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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 | 322 | { |
95582b00 | 323 | struct timespec ts; |
1da177e4 LT |
324 | int expected_len, len = 0; |
325 | u32 dummy32; | |
326 | char *buf; | |
327 | ||
328 | DECODE_HEAD; | |
329 | iattr->ia_valid = 0; | |
330 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
331 | return status; | |
332 | ||
e864c189 BF |
333 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
334 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 | |
335 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) { | |
336 | if (nfsd_attrs_supported(argp->minorversion, bmval)) | |
337 | return nfserr_inval; | |
338 | return nfserr_attrnotsupp; | |
339 | } | |
340 | ||
1da177e4 | 341 | READ_BUF(4); |
06553991 | 342 | expected_len = be32_to_cpup(p++); |
1da177e4 LT |
343 | |
344 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
345 | READ_BUF(8); | |
346 | len += 8; | |
542d1ab3 | 347 | p = xdr_decode_hyper(p, &iattr->ia_size); |
1da177e4 LT |
348 | iattr->ia_valid |= ATTR_SIZE; |
349 | } | |
350 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
64a817cf | 351 | u32 nace; |
28e05dd8 | 352 | struct nfs4_ace *ace; |
1da177e4 LT |
353 | |
354 | READ_BUF(4); len += 4; | |
06553991 | 355 | nace = be32_to_cpup(p++); |
1da177e4 | 356 | |
28e05dd8 | 357 | if (nace > NFS4_ACL_MAX) |
798df338 | 358 | return nfserr_fbig; |
28e05dd8 | 359 | |
d5e23383 | 360 | *acl = svcxdr_tmpalloc(argp, nfs4_acl_bytes(nace)); |
eba1c99c KM |
361 | if (*acl == NULL) |
362 | return nfserr_jukebox; | |
363 | ||
28e05dd8 BF |
364 | (*acl)->naces = nace; |
365 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { | |
1da177e4 | 366 | READ_BUF(16); len += 16; |
06553991 BF |
367 | ace->type = be32_to_cpup(p++); |
368 | ace->flag = be32_to_cpup(p++); | |
369 | ace->access_mask = be32_to_cpup(p++); | |
370 | dummy32 = be32_to_cpup(p++); | |
1da177e4 LT |
371 | READ_BUF(dummy32); |
372 | len += XDR_QUADLEN(dummy32) << 2; | |
373 | READMEM(buf, dummy32); | |
28e05dd8 | 374 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
3c726023 | 375 | status = nfs_ok; |
28e05dd8 | 376 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ab8e4aee | 377 | ; |
28e05dd8 | 378 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
3c726023 | 379 | status = nfsd_map_name_to_gid(argp->rqstp, |
ab8e4aee | 380 | buf, dummy32, &ace->who_gid); |
1da177e4 | 381 | else |
3c726023 | 382 | status = nfsd_map_name_to_uid(argp->rqstp, |
ab8e4aee | 383 | buf, dummy32, &ace->who_uid); |
3c726023 BF |
384 | if (status) |
385 | return status; | |
1da177e4 LT |
386 | } |
387 | } else | |
388 | *acl = NULL; | |
389 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
390 | READ_BUF(4); | |
391 | len += 4; | |
06553991 | 392 | iattr->ia_mode = be32_to_cpup(p++); |
1da177e4 LT |
393 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); |
394 | iattr->ia_valid |= ATTR_MODE; | |
395 | } | |
396 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
397 | READ_BUF(4); | |
398 | len += 4; | |
06553991 | 399 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
400 | READ_BUF(dummy32); |
401 | len += (XDR_QUADLEN(dummy32) << 2); | |
402 | READMEM(buf, dummy32); | |
47c85291 N |
403 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
404 | return status; | |
1da177e4 LT |
405 | iattr->ia_valid |= ATTR_UID; |
406 | } | |
407 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
408 | READ_BUF(4); | |
409 | len += 4; | |
06553991 | 410 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
411 | READ_BUF(dummy32); |
412 | len += (XDR_QUADLEN(dummy32) << 2); | |
413 | READMEM(buf, dummy32); | |
47c85291 N |
414 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
415 | return status; | |
1da177e4 LT |
416 | iattr->ia_valid |= ATTR_GID; |
417 | } | |
418 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
419 | READ_BUF(4); | |
420 | len += 4; | |
06553991 | 421 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
422 | switch (dummy32) { |
423 | case NFS4_SET_TO_CLIENT_TIME: | |
1da177e4 | 424 | len += 12; |
95582b00 DD |
425 | status = nfsd4_decode_time(argp, &ts); |
426 | iattr->ia_atime = timespec_to_timespec64(ts); | |
4c94e13e CH |
427 | if (status) |
428 | return status; | |
1da177e4 LT |
429 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); |
430 | break; | |
431 | case NFS4_SET_TO_SERVER_TIME: | |
432 | iattr->ia_valid |= ATTR_ATIME; | |
433 | break; | |
434 | default: | |
435 | goto xdr_error; | |
436 | } | |
437 | } | |
1da177e4 LT |
438 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
439 | READ_BUF(4); | |
440 | len += 4; | |
06553991 | 441 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
442 | switch (dummy32) { |
443 | case NFS4_SET_TO_CLIENT_TIME: | |
1da177e4 | 444 | len += 12; |
95582b00 DD |
445 | status = nfsd4_decode_time(argp, &ts); |
446 | iattr->ia_mtime = timespec_to_timespec64(ts); | |
4c94e13e CH |
447 | if (status) |
448 | return status; | |
1da177e4 LT |
449 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); |
450 | break; | |
451 | case NFS4_SET_TO_SERVER_TIME: | |
452 | iattr->ia_valid |= ATTR_MTIME; | |
453 | break; | |
454 | default: | |
455 | goto xdr_error; | |
456 | } | |
457 | } | |
18032ca0 DQ |
458 | |
459 | label->len = 0; | |
2285ae76 AB |
460 | if (IS_ENABLED(CONFIG_NFSD_V4_SECURITY_LABEL) && |
461 | bmval[2] & FATTR4_WORD2_SECURITY_LABEL) { | |
18032ca0 DQ |
462 | READ_BUF(4); |
463 | len += 4; | |
06553991 | 464 | dummy32 = be32_to_cpup(p++); /* lfs: we don't use it */ |
18032ca0 DQ |
465 | READ_BUF(4); |
466 | len += 4; | |
06553991 | 467 | dummy32 = be32_to_cpup(p++); /* pi: we don't use it either */ |
18032ca0 DQ |
468 | READ_BUF(4); |
469 | len += 4; | |
06553991 | 470 | dummy32 = be32_to_cpup(p++); |
18032ca0 | 471 | READ_BUF(dummy32); |
1ec8c0c4 | 472 | if (dummy32 > NFS4_MAXLABELLEN) |
18032ca0 DQ |
473 | return nfserr_badlabel; |
474 | len += (XDR_QUADLEN(dummy32) << 2); | |
475 | READMEM(buf, dummy32); | |
29c353b3 BF |
476 | label->len = dummy32; |
477 | label->data = svcxdr_dupstr(argp, buf, dummy32); | |
18032ca0 DQ |
478 | if (!label->data) |
479 | return nfserr_jukebox; | |
18032ca0 | 480 | } |
47057abd AG |
481 | if (bmval[2] & FATTR4_WORD2_MODE_UMASK) { |
482 | if (!umask) | |
483 | goto xdr_error; | |
484 | READ_BUF(8); | |
485 | len += 8; | |
486 | dummy32 = be32_to_cpup(p++); | |
487 | iattr->ia_mode = dummy32 & (S_IFMT | S_IALLUGO); | |
488 | dummy32 = be32_to_cpup(p++); | |
489 | *umask = dummy32 & S_IRWXUGO; | |
490 | iattr->ia_valid |= ATTR_MODE; | |
491 | } | |
e864c189 | 492 | if (len != expected_len) |
1da177e4 LT |
493 | goto xdr_error; |
494 | ||
495 | DECODE_TAIL; | |
1da177e4 LT |
496 | } |
497 | ||
e31a1b66 BH |
498 | static __be32 |
499 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
500 | { | |
501 | DECODE_HEAD; | |
502 | ||
503 | READ_BUF(sizeof(stateid_t)); | |
06553991 | 504 | sid->si_generation = be32_to_cpup(p++); |
e31a1b66 BH |
505 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); |
506 | ||
507 | DECODE_TAIL; | |
508 | } | |
509 | ||
b37ad28b | 510 | static __be32 |
1da177e4 LT |
511 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
512 | { | |
513 | DECODE_HEAD; | |
514 | ||
515 | READ_BUF(4); | |
06553991 | 516 | access->ac_req_access = be32_to_cpup(p++); |
1da177e4 LT |
517 | |
518 | DECODE_TAIL; | |
519 | } | |
520 | ||
acb2887e BF |
521 | static __be32 nfsd4_decode_cb_sec(struct nfsd4_compoundargs *argp, struct nfsd4_cb_sec *cbs) |
522 | { | |
523 | DECODE_HEAD; | |
12fc3e92 | 524 | u32 dummy, uid, gid; |
acb2887e BF |
525 | char *machine_name; |
526 | int i; | |
527 | int nr_secflavs; | |
528 | ||
529 | /* callback_sec_params4 */ | |
530 | READ_BUF(4); | |
06553991 | 531 | nr_secflavs = be32_to_cpup(p++); |
57569a70 BF |
532 | if (nr_secflavs) |
533 | cbs->flavor = (u32)(-1); | |
534 | else | |
535 | /* Is this legal? Be generous, take it to mean AUTH_NONE: */ | |
536 | cbs->flavor = 0; | |
acb2887e BF |
537 | for (i = 0; i < nr_secflavs; ++i) { |
538 | READ_BUF(4); | |
06553991 | 539 | dummy = be32_to_cpup(p++); |
acb2887e BF |
540 | switch (dummy) { |
541 | case RPC_AUTH_NULL: | |
542 | /* Nothing to read */ | |
12fc3e92 BF |
543 | if (cbs->flavor == (u32)(-1)) |
544 | cbs->flavor = RPC_AUTH_NULL; | |
acb2887e BF |
545 | break; |
546 | case RPC_AUTH_UNIX: | |
547 | READ_BUF(8); | |
548 | /* stamp */ | |
06553991 | 549 | dummy = be32_to_cpup(p++); |
acb2887e BF |
550 | |
551 | /* machine name */ | |
06553991 | 552 | dummy = be32_to_cpup(p++); |
acb2887e BF |
553 | READ_BUF(dummy); |
554 | SAVEMEM(machine_name, dummy); | |
555 | ||
556 | /* uid, gid */ | |
557 | READ_BUF(8); | |
06553991 BF |
558 | uid = be32_to_cpup(p++); |
559 | gid = be32_to_cpup(p++); | |
acb2887e BF |
560 | |
561 | /* more gids */ | |
562 | READ_BUF(4); | |
06553991 | 563 | dummy = be32_to_cpup(p++); |
acb2887e | 564 | READ_BUF(dummy * 4); |
12fc3e92 | 565 | if (cbs->flavor == (u32)(-1)) { |
03bc6d1c EB |
566 | kuid_t kuid = make_kuid(&init_user_ns, uid); |
567 | kgid_t kgid = make_kgid(&init_user_ns, gid); | |
568 | if (uid_valid(kuid) && gid_valid(kgid)) { | |
569 | cbs->uid = kuid; | |
570 | cbs->gid = kgid; | |
571 | cbs->flavor = RPC_AUTH_UNIX; | |
572 | } else { | |
573 | dprintk("RPC_AUTH_UNIX with invalid" | |
574 | "uid or gid ignoring!\n"); | |
575 | } | |
12fc3e92 | 576 | } |
acb2887e BF |
577 | break; |
578 | case RPC_AUTH_GSS: | |
579 | dprintk("RPC_AUTH_GSS callback secflavor " | |
580 | "not supported!\n"); | |
581 | READ_BUF(8); | |
582 | /* gcbp_service */ | |
06553991 | 583 | dummy = be32_to_cpup(p++); |
acb2887e | 584 | /* gcbp_handle_from_server */ |
06553991 | 585 | dummy = be32_to_cpup(p++); |
acb2887e BF |
586 | READ_BUF(dummy); |
587 | p += XDR_QUADLEN(dummy); | |
588 | /* gcbp_handle_from_client */ | |
589 | READ_BUF(4); | |
06553991 | 590 | dummy = be32_to_cpup(p++); |
acb2887e BF |
591 | READ_BUF(dummy); |
592 | break; | |
593 | default: | |
594 | dprintk("Illegal callback secflavor\n"); | |
595 | return nfserr_inval; | |
596 | } | |
597 | } | |
598 | DECODE_TAIL; | |
599 | } | |
600 | ||
cb73a9f4 BF |
601 | static __be32 nfsd4_decode_backchannel_ctl(struct nfsd4_compoundargs *argp, struct nfsd4_backchannel_ctl *bc) |
602 | { | |
603 | DECODE_HEAD; | |
604 | ||
605 | READ_BUF(4); | |
06553991 | 606 | bc->bc_cb_program = be32_to_cpup(p++); |
cb73a9f4 BF |
607 | nfsd4_decode_cb_sec(argp, &bc->bc_cb_sec); |
608 | ||
609 | DECODE_TAIL; | |
610 | } | |
611 | ||
1d1bc8f2 BF |
612 | static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) |
613 | { | |
614 | DECODE_HEAD; | |
1d1bc8f2 BF |
615 | |
616 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 8); | |
617 | COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
06553991 | 618 | bcts->dir = be32_to_cpup(p++); |
6ce2357f BS |
619 | /* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker |
620 | * could help us figure out we should be using it. */ | |
1d1bc8f2 BF |
621 | DECODE_TAIL; |
622 | } | |
623 | ||
b37ad28b | 624 | static __be32 |
1da177e4 LT |
625 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
626 | { | |
627 | DECODE_HEAD; | |
628 | ||
e31a1b66 | 629 | READ_BUF(4); |
06553991 | 630 | close->cl_seqid = be32_to_cpup(p++); |
e31a1b66 | 631 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
1da177e4 LT |
632 | |
633 | DECODE_TAIL; | |
634 | } | |
635 | ||
636 | ||
b37ad28b | 637 | static __be32 |
1da177e4 LT |
638 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
639 | { | |
640 | DECODE_HEAD; | |
641 | ||
642 | READ_BUF(12); | |
542d1ab3 | 643 | p = xdr_decode_hyper(p, &commit->co_offset); |
06553991 | 644 | commit->co_count = be32_to_cpup(p++); |
1da177e4 LT |
645 | |
646 | DECODE_TAIL; | |
647 | } | |
648 | ||
b37ad28b | 649 | static __be32 |
1da177e4 LT |
650 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
651 | { | |
652 | DECODE_HEAD; | |
653 | ||
654 | READ_BUF(4); | |
06553991 | 655 | create->cr_type = be32_to_cpup(p++); |
1da177e4 LT |
656 | switch (create->cr_type) { |
657 | case NF4LNK: | |
658 | READ_BUF(4); | |
7fb84306 BF |
659 | create->cr_datalen = be32_to_cpup(p++); |
660 | READ_BUF(create->cr_datalen); | |
29c353b3 | 661 | create->cr_data = svcxdr_dupstr(argp, p, create->cr_datalen); |
7fb84306 | 662 | if (!create->cr_data) |
76f47128 | 663 | return nfserr_jukebox; |
1da177e4 LT |
664 | break; |
665 | case NF4BLK: | |
666 | case NF4CHR: | |
667 | READ_BUF(8); | |
06553991 BF |
668 | create->cr_specdata1 = be32_to_cpup(p++); |
669 | create->cr_specdata2 = be32_to_cpup(p++); | |
1da177e4 LT |
670 | break; |
671 | case NF4SOCK: | |
672 | case NF4FIFO: | |
673 | case NF4DIR: | |
674 | default: | |
675 | break; | |
676 | } | |
677 | ||
678 | READ_BUF(4); | |
06553991 | 679 | create->cr_namelen = be32_to_cpup(p++); |
1da177e4 LT |
680 | READ_BUF(create->cr_namelen); |
681 | SAVEMEM(create->cr_name, create->cr_namelen); | |
a36b1725 | 682 | if ((status = check_filename(create->cr_name, create->cr_namelen))) |
1da177e4 LT |
683 | return status; |
684 | ||
3c8e0316 | 685 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
47057abd | 686 | &create->cr_acl, &create->cr_label, |
880a3a53 | 687 | &create->cr_umask); |
c0d6fc8a | 688 | if (status) |
1da177e4 LT |
689 | goto out; |
690 | ||
691 | DECODE_TAIL; | |
692 | } | |
693 | ||
b37ad28b | 694 | static inline __be32 |
1da177e4 LT |
695 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
696 | { | |
e31a1b66 | 697 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
1da177e4 LT |
698 | } |
699 | ||
b37ad28b | 700 | static inline __be32 |
1da177e4 LT |
701 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
702 | { | |
703 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
704 | } | |
705 | ||
b37ad28b | 706 | static __be32 |
1da177e4 LT |
707 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
708 | { | |
709 | DECODE_HEAD; | |
710 | ||
711 | READ_BUF(4); | |
06553991 | 712 | link->li_namelen = be32_to_cpup(p++); |
1da177e4 LT |
713 | READ_BUF(link->li_namelen); |
714 | SAVEMEM(link->li_name, link->li_namelen); | |
a36b1725 | 715 | if ((status = check_filename(link->li_name, link->li_namelen))) |
1da177e4 LT |
716 | return status; |
717 | ||
718 | DECODE_TAIL; | |
719 | } | |
720 | ||
b37ad28b | 721 | static __be32 |
1da177e4 LT |
722 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
723 | { | |
724 | DECODE_HEAD; | |
725 | ||
1da177e4 LT |
726 | /* |
727 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
728 | */ | |
729 | READ_BUF(28); | |
06553991 | 730 | lock->lk_type = be32_to_cpup(p++); |
1da177e4 LT |
731 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) |
732 | goto xdr_error; | |
06553991 | 733 | lock->lk_reclaim = be32_to_cpup(p++); |
542d1ab3 BF |
734 | p = xdr_decode_hyper(p, &lock->lk_offset); |
735 | p = xdr_decode_hyper(p, &lock->lk_length); | |
06553991 | 736 | lock->lk_is_new = be32_to_cpup(p++); |
1da177e4 LT |
737 | |
738 | if (lock->lk_is_new) { | |
e31a1b66 | 739 | READ_BUF(4); |
06553991 | 740 | lock->lk_new_open_seqid = be32_to_cpup(p++); |
e31a1b66 BH |
741 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
742 | if (status) | |
743 | return status; | |
744 | READ_BUF(8 + sizeof(clientid_t)); | |
06553991 | 745 | lock->lk_new_lock_seqid = be32_to_cpup(p++); |
1da177e4 | 746 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); |
06553991 | 747 | lock->lk_new_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
748 | READ_BUF(lock->lk_new_owner.len); |
749 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
750 | } else { | |
e31a1b66 BH |
751 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
752 | if (status) | |
753 | return status; | |
754 | READ_BUF(4); | |
06553991 | 755 | lock->lk_old_lock_seqid = be32_to_cpup(p++); |
1da177e4 LT |
756 | } |
757 | ||
758 | DECODE_TAIL; | |
759 | } | |
760 | ||
b37ad28b | 761 | static __be32 |
1da177e4 LT |
762 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
763 | { | |
764 | DECODE_HEAD; | |
765 | ||
766 | READ_BUF(32); | |
06553991 | 767 | lockt->lt_type = be32_to_cpup(p++); |
1da177e4 LT |
768 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) |
769 | goto xdr_error; | |
542d1ab3 BF |
770 | p = xdr_decode_hyper(p, &lockt->lt_offset); |
771 | p = xdr_decode_hyper(p, &lockt->lt_length); | |
1da177e4 | 772 | COPYMEM(&lockt->lt_clientid, 8); |
06553991 | 773 | lockt->lt_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
774 | READ_BUF(lockt->lt_owner.len); |
775 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
776 | ||
777 | DECODE_TAIL; | |
778 | } | |
779 | ||
b37ad28b | 780 | static __be32 |
1da177e4 LT |
781 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
782 | { | |
783 | DECODE_HEAD; | |
784 | ||
e31a1b66 | 785 | READ_BUF(8); |
06553991 | 786 | locku->lu_type = be32_to_cpup(p++); |
1da177e4 LT |
787 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) |
788 | goto xdr_error; | |
06553991 | 789 | locku->lu_seqid = be32_to_cpup(p++); |
e31a1b66 BH |
790 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
791 | if (status) | |
792 | return status; | |
793 | READ_BUF(16); | |
542d1ab3 BF |
794 | p = xdr_decode_hyper(p, &locku->lu_offset); |
795 | p = xdr_decode_hyper(p, &locku->lu_length); | |
1da177e4 LT |
796 | |
797 | DECODE_TAIL; | |
798 | } | |
799 | ||
b37ad28b | 800 | static __be32 |
1da177e4 LT |
801 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
802 | { | |
803 | DECODE_HEAD; | |
804 | ||
805 | READ_BUF(4); | |
06553991 | 806 | lookup->lo_len = be32_to_cpup(p++); |
1da177e4 LT |
807 | READ_BUF(lookup->lo_len); |
808 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
a36b1725 | 809 | if ((status = check_filename(lookup->lo_name, lookup->lo_len))) |
1da177e4 LT |
810 | return status; |
811 | ||
812 | DECODE_TAIL; | |
813 | } | |
814 | ||
2c8bd7e0 | 815 | static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when) |
04f9e664 BF |
816 | { |
817 | __be32 *p; | |
818 | u32 w; | |
819 | ||
820 | READ_BUF(4); | |
06553991 | 821 | w = be32_to_cpup(p++); |
2c8bd7e0 BH |
822 | *share_access = w & NFS4_SHARE_ACCESS_MASK; |
823 | *deleg_want = w & NFS4_SHARE_WANT_MASK; | |
824 | if (deleg_when) | |
825 | *deleg_when = w & NFS4_SHARE_WHEN_MASK; | |
826 | ||
04f9e664 BF |
827 | switch (w & NFS4_SHARE_ACCESS_MASK) { |
828 | case NFS4_SHARE_ACCESS_READ: | |
829 | case NFS4_SHARE_ACCESS_WRITE: | |
830 | case NFS4_SHARE_ACCESS_BOTH: | |
831 | break; | |
832 | default: | |
833 | return nfserr_bad_xdr; | |
834 | } | |
fc0d14fe | 835 | w &= ~NFS4_SHARE_ACCESS_MASK; |
04f9e664 BF |
836 | if (!w) |
837 | return nfs_ok; | |
838 | if (!argp->minorversion) | |
839 | return nfserr_bad_xdr; | |
840 | switch (w & NFS4_SHARE_WANT_MASK) { | |
841 | case NFS4_SHARE_WANT_NO_PREFERENCE: | |
842 | case NFS4_SHARE_WANT_READ_DELEG: | |
843 | case NFS4_SHARE_WANT_WRITE_DELEG: | |
844 | case NFS4_SHARE_WANT_ANY_DELEG: | |
845 | case NFS4_SHARE_WANT_NO_DELEG: | |
846 | case NFS4_SHARE_WANT_CANCEL: | |
847 | break; | |
848 | default: | |
849 | return nfserr_bad_xdr; | |
850 | } | |
92bac8c5 | 851 | w &= ~NFS4_SHARE_WANT_MASK; |
04f9e664 BF |
852 | if (!w) |
853 | return nfs_ok; | |
2c8bd7e0 BH |
854 | |
855 | if (!deleg_when) /* open_downgrade */ | |
856 | return nfserr_inval; | |
04f9e664 BF |
857 | switch (w) { |
858 | case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL: | |
859 | case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED: | |
c668fc6d BH |
860 | case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL | |
861 | NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED): | |
04f9e664 BF |
862 | return nfs_ok; |
863 | } | |
864 | xdr_error: | |
865 | return nfserr_bad_xdr; | |
866 | } | |
867 | ||
868 | static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x) | |
869 | { | |
870 | __be32 *p; | |
871 | ||
872 | READ_BUF(4); | |
06553991 | 873 | *x = be32_to_cpup(p++); |
04f9e664 | 874 | /* Note: unlinke access bits, deny bits may be zero. */ |
01cd4afa | 875 | if (*x & ~NFS4_SHARE_DENY_BOTH) |
04f9e664 BF |
876 | return nfserr_bad_xdr; |
877 | return nfs_ok; | |
878 | xdr_error: | |
879 | return nfserr_bad_xdr; | |
880 | } | |
881 | ||
a084daf5 BF |
882 | static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o) |
883 | { | |
884 | __be32 *p; | |
885 | ||
886 | READ_BUF(4); | |
06553991 | 887 | o->len = be32_to_cpup(p++); |
a084daf5 BF |
888 | |
889 | if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT) | |
890 | return nfserr_bad_xdr; | |
891 | ||
892 | READ_BUF(o->len); | |
893 | SAVEMEM(o->data, o->len); | |
894 | return nfs_ok; | |
895 | xdr_error: | |
896 | return nfserr_bad_xdr; | |
897 | } | |
898 | ||
b37ad28b | 899 | static __be32 |
1da177e4 LT |
900 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
901 | { | |
902 | DECODE_HEAD; | |
2c8bd7e0 | 903 | u32 dummy; |
1da177e4 LT |
904 | |
905 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
906 | open->op_iattr.ia_valid = 0; | |
fe0750e5 | 907 | open->op_openowner = NULL; |
1da177e4 | 908 | |
9d313b17 | 909 | open->op_xdr_error = 0; |
1da177e4 | 910 | /* seqid, share_access, share_deny, clientid, ownerlen */ |
04f9e664 | 911 | READ_BUF(4); |
06553991 | 912 | open->op_seqid = be32_to_cpup(p++); |
2c8bd7e0 BH |
913 | /* decode, yet ignore deleg_when until supported */ |
914 | status = nfsd4_decode_share_access(argp, &open->op_share_access, | |
915 | &open->op_deleg_want, &dummy); | |
04f9e664 BF |
916 | if (status) |
917 | goto xdr_error; | |
918 | status = nfsd4_decode_share_deny(argp, &open->op_share_deny); | |
919 | if (status) | |
920 | goto xdr_error; | |
a084daf5 | 921 | READ_BUF(sizeof(clientid_t)); |
1da177e4 | 922 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); |
a084daf5 BF |
923 | status = nfsd4_decode_opaque(argp, &open->op_owner); |
924 | if (status) | |
925 | goto xdr_error; | |
926 | READ_BUF(4); | |
06553991 | 927 | open->op_create = be32_to_cpup(p++); |
1da177e4 LT |
928 | switch (open->op_create) { |
929 | case NFS4_OPEN_NOCREATE: | |
930 | break; | |
931 | case NFS4_OPEN_CREATE: | |
932 | READ_BUF(4); | |
06553991 | 933 | open->op_createmode = be32_to_cpup(p++); |
1da177e4 LT |
934 | switch (open->op_createmode) { |
935 | case NFS4_CREATE_UNCHECKED: | |
936 | case NFS4_CREATE_GUARDED: | |
c0d6fc8a | 937 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
47057abd | 938 | &open->op_iattr, &open->op_acl, &open->op_label, |
880a3a53 | 939 | &open->op_umask); |
c0d6fc8a | 940 | if (status) |
1da177e4 LT |
941 | goto out; |
942 | break; | |
943 | case NFS4_CREATE_EXCLUSIVE: | |
ab4684d1 CL |
944 | READ_BUF(NFS4_VERIFIER_SIZE); |
945 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 946 | break; |
79fb54ab BH |
947 | case NFS4_CREATE_EXCLUSIVE4_1: |
948 | if (argp->minorversion < 1) | |
949 | goto xdr_error; | |
ab4684d1 CL |
950 | READ_BUF(NFS4_VERIFIER_SIZE); |
951 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
79fb54ab | 952 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
47057abd | 953 | &open->op_iattr, &open->op_acl, &open->op_label, |
880a3a53 | 954 | &open->op_umask); |
79fb54ab BH |
955 | if (status) |
956 | goto out; | |
957 | break; | |
1da177e4 LT |
958 | default: |
959 | goto xdr_error; | |
960 | } | |
961 | break; | |
962 | default: | |
963 | goto xdr_error; | |
964 | } | |
965 | ||
966 | /* open_claim */ | |
967 | READ_BUF(4); | |
06553991 | 968 | open->op_claim_type = be32_to_cpup(p++); |
1da177e4 LT |
969 | switch (open->op_claim_type) { |
970 | case NFS4_OPEN_CLAIM_NULL: | |
971 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
972 | READ_BUF(4); | |
06553991 | 973 | open->op_fname.len = be32_to_cpup(p++); |
1da177e4 LT |
974 | READ_BUF(open->op_fname.len); |
975 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 976 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
977 | return status; |
978 | break; | |
979 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
980 | READ_BUF(4); | |
06553991 | 981 | open->op_delegate_type = be32_to_cpup(p++); |
1da177e4 LT |
982 | break; |
983 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
e31a1b66 BH |
984 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
985 | if (status) | |
986 | return status; | |
987 | READ_BUF(4); | |
06553991 | 988 | open->op_fname.len = be32_to_cpup(p++); |
1da177e4 LT |
989 | READ_BUF(open->op_fname.len); |
990 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 991 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
992 | return status; |
993 | break; | |
8b289b2c BF |
994 | case NFS4_OPEN_CLAIM_FH: |
995 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
996 | if (argp->minorversion < 1) | |
997 | goto xdr_error; | |
998 | /* void */ | |
999 | break; | |
1000 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1001 | if (argp->minorversion < 1) | |
1002 | goto xdr_error; | |
1003 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); | |
1004 | if (status) | |
1005 | return status; | |
1006 | break; | |
1da177e4 LT |
1007 | default: |
1008 | goto xdr_error; | |
1009 | } | |
1010 | ||
1011 | DECODE_TAIL; | |
1012 | } | |
1013 | ||
b37ad28b | 1014 | static __be32 |
1da177e4 LT |
1015 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
1016 | { | |
1017 | DECODE_HEAD; | |
e1a90ebd AS |
1018 | |
1019 | if (argp->minorversion >= 1) | |
1020 | return nfserr_notsupp; | |
1021 | ||
e31a1b66 BH |
1022 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
1023 | if (status) | |
1024 | return status; | |
1025 | READ_BUF(4); | |
06553991 | 1026 | open_conf->oc_seqid = be32_to_cpup(p++); |
e1a90ebd | 1027 | |
1da177e4 LT |
1028 | DECODE_TAIL; |
1029 | } | |
1030 | ||
b37ad28b | 1031 | static __be32 |
1da177e4 LT |
1032 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
1033 | { | |
1034 | DECODE_HEAD; | |
1035 | ||
e31a1b66 BH |
1036 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
1037 | if (status) | |
1038 | return status; | |
04f9e664 | 1039 | READ_BUF(4); |
06553991 | 1040 | open_down->od_seqid = be32_to_cpup(p++); |
2c8bd7e0 BH |
1041 | status = nfsd4_decode_share_access(argp, &open_down->od_share_access, |
1042 | &open_down->od_deleg_want, NULL); | |
04f9e664 BF |
1043 | if (status) |
1044 | return status; | |
1045 | status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny); | |
1046 | if (status) | |
1047 | return status; | |
1da177e4 LT |
1048 | DECODE_TAIL; |
1049 | } | |
1050 | ||
b37ad28b | 1051 | static __be32 |
1da177e4 LT |
1052 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
1053 | { | |
1054 | DECODE_HEAD; | |
1055 | ||
1056 | READ_BUF(4); | |
06553991 | 1057 | putfh->pf_fhlen = be32_to_cpup(p++); |
1da177e4 LT |
1058 | if (putfh->pf_fhlen > NFS4_FHSIZE) |
1059 | goto xdr_error; | |
1060 | READ_BUF(putfh->pf_fhlen); | |
1061 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
1062 | ||
1063 | DECODE_TAIL; | |
1064 | } | |
1065 | ||
e1a90ebd AS |
1066 | static __be32 |
1067 | nfsd4_decode_putpubfh(struct nfsd4_compoundargs *argp, void *p) | |
1068 | { | |
1069 | if (argp->minorversion == 0) | |
1070 | return nfs_ok; | |
1071 | return nfserr_notsupp; | |
1072 | } | |
1073 | ||
b37ad28b | 1074 | static __be32 |
1da177e4 LT |
1075 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
1076 | { | |
1077 | DECODE_HEAD; | |
1078 | ||
e31a1b66 BH |
1079 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
1080 | if (status) | |
1081 | return status; | |
1082 | READ_BUF(12); | |
542d1ab3 | 1083 | p = xdr_decode_hyper(p, &read->rd_offset); |
06553991 | 1084 | read->rd_length = be32_to_cpup(p++); |
1da177e4 LT |
1085 | |
1086 | DECODE_TAIL; | |
1087 | } | |
1088 | ||
b37ad28b | 1089 | static __be32 |
1da177e4 LT |
1090 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
1091 | { | |
1092 | DECODE_HEAD; | |
1093 | ||
1094 | READ_BUF(24); | |
542d1ab3 | 1095 | p = xdr_decode_hyper(p, &readdir->rd_cookie); |
1da177e4 | 1096 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); |
06553991 BF |
1097 | readdir->rd_dircount = be32_to_cpup(p++); |
1098 | readdir->rd_maxcount = be32_to_cpup(p++); | |
1da177e4 LT |
1099 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) |
1100 | goto out; | |
1101 | ||
1102 | DECODE_TAIL; | |
1103 | } | |
1104 | ||
b37ad28b | 1105 | static __be32 |
1da177e4 LT |
1106 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
1107 | { | |
1108 | DECODE_HEAD; | |
1109 | ||
1110 | READ_BUF(4); | |
06553991 | 1111 | remove->rm_namelen = be32_to_cpup(p++); |
1da177e4 LT |
1112 | READ_BUF(remove->rm_namelen); |
1113 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
a36b1725 | 1114 | if ((status = check_filename(remove->rm_name, remove->rm_namelen))) |
1da177e4 LT |
1115 | return status; |
1116 | ||
1117 | DECODE_TAIL; | |
1118 | } | |
1119 | ||
b37ad28b | 1120 | static __be32 |
1da177e4 LT |
1121 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
1122 | { | |
1123 | DECODE_HEAD; | |
1124 | ||
1125 | READ_BUF(4); | |
06553991 | 1126 | rename->rn_snamelen = be32_to_cpup(p++); |
4aed9c46 | 1127 | READ_BUF(rename->rn_snamelen); |
1da177e4 | 1128 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); |
4aed9c46 | 1129 | READ_BUF(4); |
06553991 | 1130 | rename->rn_tnamelen = be32_to_cpup(p++); |
1da177e4 LT |
1131 | READ_BUF(rename->rn_tnamelen); |
1132 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
a36b1725 | 1133 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen))) |
1da177e4 | 1134 | return status; |
a36b1725 | 1135 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen))) |
1da177e4 LT |
1136 | return status; |
1137 | ||
1138 | DECODE_TAIL; | |
1139 | } | |
1140 | ||
b37ad28b | 1141 | static __be32 |
1da177e4 LT |
1142 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
1143 | { | |
1144 | DECODE_HEAD; | |
1145 | ||
e1a90ebd AS |
1146 | if (argp->minorversion >= 1) |
1147 | return nfserr_notsupp; | |
1148 | ||
1da177e4 LT |
1149 | READ_BUF(sizeof(clientid_t)); |
1150 | COPYMEM(clientid, sizeof(clientid_t)); | |
1151 | ||
1152 | DECODE_TAIL; | |
1153 | } | |
1154 | ||
dcb488a3 AA |
1155 | static __be32 |
1156 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
1157 | struct nfsd4_secinfo *secinfo) | |
1158 | { | |
1159 | DECODE_HEAD; | |
1160 | ||
1161 | READ_BUF(4); | |
06553991 | 1162 | secinfo->si_namelen = be32_to_cpup(p++); |
dcb488a3 AA |
1163 | READ_BUF(secinfo->si_namelen); |
1164 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
a36b1725 | 1165 | status = check_filename(secinfo->si_name, secinfo->si_namelen); |
dcb488a3 AA |
1166 | if (status) |
1167 | return status; | |
1168 | DECODE_TAIL; | |
1169 | } | |
1170 | ||
04f4ad16 BF |
1171 | static __be32 |
1172 | nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, | |
1173 | struct nfsd4_secinfo_no_name *sin) | |
1174 | { | |
1175 | DECODE_HEAD; | |
1176 | ||
1177 | READ_BUF(4); | |
06553991 | 1178 | sin->sin_style = be32_to_cpup(p++); |
04f4ad16 BF |
1179 | DECODE_TAIL; |
1180 | } | |
1181 | ||
b37ad28b | 1182 | static __be32 |
1da177e4 LT |
1183 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
1184 | { | |
e31a1b66 | 1185 | __be32 status; |
1da177e4 | 1186 | |
e31a1b66 BH |
1187 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
1188 | if (status) | |
1189 | return status; | |
3c8e0316 | 1190 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
47057abd | 1191 | &setattr->sa_acl, &setattr->sa_label, NULL); |
1da177e4 LT |
1192 | } |
1193 | ||
b37ad28b | 1194 | static __be32 |
1da177e4 LT |
1195 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
1196 | { | |
1197 | DECODE_HEAD; | |
1198 | ||
e1a90ebd AS |
1199 | if (argp->minorversion >= 1) |
1200 | return nfserr_notsupp; | |
1201 | ||
ab4684d1 CL |
1202 | READ_BUF(NFS4_VERIFIER_SIZE); |
1203 | COPYMEM(setclientid->se_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 1204 | |
a084daf5 BF |
1205 | status = nfsd4_decode_opaque(argp, &setclientid->se_name); |
1206 | if (status) | |
1207 | return nfserr_bad_xdr; | |
1208 | READ_BUF(8); | |
06553991 BF |
1209 | setclientid->se_callback_prog = be32_to_cpup(p++); |
1210 | setclientid->se_callback_netid_len = be32_to_cpup(p++); | |
4aed9c46 | 1211 | READ_BUF(setclientid->se_callback_netid_len); |
1da177e4 | 1212 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); |
4aed9c46 | 1213 | READ_BUF(4); |
06553991 | 1214 | setclientid->se_callback_addr_len = be32_to_cpup(p++); |
1da177e4 | 1215 | |
4aed9c46 | 1216 | READ_BUF(setclientid->se_callback_addr_len); |
1da177e4 | 1217 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); |
4aed9c46 | 1218 | READ_BUF(4); |
06553991 | 1219 | setclientid->se_callback_ident = be32_to_cpup(p++); |
1da177e4 LT |
1220 | |
1221 | DECODE_TAIL; | |
1222 | } | |
1223 | ||
b37ad28b | 1224 | static __be32 |
1da177e4 LT |
1225 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
1226 | { | |
1227 | DECODE_HEAD; | |
1228 | ||
e1a90ebd AS |
1229 | if (argp->minorversion >= 1) |
1230 | return nfserr_notsupp; | |
1231 | ||
ab4684d1 | 1232 | READ_BUF(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 1233 | COPYMEM(&scd_c->sc_clientid, 8); |
ab4684d1 | 1234 | COPYMEM(&scd_c->sc_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
1235 | |
1236 | DECODE_TAIL; | |
1237 | } | |
1238 | ||
1239 | /* Also used for NVERIFY */ | |
b37ad28b | 1240 | static __be32 |
1da177e4 LT |
1241 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
1242 | { | |
1da177e4 LT |
1243 | DECODE_HEAD; |
1244 | ||
1245 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
1246 | goto out; | |
1247 | ||
1248 | /* For convenience's sake, we compare raw xdr'd attributes in | |
e5f95703 BF |
1249 | * nfsd4_proc_verify */ |
1250 | ||
1da177e4 | 1251 | READ_BUF(4); |
06553991 | 1252 | verify->ve_attrlen = be32_to_cpup(p++); |
1da177e4 LT |
1253 | READ_BUF(verify->ve_attrlen); |
1254 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
1255 | ||
1256 | DECODE_TAIL; | |
1257 | } | |
1258 | ||
b37ad28b | 1259 | static __be32 |
1da177e4 LT |
1260 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
1261 | { | |
1262 | int avail; | |
1da177e4 LT |
1263 | int len; |
1264 | DECODE_HEAD; | |
1265 | ||
e31a1b66 BH |
1266 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
1267 | if (status) | |
1268 | return status; | |
1269 | READ_BUF(16); | |
542d1ab3 | 1270 | p = xdr_decode_hyper(p, &write->wr_offset); |
06553991 | 1271 | write->wr_stable_how = be32_to_cpup(p++); |
54bbb7d2 | 1272 | if (write->wr_stable_how > NFS_FILE_SYNC) |
1da177e4 | 1273 | goto xdr_error; |
06553991 | 1274 | write->wr_buflen = be32_to_cpup(p++); |
1da177e4 LT |
1275 | |
1276 | /* Sorry .. no magic macros for this.. * | |
1277 | * READ_BUF(write->wr_buflen); | |
1278 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
1279 | */ | |
1280 | avail = (char*)argp->end - (char*)argp->p; | |
1281 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
1282 | dprintk("NFSD: xdr error (%s:%d)\n", |
1283 | __FILE__, __LINE__); | |
1da177e4 LT |
1284 | goto xdr_error; |
1285 | } | |
70cc7f75 BF |
1286 | write->wr_head.iov_base = p; |
1287 | write->wr_head.iov_len = avail; | |
70cc7f75 | 1288 | write->wr_pagelist = argp->pagelist; |
5a80a54d BF |
1289 | |
1290 | len = XDR_QUADLEN(write->wr_buflen) << 2; | |
1291 | if (len >= avail) { | |
1292 | int pages; | |
1293 | ||
1294 | len -= avail; | |
1295 | ||
1296 | pages = len >> PAGE_SHIFT; | |
1297 | argp->pagelist += pages; | |
1298 | argp->pagelen -= pages * PAGE_SIZE; | |
1299 | len -= pages * PAGE_SIZE; | |
1300 | ||
fc788f64 | 1301 | next_decode_page(argp); |
1da177e4 | 1302 | } |
5a80a54d | 1303 | argp->p += XDR_QUADLEN(len); |
1da177e4 LT |
1304 | |
1305 | DECODE_TAIL; | |
1306 | } | |
1307 | ||
b37ad28b | 1308 | static __be32 |
1da177e4 LT |
1309 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
1310 | { | |
1311 | DECODE_HEAD; | |
1312 | ||
e1a90ebd AS |
1313 | if (argp->minorversion >= 1) |
1314 | return nfserr_notsupp; | |
1315 | ||
1da177e4 LT |
1316 | READ_BUF(12); |
1317 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
06553991 | 1318 | rlockowner->rl_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
1319 | READ_BUF(rlockowner->rl_owner.len); |
1320 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
1321 | ||
60adfc50 AA |
1322 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1323 | return nfserr_inval; | |
1da177e4 LT |
1324 | DECODE_TAIL; |
1325 | } | |
1326 | ||
2db134eb AA |
1327 | static __be32 |
1328 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1329 | struct nfsd4_exchange_id *exid) |
2db134eb | 1330 | { |
5afa040b | 1331 | int dummy, tmp; |
0733d213 AA |
1332 | DECODE_HEAD; |
1333 | ||
1334 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1335 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1336 | ||
a084daf5 BF |
1337 | status = nfsd4_decode_opaque(argp, &exid->clname); |
1338 | if (status) | |
1339 | return nfserr_bad_xdr; | |
0733d213 AA |
1340 | |
1341 | READ_BUF(4); | |
06553991 | 1342 | exid->flags = be32_to_cpup(p++); |
0733d213 AA |
1343 | |
1344 | /* Ignore state_protect4_a */ | |
1345 | READ_BUF(4); | |
06553991 | 1346 | exid->spa_how = be32_to_cpup(p++); |
0733d213 AA |
1347 | switch (exid->spa_how) { |
1348 | case SP4_NONE: | |
1349 | break; | |
1350 | case SP4_MACH_CRED: | |
1351 | /* spo_must_enforce */ | |
ed941643 AE |
1352 | status = nfsd4_decode_bitmap(argp, |
1353 | exid->spo_must_enforce); | |
1354 | if (status) | |
1355 | goto out; | |
0733d213 | 1356 | /* spo_must_allow */ |
ed941643 AE |
1357 | status = nfsd4_decode_bitmap(argp, exid->spo_must_allow); |
1358 | if (status) | |
1359 | goto out; | |
0733d213 AA |
1360 | break; |
1361 | case SP4_SSV: | |
1362 | /* ssp_ops */ | |
1363 | READ_BUF(4); | |
06553991 | 1364 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1365 | READ_BUF(dummy * 4); |
1366 | p += dummy; | |
1367 | ||
1368 | READ_BUF(4); | |
06553991 | 1369 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1370 | READ_BUF(dummy * 4); |
1371 | p += dummy; | |
1372 | ||
1373 | /* ssp_hash_algs<> */ | |
1374 | READ_BUF(4); | |
06553991 | 1375 | tmp = be32_to_cpup(p++); |
5afa040b MJ |
1376 | while (tmp--) { |
1377 | READ_BUF(4); | |
06553991 | 1378 | dummy = be32_to_cpup(p++); |
5afa040b MJ |
1379 | READ_BUF(dummy); |
1380 | p += XDR_QUADLEN(dummy); | |
1381 | } | |
0733d213 AA |
1382 | |
1383 | /* ssp_encr_algs<> */ | |
1384 | READ_BUF(4); | |
06553991 | 1385 | tmp = be32_to_cpup(p++); |
5afa040b MJ |
1386 | while (tmp--) { |
1387 | READ_BUF(4); | |
06553991 | 1388 | dummy = be32_to_cpup(p++); |
5afa040b MJ |
1389 | READ_BUF(dummy); |
1390 | p += XDR_QUADLEN(dummy); | |
1391 | } | |
0733d213 | 1392 | |
5ed96bc5 | 1393 | /* ignore ssp_window and ssp_num_gss_handles: */ |
0733d213 | 1394 | READ_BUF(8); |
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) { | |
3171822f 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); | |
edcc8452 | 1763 | p++; /* ca_consecutive: we always do consecutive copies */ |
29ae7f9d AS |
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 | ||
6308bc98 OK |
1770 | static __be32 |
1771 | nfsd4_decode_offload_status(struct nfsd4_compoundargs *argp, | |
1772 | struct nfsd4_offload_status *os) | |
1773 | { | |
1774 | return nfsd4_decode_stateid(argp, &os->stateid); | |
1775 | } | |
1776 | ||
24bab491 AS |
1777 | static __be32 |
1778 | nfsd4_decode_seek(struct nfsd4_compoundargs *argp, struct nfsd4_seek *seek) | |
1779 | { | |
1780 | DECODE_HEAD; | |
1781 | ||
1782 | status = nfsd4_decode_stateid(argp, &seek->seek_stateid); | |
1783 | if (status) | |
1784 | return status; | |
1785 | ||
1786 | READ_BUF(8 + 4); | |
1787 | p = xdr_decode_hyper(p, &seek->seek_offset); | |
1788 | seek->seek_whence = be32_to_cpup(p); | |
1789 | ||
1790 | DECODE_TAIL; | |
1791 | } | |
1792 | ||
347e0ad9 BH |
1793 | static __be32 |
1794 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1795 | { | |
1796 | return nfs_ok; | |
1797 | } | |
1798 | ||
3c375c6f BH |
1799 | static __be32 |
1800 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1801 | { | |
1e685ec2 | 1802 | return nfserr_notsupp; |
3c375c6f BH |
1803 | } |
1804 | ||
347e0ad9 BH |
1805 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1806 | ||
c1df609d | 1807 | static const nfsd4_dec nfsd4_dec_ops[] = { |
ad1060c8 BF |
1808 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1809 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1810 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1811 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1812 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1813 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1814 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1815 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1816 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1817 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1818 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1819 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1820 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1821 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1822 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1823 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1824 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1825 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1826 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1827 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
e1a90ebd | 1828 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_putpubfh, |
ad1060c8 BF |
1829 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1830 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1831 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1832 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1833 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1834 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1835 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1836 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1837 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1838 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1839 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1840 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1841 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1842 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1843 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1844 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
2db134eb AA |
1845 | |
1846 | /* new operations for NFSv4.1 */ | |
cb73a9f4 | 1847 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_backchannel_ctl, |
1d1bc8f2 | 1848 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
9064caae RD |
1849 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
1850 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
1851 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
e1ca12df | 1852 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, |
9064caae | 1853 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
9cf514cc CH |
1854 | #ifdef CONFIG_NFSD_PNFS |
1855 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_getdeviceinfo, | |
1856 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1857 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_layoutcommit, | |
1858 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_layoutget, | |
1859 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_layoutreturn, | |
1860 | #else | |
9064caae RD |
1861 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, |
1862 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1863 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1864 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1865 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
9cf514cc | 1866 | #endif |
04f4ad16 | 1867 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
9064caae RD |
1868 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
1869 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
17456804 | 1870 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid, |
9064caae | 1871 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
345c2842 | 1872 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, |
4dc6ec00 | 1873 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
87a15a80 AS |
1874 | |
1875 | /* new operations for NFSv4.2 */ | |
95d871f0 | 1876 | [OP_ALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate, |
29ae7f9d | 1877 | [OP_COPY] = (nfsd4_dec)nfsd4_decode_copy, |
87a15a80 | 1878 | [OP_COPY_NOTIFY] = (nfsd4_dec)nfsd4_decode_notsupp, |
b0cb9085 | 1879 | [OP_DEALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate, |
87a15a80 AS |
1880 | [OP_IO_ADVISE] = (nfsd4_dec)nfsd4_decode_notsupp, |
1881 | [OP_LAYOUTERROR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1882 | [OP_LAYOUTSTATS] = (nfsd4_dec)nfsd4_decode_notsupp, | |
885e2bf3 | 1883 | [OP_OFFLOAD_CANCEL] = (nfsd4_dec)nfsd4_decode_offload_status, |
6308bc98 | 1884 | [OP_OFFLOAD_STATUS] = (nfsd4_dec)nfsd4_decode_offload_status, |
87a15a80 | 1885 | [OP_READ_PLUS] = (nfsd4_dec)nfsd4_decode_notsupp, |
24bab491 | 1886 | [OP_SEEK] = (nfsd4_dec)nfsd4_decode_seek, |
87a15a80 | 1887 | [OP_WRITE_SAME] = (nfsd4_dec)nfsd4_decode_notsupp, |
ffa0160a | 1888 | [OP_CLONE] = (nfsd4_dec)nfsd4_decode_clone, |
2db134eb AA |
1889 | }; |
1890 | ||
e1a90ebd AS |
1891 | static inline bool |
1892 | nfsd4_opnum_in_range(struct nfsd4_compoundargs *argp, struct nfsd4_op *op) | |
1893 | { | |
8217d146 | 1894 | if (op->opnum < FIRST_NFS4_OP) |
e1a90ebd | 1895 | return false; |
8217d146 | 1896 | else if (argp->minorversion == 0 && op->opnum > LAST_NFS40_OP) |
e1a90ebd | 1897 | return false; |
8217d146 AS |
1898 | else if (argp->minorversion == 1 && op->opnum > LAST_NFS41_OP) |
1899 | return false; | |
1900 | else if (argp->minorversion == 2 && op->opnum > LAST_NFS42_OP) | |
e1a90ebd AS |
1901 | return false; |
1902 | return true; | |
1903 | } | |
f2feb96b | 1904 | |
b37ad28b | 1905 | static __be32 |
1da177e4 LT |
1906 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1907 | { | |
1908 | DECODE_HEAD; | |
1909 | struct nfsd4_op *op; | |
1091006c | 1910 | bool cachethis = false; |
a5cddc88 BF |
1911 | int auth_slack= argp->rqstp->rq_auth_slack; |
1912 | int max_reply = auth_slack + 8; /* opcnt, status */ | |
b0e35fda BF |
1913 | int readcount = 0; |
1914 | int readbytes = 0; | |
1da177e4 LT |
1915 | int i; |
1916 | ||
1da177e4 | 1917 | READ_BUF(4); |
06553991 | 1918 | argp->taglen = be32_to_cpup(p++); |
4aed9c46 | 1919 | READ_BUF(argp->taglen); |
1da177e4 | 1920 | SAVEMEM(argp->tag, argp->taglen); |
4aed9c46 | 1921 | READ_BUF(8); |
06553991 BF |
1922 | argp->minorversion = be32_to_cpup(p++); |
1923 | argp->opcnt = be32_to_cpup(p++); | |
4f0cefbf | 1924 | max_reply += 4 + (XDR_QUADLEN(argp->taglen) << 2); |
1da177e4 LT |
1925 | |
1926 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1927 | goto xdr_error; | |
0078117c BF |
1928 | /* |
1929 | * NFS4ERR_RESOURCE is a more helpful error than GARBAGE_ARGS | |
1930 | * here, so we return success at the xdr level so that | |
1931 | * nfsd4_proc can handle this is an NFS-level error. | |
1932 | */ | |
1933 | if (argp->opcnt > NFSD_MAX_OPS_PER_COMPOUND) | |
1934 | return 0; | |
1da177e4 | 1935 | |
e8c96f8c | 1936 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
5d6031ca | 1937 | argp->ops = kzalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1da177e4 LT |
1938 | if (!argp->ops) { |
1939 | argp->ops = argp->iops; | |
817cb9d4 | 1940 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1941 | goto xdr_error; |
1942 | } | |
1943 | } | |
1944 | ||
e1a90ebd | 1945 | if (argp->minorversion > NFSD_SUPPORTED_MINOR_VERSION) |
30cff1ff BH |
1946 | argp->opcnt = 0; |
1947 | ||
1da177e4 LT |
1948 | for (i = 0; i < argp->opcnt; i++) { |
1949 | op = &argp->ops[i]; | |
1950 | op->replay = NULL; | |
1951 | ||
8a61b18c | 1952 | READ_BUF(4); |
06553991 | 1953 | op->opnum = be32_to_cpup(p++); |
1da177e4 | 1954 | |
e1a90ebd AS |
1955 | if (nfsd4_opnum_in_range(argp, op)) |
1956 | op->status = nfsd4_dec_ops[op->opnum](argp, &op->u); | |
347e0ad9 | 1957 | else { |
1da177e4 LT |
1958 | op->opnum = OP_ILLEGAL; |
1959 | op->status = nfserr_op_illegal; | |
1da177e4 | 1960 | } |
f4f9ef4a | 1961 | op->opdesc = OPDESC(op); |
1091006c BF |
1962 | /* |
1963 | * We'll try to cache the result in the DRC if any one | |
1964 | * op in the compound wants to be cached: | |
1965 | */ | |
1966 | cachethis |= nfsd4_cache_this_op(op); | |
6ff40dec | 1967 | |
b0e35fda BF |
1968 | if (op->opnum == OP_READ) { |
1969 | readcount++; | |
1970 | readbytes += nfsd4_max_reply(argp->rqstp, op); | |
1971 | } else | |
1972 | max_reply += nfsd4_max_reply(argp->rqstp, op); | |
f7b43d0c | 1973 | /* |
7323f0d2 KM |
1974 | * OP_LOCK and OP_LOCKT may return a conflicting lock. |
1975 | * (Special case because it will just skip encoding this | |
1976 | * if it runs out of xdr buffer space, and it is the only | |
1977 | * operation that behaves this way.) | |
f7b43d0c | 1978 | */ |
7323f0d2 | 1979 | if (op->opnum == OP_LOCK || op->opnum == OP_LOCKT) |
f7b43d0c | 1980 | max_reply += NFS4_OPAQUE_LIMIT; |
e372ba60 BF |
1981 | |
1982 | if (op->status) { | |
1983 | argp->opcnt = i+1; | |
1984 | break; | |
1985 | } | |
1da177e4 | 1986 | } |
1091006c BF |
1987 | /* Sessions make the DRC unnecessary: */ |
1988 | if (argp->minorversion) | |
1989 | cachethis = false; | |
b0e35fda | 1990 | svc_reserve(argp->rqstp, max_reply + readbytes); |
1091006c | 1991 | argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; |
1da177e4 | 1992 | |
a5cddc88 | 1993 | if (readcount > 1 || max_reply > PAGE_SIZE - auth_slack) |
779fb0f3 | 1994 | clear_bit(RQ_SPLICE_OK, &argp->rqstp->rq_flags); |
b0e35fda | 1995 | |
1da177e4 LT |
1996 | DECODE_TAIL; |
1997 | } | |
1da177e4 | 1998 | |
b8800921 N |
1999 | static __be32 *encode_change(__be32 *p, struct kstat *stat, struct inode *inode, |
2000 | struct svc_export *exp) | |
c654b8a9 | 2001 | { |
b8800921 N |
2002 | if (exp->ex_flags & NFSEXP_V4ROOT) { |
2003 | *p++ = cpu_to_be32(convert_to_wallclock(exp->cd->flush_time)); | |
2004 | *p++ = 0; | |
2005 | } else if (IS_I_VERSION(inode)) { | |
39ca1bf6 | 2006 | p = xdr_encode_hyper(p, nfsd4_change_attribute(stat, inode)); |
c654b8a9 | 2007 | } else { |
d05d5744 BF |
2008 | *p++ = cpu_to_be32(stat->ctime.tv_sec); |
2009 | *p++ = cpu_to_be32(stat->ctime.tv_nsec); | |
c654b8a9 | 2010 | } |
d05d5744 | 2011 | return p; |
c654b8a9 BF |
2012 | } |
2013 | ||
16945141 BF |
2014 | /* |
2015 | * ctime (in NFSv4, time_metadata) is not writeable, and the client | |
2016 | * doesn't really care what resolution could theoretically be stored by | |
2017 | * the filesystem. | |
2018 | * | |
2019 | * The client cares how close together changes can be while still | |
2020 | * guaranteeing ctime changes. For most filesystems (which have | |
2021 | * timestamps with nanosecond fields) that is limited by the resolution | |
2022 | * of the time returned from current_time() (which I'm assuming to be | |
2023 | * 1/HZ). | |
2024 | */ | |
2025 | static __be32 *encode_time_delta(__be32 *p, struct inode *inode) | |
2026 | { | |
2027 | struct timespec ts; | |
2028 | u32 ns; | |
2029 | ||
2030 | ns = max_t(u32, NSEC_PER_SEC/HZ, inode->i_sb->s_time_gran); | |
2031 | ts = ns_to_timespec(ns); | |
2032 | ||
2033 | p = xdr_encode_hyper(p, ts.tv_sec); | |
2034 | *p++ = cpu_to_be32(ts.tv_nsec); | |
2035 | ||
2036 | return p; | |
2037 | } | |
2038 | ||
d05d5744 | 2039 | static __be32 *encode_cinfo(__be32 *p, struct nfsd4_change_info *c) |
c654b8a9 | 2040 | { |
d05d5744 | 2041 | *p++ = cpu_to_be32(c->atomic); |
c654b8a9 | 2042 | if (c->change_supported) { |
d05d5744 BF |
2043 | p = xdr_encode_hyper(p, c->before_change); |
2044 | p = xdr_encode_hyper(p, c->after_change); | |
c654b8a9 | 2045 | } else { |
d05d5744 BF |
2046 | *p++ = cpu_to_be32(c->before_ctime_sec); |
2047 | *p++ = cpu_to_be32(c->before_ctime_nsec); | |
2048 | *p++ = cpu_to_be32(c->after_ctime_sec); | |
2049 | *p++ = cpu_to_be32(c->after_ctime_nsec); | |
c654b8a9 | 2050 | } |
d05d5744 | 2051 | return p; |
c654b8a9 | 2052 | } |
1da177e4 | 2053 | |
81c3f413 | 2054 | /* Encode as an array of strings the string given with components |
e7a0444a | 2055 | * separated @sep, escaped with esc_enter and esc_exit. |
81c3f413 | 2056 | */ |
ddd1ea56 BF |
2057 | static __be32 nfsd4_encode_components_esc(struct xdr_stream *xdr, char sep, |
2058 | char *components, char esc_enter, | |
2059 | char esc_exit) | |
81c3f413 | 2060 | { |
ddd1ea56 | 2061 | __be32 *p; |
082d4bd7 BF |
2062 | __be32 pathlen; |
2063 | int pathlen_offset; | |
81c3f413 | 2064 | int strlen, count=0; |
e7a0444a | 2065 | char *str, *end, *next; |
81c3f413 BF |
2066 | |
2067 | dprintk("nfsd4_encode_components(%s)\n", components); | |
082d4bd7 BF |
2068 | |
2069 | pathlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
2070 | p = xdr_reserve_space(xdr, 4); |
2071 | if (!p) | |
81c3f413 | 2072 | return nfserr_resource; |
082d4bd7 BF |
2073 | p++; /* We will fill this in with @count later */ |
2074 | ||
81c3f413 BF |
2075 | end = str = components; |
2076 | while (*end) { | |
e7a0444a WAA |
2077 | bool found_esc = false; |
2078 | ||
2079 | /* try to parse as esc_start, ..., esc_end, sep */ | |
2080 | if (*str == esc_enter) { | |
2081 | for (; *end && (*end != esc_exit); end++) | |
2082 | /* find esc_exit or end of string */; | |
2083 | next = end + 1; | |
2084 | if (*end && (!*next || *next == sep)) { | |
2085 | str++; | |
2086 | found_esc = true; | |
2087 | } | |
2088 | } | |
2089 | ||
2090 | if (!found_esc) | |
2091 | for (; *end && (*end != sep); end++) | |
2092 | /* find sep or end of string */; | |
2093 | ||
81c3f413 BF |
2094 | strlen = end - str; |
2095 | if (strlen) { | |
ddd1ea56 BF |
2096 | p = xdr_reserve_space(xdr, strlen + 4); |
2097 | if (!p) | |
81c3f413 | 2098 | return nfserr_resource; |
0c0c267b | 2099 | p = xdr_encode_opaque(p, str, strlen); |
81c3f413 BF |
2100 | count++; |
2101 | } | |
2102 | else | |
2103 | end++; | |
5a64e569 BC |
2104 | if (found_esc) |
2105 | end = next; | |
2106 | ||
81c3f413 BF |
2107 | str = end; |
2108 | } | |
bf7491f1 | 2109 | pathlen = htonl(count); |
082d4bd7 | 2110 | write_bytes_to_xdr_buf(xdr->buf, pathlen_offset, &pathlen, 4); |
81c3f413 BF |
2111 | return 0; |
2112 | } | |
2113 | ||
e7a0444a WAA |
2114 | /* Encode as an array of strings the string given with components |
2115 | * separated @sep. | |
2116 | */ | |
ddd1ea56 BF |
2117 | static __be32 nfsd4_encode_components(struct xdr_stream *xdr, char sep, |
2118 | char *components) | |
e7a0444a | 2119 | { |
ddd1ea56 | 2120 | return nfsd4_encode_components_esc(xdr, sep, components, 0, 0); |
e7a0444a WAA |
2121 | } |
2122 | ||
81c3f413 BF |
2123 | /* |
2124 | * encode a location element of a fs_locations structure | |
2125 | */ | |
ddd1ea56 BF |
2126 | static __be32 nfsd4_encode_fs_location4(struct xdr_stream *xdr, |
2127 | struct nfsd4_fs_location *location) | |
81c3f413 | 2128 | { |
b37ad28b | 2129 | __be32 status; |
81c3f413 | 2130 | |
ddd1ea56 | 2131 | status = nfsd4_encode_components_esc(xdr, ':', location->hosts, |
e7a0444a | 2132 | '[', ']'); |
81c3f413 BF |
2133 | if (status) |
2134 | return status; | |
ddd1ea56 | 2135 | status = nfsd4_encode_components(xdr, '/', location->path); |
81c3f413 BF |
2136 | if (status) |
2137 | return status; | |
81c3f413 BF |
2138 | return 0; |
2139 | } | |
2140 | ||
2141 | /* | |
ed748aac | 2142 | * Encode a path in RFC3530 'pathname4' format |
81c3f413 | 2143 | */ |
ddd1ea56 BF |
2144 | static __be32 nfsd4_encode_path(struct xdr_stream *xdr, |
2145 | const struct path *root, | |
2146 | const struct path *path) | |
81c3f413 | 2147 | { |
301f0268 | 2148 | struct path cur = *path; |
ddd1ea56 | 2149 | __be32 *p; |
ed748aac TM |
2150 | struct dentry **components = NULL; |
2151 | unsigned int ncomponents = 0; | |
2152 | __be32 err = nfserr_jukebox; | |
81c3f413 | 2153 | |
ed748aac | 2154 | dprintk("nfsd4_encode_components("); |
81c3f413 | 2155 | |
ed748aac TM |
2156 | path_get(&cur); |
2157 | /* First walk the path up to the nfsd root, and store the | |
2158 | * dentries/path components in an array. | |
2159 | */ | |
2160 | for (;;) { | |
b77a4b2e | 2161 | if (path_equal(&cur, root)) |
ed748aac TM |
2162 | break; |
2163 | if (cur.dentry == cur.mnt->mnt_root) { | |
2164 | if (follow_up(&cur)) | |
2165 | continue; | |
2166 | goto out_free; | |
2167 | } | |
2168 | if ((ncomponents & 15) == 0) { | |
2169 | struct dentry **new; | |
2170 | new = krealloc(components, | |
2171 | sizeof(*new) * (ncomponents + 16), | |
2172 | GFP_KERNEL); | |
2173 | if (!new) | |
2174 | goto out_free; | |
2175 | components = new; | |
2176 | } | |
2177 | components[ncomponents++] = cur.dentry; | |
2178 | cur.dentry = dget_parent(cur.dentry); | |
2179 | } | |
ddd1ea56 BF |
2180 | err = nfserr_resource; |
2181 | p = xdr_reserve_space(xdr, 4); | |
2182 | if (!p) | |
ed748aac | 2183 | goto out_free; |
c373b0a4 | 2184 | *p++ = cpu_to_be32(ncomponents); |
ed748aac TM |
2185 | |
2186 | while (ncomponents) { | |
2187 | struct dentry *dentry = components[ncomponents - 1]; | |
301f0268 | 2188 | unsigned int len; |
ed748aac | 2189 | |
301f0268 AV |
2190 | spin_lock(&dentry->d_lock); |
2191 | len = dentry->d_name.len; | |
ddd1ea56 BF |
2192 | p = xdr_reserve_space(xdr, len + 4); |
2193 | if (!p) { | |
301f0268 | 2194 | spin_unlock(&dentry->d_lock); |
ed748aac | 2195 | goto out_free; |
301f0268 | 2196 | } |
0c0c267b | 2197 | p = xdr_encode_opaque(p, dentry->d_name.name, len); |
a455589f | 2198 | dprintk("/%pd", dentry); |
301f0268 | 2199 | spin_unlock(&dentry->d_lock); |
ed748aac TM |
2200 | dput(dentry); |
2201 | ncomponents--; | |
81c3f413 | 2202 | } |
ed748aac | 2203 | |
ed748aac TM |
2204 | err = 0; |
2205 | out_free: | |
2206 | dprintk(")\n"); | |
2207 | while (ncomponents) | |
2208 | dput(components[--ncomponents]); | |
2209 | kfree(components); | |
2210 | path_put(&cur); | |
2211 | return err; | |
2212 | } | |
2213 | ||
ddd1ea56 BF |
2214 | static __be32 nfsd4_encode_fsloc_fsroot(struct xdr_stream *xdr, |
2215 | struct svc_rqst *rqstp, const struct path *path) | |
ed748aac TM |
2216 | { |
2217 | struct svc_export *exp_ps; | |
2218 | __be32 res; | |
2219 | ||
2220 | exp_ps = rqst_find_fsidzero_export(rqstp); | |
2221 | if (IS_ERR(exp_ps)) | |
2222 | return nfserrno(PTR_ERR(exp_ps)); | |
ddd1ea56 | 2223 | res = nfsd4_encode_path(xdr, &exp_ps->ex_path, path); |
ed748aac TM |
2224 | exp_put(exp_ps); |
2225 | return res; | |
81c3f413 BF |
2226 | } |
2227 | ||
2228 | /* | |
2229 | * encode a fs_locations structure | |
2230 | */ | |
ddd1ea56 BF |
2231 | static __be32 nfsd4_encode_fs_locations(struct xdr_stream *xdr, |
2232 | struct svc_rqst *rqstp, struct svc_export *exp) | |
81c3f413 | 2233 | { |
b37ad28b | 2234 | __be32 status; |
cc45f017 | 2235 | int i; |
ddd1ea56 | 2236 | __be32 *p; |
81c3f413 | 2237 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
81c3f413 | 2238 | |
ddd1ea56 | 2239 | status = nfsd4_encode_fsloc_fsroot(xdr, rqstp, &exp->ex_path); |
81c3f413 BF |
2240 | if (status) |
2241 | return status; | |
ddd1ea56 BF |
2242 | p = xdr_reserve_space(xdr, 4); |
2243 | if (!p) | |
81c3f413 | 2244 | return nfserr_resource; |
c373b0a4 | 2245 | *p++ = cpu_to_be32(fslocs->locations_count); |
81c3f413 | 2246 | for (i=0; i<fslocs->locations_count; i++) { |
ddd1ea56 | 2247 | status = nfsd4_encode_fs_location4(xdr, &fslocs->locations[i]); |
81c3f413 BF |
2248 | if (status) |
2249 | return status; | |
2250 | } | |
81c3f413 BF |
2251 | return 0; |
2252 | } | |
1da177e4 | 2253 | |
3d2544b1 BF |
2254 | static u32 nfs4_file_type(umode_t mode) |
2255 | { | |
2256 | switch (mode & S_IFMT) { | |
2257 | case S_IFIFO: return NF4FIFO; | |
2258 | case S_IFCHR: return NF4CHR; | |
2259 | case S_IFDIR: return NF4DIR; | |
2260 | case S_IFBLK: return NF4BLK; | |
2261 | case S_IFLNK: return NF4LNK; | |
2262 | case S_IFREG: return NF4REG; | |
2263 | case S_IFSOCK: return NF4SOCK; | |
2264 | default: return NF4BAD; | |
2265 | }; | |
2266 | } | |
1da177e4 | 2267 | |
b37ad28b | 2268 | static inline __be32 |
ddd1ea56 BF |
2269 | nfsd4_encode_aclname(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2270 | struct nfs4_ace *ace) | |
1da177e4 | 2271 | { |
3554116d | 2272 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ddd1ea56 | 2273 | return nfs4_acl_write_who(xdr, ace->whotype); |
3554116d | 2274 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
ddd1ea56 | 2275 | return nfsd4_encode_group(xdr, rqstp, ace->who_gid); |
3554116d | 2276 | else |
ddd1ea56 | 2277 | return nfsd4_encode_user(xdr, rqstp, ace->who_uid); |
1da177e4 LT |
2278 | } |
2279 | ||
6896f15a | 2280 | static inline __be32 |
8a4c3926 | 2281 | nfsd4_encode_layout_types(struct xdr_stream *xdr, u32 layout_types) |
6896f15a | 2282 | { |
8a4c3926 JL |
2283 | __be32 *p; |
2284 | unsigned long i = hweight_long(layout_types); | |
6896f15a | 2285 | |
8a4c3926 JL |
2286 | p = xdr_reserve_space(xdr, 4 + 4 * i); |
2287 | if (!p) | |
2288 | return nfserr_resource; | |
2289 | ||
2290 | *p++ = cpu_to_be32(i); | |
2291 | ||
2292 | for (i = LAYOUT_NFSV4_1_FILES; i < LAYOUT_TYPE_MAX; ++i) | |
2293 | if (layout_types & (1 << i)) | |
2294 | *p++ = cpu_to_be32(i); | |
6896f15a KM |
2295 | |
2296 | return 0; | |
2297 | } | |
2298 | ||
42ca0993 BF |
2299 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
2300 | FATTR4_WORD0_RDATTR_ERROR) | |
2301 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
c2227a39 | 2302 | #define WORD2_ABSENT_FS_ATTRS 0 |
42ca0993 | 2303 | |
18032ca0 DQ |
2304 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
2305 | static inline __be32 | |
ddd1ea56 BF |
2306 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2307 | void *context, int len) | |
18032ca0 | 2308 | { |
ddd1ea56 | 2309 | __be32 *p; |
18032ca0 | 2310 | |
ddd1ea56 BF |
2311 | p = xdr_reserve_space(xdr, len + 4 + 4 + 4); |
2312 | if (!p) | |
18032ca0 DQ |
2313 | return nfserr_resource; |
2314 | ||
2315 | /* | |
2316 | * For now we use a 0 here to indicate the null translation; in | |
2317 | * the future we may place a call to translation code here. | |
2318 | */ | |
c373b0a4 BF |
2319 | *p++ = cpu_to_be32(0); /* lfs */ |
2320 | *p++ = cpu_to_be32(0); /* pi */ | |
18032ca0 | 2321 | p = xdr_encode_opaque(p, context, len); |
18032ca0 DQ |
2322 | return 0; |
2323 | } | |
2324 | #else | |
2325 | static inline __be32 | |
ddd1ea56 BF |
2326 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2327 | void *context, int len) | |
18032ca0 DQ |
2328 | { return 0; } |
2329 | #endif | |
2330 | ||
c2227a39 | 2331 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *bmval2, u32 *rdattr_err) |
42ca0993 BF |
2332 | { |
2333 | /* As per referral draft: */ | |
2334 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
2335 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
2336 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
2337 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
2338 | *rdattr_err = NFSERR_MOVED; | |
2339 | else | |
2340 | return nfserr_moved; | |
2341 | } | |
2342 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
2343 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
c2227a39 | 2344 | *bmval2 &= WORD2_ABSENT_FS_ATTRS; |
42ca0993 BF |
2345 | return 0; |
2346 | } | |
1da177e4 | 2347 | |
ae7095a7 BF |
2348 | |
2349 | static int get_parent_attributes(struct svc_export *exp, struct kstat *stat) | |
2350 | { | |
2351 | struct path path = exp->ex_path; | |
2352 | int err; | |
2353 | ||
2354 | path_get(&path); | |
2355 | while (follow_up(&path)) { | |
2356 | if (path.dentry != path.mnt->mnt_root) | |
2357 | break; | |
2358 | } | |
a528d35e | 2359 | err = vfs_getattr(&path, stat, STATX_BASIC_STATS, AT_STATX_SYNC_AS_STAT); |
ae7095a7 BF |
2360 | path_put(&path); |
2361 | return err; | |
2362 | } | |
2363 | ||
75976de6 KM |
2364 | static __be32 |
2365 | nfsd4_encode_bitmap(struct xdr_stream *xdr, u32 bmval0, u32 bmval1, u32 bmval2) | |
2366 | { | |
2367 | __be32 *p; | |
2368 | ||
2369 | if (bmval2) { | |
2370 | p = xdr_reserve_space(xdr, 16); | |
2371 | if (!p) | |
2372 | goto out_resource; | |
2373 | *p++ = cpu_to_be32(3); | |
2374 | *p++ = cpu_to_be32(bmval0); | |
2375 | *p++ = cpu_to_be32(bmval1); | |
2376 | *p++ = cpu_to_be32(bmval2); | |
2377 | } else if (bmval1) { | |
2378 | p = xdr_reserve_space(xdr, 12); | |
2379 | if (!p) | |
2380 | goto out_resource; | |
2381 | *p++ = cpu_to_be32(2); | |
2382 | *p++ = cpu_to_be32(bmval0); | |
2383 | *p++ = cpu_to_be32(bmval1); | |
2384 | } else { | |
2385 | p = xdr_reserve_space(xdr, 8); | |
2386 | if (!p) | |
2387 | goto out_resource; | |
2388 | *p++ = cpu_to_be32(1); | |
2389 | *p++ = cpu_to_be32(bmval0); | |
2390 | } | |
2391 | ||
2392 | return 0; | |
2393 | out_resource: | |
2394 | return nfserr_resource; | |
2395 | } | |
2396 | ||
1da177e4 LT |
2397 | /* |
2398 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
2399 | * ourselves. | |
1da177e4 | 2400 | */ |
da2ebce6 | 2401 | static __be32 |
d5184658 BF |
2402 | nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp, |
2403 | struct svc_export *exp, | |
2404 | struct dentry *dentry, u32 *bmval, | |
406a7ea9 | 2405 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
2406 | { |
2407 | u32 bmval0 = bmval[0]; | |
2408 | u32 bmval1 = bmval[1]; | |
7e705706 | 2409 | u32 bmval2 = bmval[2]; |
1da177e4 | 2410 | struct kstat stat; |
d50e6136 | 2411 | struct svc_fh *tempfh = NULL; |
1da177e4 | 2412 | struct kstatfs statfs; |
ddd1ea56 | 2413 | __be32 *p; |
1fcea5b2 | 2414 | int starting_len = xdr->buf->len; |
082d4bd7 BF |
2415 | int attrlen_offset; |
2416 | __be32 attrlen; | |
1da177e4 LT |
2417 | u32 dummy; |
2418 | u64 dummy64; | |
42ca0993 | 2419 | u32 rdattr_err = 0; |
b37ad28b | 2420 | __be32 status; |
b8dd7b9a | 2421 | int err; |
1da177e4 | 2422 | struct nfs4_acl *acl = NULL; |
18032ca0 DQ |
2423 | void *context = NULL; |
2424 | int contextlen; | |
2425 | bool contextsupport = false; | |
7e705706 AA |
2426 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
2427 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
2428 | struct path path = { |
2429 | .mnt = exp->ex_path.mnt, | |
2430 | .dentry = dentry, | |
2431 | }; | |
3d733711 | 2432 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
1da177e4 LT |
2433 | |
2434 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
916d2d84 | 2435 | BUG_ON(!nfsd_attrs_supported(minorversion, bmval)); |
1da177e4 | 2436 | |
42ca0993 | 2437 | if (exp->ex_fslocs.migrated) { |
c2227a39 | 2438 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &bmval2, &rdattr_err); |
42ca0993 BF |
2439 | if (status) |
2440 | goto out; | |
2441 | } | |
2442 | ||
a528d35e | 2443 | err = vfs_getattr(&path, &stat, STATX_BASIC_STATS, AT_STATX_SYNC_AS_STAT); |
b8dd7b9a | 2444 | if (err) |
1da177e4 | 2445 | goto out_nfserr; |
12337901 CH |
2446 | if ((bmval0 & (FATTR4_WORD0_FILES_AVAIL | FATTR4_WORD0_FILES_FREE | |
2447 | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
2448 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
2449 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 2450 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 2451 | if (err) |
1da177e4 LT |
2452 | goto out_nfserr; |
2453 | } | |
2454 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
d50e6136 BF |
2455 | tempfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); |
2456 | status = nfserr_jukebox; | |
2457 | if (!tempfh) | |
2458 | goto out; | |
2459 | fh_init(tempfh, NFS4_FHSIZE); | |
2460 | status = fh_compose(tempfh, exp, dentry, NULL); | |
1da177e4 LT |
2461 | if (status) |
2462 | goto out; | |
d50e6136 | 2463 | fhp = tempfh; |
1da177e4 | 2464 | } |
0c9d65e7 | 2465 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 2466 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
0c9d65e7 AG |
2467 | if (err == -EOPNOTSUPP) |
2468 | bmval0 &= ~FATTR4_WORD0_ACL; | |
2469 | else if (err == -EINVAL) { | |
2470 | status = nfserr_attrnotsupp; | |
2471 | goto out; | |
2472 | } else if (err != 0) | |
2473 | goto out_nfserr; | |
1da177e4 | 2474 | } |
1da177e4 | 2475 | |
18032ca0 | 2476 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
c2227a39 KM |
2477 | if ((bmval2 & FATTR4_WORD2_SECURITY_LABEL) || |
2478 | bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
32ddd944 BF |
2479 | if (exp->ex_flags & NFSEXP_SECURITY_LABEL) |
2480 | err = security_inode_getsecctx(d_inode(dentry), | |
18032ca0 | 2481 | &context, &contextlen); |
32ddd944 BF |
2482 | else |
2483 | err = -EOPNOTSUPP; | |
18032ca0 DQ |
2484 | contextsupport = (err == 0); |
2485 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { | |
2486 | if (err == -EOPNOTSUPP) | |
2487 | bmval2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2488 | else if (err) | |
2489 | goto out_nfserr; | |
2490 | } | |
2491 | } | |
2492 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ | |
2493 | ||
75976de6 KM |
2494 | status = nfsd4_encode_bitmap(xdr, bmval0, bmval1, bmval2); |
2495 | if (status) | |
2496 | goto out; | |
082d4bd7 BF |
2497 | |
2498 | attrlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
2499 | p = xdr_reserve_space(xdr, 4); |
2500 | if (!p) | |
2501 | goto out_resource; | |
082d4bd7 | 2502 | p++; /* to be backfilled later */ |
1da177e4 LT |
2503 | |
2504 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
dcd20869 BF |
2505 | u32 supp[3]; |
2506 | ||
2507 | memcpy(supp, nfsd_suppattrs[minorversion], sizeof(supp)); | |
7e705706 | 2508 | |
0c9d65e7 | 2509 | if (!IS_POSIXACL(dentry->d_inode)) |
916d2d84 | 2510 | supp[0] &= ~FATTR4_WORD0_ACL; |
18032ca0 | 2511 | if (!contextsupport) |
916d2d84 BF |
2512 | supp[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
2513 | if (!supp[2]) { | |
ddd1ea56 BF |
2514 | p = xdr_reserve_space(xdr, 12); |
2515 | if (!p) | |
2b44f1ba | 2516 | goto out_resource; |
c373b0a4 | 2517 | *p++ = cpu_to_be32(2); |
916d2d84 BF |
2518 | *p++ = cpu_to_be32(supp[0]); |
2519 | *p++ = cpu_to_be32(supp[1]); | |
7e705706 | 2520 | } else { |
ddd1ea56 BF |
2521 | p = xdr_reserve_space(xdr, 16); |
2522 | if (!p) | |
2b44f1ba | 2523 | goto out_resource; |
c373b0a4 | 2524 | *p++ = cpu_to_be32(3); |
916d2d84 BF |
2525 | *p++ = cpu_to_be32(supp[0]); |
2526 | *p++ = cpu_to_be32(supp[1]); | |
2527 | *p++ = cpu_to_be32(supp[2]); | |
7e705706 | 2528 | } |
1da177e4 LT |
2529 | } |
2530 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
ddd1ea56 BF |
2531 | p = xdr_reserve_space(xdr, 4); |
2532 | if (!p) | |
1da177e4 | 2533 | goto out_resource; |
3d2544b1 | 2534 | dummy = nfs4_file_type(stat.mode); |
6b6d8137 BF |
2535 | if (dummy == NF4BAD) { |
2536 | status = nfserr_serverfault; | |
2537 | goto out; | |
2538 | } | |
c373b0a4 | 2539 | *p++ = cpu_to_be32(dummy); |
1da177e4 LT |
2540 | } |
2541 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
ddd1ea56 BF |
2542 | p = xdr_reserve_space(xdr, 4); |
2543 | if (!p) | |
1da177e4 | 2544 | goto out_resource; |
49640001 | 2545 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
c373b0a4 | 2546 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT); |
49640001 | 2547 | else |
c373b0a4 BF |
2548 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT| |
2549 | NFS4_FH_VOL_RENAME); | |
1da177e4 LT |
2550 | } |
2551 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
ddd1ea56 BF |
2552 | p = xdr_reserve_space(xdr, 8); |
2553 | if (!p) | |
1da177e4 | 2554 | goto out_resource; |
b8800921 | 2555 | p = encode_change(p, &stat, d_inode(dentry), exp); |
1da177e4 LT |
2556 | } |
2557 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
ddd1ea56 BF |
2558 | p = xdr_reserve_space(xdr, 8); |
2559 | if (!p) | |
1da177e4 | 2560 | goto out_resource; |
b64c7f3b | 2561 | p = xdr_encode_hyper(p, stat.size); |
1da177e4 LT |
2562 | } |
2563 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
ddd1ea56 BF |
2564 | p = xdr_reserve_space(xdr, 4); |
2565 | if (!p) | |
1da177e4 | 2566 | goto out_resource; |
c373b0a4 | 2567 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2568 | } |
2569 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
ddd1ea56 BF |
2570 | p = xdr_reserve_space(xdr, 4); |
2571 | if (!p) | |
1da177e4 | 2572 | goto out_resource; |
c373b0a4 | 2573 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2574 | } |
2575 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
ddd1ea56 BF |
2576 | p = xdr_reserve_space(xdr, 4); |
2577 | if (!p) | |
1da177e4 | 2578 | goto out_resource; |
c373b0a4 | 2579 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2580 | } |
2581 | if (bmval0 & FATTR4_WORD0_FSID) { | |
ddd1ea56 BF |
2582 | p = xdr_reserve_space(xdr, 16); |
2583 | if (!p) | |
1da177e4 | 2584 | goto out_resource; |
42ca0993 | 2585 | if (exp->ex_fslocs.migrated) { |
b64c7f3b BF |
2586 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MAJOR); |
2587 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
2588 | } else switch(fsid_source(fhp)) { |
2589 | case FSIDSOURCE_FSID: | |
b64c7f3b BF |
2590 | p = xdr_encode_hyper(p, (u64)exp->ex_fsid); |
2591 | p = xdr_encode_hyper(p, (u64)0); | |
af6a4e28 N |
2592 | break; |
2593 | case FSIDSOURCE_DEV: | |
c373b0a4 BF |
2594 | *p++ = cpu_to_be32(0); |
2595 | *p++ = cpu_to_be32(MAJOR(stat.dev)); | |
2596 | *p++ = cpu_to_be32(0); | |
2597 | *p++ = cpu_to_be32(MINOR(stat.dev)); | |
af6a4e28 N |
2598 | break; |
2599 | case FSIDSOURCE_UUID: | |
94eb3689 KM |
2600 | p = xdr_encode_opaque_fixed(p, exp->ex_uuid, |
2601 | EX_UUID_LEN); | |
af6a4e28 | 2602 | break; |
1da177e4 LT |
2603 | } |
2604 | } | |
2605 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
ddd1ea56 BF |
2606 | p = xdr_reserve_space(xdr, 4); |
2607 | if (!p) | |
1da177e4 | 2608 | goto out_resource; |
c373b0a4 | 2609 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2610 | } |
2611 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
ddd1ea56 BF |
2612 | p = xdr_reserve_space(xdr, 4); |
2613 | if (!p) | |
1da177e4 | 2614 | goto out_resource; |
c373b0a4 | 2615 | *p++ = cpu_to_be32(nn->nfsd4_lease); |
1da177e4 LT |
2616 | } |
2617 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
ddd1ea56 BF |
2618 | p = xdr_reserve_space(xdr, 4); |
2619 | if (!p) | |
1da177e4 | 2620 | goto out_resource; |
c373b0a4 | 2621 | *p++ = cpu_to_be32(rdattr_err); |
1da177e4 LT |
2622 | } |
2623 | if (bmval0 & FATTR4_WORD0_ACL) { | |
2624 | struct nfs4_ace *ace; | |
1da177e4 LT |
2625 | |
2626 | if (acl == NULL) { | |
ddd1ea56 BF |
2627 | p = xdr_reserve_space(xdr, 4); |
2628 | if (!p) | |
1da177e4 LT |
2629 | goto out_resource; |
2630 | ||
c373b0a4 | 2631 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2632 | goto out_acl; |
2633 | } | |
ddd1ea56 BF |
2634 | p = xdr_reserve_space(xdr, 4); |
2635 | if (!p) | |
1da177e4 | 2636 | goto out_resource; |
c373b0a4 | 2637 | *p++ = cpu_to_be32(acl->naces); |
1da177e4 | 2638 | |
28e05dd8 | 2639 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
ddd1ea56 BF |
2640 | p = xdr_reserve_space(xdr, 4*3); |
2641 | if (!p) | |
1da177e4 | 2642 | goto out_resource; |
c373b0a4 BF |
2643 | *p++ = cpu_to_be32(ace->type); |
2644 | *p++ = cpu_to_be32(ace->flag); | |
2645 | *p++ = cpu_to_be32(ace->access_mask & | |
2646 | NFS4_ACE_MASK_ALL); | |
ddd1ea56 | 2647 | status = nfsd4_encode_aclname(xdr, rqstp, ace); |
1da177e4 LT |
2648 | if (status) |
2649 | goto out; | |
2650 | } | |
2651 | } | |
2652 | out_acl: | |
2653 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
ddd1ea56 BF |
2654 | p = xdr_reserve_space(xdr, 4); |
2655 | if (!p) | |
1da177e4 | 2656 | goto out_resource; |
0c9d65e7 | 2657 | *p++ = cpu_to_be32(IS_POSIXACL(dentry->d_inode) ? |
1da177e4 LT |
2658 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); |
2659 | } | |
2660 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
ddd1ea56 BF |
2661 | p = xdr_reserve_space(xdr, 4); |
2662 | if (!p) | |
1da177e4 | 2663 | goto out_resource; |
c373b0a4 | 2664 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2665 | } |
2666 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
ddd1ea56 BF |
2667 | p = xdr_reserve_space(xdr, 4); |
2668 | if (!p) | |
1da177e4 | 2669 | goto out_resource; |
c373b0a4 | 2670 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2671 | } |
2672 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
ddd1ea56 BF |
2673 | p = xdr_reserve_space(xdr, 4); |
2674 | if (!p) | |
1da177e4 | 2675 | goto out_resource; |
c373b0a4 | 2676 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2677 | } |
2678 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
ddd1ea56 BF |
2679 | p = xdr_reserve_space(xdr, 4); |
2680 | if (!p) | |
1da177e4 | 2681 | goto out_resource; |
c373b0a4 | 2682 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2683 | } |
2684 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
ddd1ea56 BF |
2685 | p = xdr_reserve_space(xdr, fhp->fh_handle.fh_size + 4); |
2686 | if (!p) | |
1da177e4 | 2687 | goto out_resource; |
0c0c267b BF |
2688 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, |
2689 | fhp->fh_handle.fh_size); | |
1da177e4 LT |
2690 | } |
2691 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
ddd1ea56 BF |
2692 | p = xdr_reserve_space(xdr, 8); |
2693 | if (!p) | |
1da177e4 | 2694 | goto out_resource; |
b64c7f3b | 2695 | p = xdr_encode_hyper(p, stat.ino); |
1da177e4 LT |
2696 | } |
2697 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
ddd1ea56 BF |
2698 | p = xdr_reserve_space(xdr, 8); |
2699 | if (!p) | |
1da177e4 | 2700 | goto out_resource; |
b64c7f3b | 2701 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
2702 | } |
2703 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
ddd1ea56 BF |
2704 | p = xdr_reserve_space(xdr, 8); |
2705 | if (!p) | |
1da177e4 | 2706 | goto out_resource; |
b64c7f3b | 2707 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
2708 | } |
2709 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
ddd1ea56 BF |
2710 | p = xdr_reserve_space(xdr, 8); |
2711 | if (!p) | |
1da177e4 | 2712 | goto out_resource; |
b64c7f3b | 2713 | p = xdr_encode_hyper(p, (u64) statfs.f_files); |
1da177e4 | 2714 | } |
81c3f413 | 2715 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
ddd1ea56 | 2716 | status = nfsd4_encode_fs_locations(xdr, rqstp, exp); |
81c3f413 BF |
2717 | if (status) |
2718 | goto out; | |
2719 | } | |
1da177e4 | 2720 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
ddd1ea56 BF |
2721 | p = xdr_reserve_space(xdr, 4); |
2722 | if (!p) | |
1da177e4 | 2723 | goto out_resource; |
c373b0a4 | 2724 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2725 | } |
2726 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
ddd1ea56 BF |
2727 | p = xdr_reserve_space(xdr, 8); |
2728 | if (!p) | |
1da177e4 | 2729 | goto out_resource; |
b64c7f3b | 2730 | p = xdr_encode_hyper(p, exp->ex_path.mnt->mnt_sb->s_maxbytes); |
1da177e4 LT |
2731 | } |
2732 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
ddd1ea56 BF |
2733 | p = xdr_reserve_space(xdr, 4); |
2734 | if (!p) | |
1da177e4 | 2735 | goto out_resource; |
c373b0a4 | 2736 | *p++ = cpu_to_be32(255); |
1da177e4 LT |
2737 | } |
2738 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
ddd1ea56 BF |
2739 | p = xdr_reserve_space(xdr, 4); |
2740 | if (!p) | |
1da177e4 | 2741 | goto out_resource; |
c373b0a4 | 2742 | *p++ = cpu_to_be32(statfs.f_namelen); |
1da177e4 LT |
2743 | } |
2744 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
ddd1ea56 BF |
2745 | p = xdr_reserve_space(xdr, 8); |
2746 | if (!p) | |
1da177e4 | 2747 | goto out_resource; |
b64c7f3b | 2748 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2749 | } |
2750 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
ddd1ea56 BF |
2751 | p = xdr_reserve_space(xdr, 8); |
2752 | if (!p) | |
1da177e4 | 2753 | goto out_resource; |
b64c7f3b | 2754 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2755 | } |
2756 | if (bmval1 & FATTR4_WORD1_MODE) { | |
ddd1ea56 BF |
2757 | p = xdr_reserve_space(xdr, 4); |
2758 | if (!p) | |
1da177e4 | 2759 | goto out_resource; |
c373b0a4 | 2760 | *p++ = cpu_to_be32(stat.mode & S_IALLUGO); |
1da177e4 LT |
2761 | } |
2762 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
ddd1ea56 BF |
2763 | p = xdr_reserve_space(xdr, 4); |
2764 | if (!p) | |
1da177e4 | 2765 | goto out_resource; |
c373b0a4 | 2766 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2767 | } |
2768 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
ddd1ea56 BF |
2769 | p = xdr_reserve_space(xdr, 4); |
2770 | if (!p) | |
1da177e4 | 2771 | goto out_resource; |
c373b0a4 | 2772 | *p++ = cpu_to_be32(stat.nlink); |
1da177e4 LT |
2773 | } |
2774 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
ddd1ea56 | 2775 | status = nfsd4_encode_user(xdr, rqstp, stat.uid); |
1da177e4 LT |
2776 | if (status) |
2777 | goto out; | |
2778 | } | |
2779 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
ddd1ea56 | 2780 | status = nfsd4_encode_group(xdr, rqstp, stat.gid); |
1da177e4 LT |
2781 | if (status) |
2782 | goto out; | |
2783 | } | |
2784 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
ddd1ea56 BF |
2785 | p = xdr_reserve_space(xdr, 8); |
2786 | if (!p) | |
1da177e4 | 2787 | goto out_resource; |
c373b0a4 BF |
2788 | *p++ = cpu_to_be32((u32) MAJOR(stat.rdev)); |
2789 | *p++ = cpu_to_be32((u32) MINOR(stat.rdev)); | |
1da177e4 LT |
2790 | } |
2791 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
ddd1ea56 BF |
2792 | p = xdr_reserve_space(xdr, 8); |
2793 | if (!p) | |
1da177e4 LT |
2794 | goto out_resource; |
2795 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
b64c7f3b | 2796 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2797 | } |
2798 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
ddd1ea56 BF |
2799 | p = xdr_reserve_space(xdr, 8); |
2800 | if (!p) | |
1da177e4 LT |
2801 | goto out_resource; |
2802 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
b64c7f3b | 2803 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2804 | } |
2805 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
ddd1ea56 BF |
2806 | p = xdr_reserve_space(xdr, 8); |
2807 | if (!p) | |
1da177e4 LT |
2808 | goto out_resource; |
2809 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
b64c7f3b | 2810 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2811 | } |
2812 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
ddd1ea56 BF |
2813 | p = xdr_reserve_space(xdr, 8); |
2814 | if (!p) | |
1da177e4 LT |
2815 | goto out_resource; |
2816 | dummy64 = (u64)stat.blocks << 9; | |
b64c7f3b | 2817 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2818 | } |
2819 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
ddd1ea56 BF |
2820 | p = xdr_reserve_space(xdr, 12); |
2821 | if (!p) | |
1da177e4 | 2822 | goto out_resource; |
b64c7f3b | 2823 | p = xdr_encode_hyper(p, (s64)stat.atime.tv_sec); |
c373b0a4 | 2824 | *p++ = cpu_to_be32(stat.atime.tv_nsec); |
1da177e4 LT |
2825 | } |
2826 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
ddd1ea56 BF |
2827 | p = xdr_reserve_space(xdr, 12); |
2828 | if (!p) | |
1da177e4 | 2829 | goto out_resource; |
16945141 | 2830 | p = encode_time_delta(p, d_inode(dentry)); |
1da177e4 LT |
2831 | } |
2832 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
ddd1ea56 BF |
2833 | p = xdr_reserve_space(xdr, 12); |
2834 | if (!p) | |
1da177e4 | 2835 | goto out_resource; |
b64c7f3b | 2836 | p = xdr_encode_hyper(p, (s64)stat.ctime.tv_sec); |
c373b0a4 | 2837 | *p++ = cpu_to_be32(stat.ctime.tv_nsec); |
1da177e4 LT |
2838 | } |
2839 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
ddd1ea56 BF |
2840 | p = xdr_reserve_space(xdr, 12); |
2841 | if (!p) | |
1da177e4 | 2842 | goto out_resource; |
b64c7f3b | 2843 | p = xdr_encode_hyper(p, (s64)stat.mtime.tv_sec); |
c373b0a4 | 2844 | *p++ = cpu_to_be32(stat.mtime.tv_nsec); |
1da177e4 LT |
2845 | } |
2846 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
0a2050d7 KM |
2847 | struct kstat parent_stat; |
2848 | u64 ino = stat.ino; | |
2849 | ||
ddd1ea56 BF |
2850 | p = xdr_reserve_space(xdr, 8); |
2851 | if (!p) | |
1da177e4 | 2852 | goto out_resource; |
406a7ea9 FF |
2853 | /* |
2854 | * Get parent's attributes if not ignoring crossmount | |
2855 | * and this is the root of a cross-mounted filesystem. | |
2856 | */ | |
2857 | if (ignore_crossmnt == 0 && | |
0a2050d7 KM |
2858 | dentry == exp->ex_path.mnt->mnt_root) { |
2859 | err = get_parent_attributes(exp, &parent_stat); | |
2860 | if (err) | |
2861 | goto out_nfserr; | |
2862 | ino = parent_stat.ino; | |
2863 | } | |
2864 | p = xdr_encode_hyper(p, ino); | |
1da177e4 | 2865 | } |
9cf514cc | 2866 | #ifdef CONFIG_NFSD_PNFS |
6896f15a | 2867 | if (bmval1 & FATTR4_WORD1_FS_LAYOUT_TYPES) { |
8a4c3926 | 2868 | status = nfsd4_encode_layout_types(xdr, exp->ex_layout_types); |
6896f15a KM |
2869 | if (status) |
2870 | goto out; | |
2871 | } | |
2872 | ||
2873 | if (bmval2 & FATTR4_WORD2_LAYOUT_TYPES) { | |
8a4c3926 | 2874 | status = nfsd4_encode_layout_types(xdr, exp->ex_layout_types); |
6896f15a KM |
2875 | if (status) |
2876 | goto out; | |
9cf514cc CH |
2877 | } |
2878 | ||
2879 | if (bmval2 & FATTR4_WORD2_LAYOUT_BLKSIZE) { | |
2880 | p = xdr_reserve_space(xdr, 4); | |
2881 | if (!p) | |
2882 | goto out_resource; | |
2883 | *p++ = cpu_to_be32(stat.blksize); | |
2884 | } | |
2885 | #endif /* CONFIG_NFSD_PNFS */ | |
8c18f205 | 2886 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
b26b78cb TM |
2887 | u32 supp[3]; |
2888 | ||
2889 | memcpy(supp, nfsd_suppattrs[minorversion], sizeof(supp)); | |
2890 | supp[0] &= NFSD_SUPPATTR_EXCLCREAT_WORD0; | |
2891 | supp[1] &= NFSD_SUPPATTR_EXCLCREAT_WORD1; | |
2892 | supp[2] &= NFSD_SUPPATTR_EXCLCREAT_WORD2; | |
2893 | ||
2894 | status = nfsd4_encode_bitmap(xdr, supp[0], supp[1], supp[2]); | |
75976de6 KM |
2895 | if (status) |
2896 | goto out; | |
8c18f205 | 2897 | } |
7e705706 | 2898 | |
a8585763 BF |
2899 | if (bmval2 & FATTR4_WORD2_CHANGE_ATTR_TYPE) { |
2900 | p = xdr_reserve_space(xdr, 4); | |
2901 | if (!p) | |
2902 | goto out_resource; | |
2903 | if (IS_I_VERSION(d_inode(dentry))) | |
2904 | *p++ = cpu_to_be32(NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR); | |
2905 | else | |
2906 | *p++ = cpu_to_be32(NFS4_CHANGE_TYPE_IS_TIME_METADATA); | |
2907 | } | |
2908 | ||
7d580722 KM |
2909 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { |
2910 | status = nfsd4_encode_security_label(xdr, rqstp, context, | |
2911 | contextlen); | |
2912 | if (status) | |
2913 | goto out; | |
2914 | } | |
2915 | ||
082d4bd7 BF |
2916 | attrlen = htonl(xdr->buf->len - attrlen_offset - 4); |
2917 | write_bytes_to_xdr_buf(xdr->buf, attrlen_offset, &attrlen, 4); | |
1da177e4 LT |
2918 | status = nfs_ok; |
2919 | ||
2920 | out: | |
ba4e55bb | 2921 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
18032ca0 DQ |
2922 | if (context) |
2923 | security_release_secctx(context, contextlen); | |
ba4e55bb | 2924 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ |
28e05dd8 | 2925 | kfree(acl); |
18df11d0 | 2926 | if (tempfh) { |
d50e6136 | 2927 | fh_put(tempfh); |
18df11d0 YZ |
2928 | kfree(tempfh); |
2929 | } | |
1fcea5b2 BF |
2930 | if (status) |
2931 | xdr_truncate_encode(xdr, starting_len); | |
1da177e4 LT |
2932 | return status; |
2933 | out_nfserr: | |
b8dd7b9a | 2934 | status = nfserrno(err); |
1da177e4 LT |
2935 | goto out; |
2936 | out_resource: | |
1da177e4 LT |
2937 | status = nfserr_resource; |
2938 | goto out; | |
1da177e4 LT |
2939 | } |
2940 | ||
2825a7f9 BF |
2941 | static void svcxdr_init_encode_from_buffer(struct xdr_stream *xdr, |
2942 | struct xdr_buf *buf, __be32 *p, int bytes) | |
2943 | { | |
2944 | xdr->scratch.iov_len = 0; | |
2945 | memset(buf, 0, sizeof(struct xdr_buf)); | |
2946 | buf->head[0].iov_base = p; | |
2947 | buf->head[0].iov_len = 0; | |
2948 | buf->len = 0; | |
2949 | xdr->buf = buf; | |
2950 | xdr->iov = buf->head; | |
2951 | xdr->p = p; | |
2952 | xdr->end = (void *)p + bytes; | |
2953 | buf->buflen = bytes; | |
2954 | } | |
2955 | ||
d5184658 BF |
2956 | __be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words, |
2957 | struct svc_fh *fhp, struct svc_export *exp, | |
2958 | struct dentry *dentry, u32 *bmval, | |
2959 | struct svc_rqst *rqstp, int ignore_crossmnt) | |
2960 | { | |
2825a7f9 | 2961 | struct xdr_buf dummy; |
d5184658 BF |
2962 | struct xdr_stream xdr; |
2963 | __be32 ret; | |
2964 | ||
2825a7f9 | 2965 | svcxdr_init_encode_from_buffer(&xdr, &dummy, *p, words << 2); |
d5184658 BF |
2966 | ret = nfsd4_encode_fattr(&xdr, fhp, exp, dentry, bmval, rqstp, |
2967 | ignore_crossmnt); | |
2968 | *p = xdr.p; | |
2969 | return ret; | |
2970 | } | |
2971 | ||
c0ce6ec8 BF |
2972 | static inline int attributes_need_mount(u32 *bmval) |
2973 | { | |
2974 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2975 | return 1; | |
2976 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2977 | return 1; | |
2978 | return 0; | |
2979 | } | |
2980 | ||
b37ad28b | 2981 | static __be32 |
561f0ed4 BF |
2982 | nfsd4_encode_dirent_fattr(struct xdr_stream *xdr, struct nfsd4_readdir *cd, |
2983 | const char *name, int namlen) | |
1da177e4 LT |
2984 | { |
2985 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2986 | struct dentry *dentry; | |
b37ad28b | 2987 | __be32 nfserr; |
406a7ea9 | 2988 | int ignore_crossmnt = 0; |
1da177e4 | 2989 | |
bbddca8e | 2990 | dentry = lookup_one_len_unlocked(name, cd->rd_fhp->fh_dentry, namlen); |
1da177e4 LT |
2991 | if (IS_ERR(dentry)) |
2992 | return nfserrno(PTR_ERR(dentry)); | |
2b0143b5 | 2993 | if (d_really_is_negative(dentry)) { |
b2c0cea6 | 2994 | /* |
bbddca8e N |
2995 | * we're not holding the i_mutex here, so there's |
2996 | * a window where this directory entry could have gone | |
2997 | * away. | |
b2c0cea6 BF |
2998 | */ |
2999 | dput(dentry); | |
3000 | return nfserr_noent; | |
3001 | } | |
1da177e4 LT |
3002 | |
3003 | exp_get(exp); | |
406a7ea9 FF |
3004 | /* |
3005 | * In the case of a mountpoint, the client may be asking for | |
3006 | * attributes that are only properties of the underlying filesystem | |
3007 | * as opposed to the cross-mounted file system. In such a case, | |
3008 | * we will not follow the cross mount and will fill the attribtutes | |
3009 | * directly from the mountpoint dentry. | |
3010 | */ | |
3227fa41 | 3011 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
3012 | int err; |
3013 | ||
3227fa41 BF |
3014 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
3015 | && !attributes_need_mount(cd->rd_bmval)) { | |
3016 | ignore_crossmnt = 1; | |
3017 | goto out_encode; | |
3018 | } | |
dcb488a3 AA |
3019 | /* |
3020 | * Why the heck aren't we just using nfsd_lookup?? | |
3021 | * Different "."/".." handling? Something else? | |
3022 | * At least, add a comment here to explain.... | |
3023 | */ | |
021d3a72 BF |
3024 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
3025 | if (err) { | |
3026 | nfserr = nfserrno(err); | |
1da177e4 LT |
3027 | goto out_put; |
3028 | } | |
dcb488a3 AA |
3029 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
3030 | if (nfserr) | |
3031 | goto out_put; | |
1da177e4 LT |
3032 | |
3033 | } | |
3227fa41 | 3034 | out_encode: |
561f0ed4 | 3035 | nfserr = nfsd4_encode_fattr(xdr, NULL, exp, dentry, cd->rd_bmval, |
406a7ea9 | 3036 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
3037 | out_put: |
3038 | dput(dentry); | |
3039 | exp_put(exp); | |
3040 | return nfserr; | |
3041 | } | |
3042 | ||
2ebbc012 | 3043 | static __be32 * |
561f0ed4 | 3044 | nfsd4_encode_rdattr_error(struct xdr_stream *xdr, __be32 nfserr) |
1da177e4 | 3045 | { |
561f0ed4 BF |
3046 | __be32 *p; |
3047 | ||
c3a45617 | 3048 | p = xdr_reserve_space(xdr, 20); |
561f0ed4 | 3049 | if (!p) |
1da177e4 LT |
3050 | return NULL; |
3051 | *p++ = htonl(2); | |
3052 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
3053 | *p++ = htonl(0); /* bmval1 */ | |
3054 | ||
87915c64 | 3055 | *p++ = htonl(4); /* attribute length */ |
1da177e4 | 3056 | *p++ = nfserr; /* no htonl */ |
1da177e4 LT |
3057 | return p; |
3058 | } | |
3059 | ||
3060 | static int | |
a0ad13ef N |
3061 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
3062 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 3063 | { |
a0ad13ef | 3064 | struct readdir_cd *ccd = ccdv; |
1da177e4 | 3065 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
561f0ed4 BF |
3066 | struct xdr_stream *xdr = cd->xdr; |
3067 | int start_offset = xdr->buf->len; | |
3068 | int cookie_offset; | |
aee37764 | 3069 | u32 name_and_cookie; |
561f0ed4 | 3070 | int entry_bytes; |
b37ad28b | 3071 | __be32 nfserr = nfserr_toosmall; |
561f0ed4 BF |
3072 | __be64 wire_offset; |
3073 | __be32 *p; | |
1da177e4 LT |
3074 | |
3075 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
3076 | if (name && isdotent(name, namlen)) { | |
3077 | cd->common.err = nfs_ok; | |
3078 | return 0; | |
3079 | } | |
3080 | ||
561f0ed4 BF |
3081 | if (cd->cookie_offset) { |
3082 | wire_offset = cpu_to_be64(offset); | |
3083 | write_bytes_to_xdr_buf(xdr->buf, cd->cookie_offset, | |
3084 | &wire_offset, 8); | |
3085 | } | |
1da177e4 | 3086 | |
561f0ed4 BF |
3087 | p = xdr_reserve_space(xdr, 4); |
3088 | if (!p) | |
1da177e4 | 3089 | goto fail; |
1da177e4 | 3090 | *p++ = xdr_one; /* mark entry present */ |
561f0ed4 BF |
3091 | cookie_offset = xdr->buf->len; |
3092 | p = xdr_reserve_space(xdr, 3*4 + namlen); | |
3093 | if (!p) | |
3094 | goto fail; | |
1da177e4 LT |
3095 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
3096 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
3097 | ||
561f0ed4 | 3098 | nfserr = nfsd4_encode_dirent_fattr(xdr, cd, name, namlen); |
1da177e4 LT |
3099 | switch (nfserr) { |
3100 | case nfs_ok: | |
1da177e4 LT |
3101 | break; |
3102 | case nfserr_resource: | |
3103 | nfserr = nfserr_toosmall; | |
3104 | goto fail; | |
b2c0cea6 | 3105 | case nfserr_noent: |
f41c5ad2 | 3106 | xdr_truncate_encode(xdr, start_offset); |
b2c0cea6 | 3107 | goto skip_entry; |
1da177e4 LT |
3108 | default: |
3109 | /* | |
3110 | * If the client requested the RDATTR_ERROR attribute, | |
3111 | * we stuff the error code into this attribute | |
3112 | * and continue. If this attribute was not requested, | |
3113 | * then in accordance with the spec, we fail the | |
3114 | * entire READDIR operation(!) | |
3115 | */ | |
3116 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
3117 | goto fail; | |
561f0ed4 | 3118 | p = nfsd4_encode_rdattr_error(xdr, nfserr); |
34081efc FI |
3119 | if (p == NULL) { |
3120 | nfserr = nfserr_toosmall; | |
1da177e4 | 3121 | goto fail; |
34081efc | 3122 | } |
1da177e4 | 3123 | } |
561f0ed4 BF |
3124 | nfserr = nfserr_toosmall; |
3125 | entry_bytes = xdr->buf->len - start_offset; | |
3126 | if (entry_bytes > cd->rd_maxcount) | |
3127 | goto fail; | |
3128 | cd->rd_maxcount -= entry_bytes; | |
aee37764 BF |
3129 | /* |
3130 | * RFC 3530 14.2.24 describes rd_dircount as only a "hint", so | |
3131 | * let's always let through the first entry, at least: | |
3132 | */ | |
0ec016e3 BF |
3133 | if (!cd->rd_dircount) |
3134 | goto fail; | |
3135 | name_and_cookie = 4 + 4 * XDR_QUADLEN(namlen) + 8; | |
aee37764 BF |
3136 | if (name_and_cookie > cd->rd_dircount && cd->cookie_offset) |
3137 | goto fail; | |
3138 | cd->rd_dircount -= min(cd->rd_dircount, name_and_cookie); | |
0ec016e3 | 3139 | |
561f0ed4 | 3140 | cd->cookie_offset = cookie_offset; |
b2c0cea6 | 3141 | skip_entry: |
1da177e4 LT |
3142 | cd->common.err = nfs_ok; |
3143 | return 0; | |
3144 | fail: | |
561f0ed4 | 3145 | xdr_truncate_encode(xdr, start_offset); |
1da177e4 LT |
3146 | cd->common.err = nfserr; |
3147 | return -EINVAL; | |
3148 | } | |
3149 | ||
d0a381dd BF |
3150 | static __be32 |
3151 | nfsd4_encode_stateid(struct xdr_stream *xdr, stateid_t *sid) | |
e2f282b9 | 3152 | { |
bc749ca4 | 3153 | __be32 *p; |
e2f282b9 | 3154 | |
d0a381dd BF |
3155 | p = xdr_reserve_space(xdr, sizeof(stateid_t)); |
3156 | if (!p) | |
3157 | return nfserr_resource; | |
c373b0a4 | 3158 | *p++ = cpu_to_be32(sid->si_generation); |
0c0c267b BF |
3159 | p = xdr_encode_opaque_fixed(p, &sid->si_opaque, |
3160 | sizeof(stateid_opaque_t)); | |
d0a381dd | 3161 | return 0; |
e2f282b9 BH |
3162 | } |
3163 | ||
695e12f8 | 3164 | static __be32 |
b37ad28b | 3165 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 3166 | { |
d0a381dd | 3167 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3168 | __be32 *p; |
1da177e4 | 3169 | |
bac966d6 BF |
3170 | p = xdr_reserve_space(xdr, 8); |
3171 | if (!p) | |
3172 | return nfserr_resource; | |
3173 | *p++ = cpu_to_be32(access->ac_supported); | |
3174 | *p++ = cpu_to_be32(access->ac_resp_access); | |
3175 | return 0; | |
1da177e4 LT |
3176 | } |
3177 | ||
1d1bc8f2 BF |
3178 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
3179 | { | |
d0a381dd | 3180 | struct xdr_stream *xdr = &resp->xdr; |
1d1bc8f2 BF |
3181 | __be32 *p; |
3182 | ||
bac966d6 BF |
3183 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 8); |
3184 | if (!p) | |
3185 | return nfserr_resource; | |
3186 | p = xdr_encode_opaque_fixed(p, bcts->sessionid.data, | |
3187 | NFS4_MAX_SESSIONID_LEN); | |
3188 | *p++ = cpu_to_be32(bcts->dir); | |
3189 | /* Upshifting from TCP to RDMA is not supported */ | |
3190 | *p++ = cpu_to_be32(0); | |
3191 | return 0; | |
1d1bc8f2 BF |
3192 | } |
3193 | ||
695e12f8 | 3194 | static __be32 |
b37ad28b | 3195 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 | 3196 | { |
d0a381dd BF |
3197 | struct xdr_stream *xdr = &resp->xdr; |
3198 | ||
bac966d6 | 3199 | return nfsd4_encode_stateid(xdr, &close->cl_stateid); |
1da177e4 LT |
3200 | } |
3201 | ||
3202 | ||
695e12f8 | 3203 | static __be32 |
b37ad28b | 3204 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 3205 | { |
d0a381dd | 3206 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3207 | __be32 *p; |
1da177e4 | 3208 | |
bac966d6 BF |
3209 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
3210 | if (!p) | |
3211 | return nfserr_resource; | |
3212 | p = xdr_encode_opaque_fixed(p, commit->co_verf.data, | |
0c0c267b | 3213 | NFS4_VERIFIER_SIZE); |
bac966d6 | 3214 | return 0; |
1da177e4 LT |
3215 | } |
3216 | ||
695e12f8 | 3217 | static __be32 |
b37ad28b | 3218 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 3219 | { |
d0a381dd | 3220 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3221 | __be32 *p; |
1da177e4 | 3222 | |
bac966d6 BF |
3223 | p = xdr_reserve_space(xdr, 20); |
3224 | if (!p) | |
3225 | return nfserr_resource; | |
3226 | encode_cinfo(p, &create->cr_cinfo); | |
3227 | nfserr = nfsd4_encode_bitmap(xdr, create->cr_bmval[0], | |
3228 | create->cr_bmval[1], create->cr_bmval[2]); | |
3229 | return 0; | |
1da177e4 LT |
3230 | } |
3231 | ||
b37ad28b AV |
3232 | static __be32 |
3233 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
3234 | { |
3235 | struct svc_fh *fhp = getattr->ga_fhp; | |
d5184658 | 3236 | struct xdr_stream *xdr = &resp->xdr; |
1da177e4 | 3237 | |
bac966d6 BF |
3238 | return nfsd4_encode_fattr(xdr, fhp, fhp->fh_export, fhp->fh_dentry, |
3239 | getattr->ga_bmval, resp->rqstp, 0); | |
1da177e4 LT |
3240 | } |
3241 | ||
695e12f8 BH |
3242 | static __be32 |
3243 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 3244 | { |
d0a381dd | 3245 | struct xdr_stream *xdr = &resp->xdr; |
695e12f8 | 3246 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 3247 | unsigned int len; |
bc749ca4 | 3248 | __be32 *p; |
1da177e4 | 3249 | |
bac966d6 BF |
3250 | len = fhp->fh_handle.fh_size; |
3251 | p = xdr_reserve_space(xdr, len + 4); | |
3252 | if (!p) | |
3253 | return nfserr_resource; | |
3254 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, len); | |
3255 | return 0; | |
1da177e4 LT |
3256 | } |
3257 | ||
3258 | /* | |
3259 | * Including all fields other than the name, a LOCK4denied structure requires | |
3260 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
3261 | */ | |
d0a381dd BF |
3262 | static __be32 |
3263 | nfsd4_encode_lock_denied(struct xdr_stream *xdr, struct nfsd4_lock_denied *ld) | |
1da177e4 | 3264 | { |
7c13f344 | 3265 | struct xdr_netobj *conf = &ld->ld_owner; |
bc749ca4 | 3266 | __be32 *p; |
1da177e4 | 3267 | |
8c7424cf | 3268 | again: |
d0a381dd | 3269 | p = xdr_reserve_space(xdr, 32 + XDR_LEN(conf->len)); |
8c7424cf BF |
3270 | if (!p) { |
3271 | /* | |
3272 | * Don't fail to return the result just because we can't | |
3273 | * return the conflicting open: | |
3274 | */ | |
3275 | if (conf->len) { | |
f98bac5a | 3276 | kfree(conf->data); |
8c7424cf BF |
3277 | conf->len = 0; |
3278 | conf->data = NULL; | |
3279 | goto again; | |
3280 | } | |
d0a381dd | 3281 | return nfserr_resource; |
8c7424cf | 3282 | } |
b64c7f3b BF |
3283 | p = xdr_encode_hyper(p, ld->ld_start); |
3284 | p = xdr_encode_hyper(p, ld->ld_length); | |
c373b0a4 | 3285 | *p++ = cpu_to_be32(ld->ld_type); |
7c13f344 | 3286 | if (conf->len) { |
0c0c267b BF |
3287 | p = xdr_encode_opaque_fixed(p, &ld->ld_clientid, 8); |
3288 | p = xdr_encode_opaque(p, conf->data, conf->len); | |
f98bac5a | 3289 | kfree(conf->data); |
1da177e4 | 3290 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
b64c7f3b | 3291 | p = xdr_encode_hyper(p, (u64)0); /* clientid */ |
c373b0a4 | 3292 | *p++ = cpu_to_be32(0); /* length of owner name */ |
1da177e4 | 3293 | } |
d0a381dd | 3294 | return nfserr_denied; |
1da177e4 LT |
3295 | } |
3296 | ||
695e12f8 | 3297 | static __be32 |
b37ad28b | 3298 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 3299 | { |
d0a381dd BF |
3300 | struct xdr_stream *xdr = &resp->xdr; |
3301 | ||
e2f282b9 | 3302 | if (!nfserr) |
d0a381dd | 3303 | nfserr = nfsd4_encode_stateid(xdr, &lock->lk_resp_stateid); |
e2f282b9 | 3304 | else if (nfserr == nfserr_denied) |
d0a381dd | 3305 | nfserr = nfsd4_encode_lock_denied(xdr, &lock->lk_denied); |
f98bac5a | 3306 | |
695e12f8 | 3307 | return nfserr; |
1da177e4 LT |
3308 | } |
3309 | ||
695e12f8 | 3310 | static __be32 |
b37ad28b | 3311 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 | 3312 | { |
d0a381dd BF |
3313 | struct xdr_stream *xdr = &resp->xdr; |
3314 | ||
1da177e4 | 3315 | if (nfserr == nfserr_denied) |
d0a381dd | 3316 | nfsd4_encode_lock_denied(xdr, &lockt->lt_denied); |
695e12f8 | 3317 | return nfserr; |
1da177e4 LT |
3318 | } |
3319 | ||
695e12f8 | 3320 | static __be32 |
b37ad28b | 3321 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 | 3322 | { |
d0a381dd BF |
3323 | struct xdr_stream *xdr = &resp->xdr; |
3324 | ||
bac966d6 | 3325 | return nfsd4_encode_stateid(xdr, &locku->lu_stateid); |
1da177e4 LT |
3326 | } |
3327 | ||
3328 | ||
695e12f8 | 3329 | static __be32 |
b37ad28b | 3330 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 3331 | { |
d0a381dd | 3332 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3333 | __be32 *p; |
1da177e4 | 3334 | |
bac966d6 BF |
3335 | p = xdr_reserve_space(xdr, 20); |
3336 | if (!p) | |
3337 | return nfserr_resource; | |
3338 | p = encode_cinfo(p, &link->li_cinfo); | |
3339 | return 0; | |
1da177e4 LT |
3340 | } |
3341 | ||
3342 | ||
695e12f8 | 3343 | static __be32 |
b37ad28b | 3344 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 3345 | { |
d0a381dd | 3346 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3347 | __be32 *p; |
1da177e4 | 3348 | |
d0a381dd BF |
3349 | nfserr = nfsd4_encode_stateid(xdr, &open->op_stateid); |
3350 | if (nfserr) | |
bac966d6 | 3351 | return nfserr; |
75976de6 | 3352 | p = xdr_reserve_space(xdr, 24); |
d0a381dd BF |
3353 | if (!p) |
3354 | return nfserr_resource; | |
d05d5744 | 3355 | p = encode_cinfo(p, &open->op_cinfo); |
c373b0a4 | 3356 | *p++ = cpu_to_be32(open->op_rflags); |
1da177e4 | 3357 | |
75976de6 KM |
3358 | nfserr = nfsd4_encode_bitmap(xdr, open->op_bmval[0], open->op_bmval[1], |
3359 | open->op_bmval[2]); | |
3360 | if (nfserr) | |
bac966d6 | 3361 | return nfserr; |
75976de6 KM |
3362 | |
3363 | p = xdr_reserve_space(xdr, 4); | |
3364 | if (!p) | |
3365 | return nfserr_resource; | |
3366 | ||
3367 | *p++ = cpu_to_be32(open->op_delegate_type); | |
1da177e4 LT |
3368 | switch (open->op_delegate_type) { |
3369 | case NFS4_OPEN_DELEGATE_NONE: | |
3370 | break; | |
3371 | case NFS4_OPEN_DELEGATE_READ: | |
d0a381dd BF |
3372 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
3373 | if (nfserr) | |
3374 | return nfserr; | |
3375 | p = xdr_reserve_space(xdr, 20); | |
3376 | if (!p) | |
3377 | return nfserr_resource; | |
c373b0a4 | 3378 | *p++ = cpu_to_be32(open->op_recall); |
1da177e4 LT |
3379 | |
3380 | /* | |
3381 | * TODO: ACE's in delegations | |
3382 | */ | |
c373b0a4 BF |
3383 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
3384 | *p++ = cpu_to_be32(0); | |
3385 | *p++ = cpu_to_be32(0); | |
3386 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 LT |
3387 | break; |
3388 | case NFS4_OPEN_DELEGATE_WRITE: | |
d0a381dd BF |
3389 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
3390 | if (nfserr) | |
3391 | return nfserr; | |
3392 | p = xdr_reserve_space(xdr, 32); | |
3393 | if (!p) | |
3394 | return nfserr_resource; | |
c373b0a4 | 3395 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
3396 | |
3397 | /* | |
3398 | * TODO: space_limit's in delegations | |
3399 | */ | |
c373b0a4 BF |
3400 | *p++ = cpu_to_be32(NFS4_LIMIT_SIZE); |
3401 | *p++ = cpu_to_be32(~(u32)0); | |
3402 | *p++ = cpu_to_be32(~(u32)0); | |
1da177e4 LT |
3403 | |
3404 | /* | |
3405 | * TODO: ACE's in delegations | |
3406 | */ | |
c373b0a4 BF |
3407 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
3408 | *p++ = cpu_to_be32(0); | |
3409 | *p++ = cpu_to_be32(0); | |
3410 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 | 3411 | break; |
d24433cd BH |
3412 | case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */ |
3413 | switch (open->op_why_no_deleg) { | |
3414 | case WND4_CONTENTION: | |
3415 | case WND4_RESOURCE: | |
d0a381dd BF |
3416 | p = xdr_reserve_space(xdr, 8); |
3417 | if (!p) | |
3418 | return nfserr_resource; | |
c373b0a4 BF |
3419 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
3420 | /* deleg signaling not supported yet: */ | |
3421 | *p++ = cpu_to_be32(0); | |
d24433cd BH |
3422 | break; |
3423 | default: | |
d0a381dd BF |
3424 | p = xdr_reserve_space(xdr, 4); |
3425 | if (!p) | |
3426 | return nfserr_resource; | |
c373b0a4 | 3427 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
d24433cd | 3428 | } |
d24433cd | 3429 | break; |
1da177e4 LT |
3430 | default: |
3431 | BUG(); | |
3432 | } | |
3433 | /* XXX save filehandle here */ | |
bac966d6 | 3434 | return 0; |
1da177e4 LT |
3435 | } |
3436 | ||
695e12f8 | 3437 | static __be32 |
b37ad28b | 3438 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 | 3439 | { |
d0a381dd BF |
3440 | struct xdr_stream *xdr = &resp->xdr; |
3441 | ||
bac966d6 | 3442 | return nfsd4_encode_stateid(xdr, &oc->oc_resp_stateid); |
1da177e4 LT |
3443 | } |
3444 | ||
695e12f8 | 3445 | static __be32 |
b37ad28b | 3446 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 | 3447 | { |
d0a381dd BF |
3448 | struct xdr_stream *xdr = &resp->xdr; |
3449 | ||
bac966d6 | 3450 | return nfsd4_encode_stateid(xdr, &od->od_stateid); |
1da177e4 LT |
3451 | } |
3452 | ||
dc97618d BF |
3453 | static __be32 nfsd4_encode_splice_read( |
3454 | struct nfsd4_compoundres *resp, | |
3455 | struct nfsd4_read *read, | |
3456 | struct file *file, unsigned long maxcount) | |
1da177e4 | 3457 | { |
ddd1ea56 | 3458 | struct xdr_stream *xdr = &resp->xdr; |
34a78b48 | 3459 | struct xdr_buf *buf = xdr->buf; |
dc97618d | 3460 | u32 eof; |
ac503e4a | 3461 | long len; |
30596768 | 3462 | int space_left; |
dc97618d | 3463 | __be32 nfserr; |
fec25fa4 | 3464 | __be32 *p = xdr->p - 2; |
1da177e4 | 3465 | |
d5d5c304 KM |
3466 | /* Make sure there will be room for padding if needed */ |
3467 | if (xdr->end - xdr->p < 1) | |
d0a381dd | 3468 | return nfserr_resource; |
dc97618d | 3469 | |
ac503e4a | 3470 | len = maxcount; |
87c5942e CL |
3471 | nfserr = nfsd_splice_read(read->rd_rqstp, read->rd_fhp, |
3472 | file, read->rd_offset, &maxcount); | |
3473 | read->rd_length = maxcount; | |
dc97618d BF |
3474 | if (nfserr) { |
3475 | /* | |
3476 | * nfsd_splice_actor may have already messed with the | |
3477 | * page length; reset it so as not to confuse | |
3478 | * xdr_truncate_encode: | |
3479 | */ | |
34a78b48 | 3480 | buf->page_len = 0; |
dc97618d | 3481 | return nfserr; |
b0e35fda | 3482 | } |
1da177e4 | 3483 | |
ac503e4a BC |
3484 | eof = nfsd_eof_on_read(len, maxcount, read->rd_offset, |
3485 | d_inode(read->rd_fhp->fh_dentry)->i_size); | |
4e21ac4b | 3486 | |
fec25fa4 BF |
3487 | *(p++) = htonl(eof); |
3488 | *(p++) = htonl(maxcount); | |
dc97618d | 3489 | |
34a78b48 BF |
3490 | buf->page_len = maxcount; |
3491 | buf->len += maxcount; | |
15b23ef5 BF |
3492 | xdr->page_ptr += (buf->page_base + maxcount + PAGE_SIZE - 1) |
3493 | / PAGE_SIZE; | |
dc97618d BF |
3494 | |
3495 | /* Use rest of head for padding and remaining ops: */ | |
34a78b48 BF |
3496 | buf->tail[0].iov_base = xdr->p; |
3497 | buf->tail[0].iov_len = 0; | |
fec25fa4 | 3498 | xdr->iov = buf->tail; |
dc97618d | 3499 | if (maxcount&3) { |
fec25fa4 BF |
3500 | int pad = 4 - (maxcount&3); |
3501 | ||
3502 | *(xdr->p++) = 0; | |
3503 | ||
34a78b48 | 3504 | buf->tail[0].iov_base += maxcount&3; |
fec25fa4 BF |
3505 | buf->tail[0].iov_len = pad; |
3506 | buf->len += pad; | |
b0e35fda | 3507 | } |
2825a7f9 | 3508 | |
dc97618d | 3509 | space_left = min_t(int, (void *)xdr->end - (void *)xdr->p, |
34a78b48 BF |
3510 | buf->buflen - buf->len); |
3511 | buf->buflen = buf->len + space_left; | |
dc97618d BF |
3512 | xdr->end = (__be32 *)((void *)xdr->end + space_left); |
3513 | ||
3514 | return 0; | |
3515 | } | |
3516 | ||
3517 | static __be32 nfsd4_encode_readv(struct nfsd4_compoundres *resp, | |
3518 | struct nfsd4_read *read, | |
3519 | struct file *file, unsigned long maxcount) | |
3520 | { | |
3521 | struct xdr_stream *xdr = &resp->xdr; | |
3522 | u32 eof; | |
3523 | int v; | |
dc97618d | 3524 | int starting_len = xdr->buf->len - 8; |
dc97618d | 3525 | long len; |
b0420980 | 3526 | int thislen; |
dc97618d BF |
3527 | __be32 nfserr; |
3528 | __be32 tmp; | |
3529 | __be32 *p; | |
b0420980 BF |
3530 | u32 zzz = 0; |
3531 | int pad; | |
1da177e4 LT |
3532 | |
3533 | len = maxcount; | |
3534 | v = 0; | |
6ff9897d | 3535 | |
1055414f | 3536 | thislen = min_t(long, len, ((void *)xdr->end - (void *)xdr->p)); |
b0420980 BF |
3537 | p = xdr_reserve_space(xdr, (thislen+3)&~3); |
3538 | WARN_ON_ONCE(!p); | |
3539 | resp->rqstp->rq_vec[v].iov_base = p; | |
3540 | resp->rqstp->rq_vec[v].iov_len = thislen; | |
3541 | v++; | |
3542 | len -= thislen; | |
3543 | ||
3544 | while (len) { | |
6ff9897d | 3545 | thislen = min_t(long, len, PAGE_SIZE); |
b0420980 BF |
3546 | p = xdr_reserve_space(xdr, (thislen+3)&~3); |
3547 | WARN_ON_ONCE(!p); | |
3548 | resp->rqstp->rq_vec[v].iov_base = p; | |
6ff9897d | 3549 | resp->rqstp->rq_vec[v].iov_len = thislen; |
1da177e4 | 3550 | v++; |
6ff9897d | 3551 | len -= thislen; |
1da177e4 LT |
3552 | } |
3553 | read->rd_vlen = v; | |
3554 | ||
ac503e4a | 3555 | len = maxcount; |
87c5942e CL |
3556 | nfserr = nfsd_readv(resp->rqstp, read->rd_fhp, file, read->rd_offset, |
3557 | resp->rqstp->rq_vec, read->rd_vlen, &maxcount); | |
3558 | read->rd_length = maxcount; | |
dc97618d | 3559 | if (nfserr) |
1da177e4 | 3560 | return nfserr; |
b0420980 | 3561 | xdr_truncate_encode(xdr, starting_len + 8 + ((maxcount+3)&~3)); |
dc97618d | 3562 | |
ac503e4a BC |
3563 | eof = nfsd_eof_on_read(len, maxcount, read->rd_offset, |
3564 | d_inode(read->rd_fhp->fh_dentry)->i_size); | |
1da177e4 | 3565 | |
dc97618d BF |
3566 | tmp = htonl(eof); |
3567 | write_bytes_to_xdr_buf(xdr->buf, starting_len , &tmp, 4); | |
3568 | tmp = htonl(maxcount); | |
3569 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 4, &tmp, 4); | |
3570 | ||
b0420980 BF |
3571 | pad = (maxcount&3) ? 4 - (maxcount&3) : 0; |
3572 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 8 + maxcount, | |
3573 | &zzz, pad); | |
1da177e4 | 3574 | return 0; |
dc97618d BF |
3575 | |
3576 | } | |
3577 | ||
3578 | static __be32 | |
3579 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3580 | struct nfsd4_read *read) | |
3581 | { | |
3582 | unsigned long maxcount; | |
3583 | struct xdr_stream *xdr = &resp->xdr; | |
3584 | struct file *file = read->rd_filp; | |
3585 | int starting_len = xdr->buf->len; | |
e749a462 | 3586 | struct raparms *ra = NULL; |
dc97618d | 3587 | __be32 *p; |
dc97618d | 3588 | |
dc97618d BF |
3589 | p = xdr_reserve_space(xdr, 8); /* eof flag and byte count */ |
3590 | if (!p) { | |
779fb0f3 | 3591 | WARN_ON_ONCE(test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)); |
bac966d6 | 3592 | return nfserr_resource; |
dc97618d | 3593 | } |
68e8bb03 CH |
3594 | if (resp->xdr.buf->page_len && |
3595 | test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) { | |
b0420980 | 3596 | WARN_ON_ONCE(1); |
bac966d6 | 3597 | return nfserr_resource; |
dc97618d | 3598 | } |
dc97618d BF |
3599 | xdr_commit_encode(xdr); |
3600 | ||
3601 | maxcount = svc_max_payload(resp->rqstp); | |
68e8bb03 CH |
3602 | maxcount = min_t(unsigned long, maxcount, |
3603 | (xdr->buf->buflen - xdr->buf->len)); | |
3c7aa15d | 3604 | maxcount = min_t(unsigned long, maxcount, read->rd_length); |
dc97618d | 3605 | |
af90f707 | 3606 | if (read->rd_tmp_file) |
e749a462 | 3607 | ra = nfsd_init_raparms(file); |
dc97618d | 3608 | |
68e8bb03 CH |
3609 | if (file->f_op->splice_read && |
3610 | test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) | |
96bcad50 | 3611 | nfserr = nfsd4_encode_splice_read(resp, read, file, maxcount); |
dc97618d | 3612 | else |
96bcad50 | 3613 | nfserr = nfsd4_encode_readv(resp, read, file, maxcount); |
dc97618d | 3614 | |
e749a462 CH |
3615 | if (ra) |
3616 | nfsd_put_raparams(file, ra); | |
dc97618d | 3617 | |
96bcad50 | 3618 | if (nfserr) |
dc97618d | 3619 | xdr_truncate_encode(xdr, starting_len); |
96bcad50 | 3620 | |
96bcad50 | 3621 | return nfserr; |
1da177e4 LT |
3622 | } |
3623 | ||
b37ad28b AV |
3624 | static __be32 |
3625 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
3626 | { |
3627 | int maxcount; | |
476a7b1f BF |
3628 | __be32 wire_count; |
3629 | int zero = 0; | |
ddd1ea56 | 3630 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3631 | int length_offset = xdr->buf->len; |
bc749ca4 | 3632 | __be32 *p; |
1da177e4 | 3633 | |
2825a7f9 BF |
3634 | p = xdr_reserve_space(xdr, 4); |
3635 | if (!p) | |
3636 | return nfserr_resource; | |
1da177e4 | 3637 | maxcount = PAGE_SIZE; |
d0a381dd | 3638 | |
476a7b1f BF |
3639 | p = xdr_reserve_space(xdr, maxcount); |
3640 | if (!p) | |
4e21ac4b | 3641 | return nfserr_resource; |
1da177e4 | 3642 | /* |
fd4a0edf MS |
3643 | * XXX: By default, vfs_readlink() will truncate symlinks if they |
3644 | * would overflow the buffer. Is this kosher in NFSv4? If not, one | |
3645 | * easy fix is: if vfs_readlink() precisely fills the buffer, assume | |
3646 | * that truncation occurred, and return NFS4ERR_RESOURCE. | |
1da177e4 | 3647 | */ |
476a7b1f BF |
3648 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, |
3649 | (char *)p, &maxcount); | |
1da177e4 | 3650 | if (nfserr == nfserr_isdir) |
d3f627c8 BF |
3651 | nfserr = nfserr_inval; |
3652 | if (nfserr) { | |
1fcea5b2 | 3653 | xdr_truncate_encode(xdr, length_offset); |
1da177e4 | 3654 | return nfserr; |
d3f627c8 | 3655 | } |
1da177e4 | 3656 | |
476a7b1f BF |
3657 | wire_count = htonl(maxcount); |
3658 | write_bytes_to_xdr_buf(xdr->buf, length_offset, &wire_count, 4); | |
69bbd9c7 | 3659 | xdr_truncate_encode(xdr, length_offset + 4 + ALIGN(maxcount, 4)); |
476a7b1f BF |
3660 | if (maxcount & 3) |
3661 | write_bytes_to_xdr_buf(xdr->buf, length_offset + 4 + maxcount, | |
3662 | &zero, 4 - (maxcount&3)); | |
1da177e4 LT |
3663 | return 0; |
3664 | } | |
3665 | ||
b37ad28b AV |
3666 | static __be32 |
3667 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
3668 | { |
3669 | int maxcount; | |
561f0ed4 | 3670 | int bytes_left; |
1da177e4 | 3671 | loff_t offset; |
561f0ed4 | 3672 | __be64 wire_offset; |
ddd1ea56 | 3673 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3674 | int starting_len = xdr->buf->len; |
bc749ca4 | 3675 | __be32 *p; |
1da177e4 | 3676 | |
d0a381dd BF |
3677 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
3678 | if (!p) | |
3679 | return nfserr_resource; | |
1da177e4 LT |
3680 | |
3681 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
c373b0a4 BF |
3682 | *p++ = cpu_to_be32(0); |
3683 | *p++ = cpu_to_be32(0); | |
4aea24b2 BF |
3684 | resp->xdr.buf->head[0].iov_len = ((char *)resp->xdr.p) |
3685 | - (char *)resp->xdr.buf->head[0].iov_base; | |
1da177e4 LT |
3686 | |
3687 | /* | |
561f0ed4 BF |
3688 | * Number of bytes left for directory entries allowing for the |
3689 | * final 8 bytes of the readdir and a following failed op: | |
3690 | */ | |
3691 | bytes_left = xdr->buf->buflen - xdr->buf->len | |
3692 | - COMPOUND_ERR_SLACK_SPACE - 8; | |
3693 | if (bytes_left < 0) { | |
3694 | nfserr = nfserr_resource; | |
3695 | goto err_no_verf; | |
3696 | } | |
9c2ece6e SM |
3697 | maxcount = svc_max_payload(resp->rqstp); |
3698 | maxcount = min_t(u32, readdir->rd_maxcount, maxcount); | |
561f0ed4 BF |
3699 | /* |
3700 | * Note the rfc defines rd_maxcount as the size of the | |
3701 | * READDIR4resok structure, which includes the verifier above | |
3702 | * and the 8 bytes encoded at the end of this function: | |
1da177e4 | 3703 | */ |
561f0ed4 BF |
3704 | if (maxcount < 16) { |
3705 | nfserr = nfserr_toosmall; | |
1da177e4 LT |
3706 | goto err_no_verf; |
3707 | } | |
561f0ed4 | 3708 | maxcount = min_t(int, maxcount-16, bytes_left); |
1da177e4 | 3709 | |
aee37764 BF |
3710 | /* RFC 3530 14.2.24 allows us to ignore dircount when it's 0: */ |
3711 | if (!readdir->rd_dircount) | |
9c2ece6e | 3712 | readdir->rd_dircount = svc_max_payload(resp->rqstp); |
aee37764 | 3713 | |
561f0ed4 BF |
3714 | readdir->xdr = xdr; |
3715 | readdir->rd_maxcount = maxcount; | |
1da177e4 | 3716 | readdir->common.err = 0; |
561f0ed4 | 3717 | readdir->cookie_offset = 0; |
1da177e4 LT |
3718 | |
3719 | offset = readdir->rd_cookie; | |
3720 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
3721 | &offset, | |
3722 | &readdir->common, nfsd4_encode_dirent); | |
3723 | if (nfserr == nfs_ok && | |
3724 | readdir->common.err == nfserr_toosmall && | |
561f0ed4 BF |
3725 | xdr->buf->len == starting_len + 8) { |
3726 | /* nothing encoded; which limit did we hit?: */ | |
3727 | if (maxcount - 16 < bytes_left) | |
3728 | /* It was the fault of rd_maxcount: */ | |
3729 | nfserr = nfserr_toosmall; | |
3730 | else | |
3731 | /* We ran out of buffer space: */ | |
3732 | nfserr = nfserr_resource; | |
3733 | } | |
1da177e4 LT |
3734 | if (nfserr) |
3735 | goto err_no_verf; | |
3736 | ||
561f0ed4 BF |
3737 | if (readdir->cookie_offset) { |
3738 | wire_offset = cpu_to_be64(offset); | |
3739 | write_bytes_to_xdr_buf(xdr->buf, readdir->cookie_offset, | |
3740 | &wire_offset, 8); | |
3741 | } | |
1da177e4 | 3742 | |
561f0ed4 BF |
3743 | p = xdr_reserve_space(xdr, 8); |
3744 | if (!p) { | |
3745 | WARN_ON_ONCE(1); | |
3746 | goto err_no_verf; | |
3747 | } | |
1da177e4 LT |
3748 | *p++ = 0; /* no more entries */ |
3749 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
1da177e4 LT |
3750 | |
3751 | return 0; | |
3752 | err_no_verf: | |
1fcea5b2 | 3753 | xdr_truncate_encode(xdr, starting_len); |
1da177e4 LT |
3754 | return nfserr; |
3755 | } | |
3756 | ||
695e12f8 | 3757 | static __be32 |
b37ad28b | 3758 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 3759 | { |
d0a381dd | 3760 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3761 | __be32 *p; |
1da177e4 | 3762 | |
bac966d6 BF |
3763 | p = xdr_reserve_space(xdr, 20); |
3764 | if (!p) | |
3765 | return nfserr_resource; | |
3766 | p = encode_cinfo(p, &remove->rm_cinfo); | |
3767 | return 0; | |
1da177e4 LT |
3768 | } |
3769 | ||
695e12f8 | 3770 | static __be32 |
b37ad28b | 3771 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 3772 | { |
d0a381dd | 3773 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3774 | __be32 *p; |
1da177e4 | 3775 | |
bac966d6 BF |
3776 | p = xdr_reserve_space(xdr, 40); |
3777 | if (!p) | |
3778 | return nfserr_resource; | |
3779 | p = encode_cinfo(p, &rename->rn_sinfo); | |
3780 | p = encode_cinfo(p, &rename->rn_tinfo); | |
3781 | return 0; | |
1da177e4 LT |
3782 | } |
3783 | ||
695e12f8 | 3784 | static __be32 |
bac966d6 | 3785 | nfsd4_do_encode_secinfo(struct xdr_stream *xdr, struct svc_export *exp) |
dcb488a3 | 3786 | { |
676e4ebd | 3787 | u32 i, nflavs, supported; |
4796f457 BF |
3788 | struct exp_flavor_info *flavs; |
3789 | struct exp_flavor_info def_flavs[2]; | |
676e4ebd CL |
3790 | __be32 *p, *flavorsp; |
3791 | static bool report = true; | |
dcb488a3 | 3792 | |
4796f457 BF |
3793 | if (exp->ex_nflavors) { |
3794 | flavs = exp->ex_flavors; | |
3795 | nflavs = exp->ex_nflavors; | |
3796 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
3797 | flavs = def_flavs; | |
3798 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
3799 | nflavs = 2; | |
3800 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
3801 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
3802 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
3803 | nflavs = 1; | |
3804 | flavs[0].pseudoflavor | |
3805 | = svcauth_gss_flavor(exp->ex_client); | |
3806 | } else { | |
3807 | nflavs = 1; | |
3808 | flavs[0].pseudoflavor | |
3809 | = exp->ex_client->flavour->flavour; | |
3810 | } | |
3811 | } | |
3812 | ||
676e4ebd | 3813 | supported = 0; |
d0a381dd BF |
3814 | p = xdr_reserve_space(xdr, 4); |
3815 | if (!p) | |
bac966d6 | 3816 | return nfserr_resource; |
676e4ebd | 3817 | flavorsp = p++; /* to be backfilled later */ |
676e4ebd | 3818 | |
4796f457 | 3819 | for (i = 0; i < nflavs; i++) { |
676e4ebd | 3820 | rpc_authflavor_t pf = flavs[i].pseudoflavor; |
a77c806f | 3821 | struct rpcsec_gss_info info; |
dcb488a3 | 3822 | |
676e4ebd CL |
3823 | if (rpcauth_get_gssinfo(pf, &info) == 0) { |
3824 | supported++; | |
d0a381dd BF |
3825 | p = xdr_reserve_space(xdr, 4 + 4 + |
3826 | XDR_LEN(info.oid.len) + 4 + 4); | |
3827 | if (!p) | |
bac966d6 | 3828 | return nfserr_resource; |
c373b0a4 | 3829 | *p++ = cpu_to_be32(RPC_AUTH_GSS); |
0c0c267b | 3830 | p = xdr_encode_opaque(p, info.oid.data, info.oid.len); |
c373b0a4 BF |
3831 | *p++ = cpu_to_be32(info.qop); |
3832 | *p++ = cpu_to_be32(info.service); | |
676e4ebd CL |
3833 | } else if (pf < RPC_AUTH_MAXFLAVOR) { |
3834 | supported++; | |
d0a381dd BF |
3835 | p = xdr_reserve_space(xdr, 4); |
3836 | if (!p) | |
bac966d6 | 3837 | return nfserr_resource; |
c373b0a4 | 3838 | *p++ = cpu_to_be32(pf); |
676e4ebd CL |
3839 | } else { |
3840 | if (report) | |
3841 | pr_warn("NFS: SECINFO: security flavor %u " | |
3842 | "is not supported\n", pf); | |
dcb488a3 AA |
3843 | } |
3844 | } | |
a77c806f | 3845 | |
676e4ebd CL |
3846 | if (nflavs != supported) |
3847 | report = false; | |
3848 | *flavorsp = htonl(supported); | |
bac966d6 | 3849 | return 0; |
dcb488a3 AA |
3850 | } |
3851 | ||
22b6dee8 MJ |
3852 | static __be32 |
3853 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3854 | struct nfsd4_secinfo *secinfo) | |
3855 | { | |
d0a381dd BF |
3856 | struct xdr_stream *xdr = &resp->xdr; |
3857 | ||
bac966d6 | 3858 | return nfsd4_do_encode_secinfo(xdr, secinfo->si_exp); |
22b6dee8 MJ |
3859 | } |
3860 | ||
3861 | static __be32 | |
3862 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3863 | struct nfsd4_secinfo_no_name *secinfo) | |
3864 | { | |
d0a381dd BF |
3865 | struct xdr_stream *xdr = &resp->xdr; |
3866 | ||
bac966d6 | 3867 | return nfsd4_do_encode_secinfo(xdr, secinfo->sin_exp); |
22b6dee8 MJ |
3868 | } |
3869 | ||
1da177e4 LT |
3870 | /* |
3871 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
3872 | * regardless of the error status. | |
3873 | */ | |
695e12f8 | 3874 | static __be32 |
b37ad28b | 3875 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 3876 | { |
d0a381dd | 3877 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3878 | __be32 *p; |
1da177e4 | 3879 | |
d0a381dd BF |
3880 | p = xdr_reserve_space(xdr, 16); |
3881 | if (!p) | |
3882 | return nfserr_resource; | |
1da177e4 | 3883 | if (nfserr) { |
c373b0a4 BF |
3884 | *p++ = cpu_to_be32(3); |
3885 | *p++ = cpu_to_be32(0); | |
3886 | *p++ = cpu_to_be32(0); | |
3887 | *p++ = cpu_to_be32(0); | |
1da177e4 LT |
3888 | } |
3889 | else { | |
c373b0a4 BF |
3890 | *p++ = cpu_to_be32(3); |
3891 | *p++ = cpu_to_be32(setattr->sa_bmval[0]); | |
3892 | *p++ = cpu_to_be32(setattr->sa_bmval[1]); | |
3893 | *p++ = cpu_to_be32(setattr->sa_bmval[2]); | |
1da177e4 | 3894 | } |
695e12f8 | 3895 | return nfserr; |
1da177e4 LT |
3896 | } |
3897 | ||
695e12f8 | 3898 | static __be32 |
b37ad28b | 3899 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 3900 | { |
d0a381dd | 3901 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3902 | __be32 *p; |
1da177e4 LT |
3903 | |
3904 | if (!nfserr) { | |
d0a381dd BF |
3905 | p = xdr_reserve_space(xdr, 8 + NFS4_VERIFIER_SIZE); |
3906 | if (!p) | |
3907 | return nfserr_resource; | |
0c0c267b BF |
3908 | p = xdr_encode_opaque_fixed(p, &scd->se_clientid, 8); |
3909 | p = xdr_encode_opaque_fixed(p, &scd->se_confirm, | |
3910 | NFS4_VERIFIER_SIZE); | |
1da177e4 LT |
3911 | } |
3912 | else if (nfserr == nfserr_clid_inuse) { | |
d0a381dd BF |
3913 | p = xdr_reserve_space(xdr, 8); |
3914 | if (!p) | |
3915 | return nfserr_resource; | |
c373b0a4 BF |
3916 | *p++ = cpu_to_be32(0); |
3917 | *p++ = cpu_to_be32(0); | |
1da177e4 | 3918 | } |
695e12f8 | 3919 | return nfserr; |
1da177e4 LT |
3920 | } |
3921 | ||
695e12f8 | 3922 | static __be32 |
b37ad28b | 3923 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 3924 | { |
d0a381dd | 3925 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3926 | __be32 *p; |
1da177e4 | 3927 | |
bac966d6 BF |
3928 | p = xdr_reserve_space(xdr, 16); |
3929 | if (!p) | |
3930 | return nfserr_resource; | |
3931 | *p++ = cpu_to_be32(write->wr_bytes_written); | |
3932 | *p++ = cpu_to_be32(write->wr_how_written); | |
3933 | p = xdr_encode_opaque_fixed(p, write->wr_verifier.data, | |
3934 | NFS4_VERIFIER_SIZE); | |
3935 | return 0; | |
1da177e4 LT |
3936 | } |
3937 | ||
2db134eb | 3938 | static __be32 |
57b7b43b | 3939 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3940 | struct nfsd4_exchange_id *exid) |
3941 | { | |
d0a381dd | 3942 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3943 | __be32 *p; |
0733d213 AA |
3944 | char *major_id; |
3945 | char *server_scope; | |
3946 | int major_id_sz; | |
3947 | int server_scope_sz; | |
3948 | uint64_t minor_id = 0; | |
3949 | ||
0733d213 AA |
3950 | major_id = utsname()->nodename; |
3951 | major_id_sz = strlen(major_id); | |
3952 | server_scope = utsname()->nodename; | |
3953 | server_scope_sz = strlen(server_scope); | |
3954 | ||
d0a381dd | 3955 | p = xdr_reserve_space(xdr, |
0733d213 AA |
3956 | 8 /* eir_clientid */ + |
3957 | 4 /* eir_sequenceid */ + | |
3958 | 4 /* eir_flags */ + | |
a8bb84bc | 3959 | 4 /* spr_how */); |
d0a381dd BF |
3960 | if (!p) |
3961 | return nfserr_resource; | |
0733d213 | 3962 | |
0c0c267b | 3963 | p = xdr_encode_opaque_fixed(p, &exid->clientid, 8); |
c373b0a4 BF |
3964 | *p++ = cpu_to_be32(exid->seqid); |
3965 | *p++ = cpu_to_be32(exid->flags); | |
0733d213 | 3966 | |
c373b0a4 | 3967 | *p++ = cpu_to_be32(exid->spa_how); |
a8bb84bc | 3968 | |
57266a6e BF |
3969 | switch (exid->spa_how) { |
3970 | case SP4_NONE: | |
3971 | break; | |
3972 | case SP4_MACH_CRED: | |
3973 | /* spo_must_enforce bitmap: */ | |
bac966d6 | 3974 | nfserr = nfsd4_encode_bitmap(xdr, |
ed941643 AE |
3975 | exid->spo_must_enforce[0], |
3976 | exid->spo_must_enforce[1], | |
3977 | exid->spo_must_enforce[2]); | |
bac966d6 BF |
3978 | if (nfserr) |
3979 | return nfserr; | |
ed941643 | 3980 | /* spo_must_allow bitmap: */ |
bac966d6 | 3981 | nfserr = nfsd4_encode_bitmap(xdr, |
ed941643 AE |
3982 | exid->spo_must_allow[0], |
3983 | exid->spo_must_allow[1], | |
3984 | exid->spo_must_allow[2]); | |
bac966d6 BF |
3985 | if (nfserr) |
3986 | return nfserr; | |
57266a6e BF |
3987 | break; |
3988 | default: | |
3989 | WARN_ON_ONCE(1); | |
3990 | } | |
0733d213 | 3991 | |
d0a381dd | 3992 | p = xdr_reserve_space(xdr, |
a8bb84bc KM |
3993 | 8 /* so_minor_id */ + |
3994 | 4 /* so_major_id.len */ + | |
3995 | (XDR_QUADLEN(major_id_sz) * 4) + | |
3996 | 4 /* eir_server_scope.len */ + | |
3997 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
3998 | 4 /* eir_server_impl_id.count (0) */); | |
d0a381dd BF |
3999 | if (!p) |
4000 | return nfserr_resource; | |
a8bb84bc | 4001 | |
0733d213 | 4002 | /* The server_owner struct */ |
b64c7f3b | 4003 | p = xdr_encode_hyper(p, minor_id); /* Minor id */ |
0733d213 | 4004 | /* major id */ |
0c0c267b | 4005 | p = xdr_encode_opaque(p, major_id, major_id_sz); |
0733d213 AA |
4006 | |
4007 | /* Server scope */ | |
0c0c267b | 4008 | p = xdr_encode_opaque(p, server_scope, server_scope_sz); |
0733d213 AA |
4009 | |
4010 | /* Implementation id */ | |
c373b0a4 | 4011 | *p++ = cpu_to_be32(0); /* zero length nfs_impl_id4 array */ |
0733d213 | 4012 | return 0; |
2db134eb AA |
4013 | } |
4014 | ||
4015 | static __be32 | |
57b7b43b | 4016 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
4017 | struct nfsd4_create_session *sess) |
4018 | { | |
d0a381dd | 4019 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 4020 | __be32 *p; |
ec6b5d7b | 4021 | |
d0a381dd BF |
4022 | p = xdr_reserve_space(xdr, 24); |
4023 | if (!p) | |
4024 | return nfserr_resource; | |
0c0c267b BF |
4025 | p = xdr_encode_opaque_fixed(p, sess->sessionid.data, |
4026 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
4027 | *p++ = cpu_to_be32(sess->seqid); |
4028 | *p++ = cpu_to_be32(sess->flags); | |
ec6b5d7b | 4029 | |
d0a381dd BF |
4030 | p = xdr_reserve_space(xdr, 28); |
4031 | if (!p) | |
4032 | return nfserr_resource; | |
c373b0a4 BF |
4033 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
4034 | *p++ = cpu_to_be32(sess->fore_channel.maxreq_sz); | |
4035 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_sz); | |
4036 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_cached); | |
4037 | *p++ = cpu_to_be32(sess->fore_channel.maxops); | |
4038 | *p++ = cpu_to_be32(sess->fore_channel.maxreqs); | |
4039 | *p++ = cpu_to_be32(sess->fore_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
4040 | |
4041 | if (sess->fore_channel.nr_rdma_attrs) { | |
d0a381dd BF |
4042 | p = xdr_reserve_space(xdr, 4); |
4043 | if (!p) | |
4044 | return nfserr_resource; | |
c373b0a4 | 4045 | *p++ = cpu_to_be32(sess->fore_channel.rdma_attrs); |
ec6b5d7b AA |
4046 | } |
4047 | ||
d0a381dd BF |
4048 | p = xdr_reserve_space(xdr, 28); |
4049 | if (!p) | |
4050 | return nfserr_resource; | |
c373b0a4 BF |
4051 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
4052 | *p++ = cpu_to_be32(sess->back_channel.maxreq_sz); | |
4053 | *p++ = cpu_to_be32(sess->back_channel.maxresp_sz); | |
4054 | *p++ = cpu_to_be32(sess->back_channel.maxresp_cached); | |
4055 | *p++ = cpu_to_be32(sess->back_channel.maxops); | |
4056 | *p++ = cpu_to_be32(sess->back_channel.maxreqs); | |
4057 | *p++ = cpu_to_be32(sess->back_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
4058 | |
4059 | if (sess->back_channel.nr_rdma_attrs) { | |
d0a381dd BF |
4060 | p = xdr_reserve_space(xdr, 4); |
4061 | if (!p) | |
4062 | return nfserr_resource; | |
c373b0a4 | 4063 | *p++ = cpu_to_be32(sess->back_channel.rdma_attrs); |
ec6b5d7b AA |
4064 | } |
4065 | return 0; | |
2db134eb AA |
4066 | } |
4067 | ||
c47d832b | 4068 | static __be32 |
57b7b43b | 4069 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
4070 | struct nfsd4_sequence *seq) |
4071 | { | |
d0a381dd | 4072 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 4073 | __be32 *p; |
b85d4c01 | 4074 | |
d0a381dd BF |
4075 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 20); |
4076 | if (!p) | |
4077 | return nfserr_resource; | |
0c0c267b BF |
4078 | p = xdr_encode_opaque_fixed(p, seq->sessionid.data, |
4079 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
4080 | *p++ = cpu_to_be32(seq->seqid); |
4081 | *p++ = cpu_to_be32(seq->slotid); | |
b7d7ca35 | 4082 | /* Note slotid's are numbered from zero: */ |
c373b0a4 BF |
4083 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_highest_slotid */ |
4084 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_target_highest_slotid */ | |
4085 | *p++ = cpu_to_be32(seq->status_flags); | |
b85d4c01 | 4086 | |
f5236013 | 4087 | resp->cstate.data_offset = xdr->buf->len; /* DRC cache data pointer */ |
b85d4c01 | 4088 | return 0; |
2db134eb AA |
4089 | } |
4090 | ||
2355c596 | 4091 | static __be32 |
57b7b43b | 4092 | nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
17456804 BS |
4093 | struct nfsd4_test_stateid *test_stateid) |
4094 | { | |
d0a381dd | 4095 | struct xdr_stream *xdr = &resp->xdr; |
03cfb420 | 4096 | struct nfsd4_test_stateid_id *stateid, *next; |
17456804 | 4097 | __be32 *p; |
17456804 | 4098 | |
d0a381dd BF |
4099 | p = xdr_reserve_space(xdr, 4 + (4 * test_stateid->ts_num_ids)); |
4100 | if (!p) | |
4101 | return nfserr_resource; | |
17456804 | 4102 | *p++ = htonl(test_stateid->ts_num_ids); |
17456804 | 4103 | |
03cfb420 | 4104 | list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) { |
02f5fde5 | 4105 | *p++ = stateid->ts_id_status; |
17456804 | 4106 | } |
17456804 | 4107 | |
bac966d6 | 4108 | return 0; |
17456804 BS |
4109 | } |
4110 | ||
9cf514cc CH |
4111 | #ifdef CONFIG_NFSD_PNFS |
4112 | static __be32 | |
4113 | nfsd4_encode_getdeviceinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4114 | struct nfsd4_getdeviceinfo *gdev) | |
4115 | { | |
4116 | struct xdr_stream *xdr = &resp->xdr; | |
f961e3f2 | 4117 | const struct nfsd4_layout_ops *ops; |
9cf514cc CH |
4118 | u32 starting_len = xdr->buf->len, needed_len; |
4119 | __be32 *p; | |
4120 | ||
9cf514cc CH |
4121 | p = xdr_reserve_space(xdr, 4); |
4122 | if (!p) | |
bac966d6 | 4123 | return nfserr_resource; |
9cf514cc CH |
4124 | |
4125 | *p++ = cpu_to_be32(gdev->gd_layout_type); | |
4126 | ||
4127 | /* If maxcount is 0 then just update notifications */ | |
4128 | if (gdev->gd_maxcount != 0) { | |
f961e3f2 | 4129 | ops = nfsd4_layout_ops[gdev->gd_layout_type]; |
9cf514cc CH |
4130 | nfserr = ops->encode_getdeviceinfo(xdr, gdev); |
4131 | if (nfserr) { | |
4132 | /* | |
4133 | * We don't bother to burden the layout drivers with | |
4134 | * enforcing gd_maxcount, just tell the client to | |
4135 | * come back with a bigger buffer if it's not enough. | |
4136 | */ | |
4137 | if (xdr->buf->len + 4 > gdev->gd_maxcount) | |
4138 | goto toosmall; | |
bac966d6 | 4139 | return nfserr; |
9cf514cc CH |
4140 | } |
4141 | } | |
4142 | ||
9cf514cc CH |
4143 | if (gdev->gd_notify_types) { |
4144 | p = xdr_reserve_space(xdr, 4 + 4); | |
4145 | if (!p) | |
bac966d6 | 4146 | return nfserr_resource; |
9cf514cc CH |
4147 | *p++ = cpu_to_be32(1); /* bitmap length */ |
4148 | *p++ = cpu_to_be32(gdev->gd_notify_types); | |
4149 | } else { | |
4150 | p = xdr_reserve_space(xdr, 4); | |
4151 | if (!p) | |
bac966d6 | 4152 | return nfserr_resource; |
9cf514cc CH |
4153 | *p++ = 0; |
4154 | } | |
4155 | ||
bac966d6 | 4156 | return 0; |
9cf514cc CH |
4157 | toosmall: |
4158 | dprintk("%s: maxcount too small\n", __func__); | |
4159 | needed_len = xdr->buf->len + 4 /* notifications */; | |
4160 | xdr_truncate_encode(xdr, starting_len); | |
4161 | p = xdr_reserve_space(xdr, 4); | |
bac966d6 BF |
4162 | if (!p) |
4163 | return nfserr_resource; | |
4164 | *p++ = cpu_to_be32(needed_len); | |
4165 | return nfserr_toosmall; | |
9cf514cc CH |
4166 | } |
4167 | ||
4168 | static __be32 | |
4169 | nfsd4_encode_layoutget(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4170 | struct nfsd4_layoutget *lgp) | |
4171 | { | |
4172 | struct xdr_stream *xdr = &resp->xdr; | |
f961e3f2 | 4173 | const struct nfsd4_layout_ops *ops; |
9cf514cc CH |
4174 | __be32 *p; |
4175 | ||
9cf514cc CH |
4176 | p = xdr_reserve_space(xdr, 36 + sizeof(stateid_opaque_t)); |
4177 | if (!p) | |
bac966d6 | 4178 | return nfserr_resource; |
9cf514cc CH |
4179 | |
4180 | *p++ = cpu_to_be32(1); /* we always set return-on-close */ | |
4181 | *p++ = cpu_to_be32(lgp->lg_sid.si_generation); | |
4182 | p = xdr_encode_opaque_fixed(p, &lgp->lg_sid.si_opaque, | |
4183 | sizeof(stateid_opaque_t)); | |
4184 | ||
4185 | *p++ = cpu_to_be32(1); /* we always return a single layout */ | |
4186 | p = xdr_encode_hyper(p, lgp->lg_seg.offset); | |
4187 | p = xdr_encode_hyper(p, lgp->lg_seg.length); | |
4188 | *p++ = cpu_to_be32(lgp->lg_seg.iomode); | |
4189 | *p++ = cpu_to_be32(lgp->lg_layout_type); | |
4190 | ||
f961e3f2 | 4191 | ops = nfsd4_layout_ops[lgp->lg_layout_type]; |
bac966d6 | 4192 | return ops->encode_layoutget(xdr, lgp); |
9cf514cc CH |
4193 | } |
4194 | ||
4195 | static __be32 | |
4196 | nfsd4_encode_layoutcommit(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4197 | struct nfsd4_layoutcommit *lcp) | |
4198 | { | |
4199 | struct xdr_stream *xdr = &resp->xdr; | |
4200 | __be32 *p; | |
4201 | ||
9cf514cc CH |
4202 | p = xdr_reserve_space(xdr, 4); |
4203 | if (!p) | |
4204 | return nfserr_resource; | |
4205 | *p++ = cpu_to_be32(lcp->lc_size_chg); | |
4206 | if (lcp->lc_size_chg) { | |
4207 | p = xdr_reserve_space(xdr, 8); | |
4208 | if (!p) | |
4209 | return nfserr_resource; | |
4210 | p = xdr_encode_hyper(p, lcp->lc_newsize); | |
4211 | } | |
4212 | ||
bac966d6 | 4213 | return 0; |
9cf514cc CH |
4214 | } |
4215 | ||
4216 | static __be32 | |
4217 | nfsd4_encode_layoutreturn(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4218 | struct nfsd4_layoutreturn *lrp) | |
4219 | { | |
4220 | struct xdr_stream *xdr = &resp->xdr; | |
4221 | __be32 *p; | |
4222 | ||
9cf514cc CH |
4223 | p = xdr_reserve_space(xdr, 4); |
4224 | if (!p) | |
4225 | return nfserr_resource; | |
4226 | *p++ = cpu_to_be32(lrp->lrs_present); | |
4227 | if (lrp->lrs_present) | |
376675da | 4228 | return nfsd4_encode_stateid(xdr, &lrp->lr_sid); |
bac966d6 | 4229 | return 0; |
9cf514cc CH |
4230 | } |
4231 | #endif /* CONFIG_NFSD_PNFS */ | |
4232 | ||
29ae7f9d AS |
4233 | static __be32 |
4234 | nfsd42_encode_write_res(struct nfsd4_compoundres *resp, struct nfsd42_write_res *write) | |
4235 | { | |
4236 | __be32 *p; | |
4237 | ||
4238 | p = xdr_reserve_space(&resp->xdr, 4 + 8 + 4 + NFS4_VERIFIER_SIZE); | |
4239 | if (!p) | |
4240 | return nfserr_resource; | |
4241 | ||
4242 | *p++ = cpu_to_be32(0); | |
4243 | p = xdr_encode_hyper(p, write->wr_bytes_written); | |
4244 | *p++ = cpu_to_be32(write->wr_stable_how); | |
4245 | p = xdr_encode_opaque_fixed(p, write->wr_verifier.data, | |
4246 | NFS4_VERIFIER_SIZE); | |
4247 | return nfs_ok; | |
4248 | } | |
4249 | ||
4250 | static __be32 | |
4251 | nfsd4_encode_copy(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4252 | struct nfsd4_copy *copy) | |
4253 | { | |
4254 | __be32 *p; | |
4255 | ||
bac966d6 BF |
4256 | nfserr = nfsd42_encode_write_res(resp, ©->cp_res); |
4257 | if (nfserr) | |
4258 | return nfserr; | |
29ae7f9d | 4259 | |
bac966d6 | 4260 | p = xdr_reserve_space(&resp->xdr, 4 + 4); |
edcc8452 | 4261 | *p++ = xdr_one; /* cr_consecutive */ |
bac966d6 BF |
4262 | *p++ = cpu_to_be32(copy->cp_synchronous); |
4263 | return 0; | |
29ae7f9d AS |
4264 | } |
4265 | ||
6308bc98 OK |
4266 | static __be32 |
4267 | nfsd4_encode_offload_status(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4268 | struct nfsd4_offload_status *os) | |
4269 | { | |
4270 | struct xdr_stream *xdr = &resp->xdr; | |
4271 | __be32 *p; | |
4272 | ||
4273 | p = xdr_reserve_space(xdr, 8 + 4); | |
4274 | if (!p) | |
4275 | return nfserr_resource; | |
4276 | p = xdr_encode_hyper(p, os->count); | |
4277 | *p++ = cpu_to_be32(0); | |
4278 | ||
4279 | return nfserr; | |
4280 | } | |
4281 | ||
24bab491 AS |
4282 | static __be32 |
4283 | nfsd4_encode_seek(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4284 | struct nfsd4_seek *seek) | |
4285 | { | |
4286 | __be32 *p; | |
4287 | ||
24bab491 AS |
4288 | p = xdr_reserve_space(&resp->xdr, 4 + 8); |
4289 | *p++ = cpu_to_be32(seek->seek_eof); | |
4290 | p = xdr_encode_hyper(p, seek->seek_pos); | |
4291 | ||
bac966d6 | 4292 | return 0; |
24bab491 AS |
4293 | } |
4294 | ||
695e12f8 BH |
4295 | static __be32 |
4296 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
4297 | { | |
4298 | return nfserr; | |
4299 | } | |
4300 | ||
4301 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
4302 | ||
2db134eb AA |
4303 | /* |
4304 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
4305 | * since we don't need to filter out obsolete ops as this is | |
4306 | * done in the decoding phase. | |
4307 | */ | |
c1df609d | 4308 | static const nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
4309 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
4310 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
4311 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
4312 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
4313 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
4314 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
4315 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
4316 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
4317 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
4318 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
4319 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
4320 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
4321 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
4322 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
4323 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
4324 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 4325 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
4326 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
4327 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
4328 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4329 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4330 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4331 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
4332 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
4333 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
4334 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
4335 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
4336 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
4337 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4338 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4339 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
4340 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
4341 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
4342 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
4343 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
4344 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
4345 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
4346 | |
4347 | /* NFSv4.1 operations */ | |
4348 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
1d1bc8f2 | 4349 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
2db134eb AA |
4350 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
4351 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
43212cc7 KM |
4352 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_noop, |
4353 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb | 4354 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
9cf514cc CH |
4355 | #ifdef CONFIG_NFSD_PNFS |
4356 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_getdeviceinfo, | |
4357 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
4358 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_layoutcommit, | |
4359 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_layoutget, | |
4360 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_layoutreturn, | |
4361 | #else | |
2db134eb AA |
4362 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, |
4363 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
4364 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
4365 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
4366 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
9cf514cc | 4367 | #endif |
22b6dee8 | 4368 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
2db134eb AA |
4369 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
4370 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
17456804 | 4371 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, |
2db134eb AA |
4372 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
4373 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
4374 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
87a15a80 AS |
4375 | |
4376 | /* NFSv4.2 operations */ | |
4377 | [OP_ALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, | |
29ae7f9d | 4378 | [OP_COPY] = (nfsd4_enc)nfsd4_encode_copy, |
87a15a80 AS |
4379 | [OP_COPY_NOTIFY] = (nfsd4_enc)nfsd4_encode_noop, |
4380 | [OP_DEALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, | |
4381 | [OP_IO_ADVISE] = (nfsd4_enc)nfsd4_encode_noop, | |
4382 | [OP_LAYOUTERROR] = (nfsd4_enc)nfsd4_encode_noop, | |
4383 | [OP_LAYOUTSTATS] = (nfsd4_enc)nfsd4_encode_noop, | |
4384 | [OP_OFFLOAD_CANCEL] = (nfsd4_enc)nfsd4_encode_noop, | |
6308bc98 | 4385 | [OP_OFFLOAD_STATUS] = (nfsd4_enc)nfsd4_encode_offload_status, |
87a15a80 | 4386 | [OP_READ_PLUS] = (nfsd4_enc)nfsd4_encode_noop, |
24bab491 | 4387 | [OP_SEEK] = (nfsd4_enc)nfsd4_encode_seek, |
87a15a80 | 4388 | [OP_WRITE_SAME] = (nfsd4_enc)nfsd4_encode_noop, |
ffa0160a | 4389 | [OP_CLONE] = (nfsd4_enc)nfsd4_encode_noop, |
695e12f8 BH |
4390 | }; |
4391 | ||
496c262c | 4392 | /* |
a8095f7e BF |
4393 | * Calculate whether we still have space to encode repsize bytes. |
4394 | * There are two considerations: | |
4395 | * - For NFS versions >=4.1, the size of the reply must stay within | |
4396 | * session limits | |
4397 | * - For all NFS versions, we must stay within limited preallocated | |
4398 | * buffer space. | |
496c262c | 4399 | * |
a8095f7e BF |
4400 | * This is called before the operation is processed, so can only provide |
4401 | * an upper estimate. For some nonidempotent operations (such as | |
4402 | * getattr), it's not necessarily a problem if that estimate is wrong, | |
4403 | * as we can fail it after processing without significant side effects. | |
496c262c | 4404 | */ |
a8095f7e | 4405 | __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 respsize) |
496c262c | 4406 | { |
67492c99 | 4407 | struct xdr_buf *buf = &resp->rqstp->rq_res; |
47ee5298 | 4408 | struct nfsd4_slot *slot = resp->cstate.slot; |
496c262c | 4409 | |
47ee5298 BF |
4410 | if (buf->len + respsize <= buf->buflen) |
4411 | return nfs_ok; | |
4412 | if (!nfsd4_has_session(&resp->cstate)) | |
ea8d7720 | 4413 | return nfserr_resource; |
47ee5298 BF |
4414 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) { |
4415 | WARN_ON_ONCE(1); | |
4416 | return nfserr_rep_too_big_to_cache; | |
ea8d7720 | 4417 | } |
47ee5298 | 4418 | return nfserr_rep_too_big; |
496c262c AA |
4419 | } |
4420 | ||
1da177e4 LT |
4421 | void |
4422 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
4423 | { | |
082d4bd7 | 4424 | struct xdr_stream *xdr = &resp->xdr; |
9411b1d4 | 4425 | struct nfs4_stateowner *so = resp->cstate.replay_owner; |
5f4ab945 | 4426 | struct svc_rqst *rqstp = resp->rqstp; |
34b1744c | 4427 | const struct nfsd4_operation *opdesc = op->opdesc; |
082d4bd7 | 4428 | int post_err_offset; |
07d1f802 | 4429 | nfsd4_enc encoder; |
bc749ca4 | 4430 | __be32 *p; |
1da177e4 | 4431 | |
d0a381dd BF |
4432 | p = xdr_reserve_space(xdr, 8); |
4433 | if (!p) { | |
4434 | WARN_ON_ONCE(1); | |
4435 | return; | |
4436 | } | |
c373b0a4 | 4437 | *p++ = cpu_to_be32(op->opnum); |
082d4bd7 | 4438 | post_err_offset = xdr->buf->len; |
1da177e4 | 4439 | |
695e12f8 BH |
4440 | if (op->opnum == OP_ILLEGAL) |
4441 | goto status; | |
b7571e4c BF |
4442 | if (op->status && opdesc && |
4443 | !(opdesc->op_flags & OP_NONTRIVIAL_ERROR_ENCODE)) | |
4444 | goto status; | |
695e12f8 BH |
4445 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || |
4446 | !nfsd4_enc_ops[op->opnum]); | |
07d1f802 BF |
4447 | encoder = nfsd4_enc_ops[op->opnum]; |
4448 | op->status = encoder(resp, op->status, &op->u); | |
34b1744c BF |
4449 | if (opdesc && opdesc->op_release) |
4450 | opdesc->op_release(&op->u); | |
2825a7f9 BF |
4451 | xdr_commit_encode(xdr); |
4452 | ||
067e1ace | 4453 | /* nfsd4_check_resp_size guarantees enough room for error status */ |
5f4ab945 BF |
4454 | if (!op->status) { |
4455 | int space_needed = 0; | |
4456 | if (!nfsd4_last_compound_op(rqstp)) | |
4457 | space_needed = COMPOUND_ERR_SLACK_SPACE; | |
4458 | op->status = nfsd4_check_resp_size(resp, space_needed); | |
4459 | } | |
c8f13d97 BF |
4460 | if (op->status == nfserr_resource && nfsd4_has_session(&resp->cstate)) { |
4461 | struct nfsd4_slot *slot = resp->cstate.slot; | |
4462 | ||
4463 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) | |
4464 | op->status = nfserr_rep_too_big_to_cache; | |
4465 | else | |
4466 | op->status = nfserr_rep_too_big; | |
4467 | } | |
07d1f802 BF |
4468 | if (op->status == nfserr_resource || |
4469 | op->status == nfserr_rep_too_big || | |
4470 | op->status == nfserr_rep_too_big_to_cache) { | |
4471 | /* | |
4472 | * The operation may have already been encoded or | |
4473 | * partially encoded. No op returns anything additional | |
4474 | * in the case of one of these three errors, so we can | |
4475 | * just truncate back to after the status. But it's a | |
4476 | * bug if we had to do this on a non-idempotent op: | |
4477 | */ | |
4478 | warn_on_nonidempotent_op(op); | |
082d4bd7 | 4479 | xdr_truncate_encode(xdr, post_err_offset); |
07d1f802 | 4480 | } |
9411b1d4 | 4481 | if (so) { |
082d4bd7 BF |
4482 | int len = xdr->buf->len - post_err_offset; |
4483 | ||
9411b1d4 | 4484 | so->so_replay.rp_status = op->status; |
082d4bd7 BF |
4485 | so->so_replay.rp_buflen = len; |
4486 | read_bytes_from_xdr_buf(xdr->buf, post_err_offset, | |
4487 | so->so_replay.rp_buf, len); | |
9411b1d4 | 4488 | } |
695e12f8 | 4489 | status: |
082d4bd7 BF |
4490 | /* Note that op->status is already in network byte order: */ |
4491 | write_bytes_to_xdr_buf(xdr->buf, post_err_offset - 4, &op->status, 4); | |
1da177e4 LT |
4492 | } |
4493 | ||
4494 | /* | |
4495 | * Encode the reply stored in the stateowner reply cache | |
4496 | * | |
4497 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
4498 | * previously sent already encoded operation. | |
1da177e4 LT |
4499 | */ |
4500 | void | |
d0a381dd | 4501 | nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op) |
1da177e4 | 4502 | { |
bc749ca4 | 4503 | __be32 *p; |
1da177e4 LT |
4504 | struct nfs4_replay *rp = op->replay; |
4505 | ||
4506 | BUG_ON(!rp); | |
4507 | ||
d0a381dd BF |
4508 | p = xdr_reserve_space(xdr, 8 + rp->rp_buflen); |
4509 | if (!p) { | |
4510 | WARN_ON_ONCE(1); | |
4511 | return; | |
4512 | } | |
c373b0a4 | 4513 | *p++ = cpu_to_be32(op->opnum); |
1da177e4 | 4514 | *p++ = rp->rp_status; /* already xdr'ed */ |
1da177e4 | 4515 | |
0c0c267b | 4516 | p = xdr_encode_opaque_fixed(p, rp->rp_buf, rp->rp_buflen); |
1da177e4 LT |
4517 | } |
4518 | ||
1da177e4 | 4519 | int |
63f8de37 | 4520 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 LT |
4521 | { |
4522 | return xdr_ressize_check(rqstp, p); | |
4523 | } | |
4524 | ||
8537488b | 4525 | void nfsd4_release_compoundargs(struct svc_rqst *rqstp) |
1da177e4 | 4526 | { |
3e98abff BF |
4527 | struct nfsd4_compoundargs *args = rqstp->rq_argp; |
4528 | ||
1da177e4 LT |
4529 | if (args->ops != args->iops) { |
4530 | kfree(args->ops); | |
4531 | args->ops = args->iops; | |
4532 | } | |
f99d49ad JJ |
4533 | kfree(args->tmpp); |
4534 | args->tmpp = NULL; | |
1da177e4 | 4535 | while (args->to_free) { |
d5e23383 | 4536 | struct svcxdr_tmpbuf *tb = args->to_free; |
1da177e4 | 4537 | args->to_free = tb->next; |
1da177e4 LT |
4538 | kfree(tb); |
4539 | } | |
4540 | } | |
4541 | ||
4542 | int | |
026fec7e | 4543 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 4544 | { |
026fec7e CH |
4545 | struct nfsd4_compoundargs *args = rqstp->rq_argp; |
4546 | ||
e874f9f8 JL |
4547 | if (rqstp->rq_arg.head[0].iov_len % 4) { |
4548 | /* client is nuts */ | |
4549 | dprintk("%s: compound not properly padded! (peeraddr=%pISc xid=0x%x)", | |
4550 | __func__, svc_addr(rqstp), be32_to_cpu(rqstp->rq_xid)); | |
4551 | return 0; | |
4552 | } | |
1da177e4 LT |
4553 | args->p = p; |
4554 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
4555 | args->pagelist = rqstp->rq_arg.pages; | |
4556 | args->pagelen = rqstp->rq_arg.page_len; | |
eae03e2a | 4557 | args->tail = false; |
1da177e4 LT |
4558 | args->tmpp = NULL; |
4559 | args->to_free = NULL; | |
4560 | args->ops = args->iops; | |
4561 | args->rqstp = rqstp; | |
4562 | ||
3e98abff | 4563 | return !nfsd4_decode_compound(args); |
1da177e4 LT |
4564 | } |
4565 | ||
4566 | int | |
63f8de37 | 4567 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 LT |
4568 | { |
4569 | /* | |
4570 | * All that remains is to write the tag and operation count... | |
4571 | */ | |
63f8de37 | 4572 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
6ac90391 BF |
4573 | struct xdr_buf *buf = resp->xdr.buf; |
4574 | ||
4575 | WARN_ON_ONCE(buf->len != buf->head[0].iov_len + buf->page_len + | |
4576 | buf->tail[0].iov_len); | |
dd97fdde | 4577 | |
2825a7f9 BF |
4578 | rqstp->rq_next_page = resp->xdr.page_ptr + 1; |
4579 | ||
1da177e4 LT |
4580 | p = resp->tagp; |
4581 | *p++ = htonl(resp->taglen); | |
4582 | memcpy(p, resp->tag, resp->taglen); | |
4583 | p += XDR_QUADLEN(resp->taglen); | |
4584 | *p++ = htonl(resp->opcnt); | |
4585 | ||
b607664e | 4586 | nfsd4_sequence_done(resp); |
1da177e4 LT |
4587 | return 1; |
4588 | } | |
4589 | ||
4590 | /* | |
4591 | * Local variables: | |
4592 | * c-basic-offset: 8 | |
4593 | * End: | |
4594 | */ |