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)); | |
3b299709 | 1036 | READ32(readdir->rd_dircount); |
1da177e4 LT |
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 | |
b37ad28b | 1608 | static __be32 |
1da177e4 LT |
1609 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1610 | { | |
1611 | DECODE_HEAD; | |
1612 | struct nfsd4_op *op; | |
1091006c | 1613 | bool cachethis = false; |
4f0cefbf | 1614 | int max_reply = 2 * RPC_MAX_AUTH_SIZE + 8; /* opcnt, status */ |
b0e35fda BF |
1615 | int readcount = 0; |
1616 | int readbytes = 0; | |
1da177e4 LT |
1617 | int i; |
1618 | ||
1da177e4 LT |
1619 | READ_BUF(4); |
1620 | READ32(argp->taglen); | |
1621 | READ_BUF(argp->taglen + 8); | |
1622 | SAVEMEM(argp->tag, argp->taglen); | |
1623 | READ32(argp->minorversion); | |
1624 | READ32(argp->opcnt); | |
4f0cefbf | 1625 | max_reply += 4 + (XDR_QUADLEN(argp->taglen) << 2); |
1da177e4 LT |
1626 | |
1627 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1628 | goto xdr_error; | |
1629 | if (argp->opcnt > 100) | |
1630 | goto xdr_error; | |
1631 | ||
e8c96f8c | 1632 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
1da177e4 LT |
1633 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1634 | if (!argp->ops) { | |
1635 | argp->ops = argp->iops; | |
817cb9d4 | 1636 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1637 | goto xdr_error; |
1638 | } | |
1639 | } | |
1640 | ||
e1a90ebd | 1641 | if (argp->minorversion > NFSD_SUPPORTED_MINOR_VERSION) |
30cff1ff BH |
1642 | argp->opcnt = 0; |
1643 | ||
1da177e4 LT |
1644 | for (i = 0; i < argp->opcnt; i++) { |
1645 | op = &argp->ops[i]; | |
1646 | op->replay = NULL; | |
1647 | ||
8a61b18c BF |
1648 | READ_BUF(4); |
1649 | READ32(op->opnum); | |
1da177e4 | 1650 | |
e1a90ebd AS |
1651 | if (nfsd4_opnum_in_range(argp, op)) |
1652 | op->status = nfsd4_dec_ops[op->opnum](argp, &op->u); | |
347e0ad9 | 1653 | else { |
1da177e4 LT |
1654 | op->opnum = OP_ILLEGAL; |
1655 | op->status = nfserr_op_illegal; | |
1da177e4 | 1656 | } |
1091006c BF |
1657 | /* |
1658 | * We'll try to cache the result in the DRC if any one | |
1659 | * op in the compound wants to be cached: | |
1660 | */ | |
1661 | cachethis |= nfsd4_cache_this_op(op); | |
6ff40dec | 1662 | |
b0e35fda BF |
1663 | if (op->opnum == OP_READ) { |
1664 | readcount++; | |
1665 | readbytes += nfsd4_max_reply(argp->rqstp, op); | |
1666 | } else | |
1667 | max_reply += nfsd4_max_reply(argp->rqstp, op); | |
e372ba60 BF |
1668 | |
1669 | if (op->status) { | |
1670 | argp->opcnt = i+1; | |
1671 | break; | |
1672 | } | |
1da177e4 | 1673 | } |
1091006c BF |
1674 | /* Sessions make the DRC unnecessary: */ |
1675 | if (argp->minorversion) | |
1676 | cachethis = false; | |
b0e35fda | 1677 | svc_reserve(argp->rqstp, max_reply + readbytes); |
1091006c | 1678 | argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; |
1da177e4 | 1679 | |
b0e35fda BF |
1680 | if (readcount > 1 || max_reply > PAGE_SIZE - 2*RPC_MAX_AUTH_SIZE) |
1681 | argp->rqstp->rq_splice_ok = false; | |
1682 | ||
1da177e4 LT |
1683 | DECODE_TAIL; |
1684 | } | |
1da177e4 | 1685 | |
1da177e4 LT |
1686 | #define WRITE32(n) *p++ = htonl(n) |
1687 | #define WRITE64(n) do { \ | |
1688 | *p++ = htonl((u32)((n) >> 32)); \ | |
1689 | *p++ = htonl((u32)(n)); \ | |
1690 | } while (0) | |
5108b276 | 1691 | #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \ |
1da177e4 LT |
1692 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ |
1693 | memcpy(p, ptr, nbytes); \ | |
1694 | p += XDR_QUADLEN(nbytes); \ | |
5108b276 | 1695 | }} while (0) |
c654b8a9 BF |
1696 | |
1697 | static void write32(__be32 **p, u32 n) | |
1698 | { | |
45eaa1c1 | 1699 | *(*p)++ = htonl(n); |
c654b8a9 BF |
1700 | } |
1701 | ||
1702 | static void write64(__be32 **p, u64 n) | |
1703 | { | |
45eaa1c1 | 1704 | write32(p, (n >> 32)); |
c654b8a9 BF |
1705 | write32(p, (u32)n); |
1706 | } | |
1707 | ||
1708 | static void write_change(__be32 **p, struct kstat *stat, struct inode *inode) | |
1709 | { | |
1710 | if (IS_I_VERSION(inode)) { | |
1711 | write64(p, inode->i_version); | |
1712 | } else { | |
1713 | write32(p, stat->ctime.tv_sec); | |
1714 | write32(p, stat->ctime.tv_nsec); | |
1715 | } | |
1716 | } | |
1717 | ||
1718 | static void write_cinfo(__be32 **p, struct nfsd4_change_info *c) | |
1719 | { | |
1720 | write32(p, c->atomic); | |
1721 | if (c->change_supported) { | |
1722 | write64(p, c->before_change); | |
1723 | write64(p, c->after_change); | |
1724 | } else { | |
1725 | write32(p, c->before_ctime_sec); | |
1726 | write32(p, c->before_ctime_nsec); | |
1727 | write32(p, c->after_ctime_sec); | |
1728 | write32(p, c->after_ctime_nsec); | |
1729 | } | |
1730 | } | |
1da177e4 | 1731 | |
81c3f413 | 1732 | /* Encode as an array of strings the string given with components |
e7a0444a | 1733 | * separated @sep, escaped with esc_enter and esc_exit. |
81c3f413 | 1734 | */ |
ddd1ea56 BF |
1735 | static __be32 nfsd4_encode_components_esc(struct xdr_stream *xdr, char sep, |
1736 | char *components, char esc_enter, | |
1737 | char esc_exit) | |
81c3f413 | 1738 | { |
ddd1ea56 | 1739 | __be32 *p; |
082d4bd7 BF |
1740 | __be32 pathlen; |
1741 | int pathlen_offset; | |
81c3f413 | 1742 | int strlen, count=0; |
e7a0444a | 1743 | char *str, *end, *next; |
81c3f413 BF |
1744 | |
1745 | dprintk("nfsd4_encode_components(%s)\n", components); | |
082d4bd7 BF |
1746 | |
1747 | pathlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
1748 | p = xdr_reserve_space(xdr, 4); |
1749 | if (!p) | |
81c3f413 | 1750 | return nfserr_resource; |
082d4bd7 BF |
1751 | p++; /* We will fill this in with @count later */ |
1752 | ||
81c3f413 BF |
1753 | end = str = components; |
1754 | while (*end) { | |
e7a0444a WAA |
1755 | bool found_esc = false; |
1756 | ||
1757 | /* try to parse as esc_start, ..., esc_end, sep */ | |
1758 | if (*str == esc_enter) { | |
1759 | for (; *end && (*end != esc_exit); end++) | |
1760 | /* find esc_exit or end of string */; | |
1761 | next = end + 1; | |
1762 | if (*end && (!*next || *next == sep)) { | |
1763 | str++; | |
1764 | found_esc = true; | |
1765 | } | |
1766 | } | |
1767 | ||
1768 | if (!found_esc) | |
1769 | for (; *end && (*end != sep); end++) | |
1770 | /* find sep or end of string */; | |
1771 | ||
81c3f413 BF |
1772 | strlen = end - str; |
1773 | if (strlen) { | |
ddd1ea56 BF |
1774 | p = xdr_reserve_space(xdr, strlen + 4); |
1775 | if (!p) | |
81c3f413 BF |
1776 | return nfserr_resource; |
1777 | WRITE32(strlen); | |
1778 | WRITEMEM(str, strlen); | |
1779 | count++; | |
1780 | } | |
1781 | else | |
1782 | end++; | |
1783 | str = end; | |
1784 | } | |
082d4bd7 BF |
1785 | pathlen = htonl(xdr->buf->len - pathlen_offset); |
1786 | write_bytes_to_xdr_buf(xdr->buf, pathlen_offset, &pathlen, 4); | |
81c3f413 BF |
1787 | return 0; |
1788 | } | |
1789 | ||
e7a0444a WAA |
1790 | /* Encode as an array of strings the string given with components |
1791 | * separated @sep. | |
1792 | */ | |
ddd1ea56 BF |
1793 | static __be32 nfsd4_encode_components(struct xdr_stream *xdr, char sep, |
1794 | char *components) | |
e7a0444a | 1795 | { |
ddd1ea56 | 1796 | return nfsd4_encode_components_esc(xdr, sep, components, 0, 0); |
e7a0444a WAA |
1797 | } |
1798 | ||
81c3f413 BF |
1799 | /* |
1800 | * encode a location element of a fs_locations structure | |
1801 | */ | |
ddd1ea56 BF |
1802 | static __be32 nfsd4_encode_fs_location4(struct xdr_stream *xdr, |
1803 | struct nfsd4_fs_location *location) | |
81c3f413 | 1804 | { |
b37ad28b | 1805 | __be32 status; |
81c3f413 | 1806 | |
ddd1ea56 | 1807 | status = nfsd4_encode_components_esc(xdr, ':', location->hosts, |
e7a0444a | 1808 | '[', ']'); |
81c3f413 BF |
1809 | if (status) |
1810 | return status; | |
ddd1ea56 | 1811 | status = nfsd4_encode_components(xdr, '/', location->path); |
81c3f413 BF |
1812 | if (status) |
1813 | return status; | |
81c3f413 BF |
1814 | return 0; |
1815 | } | |
1816 | ||
1817 | /* | |
ed748aac | 1818 | * Encode a path in RFC3530 'pathname4' format |
81c3f413 | 1819 | */ |
ddd1ea56 BF |
1820 | static __be32 nfsd4_encode_path(struct xdr_stream *xdr, |
1821 | const struct path *root, | |
1822 | const struct path *path) | |
81c3f413 | 1823 | { |
301f0268 | 1824 | struct path cur = *path; |
ddd1ea56 | 1825 | __be32 *p; |
ed748aac TM |
1826 | struct dentry **components = NULL; |
1827 | unsigned int ncomponents = 0; | |
1828 | __be32 err = nfserr_jukebox; | |
81c3f413 | 1829 | |
ed748aac | 1830 | dprintk("nfsd4_encode_components("); |
81c3f413 | 1831 | |
ed748aac TM |
1832 | path_get(&cur); |
1833 | /* First walk the path up to the nfsd root, and store the | |
1834 | * dentries/path components in an array. | |
1835 | */ | |
1836 | for (;;) { | |
1837 | if (cur.dentry == root->dentry && cur.mnt == root->mnt) | |
1838 | break; | |
1839 | if (cur.dentry == cur.mnt->mnt_root) { | |
1840 | if (follow_up(&cur)) | |
1841 | continue; | |
1842 | goto out_free; | |
1843 | } | |
1844 | if ((ncomponents & 15) == 0) { | |
1845 | struct dentry **new; | |
1846 | new = krealloc(components, | |
1847 | sizeof(*new) * (ncomponents + 16), | |
1848 | GFP_KERNEL); | |
1849 | if (!new) | |
1850 | goto out_free; | |
1851 | components = new; | |
1852 | } | |
1853 | components[ncomponents++] = cur.dentry; | |
1854 | cur.dentry = dget_parent(cur.dentry); | |
1855 | } | |
ddd1ea56 BF |
1856 | err = nfserr_resource; |
1857 | p = xdr_reserve_space(xdr, 4); | |
1858 | if (!p) | |
ed748aac TM |
1859 | goto out_free; |
1860 | WRITE32(ncomponents); | |
1861 | ||
1862 | while (ncomponents) { | |
1863 | struct dentry *dentry = components[ncomponents - 1]; | |
301f0268 | 1864 | unsigned int len; |
ed748aac | 1865 | |
301f0268 AV |
1866 | spin_lock(&dentry->d_lock); |
1867 | len = dentry->d_name.len; | |
ddd1ea56 BF |
1868 | p = xdr_reserve_space(xdr, len + 4); |
1869 | if (!p) { | |
301f0268 | 1870 | spin_unlock(&dentry->d_lock); |
ed748aac | 1871 | goto out_free; |
301f0268 | 1872 | } |
ed748aac TM |
1873 | WRITE32(len); |
1874 | WRITEMEM(dentry->d_name.name, len); | |
1875 | dprintk("/%s", dentry->d_name.name); | |
301f0268 | 1876 | spin_unlock(&dentry->d_lock); |
ed748aac TM |
1877 | dput(dentry); |
1878 | ncomponents--; | |
81c3f413 | 1879 | } |
ed748aac | 1880 | |
ed748aac TM |
1881 | err = 0; |
1882 | out_free: | |
1883 | dprintk(")\n"); | |
1884 | while (ncomponents) | |
1885 | dput(components[--ncomponents]); | |
1886 | kfree(components); | |
1887 | path_put(&cur); | |
1888 | return err; | |
1889 | } | |
1890 | ||
ddd1ea56 BF |
1891 | static __be32 nfsd4_encode_fsloc_fsroot(struct xdr_stream *xdr, |
1892 | struct svc_rqst *rqstp, const struct path *path) | |
ed748aac TM |
1893 | { |
1894 | struct svc_export *exp_ps; | |
1895 | __be32 res; | |
1896 | ||
1897 | exp_ps = rqst_find_fsidzero_export(rqstp); | |
1898 | if (IS_ERR(exp_ps)) | |
1899 | return nfserrno(PTR_ERR(exp_ps)); | |
ddd1ea56 | 1900 | res = nfsd4_encode_path(xdr, &exp_ps->ex_path, path); |
ed748aac TM |
1901 | exp_put(exp_ps); |
1902 | return res; | |
81c3f413 BF |
1903 | } |
1904 | ||
1905 | /* | |
1906 | * encode a fs_locations structure | |
1907 | */ | |
ddd1ea56 BF |
1908 | static __be32 nfsd4_encode_fs_locations(struct xdr_stream *xdr, |
1909 | struct svc_rqst *rqstp, struct svc_export *exp) | |
81c3f413 | 1910 | { |
b37ad28b | 1911 | __be32 status; |
cc45f017 | 1912 | int i; |
ddd1ea56 | 1913 | __be32 *p; |
81c3f413 | 1914 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
81c3f413 | 1915 | |
ddd1ea56 | 1916 | status = nfsd4_encode_fsloc_fsroot(xdr, rqstp, &exp->ex_path); |
81c3f413 BF |
1917 | if (status) |
1918 | return status; | |
ddd1ea56 BF |
1919 | p = xdr_reserve_space(xdr, 4); |
1920 | if (!p) | |
81c3f413 BF |
1921 | return nfserr_resource; |
1922 | WRITE32(fslocs->locations_count); | |
1923 | for (i=0; i<fslocs->locations_count; i++) { | |
ddd1ea56 | 1924 | status = nfsd4_encode_fs_location4(xdr, &fslocs->locations[i]); |
81c3f413 BF |
1925 | if (status) |
1926 | return status; | |
1927 | } | |
81c3f413 BF |
1928 | return 0; |
1929 | } | |
1da177e4 | 1930 | |
3d2544b1 BF |
1931 | static u32 nfs4_file_type(umode_t mode) |
1932 | { | |
1933 | switch (mode & S_IFMT) { | |
1934 | case S_IFIFO: return NF4FIFO; | |
1935 | case S_IFCHR: return NF4CHR; | |
1936 | case S_IFDIR: return NF4DIR; | |
1937 | case S_IFBLK: return NF4BLK; | |
1938 | case S_IFLNK: return NF4LNK; | |
1939 | case S_IFREG: return NF4REG; | |
1940 | case S_IFSOCK: return NF4SOCK; | |
1941 | default: return NF4BAD; | |
1942 | }; | |
1943 | } | |
1da177e4 | 1944 | |
b37ad28b | 1945 | static inline __be32 |
ddd1ea56 BF |
1946 | nfsd4_encode_aclname(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
1947 | struct nfs4_ace *ace) | |
1da177e4 | 1948 | { |
3554116d | 1949 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ddd1ea56 | 1950 | return nfs4_acl_write_who(xdr, ace->whotype); |
3554116d | 1951 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
ddd1ea56 | 1952 | return nfsd4_encode_group(xdr, rqstp, ace->who_gid); |
3554116d | 1953 | else |
ddd1ea56 | 1954 | return nfsd4_encode_user(xdr, rqstp, ace->who_uid); |
1da177e4 LT |
1955 | } |
1956 | ||
42ca0993 BF |
1957 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
1958 | FATTR4_WORD0_RDATTR_ERROR) | |
1959 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
1960 | ||
18032ca0 DQ |
1961 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
1962 | static inline __be32 | |
ddd1ea56 BF |
1963 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
1964 | void *context, int len) | |
18032ca0 | 1965 | { |
ddd1ea56 | 1966 | __be32 *p; |
18032ca0 | 1967 | |
ddd1ea56 BF |
1968 | p = xdr_reserve_space(xdr, len + 4 + 4 + 4); |
1969 | if (!p) | |
18032ca0 DQ |
1970 | return nfserr_resource; |
1971 | ||
1972 | /* | |
1973 | * For now we use a 0 here to indicate the null translation; in | |
1974 | * the future we may place a call to translation code here. | |
1975 | */ | |
18032ca0 DQ |
1976 | WRITE32(0); /* lfs */ |
1977 | WRITE32(0); /* pi */ | |
1978 | p = xdr_encode_opaque(p, context, len); | |
18032ca0 DQ |
1979 | return 0; |
1980 | } | |
1981 | #else | |
1982 | static inline __be32 | |
ddd1ea56 BF |
1983 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
1984 | void *context, int len) | |
18032ca0 DQ |
1985 | { return 0; } |
1986 | #endif | |
1987 | ||
b37ad28b | 1988 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
42ca0993 BF |
1989 | { |
1990 | /* As per referral draft: */ | |
1991 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
1992 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
1993 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
1994 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
1995 | *rdattr_err = NFSERR_MOVED; | |
1996 | else | |
1997 | return nfserr_moved; | |
1998 | } | |
1999 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
2000 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
2001 | return 0; | |
2002 | } | |
1da177e4 | 2003 | |
ae7095a7 BF |
2004 | |
2005 | static int get_parent_attributes(struct svc_export *exp, struct kstat *stat) | |
2006 | { | |
2007 | struct path path = exp->ex_path; | |
2008 | int err; | |
2009 | ||
2010 | path_get(&path); | |
2011 | while (follow_up(&path)) { | |
2012 | if (path.dentry != path.mnt->mnt_root) | |
2013 | break; | |
2014 | } | |
3dadecce | 2015 | err = vfs_getattr(&path, stat); |
ae7095a7 BF |
2016 | path_put(&path); |
2017 | return err; | |
2018 | } | |
2019 | ||
1da177e4 LT |
2020 | /* |
2021 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
2022 | * ourselves. | |
1da177e4 | 2023 | */ |
b37ad28b | 2024 | __be32 |
d5184658 BF |
2025 | nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp, |
2026 | struct svc_export *exp, | |
2027 | struct dentry *dentry, u32 *bmval, | |
406a7ea9 | 2028 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
2029 | { |
2030 | u32 bmval0 = bmval[0]; | |
2031 | u32 bmval1 = bmval[1]; | |
7e705706 | 2032 | u32 bmval2 = bmval[2]; |
1da177e4 | 2033 | struct kstat stat; |
d50e6136 | 2034 | struct svc_fh *tempfh = NULL; |
1da177e4 | 2035 | struct kstatfs statfs; |
ddd1ea56 | 2036 | __be32 *p; |
1fcea5b2 | 2037 | int starting_len = xdr->buf->len; |
082d4bd7 BF |
2038 | int attrlen_offset; |
2039 | __be32 attrlen; | |
1da177e4 LT |
2040 | u32 dummy; |
2041 | u64 dummy64; | |
42ca0993 | 2042 | u32 rdattr_err = 0; |
b37ad28b | 2043 | __be32 status; |
b8dd7b9a | 2044 | int err; |
1da177e4 LT |
2045 | int aclsupport = 0; |
2046 | struct nfs4_acl *acl = NULL; | |
18032ca0 DQ |
2047 | void *context = NULL; |
2048 | int contextlen; | |
2049 | bool contextsupport = false; | |
7e705706 AA |
2050 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
2051 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
2052 | struct path path = { |
2053 | .mnt = exp->ex_path.mnt, | |
2054 | .dentry = dentry, | |
2055 | }; | |
3d733711 | 2056 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
1da177e4 LT |
2057 | |
2058 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
7e705706 AA |
2059 | BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); |
2060 | BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); | |
2061 | BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); | |
1da177e4 | 2062 | |
42ca0993 | 2063 | if (exp->ex_fslocs.migrated) { |
7e705706 | 2064 | BUG_ON(bmval[2]); |
42ca0993 BF |
2065 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); |
2066 | if (status) | |
2067 | goto out; | |
2068 | } | |
2069 | ||
3dadecce | 2070 | err = vfs_getattr(&path, &stat); |
b8dd7b9a | 2071 | if (err) |
1da177e4 | 2072 | goto out_nfserr; |
a16e92ed BF |
2073 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | |
2074 | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
2075 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
2076 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 2077 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 2078 | if (err) |
1da177e4 LT |
2079 | goto out_nfserr; |
2080 | } | |
2081 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
d50e6136 BF |
2082 | tempfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); |
2083 | status = nfserr_jukebox; | |
2084 | if (!tempfh) | |
2085 | goto out; | |
2086 | fh_init(tempfh, NFS4_FHSIZE); | |
2087 | status = fh_compose(tempfh, exp, dentry, NULL); | |
1da177e4 LT |
2088 | if (status) |
2089 | goto out; | |
d50e6136 | 2090 | fhp = tempfh; |
1da177e4 LT |
2091 | } |
2092 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
2093 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
b8dd7b9a AV |
2094 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
2095 | aclsupport = (err == 0); | |
1da177e4 | 2096 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 2097 | if (err == -EOPNOTSUPP) |
1da177e4 | 2098 | bmval0 &= ~FATTR4_WORD0_ACL; |
b8dd7b9a | 2099 | else if (err == -EINVAL) { |
1da177e4 LT |
2100 | status = nfserr_attrnotsupp; |
2101 | goto out; | |
b8dd7b9a | 2102 | } else if (err != 0) |
1da177e4 LT |
2103 | goto out_nfserr; |
2104 | } | |
2105 | } | |
1da177e4 | 2106 | |
18032ca0 DQ |
2107 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
2108 | if ((bmval[2] & FATTR4_WORD2_SECURITY_LABEL) || | |
2109 | bmval[0] & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
2110 | err = security_inode_getsecctx(dentry->d_inode, | |
2111 | &context, &contextlen); | |
2112 | contextsupport = (err == 0); | |
2113 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { | |
2114 | if (err == -EOPNOTSUPP) | |
2115 | bmval2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2116 | else if (err) | |
2117 | goto out_nfserr; | |
2118 | } | |
2119 | } | |
2120 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ | |
2121 | ||
2b44f1ba | 2122 | if (bmval2) { |
ddd1ea56 BF |
2123 | p = xdr_reserve_space(xdr, 16); |
2124 | if (!p) | |
2b44f1ba | 2125 | goto out_resource; |
7e705706 AA |
2126 | WRITE32(3); |
2127 | WRITE32(bmval0); | |
2128 | WRITE32(bmval1); | |
2129 | WRITE32(bmval2); | |
2b44f1ba | 2130 | } else if (bmval1) { |
ddd1ea56 BF |
2131 | p = xdr_reserve_space(xdr, 12); |
2132 | if (!p) | |
2b44f1ba | 2133 | goto out_resource; |
7e705706 AA |
2134 | WRITE32(2); |
2135 | WRITE32(bmval0); | |
2136 | WRITE32(bmval1); | |
2137 | } else { | |
ddd1ea56 BF |
2138 | p = xdr_reserve_space(xdr, 8); |
2139 | if (!p) | |
2b44f1ba | 2140 | goto out_resource; |
7e705706 AA |
2141 | WRITE32(1); |
2142 | WRITE32(bmval0); | |
2143 | } | |
082d4bd7 BF |
2144 | |
2145 | attrlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
2146 | p = xdr_reserve_space(xdr, 4); |
2147 | if (!p) | |
2148 | goto out_resource; | |
082d4bd7 | 2149 | p++; /* to be backfilled later */ |
1da177e4 LT |
2150 | |
2151 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
7e705706 AA |
2152 | u32 word0 = nfsd_suppattrs0(minorversion); |
2153 | u32 word1 = nfsd_suppattrs1(minorversion); | |
2154 | u32 word2 = nfsd_suppattrs2(minorversion); | |
2155 | ||
42ca0993 BF |
2156 | if (!aclsupport) |
2157 | word0 &= ~FATTR4_WORD0_ACL; | |
18032ca0 DQ |
2158 | if (!contextsupport) |
2159 | word2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
7e705706 | 2160 | if (!word2) { |
ddd1ea56 BF |
2161 | p = xdr_reserve_space(xdr, 12); |
2162 | if (!p) | |
2b44f1ba | 2163 | goto out_resource; |
7e705706 AA |
2164 | WRITE32(2); |
2165 | WRITE32(word0); | |
2166 | WRITE32(word1); | |
2167 | } else { | |
ddd1ea56 BF |
2168 | p = xdr_reserve_space(xdr, 16); |
2169 | if (!p) | |
2b44f1ba | 2170 | goto out_resource; |
7e705706 AA |
2171 | WRITE32(3); |
2172 | WRITE32(word0); | |
2173 | WRITE32(word1); | |
2174 | WRITE32(word2); | |
2175 | } | |
1da177e4 LT |
2176 | } |
2177 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
ddd1ea56 BF |
2178 | p = xdr_reserve_space(xdr, 4); |
2179 | if (!p) | |
1da177e4 | 2180 | goto out_resource; |
3d2544b1 | 2181 | dummy = nfs4_file_type(stat.mode); |
6b6d8137 BF |
2182 | if (dummy == NF4BAD) { |
2183 | status = nfserr_serverfault; | |
2184 | goto out; | |
2185 | } | |
1da177e4 LT |
2186 | WRITE32(dummy); |
2187 | } | |
2188 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
ddd1ea56 BF |
2189 | p = xdr_reserve_space(xdr, 4); |
2190 | if (!p) | |
1da177e4 | 2191 | goto out_resource; |
49640001 | 2192 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
e34ac862 | 2193 | WRITE32(NFS4_FH_PERSISTENT); |
49640001 | 2194 | else |
e34ac862 | 2195 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
1da177e4 LT |
2196 | } |
2197 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
ddd1ea56 BF |
2198 | p = xdr_reserve_space(xdr, 8); |
2199 | if (!p) | |
1da177e4 | 2200 | goto out_resource; |
c654b8a9 | 2201 | write_change(&p, &stat, dentry->d_inode); |
1da177e4 LT |
2202 | } |
2203 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
ddd1ea56 BF |
2204 | p = xdr_reserve_space(xdr, 8); |
2205 | if (!p) | |
1da177e4 LT |
2206 | goto out_resource; |
2207 | WRITE64(stat.size); | |
2208 | } | |
2209 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
ddd1ea56 BF |
2210 | p = xdr_reserve_space(xdr, 4); |
2211 | if (!p) | |
1da177e4 LT |
2212 | goto out_resource; |
2213 | WRITE32(1); | |
2214 | } | |
2215 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
ddd1ea56 BF |
2216 | p = xdr_reserve_space(xdr, 4); |
2217 | if (!p) | |
1da177e4 LT |
2218 | goto out_resource; |
2219 | WRITE32(1); | |
2220 | } | |
2221 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
ddd1ea56 BF |
2222 | p = xdr_reserve_space(xdr, 4); |
2223 | if (!p) | |
1da177e4 LT |
2224 | goto out_resource; |
2225 | WRITE32(0); | |
2226 | } | |
2227 | if (bmval0 & FATTR4_WORD0_FSID) { | |
ddd1ea56 BF |
2228 | p = xdr_reserve_space(xdr, 16); |
2229 | if (!p) | |
1da177e4 | 2230 | goto out_resource; |
42ca0993 BF |
2231 | if (exp->ex_fslocs.migrated) { |
2232 | WRITE64(NFS4_REFERRAL_FSID_MAJOR); | |
2233 | WRITE64(NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
2234 | } else switch(fsid_source(fhp)) { |
2235 | case FSIDSOURCE_FSID: | |
1da177e4 LT |
2236 | WRITE64((u64)exp->ex_fsid); |
2237 | WRITE64((u64)0); | |
af6a4e28 N |
2238 | break; |
2239 | case FSIDSOURCE_DEV: | |
1da177e4 LT |
2240 | WRITE32(0); |
2241 | WRITE32(MAJOR(stat.dev)); | |
2242 | WRITE32(0); | |
2243 | WRITE32(MINOR(stat.dev)); | |
af6a4e28 N |
2244 | break; |
2245 | case FSIDSOURCE_UUID: | |
2246 | WRITEMEM(exp->ex_uuid, 16); | |
2247 | break; | |
1da177e4 LT |
2248 | } |
2249 | } | |
2250 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
ddd1ea56 BF |
2251 | p = xdr_reserve_space(xdr, 4); |
2252 | if (!p) | |
1da177e4 LT |
2253 | goto out_resource; |
2254 | WRITE32(0); | |
2255 | } | |
2256 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
ddd1ea56 BF |
2257 | p = xdr_reserve_space(xdr, 4); |
2258 | if (!p) | |
1da177e4 | 2259 | goto out_resource; |
3d733711 | 2260 | WRITE32(nn->nfsd4_lease); |
1da177e4 LT |
2261 | } |
2262 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
ddd1ea56 BF |
2263 | p = xdr_reserve_space(xdr, 4); |
2264 | if (!p) | |
1da177e4 | 2265 | goto out_resource; |
42ca0993 | 2266 | WRITE32(rdattr_err); |
1da177e4 LT |
2267 | } |
2268 | if (bmval0 & FATTR4_WORD0_ACL) { | |
2269 | struct nfs4_ace *ace; | |
1da177e4 LT |
2270 | |
2271 | if (acl == NULL) { | |
ddd1ea56 BF |
2272 | p = xdr_reserve_space(xdr, 4); |
2273 | if (!p) | |
1da177e4 LT |
2274 | goto out_resource; |
2275 | ||
2276 | WRITE32(0); | |
2277 | goto out_acl; | |
2278 | } | |
ddd1ea56 BF |
2279 | p = xdr_reserve_space(xdr, 4); |
2280 | if (!p) | |
1da177e4 LT |
2281 | goto out_resource; |
2282 | WRITE32(acl->naces); | |
2283 | ||
28e05dd8 | 2284 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
ddd1ea56 BF |
2285 | p = xdr_reserve_space(xdr, 4*3); |
2286 | if (!p) | |
1da177e4 LT |
2287 | goto out_resource; |
2288 | WRITE32(ace->type); | |
2289 | WRITE32(ace->flag); | |
2290 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); | |
ddd1ea56 | 2291 | status = nfsd4_encode_aclname(xdr, rqstp, ace); |
1da177e4 LT |
2292 | if (status) |
2293 | goto out; | |
2294 | } | |
2295 | } | |
2296 | out_acl: | |
2297 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
ddd1ea56 BF |
2298 | p = xdr_reserve_space(xdr, 4); |
2299 | if (!p) | |
1da177e4 LT |
2300 | goto out_resource; |
2301 | WRITE32(aclsupport ? | |
2302 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); | |
2303 | } | |
2304 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
ddd1ea56 BF |
2305 | p = xdr_reserve_space(xdr, 4); |
2306 | if (!p) | |
1da177e4 LT |
2307 | goto out_resource; |
2308 | WRITE32(1); | |
2309 | } | |
2310 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
ddd1ea56 BF |
2311 | p = xdr_reserve_space(xdr, 4); |
2312 | if (!p) | |
1da177e4 | 2313 | goto out_resource; |
2930d381 | 2314 | WRITE32(0); |
1da177e4 LT |
2315 | } |
2316 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
ddd1ea56 BF |
2317 | p = xdr_reserve_space(xdr, 4); |
2318 | if (!p) | |
1da177e4 LT |
2319 | goto out_resource; |
2320 | WRITE32(1); | |
2321 | } | |
2322 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
ddd1ea56 BF |
2323 | p = xdr_reserve_space(xdr, 4); |
2324 | if (!p) | |
1da177e4 LT |
2325 | goto out_resource; |
2326 | WRITE32(1); | |
2327 | } | |
2328 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
ddd1ea56 BF |
2329 | p = xdr_reserve_space(xdr, fhp->fh_handle.fh_size + 4); |
2330 | if (!p) | |
1da177e4 LT |
2331 | goto out_resource; |
2332 | WRITE32(fhp->fh_handle.fh_size); | |
2333 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); | |
2334 | } | |
2335 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
ddd1ea56 BF |
2336 | p = xdr_reserve_space(xdr, 8); |
2337 | if (!p) | |
1da177e4 | 2338 | goto out_resource; |
40ee5dc6 | 2339 | WRITE64(stat.ino); |
1da177e4 LT |
2340 | } |
2341 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
ddd1ea56 BF |
2342 | p = xdr_reserve_space(xdr, 8); |
2343 | if (!p) | |
1da177e4 LT |
2344 | goto out_resource; |
2345 | WRITE64((u64) statfs.f_ffree); | |
2346 | } | |
2347 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
ddd1ea56 BF |
2348 | p = xdr_reserve_space(xdr, 8); |
2349 | if (!p) | |
1da177e4 LT |
2350 | goto out_resource; |
2351 | WRITE64((u64) statfs.f_ffree); | |
2352 | } | |
2353 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
ddd1ea56 BF |
2354 | p = xdr_reserve_space(xdr, 8); |
2355 | if (!p) | |
1da177e4 LT |
2356 | goto out_resource; |
2357 | WRITE64((u64) statfs.f_files); | |
2358 | } | |
81c3f413 | 2359 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
ddd1ea56 | 2360 | status = nfsd4_encode_fs_locations(xdr, rqstp, exp); |
81c3f413 BF |
2361 | if (status) |
2362 | goto out; | |
2363 | } | |
1da177e4 | 2364 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
ddd1ea56 BF |
2365 | p = xdr_reserve_space(xdr, 4); |
2366 | if (!p) | |
1da177e4 LT |
2367 | goto out_resource; |
2368 | WRITE32(1); | |
2369 | } | |
2370 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
ddd1ea56 BF |
2371 | p = xdr_reserve_space(xdr, 8); |
2372 | if (!p) | |
1da177e4 | 2373 | goto out_resource; |
aea240f4 | 2374 | WRITE64(exp->ex_path.mnt->mnt_sb->s_maxbytes); |
1da177e4 LT |
2375 | } |
2376 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
ddd1ea56 BF |
2377 | p = xdr_reserve_space(xdr, 4); |
2378 | if (!p) | |
1da177e4 LT |
2379 | goto out_resource; |
2380 | WRITE32(255); | |
2381 | } | |
2382 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
ddd1ea56 BF |
2383 | p = xdr_reserve_space(xdr, 4); |
2384 | if (!p) | |
1da177e4 | 2385 | goto out_resource; |
a16e92ed | 2386 | WRITE32(statfs.f_namelen); |
1da177e4 LT |
2387 | } |
2388 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
ddd1ea56 BF |
2389 | p = xdr_reserve_space(xdr, 8); |
2390 | if (!p) | |
1da177e4 | 2391 | goto out_resource; |
7adae489 | 2392 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2393 | } |
2394 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
ddd1ea56 BF |
2395 | p = xdr_reserve_space(xdr, 8); |
2396 | if (!p) | |
1da177e4 | 2397 | goto out_resource; |
7adae489 | 2398 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2399 | } |
2400 | if (bmval1 & FATTR4_WORD1_MODE) { | |
ddd1ea56 BF |
2401 | p = xdr_reserve_space(xdr, 4); |
2402 | if (!p) | |
1da177e4 LT |
2403 | goto out_resource; |
2404 | WRITE32(stat.mode & S_IALLUGO); | |
2405 | } | |
2406 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
ddd1ea56 BF |
2407 | p = xdr_reserve_space(xdr, 4); |
2408 | if (!p) | |
1da177e4 LT |
2409 | goto out_resource; |
2410 | WRITE32(1); | |
2411 | } | |
2412 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
ddd1ea56 BF |
2413 | p = xdr_reserve_space(xdr, 4); |
2414 | if (!p) | |
1da177e4 LT |
2415 | goto out_resource; |
2416 | WRITE32(stat.nlink); | |
2417 | } | |
2418 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
ddd1ea56 | 2419 | status = nfsd4_encode_user(xdr, rqstp, stat.uid); |
1da177e4 LT |
2420 | if (status) |
2421 | goto out; | |
2422 | } | |
2423 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
ddd1ea56 | 2424 | status = nfsd4_encode_group(xdr, rqstp, stat.gid); |
1da177e4 LT |
2425 | if (status) |
2426 | goto out; | |
2427 | } | |
2428 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
ddd1ea56 BF |
2429 | p = xdr_reserve_space(xdr, 8); |
2430 | if (!p) | |
1da177e4 LT |
2431 | goto out_resource; |
2432 | WRITE32((u32) MAJOR(stat.rdev)); | |
2433 | WRITE32((u32) MINOR(stat.rdev)); | |
2434 | } | |
2435 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
ddd1ea56 BF |
2436 | p = xdr_reserve_space(xdr, 8); |
2437 | if (!p) | |
1da177e4 LT |
2438 | goto out_resource; |
2439 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
2440 | WRITE64(dummy64); | |
2441 | } | |
2442 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
ddd1ea56 BF |
2443 | p = xdr_reserve_space(xdr, 8); |
2444 | if (!p) | |
1da177e4 LT |
2445 | goto out_resource; |
2446 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
2447 | WRITE64(dummy64); | |
2448 | } | |
2449 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
ddd1ea56 BF |
2450 | p = xdr_reserve_space(xdr, 8); |
2451 | if (!p) | |
1da177e4 LT |
2452 | goto out_resource; |
2453 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
2454 | WRITE64(dummy64); | |
2455 | } | |
2456 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
ddd1ea56 BF |
2457 | p = xdr_reserve_space(xdr, 8); |
2458 | if (!p) | |
1da177e4 LT |
2459 | goto out_resource; |
2460 | dummy64 = (u64)stat.blocks << 9; | |
2461 | WRITE64(dummy64); | |
2462 | } | |
2463 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
ddd1ea56 BF |
2464 | p = xdr_reserve_space(xdr, 12); |
2465 | if (!p) | |
1da177e4 | 2466 | goto out_resource; |
bf8d9097 | 2467 | WRITE64((s64)stat.atime.tv_sec); |
1da177e4 LT |
2468 | WRITE32(stat.atime.tv_nsec); |
2469 | } | |
2470 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
ddd1ea56 BF |
2471 | p = xdr_reserve_space(xdr, 12); |
2472 | if (!p) | |
1da177e4 LT |
2473 | goto out_resource; |
2474 | WRITE32(0); | |
2475 | WRITE32(1); | |
2476 | WRITE32(0); | |
2477 | } | |
2478 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
ddd1ea56 BF |
2479 | p = xdr_reserve_space(xdr, 12); |
2480 | if (!p) | |
1da177e4 | 2481 | goto out_resource; |
bf8d9097 | 2482 | WRITE64((s64)stat.ctime.tv_sec); |
1da177e4 LT |
2483 | WRITE32(stat.ctime.tv_nsec); |
2484 | } | |
2485 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
ddd1ea56 BF |
2486 | p = xdr_reserve_space(xdr, 12); |
2487 | if (!p) | |
1da177e4 | 2488 | goto out_resource; |
bf8d9097 | 2489 | WRITE64((s64)stat.mtime.tv_sec); |
1da177e4 LT |
2490 | WRITE32(stat.mtime.tv_nsec); |
2491 | } | |
2492 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
ddd1ea56 BF |
2493 | p = xdr_reserve_space(xdr, 8); |
2494 | if (!p) | |
1da177e4 | 2495 | goto out_resource; |
406a7ea9 FF |
2496 | /* |
2497 | * Get parent's attributes if not ignoring crossmount | |
2498 | * and this is the root of a cross-mounted filesystem. | |
2499 | */ | |
2500 | if (ignore_crossmnt == 0 && | |
ae7095a7 BF |
2501 | dentry == exp->ex_path.mnt->mnt_root) |
2502 | get_parent_attributes(exp, &stat); | |
40ee5dc6 | 2503 | WRITE64(stat.ino); |
1da177e4 | 2504 | } |
18032ca0 | 2505 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { |
ddd1ea56 BF |
2506 | status = nfsd4_encode_security_label(xdr, rqstp, context, |
2507 | contextlen); | |
18032ca0 DQ |
2508 | if (status) |
2509 | goto out; | |
2510 | } | |
8c18f205 | 2511 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
ddd1ea56 BF |
2512 | p = xdr_reserve_space(xdr, 16); |
2513 | if (!p) | |
de3997a7 | 2514 | goto out_resource; |
8c18f205 BH |
2515 | WRITE32(3); |
2516 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0); | |
2517 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1); | |
2518 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2); | |
2519 | } | |
7e705706 | 2520 | |
082d4bd7 BF |
2521 | attrlen = htonl(xdr->buf->len - attrlen_offset - 4); |
2522 | write_bytes_to_xdr_buf(xdr->buf, attrlen_offset, &attrlen, 4); | |
1da177e4 LT |
2523 | status = nfs_ok; |
2524 | ||
2525 | out: | |
ba4e55bb | 2526 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
18032ca0 DQ |
2527 | if (context) |
2528 | security_release_secctx(context, contextlen); | |
ba4e55bb | 2529 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ |
28e05dd8 | 2530 | kfree(acl); |
18df11d0 | 2531 | if (tempfh) { |
d50e6136 | 2532 | fh_put(tempfh); |
18df11d0 YZ |
2533 | kfree(tempfh); |
2534 | } | |
1fcea5b2 BF |
2535 | if (status) |
2536 | xdr_truncate_encode(xdr, starting_len); | |
1da177e4 LT |
2537 | return status; |
2538 | out_nfserr: | |
b8dd7b9a | 2539 | status = nfserrno(err); |
1da177e4 LT |
2540 | goto out; |
2541 | out_resource: | |
1da177e4 LT |
2542 | status = nfserr_resource; |
2543 | goto out; | |
1da177e4 LT |
2544 | } |
2545 | ||
2825a7f9 BF |
2546 | static void svcxdr_init_encode_from_buffer(struct xdr_stream *xdr, |
2547 | struct xdr_buf *buf, __be32 *p, int bytes) | |
2548 | { | |
2549 | xdr->scratch.iov_len = 0; | |
2550 | memset(buf, 0, sizeof(struct xdr_buf)); | |
2551 | buf->head[0].iov_base = p; | |
2552 | buf->head[0].iov_len = 0; | |
2553 | buf->len = 0; | |
2554 | xdr->buf = buf; | |
2555 | xdr->iov = buf->head; | |
2556 | xdr->p = p; | |
2557 | xdr->end = (void *)p + bytes; | |
2558 | buf->buflen = bytes; | |
2559 | } | |
2560 | ||
d5184658 BF |
2561 | __be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words, |
2562 | struct svc_fh *fhp, struct svc_export *exp, | |
2563 | struct dentry *dentry, u32 *bmval, | |
2564 | struct svc_rqst *rqstp, int ignore_crossmnt) | |
2565 | { | |
2825a7f9 | 2566 | struct xdr_buf dummy; |
d5184658 BF |
2567 | struct xdr_stream xdr; |
2568 | __be32 ret; | |
2569 | ||
2825a7f9 | 2570 | svcxdr_init_encode_from_buffer(&xdr, &dummy, *p, words << 2); |
d5184658 BF |
2571 | ret = nfsd4_encode_fattr(&xdr, fhp, exp, dentry, bmval, rqstp, |
2572 | ignore_crossmnt); | |
2573 | *p = xdr.p; | |
2574 | return ret; | |
2575 | } | |
2576 | ||
c0ce6ec8 BF |
2577 | static inline int attributes_need_mount(u32 *bmval) |
2578 | { | |
2579 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2580 | return 1; | |
2581 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2582 | return 1; | |
2583 | return 0; | |
2584 | } | |
2585 | ||
b37ad28b | 2586 | static __be32 |
561f0ed4 BF |
2587 | nfsd4_encode_dirent_fattr(struct xdr_stream *xdr, struct nfsd4_readdir *cd, |
2588 | const char *name, int namlen) | |
1da177e4 LT |
2589 | { |
2590 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2591 | struct dentry *dentry; | |
b37ad28b | 2592 | __be32 nfserr; |
406a7ea9 | 2593 | int ignore_crossmnt = 0; |
1da177e4 LT |
2594 | |
2595 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
2596 | if (IS_ERR(dentry)) | |
2597 | return nfserrno(PTR_ERR(dentry)); | |
b2c0cea6 BF |
2598 | if (!dentry->d_inode) { |
2599 | /* | |
2600 | * nfsd_buffered_readdir drops the i_mutex between | |
2601 | * readdir and calling this callback, leaving a window | |
2602 | * where this directory entry could have gone away. | |
2603 | */ | |
2604 | dput(dentry); | |
2605 | return nfserr_noent; | |
2606 | } | |
1da177e4 LT |
2607 | |
2608 | exp_get(exp); | |
406a7ea9 FF |
2609 | /* |
2610 | * In the case of a mountpoint, the client may be asking for | |
2611 | * attributes that are only properties of the underlying filesystem | |
2612 | * as opposed to the cross-mounted file system. In such a case, | |
2613 | * we will not follow the cross mount and will fill the attribtutes | |
2614 | * directly from the mountpoint dentry. | |
2615 | */ | |
3227fa41 | 2616 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
2617 | int err; |
2618 | ||
3227fa41 BF |
2619 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
2620 | && !attributes_need_mount(cd->rd_bmval)) { | |
2621 | ignore_crossmnt = 1; | |
2622 | goto out_encode; | |
2623 | } | |
dcb488a3 AA |
2624 | /* |
2625 | * Why the heck aren't we just using nfsd_lookup?? | |
2626 | * Different "."/".." handling? Something else? | |
2627 | * At least, add a comment here to explain.... | |
2628 | */ | |
021d3a72 BF |
2629 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
2630 | if (err) { | |
2631 | nfserr = nfserrno(err); | |
1da177e4 LT |
2632 | goto out_put; |
2633 | } | |
dcb488a3 AA |
2634 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
2635 | if (nfserr) | |
2636 | goto out_put; | |
1da177e4 LT |
2637 | |
2638 | } | |
3227fa41 | 2639 | out_encode: |
561f0ed4 | 2640 | nfserr = nfsd4_encode_fattr(xdr, NULL, exp, dentry, cd->rd_bmval, |
406a7ea9 | 2641 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
2642 | out_put: |
2643 | dput(dentry); | |
2644 | exp_put(exp); | |
2645 | return nfserr; | |
2646 | } | |
2647 | ||
2ebbc012 | 2648 | static __be32 * |
561f0ed4 | 2649 | nfsd4_encode_rdattr_error(struct xdr_stream *xdr, __be32 nfserr) |
1da177e4 | 2650 | { |
561f0ed4 BF |
2651 | __be32 *p; |
2652 | ||
2653 | p = xdr_reserve_space(xdr, 6); | |
2654 | if (!p) | |
1da177e4 LT |
2655 | return NULL; |
2656 | *p++ = htonl(2); | |
2657 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
2658 | *p++ = htonl(0); /* bmval1 */ | |
2659 | ||
87915c64 | 2660 | *p++ = htonl(4); /* attribute length */ |
1da177e4 | 2661 | *p++ = nfserr; /* no htonl */ |
1da177e4 LT |
2662 | return p; |
2663 | } | |
2664 | ||
2665 | static int | |
a0ad13ef N |
2666 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
2667 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 2668 | { |
a0ad13ef | 2669 | struct readdir_cd *ccd = ccdv; |
1da177e4 | 2670 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
561f0ed4 BF |
2671 | struct xdr_stream *xdr = cd->xdr; |
2672 | int start_offset = xdr->buf->len; | |
2673 | int cookie_offset; | |
2674 | int entry_bytes; | |
b37ad28b | 2675 | __be32 nfserr = nfserr_toosmall; |
561f0ed4 BF |
2676 | __be64 wire_offset; |
2677 | __be32 *p; | |
1da177e4 LT |
2678 | |
2679 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
2680 | if (name && isdotent(name, namlen)) { | |
2681 | cd->common.err = nfs_ok; | |
2682 | return 0; | |
2683 | } | |
2684 | ||
561f0ed4 BF |
2685 | if (cd->cookie_offset) { |
2686 | wire_offset = cpu_to_be64(offset); | |
2687 | write_bytes_to_xdr_buf(xdr->buf, cd->cookie_offset, | |
2688 | &wire_offset, 8); | |
2689 | } | |
1da177e4 | 2690 | |
561f0ed4 BF |
2691 | p = xdr_reserve_space(xdr, 4); |
2692 | if (!p) | |
1da177e4 | 2693 | goto fail; |
1da177e4 | 2694 | *p++ = xdr_one; /* mark entry present */ |
561f0ed4 BF |
2695 | cookie_offset = xdr->buf->len; |
2696 | p = xdr_reserve_space(xdr, 3*4 + namlen); | |
2697 | if (!p) | |
2698 | goto fail; | |
1da177e4 LT |
2699 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
2700 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
2701 | ||
561f0ed4 | 2702 | nfserr = nfsd4_encode_dirent_fattr(xdr, cd, name, namlen); |
1da177e4 LT |
2703 | switch (nfserr) { |
2704 | case nfs_ok: | |
1da177e4 LT |
2705 | break; |
2706 | case nfserr_resource: | |
2707 | nfserr = nfserr_toosmall; | |
2708 | goto fail; | |
b2c0cea6 BF |
2709 | case nfserr_noent: |
2710 | goto skip_entry; | |
1da177e4 LT |
2711 | default: |
2712 | /* | |
2713 | * If the client requested the RDATTR_ERROR attribute, | |
2714 | * we stuff the error code into this attribute | |
2715 | * and continue. If this attribute was not requested, | |
2716 | * then in accordance with the spec, we fail the | |
2717 | * entire READDIR operation(!) | |
2718 | */ | |
2719 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
2720 | goto fail; | |
561f0ed4 | 2721 | p = nfsd4_encode_rdattr_error(xdr, nfserr); |
34081efc FI |
2722 | if (p == NULL) { |
2723 | nfserr = nfserr_toosmall; | |
1da177e4 | 2724 | goto fail; |
34081efc | 2725 | } |
1da177e4 | 2726 | } |
561f0ed4 BF |
2727 | nfserr = nfserr_toosmall; |
2728 | entry_bytes = xdr->buf->len - start_offset; | |
2729 | if (entry_bytes > cd->rd_maxcount) | |
2730 | goto fail; | |
2731 | cd->rd_maxcount -= entry_bytes; | |
3b299709 BF |
2732 | if (!cd->rd_dircount) |
2733 | goto fail; | |
2734 | cd->rd_dircount--; | |
561f0ed4 | 2735 | cd->cookie_offset = cookie_offset; |
b2c0cea6 | 2736 | skip_entry: |
1da177e4 LT |
2737 | cd->common.err = nfs_ok; |
2738 | return 0; | |
2739 | fail: | |
561f0ed4 | 2740 | xdr_truncate_encode(xdr, start_offset); |
1da177e4 LT |
2741 | cd->common.err = nfserr; |
2742 | return -EINVAL; | |
2743 | } | |
2744 | ||
d0a381dd BF |
2745 | static __be32 |
2746 | nfsd4_encode_stateid(struct xdr_stream *xdr, stateid_t *sid) | |
e2f282b9 | 2747 | { |
bc749ca4 | 2748 | __be32 *p; |
e2f282b9 | 2749 | |
d0a381dd BF |
2750 | p = xdr_reserve_space(xdr, sizeof(stateid_t)); |
2751 | if (!p) | |
2752 | return nfserr_resource; | |
e2f282b9 BH |
2753 | WRITE32(sid->si_generation); |
2754 | WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
d0a381dd | 2755 | return 0; |
e2f282b9 BH |
2756 | } |
2757 | ||
695e12f8 | 2758 | static __be32 |
b37ad28b | 2759 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 2760 | { |
d0a381dd | 2761 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2762 | __be32 *p; |
1da177e4 LT |
2763 | |
2764 | if (!nfserr) { | |
d0a381dd BF |
2765 | p = xdr_reserve_space(xdr, 8); |
2766 | if (!p) | |
2767 | return nfserr_resource; | |
1da177e4 LT |
2768 | WRITE32(access->ac_supported); |
2769 | WRITE32(access->ac_resp_access); | |
1da177e4 | 2770 | } |
695e12f8 | 2771 | return nfserr; |
1da177e4 LT |
2772 | } |
2773 | ||
1d1bc8f2 BF |
2774 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
2775 | { | |
d0a381dd | 2776 | struct xdr_stream *xdr = &resp->xdr; |
1d1bc8f2 BF |
2777 | __be32 *p; |
2778 | ||
2779 | if (!nfserr) { | |
d0a381dd BF |
2780 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 8); |
2781 | if (!p) | |
2782 | return nfserr_resource; | |
1d1bc8f2 BF |
2783 | WRITEMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); |
2784 | WRITE32(bcts->dir); | |
6e67b5d1 | 2785 | /* Sorry, we do not yet support RDMA over 4.1: */ |
1d1bc8f2 | 2786 | WRITE32(0); |
1d1bc8f2 BF |
2787 | } |
2788 | return nfserr; | |
2789 | } | |
2790 | ||
695e12f8 | 2791 | static __be32 |
b37ad28b | 2792 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 | 2793 | { |
d0a381dd BF |
2794 | struct xdr_stream *xdr = &resp->xdr; |
2795 | ||
e2f282b9 | 2796 | if (!nfserr) |
d0a381dd | 2797 | nfserr = nfsd4_encode_stateid(xdr, &close->cl_stateid); |
e2f282b9 | 2798 | |
695e12f8 | 2799 | return nfserr; |
1da177e4 LT |
2800 | } |
2801 | ||
2802 | ||
695e12f8 | 2803 | static __be32 |
b37ad28b | 2804 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 2805 | { |
d0a381dd | 2806 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2807 | __be32 *p; |
1da177e4 LT |
2808 | |
2809 | if (!nfserr) { | |
d0a381dd BF |
2810 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
2811 | if (!p) | |
2812 | return nfserr_resource; | |
ab4684d1 | 2813 | WRITEMEM(commit->co_verf.data, NFS4_VERIFIER_SIZE); |
1da177e4 | 2814 | } |
695e12f8 | 2815 | return nfserr; |
1da177e4 LT |
2816 | } |
2817 | ||
695e12f8 | 2818 | static __be32 |
b37ad28b | 2819 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 2820 | { |
d0a381dd | 2821 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2822 | __be32 *p; |
1da177e4 LT |
2823 | |
2824 | if (!nfserr) { | |
d0a381dd BF |
2825 | p = xdr_reserve_space(xdr, 32); |
2826 | if (!p) | |
2827 | return nfserr_resource; | |
c654b8a9 | 2828 | write_cinfo(&p, &create->cr_cinfo); |
1da177e4 LT |
2829 | WRITE32(2); |
2830 | WRITE32(create->cr_bmval[0]); | |
2831 | WRITE32(create->cr_bmval[1]); | |
1da177e4 | 2832 | } |
695e12f8 | 2833 | return nfserr; |
1da177e4 LT |
2834 | } |
2835 | ||
b37ad28b AV |
2836 | static __be32 |
2837 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
2838 | { |
2839 | struct svc_fh *fhp = getattr->ga_fhp; | |
d5184658 | 2840 | struct xdr_stream *xdr = &resp->xdr; |
1da177e4 LT |
2841 | |
2842 | if (nfserr) | |
2843 | return nfserr; | |
2844 | ||
d5184658 BF |
2845 | nfserr = nfsd4_encode_fattr(xdr, fhp, fhp->fh_export, fhp->fh_dentry, |
2846 | getattr->ga_bmval, | |
406a7ea9 | 2847 | resp->rqstp, 0); |
1da177e4 LT |
2848 | return nfserr; |
2849 | } | |
2850 | ||
695e12f8 BH |
2851 | static __be32 |
2852 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 2853 | { |
d0a381dd | 2854 | struct xdr_stream *xdr = &resp->xdr; |
695e12f8 | 2855 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 2856 | unsigned int len; |
bc749ca4 | 2857 | __be32 *p; |
1da177e4 LT |
2858 | |
2859 | if (!nfserr) { | |
2860 | len = fhp->fh_handle.fh_size; | |
d0a381dd BF |
2861 | p = xdr_reserve_space(xdr, len + 4); |
2862 | if (!p) | |
2863 | return nfserr_resource; | |
1da177e4 LT |
2864 | WRITE32(len); |
2865 | WRITEMEM(&fhp->fh_handle.fh_base, len); | |
1da177e4 | 2866 | } |
695e12f8 | 2867 | return nfserr; |
1da177e4 LT |
2868 | } |
2869 | ||
2870 | /* | |
2871 | * Including all fields other than the name, a LOCK4denied structure requires | |
2872 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
2873 | */ | |
d0a381dd BF |
2874 | static __be32 |
2875 | nfsd4_encode_lock_denied(struct xdr_stream *xdr, struct nfsd4_lock_denied *ld) | |
1da177e4 | 2876 | { |
7c13f344 | 2877 | struct xdr_netobj *conf = &ld->ld_owner; |
bc749ca4 | 2878 | __be32 *p; |
1da177e4 | 2879 | |
8c7424cf | 2880 | again: |
d0a381dd | 2881 | p = xdr_reserve_space(xdr, 32 + XDR_LEN(conf->len)); |
8c7424cf BF |
2882 | if (!p) { |
2883 | /* | |
2884 | * Don't fail to return the result just because we can't | |
2885 | * return the conflicting open: | |
2886 | */ | |
2887 | if (conf->len) { | |
2888 | conf->len = 0; | |
2889 | conf->data = NULL; | |
2890 | goto again; | |
2891 | } | |
d0a381dd | 2892 | return nfserr_resource; |
8c7424cf | 2893 | } |
1da177e4 LT |
2894 | WRITE64(ld->ld_start); |
2895 | WRITE64(ld->ld_length); | |
2896 | WRITE32(ld->ld_type); | |
7c13f344 | 2897 | if (conf->len) { |
1da177e4 | 2898 | WRITEMEM(&ld->ld_clientid, 8); |
7c13f344 BF |
2899 | WRITE32(conf->len); |
2900 | WRITEMEM(conf->data, conf->len); | |
1da177e4 LT |
2901 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
2902 | WRITE64((u64)0); /* clientid */ | |
2903 | WRITE32(0); /* length of owner name */ | |
2904 | } | |
d0a381dd | 2905 | return nfserr_denied; |
1da177e4 LT |
2906 | } |
2907 | ||
695e12f8 | 2908 | static __be32 |
b37ad28b | 2909 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 2910 | { |
d0a381dd BF |
2911 | struct xdr_stream *xdr = &resp->xdr; |
2912 | ||
e2f282b9 | 2913 | if (!nfserr) |
d0a381dd | 2914 | nfserr = nfsd4_encode_stateid(xdr, &lock->lk_resp_stateid); |
e2f282b9 | 2915 | else if (nfserr == nfserr_denied) |
d0a381dd | 2916 | nfserr = nfsd4_encode_lock_denied(xdr, &lock->lk_denied); |
8c7424cf | 2917 | kfree(lock->lk_denied.ld_owner.data); |
695e12f8 | 2918 | return nfserr; |
1da177e4 LT |
2919 | } |
2920 | ||
695e12f8 | 2921 | static __be32 |
b37ad28b | 2922 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 | 2923 | { |
d0a381dd BF |
2924 | struct xdr_stream *xdr = &resp->xdr; |
2925 | ||
1da177e4 | 2926 | if (nfserr == nfserr_denied) |
d0a381dd | 2927 | nfsd4_encode_lock_denied(xdr, &lockt->lt_denied); |
695e12f8 | 2928 | return nfserr; |
1da177e4 LT |
2929 | } |
2930 | ||
695e12f8 | 2931 | static __be32 |
b37ad28b | 2932 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 | 2933 | { |
d0a381dd BF |
2934 | struct xdr_stream *xdr = &resp->xdr; |
2935 | ||
e2f282b9 | 2936 | if (!nfserr) |
d0a381dd | 2937 | nfserr = nfsd4_encode_stateid(xdr, &locku->lu_stateid); |
e2f282b9 | 2938 | |
695e12f8 | 2939 | return nfserr; |
1da177e4 LT |
2940 | } |
2941 | ||
2942 | ||
695e12f8 | 2943 | static __be32 |
b37ad28b | 2944 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 2945 | { |
d0a381dd | 2946 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2947 | __be32 *p; |
1da177e4 LT |
2948 | |
2949 | if (!nfserr) { | |
d0a381dd BF |
2950 | p = xdr_reserve_space(xdr, 20); |
2951 | if (!p) | |
2952 | return nfserr_resource; | |
c654b8a9 | 2953 | write_cinfo(&p, &link->li_cinfo); |
1da177e4 | 2954 | } |
695e12f8 | 2955 | return nfserr; |
1da177e4 LT |
2956 | } |
2957 | ||
2958 | ||
695e12f8 | 2959 | static __be32 |
b37ad28b | 2960 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 2961 | { |
d0a381dd | 2962 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2963 | __be32 *p; |
1da177e4 LT |
2964 | |
2965 | if (nfserr) | |
2966 | goto out; | |
2967 | ||
d0a381dd BF |
2968 | nfserr = nfsd4_encode_stateid(xdr, &open->op_stateid); |
2969 | if (nfserr) | |
2970 | goto out; | |
2971 | p = xdr_reserve_space(xdr, 40); | |
2972 | if (!p) | |
2973 | return nfserr_resource; | |
c654b8a9 | 2974 | write_cinfo(&p, &open->op_cinfo); |
1da177e4 LT |
2975 | WRITE32(open->op_rflags); |
2976 | WRITE32(2); | |
2977 | WRITE32(open->op_bmval[0]); | |
2978 | WRITE32(open->op_bmval[1]); | |
2979 | WRITE32(open->op_delegate_type); | |
1da177e4 LT |
2980 | |
2981 | switch (open->op_delegate_type) { | |
2982 | case NFS4_OPEN_DELEGATE_NONE: | |
2983 | break; | |
2984 | case NFS4_OPEN_DELEGATE_READ: | |
d0a381dd BF |
2985 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
2986 | if (nfserr) | |
2987 | return nfserr; | |
2988 | p = xdr_reserve_space(xdr, 20); | |
2989 | if (!p) | |
2990 | return nfserr_resource; | |
7b190fec | 2991 | WRITE32(open->op_recall); |
1da177e4 LT |
2992 | |
2993 | /* | |
2994 | * TODO: ACE's in delegations | |
2995 | */ | |
2996 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2997 | WRITE32(0); | |
2998 | WRITE32(0); | |
2999 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 LT |
3000 | break; |
3001 | case NFS4_OPEN_DELEGATE_WRITE: | |
d0a381dd BF |
3002 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
3003 | if (nfserr) | |
3004 | return nfserr; | |
3005 | p = xdr_reserve_space(xdr, 32); | |
3006 | if (!p) | |
3007 | return nfserr_resource; | |
1da177e4 LT |
3008 | WRITE32(0); |
3009 | ||
3010 | /* | |
3011 | * TODO: space_limit's in delegations | |
3012 | */ | |
3013 | WRITE32(NFS4_LIMIT_SIZE); | |
3014 | WRITE32(~(u32)0); | |
3015 | WRITE32(~(u32)0); | |
3016 | ||
3017 | /* | |
3018 | * TODO: ACE's in delegations | |
3019 | */ | |
3020 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
3021 | WRITE32(0); | |
3022 | WRITE32(0); | |
3023 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 | 3024 | break; |
d24433cd BH |
3025 | case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */ |
3026 | switch (open->op_why_no_deleg) { | |
3027 | case WND4_CONTENTION: | |
3028 | case WND4_RESOURCE: | |
d0a381dd BF |
3029 | p = xdr_reserve_space(xdr, 8); |
3030 | if (!p) | |
3031 | return nfserr_resource; | |
d24433cd BH |
3032 | WRITE32(open->op_why_no_deleg); |
3033 | WRITE32(0); /* deleg signaling not supported yet */ | |
3034 | break; | |
3035 | default: | |
d0a381dd BF |
3036 | p = xdr_reserve_space(xdr, 4); |
3037 | if (!p) | |
3038 | return nfserr_resource; | |
d24433cd BH |
3039 | WRITE32(open->op_why_no_deleg); |
3040 | } | |
d24433cd | 3041 | break; |
1da177e4 LT |
3042 | default: |
3043 | BUG(); | |
3044 | } | |
3045 | /* XXX save filehandle here */ | |
3046 | out: | |
695e12f8 | 3047 | return nfserr; |
1da177e4 LT |
3048 | } |
3049 | ||
695e12f8 | 3050 | static __be32 |
b37ad28b | 3051 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 | 3052 | { |
d0a381dd BF |
3053 | struct xdr_stream *xdr = &resp->xdr; |
3054 | ||
e2f282b9 | 3055 | if (!nfserr) |
d0a381dd | 3056 | nfserr = nfsd4_encode_stateid(xdr, &oc->oc_resp_stateid); |
1da177e4 | 3057 | |
695e12f8 | 3058 | return nfserr; |
1da177e4 LT |
3059 | } |
3060 | ||
695e12f8 | 3061 | static __be32 |
b37ad28b | 3062 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 | 3063 | { |
d0a381dd BF |
3064 | struct xdr_stream *xdr = &resp->xdr; |
3065 | ||
e2f282b9 | 3066 | if (!nfserr) |
d0a381dd | 3067 | nfserr = nfsd4_encode_stateid(xdr, &od->od_stateid); |
1da177e4 | 3068 | |
695e12f8 | 3069 | return nfserr; |
1da177e4 LT |
3070 | } |
3071 | ||
b37ad28b AV |
3072 | static __be32 |
3073 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
44524359 | 3074 | struct nfsd4_read *read) |
1da177e4 LT |
3075 | { |
3076 | u32 eof; | |
afc59400 BF |
3077 | int v; |
3078 | struct page *page; | |
1da177e4 | 3079 | unsigned long maxcount; |
ddd1ea56 | 3080 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3081 | int starting_len = xdr->buf->len; |
30596768 | 3082 | int space_left; |
1da177e4 | 3083 | long len; |
bc749ca4 | 3084 | __be32 *p; |
1da177e4 LT |
3085 | |
3086 | if (nfserr) | |
3087 | return nfserr; | |
1da177e4 | 3088 | |
d0a381dd | 3089 | p = xdr_reserve_space(xdr, 8); /* eof flag and byte count */ |
b0e35fda BF |
3090 | if (!p) { |
3091 | WARN_ON_ONCE(resp->rqstp->rq_splice_ok); | |
d0a381dd | 3092 | return nfserr_resource; |
b0e35fda | 3093 | } |
1da177e4 | 3094 | |
4e21ac4b BF |
3095 | /* Make sure there will be room for padding if needed: */ |
3096 | if (xdr->end - xdr->p < 1) | |
3097 | return nfserr_resource; | |
3098 | ||
b0e35fda BF |
3099 | if (resp->xdr.buf->page_len) { |
3100 | WARN_ON_ONCE(resp->rqstp->rq_splice_ok); | |
2825a7f9 | 3101 | return nfserr_resource; |
b0e35fda | 3102 | } |
2825a7f9 | 3103 | |
7adae489 | 3104 | maxcount = svc_max_payload(resp->rqstp); |
1da177e4 LT |
3105 | if (maxcount > read->rd_length) |
3106 | maxcount = read->rd_length; | |
3107 | ||
3108 | len = maxcount; | |
3109 | v = 0; | |
6ff9897d BF |
3110 | while (len) { |
3111 | int thislen; | |
3112 | ||
afc59400 BF |
3113 | page = *(resp->rqstp->rq_next_page); |
3114 | if (!page) { /* ran out of pages */ | |
d5f50b0c BF |
3115 | maxcount -= len; |
3116 | break; | |
3117 | } | |
6ff9897d | 3118 | thislen = min_t(long, len, PAGE_SIZE); |
afc59400 | 3119 | resp->rqstp->rq_vec[v].iov_base = page_address(page); |
6ff9897d | 3120 | resp->rqstp->rq_vec[v].iov_len = thislen; |
afc59400 | 3121 | resp->rqstp->rq_next_page++; |
1da177e4 | 3122 | v++; |
6ff9897d | 3123 | len -= thislen; |
1da177e4 LT |
3124 | } |
3125 | read->rd_vlen = v; | |
3126 | ||
039a87ca | 3127 | nfserr = nfsd_read_file(read->rd_rqstp, read->rd_fhp, read->rd_filp, |
3cc03b16 | 3128 | read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, |
1da177e4 LT |
3129 | &maxcount); |
3130 | ||
d3f627c8 | 3131 | if (nfserr) { |
1fcea5b2 BF |
3132 | /* |
3133 | * nfsd_splice_actor may have already messed with the | |
3134 | * page length; reset it so as not to confuse | |
3135 | * xdr_truncate_encode: | |
3136 | */ | |
3137 | xdr->buf->page_len = 0; | |
3138 | xdr_truncate_encode(xdr, starting_len); | |
1da177e4 | 3139 | return nfserr; |
d3f627c8 | 3140 | } |
44524359 N |
3141 | eof = (read->rd_offset + maxcount >= |
3142 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 LT |
3143 | |
3144 | WRITE32(eof); | |
3145 | WRITE32(maxcount); | |
6ac90391 BF |
3146 | WARN_ON_ONCE(resp->xdr.buf->head[0].iov_len != (char *)p |
3147 | - (char *)resp->xdr.buf->head[0].iov_base); | |
4aea24b2 | 3148 | resp->xdr.buf->page_len = maxcount; |
6ac90391 | 3149 | xdr->buf->len += maxcount; |
2825a7f9 | 3150 | xdr->page_ptr += v; |
ddd1ea56 | 3151 | xdr->iov = xdr->buf->tail; |
1da177e4 | 3152 | |
6ed6decc | 3153 | /* Use rest of head for padding and remaining ops: */ |
4aea24b2 BF |
3154 | resp->xdr.buf->tail[0].iov_base = p; |
3155 | resp->xdr.buf->tail[0].iov_len = 0; | |
1da177e4 | 3156 | if (maxcount&3) { |
d0a381dd | 3157 | p = xdr_reserve_space(xdr, 4); |
6ed6decc | 3158 | WRITE32(0); |
4aea24b2 BF |
3159 | resp->xdr.buf->tail[0].iov_base += maxcount&3; |
3160 | resp->xdr.buf->tail[0].iov_len = 4 - (maxcount&3); | |
6ac90391 | 3161 | xdr->buf->len -= (maxcount&3); |
1da177e4 | 3162 | } |
30596768 BF |
3163 | |
3164 | space_left = min_t(int, (void *)xdr->end - (void *)xdr->p, | |
3165 | xdr->buf->buflen - xdr->buf->len); | |
3166 | xdr->buf->buflen = xdr->buf->len + space_left; | |
3167 | xdr->end = (__be32 *)((void *)xdr->end + space_left); | |
3168 | ||
1da177e4 LT |
3169 | return 0; |
3170 | } | |
3171 | ||
b37ad28b AV |
3172 | static __be32 |
3173 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
3174 | { |
3175 | int maxcount; | |
476a7b1f BF |
3176 | __be32 wire_count; |
3177 | int zero = 0; | |
ddd1ea56 | 3178 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3179 | int length_offset = xdr->buf->len; |
bc749ca4 | 3180 | __be32 *p; |
1da177e4 LT |
3181 | |
3182 | if (nfserr) | |
3183 | return nfserr; | |
2825a7f9 BF |
3184 | |
3185 | p = xdr_reserve_space(xdr, 4); | |
3186 | if (!p) | |
3187 | return nfserr_resource; | |
1da177e4 | 3188 | maxcount = PAGE_SIZE; |
d0a381dd | 3189 | |
476a7b1f BF |
3190 | p = xdr_reserve_space(xdr, maxcount); |
3191 | if (!p) | |
4e21ac4b | 3192 | return nfserr_resource; |
1da177e4 LT |
3193 | /* |
3194 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
3195 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
3196 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
3197 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
3198 | */ | |
476a7b1f BF |
3199 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, |
3200 | (char *)p, &maxcount); | |
1da177e4 | 3201 | if (nfserr == nfserr_isdir) |
d3f627c8 BF |
3202 | nfserr = nfserr_inval; |
3203 | if (nfserr) { | |
1fcea5b2 | 3204 | xdr_truncate_encode(xdr, length_offset); |
1da177e4 | 3205 | return nfserr; |
d3f627c8 | 3206 | } |
1da177e4 | 3207 | |
476a7b1f BF |
3208 | wire_count = htonl(maxcount); |
3209 | write_bytes_to_xdr_buf(xdr->buf, length_offset, &wire_count, 4); | |
3210 | xdr_truncate_encode(xdr, length_offset + 4 + maxcount); | |
3211 | if (maxcount & 3) | |
3212 | write_bytes_to_xdr_buf(xdr->buf, length_offset + 4 + maxcount, | |
3213 | &zero, 4 - (maxcount&3)); | |
1da177e4 LT |
3214 | return 0; |
3215 | } | |
3216 | ||
b37ad28b AV |
3217 | static __be32 |
3218 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
3219 | { |
3220 | int maxcount; | |
561f0ed4 | 3221 | int bytes_left; |
1da177e4 | 3222 | loff_t offset; |
561f0ed4 | 3223 | __be64 wire_offset; |
ddd1ea56 | 3224 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3225 | int starting_len = xdr->buf->len; |
bc749ca4 | 3226 | __be32 *p; |
1da177e4 LT |
3227 | |
3228 | if (nfserr) | |
3229 | return nfserr; | |
1da177e4 | 3230 | |
d0a381dd BF |
3231 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
3232 | if (!p) | |
3233 | return nfserr_resource; | |
1da177e4 LT |
3234 | |
3235 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
3236 | WRITE32(0); | |
3237 | WRITE32(0); | |
4aea24b2 BF |
3238 | resp->xdr.buf->head[0].iov_len = ((char *)resp->xdr.p) |
3239 | - (char *)resp->xdr.buf->head[0].iov_base; | |
1da177e4 LT |
3240 | |
3241 | /* | |
561f0ed4 BF |
3242 | * Number of bytes left for directory entries allowing for the |
3243 | * final 8 bytes of the readdir and a following failed op: | |
3244 | */ | |
3245 | bytes_left = xdr->buf->buflen - xdr->buf->len | |
3246 | - COMPOUND_ERR_SLACK_SPACE - 8; | |
3247 | if (bytes_left < 0) { | |
3248 | nfserr = nfserr_resource; | |
3249 | goto err_no_verf; | |
3250 | } | |
3251 | maxcount = min_t(u32, readdir->rd_maxcount, INT_MAX); | |
3252 | /* | |
3253 | * Note the rfc defines rd_maxcount as the size of the | |
3254 | * READDIR4resok structure, which includes the verifier above | |
3255 | * and the 8 bytes encoded at the end of this function: | |
1da177e4 | 3256 | */ |
561f0ed4 BF |
3257 | if (maxcount < 16) { |
3258 | nfserr = nfserr_toosmall; | |
1da177e4 LT |
3259 | goto err_no_verf; |
3260 | } | |
561f0ed4 | 3261 | maxcount = min_t(int, maxcount-16, bytes_left); |
1da177e4 | 3262 | |
561f0ed4 BF |
3263 | readdir->xdr = xdr; |
3264 | readdir->rd_maxcount = maxcount; | |
1da177e4 | 3265 | readdir->common.err = 0; |
561f0ed4 | 3266 | readdir->cookie_offset = 0; |
1da177e4 LT |
3267 | |
3268 | offset = readdir->rd_cookie; | |
3269 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
3270 | &offset, | |
3271 | &readdir->common, nfsd4_encode_dirent); | |
3272 | if (nfserr == nfs_ok && | |
3273 | readdir->common.err == nfserr_toosmall && | |
561f0ed4 BF |
3274 | xdr->buf->len == starting_len + 8) { |
3275 | /* nothing encoded; which limit did we hit?: */ | |
3276 | if (maxcount - 16 < bytes_left) | |
3277 | /* It was the fault of rd_maxcount: */ | |
3278 | nfserr = nfserr_toosmall; | |
3279 | else | |
3280 | /* We ran out of buffer space: */ | |
3281 | nfserr = nfserr_resource; | |
3282 | } | |
1da177e4 LT |
3283 | if (nfserr) |
3284 | goto err_no_verf; | |
3285 | ||
561f0ed4 BF |
3286 | if (readdir->cookie_offset) { |
3287 | wire_offset = cpu_to_be64(offset); | |
3288 | write_bytes_to_xdr_buf(xdr->buf, readdir->cookie_offset, | |
3289 | &wire_offset, 8); | |
3290 | } | |
1da177e4 | 3291 | |
561f0ed4 BF |
3292 | p = xdr_reserve_space(xdr, 8); |
3293 | if (!p) { | |
3294 | WARN_ON_ONCE(1); | |
3295 | goto err_no_verf; | |
3296 | } | |
1da177e4 LT |
3297 | *p++ = 0; /* no more entries */ |
3298 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
1da177e4 LT |
3299 | |
3300 | return 0; | |
3301 | err_no_verf: | |
1fcea5b2 | 3302 | xdr_truncate_encode(xdr, starting_len); |
1da177e4 LT |
3303 | return nfserr; |
3304 | } | |
3305 | ||
695e12f8 | 3306 | static __be32 |
b37ad28b | 3307 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 3308 | { |
d0a381dd | 3309 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3310 | __be32 *p; |
1da177e4 LT |
3311 | |
3312 | if (!nfserr) { | |
d0a381dd BF |
3313 | p = xdr_reserve_space(xdr, 20); |
3314 | if (!p) | |
3315 | return nfserr_resource; | |
c654b8a9 | 3316 | write_cinfo(&p, &remove->rm_cinfo); |
1da177e4 | 3317 | } |
695e12f8 | 3318 | return nfserr; |
1da177e4 LT |
3319 | } |
3320 | ||
695e12f8 | 3321 | static __be32 |
b37ad28b | 3322 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 3323 | { |
d0a381dd | 3324 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3325 | __be32 *p; |
1da177e4 LT |
3326 | |
3327 | if (!nfserr) { | |
d0a381dd BF |
3328 | p = xdr_reserve_space(xdr, 40); |
3329 | if (!p) | |
3330 | return nfserr_resource; | |
c654b8a9 BF |
3331 | write_cinfo(&p, &rename->rn_sinfo); |
3332 | write_cinfo(&p, &rename->rn_tinfo); | |
1da177e4 | 3333 | } |
695e12f8 | 3334 | return nfserr; |
1da177e4 LT |
3335 | } |
3336 | ||
695e12f8 | 3337 | static __be32 |
d0a381dd | 3338 | nfsd4_do_encode_secinfo(struct xdr_stream *xdr, |
a77c806f | 3339 | __be32 nfserr, struct svc_export *exp) |
dcb488a3 | 3340 | { |
676e4ebd | 3341 | u32 i, nflavs, supported; |
4796f457 BF |
3342 | struct exp_flavor_info *flavs; |
3343 | struct exp_flavor_info def_flavs[2]; | |
676e4ebd CL |
3344 | __be32 *p, *flavorsp; |
3345 | static bool report = true; | |
dcb488a3 AA |
3346 | |
3347 | if (nfserr) | |
3348 | goto out; | |
d0a381dd | 3349 | nfserr = nfserr_resource; |
4796f457 BF |
3350 | if (exp->ex_nflavors) { |
3351 | flavs = exp->ex_flavors; | |
3352 | nflavs = exp->ex_nflavors; | |
3353 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
3354 | flavs = def_flavs; | |
3355 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
3356 | nflavs = 2; | |
3357 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
3358 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
3359 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
3360 | nflavs = 1; | |
3361 | flavs[0].pseudoflavor | |
3362 | = svcauth_gss_flavor(exp->ex_client); | |
3363 | } else { | |
3364 | nflavs = 1; | |
3365 | flavs[0].pseudoflavor | |
3366 | = exp->ex_client->flavour->flavour; | |
3367 | } | |
3368 | } | |
3369 | ||
676e4ebd | 3370 | supported = 0; |
d0a381dd BF |
3371 | p = xdr_reserve_space(xdr, 4); |
3372 | if (!p) | |
3373 | goto out; | |
676e4ebd | 3374 | flavorsp = p++; /* to be backfilled later */ |
676e4ebd | 3375 | |
4796f457 | 3376 | for (i = 0; i < nflavs; i++) { |
676e4ebd | 3377 | rpc_authflavor_t pf = flavs[i].pseudoflavor; |
a77c806f | 3378 | struct rpcsec_gss_info info; |
dcb488a3 | 3379 | |
676e4ebd CL |
3380 | if (rpcauth_get_gssinfo(pf, &info) == 0) { |
3381 | supported++; | |
d0a381dd BF |
3382 | p = xdr_reserve_space(xdr, 4 + 4 + |
3383 | XDR_LEN(info.oid.len) + 4 + 4); | |
3384 | if (!p) | |
3385 | goto out; | |
dcb488a3 | 3386 | WRITE32(RPC_AUTH_GSS); |
a77c806f CL |
3387 | WRITE32(info.oid.len); |
3388 | WRITEMEM(info.oid.data, info.oid.len); | |
a77c806f | 3389 | WRITE32(info.qop); |
a77c806f | 3390 | WRITE32(info.service); |
676e4ebd CL |
3391 | } else if (pf < RPC_AUTH_MAXFLAVOR) { |
3392 | supported++; | |
d0a381dd BF |
3393 | p = xdr_reserve_space(xdr, 4); |
3394 | if (!p) | |
3395 | goto out; | |
676e4ebd | 3396 | WRITE32(pf); |
676e4ebd CL |
3397 | } else { |
3398 | if (report) | |
3399 | pr_warn("NFS: SECINFO: security flavor %u " | |
3400 | "is not supported\n", pf); | |
dcb488a3 AA |
3401 | } |
3402 | } | |
a77c806f | 3403 | |
676e4ebd CL |
3404 | if (nflavs != supported) |
3405 | report = false; | |
3406 | *flavorsp = htonl(supported); | |
d0a381dd | 3407 | nfserr = 0; |
dcb488a3 AA |
3408 | out: |
3409 | if (exp) | |
3410 | exp_put(exp); | |
695e12f8 | 3411 | return nfserr; |
dcb488a3 AA |
3412 | } |
3413 | ||
22b6dee8 MJ |
3414 | static __be32 |
3415 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3416 | struct nfsd4_secinfo *secinfo) | |
3417 | { | |
d0a381dd BF |
3418 | struct xdr_stream *xdr = &resp->xdr; |
3419 | ||
3420 | return nfsd4_do_encode_secinfo(xdr, nfserr, secinfo->si_exp); | |
22b6dee8 MJ |
3421 | } |
3422 | ||
3423 | static __be32 | |
3424 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3425 | struct nfsd4_secinfo_no_name *secinfo) | |
3426 | { | |
d0a381dd BF |
3427 | struct xdr_stream *xdr = &resp->xdr; |
3428 | ||
3429 | return nfsd4_do_encode_secinfo(xdr, nfserr, secinfo->sin_exp); | |
22b6dee8 MJ |
3430 | } |
3431 | ||
1da177e4 LT |
3432 | /* |
3433 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
3434 | * regardless of the error status. | |
3435 | */ | |
695e12f8 | 3436 | static __be32 |
b37ad28b | 3437 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 3438 | { |
d0a381dd | 3439 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3440 | __be32 *p; |
1da177e4 | 3441 | |
d0a381dd BF |
3442 | p = xdr_reserve_space(xdr, 16); |
3443 | if (!p) | |
3444 | return nfserr_resource; | |
1da177e4 | 3445 | if (nfserr) { |
18032ca0 DQ |
3446 | WRITE32(3); |
3447 | WRITE32(0); | |
1da177e4 LT |
3448 | WRITE32(0); |
3449 | WRITE32(0); | |
3450 | } | |
3451 | else { | |
18032ca0 | 3452 | WRITE32(3); |
1da177e4 LT |
3453 | WRITE32(setattr->sa_bmval[0]); |
3454 | WRITE32(setattr->sa_bmval[1]); | |
18032ca0 | 3455 | WRITE32(setattr->sa_bmval[2]); |
1da177e4 | 3456 | } |
695e12f8 | 3457 | return nfserr; |
1da177e4 LT |
3458 | } |
3459 | ||
695e12f8 | 3460 | static __be32 |
b37ad28b | 3461 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 3462 | { |
d0a381dd | 3463 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3464 | __be32 *p; |
1da177e4 LT |
3465 | |
3466 | if (!nfserr) { | |
d0a381dd BF |
3467 | p = xdr_reserve_space(xdr, 8 + NFS4_VERIFIER_SIZE); |
3468 | if (!p) | |
3469 | return nfserr_resource; | |
1da177e4 | 3470 | WRITEMEM(&scd->se_clientid, 8); |
ab4684d1 | 3471 | WRITEMEM(&scd->se_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
3472 | } |
3473 | else if (nfserr == nfserr_clid_inuse) { | |
d0a381dd BF |
3474 | p = xdr_reserve_space(xdr, 8); |
3475 | if (!p) | |
3476 | return nfserr_resource; | |
1da177e4 LT |
3477 | WRITE32(0); |
3478 | WRITE32(0); | |
1da177e4 | 3479 | } |
695e12f8 | 3480 | return nfserr; |
1da177e4 LT |
3481 | } |
3482 | ||
695e12f8 | 3483 | static __be32 |
b37ad28b | 3484 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 3485 | { |
d0a381dd | 3486 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3487 | __be32 *p; |
1da177e4 LT |
3488 | |
3489 | if (!nfserr) { | |
d0a381dd BF |
3490 | p = xdr_reserve_space(xdr, 16); |
3491 | if (!p) | |
3492 | return nfserr_resource; | |
1da177e4 LT |
3493 | WRITE32(write->wr_bytes_written); |
3494 | WRITE32(write->wr_how_written); | |
ab4684d1 | 3495 | WRITEMEM(write->wr_verifier.data, NFS4_VERIFIER_SIZE); |
1da177e4 | 3496 | } |
695e12f8 | 3497 | return nfserr; |
1da177e4 LT |
3498 | } |
3499 | ||
57266a6e BF |
3500 | static const u32 nfs4_minimal_spo_must_enforce[2] = { |
3501 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
3502 | 1 << (OP_EXCHANGE_ID - 32) | | |
3503 | 1 << (OP_CREATE_SESSION - 32) | | |
3504 | 1 << (OP_DESTROY_SESSION - 32) | | |
3505 | 1 << (OP_DESTROY_CLIENTID - 32) | |
3506 | }; | |
3507 | ||
2db134eb | 3508 | static __be32 |
57b7b43b | 3509 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3510 | struct nfsd4_exchange_id *exid) |
3511 | { | |
d0a381dd | 3512 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3513 | __be32 *p; |
0733d213 AA |
3514 | char *major_id; |
3515 | char *server_scope; | |
3516 | int major_id_sz; | |
3517 | int server_scope_sz; | |
3518 | uint64_t minor_id = 0; | |
3519 | ||
3520 | if (nfserr) | |
3521 | return nfserr; | |
3522 | ||
3523 | major_id = utsname()->nodename; | |
3524 | major_id_sz = strlen(major_id); | |
3525 | server_scope = utsname()->nodename; | |
3526 | server_scope_sz = strlen(server_scope); | |
3527 | ||
d0a381dd | 3528 | p = xdr_reserve_space(xdr, |
0733d213 AA |
3529 | 8 /* eir_clientid */ + |
3530 | 4 /* eir_sequenceid */ + | |
3531 | 4 /* eir_flags */ + | |
a8bb84bc | 3532 | 4 /* spr_how */); |
d0a381dd BF |
3533 | if (!p) |
3534 | return nfserr_resource; | |
0733d213 AA |
3535 | |
3536 | WRITEMEM(&exid->clientid, 8); | |
3537 | WRITE32(exid->seqid); | |
3538 | WRITE32(exid->flags); | |
3539 | ||
0733d213 | 3540 | WRITE32(exid->spa_how); |
a8bb84bc | 3541 | |
57266a6e BF |
3542 | switch (exid->spa_how) { |
3543 | case SP4_NONE: | |
3544 | break; | |
3545 | case SP4_MACH_CRED: | |
a8bb84bc | 3546 | /* spo_must_enforce, spo_must_allow */ |
d0a381dd BF |
3547 | p = xdr_reserve_space(xdr, 16); |
3548 | if (!p) | |
3549 | return nfserr_resource; | |
a8bb84bc | 3550 | |
57266a6e BF |
3551 | /* spo_must_enforce bitmap: */ |
3552 | WRITE32(2); | |
3553 | WRITE32(nfs4_minimal_spo_must_enforce[0]); | |
3554 | WRITE32(nfs4_minimal_spo_must_enforce[1]); | |
3555 | /* empty spo_must_allow bitmap: */ | |
3556 | WRITE32(0); | |
a8bb84bc | 3557 | |
57266a6e BF |
3558 | break; |
3559 | default: | |
3560 | WARN_ON_ONCE(1); | |
3561 | } | |
0733d213 | 3562 | |
d0a381dd | 3563 | p = xdr_reserve_space(xdr, |
a8bb84bc KM |
3564 | 8 /* so_minor_id */ + |
3565 | 4 /* so_major_id.len */ + | |
3566 | (XDR_QUADLEN(major_id_sz) * 4) + | |
3567 | 4 /* eir_server_scope.len */ + | |
3568 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
3569 | 4 /* eir_server_impl_id.count (0) */); | |
d0a381dd BF |
3570 | if (!p) |
3571 | return nfserr_resource; | |
a8bb84bc | 3572 | |
0733d213 AA |
3573 | /* The server_owner struct */ |
3574 | WRITE64(minor_id); /* Minor id */ | |
3575 | /* major id */ | |
3576 | WRITE32(major_id_sz); | |
3577 | WRITEMEM(major_id, major_id_sz); | |
3578 | ||
3579 | /* Server scope */ | |
3580 | WRITE32(server_scope_sz); | |
3581 | WRITEMEM(server_scope, server_scope_sz); | |
3582 | ||
3583 | /* Implementation id */ | |
3584 | WRITE32(0); /* zero length nfs_impl_id4 array */ | |
0733d213 | 3585 | return 0; |
2db134eb AA |
3586 | } |
3587 | ||
3588 | static __be32 | |
57b7b43b | 3589 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3590 | struct nfsd4_create_session *sess) |
3591 | { | |
d0a381dd | 3592 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3593 | __be32 *p; |
ec6b5d7b AA |
3594 | |
3595 | if (nfserr) | |
3596 | return nfserr; | |
3597 | ||
d0a381dd BF |
3598 | p = xdr_reserve_space(xdr, 24); |
3599 | if (!p) | |
3600 | return nfserr_resource; | |
ec6b5d7b AA |
3601 | WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN); |
3602 | WRITE32(sess->seqid); | |
3603 | WRITE32(sess->flags); | |
ec6b5d7b | 3604 | |
d0a381dd BF |
3605 | p = xdr_reserve_space(xdr, 28); |
3606 | if (!p) | |
3607 | return nfserr_resource; | |
ec6b5d7b AA |
3608 | WRITE32(0); /* headerpadsz */ |
3609 | WRITE32(sess->fore_channel.maxreq_sz); | |
3610 | WRITE32(sess->fore_channel.maxresp_sz); | |
3611 | WRITE32(sess->fore_channel.maxresp_cached); | |
3612 | WRITE32(sess->fore_channel.maxops); | |
3613 | WRITE32(sess->fore_channel.maxreqs); | |
3614 | WRITE32(sess->fore_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
3615 | |
3616 | if (sess->fore_channel.nr_rdma_attrs) { | |
d0a381dd BF |
3617 | p = xdr_reserve_space(xdr, 4); |
3618 | if (!p) | |
3619 | return nfserr_resource; | |
ec6b5d7b | 3620 | WRITE32(sess->fore_channel.rdma_attrs); |
ec6b5d7b AA |
3621 | } |
3622 | ||
d0a381dd BF |
3623 | p = xdr_reserve_space(xdr, 28); |
3624 | if (!p) | |
3625 | return nfserr_resource; | |
ec6b5d7b AA |
3626 | WRITE32(0); /* headerpadsz */ |
3627 | WRITE32(sess->back_channel.maxreq_sz); | |
3628 | WRITE32(sess->back_channel.maxresp_sz); | |
3629 | WRITE32(sess->back_channel.maxresp_cached); | |
3630 | WRITE32(sess->back_channel.maxops); | |
3631 | WRITE32(sess->back_channel.maxreqs); | |
3632 | WRITE32(sess->back_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
3633 | |
3634 | if (sess->back_channel.nr_rdma_attrs) { | |
d0a381dd BF |
3635 | p = xdr_reserve_space(xdr, 4); |
3636 | if (!p) | |
3637 | return nfserr_resource; | |
ec6b5d7b | 3638 | WRITE32(sess->back_channel.rdma_attrs); |
ec6b5d7b AA |
3639 | } |
3640 | return 0; | |
2db134eb AA |
3641 | } |
3642 | ||
c47d832b | 3643 | static __be32 |
57b7b43b | 3644 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3645 | struct nfsd4_sequence *seq) |
3646 | { | |
d0a381dd | 3647 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3648 | __be32 *p; |
b85d4c01 BH |
3649 | |
3650 | if (nfserr) | |
3651 | return nfserr; | |
3652 | ||
d0a381dd BF |
3653 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 20); |
3654 | if (!p) | |
3655 | return nfserr_resource; | |
b85d4c01 BH |
3656 | WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); |
3657 | WRITE32(seq->seqid); | |
3658 | WRITE32(seq->slotid); | |
b7d7ca35 BF |
3659 | /* Note slotid's are numbered from zero: */ |
3660 | WRITE32(seq->maxslots - 1); /* sr_highest_slotid */ | |
3661 | WRITE32(seq->maxslots - 1); /* sr_target_highest_slotid */ | |
0d7bb719 | 3662 | WRITE32(seq->status_flags); |
b85d4c01 | 3663 | |
f5236013 | 3664 | resp->cstate.data_offset = xdr->buf->len; /* DRC cache data pointer */ |
b85d4c01 | 3665 | return 0; |
2db134eb AA |
3666 | } |
3667 | ||
2355c596 | 3668 | static __be32 |
57b7b43b | 3669 | nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
17456804 BS |
3670 | struct nfsd4_test_stateid *test_stateid) |
3671 | { | |
d0a381dd | 3672 | struct xdr_stream *xdr = &resp->xdr; |
03cfb420 | 3673 | struct nfsd4_test_stateid_id *stateid, *next; |
17456804 | 3674 | __be32 *p; |
17456804 | 3675 | |
a11fcce1 BF |
3676 | if (nfserr) |
3677 | return nfserr; | |
3678 | ||
d0a381dd BF |
3679 | p = xdr_reserve_space(xdr, 4 + (4 * test_stateid->ts_num_ids)); |
3680 | if (!p) | |
3681 | return nfserr_resource; | |
17456804 | 3682 | *p++ = htonl(test_stateid->ts_num_ids); |
17456804 | 3683 | |
03cfb420 | 3684 | list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) { |
02f5fde5 | 3685 | *p++ = stateid->ts_id_status; |
17456804 | 3686 | } |
17456804 BS |
3687 | |
3688 | return nfserr; | |
3689 | } | |
3690 | ||
695e12f8 BH |
3691 | static __be32 |
3692 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
3693 | { | |
3694 | return nfserr; | |
3695 | } | |
3696 | ||
3697 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
3698 | ||
2db134eb AA |
3699 | /* |
3700 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
3701 | * since we don't need to filter out obsolete ops as this is | |
3702 | * done in the decoding phase. | |
3703 | */ | |
695e12f8 | 3704 | static nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
3705 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
3706 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
3707 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
3708 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
3709 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
3710 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
3711 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
3712 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
3713 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
3714 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
3715 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
3716 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
3717 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
3718 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
3719 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3720 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 3721 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
3722 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
3723 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
3724 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3725 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3726 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3727 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
3728 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
3729 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
3730 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
3731 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
3732 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
3733 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3734 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3735 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
3736 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
3737 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
3738 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
3739 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3740 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
3741 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3742 | |
3743 | /* NFSv4.1 operations */ | |
3744 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
1d1bc8f2 | 3745 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
2db134eb AA |
3746 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
3747 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
43212cc7 KM |
3748 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_noop, |
3749 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3750 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3751 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, | |
3752 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
3753 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
3754 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
3755 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
22b6dee8 | 3756 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
2db134eb AA |
3757 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
3758 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
17456804 | 3759 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, |
2db134eb AA |
3760 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3761 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
3762 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
695e12f8 BH |
3763 | }; |
3764 | ||
496c262c | 3765 | /* |
a8095f7e BF |
3766 | * Calculate whether we still have space to encode repsize bytes. |
3767 | * There are two considerations: | |
3768 | * - For NFS versions >=4.1, the size of the reply must stay within | |
3769 | * session limits | |
3770 | * - For all NFS versions, we must stay within limited preallocated | |
3771 | * buffer space. | |
496c262c | 3772 | * |
a8095f7e BF |
3773 | * This is called before the operation is processed, so can only provide |
3774 | * an upper estimate. For some nonidempotent operations (such as | |
3775 | * getattr), it's not necessarily a problem if that estimate is wrong, | |
3776 | * as we can fail it after processing without significant side effects. | |
496c262c | 3777 | */ |
a8095f7e | 3778 | __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 respsize) |
496c262c | 3779 | { |
67492c99 | 3780 | struct xdr_buf *buf = &resp->rqstp->rq_res; |
47ee5298 | 3781 | struct nfsd4_slot *slot = resp->cstate.slot; |
496c262c | 3782 | |
47ee5298 BF |
3783 | if (buf->len + respsize <= buf->buflen) |
3784 | return nfs_ok; | |
3785 | if (!nfsd4_has_session(&resp->cstate)) | |
ea8d7720 | 3786 | return nfserr_resource; |
47ee5298 BF |
3787 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) { |
3788 | WARN_ON_ONCE(1); | |
3789 | return nfserr_rep_too_big_to_cache; | |
ea8d7720 | 3790 | } |
47ee5298 | 3791 | return nfserr_rep_too_big; |
496c262c AA |
3792 | } |
3793 | ||
1da177e4 LT |
3794 | void |
3795 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3796 | { | |
082d4bd7 | 3797 | struct xdr_stream *xdr = &resp->xdr; |
9411b1d4 | 3798 | struct nfs4_stateowner *so = resp->cstate.replay_owner; |
5f4ab945 | 3799 | struct svc_rqst *rqstp = resp->rqstp; |
082d4bd7 | 3800 | int post_err_offset; |
07d1f802 | 3801 | nfsd4_enc encoder; |
bc749ca4 | 3802 | __be32 *p; |
1da177e4 | 3803 | |
d0a381dd BF |
3804 | p = xdr_reserve_space(xdr, 8); |
3805 | if (!p) { | |
3806 | WARN_ON_ONCE(1); | |
3807 | return; | |
3808 | } | |
1da177e4 | 3809 | WRITE32(op->opnum); |
082d4bd7 | 3810 | post_err_offset = xdr->buf->len; |
1da177e4 | 3811 | |
695e12f8 BH |
3812 | if (op->opnum == OP_ILLEGAL) |
3813 | goto status; | |
3814 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || | |
3815 | !nfsd4_enc_ops[op->opnum]); | |
07d1f802 BF |
3816 | encoder = nfsd4_enc_ops[op->opnum]; |
3817 | op->status = encoder(resp, op->status, &op->u); | |
2825a7f9 BF |
3818 | xdr_commit_encode(xdr); |
3819 | ||
067e1ace | 3820 | /* nfsd4_check_resp_size guarantees enough room for error status */ |
5f4ab945 BF |
3821 | if (!op->status) { |
3822 | int space_needed = 0; | |
3823 | if (!nfsd4_last_compound_op(rqstp)) | |
3824 | space_needed = COMPOUND_ERR_SLACK_SPACE; | |
3825 | op->status = nfsd4_check_resp_size(resp, space_needed); | |
3826 | } | |
07d1f802 BF |
3827 | if (op->status == nfserr_resource || |
3828 | op->status == nfserr_rep_too_big || | |
3829 | op->status == nfserr_rep_too_big_to_cache) { | |
3830 | /* | |
3831 | * The operation may have already been encoded or | |
3832 | * partially encoded. No op returns anything additional | |
3833 | * in the case of one of these three errors, so we can | |
3834 | * just truncate back to after the status. But it's a | |
3835 | * bug if we had to do this on a non-idempotent op: | |
3836 | */ | |
3837 | warn_on_nonidempotent_op(op); | |
082d4bd7 | 3838 | xdr_truncate_encode(xdr, post_err_offset); |
07d1f802 | 3839 | } |
9411b1d4 | 3840 | if (so) { |
082d4bd7 BF |
3841 | int len = xdr->buf->len - post_err_offset; |
3842 | ||
9411b1d4 | 3843 | so->so_replay.rp_status = op->status; |
082d4bd7 BF |
3844 | so->so_replay.rp_buflen = len; |
3845 | read_bytes_from_xdr_buf(xdr->buf, post_err_offset, | |
3846 | so->so_replay.rp_buf, len); | |
9411b1d4 | 3847 | } |
695e12f8 | 3848 | status: |
082d4bd7 BF |
3849 | /* Note that op->status is already in network byte order: */ |
3850 | write_bytes_to_xdr_buf(xdr->buf, post_err_offset - 4, &op->status, 4); | |
1da177e4 LT |
3851 | } |
3852 | ||
3853 | /* | |
3854 | * Encode the reply stored in the stateowner reply cache | |
3855 | * | |
3856 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
3857 | * previously sent already encoded operation. | |
3858 | * | |
3859 | * called with nfs4_lock_state() held | |
3860 | */ | |
3861 | void | |
d0a381dd | 3862 | nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op) |
1da177e4 | 3863 | { |
bc749ca4 | 3864 | __be32 *p; |
1da177e4 LT |
3865 | struct nfs4_replay *rp = op->replay; |
3866 | ||
3867 | BUG_ON(!rp); | |
3868 | ||
d0a381dd BF |
3869 | p = xdr_reserve_space(xdr, 8 + rp->rp_buflen); |
3870 | if (!p) { | |
3871 | WARN_ON_ONCE(1); | |
3872 | return; | |
3873 | } | |
1da177e4 LT |
3874 | WRITE32(op->opnum); |
3875 | *p++ = rp->rp_status; /* already xdr'ed */ | |
1da177e4 | 3876 | |
1da177e4 | 3877 | WRITEMEM(rp->rp_buf, rp->rp_buflen); |
1da177e4 LT |
3878 | } |
3879 | ||
1da177e4 | 3880 | int |
2ebbc012 | 3881 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
3882 | { |
3883 | return xdr_ressize_check(rqstp, p); | |
3884 | } | |
3885 | ||
3e98abff | 3886 | int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp) |
1da177e4 | 3887 | { |
3e98abff BF |
3888 | struct svc_rqst *rqstp = rq; |
3889 | struct nfsd4_compoundargs *args = rqstp->rq_argp; | |
3890 | ||
1da177e4 LT |
3891 | if (args->ops != args->iops) { |
3892 | kfree(args->ops); | |
3893 | args->ops = args->iops; | |
3894 | } | |
f99d49ad JJ |
3895 | kfree(args->tmpp); |
3896 | args->tmpp = NULL; | |
1da177e4 LT |
3897 | while (args->to_free) { |
3898 | struct tmpbuf *tb = args->to_free; | |
3899 | args->to_free = tb->next; | |
3900 | tb->release(tb->buf); | |
3901 | kfree(tb); | |
3902 | } | |
3e98abff | 3903 | return 1; |
1da177e4 LT |
3904 | } |
3905 | ||
3906 | int | |
2ebbc012 | 3907 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 3908 | { |
e874f9f8 JL |
3909 | if (rqstp->rq_arg.head[0].iov_len % 4) { |
3910 | /* client is nuts */ | |
3911 | dprintk("%s: compound not properly padded! (peeraddr=%pISc xid=0x%x)", | |
3912 | __func__, svc_addr(rqstp), be32_to_cpu(rqstp->rq_xid)); | |
3913 | return 0; | |
3914 | } | |
1da177e4 LT |
3915 | args->p = p; |
3916 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
3917 | args->pagelist = rqstp->rq_arg.pages; | |
3918 | args->pagelen = rqstp->rq_arg.page_len; | |
3919 | args->tmpp = NULL; | |
3920 | args->to_free = NULL; | |
3921 | args->ops = args->iops; | |
3922 | args->rqstp = rqstp; | |
3923 | ||
3e98abff | 3924 | return !nfsd4_decode_compound(args); |
1da177e4 LT |
3925 | } |
3926 | ||
3927 | int | |
2ebbc012 | 3928 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
3929 | { |
3930 | /* | |
3931 | * All that remains is to write the tag and operation count... | |
3932 | */ | |
557ce264 | 3933 | struct nfsd4_compound_state *cs = &resp->cstate; |
6ac90391 BF |
3934 | struct xdr_buf *buf = resp->xdr.buf; |
3935 | ||
3936 | WARN_ON_ONCE(buf->len != buf->head[0].iov_len + buf->page_len + | |
3937 | buf->tail[0].iov_len); | |
dd97fdde | 3938 | |
2825a7f9 BF |
3939 | rqstp->rq_next_page = resp->xdr.page_ptr + 1; |
3940 | ||
1da177e4 LT |
3941 | p = resp->tagp; |
3942 | *p++ = htonl(resp->taglen); | |
3943 | memcpy(p, resp->tag, resp->taglen); | |
3944 | p += XDR_QUADLEN(resp->taglen); | |
3945 | *p++ = htonl(resp->opcnt); | |
3946 | ||
26c0c75e | 3947 | if (nfsd4_has_session(cs)) { |
f0f51f5c BF |
3948 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
3949 | struct nfs4_client *clp = cs->session->se_client; | |
26c0c75e BF |
3950 | if (cs->status != nfserr_replay_cache) { |
3951 | nfsd4_store_cache_entry(resp); | |
73e79482 | 3952 | cs->slot->sl_flags &= ~NFSD4_SLOT_INUSE; |
26c0c75e | 3953 | } |
d7682988 | 3954 | /* Renew the clientid on success and on replay */ |
f0f51f5c | 3955 | spin_lock(&nn->client_lock); |
221a6876 | 3956 | nfsd4_put_session(cs->session); |
f0f51f5c BF |
3957 | spin_unlock(&nn->client_lock); |
3958 | put_client_renew(clp); | |
da3846a2 | 3959 | } |
1da177e4 LT |
3960 | return 1; |
3961 | } | |
3962 | ||
3963 | /* | |
3964 | * Local variables: | |
3965 | * c-basic-offset: 8 | |
3966 | * End: | |
3967 | */ |