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 | ||
b37ad28b AV |
71 | static __be32 |
72 | check_filename(char *str, int len, __be32 err) | |
1da177e4 LT |
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 \ | |
2ebbc012 | 97 | __be32 *p; \ |
b37ad28b | 98 | __be32 status |
1da177e4 LT |
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 | ||
2ebbc012 | 147 | static __be32 *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; | |
2ebbc012 | 153 | __be32 *p; |
1da177e4 LT |
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 | ||
2ebbc012 | 200 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *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 | ||
b37ad28b | 220 | static __be32 |
1da177e4 LT |
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 | ||
b37ad28b | 243 | static __be32 |
1da177e4 LT |
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; | |
b8dd7b9a | 250 | int host_err; |
1da177e4 LT |
251 | |
252 | DECODE_HEAD; | |
253 | iattr->ia_valid = 0; | |
254 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
255 | return status; | |
256 | ||
257 | /* | |
258 | * According to spec, unsupported attributes return ERR_NOTSUPP; | |
259 | * read-only attributes return ERR_INVAL. | |
260 | */ | |
261 | if ((bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) || (bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1)) | |
262 | return nfserr_attrnotsupp; | |
263 | if ((bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0) || (bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1)) | |
264 | return nfserr_inval; | |
265 | ||
266 | READ_BUF(4); | |
267 | READ32(expected_len); | |
268 | ||
269 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
270 | READ_BUF(8); | |
271 | len += 8; | |
272 | READ64(iattr->ia_size); | |
273 | iattr->ia_valid |= ATTR_SIZE; | |
274 | } | |
275 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
276 | int nace, i; | |
277 | struct nfs4_ace ace; | |
278 | ||
279 | READ_BUF(4); len += 4; | |
280 | READ32(nace); | |
281 | ||
282 | *acl = nfs4_acl_new(); | |
283 | if (*acl == NULL) { | |
b8dd7b9a | 284 | host_err = -ENOMEM; |
1da177e4 LT |
285 | goto out_nfserr; |
286 | } | |
287 | defer_free(argp, (void (*)(const void *))nfs4_acl_free, *acl); | |
288 | ||
289 | for (i = 0; i < nace; i++) { | |
290 | READ_BUF(16); len += 16; | |
291 | READ32(ace.type); | |
292 | READ32(ace.flag); | |
293 | READ32(ace.access_mask); | |
294 | READ32(dummy32); | |
295 | READ_BUF(dummy32); | |
296 | len += XDR_QUADLEN(dummy32) << 2; | |
297 | READMEM(buf, dummy32); | |
298 | ace.whotype = nfs4_acl_get_whotype(buf, dummy32); | |
b8dd7b9a | 299 | host_err = 0; |
1da177e4 LT |
300 | if (ace.whotype != NFS4_ACL_WHO_NAMED) |
301 | ace.who = 0; | |
302 | else if (ace.flag & NFS4_ACE_IDENTIFIER_GROUP) | |
b8dd7b9a | 303 | host_err = nfsd_map_name_to_gid(argp->rqstp, |
1da177e4 LT |
304 | buf, dummy32, &ace.who); |
305 | else | |
b8dd7b9a | 306 | host_err = nfsd_map_name_to_uid(argp->rqstp, |
1da177e4 | 307 | buf, dummy32, &ace.who); |
b8dd7b9a | 308 | if (host_err) |
1da177e4 | 309 | goto out_nfserr; |
b8dd7b9a | 310 | host_err = nfs4_acl_add_ace(*acl, ace.type, ace.flag, |
b905b7b0 | 311 | ace.access_mask, ace.whotype, ace.who); |
b8dd7b9a | 312 | if (host_err) |
1da177e4 | 313 | goto out_nfserr; |
1da177e4 LT |
314 | } |
315 | } else | |
316 | *acl = NULL; | |
317 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
318 | READ_BUF(4); | |
319 | len += 4; | |
320 | READ32(iattr->ia_mode); | |
321 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); | |
322 | iattr->ia_valid |= ATTR_MODE; | |
323 | } | |
324 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
325 | READ_BUF(4); | |
326 | len += 4; | |
327 | READ32(dummy32); | |
328 | READ_BUF(dummy32); | |
329 | len += (XDR_QUADLEN(dummy32) << 2); | |
330 | READMEM(buf, dummy32); | |
b8dd7b9a | 331 | if ((host_err = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
1da177e4 LT |
332 | goto out_nfserr; |
333 | iattr->ia_valid |= ATTR_UID; | |
334 | } | |
335 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
336 | READ_BUF(4); | |
337 | len += 4; | |
338 | READ32(dummy32); | |
339 | READ_BUF(dummy32); | |
340 | len += (XDR_QUADLEN(dummy32) << 2); | |
341 | READMEM(buf, dummy32); | |
b8dd7b9a | 342 | if ((host_err = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
1da177e4 LT |
343 | goto out_nfserr; |
344 | iattr->ia_valid |= ATTR_GID; | |
345 | } | |
346 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
347 | READ_BUF(4); | |
348 | len += 4; | |
349 | READ32(dummy32); | |
350 | switch (dummy32) { | |
351 | case NFS4_SET_TO_CLIENT_TIME: | |
352 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
353 | all 32 bits of 'nseconds'. */ | |
354 | READ_BUF(12); | |
355 | len += 12; | |
356 | READ32(dummy32); | |
357 | if (dummy32) | |
358 | return nfserr_inval; | |
359 | READ32(iattr->ia_atime.tv_sec); | |
360 | READ32(iattr->ia_atime.tv_nsec); | |
361 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) | |
362 | return nfserr_inval; | |
363 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); | |
364 | break; | |
365 | case NFS4_SET_TO_SERVER_TIME: | |
366 | iattr->ia_valid |= ATTR_ATIME; | |
367 | break; | |
368 | default: | |
369 | goto xdr_error; | |
370 | } | |
371 | } | |
372 | if (bmval[1] & FATTR4_WORD1_TIME_METADATA) { | |
373 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
374 | all 32 bits of 'nseconds'. */ | |
375 | READ_BUF(12); | |
376 | len += 12; | |
377 | READ32(dummy32); | |
378 | if (dummy32) | |
379 | return nfserr_inval; | |
380 | READ32(iattr->ia_ctime.tv_sec); | |
381 | READ32(iattr->ia_ctime.tv_nsec); | |
382 | if (iattr->ia_ctime.tv_nsec >= (u32)1000000000) | |
383 | return nfserr_inval; | |
384 | iattr->ia_valid |= ATTR_CTIME; | |
385 | } | |
386 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { | |
387 | READ_BUF(4); | |
388 | len += 4; | |
389 | READ32(dummy32); | |
390 | switch (dummy32) { | |
391 | case NFS4_SET_TO_CLIENT_TIME: | |
392 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
393 | all 32 bits of 'nseconds'. */ | |
394 | READ_BUF(12); | |
395 | len += 12; | |
396 | READ32(dummy32); | |
397 | if (dummy32) | |
398 | return nfserr_inval; | |
399 | READ32(iattr->ia_mtime.tv_sec); | |
400 | READ32(iattr->ia_mtime.tv_nsec); | |
401 | if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) | |
402 | return nfserr_inval; | |
403 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); | |
404 | break; | |
405 | case NFS4_SET_TO_SERVER_TIME: | |
406 | iattr->ia_valid |= ATTR_MTIME; | |
407 | break; | |
408 | default: | |
409 | goto xdr_error; | |
410 | } | |
411 | } | |
412 | if (len != expected_len) | |
413 | goto xdr_error; | |
414 | ||
415 | DECODE_TAIL; | |
416 | ||
417 | out_nfserr: | |
b8dd7b9a | 418 | status = nfserrno(host_err); |
1da177e4 LT |
419 | goto out; |
420 | } | |
421 | ||
b37ad28b | 422 | static __be32 |
1da177e4 LT |
423 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
424 | { | |
425 | DECODE_HEAD; | |
426 | ||
427 | READ_BUF(4); | |
428 | READ32(access->ac_req_access); | |
429 | ||
430 | DECODE_TAIL; | |
431 | } | |
432 | ||
b37ad28b | 433 | static __be32 |
1da177e4 LT |
434 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
435 | { | |
436 | DECODE_HEAD; | |
437 | ||
438 | close->cl_stateowner = NULL; | |
439 | READ_BUF(4 + sizeof(stateid_t)); | |
440 | READ32(close->cl_seqid); | |
441 | READ32(close->cl_stateid.si_generation); | |
442 | COPYMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
443 | ||
444 | DECODE_TAIL; | |
445 | } | |
446 | ||
447 | ||
b37ad28b | 448 | static __be32 |
1da177e4 LT |
449 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
450 | { | |
451 | DECODE_HEAD; | |
452 | ||
453 | READ_BUF(12); | |
454 | READ64(commit->co_offset); | |
455 | READ32(commit->co_count); | |
456 | ||
457 | DECODE_TAIL; | |
458 | } | |
459 | ||
b37ad28b | 460 | static __be32 |
1da177e4 LT |
461 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
462 | { | |
463 | DECODE_HEAD; | |
464 | ||
465 | READ_BUF(4); | |
466 | READ32(create->cr_type); | |
467 | switch (create->cr_type) { | |
468 | case NF4LNK: | |
469 | READ_BUF(4); | |
470 | READ32(create->cr_linklen); | |
471 | READ_BUF(create->cr_linklen); | |
472 | SAVEMEM(create->cr_linkname, create->cr_linklen); | |
473 | break; | |
474 | case NF4BLK: | |
475 | case NF4CHR: | |
476 | READ_BUF(8); | |
477 | READ32(create->cr_specdata1); | |
478 | READ32(create->cr_specdata2); | |
479 | break; | |
480 | case NF4SOCK: | |
481 | case NF4FIFO: | |
482 | case NF4DIR: | |
483 | default: | |
484 | break; | |
485 | } | |
486 | ||
487 | READ_BUF(4); | |
488 | READ32(create->cr_namelen); | |
489 | READ_BUF(create->cr_namelen); | |
490 | SAVEMEM(create->cr_name, create->cr_namelen); | |
491 | if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval))) | |
492 | return status; | |
493 | ||
494 | if ((status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, &create->cr_acl))) | |
495 | goto out; | |
496 | ||
497 | DECODE_TAIL; | |
498 | } | |
499 | ||
b37ad28b | 500 | static inline __be32 |
1da177e4 LT |
501 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
502 | { | |
503 | DECODE_HEAD; | |
504 | ||
505 | READ_BUF(sizeof(stateid_t)); | |
506 | READ32(dr->dr_stateid.si_generation); | |
507 | COPYMEM(&dr->dr_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
508 | ||
509 | DECODE_TAIL; | |
510 | } | |
511 | ||
b37ad28b | 512 | static inline __be32 |
1da177e4 LT |
513 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
514 | { | |
515 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
516 | } | |
517 | ||
b37ad28b | 518 | static __be32 |
1da177e4 LT |
519 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
520 | { | |
521 | DECODE_HEAD; | |
522 | ||
523 | READ_BUF(4); | |
524 | READ32(link->li_namelen); | |
525 | READ_BUF(link->li_namelen); | |
526 | SAVEMEM(link->li_name, link->li_namelen); | |
527 | if ((status = check_filename(link->li_name, link->li_namelen, nfserr_inval))) | |
528 | return status; | |
529 | ||
530 | DECODE_TAIL; | |
531 | } | |
532 | ||
b37ad28b | 533 | static __be32 |
1da177e4 LT |
534 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
535 | { | |
536 | DECODE_HEAD; | |
537 | ||
3a65588a | 538 | lock->lk_replay_owner = NULL; |
1da177e4 LT |
539 | /* |
540 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
541 | */ | |
542 | READ_BUF(28); | |
543 | READ32(lock->lk_type); | |
544 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) | |
545 | goto xdr_error; | |
546 | READ32(lock->lk_reclaim); | |
547 | READ64(lock->lk_offset); | |
548 | READ64(lock->lk_length); | |
549 | READ32(lock->lk_is_new); | |
550 | ||
551 | if (lock->lk_is_new) { | |
552 | READ_BUF(36); | |
553 | READ32(lock->lk_new_open_seqid); | |
554 | READ32(lock->lk_new_open_stateid.si_generation); | |
555 | ||
556 | COPYMEM(&lock->lk_new_open_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
557 | READ32(lock->lk_new_lock_seqid); | |
558 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); | |
559 | READ32(lock->lk_new_owner.len); | |
560 | READ_BUF(lock->lk_new_owner.len); | |
561 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
562 | } else { | |
563 | READ_BUF(20); | |
564 | READ32(lock->lk_old_lock_stateid.si_generation); | |
565 | COPYMEM(&lock->lk_old_lock_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
566 | READ32(lock->lk_old_lock_seqid); | |
567 | } | |
568 | ||
569 | DECODE_TAIL; | |
570 | } | |
571 | ||
b37ad28b | 572 | static __be32 |
1da177e4 LT |
573 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
574 | { | |
575 | DECODE_HEAD; | |
576 | ||
577 | READ_BUF(32); | |
578 | READ32(lockt->lt_type); | |
579 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) | |
580 | goto xdr_error; | |
581 | READ64(lockt->lt_offset); | |
582 | READ64(lockt->lt_length); | |
583 | COPYMEM(&lockt->lt_clientid, 8); | |
584 | READ32(lockt->lt_owner.len); | |
585 | READ_BUF(lockt->lt_owner.len); | |
586 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
587 | ||
588 | DECODE_TAIL; | |
589 | } | |
590 | ||
b37ad28b | 591 | static __be32 |
1da177e4 LT |
592 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
593 | { | |
594 | DECODE_HEAD; | |
595 | ||
596 | locku->lu_stateowner = NULL; | |
597 | READ_BUF(24 + sizeof(stateid_t)); | |
598 | READ32(locku->lu_type); | |
599 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) | |
600 | goto xdr_error; | |
601 | READ32(locku->lu_seqid); | |
602 | READ32(locku->lu_stateid.si_generation); | |
603 | COPYMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
604 | READ64(locku->lu_offset); | |
605 | READ64(locku->lu_length); | |
606 | ||
607 | DECODE_TAIL; | |
608 | } | |
609 | ||
b37ad28b | 610 | static __be32 |
1da177e4 LT |
611 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
612 | { | |
613 | DECODE_HEAD; | |
614 | ||
615 | READ_BUF(4); | |
616 | READ32(lookup->lo_len); | |
617 | READ_BUF(lookup->lo_len); | |
618 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
619 | if ((status = check_filename(lookup->lo_name, lookup->lo_len, nfserr_noent))) | |
620 | return status; | |
621 | ||
622 | DECODE_TAIL; | |
623 | } | |
624 | ||
b37ad28b | 625 | static __be32 |
1da177e4 LT |
626 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
627 | { | |
628 | DECODE_HEAD; | |
629 | ||
630 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
631 | open->op_iattr.ia_valid = 0; | |
632 | open->op_stateowner = NULL; | |
633 | ||
634 | /* seqid, share_access, share_deny, clientid, ownerlen */ | |
635 | READ_BUF(16 + sizeof(clientid_t)); | |
636 | READ32(open->op_seqid); | |
637 | READ32(open->op_share_access); | |
638 | READ32(open->op_share_deny); | |
639 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); | |
640 | READ32(open->op_owner.len); | |
641 | ||
642 | /* owner, open_flag */ | |
643 | READ_BUF(open->op_owner.len + 4); | |
644 | SAVEMEM(open->op_owner.data, open->op_owner.len); | |
645 | READ32(open->op_create); | |
646 | switch (open->op_create) { | |
647 | case NFS4_OPEN_NOCREATE: | |
648 | break; | |
649 | case NFS4_OPEN_CREATE: | |
650 | READ_BUF(4); | |
651 | READ32(open->op_createmode); | |
652 | switch (open->op_createmode) { | |
653 | case NFS4_CREATE_UNCHECKED: | |
654 | case NFS4_CREATE_GUARDED: | |
655 | if ((status = nfsd4_decode_fattr(argp, open->op_bmval, &open->op_iattr, &open->op_acl))) | |
656 | goto out; | |
657 | break; | |
658 | case NFS4_CREATE_EXCLUSIVE: | |
659 | READ_BUF(8); | |
660 | COPYMEM(open->op_verf.data, 8); | |
661 | break; | |
662 | default: | |
663 | goto xdr_error; | |
664 | } | |
665 | break; | |
666 | default: | |
667 | goto xdr_error; | |
668 | } | |
669 | ||
670 | /* open_claim */ | |
671 | READ_BUF(4); | |
672 | READ32(open->op_claim_type); | |
673 | switch (open->op_claim_type) { | |
674 | case NFS4_OPEN_CLAIM_NULL: | |
675 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
676 | READ_BUF(4); | |
677 | READ32(open->op_fname.len); | |
678 | READ_BUF(open->op_fname.len); | |
679 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
680 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) | |
681 | return status; | |
682 | break; | |
683 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
684 | READ_BUF(4); | |
685 | READ32(open->op_delegate_type); | |
686 | break; | |
687 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
688 | READ_BUF(sizeof(stateid_t) + 4); | |
689 | COPYMEM(&open->op_delegate_stateid, sizeof(stateid_t)); | |
690 | READ32(open->op_fname.len); | |
691 | READ_BUF(open->op_fname.len); | |
692 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
693 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) | |
694 | return status; | |
695 | break; | |
696 | default: | |
697 | goto xdr_error; | |
698 | } | |
699 | ||
700 | DECODE_TAIL; | |
701 | } | |
702 | ||
b37ad28b | 703 | static __be32 |
1da177e4 LT |
704 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
705 | { | |
706 | DECODE_HEAD; | |
707 | ||
708 | open_conf->oc_stateowner = NULL; | |
709 | READ_BUF(4 + sizeof(stateid_t)); | |
710 | READ32(open_conf->oc_req_stateid.si_generation); | |
711 | COPYMEM(&open_conf->oc_req_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
712 | READ32(open_conf->oc_seqid); | |
713 | ||
714 | DECODE_TAIL; | |
715 | } | |
716 | ||
b37ad28b | 717 | static __be32 |
1da177e4 LT |
718 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
719 | { | |
720 | DECODE_HEAD; | |
721 | ||
722 | open_down->od_stateowner = NULL; | |
723 | READ_BUF(12 + sizeof(stateid_t)); | |
724 | READ32(open_down->od_stateid.si_generation); | |
725 | COPYMEM(&open_down->od_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
726 | READ32(open_down->od_seqid); | |
727 | READ32(open_down->od_share_access); | |
728 | READ32(open_down->od_share_deny); | |
729 | ||
730 | DECODE_TAIL; | |
731 | } | |
732 | ||
b37ad28b | 733 | static __be32 |
1da177e4 LT |
734 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
735 | { | |
736 | DECODE_HEAD; | |
737 | ||
738 | READ_BUF(4); | |
739 | READ32(putfh->pf_fhlen); | |
740 | if (putfh->pf_fhlen > NFS4_FHSIZE) | |
741 | goto xdr_error; | |
742 | READ_BUF(putfh->pf_fhlen); | |
743 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
744 | ||
745 | DECODE_TAIL; | |
746 | } | |
747 | ||
b37ad28b | 748 | static __be32 |
1da177e4 LT |
749 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
750 | { | |
751 | DECODE_HEAD; | |
752 | ||
753 | READ_BUF(sizeof(stateid_t) + 12); | |
754 | READ32(read->rd_stateid.si_generation); | |
755 | COPYMEM(&read->rd_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
756 | READ64(read->rd_offset); | |
757 | READ32(read->rd_length); | |
758 | ||
759 | DECODE_TAIL; | |
760 | } | |
761 | ||
b37ad28b | 762 | static __be32 |
1da177e4 LT |
763 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
764 | { | |
765 | DECODE_HEAD; | |
766 | ||
767 | READ_BUF(24); | |
768 | READ64(readdir->rd_cookie); | |
769 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); | |
770 | READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ | |
771 | READ32(readdir->rd_maxcount); | |
772 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) | |
773 | goto out; | |
774 | ||
775 | DECODE_TAIL; | |
776 | } | |
777 | ||
b37ad28b | 778 | static __be32 |
1da177e4 LT |
779 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
780 | { | |
781 | DECODE_HEAD; | |
782 | ||
783 | READ_BUF(4); | |
784 | READ32(remove->rm_namelen); | |
785 | READ_BUF(remove->rm_namelen); | |
786 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
787 | if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent))) | |
788 | return status; | |
789 | ||
790 | DECODE_TAIL; | |
791 | } | |
792 | ||
b37ad28b | 793 | static __be32 |
1da177e4 LT |
794 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
795 | { | |
796 | DECODE_HEAD; | |
797 | ||
798 | READ_BUF(4); | |
799 | READ32(rename->rn_snamelen); | |
800 | READ_BUF(rename->rn_snamelen + 4); | |
801 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); | |
802 | READ32(rename->rn_tnamelen); | |
803 | READ_BUF(rename->rn_tnamelen); | |
804 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
805 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent))) | |
806 | return status; | |
807 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval))) | |
808 | return status; | |
809 | ||
810 | DECODE_TAIL; | |
811 | } | |
812 | ||
b37ad28b | 813 | static __be32 |
1da177e4 LT |
814 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
815 | { | |
816 | DECODE_HEAD; | |
817 | ||
818 | READ_BUF(sizeof(clientid_t)); | |
819 | COPYMEM(clientid, sizeof(clientid_t)); | |
820 | ||
821 | DECODE_TAIL; | |
822 | } | |
823 | ||
b37ad28b | 824 | static __be32 |
1da177e4 LT |
825 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
826 | { | |
827 | DECODE_HEAD; | |
828 | ||
829 | READ_BUF(sizeof(stateid_t)); | |
830 | READ32(setattr->sa_stateid.si_generation); | |
831 | COPYMEM(&setattr->sa_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
832 | if ((status = nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, &setattr->sa_acl))) | |
833 | goto out; | |
834 | ||
835 | DECODE_TAIL; | |
836 | } | |
837 | ||
b37ad28b | 838 | static __be32 |
1da177e4 LT |
839 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
840 | { | |
841 | DECODE_HEAD; | |
842 | ||
843 | READ_BUF(12); | |
844 | COPYMEM(setclientid->se_verf.data, 8); | |
845 | READ32(setclientid->se_namelen); | |
846 | ||
847 | READ_BUF(setclientid->se_namelen + 8); | |
848 | SAVEMEM(setclientid->se_name, setclientid->se_namelen); | |
849 | READ32(setclientid->se_callback_prog); | |
850 | READ32(setclientid->se_callback_netid_len); | |
851 | ||
852 | READ_BUF(setclientid->se_callback_netid_len + 4); | |
853 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); | |
854 | READ32(setclientid->se_callback_addr_len); | |
855 | ||
856 | READ_BUF(setclientid->se_callback_addr_len + 4); | |
857 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); | |
858 | READ32(setclientid->se_callback_ident); | |
859 | ||
860 | DECODE_TAIL; | |
861 | } | |
862 | ||
b37ad28b | 863 | static __be32 |
1da177e4 LT |
864 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
865 | { | |
866 | DECODE_HEAD; | |
867 | ||
868 | READ_BUF(8 + sizeof(nfs4_verifier)); | |
869 | COPYMEM(&scd_c->sc_clientid, 8); | |
870 | COPYMEM(&scd_c->sc_confirm, sizeof(nfs4_verifier)); | |
871 | ||
872 | DECODE_TAIL; | |
873 | } | |
874 | ||
875 | /* Also used for NVERIFY */ | |
b37ad28b | 876 | static __be32 |
1da177e4 LT |
877 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
878 | { | |
879 | #if 0 | |
880 | struct nfsd4_compoundargs save = { | |
881 | .p = argp->p, | |
882 | .end = argp->end, | |
883 | .rqstp = argp->rqstp, | |
884 | }; | |
885 | u32 ve_bmval[2]; | |
886 | struct iattr ve_iattr; /* request */ | |
887 | struct nfs4_acl *ve_acl; /* request */ | |
888 | #endif | |
889 | DECODE_HEAD; | |
890 | ||
891 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
892 | goto out; | |
893 | ||
894 | /* For convenience's sake, we compare raw xdr'd attributes in | |
895 | * nfsd4_proc_verify; however we still decode here just to return | |
896 | * correct error in case of bad xdr. */ | |
897 | #if 0 | |
898 | status = nfsd4_decode_fattr(ve_bmval, &ve_iattr, &ve_acl); | |
899 | if (status == nfserr_inval) { | |
900 | status = nfserrno(status); | |
901 | goto out; | |
902 | } | |
903 | #endif | |
904 | READ_BUF(4); | |
905 | READ32(verify->ve_attrlen); | |
906 | READ_BUF(verify->ve_attrlen); | |
907 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
908 | ||
909 | DECODE_TAIL; | |
910 | } | |
911 | ||
b37ad28b | 912 | static __be32 |
1da177e4 LT |
913 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
914 | { | |
915 | int avail; | |
916 | int v; | |
917 | int len; | |
918 | DECODE_HEAD; | |
919 | ||
920 | READ_BUF(sizeof(stateid_opaque_t) + 20); | |
921 | READ32(write->wr_stateid.si_generation); | |
922 | COPYMEM(&write->wr_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
923 | READ64(write->wr_offset); | |
924 | READ32(write->wr_stable_how); | |
925 | if (write->wr_stable_how > 2) | |
926 | goto xdr_error; | |
927 | READ32(write->wr_buflen); | |
928 | ||
929 | /* Sorry .. no magic macros for this.. * | |
930 | * READ_BUF(write->wr_buflen); | |
931 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
932 | */ | |
933 | avail = (char*)argp->end - (char*)argp->p; | |
934 | if (avail + argp->pagelen < write->wr_buflen) { | |
935 | printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); | |
936 | goto xdr_error; | |
937 | } | |
3cc03b16 N |
938 | argp->rqstp->rq_vec[0].iov_base = p; |
939 | argp->rqstp->rq_vec[0].iov_len = avail; | |
1da177e4 LT |
940 | v = 0; |
941 | len = write->wr_buflen; | |
3cc03b16 N |
942 | while (len > argp->rqstp->rq_vec[v].iov_len) { |
943 | len -= argp->rqstp->rq_vec[v].iov_len; | |
1da177e4 | 944 | v++; |
3cc03b16 | 945 | argp->rqstp->rq_vec[v].iov_base = page_address(argp->pagelist[0]); |
1da177e4 LT |
946 | argp->pagelist++; |
947 | if (argp->pagelen >= PAGE_SIZE) { | |
3cc03b16 | 948 | argp->rqstp->rq_vec[v].iov_len = PAGE_SIZE; |
1da177e4 LT |
949 | argp->pagelen -= PAGE_SIZE; |
950 | } else { | |
3cc03b16 | 951 | argp->rqstp->rq_vec[v].iov_len = argp->pagelen; |
1da177e4 LT |
952 | argp->pagelen -= len; |
953 | } | |
954 | } | |
2ebbc012 AV |
955 | argp->end = (__be32*) (argp->rqstp->rq_vec[v].iov_base + argp->rqstp->rq_vec[v].iov_len); |
956 | argp->p = (__be32*) (argp->rqstp->rq_vec[v].iov_base + (XDR_QUADLEN(len) << 2)); | |
3cc03b16 | 957 | argp->rqstp->rq_vec[v].iov_len = len; |
1da177e4 LT |
958 | write->wr_vlen = v+1; |
959 | ||
960 | DECODE_TAIL; | |
961 | } | |
962 | ||
b37ad28b | 963 | static __be32 |
1da177e4 LT |
964 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
965 | { | |
966 | DECODE_HEAD; | |
967 | ||
968 | READ_BUF(12); | |
969 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
970 | READ32(rlockowner->rl_owner.len); | |
971 | READ_BUF(rlockowner->rl_owner.len); | |
972 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
973 | ||
974 | DECODE_TAIL; | |
975 | } | |
976 | ||
b37ad28b | 977 | static __be32 |
1da177e4 LT |
978 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
979 | { | |
980 | DECODE_HEAD; | |
981 | struct nfsd4_op *op; | |
982 | int i; | |
983 | ||
984 | /* | |
985 | * XXX: According to spec, we should check the tag | |
986 | * for UTF-8 compliance. I'm postponing this for | |
987 | * now because it seems that some clients do use | |
988 | * binary tags. | |
989 | */ | |
990 | READ_BUF(4); | |
991 | READ32(argp->taglen); | |
992 | READ_BUF(argp->taglen + 8); | |
993 | SAVEMEM(argp->tag, argp->taglen); | |
994 | READ32(argp->minorversion); | |
995 | READ32(argp->opcnt); | |
996 | ||
997 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
998 | goto xdr_error; | |
999 | if (argp->opcnt > 100) | |
1000 | goto xdr_error; | |
1001 | ||
e8c96f8c | 1002 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
1da177e4 LT |
1003 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1004 | if (!argp->ops) { | |
1005 | argp->ops = argp->iops; | |
1006 | printk(KERN_INFO "nfsd: couldn't allocate room for COMPOUND\n"); | |
1007 | goto xdr_error; | |
1008 | } | |
1009 | } | |
1010 | ||
1011 | for (i = 0; i < argp->opcnt; i++) { | |
1012 | op = &argp->ops[i]; | |
1013 | op->replay = NULL; | |
1014 | ||
1015 | /* | |
1016 | * We can't use READ_BUF() here because we need to handle | |
1017 | * a missing opcode as an OP_WRITE + 1. So we need to check | |
1018 | * to see if we're truly at the end of our buffer or if there | |
1019 | * is another page we need to flip to. | |
1020 | */ | |
1021 | ||
1022 | if (argp->p == argp->end) { | |
1023 | if (argp->pagelen < 4) { | |
1024 | /* There isn't an opcode still on the wire */ | |
1025 | op->opnum = OP_WRITE + 1; | |
1026 | op->status = nfserr_bad_xdr; | |
1027 | argp->opcnt = i+1; | |
1028 | break; | |
1029 | } | |
1030 | ||
1031 | /* | |
1032 | * False alarm. We just hit a page boundary, but there | |
1033 | * is still data available. Move pointer across page | |
1034 | * boundary. *snip from READ_BUF* | |
1035 | */ | |
1036 | argp->p = page_address(argp->pagelist[0]); | |
1037 | argp->pagelist++; | |
1038 | if (argp->pagelen < PAGE_SIZE) { | |
1039 | argp->end = p + (argp->pagelen>>2); | |
1040 | argp->pagelen = 0; | |
1041 | } else { | |
1042 | argp->end = p + (PAGE_SIZE>>2); | |
1043 | argp->pagelen -= PAGE_SIZE; | |
1044 | } | |
1045 | } | |
1046 | op->opnum = ntohl(*argp->p++); | |
1047 | ||
1048 | switch (op->opnum) { | |
1049 | case 2: /* Reserved operation */ | |
1050 | op->opnum = OP_ILLEGAL; | |
1051 | if (argp->minorversion == 0) | |
1052 | op->status = nfserr_op_illegal; | |
1053 | else | |
1054 | op->status = nfserr_minor_vers_mismatch; | |
1055 | break; | |
1056 | case OP_ACCESS: | |
1057 | op->status = nfsd4_decode_access(argp, &op->u.access); | |
1058 | break; | |
1059 | case OP_CLOSE: | |
1060 | op->status = nfsd4_decode_close(argp, &op->u.close); | |
1061 | break; | |
1062 | case OP_COMMIT: | |
1063 | op->status = nfsd4_decode_commit(argp, &op->u.commit); | |
1064 | break; | |
1065 | case OP_CREATE: | |
1066 | op->status = nfsd4_decode_create(argp, &op->u.create); | |
1067 | break; | |
1068 | case OP_DELEGRETURN: | |
1069 | op->status = nfsd4_decode_delegreturn(argp, &op->u.delegreturn); | |
1070 | break; | |
1071 | case OP_GETATTR: | |
1072 | op->status = nfsd4_decode_getattr(argp, &op->u.getattr); | |
1073 | break; | |
1074 | case OP_GETFH: | |
1075 | op->status = nfs_ok; | |
1076 | break; | |
1077 | case OP_LINK: | |
1078 | op->status = nfsd4_decode_link(argp, &op->u.link); | |
1079 | break; | |
1080 | case OP_LOCK: | |
1081 | op->status = nfsd4_decode_lock(argp, &op->u.lock); | |
1082 | break; | |
1083 | case OP_LOCKT: | |
1084 | op->status = nfsd4_decode_lockt(argp, &op->u.lockt); | |
1085 | break; | |
1086 | case OP_LOCKU: | |
1087 | op->status = nfsd4_decode_locku(argp, &op->u.locku); | |
1088 | break; | |
1089 | case OP_LOOKUP: | |
1090 | op->status = nfsd4_decode_lookup(argp, &op->u.lookup); | |
1091 | break; | |
1092 | case OP_LOOKUPP: | |
1093 | op->status = nfs_ok; | |
1094 | break; | |
1095 | case OP_NVERIFY: | |
1096 | op->status = nfsd4_decode_verify(argp, &op->u.nverify); | |
1097 | break; | |
1098 | case OP_OPEN: | |
1099 | op->status = nfsd4_decode_open(argp, &op->u.open); | |
1100 | break; | |
1101 | case OP_OPEN_CONFIRM: | |
1102 | op->status = nfsd4_decode_open_confirm(argp, &op->u.open_confirm); | |
1103 | break; | |
1104 | case OP_OPEN_DOWNGRADE: | |
1105 | op->status = nfsd4_decode_open_downgrade(argp, &op->u.open_downgrade); | |
1106 | break; | |
1107 | case OP_PUTFH: | |
1108 | op->status = nfsd4_decode_putfh(argp, &op->u.putfh); | |
1109 | break; | |
1110 | case OP_PUTROOTFH: | |
1111 | op->status = nfs_ok; | |
1112 | break; | |
1113 | case OP_READ: | |
1114 | op->status = nfsd4_decode_read(argp, &op->u.read); | |
1115 | break; | |
1116 | case OP_READDIR: | |
1117 | op->status = nfsd4_decode_readdir(argp, &op->u.readdir); | |
1118 | break; | |
1119 | case OP_READLINK: | |
1120 | op->status = nfs_ok; | |
1121 | break; | |
1122 | case OP_REMOVE: | |
1123 | op->status = nfsd4_decode_remove(argp, &op->u.remove); | |
1124 | break; | |
1125 | case OP_RENAME: | |
1126 | op->status = nfsd4_decode_rename(argp, &op->u.rename); | |
1127 | break; | |
1128 | case OP_RESTOREFH: | |
1129 | op->status = nfs_ok; | |
1130 | break; | |
1131 | case OP_RENEW: | |
1132 | op->status = nfsd4_decode_renew(argp, &op->u.renew); | |
1133 | break; | |
1134 | case OP_SAVEFH: | |
1135 | op->status = nfs_ok; | |
1136 | break; | |
1137 | case OP_SETATTR: | |
1138 | op->status = nfsd4_decode_setattr(argp, &op->u.setattr); | |
1139 | break; | |
1140 | case OP_SETCLIENTID: | |
1141 | op->status = nfsd4_decode_setclientid(argp, &op->u.setclientid); | |
1142 | break; | |
1143 | case OP_SETCLIENTID_CONFIRM: | |
1144 | op->status = nfsd4_decode_setclientid_confirm(argp, &op->u.setclientid_confirm); | |
1145 | break; | |
1146 | case OP_VERIFY: | |
1147 | op->status = nfsd4_decode_verify(argp, &op->u.verify); | |
1148 | break; | |
1149 | case OP_WRITE: | |
1150 | op->status = nfsd4_decode_write(argp, &op->u.write); | |
1151 | break; | |
1152 | case OP_RELEASE_LOCKOWNER: | |
1153 | op->status = nfsd4_decode_release_lockowner(argp, &op->u.release_lockowner); | |
1154 | break; | |
1155 | default: | |
1156 | op->opnum = OP_ILLEGAL; | |
1157 | op->status = nfserr_op_illegal; | |
1158 | break; | |
1159 | } | |
1160 | ||
1161 | if (op->status) { | |
1162 | argp->opcnt = i+1; | |
1163 | break; | |
1164 | } | |
1165 | } | |
1166 | ||
1167 | DECODE_TAIL; | |
1168 | } | |
1169 | /* | |
1170 | * END OF "GENERIC" DECODE ROUTINES. | |
1171 | */ | |
1172 | ||
1173 | /* | |
1174 | * START OF "GENERIC" ENCODE ROUTINES. | |
1175 | * These may look a little ugly since they are imported from a "generic" | |
1176 | * set of XDR encode/decode routines which are intended to be shared by | |
1177 | * all of our NFSv4 implementations (OpenBSD, MacOS X...). | |
1178 | * | |
1179 | * If the pain of reading these is too great, it should be a straightforward | |
1180 | * task to translate them into Linux-specific versions which are more | |
1181 | * consistent with the style used in NFSv2/v3... | |
1182 | */ | |
2ebbc012 | 1183 | #define ENCODE_HEAD __be32 *p |
1da177e4 LT |
1184 | |
1185 | #define WRITE32(n) *p++ = htonl(n) | |
1186 | #define WRITE64(n) do { \ | |
1187 | *p++ = htonl((u32)((n) >> 32)); \ | |
1188 | *p++ = htonl((u32)(n)); \ | |
1189 | } while (0) | |
1190 | #define WRITEMEM(ptr,nbytes) do { \ | |
1191 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ | |
1192 | memcpy(p, ptr, nbytes); \ | |
1193 | p += XDR_QUADLEN(nbytes); \ | |
1194 | } while (0) | |
1195 | #define WRITECINFO(c) do { \ | |
1196 | *p++ = htonl(c.atomic); \ | |
1197 | *p++ = htonl(c.before_ctime_sec); \ | |
1198 | *p++ = htonl(c.before_ctime_nsec); \ | |
1199 | *p++ = htonl(c.after_ctime_sec); \ | |
1200 | *p++ = htonl(c.after_ctime_nsec); \ | |
1201 | } while (0) | |
1202 | ||
1203 | #define RESERVE_SPACE(nbytes) do { \ | |
1204 | p = resp->p; \ | |
1205 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ | |
1206 | } while (0) | |
1207 | #define ADJUST_ARGS() resp->p = p | |
1208 | ||
1209 | /* | |
1210 | * Header routine to setup seqid operation replay cache | |
1211 | */ | |
1212 | #define ENCODE_SEQID_OP_HEAD \ | |
2ebbc012 AV |
1213 | __be32 *p; \ |
1214 | __be32 *save; \ | |
1da177e4 LT |
1215 | \ |
1216 | save = resp->p; | |
1217 | ||
1218 | /* | |
7fb64cee N |
1219 | * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This |
1220 | * is where sequence id's are incremented, and the replay cache is filled. | |
1221 | * Note that we increment sequence id's here, at the last moment, so we're sure | |
1222 | * we know whether the error to be returned is a sequence id mutating error. | |
1da177e4 LT |
1223 | */ |
1224 | ||
1225 | #define ENCODE_SEQID_OP_TAIL(stateowner) do { \ | |
1226 | if (seqid_mutating_err(nfserr) && stateowner) { \ | |
bd9aac52 | 1227 | stateowner->so_seqid++; \ |
1da177e4 LT |
1228 | stateowner->so_replay.rp_status = nfserr; \ |
1229 | stateowner->so_replay.rp_buflen = \ | |
1230 | (((char *)(resp)->p - (char *)save)); \ | |
1231 | memcpy(stateowner->so_replay.rp_buf, save, \ | |
1232 | stateowner->so_replay.rp_buflen); \ | |
1233 | } } while (0); | |
1234 | ||
81c3f413 BF |
1235 | /* Encode as an array of strings the string given with components |
1236 | * seperated @sep. | |
1237 | */ | |
b37ad28b | 1238 | static __be32 nfsd4_encode_components(char sep, char *components, |
2ebbc012 | 1239 | __be32 **pp, int *buflen) |
81c3f413 | 1240 | { |
2ebbc012 AV |
1241 | __be32 *p = *pp; |
1242 | __be32 *countp = p; | |
81c3f413 BF |
1243 | int strlen, count=0; |
1244 | char *str, *end; | |
1245 | ||
1246 | dprintk("nfsd4_encode_components(%s)\n", components); | |
1247 | if ((*buflen -= 4) < 0) | |
1248 | return nfserr_resource; | |
1249 | WRITE32(0); /* We will fill this in with @count later */ | |
1250 | end = str = components; | |
1251 | while (*end) { | |
1252 | for (; *end && (*end != sep); end++) | |
1253 | ; /* Point to end of component */ | |
1254 | strlen = end - str; | |
1255 | if (strlen) { | |
1256 | if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0) | |
1257 | return nfserr_resource; | |
1258 | WRITE32(strlen); | |
1259 | WRITEMEM(str, strlen); | |
1260 | count++; | |
1261 | } | |
1262 | else | |
1263 | end++; | |
1264 | str = end; | |
1265 | } | |
1266 | *pp = p; | |
1267 | p = countp; | |
1268 | WRITE32(count); | |
1269 | return 0; | |
1270 | } | |
1271 | ||
1272 | /* | |
1273 | * encode a location element of a fs_locations structure | |
1274 | */ | |
b37ad28b | 1275 | static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location, |
2ebbc012 | 1276 | __be32 **pp, int *buflen) |
81c3f413 | 1277 | { |
b37ad28b | 1278 | __be32 status; |
2ebbc012 | 1279 | __be32 *p = *pp; |
81c3f413 BF |
1280 | |
1281 | status = nfsd4_encode_components(':', location->hosts, &p, buflen); | |
1282 | if (status) | |
1283 | return status; | |
1284 | status = nfsd4_encode_components('/', location->path, &p, buflen); | |
1285 | if (status) | |
1286 | return status; | |
1287 | *pp = p; | |
1288 | return 0; | |
1289 | } | |
1290 | ||
1291 | /* | |
1292 | * Return the path to an export point in the pseudo filesystem namespace | |
1293 | * Returned string is safe to use as long as the caller holds a reference | |
1294 | * to @exp. | |
1295 | */ | |
b37ad28b | 1296 | static char *nfsd4_path(struct svc_rqst *rqstp, struct svc_export *exp, __be32 *stat) |
81c3f413 BF |
1297 | { |
1298 | struct svc_fh tmp_fh; | |
1299 | char *path, *rootpath; | |
81c3f413 BF |
1300 | |
1301 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
cc45f017 AV |
1302 | *stat = exp_pseudoroot(rqstp->rq_client, &tmp_fh, &rqstp->rq_chandle); |
1303 | if (*stat) | |
1304 | return NULL; | |
81c3f413 BF |
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); | |
cc45f017 AV |
1312 | *stat = nfserr_notsupp; |
1313 | return NULL; | |
81c3f413 BF |
1314 | } |
1315 | ||
1316 | return path + strlen(rootpath); | |
1317 | } | |
1318 | ||
1319 | /* | |
1320 | * encode a fs_locations structure | |
1321 | */ | |
b37ad28b | 1322 | static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp, |
81c3f413 | 1323 | struct svc_export *exp, |
2ebbc012 | 1324 | __be32 **pp, int *buflen) |
81c3f413 | 1325 | { |
b37ad28b | 1326 | __be32 status; |
cc45f017 | 1327 | int i; |
2ebbc012 | 1328 | __be32 *p = *pp; |
81c3f413 | 1329 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
cc45f017 | 1330 | char *root = nfsd4_path(rqstp, exp, &status); |
81c3f413 | 1331 | |
cc45f017 AV |
1332 | if (status) |
1333 | return status; | |
81c3f413 BF |
1334 | status = nfsd4_encode_components('/', root, &p, buflen); |
1335 | if (status) | |
1336 | return status; | |
1337 | if ((*buflen -= 4) < 0) | |
1338 | return nfserr_resource; | |
1339 | WRITE32(fslocs->locations_count); | |
1340 | for (i=0; i<fslocs->locations_count; i++) { | |
1341 | status = nfsd4_encode_fs_location4(&fslocs->locations[i], | |
1342 | &p, buflen); | |
1343 | if (status) | |
1344 | return status; | |
1345 | } | |
1346 | *pp = p; | |
1347 | return 0; | |
1348 | } | |
1da177e4 LT |
1349 | |
1350 | static u32 nfs4_ftypes[16] = { | |
1351 | NF4BAD, NF4FIFO, NF4CHR, NF4BAD, | |
1352 | NF4DIR, NF4BAD, NF4BLK, NF4BAD, | |
1353 | NF4REG, NF4BAD, NF4LNK, NF4BAD, | |
1354 | NF4SOCK, NF4BAD, NF4LNK, NF4BAD, | |
1355 | }; | |
1356 | ||
b37ad28b | 1357 | static __be32 |
1da177e4 | 1358 | nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
2ebbc012 | 1359 | __be32 **p, int *buflen) |
1da177e4 LT |
1360 | { |
1361 | int status; | |
1362 | ||
1363 | if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) | |
1364 | return nfserr_resource; | |
1365 | if (whotype != NFS4_ACL_WHO_NAMED) | |
1366 | status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); | |
1367 | else if (group) | |
1368 | status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1369 | else | |
1370 | status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1371 | if (status < 0) | |
1372 | return nfserrno(status); | |
1373 | *p = xdr_encode_opaque(*p, NULL, status); | |
1374 | *buflen -= (XDR_QUADLEN(status) << 2) + 4; | |
1375 | BUG_ON(*buflen < 0); | |
1376 | return 0; | |
1377 | } | |
1378 | ||
b37ad28b | 1379 | static inline __be32 |
2ebbc012 | 1380 | nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, __be32 **p, int *buflen) |
1da177e4 LT |
1381 | { |
1382 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen); | |
1383 | } | |
1384 | ||
b37ad28b | 1385 | static inline __be32 |
2ebbc012 | 1386 | nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, __be32 **p, int *buflen) |
1da177e4 LT |
1387 | { |
1388 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen); | |
1389 | } | |
1390 | ||
b37ad28b | 1391 | static inline __be32 |
1da177e4 | 1392 | nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
2ebbc012 | 1393 | __be32 **p, int *buflen) |
1da177e4 LT |
1394 | { |
1395 | return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen); | |
1396 | } | |
1397 | ||
42ca0993 BF |
1398 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
1399 | FATTR4_WORD0_RDATTR_ERROR) | |
1400 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
1401 | ||
b37ad28b | 1402 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
42ca0993 BF |
1403 | { |
1404 | /* As per referral draft: */ | |
1405 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
1406 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
1407 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
1408 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
1409 | *rdattr_err = NFSERR_MOVED; | |
1410 | else | |
1411 | return nfserr_moved; | |
1412 | } | |
1413 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
1414 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
1415 | return 0; | |
1416 | } | |
1da177e4 LT |
1417 | |
1418 | /* | |
1419 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
1420 | * ourselves. | |
1421 | * | |
1422 | * @countp is the buffer size in _words_; upon successful return this becomes | |
1423 | * replaced with the number of words written. | |
1424 | */ | |
b37ad28b | 1425 | __be32 |
1da177e4 | 1426 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, |
2ebbc012 | 1427 | struct dentry *dentry, __be32 *buffer, int *countp, u32 *bmval, |
1da177e4 LT |
1428 | struct svc_rqst *rqstp) |
1429 | { | |
1430 | u32 bmval0 = bmval[0]; | |
1431 | u32 bmval1 = bmval[1]; | |
1432 | struct kstat stat; | |
1433 | struct svc_fh tempfh; | |
1434 | struct kstatfs statfs; | |
1435 | int buflen = *countp << 2; | |
2ebbc012 | 1436 | __be32 *attrlenp; |
1da177e4 LT |
1437 | u32 dummy; |
1438 | u64 dummy64; | |
42ca0993 | 1439 | u32 rdattr_err = 0; |
2ebbc012 | 1440 | __be32 *p = buffer; |
b37ad28b | 1441 | __be32 status; |
b8dd7b9a | 1442 | int err; |
1da177e4 LT |
1443 | int aclsupport = 0; |
1444 | struct nfs4_acl *acl = NULL; | |
1445 | ||
1446 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
1447 | BUG_ON(bmval0 & ~NFSD_SUPPORTED_ATTRS_WORD0); | |
1448 | BUG_ON(bmval1 & ~NFSD_SUPPORTED_ATTRS_WORD1); | |
1449 | ||
42ca0993 BF |
1450 | if (exp->ex_fslocs.migrated) { |
1451 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); | |
1452 | if (status) | |
1453 | goto out; | |
1454 | } | |
1455 | ||
b8dd7b9a AV |
1456 | err = vfs_getattr(exp->ex_mnt, dentry, &stat); |
1457 | if (err) | |
1da177e4 LT |
1458 | goto out_nfserr; |
1459 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL)) || | |
1460 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | | |
1461 | FATTR4_WORD1_SPACE_TOTAL))) { | |
b8dd7b9a AV |
1462 | err = vfs_statfs(dentry, &statfs); |
1463 | if (err) | |
1da177e4 LT |
1464 | goto out_nfserr; |
1465 | } | |
1466 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
1467 | fh_init(&tempfh, NFS4_FHSIZE); | |
1468 | status = fh_compose(&tempfh, exp, dentry, NULL); | |
1469 | if (status) | |
1470 | goto out; | |
1471 | fhp = &tempfh; | |
1472 | } | |
1473 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
1474 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
b8dd7b9a AV |
1475 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
1476 | aclsupport = (err == 0); | |
1da177e4 | 1477 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 1478 | if (err == -EOPNOTSUPP) |
1da177e4 | 1479 | bmval0 &= ~FATTR4_WORD0_ACL; |
b8dd7b9a | 1480 | else if (err == -EINVAL) { |
1da177e4 LT |
1481 | status = nfserr_attrnotsupp; |
1482 | goto out; | |
b8dd7b9a | 1483 | } else if (err != 0) |
1da177e4 LT |
1484 | goto out_nfserr; |
1485 | } | |
1486 | } | |
81c3f413 BF |
1487 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
1488 | if (exp->ex_fslocs.locations == NULL) { | |
1489 | bmval0 &= ~FATTR4_WORD0_FS_LOCATIONS; | |
1490 | } | |
1491 | } | |
1da177e4 LT |
1492 | if ((buflen -= 16) < 0) |
1493 | goto out_resource; | |
1494 | ||
1495 | WRITE32(2); | |
1496 | WRITE32(bmval0); | |
1497 | WRITE32(bmval1); | |
1498 | attrlenp = p++; /* to be backfilled later */ | |
1499 | ||
1500 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
42ca0993 | 1501 | u32 word0 = NFSD_SUPPORTED_ATTRS_WORD0; |
1da177e4 LT |
1502 | if ((buflen -= 12) < 0) |
1503 | goto out_resource; | |
42ca0993 BF |
1504 | if (!aclsupport) |
1505 | word0 &= ~FATTR4_WORD0_ACL; | |
1506 | if (!exp->ex_fslocs.locations) | |
1507 | word0 &= ~FATTR4_WORD0_FS_LOCATIONS; | |
1da177e4 | 1508 | WRITE32(2); |
42ca0993 | 1509 | WRITE32(word0); |
1da177e4 LT |
1510 | WRITE32(NFSD_SUPPORTED_ATTRS_WORD1); |
1511 | } | |
1512 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
1513 | if ((buflen -= 4) < 0) | |
1514 | goto out_resource; | |
1515 | dummy = nfs4_ftypes[(stat.mode & S_IFMT) >> 12]; | |
1516 | if (dummy == NF4BAD) | |
1517 | goto out_serverfault; | |
1518 | WRITE32(dummy); | |
1519 | } | |
1520 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
1521 | if ((buflen -= 4) < 0) | |
1522 | goto out_resource; | |
49640001 | 1523 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
e34ac862 | 1524 | WRITE32(NFS4_FH_PERSISTENT); |
49640001 | 1525 | else |
e34ac862 | 1526 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
1da177e4 LT |
1527 | } |
1528 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
1529 | /* | |
1530 | * Note: This _must_ be consistent with the scheme for writing | |
1531 | * change_info, so any changes made here must be reflected there | |
1532 | * as well. (See xdr4.h:set_change_info() and the WRITECINFO() | |
1533 | * macro above.) | |
1534 | */ | |
1535 | if ((buflen -= 8) < 0) | |
1536 | goto out_resource; | |
1537 | WRITE32(stat.ctime.tv_sec); | |
1538 | WRITE32(stat.ctime.tv_nsec); | |
1539 | } | |
1540 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
1541 | if ((buflen -= 8) < 0) | |
1542 | goto out_resource; | |
1543 | WRITE64(stat.size); | |
1544 | } | |
1545 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
1546 | if ((buflen -= 4) < 0) | |
1547 | goto out_resource; | |
1548 | WRITE32(1); | |
1549 | } | |
1550 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
1551 | if ((buflen -= 4) < 0) | |
1552 | goto out_resource; | |
1553 | WRITE32(1); | |
1554 | } | |
1555 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
1556 | if ((buflen -= 4) < 0) | |
1557 | goto out_resource; | |
1558 | WRITE32(0); | |
1559 | } | |
1560 | if (bmval0 & FATTR4_WORD0_FSID) { | |
1561 | if ((buflen -= 16) < 0) | |
1562 | goto out_resource; | |
42ca0993 BF |
1563 | if (exp->ex_fslocs.migrated) { |
1564 | WRITE64(NFS4_REFERRAL_FSID_MAJOR); | |
1565 | WRITE64(NFS4_REFERRAL_FSID_MINOR); | |
1566 | } else if (is_fsid(fhp, rqstp->rq_reffh)) { | |
1da177e4 LT |
1567 | WRITE64((u64)exp->ex_fsid); |
1568 | WRITE64((u64)0); | |
1569 | } else { | |
1570 | WRITE32(0); | |
1571 | WRITE32(MAJOR(stat.dev)); | |
1572 | WRITE32(0); | |
1573 | WRITE32(MINOR(stat.dev)); | |
1574 | } | |
1575 | } | |
1576 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
1577 | if ((buflen -= 4) < 0) | |
1578 | goto out_resource; | |
1579 | WRITE32(0); | |
1580 | } | |
1581 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
1582 | if ((buflen -= 4) < 0) | |
1583 | goto out_resource; | |
1584 | WRITE32(NFSD_LEASE_TIME); | |
1585 | } | |
1586 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
1587 | if ((buflen -= 4) < 0) | |
1588 | goto out_resource; | |
42ca0993 | 1589 | WRITE32(rdattr_err); |
1da177e4 LT |
1590 | } |
1591 | if (bmval0 & FATTR4_WORD0_ACL) { | |
1592 | struct nfs4_ace *ace; | |
1593 | struct list_head *h; | |
1594 | ||
1595 | if (acl == NULL) { | |
1596 | if ((buflen -= 4) < 0) | |
1597 | goto out_resource; | |
1598 | ||
1599 | WRITE32(0); | |
1600 | goto out_acl; | |
1601 | } | |
1602 | if ((buflen -= 4) < 0) | |
1603 | goto out_resource; | |
1604 | WRITE32(acl->naces); | |
1605 | ||
1606 | list_for_each(h, &acl->ace_head) { | |
1607 | ace = list_entry(h, struct nfs4_ace, l_ace); | |
1608 | ||
1609 | if ((buflen -= 4*3) < 0) | |
1610 | goto out_resource; | |
1611 | WRITE32(ace->type); | |
1612 | WRITE32(ace->flag); | |
1613 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); | |
1614 | status = nfsd4_encode_aclname(rqstp, ace->whotype, | |
1615 | ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP, | |
1616 | &p, &buflen); | |
1617 | if (status == nfserr_resource) | |
1618 | goto out_resource; | |
1619 | if (status) | |
1620 | goto out; | |
1621 | } | |
1622 | } | |
1623 | out_acl: | |
1624 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
1625 | if ((buflen -= 4) < 0) | |
1626 | goto out_resource; | |
1627 | WRITE32(aclsupport ? | |
1628 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); | |
1629 | } | |
1630 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
1631 | if ((buflen -= 4) < 0) | |
1632 | goto out_resource; | |
1633 | WRITE32(1); | |
1634 | } | |
1635 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
1636 | if ((buflen -= 4) < 0) | |
1637 | goto out_resource; | |
1638 | WRITE32(1); | |
1639 | } | |
1640 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
1641 | if ((buflen -= 4) < 0) | |
1642 | goto out_resource; | |
1643 | WRITE32(1); | |
1644 | } | |
1645 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
1646 | if ((buflen -= 4) < 0) | |
1647 | goto out_resource; | |
1648 | WRITE32(1); | |
1649 | } | |
1650 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
1651 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; | |
1652 | if (buflen < 0) | |
1653 | goto out_resource; | |
1654 | WRITE32(fhp->fh_handle.fh_size); | |
1655 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); | |
1656 | } | |
1657 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
1658 | if ((buflen -= 8) < 0) | |
1659 | goto out_resource; | |
1660 | WRITE64((u64) stat.ino); | |
1661 | } | |
1662 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
1663 | if ((buflen -= 8) < 0) | |
1664 | goto out_resource; | |
1665 | WRITE64((u64) statfs.f_ffree); | |
1666 | } | |
1667 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
1668 | if ((buflen -= 8) < 0) | |
1669 | goto out_resource; | |
1670 | WRITE64((u64) statfs.f_ffree); | |
1671 | } | |
1672 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
1673 | if ((buflen -= 8) < 0) | |
1674 | goto out_resource; | |
1675 | WRITE64((u64) statfs.f_files); | |
1676 | } | |
81c3f413 BF |
1677 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
1678 | status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); | |
1679 | if (status == nfserr_resource) | |
1680 | goto out_resource; | |
1681 | if (status) | |
1682 | goto out; | |
1683 | } | |
1da177e4 LT |
1684 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
1685 | if ((buflen -= 4) < 0) | |
1686 | goto out_resource; | |
1687 | WRITE32(1); | |
1688 | } | |
1689 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
1690 | if ((buflen -= 8) < 0) | |
1691 | goto out_resource; | |
1692 | WRITE64(~(u64)0); | |
1693 | } | |
1694 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
1695 | if ((buflen -= 4) < 0) | |
1696 | goto out_resource; | |
1697 | WRITE32(255); | |
1698 | } | |
1699 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
1700 | if ((buflen -= 4) < 0) | |
1701 | goto out_resource; | |
1702 | WRITE32(~(u32) 0); | |
1703 | } | |
1704 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
1705 | if ((buflen -= 8) < 0) | |
1706 | goto out_resource; | |
7adae489 | 1707 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
1708 | } |
1709 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
1710 | if ((buflen -= 8) < 0) | |
1711 | goto out_resource; | |
7adae489 | 1712 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
1713 | } |
1714 | if (bmval1 & FATTR4_WORD1_MODE) { | |
1715 | if ((buflen -= 4) < 0) | |
1716 | goto out_resource; | |
1717 | WRITE32(stat.mode & S_IALLUGO); | |
1718 | } | |
1719 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
1720 | if ((buflen -= 4) < 0) | |
1721 | goto out_resource; | |
1722 | WRITE32(1); | |
1723 | } | |
1724 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
1725 | if ((buflen -= 4) < 0) | |
1726 | goto out_resource; | |
1727 | WRITE32(stat.nlink); | |
1728 | } | |
1729 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
1730 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); | |
1731 | if (status == nfserr_resource) | |
1732 | goto out_resource; | |
1733 | if (status) | |
1734 | goto out; | |
1735 | } | |
1736 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
1737 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); | |
1738 | if (status == nfserr_resource) | |
1739 | goto out_resource; | |
1740 | if (status) | |
1741 | goto out; | |
1742 | } | |
1743 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
1744 | if ((buflen -= 8) < 0) | |
1745 | goto out_resource; | |
1746 | WRITE32((u32) MAJOR(stat.rdev)); | |
1747 | WRITE32((u32) MINOR(stat.rdev)); | |
1748 | } | |
1749 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
1750 | if ((buflen -= 8) < 0) | |
1751 | goto out_resource; | |
1752 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
1753 | WRITE64(dummy64); | |
1754 | } | |
1755 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
1756 | if ((buflen -= 8) < 0) | |
1757 | goto out_resource; | |
1758 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
1759 | WRITE64(dummy64); | |
1760 | } | |
1761 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
1762 | if ((buflen -= 8) < 0) | |
1763 | goto out_resource; | |
1764 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
1765 | WRITE64(dummy64); | |
1766 | } | |
1767 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
1768 | if ((buflen -= 8) < 0) | |
1769 | goto out_resource; | |
1770 | dummy64 = (u64)stat.blocks << 9; | |
1771 | WRITE64(dummy64); | |
1772 | } | |
1773 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
1774 | if ((buflen -= 12) < 0) | |
1775 | goto out_resource; | |
1776 | WRITE32(0); | |
1777 | WRITE32(stat.atime.tv_sec); | |
1778 | WRITE32(stat.atime.tv_nsec); | |
1779 | } | |
1780 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
1781 | if ((buflen -= 12) < 0) | |
1782 | goto out_resource; | |
1783 | WRITE32(0); | |
1784 | WRITE32(1); | |
1785 | WRITE32(0); | |
1786 | } | |
1787 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
1788 | if ((buflen -= 12) < 0) | |
1789 | goto out_resource; | |
1790 | WRITE32(0); | |
1791 | WRITE32(stat.ctime.tv_sec); | |
1792 | WRITE32(stat.ctime.tv_nsec); | |
1793 | } | |
1794 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
1795 | if ((buflen -= 12) < 0) | |
1796 | goto out_resource; | |
1797 | WRITE32(0); | |
1798 | WRITE32(stat.mtime.tv_sec); | |
1799 | WRITE32(stat.mtime.tv_nsec); | |
1800 | } | |
1801 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
1802 | struct dentry *mnt_pnt, *mnt_root; | |
1803 | ||
1804 | if ((buflen -= 8) < 0) | |
1805 | goto out_resource; | |
1806 | mnt_root = exp->ex_mnt->mnt_root; | |
1807 | if (mnt_root->d_inode == dentry->d_inode) { | |
1808 | mnt_pnt = exp->ex_mnt->mnt_mountpoint; | |
1809 | WRITE64((u64) mnt_pnt->d_inode->i_ino); | |
1810 | } else | |
1811 | WRITE64((u64) stat.ino); | |
1812 | } | |
1813 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
1814 | *countp = p - buffer; | |
1815 | status = nfs_ok; | |
1816 | ||
1817 | out: | |
1818 | nfs4_acl_free(acl); | |
1819 | if (fhp == &tempfh) | |
1820 | fh_put(&tempfh); | |
1821 | return status; | |
1822 | out_nfserr: | |
b8dd7b9a | 1823 | status = nfserrno(err); |
1da177e4 LT |
1824 | goto out; |
1825 | out_resource: | |
1826 | *countp = 0; | |
1827 | status = nfserr_resource; | |
1828 | goto out; | |
1829 | out_serverfault: | |
1830 | status = nfserr_serverfault; | |
1831 | goto out; | |
1832 | } | |
1833 | ||
b37ad28b | 1834 | static __be32 |
1da177e4 | 1835 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, |
2ebbc012 | 1836 | const char *name, int namlen, __be32 *p, int *buflen) |
1da177e4 LT |
1837 | { |
1838 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
1839 | struct dentry *dentry; | |
b37ad28b | 1840 | __be32 nfserr; |
1da177e4 LT |
1841 | |
1842 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
1843 | if (IS_ERR(dentry)) | |
1844 | return nfserrno(PTR_ERR(dentry)); | |
1845 | ||
1846 | exp_get(exp); | |
1847 | if (d_mountpoint(dentry)) { | |
1848 | if (nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp)) { | |
1849 | /* | |
1850 | * -EAGAIN is the only error returned from | |
1851 | * nfsd_cross_mnt() and it indicates that an | |
1852 | * up-call has been initiated to fill in the export | |
1853 | * options on exp. When the answer comes back, | |
1854 | * this call will be retried. | |
1855 | */ | |
1856 | nfserr = nfserr_dropit; | |
1857 | goto out_put; | |
1858 | } | |
1859 | ||
1860 | } | |
1861 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, | |
1862 | cd->rd_rqstp); | |
1863 | out_put: | |
1864 | dput(dentry); | |
1865 | exp_put(exp); | |
1866 | return nfserr; | |
1867 | } | |
1868 | ||
2ebbc012 | 1869 | static __be32 * |
b37ad28b | 1870 | nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr) |
1da177e4 | 1871 | { |
2ebbc012 | 1872 | __be32 *attrlenp; |
1da177e4 LT |
1873 | |
1874 | if (buflen < 6) | |
1875 | return NULL; | |
1876 | *p++ = htonl(2); | |
1877 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
1878 | *p++ = htonl(0); /* bmval1 */ | |
1879 | ||
1880 | attrlenp = p++; | |
1881 | *p++ = nfserr; /* no htonl */ | |
1882 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
1883 | return p; | |
1884 | } | |
1885 | ||
1886 | static int | |
1887 | nfsd4_encode_dirent(struct readdir_cd *ccd, const char *name, int namlen, | |
1888 | loff_t offset, ino_t ino, unsigned int d_type) | |
1889 | { | |
1890 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); | |
1891 | int buflen; | |
2ebbc012 | 1892 | __be32 *p = cd->buffer; |
b37ad28b | 1893 | __be32 nfserr = nfserr_toosmall; |
1da177e4 LT |
1894 | |
1895 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
1896 | if (name && isdotent(name, namlen)) { | |
1897 | cd->common.err = nfs_ok; | |
1898 | return 0; | |
1899 | } | |
1900 | ||
1901 | if (cd->offset) | |
1902 | xdr_encode_hyper(cd->offset, (u64) offset); | |
1903 | ||
1904 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); | |
1905 | if (buflen < 0) | |
1906 | goto fail; | |
1907 | ||
1908 | *p++ = xdr_one; /* mark entry present */ | |
1909 | cd->offset = p; /* remember pointer */ | |
1910 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ | |
1911 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
1912 | ||
1913 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen); | |
1914 | switch (nfserr) { | |
1915 | case nfs_ok: | |
1916 | p += buflen; | |
1917 | break; | |
1918 | case nfserr_resource: | |
1919 | nfserr = nfserr_toosmall; | |
1920 | goto fail; | |
1921 | case nfserr_dropit: | |
1922 | goto fail; | |
1923 | default: | |
1924 | /* | |
1925 | * If the client requested the RDATTR_ERROR attribute, | |
1926 | * we stuff the error code into this attribute | |
1927 | * and continue. If this attribute was not requested, | |
1928 | * then in accordance with the spec, we fail the | |
1929 | * entire READDIR operation(!) | |
1930 | */ | |
1931 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
1932 | goto fail; | |
1da177e4 | 1933 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
34081efc FI |
1934 | if (p == NULL) { |
1935 | nfserr = nfserr_toosmall; | |
1da177e4 | 1936 | goto fail; |
34081efc | 1937 | } |
1da177e4 LT |
1938 | } |
1939 | cd->buflen -= (p - cd->buffer); | |
1940 | cd->buffer = p; | |
1941 | cd->common.err = nfs_ok; | |
1942 | return 0; | |
1943 | fail: | |
1944 | cd->common.err = nfserr; | |
1945 | return -EINVAL; | |
1946 | } | |
1947 | ||
1948 | static void | |
b37ad28b | 1949 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 LT |
1950 | { |
1951 | ENCODE_HEAD; | |
1952 | ||
1953 | if (!nfserr) { | |
1954 | RESERVE_SPACE(8); | |
1955 | WRITE32(access->ac_supported); | |
1956 | WRITE32(access->ac_resp_access); | |
1957 | ADJUST_ARGS(); | |
1958 | } | |
1959 | } | |
1960 | ||
1961 | static void | |
b37ad28b | 1962 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 LT |
1963 | { |
1964 | ENCODE_SEQID_OP_HEAD; | |
1965 | ||
1966 | if (!nfserr) { | |
1967 | RESERVE_SPACE(sizeof(stateid_t)); | |
1968 | WRITE32(close->cl_stateid.si_generation); | |
1969 | WRITEMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
1970 | ADJUST_ARGS(); | |
1971 | } | |
1972 | ENCODE_SEQID_OP_TAIL(close->cl_stateowner); | |
1973 | } | |
1974 | ||
1975 | ||
1976 | static void | |
b37ad28b | 1977 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 LT |
1978 | { |
1979 | ENCODE_HEAD; | |
1980 | ||
1981 | if (!nfserr) { | |
1982 | RESERVE_SPACE(8); | |
1983 | WRITEMEM(commit->co_verf.data, 8); | |
1984 | ADJUST_ARGS(); | |
1985 | } | |
1986 | } | |
1987 | ||
1988 | static void | |
b37ad28b | 1989 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 LT |
1990 | { |
1991 | ENCODE_HEAD; | |
1992 | ||
1993 | if (!nfserr) { | |
1994 | RESERVE_SPACE(32); | |
1995 | WRITECINFO(create->cr_cinfo); | |
1996 | WRITE32(2); | |
1997 | WRITE32(create->cr_bmval[0]); | |
1998 | WRITE32(create->cr_bmval[1]); | |
1999 | ADJUST_ARGS(); | |
2000 | } | |
2001 | } | |
2002 | ||
b37ad28b AV |
2003 | static __be32 |
2004 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
2005 | { |
2006 | struct svc_fh *fhp = getattr->ga_fhp; | |
2007 | int buflen; | |
2008 | ||
2009 | if (nfserr) | |
2010 | return nfserr; | |
2011 | ||
2012 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); | |
2013 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, | |
2014 | resp->p, &buflen, getattr->ga_bmval, | |
2015 | resp->rqstp); | |
1da177e4 LT |
2016 | if (!nfserr) |
2017 | resp->p += buflen; | |
2018 | return nfserr; | |
2019 | } | |
2020 | ||
2021 | static void | |
b37ad28b | 2022 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh *fhp) |
1da177e4 LT |
2023 | { |
2024 | unsigned int len; | |
2025 | ENCODE_HEAD; | |
2026 | ||
2027 | if (!nfserr) { | |
2028 | len = fhp->fh_handle.fh_size; | |
2029 | RESERVE_SPACE(len + 4); | |
2030 | WRITE32(len); | |
2031 | WRITEMEM(&fhp->fh_handle.fh_base, len); | |
2032 | ADJUST_ARGS(); | |
2033 | } | |
2034 | } | |
2035 | ||
2036 | /* | |
2037 | * Including all fields other than the name, a LOCK4denied structure requires | |
2038 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
2039 | */ | |
2040 | static void | |
2041 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) | |
2042 | { | |
2043 | ENCODE_HEAD; | |
2044 | ||
2045 | RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0)); | |
2046 | WRITE64(ld->ld_start); | |
2047 | WRITE64(ld->ld_length); | |
2048 | WRITE32(ld->ld_type); | |
2049 | if (ld->ld_sop) { | |
2050 | WRITEMEM(&ld->ld_clientid, 8); | |
2051 | WRITE32(ld->ld_sop->so_owner.len); | |
2052 | WRITEMEM(ld->ld_sop->so_owner.data, ld->ld_sop->so_owner.len); | |
2053 | kref_put(&ld->ld_sop->so_ref, nfs4_free_stateowner); | |
2054 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ | |
2055 | WRITE64((u64)0); /* clientid */ | |
2056 | WRITE32(0); /* length of owner name */ | |
2057 | } | |
2058 | ADJUST_ARGS(); | |
2059 | } | |
2060 | ||
2061 | static void | |
b37ad28b | 2062 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 2063 | { |
1da177e4 LT |
2064 | ENCODE_SEQID_OP_HEAD; |
2065 | ||
2066 | if (!nfserr) { | |
2067 | RESERVE_SPACE(4 + sizeof(stateid_t)); | |
2068 | WRITE32(lock->lk_resp_stateid.si_generation); | |
2069 | WRITEMEM(&lock->lk_resp_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
2070 | ADJUST_ARGS(); | |
2071 | } else if (nfserr == nfserr_denied) | |
2072 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); | |
2073 | ||
3a65588a | 2074 | ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner); |
1da177e4 LT |
2075 | } |
2076 | ||
2077 | static void | |
b37ad28b | 2078 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 LT |
2079 | { |
2080 | if (nfserr == nfserr_denied) | |
2081 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); | |
2082 | } | |
2083 | ||
2084 | static void | |
b37ad28b | 2085 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 LT |
2086 | { |
2087 | ENCODE_SEQID_OP_HEAD; | |
2088 | ||
2089 | if (!nfserr) { | |
2090 | RESERVE_SPACE(sizeof(stateid_t)); | |
2091 | WRITE32(locku->lu_stateid.si_generation); | |
2092 | WRITEMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
2093 | ADJUST_ARGS(); | |
2094 | } | |
2095 | ||
2096 | ENCODE_SEQID_OP_TAIL(locku->lu_stateowner); | |
2097 | } | |
2098 | ||
2099 | ||
2100 | static void | |
b37ad28b | 2101 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 LT |
2102 | { |
2103 | ENCODE_HEAD; | |
2104 | ||
2105 | if (!nfserr) { | |
2106 | RESERVE_SPACE(20); | |
2107 | WRITECINFO(link->li_cinfo); | |
2108 | ADJUST_ARGS(); | |
2109 | } | |
2110 | } | |
2111 | ||
2112 | ||
2113 | static void | |
b37ad28b | 2114 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 LT |
2115 | { |
2116 | ENCODE_SEQID_OP_HEAD; | |
2117 | ||
2118 | if (nfserr) | |
2119 | goto out; | |
2120 | ||
2121 | RESERVE_SPACE(36 + sizeof(stateid_t)); | |
2122 | WRITE32(open->op_stateid.si_generation); | |
2123 | WRITEMEM(&open->op_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
2124 | WRITECINFO(open->op_cinfo); | |
2125 | WRITE32(open->op_rflags); | |
2126 | WRITE32(2); | |
2127 | WRITE32(open->op_bmval[0]); | |
2128 | WRITE32(open->op_bmval[1]); | |
2129 | WRITE32(open->op_delegate_type); | |
2130 | ADJUST_ARGS(); | |
2131 | ||
2132 | switch (open->op_delegate_type) { | |
2133 | case NFS4_OPEN_DELEGATE_NONE: | |
2134 | break; | |
2135 | case NFS4_OPEN_DELEGATE_READ: | |
2136 | RESERVE_SPACE(20 + sizeof(stateid_t)); | |
2137 | WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t)); | |
7b190fec | 2138 | WRITE32(open->op_recall); |
1da177e4 LT |
2139 | |
2140 | /* | |
2141 | * TODO: ACE's in delegations | |
2142 | */ | |
2143 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2144 | WRITE32(0); | |
2145 | WRITE32(0); | |
2146 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2147 | ADJUST_ARGS(); | |
2148 | break; | |
2149 | case NFS4_OPEN_DELEGATE_WRITE: | |
2150 | RESERVE_SPACE(32 + sizeof(stateid_t)); | |
2151 | WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t)); | |
2152 | WRITE32(0); | |
2153 | ||
2154 | /* | |
2155 | * TODO: space_limit's in delegations | |
2156 | */ | |
2157 | WRITE32(NFS4_LIMIT_SIZE); | |
2158 | WRITE32(~(u32)0); | |
2159 | WRITE32(~(u32)0); | |
2160 | ||
2161 | /* | |
2162 | * TODO: ACE's in delegations | |
2163 | */ | |
2164 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2165 | WRITE32(0); | |
2166 | WRITE32(0); | |
2167 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2168 | ADJUST_ARGS(); | |
2169 | break; | |
2170 | default: | |
2171 | BUG(); | |
2172 | } | |
2173 | /* XXX save filehandle here */ | |
2174 | out: | |
2175 | ENCODE_SEQID_OP_TAIL(open->op_stateowner); | |
2176 | } | |
2177 | ||
2178 | static void | |
b37ad28b | 2179 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 LT |
2180 | { |
2181 | ENCODE_SEQID_OP_HEAD; | |
2182 | ||
2183 | if (!nfserr) { | |
2184 | RESERVE_SPACE(sizeof(stateid_t)); | |
2185 | WRITE32(oc->oc_resp_stateid.si_generation); | |
2186 | WRITEMEM(&oc->oc_resp_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
2187 | ADJUST_ARGS(); | |
2188 | } | |
2189 | ||
2190 | ENCODE_SEQID_OP_TAIL(oc->oc_stateowner); | |
2191 | } | |
2192 | ||
2193 | static void | |
b37ad28b | 2194 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 LT |
2195 | { |
2196 | ENCODE_SEQID_OP_HEAD; | |
2197 | ||
2198 | if (!nfserr) { | |
2199 | RESERVE_SPACE(sizeof(stateid_t)); | |
2200 | WRITE32(od->od_stateid.si_generation); | |
2201 | WRITEMEM(&od->od_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
2202 | ADJUST_ARGS(); | |
2203 | } | |
2204 | ||
2205 | ENCODE_SEQID_OP_TAIL(od->od_stateowner); | |
2206 | } | |
2207 | ||
b37ad28b AV |
2208 | static __be32 |
2209 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
44524359 | 2210 | struct nfsd4_read *read) |
1da177e4 LT |
2211 | { |
2212 | u32 eof; | |
2213 | int v, pn; | |
2214 | unsigned long maxcount; | |
2215 | long len; | |
2216 | ENCODE_HEAD; | |
2217 | ||
2218 | if (nfserr) | |
2219 | return nfserr; | |
2220 | if (resp->xbuf->page_len) | |
2221 | return nfserr_resource; | |
2222 | ||
2223 | RESERVE_SPACE(8); /* eof flag and byte count */ | |
2224 | ||
7adae489 | 2225 | maxcount = svc_max_payload(resp->rqstp); |
1da177e4 LT |
2226 | if (maxcount > read->rd_length) |
2227 | maxcount = read->rd_length; | |
2228 | ||
2229 | len = maxcount; | |
2230 | v = 0; | |
2231 | while (len > 0) { | |
44524359 | 2232 | pn = resp->rqstp->rq_resused++; |
3cc03b16 | 2233 | resp->rqstp->rq_vec[v].iov_base = |
44524359 | 2234 | page_address(resp->rqstp->rq_respages[pn]); |
3cc03b16 | 2235 | resp->rqstp->rq_vec[v].iov_len = |
44524359 | 2236 | len < PAGE_SIZE ? len : PAGE_SIZE; |
1da177e4 LT |
2237 | v++; |
2238 | len -= PAGE_SIZE; | |
2239 | } | |
2240 | read->rd_vlen = v; | |
2241 | ||
2242 | nfserr = nfsd_read(read->rd_rqstp, read->rd_fhp, read->rd_filp, | |
3cc03b16 | 2243 | read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, |
1da177e4 LT |
2244 | &maxcount); |
2245 | ||
2246 | if (nfserr == nfserr_symlink) | |
2247 | nfserr = nfserr_inval; | |
2248 | if (nfserr) | |
2249 | return nfserr; | |
44524359 N |
2250 | eof = (read->rd_offset + maxcount >= |
2251 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 LT |
2252 | |
2253 | WRITE32(eof); | |
2254 | WRITE32(maxcount); | |
2255 | ADJUST_ARGS(); | |
6ed6decc N |
2256 | resp->xbuf->head[0].iov_len = (char*)p |
2257 | - (char*)resp->xbuf->head[0].iov_base; | |
1da177e4 LT |
2258 | resp->xbuf->page_len = maxcount; |
2259 | ||
6ed6decc | 2260 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2261 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2262 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2263 | if (maxcount&3) { |
6ed6decc N |
2264 | RESERVE_SPACE(4); |
2265 | WRITE32(0); | |
1da177e4 LT |
2266 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2267 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2268 | ADJUST_ARGS(); |
1da177e4 LT |
2269 | } |
2270 | return 0; | |
2271 | } | |
2272 | ||
b37ad28b AV |
2273 | static __be32 |
2274 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
2275 | { |
2276 | int maxcount; | |
2277 | char *page; | |
2278 | ENCODE_HEAD; | |
2279 | ||
2280 | if (nfserr) | |
2281 | return nfserr; | |
2282 | if (resp->xbuf->page_len) | |
2283 | return nfserr_resource; | |
2284 | ||
44524359 | 2285 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
1da177e4 LT |
2286 | |
2287 | maxcount = PAGE_SIZE; | |
2288 | RESERVE_SPACE(4); | |
2289 | ||
2290 | /* | |
2291 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
2292 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
2293 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
2294 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
2295 | */ | |
2296 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); | |
2297 | if (nfserr == nfserr_isdir) | |
2298 | return nfserr_inval; | |
2299 | if (nfserr) | |
2300 | return nfserr; | |
2301 | ||
2302 | WRITE32(maxcount); | |
2303 | ADJUST_ARGS(); | |
6ed6decc N |
2304 | resp->xbuf->head[0].iov_len = (char*)p |
2305 | - (char*)resp->xbuf->head[0].iov_base; | |
2306 | resp->xbuf->page_len = maxcount; | |
1da177e4 | 2307 | |
6ed6decc | 2308 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2309 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2310 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2311 | if (maxcount&3) { |
6ed6decc N |
2312 | RESERVE_SPACE(4); |
2313 | WRITE32(0); | |
1da177e4 LT |
2314 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2315 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2316 | ADJUST_ARGS(); |
1da177e4 LT |
2317 | } |
2318 | return 0; | |
2319 | } | |
2320 | ||
b37ad28b AV |
2321 | static __be32 |
2322 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
2323 | { |
2324 | int maxcount; | |
2325 | loff_t offset; | |
2ebbc012 | 2326 | __be32 *page, *savep, *tailbase; |
1da177e4 LT |
2327 | ENCODE_HEAD; |
2328 | ||
2329 | if (nfserr) | |
2330 | return nfserr; | |
2331 | if (resp->xbuf->page_len) | |
2332 | return nfserr_resource; | |
2333 | ||
2334 | RESERVE_SPACE(8); /* verifier */ | |
2335 | savep = p; | |
2336 | ||
2337 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
2338 | WRITE32(0); | |
2339 | WRITE32(0); | |
2340 | ADJUST_ARGS(); | |
2341 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; | |
bb6e8a9f | 2342 | tailbase = p; |
1da177e4 LT |
2343 | |
2344 | maxcount = PAGE_SIZE; | |
2345 | if (maxcount > readdir->rd_maxcount) | |
2346 | maxcount = readdir->rd_maxcount; | |
2347 | ||
2348 | /* | |
2349 | * Convert from bytes to words, account for the two words already | |
2350 | * written, make sure to leave two words at the end for the next | |
2351 | * pointer and eof field. | |
2352 | */ | |
2353 | maxcount = (maxcount >> 2) - 4; | |
2354 | if (maxcount < 0) { | |
2355 | nfserr = nfserr_toosmall; | |
2356 | goto err_no_verf; | |
2357 | } | |
2358 | ||
44524359 | 2359 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
1da177e4 LT |
2360 | readdir->common.err = 0; |
2361 | readdir->buflen = maxcount; | |
2362 | readdir->buffer = page; | |
2363 | readdir->offset = NULL; | |
2364 | ||
2365 | offset = readdir->rd_cookie; | |
2366 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
2367 | &offset, | |
2368 | &readdir->common, nfsd4_encode_dirent); | |
2369 | if (nfserr == nfs_ok && | |
2370 | readdir->common.err == nfserr_toosmall && | |
2371 | readdir->buffer == page) | |
2372 | nfserr = nfserr_toosmall; | |
2373 | if (nfserr == nfserr_symlink) | |
2374 | nfserr = nfserr_notdir; | |
2375 | if (nfserr) | |
2376 | goto err_no_verf; | |
2377 | ||
2378 | if (readdir->offset) | |
2379 | xdr_encode_hyper(readdir->offset, offset); | |
2380 | ||
2381 | p = readdir->buffer; | |
2382 | *p++ = 0; /* no more entries */ | |
2383 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
44524359 N |
2384 | resp->xbuf->page_len = ((char*)p) - (char*)page_address( |
2385 | resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); | |
1da177e4 | 2386 | |
bb6e8a9f | 2387 | /* Use rest of head for padding and remaining ops: */ |
bb6e8a9f | 2388 | resp->xbuf->tail[0].iov_base = tailbase; |
1da177e4 LT |
2389 | resp->xbuf->tail[0].iov_len = 0; |
2390 | resp->p = resp->xbuf->tail[0].iov_base; | |
bb6e8a9f | 2391 | resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; |
1da177e4 LT |
2392 | |
2393 | return 0; | |
2394 | err_no_verf: | |
2395 | p = savep; | |
2396 | ADJUST_ARGS(); | |
2397 | return nfserr; | |
2398 | } | |
2399 | ||
2400 | static void | |
b37ad28b | 2401 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 LT |
2402 | { |
2403 | ENCODE_HEAD; | |
2404 | ||
2405 | if (!nfserr) { | |
2406 | RESERVE_SPACE(20); | |
2407 | WRITECINFO(remove->rm_cinfo); | |
2408 | ADJUST_ARGS(); | |
2409 | } | |
2410 | } | |
2411 | ||
2412 | static void | |
b37ad28b | 2413 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 LT |
2414 | { |
2415 | ENCODE_HEAD; | |
2416 | ||
2417 | if (!nfserr) { | |
2418 | RESERVE_SPACE(40); | |
2419 | WRITECINFO(rename->rn_sinfo); | |
2420 | WRITECINFO(rename->rn_tinfo); | |
2421 | ADJUST_ARGS(); | |
2422 | } | |
2423 | } | |
2424 | ||
2425 | /* | |
2426 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
2427 | * regardless of the error status. | |
2428 | */ | |
2429 | static void | |
b37ad28b | 2430 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 LT |
2431 | { |
2432 | ENCODE_HEAD; | |
2433 | ||
2434 | RESERVE_SPACE(12); | |
2435 | if (nfserr) { | |
2436 | WRITE32(2); | |
2437 | WRITE32(0); | |
2438 | WRITE32(0); | |
2439 | } | |
2440 | else { | |
2441 | WRITE32(2); | |
2442 | WRITE32(setattr->sa_bmval[0]); | |
2443 | WRITE32(setattr->sa_bmval[1]); | |
2444 | } | |
2445 | ADJUST_ARGS(); | |
2446 | } | |
2447 | ||
2448 | static void | |
b37ad28b | 2449 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 LT |
2450 | { |
2451 | ENCODE_HEAD; | |
2452 | ||
2453 | if (!nfserr) { | |
2454 | RESERVE_SPACE(8 + sizeof(nfs4_verifier)); | |
2455 | WRITEMEM(&scd->se_clientid, 8); | |
2456 | WRITEMEM(&scd->se_confirm, sizeof(nfs4_verifier)); | |
2457 | ADJUST_ARGS(); | |
2458 | } | |
2459 | else if (nfserr == nfserr_clid_inuse) { | |
2460 | RESERVE_SPACE(8); | |
2461 | WRITE32(0); | |
2462 | WRITE32(0); | |
2463 | ADJUST_ARGS(); | |
2464 | } | |
2465 | } | |
2466 | ||
2467 | static void | |
b37ad28b | 2468 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 LT |
2469 | { |
2470 | ENCODE_HEAD; | |
2471 | ||
2472 | if (!nfserr) { | |
2473 | RESERVE_SPACE(16); | |
2474 | WRITE32(write->wr_bytes_written); | |
2475 | WRITE32(write->wr_how_written); | |
2476 | WRITEMEM(write->wr_verifier.data, 8); | |
2477 | ADJUST_ARGS(); | |
2478 | } | |
2479 | } | |
2480 | ||
2481 | void | |
2482 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
2483 | { | |
2ebbc012 | 2484 | __be32 *statp; |
1da177e4 LT |
2485 | ENCODE_HEAD; |
2486 | ||
2487 | RESERVE_SPACE(8); | |
2488 | WRITE32(op->opnum); | |
2489 | statp = p++; /* to be backfilled at the end */ | |
2490 | ADJUST_ARGS(); | |
2491 | ||
2492 | switch (op->opnum) { | |
2493 | case OP_ACCESS: | |
2494 | nfsd4_encode_access(resp, op->status, &op->u.access); | |
2495 | break; | |
2496 | case OP_CLOSE: | |
2497 | nfsd4_encode_close(resp, op->status, &op->u.close); | |
2498 | break; | |
2499 | case OP_COMMIT: | |
2500 | nfsd4_encode_commit(resp, op->status, &op->u.commit); | |
2501 | break; | |
2502 | case OP_CREATE: | |
2503 | nfsd4_encode_create(resp, op->status, &op->u.create); | |
2504 | break; | |
2505 | case OP_DELEGRETURN: | |
2506 | break; | |
2507 | case OP_GETATTR: | |
2508 | op->status = nfsd4_encode_getattr(resp, op->status, &op->u.getattr); | |
2509 | break; | |
2510 | case OP_GETFH: | |
2511 | nfsd4_encode_getfh(resp, op->status, op->u.getfh); | |
2512 | break; | |
2513 | case OP_LINK: | |
2514 | nfsd4_encode_link(resp, op->status, &op->u.link); | |
2515 | break; | |
2516 | case OP_LOCK: | |
2517 | nfsd4_encode_lock(resp, op->status, &op->u.lock); | |
2518 | break; | |
2519 | case OP_LOCKT: | |
2520 | nfsd4_encode_lockt(resp, op->status, &op->u.lockt); | |
2521 | break; | |
2522 | case OP_LOCKU: | |
2523 | nfsd4_encode_locku(resp, op->status, &op->u.locku); | |
2524 | break; | |
2525 | case OP_LOOKUP: | |
2526 | break; | |
2527 | case OP_LOOKUPP: | |
2528 | break; | |
2529 | case OP_NVERIFY: | |
2530 | break; | |
2531 | case OP_OPEN: | |
2532 | nfsd4_encode_open(resp, op->status, &op->u.open); | |
2533 | break; | |
2534 | case OP_OPEN_CONFIRM: | |
2535 | nfsd4_encode_open_confirm(resp, op->status, &op->u.open_confirm); | |
2536 | break; | |
2537 | case OP_OPEN_DOWNGRADE: | |
2538 | nfsd4_encode_open_downgrade(resp, op->status, &op->u.open_downgrade); | |
2539 | break; | |
2540 | case OP_PUTFH: | |
2541 | break; | |
2542 | case OP_PUTROOTFH: | |
2543 | break; | |
2544 | case OP_READ: | |
2545 | op->status = nfsd4_encode_read(resp, op->status, &op->u.read); | |
2546 | break; | |
2547 | case OP_READDIR: | |
2548 | op->status = nfsd4_encode_readdir(resp, op->status, &op->u.readdir); | |
2549 | break; | |
2550 | case OP_READLINK: | |
2551 | op->status = nfsd4_encode_readlink(resp, op->status, &op->u.readlink); | |
2552 | break; | |
2553 | case OP_REMOVE: | |
2554 | nfsd4_encode_remove(resp, op->status, &op->u.remove); | |
2555 | break; | |
2556 | case OP_RENAME: | |
2557 | nfsd4_encode_rename(resp, op->status, &op->u.rename); | |
2558 | break; | |
2559 | case OP_RENEW: | |
2560 | break; | |
2561 | case OP_RESTOREFH: | |
2562 | break; | |
2563 | case OP_SAVEFH: | |
2564 | break; | |
2565 | case OP_SETATTR: | |
2566 | nfsd4_encode_setattr(resp, op->status, &op->u.setattr); | |
2567 | break; | |
2568 | case OP_SETCLIENTID: | |
2569 | nfsd4_encode_setclientid(resp, op->status, &op->u.setclientid); | |
2570 | break; | |
2571 | case OP_SETCLIENTID_CONFIRM: | |
2572 | break; | |
2573 | case OP_VERIFY: | |
2574 | break; | |
2575 | case OP_WRITE: | |
2576 | nfsd4_encode_write(resp, op->status, &op->u.write); | |
2577 | break; | |
2578 | case OP_RELEASE_LOCKOWNER: | |
2579 | break; | |
2580 | default: | |
2581 | break; | |
2582 | } | |
2583 | ||
2584 | /* | |
2585 | * Note: We write the status directly, instead of using WRITE32(), | |
2586 | * since it is already in network byte order. | |
2587 | */ | |
2588 | *statp = op->status; | |
2589 | } | |
2590 | ||
2591 | /* | |
2592 | * Encode the reply stored in the stateowner reply cache | |
2593 | * | |
2594 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
2595 | * previously sent already encoded operation. | |
2596 | * | |
2597 | * called with nfs4_lock_state() held | |
2598 | */ | |
2599 | void | |
2600 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
2601 | { | |
2602 | ENCODE_HEAD; | |
2603 | struct nfs4_replay *rp = op->replay; | |
2604 | ||
2605 | BUG_ON(!rp); | |
2606 | ||
2607 | RESERVE_SPACE(8); | |
2608 | WRITE32(op->opnum); | |
2609 | *p++ = rp->rp_status; /* already xdr'ed */ | |
2610 | ADJUST_ARGS(); | |
2611 | ||
2612 | RESERVE_SPACE(rp->rp_buflen); | |
2613 | WRITEMEM(rp->rp_buf, rp->rp_buflen); | |
2614 | ADJUST_ARGS(); | |
2615 | } | |
2616 | ||
2617 | /* | |
2618 | * END OF "GENERIC" ENCODE ROUTINES. | |
2619 | */ | |
2620 | ||
2621 | int | |
2ebbc012 | 2622 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
2623 | { |
2624 | return xdr_ressize_check(rqstp, p); | |
2625 | } | |
2626 | ||
2627 | void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args) | |
2628 | { | |
2629 | if (args->ops != args->iops) { | |
2630 | kfree(args->ops); | |
2631 | args->ops = args->iops; | |
2632 | } | |
f99d49ad JJ |
2633 | kfree(args->tmpp); |
2634 | args->tmpp = NULL; | |
1da177e4 LT |
2635 | while (args->to_free) { |
2636 | struct tmpbuf *tb = args->to_free; | |
2637 | args->to_free = tb->next; | |
2638 | tb->release(tb->buf); | |
2639 | kfree(tb); | |
2640 | } | |
2641 | } | |
2642 | ||
2643 | int | |
2ebbc012 | 2644 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 2645 | { |
b37ad28b | 2646 | __be32 status; |
1da177e4 LT |
2647 | |
2648 | args->p = p; | |
2649 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
2650 | args->pagelist = rqstp->rq_arg.pages; | |
2651 | args->pagelen = rqstp->rq_arg.page_len; | |
2652 | args->tmpp = NULL; | |
2653 | args->to_free = NULL; | |
2654 | args->ops = args->iops; | |
2655 | args->rqstp = rqstp; | |
2656 | ||
2657 | status = nfsd4_decode_compound(args); | |
2658 | if (status) { | |
2659 | nfsd4_release_compoundargs(args); | |
2660 | } | |
2661 | return !status; | |
2662 | } | |
2663 | ||
2664 | int | |
2ebbc012 | 2665 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
2666 | { |
2667 | /* | |
2668 | * All that remains is to write the tag and operation count... | |
2669 | */ | |
2670 | struct kvec *iov; | |
2671 | p = resp->tagp; | |
2672 | *p++ = htonl(resp->taglen); | |
2673 | memcpy(p, resp->tag, resp->taglen); | |
2674 | p += XDR_QUADLEN(resp->taglen); | |
2675 | *p++ = htonl(resp->opcnt); | |
2676 | ||
2677 | if (rqstp->rq_res.page_len) | |
2678 | iov = &rqstp->rq_res.tail[0]; | |
2679 | else | |
2680 | iov = &rqstp->rq_res.head[0]; | |
2681 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; | |
2682 | BUG_ON(iov->iov_len > PAGE_SIZE); | |
2683 | return 1; | |
2684 | } | |
2685 | ||
2686 | /* | |
2687 | * Local variables: | |
2688 | * c-basic-offset: 8 | |
2689 | * End: | |
2690 | */ |