Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Server-side XDR for NFSv4 |
3 | * | |
4 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Kendrick Smith <kmsmith@umich.edu> | |
8 | * Andy Adamson <andros@umich.edu> | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or without | |
11 | * modification, are permitted provided that the following conditions | |
12 | * are met: | |
13 | * | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions and the following disclaimer. | |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in the | |
18 | * documentation and/or other materials provided with the distribution. | |
19 | * 3. Neither the name of the University nor the names of its | |
20 | * contributors may be used to endorse or promote products derived | |
21 | * from this software without specific prior written permission. | |
22 | * | |
23 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
24 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
25 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
26 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
30 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
31 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
32 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
33 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
34 | * | |
35 | * TODO: Neil Brown made the following observation: We currently | |
36 | * initially reserve NFSD_BUFSIZE space on the transmit queue and | |
37 | * never release any of that until the request is complete. | |
38 | * It would be good to calculate a new maximum response size while | |
39 | * decoding the COMPOUND, and call svc_reserve with this number | |
40 | * at the end of nfs4svc_decode_compoundargs. | |
41 | */ | |
42 | ||
5a0e3ad6 | 43 | #include <linux/slab.h> |
1da177e4 | 44 | #include <linux/namei.h> |
341eb184 | 45 | #include <linux/statfs.h> |
0733d213 | 46 | #include <linux/utsname.h> |
17456804 | 47 | #include <linux/pagemap.h> |
4796f457 | 48 | #include <linux/sunrpc/svcauth_gss.h> |
9a74af21 | 49 | |
2ca72e17 BF |
50 | #include "idmap.h" |
51 | #include "acl.h" | |
9a74af21 | 52 | #include "xdr4.h" |
0a3adade | 53 | #include "vfs.h" |
17456804 | 54 | #include "state.h" |
1091006c | 55 | #include "cache.h" |
3d733711 | 56 | #include "netns.h" |
2ca72e17 | 57 | |
18032ca0 DQ |
58 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
59 | #include <linux/security.h> | |
60 | #endif | |
61 | ||
62 | ||
1da177e4 LT |
63 | #define NFSDDBG_FACILITY NFSDDBG_XDR |
64 | ||
42ca0993 BF |
65 | /* |
66 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing | |
67 | * directory in order to indicate to the client that a filesystem boundary is present | |
68 | * We use a fixed fsid for a referral | |
69 | */ | |
70 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL | |
71 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL | |
72 | ||
b37ad28b | 73 | static __be32 |
a36b1725 | 74 | check_filename(char *str, int len) |
1da177e4 LT |
75 | { |
76 | int i; | |
77 | ||
78 | if (len == 0) | |
79 | return nfserr_inval; | |
80 | if (isdotent(str, len)) | |
a36b1725 | 81 | return nfserr_badname; |
1da177e4 LT |
82 | for (i = 0; i < len; i++) |
83 | if (str[i] == '/') | |
a36b1725 | 84 | return nfserr_badname; |
1da177e4 LT |
85 | return 0; |
86 | } | |
87 | ||
1da177e4 | 88 | #define DECODE_HEAD \ |
2ebbc012 | 89 | __be32 *p; \ |
b37ad28b | 90 | __be32 status |
1da177e4 LT |
91 | #define DECODE_TAIL \ |
92 | status = 0; \ | |
93 | out: \ | |
94 | return status; \ | |
95 | xdr_error: \ | |
817cb9d4 CL |
96 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
97 | __FILE__, __LINE__); \ | |
1da177e4 LT |
98 | status = nfserr_bad_xdr; \ |
99 | goto out | |
100 | ||
101 | #define READ32(x) (x) = ntohl(*p++) | |
102 | #define READ64(x) do { \ | |
103 | (x) = (u64)ntohl(*p++) << 32; \ | |
104 | (x) |= ntohl(*p++); \ | |
105 | } while (0) | |
106 | #define READTIME(x) do { \ | |
107 | p++; \ | |
108 | (x) = ntohl(*p++); \ | |
109 | p++; \ | |
110 | } while (0) | |
111 | #define READMEM(x,nbytes) do { \ | |
112 | x = (char *)p; \ | |
113 | p += XDR_QUADLEN(nbytes); \ | |
114 | } while (0) | |
115 | #define SAVEMEM(x,nbytes) do { \ | |
116 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
117 | savemem(argp, p, nbytes) : \ | |
118 | (char *)p)) { \ | |
817cb9d4 CL |
119 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
120 | __FILE__, __LINE__); \ | |
1da177e4 LT |
121 | goto xdr_error; \ |
122 | } \ | |
123 | p += XDR_QUADLEN(nbytes); \ | |
124 | } while (0) | |
125 | #define COPYMEM(x,nbytes) do { \ | |
126 | memcpy((x), p, nbytes); \ | |
127 | p += XDR_QUADLEN(nbytes); \ | |
128 | } while (0) | |
129 | ||
130 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ | |
131 | #define READ_BUF(nbytes) do { \ | |
132 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ | |
133 | p = argp->p; \ | |
134 | argp->p += XDR_QUADLEN(nbytes); \ | |
135 | } else if (!(p = read_buf(argp, nbytes))) { \ | |
817cb9d4 CL |
136 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
137 | __FILE__, __LINE__); \ | |
1da177e4 LT |
138 | goto xdr_error; \ |
139 | } \ | |
140 | } while (0) | |
141 | ||
590b7431 BF |
142 | static void next_decode_page(struct nfsd4_compoundargs *argp) |
143 | { | |
590b7431 | 144 | argp->p = page_address(argp->pagelist[0]); |
365da4ad | 145 | argp->pagelist++; |
590b7431 BF |
146 | if (argp->pagelen < PAGE_SIZE) { |
147 | argp->end = argp->p + (argp->pagelen>>2); | |
148 | argp->pagelen = 0; | |
149 | } else { | |
150 | argp->end = argp->p + (PAGE_SIZE>>2); | |
151 | argp->pagelen -= PAGE_SIZE; | |
152 | } | |
153 | } | |
154 | ||
ca2a05aa | 155 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
1da177e4 LT |
156 | { |
157 | /* We want more bytes than seem to be available. | |
158 | * Maybe we need a new page, maybe we have just run out | |
159 | */ | |
ca2a05aa | 160 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
2ebbc012 | 161 | __be32 *p; |
1da177e4 LT |
162 | if (avail + argp->pagelen < nbytes) |
163 | return NULL; | |
164 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ | |
165 | return NULL; | |
166 | /* ok, we can do it with the current plus the next page */ | |
167 | if (nbytes <= sizeof(argp->tmp)) | |
168 | p = argp->tmp; | |
169 | else { | |
f99d49ad | 170 | kfree(argp->tmpp); |
1da177e4 LT |
171 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
172 | if (!p) | |
173 | return NULL; | |
174 | ||
175 | } | |
ca2a05aa BF |
176 | /* |
177 | * The following memcpy is safe because read_buf is always | |
178 | * called with nbytes > avail, and the two cases above both | |
179 | * guarantee p points to at least nbytes bytes. | |
180 | */ | |
1da177e4 | 181 | memcpy(p, argp->p, avail); |
590b7431 | 182 | next_decode_page(argp); |
1da177e4 LT |
183 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); |
184 | argp->p += XDR_QUADLEN(nbytes - avail); | |
185 | return p; | |
186 | } | |
187 | ||
60adfc50 AA |
188 | static int zero_clientid(clientid_t *clid) |
189 | { | |
190 | return (clid->cl_boot == 0) && (clid->cl_id == 0); | |
191 | } | |
192 | ||
2d8498db CH |
193 | /** |
194 | * defer_free - mark an allocation as deferred freed | |
195 | * @argp: NFSv4 compound argument structure to be freed with | |
196 | * @release: release callback to free @p, typically kfree() | |
197 | * @p: pointer to be freed | |
198 | * | |
199 | * Marks @p to be freed when processing the compound operation | |
200 | * described in @argp finishes. | |
201 | */ | |
1da177e4 LT |
202 | static int |
203 | defer_free(struct nfsd4_compoundargs *argp, | |
204 | void (*release)(const void *), void *p) | |
205 | { | |
206 | struct tmpbuf *tb; | |
207 | ||
208 | tb = kmalloc(sizeof(*tb), GFP_KERNEL); | |
209 | if (!tb) | |
210 | return -ENOMEM; | |
211 | tb->buf = p; | |
212 | tb->release = release; | |
213 | tb->next = argp->to_free; | |
214 | argp->to_free = tb; | |
215 | return 0; | |
216 | } | |
217 | ||
2d8498db CH |
218 | /** |
219 | * savemem - duplicate a chunk of memory for later processing | |
220 | * @argp: NFSv4 compound argument structure to be freed with | |
221 | * @p: pointer to be duplicated | |
222 | * @nbytes: length to be duplicated | |
223 | * | |
224 | * Returns a pointer to a copy of @nbytes bytes of memory at @p | |
225 | * that are preserved until processing of the NFSv4 compound | |
226 | * operation described by @argp finishes. | |
227 | */ | |
2ebbc012 | 228 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
1da177e4 | 229 | { |
1da177e4 | 230 | if (p == argp->tmp) { |
67114fe6 | 231 | p = kmemdup(argp->tmp, nbytes, GFP_KERNEL); |
a4db5fe5 BF |
232 | if (!p) |
233 | return NULL; | |
1da177e4 | 234 | } else { |
73dff8be | 235 | BUG_ON(p != argp->tmpp); |
1da177e4 LT |
236 | argp->tmpp = NULL; |
237 | } | |
238 | if (defer_free(argp, kfree, p)) { | |
a4db5fe5 | 239 | kfree(p); |
1da177e4 LT |
240 | return NULL; |
241 | } else | |
242 | return (char *)p; | |
243 | } | |
244 | ||
b37ad28b | 245 | static __be32 |
1da177e4 LT |
246 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
247 | { | |
248 | u32 bmlen; | |
249 | DECODE_HEAD; | |
250 | ||
251 | bmval[0] = 0; | |
252 | bmval[1] = 0; | |
7e705706 | 253 | bmval[2] = 0; |
1da177e4 LT |
254 | |
255 | READ_BUF(4); | |
256 | READ32(bmlen); | |
257 | if (bmlen > 1000) | |
258 | goto xdr_error; | |
259 | ||
260 | READ_BUF(bmlen << 2); | |
261 | if (bmlen > 0) | |
262 | READ32(bmval[0]); | |
263 | if (bmlen > 1) | |
264 | READ32(bmval[1]); | |
7e705706 AA |
265 | if (bmlen > 2) |
266 | READ32(bmval[2]); | |
1da177e4 LT |
267 | |
268 | DECODE_TAIL; | |
269 | } | |
270 | ||
b37ad28b | 271 | static __be32 |
3c8e0316 | 272 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, |
18032ca0 DQ |
273 | struct iattr *iattr, struct nfs4_acl **acl, |
274 | struct xdr_netobj *label) | |
1da177e4 LT |
275 | { |
276 | int expected_len, len = 0; | |
277 | u32 dummy32; | |
278 | char *buf; | |
b8dd7b9a | 279 | int host_err; |
1da177e4 LT |
280 | |
281 | DECODE_HEAD; | |
282 | iattr->ia_valid = 0; | |
283 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
284 | return status; | |
285 | ||
1da177e4 LT |
286 | READ_BUF(4); |
287 | READ32(expected_len); | |
288 | ||
289 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
290 | READ_BUF(8); | |
291 | len += 8; | |
292 | READ64(iattr->ia_size); | |
293 | iattr->ia_valid |= ATTR_SIZE; | |
294 | } | |
295 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
64a817cf | 296 | u32 nace; |
28e05dd8 | 297 | struct nfs4_ace *ace; |
1da177e4 LT |
298 | |
299 | READ_BUF(4); len += 4; | |
300 | READ32(nace); | |
301 | ||
28e05dd8 BF |
302 | if (nace > NFS4_ACL_MAX) |
303 | return nfserr_resource; | |
304 | ||
305 | *acl = nfs4_acl_new(nace); | |
1da177e4 | 306 | if (*acl == NULL) { |
b8dd7b9a | 307 | host_err = -ENOMEM; |
1da177e4 LT |
308 | goto out_nfserr; |
309 | } | |
28e05dd8 | 310 | defer_free(argp, kfree, *acl); |
1da177e4 | 311 | |
28e05dd8 BF |
312 | (*acl)->naces = nace; |
313 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { | |
1da177e4 | 314 | READ_BUF(16); len += 16; |
28e05dd8 BF |
315 | READ32(ace->type); |
316 | READ32(ace->flag); | |
317 | READ32(ace->access_mask); | |
1da177e4 LT |
318 | READ32(dummy32); |
319 | READ_BUF(dummy32); | |
320 | len += XDR_QUADLEN(dummy32) << 2; | |
321 | READMEM(buf, dummy32); | |
28e05dd8 | 322 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
3c726023 | 323 | status = nfs_ok; |
28e05dd8 | 324 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ab8e4aee | 325 | ; |
28e05dd8 | 326 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
3c726023 | 327 | status = nfsd_map_name_to_gid(argp->rqstp, |
ab8e4aee | 328 | buf, dummy32, &ace->who_gid); |
1da177e4 | 329 | else |
3c726023 | 330 | status = nfsd_map_name_to_uid(argp->rqstp, |
ab8e4aee | 331 | buf, dummy32, &ace->who_uid); |
3c726023 BF |
332 | if (status) |
333 | return status; | |
1da177e4 LT |
334 | } |
335 | } else | |
336 | *acl = NULL; | |
337 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
338 | READ_BUF(4); | |
339 | len += 4; | |
340 | READ32(iattr->ia_mode); | |
341 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); | |
342 | iattr->ia_valid |= ATTR_MODE; | |
343 | } | |
344 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
345 | READ_BUF(4); | |
346 | len += 4; | |
347 | READ32(dummy32); | |
348 | READ_BUF(dummy32); | |
349 | len += (XDR_QUADLEN(dummy32) << 2); | |
350 | READMEM(buf, dummy32); | |
47c85291 N |
351 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
352 | return status; | |
1da177e4 LT |
353 | iattr->ia_valid |= ATTR_UID; |
354 | } | |
355 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
356 | READ_BUF(4); | |
357 | len += 4; | |
358 | READ32(dummy32); | |
359 | READ_BUF(dummy32); | |
360 | len += (XDR_QUADLEN(dummy32) << 2); | |
361 | READMEM(buf, dummy32); | |
47c85291 N |
362 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
363 | return status; | |
1da177e4 LT |
364 | iattr->ia_valid |= ATTR_GID; |
365 | } | |
366 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
367 | READ_BUF(4); | |
368 | len += 4; | |
369 | READ32(dummy32); | |
370 | switch (dummy32) { | |
371 | case NFS4_SET_TO_CLIENT_TIME: | |
372 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
373 | all 32 bits of 'nseconds'. */ | |
374 | READ_BUF(12); | |
375 | len += 12; | |
bf8d9097 | 376 | READ64(iattr->ia_atime.tv_sec); |
1da177e4 LT |
377 | READ32(iattr->ia_atime.tv_nsec); |
378 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) | |
379 | return nfserr_inval; | |
380 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); | |
381 | break; | |
382 | case NFS4_SET_TO_SERVER_TIME: | |
383 | iattr->ia_valid |= ATTR_ATIME; | |
384 | break; | |
385 | default: | |
386 | goto xdr_error; | |
387 | } | |
388 | } | |
1da177e4 LT |
389 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
390 | READ_BUF(4); | |
391 | len += 4; | |
392 | READ32(dummy32); | |
393 | switch (dummy32) { | |
394 | case NFS4_SET_TO_CLIENT_TIME: | |
395 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
396 | all 32 bits of 'nseconds'. */ | |
397 | READ_BUF(12); | |
398 | len += 12; | |
bf8d9097 | 399 | READ64(iattr->ia_mtime.tv_sec); |
1da177e4 LT |
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 | } | |
18032ca0 DQ |
412 | |
413 | label->len = 0; | |
414 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL | |
415 | if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) { | |
416 | READ_BUF(4); | |
417 | len += 4; | |
418 | READ32(dummy32); /* lfs: we don't use it */ | |
419 | READ_BUF(4); | |
420 | len += 4; | |
421 | READ32(dummy32); /* pi: we don't use it either */ | |
422 | READ_BUF(4); | |
423 | len += 4; | |
424 | READ32(dummy32); | |
425 | READ_BUF(dummy32); | |
426 | if (dummy32 > NFSD4_MAX_SEC_LABEL_LEN) | |
427 | return nfserr_badlabel; | |
428 | len += (XDR_QUADLEN(dummy32) << 2); | |
429 | READMEM(buf, dummy32); | |
430 | label->data = kzalloc(dummy32 + 1, GFP_KERNEL); | |
431 | if (!label->data) | |
432 | return nfserr_jukebox; | |
3378b7f4 | 433 | label->len = dummy32; |
18032ca0 DQ |
434 | defer_free(argp, kfree, label->data); |
435 | memcpy(label->data, buf, dummy32); | |
436 | } | |
437 | #endif | |
438 | ||
3c8e0316 YZ |
439 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
440 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 | |
441 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) | |
442 | READ_BUF(expected_len - len); | |
443 | else if (len != expected_len) | |
1da177e4 LT |
444 | goto xdr_error; |
445 | ||
446 | DECODE_TAIL; | |
447 | ||
448 | out_nfserr: | |
b8dd7b9a | 449 | status = nfserrno(host_err); |
1da177e4 LT |
450 | goto out; |
451 | } | |
452 | ||
e31a1b66 BH |
453 | static __be32 |
454 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
455 | { | |
456 | DECODE_HEAD; | |
457 | ||
458 | READ_BUF(sizeof(stateid_t)); | |
459 | READ32(sid->si_generation); | |
460 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
461 | ||
462 | DECODE_TAIL; | |
463 | } | |
464 | ||
b37ad28b | 465 | static __be32 |
1da177e4 LT |
466 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
467 | { | |
468 | DECODE_HEAD; | |
469 | ||
470 | READ_BUF(4); | |
471 | READ32(access->ac_req_access); | |
472 | ||
473 | DECODE_TAIL; | |
474 | } | |
475 | ||
acb2887e BF |
476 | static __be32 nfsd4_decode_cb_sec(struct nfsd4_compoundargs *argp, struct nfsd4_cb_sec *cbs) |
477 | { | |
478 | DECODE_HEAD; | |
12fc3e92 | 479 | u32 dummy, uid, gid; |
acb2887e BF |
480 | char *machine_name; |
481 | int i; | |
482 | int nr_secflavs; | |
483 | ||
484 | /* callback_sec_params4 */ | |
485 | READ_BUF(4); | |
486 | READ32(nr_secflavs); | |
57569a70 BF |
487 | if (nr_secflavs) |
488 | cbs->flavor = (u32)(-1); | |
489 | else | |
490 | /* Is this legal? Be generous, take it to mean AUTH_NONE: */ | |
491 | cbs->flavor = 0; | |
acb2887e BF |
492 | for (i = 0; i < nr_secflavs; ++i) { |
493 | READ_BUF(4); | |
494 | READ32(dummy); | |
495 | switch (dummy) { | |
496 | case RPC_AUTH_NULL: | |
497 | /* Nothing to read */ | |
12fc3e92 BF |
498 | if (cbs->flavor == (u32)(-1)) |
499 | cbs->flavor = RPC_AUTH_NULL; | |
acb2887e BF |
500 | break; |
501 | case RPC_AUTH_UNIX: | |
502 | READ_BUF(8); | |
503 | /* stamp */ | |
504 | READ32(dummy); | |
505 | ||
506 | /* machine name */ | |
507 | READ32(dummy); | |
508 | READ_BUF(dummy); | |
509 | SAVEMEM(machine_name, dummy); | |
510 | ||
511 | /* uid, gid */ | |
512 | READ_BUF(8); | |
12fc3e92 BF |
513 | READ32(uid); |
514 | READ32(gid); | |
acb2887e BF |
515 | |
516 | /* more gids */ | |
517 | READ_BUF(4); | |
518 | READ32(dummy); | |
519 | READ_BUF(dummy * 4); | |
12fc3e92 | 520 | if (cbs->flavor == (u32)(-1)) { |
03bc6d1c EB |
521 | kuid_t kuid = make_kuid(&init_user_ns, uid); |
522 | kgid_t kgid = make_kgid(&init_user_ns, gid); | |
523 | if (uid_valid(kuid) && gid_valid(kgid)) { | |
524 | cbs->uid = kuid; | |
525 | cbs->gid = kgid; | |
526 | cbs->flavor = RPC_AUTH_UNIX; | |
527 | } else { | |
528 | dprintk("RPC_AUTH_UNIX with invalid" | |
529 | "uid or gid ignoring!\n"); | |
530 | } | |
12fc3e92 | 531 | } |
acb2887e BF |
532 | break; |
533 | case RPC_AUTH_GSS: | |
534 | dprintk("RPC_AUTH_GSS callback secflavor " | |
535 | "not supported!\n"); | |
536 | READ_BUF(8); | |
537 | /* gcbp_service */ | |
538 | READ32(dummy); | |
539 | /* gcbp_handle_from_server */ | |
540 | READ32(dummy); | |
541 | READ_BUF(dummy); | |
542 | p += XDR_QUADLEN(dummy); | |
543 | /* gcbp_handle_from_client */ | |
544 | READ_BUF(4); | |
545 | READ32(dummy); | |
546 | READ_BUF(dummy); | |
547 | break; | |
548 | default: | |
549 | dprintk("Illegal callback secflavor\n"); | |
550 | return nfserr_inval; | |
551 | } | |
552 | } | |
553 | DECODE_TAIL; | |
554 | } | |
555 | ||
cb73a9f4 BF |
556 | static __be32 nfsd4_decode_backchannel_ctl(struct nfsd4_compoundargs *argp, struct nfsd4_backchannel_ctl *bc) |
557 | { | |
558 | DECODE_HEAD; | |
559 | ||
560 | READ_BUF(4); | |
561 | READ32(bc->bc_cb_program); | |
562 | nfsd4_decode_cb_sec(argp, &bc->bc_cb_sec); | |
563 | ||
564 | DECODE_TAIL; | |
565 | } | |
566 | ||
1d1bc8f2 BF |
567 | static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) |
568 | { | |
569 | DECODE_HEAD; | |
1d1bc8f2 BF |
570 | |
571 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 8); | |
572 | COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
573 | READ32(bcts->dir); | |
6ce2357f BS |
574 | /* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker |
575 | * could help us figure out we should be using it. */ | |
1d1bc8f2 BF |
576 | DECODE_TAIL; |
577 | } | |
578 | ||
b37ad28b | 579 | static __be32 |
1da177e4 LT |
580 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
581 | { | |
582 | DECODE_HEAD; | |
583 | ||
e31a1b66 | 584 | READ_BUF(4); |
1da177e4 | 585 | READ32(close->cl_seqid); |
e31a1b66 | 586 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
1da177e4 LT |
587 | |
588 | DECODE_TAIL; | |
589 | } | |
590 | ||
591 | ||
b37ad28b | 592 | static __be32 |
1da177e4 LT |
593 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
594 | { | |
595 | DECODE_HEAD; | |
596 | ||
597 | READ_BUF(12); | |
598 | READ64(commit->co_offset); | |
599 | READ32(commit->co_count); | |
600 | ||
601 | DECODE_TAIL; | |
602 | } | |
603 | ||
b37ad28b | 604 | static __be32 |
1da177e4 LT |
605 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
606 | { | |
607 | DECODE_HEAD; | |
608 | ||
609 | READ_BUF(4); | |
610 | READ32(create->cr_type); | |
611 | switch (create->cr_type) { | |
612 | case NF4LNK: | |
613 | READ_BUF(4); | |
614 | READ32(create->cr_linklen); | |
615 | READ_BUF(create->cr_linklen); | |
616 | SAVEMEM(create->cr_linkname, create->cr_linklen); | |
617 | break; | |
618 | case NF4BLK: | |
619 | case NF4CHR: | |
620 | READ_BUF(8); | |
621 | READ32(create->cr_specdata1); | |
622 | READ32(create->cr_specdata2); | |
623 | break; | |
624 | case NF4SOCK: | |
625 | case NF4FIFO: | |
626 | case NF4DIR: | |
627 | default: | |
628 | break; | |
629 | } | |
630 | ||
631 | READ_BUF(4); | |
632 | READ32(create->cr_namelen); | |
633 | READ_BUF(create->cr_namelen); | |
634 | SAVEMEM(create->cr_name, create->cr_namelen); | |
a36b1725 | 635 | if ((status = check_filename(create->cr_name, create->cr_namelen))) |
1da177e4 LT |
636 | return status; |
637 | ||
3c8e0316 | 638 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
18032ca0 | 639 | &create->cr_acl, &create->cr_label); |
c0d6fc8a | 640 | if (status) |
1da177e4 LT |
641 | goto out; |
642 | ||
643 | DECODE_TAIL; | |
644 | } | |
645 | ||
b37ad28b | 646 | static inline __be32 |
1da177e4 LT |
647 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
648 | { | |
e31a1b66 | 649 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
1da177e4 LT |
650 | } |
651 | ||
b37ad28b | 652 | static inline __be32 |
1da177e4 LT |
653 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
654 | { | |
655 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
656 | } | |
657 | ||
b37ad28b | 658 | static __be32 |
1da177e4 LT |
659 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
660 | { | |
661 | DECODE_HEAD; | |
662 | ||
663 | READ_BUF(4); | |
664 | READ32(link->li_namelen); | |
665 | READ_BUF(link->li_namelen); | |
666 | SAVEMEM(link->li_name, link->li_namelen); | |
a36b1725 | 667 | if ((status = check_filename(link->li_name, link->li_namelen))) |
1da177e4 LT |
668 | return status; |
669 | ||
670 | DECODE_TAIL; | |
671 | } | |
672 | ||
b37ad28b | 673 | static __be32 |
1da177e4 LT |
674 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
675 | { | |
676 | DECODE_HEAD; | |
677 | ||
1da177e4 LT |
678 | /* |
679 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
680 | */ | |
681 | READ_BUF(28); | |
682 | READ32(lock->lk_type); | |
683 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) | |
684 | goto xdr_error; | |
685 | READ32(lock->lk_reclaim); | |
686 | READ64(lock->lk_offset); | |
687 | READ64(lock->lk_length); | |
688 | READ32(lock->lk_is_new); | |
689 | ||
690 | if (lock->lk_is_new) { | |
e31a1b66 | 691 | READ_BUF(4); |
1da177e4 | 692 | READ32(lock->lk_new_open_seqid); |
e31a1b66 BH |
693 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
694 | if (status) | |
695 | return status; | |
696 | READ_BUF(8 + sizeof(clientid_t)); | |
1da177e4 LT |
697 | READ32(lock->lk_new_lock_seqid); |
698 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); | |
699 | READ32(lock->lk_new_owner.len); | |
700 | READ_BUF(lock->lk_new_owner.len); | |
701 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
702 | } else { | |
e31a1b66 BH |
703 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
704 | if (status) | |
705 | return status; | |
706 | READ_BUF(4); | |
1da177e4 LT |
707 | READ32(lock->lk_old_lock_seqid); |
708 | } | |
709 | ||
710 | DECODE_TAIL; | |
711 | } | |
712 | ||
b37ad28b | 713 | static __be32 |
1da177e4 LT |
714 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
715 | { | |
716 | DECODE_HEAD; | |
717 | ||
718 | READ_BUF(32); | |
719 | READ32(lockt->lt_type); | |
720 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) | |
721 | goto xdr_error; | |
722 | READ64(lockt->lt_offset); | |
723 | READ64(lockt->lt_length); | |
724 | COPYMEM(&lockt->lt_clientid, 8); | |
725 | READ32(lockt->lt_owner.len); | |
726 | READ_BUF(lockt->lt_owner.len); | |
727 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
728 | ||
729 | DECODE_TAIL; | |
730 | } | |
731 | ||
b37ad28b | 732 | static __be32 |
1da177e4 LT |
733 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
734 | { | |
735 | DECODE_HEAD; | |
736 | ||
e31a1b66 | 737 | READ_BUF(8); |
1da177e4 LT |
738 | READ32(locku->lu_type); |
739 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) | |
740 | goto xdr_error; | |
741 | READ32(locku->lu_seqid); | |
e31a1b66 BH |
742 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
743 | if (status) | |
744 | return status; | |
745 | READ_BUF(16); | |
1da177e4 LT |
746 | READ64(locku->lu_offset); |
747 | READ64(locku->lu_length); | |
748 | ||
749 | DECODE_TAIL; | |
750 | } | |
751 | ||
b37ad28b | 752 | static __be32 |
1da177e4 LT |
753 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
754 | { | |
755 | DECODE_HEAD; | |
756 | ||
757 | READ_BUF(4); | |
758 | READ32(lookup->lo_len); | |
759 | READ_BUF(lookup->lo_len); | |
760 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
a36b1725 | 761 | if ((status = check_filename(lookup->lo_name, lookup->lo_len))) |
1da177e4 LT |
762 | return status; |
763 | ||
764 | DECODE_TAIL; | |
765 | } | |
766 | ||
2c8bd7e0 | 767 | static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when) |
04f9e664 BF |
768 | { |
769 | __be32 *p; | |
770 | u32 w; | |
771 | ||
772 | READ_BUF(4); | |
773 | READ32(w); | |
2c8bd7e0 BH |
774 | *share_access = w & NFS4_SHARE_ACCESS_MASK; |
775 | *deleg_want = w & NFS4_SHARE_WANT_MASK; | |
776 | if (deleg_when) | |
777 | *deleg_when = w & NFS4_SHARE_WHEN_MASK; | |
778 | ||
04f9e664 BF |
779 | switch (w & NFS4_SHARE_ACCESS_MASK) { |
780 | case NFS4_SHARE_ACCESS_READ: | |
781 | case NFS4_SHARE_ACCESS_WRITE: | |
782 | case NFS4_SHARE_ACCESS_BOTH: | |
783 | break; | |
784 | default: | |
785 | return nfserr_bad_xdr; | |
786 | } | |
fc0d14fe | 787 | w &= ~NFS4_SHARE_ACCESS_MASK; |
04f9e664 BF |
788 | if (!w) |
789 | return nfs_ok; | |
790 | if (!argp->minorversion) | |
791 | return nfserr_bad_xdr; | |
792 | switch (w & NFS4_SHARE_WANT_MASK) { | |
793 | case NFS4_SHARE_WANT_NO_PREFERENCE: | |
794 | case NFS4_SHARE_WANT_READ_DELEG: | |
795 | case NFS4_SHARE_WANT_WRITE_DELEG: | |
796 | case NFS4_SHARE_WANT_ANY_DELEG: | |
797 | case NFS4_SHARE_WANT_NO_DELEG: | |
798 | case NFS4_SHARE_WANT_CANCEL: | |
799 | break; | |
800 | default: | |
801 | return nfserr_bad_xdr; | |
802 | } | |
92bac8c5 | 803 | w &= ~NFS4_SHARE_WANT_MASK; |
04f9e664 BF |
804 | if (!w) |
805 | return nfs_ok; | |
2c8bd7e0 BH |
806 | |
807 | if (!deleg_when) /* open_downgrade */ | |
808 | return nfserr_inval; | |
04f9e664 BF |
809 | switch (w) { |
810 | case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL: | |
811 | case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED: | |
c668fc6d BH |
812 | case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL | |
813 | NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED): | |
04f9e664 BF |
814 | return nfs_ok; |
815 | } | |
816 | xdr_error: | |
817 | return nfserr_bad_xdr; | |
818 | } | |
819 | ||
820 | static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x) | |
821 | { | |
822 | __be32 *p; | |
823 | ||
824 | READ_BUF(4); | |
825 | READ32(*x); | |
826 | /* Note: unlinke access bits, deny bits may be zero. */ | |
01cd4afa | 827 | if (*x & ~NFS4_SHARE_DENY_BOTH) |
04f9e664 BF |
828 | return nfserr_bad_xdr; |
829 | return nfs_ok; | |
830 | xdr_error: | |
831 | return nfserr_bad_xdr; | |
832 | } | |
833 | ||
a084daf5 BF |
834 | static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o) |
835 | { | |
836 | __be32 *p; | |
837 | ||
838 | READ_BUF(4); | |
839 | READ32(o->len); | |
840 | ||
841 | if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT) | |
842 | return nfserr_bad_xdr; | |
843 | ||
844 | READ_BUF(o->len); | |
845 | SAVEMEM(o->data, o->len); | |
846 | return nfs_ok; | |
847 | xdr_error: | |
848 | return nfserr_bad_xdr; | |
849 | } | |
850 | ||
b37ad28b | 851 | static __be32 |
1da177e4 LT |
852 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
853 | { | |
854 | DECODE_HEAD; | |
2c8bd7e0 | 855 | u32 dummy; |
1da177e4 LT |
856 | |
857 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
858 | open->op_iattr.ia_valid = 0; | |
fe0750e5 | 859 | open->op_openowner = NULL; |
1da177e4 | 860 | |
9d313b17 | 861 | open->op_xdr_error = 0; |
1da177e4 | 862 | /* seqid, share_access, share_deny, clientid, ownerlen */ |
04f9e664 | 863 | READ_BUF(4); |
1da177e4 | 864 | READ32(open->op_seqid); |
2c8bd7e0 BH |
865 | /* decode, yet ignore deleg_when until supported */ |
866 | status = nfsd4_decode_share_access(argp, &open->op_share_access, | |
867 | &open->op_deleg_want, &dummy); | |
04f9e664 BF |
868 | if (status) |
869 | goto xdr_error; | |
870 | status = nfsd4_decode_share_deny(argp, &open->op_share_deny); | |
871 | if (status) | |
872 | goto xdr_error; | |
a084daf5 | 873 | READ_BUF(sizeof(clientid_t)); |
1da177e4 | 874 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); |
a084daf5 BF |
875 | status = nfsd4_decode_opaque(argp, &open->op_owner); |
876 | if (status) | |
877 | goto xdr_error; | |
878 | READ_BUF(4); | |
1da177e4 LT |
879 | READ32(open->op_create); |
880 | switch (open->op_create) { | |
881 | case NFS4_OPEN_NOCREATE: | |
882 | break; | |
883 | case NFS4_OPEN_CREATE: | |
884 | READ_BUF(4); | |
885 | READ32(open->op_createmode); | |
886 | switch (open->op_createmode) { | |
887 | case NFS4_CREATE_UNCHECKED: | |
888 | case NFS4_CREATE_GUARDED: | |
c0d6fc8a | 889 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
18032ca0 | 890 | &open->op_iattr, &open->op_acl, &open->op_label); |
c0d6fc8a | 891 | if (status) |
1da177e4 LT |
892 | goto out; |
893 | break; | |
894 | case NFS4_CREATE_EXCLUSIVE: | |
ab4684d1 CL |
895 | READ_BUF(NFS4_VERIFIER_SIZE); |
896 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 897 | break; |
79fb54ab BH |
898 | case NFS4_CREATE_EXCLUSIVE4_1: |
899 | if (argp->minorversion < 1) | |
900 | goto xdr_error; | |
ab4684d1 CL |
901 | READ_BUF(NFS4_VERIFIER_SIZE); |
902 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
79fb54ab | 903 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
18032ca0 | 904 | &open->op_iattr, &open->op_acl, &open->op_label); |
79fb54ab BH |
905 | if (status) |
906 | goto out; | |
907 | break; | |
1da177e4 LT |
908 | default: |
909 | goto xdr_error; | |
910 | } | |
911 | break; | |
912 | default: | |
913 | goto xdr_error; | |
914 | } | |
915 | ||
916 | /* open_claim */ | |
917 | READ_BUF(4); | |
918 | READ32(open->op_claim_type); | |
919 | switch (open->op_claim_type) { | |
920 | case NFS4_OPEN_CLAIM_NULL: | |
921 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
922 | READ_BUF(4); | |
923 | READ32(open->op_fname.len); | |
924 | READ_BUF(open->op_fname.len); | |
925 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 926 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
927 | return status; |
928 | break; | |
929 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
930 | READ_BUF(4); | |
931 | READ32(open->op_delegate_type); | |
932 | break; | |
933 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
e31a1b66 BH |
934 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
935 | if (status) | |
936 | return status; | |
937 | READ_BUF(4); | |
1da177e4 LT |
938 | READ32(open->op_fname.len); |
939 | READ_BUF(open->op_fname.len); | |
940 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 941 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
942 | return status; |
943 | break; | |
8b289b2c BF |
944 | case NFS4_OPEN_CLAIM_FH: |
945 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
946 | if (argp->minorversion < 1) | |
947 | goto xdr_error; | |
948 | /* void */ | |
949 | break; | |
950 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
951 | if (argp->minorversion < 1) | |
952 | goto xdr_error; | |
953 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); | |
954 | if (status) | |
955 | return status; | |
956 | break; | |
1da177e4 LT |
957 | default: |
958 | goto xdr_error; | |
959 | } | |
960 | ||
961 | DECODE_TAIL; | |
962 | } | |
963 | ||
b37ad28b | 964 | static __be32 |
1da177e4 LT |
965 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
966 | { | |
967 | DECODE_HEAD; | |
e1a90ebd AS |
968 | |
969 | if (argp->minorversion >= 1) | |
970 | return nfserr_notsupp; | |
971 | ||
e31a1b66 BH |
972 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
973 | if (status) | |
974 | return status; | |
975 | READ_BUF(4); | |
1da177e4 | 976 | READ32(open_conf->oc_seqid); |
e1a90ebd | 977 | |
1da177e4 LT |
978 | DECODE_TAIL; |
979 | } | |
980 | ||
b37ad28b | 981 | static __be32 |
1da177e4 LT |
982 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
983 | { | |
984 | DECODE_HEAD; | |
985 | ||
e31a1b66 BH |
986 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
987 | if (status) | |
988 | return status; | |
04f9e664 | 989 | READ_BUF(4); |
1da177e4 | 990 | READ32(open_down->od_seqid); |
2c8bd7e0 BH |
991 | status = nfsd4_decode_share_access(argp, &open_down->od_share_access, |
992 | &open_down->od_deleg_want, NULL); | |
04f9e664 BF |
993 | if (status) |
994 | return status; | |
995 | status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny); | |
996 | if (status) | |
997 | return status; | |
1da177e4 LT |
998 | DECODE_TAIL; |
999 | } | |
1000 | ||
b37ad28b | 1001 | static __be32 |
1da177e4 LT |
1002 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
1003 | { | |
1004 | DECODE_HEAD; | |
1005 | ||
1006 | READ_BUF(4); | |
1007 | READ32(putfh->pf_fhlen); | |
1008 | if (putfh->pf_fhlen > NFS4_FHSIZE) | |
1009 | goto xdr_error; | |
1010 | READ_BUF(putfh->pf_fhlen); | |
1011 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
1012 | ||
1013 | DECODE_TAIL; | |
1014 | } | |
1015 | ||
e1a90ebd AS |
1016 | static __be32 |
1017 | nfsd4_decode_putpubfh(struct nfsd4_compoundargs *argp, void *p) | |
1018 | { | |
1019 | if (argp->minorversion == 0) | |
1020 | return nfs_ok; | |
1021 | return nfserr_notsupp; | |
1022 | } | |
1023 | ||
b37ad28b | 1024 | static __be32 |
1da177e4 LT |
1025 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
1026 | { | |
1027 | DECODE_HEAD; | |
1028 | ||
e31a1b66 BH |
1029 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
1030 | if (status) | |
1031 | return status; | |
1032 | READ_BUF(12); | |
1da177e4 LT |
1033 | READ64(read->rd_offset); |
1034 | READ32(read->rd_length); | |
1035 | ||
1036 | DECODE_TAIL; | |
1037 | } | |
1038 | ||
b37ad28b | 1039 | static __be32 |
1da177e4 LT |
1040 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
1041 | { | |
1042 | DECODE_HEAD; | |
1043 | ||
1044 | READ_BUF(24); | |
1045 | READ64(readdir->rd_cookie); | |
1046 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); | |
1047 | READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ | |
1048 | READ32(readdir->rd_maxcount); | |
1049 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) | |
1050 | goto out; | |
1051 | ||
1052 | DECODE_TAIL; | |
1053 | } | |
1054 | ||
b37ad28b | 1055 | static __be32 |
1da177e4 LT |
1056 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
1057 | { | |
1058 | DECODE_HEAD; | |
1059 | ||
1060 | READ_BUF(4); | |
1061 | READ32(remove->rm_namelen); | |
1062 | READ_BUF(remove->rm_namelen); | |
1063 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
a36b1725 | 1064 | if ((status = check_filename(remove->rm_name, remove->rm_namelen))) |
1da177e4 LT |
1065 | return status; |
1066 | ||
1067 | DECODE_TAIL; | |
1068 | } | |
1069 | ||
b37ad28b | 1070 | static __be32 |
1da177e4 LT |
1071 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
1072 | { | |
1073 | DECODE_HEAD; | |
1074 | ||
1075 | READ_BUF(4); | |
1076 | READ32(rename->rn_snamelen); | |
1077 | READ_BUF(rename->rn_snamelen + 4); | |
1078 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); | |
1079 | READ32(rename->rn_tnamelen); | |
1080 | READ_BUF(rename->rn_tnamelen); | |
1081 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
a36b1725 | 1082 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen))) |
1da177e4 | 1083 | return status; |
a36b1725 | 1084 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen))) |
1da177e4 LT |
1085 | return status; |
1086 | ||
1087 | DECODE_TAIL; | |
1088 | } | |
1089 | ||
b37ad28b | 1090 | static __be32 |
1da177e4 LT |
1091 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
1092 | { | |
1093 | DECODE_HEAD; | |
1094 | ||
e1a90ebd AS |
1095 | if (argp->minorversion >= 1) |
1096 | return nfserr_notsupp; | |
1097 | ||
1da177e4 LT |
1098 | READ_BUF(sizeof(clientid_t)); |
1099 | COPYMEM(clientid, sizeof(clientid_t)); | |
1100 | ||
1101 | DECODE_TAIL; | |
1102 | } | |
1103 | ||
dcb488a3 AA |
1104 | static __be32 |
1105 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
1106 | struct nfsd4_secinfo *secinfo) | |
1107 | { | |
1108 | DECODE_HEAD; | |
1109 | ||
1110 | READ_BUF(4); | |
1111 | READ32(secinfo->si_namelen); | |
1112 | READ_BUF(secinfo->si_namelen); | |
1113 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
a36b1725 | 1114 | status = check_filename(secinfo->si_name, secinfo->si_namelen); |
dcb488a3 AA |
1115 | if (status) |
1116 | return status; | |
1117 | DECODE_TAIL; | |
1118 | } | |
1119 | ||
04f4ad16 BF |
1120 | static __be32 |
1121 | nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, | |
1122 | struct nfsd4_secinfo_no_name *sin) | |
1123 | { | |
1124 | DECODE_HEAD; | |
1125 | ||
1126 | READ_BUF(4); | |
1127 | READ32(sin->sin_style); | |
1128 | DECODE_TAIL; | |
1129 | } | |
1130 | ||
b37ad28b | 1131 | static __be32 |
1da177e4 LT |
1132 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
1133 | { | |
e31a1b66 | 1134 | __be32 status; |
1da177e4 | 1135 | |
e31a1b66 BH |
1136 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
1137 | if (status) | |
1138 | return status; | |
3c8e0316 | 1139 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
18032ca0 | 1140 | &setattr->sa_acl, &setattr->sa_label); |
1da177e4 LT |
1141 | } |
1142 | ||
b37ad28b | 1143 | static __be32 |
1da177e4 LT |
1144 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
1145 | { | |
1146 | DECODE_HEAD; | |
1147 | ||
e1a90ebd AS |
1148 | if (argp->minorversion >= 1) |
1149 | return nfserr_notsupp; | |
1150 | ||
ab4684d1 CL |
1151 | READ_BUF(NFS4_VERIFIER_SIZE); |
1152 | COPYMEM(setclientid->se_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 1153 | |
a084daf5 BF |
1154 | status = nfsd4_decode_opaque(argp, &setclientid->se_name); |
1155 | if (status) | |
1156 | return nfserr_bad_xdr; | |
1157 | READ_BUF(8); | |
1da177e4 LT |
1158 | READ32(setclientid->se_callback_prog); |
1159 | READ32(setclientid->se_callback_netid_len); | |
1160 | ||
1161 | READ_BUF(setclientid->se_callback_netid_len + 4); | |
1162 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); | |
1163 | READ32(setclientid->se_callback_addr_len); | |
1164 | ||
1165 | READ_BUF(setclientid->se_callback_addr_len + 4); | |
1166 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); | |
1167 | READ32(setclientid->se_callback_ident); | |
1168 | ||
1169 | DECODE_TAIL; | |
1170 | } | |
1171 | ||
b37ad28b | 1172 | static __be32 |
1da177e4 LT |
1173 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
1174 | { | |
1175 | DECODE_HEAD; | |
1176 | ||
e1a90ebd AS |
1177 | if (argp->minorversion >= 1) |
1178 | return nfserr_notsupp; | |
1179 | ||
ab4684d1 | 1180 | READ_BUF(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 1181 | COPYMEM(&scd_c->sc_clientid, 8); |
ab4684d1 | 1182 | COPYMEM(&scd_c->sc_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
1183 | |
1184 | DECODE_TAIL; | |
1185 | } | |
1186 | ||
1187 | /* Also used for NVERIFY */ | |
b37ad28b | 1188 | static __be32 |
1da177e4 LT |
1189 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
1190 | { | |
1da177e4 LT |
1191 | DECODE_HEAD; |
1192 | ||
1193 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
1194 | goto out; | |
1195 | ||
1196 | /* For convenience's sake, we compare raw xdr'd attributes in | |
e5f95703 BF |
1197 | * nfsd4_proc_verify */ |
1198 | ||
1da177e4 LT |
1199 | READ_BUF(4); |
1200 | READ32(verify->ve_attrlen); | |
1201 | READ_BUF(verify->ve_attrlen); | |
1202 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
1203 | ||
1204 | DECODE_TAIL; | |
1205 | } | |
1206 | ||
b37ad28b | 1207 | static __be32 |
1da177e4 LT |
1208 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
1209 | { | |
1210 | int avail; | |
1da177e4 LT |
1211 | int len; |
1212 | DECODE_HEAD; | |
1213 | ||
e31a1b66 BH |
1214 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
1215 | if (status) | |
1216 | return status; | |
1217 | READ_BUF(16); | |
1da177e4 LT |
1218 | READ64(write->wr_offset); |
1219 | READ32(write->wr_stable_how); | |
1220 | if (write->wr_stable_how > 2) | |
1221 | goto xdr_error; | |
1222 | READ32(write->wr_buflen); | |
1223 | ||
1224 | /* Sorry .. no magic macros for this.. * | |
1225 | * READ_BUF(write->wr_buflen); | |
1226 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
1227 | */ | |
1228 | avail = (char*)argp->end - (char*)argp->p; | |
1229 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
1230 | dprintk("NFSD: xdr error (%s:%d)\n", |
1231 | __FILE__, __LINE__); | |
1da177e4 LT |
1232 | goto xdr_error; |
1233 | } | |
70cc7f75 BF |
1234 | write->wr_head.iov_base = p; |
1235 | write->wr_head.iov_len = avail; | |
5a80a54d | 1236 | WARN_ON(avail != (XDR_QUADLEN(avail) << 2)); |
70cc7f75 | 1237 | write->wr_pagelist = argp->pagelist; |
5a80a54d BF |
1238 | |
1239 | len = XDR_QUADLEN(write->wr_buflen) << 2; | |
1240 | if (len >= avail) { | |
1241 | int pages; | |
1242 | ||
1243 | len -= avail; | |
1244 | ||
1245 | pages = len >> PAGE_SHIFT; | |
1246 | argp->pagelist += pages; | |
1247 | argp->pagelen -= pages * PAGE_SIZE; | |
1248 | len -= pages * PAGE_SIZE; | |
1249 | ||
1250 | argp->p = (__be32 *)page_address(argp->pagelist[0]); | |
365da4ad | 1251 | argp->pagelist++; |
5a80a54d | 1252 | argp->end = argp->p + XDR_QUADLEN(PAGE_SIZE); |
1da177e4 | 1253 | } |
5a80a54d | 1254 | argp->p += XDR_QUADLEN(len); |
1da177e4 LT |
1255 | |
1256 | DECODE_TAIL; | |
1257 | } | |
1258 | ||
b37ad28b | 1259 | static __be32 |
1da177e4 LT |
1260 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
1261 | { | |
1262 | DECODE_HEAD; | |
1263 | ||
e1a90ebd AS |
1264 | if (argp->minorversion >= 1) |
1265 | return nfserr_notsupp; | |
1266 | ||
1da177e4 LT |
1267 | READ_BUF(12); |
1268 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
1269 | READ32(rlockowner->rl_owner.len); | |
1270 | READ_BUF(rlockowner->rl_owner.len); | |
1271 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
1272 | ||
60adfc50 AA |
1273 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1274 | return nfserr_inval; | |
1da177e4 LT |
1275 | DECODE_TAIL; |
1276 | } | |
1277 | ||
2db134eb AA |
1278 | static __be32 |
1279 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1280 | struct nfsd4_exchange_id *exid) |
2db134eb | 1281 | { |
5afa040b | 1282 | int dummy, tmp; |
0733d213 AA |
1283 | DECODE_HEAD; |
1284 | ||
1285 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1286 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1287 | ||
a084daf5 BF |
1288 | status = nfsd4_decode_opaque(argp, &exid->clname); |
1289 | if (status) | |
1290 | return nfserr_bad_xdr; | |
0733d213 AA |
1291 | |
1292 | READ_BUF(4); | |
1293 | READ32(exid->flags); | |
1294 | ||
1295 | /* Ignore state_protect4_a */ | |
1296 | READ_BUF(4); | |
1297 | READ32(exid->spa_how); | |
1298 | switch (exid->spa_how) { | |
1299 | case SP4_NONE: | |
1300 | break; | |
1301 | case SP4_MACH_CRED: | |
1302 | /* spo_must_enforce */ | |
1303 | READ_BUF(4); | |
1304 | READ32(dummy); | |
1305 | READ_BUF(dummy * 4); | |
1306 | p += dummy; | |
1307 | ||
1308 | /* spo_must_allow */ | |
1309 | READ_BUF(4); | |
1310 | READ32(dummy); | |
1311 | READ_BUF(dummy * 4); | |
1312 | p += dummy; | |
1313 | break; | |
1314 | case SP4_SSV: | |
1315 | /* ssp_ops */ | |
1316 | READ_BUF(4); | |
1317 | READ32(dummy); | |
1318 | READ_BUF(dummy * 4); | |
1319 | p += dummy; | |
1320 | ||
1321 | READ_BUF(4); | |
1322 | READ32(dummy); | |
1323 | READ_BUF(dummy * 4); | |
1324 | p += dummy; | |
1325 | ||
1326 | /* ssp_hash_algs<> */ | |
1327 | READ_BUF(4); | |
5afa040b MJ |
1328 | READ32(tmp); |
1329 | while (tmp--) { | |
1330 | READ_BUF(4); | |
1331 | READ32(dummy); | |
1332 | READ_BUF(dummy); | |
1333 | p += XDR_QUADLEN(dummy); | |
1334 | } | |
0733d213 AA |
1335 | |
1336 | /* ssp_encr_algs<> */ | |
1337 | READ_BUF(4); | |
5afa040b MJ |
1338 | READ32(tmp); |
1339 | while (tmp--) { | |
1340 | READ_BUF(4); | |
1341 | READ32(dummy); | |
1342 | READ_BUF(dummy); | |
1343 | p += XDR_QUADLEN(dummy); | |
1344 | } | |
0733d213 AA |
1345 | |
1346 | /* ssp_window and ssp_num_gss_handles */ | |
1347 | READ_BUF(8); | |
1348 | READ32(dummy); | |
1349 | READ32(dummy); | |
1350 | break; | |
1351 | default: | |
1352 | goto xdr_error; | |
1353 | } | |
1354 | ||
1355 | /* Ignore Implementation ID */ | |
1356 | READ_BUF(4); /* nfs_impl_id4 array length */ | |
1357 | READ32(dummy); | |
1358 | ||
1359 | if (dummy > 1) | |
1360 | goto xdr_error; | |
1361 | ||
1362 | if (dummy == 1) { | |
1363 | /* nii_domain */ | |
1364 | READ_BUF(4); | |
1365 | READ32(dummy); | |
1366 | READ_BUF(dummy); | |
1367 | p += XDR_QUADLEN(dummy); | |
1368 | ||
1369 | /* nii_name */ | |
1370 | READ_BUF(4); | |
1371 | READ32(dummy); | |
1372 | READ_BUF(dummy); | |
1373 | p += XDR_QUADLEN(dummy); | |
1374 | ||
1375 | /* nii_date */ | |
1376 | READ_BUF(12); | |
1377 | p += 3; | |
1378 | } | |
1379 | DECODE_TAIL; | |
2db134eb AA |
1380 | } |
1381 | ||
1382 | static __be32 | |
1383 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1384 | struct nfsd4_create_session *sess) | |
1385 | { | |
ec6b5d7b | 1386 | DECODE_HEAD; |
ec6b5d7b | 1387 | u32 dummy; |
ec6b5d7b AA |
1388 | |
1389 | READ_BUF(16); | |
1390 | COPYMEM(&sess->clientid, 8); | |
1391 | READ32(sess->seqid); | |
1392 | READ32(sess->flags); | |
1393 | ||
1394 | /* Fore channel attrs */ | |
1395 | READ_BUF(28); | |
1396 | READ32(dummy); /* headerpadsz is always 0 */ | |
1397 | READ32(sess->fore_channel.maxreq_sz); | |
1398 | READ32(sess->fore_channel.maxresp_sz); | |
1399 | READ32(sess->fore_channel.maxresp_cached); | |
1400 | READ32(sess->fore_channel.maxops); | |
1401 | READ32(sess->fore_channel.maxreqs); | |
1402 | READ32(sess->fore_channel.nr_rdma_attrs); | |
1403 | if (sess->fore_channel.nr_rdma_attrs == 1) { | |
1404 | READ_BUF(4); | |
1405 | READ32(sess->fore_channel.rdma_attrs); | |
1406 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { | |
1407 | dprintk("Too many fore channel attr bitmaps!\n"); | |
1408 | goto xdr_error; | |
1409 | } | |
1410 | ||
1411 | /* Back channel attrs */ | |
1412 | READ_BUF(28); | |
1413 | READ32(dummy); /* headerpadsz is always 0 */ | |
1414 | READ32(sess->back_channel.maxreq_sz); | |
1415 | READ32(sess->back_channel.maxresp_sz); | |
1416 | READ32(sess->back_channel.maxresp_cached); | |
1417 | READ32(sess->back_channel.maxops); | |
1418 | READ32(sess->back_channel.maxreqs); | |
1419 | READ32(sess->back_channel.nr_rdma_attrs); | |
1420 | if (sess->back_channel.nr_rdma_attrs == 1) { | |
1421 | READ_BUF(4); | |
1422 | READ32(sess->back_channel.rdma_attrs); | |
1423 | } else if (sess->back_channel.nr_rdma_attrs > 1) { | |
1424 | dprintk("Too many back channel attr bitmaps!\n"); | |
1425 | goto xdr_error; | |
1426 | } | |
1427 | ||
acb2887e | 1428 | READ_BUF(4); |
ec6b5d7b | 1429 | READ32(sess->callback_prog); |
acb2887e | 1430 | nfsd4_decode_cb_sec(argp, &sess->cb_sec); |
ec6b5d7b | 1431 | DECODE_TAIL; |
2db134eb AA |
1432 | } |
1433 | ||
1434 | static __be32 | |
1435 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, | |
1436 | struct nfsd4_destroy_session *destroy_session) | |
1437 | { | |
e10e0cfc BH |
1438 | DECODE_HEAD; |
1439 | READ_BUF(NFS4_MAX_SESSIONID_LEN); | |
1440 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1441 | ||
1442 | DECODE_TAIL; | |
2db134eb AA |
1443 | } |
1444 | ||
e1ca12df BS |
1445 | static __be32 |
1446 | nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp, | |
1447 | struct nfsd4_free_stateid *free_stateid) | |
1448 | { | |
1449 | DECODE_HEAD; | |
1450 | ||
1451 | READ_BUF(sizeof(stateid_t)); | |
1452 | READ32(free_stateid->fr_stateid.si_generation); | |
1453 | COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
1454 | ||
1455 | DECODE_TAIL; | |
1456 | } | |
1457 | ||
2db134eb AA |
1458 | static __be32 |
1459 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, | |
1460 | struct nfsd4_sequence *seq) | |
1461 | { | |
b85d4c01 BH |
1462 | DECODE_HEAD; |
1463 | ||
1464 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); | |
1465 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1466 | READ32(seq->seqid); | |
1467 | READ32(seq->slotid); | |
1468 | READ32(seq->maxslots); | |
1469 | READ32(seq->cachethis); | |
1470 | ||
1471 | DECODE_TAIL; | |
2db134eb AA |
1472 | } |
1473 | ||
17456804 BS |
1474 | static __be32 |
1475 | nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid) | |
1476 | { | |
17456804 | 1477 | int i; |
03cfb420 BS |
1478 | __be32 *p, status; |
1479 | struct nfsd4_test_stateid_id *stateid; | |
17456804 BS |
1480 | |
1481 | READ_BUF(4); | |
1482 | test_stateid->ts_num_ids = ntohl(*p++); | |
1483 | ||
03cfb420 | 1484 | INIT_LIST_HEAD(&test_stateid->ts_stateid_list); |
17456804 BS |
1485 | |
1486 | for (i = 0; i < test_stateid->ts_num_ids; i++) { | |
03cfb420 BS |
1487 | stateid = kmalloc(sizeof(struct nfsd4_test_stateid_id), GFP_KERNEL); |
1488 | if (!stateid) { | |
afcf6792 | 1489 | status = nfserrno(-ENOMEM); |
03cfb420 BS |
1490 | goto out; |
1491 | } | |
1492 | ||
1493 | defer_free(argp, kfree, stateid); | |
1494 | INIT_LIST_HEAD(&stateid->ts_id_list); | |
1495 | list_add_tail(&stateid->ts_id_list, &test_stateid->ts_stateid_list); | |
1496 | ||
1497 | status = nfsd4_decode_stateid(argp, &stateid->ts_id_stateid); | |
17456804 | 1498 | if (status) |
03cfb420 | 1499 | goto out; |
17456804 BS |
1500 | } |
1501 | ||
1502 | status = 0; | |
1503 | out: | |
1504 | return status; | |
1505 | xdr_error: | |
1506 | dprintk("NFSD: xdr error (%s:%d)\n", __FILE__, __LINE__); | |
1507 | status = nfserr_bad_xdr; | |
1508 | goto out; | |
1509 | } | |
1510 | ||
345c2842 MJ |
1511 | static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_clientid *dc) |
1512 | { | |
1513 | DECODE_HEAD; | |
1514 | ||
1515 | READ_BUF(8); | |
1516 | COPYMEM(&dc->clientid, 8); | |
1517 | ||
1518 | DECODE_TAIL; | |
1519 | } | |
1520 | ||
4dc6ec00 BF |
1521 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) |
1522 | { | |
1523 | DECODE_HEAD; | |
1524 | ||
1525 | READ_BUF(4); | |
1526 | READ32(rc->rca_one_fs); | |
1527 | ||
1528 | DECODE_TAIL; | |
1529 | } | |
1530 | ||
347e0ad9 BH |
1531 | static __be32 |
1532 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1533 | { | |
1534 | return nfs_ok; | |
1535 | } | |
1536 | ||
3c375c6f BH |
1537 | static __be32 |
1538 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1539 | { | |
1e685ec2 | 1540 | return nfserr_notsupp; |
3c375c6f BH |
1541 | } |
1542 | ||
347e0ad9 BH |
1543 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1544 | ||
1545 | static nfsd4_dec nfsd4_dec_ops[] = { | |
ad1060c8 BF |
1546 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1547 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1548 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1549 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1550 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1551 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1552 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1553 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1554 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1555 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1556 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1557 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1558 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1559 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1560 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1561 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1562 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1563 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1564 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1565 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
e1a90ebd | 1566 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_putpubfh, |
ad1060c8 BF |
1567 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1568 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1569 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1570 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1571 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1572 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1573 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1574 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1575 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1576 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1577 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1578 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1579 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1580 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1581 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1582 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
2db134eb AA |
1583 | |
1584 | /* new operations for NFSv4.1 */ | |
cb73a9f4 | 1585 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_backchannel_ctl, |
1d1bc8f2 | 1586 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
9064caae RD |
1587 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
1588 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
1589 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
e1ca12df | 1590 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, |
9064caae RD |
1591 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
1592 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1593 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1594 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1595 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1596 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
04f4ad16 | 1597 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
9064caae RD |
1598 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
1599 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
17456804 | 1600 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid, |
9064caae | 1601 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
345c2842 | 1602 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, |
4dc6ec00 | 1603 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
2db134eb AA |
1604 | }; |
1605 | ||
e1a90ebd AS |
1606 | static inline bool |
1607 | nfsd4_opnum_in_range(struct nfsd4_compoundargs *argp, struct nfsd4_op *op) | |
1608 | { | |
8217d146 | 1609 | if (op->opnum < FIRST_NFS4_OP) |
e1a90ebd | 1610 | return false; |
8217d146 | 1611 | else if (argp->minorversion == 0 && op->opnum > LAST_NFS40_OP) |
e1a90ebd | 1612 | return false; |
8217d146 AS |
1613 | else if (argp->minorversion == 1 && op->opnum > LAST_NFS41_OP) |
1614 | return false; | |
1615 | else if (argp->minorversion == 2 && op->opnum > LAST_NFS42_OP) | |
e1a90ebd AS |
1616 | return false; |
1617 | return true; | |
1618 | } | |
f2feb96b | 1619 | |
6ff40dec BF |
1620 | /* |
1621 | * Return a rough estimate of the maximum possible reply size. Note the | |
1622 | * estimate includes rpc headers so is meant to be passed to | |
1623 | * svc_reserve, not svc_reserve_auth. | |
1624 | * | |
1625 | * Also note the current compound encoding permits only one operation to | |
1626 | * use pages beyond the first one, so the maximum possible length is the | |
1627 | * maximum over these values, not the sum. | |
1628 | */ | |
1629 | static int nfsd4_max_reply(u32 opnum) | |
1630 | { | |
1631 | switch (opnum) { | |
1632 | case OP_READLINK: | |
1633 | case OP_READDIR: | |
1634 | /* | |
1635 | * Both of these ops take a single page for data and put | |
1636 | * the head and tail in another page: | |
1637 | */ | |
1638 | return 2 * PAGE_SIZE; | |
1639 | case OP_READ: | |
1640 | return INT_MAX; | |
1641 | default: | |
1642 | return PAGE_SIZE; | |
1643 | } | |
1644 | } | |
1645 | ||
b37ad28b | 1646 | static __be32 |
1da177e4 LT |
1647 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1648 | { | |
1649 | DECODE_HEAD; | |
1650 | struct nfsd4_op *op; | |
1091006c | 1651 | bool cachethis = false; |
6ff40dec | 1652 | int max_reply = PAGE_SIZE; |
1da177e4 LT |
1653 | int i; |
1654 | ||
1da177e4 LT |
1655 | READ_BUF(4); |
1656 | READ32(argp->taglen); | |
1657 | READ_BUF(argp->taglen + 8); | |
1658 | SAVEMEM(argp->tag, argp->taglen); | |
1659 | READ32(argp->minorversion); | |
1660 | READ32(argp->opcnt); | |
1661 | ||
1662 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1663 | goto xdr_error; | |
1664 | if (argp->opcnt > 100) | |
1665 | goto xdr_error; | |
1666 | ||
e8c96f8c | 1667 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
1da177e4 LT |
1668 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1669 | if (!argp->ops) { | |
1670 | argp->ops = argp->iops; | |
817cb9d4 | 1671 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1672 | goto xdr_error; |
1673 | } | |
1674 | } | |
1675 | ||
e1a90ebd | 1676 | if (argp->minorversion > NFSD_SUPPORTED_MINOR_VERSION) |
30cff1ff BH |
1677 | argp->opcnt = 0; |
1678 | ||
1da177e4 LT |
1679 | for (i = 0; i < argp->opcnt; i++) { |
1680 | op = &argp->ops[i]; | |
1681 | op->replay = NULL; | |
1682 | ||
8a61b18c BF |
1683 | READ_BUF(4); |
1684 | READ32(op->opnum); | |
1da177e4 | 1685 | |
e1a90ebd AS |
1686 | if (nfsd4_opnum_in_range(argp, op)) |
1687 | op->status = nfsd4_dec_ops[op->opnum](argp, &op->u); | |
347e0ad9 | 1688 | else { |
1da177e4 LT |
1689 | op->opnum = OP_ILLEGAL; |
1690 | op->status = nfserr_op_illegal; | |
1da177e4 LT |
1691 | } |
1692 | ||
1693 | if (op->status) { | |
1694 | argp->opcnt = i+1; | |
1695 | break; | |
1696 | } | |
1091006c BF |
1697 | /* |
1698 | * We'll try to cache the result in the DRC if any one | |
1699 | * op in the compound wants to be cached: | |
1700 | */ | |
1701 | cachethis |= nfsd4_cache_this_op(op); | |
6ff40dec BF |
1702 | |
1703 | max_reply = max(max_reply, nfsd4_max_reply(op->opnum)); | |
1da177e4 | 1704 | } |
1091006c BF |
1705 | /* Sessions make the DRC unnecessary: */ |
1706 | if (argp->minorversion) | |
1707 | cachethis = false; | |
6ff40dec BF |
1708 | if (max_reply != INT_MAX) |
1709 | svc_reserve(argp->rqstp, max_reply); | |
1091006c | 1710 | argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; |
1da177e4 LT |
1711 | |
1712 | DECODE_TAIL; | |
1713 | } | |
1da177e4 | 1714 | |
1da177e4 LT |
1715 | #define WRITE32(n) *p++ = htonl(n) |
1716 | #define WRITE64(n) do { \ | |
1717 | *p++ = htonl((u32)((n) >> 32)); \ | |
1718 | *p++ = htonl((u32)(n)); \ | |
1719 | } while (0) | |
5108b276 | 1720 | #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \ |
1da177e4 LT |
1721 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ |
1722 | memcpy(p, ptr, nbytes); \ | |
1723 | p += XDR_QUADLEN(nbytes); \ | |
5108b276 | 1724 | }} while (0) |
c654b8a9 BF |
1725 | |
1726 | static void write32(__be32 **p, u32 n) | |
1727 | { | |
45eaa1c1 | 1728 | *(*p)++ = htonl(n); |
c654b8a9 BF |
1729 | } |
1730 | ||
1731 | static void write64(__be32 **p, u64 n) | |
1732 | { | |
45eaa1c1 | 1733 | write32(p, (n >> 32)); |
c654b8a9 BF |
1734 | write32(p, (u32)n); |
1735 | } | |
1736 | ||
1737 | static void write_change(__be32 **p, struct kstat *stat, struct inode *inode) | |
1738 | { | |
1739 | if (IS_I_VERSION(inode)) { | |
1740 | write64(p, inode->i_version); | |
1741 | } else { | |
1742 | write32(p, stat->ctime.tv_sec); | |
1743 | write32(p, stat->ctime.tv_nsec); | |
1744 | } | |
1745 | } | |
1746 | ||
1747 | static void write_cinfo(__be32 **p, struct nfsd4_change_info *c) | |
1748 | { | |
1749 | write32(p, c->atomic); | |
1750 | if (c->change_supported) { | |
1751 | write64(p, c->before_change); | |
1752 | write64(p, c->after_change); | |
1753 | } else { | |
1754 | write32(p, c->before_ctime_sec); | |
1755 | write32(p, c->before_ctime_nsec); | |
1756 | write32(p, c->after_ctime_sec); | |
1757 | write32(p, c->after_ctime_nsec); | |
1758 | } | |
1759 | } | |
1da177e4 LT |
1760 | |
1761 | #define RESERVE_SPACE(nbytes) do { \ | |
1762 | p = resp->p; \ | |
1763 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ | |
1764 | } while (0) | |
1765 | #define ADJUST_ARGS() resp->p = p | |
1766 | ||
81c3f413 | 1767 | /* Encode as an array of strings the string given with components |
e7a0444a | 1768 | * separated @sep, escaped with esc_enter and esc_exit. |
81c3f413 | 1769 | */ |
e7a0444a WAA |
1770 | static __be32 nfsd4_encode_components_esc(char sep, char *components, |
1771 | __be32 **pp, int *buflen, | |
1772 | char esc_enter, char esc_exit) | |
81c3f413 | 1773 | { |
2ebbc012 AV |
1774 | __be32 *p = *pp; |
1775 | __be32 *countp = p; | |
81c3f413 | 1776 | int strlen, count=0; |
e7a0444a | 1777 | char *str, *end, *next; |
81c3f413 BF |
1778 | |
1779 | dprintk("nfsd4_encode_components(%s)\n", components); | |
1780 | if ((*buflen -= 4) < 0) | |
1781 | return nfserr_resource; | |
1782 | WRITE32(0); /* We will fill this in with @count later */ | |
1783 | end = str = components; | |
1784 | while (*end) { | |
e7a0444a WAA |
1785 | bool found_esc = false; |
1786 | ||
1787 | /* try to parse as esc_start, ..., esc_end, sep */ | |
1788 | if (*str == esc_enter) { | |
1789 | for (; *end && (*end != esc_exit); end++) | |
1790 | /* find esc_exit or end of string */; | |
1791 | next = end + 1; | |
1792 | if (*end && (!*next || *next == sep)) { | |
1793 | str++; | |
1794 | found_esc = true; | |
1795 | } | |
1796 | } | |
1797 | ||
1798 | if (!found_esc) | |
1799 | for (; *end && (*end != sep); end++) | |
1800 | /* find sep or end of string */; | |
1801 | ||
81c3f413 BF |
1802 | strlen = end - str; |
1803 | if (strlen) { | |
1804 | if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0) | |
1805 | return nfserr_resource; | |
1806 | WRITE32(strlen); | |
1807 | WRITEMEM(str, strlen); | |
1808 | count++; | |
1809 | } | |
1810 | else | |
1811 | end++; | |
1812 | str = end; | |
1813 | } | |
1814 | *pp = p; | |
1815 | p = countp; | |
1816 | WRITE32(count); | |
1817 | return 0; | |
1818 | } | |
1819 | ||
e7a0444a WAA |
1820 | /* Encode as an array of strings the string given with components |
1821 | * separated @sep. | |
1822 | */ | |
1823 | static __be32 nfsd4_encode_components(char sep, char *components, | |
1824 | __be32 **pp, int *buflen) | |
1825 | { | |
1826 | return nfsd4_encode_components_esc(sep, components, pp, buflen, 0, 0); | |
1827 | } | |
1828 | ||
81c3f413 BF |
1829 | /* |
1830 | * encode a location element of a fs_locations structure | |
1831 | */ | |
b37ad28b | 1832 | static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location, |
2ebbc012 | 1833 | __be32 **pp, int *buflen) |
81c3f413 | 1834 | { |
b37ad28b | 1835 | __be32 status; |
2ebbc012 | 1836 | __be32 *p = *pp; |
81c3f413 | 1837 | |
e7a0444a WAA |
1838 | status = nfsd4_encode_components_esc(':', location->hosts, &p, buflen, |
1839 | '[', ']'); | |
81c3f413 BF |
1840 | if (status) |
1841 | return status; | |
1842 | status = nfsd4_encode_components('/', location->path, &p, buflen); | |
1843 | if (status) | |
1844 | return status; | |
1845 | *pp = p; | |
1846 | return 0; | |
1847 | } | |
1848 | ||
1849 | /* | |
ed748aac | 1850 | * Encode a path in RFC3530 'pathname4' format |
81c3f413 | 1851 | */ |
ed748aac TM |
1852 | static __be32 nfsd4_encode_path(const struct path *root, |
1853 | const struct path *path, __be32 **pp, int *buflen) | |
81c3f413 | 1854 | { |
301f0268 | 1855 | struct path cur = *path; |
ed748aac TM |
1856 | __be32 *p = *pp; |
1857 | struct dentry **components = NULL; | |
1858 | unsigned int ncomponents = 0; | |
1859 | __be32 err = nfserr_jukebox; | |
81c3f413 | 1860 | |
ed748aac | 1861 | dprintk("nfsd4_encode_components("); |
81c3f413 | 1862 | |
ed748aac TM |
1863 | path_get(&cur); |
1864 | /* First walk the path up to the nfsd root, and store the | |
1865 | * dentries/path components in an array. | |
1866 | */ | |
1867 | for (;;) { | |
1868 | if (cur.dentry == root->dentry && cur.mnt == root->mnt) | |
1869 | break; | |
1870 | if (cur.dentry == cur.mnt->mnt_root) { | |
1871 | if (follow_up(&cur)) | |
1872 | continue; | |
1873 | goto out_free; | |
1874 | } | |
1875 | if ((ncomponents & 15) == 0) { | |
1876 | struct dentry **new; | |
1877 | new = krealloc(components, | |
1878 | sizeof(*new) * (ncomponents + 16), | |
1879 | GFP_KERNEL); | |
1880 | if (!new) | |
1881 | goto out_free; | |
1882 | components = new; | |
1883 | } | |
1884 | components[ncomponents++] = cur.dentry; | |
1885 | cur.dentry = dget_parent(cur.dentry); | |
1886 | } | |
81c3f413 | 1887 | |
ed748aac TM |
1888 | *buflen -= 4; |
1889 | if (*buflen < 0) | |
1890 | goto out_free; | |
1891 | WRITE32(ncomponents); | |
1892 | ||
1893 | while (ncomponents) { | |
1894 | struct dentry *dentry = components[ncomponents - 1]; | |
301f0268 | 1895 | unsigned int len; |
ed748aac | 1896 | |
301f0268 AV |
1897 | spin_lock(&dentry->d_lock); |
1898 | len = dentry->d_name.len; | |
ed748aac | 1899 | *buflen -= 4 + (XDR_QUADLEN(len) << 2); |
301f0268 AV |
1900 | if (*buflen < 0) { |
1901 | spin_unlock(&dentry->d_lock); | |
ed748aac | 1902 | goto out_free; |
301f0268 | 1903 | } |
ed748aac TM |
1904 | WRITE32(len); |
1905 | WRITEMEM(dentry->d_name.name, len); | |
1906 | dprintk("/%s", dentry->d_name.name); | |
301f0268 | 1907 | spin_unlock(&dentry->d_lock); |
ed748aac TM |
1908 | dput(dentry); |
1909 | ncomponents--; | |
81c3f413 | 1910 | } |
ed748aac TM |
1911 | |
1912 | *pp = p; | |
1913 | err = 0; | |
1914 | out_free: | |
1915 | dprintk(")\n"); | |
1916 | while (ncomponents) | |
1917 | dput(components[--ncomponents]); | |
1918 | kfree(components); | |
1919 | path_put(&cur); | |
1920 | return err; | |
1921 | } | |
1922 | ||
1923 | static __be32 nfsd4_encode_fsloc_fsroot(struct svc_rqst *rqstp, | |
1924 | const struct path *path, __be32 **pp, int *buflen) | |
1925 | { | |
1926 | struct svc_export *exp_ps; | |
1927 | __be32 res; | |
1928 | ||
1929 | exp_ps = rqst_find_fsidzero_export(rqstp); | |
1930 | if (IS_ERR(exp_ps)) | |
1931 | return nfserrno(PTR_ERR(exp_ps)); | |
1932 | res = nfsd4_encode_path(&exp_ps->ex_path, path, pp, buflen); | |
1933 | exp_put(exp_ps); | |
1934 | return res; | |
81c3f413 BF |
1935 | } |
1936 | ||
1937 | /* | |
1938 | * encode a fs_locations structure | |
1939 | */ | |
b37ad28b | 1940 | static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp, |
81c3f413 | 1941 | struct svc_export *exp, |
2ebbc012 | 1942 | __be32 **pp, int *buflen) |
81c3f413 | 1943 | { |
b37ad28b | 1944 | __be32 status; |
cc45f017 | 1945 | int i; |
2ebbc012 | 1946 | __be32 *p = *pp; |
81c3f413 | 1947 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
81c3f413 | 1948 | |
ed748aac | 1949 | status = nfsd4_encode_fsloc_fsroot(rqstp, &exp->ex_path, &p, buflen); |
81c3f413 BF |
1950 | if (status) |
1951 | return status; | |
1952 | if ((*buflen -= 4) < 0) | |
1953 | return nfserr_resource; | |
1954 | WRITE32(fslocs->locations_count); | |
1955 | for (i=0; i<fslocs->locations_count; i++) { | |
1956 | status = nfsd4_encode_fs_location4(&fslocs->locations[i], | |
1957 | &p, buflen); | |
1958 | if (status) | |
1959 | return status; | |
1960 | } | |
1961 | *pp = p; | |
1962 | return 0; | |
1963 | } | |
1da177e4 | 1964 | |
3d2544b1 BF |
1965 | static u32 nfs4_file_type(umode_t mode) |
1966 | { | |
1967 | switch (mode & S_IFMT) { | |
1968 | case S_IFIFO: return NF4FIFO; | |
1969 | case S_IFCHR: return NF4CHR; | |
1970 | case S_IFDIR: return NF4DIR; | |
1971 | case S_IFBLK: return NF4BLK; | |
1972 | case S_IFLNK: return NF4LNK; | |
1973 | case S_IFREG: return NF4REG; | |
1974 | case S_IFSOCK: return NF4SOCK; | |
1975 | default: return NF4BAD; | |
1976 | }; | |
1977 | } | |
1da177e4 | 1978 | |
b37ad28b | 1979 | static __be32 |
ab8e4aee | 1980 | nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, kuid_t uid, kgid_t gid, |
2ebbc012 | 1981 | __be32 **p, int *buflen) |
1da177e4 LT |
1982 | { |
1983 | int status; | |
1984 | ||
1985 | if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) | |
1986 | return nfserr_resource; | |
1987 | if (whotype != NFS4_ACL_WHO_NAMED) | |
1988 | status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); | |
ab8e4aee EB |
1989 | else if (gid_valid(gid)) |
1990 | status = nfsd_map_gid_to_name(rqstp, gid, (u8 *)(*p + 1)); | |
1da177e4 | 1991 | else |
ab8e4aee | 1992 | status = nfsd_map_uid_to_name(rqstp, uid, (u8 *)(*p + 1)); |
1da177e4 LT |
1993 | if (status < 0) |
1994 | return nfserrno(status); | |
1995 | *p = xdr_encode_opaque(*p, NULL, status); | |
1996 | *buflen -= (XDR_QUADLEN(status) << 2) + 4; | |
1997 | BUG_ON(*buflen < 0); | |
1998 | return 0; | |
1999 | } | |
2000 | ||
b37ad28b | 2001 | static inline __be32 |
ab8e4aee | 2002 | nfsd4_encode_user(struct svc_rqst *rqstp, kuid_t user, __be32 **p, int *buflen) |
1da177e4 | 2003 | { |
ab8e4aee EB |
2004 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, user, INVALID_GID, |
2005 | p, buflen); | |
1da177e4 LT |
2006 | } |
2007 | ||
b37ad28b | 2008 | static inline __be32 |
ab8e4aee | 2009 | nfsd4_encode_group(struct svc_rqst *rqstp, kgid_t group, __be32 **p, int *buflen) |
1da177e4 | 2010 | { |
ab8e4aee EB |
2011 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, INVALID_UID, group, |
2012 | p, buflen); | |
1da177e4 LT |
2013 | } |
2014 | ||
b37ad28b | 2015 | static inline __be32 |
ab8e4aee | 2016 | nfsd4_encode_aclname(struct svc_rqst *rqstp, struct nfs4_ace *ace, |
2ebbc012 | 2017 | __be32 **p, int *buflen) |
1da177e4 | 2018 | { |
ab8e4aee EB |
2019 | kuid_t uid = INVALID_UID; |
2020 | kgid_t gid = INVALID_GID; | |
2021 | ||
2022 | if (ace->whotype == NFS4_ACL_WHO_NAMED) { | |
2023 | if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) | |
2024 | gid = ace->who_gid; | |
2025 | else | |
2026 | uid = ace->who_uid; | |
2027 | } | |
2028 | return nfsd4_encode_name(rqstp, ace->whotype, uid, gid, p, buflen); | |
1da177e4 LT |
2029 | } |
2030 | ||
42ca0993 BF |
2031 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
2032 | FATTR4_WORD0_RDATTR_ERROR) | |
2033 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
2034 | ||
18032ca0 DQ |
2035 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
2036 | static inline __be32 | |
2037 | nfsd4_encode_security_label(struct svc_rqst *rqstp, void *context, int len, __be32 **pp, int *buflen) | |
2038 | { | |
2039 | __be32 *p = *pp; | |
2040 | ||
2041 | if (*buflen < ((XDR_QUADLEN(len) << 2) + 4 + 4 + 4)) | |
2042 | return nfserr_resource; | |
2043 | ||
2044 | /* | |
2045 | * For now we use a 0 here to indicate the null translation; in | |
2046 | * the future we may place a call to translation code here. | |
2047 | */ | |
2048 | if ((*buflen -= 8) < 0) | |
2049 | return nfserr_resource; | |
2050 | ||
2051 | WRITE32(0); /* lfs */ | |
2052 | WRITE32(0); /* pi */ | |
2053 | p = xdr_encode_opaque(p, context, len); | |
2054 | *buflen -= (XDR_QUADLEN(len) << 2) + 4; | |
2055 | ||
2056 | *pp = p; | |
2057 | return 0; | |
2058 | } | |
2059 | #else | |
2060 | static inline __be32 | |
ba4e55bb | 2061 | nfsd4_encode_security_label(struct svc_rqst *rqstp, void *context, int len, __be32 **pp, int *buflen) |
18032ca0 DQ |
2062 | { return 0; } |
2063 | #endif | |
2064 | ||
b37ad28b | 2065 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
42ca0993 BF |
2066 | { |
2067 | /* As per referral draft: */ | |
2068 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
2069 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
2070 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
2071 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
2072 | *rdattr_err = NFSERR_MOVED; | |
2073 | else | |
2074 | return nfserr_moved; | |
2075 | } | |
2076 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
2077 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
2078 | return 0; | |
2079 | } | |
1da177e4 | 2080 | |
ae7095a7 BF |
2081 | |
2082 | static int get_parent_attributes(struct svc_export *exp, struct kstat *stat) | |
2083 | { | |
2084 | struct path path = exp->ex_path; | |
2085 | int err; | |
2086 | ||
2087 | path_get(&path); | |
2088 | while (follow_up(&path)) { | |
2089 | if (path.dentry != path.mnt->mnt_root) | |
2090 | break; | |
2091 | } | |
3dadecce | 2092 | err = vfs_getattr(&path, stat); |
ae7095a7 BF |
2093 | path_put(&path); |
2094 | return err; | |
2095 | } | |
2096 | ||
1da177e4 LT |
2097 | /* |
2098 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
2099 | * ourselves. | |
2100 | * | |
84822d0b | 2101 | * countp is the buffer size in _words_ |
1da177e4 | 2102 | */ |
b37ad28b | 2103 | __be32 |
1da177e4 | 2104 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, |
84822d0b | 2105 | struct dentry *dentry, __be32 **buffer, int count, u32 *bmval, |
406a7ea9 | 2106 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
2107 | { |
2108 | u32 bmval0 = bmval[0]; | |
2109 | u32 bmval1 = bmval[1]; | |
7e705706 | 2110 | u32 bmval2 = bmval[2]; |
1da177e4 LT |
2111 | struct kstat stat; |
2112 | struct svc_fh tempfh; | |
2113 | struct kstatfs statfs; | |
84822d0b | 2114 | int buflen = count << 2; |
2ebbc012 | 2115 | __be32 *attrlenp; |
1da177e4 LT |
2116 | u32 dummy; |
2117 | u64 dummy64; | |
42ca0993 | 2118 | u32 rdattr_err = 0; |
84822d0b | 2119 | __be32 *p = *buffer; |
b37ad28b | 2120 | __be32 status; |
b8dd7b9a | 2121 | int err; |
1da177e4 LT |
2122 | int aclsupport = 0; |
2123 | struct nfs4_acl *acl = NULL; | |
18032ca0 DQ |
2124 | void *context = NULL; |
2125 | int contextlen; | |
2126 | bool contextsupport = false; | |
7e705706 AA |
2127 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
2128 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
2129 | struct path path = { |
2130 | .mnt = exp->ex_path.mnt, | |
2131 | .dentry = dentry, | |
2132 | }; | |
3d733711 | 2133 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
1da177e4 LT |
2134 | |
2135 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
7e705706 AA |
2136 | BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); |
2137 | BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); | |
2138 | BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); | |
1da177e4 | 2139 | |
42ca0993 | 2140 | if (exp->ex_fslocs.migrated) { |
7e705706 | 2141 | BUG_ON(bmval[2]); |
42ca0993 BF |
2142 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); |
2143 | if (status) | |
2144 | goto out; | |
2145 | } | |
2146 | ||
3dadecce | 2147 | err = vfs_getattr(&path, &stat); |
b8dd7b9a | 2148 | if (err) |
1da177e4 | 2149 | goto out_nfserr; |
a16e92ed BF |
2150 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | |
2151 | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
2152 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
2153 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 2154 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 2155 | if (err) |
1da177e4 LT |
2156 | goto out_nfserr; |
2157 | } | |
2158 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
2159 | fh_init(&tempfh, NFS4_FHSIZE); | |
2160 | status = fh_compose(&tempfh, exp, dentry, NULL); | |
2161 | if (status) | |
2162 | goto out; | |
2163 | fhp = &tempfh; | |
2164 | } | |
2165 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
2166 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
b8dd7b9a AV |
2167 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
2168 | aclsupport = (err == 0); | |
1da177e4 | 2169 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 2170 | if (err == -EOPNOTSUPP) |
1da177e4 | 2171 | bmval0 &= ~FATTR4_WORD0_ACL; |
b8dd7b9a | 2172 | else if (err == -EINVAL) { |
1da177e4 LT |
2173 | status = nfserr_attrnotsupp; |
2174 | goto out; | |
b8dd7b9a | 2175 | } else if (err != 0) |
1da177e4 LT |
2176 | goto out_nfserr; |
2177 | } | |
2178 | } | |
1da177e4 | 2179 | |
18032ca0 DQ |
2180 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
2181 | if ((bmval[2] & FATTR4_WORD2_SECURITY_LABEL) || | |
2182 | bmval[0] & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
2183 | err = security_inode_getsecctx(dentry->d_inode, | |
2184 | &context, &contextlen); | |
2185 | contextsupport = (err == 0); | |
2186 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { | |
2187 | if (err == -EOPNOTSUPP) | |
2188 | bmval2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2189 | else if (err) | |
2190 | goto out_nfserr; | |
2191 | } | |
2192 | } | |
2193 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ | |
2194 | ||
2b44f1ba BH |
2195 | if (bmval2) { |
2196 | if ((buflen -= 16) < 0) | |
2197 | goto out_resource; | |
7e705706 AA |
2198 | WRITE32(3); |
2199 | WRITE32(bmval0); | |
2200 | WRITE32(bmval1); | |
2201 | WRITE32(bmval2); | |
2b44f1ba BH |
2202 | } else if (bmval1) { |
2203 | if ((buflen -= 12) < 0) | |
2204 | goto out_resource; | |
7e705706 AA |
2205 | WRITE32(2); |
2206 | WRITE32(bmval0); | |
2207 | WRITE32(bmval1); | |
2208 | } else { | |
2b44f1ba BH |
2209 | if ((buflen -= 8) < 0) |
2210 | goto out_resource; | |
7e705706 AA |
2211 | WRITE32(1); |
2212 | WRITE32(bmval0); | |
2213 | } | |
1da177e4 LT |
2214 | attrlenp = p++; /* to be backfilled later */ |
2215 | ||
2216 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
7e705706 AA |
2217 | u32 word0 = nfsd_suppattrs0(minorversion); |
2218 | u32 word1 = nfsd_suppattrs1(minorversion); | |
2219 | u32 word2 = nfsd_suppattrs2(minorversion); | |
2220 | ||
42ca0993 BF |
2221 | if (!aclsupport) |
2222 | word0 &= ~FATTR4_WORD0_ACL; | |
18032ca0 DQ |
2223 | if (!contextsupport) |
2224 | word2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
7e705706 | 2225 | if (!word2) { |
2b44f1ba BH |
2226 | if ((buflen -= 12) < 0) |
2227 | goto out_resource; | |
7e705706 AA |
2228 | WRITE32(2); |
2229 | WRITE32(word0); | |
2230 | WRITE32(word1); | |
2231 | } else { | |
2b44f1ba BH |
2232 | if ((buflen -= 16) < 0) |
2233 | goto out_resource; | |
7e705706 AA |
2234 | WRITE32(3); |
2235 | WRITE32(word0); | |
2236 | WRITE32(word1); | |
2237 | WRITE32(word2); | |
2238 | } | |
1da177e4 LT |
2239 | } |
2240 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
2241 | if ((buflen -= 4) < 0) | |
2242 | goto out_resource; | |
3d2544b1 | 2243 | dummy = nfs4_file_type(stat.mode); |
1da177e4 LT |
2244 | if (dummy == NF4BAD) |
2245 | goto out_serverfault; | |
2246 | WRITE32(dummy); | |
2247 | } | |
2248 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
2249 | if ((buflen -= 4) < 0) | |
2250 | goto out_resource; | |
49640001 | 2251 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
e34ac862 | 2252 | WRITE32(NFS4_FH_PERSISTENT); |
49640001 | 2253 | else |
e34ac862 | 2254 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
1da177e4 LT |
2255 | } |
2256 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
1da177e4 LT |
2257 | if ((buflen -= 8) < 0) |
2258 | goto out_resource; | |
c654b8a9 | 2259 | write_change(&p, &stat, dentry->d_inode); |
1da177e4 LT |
2260 | } |
2261 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
2262 | if ((buflen -= 8) < 0) | |
2263 | goto out_resource; | |
2264 | WRITE64(stat.size); | |
2265 | } | |
2266 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
2267 | if ((buflen -= 4) < 0) | |
2268 | goto out_resource; | |
2269 | WRITE32(1); | |
2270 | } | |
2271 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
2272 | if ((buflen -= 4) < 0) | |
2273 | goto out_resource; | |
2274 | WRITE32(1); | |
2275 | } | |
2276 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
2277 | if ((buflen -= 4) < 0) | |
2278 | goto out_resource; | |
2279 | WRITE32(0); | |
2280 | } | |
2281 | if (bmval0 & FATTR4_WORD0_FSID) { | |
2282 | if ((buflen -= 16) < 0) | |
2283 | goto out_resource; | |
42ca0993 BF |
2284 | if (exp->ex_fslocs.migrated) { |
2285 | WRITE64(NFS4_REFERRAL_FSID_MAJOR); | |
2286 | WRITE64(NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
2287 | } else switch(fsid_source(fhp)) { |
2288 | case FSIDSOURCE_FSID: | |
1da177e4 LT |
2289 | WRITE64((u64)exp->ex_fsid); |
2290 | WRITE64((u64)0); | |
af6a4e28 N |
2291 | break; |
2292 | case FSIDSOURCE_DEV: | |
1da177e4 LT |
2293 | WRITE32(0); |
2294 | WRITE32(MAJOR(stat.dev)); | |
2295 | WRITE32(0); | |
2296 | WRITE32(MINOR(stat.dev)); | |
af6a4e28 N |
2297 | break; |
2298 | case FSIDSOURCE_UUID: | |
2299 | WRITEMEM(exp->ex_uuid, 16); | |
2300 | break; | |
1da177e4 LT |
2301 | } |
2302 | } | |
2303 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
2304 | if ((buflen -= 4) < 0) | |
2305 | goto out_resource; | |
2306 | WRITE32(0); | |
2307 | } | |
2308 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
2309 | if ((buflen -= 4) < 0) | |
2310 | goto out_resource; | |
3d733711 | 2311 | WRITE32(nn->nfsd4_lease); |
1da177e4 LT |
2312 | } |
2313 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
2314 | if ((buflen -= 4) < 0) | |
2315 | goto out_resource; | |
42ca0993 | 2316 | WRITE32(rdattr_err); |
1da177e4 LT |
2317 | } |
2318 | if (bmval0 & FATTR4_WORD0_ACL) { | |
2319 | struct nfs4_ace *ace; | |
1da177e4 LT |
2320 | |
2321 | if (acl == NULL) { | |
2322 | if ((buflen -= 4) < 0) | |
2323 | goto out_resource; | |
2324 | ||
2325 | WRITE32(0); | |
2326 | goto out_acl; | |
2327 | } | |
2328 | if ((buflen -= 4) < 0) | |
2329 | goto out_resource; | |
2330 | WRITE32(acl->naces); | |
2331 | ||
28e05dd8 | 2332 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
1da177e4 LT |
2333 | if ((buflen -= 4*3) < 0) |
2334 | goto out_resource; | |
2335 | WRITE32(ace->type); | |
2336 | WRITE32(ace->flag); | |
2337 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); | |
ab8e4aee | 2338 | status = nfsd4_encode_aclname(rqstp, ace, &p, &buflen); |
1da177e4 LT |
2339 | if (status == nfserr_resource) |
2340 | goto out_resource; | |
2341 | if (status) | |
2342 | goto out; | |
2343 | } | |
2344 | } | |
2345 | out_acl: | |
2346 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
2347 | if ((buflen -= 4) < 0) | |
2348 | goto out_resource; | |
2349 | WRITE32(aclsupport ? | |
2350 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); | |
2351 | } | |
2352 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
2353 | if ((buflen -= 4) < 0) | |
2354 | goto out_resource; | |
2355 | WRITE32(1); | |
2356 | } | |
2357 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
2358 | if ((buflen -= 4) < 0) | |
2359 | goto out_resource; | |
2930d381 | 2360 | WRITE32(0); |
1da177e4 LT |
2361 | } |
2362 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
2363 | if ((buflen -= 4) < 0) | |
2364 | goto out_resource; | |
2365 | WRITE32(1); | |
2366 | } | |
2367 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
2368 | if ((buflen -= 4) < 0) | |
2369 | goto out_resource; | |
2370 | WRITE32(1); | |
2371 | } | |
2372 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
2373 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; | |
2374 | if (buflen < 0) | |
2375 | goto out_resource; | |
2376 | WRITE32(fhp->fh_handle.fh_size); | |
2377 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); | |
2378 | } | |
2379 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
2380 | if ((buflen -= 8) < 0) | |
2381 | goto out_resource; | |
40ee5dc6 | 2382 | WRITE64(stat.ino); |
1da177e4 LT |
2383 | } |
2384 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
2385 | if ((buflen -= 8) < 0) | |
2386 | goto out_resource; | |
2387 | WRITE64((u64) statfs.f_ffree); | |
2388 | } | |
2389 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
2390 | if ((buflen -= 8) < 0) | |
2391 | goto out_resource; | |
2392 | WRITE64((u64) statfs.f_ffree); | |
2393 | } | |
2394 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
2395 | if ((buflen -= 8) < 0) | |
2396 | goto out_resource; | |
2397 | WRITE64((u64) statfs.f_files); | |
2398 | } | |
81c3f413 BF |
2399 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
2400 | status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); | |
2401 | if (status == nfserr_resource) | |
2402 | goto out_resource; | |
2403 | if (status) | |
2404 | goto out; | |
2405 | } | |
1da177e4 LT |
2406 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
2407 | if ((buflen -= 4) < 0) | |
2408 | goto out_resource; | |
2409 | WRITE32(1); | |
2410 | } | |
2411 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
2412 | if ((buflen -= 8) < 0) | |
2413 | goto out_resource; | |
aea240f4 | 2414 | WRITE64(exp->ex_path.mnt->mnt_sb->s_maxbytes); |
1da177e4 LT |
2415 | } |
2416 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
2417 | if ((buflen -= 4) < 0) | |
2418 | goto out_resource; | |
2419 | WRITE32(255); | |
2420 | } | |
2421 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
2422 | if ((buflen -= 4) < 0) | |
2423 | goto out_resource; | |
a16e92ed | 2424 | WRITE32(statfs.f_namelen); |
1da177e4 LT |
2425 | } |
2426 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
2427 | if ((buflen -= 8) < 0) | |
2428 | goto out_resource; | |
7adae489 | 2429 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2430 | } |
2431 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
2432 | if ((buflen -= 8) < 0) | |
2433 | goto out_resource; | |
7adae489 | 2434 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2435 | } |
2436 | if (bmval1 & FATTR4_WORD1_MODE) { | |
2437 | if ((buflen -= 4) < 0) | |
2438 | goto out_resource; | |
2439 | WRITE32(stat.mode & S_IALLUGO); | |
2440 | } | |
2441 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
2442 | if ((buflen -= 4) < 0) | |
2443 | goto out_resource; | |
2444 | WRITE32(1); | |
2445 | } | |
2446 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
2447 | if ((buflen -= 4) < 0) | |
2448 | goto out_resource; | |
2449 | WRITE32(stat.nlink); | |
2450 | } | |
2451 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
2452 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); | |
2453 | if (status == nfserr_resource) | |
2454 | goto out_resource; | |
2455 | if (status) | |
2456 | goto out; | |
2457 | } | |
2458 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
2459 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); | |
2460 | if (status == nfserr_resource) | |
2461 | goto out_resource; | |
2462 | if (status) | |
2463 | goto out; | |
2464 | } | |
2465 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
2466 | if ((buflen -= 8) < 0) | |
2467 | goto out_resource; | |
2468 | WRITE32((u32) MAJOR(stat.rdev)); | |
2469 | WRITE32((u32) MINOR(stat.rdev)); | |
2470 | } | |
2471 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
2472 | if ((buflen -= 8) < 0) | |
2473 | goto out_resource; | |
2474 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
2475 | WRITE64(dummy64); | |
2476 | } | |
2477 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
2478 | if ((buflen -= 8) < 0) | |
2479 | goto out_resource; | |
2480 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
2481 | WRITE64(dummy64); | |
2482 | } | |
2483 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
2484 | if ((buflen -= 8) < 0) | |
2485 | goto out_resource; | |
2486 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
2487 | WRITE64(dummy64); | |
2488 | } | |
2489 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
2490 | if ((buflen -= 8) < 0) | |
2491 | goto out_resource; | |
2492 | dummy64 = (u64)stat.blocks << 9; | |
2493 | WRITE64(dummy64); | |
2494 | } | |
2495 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
2496 | if ((buflen -= 12) < 0) | |
2497 | goto out_resource; | |
bf8d9097 | 2498 | WRITE64((s64)stat.atime.tv_sec); |
1da177e4 LT |
2499 | WRITE32(stat.atime.tv_nsec); |
2500 | } | |
2501 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
2502 | if ((buflen -= 12) < 0) | |
2503 | goto out_resource; | |
2504 | WRITE32(0); | |
2505 | WRITE32(1); | |
2506 | WRITE32(0); | |
2507 | } | |
2508 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
2509 | if ((buflen -= 12) < 0) | |
2510 | goto out_resource; | |
bf8d9097 | 2511 | WRITE64((s64)stat.ctime.tv_sec); |
1da177e4 LT |
2512 | WRITE32(stat.ctime.tv_nsec); |
2513 | } | |
2514 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
2515 | if ((buflen -= 12) < 0) | |
2516 | goto out_resource; | |
bf8d9097 | 2517 | WRITE64((s64)stat.mtime.tv_sec); |
1da177e4 LT |
2518 | WRITE32(stat.mtime.tv_nsec); |
2519 | } | |
2520 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
1da177e4 LT |
2521 | if ((buflen -= 8) < 0) |
2522 | goto out_resource; | |
406a7ea9 FF |
2523 | /* |
2524 | * Get parent's attributes if not ignoring crossmount | |
2525 | * and this is the root of a cross-mounted filesystem. | |
2526 | */ | |
2527 | if (ignore_crossmnt == 0 && | |
ae7095a7 BF |
2528 | dentry == exp->ex_path.mnt->mnt_root) |
2529 | get_parent_attributes(exp, &stat); | |
40ee5dc6 | 2530 | WRITE64(stat.ino); |
1da177e4 | 2531 | } |
18032ca0 DQ |
2532 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { |
2533 | status = nfsd4_encode_security_label(rqstp, context, | |
2534 | contextlen, &p, &buflen); | |
2535 | if (status) | |
2536 | goto out; | |
2537 | } | |
8c18f205 BH |
2538 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
2539 | WRITE32(3); | |
2540 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0); | |
2541 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1); | |
2542 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2); | |
2543 | } | |
7e705706 | 2544 | |
1da177e4 | 2545 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); |
84822d0b | 2546 | *buffer = p; |
1da177e4 LT |
2547 | status = nfs_ok; |
2548 | ||
2549 | out: | |
ba4e55bb | 2550 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
18032ca0 DQ |
2551 | if (context) |
2552 | security_release_secctx(context, contextlen); | |
ba4e55bb | 2553 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ |
28e05dd8 | 2554 | kfree(acl); |
1da177e4 LT |
2555 | if (fhp == &tempfh) |
2556 | fh_put(&tempfh); | |
2557 | return status; | |
2558 | out_nfserr: | |
b8dd7b9a | 2559 | status = nfserrno(err); |
1da177e4 LT |
2560 | goto out; |
2561 | out_resource: | |
1da177e4 LT |
2562 | status = nfserr_resource; |
2563 | goto out; | |
2564 | out_serverfault: | |
2565 | status = nfserr_serverfault; | |
2566 | goto out; | |
2567 | } | |
2568 | ||
c0ce6ec8 BF |
2569 | static inline int attributes_need_mount(u32 *bmval) |
2570 | { | |
2571 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2572 | return 1; | |
2573 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2574 | return 1; | |
2575 | return 0; | |
2576 | } | |
2577 | ||
b37ad28b | 2578 | static __be32 |
1da177e4 | 2579 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, |
84822d0b | 2580 | const char *name, int namlen, __be32 **p, int buflen) |
1da177e4 LT |
2581 | { |
2582 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2583 | struct dentry *dentry; | |
b37ad28b | 2584 | __be32 nfserr; |
406a7ea9 | 2585 | int ignore_crossmnt = 0; |
1da177e4 LT |
2586 | |
2587 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
2588 | if (IS_ERR(dentry)) | |
2589 | return nfserrno(PTR_ERR(dentry)); | |
b2c0cea6 BF |
2590 | if (!dentry->d_inode) { |
2591 | /* | |
2592 | * nfsd_buffered_readdir drops the i_mutex between | |
2593 | * readdir and calling this callback, leaving a window | |
2594 | * where this directory entry could have gone away. | |
2595 | */ | |
2596 | dput(dentry); | |
2597 | return nfserr_noent; | |
2598 | } | |
1da177e4 LT |
2599 | |
2600 | exp_get(exp); | |
406a7ea9 FF |
2601 | /* |
2602 | * In the case of a mountpoint, the client may be asking for | |
2603 | * attributes that are only properties of the underlying filesystem | |
2604 | * as opposed to the cross-mounted file system. In such a case, | |
2605 | * we will not follow the cross mount and will fill the attribtutes | |
2606 | * directly from the mountpoint dentry. | |
2607 | */ | |
3227fa41 | 2608 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
2609 | int err; |
2610 | ||
3227fa41 BF |
2611 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
2612 | && !attributes_need_mount(cd->rd_bmval)) { | |
2613 | ignore_crossmnt = 1; | |
2614 | goto out_encode; | |
2615 | } | |
dcb488a3 AA |
2616 | /* |
2617 | * Why the heck aren't we just using nfsd_lookup?? | |
2618 | * Different "."/".." handling? Something else? | |
2619 | * At least, add a comment here to explain.... | |
2620 | */ | |
021d3a72 BF |
2621 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
2622 | if (err) { | |
2623 | nfserr = nfserrno(err); | |
1da177e4 LT |
2624 | goto out_put; |
2625 | } | |
dcb488a3 AA |
2626 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
2627 | if (nfserr) | |
2628 | goto out_put; | |
1da177e4 LT |
2629 | |
2630 | } | |
3227fa41 | 2631 | out_encode: |
1da177e4 | 2632 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, |
406a7ea9 | 2633 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
2634 | out_put: |
2635 | dput(dentry); | |
2636 | exp_put(exp); | |
2637 | return nfserr; | |
2638 | } | |
2639 | ||
2ebbc012 | 2640 | static __be32 * |
b37ad28b | 2641 | nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr) |
1da177e4 | 2642 | { |
2ebbc012 | 2643 | __be32 *attrlenp; |
1da177e4 LT |
2644 | |
2645 | if (buflen < 6) | |
2646 | return NULL; | |
2647 | *p++ = htonl(2); | |
2648 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
2649 | *p++ = htonl(0); /* bmval1 */ | |
2650 | ||
2651 | attrlenp = p++; | |
2652 | *p++ = nfserr; /* no htonl */ | |
2653 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
2654 | return p; | |
2655 | } | |
2656 | ||
2657 | static int | |
a0ad13ef N |
2658 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
2659 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 2660 | { |
a0ad13ef | 2661 | struct readdir_cd *ccd = ccdv; |
1da177e4 LT |
2662 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
2663 | int buflen; | |
2ebbc012 | 2664 | __be32 *p = cd->buffer; |
b2c0cea6 | 2665 | __be32 *cookiep; |
b37ad28b | 2666 | __be32 nfserr = nfserr_toosmall; |
1da177e4 LT |
2667 | |
2668 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
2669 | if (name && isdotent(name, namlen)) { | |
2670 | cd->common.err = nfs_ok; | |
2671 | return 0; | |
2672 | } | |
2673 | ||
2674 | if (cd->offset) | |
2675 | xdr_encode_hyper(cd->offset, (u64) offset); | |
2676 | ||
2677 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); | |
2678 | if (buflen < 0) | |
2679 | goto fail; | |
2680 | ||
2681 | *p++ = xdr_one; /* mark entry present */ | |
b2c0cea6 | 2682 | cookiep = p; |
1da177e4 LT |
2683 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
2684 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
2685 | ||
84822d0b | 2686 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, &p, buflen); |
1da177e4 LT |
2687 | switch (nfserr) { |
2688 | case nfs_ok: | |
1da177e4 LT |
2689 | break; |
2690 | case nfserr_resource: | |
2691 | nfserr = nfserr_toosmall; | |
2692 | goto fail; | |
b2c0cea6 BF |
2693 | case nfserr_noent: |
2694 | goto skip_entry; | |
1da177e4 LT |
2695 | default: |
2696 | /* | |
2697 | * If the client requested the RDATTR_ERROR attribute, | |
2698 | * we stuff the error code into this attribute | |
2699 | * and continue. If this attribute was not requested, | |
2700 | * then in accordance with the spec, we fail the | |
2701 | * entire READDIR operation(!) | |
2702 | */ | |
2703 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
2704 | goto fail; | |
1da177e4 | 2705 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
34081efc FI |
2706 | if (p == NULL) { |
2707 | nfserr = nfserr_toosmall; | |
1da177e4 | 2708 | goto fail; |
34081efc | 2709 | } |
1da177e4 LT |
2710 | } |
2711 | cd->buflen -= (p - cd->buffer); | |
2712 | cd->buffer = p; | |
b2c0cea6 BF |
2713 | cd->offset = cookiep; |
2714 | skip_entry: | |
1da177e4 LT |
2715 | cd->common.err = nfs_ok; |
2716 | return 0; | |
2717 | fail: | |
2718 | cd->common.err = nfserr; | |
2719 | return -EINVAL; | |
2720 | } | |
2721 | ||
e2f282b9 BH |
2722 | static void |
2723 | nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid) | |
2724 | { | |
bc749ca4 | 2725 | __be32 *p; |
e2f282b9 BH |
2726 | |
2727 | RESERVE_SPACE(sizeof(stateid_t)); | |
2728 | WRITE32(sid->si_generation); | |
2729 | WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
2730 | ADJUST_ARGS(); | |
2731 | } | |
2732 | ||
695e12f8 | 2733 | static __be32 |
b37ad28b | 2734 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 2735 | { |
bc749ca4 | 2736 | __be32 *p; |
1da177e4 LT |
2737 | |
2738 | if (!nfserr) { | |
2739 | RESERVE_SPACE(8); | |
2740 | WRITE32(access->ac_supported); | |
2741 | WRITE32(access->ac_resp_access); | |
2742 | ADJUST_ARGS(); | |
2743 | } | |
695e12f8 | 2744 | return nfserr; |
1da177e4 LT |
2745 | } |
2746 | ||
1d1bc8f2 BF |
2747 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
2748 | { | |
2749 | __be32 *p; | |
2750 | ||
2751 | if (!nfserr) { | |
2752 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 8); | |
2753 | WRITEMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
2754 | WRITE32(bcts->dir); | |
6e67b5d1 | 2755 | /* Sorry, we do not yet support RDMA over 4.1: */ |
1d1bc8f2 BF |
2756 | WRITE32(0); |
2757 | ADJUST_ARGS(); | |
2758 | } | |
2759 | return nfserr; | |
2760 | } | |
2761 | ||
695e12f8 | 2762 | static __be32 |
b37ad28b | 2763 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 | 2764 | { |
e2f282b9 BH |
2765 | if (!nfserr) |
2766 | nfsd4_encode_stateid(resp, &close->cl_stateid); | |
2767 | ||
695e12f8 | 2768 | return nfserr; |
1da177e4 LT |
2769 | } |
2770 | ||
2771 | ||
695e12f8 | 2772 | static __be32 |
b37ad28b | 2773 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 2774 | { |
bc749ca4 | 2775 | __be32 *p; |
1da177e4 LT |
2776 | |
2777 | if (!nfserr) { | |
ab4684d1 CL |
2778 | RESERVE_SPACE(NFS4_VERIFIER_SIZE); |
2779 | WRITEMEM(commit->co_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 LT |
2780 | ADJUST_ARGS(); |
2781 | } | |
695e12f8 | 2782 | return nfserr; |
1da177e4 LT |
2783 | } |
2784 | ||
695e12f8 | 2785 | static __be32 |
b37ad28b | 2786 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 2787 | { |
bc749ca4 | 2788 | __be32 *p; |
1da177e4 LT |
2789 | |
2790 | if (!nfserr) { | |
2791 | RESERVE_SPACE(32); | |
c654b8a9 | 2792 | write_cinfo(&p, &create->cr_cinfo); |
1da177e4 LT |
2793 | WRITE32(2); |
2794 | WRITE32(create->cr_bmval[0]); | |
2795 | WRITE32(create->cr_bmval[1]); | |
2796 | ADJUST_ARGS(); | |
2797 | } | |
695e12f8 | 2798 | return nfserr; |
1da177e4 LT |
2799 | } |
2800 | ||
b37ad28b AV |
2801 | static __be32 |
2802 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
2803 | { |
2804 | struct svc_fh *fhp = getattr->ga_fhp; | |
2805 | int buflen; | |
2806 | ||
2807 | if (nfserr) | |
2808 | return nfserr; | |
2809 | ||
2810 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); | |
2811 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, | |
84822d0b | 2812 | &resp->p, buflen, getattr->ga_bmval, |
406a7ea9 | 2813 | resp->rqstp, 0); |
1da177e4 LT |
2814 | return nfserr; |
2815 | } | |
2816 | ||
695e12f8 BH |
2817 | static __be32 |
2818 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 2819 | { |
695e12f8 | 2820 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 2821 | unsigned int len; |
bc749ca4 | 2822 | __be32 *p; |
1da177e4 LT |
2823 | |
2824 | if (!nfserr) { | |
2825 | len = fhp->fh_handle.fh_size; | |
2826 | RESERVE_SPACE(len + 4); | |
2827 | WRITE32(len); | |
2828 | WRITEMEM(&fhp->fh_handle.fh_base, len); | |
2829 | ADJUST_ARGS(); | |
2830 | } | |
695e12f8 | 2831 | return nfserr; |
1da177e4 LT |
2832 | } |
2833 | ||
2834 | /* | |
2835 | * Including all fields other than the name, a LOCK4denied structure requires | |
2836 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
2837 | */ | |
2838 | static void | |
2839 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) | |
2840 | { | |
7c13f344 | 2841 | struct xdr_netobj *conf = &ld->ld_owner; |
bc749ca4 | 2842 | __be32 *p; |
1da177e4 | 2843 | |
7c13f344 | 2844 | RESERVE_SPACE(32 + XDR_LEN(conf->len)); |
1da177e4 LT |
2845 | WRITE64(ld->ld_start); |
2846 | WRITE64(ld->ld_length); | |
2847 | WRITE32(ld->ld_type); | |
7c13f344 | 2848 | if (conf->len) { |
1da177e4 | 2849 | WRITEMEM(&ld->ld_clientid, 8); |
7c13f344 BF |
2850 | WRITE32(conf->len); |
2851 | WRITEMEM(conf->data, conf->len); | |
2852 | kfree(conf->data); | |
1da177e4 LT |
2853 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
2854 | WRITE64((u64)0); /* clientid */ | |
2855 | WRITE32(0); /* length of owner name */ | |
2856 | } | |
2857 | ADJUST_ARGS(); | |
2858 | } | |
2859 | ||
695e12f8 | 2860 | static __be32 |
b37ad28b | 2861 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 2862 | { |
e2f282b9 BH |
2863 | if (!nfserr) |
2864 | nfsd4_encode_stateid(resp, &lock->lk_resp_stateid); | |
2865 | else if (nfserr == nfserr_denied) | |
1da177e4 LT |
2866 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); |
2867 | ||
695e12f8 | 2868 | return nfserr; |
1da177e4 LT |
2869 | } |
2870 | ||
695e12f8 | 2871 | static __be32 |
b37ad28b | 2872 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 LT |
2873 | { |
2874 | if (nfserr == nfserr_denied) | |
2875 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); | |
695e12f8 | 2876 | return nfserr; |
1da177e4 LT |
2877 | } |
2878 | ||
695e12f8 | 2879 | static __be32 |
b37ad28b | 2880 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 | 2881 | { |
e2f282b9 BH |
2882 | if (!nfserr) |
2883 | nfsd4_encode_stateid(resp, &locku->lu_stateid); | |
2884 | ||
695e12f8 | 2885 | return nfserr; |
1da177e4 LT |
2886 | } |
2887 | ||
2888 | ||
695e12f8 | 2889 | static __be32 |
b37ad28b | 2890 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 2891 | { |
bc749ca4 | 2892 | __be32 *p; |
1da177e4 LT |
2893 | |
2894 | if (!nfserr) { | |
2895 | RESERVE_SPACE(20); | |
c654b8a9 | 2896 | write_cinfo(&p, &link->li_cinfo); |
1da177e4 LT |
2897 | ADJUST_ARGS(); |
2898 | } | |
695e12f8 | 2899 | return nfserr; |
1da177e4 LT |
2900 | } |
2901 | ||
2902 | ||
695e12f8 | 2903 | static __be32 |
b37ad28b | 2904 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 2905 | { |
bc749ca4 | 2906 | __be32 *p; |
1da177e4 LT |
2907 | |
2908 | if (nfserr) | |
2909 | goto out; | |
2910 | ||
e2f282b9 BH |
2911 | nfsd4_encode_stateid(resp, &open->op_stateid); |
2912 | RESERVE_SPACE(40); | |
c654b8a9 | 2913 | write_cinfo(&p, &open->op_cinfo); |
1da177e4 LT |
2914 | WRITE32(open->op_rflags); |
2915 | WRITE32(2); | |
2916 | WRITE32(open->op_bmval[0]); | |
2917 | WRITE32(open->op_bmval[1]); | |
2918 | WRITE32(open->op_delegate_type); | |
2919 | ADJUST_ARGS(); | |
2920 | ||
2921 | switch (open->op_delegate_type) { | |
2922 | case NFS4_OPEN_DELEGATE_NONE: | |
2923 | break; | |
2924 | case NFS4_OPEN_DELEGATE_READ: | |
e2f282b9 BH |
2925 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2926 | RESERVE_SPACE(20); | |
7b190fec | 2927 | WRITE32(open->op_recall); |
1da177e4 LT |
2928 | |
2929 | /* | |
2930 | * TODO: ACE's in delegations | |
2931 | */ | |
2932 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2933 | WRITE32(0); | |
2934 | WRITE32(0); | |
2935 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2936 | ADJUST_ARGS(); | |
2937 | break; | |
2938 | case NFS4_OPEN_DELEGATE_WRITE: | |
e2f282b9 BH |
2939 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2940 | RESERVE_SPACE(32); | |
1da177e4 LT |
2941 | WRITE32(0); |
2942 | ||
2943 | /* | |
2944 | * TODO: space_limit's in delegations | |
2945 | */ | |
2946 | WRITE32(NFS4_LIMIT_SIZE); | |
2947 | WRITE32(~(u32)0); | |
2948 | WRITE32(~(u32)0); | |
2949 | ||
2950 | /* | |
2951 | * TODO: ACE's in delegations | |
2952 | */ | |
2953 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2954 | WRITE32(0); | |
2955 | WRITE32(0); | |
2956 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2957 | ADJUST_ARGS(); | |
2958 | break; | |
d24433cd BH |
2959 | case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */ |
2960 | switch (open->op_why_no_deleg) { | |
2961 | case WND4_CONTENTION: | |
2962 | case WND4_RESOURCE: | |
2963 | RESERVE_SPACE(8); | |
2964 | WRITE32(open->op_why_no_deleg); | |
2965 | WRITE32(0); /* deleg signaling not supported yet */ | |
2966 | break; | |
2967 | default: | |
2968 | RESERVE_SPACE(4); | |
2969 | WRITE32(open->op_why_no_deleg); | |
2970 | } | |
2971 | ADJUST_ARGS(); | |
2972 | break; | |
1da177e4 LT |
2973 | default: |
2974 | BUG(); | |
2975 | } | |
2976 | /* XXX save filehandle here */ | |
2977 | out: | |
695e12f8 | 2978 | return nfserr; |
1da177e4 LT |
2979 | } |
2980 | ||
695e12f8 | 2981 | static __be32 |
b37ad28b | 2982 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 | 2983 | { |
e2f282b9 BH |
2984 | if (!nfserr) |
2985 | nfsd4_encode_stateid(resp, &oc->oc_resp_stateid); | |
1da177e4 | 2986 | |
695e12f8 | 2987 | return nfserr; |
1da177e4 LT |
2988 | } |
2989 | ||
695e12f8 | 2990 | static __be32 |
b37ad28b | 2991 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 | 2992 | { |
e2f282b9 BH |
2993 | if (!nfserr) |
2994 | nfsd4_encode_stateid(resp, &od->od_stateid); | |
1da177e4 | 2995 | |
695e12f8 | 2996 | return nfserr; |
1da177e4 LT |
2997 | } |
2998 | ||
b37ad28b AV |
2999 | static __be32 |
3000 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
44524359 | 3001 | struct nfsd4_read *read) |
1da177e4 LT |
3002 | { |
3003 | u32 eof; | |
afc59400 BF |
3004 | int v; |
3005 | struct page *page; | |
1da177e4 LT |
3006 | unsigned long maxcount; |
3007 | long len; | |
bc749ca4 | 3008 | __be32 *p; |
1da177e4 LT |
3009 | |
3010 | if (nfserr) | |
3011 | return nfserr; | |
3012 | if (resp->xbuf->page_len) | |
3013 | return nfserr_resource; | |
3014 | ||
3015 | RESERVE_SPACE(8); /* eof flag and byte count */ | |
3016 | ||
7adae489 | 3017 | maxcount = svc_max_payload(resp->rqstp); |
1da177e4 LT |
3018 | if (maxcount > read->rd_length) |
3019 | maxcount = read->rd_length; | |
3020 | ||
3021 | len = maxcount; | |
3022 | v = 0; | |
3023 | while (len > 0) { | |
afc59400 BF |
3024 | page = *(resp->rqstp->rq_next_page); |
3025 | if (!page) { /* ran out of pages */ | |
d5f50b0c BF |
3026 | maxcount -= len; |
3027 | break; | |
3028 | } | |
afc59400 | 3029 | resp->rqstp->rq_vec[v].iov_base = page_address(page); |
3cc03b16 | 3030 | resp->rqstp->rq_vec[v].iov_len = |
44524359 | 3031 | len < PAGE_SIZE ? len : PAGE_SIZE; |
afc59400 | 3032 | resp->rqstp->rq_next_page++; |
1da177e4 LT |
3033 | v++; |
3034 | len -= PAGE_SIZE; | |
3035 | } | |
3036 | read->rd_vlen = v; | |
3037 | ||
039a87ca | 3038 | nfserr = nfsd_read_file(read->rd_rqstp, read->rd_fhp, read->rd_filp, |
3cc03b16 | 3039 | read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, |
1da177e4 LT |
3040 | &maxcount); |
3041 | ||
1da177e4 LT |
3042 | if (nfserr) |
3043 | return nfserr; | |
44524359 N |
3044 | eof = (read->rd_offset + maxcount >= |
3045 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 LT |
3046 | |
3047 | WRITE32(eof); | |
3048 | WRITE32(maxcount); | |
3049 | ADJUST_ARGS(); | |
6ed6decc N |
3050 | resp->xbuf->head[0].iov_len = (char*)p |
3051 | - (char*)resp->xbuf->head[0].iov_base; | |
1da177e4 LT |
3052 | resp->xbuf->page_len = maxcount; |
3053 | ||
6ed6decc | 3054 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 3055 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 3056 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 3057 | if (maxcount&3) { |
6ed6decc N |
3058 | RESERVE_SPACE(4); |
3059 | WRITE32(0); | |
1da177e4 LT |
3060 | resp->xbuf->tail[0].iov_base += maxcount&3; |
3061 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 3062 | ADJUST_ARGS(); |
1da177e4 LT |
3063 | } |
3064 | return 0; | |
3065 | } | |
3066 | ||
b37ad28b AV |
3067 | static __be32 |
3068 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
3069 | { |
3070 | int maxcount; | |
3071 | char *page; | |
bc749ca4 | 3072 | __be32 *p; |
1da177e4 LT |
3073 | |
3074 | if (nfserr) | |
3075 | return nfserr; | |
3076 | if (resp->xbuf->page_len) | |
3077 | return nfserr_resource; | |
afc59400 | 3078 | if (!*resp->rqstp->rq_next_page) |
d5f50b0c | 3079 | return nfserr_resource; |
1da177e4 | 3080 | |
afc59400 | 3081 | page = page_address(*(resp->rqstp->rq_next_page++)); |
1da177e4 LT |
3082 | |
3083 | maxcount = PAGE_SIZE; | |
3084 | RESERVE_SPACE(4); | |
3085 | ||
3086 | /* | |
3087 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
3088 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
3089 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
3090 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
3091 | */ | |
3092 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); | |
3093 | if (nfserr == nfserr_isdir) | |
3094 | return nfserr_inval; | |
3095 | if (nfserr) | |
3096 | return nfserr; | |
3097 | ||
3098 | WRITE32(maxcount); | |
3099 | ADJUST_ARGS(); | |
6ed6decc N |
3100 | resp->xbuf->head[0].iov_len = (char*)p |
3101 | - (char*)resp->xbuf->head[0].iov_base; | |
3102 | resp->xbuf->page_len = maxcount; | |
1da177e4 | 3103 | |
6ed6decc | 3104 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 3105 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 3106 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 3107 | if (maxcount&3) { |
6ed6decc N |
3108 | RESERVE_SPACE(4); |
3109 | WRITE32(0); | |
1da177e4 LT |
3110 | resp->xbuf->tail[0].iov_base += maxcount&3; |
3111 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 3112 | ADJUST_ARGS(); |
1da177e4 LT |
3113 | } |
3114 | return 0; | |
3115 | } | |
3116 | ||
b37ad28b AV |
3117 | static __be32 |
3118 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
3119 | { |
3120 | int maxcount; | |
3121 | loff_t offset; | |
2ebbc012 | 3122 | __be32 *page, *savep, *tailbase; |
bc749ca4 | 3123 | __be32 *p; |
1da177e4 LT |
3124 | |
3125 | if (nfserr) | |
3126 | return nfserr; | |
3127 | if (resp->xbuf->page_len) | |
3128 | return nfserr_resource; | |
afc59400 | 3129 | if (!*resp->rqstp->rq_next_page) |
d5f50b0c | 3130 | return nfserr_resource; |
1da177e4 | 3131 | |
ab4684d1 | 3132 | RESERVE_SPACE(NFS4_VERIFIER_SIZE); |
1da177e4 LT |
3133 | savep = p; |
3134 | ||
3135 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
3136 | WRITE32(0); | |
3137 | WRITE32(0); | |
3138 | ADJUST_ARGS(); | |
3139 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; | |
bb6e8a9f | 3140 | tailbase = p; |
1da177e4 LT |
3141 | |
3142 | maxcount = PAGE_SIZE; | |
3143 | if (maxcount > readdir->rd_maxcount) | |
3144 | maxcount = readdir->rd_maxcount; | |
3145 | ||
3146 | /* | |
3147 | * Convert from bytes to words, account for the two words already | |
3148 | * written, make sure to leave two words at the end for the next | |
3149 | * pointer and eof field. | |
3150 | */ | |
3151 | maxcount = (maxcount >> 2) - 4; | |
3152 | if (maxcount < 0) { | |
3153 | nfserr = nfserr_toosmall; | |
3154 | goto err_no_verf; | |
3155 | } | |
3156 | ||
afc59400 | 3157 | page = page_address(*(resp->rqstp->rq_next_page++)); |
1da177e4 LT |
3158 | readdir->common.err = 0; |
3159 | readdir->buflen = maxcount; | |
3160 | readdir->buffer = page; | |
3161 | readdir->offset = NULL; | |
3162 | ||
3163 | offset = readdir->rd_cookie; | |
3164 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
3165 | &offset, | |
3166 | &readdir->common, nfsd4_encode_dirent); | |
3167 | if (nfserr == nfs_ok && | |
3168 | readdir->common.err == nfserr_toosmall && | |
3169 | readdir->buffer == page) | |
3170 | nfserr = nfserr_toosmall; | |
1da177e4 LT |
3171 | if (nfserr) |
3172 | goto err_no_verf; | |
3173 | ||
3174 | if (readdir->offset) | |
3175 | xdr_encode_hyper(readdir->offset, offset); | |
3176 | ||
3177 | p = readdir->buffer; | |
3178 | *p++ = 0; /* no more entries */ | |
3179 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
afc59400 BF |
3180 | resp->xbuf->page_len = ((char*)p) - |
3181 | (char*)page_address(*(resp->rqstp->rq_next_page-1)); | |
1da177e4 | 3182 | |
bb6e8a9f | 3183 | /* Use rest of head for padding and remaining ops: */ |
bb6e8a9f | 3184 | resp->xbuf->tail[0].iov_base = tailbase; |
1da177e4 LT |
3185 | resp->xbuf->tail[0].iov_len = 0; |
3186 | resp->p = resp->xbuf->tail[0].iov_base; | |
bb6e8a9f | 3187 | resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; |
1da177e4 LT |
3188 | |
3189 | return 0; | |
3190 | err_no_verf: | |
3191 | p = savep; | |
3192 | ADJUST_ARGS(); | |
3193 | return nfserr; | |
3194 | } | |
3195 | ||
695e12f8 | 3196 | static __be32 |
b37ad28b | 3197 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 3198 | { |
bc749ca4 | 3199 | __be32 *p; |
1da177e4 LT |
3200 | |
3201 | if (!nfserr) { | |
3202 | RESERVE_SPACE(20); | |
c654b8a9 | 3203 | write_cinfo(&p, &remove->rm_cinfo); |
1da177e4 LT |
3204 | ADJUST_ARGS(); |
3205 | } | |
695e12f8 | 3206 | return nfserr; |
1da177e4 LT |
3207 | } |
3208 | ||
695e12f8 | 3209 | static __be32 |
b37ad28b | 3210 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 3211 | { |
bc749ca4 | 3212 | __be32 *p; |
1da177e4 LT |
3213 | |
3214 | if (!nfserr) { | |
3215 | RESERVE_SPACE(40); | |
c654b8a9 BF |
3216 | write_cinfo(&p, &rename->rn_sinfo); |
3217 | write_cinfo(&p, &rename->rn_tinfo); | |
1da177e4 LT |
3218 | ADJUST_ARGS(); |
3219 | } | |
695e12f8 | 3220 | return nfserr; |
1da177e4 LT |
3221 | } |
3222 | ||
695e12f8 | 3223 | static __be32 |
22b6dee8 | 3224 | nfsd4_do_encode_secinfo(struct nfsd4_compoundres *resp, |
a77c806f | 3225 | __be32 nfserr, struct svc_export *exp) |
dcb488a3 | 3226 | { |
676e4ebd | 3227 | u32 i, nflavs, supported; |
4796f457 BF |
3228 | struct exp_flavor_info *flavs; |
3229 | struct exp_flavor_info def_flavs[2]; | |
676e4ebd CL |
3230 | __be32 *p, *flavorsp; |
3231 | static bool report = true; | |
dcb488a3 AA |
3232 | |
3233 | if (nfserr) | |
3234 | goto out; | |
4796f457 BF |
3235 | if (exp->ex_nflavors) { |
3236 | flavs = exp->ex_flavors; | |
3237 | nflavs = exp->ex_nflavors; | |
3238 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
3239 | flavs = def_flavs; | |
3240 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
3241 | nflavs = 2; | |
3242 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
3243 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
3244 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
3245 | nflavs = 1; | |
3246 | flavs[0].pseudoflavor | |
3247 | = svcauth_gss_flavor(exp->ex_client); | |
3248 | } else { | |
3249 | nflavs = 1; | |
3250 | flavs[0].pseudoflavor | |
3251 | = exp->ex_client->flavour->flavour; | |
3252 | } | |
3253 | } | |
3254 | ||
676e4ebd | 3255 | supported = 0; |
dcb488a3 | 3256 | RESERVE_SPACE(4); |
676e4ebd | 3257 | flavorsp = p++; /* to be backfilled later */ |
dcb488a3 | 3258 | ADJUST_ARGS(); |
676e4ebd | 3259 | |
4796f457 | 3260 | for (i = 0; i < nflavs; i++) { |
676e4ebd | 3261 | rpc_authflavor_t pf = flavs[i].pseudoflavor; |
a77c806f | 3262 | struct rpcsec_gss_info info; |
dcb488a3 | 3263 | |
676e4ebd CL |
3264 | if (rpcauth_get_gssinfo(pf, &info) == 0) { |
3265 | supported++; | |
ed9411a0 | 3266 | RESERVE_SPACE(4 + 4 + info.oid.len + 4 + 4); |
dcb488a3 | 3267 | WRITE32(RPC_AUTH_GSS); |
a77c806f CL |
3268 | WRITE32(info.oid.len); |
3269 | WRITEMEM(info.oid.data, info.oid.len); | |
a77c806f | 3270 | WRITE32(info.qop); |
a77c806f | 3271 | WRITE32(info.service); |
dcb488a3 | 3272 | ADJUST_ARGS(); |
676e4ebd CL |
3273 | } else if (pf < RPC_AUTH_MAXFLAVOR) { |
3274 | supported++; | |
dcb488a3 | 3275 | RESERVE_SPACE(4); |
676e4ebd | 3276 | WRITE32(pf); |
dcb488a3 | 3277 | ADJUST_ARGS(); |
676e4ebd CL |
3278 | } else { |
3279 | if (report) | |
3280 | pr_warn("NFS: SECINFO: security flavor %u " | |
3281 | "is not supported\n", pf); | |
dcb488a3 AA |
3282 | } |
3283 | } | |
a77c806f | 3284 | |
676e4ebd CL |
3285 | if (nflavs != supported) |
3286 | report = false; | |
3287 | *flavorsp = htonl(supported); | |
3288 | ||
dcb488a3 AA |
3289 | out: |
3290 | if (exp) | |
3291 | exp_put(exp); | |
695e12f8 | 3292 | return nfserr; |
dcb488a3 AA |
3293 | } |
3294 | ||
22b6dee8 MJ |
3295 | static __be32 |
3296 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3297 | struct nfsd4_secinfo *secinfo) | |
3298 | { | |
3299 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->si_exp); | |
3300 | } | |
3301 | ||
3302 | static __be32 | |
3303 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3304 | struct nfsd4_secinfo_no_name *secinfo) | |
3305 | { | |
3306 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->sin_exp); | |
3307 | } | |
3308 | ||
1da177e4 LT |
3309 | /* |
3310 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
3311 | * regardless of the error status. | |
3312 | */ | |
695e12f8 | 3313 | static __be32 |
b37ad28b | 3314 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 3315 | { |
bc749ca4 | 3316 | __be32 *p; |
1da177e4 | 3317 | |
18032ca0 | 3318 | RESERVE_SPACE(16); |
1da177e4 | 3319 | if (nfserr) { |
18032ca0 DQ |
3320 | WRITE32(3); |
3321 | WRITE32(0); | |
1da177e4 LT |
3322 | WRITE32(0); |
3323 | WRITE32(0); | |
3324 | } | |
3325 | else { | |
18032ca0 | 3326 | WRITE32(3); |
1da177e4 LT |
3327 | WRITE32(setattr->sa_bmval[0]); |
3328 | WRITE32(setattr->sa_bmval[1]); | |
18032ca0 | 3329 | WRITE32(setattr->sa_bmval[2]); |
1da177e4 LT |
3330 | } |
3331 | ADJUST_ARGS(); | |
695e12f8 | 3332 | return nfserr; |
1da177e4 LT |
3333 | } |
3334 | ||
695e12f8 | 3335 | static __be32 |
b37ad28b | 3336 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 3337 | { |
bc749ca4 | 3338 | __be32 *p; |
1da177e4 LT |
3339 | |
3340 | if (!nfserr) { | |
ab4684d1 | 3341 | RESERVE_SPACE(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 3342 | WRITEMEM(&scd->se_clientid, 8); |
ab4684d1 | 3343 | WRITEMEM(&scd->se_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
3344 | ADJUST_ARGS(); |
3345 | } | |
3346 | else if (nfserr == nfserr_clid_inuse) { | |
3347 | RESERVE_SPACE(8); | |
3348 | WRITE32(0); | |
3349 | WRITE32(0); | |
3350 | ADJUST_ARGS(); | |
3351 | } | |
695e12f8 | 3352 | return nfserr; |
1da177e4 LT |
3353 | } |
3354 | ||
695e12f8 | 3355 | static __be32 |
b37ad28b | 3356 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 3357 | { |
bc749ca4 | 3358 | __be32 *p; |
1da177e4 LT |
3359 | |
3360 | if (!nfserr) { | |
3361 | RESERVE_SPACE(16); | |
3362 | WRITE32(write->wr_bytes_written); | |
3363 | WRITE32(write->wr_how_written); | |
ab4684d1 | 3364 | WRITEMEM(write->wr_verifier.data, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
3365 | ADJUST_ARGS(); |
3366 | } | |
695e12f8 | 3367 | return nfserr; |
1da177e4 LT |
3368 | } |
3369 | ||
57266a6e BF |
3370 | static const u32 nfs4_minimal_spo_must_enforce[2] = { |
3371 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
3372 | 1 << (OP_EXCHANGE_ID - 32) | | |
3373 | 1 << (OP_CREATE_SESSION - 32) | | |
3374 | 1 << (OP_DESTROY_SESSION - 32) | | |
3375 | 1 << (OP_DESTROY_CLIENTID - 32) | |
3376 | }; | |
3377 | ||
2db134eb | 3378 | static __be32 |
57b7b43b | 3379 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3380 | struct nfsd4_exchange_id *exid) |
3381 | { | |
bc749ca4 | 3382 | __be32 *p; |
0733d213 AA |
3383 | char *major_id; |
3384 | char *server_scope; | |
3385 | int major_id_sz; | |
3386 | int server_scope_sz; | |
3387 | uint64_t minor_id = 0; | |
3388 | ||
3389 | if (nfserr) | |
3390 | return nfserr; | |
3391 | ||
3392 | major_id = utsname()->nodename; | |
3393 | major_id_sz = strlen(major_id); | |
3394 | server_scope = utsname()->nodename; | |
3395 | server_scope_sz = strlen(server_scope); | |
3396 | ||
3397 | RESERVE_SPACE( | |
3398 | 8 /* eir_clientid */ + | |
3399 | 4 /* eir_sequenceid */ + | |
3400 | 4 /* eir_flags */ + | |
58cd57bf WAA |
3401 | 4 /* spr_how */ + |
3402 | 8 /* spo_must_enforce, spo_must_allow */ + | |
0733d213 AA |
3403 | 8 /* so_minor_id */ + |
3404 | 4 /* so_major_id.len */ + | |
3405 | (XDR_QUADLEN(major_id_sz) * 4) + | |
3406 | 4 /* eir_server_scope.len */ + | |
3407 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
3408 | 4 /* eir_server_impl_id.count (0) */); | |
3409 | ||
3410 | WRITEMEM(&exid->clientid, 8); | |
3411 | WRITE32(exid->seqid); | |
3412 | WRITE32(exid->flags); | |
3413 | ||
0733d213 | 3414 | WRITE32(exid->spa_how); |
57266a6e BF |
3415 | switch (exid->spa_how) { |
3416 | case SP4_NONE: | |
3417 | break; | |
3418 | case SP4_MACH_CRED: | |
3419 | /* spo_must_enforce bitmap: */ | |
3420 | WRITE32(2); | |
3421 | WRITE32(nfs4_minimal_spo_must_enforce[0]); | |
3422 | WRITE32(nfs4_minimal_spo_must_enforce[1]); | |
3423 | /* empty spo_must_allow bitmap: */ | |
3424 | WRITE32(0); | |
3425 | break; | |
3426 | default: | |
3427 | WARN_ON_ONCE(1); | |
3428 | } | |
0733d213 AA |
3429 | |
3430 | /* The server_owner struct */ | |
3431 | WRITE64(minor_id); /* Minor id */ | |
3432 | /* major id */ | |
3433 | WRITE32(major_id_sz); | |
3434 | WRITEMEM(major_id, major_id_sz); | |
3435 | ||
3436 | /* Server scope */ | |
3437 | WRITE32(server_scope_sz); | |
3438 | WRITEMEM(server_scope, server_scope_sz); | |
3439 | ||
3440 | /* Implementation id */ | |
3441 | WRITE32(0); /* zero length nfs_impl_id4 array */ | |
3442 | ADJUST_ARGS(); | |
3443 | return 0; | |
2db134eb AA |
3444 | } |
3445 | ||
3446 | static __be32 | |
57b7b43b | 3447 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3448 | struct nfsd4_create_session *sess) |
3449 | { | |
bc749ca4 | 3450 | __be32 *p; |
ec6b5d7b AA |
3451 | |
3452 | if (nfserr) | |
3453 | return nfserr; | |
3454 | ||
3455 | RESERVE_SPACE(24); | |
3456 | WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3457 | WRITE32(sess->seqid); | |
3458 | WRITE32(sess->flags); | |
3459 | ADJUST_ARGS(); | |
3460 | ||
3461 | RESERVE_SPACE(28); | |
3462 | WRITE32(0); /* headerpadsz */ | |
3463 | WRITE32(sess->fore_channel.maxreq_sz); | |
3464 | WRITE32(sess->fore_channel.maxresp_sz); | |
3465 | WRITE32(sess->fore_channel.maxresp_cached); | |
3466 | WRITE32(sess->fore_channel.maxops); | |
3467 | WRITE32(sess->fore_channel.maxreqs); | |
3468 | WRITE32(sess->fore_channel.nr_rdma_attrs); | |
3469 | ADJUST_ARGS(); | |
3470 | ||
3471 | if (sess->fore_channel.nr_rdma_attrs) { | |
3472 | RESERVE_SPACE(4); | |
3473 | WRITE32(sess->fore_channel.rdma_attrs); | |
3474 | ADJUST_ARGS(); | |
3475 | } | |
3476 | ||
3477 | RESERVE_SPACE(28); | |
3478 | WRITE32(0); /* headerpadsz */ | |
3479 | WRITE32(sess->back_channel.maxreq_sz); | |
3480 | WRITE32(sess->back_channel.maxresp_sz); | |
3481 | WRITE32(sess->back_channel.maxresp_cached); | |
3482 | WRITE32(sess->back_channel.maxops); | |
3483 | WRITE32(sess->back_channel.maxreqs); | |
3484 | WRITE32(sess->back_channel.nr_rdma_attrs); | |
3485 | ADJUST_ARGS(); | |
3486 | ||
3487 | if (sess->back_channel.nr_rdma_attrs) { | |
3488 | RESERVE_SPACE(4); | |
3489 | WRITE32(sess->back_channel.rdma_attrs); | |
3490 | ADJUST_ARGS(); | |
3491 | } | |
3492 | return 0; | |
2db134eb AA |
3493 | } |
3494 | ||
3495 | static __be32 | |
57b7b43b | 3496 | nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3497 | struct nfsd4_destroy_session *destroy_session) |
3498 | { | |
2db134eb AA |
3499 | return nfserr; |
3500 | } | |
3501 | ||
e1ca12df | 3502 | static __be32 |
d1829b38 | 3503 | nfsd4_encode_free_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
e1ca12df BS |
3504 | struct nfsd4_free_stateid *free_stateid) |
3505 | { | |
3506 | __be32 *p; | |
3507 | ||
3508 | if (nfserr) | |
3509 | return nfserr; | |
3510 | ||
3511 | RESERVE_SPACE(4); | |
d1829b38 | 3512 | *p++ = nfserr; |
e1ca12df BS |
3513 | ADJUST_ARGS(); |
3514 | return nfserr; | |
3515 | } | |
3516 | ||
c47d832b | 3517 | static __be32 |
57b7b43b | 3518 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3519 | struct nfsd4_sequence *seq) |
3520 | { | |
bc749ca4 | 3521 | __be32 *p; |
b85d4c01 BH |
3522 | |
3523 | if (nfserr) | |
3524 | return nfserr; | |
3525 | ||
3526 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20); | |
3527 | WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3528 | WRITE32(seq->seqid); | |
3529 | WRITE32(seq->slotid); | |
b7d7ca35 BF |
3530 | /* Note slotid's are numbered from zero: */ |
3531 | WRITE32(seq->maxslots - 1); /* sr_highest_slotid */ | |
3532 | WRITE32(seq->maxslots - 1); /* sr_target_highest_slotid */ | |
0d7bb719 | 3533 | WRITE32(seq->status_flags); |
b85d4c01 BH |
3534 | |
3535 | ADJUST_ARGS(); | |
557ce264 | 3536 | resp->cstate.datap = p; /* DRC cache data pointer */ |
b85d4c01 | 3537 | return 0; |
2db134eb AA |
3538 | } |
3539 | ||
2355c596 | 3540 | static __be32 |
57b7b43b | 3541 | nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
17456804 BS |
3542 | struct nfsd4_test_stateid *test_stateid) |
3543 | { | |
03cfb420 | 3544 | struct nfsd4_test_stateid_id *stateid, *next; |
17456804 | 3545 | __be32 *p; |
17456804 | 3546 | |
03cfb420 | 3547 | RESERVE_SPACE(4 + (4 * test_stateid->ts_num_ids)); |
17456804 | 3548 | *p++ = htonl(test_stateid->ts_num_ids); |
17456804 | 3549 | |
03cfb420 | 3550 | list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) { |
02f5fde5 | 3551 | *p++ = stateid->ts_id_status; |
17456804 | 3552 | } |
17456804 | 3553 | |
03cfb420 | 3554 | ADJUST_ARGS(); |
17456804 BS |
3555 | return nfserr; |
3556 | } | |
3557 | ||
695e12f8 BH |
3558 | static __be32 |
3559 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
3560 | { | |
3561 | return nfserr; | |
3562 | } | |
3563 | ||
3564 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
3565 | ||
2db134eb AA |
3566 | /* |
3567 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
3568 | * since we don't need to filter out obsolete ops as this is | |
3569 | * done in the decoding phase. | |
3570 | */ | |
695e12f8 | 3571 | static nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
3572 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
3573 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
3574 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
3575 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
3576 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
3577 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
3578 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
3579 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
3580 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
3581 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
3582 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
3583 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
3584 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
3585 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
3586 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3587 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 3588 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
3589 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
3590 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
3591 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3592 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3593 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3594 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
3595 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
3596 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
3597 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
3598 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
3599 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
3600 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3601 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3602 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
3603 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
3604 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
3605 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
3606 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3607 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
3608 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3609 | |
3610 | /* NFSv4.1 operations */ | |
3611 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
1d1bc8f2 | 3612 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
2db134eb AA |
3613 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
3614 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
3615 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session, | |
e1ca12df | 3616 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_free_stateid, |
2db134eb AA |
3617 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3618 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, | |
3619 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
3620 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
3621 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
3622 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
22b6dee8 | 3623 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
2db134eb AA |
3624 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
3625 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
17456804 | 3626 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, |
2db134eb AA |
3627 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3628 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
3629 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
695e12f8 BH |
3630 | }; |
3631 | ||
496c262c AA |
3632 | /* |
3633 | * Calculate the total amount of memory that the compound response has taken | |
58e7b33a | 3634 | * after encoding the current operation with pad. |
496c262c | 3635 | * |
58e7b33a MJ |
3636 | * pad: if operation is non-idempotent, pad was calculate by op_rsize_bop() |
3637 | * which was specified at nfsd4_operation, else pad is zero. | |
496c262c | 3638 | * |
58e7b33a | 3639 | * Compare this length to the session se_fmaxresp_sz and se_fmaxresp_cached. |
496c262c AA |
3640 | * |
3641 | * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so | |
3642 | * will be at least a page and will therefore hold the xdr_buf head. | |
3643 | */ | |
57b7b43b | 3644 | __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad) |
496c262c | 3645 | { |
496c262c | 3646 | struct xdr_buf *xb = &resp->rqstp->rq_res; |
496c262c AA |
3647 | struct nfsd4_session *session = NULL; |
3648 | struct nfsd4_slot *slot = resp->cstate.slot; | |
58e7b33a | 3649 | u32 length, tlen = 0; |
496c262c AA |
3650 | |
3651 | if (!nfsd4_has_session(&resp->cstate)) | |
58e7b33a | 3652 | return 0; |
496c262c AA |
3653 | |
3654 | session = resp->cstate.session; | |
58e7b33a MJ |
3655 | if (session == NULL) |
3656 | return 0; | |
496c262c AA |
3657 | |
3658 | if (xb->page_len == 0) { | |
3659 | length = (char *)resp->p - (char *)xb->head[0].iov_base + pad; | |
3660 | } else { | |
3661 | if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0) | |
3662 | tlen = (char *)resp->p - (char *)xb->tail[0].iov_base; | |
3663 | ||
3664 | length = xb->head[0].iov_len + xb->page_len + tlen + pad; | |
3665 | } | |
3666 | dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__, | |
3667 | length, xb->page_len, tlen, pad); | |
3668 | ||
58e7b33a MJ |
3669 | if (length > session->se_fchannel.maxresp_sz) |
3670 | return nfserr_rep_too_big; | |
3671 | ||
73e79482 | 3672 | if ((slot->sl_flags & NFSD4_SLOT_CACHETHIS) && |
58e7b33a | 3673 | length > session->se_fchannel.maxresp_cached) |
496c262c | 3674 | return nfserr_rep_too_big_to_cache; |
58e7b33a MJ |
3675 | |
3676 | return 0; | |
496c262c AA |
3677 | } |
3678 | ||
1da177e4 LT |
3679 | void |
3680 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3681 | { | |
9411b1d4 | 3682 | struct nfs4_stateowner *so = resp->cstate.replay_owner; |
2ebbc012 | 3683 | __be32 *statp; |
bc749ca4 | 3684 | __be32 *p; |
1da177e4 LT |
3685 | |
3686 | RESERVE_SPACE(8); | |
3687 | WRITE32(op->opnum); | |
3688 | statp = p++; /* to be backfilled at the end */ | |
3689 | ADJUST_ARGS(); | |
3690 | ||
695e12f8 BH |
3691 | if (op->opnum == OP_ILLEGAL) |
3692 | goto status; | |
3693 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || | |
3694 | !nfsd4_enc_ops[op->opnum]); | |
3695 | op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u); | |
496c262c | 3696 | /* nfsd4_check_drc_limit guarantees enough room for error status */ |
58e7b33a MJ |
3697 | if (!op->status) |
3698 | op->status = nfsd4_check_resp_size(resp, 0); | |
9411b1d4 BF |
3699 | if (so) { |
3700 | so->so_replay.rp_status = op->status; | |
3701 | so->so_replay.rp_buflen = (char *)resp->p - (char *)(statp+1); | |
3702 | memcpy(so->so_replay.rp_buf, statp+1, so->so_replay.rp_buflen); | |
3703 | } | |
695e12f8 | 3704 | status: |
1da177e4 LT |
3705 | /* |
3706 | * Note: We write the status directly, instead of using WRITE32(), | |
3707 | * since it is already in network byte order. | |
3708 | */ | |
3709 | *statp = op->status; | |
3710 | } | |
3711 | ||
3712 | /* | |
3713 | * Encode the reply stored in the stateowner reply cache | |
3714 | * | |
3715 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
3716 | * previously sent already encoded operation. | |
3717 | * | |
3718 | * called with nfs4_lock_state() held | |
3719 | */ | |
3720 | void | |
3721 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3722 | { | |
bc749ca4 | 3723 | __be32 *p; |
1da177e4 LT |
3724 | struct nfs4_replay *rp = op->replay; |
3725 | ||
3726 | BUG_ON(!rp); | |
3727 | ||
3728 | RESERVE_SPACE(8); | |
3729 | WRITE32(op->opnum); | |
3730 | *p++ = rp->rp_status; /* already xdr'ed */ | |
3731 | ADJUST_ARGS(); | |
3732 | ||
3733 | RESERVE_SPACE(rp->rp_buflen); | |
3734 | WRITEMEM(rp->rp_buf, rp->rp_buflen); | |
3735 | ADJUST_ARGS(); | |
3736 | } | |
3737 | ||
1da177e4 | 3738 | int |
2ebbc012 | 3739 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
3740 | { |
3741 | return xdr_ressize_check(rqstp, p); | |
3742 | } | |
3743 | ||
3e98abff | 3744 | int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp) |
1da177e4 | 3745 | { |
3e98abff BF |
3746 | struct svc_rqst *rqstp = rq; |
3747 | struct nfsd4_compoundargs *args = rqstp->rq_argp; | |
3748 | ||
1da177e4 LT |
3749 | if (args->ops != args->iops) { |
3750 | kfree(args->ops); | |
3751 | args->ops = args->iops; | |
3752 | } | |
f99d49ad JJ |
3753 | kfree(args->tmpp); |
3754 | args->tmpp = NULL; | |
1da177e4 LT |
3755 | while (args->to_free) { |
3756 | struct tmpbuf *tb = args->to_free; | |
3757 | args->to_free = tb->next; | |
3758 | tb->release(tb->buf); | |
3759 | kfree(tb); | |
3760 | } | |
3e98abff | 3761 | return 1; |
1da177e4 LT |
3762 | } |
3763 | ||
3764 | int | |
2ebbc012 | 3765 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 3766 | { |
1da177e4 LT |
3767 | args->p = p; |
3768 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
3769 | args->pagelist = rqstp->rq_arg.pages; | |
3770 | args->pagelen = rqstp->rq_arg.page_len; | |
3771 | args->tmpp = NULL; | |
3772 | args->to_free = NULL; | |
3773 | args->ops = args->iops; | |
3774 | args->rqstp = rqstp; | |
3775 | ||
3e98abff | 3776 | return !nfsd4_decode_compound(args); |
1da177e4 LT |
3777 | } |
3778 | ||
3779 | int | |
2ebbc012 | 3780 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
3781 | { |
3782 | /* | |
3783 | * All that remains is to write the tag and operation count... | |
3784 | */ | |
557ce264 | 3785 | struct nfsd4_compound_state *cs = &resp->cstate; |
1da177e4 LT |
3786 | struct kvec *iov; |
3787 | p = resp->tagp; | |
3788 | *p++ = htonl(resp->taglen); | |
3789 | memcpy(p, resp->tag, resp->taglen); | |
3790 | p += XDR_QUADLEN(resp->taglen); | |
3791 | *p++ = htonl(resp->opcnt); | |
3792 | ||
3793 | if (rqstp->rq_res.page_len) | |
3794 | iov = &rqstp->rq_res.tail[0]; | |
3795 | else | |
3796 | iov = &rqstp->rq_res.head[0]; | |
3797 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; | |
3798 | BUG_ON(iov->iov_len > PAGE_SIZE); | |
26c0c75e | 3799 | if (nfsd4_has_session(cs)) { |
f0f51f5c BF |
3800 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
3801 | struct nfs4_client *clp = cs->session->se_client; | |
26c0c75e BF |
3802 | if (cs->status != nfserr_replay_cache) { |
3803 | nfsd4_store_cache_entry(resp); | |
73e79482 | 3804 | cs->slot->sl_flags &= ~NFSD4_SLOT_INUSE; |
26c0c75e | 3805 | } |
d7682988 | 3806 | /* Renew the clientid on success and on replay */ |
f0f51f5c | 3807 | spin_lock(&nn->client_lock); |
221a6876 | 3808 | nfsd4_put_session(cs->session); |
f0f51f5c BF |
3809 | spin_unlock(&nn->client_lock); |
3810 | put_client_renew(clp); | |
da3846a2 | 3811 | } |
1da177e4 LT |
3812 | return 1; |
3813 | } | |
3814 | ||
3815 | /* | |
3816 | * Local variables: | |
3817 | * c-basic-offset: 8 | |
3818 | * End: | |
3819 | */ |