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) | |
1da177e4 LT |
106 | #define READMEM(x,nbytes) do { \ |
107 | x = (char *)p; \ | |
108 | p += XDR_QUADLEN(nbytes); \ | |
109 | } while (0) | |
110 | #define SAVEMEM(x,nbytes) do { \ | |
111 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
112 | savemem(argp, p, nbytes) : \ | |
113 | (char *)p)) { \ | |
817cb9d4 CL |
114 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
115 | __FILE__, __LINE__); \ | |
1da177e4 LT |
116 | goto xdr_error; \ |
117 | } \ | |
118 | p += XDR_QUADLEN(nbytes); \ | |
119 | } while (0) | |
120 | #define COPYMEM(x,nbytes) do { \ | |
121 | memcpy((x), p, nbytes); \ | |
122 | p += XDR_QUADLEN(nbytes); \ | |
123 | } while (0) | |
124 | ||
125 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ | |
126 | #define READ_BUF(nbytes) do { \ | |
127 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ | |
128 | p = argp->p; \ | |
129 | argp->p += XDR_QUADLEN(nbytes); \ | |
130 | } else if (!(p = read_buf(argp, nbytes))) { \ | |
817cb9d4 CL |
131 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
132 | __FILE__, __LINE__); \ | |
1da177e4 LT |
133 | goto xdr_error; \ |
134 | } \ | |
135 | } while (0) | |
136 | ||
590b7431 BF |
137 | static void next_decode_page(struct nfsd4_compoundargs *argp) |
138 | { | |
590b7431 | 139 | argp->p = page_address(argp->pagelist[0]); |
365da4ad | 140 | argp->pagelist++; |
590b7431 BF |
141 | if (argp->pagelen < PAGE_SIZE) { |
142 | argp->end = argp->p + (argp->pagelen>>2); | |
143 | argp->pagelen = 0; | |
144 | } else { | |
145 | argp->end = argp->p + (PAGE_SIZE>>2); | |
146 | argp->pagelen -= PAGE_SIZE; | |
147 | } | |
148 | } | |
149 | ||
ca2a05aa | 150 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
1da177e4 LT |
151 | { |
152 | /* We want more bytes than seem to be available. | |
153 | * Maybe we need a new page, maybe we have just run out | |
154 | */ | |
ca2a05aa | 155 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
2ebbc012 | 156 | __be32 *p; |
1da177e4 LT |
157 | if (avail + argp->pagelen < nbytes) |
158 | return NULL; | |
159 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ | |
160 | return NULL; | |
161 | /* ok, we can do it with the current plus the next page */ | |
162 | if (nbytes <= sizeof(argp->tmp)) | |
163 | p = argp->tmp; | |
164 | else { | |
f99d49ad | 165 | kfree(argp->tmpp); |
1da177e4 LT |
166 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
167 | if (!p) | |
168 | return NULL; | |
169 | ||
170 | } | |
ca2a05aa BF |
171 | /* |
172 | * The following memcpy is safe because read_buf is always | |
173 | * called with nbytes > avail, and the two cases above both | |
174 | * guarantee p points to at least nbytes bytes. | |
175 | */ | |
1da177e4 | 176 | memcpy(p, argp->p, avail); |
590b7431 | 177 | next_decode_page(argp); |
1da177e4 LT |
178 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); |
179 | argp->p += XDR_QUADLEN(nbytes - avail); | |
180 | return p; | |
181 | } | |
182 | ||
60adfc50 AA |
183 | static int zero_clientid(clientid_t *clid) |
184 | { | |
185 | return (clid->cl_boot == 0) && (clid->cl_id == 0); | |
186 | } | |
187 | ||
2d8498db CH |
188 | /** |
189 | * defer_free - mark an allocation as deferred freed | |
190 | * @argp: NFSv4 compound argument structure to be freed with | |
191 | * @release: release callback to free @p, typically kfree() | |
192 | * @p: pointer to be freed | |
193 | * | |
194 | * Marks @p to be freed when processing the compound operation | |
195 | * described in @argp finishes. | |
196 | */ | |
1da177e4 LT |
197 | static int |
198 | defer_free(struct nfsd4_compoundargs *argp, | |
199 | void (*release)(const void *), void *p) | |
200 | { | |
201 | struct tmpbuf *tb; | |
202 | ||
203 | tb = kmalloc(sizeof(*tb), GFP_KERNEL); | |
204 | if (!tb) | |
205 | return -ENOMEM; | |
206 | tb->buf = p; | |
207 | tb->release = release; | |
208 | tb->next = argp->to_free; | |
209 | argp->to_free = tb; | |
210 | return 0; | |
211 | } | |
212 | ||
2d8498db CH |
213 | /** |
214 | * savemem - duplicate a chunk of memory for later processing | |
215 | * @argp: NFSv4 compound argument structure to be freed with | |
216 | * @p: pointer to be duplicated | |
217 | * @nbytes: length to be duplicated | |
218 | * | |
219 | * Returns a pointer to a copy of @nbytes bytes of memory at @p | |
220 | * that are preserved until processing of the NFSv4 compound | |
221 | * operation described by @argp finishes. | |
222 | */ | |
2ebbc012 | 223 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
1da177e4 | 224 | { |
1da177e4 | 225 | if (p == argp->tmp) { |
67114fe6 | 226 | p = kmemdup(argp->tmp, nbytes, GFP_KERNEL); |
a4db5fe5 BF |
227 | if (!p) |
228 | return NULL; | |
1da177e4 | 229 | } else { |
73dff8be | 230 | BUG_ON(p != argp->tmpp); |
1da177e4 LT |
231 | argp->tmpp = NULL; |
232 | } | |
233 | if (defer_free(argp, kfree, p)) { | |
a4db5fe5 | 234 | kfree(p); |
1da177e4 LT |
235 | return NULL; |
236 | } else | |
237 | return (char *)p; | |
238 | } | |
239 | ||
b37ad28b | 240 | static __be32 |
1da177e4 LT |
241 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
242 | { | |
243 | u32 bmlen; | |
244 | DECODE_HEAD; | |
245 | ||
246 | bmval[0] = 0; | |
247 | bmval[1] = 0; | |
7e705706 | 248 | bmval[2] = 0; |
1da177e4 LT |
249 | |
250 | READ_BUF(4); | |
251 | READ32(bmlen); | |
252 | if (bmlen > 1000) | |
253 | goto xdr_error; | |
254 | ||
255 | READ_BUF(bmlen << 2); | |
256 | if (bmlen > 0) | |
257 | READ32(bmval[0]); | |
258 | if (bmlen > 1) | |
259 | READ32(bmval[1]); | |
7e705706 AA |
260 | if (bmlen > 2) |
261 | READ32(bmval[2]); | |
1da177e4 LT |
262 | |
263 | DECODE_TAIL; | |
264 | } | |
265 | ||
b37ad28b | 266 | static __be32 |
3c8e0316 | 267 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, |
18032ca0 DQ |
268 | struct iattr *iattr, struct nfs4_acl **acl, |
269 | struct xdr_netobj *label) | |
1da177e4 LT |
270 | { |
271 | int expected_len, len = 0; | |
272 | u32 dummy32; | |
273 | char *buf; | |
274 | ||
275 | DECODE_HEAD; | |
276 | iattr->ia_valid = 0; | |
277 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
278 | return status; | |
279 | ||
1da177e4 LT |
280 | READ_BUF(4); |
281 | READ32(expected_len); | |
282 | ||
283 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
284 | READ_BUF(8); | |
285 | len += 8; | |
286 | READ64(iattr->ia_size); | |
287 | iattr->ia_valid |= ATTR_SIZE; | |
288 | } | |
289 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
64a817cf | 290 | u32 nace; |
28e05dd8 | 291 | struct nfs4_ace *ace; |
1da177e4 LT |
292 | |
293 | READ_BUF(4); len += 4; | |
294 | READ32(nace); | |
295 | ||
28e05dd8 BF |
296 | if (nace > NFS4_ACL_MAX) |
297 | return nfserr_resource; | |
298 | ||
299 | *acl = nfs4_acl_new(nace); | |
eba1c99c KM |
300 | if (*acl == NULL) |
301 | return nfserr_jukebox; | |
302 | ||
28e05dd8 | 303 | defer_free(argp, kfree, *acl); |
1da177e4 | 304 | |
28e05dd8 BF |
305 | (*acl)->naces = nace; |
306 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { | |
1da177e4 | 307 | READ_BUF(16); len += 16; |
28e05dd8 BF |
308 | READ32(ace->type); |
309 | READ32(ace->flag); | |
310 | READ32(ace->access_mask); | |
1da177e4 LT |
311 | READ32(dummy32); |
312 | READ_BUF(dummy32); | |
313 | len += XDR_QUADLEN(dummy32) << 2; | |
314 | READMEM(buf, dummy32); | |
28e05dd8 | 315 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
3c726023 | 316 | status = nfs_ok; |
28e05dd8 | 317 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ab8e4aee | 318 | ; |
28e05dd8 | 319 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
3c726023 | 320 | status = nfsd_map_name_to_gid(argp->rqstp, |
ab8e4aee | 321 | buf, dummy32, &ace->who_gid); |
1da177e4 | 322 | else |
3c726023 | 323 | status = nfsd_map_name_to_uid(argp->rqstp, |
ab8e4aee | 324 | buf, dummy32, &ace->who_uid); |
3c726023 BF |
325 | if (status) |
326 | return status; | |
1da177e4 LT |
327 | } |
328 | } else | |
329 | *acl = NULL; | |
330 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
331 | READ_BUF(4); | |
332 | len += 4; | |
333 | READ32(iattr->ia_mode); | |
334 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); | |
335 | iattr->ia_valid |= ATTR_MODE; | |
336 | } | |
337 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
338 | READ_BUF(4); | |
339 | len += 4; | |
340 | READ32(dummy32); | |
341 | READ_BUF(dummy32); | |
342 | len += (XDR_QUADLEN(dummy32) << 2); | |
343 | READMEM(buf, dummy32); | |
47c85291 N |
344 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
345 | return status; | |
1da177e4 LT |
346 | iattr->ia_valid |= ATTR_UID; |
347 | } | |
348 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
349 | READ_BUF(4); | |
350 | len += 4; | |
351 | READ32(dummy32); | |
352 | READ_BUF(dummy32); | |
353 | len += (XDR_QUADLEN(dummy32) << 2); | |
354 | READMEM(buf, dummy32); | |
47c85291 N |
355 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
356 | return status; | |
1da177e4 LT |
357 | iattr->ia_valid |= ATTR_GID; |
358 | } | |
359 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
360 | READ_BUF(4); | |
361 | len += 4; | |
362 | READ32(dummy32); | |
363 | switch (dummy32) { | |
364 | case NFS4_SET_TO_CLIENT_TIME: | |
365 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
366 | all 32 bits of 'nseconds'. */ | |
367 | READ_BUF(12); | |
368 | len += 12; | |
bf8d9097 | 369 | READ64(iattr->ia_atime.tv_sec); |
1da177e4 LT |
370 | READ32(iattr->ia_atime.tv_nsec); |
371 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) | |
372 | return nfserr_inval; | |
373 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); | |
374 | break; | |
375 | case NFS4_SET_TO_SERVER_TIME: | |
376 | iattr->ia_valid |= ATTR_ATIME; | |
377 | break; | |
378 | default: | |
379 | goto xdr_error; | |
380 | } | |
381 | } | |
1da177e4 LT |
382 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
383 | READ_BUF(4); | |
384 | len += 4; | |
385 | READ32(dummy32); | |
386 | switch (dummy32) { | |
387 | case NFS4_SET_TO_CLIENT_TIME: | |
388 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
389 | all 32 bits of 'nseconds'. */ | |
390 | READ_BUF(12); | |
391 | len += 12; | |
bf8d9097 | 392 | READ64(iattr->ia_mtime.tv_sec); |
1da177e4 LT |
393 | READ32(iattr->ia_mtime.tv_nsec); |
394 | if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) | |
395 | return nfserr_inval; | |
396 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); | |
397 | break; | |
398 | case NFS4_SET_TO_SERVER_TIME: | |
399 | iattr->ia_valid |= ATTR_MTIME; | |
400 | break; | |
401 | default: | |
402 | goto xdr_error; | |
403 | } | |
404 | } | |
18032ca0 DQ |
405 | |
406 | label->len = 0; | |
407 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL | |
408 | if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) { | |
409 | READ_BUF(4); | |
410 | len += 4; | |
411 | READ32(dummy32); /* lfs: we don't use it */ | |
412 | READ_BUF(4); | |
413 | len += 4; | |
414 | READ32(dummy32); /* pi: we don't use it either */ | |
415 | READ_BUF(4); | |
416 | len += 4; | |
417 | READ32(dummy32); | |
418 | READ_BUF(dummy32); | |
419 | if (dummy32 > NFSD4_MAX_SEC_LABEL_LEN) | |
420 | return nfserr_badlabel; | |
421 | len += (XDR_QUADLEN(dummy32) << 2); | |
422 | READMEM(buf, dummy32); | |
423 | label->data = kzalloc(dummy32 + 1, GFP_KERNEL); | |
424 | if (!label->data) | |
425 | return nfserr_jukebox; | |
3378b7f4 | 426 | label->len = dummy32; |
18032ca0 DQ |
427 | defer_free(argp, kfree, label->data); |
428 | memcpy(label->data, buf, dummy32); | |
429 | } | |
430 | #endif | |
431 | ||
3c8e0316 YZ |
432 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
433 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 | |
434 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) | |
435 | READ_BUF(expected_len - len); | |
436 | else if (len != expected_len) | |
1da177e4 LT |
437 | goto xdr_error; |
438 | ||
439 | DECODE_TAIL; | |
1da177e4 LT |
440 | } |
441 | ||
e31a1b66 BH |
442 | static __be32 |
443 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
444 | { | |
445 | DECODE_HEAD; | |
446 | ||
447 | READ_BUF(sizeof(stateid_t)); | |
448 | READ32(sid->si_generation); | |
449 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
450 | ||
451 | DECODE_TAIL; | |
452 | } | |
453 | ||
b37ad28b | 454 | static __be32 |
1da177e4 LT |
455 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
456 | { | |
457 | DECODE_HEAD; | |
458 | ||
459 | READ_BUF(4); | |
460 | READ32(access->ac_req_access); | |
461 | ||
462 | DECODE_TAIL; | |
463 | } | |
464 | ||
acb2887e BF |
465 | static __be32 nfsd4_decode_cb_sec(struct nfsd4_compoundargs *argp, struct nfsd4_cb_sec *cbs) |
466 | { | |
467 | DECODE_HEAD; | |
12fc3e92 | 468 | u32 dummy, uid, gid; |
acb2887e BF |
469 | char *machine_name; |
470 | int i; | |
471 | int nr_secflavs; | |
472 | ||
473 | /* callback_sec_params4 */ | |
474 | READ_BUF(4); | |
475 | READ32(nr_secflavs); | |
57569a70 BF |
476 | if (nr_secflavs) |
477 | cbs->flavor = (u32)(-1); | |
478 | else | |
479 | /* Is this legal? Be generous, take it to mean AUTH_NONE: */ | |
480 | cbs->flavor = 0; | |
acb2887e BF |
481 | for (i = 0; i < nr_secflavs; ++i) { |
482 | READ_BUF(4); | |
483 | READ32(dummy); | |
484 | switch (dummy) { | |
485 | case RPC_AUTH_NULL: | |
486 | /* Nothing to read */ | |
12fc3e92 BF |
487 | if (cbs->flavor == (u32)(-1)) |
488 | cbs->flavor = RPC_AUTH_NULL; | |
acb2887e BF |
489 | break; |
490 | case RPC_AUTH_UNIX: | |
491 | READ_BUF(8); | |
492 | /* stamp */ | |
493 | READ32(dummy); | |
494 | ||
495 | /* machine name */ | |
496 | READ32(dummy); | |
497 | READ_BUF(dummy); | |
498 | SAVEMEM(machine_name, dummy); | |
499 | ||
500 | /* uid, gid */ | |
501 | READ_BUF(8); | |
12fc3e92 BF |
502 | READ32(uid); |
503 | READ32(gid); | |
acb2887e BF |
504 | |
505 | /* more gids */ | |
506 | READ_BUF(4); | |
507 | READ32(dummy); | |
508 | READ_BUF(dummy * 4); | |
12fc3e92 | 509 | if (cbs->flavor == (u32)(-1)) { |
03bc6d1c EB |
510 | kuid_t kuid = make_kuid(&init_user_ns, uid); |
511 | kgid_t kgid = make_kgid(&init_user_ns, gid); | |
512 | if (uid_valid(kuid) && gid_valid(kgid)) { | |
513 | cbs->uid = kuid; | |
514 | cbs->gid = kgid; | |
515 | cbs->flavor = RPC_AUTH_UNIX; | |
516 | } else { | |
517 | dprintk("RPC_AUTH_UNIX with invalid" | |
518 | "uid or gid ignoring!\n"); | |
519 | } | |
12fc3e92 | 520 | } |
acb2887e BF |
521 | break; |
522 | case RPC_AUTH_GSS: | |
523 | dprintk("RPC_AUTH_GSS callback secflavor " | |
524 | "not supported!\n"); | |
525 | READ_BUF(8); | |
526 | /* gcbp_service */ | |
527 | READ32(dummy); | |
528 | /* gcbp_handle_from_server */ | |
529 | READ32(dummy); | |
530 | READ_BUF(dummy); | |
531 | p += XDR_QUADLEN(dummy); | |
532 | /* gcbp_handle_from_client */ | |
533 | READ_BUF(4); | |
534 | READ32(dummy); | |
535 | READ_BUF(dummy); | |
536 | break; | |
537 | default: | |
538 | dprintk("Illegal callback secflavor\n"); | |
539 | return nfserr_inval; | |
540 | } | |
541 | } | |
542 | DECODE_TAIL; | |
543 | } | |
544 | ||
cb73a9f4 BF |
545 | static __be32 nfsd4_decode_backchannel_ctl(struct nfsd4_compoundargs *argp, struct nfsd4_backchannel_ctl *bc) |
546 | { | |
547 | DECODE_HEAD; | |
548 | ||
549 | READ_BUF(4); | |
550 | READ32(bc->bc_cb_program); | |
551 | nfsd4_decode_cb_sec(argp, &bc->bc_cb_sec); | |
552 | ||
553 | DECODE_TAIL; | |
554 | } | |
555 | ||
1d1bc8f2 BF |
556 | static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) |
557 | { | |
558 | DECODE_HEAD; | |
1d1bc8f2 BF |
559 | |
560 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 8); | |
561 | COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
562 | READ32(bcts->dir); | |
6ce2357f BS |
563 | /* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker |
564 | * could help us figure out we should be using it. */ | |
1d1bc8f2 BF |
565 | DECODE_TAIL; |
566 | } | |
567 | ||
b37ad28b | 568 | static __be32 |
1da177e4 LT |
569 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
570 | { | |
571 | DECODE_HEAD; | |
572 | ||
e31a1b66 | 573 | READ_BUF(4); |
1da177e4 | 574 | READ32(close->cl_seqid); |
e31a1b66 | 575 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
1da177e4 LT |
576 | |
577 | DECODE_TAIL; | |
578 | } | |
579 | ||
580 | ||
b37ad28b | 581 | static __be32 |
1da177e4 LT |
582 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
583 | { | |
584 | DECODE_HEAD; | |
585 | ||
586 | READ_BUF(12); | |
587 | READ64(commit->co_offset); | |
588 | READ32(commit->co_count); | |
589 | ||
590 | DECODE_TAIL; | |
591 | } | |
592 | ||
b37ad28b | 593 | static __be32 |
1da177e4 LT |
594 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
595 | { | |
596 | DECODE_HEAD; | |
597 | ||
598 | READ_BUF(4); | |
599 | READ32(create->cr_type); | |
600 | switch (create->cr_type) { | |
601 | case NF4LNK: | |
602 | READ_BUF(4); | |
603 | READ32(create->cr_linklen); | |
604 | READ_BUF(create->cr_linklen); | |
605 | SAVEMEM(create->cr_linkname, create->cr_linklen); | |
606 | break; | |
607 | case NF4BLK: | |
608 | case NF4CHR: | |
609 | READ_BUF(8); | |
610 | READ32(create->cr_specdata1); | |
611 | READ32(create->cr_specdata2); | |
612 | break; | |
613 | case NF4SOCK: | |
614 | case NF4FIFO: | |
615 | case NF4DIR: | |
616 | default: | |
617 | break; | |
618 | } | |
619 | ||
620 | READ_BUF(4); | |
621 | READ32(create->cr_namelen); | |
622 | READ_BUF(create->cr_namelen); | |
623 | SAVEMEM(create->cr_name, create->cr_namelen); | |
a36b1725 | 624 | if ((status = check_filename(create->cr_name, create->cr_namelen))) |
1da177e4 LT |
625 | return status; |
626 | ||
3c8e0316 | 627 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
18032ca0 | 628 | &create->cr_acl, &create->cr_label); |
c0d6fc8a | 629 | if (status) |
1da177e4 LT |
630 | goto out; |
631 | ||
632 | DECODE_TAIL; | |
633 | } | |
634 | ||
b37ad28b | 635 | static inline __be32 |
1da177e4 LT |
636 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
637 | { | |
e31a1b66 | 638 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
1da177e4 LT |
639 | } |
640 | ||
b37ad28b | 641 | static inline __be32 |
1da177e4 LT |
642 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
643 | { | |
644 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
645 | } | |
646 | ||
b37ad28b | 647 | static __be32 |
1da177e4 LT |
648 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
649 | { | |
650 | DECODE_HEAD; | |
651 | ||
652 | READ_BUF(4); | |
653 | READ32(link->li_namelen); | |
654 | READ_BUF(link->li_namelen); | |
655 | SAVEMEM(link->li_name, link->li_namelen); | |
a36b1725 | 656 | if ((status = check_filename(link->li_name, link->li_namelen))) |
1da177e4 LT |
657 | return status; |
658 | ||
659 | DECODE_TAIL; | |
660 | } | |
661 | ||
b37ad28b | 662 | static __be32 |
1da177e4 LT |
663 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
664 | { | |
665 | DECODE_HEAD; | |
666 | ||
1da177e4 LT |
667 | /* |
668 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
669 | */ | |
670 | READ_BUF(28); | |
671 | READ32(lock->lk_type); | |
672 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) | |
673 | goto xdr_error; | |
674 | READ32(lock->lk_reclaim); | |
675 | READ64(lock->lk_offset); | |
676 | READ64(lock->lk_length); | |
677 | READ32(lock->lk_is_new); | |
678 | ||
679 | if (lock->lk_is_new) { | |
e31a1b66 | 680 | READ_BUF(4); |
1da177e4 | 681 | READ32(lock->lk_new_open_seqid); |
e31a1b66 BH |
682 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
683 | if (status) | |
684 | return status; | |
685 | READ_BUF(8 + sizeof(clientid_t)); | |
1da177e4 LT |
686 | READ32(lock->lk_new_lock_seqid); |
687 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); | |
688 | READ32(lock->lk_new_owner.len); | |
689 | READ_BUF(lock->lk_new_owner.len); | |
690 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
691 | } else { | |
e31a1b66 BH |
692 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
693 | if (status) | |
694 | return status; | |
695 | READ_BUF(4); | |
1da177e4 LT |
696 | READ32(lock->lk_old_lock_seqid); |
697 | } | |
698 | ||
699 | DECODE_TAIL; | |
700 | } | |
701 | ||
b37ad28b | 702 | static __be32 |
1da177e4 LT |
703 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
704 | { | |
705 | DECODE_HEAD; | |
706 | ||
707 | READ_BUF(32); | |
708 | READ32(lockt->lt_type); | |
709 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) | |
710 | goto xdr_error; | |
711 | READ64(lockt->lt_offset); | |
712 | READ64(lockt->lt_length); | |
713 | COPYMEM(&lockt->lt_clientid, 8); | |
714 | READ32(lockt->lt_owner.len); | |
715 | READ_BUF(lockt->lt_owner.len); | |
716 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
717 | ||
718 | DECODE_TAIL; | |
719 | } | |
720 | ||
b37ad28b | 721 | static __be32 |
1da177e4 LT |
722 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
723 | { | |
724 | DECODE_HEAD; | |
725 | ||
e31a1b66 | 726 | READ_BUF(8); |
1da177e4 LT |
727 | READ32(locku->lu_type); |
728 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) | |
729 | goto xdr_error; | |
730 | READ32(locku->lu_seqid); | |
e31a1b66 BH |
731 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
732 | if (status) | |
733 | return status; | |
734 | READ_BUF(16); | |
1da177e4 LT |
735 | READ64(locku->lu_offset); |
736 | READ64(locku->lu_length); | |
737 | ||
738 | DECODE_TAIL; | |
739 | } | |
740 | ||
b37ad28b | 741 | static __be32 |
1da177e4 LT |
742 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
743 | { | |
744 | DECODE_HEAD; | |
745 | ||
746 | READ_BUF(4); | |
747 | READ32(lookup->lo_len); | |
748 | READ_BUF(lookup->lo_len); | |
749 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
a36b1725 | 750 | if ((status = check_filename(lookup->lo_name, lookup->lo_len))) |
1da177e4 LT |
751 | return status; |
752 | ||
753 | DECODE_TAIL; | |
754 | } | |
755 | ||
2c8bd7e0 | 756 | static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when) |
04f9e664 BF |
757 | { |
758 | __be32 *p; | |
759 | u32 w; | |
760 | ||
761 | READ_BUF(4); | |
762 | READ32(w); | |
2c8bd7e0 BH |
763 | *share_access = w & NFS4_SHARE_ACCESS_MASK; |
764 | *deleg_want = w & NFS4_SHARE_WANT_MASK; | |
765 | if (deleg_when) | |
766 | *deleg_when = w & NFS4_SHARE_WHEN_MASK; | |
767 | ||
04f9e664 BF |
768 | switch (w & NFS4_SHARE_ACCESS_MASK) { |
769 | case NFS4_SHARE_ACCESS_READ: | |
770 | case NFS4_SHARE_ACCESS_WRITE: | |
771 | case NFS4_SHARE_ACCESS_BOTH: | |
772 | break; | |
773 | default: | |
774 | return nfserr_bad_xdr; | |
775 | } | |
fc0d14fe | 776 | w &= ~NFS4_SHARE_ACCESS_MASK; |
04f9e664 BF |
777 | if (!w) |
778 | return nfs_ok; | |
779 | if (!argp->minorversion) | |
780 | return nfserr_bad_xdr; | |
781 | switch (w & NFS4_SHARE_WANT_MASK) { | |
782 | case NFS4_SHARE_WANT_NO_PREFERENCE: | |
783 | case NFS4_SHARE_WANT_READ_DELEG: | |
784 | case NFS4_SHARE_WANT_WRITE_DELEG: | |
785 | case NFS4_SHARE_WANT_ANY_DELEG: | |
786 | case NFS4_SHARE_WANT_NO_DELEG: | |
787 | case NFS4_SHARE_WANT_CANCEL: | |
788 | break; | |
789 | default: | |
790 | return nfserr_bad_xdr; | |
791 | } | |
92bac8c5 | 792 | w &= ~NFS4_SHARE_WANT_MASK; |
04f9e664 BF |
793 | if (!w) |
794 | return nfs_ok; | |
2c8bd7e0 BH |
795 | |
796 | if (!deleg_when) /* open_downgrade */ | |
797 | return nfserr_inval; | |
04f9e664 BF |
798 | switch (w) { |
799 | case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL: | |
800 | case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED: | |
c668fc6d BH |
801 | case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL | |
802 | NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED): | |
04f9e664 BF |
803 | return nfs_ok; |
804 | } | |
805 | xdr_error: | |
806 | return nfserr_bad_xdr; | |
807 | } | |
808 | ||
809 | static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x) | |
810 | { | |
811 | __be32 *p; | |
812 | ||
813 | READ_BUF(4); | |
814 | READ32(*x); | |
815 | /* Note: unlinke access bits, deny bits may be zero. */ | |
01cd4afa | 816 | if (*x & ~NFS4_SHARE_DENY_BOTH) |
04f9e664 BF |
817 | return nfserr_bad_xdr; |
818 | return nfs_ok; | |
819 | xdr_error: | |
820 | return nfserr_bad_xdr; | |
821 | } | |
822 | ||
a084daf5 BF |
823 | static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o) |
824 | { | |
825 | __be32 *p; | |
826 | ||
827 | READ_BUF(4); | |
828 | READ32(o->len); | |
829 | ||
830 | if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT) | |
831 | return nfserr_bad_xdr; | |
832 | ||
833 | READ_BUF(o->len); | |
834 | SAVEMEM(o->data, o->len); | |
835 | return nfs_ok; | |
836 | xdr_error: | |
837 | return nfserr_bad_xdr; | |
838 | } | |
839 | ||
b37ad28b | 840 | static __be32 |
1da177e4 LT |
841 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
842 | { | |
843 | DECODE_HEAD; | |
2c8bd7e0 | 844 | u32 dummy; |
1da177e4 LT |
845 | |
846 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
847 | open->op_iattr.ia_valid = 0; | |
fe0750e5 | 848 | open->op_openowner = NULL; |
1da177e4 | 849 | |
9d313b17 | 850 | open->op_xdr_error = 0; |
1da177e4 | 851 | /* seqid, share_access, share_deny, clientid, ownerlen */ |
04f9e664 | 852 | READ_BUF(4); |
1da177e4 | 853 | READ32(open->op_seqid); |
2c8bd7e0 BH |
854 | /* decode, yet ignore deleg_when until supported */ |
855 | status = nfsd4_decode_share_access(argp, &open->op_share_access, | |
856 | &open->op_deleg_want, &dummy); | |
04f9e664 BF |
857 | if (status) |
858 | goto xdr_error; | |
859 | status = nfsd4_decode_share_deny(argp, &open->op_share_deny); | |
860 | if (status) | |
861 | goto xdr_error; | |
a084daf5 | 862 | READ_BUF(sizeof(clientid_t)); |
1da177e4 | 863 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); |
a084daf5 BF |
864 | status = nfsd4_decode_opaque(argp, &open->op_owner); |
865 | if (status) | |
866 | goto xdr_error; | |
867 | READ_BUF(4); | |
1da177e4 LT |
868 | READ32(open->op_create); |
869 | switch (open->op_create) { | |
870 | case NFS4_OPEN_NOCREATE: | |
871 | break; | |
872 | case NFS4_OPEN_CREATE: | |
873 | READ_BUF(4); | |
874 | READ32(open->op_createmode); | |
875 | switch (open->op_createmode) { | |
876 | case NFS4_CREATE_UNCHECKED: | |
877 | case NFS4_CREATE_GUARDED: | |
c0d6fc8a | 878 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
18032ca0 | 879 | &open->op_iattr, &open->op_acl, &open->op_label); |
c0d6fc8a | 880 | if (status) |
1da177e4 LT |
881 | goto out; |
882 | break; | |
883 | case NFS4_CREATE_EXCLUSIVE: | |
ab4684d1 CL |
884 | READ_BUF(NFS4_VERIFIER_SIZE); |
885 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 886 | break; |
79fb54ab BH |
887 | case NFS4_CREATE_EXCLUSIVE4_1: |
888 | if (argp->minorversion < 1) | |
889 | goto xdr_error; | |
ab4684d1 CL |
890 | READ_BUF(NFS4_VERIFIER_SIZE); |
891 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
79fb54ab | 892 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
18032ca0 | 893 | &open->op_iattr, &open->op_acl, &open->op_label); |
79fb54ab BH |
894 | if (status) |
895 | goto out; | |
896 | break; | |
1da177e4 LT |
897 | default: |
898 | goto xdr_error; | |
899 | } | |
900 | break; | |
901 | default: | |
902 | goto xdr_error; | |
903 | } | |
904 | ||
905 | /* open_claim */ | |
906 | READ_BUF(4); | |
907 | READ32(open->op_claim_type); | |
908 | switch (open->op_claim_type) { | |
909 | case NFS4_OPEN_CLAIM_NULL: | |
910 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
911 | READ_BUF(4); | |
912 | READ32(open->op_fname.len); | |
913 | READ_BUF(open->op_fname.len); | |
914 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 915 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
916 | return status; |
917 | break; | |
918 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
919 | READ_BUF(4); | |
920 | READ32(open->op_delegate_type); | |
921 | break; | |
922 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
e31a1b66 BH |
923 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
924 | if (status) | |
925 | return status; | |
926 | READ_BUF(4); | |
1da177e4 LT |
927 | READ32(open->op_fname.len); |
928 | READ_BUF(open->op_fname.len); | |
929 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 930 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
931 | return status; |
932 | break; | |
8b289b2c BF |
933 | case NFS4_OPEN_CLAIM_FH: |
934 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
935 | if (argp->minorversion < 1) | |
936 | goto xdr_error; | |
937 | /* void */ | |
938 | break; | |
939 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
940 | if (argp->minorversion < 1) | |
941 | goto xdr_error; | |
942 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); | |
943 | if (status) | |
944 | return status; | |
945 | break; | |
1da177e4 LT |
946 | default: |
947 | goto xdr_error; | |
948 | } | |
949 | ||
950 | DECODE_TAIL; | |
951 | } | |
952 | ||
b37ad28b | 953 | static __be32 |
1da177e4 LT |
954 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
955 | { | |
956 | DECODE_HEAD; | |
e1a90ebd AS |
957 | |
958 | if (argp->minorversion >= 1) | |
959 | return nfserr_notsupp; | |
960 | ||
e31a1b66 BH |
961 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
962 | if (status) | |
963 | return status; | |
964 | READ_BUF(4); | |
1da177e4 | 965 | READ32(open_conf->oc_seqid); |
e1a90ebd | 966 | |
1da177e4 LT |
967 | DECODE_TAIL; |
968 | } | |
969 | ||
b37ad28b | 970 | static __be32 |
1da177e4 LT |
971 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
972 | { | |
973 | DECODE_HEAD; | |
974 | ||
e31a1b66 BH |
975 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
976 | if (status) | |
977 | return status; | |
04f9e664 | 978 | READ_BUF(4); |
1da177e4 | 979 | READ32(open_down->od_seqid); |
2c8bd7e0 BH |
980 | status = nfsd4_decode_share_access(argp, &open_down->od_share_access, |
981 | &open_down->od_deleg_want, NULL); | |
04f9e664 BF |
982 | if (status) |
983 | return status; | |
984 | status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny); | |
985 | if (status) | |
986 | return status; | |
1da177e4 LT |
987 | DECODE_TAIL; |
988 | } | |
989 | ||
b37ad28b | 990 | static __be32 |
1da177e4 LT |
991 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
992 | { | |
993 | DECODE_HEAD; | |
994 | ||
995 | READ_BUF(4); | |
996 | READ32(putfh->pf_fhlen); | |
997 | if (putfh->pf_fhlen > NFS4_FHSIZE) | |
998 | goto xdr_error; | |
999 | READ_BUF(putfh->pf_fhlen); | |
1000 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
1001 | ||
1002 | DECODE_TAIL; | |
1003 | } | |
1004 | ||
e1a90ebd AS |
1005 | static __be32 |
1006 | nfsd4_decode_putpubfh(struct nfsd4_compoundargs *argp, void *p) | |
1007 | { | |
1008 | if (argp->minorversion == 0) | |
1009 | return nfs_ok; | |
1010 | return nfserr_notsupp; | |
1011 | } | |
1012 | ||
b37ad28b | 1013 | static __be32 |
1da177e4 LT |
1014 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
1015 | { | |
1016 | DECODE_HEAD; | |
1017 | ||
e31a1b66 BH |
1018 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
1019 | if (status) | |
1020 | return status; | |
1021 | READ_BUF(12); | |
1da177e4 LT |
1022 | READ64(read->rd_offset); |
1023 | READ32(read->rd_length); | |
1024 | ||
1025 | DECODE_TAIL; | |
1026 | } | |
1027 | ||
b37ad28b | 1028 | static __be32 |
1da177e4 LT |
1029 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
1030 | { | |
1031 | DECODE_HEAD; | |
1032 | ||
1033 | READ_BUF(24); | |
1034 | READ64(readdir->rd_cookie); | |
1035 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); | |
1036 | READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ | |
1037 | READ32(readdir->rd_maxcount); | |
1038 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) | |
1039 | goto out; | |
1040 | ||
1041 | DECODE_TAIL; | |
1042 | } | |
1043 | ||
b37ad28b | 1044 | static __be32 |
1da177e4 LT |
1045 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
1046 | { | |
1047 | DECODE_HEAD; | |
1048 | ||
1049 | READ_BUF(4); | |
1050 | READ32(remove->rm_namelen); | |
1051 | READ_BUF(remove->rm_namelen); | |
1052 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
a36b1725 | 1053 | if ((status = check_filename(remove->rm_name, remove->rm_namelen))) |
1da177e4 LT |
1054 | return status; |
1055 | ||
1056 | DECODE_TAIL; | |
1057 | } | |
1058 | ||
b37ad28b | 1059 | static __be32 |
1da177e4 LT |
1060 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
1061 | { | |
1062 | DECODE_HEAD; | |
1063 | ||
1064 | READ_BUF(4); | |
1065 | READ32(rename->rn_snamelen); | |
1066 | READ_BUF(rename->rn_snamelen + 4); | |
1067 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); | |
1068 | READ32(rename->rn_tnamelen); | |
1069 | READ_BUF(rename->rn_tnamelen); | |
1070 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
a36b1725 | 1071 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen))) |
1da177e4 | 1072 | return status; |
a36b1725 | 1073 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen))) |
1da177e4 LT |
1074 | return status; |
1075 | ||
1076 | DECODE_TAIL; | |
1077 | } | |
1078 | ||
b37ad28b | 1079 | static __be32 |
1da177e4 LT |
1080 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
1081 | { | |
1082 | DECODE_HEAD; | |
1083 | ||
e1a90ebd AS |
1084 | if (argp->minorversion >= 1) |
1085 | return nfserr_notsupp; | |
1086 | ||
1da177e4 LT |
1087 | READ_BUF(sizeof(clientid_t)); |
1088 | COPYMEM(clientid, sizeof(clientid_t)); | |
1089 | ||
1090 | DECODE_TAIL; | |
1091 | } | |
1092 | ||
dcb488a3 AA |
1093 | static __be32 |
1094 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
1095 | struct nfsd4_secinfo *secinfo) | |
1096 | { | |
1097 | DECODE_HEAD; | |
1098 | ||
1099 | READ_BUF(4); | |
1100 | READ32(secinfo->si_namelen); | |
1101 | READ_BUF(secinfo->si_namelen); | |
1102 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
a36b1725 | 1103 | status = check_filename(secinfo->si_name, secinfo->si_namelen); |
dcb488a3 AA |
1104 | if (status) |
1105 | return status; | |
1106 | DECODE_TAIL; | |
1107 | } | |
1108 | ||
04f4ad16 BF |
1109 | static __be32 |
1110 | nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, | |
1111 | struct nfsd4_secinfo_no_name *sin) | |
1112 | { | |
1113 | DECODE_HEAD; | |
1114 | ||
1115 | READ_BUF(4); | |
1116 | READ32(sin->sin_style); | |
1117 | DECODE_TAIL; | |
1118 | } | |
1119 | ||
b37ad28b | 1120 | static __be32 |
1da177e4 LT |
1121 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
1122 | { | |
e31a1b66 | 1123 | __be32 status; |
1da177e4 | 1124 | |
e31a1b66 BH |
1125 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
1126 | if (status) | |
1127 | return status; | |
3c8e0316 | 1128 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
18032ca0 | 1129 | &setattr->sa_acl, &setattr->sa_label); |
1da177e4 LT |
1130 | } |
1131 | ||
b37ad28b | 1132 | static __be32 |
1da177e4 LT |
1133 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
1134 | { | |
1135 | DECODE_HEAD; | |
1136 | ||
e1a90ebd AS |
1137 | if (argp->minorversion >= 1) |
1138 | return nfserr_notsupp; | |
1139 | ||
ab4684d1 CL |
1140 | READ_BUF(NFS4_VERIFIER_SIZE); |
1141 | COPYMEM(setclientid->se_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 1142 | |
a084daf5 BF |
1143 | status = nfsd4_decode_opaque(argp, &setclientid->se_name); |
1144 | if (status) | |
1145 | return nfserr_bad_xdr; | |
1146 | READ_BUF(8); | |
1da177e4 LT |
1147 | READ32(setclientid->se_callback_prog); |
1148 | READ32(setclientid->se_callback_netid_len); | |
1149 | ||
1150 | READ_BUF(setclientid->se_callback_netid_len + 4); | |
1151 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); | |
1152 | READ32(setclientid->se_callback_addr_len); | |
1153 | ||
1154 | READ_BUF(setclientid->se_callback_addr_len + 4); | |
1155 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); | |
1156 | READ32(setclientid->se_callback_ident); | |
1157 | ||
1158 | DECODE_TAIL; | |
1159 | } | |
1160 | ||
b37ad28b | 1161 | static __be32 |
1da177e4 LT |
1162 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
1163 | { | |
1164 | DECODE_HEAD; | |
1165 | ||
e1a90ebd AS |
1166 | if (argp->minorversion >= 1) |
1167 | return nfserr_notsupp; | |
1168 | ||
ab4684d1 | 1169 | READ_BUF(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 1170 | COPYMEM(&scd_c->sc_clientid, 8); |
ab4684d1 | 1171 | COPYMEM(&scd_c->sc_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
1172 | |
1173 | DECODE_TAIL; | |
1174 | } | |
1175 | ||
1176 | /* Also used for NVERIFY */ | |
b37ad28b | 1177 | static __be32 |
1da177e4 LT |
1178 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
1179 | { | |
1da177e4 LT |
1180 | DECODE_HEAD; |
1181 | ||
1182 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
1183 | goto out; | |
1184 | ||
1185 | /* For convenience's sake, we compare raw xdr'd attributes in | |
e5f95703 BF |
1186 | * nfsd4_proc_verify */ |
1187 | ||
1da177e4 LT |
1188 | READ_BUF(4); |
1189 | READ32(verify->ve_attrlen); | |
1190 | READ_BUF(verify->ve_attrlen); | |
1191 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
1192 | ||
1193 | DECODE_TAIL; | |
1194 | } | |
1195 | ||
b37ad28b | 1196 | static __be32 |
1da177e4 LT |
1197 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
1198 | { | |
1199 | int avail; | |
1da177e4 LT |
1200 | int len; |
1201 | DECODE_HEAD; | |
1202 | ||
e31a1b66 BH |
1203 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
1204 | if (status) | |
1205 | return status; | |
1206 | READ_BUF(16); | |
1da177e4 LT |
1207 | READ64(write->wr_offset); |
1208 | READ32(write->wr_stable_how); | |
1209 | if (write->wr_stable_how > 2) | |
1210 | goto xdr_error; | |
1211 | READ32(write->wr_buflen); | |
1212 | ||
1213 | /* Sorry .. no magic macros for this.. * | |
1214 | * READ_BUF(write->wr_buflen); | |
1215 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
1216 | */ | |
1217 | avail = (char*)argp->end - (char*)argp->p; | |
1218 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
1219 | dprintk("NFSD: xdr error (%s:%d)\n", |
1220 | __FILE__, __LINE__); | |
1da177e4 LT |
1221 | goto xdr_error; |
1222 | } | |
70cc7f75 BF |
1223 | write->wr_head.iov_base = p; |
1224 | write->wr_head.iov_len = avail; | |
5a80a54d | 1225 | WARN_ON(avail != (XDR_QUADLEN(avail) << 2)); |
70cc7f75 | 1226 | write->wr_pagelist = argp->pagelist; |
5a80a54d BF |
1227 | |
1228 | len = XDR_QUADLEN(write->wr_buflen) << 2; | |
1229 | if (len >= avail) { | |
1230 | int pages; | |
1231 | ||
1232 | len -= avail; | |
1233 | ||
1234 | pages = len >> PAGE_SHIFT; | |
1235 | argp->pagelist += pages; | |
1236 | argp->pagelen -= pages * PAGE_SIZE; | |
1237 | len -= pages * PAGE_SIZE; | |
1238 | ||
1239 | argp->p = (__be32 *)page_address(argp->pagelist[0]); | |
365da4ad | 1240 | argp->pagelist++; |
5a80a54d | 1241 | argp->end = argp->p + XDR_QUADLEN(PAGE_SIZE); |
1da177e4 | 1242 | } |
5a80a54d | 1243 | argp->p += XDR_QUADLEN(len); |
1da177e4 LT |
1244 | |
1245 | DECODE_TAIL; | |
1246 | } | |
1247 | ||
b37ad28b | 1248 | static __be32 |
1da177e4 LT |
1249 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
1250 | { | |
1251 | DECODE_HEAD; | |
1252 | ||
e1a90ebd AS |
1253 | if (argp->minorversion >= 1) |
1254 | return nfserr_notsupp; | |
1255 | ||
1da177e4 LT |
1256 | READ_BUF(12); |
1257 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
1258 | READ32(rlockowner->rl_owner.len); | |
1259 | READ_BUF(rlockowner->rl_owner.len); | |
1260 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
1261 | ||
60adfc50 AA |
1262 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1263 | return nfserr_inval; | |
1da177e4 LT |
1264 | DECODE_TAIL; |
1265 | } | |
1266 | ||
2db134eb AA |
1267 | static __be32 |
1268 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1269 | struct nfsd4_exchange_id *exid) |
2db134eb | 1270 | { |
5afa040b | 1271 | int dummy, tmp; |
0733d213 AA |
1272 | DECODE_HEAD; |
1273 | ||
1274 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1275 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1276 | ||
a084daf5 BF |
1277 | status = nfsd4_decode_opaque(argp, &exid->clname); |
1278 | if (status) | |
1279 | return nfserr_bad_xdr; | |
0733d213 AA |
1280 | |
1281 | READ_BUF(4); | |
1282 | READ32(exid->flags); | |
1283 | ||
1284 | /* Ignore state_protect4_a */ | |
1285 | READ_BUF(4); | |
1286 | READ32(exid->spa_how); | |
1287 | switch (exid->spa_how) { | |
1288 | case SP4_NONE: | |
1289 | break; | |
1290 | case SP4_MACH_CRED: | |
1291 | /* spo_must_enforce */ | |
1292 | READ_BUF(4); | |
1293 | READ32(dummy); | |
1294 | READ_BUF(dummy * 4); | |
1295 | p += dummy; | |
1296 | ||
1297 | /* spo_must_allow */ | |
1298 | READ_BUF(4); | |
1299 | READ32(dummy); | |
1300 | READ_BUF(dummy * 4); | |
1301 | p += dummy; | |
1302 | break; | |
1303 | case SP4_SSV: | |
1304 | /* ssp_ops */ | |
1305 | READ_BUF(4); | |
1306 | READ32(dummy); | |
1307 | READ_BUF(dummy * 4); | |
1308 | p += dummy; | |
1309 | ||
1310 | READ_BUF(4); | |
1311 | READ32(dummy); | |
1312 | READ_BUF(dummy * 4); | |
1313 | p += dummy; | |
1314 | ||
1315 | /* ssp_hash_algs<> */ | |
1316 | READ_BUF(4); | |
5afa040b MJ |
1317 | READ32(tmp); |
1318 | while (tmp--) { | |
1319 | READ_BUF(4); | |
1320 | READ32(dummy); | |
1321 | READ_BUF(dummy); | |
1322 | p += XDR_QUADLEN(dummy); | |
1323 | } | |
0733d213 AA |
1324 | |
1325 | /* ssp_encr_algs<> */ | |
1326 | READ_BUF(4); | |
5afa040b MJ |
1327 | READ32(tmp); |
1328 | while (tmp--) { | |
1329 | READ_BUF(4); | |
1330 | READ32(dummy); | |
1331 | READ_BUF(dummy); | |
1332 | p += XDR_QUADLEN(dummy); | |
1333 | } | |
0733d213 AA |
1334 | |
1335 | /* ssp_window and ssp_num_gss_handles */ | |
1336 | READ_BUF(8); | |
1337 | READ32(dummy); | |
1338 | READ32(dummy); | |
1339 | break; | |
1340 | default: | |
1341 | goto xdr_error; | |
1342 | } | |
1343 | ||
1344 | /* Ignore Implementation ID */ | |
1345 | READ_BUF(4); /* nfs_impl_id4 array length */ | |
1346 | READ32(dummy); | |
1347 | ||
1348 | if (dummy > 1) | |
1349 | goto xdr_error; | |
1350 | ||
1351 | if (dummy == 1) { | |
1352 | /* nii_domain */ | |
1353 | READ_BUF(4); | |
1354 | READ32(dummy); | |
1355 | READ_BUF(dummy); | |
1356 | p += XDR_QUADLEN(dummy); | |
1357 | ||
1358 | /* nii_name */ | |
1359 | READ_BUF(4); | |
1360 | READ32(dummy); | |
1361 | READ_BUF(dummy); | |
1362 | p += XDR_QUADLEN(dummy); | |
1363 | ||
1364 | /* nii_date */ | |
1365 | READ_BUF(12); | |
1366 | p += 3; | |
1367 | } | |
1368 | DECODE_TAIL; | |
2db134eb AA |
1369 | } |
1370 | ||
1371 | static __be32 | |
1372 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1373 | struct nfsd4_create_session *sess) | |
1374 | { | |
ec6b5d7b | 1375 | DECODE_HEAD; |
ec6b5d7b | 1376 | u32 dummy; |
ec6b5d7b AA |
1377 | |
1378 | READ_BUF(16); | |
1379 | COPYMEM(&sess->clientid, 8); | |
1380 | READ32(sess->seqid); | |
1381 | READ32(sess->flags); | |
1382 | ||
1383 | /* Fore channel attrs */ | |
1384 | READ_BUF(28); | |
1385 | READ32(dummy); /* headerpadsz is always 0 */ | |
1386 | READ32(sess->fore_channel.maxreq_sz); | |
1387 | READ32(sess->fore_channel.maxresp_sz); | |
1388 | READ32(sess->fore_channel.maxresp_cached); | |
1389 | READ32(sess->fore_channel.maxops); | |
1390 | READ32(sess->fore_channel.maxreqs); | |
1391 | READ32(sess->fore_channel.nr_rdma_attrs); | |
1392 | if (sess->fore_channel.nr_rdma_attrs == 1) { | |
1393 | READ_BUF(4); | |
1394 | READ32(sess->fore_channel.rdma_attrs); | |
1395 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { | |
1396 | dprintk("Too many fore channel attr bitmaps!\n"); | |
1397 | goto xdr_error; | |
1398 | } | |
1399 | ||
1400 | /* Back channel attrs */ | |
1401 | READ_BUF(28); | |
1402 | READ32(dummy); /* headerpadsz is always 0 */ | |
1403 | READ32(sess->back_channel.maxreq_sz); | |
1404 | READ32(sess->back_channel.maxresp_sz); | |
1405 | READ32(sess->back_channel.maxresp_cached); | |
1406 | READ32(sess->back_channel.maxops); | |
1407 | READ32(sess->back_channel.maxreqs); | |
1408 | READ32(sess->back_channel.nr_rdma_attrs); | |
1409 | if (sess->back_channel.nr_rdma_attrs == 1) { | |
1410 | READ_BUF(4); | |
1411 | READ32(sess->back_channel.rdma_attrs); | |
1412 | } else if (sess->back_channel.nr_rdma_attrs > 1) { | |
1413 | dprintk("Too many back channel attr bitmaps!\n"); | |
1414 | goto xdr_error; | |
1415 | } | |
1416 | ||
acb2887e | 1417 | READ_BUF(4); |
ec6b5d7b | 1418 | READ32(sess->callback_prog); |
acb2887e | 1419 | nfsd4_decode_cb_sec(argp, &sess->cb_sec); |
ec6b5d7b | 1420 | DECODE_TAIL; |
2db134eb AA |
1421 | } |
1422 | ||
1423 | static __be32 | |
1424 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, | |
1425 | struct nfsd4_destroy_session *destroy_session) | |
1426 | { | |
e10e0cfc BH |
1427 | DECODE_HEAD; |
1428 | READ_BUF(NFS4_MAX_SESSIONID_LEN); | |
1429 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1430 | ||
1431 | DECODE_TAIL; | |
2db134eb AA |
1432 | } |
1433 | ||
e1ca12df BS |
1434 | static __be32 |
1435 | nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp, | |
1436 | struct nfsd4_free_stateid *free_stateid) | |
1437 | { | |
1438 | DECODE_HEAD; | |
1439 | ||
1440 | READ_BUF(sizeof(stateid_t)); | |
1441 | READ32(free_stateid->fr_stateid.si_generation); | |
1442 | COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
1443 | ||
1444 | DECODE_TAIL; | |
1445 | } | |
1446 | ||
2db134eb AA |
1447 | static __be32 |
1448 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, | |
1449 | struct nfsd4_sequence *seq) | |
1450 | { | |
b85d4c01 BH |
1451 | DECODE_HEAD; |
1452 | ||
1453 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); | |
1454 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1455 | READ32(seq->seqid); | |
1456 | READ32(seq->slotid); | |
1457 | READ32(seq->maxslots); | |
1458 | READ32(seq->cachethis); | |
1459 | ||
1460 | DECODE_TAIL; | |
2db134eb AA |
1461 | } |
1462 | ||
17456804 BS |
1463 | static __be32 |
1464 | nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid) | |
1465 | { | |
17456804 | 1466 | int i; |
03cfb420 BS |
1467 | __be32 *p, status; |
1468 | struct nfsd4_test_stateid_id *stateid; | |
17456804 BS |
1469 | |
1470 | READ_BUF(4); | |
1471 | test_stateid->ts_num_ids = ntohl(*p++); | |
1472 | ||
03cfb420 | 1473 | INIT_LIST_HEAD(&test_stateid->ts_stateid_list); |
17456804 BS |
1474 | |
1475 | for (i = 0; i < test_stateid->ts_num_ids; i++) { | |
03cfb420 BS |
1476 | stateid = kmalloc(sizeof(struct nfsd4_test_stateid_id), GFP_KERNEL); |
1477 | if (!stateid) { | |
afcf6792 | 1478 | status = nfserrno(-ENOMEM); |
03cfb420 BS |
1479 | goto out; |
1480 | } | |
1481 | ||
1482 | defer_free(argp, kfree, stateid); | |
1483 | INIT_LIST_HEAD(&stateid->ts_id_list); | |
1484 | list_add_tail(&stateid->ts_id_list, &test_stateid->ts_stateid_list); | |
1485 | ||
1486 | status = nfsd4_decode_stateid(argp, &stateid->ts_id_stateid); | |
17456804 | 1487 | if (status) |
03cfb420 | 1488 | goto out; |
17456804 BS |
1489 | } |
1490 | ||
1491 | status = 0; | |
1492 | out: | |
1493 | return status; | |
1494 | xdr_error: | |
1495 | dprintk("NFSD: xdr error (%s:%d)\n", __FILE__, __LINE__); | |
1496 | status = nfserr_bad_xdr; | |
1497 | goto out; | |
1498 | } | |
1499 | ||
345c2842 MJ |
1500 | static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_clientid *dc) |
1501 | { | |
1502 | DECODE_HEAD; | |
1503 | ||
1504 | READ_BUF(8); | |
1505 | COPYMEM(&dc->clientid, 8); | |
1506 | ||
1507 | DECODE_TAIL; | |
1508 | } | |
1509 | ||
4dc6ec00 BF |
1510 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) |
1511 | { | |
1512 | DECODE_HEAD; | |
1513 | ||
1514 | READ_BUF(4); | |
1515 | READ32(rc->rca_one_fs); | |
1516 | ||
1517 | DECODE_TAIL; | |
1518 | } | |
1519 | ||
347e0ad9 BH |
1520 | static __be32 |
1521 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1522 | { | |
1523 | return nfs_ok; | |
1524 | } | |
1525 | ||
3c375c6f BH |
1526 | static __be32 |
1527 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1528 | { | |
1e685ec2 | 1529 | return nfserr_notsupp; |
3c375c6f BH |
1530 | } |
1531 | ||
347e0ad9 BH |
1532 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1533 | ||
1534 | static nfsd4_dec nfsd4_dec_ops[] = { | |
ad1060c8 BF |
1535 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1536 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1537 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1538 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1539 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1540 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1541 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1542 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1543 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1544 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1545 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1546 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1547 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1548 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1549 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1550 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1551 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1552 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1553 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1554 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
e1a90ebd | 1555 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_putpubfh, |
ad1060c8 BF |
1556 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1557 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1558 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1559 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1560 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1561 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1562 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1563 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1564 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1565 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1566 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1567 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1568 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1569 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1570 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1571 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
2db134eb AA |
1572 | |
1573 | /* new operations for NFSv4.1 */ | |
cb73a9f4 | 1574 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_backchannel_ctl, |
1d1bc8f2 | 1575 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
9064caae RD |
1576 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
1577 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
1578 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
e1ca12df | 1579 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, |
9064caae RD |
1580 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
1581 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1582 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1583 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1584 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1585 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
04f4ad16 | 1586 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
9064caae RD |
1587 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
1588 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
17456804 | 1589 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid, |
9064caae | 1590 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
345c2842 | 1591 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, |
4dc6ec00 | 1592 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
2db134eb AA |
1593 | }; |
1594 | ||
e1a90ebd AS |
1595 | static inline bool |
1596 | nfsd4_opnum_in_range(struct nfsd4_compoundargs *argp, struct nfsd4_op *op) | |
1597 | { | |
8217d146 | 1598 | if (op->opnum < FIRST_NFS4_OP) |
e1a90ebd | 1599 | return false; |
8217d146 | 1600 | else if (argp->minorversion == 0 && op->opnum > LAST_NFS40_OP) |
e1a90ebd | 1601 | return false; |
8217d146 AS |
1602 | else if (argp->minorversion == 1 && op->opnum > LAST_NFS41_OP) |
1603 | return false; | |
1604 | else if (argp->minorversion == 2 && op->opnum > LAST_NFS42_OP) | |
e1a90ebd AS |
1605 | return false; |
1606 | return true; | |
1607 | } | |
f2feb96b | 1608 | |
6ff40dec BF |
1609 | /* |
1610 | * Return a rough estimate of the maximum possible reply size. Note the | |
1611 | * estimate includes rpc headers so is meant to be passed to | |
1612 | * svc_reserve, not svc_reserve_auth. | |
1613 | * | |
1614 | * Also note the current compound encoding permits only one operation to | |
1615 | * use pages beyond the first one, so the maximum possible length is the | |
1616 | * maximum over these values, not the sum. | |
1617 | */ | |
1618 | static int nfsd4_max_reply(u32 opnum) | |
1619 | { | |
1620 | switch (opnum) { | |
1621 | case OP_READLINK: | |
1622 | case OP_READDIR: | |
1623 | /* | |
1624 | * Both of these ops take a single page for data and put | |
1625 | * the head and tail in another page: | |
1626 | */ | |
1627 | return 2 * PAGE_SIZE; | |
1628 | case OP_READ: | |
1629 | return INT_MAX; | |
1630 | default: | |
1631 | return PAGE_SIZE; | |
1632 | } | |
1633 | } | |
1634 | ||
b37ad28b | 1635 | static __be32 |
1da177e4 LT |
1636 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1637 | { | |
1638 | DECODE_HEAD; | |
1639 | struct nfsd4_op *op; | |
1091006c | 1640 | bool cachethis = false; |
6ff40dec | 1641 | int max_reply = PAGE_SIZE; |
1da177e4 LT |
1642 | int i; |
1643 | ||
1da177e4 LT |
1644 | READ_BUF(4); |
1645 | READ32(argp->taglen); | |
1646 | READ_BUF(argp->taglen + 8); | |
1647 | SAVEMEM(argp->tag, argp->taglen); | |
1648 | READ32(argp->minorversion); | |
1649 | READ32(argp->opcnt); | |
1650 | ||
1651 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1652 | goto xdr_error; | |
1653 | if (argp->opcnt > 100) | |
1654 | goto xdr_error; | |
1655 | ||
e8c96f8c | 1656 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
1da177e4 LT |
1657 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1658 | if (!argp->ops) { | |
1659 | argp->ops = argp->iops; | |
817cb9d4 | 1660 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1661 | goto xdr_error; |
1662 | } | |
1663 | } | |
1664 | ||
e1a90ebd | 1665 | if (argp->minorversion > NFSD_SUPPORTED_MINOR_VERSION) |
30cff1ff BH |
1666 | argp->opcnt = 0; |
1667 | ||
1da177e4 LT |
1668 | for (i = 0; i < argp->opcnt; i++) { |
1669 | op = &argp->ops[i]; | |
1670 | op->replay = NULL; | |
1671 | ||
8a61b18c BF |
1672 | READ_BUF(4); |
1673 | READ32(op->opnum); | |
1da177e4 | 1674 | |
e1a90ebd AS |
1675 | if (nfsd4_opnum_in_range(argp, op)) |
1676 | op->status = nfsd4_dec_ops[op->opnum](argp, &op->u); | |
347e0ad9 | 1677 | else { |
1da177e4 LT |
1678 | op->opnum = OP_ILLEGAL; |
1679 | op->status = nfserr_op_illegal; | |
1da177e4 LT |
1680 | } |
1681 | ||
1682 | if (op->status) { | |
1683 | argp->opcnt = i+1; | |
1684 | break; | |
1685 | } | |
1091006c BF |
1686 | /* |
1687 | * We'll try to cache the result in the DRC if any one | |
1688 | * op in the compound wants to be cached: | |
1689 | */ | |
1690 | cachethis |= nfsd4_cache_this_op(op); | |
6ff40dec BF |
1691 | |
1692 | max_reply = max(max_reply, nfsd4_max_reply(op->opnum)); | |
1da177e4 | 1693 | } |
1091006c BF |
1694 | /* Sessions make the DRC unnecessary: */ |
1695 | if (argp->minorversion) | |
1696 | cachethis = false; | |
6ff40dec BF |
1697 | if (max_reply != INT_MAX) |
1698 | svc_reserve(argp->rqstp, max_reply); | |
1091006c | 1699 | argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; |
1da177e4 LT |
1700 | |
1701 | DECODE_TAIL; | |
1702 | } | |
1da177e4 | 1703 | |
1da177e4 LT |
1704 | #define WRITE32(n) *p++ = htonl(n) |
1705 | #define WRITE64(n) do { \ | |
1706 | *p++ = htonl((u32)((n) >> 32)); \ | |
1707 | *p++ = htonl((u32)(n)); \ | |
1708 | } while (0) | |
5108b276 | 1709 | #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \ |
1da177e4 LT |
1710 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ |
1711 | memcpy(p, ptr, nbytes); \ | |
1712 | p += XDR_QUADLEN(nbytes); \ | |
5108b276 | 1713 | }} while (0) |
c654b8a9 BF |
1714 | |
1715 | static void write32(__be32 **p, u32 n) | |
1716 | { | |
45eaa1c1 | 1717 | *(*p)++ = htonl(n); |
c654b8a9 BF |
1718 | } |
1719 | ||
1720 | static void write64(__be32 **p, u64 n) | |
1721 | { | |
45eaa1c1 | 1722 | write32(p, (n >> 32)); |
c654b8a9 BF |
1723 | write32(p, (u32)n); |
1724 | } | |
1725 | ||
1726 | static void write_change(__be32 **p, struct kstat *stat, struct inode *inode) | |
1727 | { | |
1728 | if (IS_I_VERSION(inode)) { | |
1729 | write64(p, inode->i_version); | |
1730 | } else { | |
1731 | write32(p, stat->ctime.tv_sec); | |
1732 | write32(p, stat->ctime.tv_nsec); | |
1733 | } | |
1734 | } | |
1735 | ||
1736 | static void write_cinfo(__be32 **p, struct nfsd4_change_info *c) | |
1737 | { | |
1738 | write32(p, c->atomic); | |
1739 | if (c->change_supported) { | |
1740 | write64(p, c->before_change); | |
1741 | write64(p, c->after_change); | |
1742 | } else { | |
1743 | write32(p, c->before_ctime_sec); | |
1744 | write32(p, c->before_ctime_nsec); | |
1745 | write32(p, c->after_ctime_sec); | |
1746 | write32(p, c->after_ctime_nsec); | |
1747 | } | |
1748 | } | |
1da177e4 LT |
1749 | |
1750 | #define RESERVE_SPACE(nbytes) do { \ | |
1751 | p = resp->p; \ | |
1752 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ | |
1753 | } while (0) | |
1754 | #define ADJUST_ARGS() resp->p = p | |
1755 | ||
81c3f413 | 1756 | /* Encode as an array of strings the string given with components |
e7a0444a | 1757 | * separated @sep, escaped with esc_enter and esc_exit. |
81c3f413 | 1758 | */ |
e7a0444a WAA |
1759 | static __be32 nfsd4_encode_components_esc(char sep, char *components, |
1760 | __be32 **pp, int *buflen, | |
1761 | char esc_enter, char esc_exit) | |
81c3f413 | 1762 | { |
2ebbc012 AV |
1763 | __be32 *p = *pp; |
1764 | __be32 *countp = p; | |
81c3f413 | 1765 | int strlen, count=0; |
e7a0444a | 1766 | char *str, *end, *next; |
81c3f413 BF |
1767 | |
1768 | dprintk("nfsd4_encode_components(%s)\n", components); | |
1769 | if ((*buflen -= 4) < 0) | |
1770 | return nfserr_resource; | |
1771 | WRITE32(0); /* We will fill this in with @count later */ | |
1772 | end = str = components; | |
1773 | while (*end) { | |
e7a0444a WAA |
1774 | bool found_esc = false; |
1775 | ||
1776 | /* try to parse as esc_start, ..., esc_end, sep */ | |
1777 | if (*str == esc_enter) { | |
1778 | for (; *end && (*end != esc_exit); end++) | |
1779 | /* find esc_exit or end of string */; | |
1780 | next = end + 1; | |
1781 | if (*end && (!*next || *next == sep)) { | |
1782 | str++; | |
1783 | found_esc = true; | |
1784 | } | |
1785 | } | |
1786 | ||
1787 | if (!found_esc) | |
1788 | for (; *end && (*end != sep); end++) | |
1789 | /* find sep or end of string */; | |
1790 | ||
81c3f413 BF |
1791 | strlen = end - str; |
1792 | if (strlen) { | |
1793 | if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0) | |
1794 | return nfserr_resource; | |
1795 | WRITE32(strlen); | |
1796 | WRITEMEM(str, strlen); | |
1797 | count++; | |
1798 | } | |
1799 | else | |
1800 | end++; | |
1801 | str = end; | |
1802 | } | |
1803 | *pp = p; | |
1804 | p = countp; | |
1805 | WRITE32(count); | |
1806 | return 0; | |
1807 | } | |
1808 | ||
e7a0444a WAA |
1809 | /* Encode as an array of strings the string given with components |
1810 | * separated @sep. | |
1811 | */ | |
1812 | static __be32 nfsd4_encode_components(char sep, char *components, | |
1813 | __be32 **pp, int *buflen) | |
1814 | { | |
1815 | return nfsd4_encode_components_esc(sep, components, pp, buflen, 0, 0); | |
1816 | } | |
1817 | ||
81c3f413 BF |
1818 | /* |
1819 | * encode a location element of a fs_locations structure | |
1820 | */ | |
b37ad28b | 1821 | static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location, |
2ebbc012 | 1822 | __be32 **pp, int *buflen) |
81c3f413 | 1823 | { |
b37ad28b | 1824 | __be32 status; |
2ebbc012 | 1825 | __be32 *p = *pp; |
81c3f413 | 1826 | |
e7a0444a WAA |
1827 | status = nfsd4_encode_components_esc(':', location->hosts, &p, buflen, |
1828 | '[', ']'); | |
81c3f413 BF |
1829 | if (status) |
1830 | return status; | |
1831 | status = nfsd4_encode_components('/', location->path, &p, buflen); | |
1832 | if (status) | |
1833 | return status; | |
1834 | *pp = p; | |
1835 | return 0; | |
1836 | } | |
1837 | ||
1838 | /* | |
ed748aac | 1839 | * Encode a path in RFC3530 'pathname4' format |
81c3f413 | 1840 | */ |
ed748aac TM |
1841 | static __be32 nfsd4_encode_path(const struct path *root, |
1842 | const struct path *path, __be32 **pp, int *buflen) | |
81c3f413 | 1843 | { |
301f0268 | 1844 | struct path cur = *path; |
ed748aac TM |
1845 | __be32 *p = *pp; |
1846 | struct dentry **components = NULL; | |
1847 | unsigned int ncomponents = 0; | |
1848 | __be32 err = nfserr_jukebox; | |
81c3f413 | 1849 | |
ed748aac | 1850 | dprintk("nfsd4_encode_components("); |
81c3f413 | 1851 | |
ed748aac TM |
1852 | path_get(&cur); |
1853 | /* First walk the path up to the nfsd root, and store the | |
1854 | * dentries/path components in an array. | |
1855 | */ | |
1856 | for (;;) { | |
1857 | if (cur.dentry == root->dentry && cur.mnt == root->mnt) | |
1858 | break; | |
1859 | if (cur.dentry == cur.mnt->mnt_root) { | |
1860 | if (follow_up(&cur)) | |
1861 | continue; | |
1862 | goto out_free; | |
1863 | } | |
1864 | if ((ncomponents & 15) == 0) { | |
1865 | struct dentry **new; | |
1866 | new = krealloc(components, | |
1867 | sizeof(*new) * (ncomponents + 16), | |
1868 | GFP_KERNEL); | |
1869 | if (!new) | |
1870 | goto out_free; | |
1871 | components = new; | |
1872 | } | |
1873 | components[ncomponents++] = cur.dentry; | |
1874 | cur.dentry = dget_parent(cur.dentry); | |
1875 | } | |
81c3f413 | 1876 | |
ed748aac TM |
1877 | *buflen -= 4; |
1878 | if (*buflen < 0) | |
1879 | goto out_free; | |
1880 | WRITE32(ncomponents); | |
1881 | ||
1882 | while (ncomponents) { | |
1883 | struct dentry *dentry = components[ncomponents - 1]; | |
301f0268 | 1884 | unsigned int len; |
ed748aac | 1885 | |
301f0268 AV |
1886 | spin_lock(&dentry->d_lock); |
1887 | len = dentry->d_name.len; | |
ed748aac | 1888 | *buflen -= 4 + (XDR_QUADLEN(len) << 2); |
301f0268 AV |
1889 | if (*buflen < 0) { |
1890 | spin_unlock(&dentry->d_lock); | |
ed748aac | 1891 | goto out_free; |
301f0268 | 1892 | } |
ed748aac TM |
1893 | WRITE32(len); |
1894 | WRITEMEM(dentry->d_name.name, len); | |
1895 | dprintk("/%s", dentry->d_name.name); | |
301f0268 | 1896 | spin_unlock(&dentry->d_lock); |
ed748aac TM |
1897 | dput(dentry); |
1898 | ncomponents--; | |
81c3f413 | 1899 | } |
ed748aac TM |
1900 | |
1901 | *pp = p; | |
1902 | err = 0; | |
1903 | out_free: | |
1904 | dprintk(")\n"); | |
1905 | while (ncomponents) | |
1906 | dput(components[--ncomponents]); | |
1907 | kfree(components); | |
1908 | path_put(&cur); | |
1909 | return err; | |
1910 | } | |
1911 | ||
1912 | static __be32 nfsd4_encode_fsloc_fsroot(struct svc_rqst *rqstp, | |
1913 | const struct path *path, __be32 **pp, int *buflen) | |
1914 | { | |
1915 | struct svc_export *exp_ps; | |
1916 | __be32 res; | |
1917 | ||
1918 | exp_ps = rqst_find_fsidzero_export(rqstp); | |
1919 | if (IS_ERR(exp_ps)) | |
1920 | return nfserrno(PTR_ERR(exp_ps)); | |
1921 | res = nfsd4_encode_path(&exp_ps->ex_path, path, pp, buflen); | |
1922 | exp_put(exp_ps); | |
1923 | return res; | |
81c3f413 BF |
1924 | } |
1925 | ||
1926 | /* | |
1927 | * encode a fs_locations structure | |
1928 | */ | |
b37ad28b | 1929 | static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp, |
81c3f413 | 1930 | struct svc_export *exp, |
2ebbc012 | 1931 | __be32 **pp, int *buflen) |
81c3f413 | 1932 | { |
b37ad28b | 1933 | __be32 status; |
cc45f017 | 1934 | int i; |
2ebbc012 | 1935 | __be32 *p = *pp; |
81c3f413 | 1936 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
81c3f413 | 1937 | |
ed748aac | 1938 | status = nfsd4_encode_fsloc_fsroot(rqstp, &exp->ex_path, &p, buflen); |
81c3f413 BF |
1939 | if (status) |
1940 | return status; | |
1941 | if ((*buflen -= 4) < 0) | |
1942 | return nfserr_resource; | |
1943 | WRITE32(fslocs->locations_count); | |
1944 | for (i=0; i<fslocs->locations_count; i++) { | |
1945 | status = nfsd4_encode_fs_location4(&fslocs->locations[i], | |
1946 | &p, buflen); | |
1947 | if (status) | |
1948 | return status; | |
1949 | } | |
1950 | *pp = p; | |
1951 | return 0; | |
1952 | } | |
1da177e4 | 1953 | |
3d2544b1 BF |
1954 | static u32 nfs4_file_type(umode_t mode) |
1955 | { | |
1956 | switch (mode & S_IFMT) { | |
1957 | case S_IFIFO: return NF4FIFO; | |
1958 | case S_IFCHR: return NF4CHR; | |
1959 | case S_IFDIR: return NF4DIR; | |
1960 | case S_IFBLK: return NF4BLK; | |
1961 | case S_IFLNK: return NF4LNK; | |
1962 | case S_IFREG: return NF4REG; | |
1963 | case S_IFSOCK: return NF4SOCK; | |
1964 | default: return NF4BAD; | |
1965 | }; | |
1966 | } | |
1da177e4 | 1967 | |
b37ad28b | 1968 | static __be32 |
ab8e4aee | 1969 | nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, kuid_t uid, kgid_t gid, |
2ebbc012 | 1970 | __be32 **p, int *buflen) |
1da177e4 LT |
1971 | { |
1972 | int status; | |
1973 | ||
1974 | if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) | |
1975 | return nfserr_resource; | |
1976 | if (whotype != NFS4_ACL_WHO_NAMED) | |
1977 | status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); | |
ab8e4aee EB |
1978 | else if (gid_valid(gid)) |
1979 | status = nfsd_map_gid_to_name(rqstp, gid, (u8 *)(*p + 1)); | |
1da177e4 | 1980 | else |
ab8e4aee | 1981 | status = nfsd_map_uid_to_name(rqstp, uid, (u8 *)(*p + 1)); |
1da177e4 LT |
1982 | if (status < 0) |
1983 | return nfserrno(status); | |
1984 | *p = xdr_encode_opaque(*p, NULL, status); | |
1985 | *buflen -= (XDR_QUADLEN(status) << 2) + 4; | |
1986 | BUG_ON(*buflen < 0); | |
1987 | return 0; | |
1988 | } | |
1989 | ||
b37ad28b | 1990 | static inline __be32 |
ab8e4aee | 1991 | nfsd4_encode_user(struct svc_rqst *rqstp, kuid_t user, __be32 **p, int *buflen) |
1da177e4 | 1992 | { |
ab8e4aee EB |
1993 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, user, INVALID_GID, |
1994 | p, buflen); | |
1da177e4 LT |
1995 | } |
1996 | ||
b37ad28b | 1997 | static inline __be32 |
ab8e4aee | 1998 | nfsd4_encode_group(struct svc_rqst *rqstp, kgid_t group, __be32 **p, int *buflen) |
1da177e4 | 1999 | { |
ab8e4aee EB |
2000 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, INVALID_UID, group, |
2001 | p, buflen); | |
1da177e4 LT |
2002 | } |
2003 | ||
b37ad28b | 2004 | static inline __be32 |
ab8e4aee | 2005 | nfsd4_encode_aclname(struct svc_rqst *rqstp, struct nfs4_ace *ace, |
2ebbc012 | 2006 | __be32 **p, int *buflen) |
1da177e4 | 2007 | { |
ab8e4aee EB |
2008 | kuid_t uid = INVALID_UID; |
2009 | kgid_t gid = INVALID_GID; | |
2010 | ||
2011 | if (ace->whotype == NFS4_ACL_WHO_NAMED) { | |
2012 | if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) | |
2013 | gid = ace->who_gid; | |
2014 | else | |
2015 | uid = ace->who_uid; | |
2016 | } | |
2017 | return nfsd4_encode_name(rqstp, ace->whotype, uid, gid, p, buflen); | |
1da177e4 LT |
2018 | } |
2019 | ||
42ca0993 BF |
2020 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
2021 | FATTR4_WORD0_RDATTR_ERROR) | |
2022 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
2023 | ||
18032ca0 DQ |
2024 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
2025 | static inline __be32 | |
2026 | nfsd4_encode_security_label(struct svc_rqst *rqstp, void *context, int len, __be32 **pp, int *buflen) | |
2027 | { | |
2028 | __be32 *p = *pp; | |
2029 | ||
2030 | if (*buflen < ((XDR_QUADLEN(len) << 2) + 4 + 4 + 4)) | |
2031 | return nfserr_resource; | |
2032 | ||
2033 | /* | |
2034 | * For now we use a 0 here to indicate the null translation; in | |
2035 | * the future we may place a call to translation code here. | |
2036 | */ | |
2037 | if ((*buflen -= 8) < 0) | |
2038 | return nfserr_resource; | |
2039 | ||
2040 | WRITE32(0); /* lfs */ | |
2041 | WRITE32(0); /* pi */ | |
2042 | p = xdr_encode_opaque(p, context, len); | |
2043 | *buflen -= (XDR_QUADLEN(len) << 2) + 4; | |
2044 | ||
2045 | *pp = p; | |
2046 | return 0; | |
2047 | } | |
2048 | #else | |
2049 | static inline __be32 | |
ba4e55bb | 2050 | nfsd4_encode_security_label(struct svc_rqst *rqstp, void *context, int len, __be32 **pp, int *buflen) |
18032ca0 DQ |
2051 | { return 0; } |
2052 | #endif | |
2053 | ||
b37ad28b | 2054 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
42ca0993 BF |
2055 | { |
2056 | /* As per referral draft: */ | |
2057 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
2058 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
2059 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
2060 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
2061 | *rdattr_err = NFSERR_MOVED; | |
2062 | else | |
2063 | return nfserr_moved; | |
2064 | } | |
2065 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
2066 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
2067 | return 0; | |
2068 | } | |
1da177e4 | 2069 | |
ae7095a7 BF |
2070 | |
2071 | static int get_parent_attributes(struct svc_export *exp, struct kstat *stat) | |
2072 | { | |
2073 | struct path path = exp->ex_path; | |
2074 | int err; | |
2075 | ||
2076 | path_get(&path); | |
2077 | while (follow_up(&path)) { | |
2078 | if (path.dentry != path.mnt->mnt_root) | |
2079 | break; | |
2080 | } | |
3dadecce | 2081 | err = vfs_getattr(&path, stat); |
ae7095a7 BF |
2082 | path_put(&path); |
2083 | return err; | |
2084 | } | |
2085 | ||
1da177e4 LT |
2086 | /* |
2087 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
2088 | * ourselves. | |
2089 | * | |
84822d0b | 2090 | * countp is the buffer size in _words_ |
1da177e4 | 2091 | */ |
b37ad28b | 2092 | __be32 |
1da177e4 | 2093 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, |
84822d0b | 2094 | struct dentry *dentry, __be32 **buffer, int count, u32 *bmval, |
406a7ea9 | 2095 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
2096 | { |
2097 | u32 bmval0 = bmval[0]; | |
2098 | u32 bmval1 = bmval[1]; | |
7e705706 | 2099 | u32 bmval2 = bmval[2]; |
1da177e4 LT |
2100 | struct kstat stat; |
2101 | struct svc_fh tempfh; | |
2102 | struct kstatfs statfs; | |
84822d0b | 2103 | int buflen = count << 2; |
2ebbc012 | 2104 | __be32 *attrlenp; |
1da177e4 LT |
2105 | u32 dummy; |
2106 | u64 dummy64; | |
42ca0993 | 2107 | u32 rdattr_err = 0; |
84822d0b | 2108 | __be32 *p = *buffer; |
b37ad28b | 2109 | __be32 status; |
b8dd7b9a | 2110 | int err; |
1da177e4 LT |
2111 | int aclsupport = 0; |
2112 | struct nfs4_acl *acl = NULL; | |
18032ca0 DQ |
2113 | void *context = NULL; |
2114 | int contextlen; | |
2115 | bool contextsupport = false; | |
7e705706 AA |
2116 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
2117 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
2118 | struct path path = { |
2119 | .mnt = exp->ex_path.mnt, | |
2120 | .dentry = dentry, | |
2121 | }; | |
3d733711 | 2122 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
1da177e4 LT |
2123 | |
2124 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
7e705706 AA |
2125 | BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); |
2126 | BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); | |
2127 | BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); | |
1da177e4 | 2128 | |
42ca0993 | 2129 | if (exp->ex_fslocs.migrated) { |
7e705706 | 2130 | BUG_ON(bmval[2]); |
42ca0993 BF |
2131 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); |
2132 | if (status) | |
2133 | goto out; | |
2134 | } | |
2135 | ||
3dadecce | 2136 | err = vfs_getattr(&path, &stat); |
b8dd7b9a | 2137 | if (err) |
1da177e4 | 2138 | goto out_nfserr; |
a16e92ed BF |
2139 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | |
2140 | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
2141 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
2142 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 2143 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 2144 | if (err) |
1da177e4 LT |
2145 | goto out_nfserr; |
2146 | } | |
2147 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
2148 | fh_init(&tempfh, NFS4_FHSIZE); | |
2149 | status = fh_compose(&tempfh, exp, dentry, NULL); | |
2150 | if (status) | |
2151 | goto out; | |
2152 | fhp = &tempfh; | |
2153 | } | |
2154 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
2155 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
b8dd7b9a AV |
2156 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
2157 | aclsupport = (err == 0); | |
1da177e4 | 2158 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 2159 | if (err == -EOPNOTSUPP) |
1da177e4 | 2160 | bmval0 &= ~FATTR4_WORD0_ACL; |
b8dd7b9a | 2161 | else if (err == -EINVAL) { |
1da177e4 LT |
2162 | status = nfserr_attrnotsupp; |
2163 | goto out; | |
b8dd7b9a | 2164 | } else if (err != 0) |
1da177e4 LT |
2165 | goto out_nfserr; |
2166 | } | |
2167 | } | |
1da177e4 | 2168 | |
18032ca0 DQ |
2169 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
2170 | if ((bmval[2] & FATTR4_WORD2_SECURITY_LABEL) || | |
2171 | bmval[0] & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
2172 | err = security_inode_getsecctx(dentry->d_inode, | |
2173 | &context, &contextlen); | |
2174 | contextsupport = (err == 0); | |
2175 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { | |
2176 | if (err == -EOPNOTSUPP) | |
2177 | bmval2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2178 | else if (err) | |
2179 | goto out_nfserr; | |
2180 | } | |
2181 | } | |
2182 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ | |
2183 | ||
2b44f1ba BH |
2184 | if (bmval2) { |
2185 | if ((buflen -= 16) < 0) | |
2186 | goto out_resource; | |
7e705706 AA |
2187 | WRITE32(3); |
2188 | WRITE32(bmval0); | |
2189 | WRITE32(bmval1); | |
2190 | WRITE32(bmval2); | |
2b44f1ba BH |
2191 | } else if (bmval1) { |
2192 | if ((buflen -= 12) < 0) | |
2193 | goto out_resource; | |
7e705706 AA |
2194 | WRITE32(2); |
2195 | WRITE32(bmval0); | |
2196 | WRITE32(bmval1); | |
2197 | } else { | |
2b44f1ba BH |
2198 | if ((buflen -= 8) < 0) |
2199 | goto out_resource; | |
7e705706 AA |
2200 | WRITE32(1); |
2201 | WRITE32(bmval0); | |
2202 | } | |
1da177e4 LT |
2203 | attrlenp = p++; /* to be backfilled later */ |
2204 | ||
2205 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
7e705706 AA |
2206 | u32 word0 = nfsd_suppattrs0(minorversion); |
2207 | u32 word1 = nfsd_suppattrs1(minorversion); | |
2208 | u32 word2 = nfsd_suppattrs2(minorversion); | |
2209 | ||
42ca0993 BF |
2210 | if (!aclsupport) |
2211 | word0 &= ~FATTR4_WORD0_ACL; | |
18032ca0 DQ |
2212 | if (!contextsupport) |
2213 | word2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
7e705706 | 2214 | if (!word2) { |
2b44f1ba BH |
2215 | if ((buflen -= 12) < 0) |
2216 | goto out_resource; | |
7e705706 AA |
2217 | WRITE32(2); |
2218 | WRITE32(word0); | |
2219 | WRITE32(word1); | |
2220 | } else { | |
2b44f1ba BH |
2221 | if ((buflen -= 16) < 0) |
2222 | goto out_resource; | |
7e705706 AA |
2223 | WRITE32(3); |
2224 | WRITE32(word0); | |
2225 | WRITE32(word1); | |
2226 | WRITE32(word2); | |
2227 | } | |
1da177e4 LT |
2228 | } |
2229 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
2230 | if ((buflen -= 4) < 0) | |
2231 | goto out_resource; | |
3d2544b1 | 2232 | dummy = nfs4_file_type(stat.mode); |
6b6d8137 BF |
2233 | if (dummy == NF4BAD) { |
2234 | status = nfserr_serverfault; | |
2235 | goto out; | |
2236 | } | |
1da177e4 LT |
2237 | WRITE32(dummy); |
2238 | } | |
2239 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
2240 | if ((buflen -= 4) < 0) | |
2241 | goto out_resource; | |
49640001 | 2242 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
e34ac862 | 2243 | WRITE32(NFS4_FH_PERSISTENT); |
49640001 | 2244 | else |
e34ac862 | 2245 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
1da177e4 LT |
2246 | } |
2247 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
1da177e4 LT |
2248 | if ((buflen -= 8) < 0) |
2249 | goto out_resource; | |
c654b8a9 | 2250 | write_change(&p, &stat, dentry->d_inode); |
1da177e4 LT |
2251 | } |
2252 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
2253 | if ((buflen -= 8) < 0) | |
2254 | goto out_resource; | |
2255 | WRITE64(stat.size); | |
2256 | } | |
2257 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
2258 | if ((buflen -= 4) < 0) | |
2259 | goto out_resource; | |
2260 | WRITE32(1); | |
2261 | } | |
2262 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
2263 | if ((buflen -= 4) < 0) | |
2264 | goto out_resource; | |
2265 | WRITE32(1); | |
2266 | } | |
2267 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
2268 | if ((buflen -= 4) < 0) | |
2269 | goto out_resource; | |
2270 | WRITE32(0); | |
2271 | } | |
2272 | if (bmval0 & FATTR4_WORD0_FSID) { | |
2273 | if ((buflen -= 16) < 0) | |
2274 | goto out_resource; | |
42ca0993 BF |
2275 | if (exp->ex_fslocs.migrated) { |
2276 | WRITE64(NFS4_REFERRAL_FSID_MAJOR); | |
2277 | WRITE64(NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
2278 | } else switch(fsid_source(fhp)) { |
2279 | case FSIDSOURCE_FSID: | |
1da177e4 LT |
2280 | WRITE64((u64)exp->ex_fsid); |
2281 | WRITE64((u64)0); | |
af6a4e28 N |
2282 | break; |
2283 | case FSIDSOURCE_DEV: | |
1da177e4 LT |
2284 | WRITE32(0); |
2285 | WRITE32(MAJOR(stat.dev)); | |
2286 | WRITE32(0); | |
2287 | WRITE32(MINOR(stat.dev)); | |
af6a4e28 N |
2288 | break; |
2289 | case FSIDSOURCE_UUID: | |
2290 | WRITEMEM(exp->ex_uuid, 16); | |
2291 | break; | |
1da177e4 LT |
2292 | } |
2293 | } | |
2294 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
2295 | if ((buflen -= 4) < 0) | |
2296 | goto out_resource; | |
2297 | WRITE32(0); | |
2298 | } | |
2299 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
2300 | if ((buflen -= 4) < 0) | |
2301 | goto out_resource; | |
3d733711 | 2302 | WRITE32(nn->nfsd4_lease); |
1da177e4 LT |
2303 | } |
2304 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
2305 | if ((buflen -= 4) < 0) | |
2306 | goto out_resource; | |
42ca0993 | 2307 | WRITE32(rdattr_err); |
1da177e4 LT |
2308 | } |
2309 | if (bmval0 & FATTR4_WORD0_ACL) { | |
2310 | struct nfs4_ace *ace; | |
1da177e4 LT |
2311 | |
2312 | if (acl == NULL) { | |
2313 | if ((buflen -= 4) < 0) | |
2314 | goto out_resource; | |
2315 | ||
2316 | WRITE32(0); | |
2317 | goto out_acl; | |
2318 | } | |
2319 | if ((buflen -= 4) < 0) | |
2320 | goto out_resource; | |
2321 | WRITE32(acl->naces); | |
2322 | ||
28e05dd8 | 2323 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
1da177e4 LT |
2324 | if ((buflen -= 4*3) < 0) |
2325 | goto out_resource; | |
2326 | WRITE32(ace->type); | |
2327 | WRITE32(ace->flag); | |
2328 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); | |
ab8e4aee | 2329 | status = nfsd4_encode_aclname(rqstp, ace, &p, &buflen); |
1da177e4 LT |
2330 | if (status) |
2331 | goto out; | |
2332 | } | |
2333 | } | |
2334 | out_acl: | |
2335 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
2336 | if ((buflen -= 4) < 0) | |
2337 | goto out_resource; | |
2338 | WRITE32(aclsupport ? | |
2339 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); | |
2340 | } | |
2341 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
2342 | if ((buflen -= 4) < 0) | |
2343 | goto out_resource; | |
2344 | WRITE32(1); | |
2345 | } | |
2346 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
2347 | if ((buflen -= 4) < 0) | |
2348 | goto out_resource; | |
2930d381 | 2349 | WRITE32(0); |
1da177e4 LT |
2350 | } |
2351 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
2352 | if ((buflen -= 4) < 0) | |
2353 | goto out_resource; | |
2354 | WRITE32(1); | |
2355 | } | |
2356 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
2357 | if ((buflen -= 4) < 0) | |
2358 | goto out_resource; | |
2359 | WRITE32(1); | |
2360 | } | |
2361 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
2362 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; | |
2363 | if (buflen < 0) | |
2364 | goto out_resource; | |
2365 | WRITE32(fhp->fh_handle.fh_size); | |
2366 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); | |
2367 | } | |
2368 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
2369 | if ((buflen -= 8) < 0) | |
2370 | goto out_resource; | |
40ee5dc6 | 2371 | WRITE64(stat.ino); |
1da177e4 LT |
2372 | } |
2373 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
2374 | if ((buflen -= 8) < 0) | |
2375 | goto out_resource; | |
2376 | WRITE64((u64) statfs.f_ffree); | |
2377 | } | |
2378 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
2379 | if ((buflen -= 8) < 0) | |
2380 | goto out_resource; | |
2381 | WRITE64((u64) statfs.f_ffree); | |
2382 | } | |
2383 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
2384 | if ((buflen -= 8) < 0) | |
2385 | goto out_resource; | |
2386 | WRITE64((u64) statfs.f_files); | |
2387 | } | |
81c3f413 BF |
2388 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
2389 | status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); | |
81c3f413 BF |
2390 | if (status) |
2391 | goto out; | |
2392 | } | |
1da177e4 LT |
2393 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
2394 | if ((buflen -= 4) < 0) | |
2395 | goto out_resource; | |
2396 | WRITE32(1); | |
2397 | } | |
2398 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
2399 | if ((buflen -= 8) < 0) | |
2400 | goto out_resource; | |
aea240f4 | 2401 | WRITE64(exp->ex_path.mnt->mnt_sb->s_maxbytes); |
1da177e4 LT |
2402 | } |
2403 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
2404 | if ((buflen -= 4) < 0) | |
2405 | goto out_resource; | |
2406 | WRITE32(255); | |
2407 | } | |
2408 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
2409 | if ((buflen -= 4) < 0) | |
2410 | goto out_resource; | |
a16e92ed | 2411 | WRITE32(statfs.f_namelen); |
1da177e4 LT |
2412 | } |
2413 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
2414 | if ((buflen -= 8) < 0) | |
2415 | goto out_resource; | |
7adae489 | 2416 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2417 | } |
2418 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
2419 | if ((buflen -= 8) < 0) | |
2420 | goto out_resource; | |
7adae489 | 2421 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2422 | } |
2423 | if (bmval1 & FATTR4_WORD1_MODE) { | |
2424 | if ((buflen -= 4) < 0) | |
2425 | goto out_resource; | |
2426 | WRITE32(stat.mode & S_IALLUGO); | |
2427 | } | |
2428 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
2429 | if ((buflen -= 4) < 0) | |
2430 | goto out_resource; | |
2431 | WRITE32(1); | |
2432 | } | |
2433 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
2434 | if ((buflen -= 4) < 0) | |
2435 | goto out_resource; | |
2436 | WRITE32(stat.nlink); | |
2437 | } | |
2438 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
2439 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); | |
1da177e4 LT |
2440 | if (status) |
2441 | goto out; | |
2442 | } | |
2443 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
2444 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); | |
1da177e4 LT |
2445 | if (status) |
2446 | goto out; | |
2447 | } | |
2448 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
2449 | if ((buflen -= 8) < 0) | |
2450 | goto out_resource; | |
2451 | WRITE32((u32) MAJOR(stat.rdev)); | |
2452 | WRITE32((u32) MINOR(stat.rdev)); | |
2453 | } | |
2454 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
2455 | if ((buflen -= 8) < 0) | |
2456 | goto out_resource; | |
2457 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
2458 | WRITE64(dummy64); | |
2459 | } | |
2460 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
2461 | if ((buflen -= 8) < 0) | |
2462 | goto out_resource; | |
2463 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
2464 | WRITE64(dummy64); | |
2465 | } | |
2466 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
2467 | if ((buflen -= 8) < 0) | |
2468 | goto out_resource; | |
2469 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
2470 | WRITE64(dummy64); | |
2471 | } | |
2472 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
2473 | if ((buflen -= 8) < 0) | |
2474 | goto out_resource; | |
2475 | dummy64 = (u64)stat.blocks << 9; | |
2476 | WRITE64(dummy64); | |
2477 | } | |
2478 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
2479 | if ((buflen -= 12) < 0) | |
2480 | goto out_resource; | |
bf8d9097 | 2481 | WRITE64((s64)stat.atime.tv_sec); |
1da177e4 LT |
2482 | WRITE32(stat.atime.tv_nsec); |
2483 | } | |
2484 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
2485 | if ((buflen -= 12) < 0) | |
2486 | goto out_resource; | |
2487 | WRITE32(0); | |
2488 | WRITE32(1); | |
2489 | WRITE32(0); | |
2490 | } | |
2491 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
2492 | if ((buflen -= 12) < 0) | |
2493 | goto out_resource; | |
bf8d9097 | 2494 | WRITE64((s64)stat.ctime.tv_sec); |
1da177e4 LT |
2495 | WRITE32(stat.ctime.tv_nsec); |
2496 | } | |
2497 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
2498 | if ((buflen -= 12) < 0) | |
2499 | goto out_resource; | |
bf8d9097 | 2500 | WRITE64((s64)stat.mtime.tv_sec); |
1da177e4 LT |
2501 | WRITE32(stat.mtime.tv_nsec); |
2502 | } | |
2503 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
1da177e4 LT |
2504 | if ((buflen -= 8) < 0) |
2505 | goto out_resource; | |
406a7ea9 FF |
2506 | /* |
2507 | * Get parent's attributes if not ignoring crossmount | |
2508 | * and this is the root of a cross-mounted filesystem. | |
2509 | */ | |
2510 | if (ignore_crossmnt == 0 && | |
ae7095a7 BF |
2511 | dentry == exp->ex_path.mnt->mnt_root) |
2512 | get_parent_attributes(exp, &stat); | |
40ee5dc6 | 2513 | WRITE64(stat.ino); |
1da177e4 | 2514 | } |
18032ca0 DQ |
2515 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { |
2516 | status = nfsd4_encode_security_label(rqstp, context, | |
2517 | contextlen, &p, &buflen); | |
2518 | if (status) | |
2519 | goto out; | |
2520 | } | |
8c18f205 BH |
2521 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
2522 | WRITE32(3); | |
2523 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0); | |
2524 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1); | |
2525 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2); | |
2526 | } | |
7e705706 | 2527 | |
1da177e4 | 2528 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); |
84822d0b | 2529 | *buffer = p; |
1da177e4 LT |
2530 | status = nfs_ok; |
2531 | ||
2532 | out: | |
ba4e55bb | 2533 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
18032ca0 DQ |
2534 | if (context) |
2535 | security_release_secctx(context, contextlen); | |
ba4e55bb | 2536 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ |
28e05dd8 | 2537 | kfree(acl); |
1da177e4 LT |
2538 | if (fhp == &tempfh) |
2539 | fh_put(&tempfh); | |
2540 | return status; | |
2541 | out_nfserr: | |
b8dd7b9a | 2542 | status = nfserrno(err); |
1da177e4 LT |
2543 | goto out; |
2544 | out_resource: | |
1da177e4 LT |
2545 | status = nfserr_resource; |
2546 | goto out; | |
1da177e4 LT |
2547 | } |
2548 | ||
c0ce6ec8 BF |
2549 | static inline int attributes_need_mount(u32 *bmval) |
2550 | { | |
2551 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2552 | return 1; | |
2553 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2554 | return 1; | |
2555 | return 0; | |
2556 | } | |
2557 | ||
b37ad28b | 2558 | static __be32 |
1da177e4 | 2559 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, |
84822d0b | 2560 | const char *name, int namlen, __be32 **p, int buflen) |
1da177e4 LT |
2561 | { |
2562 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2563 | struct dentry *dentry; | |
b37ad28b | 2564 | __be32 nfserr; |
406a7ea9 | 2565 | int ignore_crossmnt = 0; |
1da177e4 LT |
2566 | |
2567 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
2568 | if (IS_ERR(dentry)) | |
2569 | return nfserrno(PTR_ERR(dentry)); | |
b2c0cea6 BF |
2570 | if (!dentry->d_inode) { |
2571 | /* | |
2572 | * nfsd_buffered_readdir drops the i_mutex between | |
2573 | * readdir and calling this callback, leaving a window | |
2574 | * where this directory entry could have gone away. | |
2575 | */ | |
2576 | dput(dentry); | |
2577 | return nfserr_noent; | |
2578 | } | |
1da177e4 LT |
2579 | |
2580 | exp_get(exp); | |
406a7ea9 FF |
2581 | /* |
2582 | * In the case of a mountpoint, the client may be asking for | |
2583 | * attributes that are only properties of the underlying filesystem | |
2584 | * as opposed to the cross-mounted file system. In such a case, | |
2585 | * we will not follow the cross mount and will fill the attribtutes | |
2586 | * directly from the mountpoint dentry. | |
2587 | */ | |
3227fa41 | 2588 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
2589 | int err; |
2590 | ||
3227fa41 BF |
2591 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
2592 | && !attributes_need_mount(cd->rd_bmval)) { | |
2593 | ignore_crossmnt = 1; | |
2594 | goto out_encode; | |
2595 | } | |
dcb488a3 AA |
2596 | /* |
2597 | * Why the heck aren't we just using nfsd_lookup?? | |
2598 | * Different "."/".." handling? Something else? | |
2599 | * At least, add a comment here to explain.... | |
2600 | */ | |
021d3a72 BF |
2601 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
2602 | if (err) { | |
2603 | nfserr = nfserrno(err); | |
1da177e4 LT |
2604 | goto out_put; |
2605 | } | |
dcb488a3 AA |
2606 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
2607 | if (nfserr) | |
2608 | goto out_put; | |
1da177e4 LT |
2609 | |
2610 | } | |
3227fa41 | 2611 | out_encode: |
1da177e4 | 2612 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, |
406a7ea9 | 2613 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
2614 | out_put: |
2615 | dput(dentry); | |
2616 | exp_put(exp); | |
2617 | return nfserr; | |
2618 | } | |
2619 | ||
2ebbc012 | 2620 | static __be32 * |
b37ad28b | 2621 | nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr) |
1da177e4 | 2622 | { |
1da177e4 LT |
2623 | if (buflen < 6) |
2624 | return NULL; | |
2625 | *p++ = htonl(2); | |
2626 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
2627 | *p++ = htonl(0); /* bmval1 */ | |
2628 | ||
87915c64 | 2629 | *p++ = htonl(4); /* attribute length */ |
1da177e4 | 2630 | *p++ = nfserr; /* no htonl */ |
1da177e4 LT |
2631 | return p; |
2632 | } | |
2633 | ||
2634 | static int | |
a0ad13ef N |
2635 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
2636 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 2637 | { |
a0ad13ef | 2638 | struct readdir_cd *ccd = ccdv; |
1da177e4 LT |
2639 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
2640 | int buflen; | |
2ebbc012 | 2641 | __be32 *p = cd->buffer; |
b2c0cea6 | 2642 | __be32 *cookiep; |
b37ad28b | 2643 | __be32 nfserr = nfserr_toosmall; |
1da177e4 LT |
2644 | |
2645 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
2646 | if (name && isdotent(name, namlen)) { | |
2647 | cd->common.err = nfs_ok; | |
2648 | return 0; | |
2649 | } | |
2650 | ||
2651 | if (cd->offset) | |
2652 | xdr_encode_hyper(cd->offset, (u64) offset); | |
2653 | ||
2654 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); | |
2655 | if (buflen < 0) | |
2656 | goto fail; | |
2657 | ||
2658 | *p++ = xdr_one; /* mark entry present */ | |
b2c0cea6 | 2659 | cookiep = p; |
1da177e4 LT |
2660 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
2661 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
2662 | ||
84822d0b | 2663 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, &p, buflen); |
1da177e4 LT |
2664 | switch (nfserr) { |
2665 | case nfs_ok: | |
1da177e4 LT |
2666 | break; |
2667 | case nfserr_resource: | |
2668 | nfserr = nfserr_toosmall; | |
2669 | goto fail; | |
b2c0cea6 BF |
2670 | case nfserr_noent: |
2671 | goto skip_entry; | |
1da177e4 LT |
2672 | default: |
2673 | /* | |
2674 | * If the client requested the RDATTR_ERROR attribute, | |
2675 | * we stuff the error code into this attribute | |
2676 | * and continue. If this attribute was not requested, | |
2677 | * then in accordance with the spec, we fail the | |
2678 | * entire READDIR operation(!) | |
2679 | */ | |
2680 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
2681 | goto fail; | |
1da177e4 | 2682 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
34081efc FI |
2683 | if (p == NULL) { |
2684 | nfserr = nfserr_toosmall; | |
1da177e4 | 2685 | goto fail; |
34081efc | 2686 | } |
1da177e4 LT |
2687 | } |
2688 | cd->buflen -= (p - cd->buffer); | |
2689 | cd->buffer = p; | |
b2c0cea6 BF |
2690 | cd->offset = cookiep; |
2691 | skip_entry: | |
1da177e4 LT |
2692 | cd->common.err = nfs_ok; |
2693 | return 0; | |
2694 | fail: | |
2695 | cd->common.err = nfserr; | |
2696 | return -EINVAL; | |
2697 | } | |
2698 | ||
e2f282b9 BH |
2699 | static void |
2700 | nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid) | |
2701 | { | |
bc749ca4 | 2702 | __be32 *p; |
e2f282b9 BH |
2703 | |
2704 | RESERVE_SPACE(sizeof(stateid_t)); | |
2705 | WRITE32(sid->si_generation); | |
2706 | WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
2707 | ADJUST_ARGS(); | |
2708 | } | |
2709 | ||
695e12f8 | 2710 | static __be32 |
b37ad28b | 2711 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 2712 | { |
bc749ca4 | 2713 | __be32 *p; |
1da177e4 LT |
2714 | |
2715 | if (!nfserr) { | |
2716 | RESERVE_SPACE(8); | |
2717 | WRITE32(access->ac_supported); | |
2718 | WRITE32(access->ac_resp_access); | |
2719 | ADJUST_ARGS(); | |
2720 | } | |
695e12f8 | 2721 | return nfserr; |
1da177e4 LT |
2722 | } |
2723 | ||
1d1bc8f2 BF |
2724 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
2725 | { | |
2726 | __be32 *p; | |
2727 | ||
2728 | if (!nfserr) { | |
2729 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 8); | |
2730 | WRITEMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
2731 | WRITE32(bcts->dir); | |
6e67b5d1 | 2732 | /* Sorry, we do not yet support RDMA over 4.1: */ |
1d1bc8f2 BF |
2733 | WRITE32(0); |
2734 | ADJUST_ARGS(); | |
2735 | } | |
2736 | return nfserr; | |
2737 | } | |
2738 | ||
695e12f8 | 2739 | static __be32 |
b37ad28b | 2740 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 | 2741 | { |
e2f282b9 BH |
2742 | if (!nfserr) |
2743 | nfsd4_encode_stateid(resp, &close->cl_stateid); | |
2744 | ||
695e12f8 | 2745 | return nfserr; |
1da177e4 LT |
2746 | } |
2747 | ||
2748 | ||
695e12f8 | 2749 | static __be32 |
b37ad28b | 2750 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 2751 | { |
bc749ca4 | 2752 | __be32 *p; |
1da177e4 LT |
2753 | |
2754 | if (!nfserr) { | |
ab4684d1 CL |
2755 | RESERVE_SPACE(NFS4_VERIFIER_SIZE); |
2756 | WRITEMEM(commit->co_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 LT |
2757 | ADJUST_ARGS(); |
2758 | } | |
695e12f8 | 2759 | return nfserr; |
1da177e4 LT |
2760 | } |
2761 | ||
695e12f8 | 2762 | static __be32 |
b37ad28b | 2763 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 2764 | { |
bc749ca4 | 2765 | __be32 *p; |
1da177e4 LT |
2766 | |
2767 | if (!nfserr) { | |
2768 | RESERVE_SPACE(32); | |
c654b8a9 | 2769 | write_cinfo(&p, &create->cr_cinfo); |
1da177e4 LT |
2770 | WRITE32(2); |
2771 | WRITE32(create->cr_bmval[0]); | |
2772 | WRITE32(create->cr_bmval[1]); | |
2773 | ADJUST_ARGS(); | |
2774 | } | |
695e12f8 | 2775 | return nfserr; |
1da177e4 LT |
2776 | } |
2777 | ||
b37ad28b AV |
2778 | static __be32 |
2779 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
2780 | { |
2781 | struct svc_fh *fhp = getattr->ga_fhp; | |
2782 | int buflen; | |
2783 | ||
2784 | if (nfserr) | |
2785 | return nfserr; | |
2786 | ||
2787 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); | |
2788 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, | |
84822d0b | 2789 | &resp->p, buflen, getattr->ga_bmval, |
406a7ea9 | 2790 | resp->rqstp, 0); |
1da177e4 LT |
2791 | return nfserr; |
2792 | } | |
2793 | ||
695e12f8 BH |
2794 | static __be32 |
2795 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 2796 | { |
695e12f8 | 2797 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 2798 | unsigned int len; |
bc749ca4 | 2799 | __be32 *p; |
1da177e4 LT |
2800 | |
2801 | if (!nfserr) { | |
2802 | len = fhp->fh_handle.fh_size; | |
2803 | RESERVE_SPACE(len + 4); | |
2804 | WRITE32(len); | |
2805 | WRITEMEM(&fhp->fh_handle.fh_base, len); | |
2806 | ADJUST_ARGS(); | |
2807 | } | |
695e12f8 | 2808 | return nfserr; |
1da177e4 LT |
2809 | } |
2810 | ||
2811 | /* | |
2812 | * Including all fields other than the name, a LOCK4denied structure requires | |
2813 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
2814 | */ | |
2815 | static void | |
2816 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) | |
2817 | { | |
7c13f344 | 2818 | struct xdr_netobj *conf = &ld->ld_owner; |
bc749ca4 | 2819 | __be32 *p; |
1da177e4 | 2820 | |
7c13f344 | 2821 | RESERVE_SPACE(32 + XDR_LEN(conf->len)); |
1da177e4 LT |
2822 | WRITE64(ld->ld_start); |
2823 | WRITE64(ld->ld_length); | |
2824 | WRITE32(ld->ld_type); | |
7c13f344 | 2825 | if (conf->len) { |
1da177e4 | 2826 | WRITEMEM(&ld->ld_clientid, 8); |
7c13f344 BF |
2827 | WRITE32(conf->len); |
2828 | WRITEMEM(conf->data, conf->len); | |
2829 | kfree(conf->data); | |
1da177e4 LT |
2830 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
2831 | WRITE64((u64)0); /* clientid */ | |
2832 | WRITE32(0); /* length of owner name */ | |
2833 | } | |
2834 | ADJUST_ARGS(); | |
2835 | } | |
2836 | ||
695e12f8 | 2837 | static __be32 |
b37ad28b | 2838 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 2839 | { |
e2f282b9 BH |
2840 | if (!nfserr) |
2841 | nfsd4_encode_stateid(resp, &lock->lk_resp_stateid); | |
2842 | else if (nfserr == nfserr_denied) | |
1da177e4 LT |
2843 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); |
2844 | ||
695e12f8 | 2845 | return nfserr; |
1da177e4 LT |
2846 | } |
2847 | ||
695e12f8 | 2848 | static __be32 |
b37ad28b | 2849 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 LT |
2850 | { |
2851 | if (nfserr == nfserr_denied) | |
2852 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); | |
695e12f8 | 2853 | return nfserr; |
1da177e4 LT |
2854 | } |
2855 | ||
695e12f8 | 2856 | static __be32 |
b37ad28b | 2857 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 | 2858 | { |
e2f282b9 BH |
2859 | if (!nfserr) |
2860 | nfsd4_encode_stateid(resp, &locku->lu_stateid); | |
2861 | ||
695e12f8 | 2862 | return nfserr; |
1da177e4 LT |
2863 | } |
2864 | ||
2865 | ||
695e12f8 | 2866 | static __be32 |
b37ad28b | 2867 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 2868 | { |
bc749ca4 | 2869 | __be32 *p; |
1da177e4 LT |
2870 | |
2871 | if (!nfserr) { | |
2872 | RESERVE_SPACE(20); | |
c654b8a9 | 2873 | write_cinfo(&p, &link->li_cinfo); |
1da177e4 LT |
2874 | ADJUST_ARGS(); |
2875 | } | |
695e12f8 | 2876 | return nfserr; |
1da177e4 LT |
2877 | } |
2878 | ||
2879 | ||
695e12f8 | 2880 | static __be32 |
b37ad28b | 2881 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 2882 | { |
bc749ca4 | 2883 | __be32 *p; |
1da177e4 LT |
2884 | |
2885 | if (nfserr) | |
2886 | goto out; | |
2887 | ||
e2f282b9 BH |
2888 | nfsd4_encode_stateid(resp, &open->op_stateid); |
2889 | RESERVE_SPACE(40); | |
c654b8a9 | 2890 | write_cinfo(&p, &open->op_cinfo); |
1da177e4 LT |
2891 | WRITE32(open->op_rflags); |
2892 | WRITE32(2); | |
2893 | WRITE32(open->op_bmval[0]); | |
2894 | WRITE32(open->op_bmval[1]); | |
2895 | WRITE32(open->op_delegate_type); | |
2896 | ADJUST_ARGS(); | |
2897 | ||
2898 | switch (open->op_delegate_type) { | |
2899 | case NFS4_OPEN_DELEGATE_NONE: | |
2900 | break; | |
2901 | case NFS4_OPEN_DELEGATE_READ: | |
e2f282b9 BH |
2902 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2903 | RESERVE_SPACE(20); | |
7b190fec | 2904 | WRITE32(open->op_recall); |
1da177e4 LT |
2905 | |
2906 | /* | |
2907 | * TODO: ACE's in delegations | |
2908 | */ | |
2909 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2910 | WRITE32(0); | |
2911 | WRITE32(0); | |
2912 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2913 | ADJUST_ARGS(); | |
2914 | break; | |
2915 | case NFS4_OPEN_DELEGATE_WRITE: | |
e2f282b9 BH |
2916 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2917 | RESERVE_SPACE(32); | |
1da177e4 LT |
2918 | WRITE32(0); |
2919 | ||
2920 | /* | |
2921 | * TODO: space_limit's in delegations | |
2922 | */ | |
2923 | WRITE32(NFS4_LIMIT_SIZE); | |
2924 | WRITE32(~(u32)0); | |
2925 | WRITE32(~(u32)0); | |
2926 | ||
2927 | /* | |
2928 | * TODO: ACE's in delegations | |
2929 | */ | |
2930 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2931 | WRITE32(0); | |
2932 | WRITE32(0); | |
2933 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2934 | ADJUST_ARGS(); | |
2935 | break; | |
d24433cd BH |
2936 | case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */ |
2937 | switch (open->op_why_no_deleg) { | |
2938 | case WND4_CONTENTION: | |
2939 | case WND4_RESOURCE: | |
2940 | RESERVE_SPACE(8); | |
2941 | WRITE32(open->op_why_no_deleg); | |
2942 | WRITE32(0); /* deleg signaling not supported yet */ | |
2943 | break; | |
2944 | default: | |
2945 | RESERVE_SPACE(4); | |
2946 | WRITE32(open->op_why_no_deleg); | |
2947 | } | |
2948 | ADJUST_ARGS(); | |
2949 | break; | |
1da177e4 LT |
2950 | default: |
2951 | BUG(); | |
2952 | } | |
2953 | /* XXX save filehandle here */ | |
2954 | out: | |
695e12f8 | 2955 | return nfserr; |
1da177e4 LT |
2956 | } |
2957 | ||
695e12f8 | 2958 | static __be32 |
b37ad28b | 2959 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 | 2960 | { |
e2f282b9 BH |
2961 | if (!nfserr) |
2962 | nfsd4_encode_stateid(resp, &oc->oc_resp_stateid); | |
1da177e4 | 2963 | |
695e12f8 | 2964 | return nfserr; |
1da177e4 LT |
2965 | } |
2966 | ||
695e12f8 | 2967 | static __be32 |
b37ad28b | 2968 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 | 2969 | { |
e2f282b9 BH |
2970 | if (!nfserr) |
2971 | nfsd4_encode_stateid(resp, &od->od_stateid); | |
1da177e4 | 2972 | |
695e12f8 | 2973 | return nfserr; |
1da177e4 LT |
2974 | } |
2975 | ||
b37ad28b AV |
2976 | static __be32 |
2977 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
44524359 | 2978 | struct nfsd4_read *read) |
1da177e4 LT |
2979 | { |
2980 | u32 eof; | |
afc59400 BF |
2981 | int v; |
2982 | struct page *page; | |
1da177e4 LT |
2983 | unsigned long maxcount; |
2984 | long len; | |
bc749ca4 | 2985 | __be32 *p; |
1da177e4 LT |
2986 | |
2987 | if (nfserr) | |
2988 | return nfserr; | |
2989 | if (resp->xbuf->page_len) | |
2990 | return nfserr_resource; | |
2991 | ||
2992 | RESERVE_SPACE(8); /* eof flag and byte count */ | |
2993 | ||
7adae489 | 2994 | maxcount = svc_max_payload(resp->rqstp); |
1da177e4 LT |
2995 | if (maxcount > read->rd_length) |
2996 | maxcount = read->rd_length; | |
2997 | ||
2998 | len = maxcount; | |
2999 | v = 0; | |
3000 | while (len > 0) { | |
afc59400 BF |
3001 | page = *(resp->rqstp->rq_next_page); |
3002 | if (!page) { /* ran out of pages */ | |
d5f50b0c BF |
3003 | maxcount -= len; |
3004 | break; | |
3005 | } | |
afc59400 | 3006 | resp->rqstp->rq_vec[v].iov_base = page_address(page); |
3cc03b16 | 3007 | resp->rqstp->rq_vec[v].iov_len = |
44524359 | 3008 | len < PAGE_SIZE ? len : PAGE_SIZE; |
afc59400 | 3009 | resp->rqstp->rq_next_page++; |
1da177e4 LT |
3010 | v++; |
3011 | len -= PAGE_SIZE; | |
3012 | } | |
3013 | read->rd_vlen = v; | |
3014 | ||
039a87ca | 3015 | nfserr = nfsd_read_file(read->rd_rqstp, read->rd_fhp, read->rd_filp, |
3cc03b16 | 3016 | read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, |
1da177e4 LT |
3017 | &maxcount); |
3018 | ||
1da177e4 LT |
3019 | if (nfserr) |
3020 | return nfserr; | |
44524359 N |
3021 | eof = (read->rd_offset + maxcount >= |
3022 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 LT |
3023 | |
3024 | WRITE32(eof); | |
3025 | WRITE32(maxcount); | |
3026 | ADJUST_ARGS(); | |
6ed6decc N |
3027 | resp->xbuf->head[0].iov_len = (char*)p |
3028 | - (char*)resp->xbuf->head[0].iov_base; | |
1da177e4 LT |
3029 | resp->xbuf->page_len = maxcount; |
3030 | ||
6ed6decc | 3031 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 3032 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 3033 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 3034 | if (maxcount&3) { |
6ed6decc N |
3035 | RESERVE_SPACE(4); |
3036 | WRITE32(0); | |
1da177e4 LT |
3037 | resp->xbuf->tail[0].iov_base += maxcount&3; |
3038 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 3039 | ADJUST_ARGS(); |
1da177e4 LT |
3040 | } |
3041 | return 0; | |
3042 | } | |
3043 | ||
b37ad28b AV |
3044 | static __be32 |
3045 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
3046 | { |
3047 | int maxcount; | |
3048 | char *page; | |
bc749ca4 | 3049 | __be32 *p; |
1da177e4 LT |
3050 | |
3051 | if (nfserr) | |
3052 | return nfserr; | |
3053 | if (resp->xbuf->page_len) | |
3054 | return nfserr_resource; | |
afc59400 | 3055 | if (!*resp->rqstp->rq_next_page) |
d5f50b0c | 3056 | return nfserr_resource; |
1da177e4 | 3057 | |
afc59400 | 3058 | page = page_address(*(resp->rqstp->rq_next_page++)); |
1da177e4 LT |
3059 | |
3060 | maxcount = PAGE_SIZE; | |
3061 | RESERVE_SPACE(4); | |
3062 | ||
3063 | /* | |
3064 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
3065 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
3066 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
3067 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
3068 | */ | |
3069 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); | |
3070 | if (nfserr == nfserr_isdir) | |
3071 | return nfserr_inval; | |
3072 | if (nfserr) | |
3073 | return nfserr; | |
3074 | ||
3075 | WRITE32(maxcount); | |
3076 | ADJUST_ARGS(); | |
6ed6decc N |
3077 | resp->xbuf->head[0].iov_len = (char*)p |
3078 | - (char*)resp->xbuf->head[0].iov_base; | |
3079 | resp->xbuf->page_len = maxcount; | |
1da177e4 | 3080 | |
6ed6decc | 3081 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 3082 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 3083 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 3084 | if (maxcount&3) { |
6ed6decc N |
3085 | RESERVE_SPACE(4); |
3086 | WRITE32(0); | |
1da177e4 LT |
3087 | resp->xbuf->tail[0].iov_base += maxcount&3; |
3088 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 3089 | ADJUST_ARGS(); |
1da177e4 LT |
3090 | } |
3091 | return 0; | |
3092 | } | |
3093 | ||
b37ad28b AV |
3094 | static __be32 |
3095 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
3096 | { |
3097 | int maxcount; | |
3098 | loff_t offset; | |
2ebbc012 | 3099 | __be32 *page, *savep, *tailbase; |
bc749ca4 | 3100 | __be32 *p; |
1da177e4 LT |
3101 | |
3102 | if (nfserr) | |
3103 | return nfserr; | |
3104 | if (resp->xbuf->page_len) | |
3105 | return nfserr_resource; | |
afc59400 | 3106 | if (!*resp->rqstp->rq_next_page) |
d5f50b0c | 3107 | return nfserr_resource; |
1da177e4 | 3108 | |
ab4684d1 | 3109 | RESERVE_SPACE(NFS4_VERIFIER_SIZE); |
1da177e4 LT |
3110 | savep = p; |
3111 | ||
3112 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
3113 | WRITE32(0); | |
3114 | WRITE32(0); | |
3115 | ADJUST_ARGS(); | |
3116 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; | |
bb6e8a9f | 3117 | tailbase = p; |
1da177e4 LT |
3118 | |
3119 | maxcount = PAGE_SIZE; | |
3120 | if (maxcount > readdir->rd_maxcount) | |
3121 | maxcount = readdir->rd_maxcount; | |
3122 | ||
3123 | /* | |
3124 | * Convert from bytes to words, account for the two words already | |
3125 | * written, make sure to leave two words at the end for the next | |
3126 | * pointer and eof field. | |
3127 | */ | |
3128 | maxcount = (maxcount >> 2) - 4; | |
3129 | if (maxcount < 0) { | |
3130 | nfserr = nfserr_toosmall; | |
3131 | goto err_no_verf; | |
3132 | } | |
3133 | ||
afc59400 | 3134 | page = page_address(*(resp->rqstp->rq_next_page++)); |
1da177e4 LT |
3135 | readdir->common.err = 0; |
3136 | readdir->buflen = maxcount; | |
3137 | readdir->buffer = page; | |
3138 | readdir->offset = NULL; | |
3139 | ||
3140 | offset = readdir->rd_cookie; | |
3141 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
3142 | &offset, | |
3143 | &readdir->common, nfsd4_encode_dirent); | |
3144 | if (nfserr == nfs_ok && | |
3145 | readdir->common.err == nfserr_toosmall && | |
3146 | readdir->buffer == page) | |
3147 | nfserr = nfserr_toosmall; | |
1da177e4 LT |
3148 | if (nfserr) |
3149 | goto err_no_verf; | |
3150 | ||
3151 | if (readdir->offset) | |
3152 | xdr_encode_hyper(readdir->offset, offset); | |
3153 | ||
3154 | p = readdir->buffer; | |
3155 | *p++ = 0; /* no more entries */ | |
3156 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
afc59400 BF |
3157 | resp->xbuf->page_len = ((char*)p) - |
3158 | (char*)page_address(*(resp->rqstp->rq_next_page-1)); | |
1da177e4 | 3159 | |
bb6e8a9f | 3160 | /* Use rest of head for padding and remaining ops: */ |
bb6e8a9f | 3161 | resp->xbuf->tail[0].iov_base = tailbase; |
1da177e4 LT |
3162 | resp->xbuf->tail[0].iov_len = 0; |
3163 | resp->p = resp->xbuf->tail[0].iov_base; | |
bb6e8a9f | 3164 | resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; |
1da177e4 LT |
3165 | |
3166 | return 0; | |
3167 | err_no_verf: | |
3168 | p = savep; | |
3169 | ADJUST_ARGS(); | |
3170 | return nfserr; | |
3171 | } | |
3172 | ||
695e12f8 | 3173 | static __be32 |
b37ad28b | 3174 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 3175 | { |
bc749ca4 | 3176 | __be32 *p; |
1da177e4 LT |
3177 | |
3178 | if (!nfserr) { | |
3179 | RESERVE_SPACE(20); | |
c654b8a9 | 3180 | write_cinfo(&p, &remove->rm_cinfo); |
1da177e4 LT |
3181 | ADJUST_ARGS(); |
3182 | } | |
695e12f8 | 3183 | return nfserr; |
1da177e4 LT |
3184 | } |
3185 | ||
695e12f8 | 3186 | static __be32 |
b37ad28b | 3187 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 3188 | { |
bc749ca4 | 3189 | __be32 *p; |
1da177e4 LT |
3190 | |
3191 | if (!nfserr) { | |
3192 | RESERVE_SPACE(40); | |
c654b8a9 BF |
3193 | write_cinfo(&p, &rename->rn_sinfo); |
3194 | write_cinfo(&p, &rename->rn_tinfo); | |
1da177e4 LT |
3195 | ADJUST_ARGS(); |
3196 | } | |
695e12f8 | 3197 | return nfserr; |
1da177e4 LT |
3198 | } |
3199 | ||
695e12f8 | 3200 | static __be32 |
22b6dee8 | 3201 | nfsd4_do_encode_secinfo(struct nfsd4_compoundres *resp, |
a77c806f | 3202 | __be32 nfserr, struct svc_export *exp) |
dcb488a3 | 3203 | { |
676e4ebd | 3204 | u32 i, nflavs, supported; |
4796f457 BF |
3205 | struct exp_flavor_info *flavs; |
3206 | struct exp_flavor_info def_flavs[2]; | |
676e4ebd CL |
3207 | __be32 *p, *flavorsp; |
3208 | static bool report = true; | |
dcb488a3 AA |
3209 | |
3210 | if (nfserr) | |
3211 | goto out; | |
4796f457 BF |
3212 | if (exp->ex_nflavors) { |
3213 | flavs = exp->ex_flavors; | |
3214 | nflavs = exp->ex_nflavors; | |
3215 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
3216 | flavs = def_flavs; | |
3217 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
3218 | nflavs = 2; | |
3219 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
3220 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
3221 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
3222 | nflavs = 1; | |
3223 | flavs[0].pseudoflavor | |
3224 | = svcauth_gss_flavor(exp->ex_client); | |
3225 | } else { | |
3226 | nflavs = 1; | |
3227 | flavs[0].pseudoflavor | |
3228 | = exp->ex_client->flavour->flavour; | |
3229 | } | |
3230 | } | |
3231 | ||
676e4ebd | 3232 | supported = 0; |
dcb488a3 | 3233 | RESERVE_SPACE(4); |
676e4ebd | 3234 | flavorsp = p++; /* to be backfilled later */ |
dcb488a3 | 3235 | ADJUST_ARGS(); |
676e4ebd | 3236 | |
4796f457 | 3237 | for (i = 0; i < nflavs; i++) { |
676e4ebd | 3238 | rpc_authflavor_t pf = flavs[i].pseudoflavor; |
a77c806f | 3239 | struct rpcsec_gss_info info; |
dcb488a3 | 3240 | |
676e4ebd CL |
3241 | if (rpcauth_get_gssinfo(pf, &info) == 0) { |
3242 | supported++; | |
a9f7b4a0 | 3243 | RESERVE_SPACE(4 + 4 + XDR_LEN(info.oid.len) + 4 + 4); |
dcb488a3 | 3244 | WRITE32(RPC_AUTH_GSS); |
a77c806f CL |
3245 | WRITE32(info.oid.len); |
3246 | WRITEMEM(info.oid.data, info.oid.len); | |
a77c806f | 3247 | WRITE32(info.qop); |
a77c806f | 3248 | WRITE32(info.service); |
dcb488a3 | 3249 | ADJUST_ARGS(); |
676e4ebd CL |
3250 | } else if (pf < RPC_AUTH_MAXFLAVOR) { |
3251 | supported++; | |
dcb488a3 | 3252 | RESERVE_SPACE(4); |
676e4ebd | 3253 | WRITE32(pf); |
dcb488a3 | 3254 | ADJUST_ARGS(); |
676e4ebd CL |
3255 | } else { |
3256 | if (report) | |
3257 | pr_warn("NFS: SECINFO: security flavor %u " | |
3258 | "is not supported\n", pf); | |
dcb488a3 AA |
3259 | } |
3260 | } | |
a77c806f | 3261 | |
676e4ebd CL |
3262 | if (nflavs != supported) |
3263 | report = false; | |
3264 | *flavorsp = htonl(supported); | |
3265 | ||
dcb488a3 AA |
3266 | out: |
3267 | if (exp) | |
3268 | exp_put(exp); | |
695e12f8 | 3269 | return nfserr; |
dcb488a3 AA |
3270 | } |
3271 | ||
22b6dee8 MJ |
3272 | static __be32 |
3273 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3274 | struct nfsd4_secinfo *secinfo) | |
3275 | { | |
3276 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->si_exp); | |
3277 | } | |
3278 | ||
3279 | static __be32 | |
3280 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3281 | struct nfsd4_secinfo_no_name *secinfo) | |
3282 | { | |
3283 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->sin_exp); | |
3284 | } | |
3285 | ||
1da177e4 LT |
3286 | /* |
3287 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
3288 | * regardless of the error status. | |
3289 | */ | |
695e12f8 | 3290 | static __be32 |
b37ad28b | 3291 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 3292 | { |
bc749ca4 | 3293 | __be32 *p; |
1da177e4 | 3294 | |
18032ca0 | 3295 | RESERVE_SPACE(16); |
1da177e4 | 3296 | if (nfserr) { |
18032ca0 DQ |
3297 | WRITE32(3); |
3298 | WRITE32(0); | |
1da177e4 LT |
3299 | WRITE32(0); |
3300 | WRITE32(0); | |
3301 | } | |
3302 | else { | |
18032ca0 | 3303 | WRITE32(3); |
1da177e4 LT |
3304 | WRITE32(setattr->sa_bmval[0]); |
3305 | WRITE32(setattr->sa_bmval[1]); | |
18032ca0 | 3306 | WRITE32(setattr->sa_bmval[2]); |
1da177e4 LT |
3307 | } |
3308 | ADJUST_ARGS(); | |
695e12f8 | 3309 | return nfserr; |
1da177e4 LT |
3310 | } |
3311 | ||
695e12f8 | 3312 | static __be32 |
b37ad28b | 3313 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 3314 | { |
bc749ca4 | 3315 | __be32 *p; |
1da177e4 LT |
3316 | |
3317 | if (!nfserr) { | |
ab4684d1 | 3318 | RESERVE_SPACE(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 3319 | WRITEMEM(&scd->se_clientid, 8); |
ab4684d1 | 3320 | WRITEMEM(&scd->se_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
3321 | ADJUST_ARGS(); |
3322 | } | |
3323 | else if (nfserr == nfserr_clid_inuse) { | |
3324 | RESERVE_SPACE(8); | |
3325 | WRITE32(0); | |
3326 | WRITE32(0); | |
3327 | ADJUST_ARGS(); | |
3328 | } | |
695e12f8 | 3329 | return nfserr; |
1da177e4 LT |
3330 | } |
3331 | ||
695e12f8 | 3332 | static __be32 |
b37ad28b | 3333 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 3334 | { |
bc749ca4 | 3335 | __be32 *p; |
1da177e4 LT |
3336 | |
3337 | if (!nfserr) { | |
3338 | RESERVE_SPACE(16); | |
3339 | WRITE32(write->wr_bytes_written); | |
3340 | WRITE32(write->wr_how_written); | |
ab4684d1 | 3341 | WRITEMEM(write->wr_verifier.data, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
3342 | ADJUST_ARGS(); |
3343 | } | |
695e12f8 | 3344 | return nfserr; |
1da177e4 LT |
3345 | } |
3346 | ||
57266a6e BF |
3347 | static const u32 nfs4_minimal_spo_must_enforce[2] = { |
3348 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
3349 | 1 << (OP_EXCHANGE_ID - 32) | | |
3350 | 1 << (OP_CREATE_SESSION - 32) | | |
3351 | 1 << (OP_DESTROY_SESSION - 32) | | |
3352 | 1 << (OP_DESTROY_CLIENTID - 32) | |
3353 | }; | |
3354 | ||
2db134eb | 3355 | static __be32 |
57b7b43b | 3356 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3357 | struct nfsd4_exchange_id *exid) |
3358 | { | |
bc749ca4 | 3359 | __be32 *p; |
0733d213 AA |
3360 | char *major_id; |
3361 | char *server_scope; | |
3362 | int major_id_sz; | |
3363 | int server_scope_sz; | |
3364 | uint64_t minor_id = 0; | |
3365 | ||
3366 | if (nfserr) | |
3367 | return nfserr; | |
3368 | ||
3369 | major_id = utsname()->nodename; | |
3370 | major_id_sz = strlen(major_id); | |
3371 | server_scope = utsname()->nodename; | |
3372 | server_scope_sz = strlen(server_scope); | |
3373 | ||
3374 | RESERVE_SPACE( | |
3375 | 8 /* eir_clientid */ + | |
3376 | 4 /* eir_sequenceid */ + | |
3377 | 4 /* eir_flags */ + | |
a8bb84bc | 3378 | 4 /* spr_how */); |
0733d213 AA |
3379 | |
3380 | WRITEMEM(&exid->clientid, 8); | |
3381 | WRITE32(exid->seqid); | |
3382 | WRITE32(exid->flags); | |
3383 | ||
0733d213 | 3384 | WRITE32(exid->spa_how); |
a8bb84bc KM |
3385 | ADJUST_ARGS(); |
3386 | ||
57266a6e BF |
3387 | switch (exid->spa_how) { |
3388 | case SP4_NONE: | |
3389 | break; | |
3390 | case SP4_MACH_CRED: | |
a8bb84bc KM |
3391 | /* spo_must_enforce, spo_must_allow */ |
3392 | RESERVE_SPACE(16); | |
3393 | ||
57266a6e BF |
3394 | /* spo_must_enforce bitmap: */ |
3395 | WRITE32(2); | |
3396 | WRITE32(nfs4_minimal_spo_must_enforce[0]); | |
3397 | WRITE32(nfs4_minimal_spo_must_enforce[1]); | |
3398 | /* empty spo_must_allow bitmap: */ | |
3399 | WRITE32(0); | |
a8bb84bc KM |
3400 | |
3401 | ADJUST_ARGS(); | |
57266a6e BF |
3402 | break; |
3403 | default: | |
3404 | WARN_ON_ONCE(1); | |
3405 | } | |
0733d213 | 3406 | |
a8bb84bc KM |
3407 | RESERVE_SPACE( |
3408 | 8 /* so_minor_id */ + | |
3409 | 4 /* so_major_id.len */ + | |
3410 | (XDR_QUADLEN(major_id_sz) * 4) + | |
3411 | 4 /* eir_server_scope.len */ + | |
3412 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
3413 | 4 /* eir_server_impl_id.count (0) */); | |
3414 | ||
0733d213 AA |
3415 | /* The server_owner struct */ |
3416 | WRITE64(minor_id); /* Minor id */ | |
3417 | /* major id */ | |
3418 | WRITE32(major_id_sz); | |
3419 | WRITEMEM(major_id, major_id_sz); | |
3420 | ||
3421 | /* Server scope */ | |
3422 | WRITE32(server_scope_sz); | |
3423 | WRITEMEM(server_scope, server_scope_sz); | |
3424 | ||
3425 | /* Implementation id */ | |
3426 | WRITE32(0); /* zero length nfs_impl_id4 array */ | |
3427 | ADJUST_ARGS(); | |
3428 | return 0; | |
2db134eb AA |
3429 | } |
3430 | ||
3431 | static __be32 | |
57b7b43b | 3432 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3433 | struct nfsd4_create_session *sess) |
3434 | { | |
bc749ca4 | 3435 | __be32 *p; |
ec6b5d7b AA |
3436 | |
3437 | if (nfserr) | |
3438 | return nfserr; | |
3439 | ||
3440 | RESERVE_SPACE(24); | |
3441 | WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3442 | WRITE32(sess->seqid); | |
3443 | WRITE32(sess->flags); | |
3444 | ADJUST_ARGS(); | |
3445 | ||
3446 | RESERVE_SPACE(28); | |
3447 | WRITE32(0); /* headerpadsz */ | |
3448 | WRITE32(sess->fore_channel.maxreq_sz); | |
3449 | WRITE32(sess->fore_channel.maxresp_sz); | |
3450 | WRITE32(sess->fore_channel.maxresp_cached); | |
3451 | WRITE32(sess->fore_channel.maxops); | |
3452 | WRITE32(sess->fore_channel.maxreqs); | |
3453 | WRITE32(sess->fore_channel.nr_rdma_attrs); | |
3454 | ADJUST_ARGS(); | |
3455 | ||
3456 | if (sess->fore_channel.nr_rdma_attrs) { | |
3457 | RESERVE_SPACE(4); | |
3458 | WRITE32(sess->fore_channel.rdma_attrs); | |
3459 | ADJUST_ARGS(); | |
3460 | } | |
3461 | ||
3462 | RESERVE_SPACE(28); | |
3463 | WRITE32(0); /* headerpadsz */ | |
3464 | WRITE32(sess->back_channel.maxreq_sz); | |
3465 | WRITE32(sess->back_channel.maxresp_sz); | |
3466 | WRITE32(sess->back_channel.maxresp_cached); | |
3467 | WRITE32(sess->back_channel.maxops); | |
3468 | WRITE32(sess->back_channel.maxreqs); | |
3469 | WRITE32(sess->back_channel.nr_rdma_attrs); | |
3470 | ADJUST_ARGS(); | |
3471 | ||
3472 | if (sess->back_channel.nr_rdma_attrs) { | |
3473 | RESERVE_SPACE(4); | |
3474 | WRITE32(sess->back_channel.rdma_attrs); | |
3475 | ADJUST_ARGS(); | |
3476 | } | |
3477 | return 0; | |
2db134eb AA |
3478 | } |
3479 | ||
c47d832b | 3480 | static __be32 |
57b7b43b | 3481 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3482 | struct nfsd4_sequence *seq) |
3483 | { | |
bc749ca4 | 3484 | __be32 *p; |
b85d4c01 BH |
3485 | |
3486 | if (nfserr) | |
3487 | return nfserr; | |
3488 | ||
3489 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20); | |
3490 | WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3491 | WRITE32(seq->seqid); | |
3492 | WRITE32(seq->slotid); | |
b7d7ca35 BF |
3493 | /* Note slotid's are numbered from zero: */ |
3494 | WRITE32(seq->maxslots - 1); /* sr_highest_slotid */ | |
3495 | WRITE32(seq->maxslots - 1); /* sr_target_highest_slotid */ | |
0d7bb719 | 3496 | WRITE32(seq->status_flags); |
b85d4c01 BH |
3497 | |
3498 | ADJUST_ARGS(); | |
557ce264 | 3499 | resp->cstate.datap = p; /* DRC cache data pointer */ |
b85d4c01 | 3500 | return 0; |
2db134eb AA |
3501 | } |
3502 | ||
2355c596 | 3503 | static __be32 |
57b7b43b | 3504 | nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
17456804 BS |
3505 | struct nfsd4_test_stateid *test_stateid) |
3506 | { | |
03cfb420 | 3507 | struct nfsd4_test_stateid_id *stateid, *next; |
17456804 | 3508 | __be32 *p; |
17456804 | 3509 | |
03cfb420 | 3510 | RESERVE_SPACE(4 + (4 * test_stateid->ts_num_ids)); |
17456804 | 3511 | *p++ = htonl(test_stateid->ts_num_ids); |
17456804 | 3512 | |
03cfb420 | 3513 | list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) { |
02f5fde5 | 3514 | *p++ = stateid->ts_id_status; |
17456804 | 3515 | } |
17456804 | 3516 | |
03cfb420 | 3517 | ADJUST_ARGS(); |
17456804 BS |
3518 | return nfserr; |
3519 | } | |
3520 | ||
695e12f8 BH |
3521 | static __be32 |
3522 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
3523 | { | |
3524 | return nfserr; | |
3525 | } | |
3526 | ||
3527 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
3528 | ||
2db134eb AA |
3529 | /* |
3530 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
3531 | * since we don't need to filter out obsolete ops as this is | |
3532 | * done in the decoding phase. | |
3533 | */ | |
695e12f8 | 3534 | static nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
3535 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
3536 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
3537 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
3538 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
3539 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
3540 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
3541 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
3542 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
3543 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
3544 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
3545 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
3546 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
3547 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
3548 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
3549 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3550 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 3551 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
3552 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
3553 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
3554 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3555 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3556 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3557 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
3558 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
3559 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
3560 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
3561 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
3562 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
3563 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3564 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3565 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
3566 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
3567 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
3568 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
3569 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3570 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
3571 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3572 | |
3573 | /* NFSv4.1 operations */ | |
3574 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
1d1bc8f2 | 3575 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
2db134eb AA |
3576 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
3577 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
43212cc7 KM |
3578 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_noop, |
3579 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3580 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3581 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, | |
3582 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
3583 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
3584 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
3585 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
22b6dee8 | 3586 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
2db134eb AA |
3587 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
3588 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
17456804 | 3589 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, |
2db134eb AA |
3590 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3591 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
3592 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
695e12f8 BH |
3593 | }; |
3594 | ||
496c262c AA |
3595 | /* |
3596 | * Calculate the total amount of memory that the compound response has taken | |
58e7b33a | 3597 | * after encoding the current operation with pad. |
496c262c | 3598 | * |
58e7b33a MJ |
3599 | * pad: if operation is non-idempotent, pad was calculate by op_rsize_bop() |
3600 | * which was specified at nfsd4_operation, else pad is zero. | |
496c262c | 3601 | * |
58e7b33a | 3602 | * Compare this length to the session se_fmaxresp_sz and se_fmaxresp_cached. |
496c262c AA |
3603 | * |
3604 | * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so | |
3605 | * will be at least a page and will therefore hold the xdr_buf head. | |
3606 | */ | |
57b7b43b | 3607 | __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad) |
496c262c | 3608 | { |
496c262c | 3609 | struct xdr_buf *xb = &resp->rqstp->rq_res; |
496c262c AA |
3610 | struct nfsd4_session *session = NULL; |
3611 | struct nfsd4_slot *slot = resp->cstate.slot; | |
58e7b33a | 3612 | u32 length, tlen = 0; |
496c262c AA |
3613 | |
3614 | if (!nfsd4_has_session(&resp->cstate)) | |
58e7b33a | 3615 | return 0; |
496c262c AA |
3616 | |
3617 | session = resp->cstate.session; | |
58e7b33a MJ |
3618 | if (session == NULL) |
3619 | return 0; | |
496c262c AA |
3620 | |
3621 | if (xb->page_len == 0) { | |
3622 | length = (char *)resp->p - (char *)xb->head[0].iov_base + pad; | |
3623 | } else { | |
3624 | if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0) | |
3625 | tlen = (char *)resp->p - (char *)xb->tail[0].iov_base; | |
3626 | ||
3627 | length = xb->head[0].iov_len + xb->page_len + tlen + pad; | |
3628 | } | |
3629 | dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__, | |
3630 | length, xb->page_len, tlen, pad); | |
3631 | ||
58e7b33a MJ |
3632 | if (length > session->se_fchannel.maxresp_sz) |
3633 | return nfserr_rep_too_big; | |
3634 | ||
73e79482 | 3635 | if ((slot->sl_flags & NFSD4_SLOT_CACHETHIS) && |
58e7b33a | 3636 | length > session->se_fchannel.maxresp_cached) |
496c262c | 3637 | return nfserr_rep_too_big_to_cache; |
58e7b33a MJ |
3638 | |
3639 | return 0; | |
496c262c AA |
3640 | } |
3641 | ||
1da177e4 LT |
3642 | void |
3643 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3644 | { | |
9411b1d4 | 3645 | struct nfs4_stateowner *so = resp->cstate.replay_owner; |
2ebbc012 | 3646 | __be32 *statp; |
bc749ca4 | 3647 | __be32 *p; |
1da177e4 LT |
3648 | |
3649 | RESERVE_SPACE(8); | |
3650 | WRITE32(op->opnum); | |
3651 | statp = p++; /* to be backfilled at the end */ | |
3652 | ADJUST_ARGS(); | |
3653 | ||
695e12f8 BH |
3654 | if (op->opnum == OP_ILLEGAL) |
3655 | goto status; | |
3656 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || | |
3657 | !nfsd4_enc_ops[op->opnum]); | |
3658 | op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u); | |
496c262c | 3659 | /* nfsd4_check_drc_limit guarantees enough room for error status */ |
58e7b33a MJ |
3660 | if (!op->status) |
3661 | op->status = nfsd4_check_resp_size(resp, 0); | |
9411b1d4 BF |
3662 | if (so) { |
3663 | so->so_replay.rp_status = op->status; | |
3664 | so->so_replay.rp_buflen = (char *)resp->p - (char *)(statp+1); | |
3665 | memcpy(so->so_replay.rp_buf, statp+1, so->so_replay.rp_buflen); | |
3666 | } | |
695e12f8 | 3667 | status: |
1da177e4 LT |
3668 | /* |
3669 | * Note: We write the status directly, instead of using WRITE32(), | |
3670 | * since it is already in network byte order. | |
3671 | */ | |
3672 | *statp = op->status; | |
3673 | } | |
3674 | ||
3675 | /* | |
3676 | * Encode the reply stored in the stateowner reply cache | |
3677 | * | |
3678 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
3679 | * previously sent already encoded operation. | |
3680 | * | |
3681 | * called with nfs4_lock_state() held | |
3682 | */ | |
3683 | void | |
3684 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3685 | { | |
bc749ca4 | 3686 | __be32 *p; |
1da177e4 LT |
3687 | struct nfs4_replay *rp = op->replay; |
3688 | ||
3689 | BUG_ON(!rp); | |
3690 | ||
3691 | RESERVE_SPACE(8); | |
3692 | WRITE32(op->opnum); | |
3693 | *p++ = rp->rp_status; /* already xdr'ed */ | |
3694 | ADJUST_ARGS(); | |
3695 | ||
3696 | RESERVE_SPACE(rp->rp_buflen); | |
3697 | WRITEMEM(rp->rp_buf, rp->rp_buflen); | |
3698 | ADJUST_ARGS(); | |
3699 | } | |
3700 | ||
1da177e4 | 3701 | int |
2ebbc012 | 3702 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
3703 | { |
3704 | return xdr_ressize_check(rqstp, p); | |
3705 | } | |
3706 | ||
3e98abff | 3707 | int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp) |
1da177e4 | 3708 | { |
3e98abff BF |
3709 | struct svc_rqst *rqstp = rq; |
3710 | struct nfsd4_compoundargs *args = rqstp->rq_argp; | |
3711 | ||
1da177e4 LT |
3712 | if (args->ops != args->iops) { |
3713 | kfree(args->ops); | |
3714 | args->ops = args->iops; | |
3715 | } | |
f99d49ad JJ |
3716 | kfree(args->tmpp); |
3717 | args->tmpp = NULL; | |
1da177e4 LT |
3718 | while (args->to_free) { |
3719 | struct tmpbuf *tb = args->to_free; | |
3720 | args->to_free = tb->next; | |
3721 | tb->release(tb->buf); | |
3722 | kfree(tb); | |
3723 | } | |
3e98abff | 3724 | return 1; |
1da177e4 LT |
3725 | } |
3726 | ||
3727 | int | |
2ebbc012 | 3728 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 3729 | { |
1da177e4 LT |
3730 | args->p = p; |
3731 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
3732 | args->pagelist = rqstp->rq_arg.pages; | |
3733 | args->pagelen = rqstp->rq_arg.page_len; | |
3734 | args->tmpp = NULL; | |
3735 | args->to_free = NULL; | |
3736 | args->ops = args->iops; | |
3737 | args->rqstp = rqstp; | |
3738 | ||
3e98abff | 3739 | return !nfsd4_decode_compound(args); |
1da177e4 LT |
3740 | } |
3741 | ||
3742 | int | |
2ebbc012 | 3743 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
3744 | { |
3745 | /* | |
3746 | * All that remains is to write the tag and operation count... | |
3747 | */ | |
557ce264 | 3748 | struct nfsd4_compound_state *cs = &resp->cstate; |
1da177e4 LT |
3749 | struct kvec *iov; |
3750 | p = resp->tagp; | |
3751 | *p++ = htonl(resp->taglen); | |
3752 | memcpy(p, resp->tag, resp->taglen); | |
3753 | p += XDR_QUADLEN(resp->taglen); | |
3754 | *p++ = htonl(resp->opcnt); | |
3755 | ||
3756 | if (rqstp->rq_res.page_len) | |
3757 | iov = &rqstp->rq_res.tail[0]; | |
3758 | else | |
3759 | iov = &rqstp->rq_res.head[0]; | |
3760 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; | |
3761 | BUG_ON(iov->iov_len > PAGE_SIZE); | |
26c0c75e | 3762 | if (nfsd4_has_session(cs)) { |
f0f51f5c BF |
3763 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
3764 | struct nfs4_client *clp = cs->session->se_client; | |
26c0c75e BF |
3765 | if (cs->status != nfserr_replay_cache) { |
3766 | nfsd4_store_cache_entry(resp); | |
73e79482 | 3767 | cs->slot->sl_flags &= ~NFSD4_SLOT_INUSE; |
26c0c75e | 3768 | } |
d7682988 | 3769 | /* Renew the clientid on success and on replay */ |
f0f51f5c | 3770 | spin_lock(&nn->client_lock); |
221a6876 | 3771 | nfsd4_put_session(cs->session); |
f0f51f5c BF |
3772 | spin_unlock(&nn->client_lock); |
3773 | put_client_renew(clp); | |
da3846a2 | 3774 | } |
1da177e4 LT |
3775 | return 1; |
3776 | } | |
3777 | ||
3778 | /* | |
3779 | * Local variables: | |
3780 | * c-basic-offset: 8 | |
3781 | * End: | |
3782 | */ |