Commit | Line | Data |
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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. | |
1da177e4 LT |
34 | */ |
35 | ||
96bcad50 | 36 | #include <linux/file.h> |
5a0e3ad6 | 37 | #include <linux/slab.h> |
1da177e4 | 38 | #include <linux/namei.h> |
341eb184 | 39 | #include <linux/statfs.h> |
0733d213 | 40 | #include <linux/utsname.h> |
17456804 | 41 | #include <linux/pagemap.h> |
4796f457 | 42 | #include <linux/sunrpc/svcauth_gss.h> |
9a74af21 | 43 | |
2ca72e17 BF |
44 | #include "idmap.h" |
45 | #include "acl.h" | |
9a74af21 | 46 | #include "xdr4.h" |
0a3adade | 47 | #include "vfs.h" |
17456804 | 48 | #include "state.h" |
1091006c | 49 | #include "cache.h" |
3d733711 | 50 | #include "netns.h" |
9cf514cc | 51 | #include "pnfs.h" |
2ca72e17 | 52 | |
18032ca0 DQ |
53 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
54 | #include <linux/security.h> | |
55 | #endif | |
56 | ||
57 | ||
1da177e4 LT |
58 | #define NFSDDBG_FACILITY NFSDDBG_XDR |
59 | ||
5cf23dbb | 60 | const u32 nfsd_suppattrs[3][3] = { |
916d2d84 BF |
61 | {NFSD4_SUPPORTED_ATTRS_WORD0, |
62 | NFSD4_SUPPORTED_ATTRS_WORD1, | |
63 | NFSD4_SUPPORTED_ATTRS_WORD2}, | |
64 | ||
65 | {NFSD4_1_SUPPORTED_ATTRS_WORD0, | |
66 | NFSD4_1_SUPPORTED_ATTRS_WORD1, | |
67 | NFSD4_1_SUPPORTED_ATTRS_WORD2}, | |
68 | ||
69 | {NFSD4_1_SUPPORTED_ATTRS_WORD0, | |
70 | NFSD4_1_SUPPORTED_ATTRS_WORD1, | |
71 | NFSD4_2_SUPPORTED_ATTRS_WORD2}, | |
72 | }; | |
73 | ||
42ca0993 BF |
74 | /* |
75 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing | |
76 | * directory in order to indicate to the client that a filesystem boundary is present | |
77 | * We use a fixed fsid for a referral | |
78 | */ | |
79 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL | |
80 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL | |
81 | ||
b37ad28b | 82 | static __be32 |
a36b1725 | 83 | check_filename(char *str, int len) |
1da177e4 LT |
84 | { |
85 | int i; | |
86 | ||
87 | if (len == 0) | |
88 | return nfserr_inval; | |
89 | if (isdotent(str, len)) | |
a36b1725 | 90 | return nfserr_badname; |
1da177e4 LT |
91 | for (i = 0; i < len; i++) |
92 | if (str[i] == '/') | |
a36b1725 | 93 | return nfserr_badname; |
1da177e4 LT |
94 | return 0; |
95 | } | |
96 | ||
1da177e4 | 97 | #define DECODE_HEAD \ |
2ebbc012 | 98 | __be32 *p; \ |
b37ad28b | 99 | __be32 status |
1da177e4 LT |
100 | #define DECODE_TAIL \ |
101 | status = 0; \ | |
102 | out: \ | |
103 | return status; \ | |
104 | xdr_error: \ | |
817cb9d4 CL |
105 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
106 | __FILE__, __LINE__); \ | |
1da177e4 LT |
107 | status = nfserr_bad_xdr; \ |
108 | goto out | |
109 | ||
1da177e4 LT |
110 | #define READMEM(x,nbytes) do { \ |
111 | x = (char *)p; \ | |
112 | p += XDR_QUADLEN(nbytes); \ | |
113 | } while (0) | |
114 | #define SAVEMEM(x,nbytes) do { \ | |
115 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
116 | savemem(argp, p, nbytes) : \ | |
117 | (char *)p)) { \ | |
817cb9d4 CL |
118 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
119 | __FILE__, __LINE__); \ | |
1da177e4 LT |
120 | goto xdr_error; \ |
121 | } \ | |
122 | p += XDR_QUADLEN(nbytes); \ | |
123 | } while (0) | |
124 | #define COPYMEM(x,nbytes) do { \ | |
125 | memcpy((x), p, nbytes); \ | |
126 | p += XDR_QUADLEN(nbytes); \ | |
127 | } while (0) | |
128 | ||
129 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ | |
130 | #define READ_BUF(nbytes) do { \ | |
131 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ | |
132 | p = argp->p; \ | |
133 | argp->p += XDR_QUADLEN(nbytes); \ | |
134 | } else if (!(p = read_buf(argp, nbytes))) { \ | |
817cb9d4 CL |
135 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
136 | __FILE__, __LINE__); \ | |
1da177e4 LT |
137 | goto xdr_error; \ |
138 | } \ | |
139 | } while (0) | |
140 | ||
590b7431 BF |
141 | static void next_decode_page(struct nfsd4_compoundargs *argp) |
142 | { | |
590b7431 | 143 | argp->p = page_address(argp->pagelist[0]); |
365da4ad | 144 | argp->pagelist++; |
590b7431 | 145 | if (argp->pagelen < PAGE_SIZE) { |
fc788f64 | 146 | argp->end = argp->p + XDR_QUADLEN(argp->pagelen); |
590b7431 BF |
147 | argp->pagelen = 0; |
148 | } else { | |
149 | argp->end = argp->p + (PAGE_SIZE>>2); | |
150 | argp->pagelen -= PAGE_SIZE; | |
151 | } | |
152 | } | |
153 | ||
ca2a05aa | 154 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
1da177e4 LT |
155 | { |
156 | /* We want more bytes than seem to be available. | |
157 | * Maybe we need a new page, maybe we have just run out | |
158 | */ | |
ca2a05aa | 159 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
2ebbc012 | 160 | __be32 *p; |
eae03e2a CL |
161 | |
162 | if (argp->pagelen == 0) { | |
163 | struct kvec *vec = &argp->rqstp->rq_arg.tail[0]; | |
164 | ||
165 | if (!argp->tail) { | |
166 | argp->tail = true; | |
167 | avail = vec->iov_len; | |
168 | argp->p = vec->iov_base; | |
169 | argp->end = vec->iov_base + avail; | |
170 | } | |
171 | ||
172 | if (avail < nbytes) | |
173 | return NULL; | |
174 | ||
175 | p = argp->p; | |
176 | argp->p += XDR_QUADLEN(nbytes); | |
177 | return p; | |
178 | } | |
179 | ||
1da177e4 LT |
180 | if (avail + argp->pagelen < nbytes) |
181 | return NULL; | |
182 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ | |
183 | return NULL; | |
184 | /* ok, we can do it with the current plus the next page */ | |
185 | if (nbytes <= sizeof(argp->tmp)) | |
186 | p = argp->tmp; | |
187 | else { | |
f99d49ad | 188 | kfree(argp->tmpp); |
1da177e4 LT |
189 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
190 | if (!p) | |
191 | return NULL; | |
192 | ||
193 | } | |
ca2a05aa BF |
194 | /* |
195 | * The following memcpy is safe because read_buf is always | |
196 | * called with nbytes > avail, and the two cases above both | |
197 | * guarantee p points to at least nbytes bytes. | |
198 | */ | |
1da177e4 | 199 | memcpy(p, argp->p, avail); |
590b7431 | 200 | next_decode_page(argp); |
1da177e4 LT |
201 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); |
202 | argp->p += XDR_QUADLEN(nbytes - avail); | |
203 | return p; | |
204 | } | |
205 | ||
60adfc50 AA |
206 | static int zero_clientid(clientid_t *clid) |
207 | { | |
208 | return (clid->cl_boot == 0) && (clid->cl_id == 0); | |
209 | } | |
210 | ||
2d8498db | 211 | /** |
d5e23383 | 212 | * svcxdr_tmpalloc - allocate memory to be freed after compound processing |
ce043ac8 BF |
213 | * @argp: NFSv4 compound argument structure |
214 | * @p: pointer to be freed (with kfree()) | |
2d8498db CH |
215 | * |
216 | * Marks @p to be freed when processing the compound operation | |
217 | * described in @argp finishes. | |
218 | */ | |
d5e23383 BF |
219 | static void * |
220 | svcxdr_tmpalloc(struct nfsd4_compoundargs *argp, u32 len) | |
1da177e4 | 221 | { |
d5e23383 | 222 | struct svcxdr_tmpbuf *tb; |
1da177e4 | 223 | |
d5e23383 | 224 | tb = kmalloc(sizeof(*tb) + len, GFP_KERNEL); |
1da177e4 | 225 | if (!tb) |
d5e23383 | 226 | return NULL; |
1da177e4 LT |
227 | tb->next = argp->to_free; |
228 | argp->to_free = tb; | |
d5e23383 | 229 | return tb->buf; |
1da177e4 LT |
230 | } |
231 | ||
29c353b3 BF |
232 | /* |
233 | * For xdr strings that need to be passed to other kernel api's | |
234 | * as null-terminated strings. | |
235 | * | |
236 | * Note null-terminating in place usually isn't safe since the | |
237 | * buffer might end on a page boundary. | |
238 | */ | |
239 | static char * | |
240 | svcxdr_dupstr(struct nfsd4_compoundargs *argp, void *buf, u32 len) | |
241 | { | |
d5e23383 | 242 | char *p = svcxdr_tmpalloc(argp, len + 1); |
29c353b3 BF |
243 | |
244 | if (!p) | |
245 | return NULL; | |
246 | memcpy(p, buf, len); | |
247 | p[len] = '\0'; | |
29c353b3 | 248 | return p; |
1da177e4 LT |
249 | } |
250 | ||
2d8498db CH |
251 | /** |
252 | * savemem - duplicate a chunk of memory for later processing | |
253 | * @argp: NFSv4 compound argument structure to be freed with | |
254 | * @p: pointer to be duplicated | |
255 | * @nbytes: length to be duplicated | |
256 | * | |
257 | * Returns a pointer to a copy of @nbytes bytes of memory at @p | |
258 | * that are preserved until processing of the NFSv4 compound | |
259 | * operation described by @argp finishes. | |
260 | */ | |
2ebbc012 | 261 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
1da177e4 | 262 | { |
d5e23383 BF |
263 | void *ret; |
264 | ||
265 | ret = svcxdr_tmpalloc(argp, nbytes); | |
266 | if (!ret) | |
1da177e4 | 267 | return NULL; |
d5e23383 BF |
268 | memcpy(ret, p, nbytes); |
269 | return ret; | |
1da177e4 LT |
270 | } |
271 | ||
4c94e13e CH |
272 | /* |
273 | * We require the high 32 bits of 'seconds' to be 0, and | |
274 | * we ignore all 32 bits of 'nseconds'. | |
275 | */ | |
276 | static __be32 | |
277 | nfsd4_decode_time(struct nfsd4_compoundargs *argp, struct timespec *tv) | |
278 | { | |
279 | DECODE_HEAD; | |
280 | u64 sec; | |
281 | ||
282 | READ_BUF(12); | |
283 | p = xdr_decode_hyper(p, &sec); | |
284 | tv->tv_sec = sec; | |
285 | tv->tv_nsec = be32_to_cpup(p++); | |
286 | if (tv->tv_nsec >= (u32)1000000000) | |
287 | return nfserr_inval; | |
288 | ||
289 | DECODE_TAIL; | |
290 | } | |
291 | ||
b37ad28b | 292 | static __be32 |
1da177e4 LT |
293 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
294 | { | |
295 | u32 bmlen; | |
296 | DECODE_HEAD; | |
297 | ||
298 | bmval[0] = 0; | |
299 | bmval[1] = 0; | |
7e705706 | 300 | bmval[2] = 0; |
1da177e4 LT |
301 | |
302 | READ_BUF(4); | |
06553991 | 303 | bmlen = be32_to_cpup(p++); |
1da177e4 LT |
304 | if (bmlen > 1000) |
305 | goto xdr_error; | |
306 | ||
307 | READ_BUF(bmlen << 2); | |
308 | if (bmlen > 0) | |
06553991 | 309 | bmval[0] = be32_to_cpup(p++); |
1da177e4 | 310 | if (bmlen > 1) |
06553991 | 311 | bmval[1] = be32_to_cpup(p++); |
7e705706 | 312 | if (bmlen > 2) |
06553991 | 313 | bmval[2] = be32_to_cpup(p++); |
1da177e4 LT |
314 | |
315 | DECODE_TAIL; | |
316 | } | |
317 | ||
b37ad28b | 318 | static __be32 |
3c8e0316 | 319 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, |
18032ca0 | 320 | struct iattr *iattr, struct nfs4_acl **acl, |
47057abd | 321 | struct xdr_netobj *label, int *umask) |
1da177e4 LT |
322 | { |
323 | int expected_len, len = 0; | |
324 | u32 dummy32; | |
325 | char *buf; | |
326 | ||
327 | DECODE_HEAD; | |
328 | iattr->ia_valid = 0; | |
329 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
330 | return status; | |
331 | ||
e864c189 BF |
332 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
333 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 | |
334 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) { | |
335 | if (nfsd_attrs_supported(argp->minorversion, bmval)) | |
336 | return nfserr_inval; | |
337 | return nfserr_attrnotsupp; | |
338 | } | |
339 | ||
1da177e4 | 340 | READ_BUF(4); |
06553991 | 341 | expected_len = be32_to_cpup(p++); |
1da177e4 LT |
342 | |
343 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
344 | READ_BUF(8); | |
345 | len += 8; | |
542d1ab3 | 346 | p = xdr_decode_hyper(p, &iattr->ia_size); |
1da177e4 LT |
347 | iattr->ia_valid |= ATTR_SIZE; |
348 | } | |
349 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
64a817cf | 350 | u32 nace; |
28e05dd8 | 351 | struct nfs4_ace *ace; |
1da177e4 LT |
352 | |
353 | READ_BUF(4); len += 4; | |
06553991 | 354 | nace = be32_to_cpup(p++); |
1da177e4 | 355 | |
28e05dd8 | 356 | if (nace > NFS4_ACL_MAX) |
798df338 | 357 | return nfserr_fbig; |
28e05dd8 | 358 | |
d5e23383 | 359 | *acl = svcxdr_tmpalloc(argp, nfs4_acl_bytes(nace)); |
eba1c99c KM |
360 | if (*acl == NULL) |
361 | return nfserr_jukebox; | |
362 | ||
28e05dd8 BF |
363 | (*acl)->naces = nace; |
364 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { | |
1da177e4 | 365 | READ_BUF(16); len += 16; |
06553991 BF |
366 | ace->type = be32_to_cpup(p++); |
367 | ace->flag = be32_to_cpup(p++); | |
368 | ace->access_mask = be32_to_cpup(p++); | |
369 | dummy32 = be32_to_cpup(p++); | |
1da177e4 LT |
370 | READ_BUF(dummy32); |
371 | len += XDR_QUADLEN(dummy32) << 2; | |
372 | READMEM(buf, dummy32); | |
28e05dd8 | 373 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
3c726023 | 374 | status = nfs_ok; |
28e05dd8 | 375 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ab8e4aee | 376 | ; |
28e05dd8 | 377 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
3c726023 | 378 | status = nfsd_map_name_to_gid(argp->rqstp, |
ab8e4aee | 379 | buf, dummy32, &ace->who_gid); |
1da177e4 | 380 | else |
3c726023 | 381 | status = nfsd_map_name_to_uid(argp->rqstp, |
ab8e4aee | 382 | buf, dummy32, &ace->who_uid); |
3c726023 BF |
383 | if (status) |
384 | return status; | |
1da177e4 LT |
385 | } |
386 | } else | |
387 | *acl = NULL; | |
388 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
389 | READ_BUF(4); | |
390 | len += 4; | |
06553991 | 391 | iattr->ia_mode = be32_to_cpup(p++); |
1da177e4 LT |
392 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); |
393 | iattr->ia_valid |= ATTR_MODE; | |
394 | } | |
395 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
396 | READ_BUF(4); | |
397 | len += 4; | |
06553991 | 398 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
399 | READ_BUF(dummy32); |
400 | len += (XDR_QUADLEN(dummy32) << 2); | |
401 | READMEM(buf, dummy32); | |
47c85291 N |
402 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
403 | return status; | |
1da177e4 LT |
404 | iattr->ia_valid |= ATTR_UID; |
405 | } | |
406 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
407 | READ_BUF(4); | |
408 | len += 4; | |
06553991 | 409 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
410 | READ_BUF(dummy32); |
411 | len += (XDR_QUADLEN(dummy32) << 2); | |
412 | READMEM(buf, dummy32); | |
47c85291 N |
413 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
414 | return status; | |
1da177e4 LT |
415 | iattr->ia_valid |= ATTR_GID; |
416 | } | |
417 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
418 | READ_BUF(4); | |
419 | len += 4; | |
06553991 | 420 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
421 | switch (dummy32) { |
422 | case NFS4_SET_TO_CLIENT_TIME: | |
1da177e4 | 423 | len += 12; |
4c94e13e CH |
424 | status = nfsd4_decode_time(argp, &iattr->ia_atime); |
425 | if (status) | |
426 | return status; | |
1da177e4 LT |
427 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); |
428 | break; | |
429 | case NFS4_SET_TO_SERVER_TIME: | |
430 | iattr->ia_valid |= ATTR_ATIME; | |
431 | break; | |
432 | default: | |
433 | goto xdr_error; | |
434 | } | |
435 | } | |
1da177e4 LT |
436 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
437 | READ_BUF(4); | |
438 | len += 4; | |
06553991 | 439 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
440 | switch (dummy32) { |
441 | case NFS4_SET_TO_CLIENT_TIME: | |
1da177e4 | 442 | len += 12; |
4c94e13e CH |
443 | status = nfsd4_decode_time(argp, &iattr->ia_mtime); |
444 | if (status) | |
445 | return status; | |
1da177e4 LT |
446 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); |
447 | break; | |
448 | case NFS4_SET_TO_SERVER_TIME: | |
449 | iattr->ia_valid |= ATTR_MTIME; | |
450 | break; | |
451 | default: | |
452 | goto xdr_error; | |
453 | } | |
454 | } | |
18032ca0 DQ |
455 | |
456 | label->len = 0; | |
457 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL | |
458 | if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) { | |
459 | READ_BUF(4); | |
460 | len += 4; | |
06553991 | 461 | dummy32 = be32_to_cpup(p++); /* lfs: we don't use it */ |
18032ca0 DQ |
462 | READ_BUF(4); |
463 | len += 4; | |
06553991 | 464 | dummy32 = be32_to_cpup(p++); /* pi: we don't use it either */ |
18032ca0 DQ |
465 | READ_BUF(4); |
466 | len += 4; | |
06553991 | 467 | dummy32 = be32_to_cpup(p++); |
18032ca0 | 468 | READ_BUF(dummy32); |
1ec8c0c4 | 469 | if (dummy32 > NFS4_MAXLABELLEN) |
18032ca0 DQ |
470 | return nfserr_badlabel; |
471 | len += (XDR_QUADLEN(dummy32) << 2); | |
472 | READMEM(buf, dummy32); | |
29c353b3 BF |
473 | label->len = dummy32; |
474 | label->data = svcxdr_dupstr(argp, buf, dummy32); | |
18032ca0 DQ |
475 | if (!label->data) |
476 | return nfserr_jukebox; | |
18032ca0 DQ |
477 | } |
478 | #endif | |
47057abd AG |
479 | if (bmval[2] & FATTR4_WORD2_MODE_UMASK) { |
480 | if (!umask) | |
481 | goto xdr_error; | |
482 | READ_BUF(8); | |
483 | len += 8; | |
484 | dummy32 = be32_to_cpup(p++); | |
485 | iattr->ia_mode = dummy32 & (S_IFMT | S_IALLUGO); | |
486 | dummy32 = be32_to_cpup(p++); | |
487 | *umask = dummy32 & S_IRWXUGO; | |
488 | iattr->ia_valid |= ATTR_MODE; | |
489 | } | |
e864c189 | 490 | if (len != expected_len) |
1da177e4 LT |
491 | goto xdr_error; |
492 | ||
493 | DECODE_TAIL; | |
1da177e4 LT |
494 | } |
495 | ||
e31a1b66 BH |
496 | static __be32 |
497 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
498 | { | |
499 | DECODE_HEAD; | |
500 | ||
501 | READ_BUF(sizeof(stateid_t)); | |
06553991 | 502 | sid->si_generation = be32_to_cpup(p++); |
e31a1b66 BH |
503 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); |
504 | ||
505 | DECODE_TAIL; | |
506 | } | |
507 | ||
b37ad28b | 508 | static __be32 |
1da177e4 LT |
509 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
510 | { | |
511 | DECODE_HEAD; | |
512 | ||
513 | READ_BUF(4); | |
06553991 | 514 | access->ac_req_access = be32_to_cpup(p++); |
1da177e4 LT |
515 | |
516 | DECODE_TAIL; | |
517 | } | |
518 | ||
acb2887e BF |
519 | static __be32 nfsd4_decode_cb_sec(struct nfsd4_compoundargs *argp, struct nfsd4_cb_sec *cbs) |
520 | { | |
521 | DECODE_HEAD; | |
12fc3e92 | 522 | u32 dummy, uid, gid; |
acb2887e BF |
523 | char *machine_name; |
524 | int i; | |
525 | int nr_secflavs; | |
526 | ||
527 | /* callback_sec_params4 */ | |
528 | READ_BUF(4); | |
06553991 | 529 | nr_secflavs = be32_to_cpup(p++); |
57569a70 BF |
530 | if (nr_secflavs) |
531 | cbs->flavor = (u32)(-1); | |
532 | else | |
533 | /* Is this legal? Be generous, take it to mean AUTH_NONE: */ | |
534 | cbs->flavor = 0; | |
acb2887e BF |
535 | for (i = 0; i < nr_secflavs; ++i) { |
536 | READ_BUF(4); | |
06553991 | 537 | dummy = be32_to_cpup(p++); |
acb2887e BF |
538 | switch (dummy) { |
539 | case RPC_AUTH_NULL: | |
540 | /* Nothing to read */ | |
12fc3e92 BF |
541 | if (cbs->flavor == (u32)(-1)) |
542 | cbs->flavor = RPC_AUTH_NULL; | |
acb2887e BF |
543 | break; |
544 | case RPC_AUTH_UNIX: | |
545 | READ_BUF(8); | |
546 | /* stamp */ | |
06553991 | 547 | dummy = be32_to_cpup(p++); |
acb2887e BF |
548 | |
549 | /* machine name */ | |
06553991 | 550 | dummy = be32_to_cpup(p++); |
acb2887e BF |
551 | READ_BUF(dummy); |
552 | SAVEMEM(machine_name, dummy); | |
553 | ||
554 | /* uid, gid */ | |
555 | READ_BUF(8); | |
06553991 BF |
556 | uid = be32_to_cpup(p++); |
557 | gid = be32_to_cpup(p++); | |
acb2887e BF |
558 | |
559 | /* more gids */ | |
560 | READ_BUF(4); | |
06553991 | 561 | dummy = be32_to_cpup(p++); |
acb2887e | 562 | READ_BUF(dummy * 4); |
12fc3e92 | 563 | if (cbs->flavor == (u32)(-1)) { |
03bc6d1c EB |
564 | kuid_t kuid = make_kuid(&init_user_ns, uid); |
565 | kgid_t kgid = make_kgid(&init_user_ns, gid); | |
566 | if (uid_valid(kuid) && gid_valid(kgid)) { | |
567 | cbs->uid = kuid; | |
568 | cbs->gid = kgid; | |
569 | cbs->flavor = RPC_AUTH_UNIX; | |
570 | } else { | |
571 | dprintk("RPC_AUTH_UNIX with invalid" | |
572 | "uid or gid ignoring!\n"); | |
573 | } | |
12fc3e92 | 574 | } |
acb2887e BF |
575 | break; |
576 | case RPC_AUTH_GSS: | |
577 | dprintk("RPC_AUTH_GSS callback secflavor " | |
578 | "not supported!\n"); | |
579 | READ_BUF(8); | |
580 | /* gcbp_service */ | |
06553991 | 581 | dummy = be32_to_cpup(p++); |
acb2887e | 582 | /* gcbp_handle_from_server */ |
06553991 | 583 | dummy = be32_to_cpup(p++); |
acb2887e BF |
584 | READ_BUF(dummy); |
585 | p += XDR_QUADLEN(dummy); | |
586 | /* gcbp_handle_from_client */ | |
587 | READ_BUF(4); | |
06553991 | 588 | dummy = be32_to_cpup(p++); |
acb2887e BF |
589 | READ_BUF(dummy); |
590 | break; | |
591 | default: | |
592 | dprintk("Illegal callback secflavor\n"); | |
593 | return nfserr_inval; | |
594 | } | |
595 | } | |
596 | DECODE_TAIL; | |
597 | } | |
598 | ||
cb73a9f4 BF |
599 | static __be32 nfsd4_decode_backchannel_ctl(struct nfsd4_compoundargs *argp, struct nfsd4_backchannel_ctl *bc) |
600 | { | |
601 | DECODE_HEAD; | |
602 | ||
603 | READ_BUF(4); | |
06553991 | 604 | bc->bc_cb_program = be32_to_cpup(p++); |
cb73a9f4 BF |
605 | nfsd4_decode_cb_sec(argp, &bc->bc_cb_sec); |
606 | ||
607 | DECODE_TAIL; | |
608 | } | |
609 | ||
1d1bc8f2 BF |
610 | static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) |
611 | { | |
612 | DECODE_HEAD; | |
1d1bc8f2 BF |
613 | |
614 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 8); | |
615 | COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
06553991 | 616 | bcts->dir = be32_to_cpup(p++); |
6ce2357f BS |
617 | /* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker |
618 | * could help us figure out we should be using it. */ | |
1d1bc8f2 BF |
619 | DECODE_TAIL; |
620 | } | |
621 | ||
b37ad28b | 622 | static __be32 |
1da177e4 LT |
623 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
624 | { | |
625 | DECODE_HEAD; | |
626 | ||
e31a1b66 | 627 | READ_BUF(4); |
06553991 | 628 | close->cl_seqid = be32_to_cpup(p++); |
e31a1b66 | 629 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
1da177e4 LT |
630 | |
631 | DECODE_TAIL; | |
632 | } | |
633 | ||
634 | ||
b37ad28b | 635 | static __be32 |
1da177e4 LT |
636 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
637 | { | |
638 | DECODE_HEAD; | |
639 | ||
640 | READ_BUF(12); | |
542d1ab3 | 641 | p = xdr_decode_hyper(p, &commit->co_offset); |
06553991 | 642 | commit->co_count = be32_to_cpup(p++); |
1da177e4 LT |
643 | |
644 | DECODE_TAIL; | |
645 | } | |
646 | ||
b37ad28b | 647 | static __be32 |
1da177e4 LT |
648 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
649 | { | |
650 | DECODE_HEAD; | |
651 | ||
652 | READ_BUF(4); | |
06553991 | 653 | create->cr_type = be32_to_cpup(p++); |
1da177e4 LT |
654 | switch (create->cr_type) { |
655 | case NF4LNK: | |
656 | READ_BUF(4); | |
7fb84306 BF |
657 | create->cr_datalen = be32_to_cpup(p++); |
658 | READ_BUF(create->cr_datalen); | |
29c353b3 | 659 | create->cr_data = svcxdr_dupstr(argp, p, create->cr_datalen); |
7fb84306 | 660 | if (!create->cr_data) |
76f47128 | 661 | return nfserr_jukebox; |
1da177e4 LT |
662 | break; |
663 | case NF4BLK: | |
664 | case NF4CHR: | |
665 | READ_BUF(8); | |
06553991 BF |
666 | create->cr_specdata1 = be32_to_cpup(p++); |
667 | create->cr_specdata2 = be32_to_cpup(p++); | |
1da177e4 LT |
668 | break; |
669 | case NF4SOCK: | |
670 | case NF4FIFO: | |
671 | case NF4DIR: | |
672 | default: | |
673 | break; | |
674 | } | |
675 | ||
676 | READ_BUF(4); | |
06553991 | 677 | create->cr_namelen = be32_to_cpup(p++); |
1da177e4 LT |
678 | READ_BUF(create->cr_namelen); |
679 | SAVEMEM(create->cr_name, create->cr_namelen); | |
a36b1725 | 680 | if ((status = check_filename(create->cr_name, create->cr_namelen))) |
1da177e4 LT |
681 | return status; |
682 | ||
3c8e0316 | 683 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
47057abd | 684 | &create->cr_acl, &create->cr_label, |
9a0a5098 | 685 | &create->cr_umask); |
c0d6fc8a | 686 | if (status) |
1da177e4 LT |
687 | goto out; |
688 | ||
689 | DECODE_TAIL; | |
690 | } | |
691 | ||
b37ad28b | 692 | static inline __be32 |
1da177e4 LT |
693 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
694 | { | |
e31a1b66 | 695 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
1da177e4 LT |
696 | } |
697 | ||
b37ad28b | 698 | static inline __be32 |
1da177e4 LT |
699 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
700 | { | |
701 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
702 | } | |
703 | ||
b37ad28b | 704 | static __be32 |
1da177e4 LT |
705 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
706 | { | |
707 | DECODE_HEAD; | |
708 | ||
709 | READ_BUF(4); | |
06553991 | 710 | link->li_namelen = be32_to_cpup(p++); |
1da177e4 LT |
711 | READ_BUF(link->li_namelen); |
712 | SAVEMEM(link->li_name, link->li_namelen); | |
a36b1725 | 713 | if ((status = check_filename(link->li_name, link->li_namelen))) |
1da177e4 LT |
714 | return status; |
715 | ||
716 | DECODE_TAIL; | |
717 | } | |
718 | ||
b37ad28b | 719 | static __be32 |
1da177e4 LT |
720 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
721 | { | |
722 | DECODE_HEAD; | |
723 | ||
1da177e4 LT |
724 | /* |
725 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
726 | */ | |
727 | READ_BUF(28); | |
06553991 | 728 | lock->lk_type = be32_to_cpup(p++); |
1da177e4 LT |
729 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) |
730 | goto xdr_error; | |
06553991 | 731 | lock->lk_reclaim = be32_to_cpup(p++); |
542d1ab3 BF |
732 | p = xdr_decode_hyper(p, &lock->lk_offset); |
733 | p = xdr_decode_hyper(p, &lock->lk_length); | |
06553991 | 734 | lock->lk_is_new = be32_to_cpup(p++); |
1da177e4 LT |
735 | |
736 | if (lock->lk_is_new) { | |
e31a1b66 | 737 | READ_BUF(4); |
06553991 | 738 | lock->lk_new_open_seqid = be32_to_cpup(p++); |
e31a1b66 BH |
739 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
740 | if (status) | |
741 | return status; | |
742 | READ_BUF(8 + sizeof(clientid_t)); | |
06553991 | 743 | lock->lk_new_lock_seqid = be32_to_cpup(p++); |
1da177e4 | 744 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); |
06553991 | 745 | lock->lk_new_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
746 | READ_BUF(lock->lk_new_owner.len); |
747 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
748 | } else { | |
e31a1b66 BH |
749 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
750 | if (status) | |
751 | return status; | |
752 | READ_BUF(4); | |
06553991 | 753 | lock->lk_old_lock_seqid = be32_to_cpup(p++); |
1da177e4 LT |
754 | } |
755 | ||
756 | DECODE_TAIL; | |
757 | } | |
758 | ||
b37ad28b | 759 | static __be32 |
1da177e4 LT |
760 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
761 | { | |
762 | DECODE_HEAD; | |
763 | ||
764 | READ_BUF(32); | |
06553991 | 765 | lockt->lt_type = be32_to_cpup(p++); |
1da177e4 LT |
766 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) |
767 | goto xdr_error; | |
542d1ab3 BF |
768 | p = xdr_decode_hyper(p, &lockt->lt_offset); |
769 | p = xdr_decode_hyper(p, &lockt->lt_length); | |
1da177e4 | 770 | COPYMEM(&lockt->lt_clientid, 8); |
06553991 | 771 | lockt->lt_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
772 | READ_BUF(lockt->lt_owner.len); |
773 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
774 | ||
775 | DECODE_TAIL; | |
776 | } | |
777 | ||
b37ad28b | 778 | static __be32 |
1da177e4 LT |
779 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
780 | { | |
781 | DECODE_HEAD; | |
782 | ||
e31a1b66 | 783 | READ_BUF(8); |
06553991 | 784 | locku->lu_type = be32_to_cpup(p++); |
1da177e4 LT |
785 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) |
786 | goto xdr_error; | |
06553991 | 787 | locku->lu_seqid = be32_to_cpup(p++); |
e31a1b66 BH |
788 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
789 | if (status) | |
790 | return status; | |
791 | READ_BUF(16); | |
542d1ab3 BF |
792 | p = xdr_decode_hyper(p, &locku->lu_offset); |
793 | p = xdr_decode_hyper(p, &locku->lu_length); | |
1da177e4 LT |
794 | |
795 | DECODE_TAIL; | |
796 | } | |
797 | ||
b37ad28b | 798 | static __be32 |
1da177e4 LT |
799 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
800 | { | |
801 | DECODE_HEAD; | |
802 | ||
803 | READ_BUF(4); | |
06553991 | 804 | lookup->lo_len = be32_to_cpup(p++); |
1da177e4 LT |
805 | READ_BUF(lookup->lo_len); |
806 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
a36b1725 | 807 | if ((status = check_filename(lookup->lo_name, lookup->lo_len))) |
1da177e4 LT |
808 | return status; |
809 | ||
810 | DECODE_TAIL; | |
811 | } | |
812 | ||
2c8bd7e0 | 813 | static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when) |
04f9e664 BF |
814 | { |
815 | __be32 *p; | |
816 | u32 w; | |
817 | ||
818 | READ_BUF(4); | |
06553991 | 819 | w = be32_to_cpup(p++); |
2c8bd7e0 BH |
820 | *share_access = w & NFS4_SHARE_ACCESS_MASK; |
821 | *deleg_want = w & NFS4_SHARE_WANT_MASK; | |
822 | if (deleg_when) | |
823 | *deleg_when = w & NFS4_SHARE_WHEN_MASK; | |
824 | ||
04f9e664 BF |
825 | switch (w & NFS4_SHARE_ACCESS_MASK) { |
826 | case NFS4_SHARE_ACCESS_READ: | |
827 | case NFS4_SHARE_ACCESS_WRITE: | |
828 | case NFS4_SHARE_ACCESS_BOTH: | |
829 | break; | |
830 | default: | |
831 | return nfserr_bad_xdr; | |
832 | } | |
fc0d14fe | 833 | w &= ~NFS4_SHARE_ACCESS_MASK; |
04f9e664 BF |
834 | if (!w) |
835 | return nfs_ok; | |
836 | if (!argp->minorversion) | |
837 | return nfserr_bad_xdr; | |
838 | switch (w & NFS4_SHARE_WANT_MASK) { | |
839 | case NFS4_SHARE_WANT_NO_PREFERENCE: | |
840 | case NFS4_SHARE_WANT_READ_DELEG: | |
841 | case NFS4_SHARE_WANT_WRITE_DELEG: | |
842 | case NFS4_SHARE_WANT_ANY_DELEG: | |
843 | case NFS4_SHARE_WANT_NO_DELEG: | |
844 | case NFS4_SHARE_WANT_CANCEL: | |
845 | break; | |
846 | default: | |
847 | return nfserr_bad_xdr; | |
848 | } | |
92bac8c5 | 849 | w &= ~NFS4_SHARE_WANT_MASK; |
04f9e664 BF |
850 | if (!w) |
851 | return nfs_ok; | |
2c8bd7e0 BH |
852 | |
853 | if (!deleg_when) /* open_downgrade */ | |
854 | return nfserr_inval; | |
04f9e664 BF |
855 | switch (w) { |
856 | case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL: | |
857 | case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED: | |
c668fc6d BH |
858 | case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL | |
859 | NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED): | |
04f9e664 BF |
860 | return nfs_ok; |
861 | } | |
862 | xdr_error: | |
863 | return nfserr_bad_xdr; | |
864 | } | |
865 | ||
866 | static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x) | |
867 | { | |
868 | __be32 *p; | |
869 | ||
870 | READ_BUF(4); | |
06553991 | 871 | *x = be32_to_cpup(p++); |
04f9e664 | 872 | /* Note: unlinke access bits, deny bits may be zero. */ |
01cd4afa | 873 | if (*x & ~NFS4_SHARE_DENY_BOTH) |
04f9e664 BF |
874 | return nfserr_bad_xdr; |
875 | return nfs_ok; | |
876 | xdr_error: | |
877 | return nfserr_bad_xdr; | |
878 | } | |
879 | ||
a084daf5 BF |
880 | static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o) |
881 | { | |
882 | __be32 *p; | |
883 | ||
884 | READ_BUF(4); | |
06553991 | 885 | o->len = be32_to_cpup(p++); |
a084daf5 BF |
886 | |
887 | if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT) | |
888 | return nfserr_bad_xdr; | |
889 | ||
890 | READ_BUF(o->len); | |
891 | SAVEMEM(o->data, o->len); | |
892 | return nfs_ok; | |
893 | xdr_error: | |
894 | return nfserr_bad_xdr; | |
895 | } | |
896 | ||
b37ad28b | 897 | static __be32 |
1da177e4 LT |
898 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
899 | { | |
900 | DECODE_HEAD; | |
2c8bd7e0 | 901 | u32 dummy; |
1da177e4 LT |
902 | |
903 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
904 | open->op_iattr.ia_valid = 0; | |
fe0750e5 | 905 | open->op_openowner = NULL; |
1da177e4 | 906 | |
9d313b17 | 907 | open->op_xdr_error = 0; |
1da177e4 | 908 | /* seqid, share_access, share_deny, clientid, ownerlen */ |
04f9e664 | 909 | READ_BUF(4); |
06553991 | 910 | open->op_seqid = be32_to_cpup(p++); |
2c8bd7e0 BH |
911 | /* decode, yet ignore deleg_when until supported */ |
912 | status = nfsd4_decode_share_access(argp, &open->op_share_access, | |
913 | &open->op_deleg_want, &dummy); | |
04f9e664 BF |
914 | if (status) |
915 | goto xdr_error; | |
916 | status = nfsd4_decode_share_deny(argp, &open->op_share_deny); | |
917 | if (status) | |
918 | goto xdr_error; | |
a084daf5 | 919 | READ_BUF(sizeof(clientid_t)); |
1da177e4 | 920 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); |
a084daf5 BF |
921 | status = nfsd4_decode_opaque(argp, &open->op_owner); |
922 | if (status) | |
923 | goto xdr_error; | |
924 | READ_BUF(4); | |
06553991 | 925 | open->op_create = be32_to_cpup(p++); |
1da177e4 LT |
926 | switch (open->op_create) { |
927 | case NFS4_OPEN_NOCREATE: | |
928 | break; | |
929 | case NFS4_OPEN_CREATE: | |
930 | READ_BUF(4); | |
06553991 | 931 | open->op_createmode = be32_to_cpup(p++); |
1da177e4 LT |
932 | switch (open->op_createmode) { |
933 | case NFS4_CREATE_UNCHECKED: | |
934 | case NFS4_CREATE_GUARDED: | |
c0d6fc8a | 935 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
47057abd | 936 | &open->op_iattr, &open->op_acl, &open->op_label, |
9a0a5098 | 937 | &open->op_umask); |
c0d6fc8a | 938 | if (status) |
1da177e4 LT |
939 | goto out; |
940 | break; | |
941 | case NFS4_CREATE_EXCLUSIVE: | |
ab4684d1 CL |
942 | READ_BUF(NFS4_VERIFIER_SIZE); |
943 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 944 | break; |
79fb54ab BH |
945 | case NFS4_CREATE_EXCLUSIVE4_1: |
946 | if (argp->minorversion < 1) | |
947 | goto xdr_error; | |
ab4684d1 CL |
948 | READ_BUF(NFS4_VERIFIER_SIZE); |
949 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
79fb54ab | 950 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
47057abd | 951 | &open->op_iattr, &open->op_acl, &open->op_label, |
9a0a5098 | 952 | &open->op_umask); |
79fb54ab BH |
953 | if (status) |
954 | goto out; | |
955 | break; | |
1da177e4 LT |
956 | default: |
957 | goto xdr_error; | |
958 | } | |
959 | break; | |
960 | default: | |
961 | goto xdr_error; | |
962 | } | |
963 | ||
964 | /* open_claim */ | |
965 | READ_BUF(4); | |
06553991 | 966 | open->op_claim_type = be32_to_cpup(p++); |
1da177e4 LT |
967 | switch (open->op_claim_type) { |
968 | case NFS4_OPEN_CLAIM_NULL: | |
969 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
970 | READ_BUF(4); | |
06553991 | 971 | open->op_fname.len = be32_to_cpup(p++); |
1da177e4 LT |
972 | READ_BUF(open->op_fname.len); |
973 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 974 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
975 | return status; |
976 | break; | |
977 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
978 | READ_BUF(4); | |
06553991 | 979 | open->op_delegate_type = be32_to_cpup(p++); |
1da177e4 LT |
980 | break; |
981 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
e31a1b66 BH |
982 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
983 | if (status) | |
984 | return status; | |
985 | READ_BUF(4); | |
06553991 | 986 | open->op_fname.len = be32_to_cpup(p++); |
1da177e4 LT |
987 | READ_BUF(open->op_fname.len); |
988 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 989 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
990 | return status; |
991 | break; | |
8b289b2c BF |
992 | case NFS4_OPEN_CLAIM_FH: |
993 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
994 | if (argp->minorversion < 1) | |
995 | goto xdr_error; | |
996 | /* void */ | |
997 | break; | |
998 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
999 | if (argp->minorversion < 1) | |
1000 | goto xdr_error; | |
1001 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); | |
1002 | if (status) | |
1003 | return status; | |
1004 | break; | |
1da177e4 LT |
1005 | default: |
1006 | goto xdr_error; | |
1007 | } | |
1008 | ||
1009 | DECODE_TAIL; | |
1010 | } | |
1011 | ||
b37ad28b | 1012 | static __be32 |
1da177e4 LT |
1013 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
1014 | { | |
1015 | DECODE_HEAD; | |
e1a90ebd AS |
1016 | |
1017 | if (argp->minorversion >= 1) | |
1018 | return nfserr_notsupp; | |
1019 | ||
e31a1b66 BH |
1020 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
1021 | if (status) | |
1022 | return status; | |
1023 | READ_BUF(4); | |
06553991 | 1024 | open_conf->oc_seqid = be32_to_cpup(p++); |
e1a90ebd | 1025 | |
1da177e4 LT |
1026 | DECODE_TAIL; |
1027 | } | |
1028 | ||
b37ad28b | 1029 | static __be32 |
1da177e4 LT |
1030 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
1031 | { | |
1032 | DECODE_HEAD; | |
1033 | ||
e31a1b66 BH |
1034 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
1035 | if (status) | |
1036 | return status; | |
04f9e664 | 1037 | READ_BUF(4); |
06553991 | 1038 | open_down->od_seqid = be32_to_cpup(p++); |
2c8bd7e0 BH |
1039 | status = nfsd4_decode_share_access(argp, &open_down->od_share_access, |
1040 | &open_down->od_deleg_want, NULL); | |
04f9e664 BF |
1041 | if (status) |
1042 | return status; | |
1043 | status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny); | |
1044 | if (status) | |
1045 | return status; | |
1da177e4 LT |
1046 | DECODE_TAIL; |
1047 | } | |
1048 | ||
b37ad28b | 1049 | static __be32 |
1da177e4 LT |
1050 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
1051 | { | |
1052 | DECODE_HEAD; | |
1053 | ||
1054 | READ_BUF(4); | |
06553991 | 1055 | putfh->pf_fhlen = be32_to_cpup(p++); |
1da177e4 LT |
1056 | if (putfh->pf_fhlen > NFS4_FHSIZE) |
1057 | goto xdr_error; | |
1058 | READ_BUF(putfh->pf_fhlen); | |
1059 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
1060 | ||
1061 | DECODE_TAIL; | |
1062 | } | |
1063 | ||
e1a90ebd AS |
1064 | static __be32 |
1065 | nfsd4_decode_putpubfh(struct nfsd4_compoundargs *argp, void *p) | |
1066 | { | |
1067 | if (argp->minorversion == 0) | |
1068 | return nfs_ok; | |
1069 | return nfserr_notsupp; | |
1070 | } | |
1071 | ||
b37ad28b | 1072 | static __be32 |
1da177e4 LT |
1073 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
1074 | { | |
1075 | DECODE_HEAD; | |
1076 | ||
e31a1b66 BH |
1077 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
1078 | if (status) | |
1079 | return status; | |
1080 | READ_BUF(12); | |
542d1ab3 | 1081 | p = xdr_decode_hyper(p, &read->rd_offset); |
06553991 | 1082 | read->rd_length = be32_to_cpup(p++); |
1da177e4 LT |
1083 | |
1084 | DECODE_TAIL; | |
1085 | } | |
1086 | ||
b37ad28b | 1087 | static __be32 |
1da177e4 LT |
1088 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
1089 | { | |
1090 | DECODE_HEAD; | |
1091 | ||
1092 | READ_BUF(24); | |
542d1ab3 | 1093 | p = xdr_decode_hyper(p, &readdir->rd_cookie); |
1da177e4 | 1094 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); |
06553991 BF |
1095 | readdir->rd_dircount = be32_to_cpup(p++); |
1096 | readdir->rd_maxcount = be32_to_cpup(p++); | |
1da177e4 LT |
1097 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) |
1098 | goto out; | |
1099 | ||
1100 | DECODE_TAIL; | |
1101 | } | |
1102 | ||
b37ad28b | 1103 | static __be32 |
1da177e4 LT |
1104 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
1105 | { | |
1106 | DECODE_HEAD; | |
1107 | ||
1108 | READ_BUF(4); | |
06553991 | 1109 | remove->rm_namelen = be32_to_cpup(p++); |
1da177e4 LT |
1110 | READ_BUF(remove->rm_namelen); |
1111 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
a36b1725 | 1112 | if ((status = check_filename(remove->rm_name, remove->rm_namelen))) |
1da177e4 LT |
1113 | return status; |
1114 | ||
1115 | DECODE_TAIL; | |
1116 | } | |
1117 | ||
b37ad28b | 1118 | static __be32 |
1da177e4 LT |
1119 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
1120 | { | |
1121 | DECODE_HEAD; | |
1122 | ||
1123 | READ_BUF(4); | |
06553991 | 1124 | rename->rn_snamelen = be32_to_cpup(p++); |
4aed9c46 | 1125 | READ_BUF(rename->rn_snamelen); |
1da177e4 | 1126 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); |
4aed9c46 | 1127 | READ_BUF(4); |
06553991 | 1128 | rename->rn_tnamelen = be32_to_cpup(p++); |
1da177e4 LT |
1129 | READ_BUF(rename->rn_tnamelen); |
1130 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
a36b1725 | 1131 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen))) |
1da177e4 | 1132 | return status; |
a36b1725 | 1133 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen))) |
1da177e4 LT |
1134 | return status; |
1135 | ||
1136 | DECODE_TAIL; | |
1137 | } | |
1138 | ||
b37ad28b | 1139 | static __be32 |
1da177e4 LT |
1140 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
1141 | { | |
1142 | DECODE_HEAD; | |
1143 | ||
e1a90ebd AS |
1144 | if (argp->minorversion >= 1) |
1145 | return nfserr_notsupp; | |
1146 | ||
1da177e4 LT |
1147 | READ_BUF(sizeof(clientid_t)); |
1148 | COPYMEM(clientid, sizeof(clientid_t)); | |
1149 | ||
1150 | DECODE_TAIL; | |
1151 | } | |
1152 | ||
dcb488a3 AA |
1153 | static __be32 |
1154 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
1155 | struct nfsd4_secinfo *secinfo) | |
1156 | { | |
1157 | DECODE_HEAD; | |
1158 | ||
1159 | READ_BUF(4); | |
06553991 | 1160 | secinfo->si_namelen = be32_to_cpup(p++); |
dcb488a3 AA |
1161 | READ_BUF(secinfo->si_namelen); |
1162 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
a36b1725 | 1163 | status = check_filename(secinfo->si_name, secinfo->si_namelen); |
dcb488a3 AA |
1164 | if (status) |
1165 | return status; | |
1166 | DECODE_TAIL; | |
1167 | } | |
1168 | ||
04f4ad16 BF |
1169 | static __be32 |
1170 | nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, | |
1171 | struct nfsd4_secinfo_no_name *sin) | |
1172 | { | |
1173 | DECODE_HEAD; | |
1174 | ||
1175 | READ_BUF(4); | |
06553991 | 1176 | sin->sin_style = be32_to_cpup(p++); |
04f4ad16 BF |
1177 | DECODE_TAIL; |
1178 | } | |
1179 | ||
b37ad28b | 1180 | static __be32 |
1da177e4 LT |
1181 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
1182 | { | |
e31a1b66 | 1183 | __be32 status; |
1da177e4 | 1184 | |
e31a1b66 BH |
1185 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
1186 | if (status) | |
1187 | return status; | |
3c8e0316 | 1188 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
47057abd | 1189 | &setattr->sa_acl, &setattr->sa_label, NULL); |
1da177e4 LT |
1190 | } |
1191 | ||
b37ad28b | 1192 | static __be32 |
1da177e4 LT |
1193 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
1194 | { | |
1195 | DECODE_HEAD; | |
1196 | ||
e1a90ebd AS |
1197 | if (argp->minorversion >= 1) |
1198 | return nfserr_notsupp; | |
1199 | ||
ab4684d1 CL |
1200 | READ_BUF(NFS4_VERIFIER_SIZE); |
1201 | COPYMEM(setclientid->se_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 1202 | |
a084daf5 BF |
1203 | status = nfsd4_decode_opaque(argp, &setclientid->se_name); |
1204 | if (status) | |
1205 | return nfserr_bad_xdr; | |
1206 | READ_BUF(8); | |
06553991 BF |
1207 | setclientid->se_callback_prog = be32_to_cpup(p++); |
1208 | setclientid->se_callback_netid_len = be32_to_cpup(p++); | |
4aed9c46 | 1209 | READ_BUF(setclientid->se_callback_netid_len); |
1da177e4 | 1210 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); |
4aed9c46 | 1211 | READ_BUF(4); |
06553991 | 1212 | setclientid->se_callback_addr_len = be32_to_cpup(p++); |
1da177e4 | 1213 | |
4aed9c46 | 1214 | READ_BUF(setclientid->se_callback_addr_len); |
1da177e4 | 1215 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); |
4aed9c46 | 1216 | READ_BUF(4); |
06553991 | 1217 | setclientid->se_callback_ident = be32_to_cpup(p++); |
1da177e4 LT |
1218 | |
1219 | DECODE_TAIL; | |
1220 | } | |
1221 | ||
b37ad28b | 1222 | static __be32 |
1da177e4 LT |
1223 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
1224 | { | |
1225 | DECODE_HEAD; | |
1226 | ||
e1a90ebd AS |
1227 | if (argp->minorversion >= 1) |
1228 | return nfserr_notsupp; | |
1229 | ||
ab4684d1 | 1230 | READ_BUF(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 1231 | COPYMEM(&scd_c->sc_clientid, 8); |
ab4684d1 | 1232 | COPYMEM(&scd_c->sc_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
1233 | |
1234 | DECODE_TAIL; | |
1235 | } | |
1236 | ||
1237 | /* Also used for NVERIFY */ | |
b37ad28b | 1238 | static __be32 |
1da177e4 LT |
1239 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
1240 | { | |
1da177e4 LT |
1241 | DECODE_HEAD; |
1242 | ||
1243 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
1244 | goto out; | |
1245 | ||
1246 | /* For convenience's sake, we compare raw xdr'd attributes in | |
e5f95703 BF |
1247 | * nfsd4_proc_verify */ |
1248 | ||
1da177e4 | 1249 | READ_BUF(4); |
06553991 | 1250 | verify->ve_attrlen = be32_to_cpup(p++); |
1da177e4 LT |
1251 | READ_BUF(verify->ve_attrlen); |
1252 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
1253 | ||
1254 | DECODE_TAIL; | |
1255 | } | |
1256 | ||
b37ad28b | 1257 | static __be32 |
1da177e4 LT |
1258 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
1259 | { | |
1260 | int avail; | |
1da177e4 LT |
1261 | int len; |
1262 | DECODE_HEAD; | |
1263 | ||
e31a1b66 BH |
1264 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
1265 | if (status) | |
1266 | return status; | |
1267 | READ_BUF(16); | |
542d1ab3 | 1268 | p = xdr_decode_hyper(p, &write->wr_offset); |
06553991 | 1269 | write->wr_stable_how = be32_to_cpup(p++); |
54bbb7d2 | 1270 | if (write->wr_stable_how > NFS_FILE_SYNC) |
1da177e4 | 1271 | goto xdr_error; |
06553991 | 1272 | write->wr_buflen = be32_to_cpup(p++); |
1da177e4 LT |
1273 | |
1274 | /* Sorry .. no magic macros for this.. * | |
1275 | * READ_BUF(write->wr_buflen); | |
1276 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
1277 | */ | |
1278 | avail = (char*)argp->end - (char*)argp->p; | |
1279 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
1280 | dprintk("NFSD: xdr error (%s:%d)\n", |
1281 | __FILE__, __LINE__); | |
1da177e4 LT |
1282 | goto xdr_error; |
1283 | } | |
70cc7f75 BF |
1284 | write->wr_head.iov_base = p; |
1285 | write->wr_head.iov_len = avail; | |
70cc7f75 | 1286 | write->wr_pagelist = argp->pagelist; |
5a80a54d BF |
1287 | |
1288 | len = XDR_QUADLEN(write->wr_buflen) << 2; | |
1289 | if (len >= avail) { | |
1290 | int pages; | |
1291 | ||
1292 | len -= avail; | |
1293 | ||
1294 | pages = len >> PAGE_SHIFT; | |
1295 | argp->pagelist += pages; | |
1296 | argp->pagelen -= pages * PAGE_SIZE; | |
1297 | len -= pages * PAGE_SIZE; | |
1298 | ||
fc788f64 | 1299 | next_decode_page(argp); |
1da177e4 | 1300 | } |
5a80a54d | 1301 | argp->p += XDR_QUADLEN(len); |
1da177e4 LT |
1302 | |
1303 | DECODE_TAIL; | |
1304 | } | |
1305 | ||
b37ad28b | 1306 | static __be32 |
1da177e4 LT |
1307 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
1308 | { | |
1309 | DECODE_HEAD; | |
1310 | ||
e1a90ebd AS |
1311 | if (argp->minorversion >= 1) |
1312 | return nfserr_notsupp; | |
1313 | ||
1da177e4 LT |
1314 | READ_BUF(12); |
1315 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
06553991 | 1316 | rlockowner->rl_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
1317 | READ_BUF(rlockowner->rl_owner.len); |
1318 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
1319 | ||
60adfc50 AA |
1320 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1321 | return nfserr_inval; | |
1da177e4 LT |
1322 | DECODE_TAIL; |
1323 | } | |
1324 | ||
2db134eb AA |
1325 | static __be32 |
1326 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1327 | struct nfsd4_exchange_id *exid) |
2db134eb | 1328 | { |
5afa040b | 1329 | int dummy, tmp; |
0733d213 AA |
1330 | DECODE_HEAD; |
1331 | ||
1332 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1333 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1334 | ||
a084daf5 BF |
1335 | status = nfsd4_decode_opaque(argp, &exid->clname); |
1336 | if (status) | |
1337 | return nfserr_bad_xdr; | |
0733d213 AA |
1338 | |
1339 | READ_BUF(4); | |
06553991 | 1340 | exid->flags = be32_to_cpup(p++); |
0733d213 AA |
1341 | |
1342 | /* Ignore state_protect4_a */ | |
1343 | READ_BUF(4); | |
06553991 | 1344 | exid->spa_how = be32_to_cpup(p++); |
0733d213 AA |
1345 | switch (exid->spa_how) { |
1346 | case SP4_NONE: | |
1347 | break; | |
1348 | case SP4_MACH_CRED: | |
1349 | /* spo_must_enforce */ | |
ed941643 AE |
1350 | status = nfsd4_decode_bitmap(argp, |
1351 | exid->spo_must_enforce); | |
1352 | if (status) | |
1353 | goto out; | |
0733d213 | 1354 | /* spo_must_allow */ |
ed941643 AE |
1355 | status = nfsd4_decode_bitmap(argp, exid->spo_must_allow); |
1356 | if (status) | |
1357 | goto out; | |
0733d213 AA |
1358 | break; |
1359 | case SP4_SSV: | |
1360 | /* ssp_ops */ | |
1361 | READ_BUF(4); | |
06553991 | 1362 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1363 | READ_BUF(dummy * 4); |
1364 | p += dummy; | |
1365 | ||
1366 | READ_BUF(4); | |
06553991 | 1367 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1368 | READ_BUF(dummy * 4); |
1369 | p += dummy; | |
1370 | ||
1371 | /* ssp_hash_algs<> */ | |
1372 | READ_BUF(4); | |
06553991 | 1373 | tmp = be32_to_cpup(p++); |
5afa040b MJ |
1374 | while (tmp--) { |
1375 | READ_BUF(4); | |
06553991 | 1376 | dummy = be32_to_cpup(p++); |
5afa040b MJ |
1377 | READ_BUF(dummy); |
1378 | p += XDR_QUADLEN(dummy); | |
1379 | } | |
0733d213 AA |
1380 | |
1381 | /* ssp_encr_algs<> */ | |
1382 | READ_BUF(4); | |
06553991 | 1383 | tmp = be32_to_cpup(p++); |
5afa040b MJ |
1384 | while (tmp--) { |
1385 | READ_BUF(4); | |
06553991 | 1386 | dummy = be32_to_cpup(p++); |
5afa040b MJ |
1387 | READ_BUF(dummy); |
1388 | p += XDR_QUADLEN(dummy); | |
1389 | } | |
0733d213 AA |
1390 | |
1391 | /* ssp_window and ssp_num_gss_handles */ | |
1392 | READ_BUF(8); | |
06553991 BF |
1393 | dummy = be32_to_cpup(p++); |
1394 | dummy = be32_to_cpup(p++); | |
0733d213 AA |
1395 | break; |
1396 | default: | |
1397 | goto xdr_error; | |
1398 | } | |
1399 | ||
1400 | /* Ignore Implementation ID */ | |
1401 | READ_BUF(4); /* nfs_impl_id4 array length */ | |
06553991 | 1402 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1403 | |
1404 | if (dummy > 1) | |
1405 | goto xdr_error; | |
1406 | ||
1407 | if (dummy == 1) { | |
1408 | /* nii_domain */ | |
1409 | READ_BUF(4); | |
06553991 | 1410 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1411 | READ_BUF(dummy); |
1412 | p += XDR_QUADLEN(dummy); | |
1413 | ||
1414 | /* nii_name */ | |
1415 | READ_BUF(4); | |
06553991 | 1416 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1417 | READ_BUF(dummy); |
1418 | p += XDR_QUADLEN(dummy); | |
1419 | ||
1420 | /* nii_date */ | |
1421 | READ_BUF(12); | |
1422 | p += 3; | |
1423 | } | |
1424 | DECODE_TAIL; | |
2db134eb AA |
1425 | } |
1426 | ||
1427 | static __be32 | |
1428 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1429 | struct nfsd4_create_session *sess) | |
1430 | { | |
ec6b5d7b | 1431 | DECODE_HEAD; |
ec6b5d7b | 1432 | u32 dummy; |
ec6b5d7b AA |
1433 | |
1434 | READ_BUF(16); | |
1435 | COPYMEM(&sess->clientid, 8); | |
06553991 BF |
1436 | sess->seqid = be32_to_cpup(p++); |
1437 | sess->flags = be32_to_cpup(p++); | |
ec6b5d7b AA |
1438 | |
1439 | /* Fore channel attrs */ | |
1440 | READ_BUF(28); | |
06553991 BF |
1441 | dummy = be32_to_cpup(p++); /* headerpadsz is always 0 */ |
1442 | sess->fore_channel.maxreq_sz = be32_to_cpup(p++); | |
1443 | sess->fore_channel.maxresp_sz = be32_to_cpup(p++); | |
1444 | sess->fore_channel.maxresp_cached = be32_to_cpup(p++); | |
1445 | sess->fore_channel.maxops = be32_to_cpup(p++); | |
1446 | sess->fore_channel.maxreqs = be32_to_cpup(p++); | |
1447 | sess->fore_channel.nr_rdma_attrs = be32_to_cpup(p++); | |
ec6b5d7b AA |
1448 | if (sess->fore_channel.nr_rdma_attrs == 1) { |
1449 | READ_BUF(4); | |
06553991 | 1450 | sess->fore_channel.rdma_attrs = be32_to_cpup(p++); |
ec6b5d7b AA |
1451 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { |
1452 | dprintk("Too many fore channel attr bitmaps!\n"); | |
1453 | goto xdr_error; | |
1454 | } | |
1455 | ||
1456 | /* Back channel attrs */ | |
1457 | READ_BUF(28); | |
06553991 BF |
1458 | dummy = be32_to_cpup(p++); /* headerpadsz is always 0 */ |
1459 | sess->back_channel.maxreq_sz = be32_to_cpup(p++); | |
1460 | sess->back_channel.maxresp_sz = be32_to_cpup(p++); | |
1461 | sess->back_channel.maxresp_cached = be32_to_cpup(p++); | |
1462 | sess->back_channel.maxops = be32_to_cpup(p++); | |
1463 | sess->back_channel.maxreqs = be32_to_cpup(p++); | |
1464 | sess->back_channel.nr_rdma_attrs = be32_to_cpup(p++); | |
ec6b5d7b AA |
1465 | if (sess->back_channel.nr_rdma_attrs == 1) { |
1466 | READ_BUF(4); | |
06553991 | 1467 | sess->back_channel.rdma_attrs = be32_to_cpup(p++); |
ec6b5d7b AA |
1468 | } else if (sess->back_channel.nr_rdma_attrs > 1) { |
1469 | dprintk("Too many back channel attr bitmaps!\n"); | |
1470 | goto xdr_error; | |
1471 | } | |
1472 | ||
acb2887e | 1473 | READ_BUF(4); |
06553991 | 1474 | sess->callback_prog = be32_to_cpup(p++); |
acb2887e | 1475 | nfsd4_decode_cb_sec(argp, &sess->cb_sec); |
ec6b5d7b | 1476 | DECODE_TAIL; |
2db134eb AA |
1477 | } |
1478 | ||
1479 | static __be32 | |
1480 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, | |
1481 | struct nfsd4_destroy_session *destroy_session) | |
1482 | { | |
e10e0cfc BH |
1483 | DECODE_HEAD; |
1484 | READ_BUF(NFS4_MAX_SESSIONID_LEN); | |
1485 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1486 | ||
1487 | DECODE_TAIL; | |
2db134eb AA |
1488 | } |
1489 | ||
e1ca12df BS |
1490 | static __be32 |
1491 | nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp, | |
1492 | struct nfsd4_free_stateid *free_stateid) | |
1493 | { | |
1494 | DECODE_HEAD; | |
1495 | ||
1496 | READ_BUF(sizeof(stateid_t)); | |
06553991 | 1497 | free_stateid->fr_stateid.si_generation = be32_to_cpup(p++); |
e1ca12df BS |
1498 | COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t)); |
1499 | ||
1500 | DECODE_TAIL; | |
1501 | } | |
1502 | ||
2db134eb AA |
1503 | static __be32 |
1504 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, | |
1505 | struct nfsd4_sequence *seq) | |
1506 | { | |
b85d4c01 BH |
1507 | DECODE_HEAD; |
1508 | ||
1509 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); | |
1510 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
06553991 BF |
1511 | seq->seqid = be32_to_cpup(p++); |
1512 | seq->slotid = be32_to_cpup(p++); | |
1513 | seq->maxslots = be32_to_cpup(p++); | |
1514 | seq->cachethis = be32_to_cpup(p++); | |
b85d4c01 BH |
1515 | |
1516 | DECODE_TAIL; | |
2db134eb AA |
1517 | } |
1518 | ||
17456804 BS |
1519 | static __be32 |
1520 | nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid) | |
1521 | { | |
17456804 | 1522 | int i; |
03cfb420 BS |
1523 | __be32 *p, status; |
1524 | struct nfsd4_test_stateid_id *stateid; | |
17456804 BS |
1525 | |
1526 | READ_BUF(4); | |
1527 | test_stateid->ts_num_ids = ntohl(*p++); | |
1528 | ||
03cfb420 | 1529 | INIT_LIST_HEAD(&test_stateid->ts_stateid_list); |
17456804 BS |
1530 | |
1531 | for (i = 0; i < test_stateid->ts_num_ids; i++) { | |
d5e23383 | 1532 | stateid = svcxdr_tmpalloc(argp, sizeof(*stateid)); |
03cfb420 | 1533 | if (!stateid) { |
afcf6792 | 1534 | status = nfserrno(-ENOMEM); |
03cfb420 BS |
1535 | goto out; |
1536 | } | |
1537 | ||
03cfb420 BS |
1538 | INIT_LIST_HEAD(&stateid->ts_id_list); |
1539 | list_add_tail(&stateid->ts_id_list, &test_stateid->ts_stateid_list); | |
1540 | ||
1541 | status = nfsd4_decode_stateid(argp, &stateid->ts_id_stateid); | |
17456804 | 1542 | if (status) |
03cfb420 | 1543 | goto out; |
17456804 BS |
1544 | } |
1545 | ||
1546 | status = 0; | |
1547 | out: | |
1548 | return status; | |
1549 | xdr_error: | |
1550 | dprintk("NFSD: xdr error (%s:%d)\n", __FILE__, __LINE__); | |
1551 | status = nfserr_bad_xdr; | |
1552 | goto out; | |
1553 | } | |
1554 | ||
345c2842 MJ |
1555 | static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_clientid *dc) |
1556 | { | |
1557 | DECODE_HEAD; | |
1558 | ||
1559 | READ_BUF(8); | |
1560 | COPYMEM(&dc->clientid, 8); | |
1561 | ||
1562 | DECODE_TAIL; | |
1563 | } | |
1564 | ||
4dc6ec00 BF |
1565 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) |
1566 | { | |
1567 | DECODE_HEAD; | |
1568 | ||
1569 | READ_BUF(4); | |
06553991 | 1570 | rc->rca_one_fs = be32_to_cpup(p++); |
4dc6ec00 BF |
1571 | |
1572 | DECODE_TAIL; | |
1573 | } | |
1574 | ||
9cf514cc CH |
1575 | #ifdef CONFIG_NFSD_PNFS |
1576 | static __be32 | |
1577 | nfsd4_decode_getdeviceinfo(struct nfsd4_compoundargs *argp, | |
1578 | struct nfsd4_getdeviceinfo *gdev) | |
1579 | { | |
1580 | DECODE_HEAD; | |
1581 | u32 num, i; | |
1582 | ||
1583 | READ_BUF(sizeof(struct nfsd4_deviceid) + 3 * 4); | |
1584 | COPYMEM(&gdev->gd_devid, sizeof(struct nfsd4_deviceid)); | |
1585 | gdev->gd_layout_type = be32_to_cpup(p++); | |
1586 | gdev->gd_maxcount = be32_to_cpup(p++); | |
1587 | num = be32_to_cpup(p++); | |
1588 | if (num) { | |
5a47fe3e SM |
1589 | if (num > 1000) |
1590 | goto xdr_error; | |
9cf514cc CH |
1591 | READ_BUF(4 * num); |
1592 | gdev->gd_notify_types = be32_to_cpup(p++); | |
1593 | for (i = 1; i < num; i++) { | |
1594 | if (be32_to_cpup(p++)) { | |
1595 | status = nfserr_inval; | |
1596 | goto out; | |
1597 | } | |
1598 | } | |
1599 | } | |
1600 | DECODE_TAIL; | |
1601 | } | |
1602 | ||
1603 | static __be32 | |
1604 | nfsd4_decode_layoutget(struct nfsd4_compoundargs *argp, | |
1605 | struct nfsd4_layoutget *lgp) | |
1606 | { | |
1607 | DECODE_HEAD; | |
1608 | ||
1609 | READ_BUF(36); | |
1610 | lgp->lg_signal = be32_to_cpup(p++); | |
1611 | lgp->lg_layout_type = be32_to_cpup(p++); | |
1612 | lgp->lg_seg.iomode = be32_to_cpup(p++); | |
1613 | p = xdr_decode_hyper(p, &lgp->lg_seg.offset); | |
1614 | p = xdr_decode_hyper(p, &lgp->lg_seg.length); | |
1615 | p = xdr_decode_hyper(p, &lgp->lg_minlength); | |
db59c0ef KM |
1616 | |
1617 | status = nfsd4_decode_stateid(argp, &lgp->lg_sid); | |
1618 | if (status) | |
1619 | return status; | |
1620 | ||
9cf514cc CH |
1621 | READ_BUF(4); |
1622 | lgp->lg_maxcount = be32_to_cpup(p++); | |
1623 | ||
1624 | DECODE_TAIL; | |
1625 | } | |
1626 | ||
1627 | static __be32 | |
1628 | nfsd4_decode_layoutcommit(struct nfsd4_compoundargs *argp, | |
1629 | struct nfsd4_layoutcommit *lcp) | |
1630 | { | |
1631 | DECODE_HEAD; | |
1632 | u32 timechange; | |
1633 | ||
1634 | READ_BUF(20); | |
1635 | p = xdr_decode_hyper(p, &lcp->lc_seg.offset); | |
1636 | p = xdr_decode_hyper(p, &lcp->lc_seg.length); | |
1637 | lcp->lc_reclaim = be32_to_cpup(p++); | |
db59c0ef KM |
1638 | |
1639 | status = nfsd4_decode_stateid(argp, &lcp->lc_sid); | |
1640 | if (status) | |
1641 | return status; | |
1642 | ||
9cf514cc CH |
1643 | READ_BUF(4); |
1644 | lcp->lc_newoffset = be32_to_cpup(p++); | |
1645 | if (lcp->lc_newoffset) { | |
1646 | READ_BUF(8); | |
1647 | p = xdr_decode_hyper(p, &lcp->lc_last_wr); | |
1648 | } else | |
1649 | lcp->lc_last_wr = 0; | |
1650 | READ_BUF(4); | |
1651 | timechange = be32_to_cpup(p++); | |
1652 | if (timechange) { | |
1653 | status = nfsd4_decode_time(argp, &lcp->lc_mtime); | |
1654 | if (status) | |
1655 | return status; | |
1656 | } else { | |
1657 | lcp->lc_mtime.tv_nsec = UTIME_NOW; | |
1658 | } | |
1659 | READ_BUF(8); | |
1660 | lcp->lc_layout_type = be32_to_cpup(p++); | |
1661 | ||
1662 | /* | |
1663 | * Save the layout update in XDR format and let the layout driver deal | |
1664 | * with it later. | |
1665 | */ | |
1666 | lcp->lc_up_len = be32_to_cpup(p++); | |
1667 | if (lcp->lc_up_len > 0) { | |
1668 | READ_BUF(lcp->lc_up_len); | |
1669 | READMEM(lcp->lc_up_layout, lcp->lc_up_len); | |
1670 | } | |
1671 | ||
1672 | DECODE_TAIL; | |
1673 | } | |
1674 | ||
1675 | static __be32 | |
1676 | nfsd4_decode_layoutreturn(struct nfsd4_compoundargs *argp, | |
1677 | struct nfsd4_layoutreturn *lrp) | |
1678 | { | |
1679 | DECODE_HEAD; | |
1680 | ||
1681 | READ_BUF(16); | |
1682 | lrp->lr_reclaim = be32_to_cpup(p++); | |
1683 | lrp->lr_layout_type = be32_to_cpup(p++); | |
1684 | lrp->lr_seg.iomode = be32_to_cpup(p++); | |
1685 | lrp->lr_return_type = be32_to_cpup(p++); | |
1686 | if (lrp->lr_return_type == RETURN_FILE) { | |
1687 | READ_BUF(16); | |
1688 | p = xdr_decode_hyper(p, &lrp->lr_seg.offset); | |
1689 | p = xdr_decode_hyper(p, &lrp->lr_seg.length); | |
db59c0ef KM |
1690 | |
1691 | status = nfsd4_decode_stateid(argp, &lrp->lr_sid); | |
1692 | if (status) | |
1693 | return status; | |
1694 | ||
9cf514cc CH |
1695 | READ_BUF(4); |
1696 | lrp->lrf_body_len = be32_to_cpup(p++); | |
1697 | if (lrp->lrf_body_len > 0) { | |
1698 | READ_BUF(lrp->lrf_body_len); | |
1699 | READMEM(lrp->lrf_body, lrp->lrf_body_len); | |
1700 | } | |
1701 | } else { | |
1702 | lrp->lr_seg.offset = 0; | |
1703 | lrp->lr_seg.length = NFS4_MAX_UINT64; | |
1704 | } | |
1705 | ||
1706 | DECODE_TAIL; | |
1707 | } | |
1708 | #endif /* CONFIG_NFSD_PNFS */ | |
1709 | ||
95d871f0 AS |
1710 | static __be32 |
1711 | nfsd4_decode_fallocate(struct nfsd4_compoundargs *argp, | |
1712 | struct nfsd4_fallocate *fallocate) | |
1713 | { | |
1714 | DECODE_HEAD; | |
1715 | ||
1716 | status = nfsd4_decode_stateid(argp, &fallocate->falloc_stateid); | |
1717 | if (status) | |
1718 | return status; | |
1719 | ||
1720 | READ_BUF(16); | |
1721 | p = xdr_decode_hyper(p, &fallocate->falloc_offset); | |
1722 | xdr_decode_hyper(p, &fallocate->falloc_length); | |
1723 | ||
1724 | DECODE_TAIL; | |
1725 | } | |
1726 | ||
ffa0160a CH |
1727 | static __be32 |
1728 | nfsd4_decode_clone(struct nfsd4_compoundargs *argp, struct nfsd4_clone *clone) | |
1729 | { | |
1730 | DECODE_HEAD; | |
1731 | ||
1732 | status = nfsd4_decode_stateid(argp, &clone->cl_src_stateid); | |
1733 | if (status) | |
1734 | return status; | |
1735 | status = nfsd4_decode_stateid(argp, &clone->cl_dst_stateid); | |
1736 | if (status) | |
1737 | return status; | |
1738 | ||
1739 | READ_BUF(8 + 8 + 8); | |
1740 | p = xdr_decode_hyper(p, &clone->cl_src_pos); | |
1741 | p = xdr_decode_hyper(p, &clone->cl_dst_pos); | |
1742 | p = xdr_decode_hyper(p, &clone->cl_count); | |
1743 | DECODE_TAIL; | |
1744 | } | |
1745 | ||
29ae7f9d AS |
1746 | static __be32 |
1747 | nfsd4_decode_copy(struct nfsd4_compoundargs *argp, struct nfsd4_copy *copy) | |
1748 | { | |
1749 | DECODE_HEAD; | |
1750 | unsigned int tmp; | |
1751 | ||
1752 | status = nfsd4_decode_stateid(argp, ©->cp_src_stateid); | |
1753 | if (status) | |
1754 | return status; | |
1755 | status = nfsd4_decode_stateid(argp, ©->cp_dst_stateid); | |
1756 | if (status) | |
1757 | return status; | |
1758 | ||
1759 | READ_BUF(8 + 8 + 8 + 4 + 4 + 4); | |
1760 | p = xdr_decode_hyper(p, ©->cp_src_pos); | |
1761 | p = xdr_decode_hyper(p, ©->cp_dst_pos); | |
1762 | p = xdr_decode_hyper(p, ©->cp_count); | |
1763 | copy->cp_consecutive = be32_to_cpup(p++); | |
1764 | copy->cp_synchronous = be32_to_cpup(p++); | |
1765 | tmp = be32_to_cpup(p); /* Source server list not supported */ | |
1766 | ||
1767 | DECODE_TAIL; | |
1768 | } | |
1769 | ||
24bab491 AS |
1770 | static __be32 |
1771 | nfsd4_decode_seek(struct nfsd4_compoundargs *argp, struct nfsd4_seek *seek) | |
1772 | { | |
1773 | DECODE_HEAD; | |
1774 | ||
1775 | status = nfsd4_decode_stateid(argp, &seek->seek_stateid); | |
1776 | if (status) | |
1777 | return status; | |
1778 | ||
1779 | READ_BUF(8 + 4); | |
1780 | p = xdr_decode_hyper(p, &seek->seek_offset); | |
1781 | seek->seek_whence = be32_to_cpup(p); | |
1782 | ||
1783 | DECODE_TAIL; | |
1784 | } | |
1785 | ||
347e0ad9 BH |
1786 | static __be32 |
1787 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1788 | { | |
1789 | return nfs_ok; | |
1790 | } | |
1791 | ||
3c375c6f BH |
1792 | static __be32 |
1793 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1794 | { | |
1e685ec2 | 1795 | return nfserr_notsupp; |
3c375c6f BH |
1796 | } |
1797 | ||
347e0ad9 BH |
1798 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1799 | ||
c1df609d | 1800 | static const nfsd4_dec nfsd4_dec_ops[] = { |
ad1060c8 BF |
1801 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1802 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1803 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1804 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1805 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1806 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1807 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1808 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1809 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1810 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1811 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1812 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1813 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1814 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1815 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1816 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1817 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1818 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1819 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1820 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
e1a90ebd | 1821 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_putpubfh, |
ad1060c8 BF |
1822 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1823 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1824 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1825 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1826 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1827 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1828 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1829 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1830 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1831 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1832 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1833 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1834 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1835 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1836 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1837 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
2db134eb AA |
1838 | |
1839 | /* new operations for NFSv4.1 */ | |
cb73a9f4 | 1840 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_backchannel_ctl, |
1d1bc8f2 | 1841 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
9064caae RD |
1842 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
1843 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
1844 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
e1ca12df | 1845 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, |
9064caae | 1846 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
9cf514cc CH |
1847 | #ifdef CONFIG_NFSD_PNFS |
1848 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_getdeviceinfo, | |
1849 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1850 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_layoutcommit, | |
1851 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_layoutget, | |
1852 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_layoutreturn, | |
1853 | #else | |
9064caae RD |
1854 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, |
1855 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1856 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1857 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1858 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
9cf514cc | 1859 | #endif |
04f4ad16 | 1860 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
9064caae RD |
1861 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
1862 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
17456804 | 1863 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid, |
9064caae | 1864 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
345c2842 | 1865 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, |
4dc6ec00 | 1866 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
87a15a80 AS |
1867 | |
1868 | /* new operations for NFSv4.2 */ | |
95d871f0 | 1869 | [OP_ALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate, |
29ae7f9d | 1870 | [OP_COPY] = (nfsd4_dec)nfsd4_decode_copy, |
87a15a80 | 1871 | [OP_COPY_NOTIFY] = (nfsd4_dec)nfsd4_decode_notsupp, |
b0cb9085 | 1872 | [OP_DEALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate, |
87a15a80 AS |
1873 | [OP_IO_ADVISE] = (nfsd4_dec)nfsd4_decode_notsupp, |
1874 | [OP_LAYOUTERROR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1875 | [OP_LAYOUTSTATS] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1876 | [OP_OFFLOAD_CANCEL] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1877 | [OP_OFFLOAD_STATUS] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1878 | [OP_READ_PLUS] = (nfsd4_dec)nfsd4_decode_notsupp, | |
24bab491 | 1879 | [OP_SEEK] = (nfsd4_dec)nfsd4_decode_seek, |
87a15a80 | 1880 | [OP_WRITE_SAME] = (nfsd4_dec)nfsd4_decode_notsupp, |
ffa0160a | 1881 | [OP_CLONE] = (nfsd4_dec)nfsd4_decode_clone, |
2db134eb AA |
1882 | }; |
1883 | ||
e1a90ebd AS |
1884 | static inline bool |
1885 | nfsd4_opnum_in_range(struct nfsd4_compoundargs *argp, struct nfsd4_op *op) | |
1886 | { | |
8217d146 | 1887 | if (op->opnum < FIRST_NFS4_OP) |
e1a90ebd | 1888 | return false; |
8217d146 | 1889 | else if (argp->minorversion == 0 && op->opnum > LAST_NFS40_OP) |
e1a90ebd | 1890 | return false; |
8217d146 AS |
1891 | else if (argp->minorversion == 1 && op->opnum > LAST_NFS41_OP) |
1892 | return false; | |
1893 | else if (argp->minorversion == 2 && op->opnum > LAST_NFS42_OP) | |
e1a90ebd AS |
1894 | return false; |
1895 | return true; | |
1896 | } | |
f2feb96b | 1897 | |
b37ad28b | 1898 | static __be32 |
1da177e4 LT |
1899 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1900 | { | |
1901 | DECODE_HEAD; | |
1902 | struct nfsd4_op *op; | |
1091006c | 1903 | bool cachethis = false; |
a5cddc88 BF |
1904 | int auth_slack= argp->rqstp->rq_auth_slack; |
1905 | int max_reply = auth_slack + 8; /* opcnt, status */ | |
b0e35fda BF |
1906 | int readcount = 0; |
1907 | int readbytes = 0; | |
1da177e4 LT |
1908 | int i; |
1909 | ||
1da177e4 | 1910 | READ_BUF(4); |
06553991 | 1911 | argp->taglen = be32_to_cpup(p++); |
4aed9c46 | 1912 | READ_BUF(argp->taglen); |
1da177e4 | 1913 | SAVEMEM(argp->tag, argp->taglen); |
4aed9c46 | 1914 | READ_BUF(8); |
06553991 BF |
1915 | argp->minorversion = be32_to_cpup(p++); |
1916 | argp->opcnt = be32_to_cpup(p++); | |
4f0cefbf | 1917 | max_reply += 4 + (XDR_QUADLEN(argp->taglen) << 2); |
1da177e4 LT |
1918 | |
1919 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1920 | goto xdr_error; | |
1921 | if (argp->opcnt > 100) | |
1922 | goto xdr_error; | |
1923 | ||
e8c96f8c | 1924 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
5d6031ca | 1925 | argp->ops = kzalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1da177e4 LT |
1926 | if (!argp->ops) { |
1927 | argp->ops = argp->iops; | |
817cb9d4 | 1928 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1929 | goto xdr_error; |
1930 | } | |
1931 | } | |
1932 | ||
e1a90ebd | 1933 | if (argp->minorversion > NFSD_SUPPORTED_MINOR_VERSION) |
30cff1ff BH |
1934 | argp->opcnt = 0; |
1935 | ||
1da177e4 LT |
1936 | for (i = 0; i < argp->opcnt; i++) { |
1937 | op = &argp->ops[i]; | |
1938 | op->replay = NULL; | |
1939 | ||
8a61b18c | 1940 | READ_BUF(4); |
06553991 | 1941 | op->opnum = be32_to_cpup(p++); |
1da177e4 | 1942 | |
e1a90ebd AS |
1943 | if (nfsd4_opnum_in_range(argp, op)) |
1944 | op->status = nfsd4_dec_ops[op->opnum](argp, &op->u); | |
347e0ad9 | 1945 | else { |
1da177e4 LT |
1946 | op->opnum = OP_ILLEGAL; |
1947 | op->status = nfserr_op_illegal; | |
1da177e4 | 1948 | } |
f4f9ef4a | 1949 | op->opdesc = OPDESC(op); |
1091006c BF |
1950 | /* |
1951 | * We'll try to cache the result in the DRC if any one | |
1952 | * op in the compound wants to be cached: | |
1953 | */ | |
1954 | cachethis |= nfsd4_cache_this_op(op); | |
6ff40dec | 1955 | |
b0e35fda BF |
1956 | if (op->opnum == OP_READ) { |
1957 | readcount++; | |
1958 | readbytes += nfsd4_max_reply(argp->rqstp, op); | |
1959 | } else | |
1960 | max_reply += nfsd4_max_reply(argp->rqstp, op); | |
f7b43d0c | 1961 | /* |
7323f0d2 KM |
1962 | * OP_LOCK and OP_LOCKT may return a conflicting lock. |
1963 | * (Special case because it will just skip encoding this | |
1964 | * if it runs out of xdr buffer space, and it is the only | |
1965 | * operation that behaves this way.) | |
f7b43d0c | 1966 | */ |
7323f0d2 | 1967 | if (op->opnum == OP_LOCK || op->opnum == OP_LOCKT) |
f7b43d0c | 1968 | max_reply += NFS4_OPAQUE_LIMIT; |
e372ba60 BF |
1969 | |
1970 | if (op->status) { | |
1971 | argp->opcnt = i+1; | |
1972 | break; | |
1973 | } | |
1da177e4 | 1974 | } |
1091006c BF |
1975 | /* Sessions make the DRC unnecessary: */ |
1976 | if (argp->minorversion) | |
1977 | cachethis = false; | |
b0e35fda | 1978 | svc_reserve(argp->rqstp, max_reply + readbytes); |
1091006c | 1979 | argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; |
1da177e4 | 1980 | |
a5cddc88 | 1981 | if (readcount > 1 || max_reply > PAGE_SIZE - auth_slack) |
779fb0f3 | 1982 | clear_bit(RQ_SPLICE_OK, &argp->rqstp->rq_flags); |
b0e35fda | 1983 | |
1da177e4 LT |
1984 | DECODE_TAIL; |
1985 | } | |
1da177e4 | 1986 | |
b8800921 N |
1987 | static __be32 *encode_change(__be32 *p, struct kstat *stat, struct inode *inode, |
1988 | struct svc_export *exp) | |
c654b8a9 | 1989 | { |
b8800921 N |
1990 | if (exp->ex_flags & NFSEXP_V4ROOT) { |
1991 | *p++ = cpu_to_be32(convert_to_wallclock(exp->cd->flush_time)); | |
1992 | *p++ = 0; | |
1993 | } else if (IS_I_VERSION(inode)) { | |
630458e7 | 1994 | p = xdr_encode_hyper(p, nfsd4_change_attribute(inode)); |
c654b8a9 | 1995 | } else { |
d05d5744 BF |
1996 | *p++ = cpu_to_be32(stat->ctime.tv_sec); |
1997 | *p++ = cpu_to_be32(stat->ctime.tv_nsec); | |
c654b8a9 | 1998 | } |
d05d5744 | 1999 | return p; |
c654b8a9 BF |
2000 | } |
2001 | ||
d05d5744 | 2002 | static __be32 *encode_cinfo(__be32 *p, struct nfsd4_change_info *c) |
c654b8a9 | 2003 | { |
d05d5744 | 2004 | *p++ = cpu_to_be32(c->atomic); |
c654b8a9 | 2005 | if (c->change_supported) { |
d05d5744 BF |
2006 | p = xdr_encode_hyper(p, c->before_change); |
2007 | p = xdr_encode_hyper(p, c->after_change); | |
c654b8a9 | 2008 | } else { |
d05d5744 BF |
2009 | *p++ = cpu_to_be32(c->before_ctime_sec); |
2010 | *p++ = cpu_to_be32(c->before_ctime_nsec); | |
2011 | *p++ = cpu_to_be32(c->after_ctime_sec); | |
2012 | *p++ = cpu_to_be32(c->after_ctime_nsec); | |
c654b8a9 | 2013 | } |
d05d5744 | 2014 | return p; |
c654b8a9 | 2015 | } |
1da177e4 | 2016 | |
81c3f413 | 2017 | /* Encode as an array of strings the string given with components |
e7a0444a | 2018 | * separated @sep, escaped with esc_enter and esc_exit. |
81c3f413 | 2019 | */ |
ddd1ea56 BF |
2020 | static __be32 nfsd4_encode_components_esc(struct xdr_stream *xdr, char sep, |
2021 | char *components, char esc_enter, | |
2022 | char esc_exit) | |
81c3f413 | 2023 | { |
ddd1ea56 | 2024 | __be32 *p; |
082d4bd7 BF |
2025 | __be32 pathlen; |
2026 | int pathlen_offset; | |
81c3f413 | 2027 | int strlen, count=0; |
e7a0444a | 2028 | char *str, *end, *next; |
81c3f413 BF |
2029 | |
2030 | dprintk("nfsd4_encode_components(%s)\n", components); | |
082d4bd7 BF |
2031 | |
2032 | pathlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
2033 | p = xdr_reserve_space(xdr, 4); |
2034 | if (!p) | |
81c3f413 | 2035 | return nfserr_resource; |
082d4bd7 BF |
2036 | p++; /* We will fill this in with @count later */ |
2037 | ||
81c3f413 BF |
2038 | end = str = components; |
2039 | while (*end) { | |
e7a0444a WAA |
2040 | bool found_esc = false; |
2041 | ||
2042 | /* try to parse as esc_start, ..., esc_end, sep */ | |
2043 | if (*str == esc_enter) { | |
2044 | for (; *end && (*end != esc_exit); end++) | |
2045 | /* find esc_exit or end of string */; | |
2046 | next = end + 1; | |
2047 | if (*end && (!*next || *next == sep)) { | |
2048 | str++; | |
2049 | found_esc = true; | |
2050 | } | |
2051 | } | |
2052 | ||
2053 | if (!found_esc) | |
2054 | for (; *end && (*end != sep); end++) | |
2055 | /* find sep or end of string */; | |
2056 | ||
81c3f413 BF |
2057 | strlen = end - str; |
2058 | if (strlen) { | |
ddd1ea56 BF |
2059 | p = xdr_reserve_space(xdr, strlen + 4); |
2060 | if (!p) | |
81c3f413 | 2061 | return nfserr_resource; |
0c0c267b | 2062 | p = xdr_encode_opaque(p, str, strlen); |
81c3f413 BF |
2063 | count++; |
2064 | } | |
2065 | else | |
2066 | end++; | |
5a64e569 BC |
2067 | if (found_esc) |
2068 | end = next; | |
2069 | ||
81c3f413 BF |
2070 | str = end; |
2071 | } | |
bf7491f1 | 2072 | pathlen = htonl(count); |
082d4bd7 | 2073 | write_bytes_to_xdr_buf(xdr->buf, pathlen_offset, &pathlen, 4); |
81c3f413 BF |
2074 | return 0; |
2075 | } | |
2076 | ||
e7a0444a WAA |
2077 | /* Encode as an array of strings the string given with components |
2078 | * separated @sep. | |
2079 | */ | |
ddd1ea56 BF |
2080 | static __be32 nfsd4_encode_components(struct xdr_stream *xdr, char sep, |
2081 | char *components) | |
e7a0444a | 2082 | { |
ddd1ea56 | 2083 | return nfsd4_encode_components_esc(xdr, sep, components, 0, 0); |
e7a0444a WAA |
2084 | } |
2085 | ||
81c3f413 BF |
2086 | /* |
2087 | * encode a location element of a fs_locations structure | |
2088 | */ | |
ddd1ea56 BF |
2089 | static __be32 nfsd4_encode_fs_location4(struct xdr_stream *xdr, |
2090 | struct nfsd4_fs_location *location) | |
81c3f413 | 2091 | { |
b37ad28b | 2092 | __be32 status; |
81c3f413 | 2093 | |
ddd1ea56 | 2094 | status = nfsd4_encode_components_esc(xdr, ':', location->hosts, |
e7a0444a | 2095 | '[', ']'); |
81c3f413 BF |
2096 | if (status) |
2097 | return status; | |
ddd1ea56 | 2098 | status = nfsd4_encode_components(xdr, '/', location->path); |
81c3f413 BF |
2099 | if (status) |
2100 | return status; | |
81c3f413 BF |
2101 | return 0; |
2102 | } | |
2103 | ||
2104 | /* | |
ed748aac | 2105 | * Encode a path in RFC3530 'pathname4' format |
81c3f413 | 2106 | */ |
ddd1ea56 BF |
2107 | static __be32 nfsd4_encode_path(struct xdr_stream *xdr, |
2108 | const struct path *root, | |
2109 | const struct path *path) | |
81c3f413 | 2110 | { |
301f0268 | 2111 | struct path cur = *path; |
ddd1ea56 | 2112 | __be32 *p; |
ed748aac TM |
2113 | struct dentry **components = NULL; |
2114 | unsigned int ncomponents = 0; | |
2115 | __be32 err = nfserr_jukebox; | |
81c3f413 | 2116 | |
ed748aac | 2117 | dprintk("nfsd4_encode_components("); |
81c3f413 | 2118 | |
ed748aac TM |
2119 | path_get(&cur); |
2120 | /* First walk the path up to the nfsd root, and store the | |
2121 | * dentries/path components in an array. | |
2122 | */ | |
2123 | for (;;) { | |
b77a4b2e | 2124 | if (path_equal(&cur, root)) |
ed748aac TM |
2125 | break; |
2126 | if (cur.dentry == cur.mnt->mnt_root) { | |
2127 | if (follow_up(&cur)) | |
2128 | continue; | |
2129 | goto out_free; | |
2130 | } | |
2131 | if ((ncomponents & 15) == 0) { | |
2132 | struct dentry **new; | |
2133 | new = krealloc(components, | |
2134 | sizeof(*new) * (ncomponents + 16), | |
2135 | GFP_KERNEL); | |
2136 | if (!new) | |
2137 | goto out_free; | |
2138 | components = new; | |
2139 | } | |
2140 | components[ncomponents++] = cur.dentry; | |
2141 | cur.dentry = dget_parent(cur.dentry); | |
2142 | } | |
ddd1ea56 BF |
2143 | err = nfserr_resource; |
2144 | p = xdr_reserve_space(xdr, 4); | |
2145 | if (!p) | |
ed748aac | 2146 | goto out_free; |
c373b0a4 | 2147 | *p++ = cpu_to_be32(ncomponents); |
ed748aac TM |
2148 | |
2149 | while (ncomponents) { | |
2150 | struct dentry *dentry = components[ncomponents - 1]; | |
301f0268 | 2151 | unsigned int len; |
ed748aac | 2152 | |
301f0268 AV |
2153 | spin_lock(&dentry->d_lock); |
2154 | len = dentry->d_name.len; | |
ddd1ea56 BF |
2155 | p = xdr_reserve_space(xdr, len + 4); |
2156 | if (!p) { | |
301f0268 | 2157 | spin_unlock(&dentry->d_lock); |
ed748aac | 2158 | goto out_free; |
301f0268 | 2159 | } |
0c0c267b | 2160 | p = xdr_encode_opaque(p, dentry->d_name.name, len); |
a455589f | 2161 | dprintk("/%pd", dentry); |
301f0268 | 2162 | spin_unlock(&dentry->d_lock); |
ed748aac TM |
2163 | dput(dentry); |
2164 | ncomponents--; | |
81c3f413 | 2165 | } |
ed748aac | 2166 | |
ed748aac TM |
2167 | err = 0; |
2168 | out_free: | |
2169 | dprintk(")\n"); | |
2170 | while (ncomponents) | |
2171 | dput(components[--ncomponents]); | |
2172 | kfree(components); | |
2173 | path_put(&cur); | |
2174 | return err; | |
2175 | } | |
2176 | ||
ddd1ea56 BF |
2177 | static __be32 nfsd4_encode_fsloc_fsroot(struct xdr_stream *xdr, |
2178 | struct svc_rqst *rqstp, const struct path *path) | |
ed748aac TM |
2179 | { |
2180 | struct svc_export *exp_ps; | |
2181 | __be32 res; | |
2182 | ||
2183 | exp_ps = rqst_find_fsidzero_export(rqstp); | |
2184 | if (IS_ERR(exp_ps)) | |
2185 | return nfserrno(PTR_ERR(exp_ps)); | |
ddd1ea56 | 2186 | res = nfsd4_encode_path(xdr, &exp_ps->ex_path, path); |
ed748aac TM |
2187 | exp_put(exp_ps); |
2188 | return res; | |
81c3f413 BF |
2189 | } |
2190 | ||
2191 | /* | |
2192 | * encode a fs_locations structure | |
2193 | */ | |
ddd1ea56 BF |
2194 | static __be32 nfsd4_encode_fs_locations(struct xdr_stream *xdr, |
2195 | struct svc_rqst *rqstp, struct svc_export *exp) | |
81c3f413 | 2196 | { |
b37ad28b | 2197 | __be32 status; |
cc45f017 | 2198 | int i; |
ddd1ea56 | 2199 | __be32 *p; |
81c3f413 | 2200 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
81c3f413 | 2201 | |
ddd1ea56 | 2202 | status = nfsd4_encode_fsloc_fsroot(xdr, rqstp, &exp->ex_path); |
81c3f413 BF |
2203 | if (status) |
2204 | return status; | |
ddd1ea56 BF |
2205 | p = xdr_reserve_space(xdr, 4); |
2206 | if (!p) | |
81c3f413 | 2207 | return nfserr_resource; |
c373b0a4 | 2208 | *p++ = cpu_to_be32(fslocs->locations_count); |
81c3f413 | 2209 | for (i=0; i<fslocs->locations_count; i++) { |
ddd1ea56 | 2210 | status = nfsd4_encode_fs_location4(xdr, &fslocs->locations[i]); |
81c3f413 BF |
2211 | if (status) |
2212 | return status; | |
2213 | } | |
81c3f413 BF |
2214 | return 0; |
2215 | } | |
1da177e4 | 2216 | |
3d2544b1 BF |
2217 | static u32 nfs4_file_type(umode_t mode) |
2218 | { | |
2219 | switch (mode & S_IFMT) { | |
2220 | case S_IFIFO: return NF4FIFO; | |
2221 | case S_IFCHR: return NF4CHR; | |
2222 | case S_IFDIR: return NF4DIR; | |
2223 | case S_IFBLK: return NF4BLK; | |
2224 | case S_IFLNK: return NF4LNK; | |
2225 | case S_IFREG: return NF4REG; | |
2226 | case S_IFSOCK: return NF4SOCK; | |
2227 | default: return NF4BAD; | |
2228 | }; | |
2229 | } | |
1da177e4 | 2230 | |
b37ad28b | 2231 | static inline __be32 |
ddd1ea56 BF |
2232 | nfsd4_encode_aclname(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2233 | struct nfs4_ace *ace) | |
1da177e4 | 2234 | { |
3554116d | 2235 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ddd1ea56 | 2236 | return nfs4_acl_write_who(xdr, ace->whotype); |
3554116d | 2237 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
ddd1ea56 | 2238 | return nfsd4_encode_group(xdr, rqstp, ace->who_gid); |
3554116d | 2239 | else |
ddd1ea56 | 2240 | return nfsd4_encode_user(xdr, rqstp, ace->who_uid); |
1da177e4 LT |
2241 | } |
2242 | ||
6896f15a | 2243 | static inline __be32 |
8a4c3926 | 2244 | nfsd4_encode_layout_types(struct xdr_stream *xdr, u32 layout_types) |
6896f15a | 2245 | { |
8a4c3926 JL |
2246 | __be32 *p; |
2247 | unsigned long i = hweight_long(layout_types); | |
6896f15a | 2248 | |
8a4c3926 JL |
2249 | p = xdr_reserve_space(xdr, 4 + 4 * i); |
2250 | if (!p) | |
2251 | return nfserr_resource; | |
2252 | ||
2253 | *p++ = cpu_to_be32(i); | |
2254 | ||
2255 | for (i = LAYOUT_NFSV4_1_FILES; i < LAYOUT_TYPE_MAX; ++i) | |
2256 | if (layout_types & (1 << i)) | |
2257 | *p++ = cpu_to_be32(i); | |
6896f15a KM |
2258 | |
2259 | return 0; | |
2260 | } | |
2261 | ||
42ca0993 BF |
2262 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
2263 | FATTR4_WORD0_RDATTR_ERROR) | |
2264 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
c2227a39 | 2265 | #define WORD2_ABSENT_FS_ATTRS 0 |
42ca0993 | 2266 | |
18032ca0 DQ |
2267 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
2268 | static inline __be32 | |
ddd1ea56 BF |
2269 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2270 | void *context, int len) | |
18032ca0 | 2271 | { |
ddd1ea56 | 2272 | __be32 *p; |
18032ca0 | 2273 | |
ddd1ea56 BF |
2274 | p = xdr_reserve_space(xdr, len + 4 + 4 + 4); |
2275 | if (!p) | |
18032ca0 DQ |
2276 | return nfserr_resource; |
2277 | ||
2278 | /* | |
2279 | * For now we use a 0 here to indicate the null translation; in | |
2280 | * the future we may place a call to translation code here. | |
2281 | */ | |
c373b0a4 BF |
2282 | *p++ = cpu_to_be32(0); /* lfs */ |
2283 | *p++ = cpu_to_be32(0); /* pi */ | |
18032ca0 | 2284 | p = xdr_encode_opaque(p, context, len); |
18032ca0 DQ |
2285 | return 0; |
2286 | } | |
2287 | #else | |
2288 | static inline __be32 | |
ddd1ea56 BF |
2289 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2290 | void *context, int len) | |
18032ca0 DQ |
2291 | { return 0; } |
2292 | #endif | |
2293 | ||
c2227a39 | 2294 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *bmval2, u32 *rdattr_err) |
42ca0993 BF |
2295 | { |
2296 | /* As per referral draft: */ | |
2297 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
2298 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
2299 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
2300 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
2301 | *rdattr_err = NFSERR_MOVED; | |
2302 | else | |
2303 | return nfserr_moved; | |
2304 | } | |
2305 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
2306 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
c2227a39 | 2307 | *bmval2 &= WORD2_ABSENT_FS_ATTRS; |
42ca0993 BF |
2308 | return 0; |
2309 | } | |
1da177e4 | 2310 | |
ae7095a7 BF |
2311 | |
2312 | static int get_parent_attributes(struct svc_export *exp, struct kstat *stat) | |
2313 | { | |
2314 | struct path path = exp->ex_path; | |
2315 | int err; | |
2316 | ||
2317 | path_get(&path); | |
2318 | while (follow_up(&path)) { | |
2319 | if (path.dentry != path.mnt->mnt_root) | |
2320 | break; | |
2321 | } | |
a528d35e | 2322 | err = vfs_getattr(&path, stat, STATX_BASIC_STATS, AT_STATX_SYNC_AS_STAT); |
ae7095a7 BF |
2323 | path_put(&path); |
2324 | return err; | |
2325 | } | |
2326 | ||
75976de6 KM |
2327 | static __be32 |
2328 | nfsd4_encode_bitmap(struct xdr_stream *xdr, u32 bmval0, u32 bmval1, u32 bmval2) | |
2329 | { | |
2330 | __be32 *p; | |
2331 | ||
2332 | if (bmval2) { | |
2333 | p = xdr_reserve_space(xdr, 16); | |
2334 | if (!p) | |
2335 | goto out_resource; | |
2336 | *p++ = cpu_to_be32(3); | |
2337 | *p++ = cpu_to_be32(bmval0); | |
2338 | *p++ = cpu_to_be32(bmval1); | |
2339 | *p++ = cpu_to_be32(bmval2); | |
2340 | } else if (bmval1) { | |
2341 | p = xdr_reserve_space(xdr, 12); | |
2342 | if (!p) | |
2343 | goto out_resource; | |
2344 | *p++ = cpu_to_be32(2); | |
2345 | *p++ = cpu_to_be32(bmval0); | |
2346 | *p++ = cpu_to_be32(bmval1); | |
2347 | } else { | |
2348 | p = xdr_reserve_space(xdr, 8); | |
2349 | if (!p) | |
2350 | goto out_resource; | |
2351 | *p++ = cpu_to_be32(1); | |
2352 | *p++ = cpu_to_be32(bmval0); | |
2353 | } | |
2354 | ||
2355 | return 0; | |
2356 | out_resource: | |
2357 | return nfserr_resource; | |
2358 | } | |
2359 | ||
1da177e4 LT |
2360 | /* |
2361 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
2362 | * ourselves. | |
1da177e4 | 2363 | */ |
da2ebce6 | 2364 | static __be32 |
d5184658 BF |
2365 | nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp, |
2366 | struct svc_export *exp, | |
2367 | struct dentry *dentry, u32 *bmval, | |
406a7ea9 | 2368 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
2369 | { |
2370 | u32 bmval0 = bmval[0]; | |
2371 | u32 bmval1 = bmval[1]; | |
7e705706 | 2372 | u32 bmval2 = bmval[2]; |
1da177e4 | 2373 | struct kstat stat; |
d50e6136 | 2374 | struct svc_fh *tempfh = NULL; |
1da177e4 | 2375 | struct kstatfs statfs; |
ddd1ea56 | 2376 | __be32 *p; |
1fcea5b2 | 2377 | int starting_len = xdr->buf->len; |
082d4bd7 BF |
2378 | int attrlen_offset; |
2379 | __be32 attrlen; | |
1da177e4 LT |
2380 | u32 dummy; |
2381 | u64 dummy64; | |
42ca0993 | 2382 | u32 rdattr_err = 0; |
b37ad28b | 2383 | __be32 status; |
b8dd7b9a | 2384 | int err; |
1da177e4 | 2385 | struct nfs4_acl *acl = NULL; |
18032ca0 DQ |
2386 | void *context = NULL; |
2387 | int contextlen; | |
2388 | bool contextsupport = false; | |
7e705706 AA |
2389 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
2390 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
2391 | struct path path = { |
2392 | .mnt = exp->ex_path.mnt, | |
2393 | .dentry = dentry, | |
2394 | }; | |
3d733711 | 2395 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
1da177e4 LT |
2396 | |
2397 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
916d2d84 | 2398 | BUG_ON(!nfsd_attrs_supported(minorversion, bmval)); |
1da177e4 | 2399 | |
42ca0993 | 2400 | if (exp->ex_fslocs.migrated) { |
c2227a39 | 2401 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &bmval2, &rdattr_err); |
42ca0993 BF |
2402 | if (status) |
2403 | goto out; | |
2404 | } | |
2405 | ||
a528d35e | 2406 | err = vfs_getattr(&path, &stat, STATX_BASIC_STATS, AT_STATX_SYNC_AS_STAT); |
b8dd7b9a | 2407 | if (err) |
1da177e4 | 2408 | goto out_nfserr; |
12337901 CH |
2409 | if ((bmval0 & (FATTR4_WORD0_FILES_AVAIL | FATTR4_WORD0_FILES_FREE | |
2410 | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
2411 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
2412 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 2413 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 2414 | if (err) |
1da177e4 LT |
2415 | goto out_nfserr; |
2416 | } | |
2417 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
d50e6136 BF |
2418 | tempfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); |
2419 | status = nfserr_jukebox; | |
2420 | if (!tempfh) | |
2421 | goto out; | |
2422 | fh_init(tempfh, NFS4_FHSIZE); | |
2423 | status = fh_compose(tempfh, exp, dentry, NULL); | |
1da177e4 LT |
2424 | if (status) |
2425 | goto out; | |
d50e6136 | 2426 | fhp = tempfh; |
1da177e4 | 2427 | } |
0c9d65e7 | 2428 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 2429 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
0c9d65e7 AG |
2430 | if (err == -EOPNOTSUPP) |
2431 | bmval0 &= ~FATTR4_WORD0_ACL; | |
2432 | else if (err == -EINVAL) { | |
2433 | status = nfserr_attrnotsupp; | |
2434 | goto out; | |
2435 | } else if (err != 0) | |
2436 | goto out_nfserr; | |
1da177e4 | 2437 | } |
1da177e4 | 2438 | |
18032ca0 | 2439 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
c2227a39 KM |
2440 | if ((bmval2 & FATTR4_WORD2_SECURITY_LABEL) || |
2441 | bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
32ddd944 BF |
2442 | if (exp->ex_flags & NFSEXP_SECURITY_LABEL) |
2443 | err = security_inode_getsecctx(d_inode(dentry), | |
18032ca0 | 2444 | &context, &contextlen); |
32ddd944 BF |
2445 | else |
2446 | err = -EOPNOTSUPP; | |
18032ca0 DQ |
2447 | contextsupport = (err == 0); |
2448 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { | |
2449 | if (err == -EOPNOTSUPP) | |
2450 | bmval2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2451 | else if (err) | |
2452 | goto out_nfserr; | |
2453 | } | |
2454 | } | |
2455 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ | |
2456 | ||
75976de6 KM |
2457 | status = nfsd4_encode_bitmap(xdr, bmval0, bmval1, bmval2); |
2458 | if (status) | |
2459 | goto out; | |
082d4bd7 BF |
2460 | |
2461 | attrlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
2462 | p = xdr_reserve_space(xdr, 4); |
2463 | if (!p) | |
2464 | goto out_resource; | |
082d4bd7 | 2465 | p++; /* to be backfilled later */ |
1da177e4 LT |
2466 | |
2467 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
dcd20869 BF |
2468 | u32 supp[3]; |
2469 | ||
2470 | memcpy(supp, nfsd_suppattrs[minorversion], sizeof(supp)); | |
7e705706 | 2471 | |
0c9d65e7 | 2472 | if (!IS_POSIXACL(dentry->d_inode)) |
916d2d84 | 2473 | supp[0] &= ~FATTR4_WORD0_ACL; |
18032ca0 | 2474 | if (!contextsupport) |
916d2d84 BF |
2475 | supp[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
2476 | if (!supp[2]) { | |
ddd1ea56 BF |
2477 | p = xdr_reserve_space(xdr, 12); |
2478 | if (!p) | |
2b44f1ba | 2479 | goto out_resource; |
c373b0a4 | 2480 | *p++ = cpu_to_be32(2); |
916d2d84 BF |
2481 | *p++ = cpu_to_be32(supp[0]); |
2482 | *p++ = cpu_to_be32(supp[1]); | |
7e705706 | 2483 | } else { |
ddd1ea56 BF |
2484 | p = xdr_reserve_space(xdr, 16); |
2485 | if (!p) | |
2b44f1ba | 2486 | goto out_resource; |
c373b0a4 | 2487 | *p++ = cpu_to_be32(3); |
916d2d84 BF |
2488 | *p++ = cpu_to_be32(supp[0]); |
2489 | *p++ = cpu_to_be32(supp[1]); | |
2490 | *p++ = cpu_to_be32(supp[2]); | |
7e705706 | 2491 | } |
1da177e4 LT |
2492 | } |
2493 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
ddd1ea56 BF |
2494 | p = xdr_reserve_space(xdr, 4); |
2495 | if (!p) | |
1da177e4 | 2496 | goto out_resource; |
3d2544b1 | 2497 | dummy = nfs4_file_type(stat.mode); |
6b6d8137 BF |
2498 | if (dummy == NF4BAD) { |
2499 | status = nfserr_serverfault; | |
2500 | goto out; | |
2501 | } | |
c373b0a4 | 2502 | *p++ = cpu_to_be32(dummy); |
1da177e4 LT |
2503 | } |
2504 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
ddd1ea56 BF |
2505 | p = xdr_reserve_space(xdr, 4); |
2506 | if (!p) | |
1da177e4 | 2507 | goto out_resource; |
49640001 | 2508 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
c373b0a4 | 2509 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT); |
49640001 | 2510 | else |
c373b0a4 BF |
2511 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT| |
2512 | NFS4_FH_VOL_RENAME); | |
1da177e4 LT |
2513 | } |
2514 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
ddd1ea56 BF |
2515 | p = xdr_reserve_space(xdr, 8); |
2516 | if (!p) | |
1da177e4 | 2517 | goto out_resource; |
b8800921 | 2518 | p = encode_change(p, &stat, d_inode(dentry), exp); |
1da177e4 LT |
2519 | } |
2520 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
ddd1ea56 BF |
2521 | p = xdr_reserve_space(xdr, 8); |
2522 | if (!p) | |
1da177e4 | 2523 | goto out_resource; |
b64c7f3b | 2524 | p = xdr_encode_hyper(p, stat.size); |
1da177e4 LT |
2525 | } |
2526 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
ddd1ea56 BF |
2527 | p = xdr_reserve_space(xdr, 4); |
2528 | if (!p) | |
1da177e4 | 2529 | goto out_resource; |
c373b0a4 | 2530 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2531 | } |
2532 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
ddd1ea56 BF |
2533 | p = xdr_reserve_space(xdr, 4); |
2534 | if (!p) | |
1da177e4 | 2535 | goto out_resource; |
c373b0a4 | 2536 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2537 | } |
2538 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
ddd1ea56 BF |
2539 | p = xdr_reserve_space(xdr, 4); |
2540 | if (!p) | |
1da177e4 | 2541 | goto out_resource; |
c373b0a4 | 2542 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2543 | } |
2544 | if (bmval0 & FATTR4_WORD0_FSID) { | |
ddd1ea56 BF |
2545 | p = xdr_reserve_space(xdr, 16); |
2546 | if (!p) | |
1da177e4 | 2547 | goto out_resource; |
42ca0993 | 2548 | if (exp->ex_fslocs.migrated) { |
b64c7f3b BF |
2549 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MAJOR); |
2550 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
2551 | } else switch(fsid_source(fhp)) { |
2552 | case FSIDSOURCE_FSID: | |
b64c7f3b BF |
2553 | p = xdr_encode_hyper(p, (u64)exp->ex_fsid); |
2554 | p = xdr_encode_hyper(p, (u64)0); | |
af6a4e28 N |
2555 | break; |
2556 | case FSIDSOURCE_DEV: | |
c373b0a4 BF |
2557 | *p++ = cpu_to_be32(0); |
2558 | *p++ = cpu_to_be32(MAJOR(stat.dev)); | |
2559 | *p++ = cpu_to_be32(0); | |
2560 | *p++ = cpu_to_be32(MINOR(stat.dev)); | |
af6a4e28 N |
2561 | break; |
2562 | case FSIDSOURCE_UUID: | |
94eb3689 KM |
2563 | p = xdr_encode_opaque_fixed(p, exp->ex_uuid, |
2564 | EX_UUID_LEN); | |
af6a4e28 | 2565 | break; |
1da177e4 LT |
2566 | } |
2567 | } | |
2568 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
ddd1ea56 BF |
2569 | p = xdr_reserve_space(xdr, 4); |
2570 | if (!p) | |
1da177e4 | 2571 | goto out_resource; |
c373b0a4 | 2572 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2573 | } |
2574 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
ddd1ea56 BF |
2575 | p = xdr_reserve_space(xdr, 4); |
2576 | if (!p) | |
1da177e4 | 2577 | goto out_resource; |
c373b0a4 | 2578 | *p++ = cpu_to_be32(nn->nfsd4_lease); |
1da177e4 LT |
2579 | } |
2580 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
ddd1ea56 BF |
2581 | p = xdr_reserve_space(xdr, 4); |
2582 | if (!p) | |
1da177e4 | 2583 | goto out_resource; |
c373b0a4 | 2584 | *p++ = cpu_to_be32(rdattr_err); |
1da177e4 LT |
2585 | } |
2586 | if (bmval0 & FATTR4_WORD0_ACL) { | |
2587 | struct nfs4_ace *ace; | |
1da177e4 LT |
2588 | |
2589 | if (acl == NULL) { | |
ddd1ea56 BF |
2590 | p = xdr_reserve_space(xdr, 4); |
2591 | if (!p) | |
1da177e4 LT |
2592 | goto out_resource; |
2593 | ||
c373b0a4 | 2594 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2595 | goto out_acl; |
2596 | } | |
ddd1ea56 BF |
2597 | p = xdr_reserve_space(xdr, 4); |
2598 | if (!p) | |
1da177e4 | 2599 | goto out_resource; |
c373b0a4 | 2600 | *p++ = cpu_to_be32(acl->naces); |
1da177e4 | 2601 | |
28e05dd8 | 2602 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
ddd1ea56 BF |
2603 | p = xdr_reserve_space(xdr, 4*3); |
2604 | if (!p) | |
1da177e4 | 2605 | goto out_resource; |
c373b0a4 BF |
2606 | *p++ = cpu_to_be32(ace->type); |
2607 | *p++ = cpu_to_be32(ace->flag); | |
2608 | *p++ = cpu_to_be32(ace->access_mask & | |
2609 | NFS4_ACE_MASK_ALL); | |
ddd1ea56 | 2610 | status = nfsd4_encode_aclname(xdr, rqstp, ace); |
1da177e4 LT |
2611 | if (status) |
2612 | goto out; | |
2613 | } | |
2614 | } | |
2615 | out_acl: | |
2616 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
ddd1ea56 BF |
2617 | p = xdr_reserve_space(xdr, 4); |
2618 | if (!p) | |
1da177e4 | 2619 | goto out_resource; |
0c9d65e7 | 2620 | *p++ = cpu_to_be32(IS_POSIXACL(dentry->d_inode) ? |
1da177e4 LT |
2621 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); |
2622 | } | |
2623 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
ddd1ea56 BF |
2624 | p = xdr_reserve_space(xdr, 4); |
2625 | if (!p) | |
1da177e4 | 2626 | goto out_resource; |
c373b0a4 | 2627 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2628 | } |
2629 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
ddd1ea56 BF |
2630 | p = xdr_reserve_space(xdr, 4); |
2631 | if (!p) | |
1da177e4 | 2632 | goto out_resource; |
c373b0a4 | 2633 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2634 | } |
2635 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
ddd1ea56 BF |
2636 | p = xdr_reserve_space(xdr, 4); |
2637 | if (!p) | |
1da177e4 | 2638 | goto out_resource; |
c373b0a4 | 2639 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2640 | } |
2641 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
ddd1ea56 BF |
2642 | p = xdr_reserve_space(xdr, 4); |
2643 | if (!p) | |
1da177e4 | 2644 | goto out_resource; |
c373b0a4 | 2645 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2646 | } |
2647 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
ddd1ea56 BF |
2648 | p = xdr_reserve_space(xdr, fhp->fh_handle.fh_size + 4); |
2649 | if (!p) | |
1da177e4 | 2650 | goto out_resource; |
0c0c267b BF |
2651 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, |
2652 | fhp->fh_handle.fh_size); | |
1da177e4 LT |
2653 | } |
2654 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
ddd1ea56 BF |
2655 | p = xdr_reserve_space(xdr, 8); |
2656 | if (!p) | |
1da177e4 | 2657 | goto out_resource; |
b64c7f3b | 2658 | p = xdr_encode_hyper(p, stat.ino); |
1da177e4 LT |
2659 | } |
2660 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
ddd1ea56 BF |
2661 | p = xdr_reserve_space(xdr, 8); |
2662 | if (!p) | |
1da177e4 | 2663 | goto out_resource; |
b64c7f3b | 2664 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
2665 | } |
2666 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
ddd1ea56 BF |
2667 | p = xdr_reserve_space(xdr, 8); |
2668 | if (!p) | |
1da177e4 | 2669 | goto out_resource; |
b64c7f3b | 2670 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
2671 | } |
2672 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
ddd1ea56 BF |
2673 | p = xdr_reserve_space(xdr, 8); |
2674 | if (!p) | |
1da177e4 | 2675 | goto out_resource; |
b64c7f3b | 2676 | p = xdr_encode_hyper(p, (u64) statfs.f_files); |
1da177e4 | 2677 | } |
81c3f413 | 2678 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
ddd1ea56 | 2679 | status = nfsd4_encode_fs_locations(xdr, rqstp, exp); |
81c3f413 BF |
2680 | if (status) |
2681 | goto out; | |
2682 | } | |
1da177e4 | 2683 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
ddd1ea56 BF |
2684 | p = xdr_reserve_space(xdr, 4); |
2685 | if (!p) | |
1da177e4 | 2686 | goto out_resource; |
c373b0a4 | 2687 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2688 | } |
2689 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
ddd1ea56 BF |
2690 | p = xdr_reserve_space(xdr, 8); |
2691 | if (!p) | |
1da177e4 | 2692 | goto out_resource; |
b64c7f3b | 2693 | p = xdr_encode_hyper(p, exp->ex_path.mnt->mnt_sb->s_maxbytes); |
1da177e4 LT |
2694 | } |
2695 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
ddd1ea56 BF |
2696 | p = xdr_reserve_space(xdr, 4); |
2697 | if (!p) | |
1da177e4 | 2698 | goto out_resource; |
c373b0a4 | 2699 | *p++ = cpu_to_be32(255); |
1da177e4 LT |
2700 | } |
2701 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
ddd1ea56 BF |
2702 | p = xdr_reserve_space(xdr, 4); |
2703 | if (!p) | |
1da177e4 | 2704 | goto out_resource; |
c373b0a4 | 2705 | *p++ = cpu_to_be32(statfs.f_namelen); |
1da177e4 LT |
2706 | } |
2707 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
ddd1ea56 BF |
2708 | p = xdr_reserve_space(xdr, 8); |
2709 | if (!p) | |
1da177e4 | 2710 | goto out_resource; |
b64c7f3b | 2711 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2712 | } |
2713 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
ddd1ea56 BF |
2714 | p = xdr_reserve_space(xdr, 8); |
2715 | if (!p) | |
1da177e4 | 2716 | goto out_resource; |
b64c7f3b | 2717 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2718 | } |
2719 | if (bmval1 & FATTR4_WORD1_MODE) { | |
ddd1ea56 BF |
2720 | p = xdr_reserve_space(xdr, 4); |
2721 | if (!p) | |
1da177e4 | 2722 | goto out_resource; |
c373b0a4 | 2723 | *p++ = cpu_to_be32(stat.mode & S_IALLUGO); |
1da177e4 LT |
2724 | } |
2725 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
ddd1ea56 BF |
2726 | p = xdr_reserve_space(xdr, 4); |
2727 | if (!p) | |
1da177e4 | 2728 | goto out_resource; |
c373b0a4 | 2729 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2730 | } |
2731 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
ddd1ea56 BF |
2732 | p = xdr_reserve_space(xdr, 4); |
2733 | if (!p) | |
1da177e4 | 2734 | goto out_resource; |
c373b0a4 | 2735 | *p++ = cpu_to_be32(stat.nlink); |
1da177e4 LT |
2736 | } |
2737 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
ddd1ea56 | 2738 | status = nfsd4_encode_user(xdr, rqstp, stat.uid); |
1da177e4 LT |
2739 | if (status) |
2740 | goto out; | |
2741 | } | |
2742 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
ddd1ea56 | 2743 | status = nfsd4_encode_group(xdr, rqstp, stat.gid); |
1da177e4 LT |
2744 | if (status) |
2745 | goto out; | |
2746 | } | |
2747 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
ddd1ea56 BF |
2748 | p = xdr_reserve_space(xdr, 8); |
2749 | if (!p) | |
1da177e4 | 2750 | goto out_resource; |
c373b0a4 BF |
2751 | *p++ = cpu_to_be32((u32) MAJOR(stat.rdev)); |
2752 | *p++ = cpu_to_be32((u32) MINOR(stat.rdev)); | |
1da177e4 LT |
2753 | } |
2754 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
ddd1ea56 BF |
2755 | p = xdr_reserve_space(xdr, 8); |
2756 | if (!p) | |
1da177e4 LT |
2757 | goto out_resource; |
2758 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
b64c7f3b | 2759 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2760 | } |
2761 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
ddd1ea56 BF |
2762 | p = xdr_reserve_space(xdr, 8); |
2763 | if (!p) | |
1da177e4 LT |
2764 | goto out_resource; |
2765 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
b64c7f3b | 2766 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2767 | } |
2768 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
ddd1ea56 BF |
2769 | p = xdr_reserve_space(xdr, 8); |
2770 | if (!p) | |
1da177e4 LT |
2771 | goto out_resource; |
2772 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
b64c7f3b | 2773 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2774 | } |
2775 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
ddd1ea56 BF |
2776 | p = xdr_reserve_space(xdr, 8); |
2777 | if (!p) | |
1da177e4 LT |
2778 | goto out_resource; |
2779 | dummy64 = (u64)stat.blocks << 9; | |
b64c7f3b | 2780 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2781 | } |
2782 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
ddd1ea56 BF |
2783 | p = xdr_reserve_space(xdr, 12); |
2784 | if (!p) | |
1da177e4 | 2785 | goto out_resource; |
b64c7f3b | 2786 | p = xdr_encode_hyper(p, (s64)stat.atime.tv_sec); |
c373b0a4 | 2787 | *p++ = cpu_to_be32(stat.atime.tv_nsec); |
1da177e4 LT |
2788 | } |
2789 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
ddd1ea56 BF |
2790 | p = xdr_reserve_space(xdr, 12); |
2791 | if (!p) | |
1da177e4 | 2792 | goto out_resource; |
c373b0a4 BF |
2793 | *p++ = cpu_to_be32(0); |
2794 | *p++ = cpu_to_be32(1); | |
2795 | *p++ = cpu_to_be32(0); | |
1da177e4 LT |
2796 | } |
2797 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
ddd1ea56 BF |
2798 | p = xdr_reserve_space(xdr, 12); |
2799 | if (!p) | |
1da177e4 | 2800 | goto out_resource; |
b64c7f3b | 2801 | p = xdr_encode_hyper(p, (s64)stat.ctime.tv_sec); |
c373b0a4 | 2802 | *p++ = cpu_to_be32(stat.ctime.tv_nsec); |
1da177e4 LT |
2803 | } |
2804 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
ddd1ea56 BF |
2805 | p = xdr_reserve_space(xdr, 12); |
2806 | if (!p) | |
1da177e4 | 2807 | goto out_resource; |
b64c7f3b | 2808 | p = xdr_encode_hyper(p, (s64)stat.mtime.tv_sec); |
c373b0a4 | 2809 | *p++ = cpu_to_be32(stat.mtime.tv_nsec); |
1da177e4 LT |
2810 | } |
2811 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
0a2050d7 KM |
2812 | struct kstat parent_stat; |
2813 | u64 ino = stat.ino; | |
2814 | ||
ddd1ea56 BF |
2815 | p = xdr_reserve_space(xdr, 8); |
2816 | if (!p) | |
1da177e4 | 2817 | goto out_resource; |
406a7ea9 FF |
2818 | /* |
2819 | * Get parent's attributes if not ignoring crossmount | |
2820 | * and this is the root of a cross-mounted filesystem. | |
2821 | */ | |
2822 | if (ignore_crossmnt == 0 && | |
0a2050d7 KM |
2823 | dentry == exp->ex_path.mnt->mnt_root) { |
2824 | err = get_parent_attributes(exp, &parent_stat); | |
2825 | if (err) | |
2826 | goto out_nfserr; | |
2827 | ino = parent_stat.ino; | |
2828 | } | |
2829 | p = xdr_encode_hyper(p, ino); | |
1da177e4 | 2830 | } |
9cf514cc | 2831 | #ifdef CONFIG_NFSD_PNFS |
6896f15a | 2832 | if (bmval1 & FATTR4_WORD1_FS_LAYOUT_TYPES) { |
8a4c3926 | 2833 | status = nfsd4_encode_layout_types(xdr, exp->ex_layout_types); |
6896f15a KM |
2834 | if (status) |
2835 | goto out; | |
2836 | } | |
2837 | ||
2838 | if (bmval2 & FATTR4_WORD2_LAYOUT_TYPES) { | |
8a4c3926 | 2839 | status = nfsd4_encode_layout_types(xdr, exp->ex_layout_types); |
6896f15a KM |
2840 | if (status) |
2841 | goto out; | |
9cf514cc CH |
2842 | } |
2843 | ||
2844 | if (bmval2 & FATTR4_WORD2_LAYOUT_BLKSIZE) { | |
2845 | p = xdr_reserve_space(xdr, 4); | |
2846 | if (!p) | |
2847 | goto out_resource; | |
2848 | *p++ = cpu_to_be32(stat.blksize); | |
2849 | } | |
2850 | #endif /* CONFIG_NFSD_PNFS */ | |
8c18f205 | 2851 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
b26b78cb TM |
2852 | u32 supp[3]; |
2853 | ||
2854 | memcpy(supp, nfsd_suppattrs[minorversion], sizeof(supp)); | |
2855 | supp[0] &= NFSD_SUPPATTR_EXCLCREAT_WORD0; | |
2856 | supp[1] &= NFSD_SUPPATTR_EXCLCREAT_WORD1; | |
2857 | supp[2] &= NFSD_SUPPATTR_EXCLCREAT_WORD2; | |
2858 | ||
2859 | status = nfsd4_encode_bitmap(xdr, supp[0], supp[1], supp[2]); | |
75976de6 KM |
2860 | if (status) |
2861 | goto out; | |
8c18f205 | 2862 | } |
7e705706 | 2863 | |
7d580722 KM |
2864 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { |
2865 | status = nfsd4_encode_security_label(xdr, rqstp, context, | |
2866 | contextlen); | |
2867 | if (status) | |
2868 | goto out; | |
2869 | } | |
2870 | ||
082d4bd7 BF |
2871 | attrlen = htonl(xdr->buf->len - attrlen_offset - 4); |
2872 | write_bytes_to_xdr_buf(xdr->buf, attrlen_offset, &attrlen, 4); | |
1da177e4 LT |
2873 | status = nfs_ok; |
2874 | ||
2875 | out: | |
ba4e55bb | 2876 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
18032ca0 DQ |
2877 | if (context) |
2878 | security_release_secctx(context, contextlen); | |
ba4e55bb | 2879 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ |
28e05dd8 | 2880 | kfree(acl); |
18df11d0 | 2881 | if (tempfh) { |
d50e6136 | 2882 | fh_put(tempfh); |
18df11d0 YZ |
2883 | kfree(tempfh); |
2884 | } | |
1fcea5b2 BF |
2885 | if (status) |
2886 | xdr_truncate_encode(xdr, starting_len); | |
1da177e4 LT |
2887 | return status; |
2888 | out_nfserr: | |
b8dd7b9a | 2889 | status = nfserrno(err); |
1da177e4 LT |
2890 | goto out; |
2891 | out_resource: | |
1da177e4 LT |
2892 | status = nfserr_resource; |
2893 | goto out; | |
1da177e4 LT |
2894 | } |
2895 | ||
2825a7f9 BF |
2896 | static void svcxdr_init_encode_from_buffer(struct xdr_stream *xdr, |
2897 | struct xdr_buf *buf, __be32 *p, int bytes) | |
2898 | { | |
2899 | xdr->scratch.iov_len = 0; | |
2900 | memset(buf, 0, sizeof(struct xdr_buf)); | |
2901 | buf->head[0].iov_base = p; | |
2902 | buf->head[0].iov_len = 0; | |
2903 | buf->len = 0; | |
2904 | xdr->buf = buf; | |
2905 | xdr->iov = buf->head; | |
2906 | xdr->p = p; | |
2907 | xdr->end = (void *)p + bytes; | |
2908 | buf->buflen = bytes; | |
2909 | } | |
2910 | ||
d5184658 BF |
2911 | __be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words, |
2912 | struct svc_fh *fhp, struct svc_export *exp, | |
2913 | struct dentry *dentry, u32 *bmval, | |
2914 | struct svc_rqst *rqstp, int ignore_crossmnt) | |
2915 | { | |
2825a7f9 | 2916 | struct xdr_buf dummy; |
d5184658 BF |
2917 | struct xdr_stream xdr; |
2918 | __be32 ret; | |
2919 | ||
2825a7f9 | 2920 | svcxdr_init_encode_from_buffer(&xdr, &dummy, *p, words << 2); |
d5184658 BF |
2921 | ret = nfsd4_encode_fattr(&xdr, fhp, exp, dentry, bmval, rqstp, |
2922 | ignore_crossmnt); | |
2923 | *p = xdr.p; | |
2924 | return ret; | |
2925 | } | |
2926 | ||
c0ce6ec8 BF |
2927 | static inline int attributes_need_mount(u32 *bmval) |
2928 | { | |
2929 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2930 | return 1; | |
2931 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2932 | return 1; | |
2933 | return 0; | |
2934 | } | |
2935 | ||
b37ad28b | 2936 | static __be32 |
561f0ed4 BF |
2937 | nfsd4_encode_dirent_fattr(struct xdr_stream *xdr, struct nfsd4_readdir *cd, |
2938 | const char *name, int namlen) | |
1da177e4 LT |
2939 | { |
2940 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2941 | struct dentry *dentry; | |
b37ad28b | 2942 | __be32 nfserr; |
406a7ea9 | 2943 | int ignore_crossmnt = 0; |
1da177e4 | 2944 | |
bbddca8e | 2945 | dentry = lookup_one_len_unlocked(name, cd->rd_fhp->fh_dentry, namlen); |
1da177e4 LT |
2946 | if (IS_ERR(dentry)) |
2947 | return nfserrno(PTR_ERR(dentry)); | |
2b0143b5 | 2948 | if (d_really_is_negative(dentry)) { |
b2c0cea6 | 2949 | /* |
bbddca8e N |
2950 | * we're not holding the i_mutex here, so there's |
2951 | * a window where this directory entry could have gone | |
2952 | * away. | |
b2c0cea6 BF |
2953 | */ |
2954 | dput(dentry); | |
2955 | return nfserr_noent; | |
2956 | } | |
1da177e4 LT |
2957 | |
2958 | exp_get(exp); | |
406a7ea9 FF |
2959 | /* |
2960 | * In the case of a mountpoint, the client may be asking for | |
2961 | * attributes that are only properties of the underlying filesystem | |
2962 | * as opposed to the cross-mounted file system. In such a case, | |
2963 | * we will not follow the cross mount and will fill the attribtutes | |
2964 | * directly from the mountpoint dentry. | |
2965 | */ | |
3227fa41 | 2966 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
2967 | int err; |
2968 | ||
3227fa41 BF |
2969 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
2970 | && !attributes_need_mount(cd->rd_bmval)) { | |
2971 | ignore_crossmnt = 1; | |
2972 | goto out_encode; | |
2973 | } | |
dcb488a3 AA |
2974 | /* |
2975 | * Why the heck aren't we just using nfsd_lookup?? | |
2976 | * Different "."/".." handling? Something else? | |
2977 | * At least, add a comment here to explain.... | |
2978 | */ | |
021d3a72 BF |
2979 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
2980 | if (err) { | |
2981 | nfserr = nfserrno(err); | |
1da177e4 LT |
2982 | goto out_put; |
2983 | } | |
dcb488a3 AA |
2984 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
2985 | if (nfserr) | |
2986 | goto out_put; | |
1da177e4 LT |
2987 | |
2988 | } | |
3227fa41 | 2989 | out_encode: |
561f0ed4 | 2990 | nfserr = nfsd4_encode_fattr(xdr, NULL, exp, dentry, cd->rd_bmval, |
406a7ea9 | 2991 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
2992 | out_put: |
2993 | dput(dentry); | |
2994 | exp_put(exp); | |
2995 | return nfserr; | |
2996 | } | |
2997 | ||
2ebbc012 | 2998 | static __be32 * |
561f0ed4 | 2999 | nfsd4_encode_rdattr_error(struct xdr_stream *xdr, __be32 nfserr) |
1da177e4 | 3000 | { |
561f0ed4 BF |
3001 | __be32 *p; |
3002 | ||
c3a45617 | 3003 | p = xdr_reserve_space(xdr, 20); |
561f0ed4 | 3004 | if (!p) |
1da177e4 LT |
3005 | return NULL; |
3006 | *p++ = htonl(2); | |
3007 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
3008 | *p++ = htonl(0); /* bmval1 */ | |
3009 | ||
87915c64 | 3010 | *p++ = htonl(4); /* attribute length */ |
1da177e4 | 3011 | *p++ = nfserr; /* no htonl */ |
1da177e4 LT |
3012 | return p; |
3013 | } | |
3014 | ||
3015 | static int | |
a0ad13ef N |
3016 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
3017 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 3018 | { |
a0ad13ef | 3019 | struct readdir_cd *ccd = ccdv; |
1da177e4 | 3020 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
561f0ed4 BF |
3021 | struct xdr_stream *xdr = cd->xdr; |
3022 | int start_offset = xdr->buf->len; | |
3023 | int cookie_offset; | |
aee37764 | 3024 | u32 name_and_cookie; |
561f0ed4 | 3025 | int entry_bytes; |
b37ad28b | 3026 | __be32 nfserr = nfserr_toosmall; |
561f0ed4 BF |
3027 | __be64 wire_offset; |
3028 | __be32 *p; | |
1da177e4 LT |
3029 | |
3030 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
3031 | if (name && isdotent(name, namlen)) { | |
3032 | cd->common.err = nfs_ok; | |
3033 | return 0; | |
3034 | } | |
3035 | ||
561f0ed4 BF |
3036 | if (cd->cookie_offset) { |
3037 | wire_offset = cpu_to_be64(offset); | |
3038 | write_bytes_to_xdr_buf(xdr->buf, cd->cookie_offset, | |
3039 | &wire_offset, 8); | |
3040 | } | |
1da177e4 | 3041 | |
561f0ed4 BF |
3042 | p = xdr_reserve_space(xdr, 4); |
3043 | if (!p) | |
1da177e4 | 3044 | goto fail; |
1da177e4 | 3045 | *p++ = xdr_one; /* mark entry present */ |
561f0ed4 BF |
3046 | cookie_offset = xdr->buf->len; |
3047 | p = xdr_reserve_space(xdr, 3*4 + namlen); | |
3048 | if (!p) | |
3049 | goto fail; | |
1da177e4 LT |
3050 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
3051 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
3052 | ||
561f0ed4 | 3053 | nfserr = nfsd4_encode_dirent_fattr(xdr, cd, name, namlen); |
1da177e4 LT |
3054 | switch (nfserr) { |
3055 | case nfs_ok: | |
1da177e4 LT |
3056 | break; |
3057 | case nfserr_resource: | |
3058 | nfserr = nfserr_toosmall; | |
3059 | goto fail; | |
b2c0cea6 | 3060 | case nfserr_noent: |
f41c5ad2 | 3061 | xdr_truncate_encode(xdr, start_offset); |
b2c0cea6 | 3062 | goto skip_entry; |
1da177e4 LT |
3063 | default: |
3064 | /* | |
3065 | * If the client requested the RDATTR_ERROR attribute, | |
3066 | * we stuff the error code into this attribute | |
3067 | * and continue. If this attribute was not requested, | |
3068 | * then in accordance with the spec, we fail the | |
3069 | * entire READDIR operation(!) | |
3070 | */ | |
3071 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
3072 | goto fail; | |
561f0ed4 | 3073 | p = nfsd4_encode_rdattr_error(xdr, nfserr); |
34081efc FI |
3074 | if (p == NULL) { |
3075 | nfserr = nfserr_toosmall; | |
1da177e4 | 3076 | goto fail; |
34081efc | 3077 | } |
1da177e4 | 3078 | } |
561f0ed4 BF |
3079 | nfserr = nfserr_toosmall; |
3080 | entry_bytes = xdr->buf->len - start_offset; | |
3081 | if (entry_bytes > cd->rd_maxcount) | |
3082 | goto fail; | |
3083 | cd->rd_maxcount -= entry_bytes; | |
aee37764 BF |
3084 | /* |
3085 | * RFC 3530 14.2.24 describes rd_dircount as only a "hint", so | |
3086 | * let's always let through the first entry, at least: | |
3087 | */ | |
0ec016e3 BF |
3088 | if (!cd->rd_dircount) |
3089 | goto fail; | |
3090 | name_and_cookie = 4 + 4 * XDR_QUADLEN(namlen) + 8; | |
aee37764 BF |
3091 | if (name_and_cookie > cd->rd_dircount && cd->cookie_offset) |
3092 | goto fail; | |
3093 | cd->rd_dircount -= min(cd->rd_dircount, name_and_cookie); | |
0ec016e3 | 3094 | |
561f0ed4 | 3095 | cd->cookie_offset = cookie_offset; |
b2c0cea6 | 3096 | skip_entry: |
1da177e4 LT |
3097 | cd->common.err = nfs_ok; |
3098 | return 0; | |
3099 | fail: | |
561f0ed4 | 3100 | xdr_truncate_encode(xdr, start_offset); |
1da177e4 LT |
3101 | cd->common.err = nfserr; |
3102 | return -EINVAL; | |
3103 | } | |
3104 | ||
d0a381dd BF |
3105 | static __be32 |
3106 | nfsd4_encode_stateid(struct xdr_stream *xdr, stateid_t *sid) | |
e2f282b9 | 3107 | { |
bc749ca4 | 3108 | __be32 *p; |
e2f282b9 | 3109 | |
d0a381dd BF |
3110 | p = xdr_reserve_space(xdr, sizeof(stateid_t)); |
3111 | if (!p) | |
3112 | return nfserr_resource; | |
c373b0a4 | 3113 | *p++ = cpu_to_be32(sid->si_generation); |
0c0c267b BF |
3114 | p = xdr_encode_opaque_fixed(p, &sid->si_opaque, |
3115 | sizeof(stateid_opaque_t)); | |
d0a381dd | 3116 | return 0; |
e2f282b9 BH |
3117 | } |
3118 | ||
695e12f8 | 3119 | static __be32 |
b37ad28b | 3120 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 3121 | { |
d0a381dd | 3122 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3123 | __be32 *p; |
1da177e4 | 3124 | |
bac966d6 BF |
3125 | p = xdr_reserve_space(xdr, 8); |
3126 | if (!p) | |
3127 | return nfserr_resource; | |
3128 | *p++ = cpu_to_be32(access->ac_supported); | |
3129 | *p++ = cpu_to_be32(access->ac_resp_access); | |
3130 | return 0; | |
1da177e4 LT |
3131 | } |
3132 | ||
1d1bc8f2 BF |
3133 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
3134 | { | |
d0a381dd | 3135 | struct xdr_stream *xdr = &resp->xdr; |
1d1bc8f2 BF |
3136 | __be32 *p; |
3137 | ||
bac966d6 BF |
3138 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 8); |
3139 | if (!p) | |
3140 | return nfserr_resource; | |
3141 | p = xdr_encode_opaque_fixed(p, bcts->sessionid.data, | |
3142 | NFS4_MAX_SESSIONID_LEN); | |
3143 | *p++ = cpu_to_be32(bcts->dir); | |
3144 | /* Upshifting from TCP to RDMA is not supported */ | |
3145 | *p++ = cpu_to_be32(0); | |
3146 | return 0; | |
1d1bc8f2 BF |
3147 | } |
3148 | ||
695e12f8 | 3149 | static __be32 |
b37ad28b | 3150 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 | 3151 | { |
d0a381dd BF |
3152 | struct xdr_stream *xdr = &resp->xdr; |
3153 | ||
bac966d6 | 3154 | return nfsd4_encode_stateid(xdr, &close->cl_stateid); |
1da177e4 LT |
3155 | } |
3156 | ||
3157 | ||
695e12f8 | 3158 | static __be32 |
b37ad28b | 3159 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 3160 | { |
d0a381dd | 3161 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3162 | __be32 *p; |
1da177e4 | 3163 | |
bac966d6 BF |
3164 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
3165 | if (!p) | |
3166 | return nfserr_resource; | |
3167 | p = xdr_encode_opaque_fixed(p, commit->co_verf.data, | |
0c0c267b | 3168 | NFS4_VERIFIER_SIZE); |
bac966d6 | 3169 | return 0; |
1da177e4 LT |
3170 | } |
3171 | ||
695e12f8 | 3172 | static __be32 |
b37ad28b | 3173 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 3174 | { |
d0a381dd | 3175 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3176 | __be32 *p; |
1da177e4 | 3177 | |
bac966d6 BF |
3178 | p = xdr_reserve_space(xdr, 20); |
3179 | if (!p) | |
3180 | return nfserr_resource; | |
3181 | encode_cinfo(p, &create->cr_cinfo); | |
3182 | nfserr = nfsd4_encode_bitmap(xdr, create->cr_bmval[0], | |
3183 | create->cr_bmval[1], create->cr_bmval[2]); | |
3184 | return 0; | |
1da177e4 LT |
3185 | } |
3186 | ||
b37ad28b AV |
3187 | static __be32 |
3188 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
3189 | { |
3190 | struct svc_fh *fhp = getattr->ga_fhp; | |
d5184658 | 3191 | struct xdr_stream *xdr = &resp->xdr; |
1da177e4 | 3192 | |
bac966d6 BF |
3193 | return nfsd4_encode_fattr(xdr, fhp, fhp->fh_export, fhp->fh_dentry, |
3194 | getattr->ga_bmval, resp->rqstp, 0); | |
1da177e4 LT |
3195 | } |
3196 | ||
695e12f8 BH |
3197 | static __be32 |
3198 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 3199 | { |
d0a381dd | 3200 | struct xdr_stream *xdr = &resp->xdr; |
695e12f8 | 3201 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 3202 | unsigned int len; |
bc749ca4 | 3203 | __be32 *p; |
1da177e4 | 3204 | |
bac966d6 BF |
3205 | len = fhp->fh_handle.fh_size; |
3206 | p = xdr_reserve_space(xdr, len + 4); | |
3207 | if (!p) | |
3208 | return nfserr_resource; | |
3209 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, len); | |
3210 | return 0; | |
1da177e4 LT |
3211 | } |
3212 | ||
3213 | /* | |
3214 | * Including all fields other than the name, a LOCK4denied structure requires | |
3215 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
3216 | */ | |
d0a381dd BF |
3217 | static __be32 |
3218 | nfsd4_encode_lock_denied(struct xdr_stream *xdr, struct nfsd4_lock_denied *ld) | |
1da177e4 | 3219 | { |
7c13f344 | 3220 | struct xdr_netobj *conf = &ld->ld_owner; |
bc749ca4 | 3221 | __be32 *p; |
1da177e4 | 3222 | |
8c7424cf | 3223 | again: |
d0a381dd | 3224 | p = xdr_reserve_space(xdr, 32 + XDR_LEN(conf->len)); |
8c7424cf BF |
3225 | if (!p) { |
3226 | /* | |
3227 | * Don't fail to return the result just because we can't | |
3228 | * return the conflicting open: | |
3229 | */ | |
3230 | if (conf->len) { | |
f98bac5a | 3231 | kfree(conf->data); |
8c7424cf BF |
3232 | conf->len = 0; |
3233 | conf->data = NULL; | |
3234 | goto again; | |
3235 | } | |
d0a381dd | 3236 | return nfserr_resource; |
8c7424cf | 3237 | } |
b64c7f3b BF |
3238 | p = xdr_encode_hyper(p, ld->ld_start); |
3239 | p = xdr_encode_hyper(p, ld->ld_length); | |
c373b0a4 | 3240 | *p++ = cpu_to_be32(ld->ld_type); |
7c13f344 | 3241 | if (conf->len) { |
0c0c267b BF |
3242 | p = xdr_encode_opaque_fixed(p, &ld->ld_clientid, 8); |
3243 | p = xdr_encode_opaque(p, conf->data, conf->len); | |
f98bac5a | 3244 | kfree(conf->data); |
1da177e4 | 3245 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
b64c7f3b | 3246 | p = xdr_encode_hyper(p, (u64)0); /* clientid */ |
c373b0a4 | 3247 | *p++ = cpu_to_be32(0); /* length of owner name */ |
1da177e4 | 3248 | } |
d0a381dd | 3249 | return nfserr_denied; |
1da177e4 LT |
3250 | } |
3251 | ||
695e12f8 | 3252 | static __be32 |
b37ad28b | 3253 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 3254 | { |
d0a381dd BF |
3255 | struct xdr_stream *xdr = &resp->xdr; |
3256 | ||
e2f282b9 | 3257 | if (!nfserr) |
d0a381dd | 3258 | nfserr = nfsd4_encode_stateid(xdr, &lock->lk_resp_stateid); |
e2f282b9 | 3259 | else if (nfserr == nfserr_denied) |
d0a381dd | 3260 | nfserr = nfsd4_encode_lock_denied(xdr, &lock->lk_denied); |
f98bac5a | 3261 | |
695e12f8 | 3262 | return nfserr; |
1da177e4 LT |
3263 | } |
3264 | ||
695e12f8 | 3265 | static __be32 |
b37ad28b | 3266 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 | 3267 | { |
d0a381dd BF |
3268 | struct xdr_stream *xdr = &resp->xdr; |
3269 | ||
1da177e4 | 3270 | if (nfserr == nfserr_denied) |
d0a381dd | 3271 | nfsd4_encode_lock_denied(xdr, &lockt->lt_denied); |
695e12f8 | 3272 | return nfserr; |
1da177e4 LT |
3273 | } |
3274 | ||
695e12f8 | 3275 | static __be32 |
b37ad28b | 3276 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 | 3277 | { |
d0a381dd BF |
3278 | struct xdr_stream *xdr = &resp->xdr; |
3279 | ||
bac966d6 | 3280 | return nfsd4_encode_stateid(xdr, &locku->lu_stateid); |
1da177e4 LT |
3281 | } |
3282 | ||
3283 | ||
695e12f8 | 3284 | static __be32 |
b37ad28b | 3285 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 3286 | { |
d0a381dd | 3287 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3288 | __be32 *p; |
1da177e4 | 3289 | |
bac966d6 BF |
3290 | p = xdr_reserve_space(xdr, 20); |
3291 | if (!p) | |
3292 | return nfserr_resource; | |
3293 | p = encode_cinfo(p, &link->li_cinfo); | |
3294 | return 0; | |
1da177e4 LT |
3295 | } |
3296 | ||
3297 | ||
695e12f8 | 3298 | static __be32 |
b37ad28b | 3299 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 3300 | { |
d0a381dd | 3301 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3302 | __be32 *p; |
1da177e4 | 3303 | |
d0a381dd BF |
3304 | nfserr = nfsd4_encode_stateid(xdr, &open->op_stateid); |
3305 | if (nfserr) | |
bac966d6 | 3306 | return nfserr; |
75976de6 | 3307 | p = xdr_reserve_space(xdr, 24); |
d0a381dd BF |
3308 | if (!p) |
3309 | return nfserr_resource; | |
d05d5744 | 3310 | p = encode_cinfo(p, &open->op_cinfo); |
c373b0a4 | 3311 | *p++ = cpu_to_be32(open->op_rflags); |
1da177e4 | 3312 | |
75976de6 KM |
3313 | nfserr = nfsd4_encode_bitmap(xdr, open->op_bmval[0], open->op_bmval[1], |
3314 | open->op_bmval[2]); | |
3315 | if (nfserr) | |
bac966d6 | 3316 | return nfserr; |
75976de6 KM |
3317 | |
3318 | p = xdr_reserve_space(xdr, 4); | |
3319 | if (!p) | |
3320 | return nfserr_resource; | |
3321 | ||
3322 | *p++ = cpu_to_be32(open->op_delegate_type); | |
1da177e4 LT |
3323 | switch (open->op_delegate_type) { |
3324 | case NFS4_OPEN_DELEGATE_NONE: | |
3325 | break; | |
3326 | case NFS4_OPEN_DELEGATE_READ: | |
d0a381dd BF |
3327 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
3328 | if (nfserr) | |
3329 | return nfserr; | |
3330 | p = xdr_reserve_space(xdr, 20); | |
3331 | if (!p) | |
3332 | return nfserr_resource; | |
c373b0a4 | 3333 | *p++ = cpu_to_be32(open->op_recall); |
1da177e4 LT |
3334 | |
3335 | /* | |
3336 | * TODO: ACE's in delegations | |
3337 | */ | |
c373b0a4 BF |
3338 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
3339 | *p++ = cpu_to_be32(0); | |
3340 | *p++ = cpu_to_be32(0); | |
3341 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 LT |
3342 | break; |
3343 | case NFS4_OPEN_DELEGATE_WRITE: | |
d0a381dd BF |
3344 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
3345 | if (nfserr) | |
3346 | return nfserr; | |
3347 | p = xdr_reserve_space(xdr, 32); | |
3348 | if (!p) | |
3349 | return nfserr_resource; | |
c373b0a4 | 3350 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
3351 | |
3352 | /* | |
3353 | * TODO: space_limit's in delegations | |
3354 | */ | |
c373b0a4 BF |
3355 | *p++ = cpu_to_be32(NFS4_LIMIT_SIZE); |
3356 | *p++ = cpu_to_be32(~(u32)0); | |
3357 | *p++ = cpu_to_be32(~(u32)0); | |
1da177e4 LT |
3358 | |
3359 | /* | |
3360 | * TODO: ACE's in delegations | |
3361 | */ | |
c373b0a4 BF |
3362 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
3363 | *p++ = cpu_to_be32(0); | |
3364 | *p++ = cpu_to_be32(0); | |
3365 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 | 3366 | break; |
d24433cd BH |
3367 | case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */ |
3368 | switch (open->op_why_no_deleg) { | |
3369 | case WND4_CONTENTION: | |
3370 | case WND4_RESOURCE: | |
d0a381dd BF |
3371 | p = xdr_reserve_space(xdr, 8); |
3372 | if (!p) | |
3373 | return nfserr_resource; | |
c373b0a4 BF |
3374 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
3375 | /* deleg signaling not supported yet: */ | |
3376 | *p++ = cpu_to_be32(0); | |
d24433cd BH |
3377 | break; |
3378 | default: | |
d0a381dd BF |
3379 | p = xdr_reserve_space(xdr, 4); |
3380 | if (!p) | |
3381 | return nfserr_resource; | |
c373b0a4 | 3382 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
d24433cd | 3383 | } |
d24433cd | 3384 | break; |
1da177e4 LT |
3385 | default: |
3386 | BUG(); | |
3387 | } | |
3388 | /* XXX save filehandle here */ | |
bac966d6 | 3389 | return 0; |
1da177e4 LT |
3390 | } |
3391 | ||
695e12f8 | 3392 | static __be32 |
b37ad28b | 3393 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 | 3394 | { |
d0a381dd BF |
3395 | struct xdr_stream *xdr = &resp->xdr; |
3396 | ||
bac966d6 | 3397 | return nfsd4_encode_stateid(xdr, &oc->oc_resp_stateid); |
1da177e4 LT |
3398 | } |
3399 | ||
695e12f8 | 3400 | static __be32 |
b37ad28b | 3401 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 | 3402 | { |
d0a381dd BF |
3403 | struct xdr_stream *xdr = &resp->xdr; |
3404 | ||
bac966d6 | 3405 | return nfsd4_encode_stateid(xdr, &od->od_stateid); |
1da177e4 LT |
3406 | } |
3407 | ||
dc97618d BF |
3408 | static __be32 nfsd4_encode_splice_read( |
3409 | struct nfsd4_compoundres *resp, | |
3410 | struct nfsd4_read *read, | |
3411 | struct file *file, unsigned long maxcount) | |
1da177e4 | 3412 | { |
ddd1ea56 | 3413 | struct xdr_stream *xdr = &resp->xdr; |
34a78b48 | 3414 | struct xdr_buf *buf = xdr->buf; |
dc97618d | 3415 | u32 eof; |
ac503e4a | 3416 | long len; |
30596768 | 3417 | int space_left; |
dc97618d | 3418 | __be32 nfserr; |
fec25fa4 | 3419 | __be32 *p = xdr->p - 2; |
1da177e4 | 3420 | |
d5d5c304 KM |
3421 | /* Make sure there will be room for padding if needed */ |
3422 | if (xdr->end - xdr->p < 1) | |
d0a381dd | 3423 | return nfserr_resource; |
dc97618d | 3424 | |
ac503e4a | 3425 | len = maxcount; |
dc97618d BF |
3426 | nfserr = nfsd_splice_read(read->rd_rqstp, file, |
3427 | read->rd_offset, &maxcount); | |
3428 | if (nfserr) { | |
3429 | /* | |
3430 | * nfsd_splice_actor may have already messed with the | |
3431 | * page length; reset it so as not to confuse | |
3432 | * xdr_truncate_encode: | |
3433 | */ | |
34a78b48 | 3434 | buf->page_len = 0; |
dc97618d | 3435 | return nfserr; |
b0e35fda | 3436 | } |
1da177e4 | 3437 | |
ac503e4a BC |
3438 | eof = nfsd_eof_on_read(len, maxcount, read->rd_offset, |
3439 | d_inode(read->rd_fhp->fh_dentry)->i_size); | |
4e21ac4b | 3440 | |
fec25fa4 BF |
3441 | *(p++) = htonl(eof); |
3442 | *(p++) = htonl(maxcount); | |
dc97618d | 3443 | |
34a78b48 BF |
3444 | buf->page_len = maxcount; |
3445 | buf->len += maxcount; | |
15b23ef5 BF |
3446 | xdr->page_ptr += (buf->page_base + maxcount + PAGE_SIZE - 1) |
3447 | / PAGE_SIZE; | |
dc97618d BF |
3448 | |
3449 | /* Use rest of head for padding and remaining ops: */ | |
34a78b48 BF |
3450 | buf->tail[0].iov_base = xdr->p; |
3451 | buf->tail[0].iov_len = 0; | |
fec25fa4 | 3452 | xdr->iov = buf->tail; |
dc97618d | 3453 | if (maxcount&3) { |
fec25fa4 BF |
3454 | int pad = 4 - (maxcount&3); |
3455 | ||
3456 | *(xdr->p++) = 0; | |
3457 | ||
34a78b48 | 3458 | buf->tail[0].iov_base += maxcount&3; |
fec25fa4 BF |
3459 | buf->tail[0].iov_len = pad; |
3460 | buf->len += pad; | |
b0e35fda | 3461 | } |
2825a7f9 | 3462 | |
dc97618d | 3463 | space_left = min_t(int, (void *)xdr->end - (void *)xdr->p, |
34a78b48 BF |
3464 | buf->buflen - buf->len); |
3465 | buf->buflen = buf->len + space_left; | |
dc97618d BF |
3466 | xdr->end = (__be32 *)((void *)xdr->end + space_left); |
3467 | ||
3468 | return 0; | |
3469 | } | |
3470 | ||
3471 | static __be32 nfsd4_encode_readv(struct nfsd4_compoundres *resp, | |
3472 | struct nfsd4_read *read, | |
3473 | struct file *file, unsigned long maxcount) | |
3474 | { | |
3475 | struct xdr_stream *xdr = &resp->xdr; | |
3476 | u32 eof; | |
3477 | int v; | |
dc97618d | 3478 | int starting_len = xdr->buf->len - 8; |
dc97618d | 3479 | long len; |
b0420980 | 3480 | int thislen; |
dc97618d BF |
3481 | __be32 nfserr; |
3482 | __be32 tmp; | |
3483 | __be32 *p; | |
b0420980 BF |
3484 | u32 zzz = 0; |
3485 | int pad; | |
1da177e4 LT |
3486 | |
3487 | len = maxcount; | |
3488 | v = 0; | |
6ff9897d | 3489 | |
1055414f | 3490 | thislen = min_t(long, len, ((void *)xdr->end - (void *)xdr->p)); |
b0420980 BF |
3491 | p = xdr_reserve_space(xdr, (thislen+3)&~3); |
3492 | WARN_ON_ONCE(!p); | |
3493 | resp->rqstp->rq_vec[v].iov_base = p; | |
3494 | resp->rqstp->rq_vec[v].iov_len = thislen; | |
3495 | v++; | |
3496 | len -= thislen; | |
3497 | ||
3498 | while (len) { | |
6ff9897d | 3499 | thislen = min_t(long, len, PAGE_SIZE); |
b0420980 BF |
3500 | p = xdr_reserve_space(xdr, (thislen+3)&~3); |
3501 | WARN_ON_ONCE(!p); | |
3502 | resp->rqstp->rq_vec[v].iov_base = p; | |
6ff9897d | 3503 | resp->rqstp->rq_vec[v].iov_len = thislen; |
1da177e4 | 3504 | v++; |
6ff9897d | 3505 | len -= thislen; |
1da177e4 LT |
3506 | } |
3507 | read->rd_vlen = v; | |
3508 | ||
ac503e4a | 3509 | len = maxcount; |
dc97618d BF |
3510 | nfserr = nfsd_readv(file, read->rd_offset, resp->rqstp->rq_vec, |
3511 | read->rd_vlen, &maxcount); | |
3512 | if (nfserr) | |
1da177e4 | 3513 | return nfserr; |
b0420980 | 3514 | xdr_truncate_encode(xdr, starting_len + 8 + ((maxcount+3)&~3)); |
dc97618d | 3515 | |
ac503e4a BC |
3516 | eof = nfsd_eof_on_read(len, maxcount, read->rd_offset, |
3517 | d_inode(read->rd_fhp->fh_dentry)->i_size); | |
1da177e4 | 3518 | |
dc97618d BF |
3519 | tmp = htonl(eof); |
3520 | write_bytes_to_xdr_buf(xdr->buf, starting_len , &tmp, 4); | |
3521 | tmp = htonl(maxcount); | |
3522 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 4, &tmp, 4); | |
3523 | ||
b0420980 BF |
3524 | pad = (maxcount&3) ? 4 - (maxcount&3) : 0; |
3525 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 8 + maxcount, | |
3526 | &zzz, pad); | |
1da177e4 | 3527 | return 0; |
dc97618d BF |
3528 | |
3529 | } | |
3530 | ||
3531 | static __be32 | |
3532 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3533 | struct nfsd4_read *read) | |
3534 | { | |
3535 | unsigned long maxcount; | |
3536 | struct xdr_stream *xdr = &resp->xdr; | |
3537 | struct file *file = read->rd_filp; | |
3538 | int starting_len = xdr->buf->len; | |
e749a462 | 3539 | struct raparms *ra = NULL; |
dc97618d | 3540 | __be32 *p; |
dc97618d | 3541 | |
dc97618d BF |
3542 | p = xdr_reserve_space(xdr, 8); /* eof flag and byte count */ |
3543 | if (!p) { | |
779fb0f3 | 3544 | WARN_ON_ONCE(test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)); |
bac966d6 | 3545 | return nfserr_resource; |
dc97618d | 3546 | } |
68e8bb03 CH |
3547 | if (resp->xdr.buf->page_len && |
3548 | test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) { | |
b0420980 | 3549 | WARN_ON_ONCE(1); |
bac966d6 | 3550 | return nfserr_resource; |
dc97618d | 3551 | } |
dc97618d BF |
3552 | xdr_commit_encode(xdr); |
3553 | ||
3554 | maxcount = svc_max_payload(resp->rqstp); | |
68e8bb03 CH |
3555 | maxcount = min_t(unsigned long, maxcount, |
3556 | (xdr->buf->buflen - xdr->buf->len)); | |
3c7aa15d | 3557 | maxcount = min_t(unsigned long, maxcount, read->rd_length); |
dc97618d | 3558 | |
af90f707 | 3559 | if (read->rd_tmp_file) |
e749a462 | 3560 | ra = nfsd_init_raparms(file); |
dc97618d | 3561 | |
68e8bb03 CH |
3562 | if (file->f_op->splice_read && |
3563 | test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) | |
96bcad50 | 3564 | nfserr = nfsd4_encode_splice_read(resp, read, file, maxcount); |
dc97618d | 3565 | else |
96bcad50 | 3566 | nfserr = nfsd4_encode_readv(resp, read, file, maxcount); |
dc97618d | 3567 | |
e749a462 CH |
3568 | if (ra) |
3569 | nfsd_put_raparams(file, ra); | |
dc97618d | 3570 | |
96bcad50 | 3571 | if (nfserr) |
dc97618d | 3572 | xdr_truncate_encode(xdr, starting_len); |
96bcad50 | 3573 | |
96bcad50 | 3574 | return nfserr; |
1da177e4 LT |
3575 | } |
3576 | ||
b37ad28b AV |
3577 | static __be32 |
3578 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
3579 | { |
3580 | int maxcount; | |
476a7b1f BF |
3581 | __be32 wire_count; |
3582 | int zero = 0; | |
ddd1ea56 | 3583 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3584 | int length_offset = xdr->buf->len; |
bc749ca4 | 3585 | __be32 *p; |
1da177e4 | 3586 | |
2825a7f9 BF |
3587 | p = xdr_reserve_space(xdr, 4); |
3588 | if (!p) | |
3589 | return nfserr_resource; | |
1da177e4 | 3590 | maxcount = PAGE_SIZE; |
d0a381dd | 3591 | |
476a7b1f BF |
3592 | p = xdr_reserve_space(xdr, maxcount); |
3593 | if (!p) | |
4e21ac4b | 3594 | return nfserr_resource; |
1da177e4 | 3595 | /* |
fd4a0edf MS |
3596 | * XXX: By default, vfs_readlink() will truncate symlinks if they |
3597 | * would overflow the buffer. Is this kosher in NFSv4? If not, one | |
3598 | * easy fix is: if vfs_readlink() precisely fills the buffer, assume | |
3599 | * that truncation occurred, and return NFS4ERR_RESOURCE. | |
1da177e4 | 3600 | */ |
476a7b1f BF |
3601 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, |
3602 | (char *)p, &maxcount); | |
1da177e4 | 3603 | if (nfserr == nfserr_isdir) |
d3f627c8 BF |
3604 | nfserr = nfserr_inval; |
3605 | if (nfserr) { | |
1fcea5b2 | 3606 | xdr_truncate_encode(xdr, length_offset); |
1da177e4 | 3607 | return nfserr; |
d3f627c8 | 3608 | } |
1da177e4 | 3609 | |
476a7b1f BF |
3610 | wire_count = htonl(maxcount); |
3611 | write_bytes_to_xdr_buf(xdr->buf, length_offset, &wire_count, 4); | |
69bbd9c7 | 3612 | xdr_truncate_encode(xdr, length_offset + 4 + ALIGN(maxcount, 4)); |
476a7b1f BF |
3613 | if (maxcount & 3) |
3614 | write_bytes_to_xdr_buf(xdr->buf, length_offset + 4 + maxcount, | |
3615 | &zero, 4 - (maxcount&3)); | |
1da177e4 LT |
3616 | return 0; |
3617 | } | |
3618 | ||
b37ad28b AV |
3619 | static __be32 |
3620 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
3621 | { |
3622 | int maxcount; | |
561f0ed4 | 3623 | int bytes_left; |
1da177e4 | 3624 | loff_t offset; |
561f0ed4 | 3625 | __be64 wire_offset; |
ddd1ea56 | 3626 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3627 | int starting_len = xdr->buf->len; |
bc749ca4 | 3628 | __be32 *p; |
1da177e4 | 3629 | |
d0a381dd BF |
3630 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
3631 | if (!p) | |
3632 | return nfserr_resource; | |
1da177e4 LT |
3633 | |
3634 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
c373b0a4 BF |
3635 | *p++ = cpu_to_be32(0); |
3636 | *p++ = cpu_to_be32(0); | |
4aea24b2 BF |
3637 | resp->xdr.buf->head[0].iov_len = ((char *)resp->xdr.p) |
3638 | - (char *)resp->xdr.buf->head[0].iov_base; | |
1da177e4 LT |
3639 | |
3640 | /* | |
561f0ed4 BF |
3641 | * Number of bytes left for directory entries allowing for the |
3642 | * final 8 bytes of the readdir and a following failed op: | |
3643 | */ | |
3644 | bytes_left = xdr->buf->buflen - xdr->buf->len | |
3645 | - COMPOUND_ERR_SLACK_SPACE - 8; | |
3646 | if (bytes_left < 0) { | |
3647 | nfserr = nfserr_resource; | |
3648 | goto err_no_verf; | |
3649 | } | |
89864c2e SM |
3650 | maxcount = svc_max_payload(resp->rqstp); |
3651 | maxcount = min_t(u32, readdir->rd_maxcount, maxcount); | |
561f0ed4 BF |
3652 | /* |
3653 | * Note the rfc defines rd_maxcount as the size of the | |
3654 | * READDIR4resok structure, which includes the verifier above | |
3655 | * and the 8 bytes encoded at the end of this function: | |
1da177e4 | 3656 | */ |
561f0ed4 BF |
3657 | if (maxcount < 16) { |
3658 | nfserr = nfserr_toosmall; | |
1da177e4 LT |
3659 | goto err_no_verf; |
3660 | } | |
561f0ed4 | 3661 | maxcount = min_t(int, maxcount-16, bytes_left); |
1da177e4 | 3662 | |
aee37764 BF |
3663 | /* RFC 3530 14.2.24 allows us to ignore dircount when it's 0: */ |
3664 | if (!readdir->rd_dircount) | |
89864c2e | 3665 | readdir->rd_dircount = svc_max_payload(resp->rqstp); |
aee37764 | 3666 | |
561f0ed4 BF |
3667 | readdir->xdr = xdr; |
3668 | readdir->rd_maxcount = maxcount; | |
1da177e4 | 3669 | readdir->common.err = 0; |
561f0ed4 | 3670 | readdir->cookie_offset = 0; |
1da177e4 LT |
3671 | |
3672 | offset = readdir->rd_cookie; | |
3673 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
3674 | &offset, | |
3675 | &readdir->common, nfsd4_encode_dirent); | |
3676 | if (nfserr == nfs_ok && | |
3677 | readdir->common.err == nfserr_toosmall && | |
561f0ed4 BF |
3678 | xdr->buf->len == starting_len + 8) { |
3679 | /* nothing encoded; which limit did we hit?: */ | |
3680 | if (maxcount - 16 < bytes_left) | |
3681 | /* It was the fault of rd_maxcount: */ | |
3682 | nfserr = nfserr_toosmall; | |
3683 | else | |
3684 | /* We ran out of buffer space: */ | |
3685 | nfserr = nfserr_resource; | |
3686 | } | |
1da177e4 LT |
3687 | if (nfserr) |
3688 | goto err_no_verf; | |
3689 | ||
561f0ed4 BF |
3690 | if (readdir->cookie_offset) { |
3691 | wire_offset = cpu_to_be64(offset); | |
3692 | write_bytes_to_xdr_buf(xdr->buf, readdir->cookie_offset, | |
3693 | &wire_offset, 8); | |
3694 | } | |
1da177e4 | 3695 | |
561f0ed4 BF |
3696 | p = xdr_reserve_space(xdr, 8); |
3697 | if (!p) { | |
3698 | WARN_ON_ONCE(1); | |
3699 | goto err_no_verf; | |
3700 | } | |
1da177e4 LT |
3701 | *p++ = 0; /* no more entries */ |
3702 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
1da177e4 LT |
3703 | |
3704 | return 0; | |
3705 | err_no_verf: | |
1fcea5b2 | 3706 | xdr_truncate_encode(xdr, starting_len); |
1da177e4 LT |
3707 | return nfserr; |
3708 | } | |
3709 | ||
695e12f8 | 3710 | static __be32 |
b37ad28b | 3711 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 3712 | { |
d0a381dd | 3713 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3714 | __be32 *p; |
1da177e4 | 3715 | |
bac966d6 BF |
3716 | p = xdr_reserve_space(xdr, 20); |
3717 | if (!p) | |
3718 | return nfserr_resource; | |
3719 | p = encode_cinfo(p, &remove->rm_cinfo); | |
3720 | return 0; | |
1da177e4 LT |
3721 | } |
3722 | ||
695e12f8 | 3723 | static __be32 |
b37ad28b | 3724 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 3725 | { |
d0a381dd | 3726 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3727 | __be32 *p; |
1da177e4 | 3728 | |
bac966d6 BF |
3729 | p = xdr_reserve_space(xdr, 40); |
3730 | if (!p) | |
3731 | return nfserr_resource; | |
3732 | p = encode_cinfo(p, &rename->rn_sinfo); | |
3733 | p = encode_cinfo(p, &rename->rn_tinfo); | |
3734 | return 0; | |
1da177e4 LT |
3735 | } |
3736 | ||
695e12f8 | 3737 | static __be32 |
bac966d6 | 3738 | nfsd4_do_encode_secinfo(struct xdr_stream *xdr, struct svc_export *exp) |
dcb488a3 | 3739 | { |
676e4ebd | 3740 | u32 i, nflavs, supported; |
4796f457 BF |
3741 | struct exp_flavor_info *flavs; |
3742 | struct exp_flavor_info def_flavs[2]; | |
676e4ebd CL |
3743 | __be32 *p, *flavorsp; |
3744 | static bool report = true; | |
dcb488a3 | 3745 | |
4796f457 BF |
3746 | if (exp->ex_nflavors) { |
3747 | flavs = exp->ex_flavors; | |
3748 | nflavs = exp->ex_nflavors; | |
3749 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
3750 | flavs = def_flavs; | |
3751 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
3752 | nflavs = 2; | |
3753 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
3754 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
3755 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
3756 | nflavs = 1; | |
3757 | flavs[0].pseudoflavor | |
3758 | = svcauth_gss_flavor(exp->ex_client); | |
3759 | } else { | |
3760 | nflavs = 1; | |
3761 | flavs[0].pseudoflavor | |
3762 | = exp->ex_client->flavour->flavour; | |
3763 | } | |
3764 | } | |
3765 | ||
676e4ebd | 3766 | supported = 0; |
d0a381dd BF |
3767 | p = xdr_reserve_space(xdr, 4); |
3768 | if (!p) | |
bac966d6 | 3769 | return nfserr_resource; |
676e4ebd | 3770 | flavorsp = p++; /* to be backfilled later */ |
676e4ebd | 3771 | |
4796f457 | 3772 | for (i = 0; i < nflavs; i++) { |
676e4ebd | 3773 | rpc_authflavor_t pf = flavs[i].pseudoflavor; |
a77c806f | 3774 | struct rpcsec_gss_info info; |
dcb488a3 | 3775 | |
676e4ebd CL |
3776 | if (rpcauth_get_gssinfo(pf, &info) == 0) { |
3777 | supported++; | |
d0a381dd BF |
3778 | p = xdr_reserve_space(xdr, 4 + 4 + |
3779 | XDR_LEN(info.oid.len) + 4 + 4); | |
3780 | if (!p) | |
bac966d6 | 3781 | return nfserr_resource; |
c373b0a4 | 3782 | *p++ = cpu_to_be32(RPC_AUTH_GSS); |
0c0c267b | 3783 | p = xdr_encode_opaque(p, info.oid.data, info.oid.len); |
c373b0a4 BF |
3784 | *p++ = cpu_to_be32(info.qop); |
3785 | *p++ = cpu_to_be32(info.service); | |
676e4ebd CL |
3786 | } else if (pf < RPC_AUTH_MAXFLAVOR) { |
3787 | supported++; | |
d0a381dd BF |
3788 | p = xdr_reserve_space(xdr, 4); |
3789 | if (!p) | |
bac966d6 | 3790 | return nfserr_resource; |
c373b0a4 | 3791 | *p++ = cpu_to_be32(pf); |
676e4ebd CL |
3792 | } else { |
3793 | if (report) | |
3794 | pr_warn("NFS: SECINFO: security flavor %u " | |
3795 | "is not supported\n", pf); | |
dcb488a3 AA |
3796 | } |
3797 | } | |
a77c806f | 3798 | |
676e4ebd CL |
3799 | if (nflavs != supported) |
3800 | report = false; | |
3801 | *flavorsp = htonl(supported); | |
bac966d6 | 3802 | return 0; |
dcb488a3 AA |
3803 | } |
3804 | ||
22b6dee8 MJ |
3805 | static __be32 |
3806 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3807 | struct nfsd4_secinfo *secinfo) | |
3808 | { | |
d0a381dd BF |
3809 | struct xdr_stream *xdr = &resp->xdr; |
3810 | ||
bac966d6 | 3811 | return nfsd4_do_encode_secinfo(xdr, secinfo->si_exp); |
22b6dee8 MJ |
3812 | } |
3813 | ||
3814 | static __be32 | |
3815 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3816 | struct nfsd4_secinfo_no_name *secinfo) | |
3817 | { | |
d0a381dd BF |
3818 | struct xdr_stream *xdr = &resp->xdr; |
3819 | ||
bac966d6 | 3820 | return nfsd4_do_encode_secinfo(xdr, secinfo->sin_exp); |
22b6dee8 MJ |
3821 | } |
3822 | ||
1da177e4 LT |
3823 | /* |
3824 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
3825 | * regardless of the error status. | |
3826 | */ | |
695e12f8 | 3827 | static __be32 |
b37ad28b | 3828 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 3829 | { |
d0a381dd | 3830 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3831 | __be32 *p; |
1da177e4 | 3832 | |
d0a381dd BF |
3833 | p = xdr_reserve_space(xdr, 16); |
3834 | if (!p) | |
3835 | return nfserr_resource; | |
1da177e4 | 3836 | if (nfserr) { |
c373b0a4 BF |
3837 | *p++ = cpu_to_be32(3); |
3838 | *p++ = cpu_to_be32(0); | |
3839 | *p++ = cpu_to_be32(0); | |
3840 | *p++ = cpu_to_be32(0); | |
1da177e4 LT |
3841 | } |
3842 | else { | |
c373b0a4 BF |
3843 | *p++ = cpu_to_be32(3); |
3844 | *p++ = cpu_to_be32(setattr->sa_bmval[0]); | |
3845 | *p++ = cpu_to_be32(setattr->sa_bmval[1]); | |
3846 | *p++ = cpu_to_be32(setattr->sa_bmval[2]); | |
1da177e4 | 3847 | } |
695e12f8 | 3848 | return nfserr; |
1da177e4 LT |
3849 | } |
3850 | ||
695e12f8 | 3851 | static __be32 |
b37ad28b | 3852 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 3853 | { |
d0a381dd | 3854 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3855 | __be32 *p; |
1da177e4 LT |
3856 | |
3857 | if (!nfserr) { | |
d0a381dd BF |
3858 | p = xdr_reserve_space(xdr, 8 + NFS4_VERIFIER_SIZE); |
3859 | if (!p) | |
3860 | return nfserr_resource; | |
0c0c267b BF |
3861 | p = xdr_encode_opaque_fixed(p, &scd->se_clientid, 8); |
3862 | p = xdr_encode_opaque_fixed(p, &scd->se_confirm, | |
3863 | NFS4_VERIFIER_SIZE); | |
1da177e4 LT |
3864 | } |
3865 | else if (nfserr == nfserr_clid_inuse) { | |
d0a381dd BF |
3866 | p = xdr_reserve_space(xdr, 8); |
3867 | if (!p) | |
3868 | return nfserr_resource; | |
c373b0a4 BF |
3869 | *p++ = cpu_to_be32(0); |
3870 | *p++ = cpu_to_be32(0); | |
1da177e4 | 3871 | } |
695e12f8 | 3872 | return nfserr; |
1da177e4 LT |
3873 | } |
3874 | ||
695e12f8 | 3875 | static __be32 |
b37ad28b | 3876 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 3877 | { |
d0a381dd | 3878 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3879 | __be32 *p; |
1da177e4 | 3880 | |
bac966d6 BF |
3881 | p = xdr_reserve_space(xdr, 16); |
3882 | if (!p) | |
3883 | return nfserr_resource; | |
3884 | *p++ = cpu_to_be32(write->wr_bytes_written); | |
3885 | *p++ = cpu_to_be32(write->wr_how_written); | |
3886 | p = xdr_encode_opaque_fixed(p, write->wr_verifier.data, | |
3887 | NFS4_VERIFIER_SIZE); | |
3888 | return 0; | |
1da177e4 LT |
3889 | } |
3890 | ||
2db134eb | 3891 | static __be32 |
57b7b43b | 3892 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3893 | struct nfsd4_exchange_id *exid) |
3894 | { | |
d0a381dd | 3895 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3896 | __be32 *p; |
0733d213 AA |
3897 | char *major_id; |
3898 | char *server_scope; | |
3899 | int major_id_sz; | |
3900 | int server_scope_sz; | |
3901 | uint64_t minor_id = 0; | |
3902 | ||
0733d213 AA |
3903 | major_id = utsname()->nodename; |
3904 | major_id_sz = strlen(major_id); | |
3905 | server_scope = utsname()->nodename; | |
3906 | server_scope_sz = strlen(server_scope); | |
3907 | ||
d0a381dd | 3908 | p = xdr_reserve_space(xdr, |
0733d213 AA |
3909 | 8 /* eir_clientid */ + |
3910 | 4 /* eir_sequenceid */ + | |
3911 | 4 /* eir_flags */ + | |
a8bb84bc | 3912 | 4 /* spr_how */); |
d0a381dd BF |
3913 | if (!p) |
3914 | return nfserr_resource; | |
0733d213 | 3915 | |
0c0c267b | 3916 | p = xdr_encode_opaque_fixed(p, &exid->clientid, 8); |
c373b0a4 BF |
3917 | *p++ = cpu_to_be32(exid->seqid); |
3918 | *p++ = cpu_to_be32(exid->flags); | |
0733d213 | 3919 | |
c373b0a4 | 3920 | *p++ = cpu_to_be32(exid->spa_how); |
a8bb84bc | 3921 | |
57266a6e BF |
3922 | switch (exid->spa_how) { |
3923 | case SP4_NONE: | |
3924 | break; | |
3925 | case SP4_MACH_CRED: | |
3926 | /* spo_must_enforce bitmap: */ | |
bac966d6 | 3927 | nfserr = nfsd4_encode_bitmap(xdr, |
ed941643 AE |
3928 | exid->spo_must_enforce[0], |
3929 | exid->spo_must_enforce[1], | |
3930 | exid->spo_must_enforce[2]); | |
bac966d6 BF |
3931 | if (nfserr) |
3932 | return nfserr; | |
ed941643 | 3933 | /* spo_must_allow bitmap: */ |
bac966d6 | 3934 | nfserr = nfsd4_encode_bitmap(xdr, |
ed941643 AE |
3935 | exid->spo_must_allow[0], |
3936 | exid->spo_must_allow[1], | |
3937 | exid->spo_must_allow[2]); | |
bac966d6 BF |
3938 | if (nfserr) |
3939 | return nfserr; | |
57266a6e BF |
3940 | break; |
3941 | default: | |
3942 | WARN_ON_ONCE(1); | |
3943 | } | |
0733d213 | 3944 | |
d0a381dd | 3945 | p = xdr_reserve_space(xdr, |
a8bb84bc KM |
3946 | 8 /* so_minor_id */ + |
3947 | 4 /* so_major_id.len */ + | |
3948 | (XDR_QUADLEN(major_id_sz) * 4) + | |
3949 | 4 /* eir_server_scope.len */ + | |
3950 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
3951 | 4 /* eir_server_impl_id.count (0) */); | |
d0a381dd BF |
3952 | if (!p) |
3953 | return nfserr_resource; | |
a8bb84bc | 3954 | |
0733d213 | 3955 | /* The server_owner struct */ |
b64c7f3b | 3956 | p = xdr_encode_hyper(p, minor_id); /* Minor id */ |
0733d213 | 3957 | /* major id */ |
0c0c267b | 3958 | p = xdr_encode_opaque(p, major_id, major_id_sz); |
0733d213 AA |
3959 | |
3960 | /* Server scope */ | |
0c0c267b | 3961 | p = xdr_encode_opaque(p, server_scope, server_scope_sz); |
0733d213 AA |
3962 | |
3963 | /* Implementation id */ | |
c373b0a4 | 3964 | *p++ = cpu_to_be32(0); /* zero length nfs_impl_id4 array */ |
0733d213 | 3965 | return 0; |
2db134eb AA |
3966 | } |
3967 | ||
3968 | static __be32 | |
57b7b43b | 3969 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3970 | struct nfsd4_create_session *sess) |
3971 | { | |
d0a381dd | 3972 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3973 | __be32 *p; |
ec6b5d7b | 3974 | |
d0a381dd BF |
3975 | p = xdr_reserve_space(xdr, 24); |
3976 | if (!p) | |
3977 | return nfserr_resource; | |
0c0c267b BF |
3978 | p = xdr_encode_opaque_fixed(p, sess->sessionid.data, |
3979 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
3980 | *p++ = cpu_to_be32(sess->seqid); |
3981 | *p++ = cpu_to_be32(sess->flags); | |
ec6b5d7b | 3982 | |
d0a381dd BF |
3983 | p = xdr_reserve_space(xdr, 28); |
3984 | if (!p) | |
3985 | return nfserr_resource; | |
c373b0a4 BF |
3986 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
3987 | *p++ = cpu_to_be32(sess->fore_channel.maxreq_sz); | |
3988 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_sz); | |
3989 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_cached); | |
3990 | *p++ = cpu_to_be32(sess->fore_channel.maxops); | |
3991 | *p++ = cpu_to_be32(sess->fore_channel.maxreqs); | |
3992 | *p++ = cpu_to_be32(sess->fore_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
3993 | |
3994 | if (sess->fore_channel.nr_rdma_attrs) { | |
d0a381dd BF |
3995 | p = xdr_reserve_space(xdr, 4); |
3996 | if (!p) | |
3997 | return nfserr_resource; | |
c373b0a4 | 3998 | *p++ = cpu_to_be32(sess->fore_channel.rdma_attrs); |
ec6b5d7b AA |
3999 | } |
4000 | ||
d0a381dd BF |
4001 | p = xdr_reserve_space(xdr, 28); |
4002 | if (!p) | |
4003 | return nfserr_resource; | |
c373b0a4 BF |
4004 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
4005 | *p++ = cpu_to_be32(sess->back_channel.maxreq_sz); | |
4006 | *p++ = cpu_to_be32(sess->back_channel.maxresp_sz); | |
4007 | *p++ = cpu_to_be32(sess->back_channel.maxresp_cached); | |
4008 | *p++ = cpu_to_be32(sess->back_channel.maxops); | |
4009 | *p++ = cpu_to_be32(sess->back_channel.maxreqs); | |
4010 | *p++ = cpu_to_be32(sess->back_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
4011 | |
4012 | if (sess->back_channel.nr_rdma_attrs) { | |
d0a381dd BF |
4013 | p = xdr_reserve_space(xdr, 4); |
4014 | if (!p) | |
4015 | return nfserr_resource; | |
c373b0a4 | 4016 | *p++ = cpu_to_be32(sess->back_channel.rdma_attrs); |
ec6b5d7b AA |
4017 | } |
4018 | return 0; | |
2db134eb AA |
4019 | } |
4020 | ||
c47d832b | 4021 | static __be32 |
57b7b43b | 4022 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
4023 | struct nfsd4_sequence *seq) |
4024 | { | |
d0a381dd | 4025 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 4026 | __be32 *p; |
b85d4c01 | 4027 | |
d0a381dd BF |
4028 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 20); |
4029 | if (!p) | |
4030 | return nfserr_resource; | |
0c0c267b BF |
4031 | p = xdr_encode_opaque_fixed(p, seq->sessionid.data, |
4032 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
4033 | *p++ = cpu_to_be32(seq->seqid); |
4034 | *p++ = cpu_to_be32(seq->slotid); | |
b7d7ca35 | 4035 | /* Note slotid's are numbered from zero: */ |
c373b0a4 BF |
4036 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_highest_slotid */ |
4037 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_target_highest_slotid */ | |
4038 | *p++ = cpu_to_be32(seq->status_flags); | |
b85d4c01 | 4039 | |
f5236013 | 4040 | resp->cstate.data_offset = xdr->buf->len; /* DRC cache data pointer */ |
b85d4c01 | 4041 | return 0; |
2db134eb AA |
4042 | } |
4043 | ||
2355c596 | 4044 | static __be32 |
57b7b43b | 4045 | nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
17456804 BS |
4046 | struct nfsd4_test_stateid *test_stateid) |
4047 | { | |
d0a381dd | 4048 | struct xdr_stream *xdr = &resp->xdr; |
03cfb420 | 4049 | struct nfsd4_test_stateid_id *stateid, *next; |
17456804 | 4050 | __be32 *p; |
17456804 | 4051 | |
d0a381dd BF |
4052 | p = xdr_reserve_space(xdr, 4 + (4 * test_stateid->ts_num_ids)); |
4053 | if (!p) | |
4054 | return nfserr_resource; | |
17456804 | 4055 | *p++ = htonl(test_stateid->ts_num_ids); |
17456804 | 4056 | |
03cfb420 | 4057 | list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) { |
02f5fde5 | 4058 | *p++ = stateid->ts_id_status; |
17456804 | 4059 | } |
17456804 | 4060 | |
bac966d6 | 4061 | return 0; |
17456804 BS |
4062 | } |
4063 | ||
9cf514cc CH |
4064 | #ifdef CONFIG_NFSD_PNFS |
4065 | static __be32 | |
4066 | nfsd4_encode_getdeviceinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4067 | struct nfsd4_getdeviceinfo *gdev) | |
4068 | { | |
4069 | struct xdr_stream *xdr = &resp->xdr; | |
f961e3f2 | 4070 | const struct nfsd4_layout_ops *ops; |
9cf514cc CH |
4071 | u32 starting_len = xdr->buf->len, needed_len; |
4072 | __be32 *p; | |
4073 | ||
9cf514cc CH |
4074 | p = xdr_reserve_space(xdr, 4); |
4075 | if (!p) | |
bac966d6 | 4076 | return nfserr_resource; |
9cf514cc CH |
4077 | |
4078 | *p++ = cpu_to_be32(gdev->gd_layout_type); | |
4079 | ||
4080 | /* If maxcount is 0 then just update notifications */ | |
4081 | if (gdev->gd_maxcount != 0) { | |
f961e3f2 | 4082 | ops = nfsd4_layout_ops[gdev->gd_layout_type]; |
9cf514cc CH |
4083 | nfserr = ops->encode_getdeviceinfo(xdr, gdev); |
4084 | if (nfserr) { | |
4085 | /* | |
4086 | * We don't bother to burden the layout drivers with | |
4087 | * enforcing gd_maxcount, just tell the client to | |
4088 | * come back with a bigger buffer if it's not enough. | |
4089 | */ | |
4090 | if (xdr->buf->len + 4 > gdev->gd_maxcount) | |
4091 | goto toosmall; | |
bac966d6 | 4092 | return nfserr; |
9cf514cc CH |
4093 | } |
4094 | } | |
4095 | ||
9cf514cc CH |
4096 | if (gdev->gd_notify_types) { |
4097 | p = xdr_reserve_space(xdr, 4 + 4); | |
4098 | if (!p) | |
bac966d6 | 4099 | return nfserr_resource; |
9cf514cc CH |
4100 | *p++ = cpu_to_be32(1); /* bitmap length */ |
4101 | *p++ = cpu_to_be32(gdev->gd_notify_types); | |
4102 | } else { | |
4103 | p = xdr_reserve_space(xdr, 4); | |
4104 | if (!p) | |
bac966d6 | 4105 | return nfserr_resource; |
9cf514cc CH |
4106 | *p++ = 0; |
4107 | } | |
4108 | ||
bac966d6 | 4109 | return 0; |
9cf514cc CH |
4110 | toosmall: |
4111 | dprintk("%s: maxcount too small\n", __func__); | |
4112 | needed_len = xdr->buf->len + 4 /* notifications */; | |
4113 | xdr_truncate_encode(xdr, starting_len); | |
4114 | p = xdr_reserve_space(xdr, 4); | |
bac966d6 BF |
4115 | if (!p) |
4116 | return nfserr_resource; | |
4117 | *p++ = cpu_to_be32(needed_len); | |
4118 | return nfserr_toosmall; | |
9cf514cc CH |
4119 | } |
4120 | ||
4121 | static __be32 | |
4122 | nfsd4_encode_layoutget(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4123 | struct nfsd4_layoutget *lgp) | |
4124 | { | |
4125 | struct xdr_stream *xdr = &resp->xdr; | |
f961e3f2 | 4126 | const struct nfsd4_layout_ops *ops; |
9cf514cc CH |
4127 | __be32 *p; |
4128 | ||
9cf514cc CH |
4129 | p = xdr_reserve_space(xdr, 36 + sizeof(stateid_opaque_t)); |
4130 | if (!p) | |
bac966d6 | 4131 | return nfserr_resource; |
9cf514cc CH |
4132 | |
4133 | *p++ = cpu_to_be32(1); /* we always set return-on-close */ | |
4134 | *p++ = cpu_to_be32(lgp->lg_sid.si_generation); | |
4135 | p = xdr_encode_opaque_fixed(p, &lgp->lg_sid.si_opaque, | |
4136 | sizeof(stateid_opaque_t)); | |
4137 | ||
4138 | *p++ = cpu_to_be32(1); /* we always return a single layout */ | |
4139 | p = xdr_encode_hyper(p, lgp->lg_seg.offset); | |
4140 | p = xdr_encode_hyper(p, lgp->lg_seg.length); | |
4141 | *p++ = cpu_to_be32(lgp->lg_seg.iomode); | |
4142 | *p++ = cpu_to_be32(lgp->lg_layout_type); | |
4143 | ||
f961e3f2 | 4144 | ops = nfsd4_layout_ops[lgp->lg_layout_type]; |
bac966d6 | 4145 | return ops->encode_layoutget(xdr, lgp); |
9cf514cc CH |
4146 | } |
4147 | ||
4148 | static __be32 | |
4149 | nfsd4_encode_layoutcommit(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4150 | struct nfsd4_layoutcommit *lcp) | |
4151 | { | |
4152 | struct xdr_stream *xdr = &resp->xdr; | |
4153 | __be32 *p; | |
4154 | ||
9cf514cc CH |
4155 | p = xdr_reserve_space(xdr, 4); |
4156 | if (!p) | |
4157 | return nfserr_resource; | |
4158 | *p++ = cpu_to_be32(lcp->lc_size_chg); | |
4159 | if (lcp->lc_size_chg) { | |
4160 | p = xdr_reserve_space(xdr, 8); | |
4161 | if (!p) | |
4162 | return nfserr_resource; | |
4163 | p = xdr_encode_hyper(p, lcp->lc_newsize); | |
4164 | } | |
4165 | ||
bac966d6 | 4166 | return 0; |
9cf514cc CH |
4167 | } |
4168 | ||
4169 | static __be32 | |
4170 | nfsd4_encode_layoutreturn(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4171 | struct nfsd4_layoutreturn *lrp) | |
4172 | { | |
4173 | struct xdr_stream *xdr = &resp->xdr; | |
4174 | __be32 *p; | |
4175 | ||
9cf514cc CH |
4176 | p = xdr_reserve_space(xdr, 4); |
4177 | if (!p) | |
4178 | return nfserr_resource; | |
4179 | *p++ = cpu_to_be32(lrp->lrs_present); | |
4180 | if (lrp->lrs_present) | |
376675da | 4181 | return nfsd4_encode_stateid(xdr, &lrp->lr_sid); |
bac966d6 | 4182 | return 0; |
9cf514cc CH |
4183 | } |
4184 | #endif /* CONFIG_NFSD_PNFS */ | |
4185 | ||
29ae7f9d AS |
4186 | static __be32 |
4187 | nfsd42_encode_write_res(struct nfsd4_compoundres *resp, struct nfsd42_write_res *write) | |
4188 | { | |
4189 | __be32 *p; | |
4190 | ||
4191 | p = xdr_reserve_space(&resp->xdr, 4 + 8 + 4 + NFS4_VERIFIER_SIZE); | |
4192 | if (!p) | |
4193 | return nfserr_resource; | |
4194 | ||
4195 | *p++ = cpu_to_be32(0); | |
4196 | p = xdr_encode_hyper(p, write->wr_bytes_written); | |
4197 | *p++ = cpu_to_be32(write->wr_stable_how); | |
4198 | p = xdr_encode_opaque_fixed(p, write->wr_verifier.data, | |
4199 | NFS4_VERIFIER_SIZE); | |
4200 | return nfs_ok; | |
4201 | } | |
4202 | ||
4203 | static __be32 | |
4204 | nfsd4_encode_copy(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4205 | struct nfsd4_copy *copy) | |
4206 | { | |
4207 | __be32 *p; | |
4208 | ||
bac966d6 BF |
4209 | nfserr = nfsd42_encode_write_res(resp, ©->cp_res); |
4210 | if (nfserr) | |
4211 | return nfserr; | |
29ae7f9d | 4212 | |
bac966d6 BF |
4213 | p = xdr_reserve_space(&resp->xdr, 4 + 4); |
4214 | *p++ = cpu_to_be32(copy->cp_consecutive); | |
4215 | *p++ = cpu_to_be32(copy->cp_synchronous); | |
4216 | return 0; | |
29ae7f9d AS |
4217 | } |
4218 | ||
24bab491 AS |
4219 | static __be32 |
4220 | nfsd4_encode_seek(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4221 | struct nfsd4_seek *seek) | |
4222 | { | |
4223 | __be32 *p; | |
4224 | ||
24bab491 AS |
4225 | p = xdr_reserve_space(&resp->xdr, 4 + 8); |
4226 | *p++ = cpu_to_be32(seek->seek_eof); | |
4227 | p = xdr_encode_hyper(p, seek->seek_pos); | |
4228 | ||
bac966d6 | 4229 | return 0; |
24bab491 AS |
4230 | } |
4231 | ||
695e12f8 BH |
4232 | static __be32 |
4233 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
4234 | { | |
4235 | return nfserr; | |
4236 | } | |
4237 | ||
4238 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
4239 | ||
2db134eb AA |
4240 | /* |
4241 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
4242 | * since we don't need to filter out obsolete ops as this is | |
4243 | * done in the decoding phase. | |
4244 | */ | |
c1df609d | 4245 | static const nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
4246 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
4247 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
4248 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
4249 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
4250 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
4251 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
4252 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
4253 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
4254 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
4255 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
4256 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
4257 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
4258 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
4259 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
4260 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
4261 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 4262 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
4263 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
4264 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
4265 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4266 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4267 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4268 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
4269 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
4270 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
4271 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
4272 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
4273 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
4274 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4275 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4276 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
4277 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
4278 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
4279 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
4280 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
4281 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
4282 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
4283 | |
4284 | /* NFSv4.1 operations */ | |
4285 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
1d1bc8f2 | 4286 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
2db134eb AA |
4287 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
4288 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
43212cc7 KM |
4289 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_noop, |
4290 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb | 4291 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
9cf514cc CH |
4292 | #ifdef CONFIG_NFSD_PNFS |
4293 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_getdeviceinfo, | |
4294 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
4295 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_layoutcommit, | |
4296 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_layoutget, | |
4297 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_layoutreturn, | |
4298 | #else | |
2db134eb AA |
4299 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, |
4300 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
4301 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
4302 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
4303 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
9cf514cc | 4304 | #endif |
22b6dee8 | 4305 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
2db134eb AA |
4306 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
4307 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
17456804 | 4308 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, |
2db134eb AA |
4309 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
4310 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
4311 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
87a15a80 AS |
4312 | |
4313 | /* NFSv4.2 operations */ | |
4314 | [OP_ALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, | |
29ae7f9d | 4315 | [OP_COPY] = (nfsd4_enc)nfsd4_encode_copy, |
87a15a80 AS |
4316 | [OP_COPY_NOTIFY] = (nfsd4_enc)nfsd4_encode_noop, |
4317 | [OP_DEALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, | |
4318 | [OP_IO_ADVISE] = (nfsd4_enc)nfsd4_encode_noop, | |
4319 | [OP_LAYOUTERROR] = (nfsd4_enc)nfsd4_encode_noop, | |
4320 | [OP_LAYOUTSTATS] = (nfsd4_enc)nfsd4_encode_noop, | |
4321 | [OP_OFFLOAD_CANCEL] = (nfsd4_enc)nfsd4_encode_noop, | |
4322 | [OP_OFFLOAD_STATUS] = (nfsd4_enc)nfsd4_encode_noop, | |
4323 | [OP_READ_PLUS] = (nfsd4_enc)nfsd4_encode_noop, | |
24bab491 | 4324 | [OP_SEEK] = (nfsd4_enc)nfsd4_encode_seek, |
87a15a80 | 4325 | [OP_WRITE_SAME] = (nfsd4_enc)nfsd4_encode_noop, |
ffa0160a | 4326 | [OP_CLONE] = (nfsd4_enc)nfsd4_encode_noop, |
695e12f8 BH |
4327 | }; |
4328 | ||
496c262c | 4329 | /* |
a8095f7e BF |
4330 | * Calculate whether we still have space to encode repsize bytes. |
4331 | * There are two considerations: | |
4332 | * - For NFS versions >=4.1, the size of the reply must stay within | |
4333 | * session limits | |
4334 | * - For all NFS versions, we must stay within limited preallocated | |
4335 | * buffer space. | |
496c262c | 4336 | * |
a8095f7e BF |
4337 | * This is called before the operation is processed, so can only provide |
4338 | * an upper estimate. For some nonidempotent operations (such as | |
4339 | * getattr), it's not necessarily a problem if that estimate is wrong, | |
4340 | * as we can fail it after processing without significant side effects. | |
496c262c | 4341 | */ |
a8095f7e | 4342 | __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 respsize) |
496c262c | 4343 | { |
67492c99 | 4344 | struct xdr_buf *buf = &resp->rqstp->rq_res; |
47ee5298 | 4345 | struct nfsd4_slot *slot = resp->cstate.slot; |
496c262c | 4346 | |
47ee5298 BF |
4347 | if (buf->len + respsize <= buf->buflen) |
4348 | return nfs_ok; | |
4349 | if (!nfsd4_has_session(&resp->cstate)) | |
ea8d7720 | 4350 | return nfserr_resource; |
47ee5298 BF |
4351 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) { |
4352 | WARN_ON_ONCE(1); | |
4353 | return nfserr_rep_too_big_to_cache; | |
ea8d7720 | 4354 | } |
47ee5298 | 4355 | return nfserr_rep_too_big; |
496c262c AA |
4356 | } |
4357 | ||
1da177e4 LT |
4358 | void |
4359 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
4360 | { | |
082d4bd7 | 4361 | struct xdr_stream *xdr = &resp->xdr; |
9411b1d4 | 4362 | struct nfs4_stateowner *so = resp->cstate.replay_owner; |
5f4ab945 | 4363 | struct svc_rqst *rqstp = resp->rqstp; |
34b1744c | 4364 | const struct nfsd4_operation *opdesc = op->opdesc; |
082d4bd7 | 4365 | int post_err_offset; |
07d1f802 | 4366 | nfsd4_enc encoder; |
bc749ca4 | 4367 | __be32 *p; |
1da177e4 | 4368 | |
d0a381dd BF |
4369 | p = xdr_reserve_space(xdr, 8); |
4370 | if (!p) { | |
4371 | WARN_ON_ONCE(1); | |
4372 | return; | |
4373 | } | |
c373b0a4 | 4374 | *p++ = cpu_to_be32(op->opnum); |
082d4bd7 | 4375 | post_err_offset = xdr->buf->len; |
1da177e4 | 4376 | |
695e12f8 BH |
4377 | if (op->opnum == OP_ILLEGAL) |
4378 | goto status; | |
b7571e4c BF |
4379 | if (op->status && opdesc && |
4380 | !(opdesc->op_flags & OP_NONTRIVIAL_ERROR_ENCODE)) | |
4381 | goto status; | |
695e12f8 BH |
4382 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || |
4383 | !nfsd4_enc_ops[op->opnum]); | |
07d1f802 BF |
4384 | encoder = nfsd4_enc_ops[op->opnum]; |
4385 | op->status = encoder(resp, op->status, &op->u); | |
34b1744c BF |
4386 | if (opdesc && opdesc->op_release) |
4387 | opdesc->op_release(&op->u); | |
2825a7f9 BF |
4388 | xdr_commit_encode(xdr); |
4389 | ||
067e1ace | 4390 | /* nfsd4_check_resp_size guarantees enough room for error status */ |
5f4ab945 BF |
4391 | if (!op->status) { |
4392 | int space_needed = 0; | |
4393 | if (!nfsd4_last_compound_op(rqstp)) | |
4394 | space_needed = COMPOUND_ERR_SLACK_SPACE; | |
4395 | op->status = nfsd4_check_resp_size(resp, space_needed); | |
4396 | } | |
c8f13d97 BF |
4397 | if (op->status == nfserr_resource && nfsd4_has_session(&resp->cstate)) { |
4398 | struct nfsd4_slot *slot = resp->cstate.slot; | |
4399 | ||
4400 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) | |
4401 | op->status = nfserr_rep_too_big_to_cache; | |
4402 | else | |
4403 | op->status = nfserr_rep_too_big; | |
4404 | } | |
07d1f802 BF |
4405 | if (op->status == nfserr_resource || |
4406 | op->status == nfserr_rep_too_big || | |
4407 | op->status == nfserr_rep_too_big_to_cache) { | |
4408 | /* | |
4409 | * The operation may have already been encoded or | |
4410 | * partially encoded. No op returns anything additional | |
4411 | * in the case of one of these three errors, so we can | |
4412 | * just truncate back to after the status. But it's a | |
4413 | * bug if we had to do this on a non-idempotent op: | |
4414 | */ | |
4415 | warn_on_nonidempotent_op(op); | |
082d4bd7 | 4416 | xdr_truncate_encode(xdr, post_err_offset); |
07d1f802 | 4417 | } |
9411b1d4 | 4418 | if (so) { |
082d4bd7 BF |
4419 | int len = xdr->buf->len - post_err_offset; |
4420 | ||
9411b1d4 | 4421 | so->so_replay.rp_status = op->status; |
082d4bd7 BF |
4422 | so->so_replay.rp_buflen = len; |
4423 | read_bytes_from_xdr_buf(xdr->buf, post_err_offset, | |
4424 | so->so_replay.rp_buf, len); | |
9411b1d4 | 4425 | } |
695e12f8 | 4426 | status: |
082d4bd7 BF |
4427 | /* Note that op->status is already in network byte order: */ |
4428 | write_bytes_to_xdr_buf(xdr->buf, post_err_offset - 4, &op->status, 4); | |
1da177e4 LT |
4429 | } |
4430 | ||
4431 | /* | |
4432 | * Encode the reply stored in the stateowner reply cache | |
4433 | * | |
4434 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
4435 | * previously sent already encoded operation. | |
1da177e4 LT |
4436 | */ |
4437 | void | |
d0a381dd | 4438 | nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op) |
1da177e4 | 4439 | { |
bc749ca4 | 4440 | __be32 *p; |
1da177e4 LT |
4441 | struct nfs4_replay *rp = op->replay; |
4442 | ||
4443 | BUG_ON(!rp); | |
4444 | ||
d0a381dd BF |
4445 | p = xdr_reserve_space(xdr, 8 + rp->rp_buflen); |
4446 | if (!p) { | |
4447 | WARN_ON_ONCE(1); | |
4448 | return; | |
4449 | } | |
c373b0a4 | 4450 | *p++ = cpu_to_be32(op->opnum); |
1da177e4 | 4451 | *p++ = rp->rp_status; /* already xdr'ed */ |
1da177e4 | 4452 | |
0c0c267b | 4453 | p = xdr_encode_opaque_fixed(p, rp->rp_buf, rp->rp_buflen); |
1da177e4 LT |
4454 | } |
4455 | ||
1da177e4 | 4456 | int |
63f8de37 | 4457 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 LT |
4458 | { |
4459 | return xdr_ressize_check(rqstp, p); | |
4460 | } | |
4461 | ||
8537488b | 4462 | void nfsd4_release_compoundargs(struct svc_rqst *rqstp) |
1da177e4 | 4463 | { |
3e98abff BF |
4464 | struct nfsd4_compoundargs *args = rqstp->rq_argp; |
4465 | ||
1da177e4 LT |
4466 | if (args->ops != args->iops) { |
4467 | kfree(args->ops); | |
4468 | args->ops = args->iops; | |
4469 | } | |
f99d49ad JJ |
4470 | kfree(args->tmpp); |
4471 | args->tmpp = NULL; | |
1da177e4 | 4472 | while (args->to_free) { |
d5e23383 | 4473 | struct svcxdr_tmpbuf *tb = args->to_free; |
1da177e4 | 4474 | args->to_free = tb->next; |
1da177e4 LT |
4475 | kfree(tb); |
4476 | } | |
4477 | } | |
4478 | ||
4479 | int | |
026fec7e | 4480 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 4481 | { |
026fec7e CH |
4482 | struct nfsd4_compoundargs *args = rqstp->rq_argp; |
4483 | ||
e874f9f8 JL |
4484 | if (rqstp->rq_arg.head[0].iov_len % 4) { |
4485 | /* client is nuts */ | |
4486 | dprintk("%s: compound not properly padded! (peeraddr=%pISc xid=0x%x)", | |
4487 | __func__, svc_addr(rqstp), be32_to_cpu(rqstp->rq_xid)); | |
4488 | return 0; | |
4489 | } | |
1da177e4 LT |
4490 | args->p = p; |
4491 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
4492 | args->pagelist = rqstp->rq_arg.pages; | |
4493 | args->pagelen = rqstp->rq_arg.page_len; | |
eae03e2a | 4494 | args->tail = false; |
1da177e4 LT |
4495 | args->tmpp = NULL; |
4496 | args->to_free = NULL; | |
4497 | args->ops = args->iops; | |
4498 | args->rqstp = rqstp; | |
4499 | ||
3e98abff | 4500 | return !nfsd4_decode_compound(args); |
1da177e4 LT |
4501 | } |
4502 | ||
4503 | int | |
63f8de37 | 4504 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 LT |
4505 | { |
4506 | /* | |
4507 | * All that remains is to write the tag and operation count... | |
4508 | */ | |
63f8de37 | 4509 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
6ac90391 BF |
4510 | struct xdr_buf *buf = resp->xdr.buf; |
4511 | ||
4512 | WARN_ON_ONCE(buf->len != buf->head[0].iov_len + buf->page_len + | |
4513 | buf->tail[0].iov_len); | |
dd97fdde | 4514 | |
2825a7f9 BF |
4515 | rqstp->rq_next_page = resp->xdr.page_ptr + 1; |
4516 | ||
1da177e4 LT |
4517 | p = resp->tagp; |
4518 | *p++ = htonl(resp->taglen); | |
4519 | memcpy(p, resp->tag, resp->taglen); | |
4520 | p += XDR_QUADLEN(resp->taglen); | |
4521 | *p++ = htonl(resp->opcnt); | |
4522 | ||
b607664e | 4523 | nfsd4_sequence_done(resp); |
1da177e4 LT |
4524 | return 1; |
4525 | } | |
4526 | ||
4527 | /* | |
4528 | * Local variables: | |
4529 | * c-basic-offset: 8 | |
4530 | * End: | |
4531 | */ |