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 | 296 | if (nace > NFS4_ACL_MAX) |
798df338 | 297 | return nfserr_fbig; |
28e05dd8 BF |
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; | |
70cc7f75 | 1225 | write->wr_pagelist = argp->pagelist; |
5a80a54d BF |
1226 | |
1227 | len = XDR_QUADLEN(write->wr_buflen) << 2; | |
1228 | if (len >= avail) { | |
1229 | int pages; | |
1230 | ||
1231 | len -= avail; | |
1232 | ||
1233 | pages = len >> PAGE_SHIFT; | |
1234 | argp->pagelist += pages; | |
1235 | argp->pagelen -= pages * PAGE_SIZE; | |
1236 | len -= pages * PAGE_SIZE; | |
1237 | ||
1238 | argp->p = (__be32 *)page_address(argp->pagelist[0]); | |
365da4ad | 1239 | argp->pagelist++; |
5a80a54d | 1240 | argp->end = argp->p + XDR_QUADLEN(PAGE_SIZE); |
1da177e4 | 1241 | } |
5a80a54d | 1242 | argp->p += XDR_QUADLEN(len); |
1da177e4 LT |
1243 | |
1244 | DECODE_TAIL; | |
1245 | } | |
1246 | ||
b37ad28b | 1247 | static __be32 |
1da177e4 LT |
1248 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
1249 | { | |
1250 | DECODE_HEAD; | |
1251 | ||
e1a90ebd AS |
1252 | if (argp->minorversion >= 1) |
1253 | return nfserr_notsupp; | |
1254 | ||
1da177e4 LT |
1255 | READ_BUF(12); |
1256 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
1257 | READ32(rlockowner->rl_owner.len); | |
1258 | READ_BUF(rlockowner->rl_owner.len); | |
1259 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
1260 | ||
60adfc50 AA |
1261 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1262 | return nfserr_inval; | |
1da177e4 LT |
1263 | DECODE_TAIL; |
1264 | } | |
1265 | ||
2db134eb AA |
1266 | static __be32 |
1267 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1268 | struct nfsd4_exchange_id *exid) |
2db134eb | 1269 | { |
5afa040b | 1270 | int dummy, tmp; |
0733d213 AA |
1271 | DECODE_HEAD; |
1272 | ||
1273 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1274 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1275 | ||
a084daf5 BF |
1276 | status = nfsd4_decode_opaque(argp, &exid->clname); |
1277 | if (status) | |
1278 | return nfserr_bad_xdr; | |
0733d213 AA |
1279 | |
1280 | READ_BUF(4); | |
1281 | READ32(exid->flags); | |
1282 | ||
1283 | /* Ignore state_protect4_a */ | |
1284 | READ_BUF(4); | |
1285 | READ32(exid->spa_how); | |
1286 | switch (exid->spa_how) { | |
1287 | case SP4_NONE: | |
1288 | break; | |
1289 | case SP4_MACH_CRED: | |
1290 | /* spo_must_enforce */ | |
1291 | READ_BUF(4); | |
1292 | READ32(dummy); | |
1293 | READ_BUF(dummy * 4); | |
1294 | p += dummy; | |
1295 | ||
1296 | /* spo_must_allow */ | |
1297 | READ_BUF(4); | |
1298 | READ32(dummy); | |
1299 | READ_BUF(dummy * 4); | |
1300 | p += dummy; | |
1301 | break; | |
1302 | case SP4_SSV: | |
1303 | /* ssp_ops */ | |
1304 | READ_BUF(4); | |
1305 | READ32(dummy); | |
1306 | READ_BUF(dummy * 4); | |
1307 | p += dummy; | |
1308 | ||
1309 | READ_BUF(4); | |
1310 | READ32(dummy); | |
1311 | READ_BUF(dummy * 4); | |
1312 | p += dummy; | |
1313 | ||
1314 | /* ssp_hash_algs<> */ | |
1315 | READ_BUF(4); | |
5afa040b MJ |
1316 | READ32(tmp); |
1317 | while (tmp--) { | |
1318 | READ_BUF(4); | |
1319 | READ32(dummy); | |
1320 | READ_BUF(dummy); | |
1321 | p += XDR_QUADLEN(dummy); | |
1322 | } | |
0733d213 AA |
1323 | |
1324 | /* ssp_encr_algs<> */ | |
1325 | READ_BUF(4); | |
5afa040b MJ |
1326 | READ32(tmp); |
1327 | while (tmp--) { | |
1328 | READ_BUF(4); | |
1329 | READ32(dummy); | |
1330 | READ_BUF(dummy); | |
1331 | p += XDR_QUADLEN(dummy); | |
1332 | } | |
0733d213 AA |
1333 | |
1334 | /* ssp_window and ssp_num_gss_handles */ | |
1335 | READ_BUF(8); | |
1336 | READ32(dummy); | |
1337 | READ32(dummy); | |
1338 | break; | |
1339 | default: | |
1340 | goto xdr_error; | |
1341 | } | |
1342 | ||
1343 | /* Ignore Implementation ID */ | |
1344 | READ_BUF(4); /* nfs_impl_id4 array length */ | |
1345 | READ32(dummy); | |
1346 | ||
1347 | if (dummy > 1) | |
1348 | goto xdr_error; | |
1349 | ||
1350 | if (dummy == 1) { | |
1351 | /* nii_domain */ | |
1352 | READ_BUF(4); | |
1353 | READ32(dummy); | |
1354 | READ_BUF(dummy); | |
1355 | p += XDR_QUADLEN(dummy); | |
1356 | ||
1357 | /* nii_name */ | |
1358 | READ_BUF(4); | |
1359 | READ32(dummy); | |
1360 | READ_BUF(dummy); | |
1361 | p += XDR_QUADLEN(dummy); | |
1362 | ||
1363 | /* nii_date */ | |
1364 | READ_BUF(12); | |
1365 | p += 3; | |
1366 | } | |
1367 | DECODE_TAIL; | |
2db134eb AA |
1368 | } |
1369 | ||
1370 | static __be32 | |
1371 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1372 | struct nfsd4_create_session *sess) | |
1373 | { | |
ec6b5d7b | 1374 | DECODE_HEAD; |
ec6b5d7b | 1375 | u32 dummy; |
ec6b5d7b AA |
1376 | |
1377 | READ_BUF(16); | |
1378 | COPYMEM(&sess->clientid, 8); | |
1379 | READ32(sess->seqid); | |
1380 | READ32(sess->flags); | |
1381 | ||
1382 | /* Fore channel attrs */ | |
1383 | READ_BUF(28); | |
1384 | READ32(dummy); /* headerpadsz is always 0 */ | |
1385 | READ32(sess->fore_channel.maxreq_sz); | |
1386 | READ32(sess->fore_channel.maxresp_sz); | |
1387 | READ32(sess->fore_channel.maxresp_cached); | |
1388 | READ32(sess->fore_channel.maxops); | |
1389 | READ32(sess->fore_channel.maxreqs); | |
1390 | READ32(sess->fore_channel.nr_rdma_attrs); | |
1391 | if (sess->fore_channel.nr_rdma_attrs == 1) { | |
1392 | READ_BUF(4); | |
1393 | READ32(sess->fore_channel.rdma_attrs); | |
1394 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { | |
1395 | dprintk("Too many fore channel attr bitmaps!\n"); | |
1396 | goto xdr_error; | |
1397 | } | |
1398 | ||
1399 | /* Back channel attrs */ | |
1400 | READ_BUF(28); | |
1401 | READ32(dummy); /* headerpadsz is always 0 */ | |
1402 | READ32(sess->back_channel.maxreq_sz); | |
1403 | READ32(sess->back_channel.maxresp_sz); | |
1404 | READ32(sess->back_channel.maxresp_cached); | |
1405 | READ32(sess->back_channel.maxops); | |
1406 | READ32(sess->back_channel.maxreqs); | |
1407 | READ32(sess->back_channel.nr_rdma_attrs); | |
1408 | if (sess->back_channel.nr_rdma_attrs == 1) { | |
1409 | READ_BUF(4); | |
1410 | READ32(sess->back_channel.rdma_attrs); | |
1411 | } else if (sess->back_channel.nr_rdma_attrs > 1) { | |
1412 | dprintk("Too many back channel attr bitmaps!\n"); | |
1413 | goto xdr_error; | |
1414 | } | |
1415 | ||
acb2887e | 1416 | READ_BUF(4); |
ec6b5d7b | 1417 | READ32(sess->callback_prog); |
acb2887e | 1418 | nfsd4_decode_cb_sec(argp, &sess->cb_sec); |
ec6b5d7b | 1419 | DECODE_TAIL; |
2db134eb AA |
1420 | } |
1421 | ||
1422 | static __be32 | |
1423 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, | |
1424 | struct nfsd4_destroy_session *destroy_session) | |
1425 | { | |
e10e0cfc BH |
1426 | DECODE_HEAD; |
1427 | READ_BUF(NFS4_MAX_SESSIONID_LEN); | |
1428 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1429 | ||
1430 | DECODE_TAIL; | |
2db134eb AA |
1431 | } |
1432 | ||
e1ca12df BS |
1433 | static __be32 |
1434 | nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp, | |
1435 | struct nfsd4_free_stateid *free_stateid) | |
1436 | { | |
1437 | DECODE_HEAD; | |
1438 | ||
1439 | READ_BUF(sizeof(stateid_t)); | |
1440 | READ32(free_stateid->fr_stateid.si_generation); | |
1441 | COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
1442 | ||
1443 | DECODE_TAIL; | |
1444 | } | |
1445 | ||
2db134eb AA |
1446 | static __be32 |
1447 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, | |
1448 | struct nfsd4_sequence *seq) | |
1449 | { | |
b85d4c01 BH |
1450 | DECODE_HEAD; |
1451 | ||
1452 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); | |
1453 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1454 | READ32(seq->seqid); | |
1455 | READ32(seq->slotid); | |
1456 | READ32(seq->maxslots); | |
1457 | READ32(seq->cachethis); | |
1458 | ||
1459 | DECODE_TAIL; | |
2db134eb AA |
1460 | } |
1461 | ||
17456804 BS |
1462 | static __be32 |
1463 | nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid) | |
1464 | { | |
17456804 | 1465 | int i; |
03cfb420 BS |
1466 | __be32 *p, status; |
1467 | struct nfsd4_test_stateid_id *stateid; | |
17456804 BS |
1468 | |
1469 | READ_BUF(4); | |
1470 | test_stateid->ts_num_ids = ntohl(*p++); | |
1471 | ||
03cfb420 | 1472 | INIT_LIST_HEAD(&test_stateid->ts_stateid_list); |
17456804 BS |
1473 | |
1474 | for (i = 0; i < test_stateid->ts_num_ids; i++) { | |
03cfb420 BS |
1475 | stateid = kmalloc(sizeof(struct nfsd4_test_stateid_id), GFP_KERNEL); |
1476 | if (!stateid) { | |
afcf6792 | 1477 | status = nfserrno(-ENOMEM); |
03cfb420 BS |
1478 | goto out; |
1479 | } | |
1480 | ||
1481 | defer_free(argp, kfree, stateid); | |
1482 | INIT_LIST_HEAD(&stateid->ts_id_list); | |
1483 | list_add_tail(&stateid->ts_id_list, &test_stateid->ts_stateid_list); | |
1484 | ||
1485 | status = nfsd4_decode_stateid(argp, &stateid->ts_id_stateid); | |
17456804 | 1486 | if (status) |
03cfb420 | 1487 | goto out; |
17456804 BS |
1488 | } |
1489 | ||
1490 | status = 0; | |
1491 | out: | |
1492 | return status; | |
1493 | xdr_error: | |
1494 | dprintk("NFSD: xdr error (%s:%d)\n", __FILE__, __LINE__); | |
1495 | status = nfserr_bad_xdr; | |
1496 | goto out; | |
1497 | } | |
1498 | ||
345c2842 MJ |
1499 | static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_clientid *dc) |
1500 | { | |
1501 | DECODE_HEAD; | |
1502 | ||
1503 | READ_BUF(8); | |
1504 | COPYMEM(&dc->clientid, 8); | |
1505 | ||
1506 | DECODE_TAIL; | |
1507 | } | |
1508 | ||
4dc6ec00 BF |
1509 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) |
1510 | { | |
1511 | DECODE_HEAD; | |
1512 | ||
1513 | READ_BUF(4); | |
1514 | READ32(rc->rca_one_fs); | |
1515 | ||
1516 | DECODE_TAIL; | |
1517 | } | |
1518 | ||
347e0ad9 BH |
1519 | static __be32 |
1520 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1521 | { | |
1522 | return nfs_ok; | |
1523 | } | |
1524 | ||
3c375c6f BH |
1525 | static __be32 |
1526 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1527 | { | |
1e685ec2 | 1528 | return nfserr_notsupp; |
3c375c6f BH |
1529 | } |
1530 | ||
347e0ad9 BH |
1531 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1532 | ||
1533 | static nfsd4_dec nfsd4_dec_ops[] = { | |
ad1060c8 BF |
1534 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1535 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1536 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1537 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1538 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1539 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1540 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1541 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1542 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1543 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1544 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1545 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1546 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1547 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1548 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1549 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1550 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1551 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1552 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1553 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
e1a90ebd | 1554 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_putpubfh, |
ad1060c8 BF |
1555 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1556 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1557 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1558 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1559 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1560 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1561 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1562 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1563 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1564 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1565 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1566 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1567 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1568 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1569 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1570 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
2db134eb AA |
1571 | |
1572 | /* new operations for NFSv4.1 */ | |
cb73a9f4 | 1573 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_backchannel_ctl, |
1d1bc8f2 | 1574 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
9064caae RD |
1575 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
1576 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
1577 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
e1ca12df | 1578 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, |
9064caae RD |
1579 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
1580 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1581 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1582 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1583 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1584 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
04f4ad16 | 1585 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
9064caae RD |
1586 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
1587 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
17456804 | 1588 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid, |
9064caae | 1589 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
345c2842 | 1590 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, |
4dc6ec00 | 1591 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
2db134eb AA |
1592 | }; |
1593 | ||
e1a90ebd AS |
1594 | static inline bool |
1595 | nfsd4_opnum_in_range(struct nfsd4_compoundargs *argp, struct nfsd4_op *op) | |
1596 | { | |
8217d146 | 1597 | if (op->opnum < FIRST_NFS4_OP) |
e1a90ebd | 1598 | return false; |
8217d146 | 1599 | else if (argp->minorversion == 0 && op->opnum > LAST_NFS40_OP) |
e1a90ebd | 1600 | return false; |
8217d146 AS |
1601 | else if (argp->minorversion == 1 && op->opnum > LAST_NFS41_OP) |
1602 | return false; | |
1603 | else if (argp->minorversion == 2 && op->opnum > LAST_NFS42_OP) | |
e1a90ebd AS |
1604 | return false; |
1605 | return true; | |
1606 | } | |
f2feb96b | 1607 | |
6ff40dec BF |
1608 | /* |
1609 | * Return a rough estimate of the maximum possible reply size. Note the | |
1610 | * estimate includes rpc headers so is meant to be passed to | |
1611 | * svc_reserve, not svc_reserve_auth. | |
1612 | * | |
1613 | * Also note the current compound encoding permits only one operation to | |
1614 | * use pages beyond the first one, so the maximum possible length is the | |
1615 | * maximum over these values, not the sum. | |
1616 | */ | |
1617 | static int nfsd4_max_reply(u32 opnum) | |
1618 | { | |
1619 | switch (opnum) { | |
1620 | case OP_READLINK: | |
1621 | case OP_READDIR: | |
1622 | /* | |
1623 | * Both of these ops take a single page for data and put | |
1624 | * the head and tail in another page: | |
1625 | */ | |
1626 | return 2 * PAGE_SIZE; | |
1627 | case OP_READ: | |
1628 | return INT_MAX; | |
1629 | default: | |
1630 | return PAGE_SIZE; | |
1631 | } | |
1632 | } | |
1633 | ||
b37ad28b | 1634 | static __be32 |
1da177e4 LT |
1635 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1636 | { | |
1637 | DECODE_HEAD; | |
1638 | struct nfsd4_op *op; | |
1091006c | 1639 | bool cachethis = false; |
6ff40dec | 1640 | int max_reply = PAGE_SIZE; |
1da177e4 LT |
1641 | int i; |
1642 | ||
1da177e4 LT |
1643 | READ_BUF(4); |
1644 | READ32(argp->taglen); | |
1645 | READ_BUF(argp->taglen + 8); | |
1646 | SAVEMEM(argp->tag, argp->taglen); | |
1647 | READ32(argp->minorversion); | |
1648 | READ32(argp->opcnt); | |
1649 | ||
1650 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1651 | goto xdr_error; | |
1652 | if (argp->opcnt > 100) | |
1653 | goto xdr_error; | |
1654 | ||
e8c96f8c | 1655 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
1da177e4 LT |
1656 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1657 | if (!argp->ops) { | |
1658 | argp->ops = argp->iops; | |
817cb9d4 | 1659 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1660 | goto xdr_error; |
1661 | } | |
1662 | } | |
1663 | ||
e1a90ebd | 1664 | if (argp->minorversion > NFSD_SUPPORTED_MINOR_VERSION) |
30cff1ff BH |
1665 | argp->opcnt = 0; |
1666 | ||
1da177e4 LT |
1667 | for (i = 0; i < argp->opcnt; i++) { |
1668 | op = &argp->ops[i]; | |
1669 | op->replay = NULL; | |
1670 | ||
8a61b18c BF |
1671 | READ_BUF(4); |
1672 | READ32(op->opnum); | |
1da177e4 | 1673 | |
e1a90ebd AS |
1674 | if (nfsd4_opnum_in_range(argp, op)) |
1675 | op->status = nfsd4_dec_ops[op->opnum](argp, &op->u); | |
347e0ad9 | 1676 | else { |
1da177e4 LT |
1677 | op->opnum = OP_ILLEGAL; |
1678 | op->status = nfserr_op_illegal; | |
1da177e4 | 1679 | } |
1091006c BF |
1680 | /* |
1681 | * We'll try to cache the result in the DRC if any one | |
1682 | * op in the compound wants to be cached: | |
1683 | */ | |
1684 | cachethis |= nfsd4_cache_this_op(op); | |
6ff40dec BF |
1685 | |
1686 | max_reply = max(max_reply, nfsd4_max_reply(op->opnum)); | |
e372ba60 BF |
1687 | |
1688 | if (op->status) { | |
1689 | argp->opcnt = i+1; | |
1690 | break; | |
1691 | } | |
1da177e4 | 1692 | } |
1091006c BF |
1693 | /* Sessions make the DRC unnecessary: */ |
1694 | if (argp->minorversion) | |
1695 | cachethis = false; | |
6ff40dec BF |
1696 | if (max_reply != INT_MAX) |
1697 | svc_reserve(argp->rqstp, max_reply); | |
1091006c | 1698 | argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; |
1da177e4 LT |
1699 | |
1700 | DECODE_TAIL; | |
1701 | } | |
1da177e4 | 1702 | |
1da177e4 LT |
1703 | #define WRITE32(n) *p++ = htonl(n) |
1704 | #define WRITE64(n) do { \ | |
1705 | *p++ = htonl((u32)((n) >> 32)); \ | |
1706 | *p++ = htonl((u32)(n)); \ | |
1707 | } while (0) | |
5108b276 | 1708 | #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \ |
1da177e4 LT |
1709 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ |
1710 | memcpy(p, ptr, nbytes); \ | |
1711 | p += XDR_QUADLEN(nbytes); \ | |
5108b276 | 1712 | }} while (0) |
c654b8a9 BF |
1713 | |
1714 | static void write32(__be32 **p, u32 n) | |
1715 | { | |
45eaa1c1 | 1716 | *(*p)++ = htonl(n); |
c654b8a9 BF |
1717 | } |
1718 | ||
1719 | static void write64(__be32 **p, u64 n) | |
1720 | { | |
45eaa1c1 | 1721 | write32(p, (n >> 32)); |
c654b8a9 BF |
1722 | write32(p, (u32)n); |
1723 | } | |
1724 | ||
1725 | static void write_change(__be32 **p, struct kstat *stat, struct inode *inode) | |
1726 | { | |
1727 | if (IS_I_VERSION(inode)) { | |
1728 | write64(p, inode->i_version); | |
1729 | } else { | |
1730 | write32(p, stat->ctime.tv_sec); | |
1731 | write32(p, stat->ctime.tv_nsec); | |
1732 | } | |
1733 | } | |
1734 | ||
1735 | static void write_cinfo(__be32 **p, struct nfsd4_change_info *c) | |
1736 | { | |
1737 | write32(p, c->atomic); | |
1738 | if (c->change_supported) { | |
1739 | write64(p, c->before_change); | |
1740 | write64(p, c->after_change); | |
1741 | } else { | |
1742 | write32(p, c->before_ctime_sec); | |
1743 | write32(p, c->before_ctime_nsec); | |
1744 | write32(p, c->after_ctime_sec); | |
1745 | write32(p, c->after_ctime_nsec); | |
1746 | } | |
1747 | } | |
1da177e4 LT |
1748 | |
1749 | #define RESERVE_SPACE(nbytes) do { \ | |
1750 | p = resp->p; \ | |
1751 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ | |
1752 | } while (0) | |
1753 | #define ADJUST_ARGS() resp->p = p | |
1754 | ||
81c3f413 | 1755 | /* Encode as an array of strings the string given with components |
e7a0444a | 1756 | * separated @sep, escaped with esc_enter and esc_exit. |
81c3f413 | 1757 | */ |
e7a0444a WAA |
1758 | static __be32 nfsd4_encode_components_esc(char sep, char *components, |
1759 | __be32 **pp, int *buflen, | |
1760 | char esc_enter, char esc_exit) | |
81c3f413 | 1761 | { |
2ebbc012 AV |
1762 | __be32 *p = *pp; |
1763 | __be32 *countp = p; | |
81c3f413 | 1764 | int strlen, count=0; |
e7a0444a | 1765 | char *str, *end, *next; |
81c3f413 BF |
1766 | |
1767 | dprintk("nfsd4_encode_components(%s)\n", components); | |
1768 | if ((*buflen -= 4) < 0) | |
1769 | return nfserr_resource; | |
1770 | WRITE32(0); /* We will fill this in with @count later */ | |
1771 | end = str = components; | |
1772 | while (*end) { | |
e7a0444a WAA |
1773 | bool found_esc = false; |
1774 | ||
1775 | /* try to parse as esc_start, ..., esc_end, sep */ | |
1776 | if (*str == esc_enter) { | |
1777 | for (; *end && (*end != esc_exit); end++) | |
1778 | /* find esc_exit or end of string */; | |
1779 | next = end + 1; | |
1780 | if (*end && (!*next || *next == sep)) { | |
1781 | str++; | |
1782 | found_esc = true; | |
1783 | } | |
1784 | } | |
1785 | ||
1786 | if (!found_esc) | |
1787 | for (; *end && (*end != sep); end++) | |
1788 | /* find sep or end of string */; | |
1789 | ||
81c3f413 BF |
1790 | strlen = end - str; |
1791 | if (strlen) { | |
1792 | if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0) | |
1793 | return nfserr_resource; | |
1794 | WRITE32(strlen); | |
1795 | WRITEMEM(str, strlen); | |
1796 | count++; | |
1797 | } | |
1798 | else | |
1799 | end++; | |
1800 | str = end; | |
1801 | } | |
1802 | *pp = p; | |
1803 | p = countp; | |
1804 | WRITE32(count); | |
1805 | return 0; | |
1806 | } | |
1807 | ||
e7a0444a WAA |
1808 | /* Encode as an array of strings the string given with components |
1809 | * separated @sep. | |
1810 | */ | |
1811 | static __be32 nfsd4_encode_components(char sep, char *components, | |
1812 | __be32 **pp, int *buflen) | |
1813 | { | |
1814 | return nfsd4_encode_components_esc(sep, components, pp, buflen, 0, 0); | |
1815 | } | |
1816 | ||
81c3f413 BF |
1817 | /* |
1818 | * encode a location element of a fs_locations structure | |
1819 | */ | |
b37ad28b | 1820 | static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location, |
2ebbc012 | 1821 | __be32 **pp, int *buflen) |
81c3f413 | 1822 | { |
b37ad28b | 1823 | __be32 status; |
2ebbc012 | 1824 | __be32 *p = *pp; |
81c3f413 | 1825 | |
e7a0444a WAA |
1826 | status = nfsd4_encode_components_esc(':', location->hosts, &p, buflen, |
1827 | '[', ']'); | |
81c3f413 BF |
1828 | if (status) |
1829 | return status; | |
1830 | status = nfsd4_encode_components('/', location->path, &p, buflen); | |
1831 | if (status) | |
1832 | return status; | |
1833 | *pp = p; | |
1834 | return 0; | |
1835 | } | |
1836 | ||
1837 | /* | |
ed748aac | 1838 | * Encode a path in RFC3530 'pathname4' format |
81c3f413 | 1839 | */ |
ed748aac TM |
1840 | static __be32 nfsd4_encode_path(const struct path *root, |
1841 | const struct path *path, __be32 **pp, int *buflen) | |
81c3f413 | 1842 | { |
301f0268 | 1843 | struct path cur = *path; |
ed748aac TM |
1844 | __be32 *p = *pp; |
1845 | struct dentry **components = NULL; | |
1846 | unsigned int ncomponents = 0; | |
1847 | __be32 err = nfserr_jukebox; | |
81c3f413 | 1848 | |
ed748aac | 1849 | dprintk("nfsd4_encode_components("); |
81c3f413 | 1850 | |
ed748aac TM |
1851 | path_get(&cur); |
1852 | /* First walk the path up to the nfsd root, and store the | |
1853 | * dentries/path components in an array. | |
1854 | */ | |
1855 | for (;;) { | |
1856 | if (cur.dentry == root->dentry && cur.mnt == root->mnt) | |
1857 | break; | |
1858 | if (cur.dentry == cur.mnt->mnt_root) { | |
1859 | if (follow_up(&cur)) | |
1860 | continue; | |
1861 | goto out_free; | |
1862 | } | |
1863 | if ((ncomponents & 15) == 0) { | |
1864 | struct dentry **new; | |
1865 | new = krealloc(components, | |
1866 | sizeof(*new) * (ncomponents + 16), | |
1867 | GFP_KERNEL); | |
1868 | if (!new) | |
1869 | goto out_free; | |
1870 | components = new; | |
1871 | } | |
1872 | components[ncomponents++] = cur.dentry; | |
1873 | cur.dentry = dget_parent(cur.dentry); | |
1874 | } | |
81c3f413 | 1875 | |
ed748aac TM |
1876 | *buflen -= 4; |
1877 | if (*buflen < 0) | |
1878 | goto out_free; | |
1879 | WRITE32(ncomponents); | |
1880 | ||
1881 | while (ncomponents) { | |
1882 | struct dentry *dentry = components[ncomponents - 1]; | |
301f0268 | 1883 | unsigned int len; |
ed748aac | 1884 | |
301f0268 AV |
1885 | spin_lock(&dentry->d_lock); |
1886 | len = dentry->d_name.len; | |
ed748aac | 1887 | *buflen -= 4 + (XDR_QUADLEN(len) << 2); |
301f0268 AV |
1888 | if (*buflen < 0) { |
1889 | spin_unlock(&dentry->d_lock); | |
ed748aac | 1890 | goto out_free; |
301f0268 | 1891 | } |
ed748aac TM |
1892 | WRITE32(len); |
1893 | WRITEMEM(dentry->d_name.name, len); | |
1894 | dprintk("/%s", dentry->d_name.name); | |
301f0268 | 1895 | spin_unlock(&dentry->d_lock); |
ed748aac TM |
1896 | dput(dentry); |
1897 | ncomponents--; | |
81c3f413 | 1898 | } |
ed748aac TM |
1899 | |
1900 | *pp = p; | |
1901 | err = 0; | |
1902 | out_free: | |
1903 | dprintk(")\n"); | |
1904 | while (ncomponents) | |
1905 | dput(components[--ncomponents]); | |
1906 | kfree(components); | |
1907 | path_put(&cur); | |
1908 | return err; | |
1909 | } | |
1910 | ||
1911 | static __be32 nfsd4_encode_fsloc_fsroot(struct svc_rqst *rqstp, | |
1912 | const struct path *path, __be32 **pp, int *buflen) | |
1913 | { | |
1914 | struct svc_export *exp_ps; | |
1915 | __be32 res; | |
1916 | ||
1917 | exp_ps = rqst_find_fsidzero_export(rqstp); | |
1918 | if (IS_ERR(exp_ps)) | |
1919 | return nfserrno(PTR_ERR(exp_ps)); | |
1920 | res = nfsd4_encode_path(&exp_ps->ex_path, path, pp, buflen); | |
1921 | exp_put(exp_ps); | |
1922 | return res; | |
81c3f413 BF |
1923 | } |
1924 | ||
1925 | /* | |
1926 | * encode a fs_locations structure | |
1927 | */ | |
b37ad28b | 1928 | static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp, |
81c3f413 | 1929 | struct svc_export *exp, |
2ebbc012 | 1930 | __be32 **pp, int *buflen) |
81c3f413 | 1931 | { |
b37ad28b | 1932 | __be32 status; |
cc45f017 | 1933 | int i; |
2ebbc012 | 1934 | __be32 *p = *pp; |
81c3f413 | 1935 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
81c3f413 | 1936 | |
ed748aac | 1937 | status = nfsd4_encode_fsloc_fsroot(rqstp, &exp->ex_path, &p, buflen); |
81c3f413 BF |
1938 | if (status) |
1939 | return status; | |
1940 | if ((*buflen -= 4) < 0) | |
1941 | return nfserr_resource; | |
1942 | WRITE32(fslocs->locations_count); | |
1943 | for (i=0; i<fslocs->locations_count; i++) { | |
1944 | status = nfsd4_encode_fs_location4(&fslocs->locations[i], | |
1945 | &p, buflen); | |
1946 | if (status) | |
1947 | return status; | |
1948 | } | |
1949 | *pp = p; | |
1950 | return 0; | |
1951 | } | |
1da177e4 | 1952 | |
3d2544b1 BF |
1953 | static u32 nfs4_file_type(umode_t mode) |
1954 | { | |
1955 | switch (mode & S_IFMT) { | |
1956 | case S_IFIFO: return NF4FIFO; | |
1957 | case S_IFCHR: return NF4CHR; | |
1958 | case S_IFDIR: return NF4DIR; | |
1959 | case S_IFBLK: return NF4BLK; | |
1960 | case S_IFLNK: return NF4LNK; | |
1961 | case S_IFREG: return NF4REG; | |
1962 | case S_IFSOCK: return NF4SOCK; | |
1963 | default: return NF4BAD; | |
1964 | }; | |
1965 | } | |
1da177e4 | 1966 | |
b37ad28b | 1967 | static inline __be32 |
ab8e4aee | 1968 | nfsd4_encode_aclname(struct svc_rqst *rqstp, struct nfs4_ace *ace, |
2ebbc012 | 1969 | __be32 **p, int *buflen) |
1da177e4 | 1970 | { |
3554116d BF |
1971 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
1972 | return nfs4_acl_write_who(ace->whotype, p, buflen); | |
1973 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) | |
1974 | return nfsd4_encode_group(rqstp, ace->who_gid, p, buflen); | |
1975 | else | |
1976 | return nfsd4_encode_user(rqstp, ace->who_uid, p, buflen); | |
1da177e4 LT |
1977 | } |
1978 | ||
42ca0993 BF |
1979 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
1980 | FATTR4_WORD0_RDATTR_ERROR) | |
1981 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
1982 | ||
18032ca0 DQ |
1983 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
1984 | static inline __be32 | |
1985 | nfsd4_encode_security_label(struct svc_rqst *rqstp, void *context, int len, __be32 **pp, int *buflen) | |
1986 | { | |
1987 | __be32 *p = *pp; | |
1988 | ||
1989 | if (*buflen < ((XDR_QUADLEN(len) << 2) + 4 + 4 + 4)) | |
1990 | return nfserr_resource; | |
1991 | ||
1992 | /* | |
1993 | * For now we use a 0 here to indicate the null translation; in | |
1994 | * the future we may place a call to translation code here. | |
1995 | */ | |
1996 | if ((*buflen -= 8) < 0) | |
1997 | return nfserr_resource; | |
1998 | ||
1999 | WRITE32(0); /* lfs */ | |
2000 | WRITE32(0); /* pi */ | |
2001 | p = xdr_encode_opaque(p, context, len); | |
2002 | *buflen -= (XDR_QUADLEN(len) << 2) + 4; | |
2003 | ||
2004 | *pp = p; | |
2005 | return 0; | |
2006 | } | |
2007 | #else | |
2008 | static inline __be32 | |
ba4e55bb | 2009 | nfsd4_encode_security_label(struct svc_rqst *rqstp, void *context, int len, __be32 **pp, int *buflen) |
18032ca0 DQ |
2010 | { return 0; } |
2011 | #endif | |
2012 | ||
b37ad28b | 2013 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
42ca0993 BF |
2014 | { |
2015 | /* As per referral draft: */ | |
2016 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
2017 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
2018 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
2019 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
2020 | *rdattr_err = NFSERR_MOVED; | |
2021 | else | |
2022 | return nfserr_moved; | |
2023 | } | |
2024 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
2025 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
2026 | return 0; | |
2027 | } | |
1da177e4 | 2028 | |
ae7095a7 BF |
2029 | |
2030 | static int get_parent_attributes(struct svc_export *exp, struct kstat *stat) | |
2031 | { | |
2032 | struct path path = exp->ex_path; | |
2033 | int err; | |
2034 | ||
2035 | path_get(&path); | |
2036 | while (follow_up(&path)) { | |
2037 | if (path.dentry != path.mnt->mnt_root) | |
2038 | break; | |
2039 | } | |
3dadecce | 2040 | err = vfs_getattr(&path, stat); |
ae7095a7 BF |
2041 | path_put(&path); |
2042 | return err; | |
2043 | } | |
2044 | ||
1da177e4 LT |
2045 | /* |
2046 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
2047 | * ourselves. | |
2048 | * | |
84822d0b | 2049 | * countp is the buffer size in _words_ |
1da177e4 | 2050 | */ |
b37ad28b | 2051 | __be32 |
1da177e4 | 2052 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, |
84822d0b | 2053 | struct dentry *dentry, __be32 **buffer, int count, u32 *bmval, |
406a7ea9 | 2054 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
2055 | { |
2056 | u32 bmval0 = bmval[0]; | |
2057 | u32 bmval1 = bmval[1]; | |
7e705706 | 2058 | u32 bmval2 = bmval[2]; |
1da177e4 | 2059 | struct kstat stat; |
d50e6136 | 2060 | struct svc_fh *tempfh = NULL; |
1da177e4 | 2061 | struct kstatfs statfs; |
84822d0b | 2062 | int buflen = count << 2; |
2ebbc012 | 2063 | __be32 *attrlenp; |
1da177e4 LT |
2064 | u32 dummy; |
2065 | u64 dummy64; | |
42ca0993 | 2066 | u32 rdattr_err = 0; |
84822d0b | 2067 | __be32 *p = *buffer; |
b37ad28b | 2068 | __be32 status; |
b8dd7b9a | 2069 | int err; |
1da177e4 LT |
2070 | int aclsupport = 0; |
2071 | struct nfs4_acl *acl = NULL; | |
18032ca0 DQ |
2072 | void *context = NULL; |
2073 | int contextlen; | |
2074 | bool contextsupport = false; | |
7e705706 AA |
2075 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
2076 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
2077 | struct path path = { |
2078 | .mnt = exp->ex_path.mnt, | |
2079 | .dentry = dentry, | |
2080 | }; | |
3d733711 | 2081 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
1da177e4 LT |
2082 | |
2083 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
7e705706 AA |
2084 | BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); |
2085 | BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); | |
2086 | BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); | |
1da177e4 | 2087 | |
42ca0993 | 2088 | if (exp->ex_fslocs.migrated) { |
7e705706 | 2089 | BUG_ON(bmval[2]); |
42ca0993 BF |
2090 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); |
2091 | if (status) | |
2092 | goto out; | |
2093 | } | |
2094 | ||
3dadecce | 2095 | err = vfs_getattr(&path, &stat); |
b8dd7b9a | 2096 | if (err) |
1da177e4 | 2097 | goto out_nfserr; |
a16e92ed BF |
2098 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | |
2099 | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
2100 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
2101 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 2102 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 2103 | if (err) |
1da177e4 LT |
2104 | goto out_nfserr; |
2105 | } | |
2106 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
d50e6136 BF |
2107 | tempfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); |
2108 | status = nfserr_jukebox; | |
2109 | if (!tempfh) | |
2110 | goto out; | |
2111 | fh_init(tempfh, NFS4_FHSIZE); | |
2112 | status = fh_compose(tempfh, exp, dentry, NULL); | |
1da177e4 LT |
2113 | if (status) |
2114 | goto out; | |
d50e6136 | 2115 | fhp = tempfh; |
1da177e4 LT |
2116 | } |
2117 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
2118 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
b8dd7b9a AV |
2119 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
2120 | aclsupport = (err == 0); | |
1da177e4 | 2121 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 2122 | if (err == -EOPNOTSUPP) |
1da177e4 | 2123 | bmval0 &= ~FATTR4_WORD0_ACL; |
b8dd7b9a | 2124 | else if (err == -EINVAL) { |
1da177e4 LT |
2125 | status = nfserr_attrnotsupp; |
2126 | goto out; | |
b8dd7b9a | 2127 | } else if (err != 0) |
1da177e4 LT |
2128 | goto out_nfserr; |
2129 | } | |
2130 | } | |
1da177e4 | 2131 | |
18032ca0 DQ |
2132 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
2133 | if ((bmval[2] & FATTR4_WORD2_SECURITY_LABEL) || | |
2134 | bmval[0] & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
2135 | err = security_inode_getsecctx(dentry->d_inode, | |
2136 | &context, &contextlen); | |
2137 | contextsupport = (err == 0); | |
2138 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { | |
2139 | if (err == -EOPNOTSUPP) | |
2140 | bmval2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2141 | else if (err) | |
2142 | goto out_nfserr; | |
2143 | } | |
2144 | } | |
2145 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ | |
2146 | ||
2b44f1ba BH |
2147 | if (bmval2) { |
2148 | if ((buflen -= 16) < 0) | |
2149 | goto out_resource; | |
7e705706 AA |
2150 | WRITE32(3); |
2151 | WRITE32(bmval0); | |
2152 | WRITE32(bmval1); | |
2153 | WRITE32(bmval2); | |
2b44f1ba BH |
2154 | } else if (bmval1) { |
2155 | if ((buflen -= 12) < 0) | |
2156 | goto out_resource; | |
7e705706 AA |
2157 | WRITE32(2); |
2158 | WRITE32(bmval0); | |
2159 | WRITE32(bmval1); | |
2160 | } else { | |
2b44f1ba BH |
2161 | if ((buflen -= 8) < 0) |
2162 | goto out_resource; | |
7e705706 AA |
2163 | WRITE32(1); |
2164 | WRITE32(bmval0); | |
2165 | } | |
1da177e4 LT |
2166 | attrlenp = p++; /* to be backfilled later */ |
2167 | ||
2168 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
7e705706 AA |
2169 | u32 word0 = nfsd_suppattrs0(minorversion); |
2170 | u32 word1 = nfsd_suppattrs1(minorversion); | |
2171 | u32 word2 = nfsd_suppattrs2(minorversion); | |
2172 | ||
42ca0993 BF |
2173 | if (!aclsupport) |
2174 | word0 &= ~FATTR4_WORD0_ACL; | |
18032ca0 DQ |
2175 | if (!contextsupport) |
2176 | word2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
7e705706 | 2177 | if (!word2) { |
2b44f1ba BH |
2178 | if ((buflen -= 12) < 0) |
2179 | goto out_resource; | |
7e705706 AA |
2180 | WRITE32(2); |
2181 | WRITE32(word0); | |
2182 | WRITE32(word1); | |
2183 | } else { | |
2b44f1ba BH |
2184 | if ((buflen -= 16) < 0) |
2185 | goto out_resource; | |
7e705706 AA |
2186 | WRITE32(3); |
2187 | WRITE32(word0); | |
2188 | WRITE32(word1); | |
2189 | WRITE32(word2); | |
2190 | } | |
1da177e4 LT |
2191 | } |
2192 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
2193 | if ((buflen -= 4) < 0) | |
2194 | goto out_resource; | |
3d2544b1 | 2195 | dummy = nfs4_file_type(stat.mode); |
6b6d8137 BF |
2196 | if (dummy == NF4BAD) { |
2197 | status = nfserr_serverfault; | |
2198 | goto out; | |
2199 | } | |
1da177e4 LT |
2200 | WRITE32(dummy); |
2201 | } | |
2202 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
2203 | if ((buflen -= 4) < 0) | |
2204 | goto out_resource; | |
49640001 | 2205 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
e34ac862 | 2206 | WRITE32(NFS4_FH_PERSISTENT); |
49640001 | 2207 | else |
e34ac862 | 2208 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
1da177e4 LT |
2209 | } |
2210 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
1da177e4 LT |
2211 | if ((buflen -= 8) < 0) |
2212 | goto out_resource; | |
c654b8a9 | 2213 | write_change(&p, &stat, dentry->d_inode); |
1da177e4 LT |
2214 | } |
2215 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
2216 | if ((buflen -= 8) < 0) | |
2217 | goto out_resource; | |
2218 | WRITE64(stat.size); | |
2219 | } | |
2220 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
2221 | if ((buflen -= 4) < 0) | |
2222 | goto out_resource; | |
2223 | WRITE32(1); | |
2224 | } | |
2225 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
2226 | if ((buflen -= 4) < 0) | |
2227 | goto out_resource; | |
2228 | WRITE32(1); | |
2229 | } | |
2230 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
2231 | if ((buflen -= 4) < 0) | |
2232 | goto out_resource; | |
2233 | WRITE32(0); | |
2234 | } | |
2235 | if (bmval0 & FATTR4_WORD0_FSID) { | |
2236 | if ((buflen -= 16) < 0) | |
2237 | goto out_resource; | |
42ca0993 BF |
2238 | if (exp->ex_fslocs.migrated) { |
2239 | WRITE64(NFS4_REFERRAL_FSID_MAJOR); | |
2240 | WRITE64(NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
2241 | } else switch(fsid_source(fhp)) { |
2242 | case FSIDSOURCE_FSID: | |
1da177e4 LT |
2243 | WRITE64((u64)exp->ex_fsid); |
2244 | WRITE64((u64)0); | |
af6a4e28 N |
2245 | break; |
2246 | case FSIDSOURCE_DEV: | |
1da177e4 LT |
2247 | WRITE32(0); |
2248 | WRITE32(MAJOR(stat.dev)); | |
2249 | WRITE32(0); | |
2250 | WRITE32(MINOR(stat.dev)); | |
af6a4e28 N |
2251 | break; |
2252 | case FSIDSOURCE_UUID: | |
2253 | WRITEMEM(exp->ex_uuid, 16); | |
2254 | break; | |
1da177e4 LT |
2255 | } |
2256 | } | |
2257 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
2258 | if ((buflen -= 4) < 0) | |
2259 | goto out_resource; | |
2260 | WRITE32(0); | |
2261 | } | |
2262 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
2263 | if ((buflen -= 4) < 0) | |
2264 | goto out_resource; | |
3d733711 | 2265 | WRITE32(nn->nfsd4_lease); |
1da177e4 LT |
2266 | } |
2267 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
2268 | if ((buflen -= 4) < 0) | |
2269 | goto out_resource; | |
42ca0993 | 2270 | WRITE32(rdattr_err); |
1da177e4 LT |
2271 | } |
2272 | if (bmval0 & FATTR4_WORD0_ACL) { | |
2273 | struct nfs4_ace *ace; | |
1da177e4 LT |
2274 | |
2275 | if (acl == NULL) { | |
2276 | if ((buflen -= 4) < 0) | |
2277 | goto out_resource; | |
2278 | ||
2279 | WRITE32(0); | |
2280 | goto out_acl; | |
2281 | } | |
2282 | if ((buflen -= 4) < 0) | |
2283 | goto out_resource; | |
2284 | WRITE32(acl->naces); | |
2285 | ||
28e05dd8 | 2286 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
1da177e4 LT |
2287 | if ((buflen -= 4*3) < 0) |
2288 | goto out_resource; | |
2289 | WRITE32(ace->type); | |
2290 | WRITE32(ace->flag); | |
2291 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); | |
ab8e4aee | 2292 | status = nfsd4_encode_aclname(rqstp, ace, &p, &buflen); |
1da177e4 LT |
2293 | if (status) |
2294 | goto out; | |
2295 | } | |
2296 | } | |
2297 | out_acl: | |
2298 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
2299 | if ((buflen -= 4) < 0) | |
2300 | goto out_resource; | |
2301 | WRITE32(aclsupport ? | |
2302 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); | |
2303 | } | |
2304 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
2305 | if ((buflen -= 4) < 0) | |
2306 | goto out_resource; | |
2307 | WRITE32(1); | |
2308 | } | |
2309 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
2310 | if ((buflen -= 4) < 0) | |
2311 | goto out_resource; | |
2930d381 | 2312 | WRITE32(0); |
1da177e4 LT |
2313 | } |
2314 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
2315 | if ((buflen -= 4) < 0) | |
2316 | goto out_resource; | |
2317 | WRITE32(1); | |
2318 | } | |
2319 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
2320 | if ((buflen -= 4) < 0) | |
2321 | goto out_resource; | |
2322 | WRITE32(1); | |
2323 | } | |
2324 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
2325 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; | |
2326 | if (buflen < 0) | |
2327 | goto out_resource; | |
2328 | WRITE32(fhp->fh_handle.fh_size); | |
2329 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); | |
2330 | } | |
2331 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
2332 | if ((buflen -= 8) < 0) | |
2333 | goto out_resource; | |
40ee5dc6 | 2334 | WRITE64(stat.ino); |
1da177e4 LT |
2335 | } |
2336 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
2337 | if ((buflen -= 8) < 0) | |
2338 | goto out_resource; | |
2339 | WRITE64((u64) statfs.f_ffree); | |
2340 | } | |
2341 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
2342 | if ((buflen -= 8) < 0) | |
2343 | goto out_resource; | |
2344 | WRITE64((u64) statfs.f_ffree); | |
2345 | } | |
2346 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
2347 | if ((buflen -= 8) < 0) | |
2348 | goto out_resource; | |
2349 | WRITE64((u64) statfs.f_files); | |
2350 | } | |
81c3f413 BF |
2351 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
2352 | status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); | |
81c3f413 BF |
2353 | if (status) |
2354 | goto out; | |
2355 | } | |
1da177e4 LT |
2356 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
2357 | if ((buflen -= 4) < 0) | |
2358 | goto out_resource; | |
2359 | WRITE32(1); | |
2360 | } | |
2361 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
2362 | if ((buflen -= 8) < 0) | |
2363 | goto out_resource; | |
aea240f4 | 2364 | WRITE64(exp->ex_path.mnt->mnt_sb->s_maxbytes); |
1da177e4 LT |
2365 | } |
2366 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
2367 | if ((buflen -= 4) < 0) | |
2368 | goto out_resource; | |
2369 | WRITE32(255); | |
2370 | } | |
2371 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
2372 | if ((buflen -= 4) < 0) | |
2373 | goto out_resource; | |
a16e92ed | 2374 | WRITE32(statfs.f_namelen); |
1da177e4 LT |
2375 | } |
2376 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
2377 | if ((buflen -= 8) < 0) | |
2378 | goto out_resource; | |
7adae489 | 2379 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2380 | } |
2381 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
2382 | if ((buflen -= 8) < 0) | |
2383 | goto out_resource; | |
7adae489 | 2384 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2385 | } |
2386 | if (bmval1 & FATTR4_WORD1_MODE) { | |
2387 | if ((buflen -= 4) < 0) | |
2388 | goto out_resource; | |
2389 | WRITE32(stat.mode & S_IALLUGO); | |
2390 | } | |
2391 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
2392 | if ((buflen -= 4) < 0) | |
2393 | goto out_resource; | |
2394 | WRITE32(1); | |
2395 | } | |
2396 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
2397 | if ((buflen -= 4) < 0) | |
2398 | goto out_resource; | |
2399 | WRITE32(stat.nlink); | |
2400 | } | |
2401 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
2402 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); | |
1da177e4 LT |
2403 | if (status) |
2404 | goto out; | |
2405 | } | |
2406 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
2407 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); | |
1da177e4 LT |
2408 | if (status) |
2409 | goto out; | |
2410 | } | |
2411 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
2412 | if ((buflen -= 8) < 0) | |
2413 | goto out_resource; | |
2414 | WRITE32((u32) MAJOR(stat.rdev)); | |
2415 | WRITE32((u32) MINOR(stat.rdev)); | |
2416 | } | |
2417 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
2418 | if ((buflen -= 8) < 0) | |
2419 | goto out_resource; | |
2420 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
2421 | WRITE64(dummy64); | |
2422 | } | |
2423 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
2424 | if ((buflen -= 8) < 0) | |
2425 | goto out_resource; | |
2426 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
2427 | WRITE64(dummy64); | |
2428 | } | |
2429 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
2430 | if ((buflen -= 8) < 0) | |
2431 | goto out_resource; | |
2432 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
2433 | WRITE64(dummy64); | |
2434 | } | |
2435 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
2436 | if ((buflen -= 8) < 0) | |
2437 | goto out_resource; | |
2438 | dummy64 = (u64)stat.blocks << 9; | |
2439 | WRITE64(dummy64); | |
2440 | } | |
2441 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
2442 | if ((buflen -= 12) < 0) | |
2443 | goto out_resource; | |
bf8d9097 | 2444 | WRITE64((s64)stat.atime.tv_sec); |
1da177e4 LT |
2445 | WRITE32(stat.atime.tv_nsec); |
2446 | } | |
2447 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
2448 | if ((buflen -= 12) < 0) | |
2449 | goto out_resource; | |
2450 | WRITE32(0); | |
2451 | WRITE32(1); | |
2452 | WRITE32(0); | |
2453 | } | |
2454 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
2455 | if ((buflen -= 12) < 0) | |
2456 | goto out_resource; | |
bf8d9097 | 2457 | WRITE64((s64)stat.ctime.tv_sec); |
1da177e4 LT |
2458 | WRITE32(stat.ctime.tv_nsec); |
2459 | } | |
2460 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
2461 | if ((buflen -= 12) < 0) | |
2462 | goto out_resource; | |
bf8d9097 | 2463 | WRITE64((s64)stat.mtime.tv_sec); |
1da177e4 LT |
2464 | WRITE32(stat.mtime.tv_nsec); |
2465 | } | |
2466 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
1da177e4 LT |
2467 | if ((buflen -= 8) < 0) |
2468 | goto out_resource; | |
406a7ea9 FF |
2469 | /* |
2470 | * Get parent's attributes if not ignoring crossmount | |
2471 | * and this is the root of a cross-mounted filesystem. | |
2472 | */ | |
2473 | if (ignore_crossmnt == 0 && | |
ae7095a7 BF |
2474 | dentry == exp->ex_path.mnt->mnt_root) |
2475 | get_parent_attributes(exp, &stat); | |
40ee5dc6 | 2476 | WRITE64(stat.ino); |
1da177e4 | 2477 | } |
18032ca0 DQ |
2478 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { |
2479 | status = nfsd4_encode_security_label(rqstp, context, | |
2480 | contextlen, &p, &buflen); | |
2481 | if (status) | |
2482 | goto out; | |
2483 | } | |
8c18f205 | 2484 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
de3997a7 BF |
2485 | if ((buflen -= 16) < 0) |
2486 | goto out_resource; | |
8c18f205 BH |
2487 | WRITE32(3); |
2488 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0); | |
2489 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1); | |
2490 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2); | |
2491 | } | |
7e705706 | 2492 | |
1da177e4 | 2493 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); |
84822d0b | 2494 | *buffer = p; |
1da177e4 LT |
2495 | status = nfs_ok; |
2496 | ||
2497 | out: | |
ba4e55bb | 2498 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
18032ca0 DQ |
2499 | if (context) |
2500 | security_release_secctx(context, contextlen); | |
ba4e55bb | 2501 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ |
28e05dd8 | 2502 | kfree(acl); |
18df11d0 | 2503 | if (tempfh) { |
d50e6136 | 2504 | fh_put(tempfh); |
18df11d0 YZ |
2505 | kfree(tempfh); |
2506 | } | |
1da177e4 LT |
2507 | return status; |
2508 | out_nfserr: | |
b8dd7b9a | 2509 | status = nfserrno(err); |
1da177e4 LT |
2510 | goto out; |
2511 | out_resource: | |
1da177e4 LT |
2512 | status = nfserr_resource; |
2513 | goto out; | |
1da177e4 LT |
2514 | } |
2515 | ||
c0ce6ec8 BF |
2516 | static inline int attributes_need_mount(u32 *bmval) |
2517 | { | |
2518 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2519 | return 1; | |
2520 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2521 | return 1; | |
2522 | return 0; | |
2523 | } | |
2524 | ||
b37ad28b | 2525 | static __be32 |
1da177e4 | 2526 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, |
84822d0b | 2527 | const char *name, int namlen, __be32 **p, int buflen) |
1da177e4 LT |
2528 | { |
2529 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2530 | struct dentry *dentry; | |
b37ad28b | 2531 | __be32 nfserr; |
406a7ea9 | 2532 | int ignore_crossmnt = 0; |
1da177e4 LT |
2533 | |
2534 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
2535 | if (IS_ERR(dentry)) | |
2536 | return nfserrno(PTR_ERR(dentry)); | |
b2c0cea6 BF |
2537 | if (!dentry->d_inode) { |
2538 | /* | |
2539 | * nfsd_buffered_readdir drops the i_mutex between | |
2540 | * readdir and calling this callback, leaving a window | |
2541 | * where this directory entry could have gone away. | |
2542 | */ | |
2543 | dput(dentry); | |
2544 | return nfserr_noent; | |
2545 | } | |
1da177e4 LT |
2546 | |
2547 | exp_get(exp); | |
406a7ea9 FF |
2548 | /* |
2549 | * In the case of a mountpoint, the client may be asking for | |
2550 | * attributes that are only properties of the underlying filesystem | |
2551 | * as opposed to the cross-mounted file system. In such a case, | |
2552 | * we will not follow the cross mount and will fill the attribtutes | |
2553 | * directly from the mountpoint dentry. | |
2554 | */ | |
3227fa41 | 2555 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
2556 | int err; |
2557 | ||
3227fa41 BF |
2558 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
2559 | && !attributes_need_mount(cd->rd_bmval)) { | |
2560 | ignore_crossmnt = 1; | |
2561 | goto out_encode; | |
2562 | } | |
dcb488a3 AA |
2563 | /* |
2564 | * Why the heck aren't we just using nfsd_lookup?? | |
2565 | * Different "."/".." handling? Something else? | |
2566 | * At least, add a comment here to explain.... | |
2567 | */ | |
021d3a72 BF |
2568 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
2569 | if (err) { | |
2570 | nfserr = nfserrno(err); | |
1da177e4 LT |
2571 | goto out_put; |
2572 | } | |
dcb488a3 AA |
2573 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
2574 | if (nfserr) | |
2575 | goto out_put; | |
1da177e4 LT |
2576 | |
2577 | } | |
3227fa41 | 2578 | out_encode: |
1da177e4 | 2579 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, |
406a7ea9 | 2580 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
2581 | out_put: |
2582 | dput(dentry); | |
2583 | exp_put(exp); | |
2584 | return nfserr; | |
2585 | } | |
2586 | ||
2ebbc012 | 2587 | static __be32 * |
b37ad28b | 2588 | nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr) |
1da177e4 | 2589 | { |
1da177e4 LT |
2590 | if (buflen < 6) |
2591 | return NULL; | |
2592 | *p++ = htonl(2); | |
2593 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
2594 | *p++ = htonl(0); /* bmval1 */ | |
2595 | ||
87915c64 | 2596 | *p++ = htonl(4); /* attribute length */ |
1da177e4 | 2597 | *p++ = nfserr; /* no htonl */ |
1da177e4 LT |
2598 | return p; |
2599 | } | |
2600 | ||
2601 | static int | |
a0ad13ef N |
2602 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
2603 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 2604 | { |
a0ad13ef | 2605 | struct readdir_cd *ccd = ccdv; |
1da177e4 LT |
2606 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
2607 | int buflen; | |
2ebbc012 | 2608 | __be32 *p = cd->buffer; |
b2c0cea6 | 2609 | __be32 *cookiep; |
b37ad28b | 2610 | __be32 nfserr = nfserr_toosmall; |
1da177e4 LT |
2611 | |
2612 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
2613 | if (name && isdotent(name, namlen)) { | |
2614 | cd->common.err = nfs_ok; | |
2615 | return 0; | |
2616 | } | |
2617 | ||
2618 | if (cd->offset) | |
2619 | xdr_encode_hyper(cd->offset, (u64) offset); | |
2620 | ||
2621 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); | |
2622 | if (buflen < 0) | |
2623 | goto fail; | |
2624 | ||
2625 | *p++ = xdr_one; /* mark entry present */ | |
b2c0cea6 | 2626 | cookiep = p; |
1da177e4 LT |
2627 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
2628 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
2629 | ||
84822d0b | 2630 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, &p, buflen); |
1da177e4 LT |
2631 | switch (nfserr) { |
2632 | case nfs_ok: | |
1da177e4 LT |
2633 | break; |
2634 | case nfserr_resource: | |
2635 | nfserr = nfserr_toosmall; | |
2636 | goto fail; | |
b2c0cea6 BF |
2637 | case nfserr_noent: |
2638 | goto skip_entry; | |
1da177e4 LT |
2639 | default: |
2640 | /* | |
2641 | * If the client requested the RDATTR_ERROR attribute, | |
2642 | * we stuff the error code into this attribute | |
2643 | * and continue. If this attribute was not requested, | |
2644 | * then in accordance with the spec, we fail the | |
2645 | * entire READDIR operation(!) | |
2646 | */ | |
2647 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
2648 | goto fail; | |
1da177e4 | 2649 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
34081efc FI |
2650 | if (p == NULL) { |
2651 | nfserr = nfserr_toosmall; | |
1da177e4 | 2652 | goto fail; |
34081efc | 2653 | } |
1da177e4 LT |
2654 | } |
2655 | cd->buflen -= (p - cd->buffer); | |
2656 | cd->buffer = p; | |
b2c0cea6 BF |
2657 | cd->offset = cookiep; |
2658 | skip_entry: | |
1da177e4 LT |
2659 | cd->common.err = nfs_ok; |
2660 | return 0; | |
2661 | fail: | |
2662 | cd->common.err = nfserr; | |
2663 | return -EINVAL; | |
2664 | } | |
2665 | ||
e2f282b9 BH |
2666 | static void |
2667 | nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid) | |
2668 | { | |
bc749ca4 | 2669 | __be32 *p; |
e2f282b9 BH |
2670 | |
2671 | RESERVE_SPACE(sizeof(stateid_t)); | |
2672 | WRITE32(sid->si_generation); | |
2673 | WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
2674 | ADJUST_ARGS(); | |
2675 | } | |
2676 | ||
695e12f8 | 2677 | static __be32 |
b37ad28b | 2678 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 2679 | { |
bc749ca4 | 2680 | __be32 *p; |
1da177e4 LT |
2681 | |
2682 | if (!nfserr) { | |
2683 | RESERVE_SPACE(8); | |
2684 | WRITE32(access->ac_supported); | |
2685 | WRITE32(access->ac_resp_access); | |
2686 | ADJUST_ARGS(); | |
2687 | } | |
695e12f8 | 2688 | return nfserr; |
1da177e4 LT |
2689 | } |
2690 | ||
1d1bc8f2 BF |
2691 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
2692 | { | |
2693 | __be32 *p; | |
2694 | ||
2695 | if (!nfserr) { | |
2696 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 8); | |
2697 | WRITEMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
2698 | WRITE32(bcts->dir); | |
6e67b5d1 | 2699 | /* Sorry, we do not yet support RDMA over 4.1: */ |
1d1bc8f2 BF |
2700 | WRITE32(0); |
2701 | ADJUST_ARGS(); | |
2702 | } | |
2703 | return nfserr; | |
2704 | } | |
2705 | ||
695e12f8 | 2706 | static __be32 |
b37ad28b | 2707 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 | 2708 | { |
e2f282b9 BH |
2709 | if (!nfserr) |
2710 | nfsd4_encode_stateid(resp, &close->cl_stateid); | |
2711 | ||
695e12f8 | 2712 | return nfserr; |
1da177e4 LT |
2713 | } |
2714 | ||
2715 | ||
695e12f8 | 2716 | static __be32 |
b37ad28b | 2717 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 2718 | { |
bc749ca4 | 2719 | __be32 *p; |
1da177e4 LT |
2720 | |
2721 | if (!nfserr) { | |
ab4684d1 CL |
2722 | RESERVE_SPACE(NFS4_VERIFIER_SIZE); |
2723 | WRITEMEM(commit->co_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 LT |
2724 | ADJUST_ARGS(); |
2725 | } | |
695e12f8 | 2726 | return nfserr; |
1da177e4 LT |
2727 | } |
2728 | ||
695e12f8 | 2729 | static __be32 |
b37ad28b | 2730 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 2731 | { |
bc749ca4 | 2732 | __be32 *p; |
1da177e4 LT |
2733 | |
2734 | if (!nfserr) { | |
2735 | RESERVE_SPACE(32); | |
c654b8a9 | 2736 | write_cinfo(&p, &create->cr_cinfo); |
1da177e4 LT |
2737 | WRITE32(2); |
2738 | WRITE32(create->cr_bmval[0]); | |
2739 | WRITE32(create->cr_bmval[1]); | |
2740 | ADJUST_ARGS(); | |
2741 | } | |
695e12f8 | 2742 | return nfserr; |
1da177e4 LT |
2743 | } |
2744 | ||
b37ad28b AV |
2745 | static __be32 |
2746 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
2747 | { |
2748 | struct svc_fh *fhp = getattr->ga_fhp; | |
2749 | int buflen; | |
2750 | ||
2751 | if (nfserr) | |
2752 | return nfserr; | |
2753 | ||
2754 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); | |
2755 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, | |
84822d0b | 2756 | &resp->p, buflen, getattr->ga_bmval, |
406a7ea9 | 2757 | resp->rqstp, 0); |
1da177e4 LT |
2758 | return nfserr; |
2759 | } | |
2760 | ||
695e12f8 BH |
2761 | static __be32 |
2762 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 2763 | { |
695e12f8 | 2764 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 2765 | unsigned int len; |
bc749ca4 | 2766 | __be32 *p; |
1da177e4 LT |
2767 | |
2768 | if (!nfserr) { | |
2769 | len = fhp->fh_handle.fh_size; | |
2770 | RESERVE_SPACE(len + 4); | |
2771 | WRITE32(len); | |
2772 | WRITEMEM(&fhp->fh_handle.fh_base, len); | |
2773 | ADJUST_ARGS(); | |
2774 | } | |
695e12f8 | 2775 | return nfserr; |
1da177e4 LT |
2776 | } |
2777 | ||
2778 | /* | |
2779 | * Including all fields other than the name, a LOCK4denied structure requires | |
2780 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
2781 | */ | |
2782 | static void | |
2783 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) | |
2784 | { | |
7c13f344 | 2785 | struct xdr_netobj *conf = &ld->ld_owner; |
bc749ca4 | 2786 | __be32 *p; |
1da177e4 | 2787 | |
7c13f344 | 2788 | RESERVE_SPACE(32 + XDR_LEN(conf->len)); |
1da177e4 LT |
2789 | WRITE64(ld->ld_start); |
2790 | WRITE64(ld->ld_length); | |
2791 | WRITE32(ld->ld_type); | |
7c13f344 | 2792 | if (conf->len) { |
1da177e4 | 2793 | WRITEMEM(&ld->ld_clientid, 8); |
7c13f344 BF |
2794 | WRITE32(conf->len); |
2795 | WRITEMEM(conf->data, conf->len); | |
2796 | kfree(conf->data); | |
1da177e4 LT |
2797 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
2798 | WRITE64((u64)0); /* clientid */ | |
2799 | WRITE32(0); /* length of owner name */ | |
2800 | } | |
2801 | ADJUST_ARGS(); | |
2802 | } | |
2803 | ||
695e12f8 | 2804 | static __be32 |
b37ad28b | 2805 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 2806 | { |
e2f282b9 BH |
2807 | if (!nfserr) |
2808 | nfsd4_encode_stateid(resp, &lock->lk_resp_stateid); | |
2809 | else if (nfserr == nfserr_denied) | |
1da177e4 LT |
2810 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); |
2811 | ||
695e12f8 | 2812 | return nfserr; |
1da177e4 LT |
2813 | } |
2814 | ||
695e12f8 | 2815 | static __be32 |
b37ad28b | 2816 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 LT |
2817 | { |
2818 | if (nfserr == nfserr_denied) | |
2819 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); | |
695e12f8 | 2820 | return nfserr; |
1da177e4 LT |
2821 | } |
2822 | ||
695e12f8 | 2823 | static __be32 |
b37ad28b | 2824 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 | 2825 | { |
e2f282b9 BH |
2826 | if (!nfserr) |
2827 | nfsd4_encode_stateid(resp, &locku->lu_stateid); | |
2828 | ||
695e12f8 | 2829 | return nfserr; |
1da177e4 LT |
2830 | } |
2831 | ||
2832 | ||
695e12f8 | 2833 | static __be32 |
b37ad28b | 2834 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 2835 | { |
bc749ca4 | 2836 | __be32 *p; |
1da177e4 LT |
2837 | |
2838 | if (!nfserr) { | |
2839 | RESERVE_SPACE(20); | |
c654b8a9 | 2840 | write_cinfo(&p, &link->li_cinfo); |
1da177e4 LT |
2841 | ADJUST_ARGS(); |
2842 | } | |
695e12f8 | 2843 | return nfserr; |
1da177e4 LT |
2844 | } |
2845 | ||
2846 | ||
695e12f8 | 2847 | static __be32 |
b37ad28b | 2848 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 2849 | { |
bc749ca4 | 2850 | __be32 *p; |
1da177e4 LT |
2851 | |
2852 | if (nfserr) | |
2853 | goto out; | |
2854 | ||
e2f282b9 BH |
2855 | nfsd4_encode_stateid(resp, &open->op_stateid); |
2856 | RESERVE_SPACE(40); | |
c654b8a9 | 2857 | write_cinfo(&p, &open->op_cinfo); |
1da177e4 LT |
2858 | WRITE32(open->op_rflags); |
2859 | WRITE32(2); | |
2860 | WRITE32(open->op_bmval[0]); | |
2861 | WRITE32(open->op_bmval[1]); | |
2862 | WRITE32(open->op_delegate_type); | |
2863 | ADJUST_ARGS(); | |
2864 | ||
2865 | switch (open->op_delegate_type) { | |
2866 | case NFS4_OPEN_DELEGATE_NONE: | |
2867 | break; | |
2868 | case NFS4_OPEN_DELEGATE_READ: | |
e2f282b9 BH |
2869 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2870 | RESERVE_SPACE(20); | |
7b190fec | 2871 | WRITE32(open->op_recall); |
1da177e4 LT |
2872 | |
2873 | /* | |
2874 | * TODO: ACE's in delegations | |
2875 | */ | |
2876 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2877 | WRITE32(0); | |
2878 | WRITE32(0); | |
2879 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2880 | ADJUST_ARGS(); | |
2881 | break; | |
2882 | case NFS4_OPEN_DELEGATE_WRITE: | |
e2f282b9 BH |
2883 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2884 | RESERVE_SPACE(32); | |
1da177e4 LT |
2885 | WRITE32(0); |
2886 | ||
2887 | /* | |
2888 | * TODO: space_limit's in delegations | |
2889 | */ | |
2890 | WRITE32(NFS4_LIMIT_SIZE); | |
2891 | WRITE32(~(u32)0); | |
2892 | WRITE32(~(u32)0); | |
2893 | ||
2894 | /* | |
2895 | * TODO: ACE's in delegations | |
2896 | */ | |
2897 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2898 | WRITE32(0); | |
2899 | WRITE32(0); | |
2900 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2901 | ADJUST_ARGS(); | |
2902 | break; | |
d24433cd BH |
2903 | case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */ |
2904 | switch (open->op_why_no_deleg) { | |
2905 | case WND4_CONTENTION: | |
2906 | case WND4_RESOURCE: | |
2907 | RESERVE_SPACE(8); | |
2908 | WRITE32(open->op_why_no_deleg); | |
2909 | WRITE32(0); /* deleg signaling not supported yet */ | |
2910 | break; | |
2911 | default: | |
2912 | RESERVE_SPACE(4); | |
2913 | WRITE32(open->op_why_no_deleg); | |
2914 | } | |
2915 | ADJUST_ARGS(); | |
2916 | break; | |
1da177e4 LT |
2917 | default: |
2918 | BUG(); | |
2919 | } | |
2920 | /* XXX save filehandle here */ | |
2921 | out: | |
695e12f8 | 2922 | return nfserr; |
1da177e4 LT |
2923 | } |
2924 | ||
695e12f8 | 2925 | static __be32 |
b37ad28b | 2926 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 | 2927 | { |
e2f282b9 BH |
2928 | if (!nfserr) |
2929 | nfsd4_encode_stateid(resp, &oc->oc_resp_stateid); | |
1da177e4 | 2930 | |
695e12f8 | 2931 | return nfserr; |
1da177e4 LT |
2932 | } |
2933 | ||
695e12f8 | 2934 | static __be32 |
b37ad28b | 2935 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 | 2936 | { |
e2f282b9 BH |
2937 | if (!nfserr) |
2938 | nfsd4_encode_stateid(resp, &od->od_stateid); | |
1da177e4 | 2939 | |
695e12f8 | 2940 | return nfserr; |
1da177e4 LT |
2941 | } |
2942 | ||
b37ad28b AV |
2943 | static __be32 |
2944 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
44524359 | 2945 | struct nfsd4_read *read) |
1da177e4 LT |
2946 | { |
2947 | u32 eof; | |
afc59400 BF |
2948 | int v; |
2949 | struct page *page; | |
1da177e4 LT |
2950 | unsigned long maxcount; |
2951 | long len; | |
bc749ca4 | 2952 | __be32 *p; |
1da177e4 LT |
2953 | |
2954 | if (nfserr) | |
2955 | return nfserr; | |
2956 | if (resp->xbuf->page_len) | |
2957 | return nfserr_resource; | |
2958 | ||
2959 | RESERVE_SPACE(8); /* eof flag and byte count */ | |
2960 | ||
7adae489 | 2961 | maxcount = svc_max_payload(resp->rqstp); |
1da177e4 LT |
2962 | if (maxcount > read->rd_length) |
2963 | maxcount = read->rd_length; | |
2964 | ||
2965 | len = maxcount; | |
2966 | v = 0; | |
2967 | while (len > 0) { | |
afc59400 BF |
2968 | page = *(resp->rqstp->rq_next_page); |
2969 | if (!page) { /* ran out of pages */ | |
d5f50b0c BF |
2970 | maxcount -= len; |
2971 | break; | |
2972 | } | |
afc59400 | 2973 | resp->rqstp->rq_vec[v].iov_base = page_address(page); |
3cc03b16 | 2974 | resp->rqstp->rq_vec[v].iov_len = |
44524359 | 2975 | len < PAGE_SIZE ? len : PAGE_SIZE; |
afc59400 | 2976 | resp->rqstp->rq_next_page++; |
1da177e4 LT |
2977 | v++; |
2978 | len -= PAGE_SIZE; | |
2979 | } | |
2980 | read->rd_vlen = v; | |
2981 | ||
039a87ca | 2982 | nfserr = nfsd_read_file(read->rd_rqstp, read->rd_fhp, read->rd_filp, |
3cc03b16 | 2983 | read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, |
1da177e4 LT |
2984 | &maxcount); |
2985 | ||
1da177e4 LT |
2986 | if (nfserr) |
2987 | return nfserr; | |
44524359 N |
2988 | eof = (read->rd_offset + maxcount >= |
2989 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 LT |
2990 | |
2991 | WRITE32(eof); | |
2992 | WRITE32(maxcount); | |
2993 | ADJUST_ARGS(); | |
6ed6decc N |
2994 | resp->xbuf->head[0].iov_len = (char*)p |
2995 | - (char*)resp->xbuf->head[0].iov_base; | |
1da177e4 LT |
2996 | resp->xbuf->page_len = maxcount; |
2997 | ||
6ed6decc | 2998 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2999 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 3000 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 3001 | if (maxcount&3) { |
6ed6decc N |
3002 | RESERVE_SPACE(4); |
3003 | WRITE32(0); | |
1da177e4 LT |
3004 | resp->xbuf->tail[0].iov_base += maxcount&3; |
3005 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 3006 | ADJUST_ARGS(); |
1da177e4 LT |
3007 | } |
3008 | return 0; | |
3009 | } | |
3010 | ||
b37ad28b AV |
3011 | static __be32 |
3012 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
3013 | { |
3014 | int maxcount; | |
3015 | char *page; | |
bc749ca4 | 3016 | __be32 *p; |
1da177e4 LT |
3017 | |
3018 | if (nfserr) | |
3019 | return nfserr; | |
3020 | if (resp->xbuf->page_len) | |
3021 | return nfserr_resource; | |
afc59400 | 3022 | if (!*resp->rqstp->rq_next_page) |
d5f50b0c | 3023 | return nfserr_resource; |
1da177e4 | 3024 | |
afc59400 | 3025 | page = page_address(*(resp->rqstp->rq_next_page++)); |
1da177e4 LT |
3026 | |
3027 | maxcount = PAGE_SIZE; | |
3028 | RESERVE_SPACE(4); | |
3029 | ||
3030 | /* | |
3031 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
3032 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
3033 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
3034 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
3035 | */ | |
3036 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); | |
3037 | if (nfserr == nfserr_isdir) | |
3038 | return nfserr_inval; | |
3039 | if (nfserr) | |
3040 | return nfserr; | |
3041 | ||
3042 | WRITE32(maxcount); | |
3043 | ADJUST_ARGS(); | |
6ed6decc N |
3044 | resp->xbuf->head[0].iov_len = (char*)p |
3045 | - (char*)resp->xbuf->head[0].iov_base; | |
3046 | resp->xbuf->page_len = maxcount; | |
1da177e4 | 3047 | |
6ed6decc | 3048 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 3049 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 3050 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 3051 | if (maxcount&3) { |
6ed6decc N |
3052 | RESERVE_SPACE(4); |
3053 | WRITE32(0); | |
1da177e4 LT |
3054 | resp->xbuf->tail[0].iov_base += maxcount&3; |
3055 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 3056 | ADJUST_ARGS(); |
1da177e4 LT |
3057 | } |
3058 | return 0; | |
3059 | } | |
3060 | ||
b37ad28b AV |
3061 | static __be32 |
3062 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
3063 | { |
3064 | int maxcount; | |
3065 | loff_t offset; | |
2ebbc012 | 3066 | __be32 *page, *savep, *tailbase; |
bc749ca4 | 3067 | __be32 *p; |
1da177e4 LT |
3068 | |
3069 | if (nfserr) | |
3070 | return nfserr; | |
3071 | if (resp->xbuf->page_len) | |
3072 | return nfserr_resource; | |
afc59400 | 3073 | if (!*resp->rqstp->rq_next_page) |
d5f50b0c | 3074 | return nfserr_resource; |
1da177e4 | 3075 | |
ab4684d1 | 3076 | RESERVE_SPACE(NFS4_VERIFIER_SIZE); |
1da177e4 LT |
3077 | savep = p; |
3078 | ||
3079 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
3080 | WRITE32(0); | |
3081 | WRITE32(0); | |
3082 | ADJUST_ARGS(); | |
3083 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; | |
bb6e8a9f | 3084 | tailbase = p; |
1da177e4 LT |
3085 | |
3086 | maxcount = PAGE_SIZE; | |
3087 | if (maxcount > readdir->rd_maxcount) | |
3088 | maxcount = readdir->rd_maxcount; | |
3089 | ||
3090 | /* | |
3091 | * Convert from bytes to words, account for the two words already | |
3092 | * written, make sure to leave two words at the end for the next | |
3093 | * pointer and eof field. | |
3094 | */ | |
3095 | maxcount = (maxcount >> 2) - 4; | |
3096 | if (maxcount < 0) { | |
3097 | nfserr = nfserr_toosmall; | |
3098 | goto err_no_verf; | |
3099 | } | |
3100 | ||
afc59400 | 3101 | page = page_address(*(resp->rqstp->rq_next_page++)); |
1da177e4 LT |
3102 | readdir->common.err = 0; |
3103 | readdir->buflen = maxcount; | |
3104 | readdir->buffer = page; | |
3105 | readdir->offset = NULL; | |
3106 | ||
3107 | offset = readdir->rd_cookie; | |
3108 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
3109 | &offset, | |
3110 | &readdir->common, nfsd4_encode_dirent); | |
3111 | if (nfserr == nfs_ok && | |
3112 | readdir->common.err == nfserr_toosmall && | |
3113 | readdir->buffer == page) | |
3114 | nfserr = nfserr_toosmall; | |
1da177e4 LT |
3115 | if (nfserr) |
3116 | goto err_no_verf; | |
3117 | ||
3118 | if (readdir->offset) | |
3119 | xdr_encode_hyper(readdir->offset, offset); | |
3120 | ||
3121 | p = readdir->buffer; | |
3122 | *p++ = 0; /* no more entries */ | |
3123 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
afc59400 BF |
3124 | resp->xbuf->page_len = ((char*)p) - |
3125 | (char*)page_address(*(resp->rqstp->rq_next_page-1)); | |
1da177e4 | 3126 | |
bb6e8a9f | 3127 | /* Use rest of head for padding and remaining ops: */ |
bb6e8a9f | 3128 | resp->xbuf->tail[0].iov_base = tailbase; |
1da177e4 LT |
3129 | resp->xbuf->tail[0].iov_len = 0; |
3130 | resp->p = resp->xbuf->tail[0].iov_base; | |
bb6e8a9f | 3131 | resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; |
1da177e4 LT |
3132 | |
3133 | return 0; | |
3134 | err_no_verf: | |
3135 | p = savep; | |
3136 | ADJUST_ARGS(); | |
3137 | return nfserr; | |
3138 | } | |
3139 | ||
695e12f8 | 3140 | static __be32 |
b37ad28b | 3141 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 3142 | { |
bc749ca4 | 3143 | __be32 *p; |
1da177e4 LT |
3144 | |
3145 | if (!nfserr) { | |
3146 | RESERVE_SPACE(20); | |
c654b8a9 | 3147 | write_cinfo(&p, &remove->rm_cinfo); |
1da177e4 LT |
3148 | ADJUST_ARGS(); |
3149 | } | |
695e12f8 | 3150 | return nfserr; |
1da177e4 LT |
3151 | } |
3152 | ||
695e12f8 | 3153 | static __be32 |
b37ad28b | 3154 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 3155 | { |
bc749ca4 | 3156 | __be32 *p; |
1da177e4 LT |
3157 | |
3158 | if (!nfserr) { | |
3159 | RESERVE_SPACE(40); | |
c654b8a9 BF |
3160 | write_cinfo(&p, &rename->rn_sinfo); |
3161 | write_cinfo(&p, &rename->rn_tinfo); | |
1da177e4 LT |
3162 | ADJUST_ARGS(); |
3163 | } | |
695e12f8 | 3164 | return nfserr; |
1da177e4 LT |
3165 | } |
3166 | ||
695e12f8 | 3167 | static __be32 |
22b6dee8 | 3168 | nfsd4_do_encode_secinfo(struct nfsd4_compoundres *resp, |
a77c806f | 3169 | __be32 nfserr, struct svc_export *exp) |
dcb488a3 | 3170 | { |
676e4ebd | 3171 | u32 i, nflavs, supported; |
4796f457 BF |
3172 | struct exp_flavor_info *flavs; |
3173 | struct exp_flavor_info def_flavs[2]; | |
676e4ebd CL |
3174 | __be32 *p, *flavorsp; |
3175 | static bool report = true; | |
dcb488a3 AA |
3176 | |
3177 | if (nfserr) | |
3178 | goto out; | |
4796f457 BF |
3179 | if (exp->ex_nflavors) { |
3180 | flavs = exp->ex_flavors; | |
3181 | nflavs = exp->ex_nflavors; | |
3182 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
3183 | flavs = def_flavs; | |
3184 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
3185 | nflavs = 2; | |
3186 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
3187 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
3188 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
3189 | nflavs = 1; | |
3190 | flavs[0].pseudoflavor | |
3191 | = svcauth_gss_flavor(exp->ex_client); | |
3192 | } else { | |
3193 | nflavs = 1; | |
3194 | flavs[0].pseudoflavor | |
3195 | = exp->ex_client->flavour->flavour; | |
3196 | } | |
3197 | } | |
3198 | ||
676e4ebd | 3199 | supported = 0; |
dcb488a3 | 3200 | RESERVE_SPACE(4); |
676e4ebd | 3201 | flavorsp = p++; /* to be backfilled later */ |
dcb488a3 | 3202 | ADJUST_ARGS(); |
676e4ebd | 3203 | |
4796f457 | 3204 | for (i = 0; i < nflavs; i++) { |
676e4ebd | 3205 | rpc_authflavor_t pf = flavs[i].pseudoflavor; |
a77c806f | 3206 | struct rpcsec_gss_info info; |
dcb488a3 | 3207 | |
676e4ebd CL |
3208 | if (rpcauth_get_gssinfo(pf, &info) == 0) { |
3209 | supported++; | |
a9f7b4a0 | 3210 | RESERVE_SPACE(4 + 4 + XDR_LEN(info.oid.len) + 4 + 4); |
dcb488a3 | 3211 | WRITE32(RPC_AUTH_GSS); |
a77c806f CL |
3212 | WRITE32(info.oid.len); |
3213 | WRITEMEM(info.oid.data, info.oid.len); | |
a77c806f | 3214 | WRITE32(info.qop); |
a77c806f | 3215 | WRITE32(info.service); |
dcb488a3 | 3216 | ADJUST_ARGS(); |
676e4ebd CL |
3217 | } else if (pf < RPC_AUTH_MAXFLAVOR) { |
3218 | supported++; | |
dcb488a3 | 3219 | RESERVE_SPACE(4); |
676e4ebd | 3220 | WRITE32(pf); |
dcb488a3 | 3221 | ADJUST_ARGS(); |
676e4ebd CL |
3222 | } else { |
3223 | if (report) | |
3224 | pr_warn("NFS: SECINFO: security flavor %u " | |
3225 | "is not supported\n", pf); | |
dcb488a3 AA |
3226 | } |
3227 | } | |
a77c806f | 3228 | |
676e4ebd CL |
3229 | if (nflavs != supported) |
3230 | report = false; | |
3231 | *flavorsp = htonl(supported); | |
3232 | ||
dcb488a3 AA |
3233 | out: |
3234 | if (exp) | |
3235 | exp_put(exp); | |
695e12f8 | 3236 | return nfserr; |
dcb488a3 AA |
3237 | } |
3238 | ||
22b6dee8 MJ |
3239 | static __be32 |
3240 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3241 | struct nfsd4_secinfo *secinfo) | |
3242 | { | |
3243 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->si_exp); | |
3244 | } | |
3245 | ||
3246 | static __be32 | |
3247 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3248 | struct nfsd4_secinfo_no_name *secinfo) | |
3249 | { | |
3250 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->sin_exp); | |
3251 | } | |
3252 | ||
1da177e4 LT |
3253 | /* |
3254 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
3255 | * regardless of the error status. | |
3256 | */ | |
695e12f8 | 3257 | static __be32 |
b37ad28b | 3258 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 3259 | { |
bc749ca4 | 3260 | __be32 *p; |
1da177e4 | 3261 | |
18032ca0 | 3262 | RESERVE_SPACE(16); |
1da177e4 | 3263 | if (nfserr) { |
18032ca0 DQ |
3264 | WRITE32(3); |
3265 | WRITE32(0); | |
1da177e4 LT |
3266 | WRITE32(0); |
3267 | WRITE32(0); | |
3268 | } | |
3269 | else { | |
18032ca0 | 3270 | WRITE32(3); |
1da177e4 LT |
3271 | WRITE32(setattr->sa_bmval[0]); |
3272 | WRITE32(setattr->sa_bmval[1]); | |
18032ca0 | 3273 | WRITE32(setattr->sa_bmval[2]); |
1da177e4 LT |
3274 | } |
3275 | ADJUST_ARGS(); | |
695e12f8 | 3276 | return nfserr; |
1da177e4 LT |
3277 | } |
3278 | ||
695e12f8 | 3279 | static __be32 |
b37ad28b | 3280 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 3281 | { |
bc749ca4 | 3282 | __be32 *p; |
1da177e4 LT |
3283 | |
3284 | if (!nfserr) { | |
ab4684d1 | 3285 | RESERVE_SPACE(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 3286 | WRITEMEM(&scd->se_clientid, 8); |
ab4684d1 | 3287 | WRITEMEM(&scd->se_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
3288 | ADJUST_ARGS(); |
3289 | } | |
3290 | else if (nfserr == nfserr_clid_inuse) { | |
3291 | RESERVE_SPACE(8); | |
3292 | WRITE32(0); | |
3293 | WRITE32(0); | |
3294 | ADJUST_ARGS(); | |
3295 | } | |
695e12f8 | 3296 | return nfserr; |
1da177e4 LT |
3297 | } |
3298 | ||
695e12f8 | 3299 | static __be32 |
b37ad28b | 3300 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 3301 | { |
bc749ca4 | 3302 | __be32 *p; |
1da177e4 LT |
3303 | |
3304 | if (!nfserr) { | |
3305 | RESERVE_SPACE(16); | |
3306 | WRITE32(write->wr_bytes_written); | |
3307 | WRITE32(write->wr_how_written); | |
ab4684d1 | 3308 | WRITEMEM(write->wr_verifier.data, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
3309 | ADJUST_ARGS(); |
3310 | } | |
695e12f8 | 3311 | return nfserr; |
1da177e4 LT |
3312 | } |
3313 | ||
57266a6e BF |
3314 | static const u32 nfs4_minimal_spo_must_enforce[2] = { |
3315 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
3316 | 1 << (OP_EXCHANGE_ID - 32) | | |
3317 | 1 << (OP_CREATE_SESSION - 32) | | |
3318 | 1 << (OP_DESTROY_SESSION - 32) | | |
3319 | 1 << (OP_DESTROY_CLIENTID - 32) | |
3320 | }; | |
3321 | ||
2db134eb | 3322 | static __be32 |
57b7b43b | 3323 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3324 | struct nfsd4_exchange_id *exid) |
3325 | { | |
bc749ca4 | 3326 | __be32 *p; |
0733d213 AA |
3327 | char *major_id; |
3328 | char *server_scope; | |
3329 | int major_id_sz; | |
3330 | int server_scope_sz; | |
3331 | uint64_t minor_id = 0; | |
3332 | ||
3333 | if (nfserr) | |
3334 | return nfserr; | |
3335 | ||
3336 | major_id = utsname()->nodename; | |
3337 | major_id_sz = strlen(major_id); | |
3338 | server_scope = utsname()->nodename; | |
3339 | server_scope_sz = strlen(server_scope); | |
3340 | ||
3341 | RESERVE_SPACE( | |
3342 | 8 /* eir_clientid */ + | |
3343 | 4 /* eir_sequenceid */ + | |
3344 | 4 /* eir_flags */ + | |
a8bb84bc | 3345 | 4 /* spr_how */); |
0733d213 AA |
3346 | |
3347 | WRITEMEM(&exid->clientid, 8); | |
3348 | WRITE32(exid->seqid); | |
3349 | WRITE32(exid->flags); | |
3350 | ||
0733d213 | 3351 | WRITE32(exid->spa_how); |
a8bb84bc KM |
3352 | ADJUST_ARGS(); |
3353 | ||
57266a6e BF |
3354 | switch (exid->spa_how) { |
3355 | case SP4_NONE: | |
3356 | break; | |
3357 | case SP4_MACH_CRED: | |
a8bb84bc KM |
3358 | /* spo_must_enforce, spo_must_allow */ |
3359 | RESERVE_SPACE(16); | |
3360 | ||
57266a6e BF |
3361 | /* spo_must_enforce bitmap: */ |
3362 | WRITE32(2); | |
3363 | WRITE32(nfs4_minimal_spo_must_enforce[0]); | |
3364 | WRITE32(nfs4_minimal_spo_must_enforce[1]); | |
3365 | /* empty spo_must_allow bitmap: */ | |
3366 | WRITE32(0); | |
a8bb84bc KM |
3367 | |
3368 | ADJUST_ARGS(); | |
57266a6e BF |
3369 | break; |
3370 | default: | |
3371 | WARN_ON_ONCE(1); | |
3372 | } | |
0733d213 | 3373 | |
a8bb84bc KM |
3374 | RESERVE_SPACE( |
3375 | 8 /* so_minor_id */ + | |
3376 | 4 /* so_major_id.len */ + | |
3377 | (XDR_QUADLEN(major_id_sz) * 4) + | |
3378 | 4 /* eir_server_scope.len */ + | |
3379 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
3380 | 4 /* eir_server_impl_id.count (0) */); | |
3381 | ||
0733d213 AA |
3382 | /* The server_owner struct */ |
3383 | WRITE64(minor_id); /* Minor id */ | |
3384 | /* major id */ | |
3385 | WRITE32(major_id_sz); | |
3386 | WRITEMEM(major_id, major_id_sz); | |
3387 | ||
3388 | /* Server scope */ | |
3389 | WRITE32(server_scope_sz); | |
3390 | WRITEMEM(server_scope, server_scope_sz); | |
3391 | ||
3392 | /* Implementation id */ | |
3393 | WRITE32(0); /* zero length nfs_impl_id4 array */ | |
3394 | ADJUST_ARGS(); | |
3395 | return 0; | |
2db134eb AA |
3396 | } |
3397 | ||
3398 | static __be32 | |
57b7b43b | 3399 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3400 | struct nfsd4_create_session *sess) |
3401 | { | |
bc749ca4 | 3402 | __be32 *p; |
ec6b5d7b AA |
3403 | |
3404 | if (nfserr) | |
3405 | return nfserr; | |
3406 | ||
3407 | RESERVE_SPACE(24); | |
3408 | WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3409 | WRITE32(sess->seqid); | |
3410 | WRITE32(sess->flags); | |
3411 | ADJUST_ARGS(); | |
3412 | ||
3413 | RESERVE_SPACE(28); | |
3414 | WRITE32(0); /* headerpadsz */ | |
3415 | WRITE32(sess->fore_channel.maxreq_sz); | |
3416 | WRITE32(sess->fore_channel.maxresp_sz); | |
3417 | WRITE32(sess->fore_channel.maxresp_cached); | |
3418 | WRITE32(sess->fore_channel.maxops); | |
3419 | WRITE32(sess->fore_channel.maxreqs); | |
3420 | WRITE32(sess->fore_channel.nr_rdma_attrs); | |
3421 | ADJUST_ARGS(); | |
3422 | ||
3423 | if (sess->fore_channel.nr_rdma_attrs) { | |
3424 | RESERVE_SPACE(4); | |
3425 | WRITE32(sess->fore_channel.rdma_attrs); | |
3426 | ADJUST_ARGS(); | |
3427 | } | |
3428 | ||
3429 | RESERVE_SPACE(28); | |
3430 | WRITE32(0); /* headerpadsz */ | |
3431 | WRITE32(sess->back_channel.maxreq_sz); | |
3432 | WRITE32(sess->back_channel.maxresp_sz); | |
3433 | WRITE32(sess->back_channel.maxresp_cached); | |
3434 | WRITE32(sess->back_channel.maxops); | |
3435 | WRITE32(sess->back_channel.maxreqs); | |
3436 | WRITE32(sess->back_channel.nr_rdma_attrs); | |
3437 | ADJUST_ARGS(); | |
3438 | ||
3439 | if (sess->back_channel.nr_rdma_attrs) { | |
3440 | RESERVE_SPACE(4); | |
3441 | WRITE32(sess->back_channel.rdma_attrs); | |
3442 | ADJUST_ARGS(); | |
3443 | } | |
3444 | return 0; | |
2db134eb AA |
3445 | } |
3446 | ||
c47d832b | 3447 | static __be32 |
57b7b43b | 3448 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3449 | struct nfsd4_sequence *seq) |
3450 | { | |
bc749ca4 | 3451 | __be32 *p; |
b85d4c01 BH |
3452 | |
3453 | if (nfserr) | |
3454 | return nfserr; | |
3455 | ||
3456 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20); | |
3457 | WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3458 | WRITE32(seq->seqid); | |
3459 | WRITE32(seq->slotid); | |
b7d7ca35 BF |
3460 | /* Note slotid's are numbered from zero: */ |
3461 | WRITE32(seq->maxslots - 1); /* sr_highest_slotid */ | |
3462 | WRITE32(seq->maxslots - 1); /* sr_target_highest_slotid */ | |
0d7bb719 | 3463 | WRITE32(seq->status_flags); |
b85d4c01 BH |
3464 | |
3465 | ADJUST_ARGS(); | |
557ce264 | 3466 | resp->cstate.datap = p; /* DRC cache data pointer */ |
b85d4c01 | 3467 | return 0; |
2db134eb AA |
3468 | } |
3469 | ||
2355c596 | 3470 | static __be32 |
57b7b43b | 3471 | nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
17456804 BS |
3472 | struct nfsd4_test_stateid *test_stateid) |
3473 | { | |
03cfb420 | 3474 | struct nfsd4_test_stateid_id *stateid, *next; |
17456804 | 3475 | __be32 *p; |
17456804 | 3476 | |
a11fcce1 BF |
3477 | if (nfserr) |
3478 | return nfserr; | |
3479 | ||
03cfb420 | 3480 | RESERVE_SPACE(4 + (4 * test_stateid->ts_num_ids)); |
17456804 | 3481 | *p++ = htonl(test_stateid->ts_num_ids); |
17456804 | 3482 | |
03cfb420 | 3483 | list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) { |
02f5fde5 | 3484 | *p++ = stateid->ts_id_status; |
17456804 | 3485 | } |
17456804 | 3486 | |
03cfb420 | 3487 | ADJUST_ARGS(); |
17456804 BS |
3488 | return nfserr; |
3489 | } | |
3490 | ||
695e12f8 BH |
3491 | static __be32 |
3492 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
3493 | { | |
3494 | return nfserr; | |
3495 | } | |
3496 | ||
3497 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
3498 | ||
2db134eb AA |
3499 | /* |
3500 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
3501 | * since we don't need to filter out obsolete ops as this is | |
3502 | * done in the decoding phase. | |
3503 | */ | |
695e12f8 | 3504 | static nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
3505 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
3506 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
3507 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
3508 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
3509 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
3510 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
3511 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
3512 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
3513 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
3514 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
3515 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
3516 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
3517 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
3518 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
3519 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3520 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 3521 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
3522 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
3523 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
3524 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3525 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3526 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3527 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
3528 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
3529 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
3530 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
3531 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
3532 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
3533 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3534 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3535 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
3536 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
3537 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
3538 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
3539 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3540 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
3541 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3542 | |
3543 | /* NFSv4.1 operations */ | |
3544 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
1d1bc8f2 | 3545 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
2db134eb AA |
3546 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
3547 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
43212cc7 KM |
3548 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_noop, |
3549 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3550 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3551 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, | |
3552 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
3553 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
3554 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
3555 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
22b6dee8 | 3556 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
2db134eb AA |
3557 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
3558 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
17456804 | 3559 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, |
2db134eb AA |
3560 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3561 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
3562 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
695e12f8 BH |
3563 | }; |
3564 | ||
496c262c AA |
3565 | /* |
3566 | * Calculate the total amount of memory that the compound response has taken | |
58e7b33a | 3567 | * after encoding the current operation with pad. |
496c262c | 3568 | * |
58e7b33a MJ |
3569 | * pad: if operation is non-idempotent, pad was calculate by op_rsize_bop() |
3570 | * which was specified at nfsd4_operation, else pad is zero. | |
496c262c | 3571 | * |
58e7b33a | 3572 | * Compare this length to the session se_fmaxresp_sz and se_fmaxresp_cached. |
496c262c AA |
3573 | * |
3574 | * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so | |
3575 | * will be at least a page and will therefore hold the xdr_buf head. | |
3576 | */ | |
57b7b43b | 3577 | __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad) |
496c262c | 3578 | { |
496c262c | 3579 | struct xdr_buf *xb = &resp->rqstp->rq_res; |
496c262c AA |
3580 | struct nfsd4_session *session = NULL; |
3581 | struct nfsd4_slot *slot = resp->cstate.slot; | |
58e7b33a | 3582 | u32 length, tlen = 0; |
496c262c AA |
3583 | |
3584 | if (!nfsd4_has_session(&resp->cstate)) | |
58e7b33a | 3585 | return 0; |
496c262c AA |
3586 | |
3587 | session = resp->cstate.session; | |
496c262c AA |
3588 | |
3589 | if (xb->page_len == 0) { | |
3590 | length = (char *)resp->p - (char *)xb->head[0].iov_base + pad; | |
3591 | } else { | |
3592 | if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0) | |
3593 | tlen = (char *)resp->p - (char *)xb->tail[0].iov_base; | |
3594 | ||
3595 | length = xb->head[0].iov_len + xb->page_len + tlen + pad; | |
3596 | } | |
3597 | dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__, | |
3598 | length, xb->page_len, tlen, pad); | |
3599 | ||
58e7b33a MJ |
3600 | if (length > session->se_fchannel.maxresp_sz) |
3601 | return nfserr_rep_too_big; | |
3602 | ||
73e79482 | 3603 | if ((slot->sl_flags & NFSD4_SLOT_CACHETHIS) && |
58e7b33a | 3604 | length > session->se_fchannel.maxresp_cached) |
496c262c | 3605 | return nfserr_rep_too_big_to_cache; |
58e7b33a MJ |
3606 | |
3607 | return 0; | |
496c262c AA |
3608 | } |
3609 | ||
1da177e4 LT |
3610 | void |
3611 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3612 | { | |
9411b1d4 | 3613 | struct nfs4_stateowner *so = resp->cstate.replay_owner; |
2ebbc012 | 3614 | __be32 *statp; |
bc749ca4 | 3615 | __be32 *p; |
1da177e4 LT |
3616 | |
3617 | RESERVE_SPACE(8); | |
3618 | WRITE32(op->opnum); | |
3619 | statp = p++; /* to be backfilled at the end */ | |
3620 | ADJUST_ARGS(); | |
3621 | ||
695e12f8 BH |
3622 | if (op->opnum == OP_ILLEGAL) |
3623 | goto status; | |
3624 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || | |
3625 | !nfsd4_enc_ops[op->opnum]); | |
3626 | op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u); | |
067e1ace | 3627 | /* nfsd4_check_resp_size guarantees enough room for error status */ |
58e7b33a MJ |
3628 | if (!op->status) |
3629 | op->status = nfsd4_check_resp_size(resp, 0); | |
9411b1d4 BF |
3630 | if (so) { |
3631 | so->so_replay.rp_status = op->status; | |
3632 | so->so_replay.rp_buflen = (char *)resp->p - (char *)(statp+1); | |
3633 | memcpy(so->so_replay.rp_buf, statp+1, so->so_replay.rp_buflen); | |
3634 | } | |
695e12f8 | 3635 | status: |
1da177e4 LT |
3636 | /* |
3637 | * Note: We write the status directly, instead of using WRITE32(), | |
3638 | * since it is already in network byte order. | |
3639 | */ | |
3640 | *statp = op->status; | |
3641 | } | |
3642 | ||
3643 | /* | |
3644 | * Encode the reply stored in the stateowner reply cache | |
3645 | * | |
3646 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
3647 | * previously sent already encoded operation. | |
3648 | * | |
3649 | * called with nfs4_lock_state() held | |
3650 | */ | |
3651 | void | |
3652 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3653 | { | |
bc749ca4 | 3654 | __be32 *p; |
1da177e4 LT |
3655 | struct nfs4_replay *rp = op->replay; |
3656 | ||
3657 | BUG_ON(!rp); | |
3658 | ||
3659 | RESERVE_SPACE(8); | |
3660 | WRITE32(op->opnum); | |
3661 | *p++ = rp->rp_status; /* already xdr'ed */ | |
3662 | ADJUST_ARGS(); | |
3663 | ||
3664 | RESERVE_SPACE(rp->rp_buflen); | |
3665 | WRITEMEM(rp->rp_buf, rp->rp_buflen); | |
3666 | ADJUST_ARGS(); | |
3667 | } | |
3668 | ||
1da177e4 | 3669 | int |
2ebbc012 | 3670 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
3671 | { |
3672 | return xdr_ressize_check(rqstp, p); | |
3673 | } | |
3674 | ||
3e98abff | 3675 | int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp) |
1da177e4 | 3676 | { |
3e98abff BF |
3677 | struct svc_rqst *rqstp = rq; |
3678 | struct nfsd4_compoundargs *args = rqstp->rq_argp; | |
3679 | ||
1da177e4 LT |
3680 | if (args->ops != args->iops) { |
3681 | kfree(args->ops); | |
3682 | args->ops = args->iops; | |
3683 | } | |
f99d49ad JJ |
3684 | kfree(args->tmpp); |
3685 | args->tmpp = NULL; | |
1da177e4 LT |
3686 | while (args->to_free) { |
3687 | struct tmpbuf *tb = args->to_free; | |
3688 | args->to_free = tb->next; | |
3689 | tb->release(tb->buf); | |
3690 | kfree(tb); | |
3691 | } | |
3e98abff | 3692 | return 1; |
1da177e4 LT |
3693 | } |
3694 | ||
3695 | int | |
2ebbc012 | 3696 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 3697 | { |
e874f9f8 JL |
3698 | if (rqstp->rq_arg.head[0].iov_len % 4) { |
3699 | /* client is nuts */ | |
3700 | dprintk("%s: compound not properly padded! (peeraddr=%pISc xid=0x%x)", | |
3701 | __func__, svc_addr(rqstp), be32_to_cpu(rqstp->rq_xid)); | |
3702 | return 0; | |
3703 | } | |
1da177e4 LT |
3704 | args->p = p; |
3705 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
3706 | args->pagelist = rqstp->rq_arg.pages; | |
3707 | args->pagelen = rqstp->rq_arg.page_len; | |
3708 | args->tmpp = NULL; | |
3709 | args->to_free = NULL; | |
3710 | args->ops = args->iops; | |
3711 | args->rqstp = rqstp; | |
3712 | ||
3e98abff | 3713 | return !nfsd4_decode_compound(args); |
1da177e4 LT |
3714 | } |
3715 | ||
3716 | int | |
2ebbc012 | 3717 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
3718 | { |
3719 | /* | |
3720 | * All that remains is to write the tag and operation count... | |
3721 | */ | |
557ce264 | 3722 | struct nfsd4_compound_state *cs = &resp->cstate; |
1da177e4 LT |
3723 | struct kvec *iov; |
3724 | p = resp->tagp; | |
3725 | *p++ = htonl(resp->taglen); | |
3726 | memcpy(p, resp->tag, resp->taglen); | |
3727 | p += XDR_QUADLEN(resp->taglen); | |
3728 | *p++ = htonl(resp->opcnt); | |
3729 | ||
3730 | if (rqstp->rq_res.page_len) | |
3731 | iov = &rqstp->rq_res.tail[0]; | |
3732 | else | |
3733 | iov = &rqstp->rq_res.head[0]; | |
3734 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; | |
3735 | BUG_ON(iov->iov_len > PAGE_SIZE); | |
26c0c75e | 3736 | if (nfsd4_has_session(cs)) { |
f0f51f5c BF |
3737 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
3738 | struct nfs4_client *clp = cs->session->se_client; | |
26c0c75e BF |
3739 | if (cs->status != nfserr_replay_cache) { |
3740 | nfsd4_store_cache_entry(resp); | |
73e79482 | 3741 | cs->slot->sl_flags &= ~NFSD4_SLOT_INUSE; |
26c0c75e | 3742 | } |
d7682988 | 3743 | /* Renew the clientid on success and on replay */ |
f0f51f5c | 3744 | spin_lock(&nn->client_lock); |
221a6876 | 3745 | nfsd4_put_session(cs->session); |
f0f51f5c BF |
3746 | spin_unlock(&nn->client_lock); |
3747 | put_client_renew(clp); | |
da3846a2 | 3748 | } |
1da177e4 LT |
3749 | return 1; |
3750 | } | |
3751 | ||
3752 | /* | |
3753 | * Local variables: | |
3754 | * c-basic-offset: 8 | |
3755 | * End: | |
3756 | */ |