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Commit | Line | Data |
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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 | ||
42ca0993 BF |
63 | /* |
64 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing | |
65 | * directory in order to indicate to the client that a filesystem boundary is present | |
66 | * We use a fixed fsid for a referral | |
67 | */ | |
68 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL | |
69 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL | |
70 | ||
1da177e4 LT |
71 | static int |
72 | check_filename(char *str, int len, int err) | |
73 | { | |
74 | int i; | |
75 | ||
76 | if (len == 0) | |
77 | return nfserr_inval; | |
78 | if (isdotent(str, len)) | |
79 | return err; | |
80 | for (i = 0; i < len; i++) | |
81 | if (str[i] == '/') | |
82 | return err; | |
83 | return 0; | |
84 | } | |
85 | ||
86 | /* | |
87 | * START OF "GENERIC" DECODE ROUTINES. | |
88 | * These may look a little ugly since they are imported from a "generic" | |
89 | * set of XDR encode/decode routines which are intended to be shared by | |
90 | * all of our NFSv4 implementations (OpenBSD, MacOS X...). | |
91 | * | |
92 | * If the pain of reading these is too great, it should be a straightforward | |
93 | * task to translate them into Linux-specific versions which are more | |
94 | * consistent with the style used in NFSv2/v3... | |
95 | */ | |
96 | #define DECODE_HEAD \ | |
97 | u32 *p; \ | |
98 | int status | |
99 | #define DECODE_TAIL \ | |
100 | status = 0; \ | |
101 | out: \ | |
102 | return status; \ | |
103 | xdr_error: \ | |
104 | printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \ | |
105 | status = nfserr_bad_xdr; \ | |
106 | goto out | |
107 | ||
108 | #define READ32(x) (x) = ntohl(*p++) | |
109 | #define READ64(x) do { \ | |
110 | (x) = (u64)ntohl(*p++) << 32; \ | |
111 | (x) |= ntohl(*p++); \ | |
112 | } while (0) | |
113 | #define READTIME(x) do { \ | |
114 | p++; \ | |
115 | (x) = ntohl(*p++); \ | |
116 | p++; \ | |
117 | } while (0) | |
118 | #define READMEM(x,nbytes) do { \ | |
119 | x = (char *)p; \ | |
120 | p += XDR_QUADLEN(nbytes); \ | |
121 | } while (0) | |
122 | #define SAVEMEM(x,nbytes) do { \ | |
123 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
124 | savemem(argp, p, nbytes) : \ | |
125 | (char *)p)) { \ | |
126 | printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \ | |
127 | goto xdr_error; \ | |
128 | } \ | |
129 | p += XDR_QUADLEN(nbytes); \ | |
130 | } while (0) | |
131 | #define COPYMEM(x,nbytes) do { \ | |
132 | memcpy((x), p, nbytes); \ | |
133 | p += XDR_QUADLEN(nbytes); \ | |
134 | } while (0) | |
135 | ||
136 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ | |
137 | #define READ_BUF(nbytes) do { \ | |
138 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ | |
139 | p = argp->p; \ | |
140 | argp->p += XDR_QUADLEN(nbytes); \ | |
141 | } else if (!(p = read_buf(argp, nbytes))) { \ | |
142 | printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \ | |
143 | goto xdr_error; \ | |
144 | } \ | |
145 | } while (0) | |
146 | ||
fd39ca9a | 147 | static u32 *read_buf(struct nfsd4_compoundargs *argp, int nbytes) |
1da177e4 LT |
148 | { |
149 | /* We want more bytes than seem to be available. | |
150 | * Maybe we need a new page, maybe we have just run out | |
151 | */ | |
152 | int avail = (char*)argp->end - (char*)argp->p; | |
153 | u32 *p; | |
154 | if (avail + argp->pagelen < nbytes) | |
155 | return NULL; | |
156 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ | |
157 | return NULL; | |
158 | /* ok, we can do it with the current plus the next page */ | |
159 | if (nbytes <= sizeof(argp->tmp)) | |
160 | p = argp->tmp; | |
161 | else { | |
f99d49ad | 162 | kfree(argp->tmpp); |
1da177e4 LT |
163 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
164 | if (!p) | |
165 | return NULL; | |
166 | ||
167 | } | |
168 | memcpy(p, argp->p, avail); | |
169 | /* step to next page */ | |
170 | argp->p = page_address(argp->pagelist[0]); | |
171 | argp->pagelist++; | |
172 | if (argp->pagelen < PAGE_SIZE) { | |
173 | argp->end = p + (argp->pagelen>>2); | |
174 | argp->pagelen = 0; | |
175 | } else { | |
176 | argp->end = p + (PAGE_SIZE>>2); | |
177 | argp->pagelen -= PAGE_SIZE; | |
178 | } | |
179 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); | |
180 | argp->p += XDR_QUADLEN(nbytes - avail); | |
181 | return p; | |
182 | } | |
183 | ||
184 | static int | |
185 | defer_free(struct nfsd4_compoundargs *argp, | |
186 | void (*release)(const void *), void *p) | |
187 | { | |
188 | struct tmpbuf *tb; | |
189 | ||
190 | tb = kmalloc(sizeof(*tb), GFP_KERNEL); | |
191 | if (!tb) | |
192 | return -ENOMEM; | |
193 | tb->buf = p; | |
194 | tb->release = release; | |
195 | tb->next = argp->to_free; | |
196 | argp->to_free = tb; | |
197 | return 0; | |
198 | } | |
199 | ||
fd39ca9a | 200 | static char *savemem(struct nfsd4_compoundargs *argp, u32 *p, int nbytes) |
1da177e4 LT |
201 | { |
202 | void *new = NULL; | |
203 | if (p == argp->tmp) { | |
204 | new = kmalloc(nbytes, GFP_KERNEL); | |
205 | if (!new) return NULL; | |
206 | p = new; | |
207 | memcpy(p, argp->tmp, nbytes); | |
208 | } else { | |
73dff8be | 209 | BUG_ON(p != argp->tmpp); |
1da177e4 LT |
210 | argp->tmpp = NULL; |
211 | } | |
212 | if (defer_free(argp, kfree, p)) { | |
213 | kfree(new); | |
214 | return NULL; | |
215 | } else | |
216 | return (char *)p; | |
217 | } | |
218 | ||
219 | ||
220 | static int | |
221 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) | |
222 | { | |
223 | u32 bmlen; | |
224 | DECODE_HEAD; | |
225 | ||
226 | bmval[0] = 0; | |
227 | bmval[1] = 0; | |
228 | ||
229 | READ_BUF(4); | |
230 | READ32(bmlen); | |
231 | if (bmlen > 1000) | |
232 | goto xdr_error; | |
233 | ||
234 | READ_BUF(bmlen << 2); | |
235 | if (bmlen > 0) | |
236 | READ32(bmval[0]); | |
237 | if (bmlen > 1) | |
238 | READ32(bmval[1]); | |
239 | ||
240 | DECODE_TAIL; | |
241 | } | |
242 | ||
243 | static int | |
244 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, struct iattr *iattr, | |
245 | struct nfs4_acl **acl) | |
246 | { | |
247 | int expected_len, len = 0; | |
248 | u32 dummy32; | |
249 | char *buf; | |
250 | ||
251 | DECODE_HEAD; | |
252 | iattr->ia_valid = 0; | |
253 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
254 | return status; | |
255 | ||
256 | /* | |
257 | * According to spec, unsupported attributes return ERR_NOTSUPP; | |
258 | * read-only attributes return ERR_INVAL. | |
259 | */ | |
260 | if ((bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) || (bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1)) | |
261 | return nfserr_attrnotsupp; | |
262 | if ((bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0) || (bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1)) | |
263 | return nfserr_inval; | |
264 | ||
265 | READ_BUF(4); | |
266 | READ32(expected_len); | |
267 | ||
268 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
269 | READ_BUF(8); | |
270 | len += 8; | |
271 | READ64(iattr->ia_size); | |
272 | iattr->ia_valid |= ATTR_SIZE; | |
273 | } | |
274 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
275 | int nace, i; | |
276 | struct nfs4_ace ace; | |
277 | ||
278 | READ_BUF(4); len += 4; | |
279 | READ32(nace); | |
280 | ||
281 | *acl = nfs4_acl_new(); | |
282 | if (*acl == NULL) { | |
283 | status = -ENOMEM; | |
284 | goto out_nfserr; | |
285 | } | |
286 | defer_free(argp, (void (*)(const void *))nfs4_acl_free, *acl); | |
287 | ||
288 | for (i = 0; i < nace; i++) { | |
289 | READ_BUF(16); len += 16; | |
290 | READ32(ace.type); | |
291 | READ32(ace.flag); | |
292 | READ32(ace.access_mask); | |
293 | READ32(dummy32); | |
294 | READ_BUF(dummy32); | |
295 | len += XDR_QUADLEN(dummy32) << 2; | |
296 | READMEM(buf, dummy32); | |
297 | ace.whotype = nfs4_acl_get_whotype(buf, dummy32); | |
298 | status = 0; | |
299 | if (ace.whotype != NFS4_ACL_WHO_NAMED) | |
300 | ace.who = 0; | |
301 | else if (ace.flag & NFS4_ACE_IDENTIFIER_GROUP) | |
302 | status = nfsd_map_name_to_gid(argp->rqstp, | |
303 | buf, dummy32, &ace.who); | |
304 | else | |
305 | status = nfsd_map_name_to_uid(argp->rqstp, | |
306 | buf, dummy32, &ace.who); | |
307 | if (status) | |
308 | goto out_nfserr; | |
b905b7b0 N |
309 | status = nfs4_acl_add_ace(*acl, ace.type, ace.flag, |
310 | ace.access_mask, ace.whotype, ace.who); | |
311 | if (status) | |
1da177e4 | 312 | goto out_nfserr; |
1da177e4 LT |
313 | } |
314 | } else | |
315 | *acl = NULL; | |
316 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
317 | READ_BUF(4); | |
318 | len += 4; | |
319 | READ32(iattr->ia_mode); | |
320 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); | |
321 | iattr->ia_valid |= ATTR_MODE; | |
322 | } | |
323 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
324 | READ_BUF(4); | |
325 | len += 4; | |
326 | READ32(dummy32); | |
327 | READ_BUF(dummy32); | |
328 | len += (XDR_QUADLEN(dummy32) << 2); | |
329 | READMEM(buf, dummy32); | |
330 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) | |
331 | goto out_nfserr; | |
332 | iattr->ia_valid |= ATTR_UID; | |
333 | } | |
334 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
335 | READ_BUF(4); | |
336 | len += 4; | |
337 | READ32(dummy32); | |
338 | READ_BUF(dummy32); | |
339 | len += (XDR_QUADLEN(dummy32) << 2); | |
340 | READMEM(buf, dummy32); | |
341 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) | |
342 | goto out_nfserr; | |
343 | iattr->ia_valid |= ATTR_GID; | |
344 | } | |
345 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
346 | READ_BUF(4); | |
347 | len += 4; | |
348 | READ32(dummy32); | |
349 | switch (dummy32) { | |
350 | case NFS4_SET_TO_CLIENT_TIME: | |
351 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
352 | all 32 bits of 'nseconds'. */ | |
353 | READ_BUF(12); | |
354 | len += 12; | |
355 | READ32(dummy32); | |
356 | if (dummy32) | |
357 | return nfserr_inval; | |
358 | READ32(iattr->ia_atime.tv_sec); | |
359 | READ32(iattr->ia_atime.tv_nsec); | |
360 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) | |
361 | return nfserr_inval; | |
362 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); | |
363 | break; | |
364 | case NFS4_SET_TO_SERVER_TIME: | |
365 | iattr->ia_valid |= ATTR_ATIME; | |
366 | break; | |
367 | default: | |
368 | goto xdr_error; | |
369 | } | |
370 | } | |
371 | if (bmval[1] & FATTR4_WORD1_TIME_METADATA) { | |
372 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
373 | all 32 bits of 'nseconds'. */ | |
374 | READ_BUF(12); | |
375 | len += 12; | |
376 | READ32(dummy32); | |
377 | if (dummy32) | |
378 | return nfserr_inval; | |
379 | READ32(iattr->ia_ctime.tv_sec); | |
380 | READ32(iattr->ia_ctime.tv_nsec); | |
381 | if (iattr->ia_ctime.tv_nsec >= (u32)1000000000) | |
382 | return nfserr_inval; | |
383 | iattr->ia_valid |= ATTR_CTIME; | |
384 | } | |
385 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { | |
386 | READ_BUF(4); | |
387 | len += 4; | |
388 | READ32(dummy32); | |
389 | switch (dummy32) { | |
390 | case NFS4_SET_TO_CLIENT_TIME: | |
391 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
392 | all 32 bits of 'nseconds'. */ | |
393 | READ_BUF(12); | |
394 | len += 12; | |
395 | READ32(dummy32); | |
396 | if (dummy32) | |
397 | return nfserr_inval; | |
398 | READ32(iattr->ia_mtime.tv_sec); | |
399 | READ32(iattr->ia_mtime.tv_nsec); | |
400 | if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) | |
401 | return nfserr_inval; | |
402 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); | |
403 | break; | |
404 | case NFS4_SET_TO_SERVER_TIME: | |
405 | iattr->ia_valid |= ATTR_MTIME; | |
406 | break; | |
407 | default: | |
408 | goto xdr_error; | |
409 | } | |
410 | } | |
411 | if (len != expected_len) | |
412 | goto xdr_error; | |
413 | ||
414 | DECODE_TAIL; | |
415 | ||
416 | out_nfserr: | |
417 | status = nfserrno(status); | |
418 | goto out; | |
419 | } | |
420 | ||
421 | static int | |
422 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) | |
423 | { | |
424 | DECODE_HEAD; | |
425 | ||
426 | READ_BUF(4); | |
427 | READ32(access->ac_req_access); | |
428 | ||
429 | DECODE_TAIL; | |
430 | } | |
431 | ||
432 | static int | |
433 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) | |
434 | { | |
435 | DECODE_HEAD; | |
436 | ||
437 | close->cl_stateowner = NULL; | |
438 | READ_BUF(4 + sizeof(stateid_t)); | |
439 | READ32(close->cl_seqid); | |
440 | READ32(close->cl_stateid.si_generation); | |
441 | COPYMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
442 | ||
443 | DECODE_TAIL; | |
444 | } | |
445 | ||
446 | ||
447 | static int | |
448 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) | |
449 | { | |
450 | DECODE_HEAD; | |
451 | ||
452 | READ_BUF(12); | |
453 | READ64(commit->co_offset); | |
454 | READ32(commit->co_count); | |
455 | ||
456 | DECODE_TAIL; | |
457 | } | |
458 | ||
459 | static int | |
460 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) | |
461 | { | |
462 | DECODE_HEAD; | |
463 | ||
464 | READ_BUF(4); | |
465 | READ32(create->cr_type); | |
466 | switch (create->cr_type) { | |
467 | case NF4LNK: | |
468 | READ_BUF(4); | |
469 | READ32(create->cr_linklen); | |
470 | READ_BUF(create->cr_linklen); | |
471 | SAVEMEM(create->cr_linkname, create->cr_linklen); | |
472 | break; | |
473 | case NF4BLK: | |
474 | case NF4CHR: | |
475 | READ_BUF(8); | |
476 | READ32(create->cr_specdata1); | |
477 | READ32(create->cr_specdata2); | |
478 | break; | |
479 | case NF4SOCK: | |
480 | case NF4FIFO: | |
481 | case NF4DIR: | |
482 | default: | |
483 | break; | |
484 | } | |
485 | ||
486 | READ_BUF(4); | |
487 | READ32(create->cr_namelen); | |
488 | READ_BUF(create->cr_namelen); | |
489 | SAVEMEM(create->cr_name, create->cr_namelen); | |
490 | if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval))) | |
491 | return status; | |
492 | ||
493 | if ((status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, &create->cr_acl))) | |
494 | goto out; | |
495 | ||
496 | DECODE_TAIL; | |
497 | } | |
498 | ||
499 | static inline int | |
500 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) | |
501 | { | |
502 | DECODE_HEAD; | |
503 | ||
504 | READ_BUF(sizeof(stateid_t)); | |
505 | READ32(dr->dr_stateid.si_generation); | |
506 | COPYMEM(&dr->dr_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
507 | ||
508 | DECODE_TAIL; | |
509 | } | |
510 | ||
511 | static inline int | |
512 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) | |
513 | { | |
514 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
515 | } | |
516 | ||
517 | static int | |
518 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) | |
519 | { | |
520 | DECODE_HEAD; | |
521 | ||
522 | READ_BUF(4); | |
523 | READ32(link->li_namelen); | |
524 | READ_BUF(link->li_namelen); | |
525 | SAVEMEM(link->li_name, link->li_namelen); | |
526 | if ((status = check_filename(link->li_name, link->li_namelen, nfserr_inval))) | |
527 | return status; | |
528 | ||
529 | DECODE_TAIL; | |
530 | } | |
531 | ||
532 | static int | |
533 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) | |
534 | { | |
535 | DECODE_HEAD; | |
536 | ||
3a65588a | 537 | lock->lk_replay_owner = NULL; |
1da177e4 LT |
538 | /* |
539 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
540 | */ | |
541 | READ_BUF(28); | |
542 | READ32(lock->lk_type); | |
543 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) | |
544 | goto xdr_error; | |
545 | READ32(lock->lk_reclaim); | |
546 | READ64(lock->lk_offset); | |
547 | READ64(lock->lk_length); | |
548 | READ32(lock->lk_is_new); | |
549 | ||
550 | if (lock->lk_is_new) { | |
551 | READ_BUF(36); | |
552 | READ32(lock->lk_new_open_seqid); | |
553 | READ32(lock->lk_new_open_stateid.si_generation); | |
554 | ||
555 | COPYMEM(&lock->lk_new_open_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
556 | READ32(lock->lk_new_lock_seqid); | |
557 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); | |
558 | READ32(lock->lk_new_owner.len); | |
559 | READ_BUF(lock->lk_new_owner.len); | |
560 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
561 | } else { | |
562 | READ_BUF(20); | |
563 | READ32(lock->lk_old_lock_stateid.si_generation); | |
564 | COPYMEM(&lock->lk_old_lock_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
565 | READ32(lock->lk_old_lock_seqid); | |
566 | } | |
567 | ||
568 | DECODE_TAIL; | |
569 | } | |
570 | ||
571 | static int | |
572 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) | |
573 | { | |
574 | DECODE_HEAD; | |
575 | ||
576 | READ_BUF(32); | |
577 | READ32(lockt->lt_type); | |
578 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) | |
579 | goto xdr_error; | |
580 | READ64(lockt->lt_offset); | |
581 | READ64(lockt->lt_length); | |
582 | COPYMEM(&lockt->lt_clientid, 8); | |
583 | READ32(lockt->lt_owner.len); | |
584 | READ_BUF(lockt->lt_owner.len); | |
585 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
586 | ||
587 | DECODE_TAIL; | |
588 | } | |
589 | ||
590 | static int | |
591 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) | |
592 | { | |
593 | DECODE_HEAD; | |
594 | ||
595 | locku->lu_stateowner = NULL; | |
596 | READ_BUF(24 + sizeof(stateid_t)); | |
597 | READ32(locku->lu_type); | |
598 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) | |
599 | goto xdr_error; | |
600 | READ32(locku->lu_seqid); | |
601 | READ32(locku->lu_stateid.si_generation); | |
602 | COPYMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
603 | READ64(locku->lu_offset); | |
604 | READ64(locku->lu_length); | |
605 | ||
606 | DECODE_TAIL; | |
607 | } | |
608 | ||
609 | static int | |
610 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) | |
611 | { | |
612 | DECODE_HEAD; | |
613 | ||
614 | READ_BUF(4); | |
615 | READ32(lookup->lo_len); | |
616 | READ_BUF(lookup->lo_len); | |
617 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
618 | if ((status = check_filename(lookup->lo_name, lookup->lo_len, nfserr_noent))) | |
619 | return status; | |
620 | ||
621 | DECODE_TAIL; | |
622 | } | |
623 | ||
624 | static int | |
625 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) | |
626 | { | |
627 | DECODE_HEAD; | |
628 | ||
629 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
630 | open->op_iattr.ia_valid = 0; | |
631 | open->op_stateowner = NULL; | |
632 | ||
633 | /* seqid, share_access, share_deny, clientid, ownerlen */ | |
634 | READ_BUF(16 + sizeof(clientid_t)); | |
635 | READ32(open->op_seqid); | |
636 | READ32(open->op_share_access); | |
637 | READ32(open->op_share_deny); | |
638 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); | |
639 | READ32(open->op_owner.len); | |
640 | ||
641 | /* owner, open_flag */ | |
642 | READ_BUF(open->op_owner.len + 4); | |
643 | SAVEMEM(open->op_owner.data, open->op_owner.len); | |
644 | READ32(open->op_create); | |
645 | switch (open->op_create) { | |
646 | case NFS4_OPEN_NOCREATE: | |
647 | break; | |
648 | case NFS4_OPEN_CREATE: | |
649 | READ_BUF(4); | |
650 | READ32(open->op_createmode); | |
651 | switch (open->op_createmode) { | |
652 | case NFS4_CREATE_UNCHECKED: | |
653 | case NFS4_CREATE_GUARDED: | |
654 | if ((status = nfsd4_decode_fattr(argp, open->op_bmval, &open->op_iattr, &open->op_acl))) | |
655 | goto out; | |
656 | break; | |
657 | case NFS4_CREATE_EXCLUSIVE: | |
658 | READ_BUF(8); | |
659 | COPYMEM(open->op_verf.data, 8); | |
660 | break; | |
661 | default: | |
662 | goto xdr_error; | |
663 | } | |
664 | break; | |
665 | default: | |
666 | goto xdr_error; | |
667 | } | |
668 | ||
669 | /* open_claim */ | |
670 | READ_BUF(4); | |
671 | READ32(open->op_claim_type); | |
672 | switch (open->op_claim_type) { | |
673 | case NFS4_OPEN_CLAIM_NULL: | |
674 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
675 | READ_BUF(4); | |
676 | READ32(open->op_fname.len); | |
677 | READ_BUF(open->op_fname.len); | |
678 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
679 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) | |
680 | return status; | |
681 | break; | |
682 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
683 | READ_BUF(4); | |
684 | READ32(open->op_delegate_type); | |
685 | break; | |
686 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
687 | READ_BUF(sizeof(stateid_t) + 4); | |
688 | COPYMEM(&open->op_delegate_stateid, sizeof(stateid_t)); | |
689 | READ32(open->op_fname.len); | |
690 | READ_BUF(open->op_fname.len); | |
691 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
692 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) | |
693 | return status; | |
694 | break; | |
695 | default: | |
696 | goto xdr_error; | |
697 | } | |
698 | ||
699 | DECODE_TAIL; | |
700 | } | |
701 | ||
702 | static int | |
703 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) | |
704 | { | |
705 | DECODE_HEAD; | |
706 | ||
707 | open_conf->oc_stateowner = NULL; | |
708 | READ_BUF(4 + sizeof(stateid_t)); | |
709 | READ32(open_conf->oc_req_stateid.si_generation); | |
710 | COPYMEM(&open_conf->oc_req_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
711 | READ32(open_conf->oc_seqid); | |
712 | ||
713 | DECODE_TAIL; | |
714 | } | |
715 | ||
716 | static int | |
717 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) | |
718 | { | |
719 | DECODE_HEAD; | |
720 | ||
721 | open_down->od_stateowner = NULL; | |
722 | READ_BUF(12 + sizeof(stateid_t)); | |
723 | READ32(open_down->od_stateid.si_generation); | |
724 | COPYMEM(&open_down->od_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
725 | READ32(open_down->od_seqid); | |
726 | READ32(open_down->od_share_access); | |
727 | READ32(open_down->od_share_deny); | |
728 | ||
729 | DECODE_TAIL; | |
730 | } | |
731 | ||
732 | static int | |
733 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) | |
734 | { | |
735 | DECODE_HEAD; | |
736 | ||
737 | READ_BUF(4); | |
738 | READ32(putfh->pf_fhlen); | |
739 | if (putfh->pf_fhlen > NFS4_FHSIZE) | |
740 | goto xdr_error; | |
741 | READ_BUF(putfh->pf_fhlen); | |
742 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
743 | ||
744 | DECODE_TAIL; | |
745 | } | |
746 | ||
747 | static int | |
748 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) | |
749 | { | |
750 | DECODE_HEAD; | |
751 | ||
752 | READ_BUF(sizeof(stateid_t) + 12); | |
753 | READ32(read->rd_stateid.si_generation); | |
754 | COPYMEM(&read->rd_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
755 | READ64(read->rd_offset); | |
756 | READ32(read->rd_length); | |
757 | ||
758 | DECODE_TAIL; | |
759 | } | |
760 | ||
761 | static int | |
762 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) | |
763 | { | |
764 | DECODE_HEAD; | |
765 | ||
766 | READ_BUF(24); | |
767 | READ64(readdir->rd_cookie); | |
768 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); | |
769 | READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ | |
770 | READ32(readdir->rd_maxcount); | |
771 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) | |
772 | goto out; | |
773 | ||
774 | DECODE_TAIL; | |
775 | } | |
776 | ||
777 | static int | |
778 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) | |
779 | { | |
780 | DECODE_HEAD; | |
781 | ||
782 | READ_BUF(4); | |
783 | READ32(remove->rm_namelen); | |
784 | READ_BUF(remove->rm_namelen); | |
785 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
786 | if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent))) | |
787 | return status; | |
788 | ||
789 | DECODE_TAIL; | |
790 | } | |
791 | ||
792 | static int | |
793 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) | |
794 | { | |
795 | DECODE_HEAD; | |
796 | ||
797 | READ_BUF(4); | |
798 | READ32(rename->rn_snamelen); | |
799 | READ_BUF(rename->rn_snamelen + 4); | |
800 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); | |
801 | READ32(rename->rn_tnamelen); | |
802 | READ_BUF(rename->rn_tnamelen); | |
803 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
804 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent))) | |
805 | return status; | |
806 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval))) | |
807 | return status; | |
808 | ||
809 | DECODE_TAIL; | |
810 | } | |
811 | ||
812 | static int | |
813 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) | |
814 | { | |
815 | DECODE_HEAD; | |
816 | ||
817 | READ_BUF(sizeof(clientid_t)); | |
818 | COPYMEM(clientid, sizeof(clientid_t)); | |
819 | ||
820 | DECODE_TAIL; | |
821 | } | |
822 | ||
823 | static int | |
824 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) | |
825 | { | |
826 | DECODE_HEAD; | |
827 | ||
828 | READ_BUF(sizeof(stateid_t)); | |
829 | READ32(setattr->sa_stateid.si_generation); | |
830 | COPYMEM(&setattr->sa_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
831 | if ((status = nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, &setattr->sa_acl))) | |
832 | goto out; | |
833 | ||
834 | DECODE_TAIL; | |
835 | } | |
836 | ||
837 | static int | |
838 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) | |
839 | { | |
840 | DECODE_HEAD; | |
841 | ||
842 | READ_BUF(12); | |
843 | COPYMEM(setclientid->se_verf.data, 8); | |
844 | READ32(setclientid->se_namelen); | |
845 | ||
846 | READ_BUF(setclientid->se_namelen + 8); | |
847 | SAVEMEM(setclientid->se_name, setclientid->se_namelen); | |
848 | READ32(setclientid->se_callback_prog); | |
849 | READ32(setclientid->se_callback_netid_len); | |
850 | ||
851 | READ_BUF(setclientid->se_callback_netid_len + 4); | |
852 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); | |
853 | READ32(setclientid->se_callback_addr_len); | |
854 | ||
855 | READ_BUF(setclientid->se_callback_addr_len + 4); | |
856 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); | |
857 | READ32(setclientid->se_callback_ident); | |
858 | ||
859 | DECODE_TAIL; | |
860 | } | |
861 | ||
862 | static int | |
863 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) | |
864 | { | |
865 | DECODE_HEAD; | |
866 | ||
867 | READ_BUF(8 + sizeof(nfs4_verifier)); | |
868 | COPYMEM(&scd_c->sc_clientid, 8); | |
869 | COPYMEM(&scd_c->sc_confirm, sizeof(nfs4_verifier)); | |
870 | ||
871 | DECODE_TAIL; | |
872 | } | |
873 | ||
874 | /* Also used for NVERIFY */ | |
875 | static int | |
876 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) | |
877 | { | |
878 | #if 0 | |
879 | struct nfsd4_compoundargs save = { | |
880 | .p = argp->p, | |
881 | .end = argp->end, | |
882 | .rqstp = argp->rqstp, | |
883 | }; | |
884 | u32 ve_bmval[2]; | |
885 | struct iattr ve_iattr; /* request */ | |
886 | struct nfs4_acl *ve_acl; /* request */ | |
887 | #endif | |
888 | DECODE_HEAD; | |
889 | ||
890 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
891 | goto out; | |
892 | ||
893 | /* For convenience's sake, we compare raw xdr'd attributes in | |
894 | * nfsd4_proc_verify; however we still decode here just to return | |
895 | * correct error in case of bad xdr. */ | |
896 | #if 0 | |
897 | status = nfsd4_decode_fattr(ve_bmval, &ve_iattr, &ve_acl); | |
898 | if (status == nfserr_inval) { | |
899 | status = nfserrno(status); | |
900 | goto out; | |
901 | } | |
902 | #endif | |
903 | READ_BUF(4); | |
904 | READ32(verify->ve_attrlen); | |
905 | READ_BUF(verify->ve_attrlen); | |
906 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
907 | ||
908 | DECODE_TAIL; | |
909 | } | |
910 | ||
911 | static int | |
912 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) | |
913 | { | |
914 | int avail; | |
915 | int v; | |
916 | int len; | |
917 | DECODE_HEAD; | |
918 | ||
919 | READ_BUF(sizeof(stateid_opaque_t) + 20); | |
920 | READ32(write->wr_stateid.si_generation); | |
921 | COPYMEM(&write->wr_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
922 | READ64(write->wr_offset); | |
923 | READ32(write->wr_stable_how); | |
924 | if (write->wr_stable_how > 2) | |
925 | goto xdr_error; | |
926 | READ32(write->wr_buflen); | |
927 | ||
928 | /* Sorry .. no magic macros for this.. * | |
929 | * READ_BUF(write->wr_buflen); | |
930 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
931 | */ | |
932 | avail = (char*)argp->end - (char*)argp->p; | |
933 | if (avail + argp->pagelen < write->wr_buflen) { | |
934 | printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); | |
935 | goto xdr_error; | |
936 | } | |
3cc03b16 N |
937 | argp->rqstp->rq_vec[0].iov_base = p; |
938 | argp->rqstp->rq_vec[0].iov_len = avail; | |
1da177e4 LT |
939 | v = 0; |
940 | len = write->wr_buflen; | |
3cc03b16 N |
941 | while (len > argp->rqstp->rq_vec[v].iov_len) { |
942 | len -= argp->rqstp->rq_vec[v].iov_len; | |
1da177e4 | 943 | v++; |
3cc03b16 | 944 | argp->rqstp->rq_vec[v].iov_base = page_address(argp->pagelist[0]); |
1da177e4 LT |
945 | argp->pagelist++; |
946 | if (argp->pagelen >= PAGE_SIZE) { | |
3cc03b16 | 947 | argp->rqstp->rq_vec[v].iov_len = PAGE_SIZE; |
1da177e4 LT |
948 | argp->pagelen -= PAGE_SIZE; |
949 | } else { | |
3cc03b16 | 950 | argp->rqstp->rq_vec[v].iov_len = argp->pagelen; |
1da177e4 LT |
951 | argp->pagelen -= len; |
952 | } | |
953 | } | |
3cc03b16 N |
954 | argp->end = (u32*) (argp->rqstp->rq_vec[v].iov_base + argp->rqstp->rq_vec[v].iov_len); |
955 | argp->p = (u32*) (argp->rqstp->rq_vec[v].iov_base + (XDR_QUADLEN(len) << 2)); | |
956 | argp->rqstp->rq_vec[v].iov_len = len; | |
1da177e4 LT |
957 | write->wr_vlen = v+1; |
958 | ||
959 | DECODE_TAIL; | |
960 | } | |
961 | ||
962 | static int | |
963 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) | |
964 | { | |
965 | DECODE_HEAD; | |
966 | ||
967 | READ_BUF(12); | |
968 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
969 | READ32(rlockowner->rl_owner.len); | |
970 | READ_BUF(rlockowner->rl_owner.len); | |
971 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
972 | ||
973 | DECODE_TAIL; | |
974 | } | |
975 | ||
976 | static int | |
977 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) | |
978 | { | |
979 | DECODE_HEAD; | |
980 | struct nfsd4_op *op; | |
981 | int i; | |
982 | ||
983 | /* | |
984 | * XXX: According to spec, we should check the tag | |
985 | * for UTF-8 compliance. I'm postponing this for | |
986 | * now because it seems that some clients do use | |
987 | * binary tags. | |
988 | */ | |
989 | READ_BUF(4); | |
990 | READ32(argp->taglen); | |
991 | READ_BUF(argp->taglen + 8); | |
992 | SAVEMEM(argp->tag, argp->taglen); | |
993 | READ32(argp->minorversion); | |
994 | READ32(argp->opcnt); | |
995 | ||
996 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
997 | goto xdr_error; | |
998 | if (argp->opcnt > 100) | |
999 | goto xdr_error; | |
1000 | ||
e8c96f8c | 1001 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
1da177e4 LT |
1002 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1003 | if (!argp->ops) { | |
1004 | argp->ops = argp->iops; | |
1005 | printk(KERN_INFO "nfsd: couldn't allocate room for COMPOUND\n"); | |
1006 | goto xdr_error; | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | for (i = 0; i < argp->opcnt; i++) { | |
1011 | op = &argp->ops[i]; | |
1012 | op->replay = NULL; | |
1013 | ||
1014 | /* | |
1015 | * We can't use READ_BUF() here because we need to handle | |
1016 | * a missing opcode as an OP_WRITE + 1. So we need to check | |
1017 | * to see if we're truly at the end of our buffer or if there | |
1018 | * is another page we need to flip to. | |
1019 | */ | |
1020 | ||
1021 | if (argp->p == argp->end) { | |
1022 | if (argp->pagelen < 4) { | |
1023 | /* There isn't an opcode still on the wire */ | |
1024 | op->opnum = OP_WRITE + 1; | |
1025 | op->status = nfserr_bad_xdr; | |
1026 | argp->opcnt = i+1; | |
1027 | break; | |
1028 | } | |
1029 | ||
1030 | /* | |
1031 | * False alarm. We just hit a page boundary, but there | |
1032 | * is still data available. Move pointer across page | |
1033 | * boundary. *snip from READ_BUF* | |
1034 | */ | |
1035 | argp->p = page_address(argp->pagelist[0]); | |
1036 | argp->pagelist++; | |
1037 | if (argp->pagelen < PAGE_SIZE) { | |
1038 | argp->end = p + (argp->pagelen>>2); | |
1039 | argp->pagelen = 0; | |
1040 | } else { | |
1041 | argp->end = p + (PAGE_SIZE>>2); | |
1042 | argp->pagelen -= PAGE_SIZE; | |
1043 | } | |
1044 | } | |
1045 | op->opnum = ntohl(*argp->p++); | |
1046 | ||
1047 | switch (op->opnum) { | |
1048 | case 2: /* Reserved operation */ | |
1049 | op->opnum = OP_ILLEGAL; | |
1050 | if (argp->minorversion == 0) | |
1051 | op->status = nfserr_op_illegal; | |
1052 | else | |
1053 | op->status = nfserr_minor_vers_mismatch; | |
1054 | break; | |
1055 | case OP_ACCESS: | |
1056 | op->status = nfsd4_decode_access(argp, &op->u.access); | |
1057 | break; | |
1058 | case OP_CLOSE: | |
1059 | op->status = nfsd4_decode_close(argp, &op->u.close); | |
1060 | break; | |
1061 | case OP_COMMIT: | |
1062 | op->status = nfsd4_decode_commit(argp, &op->u.commit); | |
1063 | break; | |
1064 | case OP_CREATE: | |
1065 | op->status = nfsd4_decode_create(argp, &op->u.create); | |
1066 | break; | |
1067 | case OP_DELEGRETURN: | |
1068 | op->status = nfsd4_decode_delegreturn(argp, &op->u.delegreturn); | |
1069 | break; | |
1070 | case OP_GETATTR: | |
1071 | op->status = nfsd4_decode_getattr(argp, &op->u.getattr); | |
1072 | break; | |
1073 | case OP_GETFH: | |
1074 | op->status = nfs_ok; | |
1075 | break; | |
1076 | case OP_LINK: | |
1077 | op->status = nfsd4_decode_link(argp, &op->u.link); | |
1078 | break; | |
1079 | case OP_LOCK: | |
1080 | op->status = nfsd4_decode_lock(argp, &op->u.lock); | |
1081 | break; | |
1082 | case OP_LOCKT: | |
1083 | op->status = nfsd4_decode_lockt(argp, &op->u.lockt); | |
1084 | break; | |
1085 | case OP_LOCKU: | |
1086 | op->status = nfsd4_decode_locku(argp, &op->u.locku); | |
1087 | break; | |
1088 | case OP_LOOKUP: | |
1089 | op->status = nfsd4_decode_lookup(argp, &op->u.lookup); | |
1090 | break; | |
1091 | case OP_LOOKUPP: | |
1092 | op->status = nfs_ok; | |
1093 | break; | |
1094 | case OP_NVERIFY: | |
1095 | op->status = nfsd4_decode_verify(argp, &op->u.nverify); | |
1096 | break; | |
1097 | case OP_OPEN: | |
1098 | op->status = nfsd4_decode_open(argp, &op->u.open); | |
1099 | break; | |
1100 | case OP_OPEN_CONFIRM: | |
1101 | op->status = nfsd4_decode_open_confirm(argp, &op->u.open_confirm); | |
1102 | break; | |
1103 | case OP_OPEN_DOWNGRADE: | |
1104 | op->status = nfsd4_decode_open_downgrade(argp, &op->u.open_downgrade); | |
1105 | break; | |
1106 | case OP_PUTFH: | |
1107 | op->status = nfsd4_decode_putfh(argp, &op->u.putfh); | |
1108 | break; | |
1109 | case OP_PUTROOTFH: | |
1110 | op->status = nfs_ok; | |
1111 | break; | |
1112 | case OP_READ: | |
1113 | op->status = nfsd4_decode_read(argp, &op->u.read); | |
1114 | break; | |
1115 | case OP_READDIR: | |
1116 | op->status = nfsd4_decode_readdir(argp, &op->u.readdir); | |
1117 | break; | |
1118 | case OP_READLINK: | |
1119 | op->status = nfs_ok; | |
1120 | break; | |
1121 | case OP_REMOVE: | |
1122 | op->status = nfsd4_decode_remove(argp, &op->u.remove); | |
1123 | break; | |
1124 | case OP_RENAME: | |
1125 | op->status = nfsd4_decode_rename(argp, &op->u.rename); | |
1126 | break; | |
1127 | case OP_RESTOREFH: | |
1128 | op->status = nfs_ok; | |
1129 | break; | |
1130 | case OP_RENEW: | |
1131 | op->status = nfsd4_decode_renew(argp, &op->u.renew); | |
1132 | break; | |
1133 | case OP_SAVEFH: | |
1134 | op->status = nfs_ok; | |
1135 | break; | |
1136 | case OP_SETATTR: | |
1137 | op->status = nfsd4_decode_setattr(argp, &op->u.setattr); | |
1138 | break; | |
1139 | case OP_SETCLIENTID: | |
1140 | op->status = nfsd4_decode_setclientid(argp, &op->u.setclientid); | |
1141 | break; | |
1142 | case OP_SETCLIENTID_CONFIRM: | |
1143 | op->status = nfsd4_decode_setclientid_confirm(argp, &op->u.setclientid_confirm); | |
1144 | break; | |
1145 | case OP_VERIFY: | |
1146 | op->status = nfsd4_decode_verify(argp, &op->u.verify); | |
1147 | break; | |
1148 | case OP_WRITE: | |
1149 | op->status = nfsd4_decode_write(argp, &op->u.write); | |
1150 | break; | |
1151 | case OP_RELEASE_LOCKOWNER: | |
1152 | op->status = nfsd4_decode_release_lockowner(argp, &op->u.release_lockowner); | |
1153 | break; | |
1154 | default: | |
1155 | op->opnum = OP_ILLEGAL; | |
1156 | op->status = nfserr_op_illegal; | |
1157 | break; | |
1158 | } | |
1159 | ||
1160 | if (op->status) { | |
1161 | argp->opcnt = i+1; | |
1162 | break; | |
1163 | } | |
1164 | } | |
1165 | ||
1166 | DECODE_TAIL; | |
1167 | } | |
1168 | /* | |
1169 | * END OF "GENERIC" DECODE ROUTINES. | |
1170 | */ | |
1171 | ||
1172 | /* | |
1173 | * START OF "GENERIC" ENCODE ROUTINES. | |
1174 | * These may look a little ugly since they are imported from a "generic" | |
1175 | * set of XDR encode/decode routines which are intended to be shared by | |
1176 | * all of our NFSv4 implementations (OpenBSD, MacOS X...). | |
1177 | * | |
1178 | * If the pain of reading these is too great, it should be a straightforward | |
1179 | * task to translate them into Linux-specific versions which are more | |
1180 | * consistent with the style used in NFSv2/v3... | |
1181 | */ | |
1182 | #define ENCODE_HEAD u32 *p | |
1183 | ||
1184 | #define WRITE32(n) *p++ = htonl(n) | |
1185 | #define WRITE64(n) do { \ | |
1186 | *p++ = htonl((u32)((n) >> 32)); \ | |
1187 | *p++ = htonl((u32)(n)); \ | |
1188 | } while (0) | |
1189 | #define WRITEMEM(ptr,nbytes) do { \ | |
1190 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ | |
1191 | memcpy(p, ptr, nbytes); \ | |
1192 | p += XDR_QUADLEN(nbytes); \ | |
1193 | } while (0) | |
1194 | #define WRITECINFO(c) do { \ | |
1195 | *p++ = htonl(c.atomic); \ | |
1196 | *p++ = htonl(c.before_ctime_sec); \ | |
1197 | *p++ = htonl(c.before_ctime_nsec); \ | |
1198 | *p++ = htonl(c.after_ctime_sec); \ | |
1199 | *p++ = htonl(c.after_ctime_nsec); \ | |
1200 | } while (0) | |
1201 | ||
1202 | #define RESERVE_SPACE(nbytes) do { \ | |
1203 | p = resp->p; \ | |
1204 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ | |
1205 | } while (0) | |
1206 | #define ADJUST_ARGS() resp->p = p | |
1207 | ||
1208 | /* | |
1209 | * Header routine to setup seqid operation replay cache | |
1210 | */ | |
1211 | #define ENCODE_SEQID_OP_HEAD \ | |
1212 | u32 *p; \ | |
1213 | u32 *save; \ | |
1214 | \ | |
1215 | save = resp->p; | |
1216 | ||
1217 | /* | |
7fb64cee N |
1218 | * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This |
1219 | * is where sequence id's are incremented, and the replay cache is filled. | |
1220 | * Note that we increment sequence id's here, at the last moment, so we're sure | |
1221 | * we know whether the error to be returned is a sequence id mutating error. | |
1da177e4 LT |
1222 | */ |
1223 | ||
1224 | #define ENCODE_SEQID_OP_TAIL(stateowner) do { \ | |
1225 | if (seqid_mutating_err(nfserr) && stateowner) { \ | |
bd9aac52 | 1226 | stateowner->so_seqid++; \ |
1da177e4 LT |
1227 | stateowner->so_replay.rp_status = nfserr; \ |
1228 | stateowner->so_replay.rp_buflen = \ | |
1229 | (((char *)(resp)->p - (char *)save)); \ | |
1230 | memcpy(stateowner->so_replay.rp_buf, save, \ | |
1231 | stateowner->so_replay.rp_buflen); \ | |
1232 | } } while (0); | |
1233 | ||
81c3f413 BF |
1234 | /* Encode as an array of strings the string given with components |
1235 | * seperated @sep. | |
1236 | */ | |
1237 | static int nfsd4_encode_components(char sep, char *components, | |
1238 | u32 **pp, int *buflen) | |
1239 | { | |
1240 | u32 *p = *pp; | |
1241 | u32 *countp = p; | |
1242 | int strlen, count=0; | |
1243 | char *str, *end; | |
1244 | ||
1245 | dprintk("nfsd4_encode_components(%s)\n", components); | |
1246 | if ((*buflen -= 4) < 0) | |
1247 | return nfserr_resource; | |
1248 | WRITE32(0); /* We will fill this in with @count later */ | |
1249 | end = str = components; | |
1250 | while (*end) { | |
1251 | for (; *end && (*end != sep); end++) | |
1252 | ; /* Point to end of component */ | |
1253 | strlen = end - str; | |
1254 | if (strlen) { | |
1255 | if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0) | |
1256 | return nfserr_resource; | |
1257 | WRITE32(strlen); | |
1258 | WRITEMEM(str, strlen); | |
1259 | count++; | |
1260 | } | |
1261 | else | |
1262 | end++; | |
1263 | str = end; | |
1264 | } | |
1265 | *pp = p; | |
1266 | p = countp; | |
1267 | WRITE32(count); | |
1268 | return 0; | |
1269 | } | |
1270 | ||
1271 | /* | |
1272 | * encode a location element of a fs_locations structure | |
1273 | */ | |
1274 | static int nfsd4_encode_fs_location4(struct nfsd4_fs_location *location, | |
1275 | u32 **pp, int *buflen) | |
1276 | { | |
1277 | int status; | |
1278 | u32 *p = *pp; | |
1279 | ||
1280 | status = nfsd4_encode_components(':', location->hosts, &p, buflen); | |
1281 | if (status) | |
1282 | return status; | |
1283 | status = nfsd4_encode_components('/', location->path, &p, buflen); | |
1284 | if (status) | |
1285 | return status; | |
1286 | *pp = p; | |
1287 | return 0; | |
1288 | } | |
1289 | ||
1290 | /* | |
1291 | * Return the path to an export point in the pseudo filesystem namespace | |
1292 | * Returned string is safe to use as long as the caller holds a reference | |
1293 | * to @exp. | |
1294 | */ | |
1295 | static char *nfsd4_path(struct svc_rqst *rqstp, struct svc_export *exp) | |
1296 | { | |
1297 | struct svc_fh tmp_fh; | |
1298 | char *path, *rootpath; | |
1299 | int stat; | |
1300 | ||
1301 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
1302 | stat = exp_pseudoroot(rqstp->rq_client, &tmp_fh, &rqstp->rq_chandle); | |
1303 | if (stat) | |
1304 | return ERR_PTR(stat); | |
1305 | rootpath = tmp_fh.fh_export->ex_path; | |
1306 | ||
1307 | path = exp->ex_path; | |
1308 | ||
1309 | if (strncmp(path, rootpath, strlen(rootpath))) { | |
1310 | printk("nfsd: fs_locations failed;" | |
1311 | "%s is not contained in %s\n", path, rootpath); | |
1312 | return ERR_PTR(-EOPNOTSUPP); | |
1313 | } | |
1314 | ||
1315 | return path + strlen(rootpath); | |
1316 | } | |
1317 | ||
1318 | /* | |
1319 | * encode a fs_locations structure | |
1320 | */ | |
1321 | static int nfsd4_encode_fs_locations(struct svc_rqst *rqstp, | |
1322 | struct svc_export *exp, | |
1323 | u32 **pp, int *buflen) | |
1324 | { | |
1325 | int status, i; | |
1326 | u32 *p = *pp; | |
1327 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; | |
1328 | char *root = nfsd4_path(rqstp, exp); | |
1329 | ||
1330 | if (IS_ERR(root)) | |
1331 | return PTR_ERR(root); | |
1332 | status = nfsd4_encode_components('/', root, &p, buflen); | |
1333 | if (status) | |
1334 | return status; | |
1335 | if ((*buflen -= 4) < 0) | |
1336 | return nfserr_resource; | |
1337 | WRITE32(fslocs->locations_count); | |
1338 | for (i=0; i<fslocs->locations_count; i++) { | |
1339 | status = nfsd4_encode_fs_location4(&fslocs->locations[i], | |
1340 | &p, buflen); | |
1341 | if (status) | |
1342 | return status; | |
1343 | } | |
1344 | *pp = p; | |
1345 | return 0; | |
1346 | } | |
1da177e4 LT |
1347 | |
1348 | static u32 nfs4_ftypes[16] = { | |
1349 | NF4BAD, NF4FIFO, NF4CHR, NF4BAD, | |
1350 | NF4DIR, NF4BAD, NF4BLK, NF4BAD, | |
1351 | NF4REG, NF4BAD, NF4LNK, NF4BAD, | |
1352 | NF4SOCK, NF4BAD, NF4LNK, NF4BAD, | |
1353 | }; | |
1354 | ||
1355 | static int | |
1356 | nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group, | |
1357 | u32 **p, int *buflen) | |
1358 | { | |
1359 | int status; | |
1360 | ||
1361 | if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) | |
1362 | return nfserr_resource; | |
1363 | if (whotype != NFS4_ACL_WHO_NAMED) | |
1364 | status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); | |
1365 | else if (group) | |
1366 | status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1367 | else | |
1368 | status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1369 | if (status < 0) | |
1370 | return nfserrno(status); | |
1371 | *p = xdr_encode_opaque(*p, NULL, status); | |
1372 | *buflen -= (XDR_QUADLEN(status) << 2) + 4; | |
1373 | BUG_ON(*buflen < 0); | |
1374 | return 0; | |
1375 | } | |
1376 | ||
1377 | static inline int | |
1378 | nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, u32 **p, int *buflen) | |
1379 | { | |
1380 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen); | |
1381 | } | |
1382 | ||
1383 | static inline int | |
1384 | nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, u32 **p, int *buflen) | |
1385 | { | |
1386 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen); | |
1387 | } | |
1388 | ||
1389 | static inline int | |
1390 | nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group, | |
1391 | u32 **p, int *buflen) | |
1392 | { | |
1393 | return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen); | |
1394 | } | |
1395 | ||
42ca0993 BF |
1396 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
1397 | FATTR4_WORD0_RDATTR_ERROR) | |
1398 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
1399 | ||
1400 | static int fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) | |
1401 | { | |
1402 | /* As per referral draft: */ | |
1403 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
1404 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
1405 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
1406 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
1407 | *rdattr_err = NFSERR_MOVED; | |
1408 | else | |
1409 | return nfserr_moved; | |
1410 | } | |
1411 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
1412 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
1413 | return 0; | |
1414 | } | |
1da177e4 LT |
1415 | |
1416 | /* | |
1417 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
1418 | * ourselves. | |
1419 | * | |
1420 | * @countp is the buffer size in _words_; upon successful return this becomes | |
1421 | * replaced with the number of words written. | |
1422 | */ | |
1423 | int | |
1424 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, | |
1425 | struct dentry *dentry, u32 *buffer, int *countp, u32 *bmval, | |
1426 | struct svc_rqst *rqstp) | |
1427 | { | |
1428 | u32 bmval0 = bmval[0]; | |
1429 | u32 bmval1 = bmval[1]; | |
1430 | struct kstat stat; | |
1431 | struct svc_fh tempfh; | |
1432 | struct kstatfs statfs; | |
1433 | int buflen = *countp << 2; | |
1434 | u32 *attrlenp; | |
1435 | u32 dummy; | |
1436 | u64 dummy64; | |
42ca0993 | 1437 | u32 rdattr_err = 0; |
1da177e4 LT |
1438 | u32 *p = buffer; |
1439 | int status; | |
1440 | int aclsupport = 0; | |
1441 | struct nfs4_acl *acl = NULL; | |
1442 | ||
1443 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
1444 | BUG_ON(bmval0 & ~NFSD_SUPPORTED_ATTRS_WORD0); | |
1445 | BUG_ON(bmval1 & ~NFSD_SUPPORTED_ATTRS_WORD1); | |
1446 | ||
42ca0993 BF |
1447 | if (exp->ex_fslocs.migrated) { |
1448 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); | |
1449 | if (status) | |
1450 | goto out; | |
1451 | } | |
1452 | ||
1da177e4 LT |
1453 | status = vfs_getattr(exp->ex_mnt, dentry, &stat); |
1454 | if (status) | |
1455 | goto out_nfserr; | |
1456 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL)) || | |
1457 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | | |
1458 | FATTR4_WORD1_SPACE_TOTAL))) { | |
726c3342 | 1459 | status = vfs_statfs(dentry, &statfs); |
1da177e4 LT |
1460 | if (status) |
1461 | goto out_nfserr; | |
1462 | } | |
1463 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
1464 | fh_init(&tempfh, NFS4_FHSIZE); | |
1465 | status = fh_compose(&tempfh, exp, dentry, NULL); | |
1466 | if (status) | |
1467 | goto out; | |
1468 | fhp = &tempfh; | |
1469 | } | |
1470 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
1471 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
1472 | status = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); | |
1473 | aclsupport = (status == 0); | |
1474 | if (bmval0 & FATTR4_WORD0_ACL) { | |
1475 | if (status == -EOPNOTSUPP) | |
1476 | bmval0 &= ~FATTR4_WORD0_ACL; | |
1477 | else if (status == -EINVAL) { | |
1478 | status = nfserr_attrnotsupp; | |
1479 | goto out; | |
1480 | } else if (status != 0) | |
1481 | goto out_nfserr; | |
1482 | } | |
1483 | } | |
81c3f413 BF |
1484 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
1485 | if (exp->ex_fslocs.locations == NULL) { | |
1486 | bmval0 &= ~FATTR4_WORD0_FS_LOCATIONS; | |
1487 | } | |
1488 | } | |
1da177e4 LT |
1489 | if ((buflen -= 16) < 0) |
1490 | goto out_resource; | |
1491 | ||
1492 | WRITE32(2); | |
1493 | WRITE32(bmval0); | |
1494 | WRITE32(bmval1); | |
1495 | attrlenp = p++; /* to be backfilled later */ | |
1496 | ||
1497 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
42ca0993 | 1498 | u32 word0 = NFSD_SUPPORTED_ATTRS_WORD0; |
1da177e4 LT |
1499 | if ((buflen -= 12) < 0) |
1500 | goto out_resource; | |
42ca0993 BF |
1501 | if (!aclsupport) |
1502 | word0 &= ~FATTR4_WORD0_ACL; | |
1503 | if (!exp->ex_fslocs.locations) | |
1504 | word0 &= ~FATTR4_WORD0_FS_LOCATIONS; | |
1da177e4 | 1505 | WRITE32(2); |
42ca0993 | 1506 | WRITE32(word0); |
1da177e4 LT |
1507 | WRITE32(NFSD_SUPPORTED_ATTRS_WORD1); |
1508 | } | |
1509 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
1510 | if ((buflen -= 4) < 0) | |
1511 | goto out_resource; | |
1512 | dummy = nfs4_ftypes[(stat.mode & S_IFMT) >> 12]; | |
1513 | if (dummy == NF4BAD) | |
1514 | goto out_serverfault; | |
1515 | WRITE32(dummy); | |
1516 | } | |
1517 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
1518 | if ((buflen -= 4) < 0) | |
1519 | goto out_resource; | |
49640001 | 1520 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
e34ac862 | 1521 | WRITE32(NFS4_FH_PERSISTENT); |
49640001 | 1522 | else |
e34ac862 | 1523 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
1da177e4 LT |
1524 | } |
1525 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
1526 | /* | |
1527 | * Note: This _must_ be consistent with the scheme for writing | |
1528 | * change_info, so any changes made here must be reflected there | |
1529 | * as well. (See xdr4.h:set_change_info() and the WRITECINFO() | |
1530 | * macro above.) | |
1531 | */ | |
1532 | if ((buflen -= 8) < 0) | |
1533 | goto out_resource; | |
1534 | WRITE32(stat.ctime.tv_sec); | |
1535 | WRITE32(stat.ctime.tv_nsec); | |
1536 | } | |
1537 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
1538 | if ((buflen -= 8) < 0) | |
1539 | goto out_resource; | |
1540 | WRITE64(stat.size); | |
1541 | } | |
1542 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
1543 | if ((buflen -= 4) < 0) | |
1544 | goto out_resource; | |
1545 | WRITE32(1); | |
1546 | } | |
1547 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
1548 | if ((buflen -= 4) < 0) | |
1549 | goto out_resource; | |
1550 | WRITE32(1); | |
1551 | } | |
1552 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
1553 | if ((buflen -= 4) < 0) | |
1554 | goto out_resource; | |
1555 | WRITE32(0); | |
1556 | } | |
1557 | if (bmval0 & FATTR4_WORD0_FSID) { | |
1558 | if ((buflen -= 16) < 0) | |
1559 | goto out_resource; | |
42ca0993 BF |
1560 | if (exp->ex_fslocs.migrated) { |
1561 | WRITE64(NFS4_REFERRAL_FSID_MAJOR); | |
1562 | WRITE64(NFS4_REFERRAL_FSID_MINOR); | |
1563 | } else if (is_fsid(fhp, rqstp->rq_reffh)) { | |
1da177e4 LT |
1564 | WRITE64((u64)exp->ex_fsid); |
1565 | WRITE64((u64)0); | |
1566 | } else { | |
1567 | WRITE32(0); | |
1568 | WRITE32(MAJOR(stat.dev)); | |
1569 | WRITE32(0); | |
1570 | WRITE32(MINOR(stat.dev)); | |
1571 | } | |
1572 | } | |
1573 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
1574 | if ((buflen -= 4) < 0) | |
1575 | goto out_resource; | |
1576 | WRITE32(0); | |
1577 | } | |
1578 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
1579 | if ((buflen -= 4) < 0) | |
1580 | goto out_resource; | |
1581 | WRITE32(NFSD_LEASE_TIME); | |
1582 | } | |
1583 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
1584 | if ((buflen -= 4) < 0) | |
1585 | goto out_resource; | |
42ca0993 | 1586 | WRITE32(rdattr_err); |
1da177e4 LT |
1587 | } |
1588 | if (bmval0 & FATTR4_WORD0_ACL) { | |
1589 | struct nfs4_ace *ace; | |
1590 | struct list_head *h; | |
1591 | ||
1592 | if (acl == NULL) { | |
1593 | if ((buflen -= 4) < 0) | |
1594 | goto out_resource; | |
1595 | ||
1596 | WRITE32(0); | |
1597 | goto out_acl; | |
1598 | } | |
1599 | if ((buflen -= 4) < 0) | |
1600 | goto out_resource; | |
1601 | WRITE32(acl->naces); | |
1602 | ||
1603 | list_for_each(h, &acl->ace_head) { | |
1604 | ace = list_entry(h, struct nfs4_ace, l_ace); | |
1605 | ||
1606 | if ((buflen -= 4*3) < 0) | |
1607 | goto out_resource; | |
1608 | WRITE32(ace->type); | |
1609 | WRITE32(ace->flag); | |
1610 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); | |
1611 | status = nfsd4_encode_aclname(rqstp, ace->whotype, | |
1612 | ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP, | |
1613 | &p, &buflen); | |
1614 | if (status == nfserr_resource) | |
1615 | goto out_resource; | |
1616 | if (status) | |
1617 | goto out; | |
1618 | } | |
1619 | } | |
1620 | out_acl: | |
1621 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
1622 | if ((buflen -= 4) < 0) | |
1623 | goto out_resource; | |
1624 | WRITE32(aclsupport ? | |
1625 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); | |
1626 | } | |
1627 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
1628 | if ((buflen -= 4) < 0) | |
1629 | goto out_resource; | |
1630 | WRITE32(1); | |
1631 | } | |
1632 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
1633 | if ((buflen -= 4) < 0) | |
1634 | goto out_resource; | |
1635 | WRITE32(1); | |
1636 | } | |
1637 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
1638 | if ((buflen -= 4) < 0) | |
1639 | goto out_resource; | |
1640 | WRITE32(1); | |
1641 | } | |
1642 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
1643 | if ((buflen -= 4) < 0) | |
1644 | goto out_resource; | |
1645 | WRITE32(1); | |
1646 | } | |
1647 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
1648 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; | |
1649 | if (buflen < 0) | |
1650 | goto out_resource; | |
1651 | WRITE32(fhp->fh_handle.fh_size); | |
1652 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); | |
1653 | } | |
1654 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
1655 | if ((buflen -= 8) < 0) | |
1656 | goto out_resource; | |
1657 | WRITE64((u64) stat.ino); | |
1658 | } | |
1659 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
1660 | if ((buflen -= 8) < 0) | |
1661 | goto out_resource; | |
1662 | WRITE64((u64) statfs.f_ffree); | |
1663 | } | |
1664 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
1665 | if ((buflen -= 8) < 0) | |
1666 | goto out_resource; | |
1667 | WRITE64((u64) statfs.f_ffree); | |
1668 | } | |
1669 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
1670 | if ((buflen -= 8) < 0) | |
1671 | goto out_resource; | |
1672 | WRITE64((u64) statfs.f_files); | |
1673 | } | |
81c3f413 BF |
1674 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
1675 | status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); | |
1676 | if (status == nfserr_resource) | |
1677 | goto out_resource; | |
1678 | if (status) | |
1679 | goto out; | |
1680 | } | |
1da177e4 LT |
1681 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
1682 | if ((buflen -= 4) < 0) | |
1683 | goto out_resource; | |
1684 | WRITE32(1); | |
1685 | } | |
1686 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
1687 | if ((buflen -= 8) < 0) | |
1688 | goto out_resource; | |
1689 | WRITE64(~(u64)0); | |
1690 | } | |
1691 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
1692 | if ((buflen -= 4) < 0) | |
1693 | goto out_resource; | |
1694 | WRITE32(255); | |
1695 | } | |
1696 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
1697 | if ((buflen -= 4) < 0) | |
1698 | goto out_resource; | |
1699 | WRITE32(~(u32) 0); | |
1700 | } | |
1701 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
1702 | if ((buflen -= 8) < 0) | |
1703 | goto out_resource; | |
7adae489 | 1704 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
1705 | } |
1706 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
1707 | if ((buflen -= 8) < 0) | |
1708 | goto out_resource; | |
7adae489 | 1709 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
1710 | } |
1711 | if (bmval1 & FATTR4_WORD1_MODE) { | |
1712 | if ((buflen -= 4) < 0) | |
1713 | goto out_resource; | |
1714 | WRITE32(stat.mode & S_IALLUGO); | |
1715 | } | |
1716 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
1717 | if ((buflen -= 4) < 0) | |
1718 | goto out_resource; | |
1719 | WRITE32(1); | |
1720 | } | |
1721 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
1722 | if ((buflen -= 4) < 0) | |
1723 | goto out_resource; | |
1724 | WRITE32(stat.nlink); | |
1725 | } | |
1726 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
1727 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); | |
1728 | if (status == nfserr_resource) | |
1729 | goto out_resource; | |
1730 | if (status) | |
1731 | goto out; | |
1732 | } | |
1733 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
1734 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); | |
1735 | if (status == nfserr_resource) | |
1736 | goto out_resource; | |
1737 | if (status) | |
1738 | goto out; | |
1739 | } | |
1740 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
1741 | if ((buflen -= 8) < 0) | |
1742 | goto out_resource; | |
1743 | WRITE32((u32) MAJOR(stat.rdev)); | |
1744 | WRITE32((u32) MINOR(stat.rdev)); | |
1745 | } | |
1746 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
1747 | if ((buflen -= 8) < 0) | |
1748 | goto out_resource; | |
1749 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
1750 | WRITE64(dummy64); | |
1751 | } | |
1752 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
1753 | if ((buflen -= 8) < 0) | |
1754 | goto out_resource; | |
1755 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
1756 | WRITE64(dummy64); | |
1757 | } | |
1758 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
1759 | if ((buflen -= 8) < 0) | |
1760 | goto out_resource; | |
1761 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
1762 | WRITE64(dummy64); | |
1763 | } | |
1764 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
1765 | if ((buflen -= 8) < 0) | |
1766 | goto out_resource; | |
1767 | dummy64 = (u64)stat.blocks << 9; | |
1768 | WRITE64(dummy64); | |
1769 | } | |
1770 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
1771 | if ((buflen -= 12) < 0) | |
1772 | goto out_resource; | |
1773 | WRITE32(0); | |
1774 | WRITE32(stat.atime.tv_sec); | |
1775 | WRITE32(stat.atime.tv_nsec); | |
1776 | } | |
1777 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
1778 | if ((buflen -= 12) < 0) | |
1779 | goto out_resource; | |
1780 | WRITE32(0); | |
1781 | WRITE32(1); | |
1782 | WRITE32(0); | |
1783 | } | |
1784 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
1785 | if ((buflen -= 12) < 0) | |
1786 | goto out_resource; | |
1787 | WRITE32(0); | |
1788 | WRITE32(stat.ctime.tv_sec); | |
1789 | WRITE32(stat.ctime.tv_nsec); | |
1790 | } | |
1791 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
1792 | if ((buflen -= 12) < 0) | |
1793 | goto out_resource; | |
1794 | WRITE32(0); | |
1795 | WRITE32(stat.mtime.tv_sec); | |
1796 | WRITE32(stat.mtime.tv_nsec); | |
1797 | } | |
1798 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
1799 | struct dentry *mnt_pnt, *mnt_root; | |
1800 | ||
1801 | if ((buflen -= 8) < 0) | |
1802 | goto out_resource; | |
1803 | mnt_root = exp->ex_mnt->mnt_root; | |
1804 | if (mnt_root->d_inode == dentry->d_inode) { | |
1805 | mnt_pnt = exp->ex_mnt->mnt_mountpoint; | |
1806 | WRITE64((u64) mnt_pnt->d_inode->i_ino); | |
1807 | } else | |
1808 | WRITE64((u64) stat.ino); | |
1809 | } | |
1810 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
1811 | *countp = p - buffer; | |
1812 | status = nfs_ok; | |
1813 | ||
1814 | out: | |
1815 | nfs4_acl_free(acl); | |
1816 | if (fhp == &tempfh) | |
1817 | fh_put(&tempfh); | |
1818 | return status; | |
1819 | out_nfserr: | |
1820 | status = nfserrno(status); | |
1821 | goto out; | |
1822 | out_resource: | |
1823 | *countp = 0; | |
1824 | status = nfserr_resource; | |
1825 | goto out; | |
1826 | out_serverfault: | |
1827 | status = nfserr_serverfault; | |
1828 | goto out; | |
1829 | } | |
1830 | ||
1831 | static int | |
1832 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, | |
1833 | const char *name, int namlen, u32 *p, int *buflen) | |
1834 | { | |
1835 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
1836 | struct dentry *dentry; | |
1837 | int nfserr; | |
1838 | ||
1839 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
1840 | if (IS_ERR(dentry)) | |
1841 | return nfserrno(PTR_ERR(dentry)); | |
1842 | ||
1843 | exp_get(exp); | |
1844 | if (d_mountpoint(dentry)) { | |
1845 | if (nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp)) { | |
1846 | /* | |
1847 | * -EAGAIN is the only error returned from | |
1848 | * nfsd_cross_mnt() and it indicates that an | |
1849 | * up-call has been initiated to fill in the export | |
1850 | * options on exp. When the answer comes back, | |
1851 | * this call will be retried. | |
1852 | */ | |
1853 | nfserr = nfserr_dropit; | |
1854 | goto out_put; | |
1855 | } | |
1856 | ||
1857 | } | |
1858 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, | |
1859 | cd->rd_rqstp); | |
1860 | out_put: | |
1861 | dput(dentry); | |
1862 | exp_put(exp); | |
1863 | return nfserr; | |
1864 | } | |
1865 | ||
1866 | static u32 * | |
1867 | nfsd4_encode_rdattr_error(u32 *p, int buflen, int nfserr) | |
1868 | { | |
1869 | u32 *attrlenp; | |
1870 | ||
1871 | if (buflen < 6) | |
1872 | return NULL; | |
1873 | *p++ = htonl(2); | |
1874 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
1875 | *p++ = htonl(0); /* bmval1 */ | |
1876 | ||
1877 | attrlenp = p++; | |
1878 | *p++ = nfserr; /* no htonl */ | |
1879 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
1880 | return p; | |
1881 | } | |
1882 | ||
1883 | static int | |
1884 | nfsd4_encode_dirent(struct readdir_cd *ccd, const char *name, int namlen, | |
1885 | loff_t offset, ino_t ino, unsigned int d_type) | |
1886 | { | |
1887 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); | |
1888 | int buflen; | |
1889 | u32 *p = cd->buffer; | |
1890 | int nfserr = nfserr_toosmall; | |
1891 | ||
1892 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
1893 | if (name && isdotent(name, namlen)) { | |
1894 | cd->common.err = nfs_ok; | |
1895 | return 0; | |
1896 | } | |
1897 | ||
1898 | if (cd->offset) | |
1899 | xdr_encode_hyper(cd->offset, (u64) offset); | |
1900 | ||
1901 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); | |
1902 | if (buflen < 0) | |
1903 | goto fail; | |
1904 | ||
1905 | *p++ = xdr_one; /* mark entry present */ | |
1906 | cd->offset = p; /* remember pointer */ | |
1907 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ | |
1908 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
1909 | ||
1910 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen); | |
1911 | switch (nfserr) { | |
1912 | case nfs_ok: | |
1913 | p += buflen; | |
1914 | break; | |
1915 | case nfserr_resource: | |
1916 | nfserr = nfserr_toosmall; | |
1917 | goto fail; | |
1918 | case nfserr_dropit: | |
1919 | goto fail; | |
1920 | default: | |
1921 | /* | |
1922 | * If the client requested the RDATTR_ERROR attribute, | |
1923 | * we stuff the error code into this attribute | |
1924 | * and continue. If this attribute was not requested, | |
1925 | * then in accordance with the spec, we fail the | |
1926 | * entire READDIR operation(!) | |
1927 | */ | |
1928 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
1929 | goto fail; | |
1da177e4 | 1930 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
34081efc FI |
1931 | if (p == NULL) { |
1932 | nfserr = nfserr_toosmall; | |
1da177e4 | 1933 | goto fail; |
34081efc | 1934 | } |
1da177e4 LT |
1935 | } |
1936 | cd->buflen -= (p - cd->buffer); | |
1937 | cd->buffer = p; | |
1938 | cd->common.err = nfs_ok; | |
1939 | return 0; | |
1940 | fail: | |
1941 | cd->common.err = nfserr; | |
1942 | return -EINVAL; | |
1943 | } | |
1944 | ||
1945 | static void | |
1946 | nfsd4_encode_access(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_access *access) | |
1947 | { | |
1948 | ENCODE_HEAD; | |
1949 | ||
1950 | if (!nfserr) { | |
1951 | RESERVE_SPACE(8); | |
1952 | WRITE32(access->ac_supported); | |
1953 | WRITE32(access->ac_resp_access); | |
1954 | ADJUST_ARGS(); | |
1955 | } | |
1956 | } | |
1957 | ||
1958 | static void | |
1959 | nfsd4_encode_close(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_close *close) | |
1960 | { | |
1961 | ENCODE_SEQID_OP_HEAD; | |
1962 | ||
1963 | if (!nfserr) { | |
1964 | RESERVE_SPACE(sizeof(stateid_t)); | |
1965 | WRITE32(close->cl_stateid.si_generation); | |
1966 | WRITEMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
1967 | ADJUST_ARGS(); | |
1968 | } | |
1969 | ENCODE_SEQID_OP_TAIL(close->cl_stateowner); | |
1970 | } | |
1971 | ||
1972 | ||
1973 | static void | |
1974 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_commit *commit) | |
1975 | { | |
1976 | ENCODE_HEAD; | |
1977 | ||
1978 | if (!nfserr) { | |
1979 | RESERVE_SPACE(8); | |
1980 | WRITEMEM(commit->co_verf.data, 8); | |
1981 | ADJUST_ARGS(); | |
1982 | } | |
1983 | } | |
1984 | ||
1985 | static void | |
1986 | nfsd4_encode_create(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_create *create) | |
1987 | { | |
1988 | ENCODE_HEAD; | |
1989 | ||
1990 | if (!nfserr) { | |
1991 | RESERVE_SPACE(32); | |
1992 | WRITECINFO(create->cr_cinfo); | |
1993 | WRITE32(2); | |
1994 | WRITE32(create->cr_bmval[0]); | |
1995 | WRITE32(create->cr_bmval[1]); | |
1996 | ADJUST_ARGS(); | |
1997 | } | |
1998 | } | |
1999 | ||
2000 | static int | |
2001 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_getattr *getattr) | |
2002 | { | |
2003 | struct svc_fh *fhp = getattr->ga_fhp; | |
2004 | int buflen; | |
2005 | ||
2006 | if (nfserr) | |
2007 | return nfserr; | |
2008 | ||
2009 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); | |
2010 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, | |
2011 | resp->p, &buflen, getattr->ga_bmval, | |
2012 | resp->rqstp); | |
1da177e4 LT |
2013 | if (!nfserr) |
2014 | resp->p += buflen; | |
2015 | return nfserr; | |
2016 | } | |
2017 | ||
2018 | static void | |
2019 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, int nfserr, struct svc_fh *fhp) | |
2020 | { | |
2021 | unsigned int len; | |
2022 | ENCODE_HEAD; | |
2023 | ||
2024 | if (!nfserr) { | |
2025 | len = fhp->fh_handle.fh_size; | |
2026 | RESERVE_SPACE(len + 4); | |
2027 | WRITE32(len); | |
2028 | WRITEMEM(&fhp->fh_handle.fh_base, len); | |
2029 | ADJUST_ARGS(); | |
2030 | } | |
2031 | } | |
2032 | ||
2033 | /* | |
2034 | * Including all fields other than the name, a LOCK4denied structure requires | |
2035 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
2036 | */ | |
2037 | static void | |
2038 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) | |
2039 | { | |
2040 | ENCODE_HEAD; | |
2041 | ||
2042 | RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0)); | |
2043 | WRITE64(ld->ld_start); | |
2044 | WRITE64(ld->ld_length); | |
2045 | WRITE32(ld->ld_type); | |
2046 | if (ld->ld_sop) { | |
2047 | WRITEMEM(&ld->ld_clientid, 8); | |
2048 | WRITE32(ld->ld_sop->so_owner.len); | |
2049 | WRITEMEM(ld->ld_sop->so_owner.data, ld->ld_sop->so_owner.len); | |
2050 | kref_put(&ld->ld_sop->so_ref, nfs4_free_stateowner); | |
2051 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ | |
2052 | WRITE64((u64)0); /* clientid */ | |
2053 | WRITE32(0); /* length of owner name */ | |
2054 | } | |
2055 | ADJUST_ARGS(); | |
2056 | } | |
2057 | ||
2058 | static void | |
2059 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_lock *lock) | |
2060 | { | |
1da177e4 LT |
2061 | ENCODE_SEQID_OP_HEAD; |
2062 | ||
2063 | if (!nfserr) { | |
2064 | RESERVE_SPACE(4 + sizeof(stateid_t)); | |
2065 | WRITE32(lock->lk_resp_stateid.si_generation); | |
2066 | WRITEMEM(&lock->lk_resp_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
2067 | ADJUST_ARGS(); | |
2068 | } else if (nfserr == nfserr_denied) | |
2069 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); | |
2070 | ||
3a65588a | 2071 | ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner); |
1da177e4 LT |
2072 | } |
2073 | ||
2074 | static void | |
2075 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_lockt *lockt) | |
2076 | { | |
2077 | if (nfserr == nfserr_denied) | |
2078 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); | |
2079 | } | |
2080 | ||
2081 | static void | |
2082 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_locku *locku) | |
2083 | { | |
2084 | ENCODE_SEQID_OP_HEAD; | |
2085 | ||
2086 | if (!nfserr) { | |
2087 | RESERVE_SPACE(sizeof(stateid_t)); | |
2088 | WRITE32(locku->lu_stateid.si_generation); | |
2089 | WRITEMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
2090 | ADJUST_ARGS(); | |
2091 | } | |
2092 | ||
2093 | ENCODE_SEQID_OP_TAIL(locku->lu_stateowner); | |
2094 | } | |
2095 | ||
2096 | ||
2097 | static void | |
2098 | nfsd4_encode_link(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_link *link) | |
2099 | { | |
2100 | ENCODE_HEAD; | |
2101 | ||
2102 | if (!nfserr) { | |
2103 | RESERVE_SPACE(20); | |
2104 | WRITECINFO(link->li_cinfo); | |
2105 | ADJUST_ARGS(); | |
2106 | } | |
2107 | } | |
2108 | ||
2109 | ||
2110 | static void | |
2111 | nfsd4_encode_open(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_open *open) | |
2112 | { | |
2113 | ENCODE_SEQID_OP_HEAD; | |
2114 | ||
2115 | if (nfserr) | |
2116 | goto out; | |
2117 | ||
2118 | RESERVE_SPACE(36 + sizeof(stateid_t)); | |
2119 | WRITE32(open->op_stateid.si_generation); | |
2120 | WRITEMEM(&open->op_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
2121 | WRITECINFO(open->op_cinfo); | |
2122 | WRITE32(open->op_rflags); | |
2123 | WRITE32(2); | |
2124 | WRITE32(open->op_bmval[0]); | |
2125 | WRITE32(open->op_bmval[1]); | |
2126 | WRITE32(open->op_delegate_type); | |
2127 | ADJUST_ARGS(); | |
2128 | ||
2129 | switch (open->op_delegate_type) { | |
2130 | case NFS4_OPEN_DELEGATE_NONE: | |
2131 | break; | |
2132 | case NFS4_OPEN_DELEGATE_READ: | |
2133 | RESERVE_SPACE(20 + sizeof(stateid_t)); | |
2134 | WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t)); | |
7b190fec | 2135 | WRITE32(open->op_recall); |
1da177e4 LT |
2136 | |
2137 | /* | |
2138 | * TODO: ACE's in delegations | |
2139 | */ | |
2140 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2141 | WRITE32(0); | |
2142 | WRITE32(0); | |
2143 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2144 | ADJUST_ARGS(); | |
2145 | break; | |
2146 | case NFS4_OPEN_DELEGATE_WRITE: | |
2147 | RESERVE_SPACE(32 + sizeof(stateid_t)); | |
2148 | WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t)); | |
2149 | WRITE32(0); | |
2150 | ||
2151 | /* | |
2152 | * TODO: space_limit's in delegations | |
2153 | */ | |
2154 | WRITE32(NFS4_LIMIT_SIZE); | |
2155 | WRITE32(~(u32)0); | |
2156 | WRITE32(~(u32)0); | |
2157 | ||
2158 | /* | |
2159 | * TODO: ACE's in delegations | |
2160 | */ | |
2161 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2162 | WRITE32(0); | |
2163 | WRITE32(0); | |
2164 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2165 | ADJUST_ARGS(); | |
2166 | break; | |
2167 | default: | |
2168 | BUG(); | |
2169 | } | |
2170 | /* XXX save filehandle here */ | |
2171 | out: | |
2172 | ENCODE_SEQID_OP_TAIL(open->op_stateowner); | |
2173 | } | |
2174 | ||
2175 | static void | |
2176 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_open_confirm *oc) | |
2177 | { | |
2178 | ENCODE_SEQID_OP_HEAD; | |
2179 | ||
2180 | if (!nfserr) { | |
2181 | RESERVE_SPACE(sizeof(stateid_t)); | |
2182 | WRITE32(oc->oc_resp_stateid.si_generation); | |
2183 | WRITEMEM(&oc->oc_resp_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
2184 | ADJUST_ARGS(); | |
2185 | } | |
2186 | ||
2187 | ENCODE_SEQID_OP_TAIL(oc->oc_stateowner); | |
2188 | } | |
2189 | ||
2190 | static void | |
2191 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_open_downgrade *od) | |
2192 | { | |
2193 | ENCODE_SEQID_OP_HEAD; | |
2194 | ||
2195 | if (!nfserr) { | |
2196 | RESERVE_SPACE(sizeof(stateid_t)); | |
2197 | WRITE32(od->od_stateid.si_generation); | |
2198 | WRITEMEM(&od->od_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
2199 | ADJUST_ARGS(); | |
2200 | } | |
2201 | ||
2202 | ENCODE_SEQID_OP_TAIL(od->od_stateowner); | |
2203 | } | |
2204 | ||
2205 | static int | |
44524359 N |
2206 | nfsd4_encode_read(struct nfsd4_compoundres *resp, int nfserr, |
2207 | struct nfsd4_read *read) | |
1da177e4 LT |
2208 | { |
2209 | u32 eof; | |
2210 | int v, pn; | |
2211 | unsigned long maxcount; | |
2212 | long len; | |
2213 | ENCODE_HEAD; | |
2214 | ||
2215 | if (nfserr) | |
2216 | return nfserr; | |
2217 | if (resp->xbuf->page_len) | |
2218 | return nfserr_resource; | |
2219 | ||
2220 | RESERVE_SPACE(8); /* eof flag and byte count */ | |
2221 | ||
7adae489 | 2222 | maxcount = svc_max_payload(resp->rqstp); |
1da177e4 LT |
2223 | if (maxcount > read->rd_length) |
2224 | maxcount = read->rd_length; | |
2225 | ||
2226 | len = maxcount; | |
2227 | v = 0; | |
2228 | while (len > 0) { | |
44524359 | 2229 | pn = resp->rqstp->rq_resused++; |
3cc03b16 | 2230 | resp->rqstp->rq_vec[v].iov_base = |
44524359 | 2231 | page_address(resp->rqstp->rq_respages[pn]); |
3cc03b16 | 2232 | resp->rqstp->rq_vec[v].iov_len = |
44524359 | 2233 | len < PAGE_SIZE ? len : PAGE_SIZE; |
1da177e4 LT |
2234 | v++; |
2235 | len -= PAGE_SIZE; | |
2236 | } | |
2237 | read->rd_vlen = v; | |
2238 | ||
2239 | nfserr = nfsd_read(read->rd_rqstp, read->rd_fhp, read->rd_filp, | |
3cc03b16 | 2240 | read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, |
1da177e4 LT |
2241 | &maxcount); |
2242 | ||
2243 | if (nfserr == nfserr_symlink) | |
2244 | nfserr = nfserr_inval; | |
2245 | if (nfserr) | |
2246 | return nfserr; | |
44524359 N |
2247 | eof = (read->rd_offset + maxcount >= |
2248 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 LT |
2249 | |
2250 | WRITE32(eof); | |
2251 | WRITE32(maxcount); | |
2252 | ADJUST_ARGS(); | |
6ed6decc N |
2253 | resp->xbuf->head[0].iov_len = (char*)p |
2254 | - (char*)resp->xbuf->head[0].iov_base; | |
1da177e4 LT |
2255 | resp->xbuf->page_len = maxcount; |
2256 | ||
6ed6decc | 2257 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2258 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2259 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2260 | if (maxcount&3) { |
6ed6decc N |
2261 | RESERVE_SPACE(4); |
2262 | WRITE32(0); | |
1da177e4 LT |
2263 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2264 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2265 | ADJUST_ARGS(); |
1da177e4 LT |
2266 | } |
2267 | return 0; | |
2268 | } | |
2269 | ||
2270 | static int | |
2271 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_readlink *readlink) | |
2272 | { | |
2273 | int maxcount; | |
2274 | char *page; | |
2275 | ENCODE_HEAD; | |
2276 | ||
2277 | if (nfserr) | |
2278 | return nfserr; | |
2279 | if (resp->xbuf->page_len) | |
2280 | return nfserr_resource; | |
2281 | ||
44524359 | 2282 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
1da177e4 LT |
2283 | |
2284 | maxcount = PAGE_SIZE; | |
2285 | RESERVE_SPACE(4); | |
2286 | ||
2287 | /* | |
2288 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
2289 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
2290 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
2291 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
2292 | */ | |
2293 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); | |
2294 | if (nfserr == nfserr_isdir) | |
2295 | return nfserr_inval; | |
2296 | if (nfserr) | |
2297 | return nfserr; | |
2298 | ||
2299 | WRITE32(maxcount); | |
2300 | ADJUST_ARGS(); | |
6ed6decc N |
2301 | resp->xbuf->head[0].iov_len = (char*)p |
2302 | - (char*)resp->xbuf->head[0].iov_base; | |
2303 | resp->xbuf->page_len = maxcount; | |
1da177e4 | 2304 | |
6ed6decc | 2305 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2306 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2307 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2308 | if (maxcount&3) { |
6ed6decc N |
2309 | RESERVE_SPACE(4); |
2310 | WRITE32(0); | |
1da177e4 LT |
2311 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2312 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2313 | ADJUST_ARGS(); |
1da177e4 LT |
2314 | } |
2315 | return 0; | |
2316 | } | |
2317 | ||
2318 | static int | |
2319 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_readdir *readdir) | |
2320 | { | |
2321 | int maxcount; | |
2322 | loff_t offset; | |
bb6e8a9f | 2323 | u32 *page, *savep, *tailbase; |
1da177e4 LT |
2324 | ENCODE_HEAD; |
2325 | ||
2326 | if (nfserr) | |
2327 | return nfserr; | |
2328 | if (resp->xbuf->page_len) | |
2329 | return nfserr_resource; | |
2330 | ||
2331 | RESERVE_SPACE(8); /* verifier */ | |
2332 | savep = p; | |
2333 | ||
2334 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
2335 | WRITE32(0); | |
2336 | WRITE32(0); | |
2337 | ADJUST_ARGS(); | |
2338 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; | |
bb6e8a9f | 2339 | tailbase = p; |
1da177e4 LT |
2340 | |
2341 | maxcount = PAGE_SIZE; | |
2342 | if (maxcount > readdir->rd_maxcount) | |
2343 | maxcount = readdir->rd_maxcount; | |
2344 | ||
2345 | /* | |
2346 | * Convert from bytes to words, account for the two words already | |
2347 | * written, make sure to leave two words at the end for the next | |
2348 | * pointer and eof field. | |
2349 | */ | |
2350 | maxcount = (maxcount >> 2) - 4; | |
2351 | if (maxcount < 0) { | |
2352 | nfserr = nfserr_toosmall; | |
2353 | goto err_no_verf; | |
2354 | } | |
2355 | ||
44524359 | 2356 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
1da177e4 LT |
2357 | readdir->common.err = 0; |
2358 | readdir->buflen = maxcount; | |
2359 | readdir->buffer = page; | |
2360 | readdir->offset = NULL; | |
2361 | ||
2362 | offset = readdir->rd_cookie; | |
2363 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
2364 | &offset, | |
2365 | &readdir->common, nfsd4_encode_dirent); | |
2366 | if (nfserr == nfs_ok && | |
2367 | readdir->common.err == nfserr_toosmall && | |
2368 | readdir->buffer == page) | |
2369 | nfserr = nfserr_toosmall; | |
2370 | if (nfserr == nfserr_symlink) | |
2371 | nfserr = nfserr_notdir; | |
2372 | if (nfserr) | |
2373 | goto err_no_verf; | |
2374 | ||
2375 | if (readdir->offset) | |
2376 | xdr_encode_hyper(readdir->offset, offset); | |
2377 | ||
2378 | p = readdir->buffer; | |
2379 | *p++ = 0; /* no more entries */ | |
2380 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
44524359 N |
2381 | resp->xbuf->page_len = ((char*)p) - (char*)page_address( |
2382 | resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); | |
1da177e4 | 2383 | |
bb6e8a9f | 2384 | /* Use rest of head for padding and remaining ops: */ |
bb6e8a9f | 2385 | resp->xbuf->tail[0].iov_base = tailbase; |
1da177e4 LT |
2386 | resp->xbuf->tail[0].iov_len = 0; |
2387 | resp->p = resp->xbuf->tail[0].iov_base; | |
bb6e8a9f | 2388 | resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; |
1da177e4 LT |
2389 | |
2390 | return 0; | |
2391 | err_no_verf: | |
2392 | p = savep; | |
2393 | ADJUST_ARGS(); | |
2394 | return nfserr; | |
2395 | } | |
2396 | ||
2397 | static void | |
2398 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_remove *remove) | |
2399 | { | |
2400 | ENCODE_HEAD; | |
2401 | ||
2402 | if (!nfserr) { | |
2403 | RESERVE_SPACE(20); | |
2404 | WRITECINFO(remove->rm_cinfo); | |
2405 | ADJUST_ARGS(); | |
2406 | } | |
2407 | } | |
2408 | ||
2409 | static void | |
2410 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_rename *rename) | |
2411 | { | |
2412 | ENCODE_HEAD; | |
2413 | ||
2414 | if (!nfserr) { | |
2415 | RESERVE_SPACE(40); | |
2416 | WRITECINFO(rename->rn_sinfo); | |
2417 | WRITECINFO(rename->rn_tinfo); | |
2418 | ADJUST_ARGS(); | |
2419 | } | |
2420 | } | |
2421 | ||
2422 | /* | |
2423 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
2424 | * regardless of the error status. | |
2425 | */ | |
2426 | static void | |
2427 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_setattr *setattr) | |
2428 | { | |
2429 | ENCODE_HEAD; | |
2430 | ||
2431 | RESERVE_SPACE(12); | |
2432 | if (nfserr) { | |
2433 | WRITE32(2); | |
2434 | WRITE32(0); | |
2435 | WRITE32(0); | |
2436 | } | |
2437 | else { | |
2438 | WRITE32(2); | |
2439 | WRITE32(setattr->sa_bmval[0]); | |
2440 | WRITE32(setattr->sa_bmval[1]); | |
2441 | } | |
2442 | ADJUST_ARGS(); | |
2443 | } | |
2444 | ||
2445 | static void | |
2446 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_setclientid *scd) | |
2447 | { | |
2448 | ENCODE_HEAD; | |
2449 | ||
2450 | if (!nfserr) { | |
2451 | RESERVE_SPACE(8 + sizeof(nfs4_verifier)); | |
2452 | WRITEMEM(&scd->se_clientid, 8); | |
2453 | WRITEMEM(&scd->se_confirm, sizeof(nfs4_verifier)); | |
2454 | ADJUST_ARGS(); | |
2455 | } | |
2456 | else if (nfserr == nfserr_clid_inuse) { | |
2457 | RESERVE_SPACE(8); | |
2458 | WRITE32(0); | |
2459 | WRITE32(0); | |
2460 | ADJUST_ARGS(); | |
2461 | } | |
2462 | } | |
2463 | ||
2464 | static void | |
2465 | nfsd4_encode_write(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_write *write) | |
2466 | { | |
2467 | ENCODE_HEAD; | |
2468 | ||
2469 | if (!nfserr) { | |
2470 | RESERVE_SPACE(16); | |
2471 | WRITE32(write->wr_bytes_written); | |
2472 | WRITE32(write->wr_how_written); | |
2473 | WRITEMEM(write->wr_verifier.data, 8); | |
2474 | ADJUST_ARGS(); | |
2475 | } | |
2476 | } | |
2477 | ||
2478 | void | |
2479 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
2480 | { | |
2481 | u32 *statp; | |
2482 | ENCODE_HEAD; | |
2483 | ||
2484 | RESERVE_SPACE(8); | |
2485 | WRITE32(op->opnum); | |
2486 | statp = p++; /* to be backfilled at the end */ | |
2487 | ADJUST_ARGS(); | |
2488 | ||
2489 | switch (op->opnum) { | |
2490 | case OP_ACCESS: | |
2491 | nfsd4_encode_access(resp, op->status, &op->u.access); | |
2492 | break; | |
2493 | case OP_CLOSE: | |
2494 | nfsd4_encode_close(resp, op->status, &op->u.close); | |
2495 | break; | |
2496 | case OP_COMMIT: | |
2497 | nfsd4_encode_commit(resp, op->status, &op->u.commit); | |
2498 | break; | |
2499 | case OP_CREATE: | |
2500 | nfsd4_encode_create(resp, op->status, &op->u.create); | |
2501 | break; | |
2502 | case OP_DELEGRETURN: | |
2503 | break; | |
2504 | case OP_GETATTR: | |
2505 | op->status = nfsd4_encode_getattr(resp, op->status, &op->u.getattr); | |
2506 | break; | |
2507 | case OP_GETFH: | |
2508 | nfsd4_encode_getfh(resp, op->status, op->u.getfh); | |
2509 | break; | |
2510 | case OP_LINK: | |
2511 | nfsd4_encode_link(resp, op->status, &op->u.link); | |
2512 | break; | |
2513 | case OP_LOCK: | |
2514 | nfsd4_encode_lock(resp, op->status, &op->u.lock); | |
2515 | break; | |
2516 | case OP_LOCKT: | |
2517 | nfsd4_encode_lockt(resp, op->status, &op->u.lockt); | |
2518 | break; | |
2519 | case OP_LOCKU: | |
2520 | nfsd4_encode_locku(resp, op->status, &op->u.locku); | |
2521 | break; | |
2522 | case OP_LOOKUP: | |
2523 | break; | |
2524 | case OP_LOOKUPP: | |
2525 | break; | |
2526 | case OP_NVERIFY: | |
2527 | break; | |
2528 | case OP_OPEN: | |
2529 | nfsd4_encode_open(resp, op->status, &op->u.open); | |
2530 | break; | |
2531 | case OP_OPEN_CONFIRM: | |
2532 | nfsd4_encode_open_confirm(resp, op->status, &op->u.open_confirm); | |
2533 | break; | |
2534 | case OP_OPEN_DOWNGRADE: | |
2535 | nfsd4_encode_open_downgrade(resp, op->status, &op->u.open_downgrade); | |
2536 | break; | |
2537 | case OP_PUTFH: | |
2538 | break; | |
2539 | case OP_PUTROOTFH: | |
2540 | break; | |
2541 | case OP_READ: | |
2542 | op->status = nfsd4_encode_read(resp, op->status, &op->u.read); | |
2543 | break; | |
2544 | case OP_READDIR: | |
2545 | op->status = nfsd4_encode_readdir(resp, op->status, &op->u.readdir); | |
2546 | break; | |
2547 | case OP_READLINK: | |
2548 | op->status = nfsd4_encode_readlink(resp, op->status, &op->u.readlink); | |
2549 | break; | |
2550 | case OP_REMOVE: | |
2551 | nfsd4_encode_remove(resp, op->status, &op->u.remove); | |
2552 | break; | |
2553 | case OP_RENAME: | |
2554 | nfsd4_encode_rename(resp, op->status, &op->u.rename); | |
2555 | break; | |
2556 | case OP_RENEW: | |
2557 | break; | |
2558 | case OP_RESTOREFH: | |
2559 | break; | |
2560 | case OP_SAVEFH: | |
2561 | break; | |
2562 | case OP_SETATTR: | |
2563 | nfsd4_encode_setattr(resp, op->status, &op->u.setattr); | |
2564 | break; | |
2565 | case OP_SETCLIENTID: | |
2566 | nfsd4_encode_setclientid(resp, op->status, &op->u.setclientid); | |
2567 | break; | |
2568 | case OP_SETCLIENTID_CONFIRM: | |
2569 | break; | |
2570 | case OP_VERIFY: | |
2571 | break; | |
2572 | case OP_WRITE: | |
2573 | nfsd4_encode_write(resp, op->status, &op->u.write); | |
2574 | break; | |
2575 | case OP_RELEASE_LOCKOWNER: | |
2576 | break; | |
2577 | default: | |
2578 | break; | |
2579 | } | |
2580 | ||
2581 | /* | |
2582 | * Note: We write the status directly, instead of using WRITE32(), | |
2583 | * since it is already in network byte order. | |
2584 | */ | |
2585 | *statp = op->status; | |
2586 | } | |
2587 | ||
2588 | /* | |
2589 | * Encode the reply stored in the stateowner reply cache | |
2590 | * | |
2591 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
2592 | * previously sent already encoded operation. | |
2593 | * | |
2594 | * called with nfs4_lock_state() held | |
2595 | */ | |
2596 | void | |
2597 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
2598 | { | |
2599 | ENCODE_HEAD; | |
2600 | struct nfs4_replay *rp = op->replay; | |
2601 | ||
2602 | BUG_ON(!rp); | |
2603 | ||
2604 | RESERVE_SPACE(8); | |
2605 | WRITE32(op->opnum); | |
2606 | *p++ = rp->rp_status; /* already xdr'ed */ | |
2607 | ADJUST_ARGS(); | |
2608 | ||
2609 | RESERVE_SPACE(rp->rp_buflen); | |
2610 | WRITEMEM(rp->rp_buf, rp->rp_buflen); | |
2611 | ADJUST_ARGS(); | |
2612 | } | |
2613 | ||
2614 | /* | |
2615 | * END OF "GENERIC" ENCODE ROUTINES. | |
2616 | */ | |
2617 | ||
2618 | int | |
2619 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, u32 *p, void *dummy) | |
2620 | { | |
2621 | return xdr_ressize_check(rqstp, p); | |
2622 | } | |
2623 | ||
2624 | void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args) | |
2625 | { | |
2626 | if (args->ops != args->iops) { | |
2627 | kfree(args->ops); | |
2628 | args->ops = args->iops; | |
2629 | } | |
f99d49ad JJ |
2630 | kfree(args->tmpp); |
2631 | args->tmpp = NULL; | |
1da177e4 LT |
2632 | while (args->to_free) { |
2633 | struct tmpbuf *tb = args->to_free; | |
2634 | args->to_free = tb->next; | |
2635 | tb->release(tb->buf); | |
2636 | kfree(tb); | |
2637 | } | |
2638 | } | |
2639 | ||
2640 | int | |
2641 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, u32 *p, struct nfsd4_compoundargs *args) | |
2642 | { | |
2643 | int status; | |
2644 | ||
2645 | args->p = p; | |
2646 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
2647 | args->pagelist = rqstp->rq_arg.pages; | |
2648 | args->pagelen = rqstp->rq_arg.page_len; | |
2649 | args->tmpp = NULL; | |
2650 | args->to_free = NULL; | |
2651 | args->ops = args->iops; | |
2652 | args->rqstp = rqstp; | |
2653 | ||
2654 | status = nfsd4_decode_compound(args); | |
2655 | if (status) { | |
2656 | nfsd4_release_compoundargs(args); | |
2657 | } | |
2658 | return !status; | |
2659 | } | |
2660 | ||
2661 | int | |
2662 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, u32 *p, struct nfsd4_compoundres *resp) | |
2663 | { | |
2664 | /* | |
2665 | * All that remains is to write the tag and operation count... | |
2666 | */ | |
2667 | struct kvec *iov; | |
2668 | p = resp->tagp; | |
2669 | *p++ = htonl(resp->taglen); | |
2670 | memcpy(p, resp->tag, resp->taglen); | |
2671 | p += XDR_QUADLEN(resp->taglen); | |
2672 | *p++ = htonl(resp->opcnt); | |
2673 | ||
2674 | if (rqstp->rq_res.page_len) | |
2675 | iov = &rqstp->rq_res.tail[0]; | |
2676 | else | |
2677 | iov = &rqstp->rq_res.head[0]; | |
2678 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; | |
2679 | BUG_ON(iov->iov_len > PAGE_SIZE); | |
2680 | return 1; | |
2681 | } | |
2682 | ||
2683 | /* | |
2684 | * Local variables: | |
2685 | * c-basic-offset: 8 | |
2686 | * End: | |
2687 | */ |