322f1 | 40 | #include <linux/sunrpc/addr.h> |
0cfcd405 | 41 | #include <linux/nfs_ssc.h> |
1da177e4 | 42 | |
58e7b33a | 43 | #include "idmap.h" |
9a74af21 BH |
44 | #include "cache.h" |
45 | #include "xdr4.h" | |
0a3adade | 46 | #include "vfs.h" |
8b70484c | 47 | #include "current_stateid.h" |
3320fef1 | 48 | #include "netns.h" |
4ac7249e | 49 | #include "acl.h" |
9cf514cc | 50 | #include "pnfs.h" |
31ef83dc | 51 | #include "trace.h" |
1da177e4 | 52 | |
d6c9e436 CL |
53 | static bool inter_copy_offload_enable; |
54 | module_param(inter_copy_offload_enable, bool, 0644); | |
55 | MODULE_PARM_DESC(inter_copy_offload_enable, | |
56 | "Enable inter server to server copy offload. Default: false"); | |
57 | ||
f4e44b39 DN |
58 | #ifdef CONFIG_NFSD_V4_2_INTER_SSC |
59 | static int nfsd4_ssc_umount_timeout = 900000; /* default to 15 mins */ | |
60 | module_param(nfsd4_ssc_umount_timeout, int, 0644); | |
61 | MODULE_PARM_DESC(nfsd4_ssc_umount_timeout, | |
62 | "idle msecs before unmount export from source server"); | |
63 | #endif | |
64 | ||
18032ca0 DQ |
65 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
66 | #include <linux/security.h> | |
67 | ||
68 | static inline void | |
69 | nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval) | |
70 | { | |
2b0143b5 | 71 | struct inode *inode = d_inode(resfh->fh_dentry); |
18032ca0 DQ |
72 | int status; |
73 | ||
5955102c | 74 | inode_lock(inode); |
18032ca0 DQ |
75 | status = security_inode_setsecctx(resfh->fh_dentry, |
76 | label->data, label->len); | |
5955102c | 77 | inode_unlock(inode); |
18032ca0 DQ |
78 | |
79 | if (status) | |
80 | /* | |
81 | * XXX: We should really fail the whole open, but we may | |
82 | * already have created a new file, so it may be too | |
83 | * late. For now this seems the least of evils: | |
84 | */ | |
85 | bmval[2] &= ~FATTR4_WORD2_SECURITY_LABEL; | |
86 | ||
87 | return; | |
88 | } | |
89 | #else | |
90 | static inline void | |
91 | nfsd4_security_inode_setsecctx(struct svc_fh *resfh, struct xdr_netobj *label, u32 *bmval) | |
92 | { } | |
93 | #endif | |
94 | ||
1da177e4 LT |
95 | #define NFSDDBG_FACILITY NFSDDBG_PROC |
96 | ||
3c8e0316 YZ |
97 | static u32 nfsd_attrmask[] = { |
98 | NFSD_WRITEABLE_ATTRS_WORD0, | |
99 | NFSD_WRITEABLE_ATTRS_WORD1, | |
100 | NFSD_WRITEABLE_ATTRS_WORD2 | |
101 | }; | |
102 | ||
103 | static u32 nfsd41_ex_attrmask[] = { | |
104 | NFSD_SUPPATTR_EXCLCREAT_WORD0, | |
105 | NFSD_SUPPATTR_EXCLCREAT_WORD1, | |
106 | NFSD_SUPPATTR_EXCLCREAT_WORD2 | |
107 | }; | |
108 | ||
109 | static __be32 | |
110 | check_attr_support(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
111 | u32 *bmval, u32 *writable) | |
112 | { | |
113 | struct dentry *dentry = cstate->current_fh.fh_dentry; | |
32ddd944 | 114 | struct svc_export *exp = cstate->current_fh.fh_export; |
3c8e0316 | 115 | |
916d2d84 | 116 | if (!nfsd_attrs_supported(cstate->minorversion, bmval)) |
3c8e0316 | 117 | return nfserr_attrnotsupp; |
916d2d84 BF |
118 | if ((bmval[0] & FATTR4_WORD0_ACL) && !IS_POSIXACL(d_inode(dentry))) |
119 | return nfserr_attrnotsupp; | |
32ddd944 BF |
120 | if ((bmval[2] & FATTR4_WORD2_SECURITY_LABEL) && |
121 | !(exp->ex_flags & NFSEXP_SECURITY_LABEL)) | |
122 | return nfserr_attrnotsupp; | |
916d2d84 BF |
123 | if (writable && !bmval_is_subset(bmval, writable)) |
124 | return nfserr_inval; | |
47057abd AG |
125 | if (writable && (bmval[2] & FATTR4_WORD2_MODE_UMASK) && |
126 | (bmval[1] & FATTR4_WORD1_MODE)) | |
127 | return nfserr_inval; | |
3c8e0316 YZ |
128 | return nfs_ok; |
129 | } | |
130 | ||
131 | static __be32 | |
132 | nfsd4_check_open_attributes(struct svc_rqst *rqstp, | |
133 | struct nfsd4_compound_state *cstate, struct nfsd4_open *open) | |
134 | { | |
135 | __be32 status = nfs_ok; | |
136 | ||
137 | if (open->op_create == NFS4_OPEN_CREATE) { | |
138 | if (open->op_createmode == NFS4_CREATE_UNCHECKED | |
139 | || open->op_createmode == NFS4_CREATE_GUARDED) | |
140 | status = check_attr_support(rqstp, cstate, | |
141 | open->op_bmval, nfsd_attrmask); | |
142 | else if (open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1) | |
143 | status = check_attr_support(rqstp, cstate, | |
144 | open->op_bmval, nfsd41_ex_attrmask); | |
145 | } | |
146 | ||
147 | return status; | |
148 | } | |
149 | ||
9208faf2 YZ |
150 | static int |
151 | is_create_with_attrs(struct nfsd4_open *open) | |
152 | { | |
153 | return open->op_create == NFS4_OPEN_CREATE | |
154 | && (open->op_createmode == NFS4_CREATE_UNCHECKED | |
155 | || open->op_createmode == NFS4_CREATE_GUARDED | |
156 | || open->op_createmode == NFS4_CREATE_EXCLUSIVE4_1); | |
157 | } | |
158 | ||
159 | /* | |
160 | * if error occurs when setting the acl, just clear the acl bit | |
161 | * in the returned attr bitmap. | |
162 | */ | |
163 | static void | |
164 | do_set_nfs4_acl(struct svc_rqst *rqstp, struct svc_fh *fhp, | |
165 | struct nfs4_acl *acl, u32 *bmval) | |
166 | { | |
167 | __be32 status; | |
168 | ||
169 | status = nfsd4_set_nfs4_acl(rqstp, fhp, acl); | |
170 | if (status) | |
171 | /* | |
172 | * We should probably fail the whole open at this point, | |
173 | * but we've already created the file, so it's too late; | |
174 | * So this seems the least of evils: | |
175 | */ | |
176 | bmval[0] &= ~FATTR4_WORD0_ACL; | |
177 | } | |
178 | ||
1da177e4 LT |
179 | static inline void |
180 | fh_dup2(struct svc_fh *dst, struct svc_fh *src) | |
181 | { | |
182 | fh_put(dst); | |
183 | dget(src->fh_dentry); | |
184 | if (src->fh_export) | |
bf18f163 | 185 | exp_get(src->fh_export); |
1da177e4 LT |
186 | *dst = *src; |
187 | } | |
188 | ||
b37ad28b | 189 | static __be32 |
dc730e17 | 190 | do_open_permission(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, int accmode) |
1da177e4 | 191 | { |
b37ad28b | 192 | __be32 status; |
1da177e4 LT |
193 | |
194 | if (open->op_truncate && | |
195 | !(open->op_share_access & NFS4_SHARE_ACCESS_WRITE)) | |
196 | return nfserr_inval; | |
197 | ||
a043226b BF |
198 | accmode |= NFSD_MAY_READ_IF_EXEC; |
199 | ||
1da177e4 | 200 | if (open->op_share_access & NFS4_SHARE_ACCESS_READ) |
8837abca | 201 | accmode |= NFSD_MAY_READ; |
9801d8a3 | 202 | if (open->op_share_access & NFS4_SHARE_ACCESS_WRITE) |
8837abca | 203 | accmode |= (NFSD_MAY_WRITE | NFSD_MAY_TRUNC); |
57ecb34f | 204 | if (open->op_share_deny & NFS4_SHARE_DENY_READ) |
8837abca | 205 | accmode |= NFSD_MAY_WRITE; |
1da177e4 LT |
206 | |
207 | status = fh_verify(rqstp, current_fh, S_IFREG, accmode); | |
208 | ||
209 | return status; | |
210 | } | |
211 | ||
aadab6c6 BF |
212 | static __be32 nfsd_check_obj_isreg(struct svc_fh *fh) |
213 | { | |
2b0143b5 | 214 | umode_t mode = d_inode(fh->fh_dentry)->i_mode; |
aadab6c6 BF |
215 | |
216 | if (S_ISREG(mode)) | |
217 | return nfs_ok; | |
218 | if (S_ISDIR(mode)) | |
219 | return nfserr_isdir; | |
220 | /* | |
221 | * Using err_symlink as our catch-all case may look odd; but | |
222 | * there's no other obvious error for this case in 4.0, and we | |
223 | * happen to know that it will cause the linux v4 client to do | |
224 | * the right thing on attempts to open something other than a | |
225 | * regular file. | |
226 | */ | |
227 | return nfserr_symlink; | |
228 | } | |
229 | ||
bbc9c36c BF |
230 | static void nfsd4_set_open_owner_reply_cache(struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh *resfh) |
231 | { | |
232 | if (nfsd4_has_session(cstate)) | |
233 | return; | |
234 | fh_copy_shallow(&open->op_openowner->oo_owner.so_replay.rp_openfh, | |
235 | &resfh->fh_handle); | |
236 | } | |
237 | ||
b37ad28b | 238 | static __be32 |
c0e6bee4 | 239 | do_open_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open, struct svc_fh **resfh) |
1da177e4 | 240 | { |
bbc9c36c | 241 | struct svc_fh *current_fh = &cstate->current_fh; |
7007c90f | 242 | int accmode; |
b37ad28b | 243 | __be32 status; |
1da177e4 | 244 | |
c0e6bee4 BF |
245 | *resfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); |
246 | if (!*resfh) | |
59deeb9e | 247 | return nfserr_jukebox; |
c0e6bee4 | 248 | fh_init(*resfh, NFS4_FHSIZE); |
500c2481 | 249 | open->op_truncate = false; |
1da177e4 LT |
250 | |
251 | if (open->op_create) { | |
79fb54ab BH |
252 | /* FIXME: check session persistence and pnfs flags. |
253 | * The nfsv4.1 spec requires the following semantics: | |
254 | * | |
255 | * Persistent | pNFS | Server REQUIRED | Client Allowed | |
256 | * Reply Cache | server | | | |
257 | * -------------+--------+-----------------+-------------------- | |
258 | * no | no | EXCLUSIVE4_1 | EXCLUSIVE4_1 | |
259 | * | | | (SHOULD) | |
260 | * | | and EXCLUSIVE4 | or EXCLUSIVE4 | |
261 | * | | | (SHOULD NOT) | |
262 | * no | yes | EXCLUSIVE4_1 | EXCLUSIVE4_1 | |
263 | * yes | no | GUARDED4 | GUARDED4 | |
264 | * yes | yes | GUARDED4 | GUARDED4 | |
265 | */ | |
266 | ||
1da177e4 LT |
267 | /* |
268 | * Note: create modes (UNCHECKED,GUARDED...) are the same | |
ac6721a1 | 269 | * in NFSv4 as in v3 except EXCLUSIVE4_1. |
1da177e4 | 270 | */ |
880a3a53 | 271 | current->fs->umask = open->op_umask; |
1708e50b CL |
272 | status = do_nfsd_create(rqstp, current_fh, open->op_fname, |
273 | open->op_fnamelen, &open->op_iattr, | |
c0e6bee4 | 274 | *resfh, open->op_createmode, |
749997e5 | 275 | (u32 *)open->op_verf.data, |
856121b2 | 276 | &open->op_truncate, &open->op_created); |
880a3a53 | 277 | current->fs->umask = 0; |
749997e5 | 278 | |
18032ca0 | 279 | if (!status && open->op_label.len) |
c0e6bee4 | 280 | nfsd4_security_inode_setsecctx(*resfh, &open->op_label, open->op_bmval); |
18032ca0 | 281 | |
99f88726 | 282 | /* |
ead8fb8c KM |
283 | * Following rfc 3530 14.2.16, and rfc 5661 18.16.4 |
284 | * use the returned bitmask to indicate which attributes | |
285 | * we used to store the verifier: | |
749997e5 | 286 | */ |
ead8fb8c KM |
287 | if (nfsd_create_is_exclusive(open->op_createmode) && status == 0) |
288 | open->op_bmval[1] |= (FATTR4_WORD1_TIME_ACCESS | | |
289 | FATTR4_WORD1_TIME_MODIFY); | |
4335723e BF |
290 | } else |
291 | /* | |
292 | * Note this may exit with the parent still locked. | |
293 | * We will hold the lock until nfsd4_open's final | |
294 | * lookup, to prevent renames or unlinks until we've had | |
295 | * a chance to an acquire a delegation if appropriate. | |
296 | */ | |
1da177e4 | 297 | status = nfsd_lookup(rqstp, current_fh, |
1708e50b | 298 | open->op_fname, open->op_fnamelen, *resfh); |
9dc4e6c4 BF |
299 | if (status) |
300 | goto out; | |
c0e6bee4 | 301 | status = nfsd_check_obj_isreg(*resfh); |
af85852d BF |
302 | if (status) |
303 | goto out; | |
1da177e4 | 304 | |
9208faf2 | 305 | if (is_create_with_attrs(open) && open->op_acl != NULL) |
c0e6bee4 | 306 | do_set_nfs4_acl(rqstp, *resfh, open->op_acl, open->op_bmval); |
9208faf2 | 307 | |
c0e6bee4 | 308 | nfsd4_set_open_owner_reply_cache(cstate, open, *resfh); |
7007c90f | 309 | accmode = NFSD_MAY_NOP; |
89f6c336 BF |
310 | if (open->op_created || |
311 | open->op_claim_type == NFS4_OPEN_CLAIM_DELEGATE_CUR) | |
7007c90f | 312 | accmode |= NFSD_MAY_OWNER_OVERRIDE; |
c0e6bee4 | 313 | status = do_open_permission(rqstp, *resfh, open, accmode); |
41fd1e42 | 314 | set_change_info(&open->op_cinfo, current_fh); |
af85852d | 315 | out: |
1da177e4 LT |
316 | return status; |
317 | } | |
318 | ||
b37ad28b | 319 | static __be32 |
bbc9c36c | 320 | do_open_fhandle(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_open *open) |
1da177e4 | 321 | { |
bbc9c36c | 322 | struct svc_fh *current_fh = &cstate->current_fh; |
b37ad28b | 323 | __be32 status; |
9f415eb2 | 324 | int accmode = 0; |
1da177e4 | 325 | |
1da177e4 LT |
326 | /* We don't know the target directory, and therefore can not |
327 | * set the change info | |
328 | */ | |
329 | ||
330 | memset(&open->op_cinfo, 0, sizeof(struct nfsd4_change_info)); | |
331 | ||
bbc9c36c | 332 | nfsd4_set_open_owner_reply_cache(cstate, open, current_fh); |
1da177e4 LT |
333 | |
334 | open->op_truncate = (open->op_iattr.ia_valid & ATTR_SIZE) && | |
335 | (open->op_iattr.ia_size == 0); | |
9f415eb2 BF |
336 | /* |
337 | * In the delegation case, the client is telling us about an | |
338 | * open that it *already* performed locally, some time ago. We | |
339 | * should let it succeed now if possible. | |
340 | * | |
341 | * In the case of a CLAIM_FH open, on the other hand, the client | |
342 | * may be counting on us to enforce permissions (the Linux 4.1 | |
343 | * client uses this for normal opens, for example). | |
344 | */ | |
345 | if (open->op_claim_type == NFS4_OPEN_CLAIM_DELEG_CUR_FH) | |
346 | accmode = NFSD_MAY_OWNER_OVERRIDE; | |
1da177e4 | 347 | |
9f415eb2 | 348 | status = do_open_permission(rqstp, current_fh, open, accmode); |
1da177e4 LT |
349 | |
350 | return status; | |
351 | } | |
352 | ||
60adfc50 AA |
353 | static void |
354 | copy_clientid(clientid_t *clid, struct nfsd4_session *session) | |
355 | { | |
356 | struct nfsd4_sessionid *sid = | |
357 | (struct nfsd4_sessionid *)session->se_sessionid.data; | |
358 | ||
359 | clid->cl_boot = sid->clientid.cl_boot; | |
360 | clid->cl_id = sid->clientid.cl_id; | |
361 | } | |
1da177e4 | 362 | |
7191155b | 363 | static __be32 |
ca364317 | 364 | nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 365 | union nfsd4_op_u *u) |
1da177e4 | 366 | { |
eb69853d | 367 | struct nfsd4_open *open = &u->open; |
b37ad28b | 368 | __be32 status; |
c0e6bee4 | 369 | struct svc_fh *resfh = NULL; |
3320fef1 SK |
370 | struct net *net = SVC_NET(rqstp); |
371 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); | |
03f318ca | 372 | bool reclaim = false; |
6668958f | 373 | |
fe0750e5 | 374 | dprintk("NFSD: nfsd4_open filename %.*s op_openowner %p\n", |
1708e50b | 375 | (int)open->op_fnamelen, open->op_fname, |
fe0750e5 | 376 | open->op_openowner); |
1da177e4 | 377 | |
1da177e4 LT |
378 | /* This check required by spec. */ |
379 | if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL) | |
380 | return nfserr_inval; | |
381 | ||
500c2481 | 382 | open->op_created = false; |
ab1350b2 MJ |
383 | /* |
384 | * RFC5661 18.51.3 | |
385 | * Before RECLAIM_COMPLETE done, server should deny new lock | |
386 | */ | |
387 | if (nfsd4_has_session(cstate) && | |
ec59659b | 388 | !test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE, &cstate->clp->cl_flags) && |
ab1350b2 MJ |
389 | open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
390 | return nfserr_grace; | |
391 | ||
60adfc50 AA |
392 | if (nfsd4_has_session(cstate)) |
393 | copy_clientid(&open->op_clientid, cstate->session); | |
394 | ||
1da177e4 | 395 | /* check seqid for replay. set nfs4_owner */ |
6cd22668 | 396 | status = nfsd4_process_open1(cstate, open, nn); |
a90b061c | 397 | if (status == nfserr_replay_me) { |
fe0750e5 | 398 | struct nfs4_replay *rp = &open->op_openowner->oo_owner.so_replay; |
ca364317 | 399 | fh_put(&cstate->current_fh); |
a4773c08 BF |
400 | fh_copy_shallow(&cstate->current_fh.fh_handle, |
401 | &rp->rp_openfh); | |
8837abca | 402 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
403 | if (status) |
404 | dprintk("nfsd4_open: replay failed" | |
405 | " restoring previous filehandle\n"); | |
406 | else | |
a90b061c | 407 | status = nfserr_replay_me; |
1da177e4 LT |
408 | } |
409 | if (status) | |
410 | goto out; | |
9d313b17 BF |
411 | if (open->op_xdr_error) { |
412 | status = open->op_xdr_error; | |
413 | goto out; | |
414 | } | |
fb553c0f | 415 | |
3c8e0316 YZ |
416 | status = nfsd4_check_open_attributes(rqstp, cstate, open); |
417 | if (status) | |
418 | goto out; | |
419 | ||
fb553c0f BF |
420 | /* Openowner is now set, so sequence id will get bumped. Now we need |
421 | * these checks before we do any creates: */ | |
cbd0d51a | 422 | status = nfserr_grace; |
c87fb4a3 | 423 | if (opens_in_grace(net) && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a BF |
424 | goto out; |
425 | status = nfserr_no_grace; | |
c87fb4a3 | 426 | if (!opens_in_grace(net) && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS) |
cbd0d51a | 427 | goto out; |
fb553c0f | 428 | |
1da177e4 | 429 | switch (open->op_claim_type) { |
0dd3c192 | 430 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
1da177e4 | 431 | case NFS4_OPEN_CLAIM_NULL: |
c0e6bee4 | 432 | status = do_open_lookup(rqstp, cstate, open, &resfh); |
1da177e4 LT |
433 | if (status) |
434 | goto out; | |
435 | break; | |
436 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1722b046 | 437 | status = nfs4_check_open_reclaim(cstate->clp); |
0cf99b91 MJ |
438 | if (status) |
439 | goto out; | |
ba5378b6 | 440 | open->op_openowner->oo_flags |= NFS4_OO_CONFIRMED; |
03f318ca | 441 | reclaim = true; |
df561f66 | 442 | fallthrough; |
8b289b2c BF |
443 | case NFS4_OPEN_CLAIM_FH: |
444 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
bbc9c36c | 445 | status = do_open_fhandle(rqstp, cstate, open); |
1da177e4 LT |
446 | if (status) |
447 | goto out; | |
c0e6bee4 | 448 | resfh = &cstate->current_fh; |
1da177e4 | 449 | break; |
8b289b2c | 450 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: |
1da177e4 | 451 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: |
2fdada03 | 452 | dprintk("NFSD: unsupported OPEN claim type %d\n", |
1da177e4 LT |
453 | open->op_claim_type); |
454 | status = nfserr_notsupp; | |
455 | goto out; | |
456 | default: | |
2fdada03 | 457 | dprintk("NFSD: Invalid OPEN claim type %d\n", |
1da177e4 LT |
458 | open->op_claim_type); |
459 | status = nfserr_inval; | |
460 | goto out; | |
461 | } | |
462 | /* | |
463 | * nfsd4_process_open2() does the actual opening of the file. If | |
464 | * successful, it (1) truncates the file if open->op_truncate was | |
465 | * set, (2) sets open->op_stateid, (3) sets open->op_delegation. | |
466 | */ | |
c0e6bee4 | 467 | status = nfsd4_process_open2(rqstp, resfh, open); |
b3fbfe0e JL |
468 | WARN(status && open->op_created, |
469 | "nfsd4_process_open2 failed to open newly-created file! status=%u\n", | |
470 | be32_to_cpu(status)); | |
03f318ca BF |
471 | if (reclaim && !status) |
472 | nn->somebody_reclaimed = true; | |
1da177e4 | 473 | out: |
c0e6bee4 BF |
474 | if (resfh && resfh != &cstate->current_fh) { |
475 | fh_dup2(&cstate->current_fh, resfh); | |
476 | fh_put(resfh); | |
477 | kfree(resfh); | |
478 | } | |
42297899 | 479 | nfsd4_cleanup_open_state(cstate, open); |
9411b1d4 | 480 | nfsd4_bump_seqid(cstate, status); |
1da177e4 LT |
481 | return status; |
482 | } | |
483 | ||
9d313b17 BF |
484 | /* |
485 | * OPEN is the only seqid-mutating operation whose decoding can fail | |
486 | * with a seqid-mutating error (specifically, decoding of user names in | |
487 | * the attributes). Therefore we have to do some processing to look up | |
488 | * the stateowner so that we can bump the seqid. | |
489 | */ | |
490 | static __be32 nfsd4_open_omfg(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, struct nfsd4_op *op) | |
491 | { | |
eb69853d | 492 | struct nfsd4_open *open = &op->u.open; |
9d313b17 BF |
493 | |
494 | if (!seqid_mutating_err(ntohl(op->status))) | |
495 | return op->status; | |
496 | if (nfsd4_has_session(cstate)) | |
497 | return op->status; | |
498 | open->op_xdr_error = op->status; | |
eb69853d | 499 | return nfsd4_open(rqstp, cstate, &op->u); |
9d313b17 BF |
500 | } |
501 | ||
1da177e4 LT |
502 | /* |
503 | * filehandle-manipulating ops. | |
504 | */ | |
7191155b | 505 | static __be32 |
b591480b | 506 | nfsd4_getfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 507 | union nfsd4_op_u *u) |
1da177e4 | 508 | { |
eb69853d | 509 | u->getfh = &cstate->current_fh; |
1da177e4 LT |
510 | return nfs_ok; |
511 | } | |
512 | ||
7191155b | 513 | static __be32 |
ca364317 | 514 | nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 515 | union nfsd4_op_u *u) |
1da177e4 | 516 | { |
eb69853d | 517 | struct nfsd4_putfh *putfh = &u->putfh; |
b9e8638e | 518 | __be32 ret; |
eb69853d | 519 | |
ca364317 BF |
520 | fh_put(&cstate->current_fh); |
521 | cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen; | |
d8b26071 | 522 | memcpy(&cstate->current_fh.fh_handle.fh_raw, putfh->pf_fhval, |
ca364317 | 523 | putfh->pf_fhlen); |
b9e8638e OK |
524 | ret = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_BYPASS_GSS); |
525 | #ifdef CONFIG_NFSD_V4_2_INTER_SSC | |
526 | if (ret == nfserr_stale && putfh->no_verify) { | |
527 | SET_FH_FLAG(&cstate->current_fh, NFSD4_FH_FOREIGN); | |
528 | ret = 0; | |
529 | } | |
530 | #endif | |
531 | return ret; | |
1da177e4 LT |
532 | } |
533 | ||
7191155b | 534 | static __be32 |
b591480b | 535 | nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 536 | union nfsd4_op_u *u) |
1da177e4 | 537 | { |
b37ad28b | 538 | __be32 status; |
1da177e4 | 539 | |
ca364317 | 540 | fh_put(&cstate->current_fh); |
df547efb | 541 | status = exp_pseudoroot(rqstp, &cstate->current_fh); |
1da177e4 LT |
542 | return status; |
543 | } | |
544 | ||
7191155b | 545 | static __be32 |
b591480b | 546 | nfsd4_restorefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 547 | union nfsd4_op_u *u) |
1da177e4 | 548 | { |
ca364317 | 549 | if (!cstate->save_fh.fh_dentry) |
1da177e4 LT |
550 | return nfserr_restorefh; |
551 | ||
ca364317 | 552 | fh_dup2(&cstate->current_fh, &cstate->save_fh); |
51100d2b | 553 | if (HAS_CSTATE_FLAG(cstate, SAVED_STATE_ID_FLAG)) { |
37c593c5 | 554 | memcpy(&cstate->current_stateid, &cstate->save_stateid, sizeof(stateid_t)); |
51100d2b | 555 | SET_CSTATE_FLAG(cstate, CURRENT_STATE_ID_FLAG); |
37c593c5 | 556 | } |
1da177e4 LT |
557 | return nfs_ok; |
558 | } | |
559 | ||
7191155b | 560 | static __be32 |
b591480b | 561 | nfsd4_savefh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 562 | union nfsd4_op_u *u) |
1da177e4 | 563 | { |
ca364317 | 564 | fh_dup2(&cstate->save_fh, &cstate->current_fh); |
51100d2b | 565 | if (HAS_CSTATE_FLAG(cstate, CURRENT_STATE_ID_FLAG)) { |
37c593c5 | 566 | memcpy(&cstate->save_stateid, &cstate->current_stateid, sizeof(stateid_t)); |
51100d2b | 567 | SET_CSTATE_FLAG(cstate, SAVED_STATE_ID_FLAG); |
37c593c5 | 568 | } |
1da177e4 LT |
569 | return nfs_ok; |
570 | } | |
571 | ||
572 | /* | |
573 | * misc nfsv4 ops | |
574 | */ | |
7191155b | 575 | static __be32 |
ca364317 | 576 | nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 577 | union nfsd4_op_u *u) |
1da177e4 | 578 | { |
eb69853d | 579 | struct nfsd4_access *access = &u->access; |
c11d7fd1 | 580 | u32 access_full; |
eb69853d | 581 | |
c11d7fd1 FL |
582 | access_full = NFS3_ACCESS_FULL; |
583 | if (cstate->minorversion >= 2) | |
584 | access_full |= NFS4_ACCESS_XALIST | NFS4_ACCESS_XAREAD | | |
585 | NFS4_ACCESS_XAWRITE; | |
586 | ||
587 | if (access->ac_req_access & ~access_full) | |
1da177e4 LT |
588 | return nfserr_inval; |
589 | ||
590 | access->ac_resp_access = access->ac_req_access; | |
ca364317 BF |
591 | return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access, |
592 | &access->ac_supported); | |
1da177e4 LT |
593 | } |
594 | ||
b9c0ef85 | 595 | static void gen_boot_verifier(nfs4_verifier *verifier, struct net *net) |
ab4684d1 | 596 | { |
27c438f5 | 597 | __be32 *verf = (__be32 *)verifier->data; |
ab4684d1 | 598 | |
27c438f5 TM |
599 | BUILD_BUG_ON(2*sizeof(*verf) != sizeof(verifier->data)); |
600 | ||
601 | nfsd_copy_boot_verifier(verf, net_generic(net, nfsd_net_id)); | |
ab4684d1 CL |
602 | } |
603 | ||
7191155b | 604 | static __be32 |
ca364317 | 605 | nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 606 | union nfsd4_op_u *u) |
1da177e4 | 607 | { |
eb69853d CH |
608 | struct nfsd4_commit *commit = &u->commit; |
609 | ||
75c096f7 | 610 | return nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset, |
524ff1af TM |
611 | commit->co_count, |
612 | (__be32 *)commit->co_verf.data); | |
1da177e4 LT |
613 | } |
614 | ||
b37ad28b | 615 | static __be32 |
ca364317 | 616 | nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 617 | union nfsd4_op_u *u) |
1da177e4 | 618 | { |
eb69853d | 619 | struct nfsd4_create *create = &u->create; |
1da177e4 | 620 | struct svc_fh resfh; |
b37ad28b | 621 | __be32 status; |
1da177e4 LT |
622 | dev_t rdev; |
623 | ||
624 | fh_init(&resfh, NFS4_FHSIZE); | |
625 | ||
fa08139d | 626 | status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_NOP); |
1da177e4 LT |
627 | if (status) |
628 | return status; | |
629 | ||
3c8e0316 YZ |
630 | status = check_attr_support(rqstp, cstate, create->cr_bmval, |
631 | nfsd_attrmask); | |
632 | if (status) | |
633 | return status; | |
634 | ||
880a3a53 | 635 | current->fs->umask = create->cr_umask; |
1da177e4 LT |
636 | switch (create->cr_type) { |
637 | case NF4LNK: | |
ca364317 BF |
638 | status = nfsd_symlink(rqstp, &cstate->current_fh, |
639 | create->cr_name, create->cr_namelen, | |
1e444f5b | 640 | create->cr_data, &resfh); |
1da177e4 LT |
641 | break; |
642 | ||
643 | case NF4BLK: | |
880a3a53 | 644 | status = nfserr_inval; |
1da177e4 LT |
645 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); |
646 | if (MAJOR(rdev) != create->cr_specdata1 || | |
647 | MINOR(rdev) != create->cr_specdata2) | |
880a3a53 | 648 | goto out_umask; |
ca364317 BF |
649 | status = nfsd_create(rqstp, &cstate->current_fh, |
650 | create->cr_name, create->cr_namelen, | |
651 | &create->cr_iattr, S_IFBLK, rdev, &resfh); | |
1da177e4 LT |
652 | break; |
653 | ||
654 | case NF4CHR: | |
880a3a53 | 655 | status = nfserr_inval; |
1da177e4 LT |
656 | rdev = MKDEV(create->cr_specdata1, create->cr_specdata2); |
657 | if (MAJOR(rdev) != create->cr_specdata1 || | |
658 | MINOR(rdev) != create->cr_specdata2) | |
880a3a53 | 659 | goto out_umask; |
ca364317 BF |
660 | status = nfsd_create(rqstp, &cstate->current_fh, |
661 | create->cr_name, create->cr_namelen, | |
662 | &create->cr_iattr,S_IFCHR, rdev, &resfh); | |
1da177e4 LT |
663 | break; |
664 | ||
665 | case NF4SOCK: | |
ca364317 BF |
666 | status = nfsd_create(rqstp, &cstate->current_fh, |
667 | create->cr_name, create->cr_namelen, | |
668 | &create->cr_iattr, S_IFSOCK, 0, &resfh); | |
1da177e4 LT |
669 | break; |
670 | ||
671 | case NF4FIFO: | |
ca364317 BF |
672 | status = nfsd_create(rqstp, &cstate->current_fh, |
673 | create->cr_name, create->cr_namelen, | |
674 | &create->cr_iattr, S_IFIFO, 0, &resfh); | |
1da177e4 LT |
675 | break; |
676 | ||
677 | case NF4DIR: | |
678 | create->cr_iattr.ia_valid &= ~ATTR_SIZE; | |
ca364317 BF |
679 | status = nfsd_create(rqstp, &cstate->current_fh, |
680 | create->cr_name, create->cr_namelen, | |
681 | &create->cr_iattr, S_IFDIR, 0, &resfh); | |
1da177e4 LT |
682 | break; |
683 | ||
684 | default: | |
685 | status = nfserr_badtype; | |
686 | } | |
687 | ||
9208faf2 YZ |
688 | if (status) |
689 | goto out; | |
1da177e4 | 690 | |
18032ca0 DQ |
691 | if (create->cr_label.len) |
692 | nfsd4_security_inode_setsecctx(&resfh, &create->cr_label, create->cr_bmval); | |
693 | ||
9208faf2 YZ |
694 | if (create->cr_acl != NULL) |
695 | do_set_nfs4_acl(rqstp, &resfh, create->cr_acl, | |
696 | create->cr_bmval); | |
697 | ||
698 | fh_unlock(&cstate->current_fh); | |
699 | set_change_info(&create->cr_cinfo, &cstate->current_fh); | |
700 | fh_dup2(&cstate->current_fh, &resfh); | |
701 | out: | |
1da177e4 | 702 | fh_put(&resfh); |
880a3a53 BF |
703 | out_umask: |
704 | current->fs->umask = 0; | |
1da177e4 LT |
705 | return status; |
706 | } | |
707 | ||
7191155b | 708 | static __be32 |
ca364317 | 709 | nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 710 | union nfsd4_op_u *u) |
1da177e4 | 711 | { |
eb69853d | 712 | struct nfsd4_getattr *getattr = &u->getattr; |
b37ad28b | 713 | __be32 status; |
1da177e4 | 714 | |
8837abca | 715 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
716 | if (status) |
717 | return status; | |
718 | ||
719 | if (getattr->ga_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
720 | return nfserr_inval; | |
721 | ||
916d2d84 BF |
722 | getattr->ga_bmval[0] &= nfsd_suppattrs[cstate->minorversion][0]; |
723 | getattr->ga_bmval[1] &= nfsd_suppattrs[cstate->minorversion][1]; | |
724 | getattr->ga_bmval[2] &= nfsd_suppattrs[cstate->minorversion][2]; | |
1da177e4 | 725 | |
ca364317 | 726 | getattr->ga_fhp = &cstate->current_fh; |
1da177e4 LT |
727 | return nfs_ok; |
728 | } | |
729 | ||
7191155b | 730 | static __be32 |
ca364317 | 731 | nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 732 | union nfsd4_op_u *u) |
1da177e4 | 733 | { |
eb69853d | 734 | struct nfsd4_link *link = &u->link; |
95424460 | 735 | __be32 status; |
1da177e4 | 736 | |
ca364317 BF |
737 | status = nfsd_link(rqstp, &cstate->current_fh, |
738 | link->li_name, link->li_namelen, &cstate->save_fh); | |
1da177e4 | 739 | if (!status) |
ca364317 | 740 | set_change_info(&link->li_cinfo, &cstate->current_fh); |
1da177e4 LT |
741 | return status; |
742 | } | |
743 | ||
0ff7ab46 | 744 | static __be32 nfsd4_do_lookupp(struct svc_rqst *rqstp, struct svc_fh *fh) |
1da177e4 LT |
745 | { |
746 | struct svc_fh tmp_fh; | |
b37ad28b | 747 | __be32 ret; |
1da177e4 LT |
748 | |
749 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
df547efb BF |
750 | ret = exp_pseudoroot(rqstp, &tmp_fh); |
751 | if (ret) | |
1da177e4 | 752 | return ret; |
0ff7ab46 | 753 | if (tmp_fh.fh_dentry == fh->fh_dentry) { |
1da177e4 LT |
754 | fh_put(&tmp_fh); |
755 | return nfserr_noent; | |
756 | } | |
757 | fh_put(&tmp_fh); | |
0ff7ab46 BF |
758 | return nfsd_lookup(rqstp, fh, "..", 2, fh); |
759 | } | |
760 | ||
761 | static __be32 | |
762 | nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 763 | union nfsd4_op_u *u) |
0ff7ab46 BF |
764 | { |
765 | return nfsd4_do_lookupp(rqstp, &cstate->current_fh); | |
1da177e4 LT |
766 | } |
767 | ||
7191155b | 768 | static __be32 |
ca364317 | 769 | nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 770 | union nfsd4_op_u *u) |
1da177e4 | 771 | { |
ca364317 | 772 | return nfsd_lookup(rqstp, &cstate->current_fh, |
eb69853d | 773 | u->lookup.lo_name, u->lookup.lo_len, |
ca364317 | 774 | &cstate->current_fh); |
1da177e4 LT |
775 | } |
776 | ||
7191155b | 777 | static __be32 |
ca364317 | 778 | nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 779 | union nfsd4_op_u *u) |
1da177e4 | 780 | { |
eb69853d | 781 | struct nfsd4_read *read = &u->read; |
b37ad28b | 782 | __be32 status; |
1da177e4 | 783 | |
5c4583b2 | 784 | read->rd_nf = NULL; |
1da177e4 LT |
785 | if (read->rd_offset >= OFFSET_MAX) |
786 | return nfserr_inval; | |
787 | ||
87c5942e CL |
788 | trace_nfsd_read_start(rqstp, &cstate->current_fh, |
789 | read->rd_offset, read->rd_length); | |
790 | ||
9b3234b9 BF |
791 | /* |
792 | * If we do a zero copy read, then a client will see read data | |
793 | * that reflects the state of the file *after* performing the | |
794 | * following compound. | |
795 | * | |
796 | * To ensure proper ordering, we therefore turn off zero copy if | |
797 | * the client wants us to do more in this compound: | |
798 | */ | |
799 | if (!nfsd4_last_compound_op(rqstp)) | |
779fb0f3 | 800 | clear_bit(RQ_SPLICE_OK, &rqstp->rq_flags); |
9b3234b9 | 801 | |
1da177e4 | 802 | /* check stateid */ |
aa0d6aed AS |
803 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, |
804 | &read->rd_stateid, RD_STATE, | |
624322f1 | 805 | &read->rd_nf, NULL); |
af90f707 | 806 | if (status) { |
1da177e4 LT |
807 | dprintk("NFSD: nfsd4_read: couldn't process stateid!\n"); |
808 | goto out; | |
809 | } | |
810 | status = nfs_ok; | |
811 | out: | |
1da177e4 | 812 | read->rd_rqstp = rqstp; |
ca364317 | 813 | read->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
814 | return status; |
815 | } | |
816 | ||
34b1744c BF |
817 | |
818 | static void | |
819 | nfsd4_read_release(union nfsd4_op_u *u) | |
820 | { | |
5c4583b2 JL |
821 | if (u->read.rd_nf) |
822 | nfsd_file_put(u->read.rd_nf); | |
87c5942e CL |
823 | trace_nfsd_read_done(u->read.rd_rqstp, u->read.rd_fhp, |
824 | u->read.rd_offset, u->read.rd_length); | |
34b1744c BF |
825 | } |
826 | ||
7191155b | 827 | static __be32 |
ca364317 | 828 | nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 829 | union nfsd4_op_u *u) |
1da177e4 | 830 | { |
eb69853d | 831 | struct nfsd4_readdir *readdir = &u->readdir; |
1da177e4 LT |
832 | u64 cookie = readdir->rd_cookie; |
833 | static const nfs4_verifier zeroverf; | |
834 | ||
835 | /* no need to check permission - this will be done in nfsd_readdir() */ | |
836 | ||
837 | if (readdir->rd_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1) | |
838 | return nfserr_inval; | |
839 | ||
916d2d84 BF |
840 | readdir->rd_bmval[0] &= nfsd_suppattrs[cstate->minorversion][0]; |
841 | readdir->rd_bmval[1] &= nfsd_suppattrs[cstate->minorversion][1]; | |
842 | readdir->rd_bmval[2] &= nfsd_suppattrs[cstate->minorversion][2]; | |
1da177e4 | 843 | |
832023bf | 844 | if ((cookie == 1) || (cookie == 2) || |
1da177e4 LT |
845 | (cookie == 0 && memcmp(readdir->rd_verf.data, zeroverf.data, NFS4_VERIFIER_SIZE))) |
846 | return nfserr_bad_cookie; | |
847 | ||
848 | readdir->rd_rqstp = rqstp; | |
ca364317 | 849 | readdir->rd_fhp = &cstate->current_fh; |
1da177e4 LT |
850 | return nfs_ok; |
851 | } | |
852 | ||
7191155b | 853 | static __be32 |
ca364317 | 854 | nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 855 | union nfsd4_op_u *u) |
1da177e4 | 856 | { |
eb69853d CH |
857 | u->readlink.rl_rqstp = rqstp; |
858 | u->readlink.rl_fhp = &cstate->current_fh; | |
1da177e4 LT |
859 | return nfs_ok; |
860 | } | |
861 | ||
7191155b | 862 | static __be32 |
ca364317 | 863 | nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 864 | union nfsd4_op_u *u) |
1da177e4 | 865 | { |
eb69853d | 866 | struct nfsd4_remove *remove = &u->remove; |
b37ad28b | 867 | __be32 status; |
1da177e4 | 868 | |
c87fb4a3 | 869 | if (opens_in_grace(SVC_NET(rqstp))) |
c815afc7 | 870 | return nfserr_grace; |
ca364317 BF |
871 | status = nfsd_unlink(rqstp, &cstate->current_fh, 0, |
872 | remove->rm_name, remove->rm_namelen); | |
1da177e4 | 873 | if (!status) { |
ca364317 BF |
874 | fh_unlock(&cstate->current_fh); |
875 | set_change_info(&remove->rm_cinfo, &cstate->current_fh); | |
1da177e4 LT |
876 | } |
877 | return status; | |
878 | } | |
879 | ||
7191155b | 880 | static __be32 |
ca364317 | 881 | nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 882 | union nfsd4_op_u *u) |
1da177e4 | 883 | { |
eb69853d | 884 | struct nfsd4_rename *rename = &u->rename; |
95424460 | 885 | __be32 status; |
1da177e4 | 886 | |
f8f71d00 | 887 | if (opens_in_grace(SVC_NET(rqstp))) |
c815afc7 | 888 | return nfserr_grace; |
ca364317 BF |
889 | status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname, |
890 | rename->rn_snamelen, &cstate->current_fh, | |
1da177e4 | 891 | rename->rn_tname, rename->rn_tnamelen); |
2a6cf944 BF |
892 | if (status) |
893 | return status; | |
894 | set_change_info(&rename->rn_sinfo, &cstate->current_fh); | |
895 | set_change_info(&rename->rn_tinfo, &cstate->save_fh); | |
896 | return nfs_ok; | |
1da177e4 LT |
897 | } |
898 | ||
dcb488a3 AA |
899 | static __be32 |
900 | nfsd4_secinfo(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 901 | union nfsd4_op_u *u) |
dcb488a3 | 902 | { |
eb69853d | 903 | struct nfsd4_secinfo *secinfo = &u->secinfo; |
dcb488a3 AA |
904 | struct svc_export *exp; |
905 | struct dentry *dentry; | |
906 | __be32 err; | |
907 | ||
29a78a3e BF |
908 | err = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, NFSD_MAY_EXEC); |
909 | if (err) | |
910 | return err; | |
dcb488a3 AA |
911 | err = nfsd_lookup_dentry(rqstp, &cstate->current_fh, |
912 | secinfo->si_name, secinfo->si_namelen, | |
913 | &exp, &dentry); | |
914 | if (err) | |
915 | return err; | |
2f6fc056 | 916 | fh_unlock(&cstate->current_fh); |
2b0143b5 | 917 | if (d_really_is_negative(dentry)) { |
dcb488a3 AA |
918 | exp_put(exp); |
919 | err = nfserr_noent; | |
920 | } else | |
921 | secinfo->si_exp = exp; | |
922 | dput(dentry); | |
56560b9a BF |
923 | if (cstate->minorversion) |
924 | /* See rfc 5661 section 2.6.3.1.1.8 */ | |
925 | fh_put(&cstate->current_fh); | |
dcb488a3 AA |
926 | return err; |
927 | } | |
928 | ||
04f4ad16 BF |
929 | static __be32 |
930 | nfsd4_secinfo_no_name(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 931 | union nfsd4_op_u *u) |
04f4ad16 BF |
932 | { |
933 | __be32 err; | |
934 | ||
eb69853d | 935 | switch (u->secinfo_no_name.sin_style) { |
04f4ad16 BF |
936 | case NFS4_SECINFO_STYLE4_CURRENT_FH: |
937 | break; | |
938 | case NFS4_SECINFO_STYLE4_PARENT: | |
939 | err = nfsd4_do_lookupp(rqstp, &cstate->current_fh); | |
940 | if (err) | |
941 | return err; | |
942 | break; | |
943 | default: | |
944 | return nfserr_inval; | |
945 | } | |
bf18f163 | 946 | |
eb69853d | 947 | u->secinfo_no_name.sin_exp = exp_get(cstate->current_fh.fh_export); |
04f4ad16 BF |
948 | fh_put(&cstate->current_fh); |
949 | return nfs_ok; | |
950 | } | |
951 | ||
34b1744c BF |
952 | static void |
953 | nfsd4_secinfo_release(union nfsd4_op_u *u) | |
954 | { | |
955 | if (u->secinfo.si_exp) | |
956 | exp_put(u->secinfo.si_exp); | |
957 | } | |
958 | ||
ec572b9e EG |
959 | static void |
960 | nfsd4_secinfo_no_name_release(union nfsd4_op_u *u) | |
961 | { | |
962 | if (u->secinfo_no_name.sin_exp) | |
963 | exp_put(u->secinfo_no_name.sin_exp); | |
964 | } | |
965 | ||
7191155b | 966 | static __be32 |
ca364317 | 967 | nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 968 | union nfsd4_op_u *u) |
1da177e4 | 969 | { |
eb69853d | 970 | struct nfsd4_setattr *setattr = &u->setattr; |
b37ad28b | 971 | __be32 status = nfs_ok; |
96f6f985 | 972 | int err; |
1da177e4 | 973 | |
1da177e4 | 974 | if (setattr->sa_iattr.ia_valid & ATTR_SIZE) { |
af90f707 | 975 | status = nfs4_preprocess_stateid_op(rqstp, cstate, |
aa0d6aed | 976 | &cstate->current_fh, &setattr->sa_stateid, |
624322f1 | 977 | WR_STATE, NULL, NULL); |
375c5547 | 978 | if (status) { |
3e3b4800 | 979 | dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n"); |
375c5547 BF |
980 | return status; |
981 | } | |
1da177e4 | 982 | } |
96f6f985 AV |
983 | err = fh_want_write(&cstate->current_fh); |
984 | if (err) | |
985 | return nfserrno(err); | |
1da177e4 | 986 | status = nfs_ok; |
3c8e0316 YZ |
987 | |
988 | status = check_attr_support(rqstp, cstate, setattr->sa_bmval, | |
989 | nfsd_attrmask); | |
990 | if (status) | |
991 | goto out; | |
992 | ||
1da177e4 | 993 | if (setattr->sa_acl != NULL) |
ca364317 BF |
994 | status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh, |
995 | setattr->sa_acl); | |
1da177e4 | 996 | if (status) |
18f335af | 997 | goto out; |
18032ca0 DQ |
998 | if (setattr->sa_label.len) |
999 | status = nfsd4_set_nfs4_label(rqstp, &cstate->current_fh, | |
1000 | &setattr->sa_label); | |
1001 | if (status) | |
1002 | goto out; | |
ca364317 | 1003 | status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr, |
2a1aa489 | 1004 | 0, (time64_t)0); |
18f335af | 1005 | out: |
bad0dcff | 1006 | fh_drop_write(&cstate->current_fh); |
1da177e4 LT |
1007 | return status; |
1008 | } | |
1009 | ||
7191155b | 1010 | static __be32 |
ca364317 | 1011 | nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
eb69853d | 1012 | union nfsd4_op_u *u) |
1da177e4 | 1013 | { |
eb69853d | 1014 | struct nfsd4_write *write = &u->write; |
1da177e4 | 1015 | stateid_t *stateid = &write->wr_stateid; |
5c4583b2 | 1016 | struct nfsd_file *nf = NULL; |
b37ad28b | 1017 | __be32 status = nfs_ok; |
31dec253 | 1018 | unsigned long cnt; |
ffe1137b | 1019 | int nvecs; |
1da177e4 | 1020 | |
1da177e4 LT |
1021 | if (write->wr_offset >= OFFSET_MAX) |
1022 | return nfserr_inval; | |
1023 | ||
d890be15 CL |
1024 | cnt = write->wr_buflen; |
1025 | trace_nfsd_write_start(rqstp, &cstate->current_fh, | |
1026 | write->wr_offset, cnt); | |
aa0d6aed | 1027 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, |
624322f1 | 1028 | stateid, WR_STATE, &nf, NULL); |
375c5547 BF |
1029 | if (status) { |
1030 | dprintk("NFSD: nfsd4_write: couldn't process stateid!\n"); | |
1031 | return status; | |
1032 | } | |
1033 | ||
1da177e4 | 1034 | write->wr_how_written = write->wr_stable_how; |
1da177e4 | 1035 | |
dae9a6ca | 1036 | nvecs = svc_fill_write_vector(rqstp, &write->wr_payload); |
ffe1137b BF |
1037 | WARN_ON_ONCE(nvecs > ARRAY_SIZE(rqstp->rq_vec)); |
1038 | ||
16f8f894 | 1039 | status = nfsd_vfs_write(rqstp, &cstate->current_fh, nf, |
af90f707 | 1040 | write->wr_offset, rqstp->rq_vec, nvecs, &cnt, |
19e0663f TM |
1041 | write->wr_how_written, |
1042 | (__be32 *)write->wr_verifier.data); | |
5c4583b2 | 1043 | nfsd_file_put(nf); |
1da177e4 | 1044 | |
31dec253 | 1045 | write->wr_bytes_written = cnt; |
d890be15 CL |
1046 | trace_nfsd_write_done(rqstp, &cstate->current_fh, |
1047 | write->wr_offset, cnt); | |
1da177e4 | 1048 | return status; |
1da177e4 LT |
1049 | } |
1050 | ||
ffa0160a | 1051 | static __be32 |
29ae7f9d | 1052 | nfsd4_verify_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
5c4583b2 JL |
1053 | stateid_t *src_stateid, struct nfsd_file **src, |
1054 | stateid_t *dst_stateid, struct nfsd_file **dst) | |
ffa0160a | 1055 | { |
ffa0160a CH |
1056 | __be32 status; |
1057 | ||
01310bb7 SM |
1058 | if (!cstate->save_fh.fh_dentry) |
1059 | return nfserr_nofilehandle; | |
1060 | ||
ffa0160a | 1061 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->save_fh, |
624322f1 | 1062 | src_stateid, RD_STATE, src, NULL); |
ffa0160a CH |
1063 | if (status) { |
1064 | dprintk("NFSD: %s: couldn't process src stateid!\n", __func__); | |
1065 | goto out; | |
1066 | } | |
1067 | ||
1068 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, | |
624322f1 | 1069 | dst_stateid, WR_STATE, dst, NULL); |
ffa0160a CH |
1070 | if (status) { |
1071 | dprintk("NFSD: %s: couldn't process dst stateid!\n", __func__); | |
1072 | goto out_put_src; | |
1073 | } | |
1074 | ||
1075 | /* fix up for NFS-specific error code */ | |
5c4583b2 JL |
1076 | if (!S_ISREG(file_inode((*src)->nf_file)->i_mode) || |
1077 | !S_ISREG(file_inode((*dst)->nf_file)->i_mode)) { | |
ffa0160a CH |
1078 | status = nfserr_wrong_type; |
1079 | goto out_put_dst; | |
1080 | } | |
1081 | ||
29ae7f9d AS |
1082 | out: |
1083 | return status; | |
1084 | out_put_dst: | |
5c4583b2 | 1085 | nfsd_file_put(*dst); |
29ae7f9d | 1086 | out_put_src: |
5c4583b2 | 1087 | nfsd_file_put(*src); |
29ae7f9d AS |
1088 | goto out; |
1089 | } | |
1090 | ||
1091 | static __be32 | |
1092 | nfsd4_clone(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 1093 | union nfsd4_op_u *u) |
29ae7f9d | 1094 | { |
eb69853d | 1095 | struct nfsd4_clone *clone = &u->clone; |
5c4583b2 | 1096 | struct nfsd_file *src, *dst; |
29ae7f9d AS |
1097 | __be32 status; |
1098 | ||
1099 | status = nfsd4_verify_copy(rqstp, cstate, &clone->cl_src_stateid, &src, | |
1100 | &clone->cl_dst_stateid, &dst); | |
1101 | if (status) | |
1102 | goto out; | |
1103 | ||
b66ae6dd TM |
1104 | status = nfsd4_clone_file_range(src, clone->cl_src_pos, |
1105 | dst, clone->cl_dst_pos, clone->cl_count, | |
a25e3726 | 1106 | EX_ISSYNC(cstate->current_fh.fh_export)); |
ffa0160a | 1107 | |
5c4583b2 JL |
1108 | nfsd_file_put(dst); |
1109 | nfsd_file_put(src); | |
ffa0160a CH |
1110 | out: |
1111 | return status; | |
1112 | } | |
1113 | ||
e0639dc5 OK |
1114 | void nfs4_put_copy(struct nfsd4_copy *copy) |
1115 | { | |
1116 | if (!refcount_dec_and_test(©->refcount)) | |
1117 | return; | |
1118 | kfree(copy); | |
1119 | } | |
1120 | ||
1121 | static bool | |
1122 | check_and_set_stop_copy(struct nfsd4_copy *copy) | |
1123 | { | |
1124 | bool value; | |
1125 | ||
1126 | spin_lock(©->cp_clp->async_lock); | |
1127 | value = copy->stopped; | |
1128 | if (!copy->stopped) | |
1129 | copy->stopped = true; | |
1130 | spin_unlock(©->cp_clp->async_lock); | |
1131 | return value; | |
1132 | } | |
1133 | ||
1134 | static void nfsd4_stop_copy(struct nfsd4_copy *copy) | |
1135 | { | |
1136 | /* only 1 thread should stop the copy */ | |
1137 | if (!check_and_set_stop_copy(copy)) | |
1138 | kthread_stop(copy->copy_task); | |
1139 | nfs4_put_copy(copy); | |
1140 | } | |
1141 | ||
1142 | static struct nfsd4_copy *nfsd4_get_copy(struct nfs4_client *clp) | |
1143 | { | |
1144 | struct nfsd4_copy *copy = NULL; | |
1145 | ||
1146 | spin_lock(&clp->async_lock); | |
1147 | if (!list_empty(&clp->async_copies)) { | |
1148 | copy = list_first_entry(&clp->async_copies, struct nfsd4_copy, | |
1149 | copies); | |
1150 | refcount_inc(©->refcount); | |
1151 | } | |
1152 | spin_unlock(&clp->async_lock); | |
1153 | return copy; | |
1154 | } | |
1155 | ||
1156 | void nfsd4_shutdown_copy(struct nfs4_client *clp) | |
1157 | { | |
1158 | struct nfsd4_copy *copy; | |
1159 | ||
1160 | while ((copy = nfsd4_get_copy(clp)) != NULL) | |
1161 | nfsd4_stop_copy(copy); | |
1162 | } | |
ce0887ac OK |
1163 | #ifdef CONFIG_NFSD_V4_2_INTER_SSC |
1164 | ||
1165 | extern struct file *nfs42_ssc_open(struct vfsmount *ss_mnt, | |
1166 | struct nfs_fh *src_fh, | |
1167 | nfs4_stateid *stateid); | |
1168 | extern void nfs42_ssc_close(struct file *filep); | |
1169 | ||
1170 | extern void nfs_sb_deactive(struct super_block *sb); | |
1171 | ||
1172 | #define NFSD42_INTERSSC_MOUNTOPS "vers=4.2,addr=%s,sec=sys" | |
1173 | ||
f4e44b39 DN |
1174 | /* |
1175 | * setup a work entry in the ssc delayed unmount list. | |
1176 | */ | |
f47dc2d3 | 1177 | static __be32 nfsd4_ssc_setup_dul(struct nfsd_net *nn, char *ipaddr, |
f4e44b39 DN |
1178 | struct nfsd4_ssc_umount_item **retwork, struct vfsmount **ss_mnt) |
1179 | { | |
8e70bf27 | 1180 | struct nfsd4_ssc_umount_item *ni = NULL; |
f4e44b39 DN |
1181 | struct nfsd4_ssc_umount_item *work = NULL; |
1182 | struct nfsd4_ssc_umount_item *tmp; | |
1183 | DEFINE_WAIT(wait); | |
1184 | ||
1185 | *ss_mnt = NULL; | |
1186 | *retwork = NULL; | |
1187 | work = kzalloc(sizeof(*work), GFP_KERNEL); | |
1188 | try_again: | |
1189 | spin_lock(&nn->nfsd_ssc_lock); | |
1190 | list_for_each_entry_safe(ni, tmp, &nn->nfsd_ssc_mount_list, nsui_list) { | |
1191 | if (strncmp(ni->nsui_ipaddr, ipaddr, sizeof(ni->nsui_ipaddr))) | |
1192 | continue; | |
1193 | /* found a match */ | |
1194 | if (ni->nsui_busy) { | |
1195 | /* wait - and try again */ | |
1196 | prepare_to_wait(&nn->nfsd_ssc_waitq, &wait, | |
1197 | TASK_INTERRUPTIBLE); | |
1198 | spin_unlock(&nn->nfsd_ssc_lock); | |
1199 | ||
1200 | /* allow 20secs for mount/unmount for now - revisit */ | |
1201 | if (signal_pending(current) || | |
1202 | (schedule_timeout(20*HZ) == 0)) { | |
1203 | kfree(work); | |
1204 | return nfserr_eagain; | |
1205 | } | |
1206 | finish_wait(&nn->nfsd_ssc_waitq, &wait); | |
1207 | goto try_again; | |
1208 | } | |
1209 | *ss_mnt = ni->nsui_vfsmount; | |
1210 | refcount_inc(&ni->nsui_refcnt); | |
1211 | spin_unlock(&nn->nfsd_ssc_lock); | |
1212 | kfree(work); | |
1213 | ||
1214 | /* return vfsmount in ss_mnt */ | |
1215 | return 0; | |
1216 | } | |
1217 | if (work) { | |
1218 | strncpy(work->nsui_ipaddr, ipaddr, sizeof(work->nsui_ipaddr)); | |
1219 | refcount_set(&work->nsui_refcnt, 2); | |
1220 | work->nsui_busy = true; | |
1221 | list_add_tail(&work->nsui_list, &nn->nfsd_ssc_mount_list); | |
1222 | *retwork = work; | |
1223 | } | |
1224 | spin_unlock(&nn->nfsd_ssc_lock); | |
1225 | return 0; | |
1226 | } | |
1227 | ||
1228 | static void nfsd4_ssc_update_dul_work(struct nfsd_net *nn, | |
1229 | struct nfsd4_ssc_umount_item *work, struct vfsmount *ss_mnt) | |
1230 | { | |
1231 | /* set nsui_vfsmount, clear busy flag and wakeup waiters */ | |
1232 | spin_lock(&nn->nfsd_ssc_lock); | |
1233 | work->nsui_vfsmount = ss_mnt; | |
1234 | work->nsui_busy = false; | |
1235 | wake_up_all(&nn->nfsd_ssc_waitq); | |
1236 | spin_unlock(&nn->nfsd_ssc_lock); | |
1237 | } | |
1238 | ||
1239 | static void nfsd4_ssc_cancel_dul_work(struct nfsd_net *nn, | |
1240 | struct nfsd4_ssc_umount_item *work) | |
1241 | { | |
1242 | spin_lock(&nn->nfsd_ssc_lock); | |
1243 | list_del(&work->nsui_list); | |
1244 | wake_up_all(&nn->nfsd_ssc_waitq); | |
1245 | spin_unlock(&nn->nfsd_ssc_lock); | |
1246 | kfree(work); | |
1247 | } | |
1248 | ||
f2453978 | 1249 | /* |
ce0887ac OK |
1250 | * Support one copy source server for now. |
1251 | */ | |
1252 | static __be32 | |
1253 | nfsd4_interssc_connect(struct nl4_server *nss, struct svc_rqst *rqstp, | |
1254 | struct vfsmount **mount) | |
1255 | { | |
1256 | struct file_system_type *type; | |
1257 | struct vfsmount *ss_mnt; | |
1258 | struct nfs42_netaddr *naddr; | |
1259 | struct sockaddr_storage tmp_addr; | |
1260 | size_t tmp_addrlen, match_netid_len = 3; | |
1261 | char *startsep = "", *endsep = "", *match_netid = "tcp"; | |
1262 | char *ipaddr, *dev_name, *raw_data; | |
b8290ca2 OK |
1263 | int len, raw_len; |
1264 | __be32 status = nfserr_inval; | |
f4e44b39 DN |
1265 | struct nfsd4_ssc_umount_item *work = NULL; |
1266 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); | |
ce0887ac OK |
1267 | |
1268 | naddr = &nss->u.nl4_addr; | |
1269 | tmp_addrlen = rpc_uaddr2sockaddr(SVC_NET(rqstp), naddr->addr, | |
1270 | naddr->addr_len, | |
1271 | (struct sockaddr *)&tmp_addr, | |
1272 | sizeof(tmp_addr)); | |
1273 | if (tmp_addrlen == 0) | |
1274 | goto out_err; | |
1275 | ||
1276 | if (tmp_addr.ss_family == AF_INET6) { | |
1277 | startsep = "["; | |
1278 | endsep = "]"; | |
1279 | match_netid = "tcp6"; | |
1280 | match_netid_len = 4; | |
1281 | } | |
1282 | ||
1283 | if (naddr->netid_len != match_netid_len || | |
1284 | strncmp(naddr->netid, match_netid, naddr->netid_len)) | |
1285 | goto out_err; | |
1286 | ||
1287 | /* Construct the raw data for the vfs_kern_mount call */ | |
1288 | len = RPC_MAX_ADDRBUFLEN + 1; | |
1289 | ipaddr = kzalloc(len, GFP_KERNEL); | |
1290 | if (!ipaddr) | |
1291 | goto out_err; | |
1292 | ||
1293 | rpc_ntop((struct sockaddr *)&tmp_addr, ipaddr, len); | |
1294 | ||
1295 | /* 2 for ipv6 endsep and startsep. 3 for ":/" and trailing '/0'*/ | |
1296 | ||
1297 | raw_len = strlen(NFSD42_INTERSSC_MOUNTOPS) + strlen(ipaddr); | |
1298 | raw_data = kzalloc(raw_len, GFP_KERNEL); | |
1299 | if (!raw_data) | |
1300 | goto out_free_ipaddr; | |
1301 | ||
1302 | snprintf(raw_data, raw_len, NFSD42_INTERSSC_MOUNTOPS, ipaddr); | |
1303 | ||
b8290ca2 | 1304 | status = nfserr_nodev; |
ce0887ac OK |
1305 | type = get_fs_type("nfs"); |
1306 | if (!type) | |
1307 | goto out_free_rawdata; | |
1308 | ||
1309 | /* Set the server:<export> for the vfs_kern_mount call */ | |
1310 | dev_name = kzalloc(len + 5, GFP_KERNEL); | |
1311 | if (!dev_name) | |
1312 | goto out_free_rawdata; | |
1313 | snprintf(dev_name, len + 5, "%s%s%s:/", startsep, ipaddr, endsep); | |
1314 | ||
f4e44b39 DN |
1315 | status = nfsd4_ssc_setup_dul(nn, ipaddr, &work, &ss_mnt); |
1316 | if (status) | |
1317 | goto out_free_devname; | |
1318 | if (ss_mnt) | |
1319 | goto out_done; | |
1320 | ||
ce0887ac OK |
1321 | /* Use an 'internal' mount: SB_KERNMOUNT -> MNT_INTERNAL */ |
1322 | ss_mnt = vfs_kern_mount(type, SB_KERNMOUNT, dev_name, raw_data); | |
1323 | module_put(type->owner); | |
f4e44b39 | 1324 | if (IS_ERR(ss_mnt)) { |
54185267 | 1325 | status = nfserr_nodev; |
f4e44b39 DN |
1326 | if (work) |
1327 | nfsd4_ssc_cancel_dul_work(nn, work); | |
ce0887ac | 1328 | goto out_free_devname; |
f4e44b39 DN |
1329 | } |
1330 | if (work) | |
1331 | nfsd4_ssc_update_dul_work(nn, work, ss_mnt); | |
1332 | out_done: | |
ce0887ac OK |
1333 | status = 0; |
1334 | *mount = ss_mnt; | |
1335 | ||
1336 | out_free_devname: | |
1337 | kfree(dev_name); | |
1338 | out_free_rawdata: | |
1339 | kfree(raw_data); | |
1340 | out_free_ipaddr: | |
1341 | kfree(ipaddr); | |
1342 | out_err: | |
1343 | return status; | |
1344 | } | |
1345 | ||
1346 | static void | |
1347 | nfsd4_interssc_disconnect(struct vfsmount *ss_mnt) | |
1348 | { | |
0cfcd405 | 1349 | nfs_do_sb_deactive(ss_mnt->mnt_sb); |
ce0887ac OK |
1350 | mntput(ss_mnt); |
1351 | } | |
1352 | ||
f2453978 | 1353 | /* |
ce0887ac | 1354 | * Verify COPY destination stateid. |
f2453978 | 1355 | * |
ce0887ac OK |
1356 | * Connect to the source server with NFSv4.1. |
1357 | * Create the source struct file for nfsd_copy_range. | |
1358 | * Called with COPY cstate: | |
1359 | * SAVED_FH: source filehandle | |
1360 | * CURRENT_FH: destination filehandle | |
ce0887ac OK |
1361 | */ |
1362 | static __be32 | |
1363 | nfsd4_setup_inter_ssc(struct svc_rqst *rqstp, | |
1364 | struct nfsd4_compound_state *cstate, | |
1365 | struct nfsd4_copy *copy, struct vfsmount **mount) | |
1366 | { | |
1367 | struct svc_fh *s_fh = NULL; | |
1368 | stateid_t *s_stid = ©->cp_src_stateid; | |
b8290ca2 | 1369 | __be32 status = nfserr_inval; |
ce0887ac OK |
1370 | |
1371 | /* Verify the destination stateid and set dst struct file*/ | |
1372 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, | |
1373 | ©->cp_dst_stateid, | |
1374 | WR_STATE, ©->nf_dst, NULL); | |
1375 | if (status) | |
1376 | goto out; | |
1377 | ||
1378 | status = nfsd4_interssc_connect(©->cp_src, rqstp, mount); | |
1379 | if (status) | |
1380 | goto out; | |
1381 | ||
1382 | s_fh = &cstate->save_fh; | |
1383 | ||
1384 | copy->c_fh.size = s_fh->fh_handle.fh_size; | |
d8b26071 | 1385 | memcpy(copy->c_fh.data, &s_fh->fh_handle.fh_raw, copy->c_fh.size); |
3f9544ca | 1386 | copy->stateid.seqid = cpu_to_be32(s_stid->si_generation); |
ce0887ac OK |
1387 | memcpy(copy->stateid.other, (void *)&s_stid->si_opaque, |
1388 | sizeof(stateid_opaque_t)); | |
1389 | ||
1390 | status = 0; | |
1391 | out: | |
1392 | return status; | |
1393 | } | |
1394 | ||
1395 | static void | |
1396 | nfsd4_cleanup_inter_ssc(struct vfsmount *ss_mnt, struct nfsd_file *src, | |
1397 | struct nfsd_file *dst) | |
1398 | { | |
f4e44b39 DN |
1399 | bool found = false; |
1400 | long timeout; | |
1401 | struct nfsd4_ssc_umount_item *tmp; | |
f47dc2d3 | 1402 | struct nfsd4_ssc_umount_item *ni = NULL; |
f4e44b39 DN |
1403 | struct nfsd_net *nn = net_generic(dst->nf_net, nfsd_net_id); |
1404 | ||
ce0887ac | 1405 | nfs42_ssc_close(src->nf_file); |
ce0887ac | 1406 | nfsd_file_put(dst); |
f4e44b39 DN |
1407 | fput(src->nf_file); |
1408 | ||
1409 | if (!nn) { | |
1410 | mntput(ss_mnt); | |
1411 | return; | |
1412 | } | |
1413 | spin_lock(&nn->nfsd_ssc_lock); | |
1414 | timeout = msecs_to_jiffies(nfsd4_ssc_umount_timeout); | |
1415 | list_for_each_entry_safe(ni, tmp, &nn->nfsd_ssc_mount_list, nsui_list) { | |
1416 | if (ni->nsui_vfsmount->mnt_sb == ss_mnt->mnt_sb) { | |
1417 | list_del(&ni->nsui_list); | |
1418 | /* | |
1419 | * vfsmount can be shared by multiple exports, | |
1420 | * decrement refcnt. If the count drops to 1 it | |
1421 | * will be unmounted when nsui_expire expires. | |
1422 | */ | |
1423 | refcount_dec(&ni->nsui_refcnt); | |
1424 | ni->nsui_expire = jiffies + timeout; | |
1425 | list_add_tail(&ni->nsui_list, &nn->nfsd_ssc_mount_list); | |
1426 | found = true; | |
1427 | break; | |
1428 | } | |
1429 | } | |
1430 | spin_unlock(&nn->nfsd_ssc_lock); | |
1431 | if (!found) { | |
1432 | mntput(ss_mnt); | |
1433 | return; | |
1434 | } | |
ce0887ac OK |
1435 | } |
1436 | ||
1437 | #else /* CONFIG_NFSD_V4_2_INTER_SSC */ | |
1438 | ||
1439 | static __be32 | |
1440 | nfsd4_setup_inter_ssc(struct svc_rqst *rqstp, | |
1441 | struct nfsd4_compound_state *cstate, | |
1442 | struct nfsd4_copy *copy, | |
1443 | struct vfsmount **mount) | |
1444 | { | |
1445 | *mount = NULL; | |
b8290ca2 | 1446 | return nfserr_inval; |
ce0887ac OK |
1447 | } |
1448 | ||
1449 | static void | |
1450 | nfsd4_cleanup_inter_ssc(struct vfsmount *ss_mnt, struct nfsd_file *src, | |
1451 | struct nfsd_file *dst) | |
1452 | { | |
1453 | } | |
1454 | ||
1455 | static void | |
1456 | nfsd4_interssc_disconnect(struct vfsmount *ss_mnt) | |
1457 | { | |
1458 | } | |
1459 | ||
1460 | static struct file *nfs42_ssc_open(struct vfsmount *ss_mnt, | |
1461 | struct nfs_fh *src_fh, | |
1462 | nfs4_stateid *stateid) | |
1463 | { | |
1464 | return NULL; | |
1465 | } | |
1466 | #endif /* CONFIG_NFSD_V4_2_INTER_SSC */ | |
1467 | ||
1468 | static __be32 | |
1469 | nfsd4_setup_intra_ssc(struct svc_rqst *rqstp, | |
1470 | struct nfsd4_compound_state *cstate, | |
1471 | struct nfsd4_copy *copy) | |
1472 | { | |
1473 | return nfsd4_verify_copy(rqstp, cstate, ©->cp_src_stateid, | |
1474 | ©->nf_src, ©->cp_dst_stateid, | |
1475 | ©->nf_dst); | |
1476 | } | |
1477 | ||
1478 | static void | |
1479 | nfsd4_cleanup_intra_ssc(struct nfsd_file *src, struct nfsd_file *dst) | |
1480 | { | |
1481 | nfsd_file_put(src); | |
1482 | nfsd_file_put(dst); | |
1483 | } | |
e0639dc5 OK |
1484 | |
1485 | static void nfsd4_cb_offload_release(struct nfsd4_callback *cb) | |
1486 | { | |
1487 | struct nfsd4_copy *copy = container_of(cb, struct nfsd4_copy, cp_cb); | |
1488 | ||
1489 | nfs4_put_copy(copy); | |
1490 | } | |
1491 | ||
1492 | static int nfsd4_cb_offload_done(struct nfsd4_callback *cb, | |
1493 | struct rpc_task *task) | |
1494 | { | |
1495 | return 1; | |
1496 | } | |
1497 | ||
1498 | static const struct nfsd4_callback_ops nfsd4_cb_offload_ops = { | |
1499 | .release = nfsd4_cb_offload_release, | |
1500 | .done = nfsd4_cb_offload_done | |
1501 | }; | |
1502 | ||
1503 | static void nfsd4_init_copy_res(struct nfsd4_copy *copy, bool sync) | |
1504 | { | |
eac0b17a OK |
1505 | copy->cp_res.wr_stable_how = |
1506 | copy->committed ? NFS_FILE_SYNC : NFS_UNSTABLE; | |
e0639dc5 OK |
1507 | copy->cp_synchronous = sync; |
1508 | gen_boot_verifier(©->cp_res.wr_verifier, copy->cp_clp->net); | |
1509 | } | |
1510 | ||
1511 | static ssize_t _nfsd_copy_file_range(struct nfsd4_copy *copy) | |
1512 | { | |
555dbf1a TM |
1513 | struct file *dst = copy->nf_dst->nf_file; |
1514 | struct file *src = copy->nf_src->nf_file; | |
1515 | errseq_t since; | |
e0639dc5 | 1516 | ssize_t bytes_copied = 0; |
e7a833e9 | 1517 | u64 bytes_total = copy->cp_count; |
e0639dc5 OK |
1518 | u64 src_pos = copy->cp_src_pos; |
1519 | u64 dst_pos = copy->cp_dst_pos; | |
c2f1c4bd | 1520 | int status; |
e0639dc5 | 1521 | |
792a5112 BF |
1522 | /* See RFC 7862 p.67: */ |
1523 | if (bytes_total == 0) | |
1524 | bytes_total = ULLONG_MAX; | |
e0639dc5 OK |
1525 | do { |
1526 | if (kthread_should_stop()) | |
1527 | break; | |
555dbf1a TM |
1528 | bytes_copied = nfsd_copy_file_range(src, src_pos, dst, dst_pos, |
1529 | bytes_total); | |
e0639dc5 OK |
1530 | if (bytes_copied <= 0) |
1531 | break; | |
1532 | bytes_total -= bytes_copied; | |
1533 | copy->cp_res.wr_bytes_written += bytes_copied; | |
1534 | src_pos += bytes_copied; | |
1535 | dst_pos += bytes_copied; | |
1536 | } while (bytes_total > 0 && !copy->cp_synchronous); | |
eac0b17a OK |
1537 | /* for a non-zero asynchronous copy do a commit of data */ |
1538 | if (!copy->cp_synchronous && copy->cp_res.wr_bytes_written > 0) { | |
555dbf1a TM |
1539 | since = READ_ONCE(dst->f_wb_err); |
1540 | status = vfs_fsync_range(dst, copy->cp_dst_pos, | |
eac0b17a | 1541 | copy->cp_res.wr_bytes_written, 0); |
555dbf1a TM |
1542 | if (!status) |
1543 | status = filemap_check_wb_err(dst->f_mapping, since); | |
eac0b17a OK |
1544 | if (!status) |
1545 | copy->committed = true; | |
1546 | } | |
e0639dc5 OK |
1547 | return bytes_copied; |
1548 | } | |
1549 | ||
1550 | static __be32 nfsd4_do_copy(struct nfsd4_copy *copy, bool sync) | |
1551 | { | |
1552 | __be32 status; | |
1553 | ssize_t bytes; | |
1554 | ||
1555 | bytes = _nfsd_copy_file_range(copy); | |
1556 | /* for async copy, we ignore the error, client can always retry | |
1557 | * to get the error | |
1558 | */ | |
1559 | if (bytes < 0 && !copy->cp_res.wr_bytes_written) | |
1560 | status = nfserrno(bytes); | |
1561 | else { | |
1562 | nfsd4_init_copy_res(copy, sync); | |
1563 | status = nfs_ok; | |
1564 | } | |
1565 | ||
ce0887ac OK |
1566 | if (!copy->cp_intra) /* Inter server SSC */ |
1567 | nfsd4_cleanup_inter_ssc(copy->ss_mnt, copy->nf_src, | |
1568 | copy->nf_dst); | |
1569 | else | |
1570 | nfsd4_cleanup_intra_ssc(copy->nf_src, copy->nf_dst); | |
1571 | ||
e0639dc5 OK |
1572 | return status; |
1573 | } | |
1574 | ||
eb162e17 | 1575 | static void dup_copy_fields(struct nfsd4_copy *src, struct nfsd4_copy *dst) |
e0639dc5 OK |
1576 | { |
1577 | dst->cp_src_pos = src->cp_src_pos; | |
1578 | dst->cp_dst_pos = src->cp_dst_pos; | |
1579 | dst->cp_count = src->cp_count; | |
1580 | dst->cp_synchronous = src->cp_synchronous; | |
1581 | memcpy(&dst->cp_res, &src->cp_res, sizeof(src->cp_res)); | |
1582 | memcpy(&dst->fh, &src->fh, sizeof(src->fh)); | |
1583 | dst->cp_clp = src->cp_clp; | |
5c4583b2 | 1584 | dst->nf_dst = nfsd_file_get(src->nf_dst); |
ce0887ac OK |
1585 | dst->cp_intra = src->cp_intra; |
1586 | if (src->cp_intra) /* for inter, file_src doesn't exist yet */ | |
1587 | dst->nf_src = nfsd_file_get(src->nf_src); | |
1588 | ||
e0639dc5 | 1589 | memcpy(&dst->cp_stateid, &src->cp_stateid, sizeof(src->cp_stateid)); |
ce0887ac OK |
1590 | memcpy(&dst->cp_src, &src->cp_src, sizeof(struct nl4_server)); |
1591 | memcpy(&dst->stateid, &src->stateid, sizeof(src->stateid)); | |
1592 | memcpy(&dst->c_fh, &src->c_fh, sizeof(src->c_fh)); | |
1593 | dst->ss_mnt = src->ss_mnt; | |
e0639dc5 OK |
1594 | } |
1595 | ||
1596 | static void cleanup_async_copy(struct nfsd4_copy *copy) | |
1597 | { | |
624322f1 | 1598 | nfs4_free_copy_state(copy); |
5c4583b2 | 1599 | nfsd_file_put(copy->nf_dst); |
2e577f0f OK |
1600 | if (copy->cp_intra) |
1601 | nfsd_file_put(copy->nf_src); | |
e0639dc5 OK |
1602 | spin_lock(©->cp_clp->async_lock); |
1603 | list_del(©->copies); | |
1604 | spin_unlock(©->cp_clp->async_lock); | |
1605 | nfs4_put_copy(copy); | |
1606 | } | |
1607 | ||
1608 | static int nfsd4_do_async_copy(void *data) | |
1609 | { | |
1610 | struct nfsd4_copy *copy = (struct nfsd4_copy *)data; | |
1611 | struct nfsd4_copy *cb_copy; | |
1612 | ||
ce0887ac OK |
1613 | if (!copy->cp_intra) { /* Inter server SSC */ |
1614 | copy->nf_src = kzalloc(sizeof(struct nfsd_file), GFP_KERNEL); | |
1615 | if (!copy->nf_src) { | |
1616 | copy->nfserr = nfserr_serverfault; | |
1617 | nfsd4_interssc_disconnect(copy->ss_mnt); | |
1618 | goto do_callback; | |
1619 | } | |
1620 | copy->nf_src->nf_file = nfs42_ssc_open(copy->ss_mnt, ©->c_fh, | |
1621 | ©->stateid); | |
1622 | if (IS_ERR(copy->nf_src->nf_file)) { | |
ce0887ac OK |
1623 | copy->nfserr = nfserr_offload_denied; |
1624 | nfsd4_interssc_disconnect(copy->ss_mnt); | |
1625 | goto do_callback; | |
1626 | } | |
1627 | } | |
1628 | ||
e0639dc5 | 1629 | copy->nfserr = nfsd4_do_copy(copy, 0); |
ce0887ac | 1630 | do_callback: |
e0639dc5 OK |
1631 | cb_copy = kzalloc(sizeof(struct nfsd4_copy), GFP_KERNEL); |
1632 | if (!cb_copy) | |
1633 | goto out; | |
49a36132 | 1634 | refcount_set(&cb_copy->refcount, 1); |
e0639dc5 OK |
1635 | memcpy(&cb_copy->cp_res, ©->cp_res, sizeof(copy->cp_res)); |
1636 | cb_copy->cp_clp = copy->cp_clp; | |
1637 | cb_copy->nfserr = copy->nfserr; | |
1638 | memcpy(&cb_copy->fh, ©->fh, sizeof(copy->fh)); | |
1639 | nfsd4_init_cb(&cb_copy->cp_cb, cb_copy->cp_clp, | |
1640 | &nfsd4_cb_offload_ops, NFSPROC4_CLNT_CB_OFFLOAD); | |
87512386 CL |
1641 | trace_nfsd_cb_offload(copy->cp_clp, ©->cp_res.cb_stateid, |
1642 | ©->fh, copy->cp_count, copy->nfserr); | |
e0639dc5 OK |
1643 | nfsd4_run_cb(&cb_copy->cp_cb); |
1644 | out: | |
ce0887ac OK |
1645 | if (!copy->cp_intra) |
1646 | kfree(copy->nf_src); | |
e0639dc5 OK |
1647 | cleanup_async_copy(copy); |
1648 | return 0; | |
1649 | } | |
1650 | ||
29ae7f9d AS |
1651 | static __be32 |
1652 | nfsd4_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 1653 | union nfsd4_op_u *u) |
29ae7f9d | 1654 | { |
eb69853d | 1655 | struct nfsd4_copy *copy = &u->copy; |
29ae7f9d | 1656 | __be32 status; |
e0639dc5 | 1657 | struct nfsd4_copy *async_copy = NULL; |
29ae7f9d | 1658 | |
ce0887ac OK |
1659 | if (!copy->cp_intra) { /* Inter server SSC */ |
1660 | if (!inter_copy_offload_enable || copy->cp_synchronous) { | |
1661 | status = nfserr_notsupp; | |
1662 | goto out; | |
1663 | } | |
1664 | status = nfsd4_setup_inter_ssc(rqstp, cstate, copy, | |
1665 | ©->ss_mnt); | |
1666 | if (status) | |
1667 | return nfserr_offload_denied; | |
1668 | } else { | |
1669 | status = nfsd4_setup_intra_ssc(rqstp, cstate, copy); | |
1670 | if (status) | |
1671 | return status; | |
1672 | } | |
29ae7f9d | 1673 | |
e0639dc5 OK |
1674 | copy->cp_clp = cstate->clp; |
1675 | memcpy(©->fh, &cstate->current_fh.fh_handle, | |
1676 | sizeof(struct knfsd_fh)); | |
1677 | if (!copy->cp_synchronous) { | |
1678 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); | |
29ae7f9d | 1679 | |
e0639dc5 OK |
1680 | status = nfserrno(-ENOMEM); |
1681 | async_copy = kzalloc(sizeof(struct nfsd4_copy), GFP_KERNEL); | |
1682 | if (!async_copy) | |
ce0887ac OK |
1683 | goto out_err; |
1684 | if (!nfs4_init_copy_state(nn, copy)) | |
1685 | goto out_err; | |
e0639dc5 | 1686 | refcount_set(&async_copy->refcount, 1); |
e739b120 OK |
1687 | memcpy(©->cp_res.cb_stateid, ©->cp_stateid.stid, |
1688 | sizeof(copy->cp_res.cb_stateid)); | |
eb162e17 | 1689 | dup_copy_fields(copy, async_copy); |
e0639dc5 OK |
1690 | async_copy->copy_task = kthread_create(nfsd4_do_async_copy, |
1691 | async_copy, "%s", "copy thread"); | |
1692 | if (IS_ERR(async_copy->copy_task)) | |
1693 | goto out_err; | |
1694 | spin_lock(&async_copy->cp_clp->async_lock); | |
1695 | list_add(&async_copy->copies, | |
1696 | &async_copy->cp_clp->async_copies); | |
1697 | spin_unlock(&async_copy->cp_clp->async_lock); | |
1698 | wake_up_process(async_copy->copy_task); | |
29ae7f9d | 1699 | status = nfs_ok; |
ce0887ac | 1700 | } else { |
e0639dc5 | 1701 | status = nfsd4_do_copy(copy, 1); |
ce0887ac | 1702 | } |
29ae7f9d AS |
1703 | out: |
1704 | return status; | |
e0639dc5 | 1705 | out_err: |
18f428d4 OK |
1706 | if (async_copy) |
1707 | cleanup_async_copy(async_copy); | |
ce0887ac OK |
1708 | status = nfserrno(-ENOMEM); |
1709 | if (!copy->cp_intra) | |
1710 | nfsd4_interssc_disconnect(copy->ss_mnt); | |
e0639dc5 OK |
1711 | goto out; |
1712 | } | |
1713 | ||
1714 | struct nfsd4_copy * | |
1715 | find_async_copy(struct nfs4_client *clp, stateid_t *stateid) | |
1716 | { | |
1717 | struct nfsd4_copy *copy; | |
1718 | ||
1719 | spin_lock(&clp->async_lock); | |
1720 | list_for_each_entry(copy, &clp->async_copies, copies) { | |
ce0887ac | 1721 | if (memcmp(©->cp_stateid.stid, stateid, NFS4_STATEID_SIZE)) |
e0639dc5 OK |
1722 | continue; |
1723 | refcount_inc(©->refcount); | |
1724 | spin_unlock(&clp->async_lock); | |
1725 | return copy; | |
1726 | } | |
1727 | spin_unlock(&clp->async_lock); | |
1728 | return NULL; | |
29ae7f9d AS |
1729 | } |
1730 | ||
885e2bf3 OK |
1731 | static __be32 |
1732 | nfsd4_offload_cancel(struct svc_rqst *rqstp, | |
1733 | struct nfsd4_compound_state *cstate, | |
1734 | union nfsd4_op_u *u) | |
1735 | { | |
e0639dc5 | 1736 | struct nfsd4_offload_status *os = &u->offload_status; |
e0639dc5 OK |
1737 | struct nfsd4_copy *copy; |
1738 | struct nfs4_client *clp = cstate->clp; | |
1739 | ||
1740 | copy = find_async_copy(clp, &os->stateid); | |
ce0887ac OK |
1741 | if (!copy) { |
1742 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); | |
1743 | ||
1744 | return manage_cpntf_state(nn, &os->stateid, clp, NULL); | |
1745 | } else | |
e0639dc5 | 1746 | nfsd4_stop_copy(copy); |
e0639dc5 | 1747 | |
ce0887ac | 1748 | return nfs_ok; |
885e2bf3 OK |
1749 | } |
1750 | ||
51911868 OK |
1751 | static __be32 |
1752 | nfsd4_copy_notify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
1753 | union nfsd4_op_u *u) | |
1754 | { | |
624322f1 OK |
1755 | struct nfsd4_copy_notify *cn = &u->copy_notify; |
1756 | __be32 status; | |
1757 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); | |
1758 | struct nfs4_stid *stid; | |
1759 | struct nfs4_cpntf_state *cps; | |
1760 | struct nfs4_client *clp = cstate->clp; | |
1761 | ||
1762 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, | |
1763 | &cn->cpn_src_stateid, RD_STATE, NULL, | |
1764 | &stid); | |
1765 | if (status) | |
1766 | return status; | |
1767 | ||
1768 | cn->cpn_sec = nn->nfsd4_lease; | |
1769 | cn->cpn_nsec = 0; | |
1770 | ||
1771 | status = nfserrno(-ENOMEM); | |
1772 | cps = nfs4_alloc_init_cpntf_state(nn, stid); | |
1773 | if (!cps) | |
1774 | goto out; | |
1775 | memcpy(&cn->cpn_cnr_stateid, &cps->cp_stateid.stid, sizeof(stateid_t)); | |
1776 | memcpy(&cps->cp_p_stateid, &stid->sc_stateid, sizeof(stateid_t)); | |
1777 | memcpy(&cps->cp_p_clid, &clp->cl_clientid, sizeof(clientid_t)); | |
1778 | ||
1779 | /* For now, only return one server address in cpn_src, the | |
1780 | * address used by the client to connect to this server. | |
1781 | */ | |
1782 | cn->cpn_src.nl4_type = NL4_NETADDR; | |
1783 | status = nfsd4_set_netaddr((struct sockaddr *)&rqstp->rq_daddr, | |
1784 | &cn->cpn_src.u.nl4_addr); | |
1785 | WARN_ON_ONCE(status); | |
1786 | if (status) { | |
1787 | nfs4_put_cpntf_state(nn, cps); | |
1788 | goto out; | |
1789 | } | |
1790 | out: | |
1791 | nfs4_put_stid(stid); | |
1792 | return status; | |
51911868 OK |
1793 | } |
1794 | ||
95d871f0 AS |
1795 | static __be32 |
1796 | nfsd4_fallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
1797 | struct nfsd4_fallocate *fallocate, int flags) | |
1798 | { | |
0d4d6720 | 1799 | __be32 status; |
5c4583b2 | 1800 | struct nfsd_file *nf; |
95d871f0 | 1801 | |
aa0d6aed | 1802 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, |
95d871f0 | 1803 | &fallocate->falloc_stateid, |
624322f1 | 1804 | WR_STATE, &nf, NULL); |
95d871f0 AS |
1805 | if (status != nfs_ok) { |
1806 | dprintk("NFSD: nfsd4_fallocate: couldn't process stateid!\n"); | |
1807 | return status; | |
1808 | } | |
1809 | ||
5c4583b2 | 1810 | status = nfsd4_vfs_fallocate(rqstp, &cstate->current_fh, nf->nf_file, |
95d871f0 AS |
1811 | fallocate->falloc_offset, |
1812 | fallocate->falloc_length, | |
1813 | flags); | |
5c4583b2 | 1814 | nfsd_file_put(nf); |
95d871f0 AS |
1815 | return status; |
1816 | } | |
6308bc98 OK |
1817 | static __be32 |
1818 | nfsd4_offload_status(struct svc_rqst *rqstp, | |
1819 | struct nfsd4_compound_state *cstate, | |
1820 | union nfsd4_op_u *u) | |
1821 | { | |
e0639dc5 OK |
1822 | struct nfsd4_offload_status *os = &u->offload_status; |
1823 | __be32 status = 0; | |
1824 | struct nfsd4_copy *copy; | |
1825 | struct nfs4_client *clp = cstate->clp; | |
1826 | ||
1827 | copy = find_async_copy(clp, &os->stateid); | |
1828 | if (copy) { | |
1829 | os->count = copy->cp_res.wr_bytes_written; | |
1830 | nfs4_put_copy(copy); | |
1831 | } else | |
1832 | status = nfserr_bad_stateid; | |
1833 | ||
1834 | return status; | |
6308bc98 | 1835 | } |
95d871f0 AS |
1836 | |
1837 | static __be32 | |
1838 | nfsd4_allocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 1839 | union nfsd4_op_u *u) |
95d871f0 | 1840 | { |
eb69853d | 1841 | return nfsd4_fallocate(rqstp, cstate, &u->allocate, 0); |
95d871f0 AS |
1842 | } |
1843 | ||
b0cb9085 AS |
1844 | static __be32 |
1845 | nfsd4_deallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 1846 | union nfsd4_op_u *u) |
b0cb9085 | 1847 | { |
eb69853d | 1848 | return nfsd4_fallocate(rqstp, cstate, &u->deallocate, |
b0cb9085 AS |
1849 | FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE); |
1850 | } | |
1851 | ||
24bab491 AS |
1852 | static __be32 |
1853 | nfsd4_seek(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 1854 | union nfsd4_op_u *u) |
24bab491 | 1855 | { |
eb69853d | 1856 | struct nfsd4_seek *seek = &u->seek; |
24bab491 AS |
1857 | int whence; |
1858 | __be32 status; | |
5c4583b2 | 1859 | struct nfsd_file *nf; |
24bab491 | 1860 | |
aa0d6aed | 1861 | status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh, |
24bab491 | 1862 | &seek->seek_stateid, |
624322f1 | 1863 | RD_STATE, &nf, NULL); |
24bab491 AS |
1864 | if (status) { |
1865 | dprintk("NFSD: nfsd4_seek: couldn't process stateid!\n"); | |
1866 | return status; | |
1867 | } | |
1868 | ||
1869 | switch (seek->seek_whence) { | |
1870 | case NFS4_CONTENT_DATA: | |
1871 | whence = SEEK_DATA; | |
1872 | break; | |
1873 | case NFS4_CONTENT_HOLE: | |
1874 | whence = SEEK_HOLE; | |
1875 | break; | |
1876 | default: | |
1877 | status = nfserr_union_notsupp; | |
1878 | goto out; | |
1879 | } | |
1880 | ||
1881 | /* | |
1882 | * Note: This call does change file->f_pos, but nothing in NFSD | |
1883 | * should ever file->f_pos. | |
1884 | */ | |
5c4583b2 | 1885 | seek->seek_pos = vfs_llseek(nf->nf_file, seek->seek_offset, whence); |
24bab491 AS |
1886 | if (seek->seek_pos < 0) |
1887 | status = nfserrno(seek->seek_pos); | |
5c4583b2 | 1888 | else if (seek->seek_pos >= i_size_read(file_inode(nf->nf_file))) |
24bab491 AS |
1889 | seek->seek_eof = true; |
1890 | ||
1891 | out: | |
5c4583b2 | 1892 | nfsd_file_put(nf); |
24bab491 AS |
1893 | return status; |
1894 | } | |
1895 | ||
1da177e4 LT |
1896 | /* This routine never returns NFS_OK! If there are no other errors, it |
1897 | * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the | |
1898 | * attributes matched. VERIFY is implemented by mapping NFSERR_SAME | |
1899 | * to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK. | |
1900 | */ | |
b37ad28b | 1901 | static __be32 |
c954e2a5 | 1902 | _nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, |
ca364317 | 1903 | struct nfsd4_verify *verify) |
1da177e4 | 1904 | { |
2ebbc012 | 1905 | __be32 *buf, *p; |
1da177e4 | 1906 | int count; |
b37ad28b | 1907 | __be32 status; |
1da177e4 | 1908 | |
8837abca | 1909 | status = fh_verify(rqstp, &cstate->current_fh, 0, NFSD_MAY_NOP); |
1da177e4 LT |
1910 | if (status) |
1911 | return status; | |
1912 | ||
3c8e0316 YZ |
1913 | status = check_attr_support(rqstp, cstate, verify->ve_bmval, NULL); |
1914 | if (status) | |
1915 | return status; | |
1916 | ||
1da177e4 LT |
1917 | if ((verify->ve_bmval[0] & FATTR4_WORD0_RDATTR_ERROR) |
1918 | || (verify->ve_bmval[1] & NFSD_WRITEONLY_ATTRS_WORD1)) | |
1919 | return nfserr_inval; | |
1920 | if (verify->ve_attrlen & 3) | |
1921 | return nfserr_inval; | |
1922 | ||
1923 | /* count in words: | |
1924 | * bitmap_len(1) + bitmap(2) + attr_len(1) = 4 | |
1925 | */ | |
1926 | count = 4 + (verify->ve_attrlen >> 2); | |
1927 | buf = kmalloc(count << 2, GFP_KERNEL); | |
1928 | if (!buf) | |
3e772463 | 1929 | return nfserr_jukebox; |
1da177e4 | 1930 | |
84822d0b | 1931 | p = buf; |
d5184658 | 1932 | status = nfsd4_encode_fattr_to_buf(&p, count, &cstate->current_fh, |
ca364317 | 1933 | cstate->current_fh.fh_export, |
d5184658 BF |
1934 | cstate->current_fh.fh_dentry, |
1935 | verify->ve_bmval, | |
406a7ea9 | 1936 | rqstp, 0); |
41ae6e71 BF |
1937 | /* |
1938 | * If nfsd4_encode_fattr() ran out of space, assume that's because | |
1939 | * the attributes are longer (hence different) than those given: | |
1940 | */ | |
84822d0b | 1941 | if (status == nfserr_resource) |
1da177e4 LT |
1942 | status = nfserr_not_same; |
1943 | if (status) | |
1944 | goto out_kfree; | |
1945 | ||
95ec28cd BH |
1946 | /* skip bitmap */ |
1947 | p = buf + 1 + ntohl(buf[0]); | |
1da177e4 LT |
1948 | status = nfserr_not_same; |
1949 | if (ntohl(*p++) != verify->ve_attrlen) | |
1950 | goto out_kfree; | |
1951 | if (!memcmp(p, verify->ve_attrval, verify->ve_attrlen)) | |
1952 | status = nfserr_same; | |
1953 | ||
1954 | out_kfree: | |
1955 | kfree(buf); | |
1956 | return status; | |
1957 | } | |
1958 | ||
c954e2a5 BF |
1959 | static __be32 |
1960 | nfsd4_nverify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 1961 | union nfsd4_op_u *u) |
c954e2a5 BF |
1962 | { |
1963 | __be32 status; | |
1964 | ||
eb69853d | 1965 | status = _nfsd4_verify(rqstp, cstate, &u->verify); |
c954e2a5 BF |
1966 | return status == nfserr_not_same ? nfs_ok : status; |
1967 | } | |
1968 | ||
1969 | static __be32 | |
1970 | nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
eb69853d | 1971 | union nfsd4_op_u *u) |
c954e2a5 BF |
1972 | { |
1973 | __be32 status; | |
1974 | ||
eb69853d | 1975 | status = _nfsd4_verify(rqstp, cstate, &u->nverify); |
c954e2a5 BF |
1976 | return status == nfserr_same ? nfs_ok : status; |
1977 | } | |
1978 | ||
9cf514cc CH |
1979 | #ifdef CONFIG_NFSD_PNFS |
1980 | static const struct nfsd4_layout_ops * | |
1981 | nfsd4_layout_verify(struct svc_export *exp, unsigned int layout_type) | |
1982 | { | |
8a4c3926 | 1983 | if (!exp->ex_layout_types) { |
9cf514cc CH |
1984 | dprintk("%s: export does not support pNFS\n", __func__); |
1985 | return NULL; | |
1986 | } | |
1987 | ||
b550a32e AK |
1988 | if (layout_type >= LAYOUT_TYPE_MAX || |
1989 | !(exp->ex_layout_types & (1 << layout_type))) { | |
9cf514cc CH |
1990 | dprintk("%s: layout type %d not supported\n", |
1991 | __func__, layout_type); | |
1992 | return NULL; | |
1993 | } | |
1994 | ||
1995 | return nfsd4_layout_ops[layout_type]; | |
1996 | } | |
1997 | ||
1998 | static __be32 | |
1999 | nfsd4_getdeviceinfo(struct svc_rqst *rqstp, | |
eb69853d | 2000 | struct nfsd4_compound_state *cstate, union nfsd4_op_u *u) |
9cf514cc | 2001 | { |
eb69853d | 2002 | struct nfsd4_getdeviceinfo *gdp = &u->getdeviceinfo; |
9cf514cc CH |
2003 | const struct nfsd4_layout_ops *ops; |
2004 | struct nfsd4_deviceid_map *map; | |
2005 | struct svc_export *exp; | |
2006 | __be32 nfserr; | |
2007 | ||
2008 | dprintk("%s: layout_type %u dev_id [0x%llx:0x%x] maxcnt %u\n", | |
2009 | __func__, | |
2010 | gdp->gd_layout_type, | |
2011 | gdp->gd_devid.fsid_idx, gdp->gd_devid.generation, | |
2012 | gdp->gd_maxcount); | |
2013 | ||
2014 | map = nfsd4_find_devid_map(gdp->gd_devid.fsid_idx); | |
2015 | if (!map) { | |
2016 | dprintk("%s: couldn't find device ID to export mapping!\n", | |
2017 | __func__); | |
2018 | return nfserr_noent; | |
2019 | } | |
2020 | ||
2021 | exp = rqst_exp_find(rqstp, map->fsid_type, map->fsid); | |
2022 | if (IS_ERR(exp)) { | |
2023 | dprintk("%s: could not find device id\n", __func__); | |
2024 | return nfserr_noent; | |
2025 | } | |
2026 | ||
2027 | nfserr = nfserr_layoutunavailable; | |
2028 | ops = nfsd4_layout_verify(exp, gdp->gd_layout_type); | |
2029 | if (!ops) | |
2030 | goto out; | |
2031 | ||
2032 | nfserr = nfs_ok; | |
f99d4fbd CH |
2033 | if (gdp->gd_maxcount != 0) { |
2034 | nfserr = ops->proc_getdeviceinfo(exp->ex_path.mnt->mnt_sb, | |
ec59659b | 2035 | rqstp, cstate->clp, gdp); |
f99d4fbd | 2036 | } |
9cf514cc CH |
2037 | |
2038 | gdp->gd_notify_types &= ops->notify_types; | |
9cf514cc | 2039 | out: |
a1420384 | 2040 | exp_put(exp); |
9cf514cc CH |
2041 | return nfserr; |
2042 | } | |
2043 | ||
34b1744c BF |
2044 | static void |
2045 | nfsd4_getdeviceinfo_release(union nfsd4_op_u *u) | |
2046 | { | |
2047 | kfree(u->getdeviceinfo.gd_device); | |
2048 | } | |
2049 | ||
9cf514cc CH |
2050 | static __be32 |
2051 | nfsd4_layoutget(struct svc_rqst *rqstp, | |
eb69853d | 2052 | struct nfsd4_compound_state *cstate, union nfsd4_op_u *u) |
9cf514cc | 2053 | { |
eb69853d | 2054 | struct nfsd4_layoutget *lgp = &u->layoutget; |
9cf514cc CH |
2055 | struct svc_fh *current_fh = &cstate->current_fh; |
2056 | const struct nfsd4_layout_ops *ops; | |
2057 | struct nfs4_layout_stateid *ls; | |
2058 | __be32 nfserr; | |
66282ec1 | 2059 | int accmode = NFSD_MAY_READ_IF_EXEC; |
9cf514cc CH |
2060 | |
2061 | switch (lgp->lg_seg.iomode) { | |
2062 | case IOMODE_READ: | |
66282ec1 | 2063 | accmode |= NFSD_MAY_READ; |
9cf514cc CH |
2064 | break; |
2065 | case IOMODE_RW: | |
66282ec1 | 2066 | accmode |= NFSD_MAY_READ | NFSD_MAY_WRITE; |
9cf514cc CH |
2067 | break; |
2068 | default: | |
2069 | dprintk("%s: invalid iomode %d\n", | |
2070 | __func__, lgp->lg_seg.iomode); | |
2071 | nfserr = nfserr_badiomode; | |
2072 | goto out; | |
2073 | } | |
2074 | ||
2075 | nfserr = fh_verify(rqstp, current_fh, 0, accmode); | |
2076 | if (nfserr) | |
2077 | goto out; | |
2078 | ||
2079 | nfserr = nfserr_layoutunavailable; | |
2080 | ops = nfsd4_layout_verify(current_fh->fh_export, lgp->lg_layout_type); | |
2081 | if (!ops) | |
2082 | goto out; | |
2083 | ||
2084 | /* | |
2085 | * Verify minlength and range as per RFC5661: | |
2086 | * o If loga_length is less than loga_minlength, | |
2087 | * the metadata server MUST return NFS4ERR_INVAL. | |
2088 | * o If the sum of loga_offset and loga_minlength exceeds | |
2089 | * NFS4_UINT64_MAX, and loga_minlength is not | |
2090 | * NFS4_UINT64_MAX, the error NFS4ERR_INVAL MUST result. | |
2091 | * o If the sum of loga_offset and loga_length exceeds | |
2092 | * NFS4_UINT64_MAX, and loga_length is not NFS4_UINT64_MAX, | |
2093 | * the error NFS4ERR_INVAL MUST result. | |
2094 | */ | |
2095 | nfserr = nfserr_inval; | |
2096 | if (lgp->lg_seg.length < lgp->lg_minlength || | |
2097 | (lgp->lg_minlength != NFS4_MAX_UINT64 && | |
2098 | lgp->lg_minlength > NFS4_MAX_UINT64 - lgp->lg_seg.offset) || | |
2099 | (lgp->lg_seg.length != NFS4_MAX_UINT64 && | |
2100 | lgp->lg_seg.length > NFS4_MAX_UINT64 - lgp->lg_seg.offset)) | |
2101 | goto out; | |
2102 | if (lgp->lg_seg.length == 0) | |
2103 | goto out; | |
2104 | ||
2105 | nfserr = nfsd4_preprocess_layout_stateid(rqstp, cstate, &lgp->lg_sid, | |
2106 | true, lgp->lg_layout_type, &ls); | |
31ef83dc | 2107 | if (nfserr) { |
f394b62b | 2108 | trace_nfsd_layout_get_lookup_fail(&lgp->lg_sid); |
9cf514cc | 2109 | goto out; |
31ef83dc | 2110 | } |
9cf514cc | 2111 | |
c5c707f9 CH |
2112 | nfserr = nfserr_recallconflict; |
2113 | if (atomic_read(&ls->ls_stid.sc_file->fi_lo_recalls)) | |
2114 | goto out_put_stid; | |
2115 | ||
2b0143b5 | 2116 | nfserr = ops->proc_layoutget(d_inode(current_fh->fh_dentry), |
9cf514cc CH |
2117 | current_fh, lgp); |
2118 | if (nfserr) | |
2119 | goto out_put_stid; | |
2120 | ||
2121 | nfserr = nfsd4_insert_layout(lgp, ls); | |
2122 | ||
2123 | out_put_stid: | |
cc8a5532 | 2124 | mutex_unlock(&ls->ls_mutex); |
9cf514cc CH |
2125 | nfs4_put_stid(&ls->ls_stid); |
2126 | out: | |
2127 | return nfserr; | |
2128 | } | |
2129 | ||
34b1744c BF |
2130 | static void |
2131 | nfsd4_layoutget_release(union nfsd4_op_u *u) | |
2132 | { | |
2133 | kfree(u->layoutget.lg_content); | |
2134 | } | |
2135 | ||
9cf514cc CH |
2136 | static __be32 |
2137 | nfsd4_layoutcommit(struct svc_rqst *rqstp, | |
eb69853d | 2138 | struct nfsd4_compound_state *cstate, union nfsd4_op_u *u) |
9cf514cc | 2139 | { |
eb69853d | 2140 | struct nfsd4_layoutcommit *lcp = &u->layoutcommit; |
9cf514cc CH |
2141 | const struct nfsd4_layout_seg *seg = &lcp->lc_seg; |
2142 | struct svc_fh *current_fh = &cstate->current_fh; | |
2143 | const struct nfsd4_layout_ops *ops; | |
2144 | loff_t new_size = lcp->lc_last_wr + 1; | |
2145 | struct inode *inode; | |
2146 | struct nfs4_layout_stateid *ls; | |
2147 | __be32 nfserr; | |
2148 | ||
2149 | nfserr = fh_verify(rqstp, current_fh, 0, NFSD_MAY_WRITE); | |
2150 | if (nfserr) | |
2151 | goto out; | |
2152 | ||
2153 | nfserr = nfserr_layoutunavailable; | |
2154 | ops = nfsd4_layout_verify(current_fh->fh_export, lcp->lc_layout_type); | |
2155 | if (!ops) | |
2156 | goto out; | |
2b0143b5 | 2157 | inode = d_inode(current_fh->fh_dentry); |
9cf514cc CH |
2158 | |
2159 | nfserr = nfserr_inval; | |
2160 | if (new_size <= seg->offset) { | |
2161 | dprintk("pnfsd: last write before layout segment\n"); | |
2162 | goto out; | |
2163 | } | |
2164 | if (new_size > seg->offset + seg->length) { | |
2165 | dprintk("pnfsd: last write beyond layout segment\n"); | |
2166 | goto out; | |
2167 | } | |
2168 | if (!lcp->lc_newoffset && new_size > i_size_read(inode)) { | |
2169 | dprintk("pnfsd: layoutcommit beyond EOF\n"); | |
2170 | goto out; | |
2171 | } | |
2172 | ||
2173 | nfserr = nfsd4_preprocess_layout_stateid(rqstp, cstate, &lcp->lc_sid, | |
2174 | false, lcp->lc_layout_type, | |
2175 | &ls); | |
2176 | if (nfserr) { | |
f394b62b | 2177 | trace_nfsd_layout_commit_lookup_fail(&lcp->lc_sid); |
9cf514cc CH |
2178 | /* fixup error code as per RFC5661 */ |
2179 | if (nfserr == nfserr_bad_stateid) | |
2180 | nfserr = nfserr_badlayout; | |
2181 | goto out; | |
2182 | } | |
2183 | ||
cc8a5532 JL |
2184 | /* LAYOUTCOMMIT does not require any serialization */ |
2185 | mutex_unlock(&ls->ls_mutex); | |
2186 | ||
9cf514cc CH |
2187 | if (new_size > i_size_read(inode)) { |
2188 | lcp->lc_size_chg = 1; | |
2189 | lcp->lc_newsize = new_size; | |
2190 | } else { | |
2191 | lcp->lc_size_chg = 0; | |
2192 | } | |
2193 | ||
d8398fc1 | 2194 | nfserr = ops->proc_layoutcommit(inode, lcp); |
9cf514cc CH |
2195 | nfs4_put_stid(&ls->ls_stid); |
2196 | out: | |
2197 | return nfserr; | |
2198 | } | |
2199 | ||
2200 | static __be32 | |
2201 | nfsd4_layoutreturn(struct svc_rqst *rqstp, | |
eb69853d | 2202 | struct nfsd4_compound_state *cstate, union nfsd4_op_u *u) |
9cf514cc | 2203 | { |
eb69853d | 2204 | struct nfsd4_layoutreturn *lrp = &u->layoutreturn; |
9cf514cc CH |
2205 | struct svc_fh *current_fh = &cstate->current_fh; |
2206 | __be32 nfserr; | |
2207 | ||
2208 | nfserr = fh_verify(rqstp, current_fh, 0, NFSD_MAY_NOP); | |
2209 | if (nfserr) | |
2210 | goto out; | |
2211 | ||
2212 | nfserr = nfserr_layoutunavailable; | |
2213 | if (!nfsd4_layout_verify(current_fh->fh_export, lrp->lr_layout_type)) | |
2214 | goto out; | |
2215 | ||
2216 | switch (lrp->lr_seg.iomode) { | |
2217 | case IOMODE_READ: | |
2218 | case IOMODE_RW: | |
2219 | case IOMODE_ANY: | |
2220 | break; | |
2221 | default: | |
2222 | dprintk("%s: invalid iomode %d\n", __func__, | |
2223 | lrp->lr_seg.iomode); | |
2224 | nfserr = nfserr_inval; | |
2225 | goto out; | |
2226 | } | |
2227 | ||
2228 | switch (lrp->lr_return_type) { | |
2229 | case RETURN_FILE: | |
2230 | nfserr = nfsd4_return_file_layouts(rqstp, cstate, lrp); | |
2231 | break; | |
2232 | case RETURN_FSID: | |
2233 | case RETURN_ALL: | |
2234 | nfserr = nfsd4_return_client_layouts(rqstp, cstate, lrp); | |
2235 | break; | |
2236 | default: | |
2237 | dprintk("%s: invalid return_type %d\n", __func__, | |
2238 | lrp->lr_return_type); | |
2239 | nfserr = nfserr_inval; | |
2240 | break; | |
2241 | } | |
2242 | out: | |
2243 | return nfserr; | |
2244 | } | |
2245 | #endif /* CONFIG_NFSD_PNFS */ | |
2246 | ||
23e50fe3 FL |
2247 | static __be32 |
2248 | nfsd4_getxattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
2249 | union nfsd4_op_u *u) | |
2250 | { | |
2251 | struct nfsd4_getxattr *getxattr = &u->getxattr; | |
2252 | ||
2253 | return nfsd_getxattr(rqstp, &cstate->current_fh, | |
2254 | getxattr->getxa_name, &getxattr->getxa_buf, | |
2255 | &getxattr->getxa_len); | |
2256 | } | |
2257 | ||
2258 | static __be32 | |
2259 | nfsd4_setxattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
2260 | union nfsd4_op_u *u) | |
2261 | { | |
2262 | struct nfsd4_setxattr *setxattr = &u->setxattr; | |
2263 | __be32 ret; | |
2264 | ||
2265 | if (opens_in_grace(SVC_NET(rqstp))) | |
2266 | return nfserr_grace; | |
2267 | ||
2268 | ret = nfsd_setxattr(rqstp, &cstate->current_fh, setxattr->setxa_name, | |
2269 | setxattr->setxa_buf, setxattr->setxa_len, | |
2270 | setxattr->setxa_flags); | |
2271 | ||
2272 | if (!ret) | |
2273 | set_change_info(&setxattr->setxa_cinfo, &cstate->current_fh); | |
2274 | ||
2275 | return ret; | |
2276 | } | |
2277 | ||
2278 | static __be32 | |
2279 | nfsd4_listxattrs(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
2280 | union nfsd4_op_u *u) | |
2281 | { | |
2282 | /* | |
2283 | * Get the entire list, then copy out only the user attributes | |
2284 | * in the encode function. | |
2285 | */ | |
2286 | return nfsd_listxattr(rqstp, &cstate->current_fh, | |
2287 | &u->listxattrs.lsxa_buf, &u->listxattrs.lsxa_len); | |
2288 | } | |
2289 | ||
2290 | static __be32 | |
2291 | nfsd4_removexattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, | |
2292 | union nfsd4_op_u *u) | |
2293 | { | |
2294 | struct nfsd4_removexattr *removexattr = &u->removexattr; | |
2295 | __be32 ret; | |
2296 | ||
2297 | if (opens_in_grace(SVC_NET(rqstp))) | |
2298 | return nfserr_grace; | |
2299 | ||
2300 | ret = nfsd_removexattr(rqstp, &cstate->current_fh, | |
2301 | removexattr->rmxa_name); | |
2302 | ||
2303 | if (!ret) | |
2304 | set_change_info(&removexattr->rmxa_cinfo, &cstate->current_fh); | |
2305 | ||
2306 | return ret; | |
2307 | } | |
2308 | ||
1da177e4 LT |
2309 | /* |
2310 | * NULL call. | |
2311 | */ | |
7111c66e | 2312 | static __be32 |
a6beb732 | 2313 | nfsd4_proc_null(struct svc_rqst *rqstp) |
1da177e4 | 2314 | { |
cc028a10 | 2315 | return rpc_success; |
1da177e4 LT |
2316 | } |
2317 | ||
e2b20950 SA |
2318 | static inline void nfsd4_increment_op_stats(u32 opnum) |
2319 | { | |
2320 | if (opnum >= FIRST_NFS4_OP && opnum <= LAST_NFS4_OP) | |
e567b98c | 2321 | percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_NFS4_OP(opnum)]); |
e2b20950 SA |
2322 | } |
2323 | ||
bb2a8b0c | 2324 | static const struct nfsd4_operation nfsd4_ops[]; |
b591480b | 2325 | |
f1c7f79b | 2326 | static const char *nfsd4_op_name(unsigned opnum); |
b001a1b6 | 2327 | |
f9bb94c4 | 2328 | /* |
57716355 | 2329 | * Enforce NFSv4.1 COMPOUND ordering rules: |
f9bb94c4 | 2330 | * |
57716355 BF |
2331 | * Also note, enforced elsewhere: |
2332 | * - SEQUENCE other than as first op results in | |
2333 | * NFS4ERR_SEQUENCE_POS. (Enforced in nfsd4_sequence().) | |
1d1bc8f2 BF |
2334 | * - BIND_CONN_TO_SESSION must be the only op in its compound. |
2335 | * (Enforced in nfsd4_bind_conn_to_session().) | |
57716355 BF |
2336 | * - DESTROY_SESSION must be the final operation in a compound, if |
2337 | * sessionid's in SEQUENCE and DESTROY_SESSION are the same. | |
2338 | * (Enforced in nfsd4_destroy_session().) | |
f9bb94c4 | 2339 | */ |
57716355 | 2340 | static __be32 nfs41_check_op_ordering(struct nfsd4_compoundargs *args) |
f9bb94c4 | 2341 | { |
7a04cfda | 2342 | struct nfsd4_op *first_op = &args->ops[0]; |
57716355 BF |
2343 | |
2344 | /* These ordering requirements don't apply to NFSv4.0: */ | |
2345 | if (args->minorversion == 0) | |
2346 | return nfs_ok; | |
2347 | /* This is weird, but OK, not our problem: */ | |
2348 | if (args->opcnt == 0) | |
2349 | return nfs_ok; | |
7a04cfda | 2350 | if (first_op->status == nfserr_op_illegal) |
57716355 | 2351 | return nfs_ok; |
7a04cfda | 2352 | if (!(nfsd4_ops[first_op->opnum].op_flags & ALLOWED_AS_FIRST_OP)) |
57716355 | 2353 | return nfserr_op_not_in_session; |
7a04cfda | 2354 | if (first_op->opnum == OP_SEQUENCE) |
57716355 | 2355 | return nfs_ok; |
7a04cfda BF |
2356 | /* |
2357 | * So first_op is something allowed outside a session, like | |
2358 | * EXCHANGE_ID; but then it has to be the only op in the | |
2359 | * compound: | |
2360 | */ | |
57716355 BF |
2361 | if (args->opcnt != 1) |
2362 | return nfserr_not_only_op; | |
2363 | return nfs_ok; | |
f9bb94c4 AA |
2364 | } |
2365 | ||
f4f9ef4a | 2366 | const struct nfsd4_operation *OPDESC(struct nfsd4_op *op) |
22b03214 BF |
2367 | { |
2368 | return &nfsd4_ops[op->opnum]; | |
2369 | } | |
2370 | ||
1091006c BF |
2371 | bool nfsd4_cache_this_op(struct nfsd4_op *op) |
2372 | { | |
e372ba60 BF |
2373 | if (op->opnum == OP_ILLEGAL) |
2374 | return false; | |
c856694e | 2375 | return OPDESC(op)->op_flags & OP_CACHEME; |
1091006c BF |
2376 | } |
2377 | ||
68d93184 BF |
2378 | static bool need_wrongsec_check(struct svc_rqst *rqstp) |
2379 | { | |
2380 | struct nfsd4_compoundres *resp = rqstp->rq_resp; | |
2381 | struct nfsd4_compoundargs *argp = rqstp->rq_argp; | |
2382 | struct nfsd4_op *this = &argp->ops[resp->opcnt - 1]; | |
2383 | struct nfsd4_op *next = &argp->ops[resp->opcnt]; | |
bb2a8b0c CH |
2384 | const struct nfsd4_operation *thisd = OPDESC(this); |
2385 | const struct nfsd4_operation *nextd; | |
68d93184 | 2386 | |
68d93184 BF |
2387 | /* |
2388 | * Most ops check wronsec on our own; only the putfh-like ops | |
2389 | * have special rules. | |
2390 | */ | |
2391 | if (!(thisd->op_flags & OP_IS_PUTFH_LIKE)) | |
2392 | return false; | |
2393 | /* | |
2394 | * rfc 5661 2.6.3.1.1.6: don't bother erroring out a | |
2395 | * put-filehandle operation if we're not going to use the | |
2396 | * result: | |
2397 | */ | |
2398 | if (argp->opcnt == resp->opcnt) | |
2399 | return false; | |
51904b08 BF |
2400 | if (next->opnum == OP_ILLEGAL) |
2401 | return false; | |
68d93184 BF |
2402 | nextd = OPDESC(next); |
2403 | /* | |
2404 | * Rest of 2.6.3.1.1: certain operations will return WRONGSEC | |
2405 | * errors themselves as necessary; others should check for them | |
2406 | * now: | |
2407 | */ | |
2408 | return !(nextd->op_flags & OP_HANDLES_WRONGSEC); | |
2409 | } | |
2410 | ||
b9e8638e OK |
2411 | #ifdef CONFIG_NFSD_V4_2_INTER_SSC |
2412 | static void | |
2413 | check_if_stalefh_allowed(struct nfsd4_compoundargs *args) | |
2414 | { | |
2415 | struct nfsd4_op *op, *current_op = NULL, *saved_op = NULL; | |
2416 | struct nfsd4_copy *copy; | |
2417 | struct nfsd4_putfh *putfh; | |
2418 | int i; | |
2419 | ||
2420 | /* traverse all operation and if it's a COPY compound, mark the | |
2421 | * source filehandle to skip verification | |
2422 | */ | |
2423 | for (i = 0; i < args->opcnt; i++) { | |
2424 | op = &args->ops[i]; | |
2425 | if (op->opnum == OP_PUTFH) | |
2426 | current_op = op; | |
2427 | else if (op->opnum == OP_SAVEFH) | |
2428 | saved_op = current_op; | |
2429 | else if (op->opnum == OP_RESTOREFH) | |
2430 | current_op = saved_op; | |
2431 | else if (op->opnum == OP_COPY) { | |
2432 | copy = (struct nfsd4_copy *)&op->u; | |
2433 | if (!saved_op) { | |
2434 | op->status = nfserr_nofilehandle; | |
2435 | return; | |
2436 | } | |
2437 | putfh = (struct nfsd4_putfh *)&saved_op->u; | |
2438 | if (!copy->cp_intra) | |
2439 | putfh->no_verify = true; | |
2440 | } | |
2441 | } | |
2442 | } | |
2443 | #else | |
2444 | static void | |
2445 | check_if_stalefh_allowed(struct nfsd4_compoundargs *args) | |
2446 | { | |
2447 | } | |
2448 | #endif | |
2449 | ||
1da177e4 LT |
2450 | /* |
2451 | * COMPOUND call. | |
2452 | */ | |
7111c66e | 2453 | static __be32 |
a6beb732 | 2454 | nfsd4_proc_compound(struct svc_rqst *rqstp) |
1da177e4 | 2455 | { |
a6beb732 CH |
2456 | struct nfsd4_compoundargs *args = rqstp->rq_argp; |
2457 | struct nfsd4_compoundres *resp = rqstp->rq_resp; | |
1da177e4 | 2458 | struct nfsd4_op *op; |
e354d571 | 2459 | struct nfsd4_compound_state *cstate = &resp->cstate; |
4daeed25 KM |
2460 | struct svc_fh *current_fh = &cstate->current_fh; |
2461 | struct svc_fh *save_fh = &cstate->save_fh; | |
e333f3bb | 2462 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
b37ad28b | 2463 | __be32 status; |
1da177e4 | 2464 | |
bddfdbcd | 2465 | resp->xdr = &rqstp->rq_res_stream; |
3b0ebb25 | 2466 | resp->statusp = resp->xdr->p; |
bddfdbcd CL |
2467 | |
2468 | /* reserve space for: NFS status code */ | |
2469 | xdr_reserve_space(resp->xdr, XDR_UNIT); | |
2470 | ||
1da177e4 | 2471 | /* reserve space for: taglen, tag, and opcnt */ |
bddfdbcd | 2472 | xdr_reserve_space(resp->xdr, XDR_UNIT * 2 + args->taglen); |
1da177e4 LT |
2473 | resp->taglen = args->taglen; |
2474 | resp->tag = args->tag; | |
1da177e4 | 2475 | resp->rqstp = rqstp; |
4daeed25 | 2476 | cstate->minorversion = args->minorversion; |
4daeed25 KM |
2477 | fh_init(current_fh, NFS4_FHSIZE); |
2478 | fh_init(save_fh, NFS4_FHSIZE); | |
8ff30fa4 N |
2479 | /* |
2480 | * Don't use the deferral mechanism for NFSv4; compounds make it | |
2481 | * too hard to avoid non-idempotency problems. | |
2482 | */ | |
30660e04 | 2483 | clear_bit(RQ_USEDEFERRAL, &rqstp->rq_flags); |
1da177e4 LT |
2484 | |
2485 | /* | |
2486 | * According to RFC3010, this takes precedence over all other errors. | |
2487 | */ | |
2488 | status = nfserr_minor_vers_mismatch; | |
e333f3bb | 2489 | if (nfsd_minorversion(nn, args->minorversion, NFSD_TEST) <= 0) |
1da177e4 | 2490 | goto out; |
0078117c BF |
2491 | status = nfserr_resource; |
2492 | if (args->opcnt > NFSD_MAX_OPS_PER_COMPOUND) | |
2493 | goto out; | |
1da177e4 | 2494 | |
57716355 BF |
2495 | status = nfs41_check_op_ordering(args); |
2496 | if (status) { | |
f9bb94c4 | 2497 | op = &args->ops[0]; |
57716355 | 2498 | op->status = status; |
5b7b15ae | 2499 | resp->opcnt = 1; |
f9bb94c4 AA |
2500 | goto encode_op; |
2501 | } | |
b9e8638e | 2502 | check_if_stalefh_allowed(args); |
f9bb94c4 | 2503 | |
28df3d15 BF |
2504 | rqstp->rq_lease_breaker = (void **)&cstate->clp; |
2505 | ||
fff4080b | 2506 | trace_nfsd_compound(rqstp, args->opcnt); |
1da177e4 LT |
2507 | while (!status && resp->opcnt < args->opcnt) { |
2508 | op = &args->ops[resp->opcnt++]; | |
2509 | ||
2510 | /* | |
2511 | * The XDR decode routines may have pre-set op->status; | |
2512 | * for example, if there is a miscellaneous XDR error | |
2513 | * it will be set to nfserr_bad_xdr. | |
2514 | */ | |
9d313b17 BF |
2515 | if (op->status) { |
2516 | if (op->opnum == OP_OPEN) | |
2517 | op->status = nfsd4_open_omfg(rqstp, cstate, op); | |
1da177e4 | 2518 | goto encode_op; |
9d313b17 | 2519 | } |
b9e8638e OK |
2520 | if (!current_fh->fh_dentry && |
2521 | !HAS_FH_FLAG(current_fh, NFSD4_FH_FOREIGN)) { | |
f4f9ef4a | 2522 | if (!(op->opdesc->op_flags & ALLOWED_WITHOUT_FH)) { |
42ca0993 BF |
2523 | op->status = nfserr_nofilehandle; |
2524 | goto encode_op; | |
2525 | } | |
b9e8638e OK |
2526 | } else if (current_fh->fh_export && |
2527 | current_fh->fh_export->ex_fslocs.migrated && | |
f4f9ef4a | 2528 | !(op->opdesc->op_flags & ALLOWED_ON_ABSENT_FS)) { |
42ca0993 | 2529 | op->status = nfserr_moved; |
1da177e4 LT |
2530 | goto encode_op; |
2531 | } | |
b591480b | 2532 | |
2336745e KM |
2533 | fh_clear_wcc(current_fh); |
2534 | ||
58e7b33a | 2535 | /* If op is non-idempotent */ |
f4f9ef4a | 2536 | if (op->opdesc->op_flags & OP_MODIFIES_SOMETHING) { |
4c69d585 | 2537 | /* |
a8095f7e BF |
2538 | * Don't execute this op if we couldn't encode a |
2539 | * succesful reply: | |
2540 | */ | |
f4f9ef4a | 2541 | u32 plen = op->opdesc->op_rsize_bop(rqstp, op); |
a8095f7e BF |
2542 | /* |
2543 | * Plus if there's another operation, make sure | |
4c69d585 BF |
2544 | * we'll have space to at least encode an error: |
2545 | */ | |
2546 | if (resp->opcnt < args->opcnt) | |
2547 | plen += COMPOUND_ERR_SLACK_SPACE; | |
58e7b33a MJ |
2548 | op->status = nfsd4_check_resp_size(resp, plen); |
2549 | } | |
2550 | ||
2551 | if (op->status) | |
2552 | goto encode_op; | |
2553 | ||
f4f9ef4a BF |
2554 | if (op->opdesc->op_get_currentstateid) |
2555 | op->opdesc->op_get_currentstateid(cstate, &op->u); | |
2556 | op->status = op->opdesc->op_func(rqstp, cstate, &op->u); | |
1da177e4 | 2557 | |
9a307403 BF |
2558 | /* Only from SEQUENCE */ |
2559 | if (cstate->status == nfserr_replay_cache) { | |
2560 | dprintk("%s NFS4.1 replay from cache\n", __func__); | |
2561 | status = op->status; | |
2562 | goto out; | |
2563 | } | |
8b70484c | 2564 | if (!op->status) { |
f4f9ef4a BF |
2565 | if (op->opdesc->op_set_currentstateid) |
2566 | op->opdesc->op_set_currentstateid(cstate, &op->u); | |
8b70484c | 2567 | |
f4f9ef4a | 2568 | if (op->opdesc->op_flags & OP_CLEAR_STATEID) |
37c593c5 | 2569 | clear_current_stateid(cstate); |
8b70484c | 2570 | |
d781e3df BF |
2571 | if (current_fh->fh_export && |
2572 | need_wrongsec_check(rqstp)) | |
4daeed25 | 2573 | op->status = check_nfsd_access(current_fh->fh_export, rqstp); |
8b70484c | 2574 | } |
1da177e4 | 2575 | encode_op: |
a90b061c | 2576 | if (op->status == nfserr_replay_me) { |
a4f1706a | 2577 | op->replay = &cstate->replay_owner->so_replay; |
bddfdbcd | 2578 | nfsd4_encode_replay(resp->xdr, op); |
1da177e4 LT |
2579 | status = op->status = op->replay->rp_status; |
2580 | } else { | |
2581 | nfsd4_encode_operation(resp, op); | |
2582 | status = op->status; | |
2583 | } | |
0407717d | 2584 | |
fff4080b CL |
2585 | trace_nfsd_compound_status(args->opcnt, resp->opcnt, status, |
2586 | nfsd4_op_name(op->opnum)); | |
0407717d | 2587 | |
58fb12e6 | 2588 | nfsd4_cstate_clear_replay(cstate); |
e2b20950 | 2589 | nfsd4_increment_op_stats(op->opnum); |
1da177e4 LT |
2590 | } |
2591 | ||
4daeed25 KM |
2592 | fh_put(current_fh); |
2593 | fh_put(save_fh); | |
2594 | BUG_ON(cstate->replay_owner); | |
1da177e4 | 2595 | out: |
cc028a10 | 2596 | cstate->status = status; |
2f425878 | 2597 | /* Reset deferral mechanism for RPC deferrals */ |
30660e04 | 2598 | set_bit(RQ_USEDEFERRAL, &rqstp->rq_flags); |
cc028a10 | 2599 | return rpc_success; |
1da177e4 LT |
2600 | } |
2601 | ||
58e7b33a MJ |
2602 | #define op_encode_hdr_size (2) |
2603 | #define op_encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE)) | |
2604 | #define op_encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE)) | |
2605 | #define op_encode_change_info_maxsz (5) | |
2606 | #define nfs4_fattr_bitmap_maxsz (4) | |
2607 | ||
8c7424cf BF |
2608 | /* We'll fall back on returning no lockowner if run out of space: */ |
2609 | #define op_encode_lockowner_maxsz (0) | |
58e7b33a MJ |
2610 | #define op_encode_lock_denied_maxsz (8 + op_encode_lockowner_maxsz) |
2611 | ||
2612 | #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) | |
2613 | ||
2614 | #define op_encode_ace_maxsz (3 + nfs4_owner_maxsz) | |
2615 | #define op_encode_delegation_maxsz (1 + op_encode_stateid_maxsz + 1 + \ | |
2616 | op_encode_ace_maxsz) | |
2617 | ||
2618 | #define op_encode_channel_attrs_maxsz (6 + 1 + 1) | |
2619 | ||
2620 | static inline u32 nfsd4_only_status_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2621 | { | |
2622 | return (op_encode_hdr_size) * sizeof(__be32); | |
2623 | } | |
2624 | ||
2625 | static inline u32 nfsd4_status_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2626 | { | |
2627 | return (op_encode_hdr_size + op_encode_stateid_maxsz)* sizeof(__be32); | |
2628 | } | |
2629 | ||
2282cd2c KM |
2630 | static inline u32 nfsd4_access_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2631 | { | |
2632 | /* ac_supported, ac_resp_access */ | |
2633 | return (op_encode_hdr_size + 2)* sizeof(__be32); | |
2634 | } | |
2635 | ||
58e7b33a MJ |
2636 | static inline u32 nfsd4_commit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2637 | { | |
2638 | return (op_encode_hdr_size + op_encode_verifier_maxsz) * sizeof(__be32); | |
2639 | } | |
2640 | ||
2641 | static inline u32 nfsd4_create_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2642 | { | |
2643 | return (op_encode_hdr_size + op_encode_change_info_maxsz | |
2644 | + nfs4_fattr_bitmap_maxsz) * sizeof(__be32); | |
2645 | } | |
2646 | ||
b86cef60 BF |
2647 | /* |
2648 | * Note since this is an idempotent operation we won't insist on failing | |
2649 | * the op prematurely if the estimate is too large. We may turn off splice | |
2650 | * reads unnecessarily. | |
2651 | */ | |
2652 | static inline u32 nfsd4_getattr_rsize(struct svc_rqst *rqstp, | |
2653 | struct nfsd4_op *op) | |
2654 | { | |
2655 | u32 *bmap = op->u.getattr.ga_bmval; | |
2656 | u32 bmap0 = bmap[0], bmap1 = bmap[1], bmap2 = bmap[2]; | |
2657 | u32 ret = 0; | |
2658 | ||
2659 | if (bmap0 & FATTR4_WORD0_ACL) | |
2660 | return svc_max_payload(rqstp); | |
2661 | if (bmap0 & FATTR4_WORD0_FS_LOCATIONS) | |
2662 | return svc_max_payload(rqstp); | |
2663 | ||
2664 | if (bmap1 & FATTR4_WORD1_OWNER) { | |
2665 | ret += IDMAP_NAMESZ + 4; | |
2666 | bmap1 &= ~FATTR4_WORD1_OWNER; | |
2667 | } | |
2668 | if (bmap1 & FATTR4_WORD1_OWNER_GROUP) { | |
2669 | ret += IDMAP_NAMESZ + 4; | |
2670 | bmap1 &= ~FATTR4_WORD1_OWNER_GROUP; | |
2671 | } | |
2672 | if (bmap0 & FATTR4_WORD0_FILEHANDLE) { | |
2673 | ret += NFS4_FHSIZE + 4; | |
2674 | bmap0 &= ~FATTR4_WORD0_FILEHANDLE; | |
2675 | } | |
2676 | if (bmap2 & FATTR4_WORD2_SECURITY_LABEL) { | |
1ec8c0c4 | 2677 | ret += NFS4_MAXLABELLEN + 12; |
b86cef60 BF |
2678 | bmap2 &= ~FATTR4_WORD2_SECURITY_LABEL; |
2679 | } | |
2680 | /* | |
2681 | * Largest of remaining attributes are 16 bytes (e.g., | |
2682 | * supported_attributes) | |
2683 | */ | |
2684 | ret += 16 * (hweight32(bmap0) + hweight32(bmap1) + hweight32(bmap2)); | |
2685 | /* bitmask, length */ | |
2686 | ret += 20; | |
2687 | return ret; | |
2688 | } | |
2689 | ||
2282cd2c KM |
2690 | static inline u32 nfsd4_getfh_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2691 | { | |
2692 | return (op_encode_hdr_size + 1) * sizeof(__be32) + NFS4_FHSIZE; | |
2693 | } | |
2694 | ||
58e7b33a MJ |
2695 | static inline u32 nfsd4_link_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2696 | { | |
2697 | return (op_encode_hdr_size + op_encode_change_info_maxsz) | |
2698 | * sizeof(__be32); | |
2699 | } | |
2700 | ||
2701 | static inline u32 nfsd4_lock_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2702 | { | |
2703 | return (op_encode_hdr_size + op_encode_lock_denied_maxsz) | |
2704 | * sizeof(__be32); | |
2705 | } | |
2706 | ||
2707 | static inline u32 nfsd4_open_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2708 | { | |
2709 | return (op_encode_hdr_size + op_encode_stateid_maxsz | |
2710 | + op_encode_change_info_maxsz + 1 | |
2711 | + nfs4_fattr_bitmap_maxsz | |
2712 | + op_encode_delegation_maxsz) * sizeof(__be32); | |
2713 | } | |
2714 | ||
2715 | static inline u32 nfsd4_read_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2716 | { | |
2717 | u32 maxcount = 0, rlen = 0; | |
2718 | ||
2719 | maxcount = svc_max_payload(rqstp); | |
3c7aa15d | 2720 | rlen = min(op->u.read.rd_length, maxcount); |
58e7b33a | 2721 | |
622f560e | 2722 | return (op_encode_hdr_size + 2 + XDR_QUADLEN(rlen)) * sizeof(__be32); |
58e7b33a MJ |
2723 | } |
2724 | ||
528b8493 AS |
2725 | static inline u32 nfsd4_read_plus_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2726 | { | |
2727 | u32 maxcount = svc_max_payload(rqstp); | |
2728 | u32 rlen = min(op->u.read.rd_length, maxcount); | |
2729 | /* | |
2730 | * If we detect that the file changed during hole encoding, then we | |
2731 | * recover by encoding the remaining reply as data. This means we need | |
2732 | * to set aside enough room to encode two data segments. | |
2733 | */ | |
2734 | u32 seg_len = 2 * (1 + 2 + 1); | |
2735 | ||
2736 | return (op_encode_hdr_size + 2 + seg_len + XDR_QUADLEN(rlen)) * sizeof(__be32); | |
2737 | } | |
2738 | ||
58e7b33a MJ |
2739 | static inline u32 nfsd4_readdir_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2740 | { | |
3c7aa15d | 2741 | u32 maxcount = 0, rlen = 0; |
58e7b33a | 2742 | |
3c7aa15d KM |
2743 | maxcount = svc_max_payload(rqstp); |
2744 | rlen = min(op->u.readdir.rd_maxcount, maxcount); | |
58e7b33a | 2745 | |
561f0ed4 BF |
2746 | return (op_encode_hdr_size + op_encode_verifier_maxsz + |
2747 | XDR_QUADLEN(rlen)) * sizeof(__be32); | |
58e7b33a MJ |
2748 | } |
2749 | ||
2282cd2c KM |
2750 | static inline u32 nfsd4_readlink_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2751 | { | |
2752 | return (op_encode_hdr_size + 1) * sizeof(__be32) + PAGE_SIZE; | |
2753 | } | |
2754 | ||
58e7b33a MJ |
2755 | static inline u32 nfsd4_remove_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2756 | { | |
2757 | return (op_encode_hdr_size + op_encode_change_info_maxsz) | |
2758 | * sizeof(__be32); | |
2759 | } | |
2760 | ||
2761 | static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2762 | { | |
2763 | return (op_encode_hdr_size + op_encode_change_info_maxsz | |
2764 | + op_encode_change_info_maxsz) * sizeof(__be32); | |
2765 | } | |
2766 | ||
ccae70a9 BF |
2767 | static inline u32 nfsd4_sequence_rsize(struct svc_rqst *rqstp, |
2768 | struct nfsd4_op *op) | |
2769 | { | |
d1d84c96 BF |
2770 | return (op_encode_hdr_size |
2771 | + XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) * sizeof(__be32); | |
ccae70a9 BF |
2772 | } |
2773 | ||
2282cd2c KM |
2774 | static inline u32 nfsd4_test_stateid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2775 | { | |
2776 | return (op_encode_hdr_size + 1 + op->u.test_stateid.ts_num_ids) | |
2777 | * sizeof(__be32); | |
2778 | } | |
2779 | ||
58e7b33a MJ |
2780 | static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2781 | { | |
2782 | return (op_encode_hdr_size + nfs4_fattr_bitmap_maxsz) * sizeof(__be32); | |
2783 | } | |
2784 | ||
2282cd2c KM |
2785 | static inline u32 nfsd4_secinfo_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2786 | { | |
2787 | return (op_encode_hdr_size + RPC_AUTH_MAXFLAVOR * | |
2788 | (4 + XDR_QUADLEN(GSS_OID_MAX_LEN))) * sizeof(__be32); | |
2789 | } | |
2790 | ||
58e7b33a MJ |
2791 | static inline u32 nfsd4_setclientid_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2792 | { | |
480efaee BF |
2793 | return (op_encode_hdr_size + 2 + XDR_QUADLEN(NFS4_VERIFIER_SIZE)) * |
2794 | sizeof(__be32); | |
58e7b33a MJ |
2795 | } |
2796 | ||
2797 | static inline u32 nfsd4_write_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2798 | { | |
f34e432b | 2799 | return (op_encode_hdr_size + 2 + op_encode_verifier_maxsz) * sizeof(__be32); |
58e7b33a MJ |
2800 | } |
2801 | ||
2802 | static inline u32 nfsd4_exchange_id_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2803 | { | |
2804 | return (op_encode_hdr_size + 2 + 1 + /* eir_clientid, eir_sequenceid */\ | |
a8bb84bc KM |
2805 | 1 + 1 + /* eir_flags, spr_how */\ |
2806 | 4 + /* spo_must_enforce & _allow with bitmap */\ | |
58e7b33a MJ |
2807 | 2 + /*eir_server_owner.so_minor_id */\ |
2808 | /* eir_server_owner.so_major_id<> */\ | |
2809 | XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\ | |
2810 | /* eir_server_scope<> */\ | |
2811 | XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 +\ | |
2812 | 1 + /* eir_server_impl_id array length */\ | |
2813 | 0 /* ignored eir_server_impl_id contents */) * sizeof(__be32); | |
2814 | } | |
2815 | ||
2816 | static inline u32 nfsd4_bind_conn_to_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2817 | { | |
2818 | return (op_encode_hdr_size + \ | |
2819 | XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* bctsr_sessid */\ | |
2820 | 2 /* bctsr_dir, use_conn_in_rdma_mode */) * sizeof(__be32); | |
2821 | } | |
2822 | ||
2823 | static inline u32 nfsd4_create_session_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2824 | { | |
2825 | return (op_encode_hdr_size + \ | |
2826 | XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + /* sessionid */\ | |
2827 | 2 + /* csr_sequence, csr_flags */\ | |
2828 | op_encode_channel_attrs_maxsz + \ | |
2829 | op_encode_channel_attrs_maxsz) * sizeof(__be32); | |
2830 | } | |
2831 | ||
29ae7f9d AS |
2832 | static inline u32 nfsd4_copy_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2833 | { | |
2834 | return (op_encode_hdr_size + | |
2835 | 1 /* wr_callback */ + | |
2836 | op_encode_stateid_maxsz /* wr_callback */ + | |
2837 | 2 /* wr_count */ + | |
2838 | 1 /* wr_committed */ + | |
2839 | op_encode_verifier_maxsz + | |
2840 | 1 /* cr_consecutive */ + | |
2841 | 1 /* cr_synchronous */) * sizeof(__be32); | |
2842 | } | |
2843 | ||
6308bc98 OK |
2844 | static inline u32 nfsd4_offload_status_rsize(struct svc_rqst *rqstp, |
2845 | struct nfsd4_op *op) | |
2846 | { | |
2847 | return (op_encode_hdr_size + | |
2848 | 2 /* osr_count */ + | |
2849 | 1 /* osr_complete<1> optional 0 for now */) * sizeof(__be32); | |
2850 | } | |
2851 | ||
51911868 OK |
2852 | static inline u32 nfsd4_copy_notify_rsize(struct svc_rqst *rqstp, |
2853 | struct nfsd4_op *op) | |
2854 | { | |
2855 | return (op_encode_hdr_size + | |
2856 | 3 /* cnr_lease_time */ + | |
2857 | 1 /* We support one cnr_source_server */ + | |
2858 | 1 /* cnr_stateid seq */ + | |
2859 | op_encode_stateid_maxsz /* cnr_stateid */ + | |
2860 | 1 /* num cnr_source_server*/ + | |
2861 | 1 /* nl4_type */ + | |
2862 | 1 /* nl4 size */ + | |
2863 | XDR_QUADLEN(NFS4_OPAQUE_LIMIT) /*nl4_loc + nl4_loc_sz */) | |
2864 | * sizeof(__be32); | |
2865 | } | |
2866 | ||
9cf514cc | 2867 | #ifdef CONFIG_NFSD_PNFS |
2282cd2c KM |
2868 | static inline u32 nfsd4_getdeviceinfo_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) |
2869 | { | |
2870 | u32 maxcount = 0, rlen = 0; | |
2871 | ||
2872 | maxcount = svc_max_payload(rqstp); | |
2873 | rlen = min(op->u.getdeviceinfo.gd_maxcount, maxcount); | |
2874 | ||
2875 | return (op_encode_hdr_size + | |
2876 | 1 /* gd_layout_type*/ + | |
2877 | XDR_QUADLEN(rlen) + | |
2878 | 2 /* gd_notify_types */) * sizeof(__be32); | |
2879 | } | |
2880 | ||
9cf514cc CH |
2881 | /* |
2882 | * At this stage we don't really know what layout driver will handle the request, | |
2883 | * so we need to define an arbitrary upper bound here. | |
2884 | */ | |
2885 | #define MAX_LAYOUT_SIZE 128 | |
2886 | static inline u32 nfsd4_layoutget_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2887 | { | |
2888 | return (op_encode_hdr_size + | |
2889 | 1 /* logr_return_on_close */ + | |
2890 | op_encode_stateid_maxsz + | |
2891 | 1 /* nr of layouts */ + | |
2892 | MAX_LAYOUT_SIZE) * sizeof(__be32); | |
2893 | } | |
2894 | ||
2895 | static inline u32 nfsd4_layoutcommit_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2896 | { | |
2897 | return (op_encode_hdr_size + | |
2898 | 1 /* locr_newsize */ + | |
2899 | 2 /* ns_size */) * sizeof(__be32); | |
2900 | } | |
2901 | ||
2902 | static inline u32 nfsd4_layoutreturn_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2903 | { | |
2904 | return (op_encode_hdr_size + | |
2905 | 1 /* lrs_stateid */ + | |
2906 | op_encode_stateid_maxsz) * sizeof(__be32); | |
2907 | } | |
2908 | #endif /* CONFIG_NFSD_PNFS */ | |
2909 | ||
2282cd2c KM |
2910 | |
2911 | static inline u32 nfsd4_seek_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) | |
2912 | { | |
2913 | return (op_encode_hdr_size + 3) * sizeof(__be32); | |
2914 | } | |
2915 | ||
23e50fe3 FL |
2916 | static inline u32 nfsd4_getxattr_rsize(struct svc_rqst *rqstp, |
2917 | struct nfsd4_op *op) | |
2918 | { | |
2919 | u32 maxcount, rlen; | |
2920 | ||
2921 | maxcount = svc_max_payload(rqstp); | |
2922 | rlen = min_t(u32, XATTR_SIZE_MAX, maxcount); | |
2923 | ||
2924 | return (op_encode_hdr_size + 1 + XDR_QUADLEN(rlen)) * sizeof(__be32); | |
2925 | } | |
2926 | ||
2927 | static inline u32 nfsd4_setxattr_rsize(struct svc_rqst *rqstp, | |
2928 | struct nfsd4_op *op) | |
2929 | { | |
2930 | return (op_encode_hdr_size + op_encode_change_info_maxsz) | |
2931 | * sizeof(__be32); | |
2932 | } | |
2933 | static inline u32 nfsd4_listxattrs_rsize(struct svc_rqst *rqstp, | |
2934 | struct nfsd4_op *op) | |
2935 | { | |
2936 | u32 maxcount, rlen; | |
2937 | ||
2938 | maxcount = svc_max_payload(rqstp); | |
2939 | rlen = min(op->u.listxattrs.lsxa_maxcount, maxcount); | |
2940 | ||
2941 | return (op_encode_hdr_size + 4 + XDR_QUADLEN(rlen)) * sizeof(__be32); | |
2942 | } | |
2943 | ||
2944 | static inline u32 nfsd4_removexattr_rsize(struct svc_rqst *rqstp, | |
2945 | struct nfsd4_op *op) | |
2946 | { | |
2947 | return (op_encode_hdr_size + op_encode_change_info_maxsz) | |
2948 | * sizeof(__be32); | |
2949 | } | |
2950 | ||
2951 | ||
bb2a8b0c | 2952 | static const struct nfsd4_operation nfsd4_ops[] = { |
b591480b | 2953 | [OP_ACCESS] = { |
eb69853d | 2954 | .op_func = nfsd4_access, |
b001a1b6 | 2955 | .op_name = "OP_ACCESS", |
1c122638 | 2956 | .op_rsize_bop = nfsd4_access_rsize, |
b591480b BF |
2957 | }, |
2958 | [OP_CLOSE] = { | |
eb69853d | 2959 | .op_func = nfsd4_close, |
58e7b33a | 2960 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 2961 | .op_name = "OP_CLOSE", |
1c122638 | 2962 | .op_rsize_bop = nfsd4_status_stateid_rsize, |
57832e7b | 2963 | .op_get_currentstateid = nfsd4_get_closestateid, |
b60e9859 | 2964 | .op_set_currentstateid = nfsd4_set_closestateid, |
b591480b BF |
2965 | }, |
2966 | [OP_COMMIT] = { | |
eb69853d | 2967 | .op_func = nfsd4_commit, |
58e7b33a | 2968 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 2969 | .op_name = "OP_COMMIT", |
1c122638 | 2970 | .op_rsize_bop = nfsd4_commit_rsize, |
b591480b BF |
2971 | }, |
2972 | [OP_CREATE] = { | |
eb69853d | 2973 | .op_func = nfsd4_create, |
d1471053 | 2974 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME | OP_CLEAR_STATEID, |
b001a1b6 | 2975 | .op_name = "OP_CREATE", |
1c122638 | 2976 | .op_rsize_bop = nfsd4_create_rsize, |
b591480b BF |
2977 | }, |
2978 | [OP_DELEGRETURN] = { | |
eb69853d | 2979 | .op_func = nfsd4_delegreturn, |
58e7b33a | 2980 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 2981 | .op_name = "OP_DELEGRETURN", |
58e7b33a | 2982 | .op_rsize_bop = nfsd4_only_status_rsize, |
57832e7b | 2983 | .op_get_currentstateid = nfsd4_get_delegreturnstateid, |
b591480b BF |
2984 | }, |
2985 | [OP_GETATTR] = { | |
eb69853d | 2986 | .op_func = nfsd4_getattr, |
eeac294e | 2987 | .op_flags = ALLOWED_ON_ABSENT_FS, |
b86cef60 | 2988 | .op_rsize_bop = nfsd4_getattr_rsize, |
b001a1b6 | 2989 | .op_name = "OP_GETATTR", |
b591480b BF |
2990 | }, |
2991 | [OP_GETFH] = { | |
eb69853d | 2992 | .op_func = nfsd4_getfh, |
b001a1b6 | 2993 | .op_name = "OP_GETFH", |
1c122638 | 2994 | .op_rsize_bop = nfsd4_getfh_rsize, |
b591480b BF |
2995 | }, |
2996 | [OP_LINK] = { | |
eb69853d | 2997 | .op_func = nfsd4_link, |
c856694e BF |
2998 | .op_flags = ALLOWED_ON_ABSENT_FS | OP_MODIFIES_SOMETHING |
2999 | | OP_CACHEME, | |
b001a1b6 | 3000 | .op_name = "OP_LINK", |
1c122638 | 3001 | .op_rsize_bop = nfsd4_link_rsize, |
b591480b BF |
3002 | }, |
3003 | [OP_LOCK] = { | |
eb69853d | 3004 | .op_func = nfsd4_lock, |
b7571e4c BF |
3005 | .op_flags = OP_MODIFIES_SOMETHING | |
3006 | OP_NONTRIVIAL_ERROR_ENCODE, | |
b001a1b6 | 3007 | .op_name = "OP_LOCK", |
1c122638 | 3008 | .op_rsize_bop = nfsd4_lock_rsize, |
b60e9859 | 3009 | .op_set_currentstateid = nfsd4_set_lockstateid, |
b591480b BF |
3010 | }, |
3011 | [OP_LOCKT] = { | |
eb69853d | 3012 | .op_func = nfsd4_lockt, |
b7571e4c | 3013 | .op_flags = OP_NONTRIVIAL_ERROR_ENCODE, |
b001a1b6 | 3014 | .op_name = "OP_LOCKT", |
1c122638 | 3015 | .op_rsize_bop = nfsd4_lock_rsize, |
b591480b BF |
3016 | }, |
3017 | [OP_LOCKU] = { | |
eb69853d | 3018 | .op_func = nfsd4_locku, |
58e7b33a | 3019 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 3020 | .op_name = "OP_LOCKU", |
1c122638 | 3021 | .op_rsize_bop = nfsd4_status_stateid_rsize, |
57832e7b | 3022 | .op_get_currentstateid = nfsd4_get_lockustateid, |
b591480b BF |
3023 | }, |
3024 | [OP_LOOKUP] = { | |
eb69853d | 3025 | .op_func = nfsd4_lookup, |
d1471053 | 3026 | .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID, |
b001a1b6 | 3027 | .op_name = "OP_LOOKUP", |
1c122638 | 3028 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b BF |
3029 | }, |
3030 | [OP_LOOKUPP] = { | |
eb69853d | 3031 | .op_func = nfsd4_lookupp, |
d1471053 | 3032 | .op_flags = OP_HANDLES_WRONGSEC | OP_CLEAR_STATEID, |
b001a1b6 | 3033 | .op_name = "OP_LOOKUPP", |
1c122638 | 3034 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b BF |
3035 | }, |
3036 | [OP_NVERIFY] = { | |
eb69853d | 3037 | .op_func = nfsd4_nverify, |
b001a1b6 | 3038 | .op_name = "OP_NVERIFY", |
1c122638 | 3039 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b BF |
3040 | }, |
3041 | [OP_OPEN] = { | |
eb69853d | 3042 | .op_func = nfsd4_open, |
58e7b33a | 3043 | .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING, |
b001a1b6 | 3044 | .op_name = "OP_OPEN", |
1c122638 | 3045 | .op_rsize_bop = nfsd4_open_rsize, |
b60e9859 | 3046 | .op_set_currentstateid = nfsd4_set_openstateid, |
b591480b BF |
3047 | }, |
3048 | [OP_OPEN_CONFIRM] = { | |
eb69853d | 3049 | .op_func = nfsd4_open_confirm, |
58e7b33a | 3050 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 3051 | .op_name = "OP_OPEN_CONFIRM", |
1c122638 | 3052 | .op_rsize_bop = nfsd4_status_stateid_rsize, |
b591480b BF |
3053 | }, |
3054 | [OP_OPEN_DOWNGRADE] = { | |
eb69853d | 3055 | .op_func = nfsd4_open_downgrade, |
58e7b33a | 3056 | .op_flags = OP_MODIFIES_SOMETHING, |
b001a1b6 | 3057 | .op_name = "OP_OPEN_DOWNGRADE", |
1c122638 | 3058 | .op_rsize_bop = nfsd4_status_stateid_rsize, |
57832e7b | 3059 | .op_get_currentstateid = nfsd4_get_opendowngradestateid, |
b60e9859 | 3060 | .op_set_currentstateid = nfsd4_set_opendowngradestateid, |
b591480b BF |
3061 | }, |
3062 | [OP_PUTFH] = { | |
eb69853d | 3063 | .op_func = nfsd4_putfh, |
68d93184 | 3064 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
5b648699 | 3065 | | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID, |
b001a1b6 | 3066 | .op_name = "OP_PUTFH", |
1c122638 | 3067 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b | 3068 | }, |
eeac294e | 3069 | [OP_PUTPUBFH] = { |
eb69853d | 3070 | .op_func = nfsd4_putrootfh, |
68d93184 | 3071 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
5b648699 | 3072 | | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID, |
b001a1b6 | 3073 | .op_name = "OP_PUTPUBFH", |
1c122638 | 3074 | .op_rsize_bop = nfsd4_only_status_rsize, |
eeac294e | 3075 | }, |
b591480b | 3076 | [OP_PUTROOTFH] = { |
eb69853d | 3077 | .op_func = nfsd4_putrootfh, |
68d93184 | 3078 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
5b648699 | 3079 | | OP_IS_PUTFH_LIKE | OP_CLEAR_STATEID, |
b001a1b6 | 3080 | .op_name = "OP_PUTROOTFH", |
1c122638 | 3081 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b BF |
3082 | }, |
3083 | [OP_READ] = { | |
eb69853d | 3084 | .op_func = nfsd4_read, |
34b1744c | 3085 | .op_release = nfsd4_read_release, |
b001a1b6 | 3086 | .op_name = "OP_READ", |
1c122638 | 3087 | .op_rsize_bop = nfsd4_read_rsize, |
57832e7b | 3088 | .op_get_currentstateid = nfsd4_get_readstateid, |
b591480b BF |
3089 | }, |
3090 | [OP_READDIR] = { | |
eb69853d | 3091 | .op_func = nfsd4_readdir, |
b001a1b6 | 3092 | .op_name = "OP_READDIR", |
1c122638 | 3093 | .op_rsize_bop = nfsd4_readdir_rsize, |
b591480b BF |
3094 | }, |
3095 | [OP_READLINK] = { | |
eb69853d | 3096 | .op_func = nfsd4_readlink, |
b001a1b6 | 3097 | .op_name = "OP_READLINK", |
1c122638 | 3098 | .op_rsize_bop = nfsd4_readlink_rsize, |
b591480b BF |
3099 | }, |
3100 | [OP_REMOVE] = { | |
eb69853d | 3101 | .op_func = nfsd4_remove, |
c856694e | 3102 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
b001a1b6 | 3103 | .op_name = "OP_REMOVE", |
1c122638 | 3104 | .op_rsize_bop = nfsd4_remove_rsize, |
b591480b BF |
3105 | }, |
3106 | [OP_RENAME] = { | |
eb69853d | 3107 | .op_func = nfsd4_rename, |
c856694e | 3108 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
58e7b33a | 3109 | .op_name = "OP_RENAME", |
1c122638 | 3110 | .op_rsize_bop = nfsd4_rename_rsize, |
b591480b BF |
3111 | }, |
3112 | [OP_RENEW] = { | |
eb69853d | 3113 | .op_func = nfsd4_renew, |
58e7b33a MJ |
3114 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
3115 | | OP_MODIFIES_SOMETHING, | |
b001a1b6 | 3116 | .op_name = "OP_RENEW", |
1c122638 | 3117 | .op_rsize_bop = nfsd4_only_status_rsize, |
58e7b33a | 3118 | |
b591480b BF |
3119 | }, |
3120 | [OP_RESTOREFH] = { | |
eb69853d | 3121 | .op_func = nfsd4_restorefh, |
68d93184 | 3122 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
58e7b33a | 3123 | | OP_IS_PUTFH_LIKE | OP_MODIFIES_SOMETHING, |
b001a1b6 | 3124 | .op_name = "OP_RESTOREFH", |
1c122638 | 3125 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b BF |
3126 | }, |
3127 | [OP_SAVEFH] = { | |
eb69853d | 3128 | .op_func = nfsd4_savefh, |
58e7b33a | 3129 | .op_flags = OP_HANDLES_WRONGSEC | OP_MODIFIES_SOMETHING, |
b001a1b6 | 3130 | .op_name = "OP_SAVEFH", |
1c122638 | 3131 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b | 3132 | }, |
dcb488a3 | 3133 | [OP_SECINFO] = { |
eb69853d | 3134 | .op_func = nfsd4_secinfo, |
34b1744c | 3135 | .op_release = nfsd4_secinfo_release, |
68d93184 | 3136 | .op_flags = OP_HANDLES_WRONGSEC, |
b001a1b6 | 3137 | .op_name = "OP_SECINFO", |
1c122638 | 3138 | .op_rsize_bop = nfsd4_secinfo_rsize, |
dcb488a3 | 3139 | }, |
b591480b | 3140 | [OP_SETATTR] = { |
eb69853d | 3141 | .op_func = nfsd4_setattr, |
b001a1b6 | 3142 | .op_name = "OP_SETATTR", |
b7571e4c BF |
3143 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME |
3144 | | OP_NONTRIVIAL_ERROR_ENCODE, | |
1c122638 | 3145 | .op_rsize_bop = nfsd4_setattr_rsize, |
57832e7b | 3146 | .op_get_currentstateid = nfsd4_get_setattrstateid, |
b591480b BF |
3147 | }, |
3148 | [OP_SETCLIENTID] = { | |
eb69853d | 3149 | .op_func = nfsd4_setclientid, |
58e7b33a | 3150 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
b7571e4c BF |
3151 | | OP_MODIFIES_SOMETHING | OP_CACHEME |
3152 | | OP_NONTRIVIAL_ERROR_ENCODE, | |
b001a1b6 | 3153 | .op_name = "OP_SETCLIENTID", |
1c122638 | 3154 | .op_rsize_bop = nfsd4_setclientid_rsize, |
b591480b BF |
3155 | }, |
3156 | [OP_SETCLIENTID_CONFIRM] = { | |
eb69853d | 3157 | .op_func = nfsd4_setclientid_confirm, |
58e7b33a | 3158 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
c856694e | 3159 | | OP_MODIFIES_SOMETHING | OP_CACHEME, |
b001a1b6 | 3160 | .op_name = "OP_SETCLIENTID_CONFIRM", |
1c122638 | 3161 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b BF |
3162 | }, |
3163 | [OP_VERIFY] = { | |
eb69853d | 3164 | .op_func = nfsd4_verify, |
b001a1b6 | 3165 | .op_name = "OP_VERIFY", |
1c122638 | 3166 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b BF |
3167 | }, |
3168 | [OP_WRITE] = { | |
eb69853d | 3169 | .op_func = nfsd4_write, |
c856694e | 3170 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, |
b001a1b6 | 3171 | .op_name = "OP_WRITE", |
1c122638 | 3172 | .op_rsize_bop = nfsd4_write_rsize, |
57832e7b | 3173 | .op_get_currentstateid = nfsd4_get_writestateid, |
b591480b BF |
3174 | }, |
3175 | [OP_RELEASE_LOCKOWNER] = { | |
eb69853d | 3176 | .op_func = nfsd4_release_lockowner, |
58e7b33a MJ |
3177 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_ON_ABSENT_FS |
3178 | | OP_MODIFIES_SOMETHING, | |
b001a1b6 | 3179 | .op_name = "OP_RELEASE_LOCKOWNER", |
1c122638 | 3180 | .op_rsize_bop = nfsd4_only_status_rsize, |
b591480b | 3181 | }, |
069b6ad4 AA |
3182 | |
3183 | /* NFSv4.1 operations */ | |
3184 | [OP_EXCHANGE_ID] = { | |
eb69853d | 3185 | .op_func = nfsd4_exchange_id, |
58e7b33a MJ |
3186 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
3187 | | OP_MODIFIES_SOMETHING, | |
069b6ad4 | 3188 | .op_name = "OP_EXCHANGE_ID", |
1c122638 | 3189 | .op_rsize_bop = nfsd4_exchange_id_rsize, |
069b6ad4 | 3190 | }, |
cb73a9f4 | 3191 | [OP_BACKCHANNEL_CTL] = { |
eb69853d | 3192 | .op_func = nfsd4_backchannel_ctl, |
cb73a9f4 BF |
3193 | .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, |
3194 | .op_name = "OP_BACKCHANNEL_CTL", | |
1c122638 | 3195 | .op_rsize_bop = nfsd4_only_status_rsize, |
cb73a9f4 | 3196 | }, |
1d1bc8f2 | 3197 | [OP_BIND_CONN_TO_SESSION] = { |
eb69853d | 3198 | .op_func = nfsd4_bind_conn_to_session, |
58e7b33a MJ |
3199 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
3200 | | OP_MODIFIES_SOMETHING, | |
1d1bc8f2 | 3201 | .op_name = "OP_BIND_CONN_TO_SESSION", |
1c122638 | 3202 | .op_rsize_bop = nfsd4_bind_conn_to_session_rsize, |
1d1bc8f2 | 3203 | }, |
069b6ad4 | 3204 | [OP_CREATE_SESSION] = { |
eb69853d | 3205 | .op_func = nfsd4_create_session, |
58e7b33a MJ |
3206 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
3207 | | OP_MODIFIES_SOMETHING, | |
069b6ad4 | 3208 | .op_name = "OP_CREATE_SESSION", |
1c122638 | 3209 | .op_rsize_bop = nfsd4_create_session_rsize, |
069b6ad4 AA |
3210 | }, |
3211 | [OP_DESTROY_SESSION] = { | |
eb69853d | 3212 | .op_func = nfsd4_destroy_session, |
58e7b33a MJ |
3213 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
3214 | | OP_MODIFIES_SOMETHING, | |
069b6ad4 | 3215 | .op_name = "OP_DESTROY_SESSION", |
1c122638 | 3216 | .op_rsize_bop = nfsd4_only_status_rsize, |
069b6ad4 AA |
3217 | }, |
3218 | [OP_SEQUENCE] = { | |
eb69853d | 3219 | .op_func = nfsd4_sequence, |
f9bb94c4 | 3220 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, |
069b6ad4 | 3221 | .op_name = "OP_SEQUENCE", |
1c122638 | 3222 | .op_rsize_bop = nfsd4_sequence_rsize, |
069b6ad4 | 3223 | }, |
094b5d74 | 3224 | [OP_DESTROY_CLIENTID] = { |
eb69853d | 3225 | .op_func = nfsd4_destroy_clientid, |
58e7b33a MJ |
3226 | .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP |
3227 | | OP_MODIFIES_SOMETHING, | |
094b5d74 | 3228 | .op_name = "OP_DESTROY_CLIENTID", |
1c122638 | 3229 | .op_rsize_bop = nfsd4_only_status_rsize, |
094b5d74 | 3230 | }, |
4dc6ec00 | 3231 | [OP_RECLAIM_COMPLETE] = { |
eb69853d | 3232 | .op_func = nfsd4_reclaim_complete, |
58e7b33a | 3233 | .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, |
4dc6ec00 | 3234 | .op_name = "OP_RECLAIM_COMPLETE", |
1c122638 | 3235 | .op_rsize_bop = nfsd4_only_status_rsize, |
4dc6ec00 | 3236 | }, |
04f4ad16 | 3237 | [OP_SECINFO_NO_NAME] = { |
eb69853d | 3238 | .op_func = nfsd4_secinfo_no_name, |
ec572b9e | 3239 | .op_release = nfsd4_secinfo_no_name_release, |
68d93184 | 3240 | .op_flags = OP_HANDLES_WRONGSEC, |
04f4ad16 | 3241 | .op_name = "OP_SECINFO_NO_NAME", |
1c122638 | 3242 | .op_rsize_bop = nfsd4_secinfo_rsize, |
04f4ad16 | 3243 | }, |
17456804 | 3244 | [OP_TEST_STATEID] = { |
eb69853d | 3245 | .op_func = nfsd4_test_stateid, |
17456804 BS |
3246 | .op_flags = ALLOWED_WITHOUT_FH, |
3247 | .op_name = "OP_TEST_STATEID", | |
1c122638 | 3248 | .op_rsize_bop = nfsd4_test_stateid_rsize, |
17456804 | 3249 | }, |
e1ca12df | 3250 | [OP_FREE_STATEID] = { |
eb69853d | 3251 | .op_func = nfsd4_free_stateid, |
58e7b33a | 3252 | .op_flags = ALLOWED_WITHOUT_FH | OP_MODIFIES_SOMETHING, |
e1ca12df | 3253 | .op_name = "OP_FREE_STATEID", |
57832e7b | 3254 | .op_get_currentstateid = nfsd4_get_freestateid, |
1c122638 | 3255 | .op_rsize_bop = nfsd4_only_status_rsize, |
e1ca12df | 3256 | }, |
9cf514cc CH |
3257 | #ifdef CONFIG_NFSD_PNFS |
3258 | [OP_GETDEVICEINFO] = { | |
eb69853d | 3259 | .op_func = nfsd4_getdeviceinfo, |
34b1744c | 3260 | .op_release = nfsd4_getdeviceinfo_release, |
9cf514cc CH |
3261 | .op_flags = ALLOWED_WITHOUT_FH, |
3262 | .op_name = "OP_GETDEVICEINFO", | |
1c122638 | 3263 | .op_rsize_bop = nfsd4_getdeviceinfo_rsize, |
9cf514cc CH |
3264 | }, |
3265 | [OP_LAYOUTGET] = { | |
eb69853d | 3266 | .op_func = nfsd4_layoutget, |
34b1744c | 3267 | .op_release = nfsd4_layoutget_release, |
9cf514cc CH |
3268 | .op_flags = OP_MODIFIES_SOMETHING, |
3269 | .op_name = "OP_LAYOUTGET", | |
1c122638 | 3270 | .op_rsize_bop = nfsd4_layoutget_rsize, |
9cf514cc CH |
3271 | }, |
3272 | [OP_LAYOUTCOMMIT] = { | |
eb69853d | 3273 | .op_func = nfsd4_layoutcommit, |
9cf514cc CH |
3274 | .op_flags = OP_MODIFIES_SOMETHING, |
3275 | .op_name = "OP_LAYOUTCOMMIT", | |
1c122638 | 3276 | .op_rsize_bop = nfsd4_layoutcommit_rsize, |
9cf514cc CH |
3277 | }, |
3278 | [OP_LAYOUTRETURN] = { | |
eb69853d | 3279 | .op_func = nfsd4_layoutreturn, |
9cf514cc CH |
3280 | .op_flags = OP_MODIFIES_SOMETHING, |
3281 | .op_name = "OP_LAYOUTRETURN", | |
1c122638 | 3282 | .op_rsize_bop = nfsd4_layoutreturn_rsize, |
9cf514cc CH |
3283 | }, |
3284 | #endif /* CONFIG_NFSD_PNFS */ | |
24bab491 AS |
3285 | |
3286 | /* NFSv4.2 operations */ | |
95d871f0 | 3287 | [OP_ALLOCATE] = { |
eb69853d | 3288 | .op_func = nfsd4_allocate, |
03b31f48 | 3289 | .op_flags = OP_MODIFIES_SOMETHING, |
95d871f0 | 3290 | .op_name = "OP_ALLOCATE", |
1c122638 | 3291 | .op_rsize_bop = nfsd4_only_status_rsize, |
95d871f0 | 3292 | }, |
b0cb9085 | 3293 | [OP_DEALLOCATE] = { |
eb69853d | 3294 | .op_func = nfsd4_deallocate, |
03b31f48 | 3295 | .op_flags = OP_MODIFIES_SOMETHING, |
b0cb9085 | 3296 | .op_name = "OP_DEALLOCATE", |
1c122638 | 3297 | .op_rsize_bop = nfsd4_only_status_rsize, |
b0cb9085 | 3298 | }, |
ffa0160a | 3299 | [OP_CLONE] = { |
eb69853d | 3300 | .op_func = nfsd4_clone, |
03b31f48 | 3301 | .op_flags = OP_MODIFIES_SOMETHING, |
ffa0160a | 3302 | .op_name = "OP_CLONE", |
1c122638 | 3303 | .op_rsize_bop = nfsd4_only_status_rsize, |
ffa0160a | 3304 | }, |
29ae7f9d | 3305 | [OP_COPY] = { |
eb69853d | 3306 | .op_func = nfsd4_copy, |
03b31f48 | 3307 | .op_flags = OP_MODIFIES_SOMETHING, |
29ae7f9d | 3308 | .op_name = "OP_COPY", |
1c122638 | 3309 | .op_rsize_bop = nfsd4_copy_rsize, |
29ae7f9d | 3310 | }, |
528b8493 AS |
3311 | [OP_READ_PLUS] = { |
3312 | .op_func = nfsd4_read, | |
3313 | .op_release = nfsd4_read_release, | |
3314 | .op_name = "OP_READ_PLUS", | |
3315 | .op_rsize_bop = nfsd4_read_plus_rsize, | |
3316 | .op_get_currentstateid = nfsd4_get_readstateid, | |
3317 | }, | |
24bab491 | 3318 | [OP_SEEK] = { |
eb69853d | 3319 | .op_func = nfsd4_seek, |
24bab491 | 3320 | .op_name = "OP_SEEK", |
1c122638 | 3321 | .op_rsize_bop = nfsd4_seek_rsize, |
24bab491 | 3322 | }, |
6308bc98 OK |
3323 | [OP_OFFLOAD_STATUS] = { |
3324 | .op_func = nfsd4_offload_status, | |
3325 | .op_name = "OP_OFFLOAD_STATUS", | |
3326 | .op_rsize_bop = nfsd4_offload_status_rsize, | |
3327 | }, | |
885e2bf3 OK |
3328 | [OP_OFFLOAD_CANCEL] = { |
3329 | .op_func = nfsd4_offload_cancel, | |
3330 | .op_flags = OP_MODIFIES_SOMETHING, | |
3331 | .op_name = "OP_OFFLOAD_CANCEL", | |
3332 | .op_rsize_bop = nfsd4_only_status_rsize, | |
3333 | }, | |
51911868 OK |
3334 | [OP_COPY_NOTIFY] = { |
3335 | .op_func = nfsd4_copy_notify, | |
3336 | .op_flags = OP_MODIFIES_SOMETHING, | |
3337 | .op_name = "OP_COPY_NOTIFY", | |
3338 | .op_rsize_bop = nfsd4_copy_notify_rsize, | |
3339 | }, | |
23e50fe3 FL |
3340 | [OP_GETXATTR] = { |
3341 | .op_func = nfsd4_getxattr, | |
3342 | .op_name = "OP_GETXATTR", | |
3343 | .op_rsize_bop = nfsd4_getxattr_rsize, | |
3344 | }, | |
3345 | [OP_SETXATTR] = { | |
3346 | .op_func = nfsd4_setxattr, | |
3347 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, | |
3348 | .op_name = "OP_SETXATTR", | |
3349 | .op_rsize_bop = nfsd4_setxattr_rsize, | |
3350 | }, | |
3351 | [OP_LISTXATTRS] = { | |
3352 | .op_func = nfsd4_listxattrs, | |
3353 | .op_name = "OP_LISTXATTRS", | |
3354 | .op_rsize_bop = nfsd4_listxattrs_rsize, | |
3355 | }, | |
3356 | [OP_REMOVEXATTR] = { | |
3357 | .op_func = nfsd4_removexattr, | |
3358 | .op_flags = OP_MODIFIES_SOMETHING | OP_CACHEME, | |
3359 | .op_name = "OP_REMOVEXATTR", | |
3360 | .op_rsize_bop = nfsd4_removexattr_rsize, | |
3361 | }, | |
b591480b BF |
3362 | }; |
3363 | ||
ed941643 AE |
3364 | /** |
3365 | * nfsd4_spo_must_allow - Determine if the compound op contains an | |
3366 | * operation that is allowed to be sent with machine credentials | |
3367 | * | |
3368 | * @rqstp: a pointer to the struct svc_rqst | |
3369 | * | |
3370 | * Checks to see if the compound contains a spo_must_allow op | |
3371 | * and confirms that it was sent with the proper machine creds. | |
3372 | */ | |
3373 | ||
3374 | bool nfsd4_spo_must_allow(struct svc_rqst *rqstp) | |
3375 | { | |
3376 | struct nfsd4_compoundres *resp = rqstp->rq_resp; | |
3377 | struct nfsd4_compoundargs *argp = rqstp->rq_argp; | |
e34c0ce9 | 3378 | struct nfsd4_op *this; |
ed941643 AE |
3379 | struct nfsd4_compound_state *cstate = &resp->cstate; |
3380 | struct nfs4_op_map *allow = &cstate->clp->cl_spo_must_allow; | |
3381 | u32 opiter; | |
3382 | ||
3383 | if (!cstate->minorversion) | |
3384 | return false; | |
3385 | ||
44b49aa6 | 3386 | if (cstate->spo_must_allowed) |
ed941643 AE |
3387 | return true; |
3388 | ||
3389 | opiter = resp->opcnt; | |
3390 | while (opiter < argp->opcnt) { | |
3391 | this = &argp->ops[opiter++]; | |
3392 | if (test_bit(this->opnum, allow->u.longs) && | |
3393 | cstate->clp->cl_mach_cred && | |
3394 | nfsd4_mach_creds_match(cstate->clp, rqstp)) { | |
3395 | cstate->spo_must_allowed = true; | |
3396 | return true; | |
3397 | } | |
3398 | } | |
3399 | cstate->spo_must_allowed = false; | |
3400 | return false; | |
3401 | } | |
3402 | ||
4f0cefbf BF |
3403 | int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op) |
3404 | { | |
05b7278d | 3405 | if (op->opnum == OP_ILLEGAL || op->status == nfserr_notsupp) |
4f0cefbf | 3406 | return op_encode_hdr_size * sizeof(__be32); |
2282cd2c KM |
3407 | |
3408 | BUG_ON(OPDESC(op)->op_rsize_bop == NULL); | |
3409 | return OPDESC(op)->op_rsize_bop(rqstp, op); | |
4f0cefbf BF |
3410 | } |
3411 | ||
07d1f802 BF |
3412 | void warn_on_nonidempotent_op(struct nfsd4_op *op) |
3413 | { | |
3414 | if (OPDESC(op)->op_flags & OP_MODIFIES_SOMETHING) { | |
3a237b4a | 3415 | pr_err("unable to encode reply to nonidempotent op %u (%s)\n", |
07d1f802 BF |
3416 | op->opnum, nfsd4_op_name(op->opnum)); |
3417 | WARN_ON_ONCE(1); | |
3418 | } | |
3419 | } | |
3420 | ||
f1c7f79b | 3421 | static const char *nfsd4_op_name(unsigned opnum) |
b001a1b6 BH |
3422 | { |
3423 | if (opnum < ARRAY_SIZE(nfsd4_ops)) | |
3424 | return nfsd4_ops[opnum].op_name; | |
3425 | return "unknown_operation"; | |
3426 | } | |
3427 | ||
860bda29 | 3428 | static const struct svc_procedure nfsd_procedures4[2] = { |
0a93a47f | 3429 | [NFSPROC4_NULL] = { |
f7235b6b | 3430 | .pc_func = nfsd4_proc_null, |
788f7183 CL |
3431 | .pc_decode = nfssvc_decode_voidarg, |
3432 | .pc_encode = nfssvc_encode_voidres, | |
3433 | .pc_argsize = sizeof(struct nfsd_voidargs), | |
3434 | .pc_ressize = sizeof(struct nfsd_voidres), | |
0a93a47f YZ |
3435 | .pc_cachetype = RC_NOCACHE, |
3436 | .pc_xdrressize = 1, | |
2289e87b | 3437 | .pc_name = "NULL", |
0a93a47f YZ |
3438 | }, |
3439 | [NFSPROC4_COMPOUND] = { | |
f7235b6b | 3440 | .pc_func = nfsd4_proc_compound, |
026fec7e | 3441 | .pc_decode = nfs4svc_decode_compoundargs, |
63f8de37 | 3442 | .pc_encode = nfs4svc_encode_compoundres, |
0a93a47f YZ |
3443 | .pc_argsize = sizeof(struct nfsd4_compoundargs), |
3444 | .pc_ressize = sizeof(struct nfsd4_compoundres), | |
3e98abff | 3445 | .pc_release = nfsd4_release_compoundargs, |
0a93a47f YZ |
3446 | .pc_cachetype = RC_NOCACHE, |
3447 | .pc_xdrressize = NFSD_BUFSIZE/4, | |
2289e87b | 3448 | .pc_name = "COMPOUND", |
0a93a47f | 3449 | }, |
1da177e4 LT |
3450 | }; |
3451 | ||
7fd38af9 | 3452 | static unsigned int nfsd_count3[ARRAY_SIZE(nfsd_procedures4)]; |
e9679189 | 3453 | const struct svc_version nfsd_version4 = { |
5283b03e JL |
3454 | .vs_vers = 4, |
3455 | .vs_nproc = 2, | |
3456 | .vs_proc = nfsd_procedures4, | |
7fd38af9 | 3457 | .vs_count = nfsd_count3, |
5283b03e JL |
3458 | .vs_dispatch = nfsd_dispatch, |
3459 | .vs_xdrsize = NFS4_SVC_XDRSIZE, | |
3460 | .vs_rpcb_optnl = true, | |
3461 | .vs_need_cong_ctrl = true, | |
1da177e4 | 3462 | }; |