Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4xdr.c | |
3 | * | |
4 | * Server-side XDR for NFSv4 | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | * | |
37 | * TODO: Neil Brown made the following observation: We currently | |
38 | * initially reserve NFSD_BUFSIZE space on the transmit queue and | |
39 | * never release any of that until the request is complete. | |
40 | * It would be good to calculate a new maximum response size while | |
41 | * decoding the COMPOUND, and call svc_reserve with this number | |
42 | * at the end of nfs4svc_decode_compoundargs. | |
43 | */ | |
44 | ||
45 | #include <linux/param.h> | |
46 | #include <linux/smp.h> | |
47 | #include <linux/smp_lock.h> | |
48 | #include <linux/fs.h> | |
49 | #include <linux/namei.h> | |
50 | #include <linux/vfs.h> | |
51 | #include <linux/sunrpc/xdr.h> | |
52 | #include <linux/sunrpc/svc.h> | |
53 | #include <linux/sunrpc/clnt.h> | |
54 | #include <linux/nfsd/nfsd.h> | |
55 | #include <linux/nfsd/state.h> | |
56 | #include <linux/nfsd/xdr4.h> | |
57 | #include <linux/nfsd_idmap.h> | |
58 | #include <linux/nfs4.h> | |
59 | #include <linux/nfs4_acl.h> | |
60 | ||
61 | #define NFSDDBG_FACILITY NFSDDBG_XDR | |
62 | ||
63 | static int | |
64 | check_filename(char *str, int len, int err) | |
65 | { | |
66 | int i; | |
67 | ||
68 | if (len == 0) | |
69 | return nfserr_inval; | |
70 | if (isdotent(str, len)) | |
71 | return err; | |
72 | for (i = 0; i < len; i++) | |
73 | if (str[i] == '/') | |
74 | return err; | |
75 | return 0; | |
76 | } | |
77 | ||
78 | /* | |
79 | * START OF "GENERIC" DECODE ROUTINES. | |
80 | * These may look a little ugly since they are imported from a "generic" | |
81 | * set of XDR encode/decode routines which are intended to be shared by | |
82 | * all of our NFSv4 implementations (OpenBSD, MacOS X...). | |
83 | * | |
84 | * If the pain of reading these is too great, it should be a straightforward | |
85 | * task to translate them into Linux-specific versions which are more | |
86 | * consistent with the style used in NFSv2/v3... | |
87 | */ | |
88 | #define DECODE_HEAD \ | |
89 | u32 *p; \ | |
90 | int status | |
91 | #define DECODE_TAIL \ | |
92 | status = 0; \ | |
93 | out: \ | |
94 | return status; \ | |
95 | xdr_error: \ | |
96 | printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \ | |
97 | status = nfserr_bad_xdr; \ | |
98 | goto out | |
99 | ||
100 | #define READ32(x) (x) = ntohl(*p++) | |
101 | #define READ64(x) do { \ | |
102 | (x) = (u64)ntohl(*p++) << 32; \ | |
103 | (x) |= ntohl(*p++); \ | |
104 | } while (0) | |
105 | #define READTIME(x) do { \ | |
106 | p++; \ | |
107 | (x) = ntohl(*p++); \ | |
108 | p++; \ | |
109 | } while (0) | |
110 | #define READMEM(x,nbytes) do { \ | |
111 | x = (char *)p; \ | |
112 | p += XDR_QUADLEN(nbytes); \ | |
113 | } while (0) | |
114 | #define SAVEMEM(x,nbytes) do { \ | |
115 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
116 | savemem(argp, p, nbytes) : \ | |
117 | (char *)p)) { \ | |
118 | printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \ | |
119 | goto xdr_error; \ | |
120 | } \ | |
121 | p += XDR_QUADLEN(nbytes); \ | |
122 | } while (0) | |
123 | #define COPYMEM(x,nbytes) do { \ | |
124 | memcpy((x), p, nbytes); \ | |
125 | p += XDR_QUADLEN(nbytes); \ | |
126 | } while (0) | |
127 | ||
128 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ | |
129 | #define READ_BUF(nbytes) do { \ | |
130 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ | |
131 | p = argp->p; \ | |
132 | argp->p += XDR_QUADLEN(nbytes); \ | |
133 | } else if (!(p = read_buf(argp, nbytes))) { \ | |
134 | printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \ | |
135 | goto xdr_error; \ | |
136 | } \ | |
137 | } while (0) | |
138 | ||
fd39ca9a | 139 | static u32 *read_buf(struct nfsd4_compoundargs *argp, int nbytes) |
1da177e4 LT |
140 | { |
141 | /* We want more bytes than seem to be available. | |
142 | * Maybe we need a new page, maybe we have just run out | |
143 | */ | |
144 | int avail = (char*)argp->end - (char*)argp->p; | |
145 | u32 *p; | |
146 | if (avail + argp->pagelen < nbytes) | |
147 | return NULL; | |
148 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ | |
149 | return NULL; | |
150 | /* ok, we can do it with the current plus the next page */ | |
151 | if (nbytes <= sizeof(argp->tmp)) | |
152 | p = argp->tmp; | |
153 | else { | |
f99d49ad | 154 | kfree(argp->tmpp); |
1da177e4 LT |
155 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
156 | if (!p) | |
157 | return NULL; | |
158 | ||
159 | } | |
160 | memcpy(p, argp->p, avail); | |
161 | /* step to next page */ | |
162 | argp->p = page_address(argp->pagelist[0]); | |
163 | argp->pagelist++; | |
164 | if (argp->pagelen < PAGE_SIZE) { | |
165 | argp->end = p + (argp->pagelen>>2); | |
166 | argp->pagelen = 0; | |
167 | } else { | |
168 | argp->end = p + (PAGE_SIZE>>2); | |
169 | argp->pagelen -= PAGE_SIZE; | |
170 | } | |
171 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); | |
172 | argp->p += XDR_QUADLEN(nbytes - avail); | |
173 | return p; | |
174 | } | |
175 | ||
176 | static int | |
177 | defer_free(struct nfsd4_compoundargs *argp, | |
178 | void (*release)(const void *), void *p) | |
179 | { | |
180 | struct tmpbuf *tb; | |
181 | ||
182 | tb = kmalloc(sizeof(*tb), GFP_KERNEL); | |
183 | if (!tb) | |
184 | return -ENOMEM; | |
185 | tb->buf = p; | |
186 | tb->release = release; | |
187 | tb->next = argp->to_free; | |
188 | argp->to_free = tb; | |
189 | return 0; | |
190 | } | |
191 | ||
fd39ca9a | 192 | static char *savemem(struct nfsd4_compoundargs *argp, u32 *p, int nbytes) |
1da177e4 LT |
193 | { |
194 | void *new = NULL; | |
195 | if (p == argp->tmp) { | |
196 | new = kmalloc(nbytes, GFP_KERNEL); | |
197 | if (!new) return NULL; | |
198 | p = new; | |
199 | memcpy(p, argp->tmp, nbytes); | |
200 | } else { | |
201 | if (p != argp->tmpp) | |
202 | BUG(); | |
203 | argp->tmpp = NULL; | |
204 | } | |
205 | if (defer_free(argp, kfree, p)) { | |
206 | kfree(new); | |
207 | return NULL; | |
208 | } else | |
209 | return (char *)p; | |
210 | } | |
211 | ||
212 | ||
213 | static int | |
214 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) | |
215 | { | |
216 | u32 bmlen; | |
217 | DECODE_HEAD; | |
218 | ||
219 | bmval[0] = 0; | |
220 | bmval[1] = 0; | |
221 | ||
222 | READ_BUF(4); | |
223 | READ32(bmlen); | |
224 | if (bmlen > 1000) | |
225 | goto xdr_error; | |
226 | ||
227 | READ_BUF(bmlen << 2); | |
228 | if (bmlen > 0) | |
229 | READ32(bmval[0]); | |
230 | if (bmlen > 1) | |
231 | READ32(bmval[1]); | |
232 | ||
233 | DECODE_TAIL; | |
234 | } | |
235 | ||
236 | static int | |
237 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, struct iattr *iattr, | |
238 | struct nfs4_acl **acl) | |
239 | { | |
240 | int expected_len, len = 0; | |
241 | u32 dummy32; | |
242 | char *buf; | |
243 | ||
244 | DECODE_HEAD; | |
245 | iattr->ia_valid = 0; | |
246 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
247 | return status; | |
248 | ||
249 | /* | |
250 | * According to spec, unsupported attributes return ERR_NOTSUPP; | |
251 | * read-only attributes return ERR_INVAL. | |
252 | */ | |
253 | if ((bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) || (bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1)) | |
254 | return nfserr_attrnotsupp; | |
255 | if ((bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0) || (bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1)) | |
256 | return nfserr_inval; | |
257 | ||
258 | READ_BUF(4); | |
259 | READ32(expected_len); | |
260 | ||
261 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
262 | READ_BUF(8); | |
263 | len += 8; | |
264 | READ64(iattr->ia_size); | |
265 | iattr->ia_valid |= ATTR_SIZE; | |
266 | } | |
267 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
268 | int nace, i; | |
269 | struct nfs4_ace ace; | |
270 | ||
271 | READ_BUF(4); len += 4; | |
272 | READ32(nace); | |
273 | ||
274 | *acl = nfs4_acl_new(); | |
275 | if (*acl == NULL) { | |
276 | status = -ENOMEM; | |
277 | goto out_nfserr; | |
278 | } | |
279 | defer_free(argp, (void (*)(const void *))nfs4_acl_free, *acl); | |
280 | ||
281 | for (i = 0; i < nace; i++) { | |
282 | READ_BUF(16); len += 16; | |
283 | READ32(ace.type); | |
284 | READ32(ace.flag); | |
285 | READ32(ace.access_mask); | |
286 | READ32(dummy32); | |
287 | READ_BUF(dummy32); | |
288 | len += XDR_QUADLEN(dummy32) << 2; | |
289 | READMEM(buf, dummy32); | |
290 | ace.whotype = nfs4_acl_get_whotype(buf, dummy32); | |
291 | status = 0; | |
292 | if (ace.whotype != NFS4_ACL_WHO_NAMED) | |
293 | ace.who = 0; | |
294 | else if (ace.flag & NFS4_ACE_IDENTIFIER_GROUP) | |
295 | status = nfsd_map_name_to_gid(argp->rqstp, | |
296 | buf, dummy32, &ace.who); | |
297 | else | |
298 | status = nfsd_map_name_to_uid(argp->rqstp, | |
299 | buf, dummy32, &ace.who); | |
300 | if (status) | |
301 | goto out_nfserr; | |
b905b7b0 N |
302 | status = nfs4_acl_add_ace(*acl, ace.type, ace.flag, |
303 | ace.access_mask, ace.whotype, ace.who); | |
304 | if (status) | |
1da177e4 | 305 | goto out_nfserr; |
1da177e4 LT |
306 | } |
307 | } else | |
308 | *acl = NULL; | |
309 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
310 | READ_BUF(4); | |
311 | len += 4; | |
312 | READ32(iattr->ia_mode); | |
313 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); | |
314 | iattr->ia_valid |= ATTR_MODE; | |
315 | } | |
316 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
317 | READ_BUF(4); | |
318 | len += 4; | |
319 | READ32(dummy32); | |
320 | READ_BUF(dummy32); | |
321 | len += (XDR_QUADLEN(dummy32) << 2); | |
322 | READMEM(buf, dummy32); | |
323 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) | |
324 | goto out_nfserr; | |
325 | iattr->ia_valid |= ATTR_UID; | |
326 | } | |
327 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
328 | READ_BUF(4); | |
329 | len += 4; | |
330 | READ32(dummy32); | |
331 | READ_BUF(dummy32); | |
332 | len += (XDR_QUADLEN(dummy32) << 2); | |
333 | READMEM(buf, dummy32); | |
334 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) | |
335 | goto out_nfserr; | |
336 | iattr->ia_valid |= ATTR_GID; | |
337 | } | |
338 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
339 | READ_BUF(4); | |
340 | len += 4; | |
341 | READ32(dummy32); | |
342 | switch (dummy32) { | |
343 | case NFS4_SET_TO_CLIENT_TIME: | |
344 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
345 | all 32 bits of 'nseconds'. */ | |
346 | READ_BUF(12); | |
347 | len += 12; | |
348 | READ32(dummy32); | |
349 | if (dummy32) | |
350 | return nfserr_inval; | |
351 | READ32(iattr->ia_atime.tv_sec); | |
352 | READ32(iattr->ia_atime.tv_nsec); | |
353 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) | |
354 | return nfserr_inval; | |
355 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); | |
356 | break; | |
357 | case NFS4_SET_TO_SERVER_TIME: | |
358 | iattr->ia_valid |= ATTR_ATIME; | |
359 | break; | |
360 | default: | |
361 | goto xdr_error; | |
362 | } | |
363 | } | |
364 | if (bmval[1] & FATTR4_WORD1_TIME_METADATA) { | |
365 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
366 | all 32 bits of 'nseconds'. */ | |
367 | READ_BUF(12); | |
368 | len += 12; | |
369 | READ32(dummy32); | |
370 | if (dummy32) | |
371 | return nfserr_inval; | |
372 | READ32(iattr->ia_ctime.tv_sec); | |
373 | READ32(iattr->ia_ctime.tv_nsec); | |
374 | if (iattr->ia_ctime.tv_nsec >= (u32)1000000000) | |
375 | return nfserr_inval; | |
376 | iattr->ia_valid |= ATTR_CTIME; | |
377 | } | |
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 | } | |
404 | if (len != expected_len) | |
405 | goto xdr_error; | |
406 | ||
407 | DECODE_TAIL; | |
408 | ||
409 | out_nfserr: | |
410 | status = nfserrno(status); | |
411 | goto out; | |
412 | } | |
413 | ||
414 | static int | |
415 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) | |
416 | { | |
417 | DECODE_HEAD; | |
418 | ||
419 | READ_BUF(4); | |
420 | READ32(access->ac_req_access); | |
421 | ||
422 | DECODE_TAIL; | |
423 | } | |
424 | ||
425 | static int | |
426 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) | |
427 | { | |
428 | DECODE_HEAD; | |
429 | ||
430 | close->cl_stateowner = NULL; | |
431 | READ_BUF(4 + sizeof(stateid_t)); | |
432 | READ32(close->cl_seqid); | |
433 | READ32(close->cl_stateid.si_generation); | |
434 | COPYMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
435 | ||
436 | DECODE_TAIL; | |
437 | } | |
438 | ||
439 | ||
440 | static int | |
441 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) | |
442 | { | |
443 | DECODE_HEAD; | |
444 | ||
445 | READ_BUF(12); | |
446 | READ64(commit->co_offset); | |
447 | READ32(commit->co_count); | |
448 | ||
449 | DECODE_TAIL; | |
450 | } | |
451 | ||
452 | static int | |
453 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) | |
454 | { | |
455 | DECODE_HEAD; | |
456 | ||
457 | READ_BUF(4); | |
458 | READ32(create->cr_type); | |
459 | switch (create->cr_type) { | |
460 | case NF4LNK: | |
461 | READ_BUF(4); | |
462 | READ32(create->cr_linklen); | |
463 | READ_BUF(create->cr_linklen); | |
464 | SAVEMEM(create->cr_linkname, create->cr_linklen); | |
465 | break; | |
466 | case NF4BLK: | |
467 | case NF4CHR: | |
468 | READ_BUF(8); | |
469 | READ32(create->cr_specdata1); | |
470 | READ32(create->cr_specdata2); | |
471 | break; | |
472 | case NF4SOCK: | |
473 | case NF4FIFO: | |
474 | case NF4DIR: | |
475 | default: | |
476 | break; | |
477 | } | |
478 | ||
479 | READ_BUF(4); | |
480 | READ32(create->cr_namelen); | |
481 | READ_BUF(create->cr_namelen); | |
482 | SAVEMEM(create->cr_name, create->cr_namelen); | |
483 | if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval))) | |
484 | return status; | |
485 | ||
486 | if ((status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, &create->cr_acl))) | |
487 | goto out; | |
488 | ||
489 | DECODE_TAIL; | |
490 | } | |
491 | ||
492 | static inline int | |
493 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) | |
494 | { | |
495 | DECODE_HEAD; | |
496 | ||
497 | READ_BUF(sizeof(stateid_t)); | |
498 | READ32(dr->dr_stateid.si_generation); | |
499 | COPYMEM(&dr->dr_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
500 | ||
501 | DECODE_TAIL; | |
502 | } | |
503 | ||
504 | static inline int | |
505 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) | |
506 | { | |
507 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
508 | } | |
509 | ||
510 | static int | |
511 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) | |
512 | { | |
513 | DECODE_HEAD; | |
514 | ||
515 | READ_BUF(4); | |
516 | READ32(link->li_namelen); | |
517 | READ_BUF(link->li_namelen); | |
518 | SAVEMEM(link->li_name, link->li_namelen); | |
519 | if ((status = check_filename(link->li_name, link->li_namelen, nfserr_inval))) | |
520 | return status; | |
521 | ||
522 | DECODE_TAIL; | |
523 | } | |
524 | ||
525 | static int | |
526 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) | |
527 | { | |
528 | DECODE_HEAD; | |
529 | ||
3a65588a | 530 | lock->lk_replay_owner = NULL; |
1da177e4 LT |
531 | /* |
532 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
533 | */ | |
534 | READ_BUF(28); | |
535 | READ32(lock->lk_type); | |
536 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) | |
537 | goto xdr_error; | |
538 | READ32(lock->lk_reclaim); | |
539 | READ64(lock->lk_offset); | |
540 | READ64(lock->lk_length); | |
541 | READ32(lock->lk_is_new); | |
542 | ||
543 | if (lock->lk_is_new) { | |
544 | READ_BUF(36); | |
545 | READ32(lock->lk_new_open_seqid); | |
546 | READ32(lock->lk_new_open_stateid.si_generation); | |
547 | ||
548 | COPYMEM(&lock->lk_new_open_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
549 | READ32(lock->lk_new_lock_seqid); | |
550 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); | |
551 | READ32(lock->lk_new_owner.len); | |
552 | READ_BUF(lock->lk_new_owner.len); | |
553 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
554 | } else { | |
555 | READ_BUF(20); | |
556 | READ32(lock->lk_old_lock_stateid.si_generation); | |
557 | COPYMEM(&lock->lk_old_lock_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
558 | READ32(lock->lk_old_lock_seqid); | |
559 | } | |
560 | ||
561 | DECODE_TAIL; | |
562 | } | |
563 | ||
564 | static int | |
565 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) | |
566 | { | |
567 | DECODE_HEAD; | |
568 | ||
569 | READ_BUF(32); | |
570 | READ32(lockt->lt_type); | |
571 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) | |
572 | goto xdr_error; | |
573 | READ64(lockt->lt_offset); | |
574 | READ64(lockt->lt_length); | |
575 | COPYMEM(&lockt->lt_clientid, 8); | |
576 | READ32(lockt->lt_owner.len); | |
577 | READ_BUF(lockt->lt_owner.len); | |
578 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
579 | ||
580 | DECODE_TAIL; | |
581 | } | |
582 | ||
583 | static int | |
584 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) | |
585 | { | |
586 | DECODE_HEAD; | |
587 | ||
588 | locku->lu_stateowner = NULL; | |
589 | READ_BUF(24 + sizeof(stateid_t)); | |
590 | READ32(locku->lu_type); | |
591 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) | |
592 | goto xdr_error; | |
593 | READ32(locku->lu_seqid); | |
594 | READ32(locku->lu_stateid.si_generation); | |
595 | COPYMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
596 | READ64(locku->lu_offset); | |
597 | READ64(locku->lu_length); | |
598 | ||
599 | DECODE_TAIL; | |
600 | } | |
601 | ||
602 | static int | |
603 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) | |
604 | { | |
605 | DECODE_HEAD; | |
606 | ||
607 | READ_BUF(4); | |
608 | READ32(lookup->lo_len); | |
609 | READ_BUF(lookup->lo_len); | |
610 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
611 | if ((status = check_filename(lookup->lo_name, lookup->lo_len, nfserr_noent))) | |
612 | return status; | |
613 | ||
614 | DECODE_TAIL; | |
615 | } | |
616 | ||
617 | static int | |
618 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) | |
619 | { | |
620 | DECODE_HEAD; | |
621 | ||
622 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
623 | open->op_iattr.ia_valid = 0; | |
624 | open->op_stateowner = NULL; | |
625 | ||
626 | /* seqid, share_access, share_deny, clientid, ownerlen */ | |
627 | READ_BUF(16 + sizeof(clientid_t)); | |
628 | READ32(open->op_seqid); | |
629 | READ32(open->op_share_access); | |
630 | READ32(open->op_share_deny); | |
631 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); | |
632 | READ32(open->op_owner.len); | |
633 | ||
634 | /* owner, open_flag */ | |
635 | READ_BUF(open->op_owner.len + 4); | |
636 | SAVEMEM(open->op_owner.data, open->op_owner.len); | |
637 | READ32(open->op_create); | |
638 | switch (open->op_create) { | |
639 | case NFS4_OPEN_NOCREATE: | |
640 | break; | |
641 | case NFS4_OPEN_CREATE: | |
642 | READ_BUF(4); | |
643 | READ32(open->op_createmode); | |
644 | switch (open->op_createmode) { | |
645 | case NFS4_CREATE_UNCHECKED: | |
646 | case NFS4_CREATE_GUARDED: | |
647 | if ((status = nfsd4_decode_fattr(argp, open->op_bmval, &open->op_iattr, &open->op_acl))) | |
648 | goto out; | |
649 | break; | |
650 | case NFS4_CREATE_EXCLUSIVE: | |
651 | READ_BUF(8); | |
652 | COPYMEM(open->op_verf.data, 8); | |
653 | break; | |
654 | default: | |
655 | goto xdr_error; | |
656 | } | |
657 | break; | |
658 | default: | |
659 | goto xdr_error; | |
660 | } | |
661 | ||
662 | /* open_claim */ | |
663 | READ_BUF(4); | |
664 | READ32(open->op_claim_type); | |
665 | switch (open->op_claim_type) { | |
666 | case NFS4_OPEN_CLAIM_NULL: | |
667 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
668 | READ_BUF(4); | |
669 | READ32(open->op_fname.len); | |
670 | READ_BUF(open->op_fname.len); | |
671 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
672 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) | |
673 | return status; | |
674 | break; | |
675 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
676 | READ_BUF(4); | |
677 | READ32(open->op_delegate_type); | |
678 | break; | |
679 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
680 | READ_BUF(sizeof(stateid_t) + 4); | |
681 | COPYMEM(&open->op_delegate_stateid, sizeof(stateid_t)); | |
682 | READ32(open->op_fname.len); | |
683 | READ_BUF(open->op_fname.len); | |
684 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
685 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) | |
686 | return status; | |
687 | break; | |
688 | default: | |
689 | goto xdr_error; | |
690 | } | |
691 | ||
692 | DECODE_TAIL; | |
693 | } | |
694 | ||
695 | static int | |
696 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) | |
697 | { | |
698 | DECODE_HEAD; | |
699 | ||
700 | open_conf->oc_stateowner = NULL; | |
701 | READ_BUF(4 + sizeof(stateid_t)); | |
702 | READ32(open_conf->oc_req_stateid.si_generation); | |
703 | COPYMEM(&open_conf->oc_req_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
704 | READ32(open_conf->oc_seqid); | |
705 | ||
706 | DECODE_TAIL; | |
707 | } | |
708 | ||
709 | static int | |
710 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) | |
711 | { | |
712 | DECODE_HEAD; | |
713 | ||
714 | open_down->od_stateowner = NULL; | |
715 | READ_BUF(12 + sizeof(stateid_t)); | |
716 | READ32(open_down->od_stateid.si_generation); | |
717 | COPYMEM(&open_down->od_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
718 | READ32(open_down->od_seqid); | |
719 | READ32(open_down->od_share_access); | |
720 | READ32(open_down->od_share_deny); | |
721 | ||
722 | DECODE_TAIL; | |
723 | } | |
724 | ||
725 | static int | |
726 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) | |
727 | { | |
728 | DECODE_HEAD; | |
729 | ||
730 | READ_BUF(4); | |
731 | READ32(putfh->pf_fhlen); | |
732 | if (putfh->pf_fhlen > NFS4_FHSIZE) | |
733 | goto xdr_error; | |
734 | READ_BUF(putfh->pf_fhlen); | |
735 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
736 | ||
737 | DECODE_TAIL; | |
738 | } | |
739 | ||
740 | static int | |
741 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) | |
742 | { | |
743 | DECODE_HEAD; | |
744 | ||
745 | READ_BUF(sizeof(stateid_t) + 12); | |
746 | READ32(read->rd_stateid.si_generation); | |
747 | COPYMEM(&read->rd_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
748 | READ64(read->rd_offset); | |
749 | READ32(read->rd_length); | |
750 | ||
751 | DECODE_TAIL; | |
752 | } | |
753 | ||
754 | static int | |
755 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) | |
756 | { | |
757 | DECODE_HEAD; | |
758 | ||
759 | READ_BUF(24); | |
760 | READ64(readdir->rd_cookie); | |
761 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); | |
762 | READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ | |
763 | READ32(readdir->rd_maxcount); | |
764 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) | |
765 | goto out; | |
766 | ||
767 | DECODE_TAIL; | |
768 | } | |
769 | ||
770 | static int | |
771 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) | |
772 | { | |
773 | DECODE_HEAD; | |
774 | ||
775 | READ_BUF(4); | |
776 | READ32(remove->rm_namelen); | |
777 | READ_BUF(remove->rm_namelen); | |
778 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
779 | if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent))) | |
780 | return status; | |
781 | ||
782 | DECODE_TAIL; | |
783 | } | |
784 | ||
785 | static int | |
786 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) | |
787 | { | |
788 | DECODE_HEAD; | |
789 | ||
790 | READ_BUF(4); | |
791 | READ32(rename->rn_snamelen); | |
792 | READ_BUF(rename->rn_snamelen + 4); | |
793 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); | |
794 | READ32(rename->rn_tnamelen); | |
795 | READ_BUF(rename->rn_tnamelen); | |
796 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
797 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent))) | |
798 | return status; | |
799 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval))) | |
800 | return status; | |
801 | ||
802 | DECODE_TAIL; | |
803 | } | |
804 | ||
805 | static int | |
806 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) | |
807 | { | |
808 | DECODE_HEAD; | |
809 | ||
810 | READ_BUF(sizeof(clientid_t)); | |
811 | COPYMEM(clientid, sizeof(clientid_t)); | |
812 | ||
813 | DECODE_TAIL; | |
814 | } | |
815 | ||
816 | static int | |
817 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) | |
818 | { | |
819 | DECODE_HEAD; | |
820 | ||
821 | READ_BUF(sizeof(stateid_t)); | |
822 | READ32(setattr->sa_stateid.si_generation); | |
823 | COPYMEM(&setattr->sa_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
824 | if ((status = nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, &setattr->sa_acl))) | |
825 | goto out; | |
826 | ||
827 | DECODE_TAIL; | |
828 | } | |
829 | ||
830 | static int | |
831 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) | |
832 | { | |
833 | DECODE_HEAD; | |
834 | ||
835 | READ_BUF(12); | |
836 | COPYMEM(setclientid->se_verf.data, 8); | |
837 | READ32(setclientid->se_namelen); | |
838 | ||
839 | READ_BUF(setclientid->se_namelen + 8); | |
840 | SAVEMEM(setclientid->se_name, setclientid->se_namelen); | |
841 | READ32(setclientid->se_callback_prog); | |
842 | READ32(setclientid->se_callback_netid_len); | |
843 | ||
844 | READ_BUF(setclientid->se_callback_netid_len + 4); | |
845 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); | |
846 | READ32(setclientid->se_callback_addr_len); | |
847 | ||
848 | READ_BUF(setclientid->se_callback_addr_len + 4); | |
849 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); | |
850 | READ32(setclientid->se_callback_ident); | |
851 | ||
852 | DECODE_TAIL; | |
853 | } | |
854 | ||
855 | static int | |
856 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) | |
857 | { | |
858 | DECODE_HEAD; | |
859 | ||
860 | READ_BUF(8 + sizeof(nfs4_verifier)); | |
861 | COPYMEM(&scd_c->sc_clientid, 8); | |
862 | COPYMEM(&scd_c->sc_confirm, sizeof(nfs4_verifier)); | |
863 | ||
864 | DECODE_TAIL; | |
865 | } | |
866 | ||
867 | /* Also used for NVERIFY */ | |
868 | static int | |
869 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) | |
870 | { | |
871 | #if 0 | |
872 | struct nfsd4_compoundargs save = { | |
873 | .p = argp->p, | |
874 | .end = argp->end, | |
875 | .rqstp = argp->rqstp, | |
876 | }; | |
877 | u32 ve_bmval[2]; | |
878 | struct iattr ve_iattr; /* request */ | |
879 | struct nfs4_acl *ve_acl; /* request */ | |
880 | #endif | |
881 | DECODE_HEAD; | |
882 | ||
883 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
884 | goto out; | |
885 | ||
886 | /* For convenience's sake, we compare raw xdr'd attributes in | |
887 | * nfsd4_proc_verify; however we still decode here just to return | |
888 | * correct error in case of bad xdr. */ | |
889 | #if 0 | |
890 | status = nfsd4_decode_fattr(ve_bmval, &ve_iattr, &ve_acl); | |
891 | if (status == nfserr_inval) { | |
892 | status = nfserrno(status); | |
893 | goto out; | |
894 | } | |
895 | #endif | |
896 | READ_BUF(4); | |
897 | READ32(verify->ve_attrlen); | |
898 | READ_BUF(verify->ve_attrlen); | |
899 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
900 | ||
901 | DECODE_TAIL; | |
902 | } | |
903 | ||
904 | static int | |
905 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) | |
906 | { | |
907 | int avail; | |
908 | int v; | |
909 | int len; | |
910 | DECODE_HEAD; | |
911 | ||
912 | READ_BUF(sizeof(stateid_opaque_t) + 20); | |
913 | READ32(write->wr_stateid.si_generation); | |
914 | COPYMEM(&write->wr_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
915 | READ64(write->wr_offset); | |
916 | READ32(write->wr_stable_how); | |
917 | if (write->wr_stable_how > 2) | |
918 | goto xdr_error; | |
919 | READ32(write->wr_buflen); | |
920 | ||
921 | /* Sorry .. no magic macros for this.. * | |
922 | * READ_BUF(write->wr_buflen); | |
923 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
924 | */ | |
925 | avail = (char*)argp->end - (char*)argp->p; | |
926 | if (avail + argp->pagelen < write->wr_buflen) { | |
927 | printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); | |
928 | goto xdr_error; | |
929 | } | |
930 | write->wr_vec[0].iov_base = p; | |
931 | write->wr_vec[0].iov_len = avail; | |
932 | v = 0; | |
933 | len = write->wr_buflen; | |
934 | while (len > write->wr_vec[v].iov_len) { | |
935 | len -= write->wr_vec[v].iov_len; | |
936 | v++; | |
937 | write->wr_vec[v].iov_base = page_address(argp->pagelist[0]); | |
938 | argp->pagelist++; | |
939 | if (argp->pagelen >= PAGE_SIZE) { | |
940 | write->wr_vec[v].iov_len = PAGE_SIZE; | |
941 | argp->pagelen -= PAGE_SIZE; | |
942 | } else { | |
943 | write->wr_vec[v].iov_len = argp->pagelen; | |
944 | argp->pagelen -= len; | |
945 | } | |
946 | } | |
947 | argp->end = (u32*) (write->wr_vec[v].iov_base + write->wr_vec[v].iov_len); | |
948 | argp->p = (u32*) (write->wr_vec[v].iov_base + (XDR_QUADLEN(len) << 2)); | |
949 | write->wr_vec[v].iov_len = len; | |
950 | write->wr_vlen = v+1; | |
951 | ||
952 | DECODE_TAIL; | |
953 | } | |
954 | ||
955 | static int | |
956 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) | |
957 | { | |
958 | DECODE_HEAD; | |
959 | ||
960 | READ_BUF(12); | |
961 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
962 | READ32(rlockowner->rl_owner.len); | |
963 | READ_BUF(rlockowner->rl_owner.len); | |
964 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
965 | ||
966 | DECODE_TAIL; | |
967 | } | |
968 | ||
969 | static int | |
970 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) | |
971 | { | |
972 | DECODE_HEAD; | |
973 | struct nfsd4_op *op; | |
974 | int i; | |
975 | ||
976 | /* | |
977 | * XXX: According to spec, we should check the tag | |
978 | * for UTF-8 compliance. I'm postponing this for | |
979 | * now because it seems that some clients do use | |
980 | * binary tags. | |
981 | */ | |
982 | READ_BUF(4); | |
983 | READ32(argp->taglen); | |
984 | READ_BUF(argp->taglen + 8); | |
985 | SAVEMEM(argp->tag, argp->taglen); | |
986 | READ32(argp->minorversion); | |
987 | READ32(argp->opcnt); | |
988 | ||
989 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
990 | goto xdr_error; | |
991 | if (argp->opcnt > 100) | |
992 | goto xdr_error; | |
993 | ||
e8c96f8c | 994 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
1da177e4 LT |
995 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
996 | if (!argp->ops) { | |
997 | argp->ops = argp->iops; | |
998 | printk(KERN_INFO "nfsd: couldn't allocate room for COMPOUND\n"); | |
999 | goto xdr_error; | |
1000 | } | |
1001 | } | |
1002 | ||
1003 | for (i = 0; i < argp->opcnt; i++) { | |
1004 | op = &argp->ops[i]; | |
1005 | op->replay = NULL; | |
1006 | ||
1007 | /* | |
1008 | * We can't use READ_BUF() here because we need to handle | |
1009 | * a missing opcode as an OP_WRITE + 1. So we need to check | |
1010 | * to see if we're truly at the end of our buffer or if there | |
1011 | * is another page we need to flip to. | |
1012 | */ | |
1013 | ||
1014 | if (argp->p == argp->end) { | |
1015 | if (argp->pagelen < 4) { | |
1016 | /* There isn't an opcode still on the wire */ | |
1017 | op->opnum = OP_WRITE + 1; | |
1018 | op->status = nfserr_bad_xdr; | |
1019 | argp->opcnt = i+1; | |
1020 | break; | |
1021 | } | |
1022 | ||
1023 | /* | |
1024 | * False alarm. We just hit a page boundary, but there | |
1025 | * is still data available. Move pointer across page | |
1026 | * boundary. *snip from READ_BUF* | |
1027 | */ | |
1028 | argp->p = page_address(argp->pagelist[0]); | |
1029 | argp->pagelist++; | |
1030 | if (argp->pagelen < PAGE_SIZE) { | |
1031 | argp->end = p + (argp->pagelen>>2); | |
1032 | argp->pagelen = 0; | |
1033 | } else { | |
1034 | argp->end = p + (PAGE_SIZE>>2); | |
1035 | argp->pagelen -= PAGE_SIZE; | |
1036 | } | |
1037 | } | |
1038 | op->opnum = ntohl(*argp->p++); | |
1039 | ||
1040 | switch (op->opnum) { | |
1041 | case 2: /* Reserved operation */ | |
1042 | op->opnum = OP_ILLEGAL; | |
1043 | if (argp->minorversion == 0) | |
1044 | op->status = nfserr_op_illegal; | |
1045 | else | |
1046 | op->status = nfserr_minor_vers_mismatch; | |
1047 | break; | |
1048 | case OP_ACCESS: | |
1049 | op->status = nfsd4_decode_access(argp, &op->u.access); | |
1050 | break; | |
1051 | case OP_CLOSE: | |
1052 | op->status = nfsd4_decode_close(argp, &op->u.close); | |
1053 | break; | |
1054 | case OP_COMMIT: | |
1055 | op->status = nfsd4_decode_commit(argp, &op->u.commit); | |
1056 | break; | |
1057 | case OP_CREATE: | |
1058 | op->status = nfsd4_decode_create(argp, &op->u.create); | |
1059 | break; | |
1060 | case OP_DELEGRETURN: | |
1061 | op->status = nfsd4_decode_delegreturn(argp, &op->u.delegreturn); | |
1062 | break; | |
1063 | case OP_GETATTR: | |
1064 | op->status = nfsd4_decode_getattr(argp, &op->u.getattr); | |
1065 | break; | |
1066 | case OP_GETFH: | |
1067 | op->status = nfs_ok; | |
1068 | break; | |
1069 | case OP_LINK: | |
1070 | op->status = nfsd4_decode_link(argp, &op->u.link); | |
1071 | break; | |
1072 | case OP_LOCK: | |
1073 | op->status = nfsd4_decode_lock(argp, &op->u.lock); | |
1074 | break; | |
1075 | case OP_LOCKT: | |
1076 | op->status = nfsd4_decode_lockt(argp, &op->u.lockt); | |
1077 | break; | |
1078 | case OP_LOCKU: | |
1079 | op->status = nfsd4_decode_locku(argp, &op->u.locku); | |
1080 | break; | |
1081 | case OP_LOOKUP: | |
1082 | op->status = nfsd4_decode_lookup(argp, &op->u.lookup); | |
1083 | break; | |
1084 | case OP_LOOKUPP: | |
1085 | op->status = nfs_ok; | |
1086 | break; | |
1087 | case OP_NVERIFY: | |
1088 | op->status = nfsd4_decode_verify(argp, &op->u.nverify); | |
1089 | break; | |
1090 | case OP_OPEN: | |
1091 | op->status = nfsd4_decode_open(argp, &op->u.open); | |
1092 | break; | |
1093 | case OP_OPEN_CONFIRM: | |
1094 | op->status = nfsd4_decode_open_confirm(argp, &op->u.open_confirm); | |
1095 | break; | |
1096 | case OP_OPEN_DOWNGRADE: | |
1097 | op->status = nfsd4_decode_open_downgrade(argp, &op->u.open_downgrade); | |
1098 | break; | |
1099 | case OP_PUTFH: | |
1100 | op->status = nfsd4_decode_putfh(argp, &op->u.putfh); | |
1101 | break; | |
1102 | case OP_PUTROOTFH: | |
1103 | op->status = nfs_ok; | |
1104 | break; | |
1105 | case OP_READ: | |
1106 | op->status = nfsd4_decode_read(argp, &op->u.read); | |
1107 | break; | |
1108 | case OP_READDIR: | |
1109 | op->status = nfsd4_decode_readdir(argp, &op->u.readdir); | |
1110 | break; | |
1111 | case OP_READLINK: | |
1112 | op->status = nfs_ok; | |
1113 | break; | |
1114 | case OP_REMOVE: | |
1115 | op->status = nfsd4_decode_remove(argp, &op->u.remove); | |
1116 | break; | |
1117 | case OP_RENAME: | |
1118 | op->status = nfsd4_decode_rename(argp, &op->u.rename); | |
1119 | break; | |
1120 | case OP_RESTOREFH: | |
1121 | op->status = nfs_ok; | |
1122 | break; | |
1123 | case OP_RENEW: | |
1124 | op->status = nfsd4_decode_renew(argp, &op->u.renew); | |
1125 | break; | |
1126 | case OP_SAVEFH: | |
1127 | op->status = nfs_ok; | |
1128 | break; | |
1129 | case OP_SETATTR: | |
1130 | op->status = nfsd4_decode_setattr(argp, &op->u.setattr); | |
1131 | break; | |
1132 | case OP_SETCLIENTID: | |
1133 | op->status = nfsd4_decode_setclientid(argp, &op->u.setclientid); | |
1134 | break; | |
1135 | case OP_SETCLIENTID_CONFIRM: | |
1136 | op->status = nfsd4_decode_setclientid_confirm(argp, &op->u.setclientid_confirm); | |
1137 | break; | |
1138 | case OP_VERIFY: | |
1139 | op->status = nfsd4_decode_verify(argp, &op->u.verify); | |
1140 | break; | |
1141 | case OP_WRITE: | |
1142 | op->status = nfsd4_decode_write(argp, &op->u.write); | |
1143 | break; | |
1144 | case OP_RELEASE_LOCKOWNER: | |
1145 | op->status = nfsd4_decode_release_lockowner(argp, &op->u.release_lockowner); | |
1146 | break; | |
1147 | default: | |
1148 | op->opnum = OP_ILLEGAL; | |
1149 | op->status = nfserr_op_illegal; | |
1150 | break; | |
1151 | } | |
1152 | ||
1153 | if (op->status) { | |
1154 | argp->opcnt = i+1; | |
1155 | break; | |
1156 | } | |
1157 | } | |
1158 | ||
1159 | DECODE_TAIL; | |
1160 | } | |
1161 | /* | |
1162 | * END OF "GENERIC" DECODE ROUTINES. | |
1163 | */ | |
1164 | ||
1165 | /* | |
1166 | * START OF "GENERIC" ENCODE ROUTINES. | |
1167 | * These may look a little ugly since they are imported from a "generic" | |
1168 | * set of XDR encode/decode routines which are intended to be shared by | |
1169 | * all of our NFSv4 implementations (OpenBSD, MacOS X...). | |
1170 | * | |
1171 | * If the pain of reading these is too great, it should be a straightforward | |
1172 | * task to translate them into Linux-specific versions which are more | |
1173 | * consistent with the style used in NFSv2/v3... | |
1174 | */ | |
1175 | #define ENCODE_HEAD u32 *p | |
1176 | ||
1177 | #define WRITE32(n) *p++ = htonl(n) | |
1178 | #define WRITE64(n) do { \ | |
1179 | *p++ = htonl((u32)((n) >> 32)); \ | |
1180 | *p++ = htonl((u32)(n)); \ | |
1181 | } while (0) | |
1182 | #define WRITEMEM(ptr,nbytes) do { \ | |
1183 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ | |
1184 | memcpy(p, ptr, nbytes); \ | |
1185 | p += XDR_QUADLEN(nbytes); \ | |
1186 | } while (0) | |
1187 | #define WRITECINFO(c) do { \ | |
1188 | *p++ = htonl(c.atomic); \ | |
1189 | *p++ = htonl(c.before_ctime_sec); \ | |
1190 | *p++ = htonl(c.before_ctime_nsec); \ | |
1191 | *p++ = htonl(c.after_ctime_sec); \ | |
1192 | *p++ = htonl(c.after_ctime_nsec); \ | |
1193 | } while (0) | |
1194 | ||
1195 | #define RESERVE_SPACE(nbytes) do { \ | |
1196 | p = resp->p; \ | |
1197 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ | |
1198 | } while (0) | |
1199 | #define ADJUST_ARGS() resp->p = p | |
1200 | ||
1201 | /* | |
1202 | * Header routine to setup seqid operation replay cache | |
1203 | */ | |
1204 | #define ENCODE_SEQID_OP_HEAD \ | |
1205 | u32 *p; \ | |
1206 | u32 *save; \ | |
1207 | \ | |
1208 | save = resp->p; | |
1209 | ||
1210 | /* | |
7fb64cee N |
1211 | * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This |
1212 | * is where sequence id's are incremented, and the replay cache is filled. | |
1213 | * Note that we increment sequence id's here, at the last moment, so we're sure | |
1214 | * we know whether the error to be returned is a sequence id mutating error. | |
1da177e4 LT |
1215 | */ |
1216 | ||
1217 | #define ENCODE_SEQID_OP_TAIL(stateowner) do { \ | |
1218 | if (seqid_mutating_err(nfserr) && stateowner) { \ | |
bd9aac52 | 1219 | stateowner->so_seqid++; \ |
1da177e4 LT |
1220 | stateowner->so_replay.rp_status = nfserr; \ |
1221 | stateowner->so_replay.rp_buflen = \ | |
1222 | (((char *)(resp)->p - (char *)save)); \ | |
1223 | memcpy(stateowner->so_replay.rp_buf, save, \ | |
1224 | stateowner->so_replay.rp_buflen); \ | |
1225 | } } while (0); | |
1226 | ||
1227 | ||
1228 | static u32 nfs4_ftypes[16] = { | |
1229 | NF4BAD, NF4FIFO, NF4CHR, NF4BAD, | |
1230 | NF4DIR, NF4BAD, NF4BLK, NF4BAD, | |
1231 | NF4REG, NF4BAD, NF4LNK, NF4BAD, | |
1232 | NF4SOCK, NF4BAD, NF4LNK, NF4BAD, | |
1233 | }; | |
1234 | ||
1235 | static int | |
1236 | nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group, | |
1237 | u32 **p, int *buflen) | |
1238 | { | |
1239 | int status; | |
1240 | ||
1241 | if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) | |
1242 | return nfserr_resource; | |
1243 | if (whotype != NFS4_ACL_WHO_NAMED) | |
1244 | status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); | |
1245 | else if (group) | |
1246 | status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1247 | else | |
1248 | status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1249 | if (status < 0) | |
1250 | return nfserrno(status); | |
1251 | *p = xdr_encode_opaque(*p, NULL, status); | |
1252 | *buflen -= (XDR_QUADLEN(status) << 2) + 4; | |
1253 | BUG_ON(*buflen < 0); | |
1254 | return 0; | |
1255 | } | |
1256 | ||
1257 | static inline int | |
1258 | nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, u32 **p, int *buflen) | |
1259 | { | |
1260 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen); | |
1261 | } | |
1262 | ||
1263 | static inline int | |
1264 | nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, u32 **p, int *buflen) | |
1265 | { | |
1266 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen); | |
1267 | } | |
1268 | ||
1269 | static inline int | |
1270 | nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group, | |
1271 | u32 **p, int *buflen) | |
1272 | { | |
1273 | return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen); | |
1274 | } | |
1275 | ||
1276 | ||
1277 | /* | |
1278 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
1279 | * ourselves. | |
1280 | * | |
1281 | * @countp is the buffer size in _words_; upon successful return this becomes | |
1282 | * replaced with the number of words written. | |
1283 | */ | |
1284 | int | |
1285 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, | |
1286 | struct dentry *dentry, u32 *buffer, int *countp, u32 *bmval, | |
1287 | struct svc_rqst *rqstp) | |
1288 | { | |
1289 | u32 bmval0 = bmval[0]; | |
1290 | u32 bmval1 = bmval[1]; | |
1291 | struct kstat stat; | |
1292 | struct svc_fh tempfh; | |
1293 | struct kstatfs statfs; | |
1294 | int buflen = *countp << 2; | |
1295 | u32 *attrlenp; | |
1296 | u32 dummy; | |
1297 | u64 dummy64; | |
1298 | u32 *p = buffer; | |
1299 | int status; | |
1300 | int aclsupport = 0; | |
1301 | struct nfs4_acl *acl = NULL; | |
1302 | ||
1303 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
1304 | BUG_ON(bmval0 & ~NFSD_SUPPORTED_ATTRS_WORD0); | |
1305 | BUG_ON(bmval1 & ~NFSD_SUPPORTED_ATTRS_WORD1); | |
1306 | ||
1307 | status = vfs_getattr(exp->ex_mnt, dentry, &stat); | |
1308 | if (status) | |
1309 | goto out_nfserr; | |
1310 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL)) || | |
1311 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | | |
1312 | FATTR4_WORD1_SPACE_TOTAL))) { | |
726c3342 | 1313 | status = vfs_statfs(dentry, &statfs); |
1da177e4 LT |
1314 | if (status) |
1315 | goto out_nfserr; | |
1316 | } | |
1317 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
1318 | fh_init(&tempfh, NFS4_FHSIZE); | |
1319 | status = fh_compose(&tempfh, exp, dentry, NULL); | |
1320 | if (status) | |
1321 | goto out; | |
1322 | fhp = &tempfh; | |
1323 | } | |
1324 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
1325 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
1326 | status = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); | |
1327 | aclsupport = (status == 0); | |
1328 | if (bmval0 & FATTR4_WORD0_ACL) { | |
1329 | if (status == -EOPNOTSUPP) | |
1330 | bmval0 &= ~FATTR4_WORD0_ACL; | |
1331 | else if (status == -EINVAL) { | |
1332 | status = nfserr_attrnotsupp; | |
1333 | goto out; | |
1334 | } else if (status != 0) | |
1335 | goto out_nfserr; | |
1336 | } | |
1337 | } | |
1338 | if ((buflen -= 16) < 0) | |
1339 | goto out_resource; | |
1340 | ||
1341 | WRITE32(2); | |
1342 | WRITE32(bmval0); | |
1343 | WRITE32(bmval1); | |
1344 | attrlenp = p++; /* to be backfilled later */ | |
1345 | ||
1346 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
1347 | if ((buflen -= 12) < 0) | |
1348 | goto out_resource; | |
1349 | WRITE32(2); | |
1350 | WRITE32(aclsupport ? | |
1351 | NFSD_SUPPORTED_ATTRS_WORD0 : | |
1352 | NFSD_SUPPORTED_ATTRS_WORD0 & ~FATTR4_WORD0_ACL); | |
1353 | WRITE32(NFSD_SUPPORTED_ATTRS_WORD1); | |
1354 | } | |
1355 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
1356 | if ((buflen -= 4) < 0) | |
1357 | goto out_resource; | |
1358 | dummy = nfs4_ftypes[(stat.mode & S_IFMT) >> 12]; | |
1359 | if (dummy == NF4BAD) | |
1360 | goto out_serverfault; | |
1361 | WRITE32(dummy); | |
1362 | } | |
1363 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
1364 | if ((buflen -= 4) < 0) | |
1365 | goto out_resource; | |
49640001 | 1366 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
e34ac862 | 1367 | WRITE32(NFS4_FH_PERSISTENT); |
49640001 | 1368 | else |
e34ac862 | 1369 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
1da177e4 LT |
1370 | } |
1371 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
1372 | /* | |
1373 | * Note: This _must_ be consistent with the scheme for writing | |
1374 | * change_info, so any changes made here must be reflected there | |
1375 | * as well. (See xdr4.h:set_change_info() and the WRITECINFO() | |
1376 | * macro above.) | |
1377 | */ | |
1378 | if ((buflen -= 8) < 0) | |
1379 | goto out_resource; | |
1380 | WRITE32(stat.ctime.tv_sec); | |
1381 | WRITE32(stat.ctime.tv_nsec); | |
1382 | } | |
1383 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
1384 | if ((buflen -= 8) < 0) | |
1385 | goto out_resource; | |
1386 | WRITE64(stat.size); | |
1387 | } | |
1388 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
1389 | if ((buflen -= 4) < 0) | |
1390 | goto out_resource; | |
1391 | WRITE32(1); | |
1392 | } | |
1393 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
1394 | if ((buflen -= 4) < 0) | |
1395 | goto out_resource; | |
1396 | WRITE32(1); | |
1397 | } | |
1398 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
1399 | if ((buflen -= 4) < 0) | |
1400 | goto out_resource; | |
1401 | WRITE32(0); | |
1402 | } | |
1403 | if (bmval0 & FATTR4_WORD0_FSID) { | |
1404 | if ((buflen -= 16) < 0) | |
1405 | goto out_resource; | |
1406 | if (is_fsid(fhp, rqstp->rq_reffh)) { | |
1407 | WRITE64((u64)exp->ex_fsid); | |
1408 | WRITE64((u64)0); | |
1409 | } else { | |
1410 | WRITE32(0); | |
1411 | WRITE32(MAJOR(stat.dev)); | |
1412 | WRITE32(0); | |
1413 | WRITE32(MINOR(stat.dev)); | |
1414 | } | |
1415 | } | |
1416 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
1417 | if ((buflen -= 4) < 0) | |
1418 | goto out_resource; | |
1419 | WRITE32(0); | |
1420 | } | |
1421 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
1422 | if ((buflen -= 4) < 0) | |
1423 | goto out_resource; | |
1424 | WRITE32(NFSD_LEASE_TIME); | |
1425 | } | |
1426 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
1427 | if ((buflen -= 4) < 0) | |
1428 | goto out_resource; | |
1429 | WRITE32(0); | |
1430 | } | |
1431 | if (bmval0 & FATTR4_WORD0_ACL) { | |
1432 | struct nfs4_ace *ace; | |
1433 | struct list_head *h; | |
1434 | ||
1435 | if (acl == NULL) { | |
1436 | if ((buflen -= 4) < 0) | |
1437 | goto out_resource; | |
1438 | ||
1439 | WRITE32(0); | |
1440 | goto out_acl; | |
1441 | } | |
1442 | if ((buflen -= 4) < 0) | |
1443 | goto out_resource; | |
1444 | WRITE32(acl->naces); | |
1445 | ||
1446 | list_for_each(h, &acl->ace_head) { | |
1447 | ace = list_entry(h, struct nfs4_ace, l_ace); | |
1448 | ||
1449 | if ((buflen -= 4*3) < 0) | |
1450 | goto out_resource; | |
1451 | WRITE32(ace->type); | |
1452 | WRITE32(ace->flag); | |
1453 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); | |
1454 | status = nfsd4_encode_aclname(rqstp, ace->whotype, | |
1455 | ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP, | |
1456 | &p, &buflen); | |
1457 | if (status == nfserr_resource) | |
1458 | goto out_resource; | |
1459 | if (status) | |
1460 | goto out; | |
1461 | } | |
1462 | } | |
1463 | out_acl: | |
1464 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
1465 | if ((buflen -= 4) < 0) | |
1466 | goto out_resource; | |
1467 | WRITE32(aclsupport ? | |
1468 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); | |
1469 | } | |
1470 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
1471 | if ((buflen -= 4) < 0) | |
1472 | goto out_resource; | |
1473 | WRITE32(1); | |
1474 | } | |
1475 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
1476 | if ((buflen -= 4) < 0) | |
1477 | goto out_resource; | |
1478 | WRITE32(1); | |
1479 | } | |
1480 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
1481 | if ((buflen -= 4) < 0) | |
1482 | goto out_resource; | |
1483 | WRITE32(1); | |
1484 | } | |
1485 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
1486 | if ((buflen -= 4) < 0) | |
1487 | goto out_resource; | |
1488 | WRITE32(1); | |
1489 | } | |
1490 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
1491 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; | |
1492 | if (buflen < 0) | |
1493 | goto out_resource; | |
1494 | WRITE32(fhp->fh_handle.fh_size); | |
1495 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); | |
1496 | } | |
1497 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
1498 | if ((buflen -= 8) < 0) | |
1499 | goto out_resource; | |
1500 | WRITE64((u64) stat.ino); | |
1501 | } | |
1502 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
1503 | if ((buflen -= 8) < 0) | |
1504 | goto out_resource; | |
1505 | WRITE64((u64) statfs.f_ffree); | |
1506 | } | |
1507 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
1508 | if ((buflen -= 8) < 0) | |
1509 | goto out_resource; | |
1510 | WRITE64((u64) statfs.f_ffree); | |
1511 | } | |
1512 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
1513 | if ((buflen -= 8) < 0) | |
1514 | goto out_resource; | |
1515 | WRITE64((u64) statfs.f_files); | |
1516 | } | |
1517 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { | |
1518 | if ((buflen -= 4) < 0) | |
1519 | goto out_resource; | |
1520 | WRITE32(1); | |
1521 | } | |
1522 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
1523 | if ((buflen -= 8) < 0) | |
1524 | goto out_resource; | |
1525 | WRITE64(~(u64)0); | |
1526 | } | |
1527 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
1528 | if ((buflen -= 4) < 0) | |
1529 | goto out_resource; | |
1530 | WRITE32(255); | |
1531 | } | |
1532 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
1533 | if ((buflen -= 4) < 0) | |
1534 | goto out_resource; | |
1535 | WRITE32(~(u32) 0); | |
1536 | } | |
1537 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
1538 | if ((buflen -= 8) < 0) | |
1539 | goto out_resource; | |
1540 | WRITE64((u64) NFSSVC_MAXBLKSIZE); | |
1541 | } | |
1542 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
1543 | if ((buflen -= 8) < 0) | |
1544 | goto out_resource; | |
1545 | WRITE64((u64) NFSSVC_MAXBLKSIZE); | |
1546 | } | |
1547 | if (bmval1 & FATTR4_WORD1_MODE) { | |
1548 | if ((buflen -= 4) < 0) | |
1549 | goto out_resource; | |
1550 | WRITE32(stat.mode & S_IALLUGO); | |
1551 | } | |
1552 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
1553 | if ((buflen -= 4) < 0) | |
1554 | goto out_resource; | |
1555 | WRITE32(1); | |
1556 | } | |
1557 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
1558 | if ((buflen -= 4) < 0) | |
1559 | goto out_resource; | |
1560 | WRITE32(stat.nlink); | |
1561 | } | |
1562 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
1563 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); | |
1564 | if (status == nfserr_resource) | |
1565 | goto out_resource; | |
1566 | if (status) | |
1567 | goto out; | |
1568 | } | |
1569 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
1570 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); | |
1571 | if (status == nfserr_resource) | |
1572 | goto out_resource; | |
1573 | if (status) | |
1574 | goto out; | |
1575 | } | |
1576 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
1577 | if ((buflen -= 8) < 0) | |
1578 | goto out_resource; | |
1579 | WRITE32((u32) MAJOR(stat.rdev)); | |
1580 | WRITE32((u32) MINOR(stat.rdev)); | |
1581 | } | |
1582 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
1583 | if ((buflen -= 8) < 0) | |
1584 | goto out_resource; | |
1585 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
1586 | WRITE64(dummy64); | |
1587 | } | |
1588 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
1589 | if ((buflen -= 8) < 0) | |
1590 | goto out_resource; | |
1591 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
1592 | WRITE64(dummy64); | |
1593 | } | |
1594 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
1595 | if ((buflen -= 8) < 0) | |
1596 | goto out_resource; | |
1597 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
1598 | WRITE64(dummy64); | |
1599 | } | |
1600 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
1601 | if ((buflen -= 8) < 0) | |
1602 | goto out_resource; | |
1603 | dummy64 = (u64)stat.blocks << 9; | |
1604 | WRITE64(dummy64); | |
1605 | } | |
1606 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
1607 | if ((buflen -= 12) < 0) | |
1608 | goto out_resource; | |
1609 | WRITE32(0); | |
1610 | WRITE32(stat.atime.tv_sec); | |
1611 | WRITE32(stat.atime.tv_nsec); | |
1612 | } | |
1613 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
1614 | if ((buflen -= 12) < 0) | |
1615 | goto out_resource; | |
1616 | WRITE32(0); | |
1617 | WRITE32(1); | |
1618 | WRITE32(0); | |
1619 | } | |
1620 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
1621 | if ((buflen -= 12) < 0) | |
1622 | goto out_resource; | |
1623 | WRITE32(0); | |
1624 | WRITE32(stat.ctime.tv_sec); | |
1625 | WRITE32(stat.ctime.tv_nsec); | |
1626 | } | |
1627 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
1628 | if ((buflen -= 12) < 0) | |
1629 | goto out_resource; | |
1630 | WRITE32(0); | |
1631 | WRITE32(stat.mtime.tv_sec); | |
1632 | WRITE32(stat.mtime.tv_nsec); | |
1633 | } | |
1634 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
1635 | struct dentry *mnt_pnt, *mnt_root; | |
1636 | ||
1637 | if ((buflen -= 8) < 0) | |
1638 | goto out_resource; | |
1639 | mnt_root = exp->ex_mnt->mnt_root; | |
1640 | if (mnt_root->d_inode == dentry->d_inode) { | |
1641 | mnt_pnt = exp->ex_mnt->mnt_mountpoint; | |
1642 | WRITE64((u64) mnt_pnt->d_inode->i_ino); | |
1643 | } else | |
1644 | WRITE64((u64) stat.ino); | |
1645 | } | |
1646 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
1647 | *countp = p - buffer; | |
1648 | status = nfs_ok; | |
1649 | ||
1650 | out: | |
1651 | nfs4_acl_free(acl); | |
1652 | if (fhp == &tempfh) | |
1653 | fh_put(&tempfh); | |
1654 | return status; | |
1655 | out_nfserr: | |
1656 | status = nfserrno(status); | |
1657 | goto out; | |
1658 | out_resource: | |
1659 | *countp = 0; | |
1660 | status = nfserr_resource; | |
1661 | goto out; | |
1662 | out_serverfault: | |
1663 | status = nfserr_serverfault; | |
1664 | goto out; | |
1665 | } | |
1666 | ||
1667 | static int | |
1668 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, | |
1669 | const char *name, int namlen, u32 *p, int *buflen) | |
1670 | { | |
1671 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
1672 | struct dentry *dentry; | |
1673 | int nfserr; | |
1674 | ||
1675 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
1676 | if (IS_ERR(dentry)) | |
1677 | return nfserrno(PTR_ERR(dentry)); | |
1678 | ||
1679 | exp_get(exp); | |
1680 | if (d_mountpoint(dentry)) { | |
1681 | if (nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp)) { | |
1682 | /* | |
1683 | * -EAGAIN is the only error returned from | |
1684 | * nfsd_cross_mnt() and it indicates that an | |
1685 | * up-call has been initiated to fill in the export | |
1686 | * options on exp. When the answer comes back, | |
1687 | * this call will be retried. | |
1688 | */ | |
1689 | nfserr = nfserr_dropit; | |
1690 | goto out_put; | |
1691 | } | |
1692 | ||
1693 | } | |
1694 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, | |
1695 | cd->rd_rqstp); | |
1696 | out_put: | |
1697 | dput(dentry); | |
1698 | exp_put(exp); | |
1699 | return nfserr; | |
1700 | } | |
1701 | ||
1702 | static u32 * | |
1703 | nfsd4_encode_rdattr_error(u32 *p, int buflen, int nfserr) | |
1704 | { | |
1705 | u32 *attrlenp; | |
1706 | ||
1707 | if (buflen < 6) | |
1708 | return NULL; | |
1709 | *p++ = htonl(2); | |
1710 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
1711 | *p++ = htonl(0); /* bmval1 */ | |
1712 | ||
1713 | attrlenp = p++; | |
1714 | *p++ = nfserr; /* no htonl */ | |
1715 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
1716 | return p; | |
1717 | } | |
1718 | ||
1719 | static int | |
1720 | nfsd4_encode_dirent(struct readdir_cd *ccd, const char *name, int namlen, | |
1721 | loff_t offset, ino_t ino, unsigned int d_type) | |
1722 | { | |
1723 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); | |
1724 | int buflen; | |
1725 | u32 *p = cd->buffer; | |
1726 | int nfserr = nfserr_toosmall; | |
1727 | ||
1728 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
1729 | if (name && isdotent(name, namlen)) { | |
1730 | cd->common.err = nfs_ok; | |
1731 | return 0; | |
1732 | } | |
1733 | ||
1734 | if (cd->offset) | |
1735 | xdr_encode_hyper(cd->offset, (u64) offset); | |
1736 | ||
1737 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); | |
1738 | if (buflen < 0) | |
1739 | goto fail; | |
1740 | ||
1741 | *p++ = xdr_one; /* mark entry present */ | |
1742 | cd->offset = p; /* remember pointer */ | |
1743 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ | |
1744 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
1745 | ||
1746 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen); | |
1747 | switch (nfserr) { | |
1748 | case nfs_ok: | |
1749 | p += buflen; | |
1750 | break; | |
1751 | case nfserr_resource: | |
1752 | nfserr = nfserr_toosmall; | |
1753 | goto fail; | |
1754 | case nfserr_dropit: | |
1755 | goto fail; | |
1756 | default: | |
1757 | /* | |
1758 | * If the client requested the RDATTR_ERROR attribute, | |
1759 | * we stuff the error code into this attribute | |
1760 | * and continue. If this attribute was not requested, | |
1761 | * then in accordance with the spec, we fail the | |
1762 | * entire READDIR operation(!) | |
1763 | */ | |
1764 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
1765 | goto fail; | |
1da177e4 | 1766 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
34081efc FI |
1767 | if (p == NULL) { |
1768 | nfserr = nfserr_toosmall; | |
1da177e4 | 1769 | goto fail; |
34081efc | 1770 | } |
1da177e4 LT |
1771 | } |
1772 | cd->buflen -= (p - cd->buffer); | |
1773 | cd->buffer = p; | |
1774 | cd->common.err = nfs_ok; | |
1775 | return 0; | |
1776 | fail: | |
1777 | cd->common.err = nfserr; | |
1778 | return -EINVAL; | |
1779 | } | |
1780 | ||
1781 | static void | |
1782 | nfsd4_encode_access(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_access *access) | |
1783 | { | |
1784 | ENCODE_HEAD; | |
1785 | ||
1786 | if (!nfserr) { | |
1787 | RESERVE_SPACE(8); | |
1788 | WRITE32(access->ac_supported); | |
1789 | WRITE32(access->ac_resp_access); | |
1790 | ADJUST_ARGS(); | |
1791 | } | |
1792 | } | |
1793 | ||
1794 | static void | |
1795 | nfsd4_encode_close(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_close *close) | |
1796 | { | |
1797 | ENCODE_SEQID_OP_HEAD; | |
1798 | ||
1799 | if (!nfserr) { | |
1800 | RESERVE_SPACE(sizeof(stateid_t)); | |
1801 | WRITE32(close->cl_stateid.si_generation); | |
1802 | WRITEMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
1803 | ADJUST_ARGS(); | |
1804 | } | |
1805 | ENCODE_SEQID_OP_TAIL(close->cl_stateowner); | |
1806 | } | |
1807 | ||
1808 | ||
1809 | static void | |
1810 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_commit *commit) | |
1811 | { | |
1812 | ENCODE_HEAD; | |
1813 | ||
1814 | if (!nfserr) { | |
1815 | RESERVE_SPACE(8); | |
1816 | WRITEMEM(commit->co_verf.data, 8); | |
1817 | ADJUST_ARGS(); | |
1818 | } | |
1819 | } | |
1820 | ||
1821 | static void | |
1822 | nfsd4_encode_create(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_create *create) | |
1823 | { | |
1824 | ENCODE_HEAD; | |
1825 | ||
1826 | if (!nfserr) { | |
1827 | RESERVE_SPACE(32); | |
1828 | WRITECINFO(create->cr_cinfo); | |
1829 | WRITE32(2); | |
1830 | WRITE32(create->cr_bmval[0]); | |
1831 | WRITE32(create->cr_bmval[1]); | |
1832 | ADJUST_ARGS(); | |
1833 | } | |
1834 | } | |
1835 | ||
1836 | static int | |
1837 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_getattr *getattr) | |
1838 | { | |
1839 | struct svc_fh *fhp = getattr->ga_fhp; | |
1840 | int buflen; | |
1841 | ||
1842 | if (nfserr) | |
1843 | return nfserr; | |
1844 | ||
1845 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); | |
1846 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, | |
1847 | resp->p, &buflen, getattr->ga_bmval, | |
1848 | resp->rqstp); | |
1849 | ||
1850 | if (!nfserr) | |
1851 | resp->p += buflen; | |
1852 | return nfserr; | |
1853 | } | |
1854 | ||
1855 | static void | |
1856 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, int nfserr, struct svc_fh *fhp) | |
1857 | { | |
1858 | unsigned int len; | |
1859 | ENCODE_HEAD; | |
1860 | ||
1861 | if (!nfserr) { | |
1862 | len = fhp->fh_handle.fh_size; | |
1863 | RESERVE_SPACE(len + 4); | |
1864 | WRITE32(len); | |
1865 | WRITEMEM(&fhp->fh_handle.fh_base, len); | |
1866 | ADJUST_ARGS(); | |
1867 | } | |
1868 | } | |
1869 | ||
1870 | /* | |
1871 | * Including all fields other than the name, a LOCK4denied structure requires | |
1872 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
1873 | */ | |
1874 | static void | |
1875 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) | |
1876 | { | |
1877 | ENCODE_HEAD; | |
1878 | ||
1879 | RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0)); | |
1880 | WRITE64(ld->ld_start); | |
1881 | WRITE64(ld->ld_length); | |
1882 | WRITE32(ld->ld_type); | |
1883 | if (ld->ld_sop) { | |
1884 | WRITEMEM(&ld->ld_clientid, 8); | |
1885 | WRITE32(ld->ld_sop->so_owner.len); | |
1886 | WRITEMEM(ld->ld_sop->so_owner.data, ld->ld_sop->so_owner.len); | |
1887 | kref_put(&ld->ld_sop->so_ref, nfs4_free_stateowner); | |
1888 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ | |
1889 | WRITE64((u64)0); /* clientid */ | |
1890 | WRITE32(0); /* length of owner name */ | |
1891 | } | |
1892 | ADJUST_ARGS(); | |
1893 | } | |
1894 | ||
1895 | static void | |
1896 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_lock *lock) | |
1897 | { | |
1da177e4 LT |
1898 | ENCODE_SEQID_OP_HEAD; |
1899 | ||
1900 | if (!nfserr) { | |
1901 | RESERVE_SPACE(4 + sizeof(stateid_t)); | |
1902 | WRITE32(lock->lk_resp_stateid.si_generation); | |
1903 | WRITEMEM(&lock->lk_resp_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
1904 | ADJUST_ARGS(); | |
1905 | } else if (nfserr == nfserr_denied) | |
1906 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); | |
1907 | ||
3a65588a | 1908 | ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner); |
1da177e4 LT |
1909 | } |
1910 | ||
1911 | static void | |
1912 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_lockt *lockt) | |
1913 | { | |
1914 | if (nfserr == nfserr_denied) | |
1915 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); | |
1916 | } | |
1917 | ||
1918 | static void | |
1919 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_locku *locku) | |
1920 | { | |
1921 | ENCODE_SEQID_OP_HEAD; | |
1922 | ||
1923 | if (!nfserr) { | |
1924 | RESERVE_SPACE(sizeof(stateid_t)); | |
1925 | WRITE32(locku->lu_stateid.si_generation); | |
1926 | WRITEMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
1927 | ADJUST_ARGS(); | |
1928 | } | |
1929 | ||
1930 | ENCODE_SEQID_OP_TAIL(locku->lu_stateowner); | |
1931 | } | |
1932 | ||
1933 | ||
1934 | static void | |
1935 | nfsd4_encode_link(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_link *link) | |
1936 | { | |
1937 | ENCODE_HEAD; | |
1938 | ||
1939 | if (!nfserr) { | |
1940 | RESERVE_SPACE(20); | |
1941 | WRITECINFO(link->li_cinfo); | |
1942 | ADJUST_ARGS(); | |
1943 | } | |
1944 | } | |
1945 | ||
1946 | ||
1947 | static void | |
1948 | nfsd4_encode_open(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_open *open) | |
1949 | { | |
1950 | ENCODE_SEQID_OP_HEAD; | |
1951 | ||
1952 | if (nfserr) | |
1953 | goto out; | |
1954 | ||
1955 | RESERVE_SPACE(36 + sizeof(stateid_t)); | |
1956 | WRITE32(open->op_stateid.si_generation); | |
1957 | WRITEMEM(&open->op_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
1958 | WRITECINFO(open->op_cinfo); | |
1959 | WRITE32(open->op_rflags); | |
1960 | WRITE32(2); | |
1961 | WRITE32(open->op_bmval[0]); | |
1962 | WRITE32(open->op_bmval[1]); | |
1963 | WRITE32(open->op_delegate_type); | |
1964 | ADJUST_ARGS(); | |
1965 | ||
1966 | switch (open->op_delegate_type) { | |
1967 | case NFS4_OPEN_DELEGATE_NONE: | |
1968 | break; | |
1969 | case NFS4_OPEN_DELEGATE_READ: | |
1970 | RESERVE_SPACE(20 + sizeof(stateid_t)); | |
1971 | WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t)); | |
7b190fec | 1972 | WRITE32(open->op_recall); |
1da177e4 LT |
1973 | |
1974 | /* | |
1975 | * TODO: ACE's in delegations | |
1976 | */ | |
1977 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
1978 | WRITE32(0); | |
1979 | WRITE32(0); | |
1980 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
1981 | ADJUST_ARGS(); | |
1982 | break; | |
1983 | case NFS4_OPEN_DELEGATE_WRITE: | |
1984 | RESERVE_SPACE(32 + sizeof(stateid_t)); | |
1985 | WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t)); | |
1986 | WRITE32(0); | |
1987 | ||
1988 | /* | |
1989 | * TODO: space_limit's in delegations | |
1990 | */ | |
1991 | WRITE32(NFS4_LIMIT_SIZE); | |
1992 | WRITE32(~(u32)0); | |
1993 | WRITE32(~(u32)0); | |
1994 | ||
1995 | /* | |
1996 | * TODO: ACE's in delegations | |
1997 | */ | |
1998 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
1999 | WRITE32(0); | |
2000 | WRITE32(0); | |
2001 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2002 | ADJUST_ARGS(); | |
2003 | break; | |
2004 | default: | |
2005 | BUG(); | |
2006 | } | |
2007 | /* XXX save filehandle here */ | |
2008 | out: | |
2009 | ENCODE_SEQID_OP_TAIL(open->op_stateowner); | |
2010 | } | |
2011 | ||
2012 | static void | |
2013 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_open_confirm *oc) | |
2014 | { | |
2015 | ENCODE_SEQID_OP_HEAD; | |
2016 | ||
2017 | if (!nfserr) { | |
2018 | RESERVE_SPACE(sizeof(stateid_t)); | |
2019 | WRITE32(oc->oc_resp_stateid.si_generation); | |
2020 | WRITEMEM(&oc->oc_resp_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
2021 | ADJUST_ARGS(); | |
2022 | } | |
2023 | ||
2024 | ENCODE_SEQID_OP_TAIL(oc->oc_stateowner); | |
2025 | } | |
2026 | ||
2027 | static void | |
2028 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_open_downgrade *od) | |
2029 | { | |
2030 | ENCODE_SEQID_OP_HEAD; | |
2031 | ||
2032 | if (!nfserr) { | |
2033 | RESERVE_SPACE(sizeof(stateid_t)); | |
2034 | WRITE32(od->od_stateid.si_generation); | |
2035 | WRITEMEM(&od->od_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
2036 | ADJUST_ARGS(); | |
2037 | } | |
2038 | ||
2039 | ENCODE_SEQID_OP_TAIL(od->od_stateowner); | |
2040 | } | |
2041 | ||
2042 | static int | |
2043 | nfsd4_encode_read(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_read *read) | |
2044 | { | |
2045 | u32 eof; | |
2046 | int v, pn; | |
2047 | unsigned long maxcount; | |
2048 | long len; | |
2049 | ENCODE_HEAD; | |
2050 | ||
2051 | if (nfserr) | |
2052 | return nfserr; | |
2053 | if (resp->xbuf->page_len) | |
2054 | return nfserr_resource; | |
2055 | ||
2056 | RESERVE_SPACE(8); /* eof flag and byte count */ | |
2057 | ||
2058 | maxcount = NFSSVC_MAXBLKSIZE; | |
2059 | if (maxcount > read->rd_length) | |
2060 | maxcount = read->rd_length; | |
2061 | ||
2062 | len = maxcount; | |
2063 | v = 0; | |
2064 | while (len > 0) { | |
2065 | pn = resp->rqstp->rq_resused; | |
2066 | svc_take_page(resp->rqstp); | |
2067 | read->rd_iov[v].iov_base = page_address(resp->rqstp->rq_respages[pn]); | |
2068 | read->rd_iov[v].iov_len = len < PAGE_SIZE ? len : PAGE_SIZE; | |
2069 | v++; | |
2070 | len -= PAGE_SIZE; | |
2071 | } | |
2072 | read->rd_vlen = v; | |
2073 | ||
2074 | nfserr = nfsd_read(read->rd_rqstp, read->rd_fhp, read->rd_filp, | |
2075 | read->rd_offset, read->rd_iov, read->rd_vlen, | |
2076 | &maxcount); | |
2077 | ||
2078 | if (nfserr == nfserr_symlink) | |
2079 | nfserr = nfserr_inval; | |
2080 | if (nfserr) | |
2081 | return nfserr; | |
2082 | eof = (read->rd_offset + maxcount >= read->rd_fhp->fh_dentry->d_inode->i_size); | |
2083 | ||
2084 | WRITE32(eof); | |
2085 | WRITE32(maxcount); | |
2086 | ADJUST_ARGS(); | |
6ed6decc N |
2087 | resp->xbuf->head[0].iov_len = (char*)p |
2088 | - (char*)resp->xbuf->head[0].iov_base; | |
1da177e4 LT |
2089 | resp->xbuf->page_len = maxcount; |
2090 | ||
6ed6decc N |
2091 | /* Use rest of head for padding and remaining ops: */ |
2092 | resp->rqstp->rq_restailpage = 0; | |
2093 | resp->xbuf->tail[0].iov_base = p; | |
1da177e4 | 2094 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2095 | if (maxcount&3) { |
6ed6decc N |
2096 | RESERVE_SPACE(4); |
2097 | WRITE32(0); | |
1da177e4 LT |
2098 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2099 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2100 | ADJUST_ARGS(); |
1da177e4 LT |
2101 | } |
2102 | return 0; | |
2103 | } | |
2104 | ||
2105 | static int | |
2106 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_readlink *readlink) | |
2107 | { | |
2108 | int maxcount; | |
2109 | char *page; | |
2110 | ENCODE_HEAD; | |
2111 | ||
2112 | if (nfserr) | |
2113 | return nfserr; | |
2114 | if (resp->xbuf->page_len) | |
2115 | return nfserr_resource; | |
2116 | ||
2117 | svc_take_page(resp->rqstp); | |
2118 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); | |
2119 | ||
2120 | maxcount = PAGE_SIZE; | |
2121 | RESERVE_SPACE(4); | |
2122 | ||
2123 | /* | |
2124 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
2125 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
2126 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
2127 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
2128 | */ | |
2129 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); | |
2130 | if (nfserr == nfserr_isdir) | |
2131 | return nfserr_inval; | |
2132 | if (nfserr) | |
2133 | return nfserr; | |
2134 | ||
2135 | WRITE32(maxcount); | |
2136 | ADJUST_ARGS(); | |
6ed6decc N |
2137 | resp->xbuf->head[0].iov_len = (char*)p |
2138 | - (char*)resp->xbuf->head[0].iov_base; | |
2139 | resp->xbuf->page_len = maxcount; | |
1da177e4 | 2140 | |
6ed6decc N |
2141 | /* Use rest of head for padding and remaining ops: */ |
2142 | resp->rqstp->rq_restailpage = 0; | |
2143 | resp->xbuf->tail[0].iov_base = p; | |
1da177e4 | 2144 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2145 | if (maxcount&3) { |
6ed6decc N |
2146 | RESERVE_SPACE(4); |
2147 | WRITE32(0); | |
1da177e4 LT |
2148 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2149 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2150 | ADJUST_ARGS(); |
1da177e4 LT |
2151 | } |
2152 | return 0; | |
2153 | } | |
2154 | ||
2155 | static int | |
2156 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_readdir *readdir) | |
2157 | { | |
2158 | int maxcount; | |
2159 | loff_t offset; | |
bb6e8a9f | 2160 | u32 *page, *savep, *tailbase; |
1da177e4 LT |
2161 | ENCODE_HEAD; |
2162 | ||
2163 | if (nfserr) | |
2164 | return nfserr; | |
2165 | if (resp->xbuf->page_len) | |
2166 | return nfserr_resource; | |
2167 | ||
2168 | RESERVE_SPACE(8); /* verifier */ | |
2169 | savep = p; | |
2170 | ||
2171 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
2172 | WRITE32(0); | |
2173 | WRITE32(0); | |
2174 | ADJUST_ARGS(); | |
2175 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; | |
bb6e8a9f | 2176 | tailbase = p; |
1da177e4 LT |
2177 | |
2178 | maxcount = PAGE_SIZE; | |
2179 | if (maxcount > readdir->rd_maxcount) | |
2180 | maxcount = readdir->rd_maxcount; | |
2181 | ||
2182 | /* | |
2183 | * Convert from bytes to words, account for the two words already | |
2184 | * written, make sure to leave two words at the end for the next | |
2185 | * pointer and eof field. | |
2186 | */ | |
2187 | maxcount = (maxcount >> 2) - 4; | |
2188 | if (maxcount < 0) { | |
2189 | nfserr = nfserr_toosmall; | |
2190 | goto err_no_verf; | |
2191 | } | |
2192 | ||
2193 | svc_take_page(resp->rqstp); | |
2194 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); | |
2195 | readdir->common.err = 0; | |
2196 | readdir->buflen = maxcount; | |
2197 | readdir->buffer = page; | |
2198 | readdir->offset = NULL; | |
2199 | ||
2200 | offset = readdir->rd_cookie; | |
2201 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
2202 | &offset, | |
2203 | &readdir->common, nfsd4_encode_dirent); | |
2204 | if (nfserr == nfs_ok && | |
2205 | readdir->common.err == nfserr_toosmall && | |
2206 | readdir->buffer == page) | |
2207 | nfserr = nfserr_toosmall; | |
2208 | if (nfserr == nfserr_symlink) | |
2209 | nfserr = nfserr_notdir; | |
2210 | if (nfserr) | |
2211 | goto err_no_verf; | |
2212 | ||
2213 | if (readdir->offset) | |
2214 | xdr_encode_hyper(readdir->offset, offset); | |
2215 | ||
2216 | p = readdir->buffer; | |
2217 | *p++ = 0; /* no more entries */ | |
2218 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
2219 | resp->xbuf->page_len = ((char*)p) - (char*)page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); | |
2220 | ||
bb6e8a9f N |
2221 | /* Use rest of head for padding and remaining ops: */ |
2222 | resp->rqstp->rq_restailpage = 0; | |
2223 | resp->xbuf->tail[0].iov_base = tailbase; | |
1da177e4 LT |
2224 | resp->xbuf->tail[0].iov_len = 0; |
2225 | resp->p = resp->xbuf->tail[0].iov_base; | |
bb6e8a9f | 2226 | resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; |
1da177e4 LT |
2227 | |
2228 | return 0; | |
2229 | err_no_verf: | |
2230 | p = savep; | |
2231 | ADJUST_ARGS(); | |
2232 | return nfserr; | |
2233 | } | |
2234 | ||
2235 | static void | |
2236 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_remove *remove) | |
2237 | { | |
2238 | ENCODE_HEAD; | |
2239 | ||
2240 | if (!nfserr) { | |
2241 | RESERVE_SPACE(20); | |
2242 | WRITECINFO(remove->rm_cinfo); | |
2243 | ADJUST_ARGS(); | |
2244 | } | |
2245 | } | |
2246 | ||
2247 | static void | |
2248 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_rename *rename) | |
2249 | { | |
2250 | ENCODE_HEAD; | |
2251 | ||
2252 | if (!nfserr) { | |
2253 | RESERVE_SPACE(40); | |
2254 | WRITECINFO(rename->rn_sinfo); | |
2255 | WRITECINFO(rename->rn_tinfo); | |
2256 | ADJUST_ARGS(); | |
2257 | } | |
2258 | } | |
2259 | ||
2260 | /* | |
2261 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
2262 | * regardless of the error status. | |
2263 | */ | |
2264 | static void | |
2265 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_setattr *setattr) | |
2266 | { | |
2267 | ENCODE_HEAD; | |
2268 | ||
2269 | RESERVE_SPACE(12); | |
2270 | if (nfserr) { | |
2271 | WRITE32(2); | |
2272 | WRITE32(0); | |
2273 | WRITE32(0); | |
2274 | } | |
2275 | else { | |
2276 | WRITE32(2); | |
2277 | WRITE32(setattr->sa_bmval[0]); | |
2278 | WRITE32(setattr->sa_bmval[1]); | |
2279 | } | |
2280 | ADJUST_ARGS(); | |
2281 | } | |
2282 | ||
2283 | static void | |
2284 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_setclientid *scd) | |
2285 | { | |
2286 | ENCODE_HEAD; | |
2287 | ||
2288 | if (!nfserr) { | |
2289 | RESERVE_SPACE(8 + sizeof(nfs4_verifier)); | |
2290 | WRITEMEM(&scd->se_clientid, 8); | |
2291 | WRITEMEM(&scd->se_confirm, sizeof(nfs4_verifier)); | |
2292 | ADJUST_ARGS(); | |
2293 | } | |
2294 | else if (nfserr == nfserr_clid_inuse) { | |
2295 | RESERVE_SPACE(8); | |
2296 | WRITE32(0); | |
2297 | WRITE32(0); | |
2298 | ADJUST_ARGS(); | |
2299 | } | |
2300 | } | |
2301 | ||
2302 | static void | |
2303 | nfsd4_encode_write(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_write *write) | |
2304 | { | |
2305 | ENCODE_HEAD; | |
2306 | ||
2307 | if (!nfserr) { | |
2308 | RESERVE_SPACE(16); | |
2309 | WRITE32(write->wr_bytes_written); | |
2310 | WRITE32(write->wr_how_written); | |
2311 | WRITEMEM(write->wr_verifier.data, 8); | |
2312 | ADJUST_ARGS(); | |
2313 | } | |
2314 | } | |
2315 | ||
2316 | void | |
2317 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
2318 | { | |
2319 | u32 *statp; | |
2320 | ENCODE_HEAD; | |
2321 | ||
2322 | RESERVE_SPACE(8); | |
2323 | WRITE32(op->opnum); | |
2324 | statp = p++; /* to be backfilled at the end */ | |
2325 | ADJUST_ARGS(); | |
2326 | ||
2327 | switch (op->opnum) { | |
2328 | case OP_ACCESS: | |
2329 | nfsd4_encode_access(resp, op->status, &op->u.access); | |
2330 | break; | |
2331 | case OP_CLOSE: | |
2332 | nfsd4_encode_close(resp, op->status, &op->u.close); | |
2333 | break; | |
2334 | case OP_COMMIT: | |
2335 | nfsd4_encode_commit(resp, op->status, &op->u.commit); | |
2336 | break; | |
2337 | case OP_CREATE: | |
2338 | nfsd4_encode_create(resp, op->status, &op->u.create); | |
2339 | break; | |
2340 | case OP_DELEGRETURN: | |
2341 | break; | |
2342 | case OP_GETATTR: | |
2343 | op->status = nfsd4_encode_getattr(resp, op->status, &op->u.getattr); | |
2344 | break; | |
2345 | case OP_GETFH: | |
2346 | nfsd4_encode_getfh(resp, op->status, op->u.getfh); | |
2347 | break; | |
2348 | case OP_LINK: | |
2349 | nfsd4_encode_link(resp, op->status, &op->u.link); | |
2350 | break; | |
2351 | case OP_LOCK: | |
2352 | nfsd4_encode_lock(resp, op->status, &op->u.lock); | |
2353 | break; | |
2354 | case OP_LOCKT: | |
2355 | nfsd4_encode_lockt(resp, op->status, &op->u.lockt); | |
2356 | break; | |
2357 | case OP_LOCKU: | |
2358 | nfsd4_encode_locku(resp, op->status, &op->u.locku); | |
2359 | break; | |
2360 | case OP_LOOKUP: | |
2361 | break; | |
2362 | case OP_LOOKUPP: | |
2363 | break; | |
2364 | case OP_NVERIFY: | |
2365 | break; | |
2366 | case OP_OPEN: | |
2367 | nfsd4_encode_open(resp, op->status, &op->u.open); | |
2368 | break; | |
2369 | case OP_OPEN_CONFIRM: | |
2370 | nfsd4_encode_open_confirm(resp, op->status, &op->u.open_confirm); | |
2371 | break; | |
2372 | case OP_OPEN_DOWNGRADE: | |
2373 | nfsd4_encode_open_downgrade(resp, op->status, &op->u.open_downgrade); | |
2374 | break; | |
2375 | case OP_PUTFH: | |
2376 | break; | |
2377 | case OP_PUTROOTFH: | |
2378 | break; | |
2379 | case OP_READ: | |
2380 | op->status = nfsd4_encode_read(resp, op->status, &op->u.read); | |
2381 | break; | |
2382 | case OP_READDIR: | |
2383 | op->status = nfsd4_encode_readdir(resp, op->status, &op->u.readdir); | |
2384 | break; | |
2385 | case OP_READLINK: | |
2386 | op->status = nfsd4_encode_readlink(resp, op->status, &op->u.readlink); | |
2387 | break; | |
2388 | case OP_REMOVE: | |
2389 | nfsd4_encode_remove(resp, op->status, &op->u.remove); | |
2390 | break; | |
2391 | case OP_RENAME: | |
2392 | nfsd4_encode_rename(resp, op->status, &op->u.rename); | |
2393 | break; | |
2394 | case OP_RENEW: | |
2395 | break; | |
2396 | case OP_RESTOREFH: | |
2397 | break; | |
2398 | case OP_SAVEFH: | |
2399 | break; | |
2400 | case OP_SETATTR: | |
2401 | nfsd4_encode_setattr(resp, op->status, &op->u.setattr); | |
2402 | break; | |
2403 | case OP_SETCLIENTID: | |
2404 | nfsd4_encode_setclientid(resp, op->status, &op->u.setclientid); | |
2405 | break; | |
2406 | case OP_SETCLIENTID_CONFIRM: | |
2407 | break; | |
2408 | case OP_VERIFY: | |
2409 | break; | |
2410 | case OP_WRITE: | |
2411 | nfsd4_encode_write(resp, op->status, &op->u.write); | |
2412 | break; | |
2413 | case OP_RELEASE_LOCKOWNER: | |
2414 | break; | |
2415 | default: | |
2416 | break; | |
2417 | } | |
2418 | ||
2419 | /* | |
2420 | * Note: We write the status directly, instead of using WRITE32(), | |
2421 | * since it is already in network byte order. | |
2422 | */ | |
2423 | *statp = op->status; | |
2424 | } | |
2425 | ||
2426 | /* | |
2427 | * Encode the reply stored in the stateowner reply cache | |
2428 | * | |
2429 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
2430 | * previously sent already encoded operation. | |
2431 | * | |
2432 | * called with nfs4_lock_state() held | |
2433 | */ | |
2434 | void | |
2435 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
2436 | { | |
2437 | ENCODE_HEAD; | |
2438 | struct nfs4_replay *rp = op->replay; | |
2439 | ||
2440 | BUG_ON(!rp); | |
2441 | ||
2442 | RESERVE_SPACE(8); | |
2443 | WRITE32(op->opnum); | |
2444 | *p++ = rp->rp_status; /* already xdr'ed */ | |
2445 | ADJUST_ARGS(); | |
2446 | ||
2447 | RESERVE_SPACE(rp->rp_buflen); | |
2448 | WRITEMEM(rp->rp_buf, rp->rp_buflen); | |
2449 | ADJUST_ARGS(); | |
2450 | } | |
2451 | ||
2452 | /* | |
2453 | * END OF "GENERIC" ENCODE ROUTINES. | |
2454 | */ | |
2455 | ||
2456 | int | |
2457 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, u32 *p, void *dummy) | |
2458 | { | |
2459 | return xdr_ressize_check(rqstp, p); | |
2460 | } | |
2461 | ||
2462 | void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args) | |
2463 | { | |
2464 | if (args->ops != args->iops) { | |
2465 | kfree(args->ops); | |
2466 | args->ops = args->iops; | |
2467 | } | |
f99d49ad JJ |
2468 | kfree(args->tmpp); |
2469 | args->tmpp = NULL; | |
1da177e4 LT |
2470 | while (args->to_free) { |
2471 | struct tmpbuf *tb = args->to_free; | |
2472 | args->to_free = tb->next; | |
2473 | tb->release(tb->buf); | |
2474 | kfree(tb); | |
2475 | } | |
2476 | } | |
2477 | ||
2478 | int | |
2479 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, u32 *p, struct nfsd4_compoundargs *args) | |
2480 | { | |
2481 | int status; | |
2482 | ||
2483 | args->p = p; | |
2484 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
2485 | args->pagelist = rqstp->rq_arg.pages; | |
2486 | args->pagelen = rqstp->rq_arg.page_len; | |
2487 | args->tmpp = NULL; | |
2488 | args->to_free = NULL; | |
2489 | args->ops = args->iops; | |
2490 | args->rqstp = rqstp; | |
2491 | ||
2492 | status = nfsd4_decode_compound(args); | |
2493 | if (status) { | |
2494 | nfsd4_release_compoundargs(args); | |
2495 | } | |
2496 | return !status; | |
2497 | } | |
2498 | ||
2499 | int | |
2500 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, u32 *p, struct nfsd4_compoundres *resp) | |
2501 | { | |
2502 | /* | |
2503 | * All that remains is to write the tag and operation count... | |
2504 | */ | |
2505 | struct kvec *iov; | |
2506 | p = resp->tagp; | |
2507 | *p++ = htonl(resp->taglen); | |
2508 | memcpy(p, resp->tag, resp->taglen); | |
2509 | p += XDR_QUADLEN(resp->taglen); | |
2510 | *p++ = htonl(resp->opcnt); | |
2511 | ||
2512 | if (rqstp->rq_res.page_len) | |
2513 | iov = &rqstp->rq_res.tail[0]; | |
2514 | else | |
2515 | iov = &rqstp->rq_res.head[0]; | |
2516 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; | |
2517 | BUG_ON(iov->iov_len > PAGE_SIZE); | |
2518 | return 1; | |
2519 | } | |
2520 | ||
2521 | /* | |
2522 | * Local variables: | |
2523 | * c-basic-offset: 8 | |
2524 | * End: | |
2525 | */ |