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Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Server-side XDR 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. | |
34 | * | |
35 | * TODO: Neil Brown made the following observation: We currently | |
36 | * initially reserve NFSD_BUFSIZE space on the transmit queue and | |
37 | * never release any of that until the request is complete. | |
38 | * It would be good to calculate a new maximum response size while | |
39 | * decoding the COMPOUND, and call svc_reserve with this number | |
40 | * at the end of nfs4svc_decode_compoundargs. | |
41 | */ | |
42 | ||
5a0e3ad6 | 43 | #include <linux/slab.h> |
1da177e4 | 44 | #include <linux/namei.h> |
341eb184 | 45 | #include <linux/statfs.h> |
0733d213 | 46 | #include <linux/utsname.h> |
17456804 | 47 | #include <linux/pagemap.h> |
4796f457 | 48 | #include <linux/sunrpc/svcauth_gss.h> |
9a74af21 | 49 | |
2ca72e17 BF |
50 | #include "idmap.h" |
51 | #include "acl.h" | |
9a74af21 | 52 | #include "xdr4.h" |
0a3adade | 53 | #include "vfs.h" |
17456804 | 54 | #include "state.h" |
1091006c | 55 | #include "cache.h" |
2ca72e17 | 56 | |
1da177e4 LT |
57 | #define NFSDDBG_FACILITY NFSDDBG_XDR |
58 | ||
42ca0993 BF |
59 | /* |
60 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing | |
61 | * directory in order to indicate to the client that a filesystem boundary is present | |
62 | * We use a fixed fsid for a referral | |
63 | */ | |
64 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL | |
65 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL | |
66 | ||
b37ad28b AV |
67 | static __be32 |
68 | check_filename(char *str, int len, __be32 err) | |
1da177e4 LT |
69 | { |
70 | int i; | |
71 | ||
72 | if (len == 0) | |
73 | return nfserr_inval; | |
74 | if (isdotent(str, len)) | |
75 | return err; | |
76 | for (i = 0; i < len; i++) | |
77 | if (str[i] == '/') | |
78 | return err; | |
79 | return 0; | |
80 | } | |
81 | ||
1da177e4 | 82 | #define DECODE_HEAD \ |
2ebbc012 | 83 | __be32 *p; \ |
b37ad28b | 84 | __be32 status |
1da177e4 LT |
85 | #define DECODE_TAIL \ |
86 | status = 0; \ | |
87 | out: \ | |
88 | return status; \ | |
89 | xdr_error: \ | |
817cb9d4 CL |
90 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
91 | __FILE__, __LINE__); \ | |
1da177e4 LT |
92 | status = nfserr_bad_xdr; \ |
93 | goto out | |
94 | ||
95 | #define READ32(x) (x) = ntohl(*p++) | |
96 | #define READ64(x) do { \ | |
97 | (x) = (u64)ntohl(*p++) << 32; \ | |
98 | (x) |= ntohl(*p++); \ | |
99 | } while (0) | |
100 | #define READTIME(x) do { \ | |
101 | p++; \ | |
102 | (x) = ntohl(*p++); \ | |
103 | p++; \ | |
104 | } while (0) | |
105 | #define READMEM(x,nbytes) do { \ | |
106 | x = (char *)p; \ | |
107 | p += XDR_QUADLEN(nbytes); \ | |
108 | } while (0) | |
109 | #define SAVEMEM(x,nbytes) do { \ | |
110 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
111 | savemem(argp, p, nbytes) : \ | |
112 | (char *)p)) { \ | |
817cb9d4 CL |
113 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
114 | __FILE__, __LINE__); \ | |
1da177e4 LT |
115 | goto xdr_error; \ |
116 | } \ | |
117 | p += XDR_QUADLEN(nbytes); \ | |
118 | } while (0) | |
119 | #define COPYMEM(x,nbytes) do { \ | |
120 | memcpy((x), p, nbytes); \ | |
121 | p += XDR_QUADLEN(nbytes); \ | |
122 | } while (0) | |
123 | ||
124 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ | |
125 | #define READ_BUF(nbytes) do { \ | |
126 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ | |
127 | p = argp->p; \ | |
128 | argp->p += XDR_QUADLEN(nbytes); \ | |
129 | } else if (!(p = read_buf(argp, nbytes))) { \ | |
817cb9d4 CL |
130 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
131 | __FILE__, __LINE__); \ | |
1da177e4 LT |
132 | goto xdr_error; \ |
133 | } \ | |
134 | } while (0) | |
135 | ||
17456804 BS |
136 | static void save_buf(struct nfsd4_compoundargs *argp, struct nfsd4_saved_compoundargs *savep) |
137 | { | |
138 | savep->p = argp->p; | |
139 | savep->end = argp->end; | |
140 | savep->pagelen = argp->pagelen; | |
141 | savep->pagelist = argp->pagelist; | |
142 | } | |
143 | ||
144 | static void restore_buf(struct nfsd4_compoundargs *argp, struct nfsd4_saved_compoundargs *savep) | |
145 | { | |
146 | argp->p = savep->p; | |
147 | argp->end = savep->end; | |
148 | argp->pagelen = savep->pagelen; | |
149 | argp->pagelist = savep->pagelist; | |
150 | } | |
151 | ||
ca2a05aa | 152 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
1da177e4 LT |
153 | { |
154 | /* We want more bytes than seem to be available. | |
155 | * Maybe we need a new page, maybe we have just run out | |
156 | */ | |
ca2a05aa | 157 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
2ebbc012 | 158 | __be32 *p; |
1da177e4 LT |
159 | if (avail + argp->pagelen < nbytes) |
160 | return NULL; | |
161 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ | |
162 | return NULL; | |
163 | /* ok, we can do it with the current plus the next page */ | |
164 | if (nbytes <= sizeof(argp->tmp)) | |
165 | p = argp->tmp; | |
166 | else { | |
f99d49ad | 167 | kfree(argp->tmpp); |
1da177e4 LT |
168 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
169 | if (!p) | |
170 | return NULL; | |
171 | ||
172 | } | |
ca2a05aa BF |
173 | /* |
174 | * The following memcpy is safe because read_buf is always | |
175 | * called with nbytes > avail, and the two cases above both | |
176 | * guarantee p points to at least nbytes bytes. | |
177 | */ | |
1da177e4 LT |
178 | memcpy(p, argp->p, avail); |
179 | /* step to next page */ | |
180 | argp->p = page_address(argp->pagelist[0]); | |
181 | argp->pagelist++; | |
182 | if (argp->pagelen < PAGE_SIZE) { | |
2bc3c117 | 183 | argp->end = argp->p + (argp->pagelen>>2); |
1da177e4 LT |
184 | argp->pagelen = 0; |
185 | } else { | |
2bc3c117 | 186 | argp->end = argp->p + (PAGE_SIZE>>2); |
1da177e4 LT |
187 | argp->pagelen -= PAGE_SIZE; |
188 | } | |
189 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); | |
190 | argp->p += XDR_QUADLEN(nbytes - avail); | |
191 | return p; | |
192 | } | |
193 | ||
60adfc50 AA |
194 | static int zero_clientid(clientid_t *clid) |
195 | { | |
196 | return (clid->cl_boot == 0) && (clid->cl_id == 0); | |
197 | } | |
198 | ||
1da177e4 LT |
199 | static int |
200 | defer_free(struct nfsd4_compoundargs *argp, | |
201 | void (*release)(const void *), void *p) | |
202 | { | |
203 | struct tmpbuf *tb; | |
204 | ||
205 | tb = kmalloc(sizeof(*tb), GFP_KERNEL); | |
206 | if (!tb) | |
207 | return -ENOMEM; | |
208 | tb->buf = p; | |
209 | tb->release = release; | |
210 | tb->next = argp->to_free; | |
211 | argp->to_free = tb; | |
212 | return 0; | |
213 | } | |
214 | ||
2ebbc012 | 215 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
1da177e4 | 216 | { |
1da177e4 | 217 | if (p == argp->tmp) { |
67114fe6 | 218 | p = kmemdup(argp->tmp, nbytes, GFP_KERNEL); |
a4db5fe5 BF |
219 | if (!p) |
220 | return NULL; | |
1da177e4 | 221 | } else { |
73dff8be | 222 | BUG_ON(p != argp->tmpp); |
1da177e4 LT |
223 | argp->tmpp = NULL; |
224 | } | |
225 | if (defer_free(argp, kfree, p)) { | |
a4db5fe5 | 226 | kfree(p); |
1da177e4 LT |
227 | return NULL; |
228 | } else | |
229 | return (char *)p; | |
230 | } | |
231 | ||
b37ad28b | 232 | static __be32 |
1da177e4 LT |
233 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
234 | { | |
235 | u32 bmlen; | |
236 | DECODE_HEAD; | |
237 | ||
238 | bmval[0] = 0; | |
239 | bmval[1] = 0; | |
7e705706 | 240 | bmval[2] = 0; |
1da177e4 LT |
241 | |
242 | READ_BUF(4); | |
243 | READ32(bmlen); | |
244 | if (bmlen > 1000) | |
245 | goto xdr_error; | |
246 | ||
247 | READ_BUF(bmlen << 2); | |
248 | if (bmlen > 0) | |
249 | READ32(bmval[0]); | |
250 | if (bmlen > 1) | |
251 | READ32(bmval[1]); | |
7e705706 AA |
252 | if (bmlen > 2) |
253 | READ32(bmval[2]); | |
1da177e4 LT |
254 | |
255 | DECODE_TAIL; | |
256 | } | |
257 | ||
b37ad28b | 258 | static __be32 |
3c8e0316 | 259 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, |
c0d6fc8a | 260 | struct iattr *iattr, struct nfs4_acl **acl) |
1da177e4 LT |
261 | { |
262 | int expected_len, len = 0; | |
263 | u32 dummy32; | |
264 | char *buf; | |
b8dd7b9a | 265 | int host_err; |
1da177e4 LT |
266 | |
267 | DECODE_HEAD; | |
268 | iattr->ia_valid = 0; | |
269 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
270 | return status; | |
271 | ||
1da177e4 LT |
272 | READ_BUF(4); |
273 | READ32(expected_len); | |
274 | ||
275 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
276 | READ_BUF(8); | |
277 | len += 8; | |
278 | READ64(iattr->ia_size); | |
279 | iattr->ia_valid |= ATTR_SIZE; | |
280 | } | |
281 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
28e05dd8 BF |
282 | int nace; |
283 | struct nfs4_ace *ace; | |
1da177e4 LT |
284 | |
285 | READ_BUF(4); len += 4; | |
286 | READ32(nace); | |
287 | ||
28e05dd8 BF |
288 | if (nace > NFS4_ACL_MAX) |
289 | return nfserr_resource; | |
290 | ||
291 | *acl = nfs4_acl_new(nace); | |
1da177e4 | 292 | if (*acl == NULL) { |
b8dd7b9a | 293 | host_err = -ENOMEM; |
1da177e4 LT |
294 | goto out_nfserr; |
295 | } | |
28e05dd8 | 296 | defer_free(argp, kfree, *acl); |
1da177e4 | 297 | |
28e05dd8 BF |
298 | (*acl)->naces = nace; |
299 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { | |
1da177e4 | 300 | READ_BUF(16); len += 16; |
28e05dd8 BF |
301 | READ32(ace->type); |
302 | READ32(ace->flag); | |
303 | READ32(ace->access_mask); | |
1da177e4 LT |
304 | READ32(dummy32); |
305 | READ_BUF(dummy32); | |
306 | len += XDR_QUADLEN(dummy32) << 2; | |
307 | READMEM(buf, dummy32); | |
28e05dd8 | 308 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
3c726023 | 309 | status = nfs_ok; |
28e05dd8 BF |
310 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
311 | ace->who = 0; | |
312 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) | |
3c726023 | 313 | status = nfsd_map_name_to_gid(argp->rqstp, |
28e05dd8 | 314 | buf, dummy32, &ace->who); |
1da177e4 | 315 | else |
3c726023 | 316 | status = nfsd_map_name_to_uid(argp->rqstp, |
28e05dd8 | 317 | buf, dummy32, &ace->who); |
3c726023 BF |
318 | if (status) |
319 | return status; | |
1da177e4 LT |
320 | } |
321 | } else | |
322 | *acl = NULL; | |
323 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
324 | READ_BUF(4); | |
325 | len += 4; | |
326 | READ32(iattr->ia_mode); | |
327 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); | |
328 | iattr->ia_valid |= ATTR_MODE; | |
329 | } | |
330 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
331 | READ_BUF(4); | |
332 | len += 4; | |
333 | READ32(dummy32); | |
334 | READ_BUF(dummy32); | |
335 | len += (XDR_QUADLEN(dummy32) << 2); | |
336 | READMEM(buf, dummy32); | |
47c85291 N |
337 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
338 | return status; | |
1da177e4 LT |
339 | iattr->ia_valid |= ATTR_UID; |
340 | } | |
341 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
342 | READ_BUF(4); | |
343 | len += 4; | |
344 | READ32(dummy32); | |
345 | READ_BUF(dummy32); | |
346 | len += (XDR_QUADLEN(dummy32) << 2); | |
347 | READMEM(buf, dummy32); | |
47c85291 N |
348 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
349 | return status; | |
1da177e4 LT |
350 | iattr->ia_valid |= ATTR_GID; |
351 | } | |
352 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
353 | READ_BUF(4); | |
354 | len += 4; | |
355 | READ32(dummy32); | |
356 | switch (dummy32) { | |
357 | case NFS4_SET_TO_CLIENT_TIME: | |
358 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
359 | all 32 bits of 'nseconds'. */ | |
360 | READ_BUF(12); | |
361 | len += 12; | |
362 | READ32(dummy32); | |
363 | if (dummy32) | |
364 | return nfserr_inval; | |
365 | READ32(iattr->ia_atime.tv_sec); | |
366 | READ32(iattr->ia_atime.tv_nsec); | |
367 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) | |
368 | return nfserr_inval; | |
369 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); | |
370 | break; | |
371 | case NFS4_SET_TO_SERVER_TIME: | |
372 | iattr->ia_valid |= ATTR_ATIME; | |
373 | break; | |
374 | default: | |
375 | goto xdr_error; | |
376 | } | |
377 | } | |
1da177e4 LT |
378 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
379 | READ_BUF(4); | |
380 | len += 4; | |
381 | READ32(dummy32); | |
382 | switch (dummy32) { | |
383 | case NFS4_SET_TO_CLIENT_TIME: | |
384 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
385 | all 32 bits of 'nseconds'. */ | |
386 | READ_BUF(12); | |
387 | len += 12; | |
388 | READ32(dummy32); | |
389 | if (dummy32) | |
390 | return nfserr_inval; | |
391 | READ32(iattr->ia_mtime.tv_sec); | |
392 | READ32(iattr->ia_mtime.tv_nsec); | |
393 | if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) | |
394 | return nfserr_inval; | |
395 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); | |
396 | break; | |
397 | case NFS4_SET_TO_SERVER_TIME: | |
398 | iattr->ia_valid |= ATTR_MTIME; | |
399 | break; | |
400 | default: | |
401 | goto xdr_error; | |
402 | } | |
403 | } | |
3c8e0316 YZ |
404 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
405 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 | |
406 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) | |
407 | READ_BUF(expected_len - len); | |
408 | else if (len != expected_len) | |
1da177e4 LT |
409 | goto xdr_error; |
410 | ||
411 | DECODE_TAIL; | |
412 | ||
413 | out_nfserr: | |
b8dd7b9a | 414 | status = nfserrno(host_err); |
1da177e4 LT |
415 | goto out; |
416 | } | |
417 | ||
e31a1b66 BH |
418 | static __be32 |
419 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
420 | { | |
421 | DECODE_HEAD; | |
422 | ||
423 | READ_BUF(sizeof(stateid_t)); | |
424 | READ32(sid->si_generation); | |
425 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
426 | ||
427 | DECODE_TAIL; | |
428 | } | |
429 | ||
b37ad28b | 430 | static __be32 |
1da177e4 LT |
431 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
432 | { | |
433 | DECODE_HEAD; | |
434 | ||
435 | READ_BUF(4); | |
436 | READ32(access->ac_req_access); | |
437 | ||
438 | DECODE_TAIL; | |
439 | } | |
440 | ||
1d1bc8f2 BF |
441 | static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) |
442 | { | |
443 | DECODE_HEAD; | |
1d1bc8f2 BF |
444 | |
445 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 8); | |
446 | COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
447 | READ32(bcts->dir); | |
6ce2357f BS |
448 | /* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker |
449 | * could help us figure out we should be using it. */ | |
1d1bc8f2 BF |
450 | DECODE_TAIL; |
451 | } | |
452 | ||
b37ad28b | 453 | static __be32 |
1da177e4 LT |
454 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
455 | { | |
456 | DECODE_HEAD; | |
457 | ||
e31a1b66 | 458 | READ_BUF(4); |
1da177e4 | 459 | READ32(close->cl_seqid); |
e31a1b66 | 460 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
1da177e4 LT |
461 | |
462 | DECODE_TAIL; | |
463 | } | |
464 | ||
465 | ||
b37ad28b | 466 | static __be32 |
1da177e4 LT |
467 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
468 | { | |
469 | DECODE_HEAD; | |
470 | ||
471 | READ_BUF(12); | |
472 | READ64(commit->co_offset); | |
473 | READ32(commit->co_count); | |
474 | ||
475 | DECODE_TAIL; | |
476 | } | |
477 | ||
b37ad28b | 478 | static __be32 |
1da177e4 LT |
479 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
480 | { | |
481 | DECODE_HEAD; | |
482 | ||
483 | READ_BUF(4); | |
484 | READ32(create->cr_type); | |
485 | switch (create->cr_type) { | |
486 | case NF4LNK: | |
487 | READ_BUF(4); | |
488 | READ32(create->cr_linklen); | |
489 | READ_BUF(create->cr_linklen); | |
490 | SAVEMEM(create->cr_linkname, create->cr_linklen); | |
491 | break; | |
492 | case NF4BLK: | |
493 | case NF4CHR: | |
494 | READ_BUF(8); | |
495 | READ32(create->cr_specdata1); | |
496 | READ32(create->cr_specdata2); | |
497 | break; | |
498 | case NF4SOCK: | |
499 | case NF4FIFO: | |
500 | case NF4DIR: | |
501 | default: | |
502 | break; | |
503 | } | |
504 | ||
505 | READ_BUF(4); | |
506 | READ32(create->cr_namelen); | |
507 | READ_BUF(create->cr_namelen); | |
508 | SAVEMEM(create->cr_name, create->cr_namelen); | |
509 | if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval))) | |
510 | return status; | |
511 | ||
3c8e0316 YZ |
512 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
513 | &create->cr_acl); | |
c0d6fc8a | 514 | if (status) |
1da177e4 LT |
515 | goto out; |
516 | ||
517 | DECODE_TAIL; | |
518 | } | |
519 | ||
b37ad28b | 520 | static inline __be32 |
1da177e4 LT |
521 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
522 | { | |
e31a1b66 | 523 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
1da177e4 LT |
524 | } |
525 | ||
b37ad28b | 526 | static inline __be32 |
1da177e4 LT |
527 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
528 | { | |
529 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
530 | } | |
531 | ||
b37ad28b | 532 | static __be32 |
1da177e4 LT |
533 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
534 | { | |
535 | DECODE_HEAD; | |
536 | ||
537 | READ_BUF(4); | |
538 | READ32(link->li_namelen); | |
539 | READ_BUF(link->li_namelen); | |
540 | SAVEMEM(link->li_name, link->li_namelen); | |
541 | if ((status = check_filename(link->li_name, link->li_namelen, nfserr_inval))) | |
542 | return status; | |
543 | ||
544 | DECODE_TAIL; | |
545 | } | |
546 | ||
b37ad28b | 547 | static __be32 |
1da177e4 LT |
548 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
549 | { | |
550 | DECODE_HEAD; | |
551 | ||
1da177e4 LT |
552 | /* |
553 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
554 | */ | |
555 | READ_BUF(28); | |
556 | READ32(lock->lk_type); | |
557 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) | |
558 | goto xdr_error; | |
559 | READ32(lock->lk_reclaim); | |
560 | READ64(lock->lk_offset); | |
561 | READ64(lock->lk_length); | |
562 | READ32(lock->lk_is_new); | |
563 | ||
564 | if (lock->lk_is_new) { | |
e31a1b66 | 565 | READ_BUF(4); |
1da177e4 | 566 | READ32(lock->lk_new_open_seqid); |
e31a1b66 BH |
567 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
568 | if (status) | |
569 | return status; | |
570 | READ_BUF(8 + sizeof(clientid_t)); | |
1da177e4 LT |
571 | READ32(lock->lk_new_lock_seqid); |
572 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); | |
573 | READ32(lock->lk_new_owner.len); | |
574 | READ_BUF(lock->lk_new_owner.len); | |
575 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
576 | } else { | |
e31a1b66 BH |
577 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
578 | if (status) | |
579 | return status; | |
580 | READ_BUF(4); | |
1da177e4 LT |
581 | READ32(lock->lk_old_lock_seqid); |
582 | } | |
583 | ||
584 | DECODE_TAIL; | |
585 | } | |
586 | ||
b37ad28b | 587 | static __be32 |
1da177e4 LT |
588 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
589 | { | |
590 | DECODE_HEAD; | |
591 | ||
592 | READ_BUF(32); | |
593 | READ32(lockt->lt_type); | |
594 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) | |
595 | goto xdr_error; | |
596 | READ64(lockt->lt_offset); | |
597 | READ64(lockt->lt_length); | |
598 | COPYMEM(&lockt->lt_clientid, 8); | |
599 | READ32(lockt->lt_owner.len); | |
600 | READ_BUF(lockt->lt_owner.len); | |
601 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
602 | ||
603 | DECODE_TAIL; | |
604 | } | |
605 | ||
b37ad28b | 606 | static __be32 |
1da177e4 LT |
607 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
608 | { | |
609 | DECODE_HEAD; | |
610 | ||
e31a1b66 | 611 | READ_BUF(8); |
1da177e4 LT |
612 | READ32(locku->lu_type); |
613 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) | |
614 | goto xdr_error; | |
615 | READ32(locku->lu_seqid); | |
e31a1b66 BH |
616 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
617 | if (status) | |
618 | return status; | |
619 | READ_BUF(16); | |
1da177e4 LT |
620 | READ64(locku->lu_offset); |
621 | READ64(locku->lu_length); | |
622 | ||
623 | DECODE_TAIL; | |
624 | } | |
625 | ||
b37ad28b | 626 | static __be32 |
1da177e4 LT |
627 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
628 | { | |
629 | DECODE_HEAD; | |
630 | ||
631 | READ_BUF(4); | |
632 | READ32(lookup->lo_len); | |
633 | READ_BUF(lookup->lo_len); | |
634 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
635 | if ((status = check_filename(lookup->lo_name, lookup->lo_len, nfserr_noent))) | |
636 | return status; | |
637 | ||
638 | DECODE_TAIL; | |
639 | } | |
640 | ||
04f9e664 BF |
641 | static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *x) |
642 | { | |
643 | __be32 *p; | |
644 | u32 w; | |
645 | ||
646 | READ_BUF(4); | |
647 | READ32(w); | |
648 | *x = w; | |
649 | switch (w & NFS4_SHARE_ACCESS_MASK) { | |
650 | case NFS4_SHARE_ACCESS_READ: | |
651 | case NFS4_SHARE_ACCESS_WRITE: | |
652 | case NFS4_SHARE_ACCESS_BOTH: | |
653 | break; | |
654 | default: | |
655 | return nfserr_bad_xdr; | |
656 | } | |
fc0d14fe | 657 | w &= ~NFS4_SHARE_ACCESS_MASK; |
04f9e664 BF |
658 | if (!w) |
659 | return nfs_ok; | |
660 | if (!argp->minorversion) | |
661 | return nfserr_bad_xdr; | |
662 | switch (w & NFS4_SHARE_WANT_MASK) { | |
663 | case NFS4_SHARE_WANT_NO_PREFERENCE: | |
664 | case NFS4_SHARE_WANT_READ_DELEG: | |
665 | case NFS4_SHARE_WANT_WRITE_DELEG: | |
666 | case NFS4_SHARE_WANT_ANY_DELEG: | |
667 | case NFS4_SHARE_WANT_NO_DELEG: | |
668 | case NFS4_SHARE_WANT_CANCEL: | |
669 | break; | |
670 | default: | |
671 | return nfserr_bad_xdr; | |
672 | } | |
92bac8c5 | 673 | w &= ~NFS4_SHARE_WANT_MASK; |
04f9e664 BF |
674 | if (!w) |
675 | return nfs_ok; | |
676 | switch (w) { | |
677 | case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL: | |
678 | case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED: | |
c668fc6d BH |
679 | case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL | |
680 | NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED): | |
04f9e664 BF |
681 | return nfs_ok; |
682 | } | |
683 | xdr_error: | |
684 | return nfserr_bad_xdr; | |
685 | } | |
686 | ||
687 | static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x) | |
688 | { | |
689 | __be32 *p; | |
690 | ||
691 | READ_BUF(4); | |
692 | READ32(*x); | |
693 | /* Note: unlinke access bits, deny bits may be zero. */ | |
01cd4afa | 694 | if (*x & ~NFS4_SHARE_DENY_BOTH) |
04f9e664 BF |
695 | return nfserr_bad_xdr; |
696 | return nfs_ok; | |
697 | xdr_error: | |
698 | return nfserr_bad_xdr; | |
699 | } | |
700 | ||
a084daf5 BF |
701 | static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o) |
702 | { | |
703 | __be32 *p; | |
704 | ||
705 | READ_BUF(4); | |
706 | READ32(o->len); | |
707 | ||
708 | if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT) | |
709 | return nfserr_bad_xdr; | |
710 | ||
711 | READ_BUF(o->len); | |
712 | SAVEMEM(o->data, o->len); | |
713 | return nfs_ok; | |
714 | xdr_error: | |
715 | return nfserr_bad_xdr; | |
716 | } | |
717 | ||
b37ad28b | 718 | static __be32 |
1da177e4 LT |
719 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
720 | { | |
721 | DECODE_HEAD; | |
722 | ||
723 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
724 | open->op_iattr.ia_valid = 0; | |
fe0750e5 | 725 | open->op_openowner = NULL; |
1da177e4 LT |
726 | |
727 | /* seqid, share_access, share_deny, clientid, ownerlen */ | |
04f9e664 | 728 | READ_BUF(4); |
1da177e4 | 729 | READ32(open->op_seqid); |
04f9e664 BF |
730 | status = nfsd4_decode_share_access(argp, &open->op_share_access); |
731 | if (status) | |
732 | goto xdr_error; | |
733 | status = nfsd4_decode_share_deny(argp, &open->op_share_deny); | |
734 | if (status) | |
735 | goto xdr_error; | |
a084daf5 | 736 | READ_BUF(sizeof(clientid_t)); |
1da177e4 | 737 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); |
a084daf5 BF |
738 | status = nfsd4_decode_opaque(argp, &open->op_owner); |
739 | if (status) | |
740 | goto xdr_error; | |
741 | READ_BUF(4); | |
1da177e4 LT |
742 | READ32(open->op_create); |
743 | switch (open->op_create) { | |
744 | case NFS4_OPEN_NOCREATE: | |
745 | break; | |
746 | case NFS4_OPEN_CREATE: | |
747 | READ_BUF(4); | |
748 | READ32(open->op_createmode); | |
749 | switch (open->op_createmode) { | |
750 | case NFS4_CREATE_UNCHECKED: | |
751 | case NFS4_CREATE_GUARDED: | |
c0d6fc8a | 752 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
3c8e0316 | 753 | &open->op_iattr, &open->op_acl); |
c0d6fc8a | 754 | if (status) |
1da177e4 LT |
755 | goto out; |
756 | break; | |
757 | case NFS4_CREATE_EXCLUSIVE: | |
758 | READ_BUF(8); | |
759 | COPYMEM(open->op_verf.data, 8); | |
760 | break; | |
79fb54ab BH |
761 | case NFS4_CREATE_EXCLUSIVE4_1: |
762 | if (argp->minorversion < 1) | |
763 | goto xdr_error; | |
764 | READ_BUF(8); | |
765 | COPYMEM(open->op_verf.data, 8); | |
766 | status = nfsd4_decode_fattr(argp, open->op_bmval, | |
3c8e0316 | 767 | &open->op_iattr, &open->op_acl); |
79fb54ab BH |
768 | if (status) |
769 | goto out; | |
770 | break; | |
1da177e4 LT |
771 | default: |
772 | goto xdr_error; | |
773 | } | |
774 | break; | |
775 | default: | |
776 | goto xdr_error; | |
777 | } | |
778 | ||
779 | /* open_claim */ | |
780 | READ_BUF(4); | |
781 | READ32(open->op_claim_type); | |
782 | switch (open->op_claim_type) { | |
783 | case NFS4_OPEN_CLAIM_NULL: | |
784 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
785 | READ_BUF(4); | |
786 | READ32(open->op_fname.len); | |
787 | READ_BUF(open->op_fname.len); | |
788 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
789 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) | |
790 | return status; | |
791 | break; | |
792 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
793 | READ_BUF(4); | |
794 | READ32(open->op_delegate_type); | |
795 | break; | |
796 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
e31a1b66 BH |
797 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
798 | if (status) | |
799 | return status; | |
800 | READ_BUF(4); | |
1da177e4 LT |
801 | READ32(open->op_fname.len); |
802 | READ_BUF(open->op_fname.len); | |
803 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
804 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) | |
805 | return status; | |
806 | break; | |
8b289b2c BF |
807 | case NFS4_OPEN_CLAIM_FH: |
808 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
809 | if (argp->minorversion < 1) | |
810 | goto xdr_error; | |
811 | /* void */ | |
812 | break; | |
813 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
814 | if (argp->minorversion < 1) | |
815 | goto xdr_error; | |
816 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); | |
817 | if (status) | |
818 | return status; | |
819 | break; | |
1da177e4 LT |
820 | default: |
821 | goto xdr_error; | |
822 | } | |
823 | ||
824 | DECODE_TAIL; | |
825 | } | |
826 | ||
b37ad28b | 827 | static __be32 |
1da177e4 LT |
828 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
829 | { | |
830 | DECODE_HEAD; | |
831 | ||
e31a1b66 BH |
832 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
833 | if (status) | |
834 | return status; | |
835 | READ_BUF(4); | |
1da177e4 LT |
836 | READ32(open_conf->oc_seqid); |
837 | ||
838 | DECODE_TAIL; | |
839 | } | |
840 | ||
b37ad28b | 841 | static __be32 |
1da177e4 LT |
842 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
843 | { | |
844 | DECODE_HEAD; | |
845 | ||
e31a1b66 BH |
846 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
847 | if (status) | |
848 | return status; | |
04f9e664 | 849 | READ_BUF(4); |
1da177e4 | 850 | READ32(open_down->od_seqid); |
04f9e664 BF |
851 | status = nfsd4_decode_share_access(argp, &open_down->od_share_access); |
852 | if (status) | |
853 | return status; | |
854 | status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny); | |
855 | if (status) | |
856 | return status; | |
1da177e4 LT |
857 | DECODE_TAIL; |
858 | } | |
859 | ||
b37ad28b | 860 | static __be32 |
1da177e4 LT |
861 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
862 | { | |
863 | DECODE_HEAD; | |
864 | ||
865 | READ_BUF(4); | |
866 | READ32(putfh->pf_fhlen); | |
867 | if (putfh->pf_fhlen > NFS4_FHSIZE) | |
868 | goto xdr_error; | |
869 | READ_BUF(putfh->pf_fhlen); | |
870 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
871 | ||
872 | DECODE_TAIL; | |
873 | } | |
874 | ||
b37ad28b | 875 | static __be32 |
1da177e4 LT |
876 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
877 | { | |
878 | DECODE_HEAD; | |
879 | ||
e31a1b66 BH |
880 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
881 | if (status) | |
882 | return status; | |
883 | READ_BUF(12); | |
1da177e4 LT |
884 | READ64(read->rd_offset); |
885 | READ32(read->rd_length); | |
886 | ||
887 | DECODE_TAIL; | |
888 | } | |
889 | ||
b37ad28b | 890 | static __be32 |
1da177e4 LT |
891 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
892 | { | |
893 | DECODE_HEAD; | |
894 | ||
895 | READ_BUF(24); | |
896 | READ64(readdir->rd_cookie); | |
897 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); | |
898 | READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ | |
899 | READ32(readdir->rd_maxcount); | |
900 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) | |
901 | goto out; | |
902 | ||
903 | DECODE_TAIL; | |
904 | } | |
905 | ||
b37ad28b | 906 | static __be32 |
1da177e4 LT |
907 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
908 | { | |
909 | DECODE_HEAD; | |
910 | ||
911 | READ_BUF(4); | |
912 | READ32(remove->rm_namelen); | |
913 | READ_BUF(remove->rm_namelen); | |
914 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
915 | if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent))) | |
916 | return status; | |
917 | ||
918 | DECODE_TAIL; | |
919 | } | |
920 | ||
b37ad28b | 921 | static __be32 |
1da177e4 LT |
922 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
923 | { | |
924 | DECODE_HEAD; | |
925 | ||
926 | READ_BUF(4); | |
927 | READ32(rename->rn_snamelen); | |
928 | READ_BUF(rename->rn_snamelen + 4); | |
929 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); | |
930 | READ32(rename->rn_tnamelen); | |
931 | READ_BUF(rename->rn_tnamelen); | |
932 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
933 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent))) | |
934 | return status; | |
935 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval))) | |
936 | return status; | |
937 | ||
938 | DECODE_TAIL; | |
939 | } | |
940 | ||
b37ad28b | 941 | static __be32 |
1da177e4 LT |
942 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
943 | { | |
944 | DECODE_HEAD; | |
945 | ||
946 | READ_BUF(sizeof(clientid_t)); | |
947 | COPYMEM(clientid, sizeof(clientid_t)); | |
948 | ||
949 | DECODE_TAIL; | |
950 | } | |
951 | ||
dcb488a3 AA |
952 | static __be32 |
953 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
954 | struct nfsd4_secinfo *secinfo) | |
955 | { | |
956 | DECODE_HEAD; | |
957 | ||
958 | READ_BUF(4); | |
959 | READ32(secinfo->si_namelen); | |
960 | READ_BUF(secinfo->si_namelen); | |
961 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
962 | status = check_filename(secinfo->si_name, secinfo->si_namelen, | |
963 | nfserr_noent); | |
964 | if (status) | |
965 | return status; | |
966 | DECODE_TAIL; | |
967 | } | |
968 | ||
04f4ad16 BF |
969 | static __be32 |
970 | nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, | |
971 | struct nfsd4_secinfo_no_name *sin) | |
972 | { | |
973 | DECODE_HEAD; | |
974 | ||
975 | READ_BUF(4); | |
976 | READ32(sin->sin_style); | |
977 | DECODE_TAIL; | |
978 | } | |
979 | ||
b37ad28b | 980 | static __be32 |
1da177e4 LT |
981 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
982 | { | |
e31a1b66 | 983 | __be32 status; |
1da177e4 | 984 | |
e31a1b66 BH |
985 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
986 | if (status) | |
987 | return status; | |
3c8e0316 YZ |
988 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
989 | &setattr->sa_acl); | |
1da177e4 LT |
990 | } |
991 | ||
b37ad28b | 992 | static __be32 |
1da177e4 LT |
993 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
994 | { | |
995 | DECODE_HEAD; | |
996 | ||
a084daf5 | 997 | READ_BUF(8); |
1da177e4 | 998 | COPYMEM(setclientid->se_verf.data, 8); |
1da177e4 | 999 | |
a084daf5 BF |
1000 | status = nfsd4_decode_opaque(argp, &setclientid->se_name); |
1001 | if (status) | |
1002 | return nfserr_bad_xdr; | |
1003 | READ_BUF(8); | |
1da177e4 LT |
1004 | READ32(setclientid->se_callback_prog); |
1005 | READ32(setclientid->se_callback_netid_len); | |
1006 | ||
1007 | READ_BUF(setclientid->se_callback_netid_len + 4); | |
1008 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); | |
1009 | READ32(setclientid->se_callback_addr_len); | |
1010 | ||
1011 | READ_BUF(setclientid->se_callback_addr_len + 4); | |
1012 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); | |
1013 | READ32(setclientid->se_callback_ident); | |
1014 | ||
1015 | DECODE_TAIL; | |
1016 | } | |
1017 | ||
b37ad28b | 1018 | static __be32 |
1da177e4 LT |
1019 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
1020 | { | |
1021 | DECODE_HEAD; | |
1022 | ||
1023 | READ_BUF(8 + sizeof(nfs4_verifier)); | |
1024 | COPYMEM(&scd_c->sc_clientid, 8); | |
1025 | COPYMEM(&scd_c->sc_confirm, sizeof(nfs4_verifier)); | |
1026 | ||
1027 | DECODE_TAIL; | |
1028 | } | |
1029 | ||
1030 | /* Also used for NVERIFY */ | |
b37ad28b | 1031 | static __be32 |
1da177e4 LT |
1032 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
1033 | { | |
1034 | #if 0 | |
1035 | struct nfsd4_compoundargs save = { | |
1036 | .p = argp->p, | |
1037 | .end = argp->end, | |
1038 | .rqstp = argp->rqstp, | |
1039 | }; | |
1040 | u32 ve_bmval[2]; | |
1041 | struct iattr ve_iattr; /* request */ | |
1042 | struct nfs4_acl *ve_acl; /* request */ | |
1043 | #endif | |
1044 | DECODE_HEAD; | |
1045 | ||
1046 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
1047 | goto out; | |
1048 | ||
1049 | /* For convenience's sake, we compare raw xdr'd attributes in | |
1050 | * nfsd4_proc_verify; however we still decode here just to return | |
1051 | * correct error in case of bad xdr. */ | |
1052 | #if 0 | |
1053 | status = nfsd4_decode_fattr(ve_bmval, &ve_iattr, &ve_acl); | |
1054 | if (status == nfserr_inval) { | |
1055 | status = nfserrno(status); | |
1056 | goto out; | |
1057 | } | |
1058 | #endif | |
1059 | READ_BUF(4); | |
1060 | READ32(verify->ve_attrlen); | |
1061 | READ_BUF(verify->ve_attrlen); | |
1062 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
1063 | ||
1064 | DECODE_TAIL; | |
1065 | } | |
1066 | ||
b37ad28b | 1067 | static __be32 |
1da177e4 LT |
1068 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
1069 | { | |
1070 | int avail; | |
1071 | int v; | |
1072 | int len; | |
1073 | DECODE_HEAD; | |
1074 | ||
e31a1b66 BH |
1075 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
1076 | if (status) | |
1077 | return status; | |
1078 | READ_BUF(16); | |
1da177e4 LT |
1079 | READ64(write->wr_offset); |
1080 | READ32(write->wr_stable_how); | |
1081 | if (write->wr_stable_how > 2) | |
1082 | goto xdr_error; | |
1083 | READ32(write->wr_buflen); | |
1084 | ||
1085 | /* Sorry .. no magic macros for this.. * | |
1086 | * READ_BUF(write->wr_buflen); | |
1087 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
1088 | */ | |
1089 | avail = (char*)argp->end - (char*)argp->p; | |
1090 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
1091 | dprintk("NFSD: xdr error (%s:%d)\n", |
1092 | __FILE__, __LINE__); | |
1da177e4 LT |
1093 | goto xdr_error; |
1094 | } | |
3cc03b16 N |
1095 | argp->rqstp->rq_vec[0].iov_base = p; |
1096 | argp->rqstp->rq_vec[0].iov_len = avail; | |
1da177e4 LT |
1097 | v = 0; |
1098 | len = write->wr_buflen; | |
3cc03b16 N |
1099 | while (len > argp->rqstp->rq_vec[v].iov_len) { |
1100 | len -= argp->rqstp->rq_vec[v].iov_len; | |
1da177e4 | 1101 | v++; |
3cc03b16 | 1102 | argp->rqstp->rq_vec[v].iov_base = page_address(argp->pagelist[0]); |
1da177e4 LT |
1103 | argp->pagelist++; |
1104 | if (argp->pagelen >= PAGE_SIZE) { | |
3cc03b16 | 1105 | argp->rqstp->rq_vec[v].iov_len = PAGE_SIZE; |
1da177e4 LT |
1106 | argp->pagelen -= PAGE_SIZE; |
1107 | } else { | |
3cc03b16 | 1108 | argp->rqstp->rq_vec[v].iov_len = argp->pagelen; |
1da177e4 LT |
1109 | argp->pagelen -= len; |
1110 | } | |
1111 | } | |
2ebbc012 AV |
1112 | argp->end = (__be32*) (argp->rqstp->rq_vec[v].iov_base + argp->rqstp->rq_vec[v].iov_len); |
1113 | argp->p = (__be32*) (argp->rqstp->rq_vec[v].iov_base + (XDR_QUADLEN(len) << 2)); | |
3cc03b16 | 1114 | argp->rqstp->rq_vec[v].iov_len = len; |
1da177e4 LT |
1115 | write->wr_vlen = v+1; |
1116 | ||
1117 | DECODE_TAIL; | |
1118 | } | |
1119 | ||
b37ad28b | 1120 | static __be32 |
1da177e4 LT |
1121 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
1122 | { | |
1123 | DECODE_HEAD; | |
1124 | ||
1125 | READ_BUF(12); | |
1126 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
1127 | READ32(rlockowner->rl_owner.len); | |
1128 | READ_BUF(rlockowner->rl_owner.len); | |
1129 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
1130 | ||
60adfc50 AA |
1131 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1132 | return nfserr_inval; | |
1da177e4 LT |
1133 | DECODE_TAIL; |
1134 | } | |
1135 | ||
2db134eb AA |
1136 | static __be32 |
1137 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1138 | struct nfsd4_exchange_id *exid) |
2db134eb | 1139 | { |
5afa040b | 1140 | int dummy, tmp; |
0733d213 AA |
1141 | DECODE_HEAD; |
1142 | ||
1143 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1144 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1145 | ||
a084daf5 BF |
1146 | status = nfsd4_decode_opaque(argp, &exid->clname); |
1147 | if (status) | |
1148 | return nfserr_bad_xdr; | |
0733d213 AA |
1149 | |
1150 | READ_BUF(4); | |
1151 | READ32(exid->flags); | |
1152 | ||
1153 | /* Ignore state_protect4_a */ | |
1154 | READ_BUF(4); | |
1155 | READ32(exid->spa_how); | |
1156 | switch (exid->spa_how) { | |
1157 | case SP4_NONE: | |
1158 | break; | |
1159 | case SP4_MACH_CRED: | |
1160 | /* spo_must_enforce */ | |
1161 | READ_BUF(4); | |
1162 | READ32(dummy); | |
1163 | READ_BUF(dummy * 4); | |
1164 | p += dummy; | |
1165 | ||
1166 | /* spo_must_allow */ | |
1167 | READ_BUF(4); | |
1168 | READ32(dummy); | |
1169 | READ_BUF(dummy * 4); | |
1170 | p += dummy; | |
1171 | break; | |
1172 | case SP4_SSV: | |
1173 | /* ssp_ops */ | |
1174 | READ_BUF(4); | |
1175 | READ32(dummy); | |
1176 | READ_BUF(dummy * 4); | |
1177 | p += dummy; | |
1178 | ||
1179 | READ_BUF(4); | |
1180 | READ32(dummy); | |
1181 | READ_BUF(dummy * 4); | |
1182 | p += dummy; | |
1183 | ||
1184 | /* ssp_hash_algs<> */ | |
1185 | READ_BUF(4); | |
5afa040b MJ |
1186 | READ32(tmp); |
1187 | while (tmp--) { | |
1188 | READ_BUF(4); | |
1189 | READ32(dummy); | |
1190 | READ_BUF(dummy); | |
1191 | p += XDR_QUADLEN(dummy); | |
1192 | } | |
0733d213 AA |
1193 | |
1194 | /* ssp_encr_algs<> */ | |
1195 | READ_BUF(4); | |
5afa040b MJ |
1196 | READ32(tmp); |
1197 | while (tmp--) { | |
1198 | READ_BUF(4); | |
1199 | READ32(dummy); | |
1200 | READ_BUF(dummy); | |
1201 | p += XDR_QUADLEN(dummy); | |
1202 | } | |
0733d213 AA |
1203 | |
1204 | /* ssp_window and ssp_num_gss_handles */ | |
1205 | READ_BUF(8); | |
1206 | READ32(dummy); | |
1207 | READ32(dummy); | |
1208 | break; | |
1209 | default: | |
1210 | goto xdr_error; | |
1211 | } | |
1212 | ||
1213 | /* Ignore Implementation ID */ | |
1214 | READ_BUF(4); /* nfs_impl_id4 array length */ | |
1215 | READ32(dummy); | |
1216 | ||
1217 | if (dummy > 1) | |
1218 | goto xdr_error; | |
1219 | ||
1220 | if (dummy == 1) { | |
1221 | /* nii_domain */ | |
1222 | READ_BUF(4); | |
1223 | READ32(dummy); | |
1224 | READ_BUF(dummy); | |
1225 | p += XDR_QUADLEN(dummy); | |
1226 | ||
1227 | /* nii_name */ | |
1228 | READ_BUF(4); | |
1229 | READ32(dummy); | |
1230 | READ_BUF(dummy); | |
1231 | p += XDR_QUADLEN(dummy); | |
1232 | ||
1233 | /* nii_date */ | |
1234 | READ_BUF(12); | |
1235 | p += 3; | |
1236 | } | |
1237 | DECODE_TAIL; | |
2db134eb AA |
1238 | } |
1239 | ||
1240 | static __be32 | |
1241 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1242 | struct nfsd4_create_session *sess) | |
1243 | { | |
ec6b5d7b AA |
1244 | DECODE_HEAD; |
1245 | ||
1246 | u32 dummy; | |
1247 | char *machine_name; | |
5a02ab7c | 1248 | int i; |
ec6b5d7b AA |
1249 | int nr_secflavs; |
1250 | ||
1251 | READ_BUF(16); | |
1252 | COPYMEM(&sess->clientid, 8); | |
1253 | READ32(sess->seqid); | |
1254 | READ32(sess->flags); | |
1255 | ||
1256 | /* Fore channel attrs */ | |
1257 | READ_BUF(28); | |
1258 | READ32(dummy); /* headerpadsz is always 0 */ | |
1259 | READ32(sess->fore_channel.maxreq_sz); | |
1260 | READ32(sess->fore_channel.maxresp_sz); | |
1261 | READ32(sess->fore_channel.maxresp_cached); | |
1262 | READ32(sess->fore_channel.maxops); | |
1263 | READ32(sess->fore_channel.maxreqs); | |
1264 | READ32(sess->fore_channel.nr_rdma_attrs); | |
1265 | if (sess->fore_channel.nr_rdma_attrs == 1) { | |
1266 | READ_BUF(4); | |
1267 | READ32(sess->fore_channel.rdma_attrs); | |
1268 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { | |
1269 | dprintk("Too many fore channel attr bitmaps!\n"); | |
1270 | goto xdr_error; | |
1271 | } | |
1272 | ||
1273 | /* Back channel attrs */ | |
1274 | READ_BUF(28); | |
1275 | READ32(dummy); /* headerpadsz is always 0 */ | |
1276 | READ32(sess->back_channel.maxreq_sz); | |
1277 | READ32(sess->back_channel.maxresp_sz); | |
1278 | READ32(sess->back_channel.maxresp_cached); | |
1279 | READ32(sess->back_channel.maxops); | |
1280 | READ32(sess->back_channel.maxreqs); | |
1281 | READ32(sess->back_channel.nr_rdma_attrs); | |
1282 | if (sess->back_channel.nr_rdma_attrs == 1) { | |
1283 | READ_BUF(4); | |
1284 | READ32(sess->back_channel.rdma_attrs); | |
1285 | } else if (sess->back_channel.nr_rdma_attrs > 1) { | |
1286 | dprintk("Too many back channel attr bitmaps!\n"); | |
1287 | goto xdr_error; | |
1288 | } | |
1289 | ||
1290 | READ_BUF(8); | |
1291 | READ32(sess->callback_prog); | |
1292 | ||
1293 | /* callback_sec_params4 */ | |
1294 | READ32(nr_secflavs); | |
1295 | for (i = 0; i < nr_secflavs; ++i) { | |
1296 | READ_BUF(4); | |
1297 | READ32(dummy); | |
1298 | switch (dummy) { | |
1299 | case RPC_AUTH_NULL: | |
1300 | /* Nothing to read */ | |
1301 | break; | |
1302 | case RPC_AUTH_UNIX: | |
1303 | READ_BUF(8); | |
1304 | /* stamp */ | |
1305 | READ32(dummy); | |
1306 | ||
1307 | /* machine name */ | |
1308 | READ32(dummy); | |
1309 | READ_BUF(dummy); | |
1310 | SAVEMEM(machine_name, dummy); | |
1311 | ||
1312 | /* uid, gid */ | |
1313 | READ_BUF(8); | |
1314 | READ32(sess->uid); | |
1315 | READ32(sess->gid); | |
1316 | ||
1317 | /* more gids */ | |
1318 | READ_BUF(4); | |
1319 | READ32(dummy); | |
1320 | READ_BUF(dummy * 4); | |
ec6b5d7b AA |
1321 | break; |
1322 | case RPC_AUTH_GSS: | |
1323 | dprintk("RPC_AUTH_GSS callback secflavor " | |
1324 | "not supported!\n"); | |
1325 | READ_BUF(8); | |
1326 | /* gcbp_service */ | |
1327 | READ32(dummy); | |
1328 | /* gcbp_handle_from_server */ | |
1329 | READ32(dummy); | |
1330 | READ_BUF(dummy); | |
1331 | p += XDR_QUADLEN(dummy); | |
1332 | /* gcbp_handle_from_client */ | |
1333 | READ_BUF(4); | |
1334 | READ32(dummy); | |
1335 | READ_BUF(dummy); | |
ec6b5d7b AA |
1336 | break; |
1337 | default: | |
1338 | dprintk("Illegal callback secflavor\n"); | |
1339 | return nfserr_inval; | |
1340 | } | |
1341 | } | |
1342 | DECODE_TAIL; | |
2db134eb AA |
1343 | } |
1344 | ||
1345 | static __be32 | |
1346 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, | |
1347 | struct nfsd4_destroy_session *destroy_session) | |
1348 | { | |
e10e0cfc BH |
1349 | DECODE_HEAD; |
1350 | READ_BUF(NFS4_MAX_SESSIONID_LEN); | |
1351 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1352 | ||
1353 | DECODE_TAIL; | |
2db134eb AA |
1354 | } |
1355 | ||
e1ca12df BS |
1356 | static __be32 |
1357 | nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp, | |
1358 | struct nfsd4_free_stateid *free_stateid) | |
1359 | { | |
1360 | DECODE_HEAD; | |
1361 | ||
1362 | READ_BUF(sizeof(stateid_t)); | |
1363 | READ32(free_stateid->fr_stateid.si_generation); | |
1364 | COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
1365 | ||
1366 | DECODE_TAIL; | |
1367 | } | |
1368 | ||
2db134eb AA |
1369 | static __be32 |
1370 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, | |
1371 | struct nfsd4_sequence *seq) | |
1372 | { | |
b85d4c01 BH |
1373 | DECODE_HEAD; |
1374 | ||
1375 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); | |
1376 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1377 | READ32(seq->seqid); | |
1378 | READ32(seq->slotid); | |
1379 | READ32(seq->maxslots); | |
1380 | READ32(seq->cachethis); | |
1381 | ||
1382 | DECODE_TAIL; | |
2db134eb AA |
1383 | } |
1384 | ||
17456804 BS |
1385 | static __be32 |
1386 | nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid) | |
1387 | { | |
1388 | unsigned int nbytes; | |
1389 | stateid_t si; | |
1390 | int i; | |
1391 | __be32 *p; | |
1392 | __be32 status; | |
1393 | ||
1394 | READ_BUF(4); | |
1395 | test_stateid->ts_num_ids = ntohl(*p++); | |
1396 | ||
1397 | nbytes = test_stateid->ts_num_ids * sizeof(stateid_t); | |
1398 | if (nbytes > (u32)((char *)argp->end - (char *)argp->p)) | |
1399 | goto xdr_error; | |
1400 | ||
1401 | test_stateid->ts_saved_args = argp; | |
1402 | save_buf(argp, &test_stateid->ts_savedp); | |
1403 | ||
1404 | for (i = 0; i < test_stateid->ts_num_ids; i++) { | |
1405 | status = nfsd4_decode_stateid(argp, &si); | |
1406 | if (status) | |
1407 | return status; | |
1408 | } | |
1409 | ||
1410 | status = 0; | |
1411 | out: | |
1412 | return status; | |
1413 | xdr_error: | |
1414 | dprintk("NFSD: xdr error (%s:%d)\n", __FILE__, __LINE__); | |
1415 | status = nfserr_bad_xdr; | |
1416 | goto out; | |
1417 | } | |
1418 | ||
345c2842 MJ |
1419 | static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_clientid *dc) |
1420 | { | |
1421 | DECODE_HEAD; | |
1422 | ||
1423 | READ_BUF(8); | |
1424 | COPYMEM(&dc->clientid, 8); | |
1425 | ||
1426 | DECODE_TAIL; | |
1427 | } | |
1428 | ||
4dc6ec00 BF |
1429 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) |
1430 | { | |
1431 | DECODE_HEAD; | |
1432 | ||
1433 | READ_BUF(4); | |
1434 | READ32(rc->rca_one_fs); | |
1435 | ||
1436 | DECODE_TAIL; | |
1437 | } | |
1438 | ||
347e0ad9 BH |
1439 | static __be32 |
1440 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1441 | { | |
1442 | return nfs_ok; | |
1443 | } | |
1444 | ||
3c375c6f BH |
1445 | static __be32 |
1446 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1447 | { | |
1e685ec2 | 1448 | return nfserr_notsupp; |
3c375c6f BH |
1449 | } |
1450 | ||
347e0ad9 BH |
1451 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1452 | ||
1453 | static nfsd4_dec nfsd4_dec_ops[] = { | |
ad1060c8 BF |
1454 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1455 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1456 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1457 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1458 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1459 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1460 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1461 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1462 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1463 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1464 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1465 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1466 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1467 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1468 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1469 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1470 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1471 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1472 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1473 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
a1c8c4d1 | 1474 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_noop, |
ad1060c8 BF |
1475 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1476 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1477 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1478 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1479 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1480 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1481 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1482 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1483 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1484 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1485 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1486 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1487 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1488 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1489 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1490 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
347e0ad9 BH |
1491 | }; |
1492 | ||
2db134eb | 1493 | static nfsd4_dec nfsd41_dec_ops[] = { |
9064caae RD |
1494 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1495 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1496 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1497 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1498 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1499 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1500 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1501 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1502 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1503 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1504 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1505 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1506 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1507 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1508 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1509 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1510 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1511 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1512 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1513 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
1514 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1515 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1516 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1517 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1518 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1519 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1520 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1521 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1522 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1523 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1524 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1525 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1526 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1527 | [OP_SETCLIENTID_CONFIRM]= (nfsd4_dec)nfsd4_decode_notsupp, | |
1528 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1529 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1530 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_notsupp, | |
2db134eb AA |
1531 | |
1532 | /* new operations for NFSv4.1 */ | |
9064caae | 1533 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_notsupp, |
1d1bc8f2 | 1534 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
9064caae RD |
1535 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
1536 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
1537 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
e1ca12df | 1538 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, |
9064caae RD |
1539 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
1540 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1541 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1542 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1543 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1544 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
04f4ad16 | 1545 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
9064caae RD |
1546 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
1547 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
17456804 | 1548 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid, |
9064caae | 1549 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
345c2842 | 1550 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, |
4dc6ec00 | 1551 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
2db134eb AA |
1552 | }; |
1553 | ||
f2feb96b BH |
1554 | struct nfsd4_minorversion_ops { |
1555 | nfsd4_dec *decoders; | |
1556 | int nops; | |
1557 | }; | |
1558 | ||
1559 | static struct nfsd4_minorversion_ops nfsd4_minorversion[] = { | |
ad1060c8 | 1560 | [0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) }, |
2db134eb | 1561 | [1] = { nfsd41_dec_ops, ARRAY_SIZE(nfsd41_dec_ops) }, |
f2feb96b BH |
1562 | }; |
1563 | ||
b37ad28b | 1564 | static __be32 |
1da177e4 LT |
1565 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1566 | { | |
1567 | DECODE_HEAD; | |
1568 | struct nfsd4_op *op; | |
f2feb96b | 1569 | struct nfsd4_minorversion_ops *ops; |
1091006c | 1570 | bool cachethis = false; |
1da177e4 LT |
1571 | int i; |
1572 | ||
1573 | /* | |
1574 | * XXX: According to spec, we should check the tag | |
1575 | * for UTF-8 compliance. I'm postponing this for | |
1576 | * now because it seems that some clients do use | |
1577 | * binary tags. | |
1578 | */ | |
1579 | READ_BUF(4); | |
1580 | READ32(argp->taglen); | |
1581 | READ_BUF(argp->taglen + 8); | |
1582 | SAVEMEM(argp->tag, argp->taglen); | |
1583 | READ32(argp->minorversion); | |
1584 | READ32(argp->opcnt); | |
1585 | ||
1586 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1587 | goto xdr_error; | |
1588 | if (argp->opcnt > 100) | |
1589 | goto xdr_error; | |
1590 | ||
e8c96f8c | 1591 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
1da177e4 LT |
1592 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1593 | if (!argp->ops) { | |
1594 | argp->ops = argp->iops; | |
817cb9d4 | 1595 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1596 | goto xdr_error; |
1597 | } | |
1598 | } | |
1599 | ||
f2feb96b | 1600 | if (argp->minorversion >= ARRAY_SIZE(nfsd4_minorversion)) |
30cff1ff BH |
1601 | argp->opcnt = 0; |
1602 | ||
f2feb96b | 1603 | ops = &nfsd4_minorversion[argp->minorversion]; |
1da177e4 LT |
1604 | for (i = 0; i < argp->opcnt; i++) { |
1605 | op = &argp->ops[i]; | |
1606 | op->replay = NULL; | |
1607 | ||
1608 | /* | |
1609 | * We can't use READ_BUF() here because we need to handle | |
1610 | * a missing opcode as an OP_WRITE + 1. So we need to check | |
1611 | * to see if we're truly at the end of our buffer or if there | |
1612 | * is another page we need to flip to. | |
1613 | */ | |
1614 | ||
1615 | if (argp->p == argp->end) { | |
1616 | if (argp->pagelen < 4) { | |
1617 | /* There isn't an opcode still on the wire */ | |
1618 | op->opnum = OP_WRITE + 1; | |
1619 | op->status = nfserr_bad_xdr; | |
1620 | argp->opcnt = i+1; | |
1621 | break; | |
1622 | } | |
1623 | ||
1624 | /* | |
1625 | * False alarm. We just hit a page boundary, but there | |
1626 | * is still data available. Move pointer across page | |
1627 | * boundary. *snip from READ_BUF* | |
1628 | */ | |
1629 | argp->p = page_address(argp->pagelist[0]); | |
1630 | argp->pagelist++; | |
1631 | if (argp->pagelen < PAGE_SIZE) { | |
2bc3c117 | 1632 | argp->end = argp->p + (argp->pagelen>>2); |
1da177e4 LT |
1633 | argp->pagelen = 0; |
1634 | } else { | |
2bc3c117 | 1635 | argp->end = argp->p + (PAGE_SIZE>>2); |
1da177e4 LT |
1636 | argp->pagelen -= PAGE_SIZE; |
1637 | } | |
1638 | } | |
1639 | op->opnum = ntohl(*argp->p++); | |
1640 | ||
de3cab79 | 1641 | if (op->opnum >= FIRST_NFS4_OP && op->opnum <= LAST_NFS4_OP) |
f2feb96b | 1642 | op->status = ops->decoders[op->opnum](argp, &op->u); |
347e0ad9 | 1643 | else { |
1da177e4 LT |
1644 | op->opnum = OP_ILLEGAL; |
1645 | op->status = nfserr_op_illegal; | |
1da177e4 LT |
1646 | } |
1647 | ||
1648 | if (op->status) { | |
1649 | argp->opcnt = i+1; | |
1650 | break; | |
1651 | } | |
1091006c BF |
1652 | /* |
1653 | * We'll try to cache the result in the DRC if any one | |
1654 | * op in the compound wants to be cached: | |
1655 | */ | |
1656 | cachethis |= nfsd4_cache_this_op(op); | |
1da177e4 | 1657 | } |
1091006c BF |
1658 | /* Sessions make the DRC unnecessary: */ |
1659 | if (argp->minorversion) | |
1660 | cachethis = false; | |
1661 | argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; | |
1da177e4 LT |
1662 | |
1663 | DECODE_TAIL; | |
1664 | } | |
1da177e4 | 1665 | |
1da177e4 LT |
1666 | #define WRITE32(n) *p++ = htonl(n) |
1667 | #define WRITE64(n) do { \ | |
1668 | *p++ = htonl((u32)((n) >> 32)); \ | |
1669 | *p++ = htonl((u32)(n)); \ | |
1670 | } while (0) | |
5108b276 | 1671 | #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \ |
1da177e4 LT |
1672 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ |
1673 | memcpy(p, ptr, nbytes); \ | |
1674 | p += XDR_QUADLEN(nbytes); \ | |
5108b276 | 1675 | }} while (0) |
c654b8a9 BF |
1676 | |
1677 | static void write32(__be32 **p, u32 n) | |
1678 | { | |
1679 | *(*p)++ = n; | |
1680 | } | |
1681 | ||
1682 | static void write64(__be32 **p, u64 n) | |
1683 | { | |
1684 | write32(p, (u32)(n >> 32)); | |
1685 | write32(p, (u32)n); | |
1686 | } | |
1687 | ||
1688 | static void write_change(__be32 **p, struct kstat *stat, struct inode *inode) | |
1689 | { | |
1690 | if (IS_I_VERSION(inode)) { | |
1691 | write64(p, inode->i_version); | |
1692 | } else { | |
1693 | write32(p, stat->ctime.tv_sec); | |
1694 | write32(p, stat->ctime.tv_nsec); | |
1695 | } | |
1696 | } | |
1697 | ||
1698 | static void write_cinfo(__be32 **p, struct nfsd4_change_info *c) | |
1699 | { | |
1700 | write32(p, c->atomic); | |
1701 | if (c->change_supported) { | |
1702 | write64(p, c->before_change); | |
1703 | write64(p, c->after_change); | |
1704 | } else { | |
1705 | write32(p, c->before_ctime_sec); | |
1706 | write32(p, c->before_ctime_nsec); | |
1707 | write32(p, c->after_ctime_sec); | |
1708 | write32(p, c->after_ctime_nsec); | |
1709 | } | |
1710 | } | |
1da177e4 LT |
1711 | |
1712 | #define RESERVE_SPACE(nbytes) do { \ | |
1713 | p = resp->p; \ | |
1714 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ | |
1715 | } while (0) | |
1716 | #define ADJUST_ARGS() resp->p = p | |
1717 | ||
1718 | /* | |
1719 | * Header routine to setup seqid operation replay cache | |
1720 | */ | |
1721 | #define ENCODE_SEQID_OP_HEAD \ | |
2ebbc012 | 1722 | __be32 *save; \ |
1da177e4 LT |
1723 | \ |
1724 | save = resp->p; | |
1725 | ||
1726 | /* | |
7fb64cee N |
1727 | * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This |
1728 | * is where sequence id's are incremented, and the replay cache is filled. | |
1729 | * Note that we increment sequence id's here, at the last moment, so we're sure | |
1730 | * we know whether the error to be returned is a sequence id mutating error. | |
1da177e4 LT |
1731 | */ |
1732 | ||
f3e42237 BF |
1733 | static void encode_seqid_op_tail(struct nfsd4_compoundres *resp, __be32 *save, __be32 nfserr) |
1734 | { | |
1735 | struct nfs4_stateowner *stateowner = resp->cstate.replay_owner; | |
1736 | ||
1737 | if (seqid_mutating_err(ntohl(nfserr)) && stateowner) { | |
1738 | stateowner->so_seqid++; | |
1739 | stateowner->so_replay.rp_status = nfserr; | |
1740 | stateowner->so_replay.rp_buflen = | |
1741 | (char *)resp->p - (char *)save; | |
1742 | memcpy(stateowner->so_replay.rp_buf, save, | |
1743 | stateowner->so_replay.rp_buflen); | |
38c387b5 | 1744 | nfsd4_purge_closed_stateid(stateowner); |
f3e42237 BF |
1745 | } |
1746 | } | |
1da177e4 | 1747 | |
81c3f413 | 1748 | /* Encode as an array of strings the string given with components |
3ad2f3fb | 1749 | * separated @sep. |
81c3f413 | 1750 | */ |
b37ad28b | 1751 | static __be32 nfsd4_encode_components(char sep, char *components, |
2ebbc012 | 1752 | __be32 **pp, int *buflen) |
81c3f413 | 1753 | { |
2ebbc012 AV |
1754 | __be32 *p = *pp; |
1755 | __be32 *countp = p; | |
81c3f413 BF |
1756 | int strlen, count=0; |
1757 | char *str, *end; | |
1758 | ||
1759 | dprintk("nfsd4_encode_components(%s)\n", components); | |
1760 | if ((*buflen -= 4) < 0) | |
1761 | return nfserr_resource; | |
1762 | WRITE32(0); /* We will fill this in with @count later */ | |
1763 | end = str = components; | |
1764 | while (*end) { | |
1765 | for (; *end && (*end != sep); end++) | |
1766 | ; /* Point to end of component */ | |
1767 | strlen = end - str; | |
1768 | if (strlen) { | |
1769 | if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0) | |
1770 | return nfserr_resource; | |
1771 | WRITE32(strlen); | |
1772 | WRITEMEM(str, strlen); | |
1773 | count++; | |
1774 | } | |
1775 | else | |
1776 | end++; | |
1777 | str = end; | |
1778 | } | |
1779 | *pp = p; | |
1780 | p = countp; | |
1781 | WRITE32(count); | |
1782 | return 0; | |
1783 | } | |
1784 | ||
1785 | /* | |
1786 | * encode a location element of a fs_locations structure | |
1787 | */ | |
b37ad28b | 1788 | static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location, |
2ebbc012 | 1789 | __be32 **pp, int *buflen) |
81c3f413 | 1790 | { |
b37ad28b | 1791 | __be32 status; |
2ebbc012 | 1792 | __be32 *p = *pp; |
81c3f413 BF |
1793 | |
1794 | status = nfsd4_encode_components(':', location->hosts, &p, buflen); | |
1795 | if (status) | |
1796 | return status; | |
1797 | status = nfsd4_encode_components('/', location->path, &p, buflen); | |
1798 | if (status) | |
1799 | return status; | |
1800 | *pp = p; | |
1801 | return 0; | |
1802 | } | |
1803 | ||
1804 | /* | |
ed748aac | 1805 | * Encode a path in RFC3530 'pathname4' format |
81c3f413 | 1806 | */ |
ed748aac TM |
1807 | static __be32 nfsd4_encode_path(const struct path *root, |
1808 | const struct path *path, __be32 **pp, int *buflen) | |
81c3f413 | 1809 | { |
ed748aac TM |
1810 | struct path cur = { |
1811 | .mnt = path->mnt, | |
1812 | .dentry = path->dentry, | |
1813 | }; | |
1814 | __be32 *p = *pp; | |
1815 | struct dentry **components = NULL; | |
1816 | unsigned int ncomponents = 0; | |
1817 | __be32 err = nfserr_jukebox; | |
81c3f413 | 1818 | |
ed748aac | 1819 | dprintk("nfsd4_encode_components("); |
81c3f413 | 1820 | |
ed748aac TM |
1821 | path_get(&cur); |
1822 | /* First walk the path up to the nfsd root, and store the | |
1823 | * dentries/path components in an array. | |
1824 | */ | |
1825 | for (;;) { | |
1826 | if (cur.dentry == root->dentry && cur.mnt == root->mnt) | |
1827 | break; | |
1828 | if (cur.dentry == cur.mnt->mnt_root) { | |
1829 | if (follow_up(&cur)) | |
1830 | continue; | |
1831 | goto out_free; | |
1832 | } | |
1833 | if ((ncomponents & 15) == 0) { | |
1834 | struct dentry **new; | |
1835 | new = krealloc(components, | |
1836 | sizeof(*new) * (ncomponents + 16), | |
1837 | GFP_KERNEL); | |
1838 | if (!new) | |
1839 | goto out_free; | |
1840 | components = new; | |
1841 | } | |
1842 | components[ncomponents++] = cur.dentry; | |
1843 | cur.dentry = dget_parent(cur.dentry); | |
1844 | } | |
81c3f413 | 1845 | |
ed748aac TM |
1846 | *buflen -= 4; |
1847 | if (*buflen < 0) | |
1848 | goto out_free; | |
1849 | WRITE32(ncomponents); | |
1850 | ||
1851 | while (ncomponents) { | |
1852 | struct dentry *dentry = components[ncomponents - 1]; | |
1853 | unsigned int len = dentry->d_name.len; | |
1854 | ||
1855 | *buflen -= 4 + (XDR_QUADLEN(len) << 2); | |
1856 | if (*buflen < 0) | |
1857 | goto out_free; | |
1858 | WRITE32(len); | |
1859 | WRITEMEM(dentry->d_name.name, len); | |
1860 | dprintk("/%s", dentry->d_name.name); | |
1861 | dput(dentry); | |
1862 | ncomponents--; | |
81c3f413 | 1863 | } |
ed748aac TM |
1864 | |
1865 | *pp = p; | |
1866 | err = 0; | |
1867 | out_free: | |
1868 | dprintk(")\n"); | |
1869 | while (ncomponents) | |
1870 | dput(components[--ncomponents]); | |
1871 | kfree(components); | |
1872 | path_put(&cur); | |
1873 | return err; | |
1874 | } | |
1875 | ||
1876 | static __be32 nfsd4_encode_fsloc_fsroot(struct svc_rqst *rqstp, | |
1877 | const struct path *path, __be32 **pp, int *buflen) | |
1878 | { | |
1879 | struct svc_export *exp_ps; | |
1880 | __be32 res; | |
1881 | ||
1882 | exp_ps = rqst_find_fsidzero_export(rqstp); | |
1883 | if (IS_ERR(exp_ps)) | |
1884 | return nfserrno(PTR_ERR(exp_ps)); | |
1885 | res = nfsd4_encode_path(&exp_ps->ex_path, path, pp, buflen); | |
1886 | exp_put(exp_ps); | |
1887 | return res; | |
81c3f413 BF |
1888 | } |
1889 | ||
1890 | /* | |
1891 | * encode a fs_locations structure | |
1892 | */ | |
b37ad28b | 1893 | static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp, |
81c3f413 | 1894 | struct svc_export *exp, |
2ebbc012 | 1895 | __be32 **pp, int *buflen) |
81c3f413 | 1896 | { |
b37ad28b | 1897 | __be32 status; |
cc45f017 | 1898 | int i; |
2ebbc012 | 1899 | __be32 *p = *pp; |
81c3f413 | 1900 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
81c3f413 | 1901 | |
ed748aac | 1902 | status = nfsd4_encode_fsloc_fsroot(rqstp, &exp->ex_path, &p, buflen); |
81c3f413 BF |
1903 | if (status) |
1904 | return status; | |
1905 | if ((*buflen -= 4) < 0) | |
1906 | return nfserr_resource; | |
1907 | WRITE32(fslocs->locations_count); | |
1908 | for (i=0; i<fslocs->locations_count; i++) { | |
1909 | status = nfsd4_encode_fs_location4(&fslocs->locations[i], | |
1910 | &p, buflen); | |
1911 | if (status) | |
1912 | return status; | |
1913 | } | |
1914 | *pp = p; | |
1915 | return 0; | |
1916 | } | |
1da177e4 | 1917 | |
3d2544b1 BF |
1918 | static u32 nfs4_file_type(umode_t mode) |
1919 | { | |
1920 | switch (mode & S_IFMT) { | |
1921 | case S_IFIFO: return NF4FIFO; | |
1922 | case S_IFCHR: return NF4CHR; | |
1923 | case S_IFDIR: return NF4DIR; | |
1924 | case S_IFBLK: return NF4BLK; | |
1925 | case S_IFLNK: return NF4LNK; | |
1926 | case S_IFREG: return NF4REG; | |
1927 | case S_IFSOCK: return NF4SOCK; | |
1928 | default: return NF4BAD; | |
1929 | }; | |
1930 | } | |
1da177e4 | 1931 | |
b37ad28b | 1932 | static __be32 |
1da177e4 | 1933 | nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
2ebbc012 | 1934 | __be32 **p, int *buflen) |
1da177e4 LT |
1935 | { |
1936 | int status; | |
1937 | ||
1938 | if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) | |
1939 | return nfserr_resource; | |
1940 | if (whotype != NFS4_ACL_WHO_NAMED) | |
1941 | status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); | |
1942 | else if (group) | |
1943 | status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1944 | else | |
1945 | status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1946 | if (status < 0) | |
1947 | return nfserrno(status); | |
1948 | *p = xdr_encode_opaque(*p, NULL, status); | |
1949 | *buflen -= (XDR_QUADLEN(status) << 2) + 4; | |
1950 | BUG_ON(*buflen < 0); | |
1951 | return 0; | |
1952 | } | |
1953 | ||
b37ad28b | 1954 | static inline __be32 |
2ebbc012 | 1955 | nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, __be32 **p, int *buflen) |
1da177e4 LT |
1956 | { |
1957 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen); | |
1958 | } | |
1959 | ||
b37ad28b | 1960 | static inline __be32 |
2ebbc012 | 1961 | nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, __be32 **p, int *buflen) |
1da177e4 LT |
1962 | { |
1963 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen); | |
1964 | } | |
1965 | ||
b37ad28b | 1966 | static inline __be32 |
1da177e4 | 1967 | nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
2ebbc012 | 1968 | __be32 **p, int *buflen) |
1da177e4 LT |
1969 | { |
1970 | return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen); | |
1971 | } | |
1972 | ||
42ca0993 BF |
1973 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
1974 | FATTR4_WORD0_RDATTR_ERROR) | |
1975 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
1976 | ||
b37ad28b | 1977 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
42ca0993 BF |
1978 | { |
1979 | /* As per referral draft: */ | |
1980 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
1981 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
1982 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
1983 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
1984 | *rdattr_err = NFSERR_MOVED; | |
1985 | else | |
1986 | return nfserr_moved; | |
1987 | } | |
1988 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
1989 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
1990 | return 0; | |
1991 | } | |
1da177e4 LT |
1992 | |
1993 | /* | |
1994 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
1995 | * ourselves. | |
1996 | * | |
1997 | * @countp is the buffer size in _words_; upon successful return this becomes | |
1998 | * replaced with the number of words written. | |
1999 | */ | |
b37ad28b | 2000 | __be32 |
1da177e4 | 2001 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, |
2ebbc012 | 2002 | struct dentry *dentry, __be32 *buffer, int *countp, u32 *bmval, |
406a7ea9 | 2003 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
2004 | { |
2005 | u32 bmval0 = bmval[0]; | |
2006 | u32 bmval1 = bmval[1]; | |
7e705706 | 2007 | u32 bmval2 = bmval[2]; |
1da177e4 LT |
2008 | struct kstat stat; |
2009 | struct svc_fh tempfh; | |
2010 | struct kstatfs statfs; | |
2011 | int buflen = *countp << 2; | |
2ebbc012 | 2012 | __be32 *attrlenp; |
1da177e4 LT |
2013 | u32 dummy; |
2014 | u64 dummy64; | |
42ca0993 | 2015 | u32 rdattr_err = 0; |
2ebbc012 | 2016 | __be32 *p = buffer; |
b37ad28b | 2017 | __be32 status; |
b8dd7b9a | 2018 | int err; |
1da177e4 LT |
2019 | int aclsupport = 0; |
2020 | struct nfs4_acl *acl = NULL; | |
7e705706 AA |
2021 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
2022 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
2023 | struct path path = { |
2024 | .mnt = exp->ex_path.mnt, | |
2025 | .dentry = dentry, | |
2026 | }; | |
1da177e4 LT |
2027 | |
2028 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
7e705706 AA |
2029 | BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); |
2030 | BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); | |
2031 | BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); | |
1da177e4 | 2032 | |
42ca0993 | 2033 | if (exp->ex_fslocs.migrated) { |
7e705706 | 2034 | BUG_ON(bmval[2]); |
42ca0993 BF |
2035 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); |
2036 | if (status) | |
2037 | goto out; | |
2038 | } | |
2039 | ||
54775491 | 2040 | err = vfs_getattr(exp->ex_path.mnt, dentry, &stat); |
b8dd7b9a | 2041 | if (err) |
1da177e4 | 2042 | goto out_nfserr; |
a16e92ed BF |
2043 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | |
2044 | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
2045 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
2046 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 2047 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 2048 | if (err) |
1da177e4 LT |
2049 | goto out_nfserr; |
2050 | } | |
2051 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
2052 | fh_init(&tempfh, NFS4_FHSIZE); | |
2053 | status = fh_compose(&tempfh, exp, dentry, NULL); | |
2054 | if (status) | |
2055 | goto out; | |
2056 | fhp = &tempfh; | |
2057 | } | |
2058 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
2059 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
b8dd7b9a AV |
2060 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
2061 | aclsupport = (err == 0); | |
1da177e4 | 2062 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 2063 | if (err == -EOPNOTSUPP) |
1da177e4 | 2064 | bmval0 &= ~FATTR4_WORD0_ACL; |
b8dd7b9a | 2065 | else if (err == -EINVAL) { |
1da177e4 LT |
2066 | status = nfserr_attrnotsupp; |
2067 | goto out; | |
b8dd7b9a | 2068 | } else if (err != 0) |
1da177e4 LT |
2069 | goto out_nfserr; |
2070 | } | |
2071 | } | |
1da177e4 | 2072 | |
2b44f1ba BH |
2073 | if (bmval2) { |
2074 | if ((buflen -= 16) < 0) | |
2075 | goto out_resource; | |
7e705706 AA |
2076 | WRITE32(3); |
2077 | WRITE32(bmval0); | |
2078 | WRITE32(bmval1); | |
2079 | WRITE32(bmval2); | |
2b44f1ba BH |
2080 | } else if (bmval1) { |
2081 | if ((buflen -= 12) < 0) | |
2082 | goto out_resource; | |
7e705706 AA |
2083 | WRITE32(2); |
2084 | WRITE32(bmval0); | |
2085 | WRITE32(bmval1); | |
2086 | } else { | |
2b44f1ba BH |
2087 | if ((buflen -= 8) < 0) |
2088 | goto out_resource; | |
7e705706 AA |
2089 | WRITE32(1); |
2090 | WRITE32(bmval0); | |
2091 | } | |
1da177e4 LT |
2092 | attrlenp = p++; /* to be backfilled later */ |
2093 | ||
2094 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
7e705706 AA |
2095 | u32 word0 = nfsd_suppattrs0(minorversion); |
2096 | u32 word1 = nfsd_suppattrs1(minorversion); | |
2097 | u32 word2 = nfsd_suppattrs2(minorversion); | |
2098 | ||
42ca0993 BF |
2099 | if (!aclsupport) |
2100 | word0 &= ~FATTR4_WORD0_ACL; | |
7e705706 | 2101 | if (!word2) { |
2b44f1ba BH |
2102 | if ((buflen -= 12) < 0) |
2103 | goto out_resource; | |
7e705706 AA |
2104 | WRITE32(2); |
2105 | WRITE32(word0); | |
2106 | WRITE32(word1); | |
2107 | } else { | |
2b44f1ba BH |
2108 | if ((buflen -= 16) < 0) |
2109 | goto out_resource; | |
7e705706 AA |
2110 | WRITE32(3); |
2111 | WRITE32(word0); | |
2112 | WRITE32(word1); | |
2113 | WRITE32(word2); | |
2114 | } | |
1da177e4 LT |
2115 | } |
2116 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
2117 | if ((buflen -= 4) < 0) | |
2118 | goto out_resource; | |
3d2544b1 | 2119 | dummy = nfs4_file_type(stat.mode); |
1da177e4 LT |
2120 | if (dummy == NF4BAD) |
2121 | goto out_serverfault; | |
2122 | WRITE32(dummy); | |
2123 | } | |
2124 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
2125 | if ((buflen -= 4) < 0) | |
2126 | goto out_resource; | |
49640001 | 2127 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
e34ac862 | 2128 | WRITE32(NFS4_FH_PERSISTENT); |
49640001 | 2129 | else |
e34ac862 | 2130 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
1da177e4 LT |
2131 | } |
2132 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
1da177e4 LT |
2133 | if ((buflen -= 8) < 0) |
2134 | goto out_resource; | |
c654b8a9 | 2135 | write_change(&p, &stat, dentry->d_inode); |
1da177e4 LT |
2136 | } |
2137 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
2138 | if ((buflen -= 8) < 0) | |
2139 | goto out_resource; | |
2140 | WRITE64(stat.size); | |
2141 | } | |
2142 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
2143 | if ((buflen -= 4) < 0) | |
2144 | goto out_resource; | |
2145 | WRITE32(1); | |
2146 | } | |
2147 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
2148 | if ((buflen -= 4) < 0) | |
2149 | goto out_resource; | |
2150 | WRITE32(1); | |
2151 | } | |
2152 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
2153 | if ((buflen -= 4) < 0) | |
2154 | goto out_resource; | |
2155 | WRITE32(0); | |
2156 | } | |
2157 | if (bmval0 & FATTR4_WORD0_FSID) { | |
2158 | if ((buflen -= 16) < 0) | |
2159 | goto out_resource; | |
42ca0993 BF |
2160 | if (exp->ex_fslocs.migrated) { |
2161 | WRITE64(NFS4_REFERRAL_FSID_MAJOR); | |
2162 | WRITE64(NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
2163 | } else switch(fsid_source(fhp)) { |
2164 | case FSIDSOURCE_FSID: | |
1da177e4 LT |
2165 | WRITE64((u64)exp->ex_fsid); |
2166 | WRITE64((u64)0); | |
af6a4e28 N |
2167 | break; |
2168 | case FSIDSOURCE_DEV: | |
1da177e4 LT |
2169 | WRITE32(0); |
2170 | WRITE32(MAJOR(stat.dev)); | |
2171 | WRITE32(0); | |
2172 | WRITE32(MINOR(stat.dev)); | |
af6a4e28 N |
2173 | break; |
2174 | case FSIDSOURCE_UUID: | |
2175 | WRITEMEM(exp->ex_uuid, 16); | |
2176 | break; | |
1da177e4 LT |
2177 | } |
2178 | } | |
2179 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
2180 | if ((buflen -= 4) < 0) | |
2181 | goto out_resource; | |
2182 | WRITE32(0); | |
2183 | } | |
2184 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
2185 | if ((buflen -= 4) < 0) | |
2186 | goto out_resource; | |
cf07d2ea | 2187 | WRITE32(nfsd4_lease); |
1da177e4 LT |
2188 | } |
2189 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
2190 | if ((buflen -= 4) < 0) | |
2191 | goto out_resource; | |
42ca0993 | 2192 | WRITE32(rdattr_err); |
1da177e4 LT |
2193 | } |
2194 | if (bmval0 & FATTR4_WORD0_ACL) { | |
2195 | struct nfs4_ace *ace; | |
1da177e4 LT |
2196 | |
2197 | if (acl == NULL) { | |
2198 | if ((buflen -= 4) < 0) | |
2199 | goto out_resource; | |
2200 | ||
2201 | WRITE32(0); | |
2202 | goto out_acl; | |
2203 | } | |
2204 | if ((buflen -= 4) < 0) | |
2205 | goto out_resource; | |
2206 | WRITE32(acl->naces); | |
2207 | ||
28e05dd8 | 2208 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
1da177e4 LT |
2209 | if ((buflen -= 4*3) < 0) |
2210 | goto out_resource; | |
2211 | WRITE32(ace->type); | |
2212 | WRITE32(ace->flag); | |
2213 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); | |
2214 | status = nfsd4_encode_aclname(rqstp, ace->whotype, | |
2215 | ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP, | |
2216 | &p, &buflen); | |
2217 | if (status == nfserr_resource) | |
2218 | goto out_resource; | |
2219 | if (status) | |
2220 | goto out; | |
2221 | } | |
2222 | } | |
2223 | out_acl: | |
2224 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
2225 | if ((buflen -= 4) < 0) | |
2226 | goto out_resource; | |
2227 | WRITE32(aclsupport ? | |
2228 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); | |
2229 | } | |
2230 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
2231 | if ((buflen -= 4) < 0) | |
2232 | goto out_resource; | |
2233 | WRITE32(1); | |
2234 | } | |
2235 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
2236 | if ((buflen -= 4) < 0) | |
2237 | goto out_resource; | |
2238 | WRITE32(1); | |
2239 | } | |
2240 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
2241 | if ((buflen -= 4) < 0) | |
2242 | goto out_resource; | |
2243 | WRITE32(1); | |
2244 | } | |
2245 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
2246 | if ((buflen -= 4) < 0) | |
2247 | goto out_resource; | |
2248 | WRITE32(1); | |
2249 | } | |
2250 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
2251 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; | |
2252 | if (buflen < 0) | |
2253 | goto out_resource; | |
2254 | WRITE32(fhp->fh_handle.fh_size); | |
2255 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); | |
2256 | } | |
2257 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
2258 | if ((buflen -= 8) < 0) | |
2259 | goto out_resource; | |
40ee5dc6 | 2260 | WRITE64(stat.ino); |
1da177e4 LT |
2261 | } |
2262 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
2263 | if ((buflen -= 8) < 0) | |
2264 | goto out_resource; | |
2265 | WRITE64((u64) statfs.f_ffree); | |
2266 | } | |
2267 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
2268 | if ((buflen -= 8) < 0) | |
2269 | goto out_resource; | |
2270 | WRITE64((u64) statfs.f_ffree); | |
2271 | } | |
2272 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
2273 | if ((buflen -= 8) < 0) | |
2274 | goto out_resource; | |
2275 | WRITE64((u64) statfs.f_files); | |
2276 | } | |
81c3f413 BF |
2277 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
2278 | status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); | |
2279 | if (status == nfserr_resource) | |
2280 | goto out_resource; | |
2281 | if (status) | |
2282 | goto out; | |
2283 | } | |
1da177e4 LT |
2284 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
2285 | if ((buflen -= 4) < 0) | |
2286 | goto out_resource; | |
2287 | WRITE32(1); | |
2288 | } | |
2289 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
2290 | if ((buflen -= 8) < 0) | |
2291 | goto out_resource; | |
2292 | WRITE64(~(u64)0); | |
2293 | } | |
2294 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
2295 | if ((buflen -= 4) < 0) | |
2296 | goto out_resource; | |
2297 | WRITE32(255); | |
2298 | } | |
2299 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
2300 | if ((buflen -= 4) < 0) | |
2301 | goto out_resource; | |
a16e92ed | 2302 | WRITE32(statfs.f_namelen); |
1da177e4 LT |
2303 | } |
2304 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
2305 | if ((buflen -= 8) < 0) | |
2306 | goto out_resource; | |
7adae489 | 2307 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2308 | } |
2309 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
2310 | if ((buflen -= 8) < 0) | |
2311 | goto out_resource; | |
7adae489 | 2312 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2313 | } |
2314 | if (bmval1 & FATTR4_WORD1_MODE) { | |
2315 | if ((buflen -= 4) < 0) | |
2316 | goto out_resource; | |
2317 | WRITE32(stat.mode & S_IALLUGO); | |
2318 | } | |
2319 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
2320 | if ((buflen -= 4) < 0) | |
2321 | goto out_resource; | |
2322 | WRITE32(1); | |
2323 | } | |
2324 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
2325 | if ((buflen -= 4) < 0) | |
2326 | goto out_resource; | |
2327 | WRITE32(stat.nlink); | |
2328 | } | |
2329 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
2330 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); | |
2331 | if (status == nfserr_resource) | |
2332 | goto out_resource; | |
2333 | if (status) | |
2334 | goto out; | |
2335 | } | |
2336 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
2337 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); | |
2338 | if (status == nfserr_resource) | |
2339 | goto out_resource; | |
2340 | if (status) | |
2341 | goto out; | |
2342 | } | |
2343 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
2344 | if ((buflen -= 8) < 0) | |
2345 | goto out_resource; | |
2346 | WRITE32((u32) MAJOR(stat.rdev)); | |
2347 | WRITE32((u32) MINOR(stat.rdev)); | |
2348 | } | |
2349 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
2350 | if ((buflen -= 8) < 0) | |
2351 | goto out_resource; | |
2352 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
2353 | WRITE64(dummy64); | |
2354 | } | |
2355 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
2356 | if ((buflen -= 8) < 0) | |
2357 | goto out_resource; | |
2358 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
2359 | WRITE64(dummy64); | |
2360 | } | |
2361 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
2362 | if ((buflen -= 8) < 0) | |
2363 | goto out_resource; | |
2364 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
2365 | WRITE64(dummy64); | |
2366 | } | |
2367 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
2368 | if ((buflen -= 8) < 0) | |
2369 | goto out_resource; | |
2370 | dummy64 = (u64)stat.blocks << 9; | |
2371 | WRITE64(dummy64); | |
2372 | } | |
2373 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
2374 | if ((buflen -= 12) < 0) | |
2375 | goto out_resource; | |
2376 | WRITE32(0); | |
2377 | WRITE32(stat.atime.tv_sec); | |
2378 | WRITE32(stat.atime.tv_nsec); | |
2379 | } | |
2380 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
2381 | if ((buflen -= 12) < 0) | |
2382 | goto out_resource; | |
2383 | WRITE32(0); | |
2384 | WRITE32(1); | |
2385 | WRITE32(0); | |
2386 | } | |
2387 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
2388 | if ((buflen -= 12) < 0) | |
2389 | goto out_resource; | |
2390 | WRITE32(0); | |
2391 | WRITE32(stat.ctime.tv_sec); | |
2392 | WRITE32(stat.ctime.tv_nsec); | |
2393 | } | |
2394 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
2395 | if ((buflen -= 12) < 0) | |
2396 | goto out_resource; | |
2397 | WRITE32(0); | |
2398 | WRITE32(stat.mtime.tv_sec); | |
2399 | WRITE32(stat.mtime.tv_nsec); | |
2400 | } | |
2401 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
1da177e4 LT |
2402 | if ((buflen -= 8) < 0) |
2403 | goto out_resource; | |
406a7ea9 FF |
2404 | /* |
2405 | * Get parent's attributes if not ignoring crossmount | |
2406 | * and this is the root of a cross-mounted filesystem. | |
2407 | */ | |
2408 | if (ignore_crossmnt == 0 && | |
462d6057 AV |
2409 | dentry == exp->ex_path.mnt->mnt_root) { |
2410 | struct path path = exp->ex_path; | |
2411 | path_get(&path); | |
2412 | while (follow_up(&path)) { | |
2413 | if (path.dentry != path.mnt->mnt_root) | |
2414 | break; | |
2415 | } | |
2416 | err = vfs_getattr(path.mnt, path.dentry, &stat); | |
2417 | path_put(&path); | |
40ee5dc6 PS |
2418 | if (err) |
2419 | goto out_nfserr; | |
2420 | } | |
2421 | WRITE64(stat.ino); | |
1da177e4 | 2422 | } |
8c18f205 BH |
2423 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
2424 | WRITE32(3); | |
2425 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0); | |
2426 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1); | |
2427 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2); | |
2428 | } | |
7e705706 | 2429 | |
1da177e4 LT |
2430 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); |
2431 | *countp = p - buffer; | |
2432 | status = nfs_ok; | |
2433 | ||
2434 | out: | |
28e05dd8 | 2435 | kfree(acl); |
1da177e4 LT |
2436 | if (fhp == &tempfh) |
2437 | fh_put(&tempfh); | |
2438 | return status; | |
2439 | out_nfserr: | |
b8dd7b9a | 2440 | status = nfserrno(err); |
1da177e4 LT |
2441 | goto out; |
2442 | out_resource: | |
2443 | *countp = 0; | |
2444 | status = nfserr_resource; | |
2445 | goto out; | |
2446 | out_serverfault: | |
2447 | status = nfserr_serverfault; | |
2448 | goto out; | |
2449 | } | |
2450 | ||
c0ce6ec8 BF |
2451 | static inline int attributes_need_mount(u32 *bmval) |
2452 | { | |
2453 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2454 | return 1; | |
2455 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2456 | return 1; | |
2457 | return 0; | |
2458 | } | |
2459 | ||
b37ad28b | 2460 | static __be32 |
1da177e4 | 2461 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, |
2ebbc012 | 2462 | const char *name, int namlen, __be32 *p, int *buflen) |
1da177e4 LT |
2463 | { |
2464 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2465 | struct dentry *dentry; | |
b37ad28b | 2466 | __be32 nfserr; |
406a7ea9 | 2467 | int ignore_crossmnt = 0; |
1da177e4 LT |
2468 | |
2469 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
2470 | if (IS_ERR(dentry)) | |
2471 | return nfserrno(PTR_ERR(dentry)); | |
b2c0cea6 BF |
2472 | if (!dentry->d_inode) { |
2473 | /* | |
2474 | * nfsd_buffered_readdir drops the i_mutex between | |
2475 | * readdir and calling this callback, leaving a window | |
2476 | * where this directory entry could have gone away. | |
2477 | */ | |
2478 | dput(dentry); | |
2479 | return nfserr_noent; | |
2480 | } | |
1da177e4 LT |
2481 | |
2482 | exp_get(exp); | |
406a7ea9 FF |
2483 | /* |
2484 | * In the case of a mountpoint, the client may be asking for | |
2485 | * attributes that are only properties of the underlying filesystem | |
2486 | * as opposed to the cross-mounted file system. In such a case, | |
2487 | * we will not follow the cross mount and will fill the attribtutes | |
2488 | * directly from the mountpoint dentry. | |
2489 | */ | |
3227fa41 | 2490 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
2491 | int err; |
2492 | ||
3227fa41 BF |
2493 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
2494 | && !attributes_need_mount(cd->rd_bmval)) { | |
2495 | ignore_crossmnt = 1; | |
2496 | goto out_encode; | |
2497 | } | |
dcb488a3 AA |
2498 | /* |
2499 | * Why the heck aren't we just using nfsd_lookup?? | |
2500 | * Different "."/".." handling? Something else? | |
2501 | * At least, add a comment here to explain.... | |
2502 | */ | |
021d3a72 BF |
2503 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
2504 | if (err) { | |
2505 | nfserr = nfserrno(err); | |
1da177e4 LT |
2506 | goto out_put; |
2507 | } | |
dcb488a3 AA |
2508 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
2509 | if (nfserr) | |
2510 | goto out_put; | |
1da177e4 LT |
2511 | |
2512 | } | |
3227fa41 | 2513 | out_encode: |
1da177e4 | 2514 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, |
406a7ea9 | 2515 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
2516 | out_put: |
2517 | dput(dentry); | |
2518 | exp_put(exp); | |
2519 | return nfserr; | |
2520 | } | |
2521 | ||
2ebbc012 | 2522 | static __be32 * |
b37ad28b | 2523 | nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr) |
1da177e4 | 2524 | { |
2ebbc012 | 2525 | __be32 *attrlenp; |
1da177e4 LT |
2526 | |
2527 | if (buflen < 6) | |
2528 | return NULL; | |
2529 | *p++ = htonl(2); | |
2530 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
2531 | *p++ = htonl(0); /* bmval1 */ | |
2532 | ||
2533 | attrlenp = p++; | |
2534 | *p++ = nfserr; /* no htonl */ | |
2535 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
2536 | return p; | |
2537 | } | |
2538 | ||
2539 | static int | |
a0ad13ef N |
2540 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
2541 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 2542 | { |
a0ad13ef | 2543 | struct readdir_cd *ccd = ccdv; |
1da177e4 LT |
2544 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
2545 | int buflen; | |
2ebbc012 | 2546 | __be32 *p = cd->buffer; |
b2c0cea6 | 2547 | __be32 *cookiep; |
b37ad28b | 2548 | __be32 nfserr = nfserr_toosmall; |
1da177e4 LT |
2549 | |
2550 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
2551 | if (name && isdotent(name, namlen)) { | |
2552 | cd->common.err = nfs_ok; | |
2553 | return 0; | |
2554 | } | |
2555 | ||
2556 | if (cd->offset) | |
2557 | xdr_encode_hyper(cd->offset, (u64) offset); | |
2558 | ||
2559 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); | |
2560 | if (buflen < 0) | |
2561 | goto fail; | |
2562 | ||
2563 | *p++ = xdr_one; /* mark entry present */ | |
b2c0cea6 | 2564 | cookiep = p; |
1da177e4 LT |
2565 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
2566 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
2567 | ||
2568 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen); | |
2569 | switch (nfserr) { | |
2570 | case nfs_ok: | |
2571 | p += buflen; | |
2572 | break; | |
2573 | case nfserr_resource: | |
2574 | nfserr = nfserr_toosmall; | |
2575 | goto fail; | |
b2c0cea6 BF |
2576 | case nfserr_noent: |
2577 | goto skip_entry; | |
1da177e4 LT |
2578 | default: |
2579 | /* | |
2580 | * If the client requested the RDATTR_ERROR attribute, | |
2581 | * we stuff the error code into this attribute | |
2582 | * and continue. If this attribute was not requested, | |
2583 | * then in accordance with the spec, we fail the | |
2584 | * entire READDIR operation(!) | |
2585 | */ | |
2586 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
2587 | goto fail; | |
1da177e4 | 2588 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
34081efc FI |
2589 | if (p == NULL) { |
2590 | nfserr = nfserr_toosmall; | |
1da177e4 | 2591 | goto fail; |
34081efc | 2592 | } |
1da177e4 LT |
2593 | } |
2594 | cd->buflen -= (p - cd->buffer); | |
2595 | cd->buffer = p; | |
b2c0cea6 BF |
2596 | cd->offset = cookiep; |
2597 | skip_entry: | |
1da177e4 LT |
2598 | cd->common.err = nfs_ok; |
2599 | return 0; | |
2600 | fail: | |
2601 | cd->common.err = nfserr; | |
2602 | return -EINVAL; | |
2603 | } | |
2604 | ||
e2f282b9 BH |
2605 | static void |
2606 | nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid) | |
2607 | { | |
bc749ca4 | 2608 | __be32 *p; |
e2f282b9 BH |
2609 | |
2610 | RESERVE_SPACE(sizeof(stateid_t)); | |
2611 | WRITE32(sid->si_generation); | |
2612 | WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
2613 | ADJUST_ARGS(); | |
2614 | } | |
2615 | ||
695e12f8 | 2616 | static __be32 |
b37ad28b | 2617 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 2618 | { |
bc749ca4 | 2619 | __be32 *p; |
1da177e4 LT |
2620 | |
2621 | if (!nfserr) { | |
2622 | RESERVE_SPACE(8); | |
2623 | WRITE32(access->ac_supported); | |
2624 | WRITE32(access->ac_resp_access); | |
2625 | ADJUST_ARGS(); | |
2626 | } | |
695e12f8 | 2627 | return nfserr; |
1da177e4 LT |
2628 | } |
2629 | ||
1d1bc8f2 BF |
2630 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
2631 | { | |
2632 | __be32 *p; | |
2633 | ||
2634 | if (!nfserr) { | |
2635 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 8); | |
2636 | WRITEMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
2637 | WRITE32(bcts->dir); | |
2638 | /* XXX: ? */ | |
2639 | WRITE32(0); | |
2640 | ADJUST_ARGS(); | |
2641 | } | |
2642 | return nfserr; | |
2643 | } | |
2644 | ||
695e12f8 | 2645 | static __be32 |
b37ad28b | 2646 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 LT |
2647 | { |
2648 | ENCODE_SEQID_OP_HEAD; | |
2649 | ||
e2f282b9 BH |
2650 | if (!nfserr) |
2651 | nfsd4_encode_stateid(resp, &close->cl_stateid); | |
2652 | ||
f3e42237 | 2653 | encode_seqid_op_tail(resp, save, nfserr); |
695e12f8 | 2654 | return nfserr; |
1da177e4 LT |
2655 | } |
2656 | ||
2657 | ||
695e12f8 | 2658 | static __be32 |
b37ad28b | 2659 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 2660 | { |
bc749ca4 | 2661 | __be32 *p; |
1da177e4 LT |
2662 | |
2663 | if (!nfserr) { | |
2664 | RESERVE_SPACE(8); | |
2665 | WRITEMEM(commit->co_verf.data, 8); | |
2666 | ADJUST_ARGS(); | |
2667 | } | |
695e12f8 | 2668 | return nfserr; |
1da177e4 LT |
2669 | } |
2670 | ||
695e12f8 | 2671 | static __be32 |
b37ad28b | 2672 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 2673 | { |
bc749ca4 | 2674 | __be32 *p; |
1da177e4 LT |
2675 | |
2676 | if (!nfserr) { | |
2677 | RESERVE_SPACE(32); | |
c654b8a9 | 2678 | write_cinfo(&p, &create->cr_cinfo); |
1da177e4 LT |
2679 | WRITE32(2); |
2680 | WRITE32(create->cr_bmval[0]); | |
2681 | WRITE32(create->cr_bmval[1]); | |
2682 | ADJUST_ARGS(); | |
2683 | } | |
695e12f8 | 2684 | return nfserr; |
1da177e4 LT |
2685 | } |
2686 | ||
b37ad28b AV |
2687 | static __be32 |
2688 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
2689 | { |
2690 | struct svc_fh *fhp = getattr->ga_fhp; | |
2691 | int buflen; | |
2692 | ||
2693 | if (nfserr) | |
2694 | return nfserr; | |
2695 | ||
2696 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); | |
2697 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, | |
2698 | resp->p, &buflen, getattr->ga_bmval, | |
406a7ea9 | 2699 | resp->rqstp, 0); |
1da177e4 LT |
2700 | if (!nfserr) |
2701 | resp->p += buflen; | |
2702 | return nfserr; | |
2703 | } | |
2704 | ||
695e12f8 BH |
2705 | static __be32 |
2706 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 2707 | { |
695e12f8 | 2708 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 2709 | unsigned int len; |
bc749ca4 | 2710 | __be32 *p; |
1da177e4 LT |
2711 | |
2712 | if (!nfserr) { | |
2713 | len = fhp->fh_handle.fh_size; | |
2714 | RESERVE_SPACE(len + 4); | |
2715 | WRITE32(len); | |
2716 | WRITEMEM(&fhp->fh_handle.fh_base, len); | |
2717 | ADJUST_ARGS(); | |
2718 | } | |
695e12f8 | 2719 | return nfserr; |
1da177e4 LT |
2720 | } |
2721 | ||
2722 | /* | |
2723 | * Including all fields other than the name, a LOCK4denied structure requires | |
2724 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
2725 | */ | |
2726 | static void | |
2727 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) | |
2728 | { | |
7c13f344 | 2729 | struct xdr_netobj *conf = &ld->ld_owner; |
bc749ca4 | 2730 | __be32 *p; |
1da177e4 | 2731 | |
7c13f344 | 2732 | RESERVE_SPACE(32 + XDR_LEN(conf->len)); |
1da177e4 LT |
2733 | WRITE64(ld->ld_start); |
2734 | WRITE64(ld->ld_length); | |
2735 | WRITE32(ld->ld_type); | |
7c13f344 | 2736 | if (conf->len) { |
1da177e4 | 2737 | WRITEMEM(&ld->ld_clientid, 8); |
7c13f344 BF |
2738 | WRITE32(conf->len); |
2739 | WRITEMEM(conf->data, conf->len); | |
2740 | kfree(conf->data); | |
1da177e4 LT |
2741 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
2742 | WRITE64((u64)0); /* clientid */ | |
2743 | WRITE32(0); /* length of owner name */ | |
2744 | } | |
2745 | ADJUST_ARGS(); | |
2746 | } | |
2747 | ||
695e12f8 | 2748 | static __be32 |
b37ad28b | 2749 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 2750 | { |
1da177e4 LT |
2751 | ENCODE_SEQID_OP_HEAD; |
2752 | ||
e2f282b9 BH |
2753 | if (!nfserr) |
2754 | nfsd4_encode_stateid(resp, &lock->lk_resp_stateid); | |
2755 | else if (nfserr == nfserr_denied) | |
1da177e4 LT |
2756 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); |
2757 | ||
f3e42237 | 2758 | encode_seqid_op_tail(resp, save, nfserr); |
695e12f8 | 2759 | return nfserr; |
1da177e4 LT |
2760 | } |
2761 | ||
695e12f8 | 2762 | static __be32 |
b37ad28b | 2763 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 LT |
2764 | { |
2765 | if (nfserr == nfserr_denied) | |
2766 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); | |
695e12f8 | 2767 | return nfserr; |
1da177e4 LT |
2768 | } |
2769 | ||
695e12f8 | 2770 | static __be32 |
b37ad28b | 2771 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 LT |
2772 | { |
2773 | ENCODE_SEQID_OP_HEAD; | |
2774 | ||
e2f282b9 BH |
2775 | if (!nfserr) |
2776 | nfsd4_encode_stateid(resp, &locku->lu_stateid); | |
2777 | ||
f3e42237 | 2778 | encode_seqid_op_tail(resp, save, nfserr); |
695e12f8 | 2779 | return nfserr; |
1da177e4 LT |
2780 | } |
2781 | ||
2782 | ||
695e12f8 | 2783 | static __be32 |
b37ad28b | 2784 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 2785 | { |
bc749ca4 | 2786 | __be32 *p; |
1da177e4 LT |
2787 | |
2788 | if (!nfserr) { | |
2789 | RESERVE_SPACE(20); | |
c654b8a9 | 2790 | write_cinfo(&p, &link->li_cinfo); |
1da177e4 LT |
2791 | ADJUST_ARGS(); |
2792 | } | |
695e12f8 | 2793 | return nfserr; |
1da177e4 LT |
2794 | } |
2795 | ||
2796 | ||
695e12f8 | 2797 | static __be32 |
b37ad28b | 2798 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 2799 | { |
bc749ca4 | 2800 | __be32 *p; |
1da177e4 LT |
2801 | ENCODE_SEQID_OP_HEAD; |
2802 | ||
2803 | if (nfserr) | |
2804 | goto out; | |
2805 | ||
e2f282b9 BH |
2806 | nfsd4_encode_stateid(resp, &open->op_stateid); |
2807 | RESERVE_SPACE(40); | |
c654b8a9 | 2808 | write_cinfo(&p, &open->op_cinfo); |
1da177e4 LT |
2809 | WRITE32(open->op_rflags); |
2810 | WRITE32(2); | |
2811 | WRITE32(open->op_bmval[0]); | |
2812 | WRITE32(open->op_bmval[1]); | |
2813 | WRITE32(open->op_delegate_type); | |
2814 | ADJUST_ARGS(); | |
2815 | ||
2816 | switch (open->op_delegate_type) { | |
2817 | case NFS4_OPEN_DELEGATE_NONE: | |
2818 | break; | |
2819 | case NFS4_OPEN_DELEGATE_READ: | |
e2f282b9 BH |
2820 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2821 | RESERVE_SPACE(20); | |
7b190fec | 2822 | WRITE32(open->op_recall); |
1da177e4 LT |
2823 | |
2824 | /* | |
2825 | * TODO: ACE's in delegations | |
2826 | */ | |
2827 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2828 | WRITE32(0); | |
2829 | WRITE32(0); | |
2830 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2831 | ADJUST_ARGS(); | |
2832 | break; | |
2833 | case NFS4_OPEN_DELEGATE_WRITE: | |
e2f282b9 BH |
2834 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2835 | RESERVE_SPACE(32); | |
1da177e4 LT |
2836 | WRITE32(0); |
2837 | ||
2838 | /* | |
2839 | * TODO: space_limit's in delegations | |
2840 | */ | |
2841 | WRITE32(NFS4_LIMIT_SIZE); | |
2842 | WRITE32(~(u32)0); | |
2843 | WRITE32(~(u32)0); | |
2844 | ||
2845 | /* | |
2846 | * TODO: ACE's in delegations | |
2847 | */ | |
2848 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2849 | WRITE32(0); | |
2850 | WRITE32(0); | |
2851 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2852 | ADJUST_ARGS(); | |
2853 | break; | |
2854 | default: | |
2855 | BUG(); | |
2856 | } | |
2857 | /* XXX save filehandle here */ | |
2858 | out: | |
f3e42237 | 2859 | encode_seqid_op_tail(resp, save, nfserr); |
695e12f8 | 2860 | return nfserr; |
1da177e4 LT |
2861 | } |
2862 | ||
695e12f8 | 2863 | static __be32 |
b37ad28b | 2864 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 LT |
2865 | { |
2866 | ENCODE_SEQID_OP_HEAD; | |
e2f282b9 BH |
2867 | |
2868 | if (!nfserr) | |
2869 | nfsd4_encode_stateid(resp, &oc->oc_resp_stateid); | |
1da177e4 | 2870 | |
f3e42237 | 2871 | encode_seqid_op_tail(resp, save, nfserr); |
695e12f8 | 2872 | return nfserr; |
1da177e4 LT |
2873 | } |
2874 | ||
695e12f8 | 2875 | static __be32 |
b37ad28b | 2876 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 LT |
2877 | { |
2878 | ENCODE_SEQID_OP_HEAD; | |
e2f282b9 BH |
2879 | |
2880 | if (!nfserr) | |
2881 | nfsd4_encode_stateid(resp, &od->od_stateid); | |
1da177e4 | 2882 | |
f3e42237 | 2883 | encode_seqid_op_tail(resp, save, nfserr); |
695e12f8 | 2884 | return nfserr; |
1da177e4 LT |
2885 | } |
2886 | ||
b37ad28b AV |
2887 | static __be32 |
2888 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
44524359 | 2889 | struct nfsd4_read *read) |
1da177e4 LT |
2890 | { |
2891 | u32 eof; | |
2892 | int v, pn; | |
2893 | unsigned long maxcount; | |
2894 | long len; | |
bc749ca4 | 2895 | __be32 *p; |
1da177e4 LT |
2896 | |
2897 | if (nfserr) | |
2898 | return nfserr; | |
2899 | if (resp->xbuf->page_len) | |
2900 | return nfserr_resource; | |
2901 | ||
2902 | RESERVE_SPACE(8); /* eof flag and byte count */ | |
2903 | ||
7adae489 | 2904 | maxcount = svc_max_payload(resp->rqstp); |
1da177e4 LT |
2905 | if (maxcount > read->rd_length) |
2906 | maxcount = read->rd_length; | |
2907 | ||
2908 | len = maxcount; | |
2909 | v = 0; | |
2910 | while (len > 0) { | |
44524359 | 2911 | pn = resp->rqstp->rq_resused++; |
3cc03b16 | 2912 | resp->rqstp->rq_vec[v].iov_base = |
44524359 | 2913 | page_address(resp->rqstp->rq_respages[pn]); |
3cc03b16 | 2914 | resp->rqstp->rq_vec[v].iov_len = |
44524359 | 2915 | len < PAGE_SIZE ? len : PAGE_SIZE; |
1da177e4 LT |
2916 | v++; |
2917 | len -= PAGE_SIZE; | |
2918 | } | |
2919 | read->rd_vlen = v; | |
2920 | ||
039a87ca | 2921 | nfserr = nfsd_read_file(read->rd_rqstp, read->rd_fhp, read->rd_filp, |
3cc03b16 | 2922 | read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, |
1da177e4 LT |
2923 | &maxcount); |
2924 | ||
1da177e4 LT |
2925 | if (nfserr) |
2926 | return nfserr; | |
44524359 N |
2927 | eof = (read->rd_offset + maxcount >= |
2928 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 LT |
2929 | |
2930 | WRITE32(eof); | |
2931 | WRITE32(maxcount); | |
2932 | ADJUST_ARGS(); | |
6ed6decc N |
2933 | resp->xbuf->head[0].iov_len = (char*)p |
2934 | - (char*)resp->xbuf->head[0].iov_base; | |
1da177e4 LT |
2935 | resp->xbuf->page_len = maxcount; |
2936 | ||
6ed6decc | 2937 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2938 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2939 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2940 | if (maxcount&3) { |
6ed6decc N |
2941 | RESERVE_SPACE(4); |
2942 | WRITE32(0); | |
1da177e4 LT |
2943 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2944 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2945 | ADJUST_ARGS(); |
1da177e4 LT |
2946 | } |
2947 | return 0; | |
2948 | } | |
2949 | ||
b37ad28b AV |
2950 | static __be32 |
2951 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
2952 | { |
2953 | int maxcount; | |
2954 | char *page; | |
bc749ca4 | 2955 | __be32 *p; |
1da177e4 LT |
2956 | |
2957 | if (nfserr) | |
2958 | return nfserr; | |
2959 | if (resp->xbuf->page_len) | |
2960 | return nfserr_resource; | |
2961 | ||
44524359 | 2962 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
1da177e4 LT |
2963 | |
2964 | maxcount = PAGE_SIZE; | |
2965 | RESERVE_SPACE(4); | |
2966 | ||
2967 | /* | |
2968 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
2969 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
2970 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
2971 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
2972 | */ | |
2973 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); | |
2974 | if (nfserr == nfserr_isdir) | |
2975 | return nfserr_inval; | |
2976 | if (nfserr) | |
2977 | return nfserr; | |
2978 | ||
2979 | WRITE32(maxcount); | |
2980 | ADJUST_ARGS(); | |
6ed6decc N |
2981 | resp->xbuf->head[0].iov_len = (char*)p |
2982 | - (char*)resp->xbuf->head[0].iov_base; | |
2983 | resp->xbuf->page_len = maxcount; | |
1da177e4 | 2984 | |
6ed6decc | 2985 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2986 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2987 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2988 | if (maxcount&3) { |
6ed6decc N |
2989 | RESERVE_SPACE(4); |
2990 | WRITE32(0); | |
1da177e4 LT |
2991 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2992 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2993 | ADJUST_ARGS(); |
1da177e4 LT |
2994 | } |
2995 | return 0; | |
2996 | } | |
2997 | ||
b37ad28b AV |
2998 | static __be32 |
2999 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
3000 | { |
3001 | int maxcount; | |
3002 | loff_t offset; | |
2ebbc012 | 3003 | __be32 *page, *savep, *tailbase; |
bc749ca4 | 3004 | __be32 *p; |
1da177e4 LT |
3005 | |
3006 | if (nfserr) | |
3007 | return nfserr; | |
3008 | if (resp->xbuf->page_len) | |
3009 | return nfserr_resource; | |
3010 | ||
3011 | RESERVE_SPACE(8); /* verifier */ | |
3012 | savep = p; | |
3013 | ||
3014 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
3015 | WRITE32(0); | |
3016 | WRITE32(0); | |
3017 | ADJUST_ARGS(); | |
3018 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; | |
bb6e8a9f | 3019 | tailbase = p; |
1da177e4 LT |
3020 | |
3021 | maxcount = PAGE_SIZE; | |
3022 | if (maxcount > readdir->rd_maxcount) | |
3023 | maxcount = readdir->rd_maxcount; | |
3024 | ||
3025 | /* | |
3026 | * Convert from bytes to words, account for the two words already | |
3027 | * written, make sure to leave two words at the end for the next | |
3028 | * pointer and eof field. | |
3029 | */ | |
3030 | maxcount = (maxcount >> 2) - 4; | |
3031 | if (maxcount < 0) { | |
3032 | nfserr = nfserr_toosmall; | |
3033 | goto err_no_verf; | |
3034 | } | |
3035 | ||
44524359 | 3036 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
1da177e4 LT |
3037 | readdir->common.err = 0; |
3038 | readdir->buflen = maxcount; | |
3039 | readdir->buffer = page; | |
3040 | readdir->offset = NULL; | |
3041 | ||
3042 | offset = readdir->rd_cookie; | |
3043 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
3044 | &offset, | |
3045 | &readdir->common, nfsd4_encode_dirent); | |
3046 | if (nfserr == nfs_ok && | |
3047 | readdir->common.err == nfserr_toosmall && | |
3048 | readdir->buffer == page) | |
3049 | nfserr = nfserr_toosmall; | |
1da177e4 LT |
3050 | if (nfserr) |
3051 | goto err_no_verf; | |
3052 | ||
3053 | if (readdir->offset) | |
3054 | xdr_encode_hyper(readdir->offset, offset); | |
3055 | ||
3056 | p = readdir->buffer; | |
3057 | *p++ = 0; /* no more entries */ | |
3058 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
44524359 N |
3059 | resp->xbuf->page_len = ((char*)p) - (char*)page_address( |
3060 | resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); | |
1da177e4 | 3061 | |
bb6e8a9f | 3062 | /* Use rest of head for padding and remaining ops: */ |
bb6e8a9f | 3063 | resp->xbuf->tail[0].iov_base = tailbase; |
1da177e4 LT |
3064 | resp->xbuf->tail[0].iov_len = 0; |
3065 | resp->p = resp->xbuf->tail[0].iov_base; | |
bb6e8a9f | 3066 | resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; |
1da177e4 LT |
3067 | |
3068 | return 0; | |
3069 | err_no_verf: | |
3070 | p = savep; | |
3071 | ADJUST_ARGS(); | |
3072 | return nfserr; | |
3073 | } | |
3074 | ||
695e12f8 | 3075 | static __be32 |
b37ad28b | 3076 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 3077 | { |
bc749ca4 | 3078 | __be32 *p; |
1da177e4 LT |
3079 | |
3080 | if (!nfserr) { | |
3081 | RESERVE_SPACE(20); | |
c654b8a9 | 3082 | write_cinfo(&p, &remove->rm_cinfo); |
1da177e4 LT |
3083 | ADJUST_ARGS(); |
3084 | } | |
695e12f8 | 3085 | return nfserr; |
1da177e4 LT |
3086 | } |
3087 | ||
695e12f8 | 3088 | static __be32 |
b37ad28b | 3089 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 3090 | { |
bc749ca4 | 3091 | __be32 *p; |
1da177e4 LT |
3092 | |
3093 | if (!nfserr) { | |
3094 | RESERVE_SPACE(40); | |
c654b8a9 BF |
3095 | write_cinfo(&p, &rename->rn_sinfo); |
3096 | write_cinfo(&p, &rename->rn_tinfo); | |
1da177e4 LT |
3097 | ADJUST_ARGS(); |
3098 | } | |
695e12f8 | 3099 | return nfserr; |
1da177e4 LT |
3100 | } |
3101 | ||
695e12f8 | 3102 | static __be32 |
22b6dee8 MJ |
3103 | nfsd4_do_encode_secinfo(struct nfsd4_compoundres *resp, |
3104 | __be32 nfserr,struct svc_export *exp) | |
dcb488a3 AA |
3105 | { |
3106 | int i = 0; | |
4796f457 BF |
3107 | u32 nflavs; |
3108 | struct exp_flavor_info *flavs; | |
3109 | struct exp_flavor_info def_flavs[2]; | |
bc749ca4 | 3110 | __be32 *p; |
dcb488a3 AA |
3111 | |
3112 | if (nfserr) | |
3113 | goto out; | |
4796f457 BF |
3114 | if (exp->ex_nflavors) { |
3115 | flavs = exp->ex_flavors; | |
3116 | nflavs = exp->ex_nflavors; | |
3117 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
3118 | flavs = def_flavs; | |
3119 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
3120 | nflavs = 2; | |
3121 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
3122 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
3123 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
3124 | nflavs = 1; | |
3125 | flavs[0].pseudoflavor | |
3126 | = svcauth_gss_flavor(exp->ex_client); | |
3127 | } else { | |
3128 | nflavs = 1; | |
3129 | flavs[0].pseudoflavor | |
3130 | = exp->ex_client->flavour->flavour; | |
3131 | } | |
3132 | } | |
3133 | ||
dcb488a3 | 3134 | RESERVE_SPACE(4); |
4796f457 | 3135 | WRITE32(nflavs); |
dcb488a3 | 3136 | ADJUST_ARGS(); |
4796f457 BF |
3137 | for (i = 0; i < nflavs; i++) { |
3138 | u32 flav = flavs[i].pseudoflavor; | |
dcb488a3 AA |
3139 | struct gss_api_mech *gm = gss_mech_get_by_pseudoflavor(flav); |
3140 | ||
3141 | if (gm) { | |
3142 | RESERVE_SPACE(4); | |
3143 | WRITE32(RPC_AUTH_GSS); | |
3144 | ADJUST_ARGS(); | |
3145 | RESERVE_SPACE(4 + gm->gm_oid.len); | |
3146 | WRITE32(gm->gm_oid.len); | |
3147 | WRITEMEM(gm->gm_oid.data, gm->gm_oid.len); | |
3148 | ADJUST_ARGS(); | |
3149 | RESERVE_SPACE(4); | |
3150 | WRITE32(0); /* qop */ | |
3151 | ADJUST_ARGS(); | |
3152 | RESERVE_SPACE(4); | |
3153 | WRITE32(gss_pseudoflavor_to_service(gm, flav)); | |
3154 | ADJUST_ARGS(); | |
3155 | gss_mech_put(gm); | |
3156 | } else { | |
3157 | RESERVE_SPACE(4); | |
3158 | WRITE32(flav); | |
3159 | ADJUST_ARGS(); | |
3160 | } | |
3161 | } | |
3162 | out: | |
3163 | if (exp) | |
3164 | exp_put(exp); | |
695e12f8 | 3165 | return nfserr; |
dcb488a3 AA |
3166 | } |
3167 | ||
22b6dee8 MJ |
3168 | static __be32 |
3169 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3170 | struct nfsd4_secinfo *secinfo) | |
3171 | { | |
3172 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->si_exp); | |
3173 | } | |
3174 | ||
3175 | static __be32 | |
3176 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3177 | struct nfsd4_secinfo_no_name *secinfo) | |
3178 | { | |
3179 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->sin_exp); | |
3180 | } | |
3181 | ||
1da177e4 LT |
3182 | /* |
3183 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
3184 | * regardless of the error status. | |
3185 | */ | |
695e12f8 | 3186 | static __be32 |
b37ad28b | 3187 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 3188 | { |
bc749ca4 | 3189 | __be32 *p; |
1da177e4 LT |
3190 | |
3191 | RESERVE_SPACE(12); | |
3192 | if (nfserr) { | |
3193 | WRITE32(2); | |
3194 | WRITE32(0); | |
3195 | WRITE32(0); | |
3196 | } | |
3197 | else { | |
3198 | WRITE32(2); | |
3199 | WRITE32(setattr->sa_bmval[0]); | |
3200 | WRITE32(setattr->sa_bmval[1]); | |
3201 | } | |
3202 | ADJUST_ARGS(); | |
695e12f8 | 3203 | return nfserr; |
1da177e4 LT |
3204 | } |
3205 | ||
695e12f8 | 3206 | static __be32 |
b37ad28b | 3207 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 3208 | { |
bc749ca4 | 3209 | __be32 *p; |
1da177e4 LT |
3210 | |
3211 | if (!nfserr) { | |
3212 | RESERVE_SPACE(8 + sizeof(nfs4_verifier)); | |
3213 | WRITEMEM(&scd->se_clientid, 8); | |
3214 | WRITEMEM(&scd->se_confirm, sizeof(nfs4_verifier)); | |
3215 | ADJUST_ARGS(); | |
3216 | } | |
3217 | else if (nfserr == nfserr_clid_inuse) { | |
3218 | RESERVE_SPACE(8); | |
3219 | WRITE32(0); | |
3220 | WRITE32(0); | |
3221 | ADJUST_ARGS(); | |
3222 | } | |
695e12f8 | 3223 | return nfserr; |
1da177e4 LT |
3224 | } |
3225 | ||
695e12f8 | 3226 | static __be32 |
b37ad28b | 3227 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 3228 | { |
bc749ca4 | 3229 | __be32 *p; |
1da177e4 LT |
3230 | |
3231 | if (!nfserr) { | |
3232 | RESERVE_SPACE(16); | |
3233 | WRITE32(write->wr_bytes_written); | |
3234 | WRITE32(write->wr_how_written); | |
3235 | WRITEMEM(write->wr_verifier.data, 8); | |
3236 | ADJUST_ARGS(); | |
3237 | } | |
695e12f8 | 3238 | return nfserr; |
1da177e4 LT |
3239 | } |
3240 | ||
2db134eb AA |
3241 | static __be32 |
3242 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, int nfserr, | |
3243 | struct nfsd4_exchange_id *exid) | |
3244 | { | |
bc749ca4 | 3245 | __be32 *p; |
0733d213 AA |
3246 | char *major_id; |
3247 | char *server_scope; | |
3248 | int major_id_sz; | |
3249 | int server_scope_sz; | |
3250 | uint64_t minor_id = 0; | |
3251 | ||
3252 | if (nfserr) | |
3253 | return nfserr; | |
3254 | ||
3255 | major_id = utsname()->nodename; | |
3256 | major_id_sz = strlen(major_id); | |
3257 | server_scope = utsname()->nodename; | |
3258 | server_scope_sz = strlen(server_scope); | |
3259 | ||
3260 | RESERVE_SPACE( | |
3261 | 8 /* eir_clientid */ + | |
3262 | 4 /* eir_sequenceid */ + | |
3263 | 4 /* eir_flags */ + | |
3264 | 4 /* spr_how (SP4_NONE) */ + | |
3265 | 8 /* so_minor_id */ + | |
3266 | 4 /* so_major_id.len */ + | |
3267 | (XDR_QUADLEN(major_id_sz) * 4) + | |
3268 | 4 /* eir_server_scope.len */ + | |
3269 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
3270 | 4 /* eir_server_impl_id.count (0) */); | |
3271 | ||
3272 | WRITEMEM(&exid->clientid, 8); | |
3273 | WRITE32(exid->seqid); | |
3274 | WRITE32(exid->flags); | |
3275 | ||
3276 | /* state_protect4_r. Currently only support SP4_NONE */ | |
3277 | BUG_ON(exid->spa_how != SP4_NONE); | |
3278 | WRITE32(exid->spa_how); | |
3279 | ||
3280 | /* The server_owner struct */ | |
3281 | WRITE64(minor_id); /* Minor id */ | |
3282 | /* major id */ | |
3283 | WRITE32(major_id_sz); | |
3284 | WRITEMEM(major_id, major_id_sz); | |
3285 | ||
3286 | /* Server scope */ | |
3287 | WRITE32(server_scope_sz); | |
3288 | WRITEMEM(server_scope, server_scope_sz); | |
3289 | ||
3290 | /* Implementation id */ | |
3291 | WRITE32(0); /* zero length nfs_impl_id4 array */ | |
3292 | ADJUST_ARGS(); | |
3293 | return 0; | |
2db134eb AA |
3294 | } |
3295 | ||
3296 | static __be32 | |
3297 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, int nfserr, | |
3298 | struct nfsd4_create_session *sess) | |
3299 | { | |
bc749ca4 | 3300 | __be32 *p; |
ec6b5d7b AA |
3301 | |
3302 | if (nfserr) | |
3303 | return nfserr; | |
3304 | ||
3305 | RESERVE_SPACE(24); | |
3306 | WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3307 | WRITE32(sess->seqid); | |
3308 | WRITE32(sess->flags); | |
3309 | ADJUST_ARGS(); | |
3310 | ||
3311 | RESERVE_SPACE(28); | |
3312 | WRITE32(0); /* headerpadsz */ | |
3313 | WRITE32(sess->fore_channel.maxreq_sz); | |
3314 | WRITE32(sess->fore_channel.maxresp_sz); | |
3315 | WRITE32(sess->fore_channel.maxresp_cached); | |
3316 | WRITE32(sess->fore_channel.maxops); | |
3317 | WRITE32(sess->fore_channel.maxreqs); | |
3318 | WRITE32(sess->fore_channel.nr_rdma_attrs); | |
3319 | ADJUST_ARGS(); | |
3320 | ||
3321 | if (sess->fore_channel.nr_rdma_attrs) { | |
3322 | RESERVE_SPACE(4); | |
3323 | WRITE32(sess->fore_channel.rdma_attrs); | |
3324 | ADJUST_ARGS(); | |
3325 | } | |
3326 | ||
3327 | RESERVE_SPACE(28); | |
3328 | WRITE32(0); /* headerpadsz */ | |
3329 | WRITE32(sess->back_channel.maxreq_sz); | |
3330 | WRITE32(sess->back_channel.maxresp_sz); | |
3331 | WRITE32(sess->back_channel.maxresp_cached); | |
3332 | WRITE32(sess->back_channel.maxops); | |
3333 | WRITE32(sess->back_channel.maxreqs); | |
3334 | WRITE32(sess->back_channel.nr_rdma_attrs); | |
3335 | ADJUST_ARGS(); | |
3336 | ||
3337 | if (sess->back_channel.nr_rdma_attrs) { | |
3338 | RESERVE_SPACE(4); | |
3339 | WRITE32(sess->back_channel.rdma_attrs); | |
3340 | ADJUST_ARGS(); | |
3341 | } | |
3342 | return 0; | |
2db134eb AA |
3343 | } |
3344 | ||
3345 | static __be32 | |
3346 | nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, int nfserr, | |
3347 | struct nfsd4_destroy_session *destroy_session) | |
3348 | { | |
2db134eb AA |
3349 | return nfserr; |
3350 | } | |
3351 | ||
e1ca12df BS |
3352 | static __be32 |
3353 | nfsd4_encode_free_stateid(struct nfsd4_compoundres *resp, int nfserr, | |
3354 | struct nfsd4_free_stateid *free_stateid) | |
3355 | { | |
3356 | __be32 *p; | |
3357 | ||
3358 | if (nfserr) | |
3359 | return nfserr; | |
3360 | ||
3361 | RESERVE_SPACE(4); | |
3362 | WRITE32(nfserr); | |
3363 | ADJUST_ARGS(); | |
3364 | return nfserr; | |
3365 | } | |
3366 | ||
c47d832b | 3367 | static __be32 |
2db134eb AA |
3368 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr, |
3369 | struct nfsd4_sequence *seq) | |
3370 | { | |
bc749ca4 | 3371 | __be32 *p; |
b85d4c01 BH |
3372 | |
3373 | if (nfserr) | |
3374 | return nfserr; | |
3375 | ||
3376 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20); | |
3377 | WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3378 | WRITE32(seq->seqid); | |
3379 | WRITE32(seq->slotid); | |
b7d7ca35 BF |
3380 | /* Note slotid's are numbered from zero: */ |
3381 | WRITE32(seq->maxslots - 1); /* sr_highest_slotid */ | |
3382 | WRITE32(seq->maxslots - 1); /* sr_target_highest_slotid */ | |
0d7bb719 | 3383 | WRITE32(seq->status_flags); |
b85d4c01 BH |
3384 | |
3385 | ADJUST_ARGS(); | |
557ce264 | 3386 | resp->cstate.datap = p; /* DRC cache data pointer */ |
b85d4c01 | 3387 | return 0; |
2db134eb AA |
3388 | } |
3389 | ||
17456804 BS |
3390 | __be32 |
3391 | nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, int nfserr, | |
3392 | struct nfsd4_test_stateid *test_stateid) | |
3393 | { | |
3394 | struct nfsd4_compoundargs *argp; | |
38c2f4b1 | 3395 | struct nfs4_client *cl = resp->cstate.session->se_client; |
17456804 BS |
3396 | stateid_t si; |
3397 | __be32 *p; | |
3398 | int i; | |
3399 | int valid; | |
3400 | ||
3401 | restore_buf(test_stateid->ts_saved_args, &test_stateid->ts_savedp); | |
3402 | argp = test_stateid->ts_saved_args; | |
3403 | ||
3404 | RESERVE_SPACE(4); | |
3405 | *p++ = htonl(test_stateid->ts_num_ids); | |
3406 | resp->p = p; | |
3407 | ||
3408 | nfs4_lock_state(); | |
3409 | for (i = 0; i < test_stateid->ts_num_ids; i++) { | |
3410 | nfsd4_decode_stateid(argp, &si); | |
38c2f4b1 | 3411 | valid = nfs4_validate_stateid(cl, &si); |
17456804 BS |
3412 | RESERVE_SPACE(4); |
3413 | *p++ = htonl(valid); | |
3414 | resp->p = p; | |
3415 | } | |
3416 | nfs4_unlock_state(); | |
3417 | ||
3418 | return nfserr; | |
3419 | } | |
3420 | ||
695e12f8 BH |
3421 | static __be32 |
3422 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
3423 | { | |
3424 | return nfserr; | |
3425 | } | |
3426 | ||
3427 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
3428 | ||
2db134eb AA |
3429 | /* |
3430 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
3431 | * since we don't need to filter out obsolete ops as this is | |
3432 | * done in the decoding phase. | |
3433 | */ | |
695e12f8 | 3434 | static nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
3435 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
3436 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
3437 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
3438 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
3439 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
3440 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
3441 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
3442 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
3443 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
3444 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
3445 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
3446 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
3447 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
3448 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
3449 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3450 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 3451 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
3452 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
3453 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
3454 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3455 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3456 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3457 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
3458 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
3459 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
3460 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
3461 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
3462 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
3463 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3464 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3465 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
3466 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
3467 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
3468 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
3469 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3470 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
3471 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3472 | |
3473 | /* NFSv4.1 operations */ | |
3474 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
1d1bc8f2 | 3475 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
2db134eb AA |
3476 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
3477 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
3478 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session, | |
e1ca12df | 3479 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_free_stateid, |
2db134eb AA |
3480 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3481 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, | |
3482 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
3483 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
3484 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
3485 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
22b6dee8 | 3486 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
2db134eb AA |
3487 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
3488 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
17456804 | 3489 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, |
2db134eb AA |
3490 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3491 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
3492 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
695e12f8 BH |
3493 | }; |
3494 | ||
496c262c AA |
3495 | /* |
3496 | * Calculate the total amount of memory that the compound response has taken | |
58e7b33a | 3497 | * after encoding the current operation with pad. |
496c262c | 3498 | * |
58e7b33a MJ |
3499 | * pad: if operation is non-idempotent, pad was calculate by op_rsize_bop() |
3500 | * which was specified at nfsd4_operation, else pad is zero. | |
496c262c | 3501 | * |
58e7b33a | 3502 | * Compare this length to the session se_fmaxresp_sz and se_fmaxresp_cached. |
496c262c AA |
3503 | * |
3504 | * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so | |
3505 | * will be at least a page and will therefore hold the xdr_buf head. | |
3506 | */ | |
58e7b33a | 3507 | int nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad) |
496c262c | 3508 | { |
496c262c | 3509 | struct xdr_buf *xb = &resp->rqstp->rq_res; |
496c262c AA |
3510 | struct nfsd4_session *session = NULL; |
3511 | struct nfsd4_slot *slot = resp->cstate.slot; | |
58e7b33a | 3512 | u32 length, tlen = 0; |
496c262c AA |
3513 | |
3514 | if (!nfsd4_has_session(&resp->cstate)) | |
58e7b33a | 3515 | return 0; |
496c262c AA |
3516 | |
3517 | session = resp->cstate.session; | |
58e7b33a MJ |
3518 | if (session == NULL) |
3519 | return 0; | |
496c262c AA |
3520 | |
3521 | if (xb->page_len == 0) { | |
3522 | length = (char *)resp->p - (char *)xb->head[0].iov_base + pad; | |
3523 | } else { | |
3524 | if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0) | |
3525 | tlen = (char *)resp->p - (char *)xb->tail[0].iov_base; | |
3526 | ||
3527 | length = xb->head[0].iov_len + xb->page_len + tlen + pad; | |
3528 | } | |
3529 | dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__, | |
3530 | length, xb->page_len, tlen, pad); | |
3531 | ||
58e7b33a MJ |
3532 | if (length > session->se_fchannel.maxresp_sz) |
3533 | return nfserr_rep_too_big; | |
3534 | ||
73e79482 | 3535 | if ((slot->sl_flags & NFSD4_SLOT_CACHETHIS) && |
58e7b33a | 3536 | length > session->se_fchannel.maxresp_cached) |
496c262c | 3537 | return nfserr_rep_too_big_to_cache; |
58e7b33a MJ |
3538 | |
3539 | return 0; | |
496c262c AA |
3540 | } |
3541 | ||
1da177e4 LT |
3542 | void |
3543 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3544 | { | |
2ebbc012 | 3545 | __be32 *statp; |
bc749ca4 | 3546 | __be32 *p; |
1da177e4 LT |
3547 | |
3548 | RESERVE_SPACE(8); | |
3549 | WRITE32(op->opnum); | |
3550 | statp = p++; /* to be backfilled at the end */ | |
3551 | ADJUST_ARGS(); | |
3552 | ||
695e12f8 BH |
3553 | if (op->opnum == OP_ILLEGAL) |
3554 | goto status; | |
3555 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || | |
3556 | !nfsd4_enc_ops[op->opnum]); | |
3557 | op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u); | |
496c262c | 3558 | /* nfsd4_check_drc_limit guarantees enough room for error status */ |
58e7b33a MJ |
3559 | if (!op->status) |
3560 | op->status = nfsd4_check_resp_size(resp, 0); | |
695e12f8 | 3561 | status: |
1da177e4 LT |
3562 | /* |
3563 | * Note: We write the status directly, instead of using WRITE32(), | |
3564 | * since it is already in network byte order. | |
3565 | */ | |
3566 | *statp = op->status; | |
3567 | } | |
3568 | ||
3569 | /* | |
3570 | * Encode the reply stored in the stateowner reply cache | |
3571 | * | |
3572 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
3573 | * previously sent already encoded operation. | |
3574 | * | |
3575 | * called with nfs4_lock_state() held | |
3576 | */ | |
3577 | void | |
3578 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3579 | { | |
bc749ca4 | 3580 | __be32 *p; |
1da177e4 LT |
3581 | struct nfs4_replay *rp = op->replay; |
3582 | ||
3583 | BUG_ON(!rp); | |
3584 | ||
3585 | RESERVE_SPACE(8); | |
3586 | WRITE32(op->opnum); | |
3587 | *p++ = rp->rp_status; /* already xdr'ed */ | |
3588 | ADJUST_ARGS(); | |
3589 | ||
3590 | RESERVE_SPACE(rp->rp_buflen); | |
3591 | WRITEMEM(rp->rp_buf, rp->rp_buflen); | |
3592 | ADJUST_ARGS(); | |
3593 | } | |
3594 | ||
1da177e4 | 3595 | int |
2ebbc012 | 3596 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
3597 | { |
3598 | return xdr_ressize_check(rqstp, p); | |
3599 | } | |
3600 | ||
3e98abff | 3601 | int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp) |
1da177e4 | 3602 | { |
3e98abff BF |
3603 | struct svc_rqst *rqstp = rq; |
3604 | struct nfsd4_compoundargs *args = rqstp->rq_argp; | |
3605 | ||
1da177e4 LT |
3606 | if (args->ops != args->iops) { |
3607 | kfree(args->ops); | |
3608 | args->ops = args->iops; | |
3609 | } | |
f99d49ad JJ |
3610 | kfree(args->tmpp); |
3611 | args->tmpp = NULL; | |
1da177e4 LT |
3612 | while (args->to_free) { |
3613 | struct tmpbuf *tb = args->to_free; | |
3614 | args->to_free = tb->next; | |
3615 | tb->release(tb->buf); | |
3616 | kfree(tb); | |
3617 | } | |
3e98abff | 3618 | return 1; |
1da177e4 LT |
3619 | } |
3620 | ||
3621 | int | |
2ebbc012 | 3622 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 3623 | { |
1da177e4 LT |
3624 | args->p = p; |
3625 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
3626 | args->pagelist = rqstp->rq_arg.pages; | |
3627 | args->pagelen = rqstp->rq_arg.page_len; | |
3628 | args->tmpp = NULL; | |
3629 | args->to_free = NULL; | |
3630 | args->ops = args->iops; | |
3631 | args->rqstp = rqstp; | |
3632 | ||
3e98abff | 3633 | return !nfsd4_decode_compound(args); |
1da177e4 LT |
3634 | } |
3635 | ||
3636 | int | |
2ebbc012 | 3637 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
3638 | { |
3639 | /* | |
3640 | * All that remains is to write the tag and operation count... | |
3641 | */ | |
557ce264 | 3642 | struct nfsd4_compound_state *cs = &resp->cstate; |
1da177e4 LT |
3643 | struct kvec *iov; |
3644 | p = resp->tagp; | |
3645 | *p++ = htonl(resp->taglen); | |
3646 | memcpy(p, resp->tag, resp->taglen); | |
3647 | p += XDR_QUADLEN(resp->taglen); | |
3648 | *p++ = htonl(resp->opcnt); | |
3649 | ||
3650 | if (rqstp->rq_res.page_len) | |
3651 | iov = &rqstp->rq_res.tail[0]; | |
3652 | else | |
3653 | iov = &rqstp->rq_res.head[0]; | |
3654 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; | |
3655 | BUG_ON(iov->iov_len > PAGE_SIZE); | |
26c0c75e BF |
3656 | if (nfsd4_has_session(cs)) { |
3657 | if (cs->status != nfserr_replay_cache) { | |
3658 | nfsd4_store_cache_entry(resp); | |
73e79482 | 3659 | cs->slot->sl_flags &= ~NFSD4_SLOT_INUSE; |
26c0c75e | 3660 | } |
d7682988 BH |
3661 | /* Renew the clientid on success and on replay */ |
3662 | release_session_client(cs->session); | |
76407f76 | 3663 | nfsd4_put_session(cs->session); |
da3846a2 | 3664 | } |
1da177e4 LT |
3665 | return 1; |
3666 | } | |
3667 | ||
3668 | /* | |
3669 | * Local variables: | |
3670 | * c-basic-offset: 8 | |
3671 | * End: | |
3672 | */ |