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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> |
84e1b21d | 43 | #include <linux/sunrpc/addr.h> |
9a74af21 | 44 | |
2ca72e17 BF |
45 | #include "idmap.h" |
46 | #include "acl.h" | |
9a74af21 | 47 | #include "xdr4.h" |
0a3adade | 48 | #include "vfs.h" |
17456804 | 49 | #include "state.h" |
1091006c | 50 | #include "cache.h" |
3d733711 | 51 | #include "netns.h" |
9cf514cc | 52 | #include "pnfs.h" |
5c4583b2 | 53 | #include "filecache.h" |
2ca72e17 | 54 | |
18032ca0 DQ |
55 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
56 | #include <linux/security.h> | |
57 | #endif | |
58 | ||
59 | ||
1da177e4 LT |
60 | #define NFSDDBG_FACILITY NFSDDBG_XDR |
61 | ||
5cf23dbb | 62 | const u32 nfsd_suppattrs[3][3] = { |
916d2d84 BF |
63 | {NFSD4_SUPPORTED_ATTRS_WORD0, |
64 | NFSD4_SUPPORTED_ATTRS_WORD1, | |
65 | NFSD4_SUPPORTED_ATTRS_WORD2}, | |
66 | ||
67 | {NFSD4_1_SUPPORTED_ATTRS_WORD0, | |
68 | NFSD4_1_SUPPORTED_ATTRS_WORD1, | |
69 | NFSD4_1_SUPPORTED_ATTRS_WORD2}, | |
70 | ||
71 | {NFSD4_1_SUPPORTED_ATTRS_WORD0, | |
72 | NFSD4_1_SUPPORTED_ATTRS_WORD1, | |
73 | NFSD4_2_SUPPORTED_ATTRS_WORD2}, | |
74 | }; | |
75 | ||
42ca0993 BF |
76 | /* |
77 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing | |
78 | * directory in order to indicate to the client that a filesystem boundary is present | |
79 | * We use a fixed fsid for a referral | |
80 | */ | |
81 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL | |
82 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL | |
83 | ||
b37ad28b | 84 | static __be32 |
a36b1725 | 85 | check_filename(char *str, int len) |
1da177e4 LT |
86 | { |
87 | int i; | |
88 | ||
89 | if (len == 0) | |
90 | return nfserr_inval; | |
91 | if (isdotent(str, len)) | |
a36b1725 | 92 | return nfserr_badname; |
1da177e4 LT |
93 | for (i = 0; i < len; i++) |
94 | if (str[i] == '/') | |
a36b1725 | 95 | return nfserr_badname; |
1da177e4 LT |
96 | return 0; |
97 | } | |
98 | ||
1da177e4 | 99 | #define DECODE_HEAD \ |
2ebbc012 | 100 | __be32 *p; \ |
b37ad28b | 101 | __be32 status |
1da177e4 LT |
102 | #define DECODE_TAIL \ |
103 | status = 0; \ | |
104 | out: \ | |
105 | return status; \ | |
106 | xdr_error: \ | |
817cb9d4 CL |
107 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
108 | __FILE__, __LINE__); \ | |
1da177e4 LT |
109 | status = nfserr_bad_xdr; \ |
110 | goto out | |
111 | ||
1da177e4 LT |
112 | #define READMEM(x,nbytes) do { \ |
113 | x = (char *)p; \ | |
114 | p += XDR_QUADLEN(nbytes); \ | |
115 | } while (0) | |
116 | #define SAVEMEM(x,nbytes) do { \ | |
117 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
118 | savemem(argp, p, nbytes) : \ | |
119 | (char *)p)) { \ | |
817cb9d4 CL |
120 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
121 | __FILE__, __LINE__); \ | |
1da177e4 LT |
122 | goto xdr_error; \ |
123 | } \ | |
124 | p += XDR_QUADLEN(nbytes); \ | |
125 | } while (0) | |
126 | #define COPYMEM(x,nbytes) do { \ | |
127 | memcpy((x), p, nbytes); \ | |
128 | p += XDR_QUADLEN(nbytes); \ | |
129 | } while (0) | |
130 | ||
131 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ | |
132 | #define READ_BUF(nbytes) do { \ | |
133 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ | |
134 | p = argp->p; \ | |
135 | argp->p += XDR_QUADLEN(nbytes); \ | |
136 | } else if (!(p = read_buf(argp, nbytes))) { \ | |
817cb9d4 CL |
137 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
138 | __FILE__, __LINE__); \ | |
1da177e4 LT |
139 | goto xdr_error; \ |
140 | } \ | |
141 | } while (0) | |
142 | ||
590b7431 BF |
143 | static void next_decode_page(struct nfsd4_compoundargs *argp) |
144 | { | |
590b7431 | 145 | argp->p = page_address(argp->pagelist[0]); |
365da4ad | 146 | argp->pagelist++; |
590b7431 | 147 | if (argp->pagelen < PAGE_SIZE) { |
fc788f64 | 148 | argp->end = argp->p + XDR_QUADLEN(argp->pagelen); |
590b7431 BF |
149 | argp->pagelen = 0; |
150 | } else { | |
151 | argp->end = argp->p + (PAGE_SIZE>>2); | |
152 | argp->pagelen -= PAGE_SIZE; | |
153 | } | |
154 | } | |
155 | ||
ca2a05aa | 156 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
1da177e4 LT |
157 | { |
158 | /* We want more bytes than seem to be available. | |
159 | * Maybe we need a new page, maybe we have just run out | |
160 | */ | |
ca2a05aa | 161 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
2ebbc012 | 162 | __be32 *p; |
eae03e2a CL |
163 | |
164 | if (argp->pagelen == 0) { | |
165 | struct kvec *vec = &argp->rqstp->rq_arg.tail[0]; | |
166 | ||
167 | if (!argp->tail) { | |
168 | argp->tail = true; | |
169 | avail = vec->iov_len; | |
170 | argp->p = vec->iov_base; | |
171 | argp->end = vec->iov_base + avail; | |
172 | } | |
173 | ||
174 | if (avail < nbytes) | |
175 | return NULL; | |
176 | ||
177 | p = argp->p; | |
178 | argp->p += XDR_QUADLEN(nbytes); | |
179 | return p; | |
180 | } | |
181 | ||
1da177e4 LT |
182 | if (avail + argp->pagelen < nbytes) |
183 | return NULL; | |
184 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ | |
185 | return NULL; | |
186 | /* ok, we can do it with the current plus the next page */ | |
187 | if (nbytes <= sizeof(argp->tmp)) | |
188 | p = argp->tmp; | |
189 | else { | |
f99d49ad | 190 | kfree(argp->tmpp); |
1da177e4 LT |
191 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
192 | if (!p) | |
193 | return NULL; | |
194 | ||
195 | } | |
ca2a05aa BF |
196 | /* |
197 | * The following memcpy is safe because read_buf is always | |
198 | * called with nbytes > avail, and the two cases above both | |
199 | * guarantee p points to at least nbytes bytes. | |
200 | */ | |
1da177e4 | 201 | memcpy(p, argp->p, avail); |
590b7431 | 202 | next_decode_page(argp); |
1da177e4 LT |
203 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); |
204 | argp->p += XDR_QUADLEN(nbytes - avail); | |
205 | return p; | |
206 | } | |
207 | ||
2b86e3aa BF |
208 | static unsigned int compoundargs_bytes_left(struct nfsd4_compoundargs *argp) |
209 | { | |
210 | unsigned int this = (char *)argp->end - (char *)argp->p; | |
211 | ||
212 | return this + argp->pagelen; | |
213 | } | |
214 | ||
60adfc50 AA |
215 | static int zero_clientid(clientid_t *clid) |
216 | { | |
217 | return (clid->cl_boot == 0) && (clid->cl_id == 0); | |
218 | } | |
219 | ||
2d8498db | 220 | /** |
d5e23383 | 221 | * svcxdr_tmpalloc - allocate memory to be freed after compound processing |
ce043ac8 | 222 | * @argp: NFSv4 compound argument structure |
ed992753 | 223 | * @len: length of buffer to allocate |
2d8498db | 224 | * |
ed992753 TM |
225 | * Allocates a buffer of size @len to be freed when processing the compound |
226 | * operation described in @argp finishes. | |
2d8498db | 227 | */ |
d5e23383 BF |
228 | static void * |
229 | svcxdr_tmpalloc(struct nfsd4_compoundargs *argp, u32 len) | |
1da177e4 | 230 | { |
d5e23383 | 231 | struct svcxdr_tmpbuf *tb; |
1da177e4 | 232 | |
d5e23383 | 233 | tb = kmalloc(sizeof(*tb) + len, GFP_KERNEL); |
1da177e4 | 234 | if (!tb) |
d5e23383 | 235 | return NULL; |
1da177e4 LT |
236 | tb->next = argp->to_free; |
237 | argp->to_free = tb; | |
d5e23383 | 238 | return tb->buf; |
1da177e4 LT |
239 | } |
240 | ||
29c353b3 BF |
241 | /* |
242 | * For xdr strings that need to be passed to other kernel api's | |
243 | * as null-terminated strings. | |
244 | * | |
245 | * Note null-terminating in place usually isn't safe since the | |
246 | * buffer might end on a page boundary. | |
247 | */ | |
248 | static char * | |
249 | svcxdr_dupstr(struct nfsd4_compoundargs *argp, void *buf, u32 len) | |
250 | { | |
d5e23383 | 251 | char *p = svcxdr_tmpalloc(argp, len + 1); |
29c353b3 BF |
252 | |
253 | if (!p) | |
254 | return NULL; | |
255 | memcpy(p, buf, len); | |
256 | p[len] = '\0'; | |
29c353b3 | 257 | return p; |
1da177e4 LT |
258 | } |
259 | ||
2d8498db CH |
260 | /** |
261 | * savemem - duplicate a chunk of memory for later processing | |
262 | * @argp: NFSv4 compound argument structure to be freed with | |
263 | * @p: pointer to be duplicated | |
264 | * @nbytes: length to be duplicated | |
265 | * | |
266 | * Returns a pointer to a copy of @nbytes bytes of memory at @p | |
267 | * that are preserved until processing of the NFSv4 compound | |
268 | * operation described by @argp finishes. | |
269 | */ | |
2ebbc012 | 270 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
1da177e4 | 271 | { |
d5e23383 BF |
272 | void *ret; |
273 | ||
274 | ret = svcxdr_tmpalloc(argp, nbytes); | |
275 | if (!ret) | |
1da177e4 | 276 | return NULL; |
d5e23383 BF |
277 | memcpy(ret, p, nbytes); |
278 | return ret; | |
1da177e4 LT |
279 | } |
280 | ||
4c94e13e | 281 | static __be32 |
bdba5368 | 282 | nfsd4_decode_time(struct nfsd4_compoundargs *argp, struct timespec64 *tv) |
4c94e13e CH |
283 | { |
284 | DECODE_HEAD; | |
4c94e13e CH |
285 | |
286 | READ_BUF(12); | |
bdba5368 | 287 | p = xdr_decode_hyper(p, &tv->tv_sec); |
4c94e13e CH |
288 | tv->tv_nsec = be32_to_cpup(p++); |
289 | if (tv->tv_nsec >= (u32)1000000000) | |
290 | return nfserr_inval; | |
291 | ||
292 | DECODE_TAIL; | |
293 | } | |
294 | ||
b37ad28b | 295 | static __be32 |
1da177e4 LT |
296 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
297 | { | |
298 | u32 bmlen; | |
299 | DECODE_HEAD; | |
300 | ||
301 | bmval[0] = 0; | |
302 | bmval[1] = 0; | |
7e705706 | 303 | bmval[2] = 0; |
1da177e4 LT |
304 | |
305 | READ_BUF(4); | |
06553991 | 306 | bmlen = be32_to_cpup(p++); |
1da177e4 LT |
307 | if (bmlen > 1000) |
308 | goto xdr_error; | |
309 | ||
310 | READ_BUF(bmlen << 2); | |
311 | if (bmlen > 0) | |
06553991 | 312 | bmval[0] = be32_to_cpup(p++); |
1da177e4 | 313 | if (bmlen > 1) |
06553991 | 314 | bmval[1] = be32_to_cpup(p++); |
7e705706 | 315 | if (bmlen > 2) |
06553991 | 316 | bmval[2] = be32_to_cpup(p++); |
1da177e4 LT |
317 | |
318 | DECODE_TAIL; | |
319 | } | |
320 | ||
b37ad28b | 321 | static __be32 |
3c8e0316 | 322 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, |
18032ca0 | 323 | struct iattr *iattr, struct nfs4_acl **acl, |
47057abd | 324 | struct xdr_netobj *label, int *umask) |
1da177e4 LT |
325 | { |
326 | int expected_len, len = 0; | |
327 | u32 dummy32; | |
328 | char *buf; | |
329 | ||
330 | DECODE_HEAD; | |
331 | iattr->ia_valid = 0; | |
332 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
333 | return status; | |
334 | ||
e864c189 BF |
335 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
336 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 | |
337 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) { | |
338 | if (nfsd_attrs_supported(argp->minorversion, bmval)) | |
339 | return nfserr_inval; | |
340 | return nfserr_attrnotsupp; | |
341 | } | |
342 | ||
1da177e4 | 343 | READ_BUF(4); |
06553991 | 344 | expected_len = be32_to_cpup(p++); |
1da177e4 LT |
345 | |
346 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
347 | READ_BUF(8); | |
348 | len += 8; | |
542d1ab3 | 349 | p = xdr_decode_hyper(p, &iattr->ia_size); |
1da177e4 LT |
350 | iattr->ia_valid |= ATTR_SIZE; |
351 | } | |
352 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
64a817cf | 353 | u32 nace; |
28e05dd8 | 354 | struct nfs4_ace *ace; |
1da177e4 LT |
355 | |
356 | READ_BUF(4); len += 4; | |
06553991 | 357 | nace = be32_to_cpup(p++); |
1da177e4 | 358 | |
2b86e3aa BF |
359 | if (nace > compoundargs_bytes_left(argp)/20) |
360 | /* | |
361 | * Even with 4-byte names there wouldn't be | |
362 | * space for that many aces; something fishy is | |
363 | * going on: | |
364 | */ | |
798df338 | 365 | return nfserr_fbig; |
28e05dd8 | 366 | |
d5e23383 | 367 | *acl = svcxdr_tmpalloc(argp, nfs4_acl_bytes(nace)); |
eba1c99c KM |
368 | if (*acl == NULL) |
369 | return nfserr_jukebox; | |
370 | ||
28e05dd8 BF |
371 | (*acl)->naces = nace; |
372 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { | |
1da177e4 | 373 | READ_BUF(16); len += 16; |
06553991 BF |
374 | ace->type = be32_to_cpup(p++); |
375 | ace->flag = be32_to_cpup(p++); | |
376 | ace->access_mask = be32_to_cpup(p++); | |
377 | dummy32 = be32_to_cpup(p++); | |
1da177e4 LT |
378 | READ_BUF(dummy32); |
379 | len += XDR_QUADLEN(dummy32) << 2; | |
380 | READMEM(buf, dummy32); | |
28e05dd8 | 381 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
3c726023 | 382 | status = nfs_ok; |
28e05dd8 | 383 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ab8e4aee | 384 | ; |
28e05dd8 | 385 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
3c726023 | 386 | status = nfsd_map_name_to_gid(argp->rqstp, |
ab8e4aee | 387 | buf, dummy32, &ace->who_gid); |
1da177e4 | 388 | else |
3c726023 | 389 | status = nfsd_map_name_to_uid(argp->rqstp, |
ab8e4aee | 390 | buf, dummy32, &ace->who_uid); |
3c726023 BF |
391 | if (status) |
392 | return status; | |
1da177e4 LT |
393 | } |
394 | } else | |
395 | *acl = NULL; | |
396 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
397 | READ_BUF(4); | |
398 | len += 4; | |
06553991 | 399 | iattr->ia_mode = be32_to_cpup(p++); |
1da177e4 LT |
400 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); |
401 | iattr->ia_valid |= ATTR_MODE; | |
402 | } | |
403 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
404 | READ_BUF(4); | |
405 | len += 4; | |
06553991 | 406 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
407 | READ_BUF(dummy32); |
408 | len += (XDR_QUADLEN(dummy32) << 2); | |
409 | READMEM(buf, dummy32); | |
47c85291 N |
410 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
411 | return status; | |
1da177e4 LT |
412 | iattr->ia_valid |= ATTR_UID; |
413 | } | |
414 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
415 | READ_BUF(4); | |
416 | len += 4; | |
06553991 | 417 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
418 | READ_BUF(dummy32); |
419 | len += (XDR_QUADLEN(dummy32) << 2); | |
420 | READMEM(buf, dummy32); | |
47c85291 N |
421 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
422 | return status; | |
1da177e4 LT |
423 | iattr->ia_valid |= ATTR_GID; |
424 | } | |
425 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
426 | READ_BUF(4); | |
427 | len += 4; | |
06553991 | 428 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
429 | switch (dummy32) { |
430 | case NFS4_SET_TO_CLIENT_TIME: | |
1da177e4 | 431 | len += 12; |
bdba5368 | 432 | status = nfsd4_decode_time(argp, &iattr->ia_atime); |
4c94e13e CH |
433 | if (status) |
434 | return status; | |
1da177e4 LT |
435 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); |
436 | break; | |
437 | case NFS4_SET_TO_SERVER_TIME: | |
438 | iattr->ia_valid |= ATTR_ATIME; | |
439 | break; | |
440 | default: | |
441 | goto xdr_error; | |
442 | } | |
443 | } | |
1da177e4 LT |
444 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
445 | READ_BUF(4); | |
446 | len += 4; | |
06553991 | 447 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
448 | switch (dummy32) { |
449 | case NFS4_SET_TO_CLIENT_TIME: | |
1da177e4 | 450 | len += 12; |
bdba5368 | 451 | status = nfsd4_decode_time(argp, &iattr->ia_mtime); |
4c94e13e CH |
452 | if (status) |
453 | return status; | |
1da177e4 LT |
454 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); |
455 | break; | |
456 | case NFS4_SET_TO_SERVER_TIME: | |
457 | iattr->ia_valid |= ATTR_MTIME; | |
458 | break; | |
459 | default: | |
460 | goto xdr_error; | |
461 | } | |
462 | } | |
18032ca0 DQ |
463 | |
464 | label->len = 0; | |
2285ae76 AB |
465 | if (IS_ENABLED(CONFIG_NFSD_V4_SECURITY_LABEL) && |
466 | bmval[2] & FATTR4_WORD2_SECURITY_LABEL) { | |
18032ca0 DQ |
467 | READ_BUF(4); |
468 | len += 4; | |
06553991 | 469 | dummy32 = be32_to_cpup(p++); /* lfs: we don't use it */ |
18032ca0 DQ |
470 | READ_BUF(4); |
471 | len += 4; | |
06553991 | 472 | dummy32 = be32_to_cpup(p++); /* pi: we don't use it either */ |
18032ca0 DQ |
473 | READ_BUF(4); |
474 | len += 4; | |
06553991 | 475 | dummy32 = be32_to_cpup(p++); |
18032ca0 | 476 | READ_BUF(dummy32); |
1ec8c0c4 | 477 | if (dummy32 > NFS4_MAXLABELLEN) |
18032ca0 DQ |
478 | return nfserr_badlabel; |
479 | len += (XDR_QUADLEN(dummy32) << 2); | |
480 | READMEM(buf, dummy32); | |
29c353b3 BF |
481 | label->len = dummy32; |
482 | label->data = svcxdr_dupstr(argp, buf, dummy32); | |
18032ca0 DQ |
483 | if (!label->data) |
484 | return nfserr_jukebox; | |
18032ca0 | 485 | } |
47057abd AG |
486 | if (bmval[2] & FATTR4_WORD2_MODE_UMASK) { |
487 | if (!umask) | |
488 | goto xdr_error; | |
489 | READ_BUF(8); | |
490 | len += 8; | |
491 | dummy32 = be32_to_cpup(p++); | |
492 | iattr->ia_mode = dummy32 & (S_IFMT | S_IALLUGO); | |
493 | dummy32 = be32_to_cpup(p++); | |
494 | *umask = dummy32 & S_IRWXUGO; | |
495 | iattr->ia_valid |= ATTR_MODE; | |
496 | } | |
e864c189 | 497 | if (len != expected_len) |
1da177e4 LT |
498 | goto xdr_error; |
499 | ||
500 | DECODE_TAIL; | |
1da177e4 LT |
501 | } |
502 | ||
e31a1b66 BH |
503 | static __be32 |
504 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
505 | { | |
506 | DECODE_HEAD; | |
507 | ||
508 | READ_BUF(sizeof(stateid_t)); | |
06553991 | 509 | sid->si_generation = be32_to_cpup(p++); |
e31a1b66 BH |
510 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); |
511 | ||
512 | DECODE_TAIL; | |
513 | } | |
514 | ||
b37ad28b | 515 | static __be32 |
1da177e4 LT |
516 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
517 | { | |
518 | DECODE_HEAD; | |
519 | ||
520 | READ_BUF(4); | |
06553991 | 521 | access->ac_req_access = be32_to_cpup(p++); |
1da177e4 LT |
522 | |
523 | DECODE_TAIL; | |
524 | } | |
525 | ||
acb2887e BF |
526 | static __be32 nfsd4_decode_cb_sec(struct nfsd4_compoundargs *argp, struct nfsd4_cb_sec *cbs) |
527 | { | |
528 | DECODE_HEAD; | |
e45d1a18 | 529 | struct user_namespace *userns = nfsd_user_namespace(argp->rqstp); |
12fc3e92 | 530 | u32 dummy, uid, gid; |
acb2887e BF |
531 | char *machine_name; |
532 | int i; | |
533 | int nr_secflavs; | |
534 | ||
535 | /* callback_sec_params4 */ | |
536 | READ_BUF(4); | |
06553991 | 537 | nr_secflavs = be32_to_cpup(p++); |
57569a70 BF |
538 | if (nr_secflavs) |
539 | cbs->flavor = (u32)(-1); | |
540 | else | |
541 | /* Is this legal? Be generous, take it to mean AUTH_NONE: */ | |
542 | cbs->flavor = 0; | |
acb2887e BF |
543 | for (i = 0; i < nr_secflavs; ++i) { |
544 | READ_BUF(4); | |
06553991 | 545 | dummy = be32_to_cpup(p++); |
acb2887e BF |
546 | switch (dummy) { |
547 | case RPC_AUTH_NULL: | |
548 | /* Nothing to read */ | |
12fc3e92 BF |
549 | if (cbs->flavor == (u32)(-1)) |
550 | cbs->flavor = RPC_AUTH_NULL; | |
acb2887e BF |
551 | break; |
552 | case RPC_AUTH_UNIX: | |
553 | READ_BUF(8); | |
554 | /* stamp */ | |
06553991 | 555 | dummy = be32_to_cpup(p++); |
acb2887e BF |
556 | |
557 | /* machine name */ | |
06553991 | 558 | dummy = be32_to_cpup(p++); |
acb2887e BF |
559 | READ_BUF(dummy); |
560 | SAVEMEM(machine_name, dummy); | |
561 | ||
562 | /* uid, gid */ | |
563 | READ_BUF(8); | |
06553991 BF |
564 | uid = be32_to_cpup(p++); |
565 | gid = be32_to_cpup(p++); | |
acb2887e BF |
566 | |
567 | /* more gids */ | |
568 | READ_BUF(4); | |
06553991 | 569 | dummy = be32_to_cpup(p++); |
acb2887e | 570 | READ_BUF(dummy * 4); |
12fc3e92 | 571 | if (cbs->flavor == (u32)(-1)) { |
e45d1a18 TM |
572 | kuid_t kuid = make_kuid(userns, uid); |
573 | kgid_t kgid = make_kgid(userns, gid); | |
03bc6d1c EB |
574 | if (uid_valid(kuid) && gid_valid(kgid)) { |
575 | cbs->uid = kuid; | |
576 | cbs->gid = kgid; | |
577 | cbs->flavor = RPC_AUTH_UNIX; | |
578 | } else { | |
579 | dprintk("RPC_AUTH_UNIX with invalid" | |
580 | "uid or gid ignoring!\n"); | |
581 | } | |
12fc3e92 | 582 | } |
acb2887e BF |
583 | break; |
584 | case RPC_AUTH_GSS: | |
585 | dprintk("RPC_AUTH_GSS callback secflavor " | |
586 | "not supported!\n"); | |
587 | READ_BUF(8); | |
588 | /* gcbp_service */ | |
06553991 | 589 | dummy = be32_to_cpup(p++); |
acb2887e | 590 | /* gcbp_handle_from_server */ |
06553991 | 591 | dummy = be32_to_cpup(p++); |
acb2887e BF |
592 | READ_BUF(dummy); |
593 | p += XDR_QUADLEN(dummy); | |
594 | /* gcbp_handle_from_client */ | |
595 | READ_BUF(4); | |
06553991 | 596 | dummy = be32_to_cpup(p++); |
acb2887e BF |
597 | READ_BUF(dummy); |
598 | break; | |
599 | default: | |
600 | dprintk("Illegal callback secflavor\n"); | |
601 | return nfserr_inval; | |
602 | } | |
603 | } | |
604 | DECODE_TAIL; | |
605 | } | |
606 | ||
cb73a9f4 BF |
607 | static __be32 nfsd4_decode_backchannel_ctl(struct nfsd4_compoundargs *argp, struct nfsd4_backchannel_ctl *bc) |
608 | { | |
609 | DECODE_HEAD; | |
610 | ||
611 | READ_BUF(4); | |
06553991 | 612 | bc->bc_cb_program = be32_to_cpup(p++); |
cb73a9f4 BF |
613 | nfsd4_decode_cb_sec(argp, &bc->bc_cb_sec); |
614 | ||
615 | DECODE_TAIL; | |
616 | } | |
617 | ||
1d1bc8f2 BF |
618 | static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) |
619 | { | |
620 | DECODE_HEAD; | |
1d1bc8f2 BF |
621 | |
622 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 8); | |
623 | COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
06553991 | 624 | bcts->dir = be32_to_cpup(p++); |
6ce2357f BS |
625 | /* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker |
626 | * could help us figure out we should be using it. */ | |
1d1bc8f2 BF |
627 | DECODE_TAIL; |
628 | } | |
629 | ||
b37ad28b | 630 | static __be32 |
1da177e4 LT |
631 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
632 | { | |
633 | DECODE_HEAD; | |
634 | ||
e31a1b66 | 635 | READ_BUF(4); |
06553991 | 636 | close->cl_seqid = be32_to_cpup(p++); |
e31a1b66 | 637 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
1da177e4 LT |
638 | |
639 | DECODE_TAIL; | |
640 | } | |
641 | ||
642 | ||
b37ad28b | 643 | static __be32 |
1da177e4 LT |
644 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
645 | { | |
646 | DECODE_HEAD; | |
647 | ||
648 | READ_BUF(12); | |
542d1ab3 | 649 | p = xdr_decode_hyper(p, &commit->co_offset); |
06553991 | 650 | commit->co_count = be32_to_cpup(p++); |
1da177e4 LT |
651 | |
652 | DECODE_TAIL; | |
653 | } | |
654 | ||
b37ad28b | 655 | static __be32 |
1da177e4 LT |
656 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
657 | { | |
658 | DECODE_HEAD; | |
659 | ||
660 | READ_BUF(4); | |
06553991 | 661 | create->cr_type = be32_to_cpup(p++); |
1da177e4 LT |
662 | switch (create->cr_type) { |
663 | case NF4LNK: | |
664 | READ_BUF(4); | |
7fb84306 BF |
665 | create->cr_datalen = be32_to_cpup(p++); |
666 | READ_BUF(create->cr_datalen); | |
29c353b3 | 667 | create->cr_data = svcxdr_dupstr(argp, p, create->cr_datalen); |
7fb84306 | 668 | if (!create->cr_data) |
76f47128 | 669 | return nfserr_jukebox; |
1da177e4 LT |
670 | break; |
671 | case NF4BLK: | |
672 | case NF4CHR: | |
673 | READ_BUF(8); | |
06553991 BF |
674 | create->cr_specdata1 = be32_to_cpup(p++); |
675 | create->cr_specdata2 = be32_to_cpup(p++); | |
1da177e4 LT |
676 | break; |
677 | case NF4SOCK: | |
678 | case NF4FIFO: | |
679 | case NF4DIR: | |
680 | default: | |
681 | break; | |
682 | } | |
683 | ||
684 | READ_BUF(4); | |
06553991 | 685 | create->cr_namelen = be32_to_cpup(p++); |
1da177e4 LT |
686 | READ_BUF(create->cr_namelen); |
687 | SAVEMEM(create->cr_name, create->cr_namelen); | |
a36b1725 | 688 | if ((status = check_filename(create->cr_name, create->cr_namelen))) |
1da177e4 LT |
689 | return status; |
690 | ||
3c8e0316 | 691 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
47057abd | 692 | &create->cr_acl, &create->cr_label, |
880a3a53 | 693 | &create->cr_umask); |
c0d6fc8a | 694 | if (status) |
1da177e4 LT |
695 | goto out; |
696 | ||
697 | DECODE_TAIL; | |
698 | } | |
699 | ||
b37ad28b | 700 | static inline __be32 |
1da177e4 LT |
701 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
702 | { | |
e31a1b66 | 703 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
1da177e4 LT |
704 | } |
705 | ||
b37ad28b | 706 | static inline __be32 |
1da177e4 LT |
707 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
708 | { | |
709 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
710 | } | |
711 | ||
b37ad28b | 712 | static __be32 |
1da177e4 LT |
713 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
714 | { | |
715 | DECODE_HEAD; | |
716 | ||
717 | READ_BUF(4); | |
06553991 | 718 | link->li_namelen = be32_to_cpup(p++); |
1da177e4 LT |
719 | READ_BUF(link->li_namelen); |
720 | SAVEMEM(link->li_name, link->li_namelen); | |
a36b1725 | 721 | if ((status = check_filename(link->li_name, link->li_namelen))) |
1da177e4 LT |
722 | return status; |
723 | ||
724 | DECODE_TAIL; | |
725 | } | |
726 | ||
b37ad28b | 727 | static __be32 |
1da177e4 LT |
728 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
729 | { | |
730 | DECODE_HEAD; | |
731 | ||
1da177e4 LT |
732 | /* |
733 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
734 | */ | |
735 | READ_BUF(28); | |
06553991 | 736 | lock->lk_type = be32_to_cpup(p++); |
1da177e4 LT |
737 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) |
738 | goto xdr_error; | |
06553991 | 739 | lock->lk_reclaim = be32_to_cpup(p++); |
542d1ab3 BF |
740 | p = xdr_decode_hyper(p, &lock->lk_offset); |
741 | p = xdr_decode_hyper(p, &lock->lk_length); | |
06553991 | 742 | lock->lk_is_new = be32_to_cpup(p++); |
1da177e4 LT |
743 | |
744 | if (lock->lk_is_new) { | |
e31a1b66 | 745 | READ_BUF(4); |
06553991 | 746 | lock->lk_new_open_seqid = be32_to_cpup(p++); |
e31a1b66 BH |
747 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
748 | if (status) | |
749 | return status; | |
750 | READ_BUF(8 + sizeof(clientid_t)); | |
06553991 | 751 | lock->lk_new_lock_seqid = be32_to_cpup(p++); |
1da177e4 | 752 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); |
06553991 | 753 | lock->lk_new_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
754 | READ_BUF(lock->lk_new_owner.len); |
755 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
756 | } else { | |
e31a1b66 BH |
757 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
758 | if (status) | |
759 | return status; | |
760 | READ_BUF(4); | |
06553991 | 761 | lock->lk_old_lock_seqid = be32_to_cpup(p++); |
1da177e4 LT |
762 | } |
763 | ||
764 | DECODE_TAIL; | |
765 | } | |
766 | ||
b37ad28b | 767 | static __be32 |
1da177e4 LT |
768 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
769 | { | |
770 | DECODE_HEAD; | |
771 | ||
772 | READ_BUF(32); | |
06553991 | 773 | lockt->lt_type = be32_to_cpup(p++); |
1da177e4 LT |
774 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) |
775 | goto xdr_error; | |
542d1ab3 BF |
776 | p = xdr_decode_hyper(p, &lockt->lt_offset); |
777 | p = xdr_decode_hyper(p, &lockt->lt_length); | |
1da177e4 | 778 | COPYMEM(&lockt->lt_clientid, 8); |
06553991 | 779 | lockt->lt_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
780 | READ_BUF(lockt->lt_owner.len); |
781 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
782 | ||
783 | DECODE_TAIL; | |
784 | } | |
785 | ||
b37ad28b | 786 | static __be32 |
1da177e4 LT |
787 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
788 | { | |
789 | DECODE_HEAD; | |
790 | ||
e31a1b66 | 791 | READ_BUF(8); |
06553991 | 792 | locku->lu_type = be32_to_cpup(p++); |
1da177e4 LT |
793 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) |
794 | goto xdr_error; | |
06553991 | 795 | locku->lu_seqid = be32_to_cpup(p++); |
e31a1b66 BH |
796 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
797 | if (status) | |
798 | return status; | |
799 | READ_BUF(16); | |
542d1ab3 BF |
800 | p = xdr_decode_hyper(p, &locku->lu_offset); |
801 | p = xdr_decode_hyper(p, &locku->lu_length); | |
1da177e4 LT |
802 | |
803 | DECODE_TAIL; | |
804 | } | |
805 | ||
b37ad28b | 806 | static __be32 |
1da177e4 LT |
807 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
808 | { | |
809 | DECODE_HEAD; | |
810 | ||
811 | READ_BUF(4); | |
06553991 | 812 | lookup->lo_len = be32_to_cpup(p++); |
1da177e4 LT |
813 | READ_BUF(lookup->lo_len); |
814 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
a36b1725 | 815 | if ((status = check_filename(lookup->lo_name, lookup->lo_len))) |
1da177e4 LT |
816 | return status; |
817 | ||
818 | DECODE_TAIL; | |
819 | } | |
820 | ||
2c8bd7e0 | 821 | static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when) |
04f9e664 BF |
822 | { |
823 | __be32 *p; | |
824 | u32 w; | |
825 | ||
826 | READ_BUF(4); | |
06553991 | 827 | w = be32_to_cpup(p++); |
2c8bd7e0 BH |
828 | *share_access = w & NFS4_SHARE_ACCESS_MASK; |
829 | *deleg_want = w & NFS4_SHARE_WANT_MASK; | |
830 | if (deleg_when) | |
831 | *deleg_when = w & NFS4_SHARE_WHEN_MASK; | |
832 | ||
04f9e664 BF |
833 | switch (w & NFS4_SHARE_ACCESS_MASK) { |
834 | case NFS4_SHARE_ACCESS_READ: | |
835 | case NFS4_SHARE_ACCESS_WRITE: | |
836 | case NFS4_SHARE_ACCESS_BOTH: | |
837 | break; | |
838 | default: | |
839 | return nfserr_bad_xdr; | |
840 | } | |
fc0d14fe | 841 | w &= ~NFS4_SHARE_ACCESS_MASK; |
04f9e664 BF |
842 | if (!w) |
843 | return nfs_ok; | |
844 | if (!argp->minorversion) | |
845 | return nfserr_bad_xdr; | |
846 | switch (w & NFS4_SHARE_WANT_MASK) { | |
847 | case NFS4_SHARE_WANT_NO_PREFERENCE: | |
848 | case NFS4_SHARE_WANT_READ_DELEG: | |
849 | case NFS4_SHARE_WANT_WRITE_DELEG: | |
850 | case NFS4_SHARE_WANT_ANY_DELEG: | |
851 | case NFS4_SHARE_WANT_NO_DELEG: | |
852 | case NFS4_SHARE_WANT_CANCEL: | |
853 | break; | |
854 | default: | |
855 | return nfserr_bad_xdr; | |
856 | } | |
92bac8c5 | 857 | w &= ~NFS4_SHARE_WANT_MASK; |
04f9e664 BF |
858 | if (!w) |
859 | return nfs_ok; | |
2c8bd7e0 BH |
860 | |
861 | if (!deleg_when) /* open_downgrade */ | |
862 | return nfserr_inval; | |
04f9e664 BF |
863 | switch (w) { |
864 | case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL: | |
865 | case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED: | |
c668fc6d BH |
866 | case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL | |
867 | NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED): | |
04f9e664 BF |
868 | return nfs_ok; |
869 | } | |
870 | xdr_error: | |
871 | return nfserr_bad_xdr; | |
872 | } | |
873 | ||
874 | static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x) | |
875 | { | |
876 | __be32 *p; | |
877 | ||
878 | READ_BUF(4); | |
06553991 | 879 | *x = be32_to_cpup(p++); |
04f9e664 | 880 | /* Note: unlinke access bits, deny bits may be zero. */ |
01cd4afa | 881 | if (*x & ~NFS4_SHARE_DENY_BOTH) |
04f9e664 BF |
882 | return nfserr_bad_xdr; |
883 | return nfs_ok; | |
884 | xdr_error: | |
885 | return nfserr_bad_xdr; | |
886 | } | |
887 | ||
a084daf5 BF |
888 | static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o) |
889 | { | |
890 | __be32 *p; | |
891 | ||
892 | READ_BUF(4); | |
06553991 | 893 | o->len = be32_to_cpup(p++); |
a084daf5 BF |
894 | |
895 | if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT) | |
896 | return nfserr_bad_xdr; | |
897 | ||
898 | READ_BUF(o->len); | |
899 | SAVEMEM(o->data, o->len); | |
900 | return nfs_ok; | |
901 | xdr_error: | |
902 | return nfserr_bad_xdr; | |
903 | } | |
904 | ||
b37ad28b | 905 | static __be32 |
1da177e4 LT |
906 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
907 | { | |
908 | DECODE_HEAD; | |
2c8bd7e0 | 909 | u32 dummy; |
1da177e4 LT |
910 | |
911 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
912 | open->op_iattr.ia_valid = 0; | |
fe0750e5 | 913 | open->op_openowner = NULL; |
1da177e4 | 914 | |
9d313b17 | 915 | open->op_xdr_error = 0; |
1da177e4 | 916 | /* seqid, share_access, share_deny, clientid, ownerlen */ |
04f9e664 | 917 | READ_BUF(4); |
06553991 | 918 | open->op_seqid = be32_to_cpup(p++); |
2c8bd7e0 BH |
919 | /* decode, yet ignore deleg_when until supported */ |
920 | status = nfsd4_decode_share_access(argp, &open->op_share_access, | |
921 | &open->op_deleg_want, &dummy); | |
04f9e664 BF |
922 | if (status) |
923 | goto xdr_error; | |
924 | status = nfsd4_decode_share_deny(argp, &open->op_share_deny); | |
925 | if (status) | |
926 | goto xdr_error; | |
a084daf5 | 927 | READ_BUF(sizeof(clientid_t)); |
1da177e4 | 928 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); |
a084daf5 BF |
929 | status = nfsd4_decode_opaque(argp, &open->op_owner); |
930 | if (status) | |
931 | goto xdr_error; | |
932 | READ_BUF(4); | |
06553991 | 933 | open->op_create = be32_to_cpup(p++); |
1da177e4 LT |
934 | switch (open->op_create) { |
935 | case NFS4_OPEN_NOCREATE: | |
936 | break; | |
937 | case NFS4_OPEN_CREATE: | |
938 | READ_BUF(4); | |
06553991 | 939 | open->op_createmode = be32_to_cpup(p++); |
1da177e4 LT |
940 | switch (open->op_createmode) { |
941 | case NFS4_CREATE_UNCHECKED: | |
942 | case NFS4_CREATE_GUARDED: | |
c0d6fc8a | 943 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
47057abd | 944 | &open->op_iattr, &open->op_acl, &open->op_label, |
880a3a53 | 945 | &open->op_umask); |
c0d6fc8a | 946 | if (status) |
1da177e4 LT |
947 | goto out; |
948 | break; | |
949 | case NFS4_CREATE_EXCLUSIVE: | |
ab4684d1 CL |
950 | READ_BUF(NFS4_VERIFIER_SIZE); |
951 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 952 | break; |
79fb54ab BH |
953 | case NFS4_CREATE_EXCLUSIVE4_1: |
954 | if (argp->minorversion < 1) | |
955 | goto xdr_error; | |
ab4684d1 CL |
956 | READ_BUF(NFS4_VERIFIER_SIZE); |
957 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
79fb54ab | 958 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
47057abd | 959 | &open->op_iattr, &open->op_acl, &open->op_label, |
880a3a53 | 960 | &open->op_umask); |
79fb54ab BH |
961 | if (status) |
962 | goto out; | |
963 | break; | |
1da177e4 LT |
964 | default: |
965 | goto xdr_error; | |
966 | } | |
967 | break; | |
968 | default: | |
969 | goto xdr_error; | |
970 | } | |
971 | ||
972 | /* open_claim */ | |
973 | READ_BUF(4); | |
06553991 | 974 | open->op_claim_type = be32_to_cpup(p++); |
1da177e4 LT |
975 | switch (open->op_claim_type) { |
976 | case NFS4_OPEN_CLAIM_NULL: | |
977 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
978 | READ_BUF(4); | |
06553991 | 979 | open->op_fname.len = be32_to_cpup(p++); |
1da177e4 LT |
980 | READ_BUF(open->op_fname.len); |
981 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 982 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
983 | return status; |
984 | break; | |
985 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
986 | READ_BUF(4); | |
06553991 | 987 | open->op_delegate_type = be32_to_cpup(p++); |
1da177e4 LT |
988 | break; |
989 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
e31a1b66 BH |
990 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
991 | if (status) | |
992 | return status; | |
993 | READ_BUF(4); | |
06553991 | 994 | open->op_fname.len = be32_to_cpup(p++); |
1da177e4 LT |
995 | READ_BUF(open->op_fname.len); |
996 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 997 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
998 | return status; |
999 | break; | |
8b289b2c BF |
1000 | case NFS4_OPEN_CLAIM_FH: |
1001 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
1002 | if (argp->minorversion < 1) | |
1003 | goto xdr_error; | |
1004 | /* void */ | |
1005 | break; | |
1006 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1007 | if (argp->minorversion < 1) | |
1008 | goto xdr_error; | |
1009 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); | |
1010 | if (status) | |
1011 | return status; | |
1012 | break; | |
1da177e4 LT |
1013 | default: |
1014 | goto xdr_error; | |
1015 | } | |
1016 | ||
1017 | DECODE_TAIL; | |
1018 | } | |
1019 | ||
b37ad28b | 1020 | static __be32 |
1da177e4 LT |
1021 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
1022 | { | |
1023 | DECODE_HEAD; | |
e1a90ebd AS |
1024 | |
1025 | if (argp->minorversion >= 1) | |
1026 | return nfserr_notsupp; | |
1027 | ||
e31a1b66 BH |
1028 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
1029 | if (status) | |
1030 | return status; | |
1031 | READ_BUF(4); | |
06553991 | 1032 | open_conf->oc_seqid = be32_to_cpup(p++); |
e1a90ebd | 1033 | |
1da177e4 LT |
1034 | DECODE_TAIL; |
1035 | } | |
1036 | ||
b37ad28b | 1037 | static __be32 |
1da177e4 LT |
1038 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
1039 | { | |
1040 | DECODE_HEAD; | |
1041 | ||
e31a1b66 BH |
1042 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
1043 | if (status) | |
1044 | return status; | |
04f9e664 | 1045 | READ_BUF(4); |
06553991 | 1046 | open_down->od_seqid = be32_to_cpup(p++); |
2c8bd7e0 BH |
1047 | status = nfsd4_decode_share_access(argp, &open_down->od_share_access, |
1048 | &open_down->od_deleg_want, NULL); | |
04f9e664 BF |
1049 | if (status) |
1050 | return status; | |
1051 | status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny); | |
1052 | if (status) | |
1053 | return status; | |
1da177e4 LT |
1054 | DECODE_TAIL; |
1055 | } | |
1056 | ||
b37ad28b | 1057 | static __be32 |
1da177e4 LT |
1058 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
1059 | { | |
1060 | DECODE_HEAD; | |
1061 | ||
1062 | READ_BUF(4); | |
06553991 | 1063 | putfh->pf_fhlen = be32_to_cpup(p++); |
1da177e4 LT |
1064 | if (putfh->pf_fhlen > NFS4_FHSIZE) |
1065 | goto xdr_error; | |
1066 | READ_BUF(putfh->pf_fhlen); | |
1067 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
1068 | ||
1069 | DECODE_TAIL; | |
1070 | } | |
1071 | ||
e1a90ebd AS |
1072 | static __be32 |
1073 | nfsd4_decode_putpubfh(struct nfsd4_compoundargs *argp, void *p) | |
1074 | { | |
1075 | if (argp->minorversion == 0) | |
1076 | return nfs_ok; | |
1077 | return nfserr_notsupp; | |
1078 | } | |
1079 | ||
b37ad28b | 1080 | static __be32 |
1da177e4 LT |
1081 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
1082 | { | |
1083 | DECODE_HEAD; | |
1084 | ||
e31a1b66 BH |
1085 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
1086 | if (status) | |
1087 | return status; | |
1088 | READ_BUF(12); | |
542d1ab3 | 1089 | p = xdr_decode_hyper(p, &read->rd_offset); |
06553991 | 1090 | read->rd_length = be32_to_cpup(p++); |
1da177e4 LT |
1091 | |
1092 | DECODE_TAIL; | |
1093 | } | |
1094 | ||
b37ad28b | 1095 | static __be32 |
1da177e4 LT |
1096 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
1097 | { | |
1098 | DECODE_HEAD; | |
1099 | ||
1100 | READ_BUF(24); | |
542d1ab3 | 1101 | p = xdr_decode_hyper(p, &readdir->rd_cookie); |
1da177e4 | 1102 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); |
06553991 BF |
1103 | readdir->rd_dircount = be32_to_cpup(p++); |
1104 | readdir->rd_maxcount = be32_to_cpup(p++); | |
1da177e4 LT |
1105 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) |
1106 | goto out; | |
1107 | ||
1108 | DECODE_TAIL; | |
1109 | } | |
1110 | ||
b37ad28b | 1111 | static __be32 |
1da177e4 LT |
1112 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
1113 | { | |
1114 | DECODE_HEAD; | |
1115 | ||
1116 | READ_BUF(4); | |
06553991 | 1117 | remove->rm_namelen = be32_to_cpup(p++); |
1da177e4 LT |
1118 | READ_BUF(remove->rm_namelen); |
1119 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
a36b1725 | 1120 | if ((status = check_filename(remove->rm_name, remove->rm_namelen))) |
1da177e4 LT |
1121 | return status; |
1122 | ||
1123 | DECODE_TAIL; | |
1124 | } | |
1125 | ||
b37ad28b | 1126 | static __be32 |
1da177e4 LT |
1127 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
1128 | { | |
1129 | DECODE_HEAD; | |
1130 | ||
1131 | READ_BUF(4); | |
06553991 | 1132 | rename->rn_snamelen = be32_to_cpup(p++); |
4aed9c46 | 1133 | READ_BUF(rename->rn_snamelen); |
1da177e4 | 1134 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); |
4aed9c46 | 1135 | READ_BUF(4); |
06553991 | 1136 | rename->rn_tnamelen = be32_to_cpup(p++); |
1da177e4 LT |
1137 | READ_BUF(rename->rn_tnamelen); |
1138 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
a36b1725 | 1139 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen))) |
1da177e4 | 1140 | return status; |
a36b1725 | 1141 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen))) |
1da177e4 LT |
1142 | return status; |
1143 | ||
1144 | DECODE_TAIL; | |
1145 | } | |
1146 | ||
b37ad28b | 1147 | static __be32 |
1da177e4 LT |
1148 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
1149 | { | |
1150 | DECODE_HEAD; | |
1151 | ||
e1a90ebd AS |
1152 | if (argp->minorversion >= 1) |
1153 | return nfserr_notsupp; | |
1154 | ||
1da177e4 LT |
1155 | READ_BUF(sizeof(clientid_t)); |
1156 | COPYMEM(clientid, sizeof(clientid_t)); | |
1157 | ||
1158 | DECODE_TAIL; | |
1159 | } | |
1160 | ||
dcb488a3 AA |
1161 | static __be32 |
1162 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
1163 | struct nfsd4_secinfo *secinfo) | |
1164 | { | |
1165 | DECODE_HEAD; | |
1166 | ||
1167 | READ_BUF(4); | |
06553991 | 1168 | secinfo->si_namelen = be32_to_cpup(p++); |
dcb488a3 AA |
1169 | READ_BUF(secinfo->si_namelen); |
1170 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
a36b1725 | 1171 | status = check_filename(secinfo->si_name, secinfo->si_namelen); |
dcb488a3 AA |
1172 | if (status) |
1173 | return status; | |
1174 | DECODE_TAIL; | |
1175 | } | |
1176 | ||
04f4ad16 BF |
1177 | static __be32 |
1178 | nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, | |
1179 | struct nfsd4_secinfo_no_name *sin) | |
1180 | { | |
1181 | DECODE_HEAD; | |
1182 | ||
1183 | READ_BUF(4); | |
06553991 | 1184 | sin->sin_style = be32_to_cpup(p++); |
04f4ad16 BF |
1185 | DECODE_TAIL; |
1186 | } | |
1187 | ||
b37ad28b | 1188 | static __be32 |
1da177e4 LT |
1189 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
1190 | { | |
e31a1b66 | 1191 | __be32 status; |
1da177e4 | 1192 | |
e31a1b66 BH |
1193 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
1194 | if (status) | |
1195 | return status; | |
3c8e0316 | 1196 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
47057abd | 1197 | &setattr->sa_acl, &setattr->sa_label, NULL); |
1da177e4 LT |
1198 | } |
1199 | ||
b37ad28b | 1200 | static __be32 |
1da177e4 LT |
1201 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
1202 | { | |
1203 | DECODE_HEAD; | |
1204 | ||
e1a90ebd AS |
1205 | if (argp->minorversion >= 1) |
1206 | return nfserr_notsupp; | |
1207 | ||
ab4684d1 CL |
1208 | READ_BUF(NFS4_VERIFIER_SIZE); |
1209 | COPYMEM(setclientid->se_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 1210 | |
a084daf5 BF |
1211 | status = nfsd4_decode_opaque(argp, &setclientid->se_name); |
1212 | if (status) | |
1213 | return nfserr_bad_xdr; | |
1214 | READ_BUF(8); | |
06553991 BF |
1215 | setclientid->se_callback_prog = be32_to_cpup(p++); |
1216 | setclientid->se_callback_netid_len = be32_to_cpup(p++); | |
4aed9c46 | 1217 | READ_BUF(setclientid->se_callback_netid_len); |
1da177e4 | 1218 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); |
4aed9c46 | 1219 | READ_BUF(4); |
06553991 | 1220 | setclientid->se_callback_addr_len = be32_to_cpup(p++); |
1da177e4 | 1221 | |
4aed9c46 | 1222 | READ_BUF(setclientid->se_callback_addr_len); |
1da177e4 | 1223 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); |
4aed9c46 | 1224 | READ_BUF(4); |
06553991 | 1225 | setclientid->se_callback_ident = be32_to_cpup(p++); |
1da177e4 LT |
1226 | |
1227 | DECODE_TAIL; | |
1228 | } | |
1229 | ||
b37ad28b | 1230 | static __be32 |
1da177e4 LT |
1231 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
1232 | { | |
1233 | DECODE_HEAD; | |
1234 | ||
e1a90ebd AS |
1235 | if (argp->minorversion >= 1) |
1236 | return nfserr_notsupp; | |
1237 | ||
ab4684d1 | 1238 | READ_BUF(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 1239 | COPYMEM(&scd_c->sc_clientid, 8); |
ab4684d1 | 1240 | COPYMEM(&scd_c->sc_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
1241 | |
1242 | DECODE_TAIL; | |
1243 | } | |
1244 | ||
1245 | /* Also used for NVERIFY */ | |
b37ad28b | 1246 | static __be32 |
1da177e4 LT |
1247 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
1248 | { | |
1da177e4 LT |
1249 | DECODE_HEAD; |
1250 | ||
1251 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
1252 | goto out; | |
1253 | ||
1254 | /* For convenience's sake, we compare raw xdr'd attributes in | |
e5f95703 BF |
1255 | * nfsd4_proc_verify */ |
1256 | ||
1da177e4 | 1257 | READ_BUF(4); |
06553991 | 1258 | verify->ve_attrlen = be32_to_cpup(p++); |
1da177e4 LT |
1259 | READ_BUF(verify->ve_attrlen); |
1260 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
1261 | ||
1262 | DECODE_TAIL; | |
1263 | } | |
1264 | ||
b37ad28b | 1265 | static __be32 |
1da177e4 LT |
1266 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
1267 | { | |
1268 | int avail; | |
1da177e4 LT |
1269 | int len; |
1270 | DECODE_HEAD; | |
1271 | ||
e31a1b66 BH |
1272 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
1273 | if (status) | |
1274 | return status; | |
1275 | READ_BUF(16); | |
542d1ab3 | 1276 | p = xdr_decode_hyper(p, &write->wr_offset); |
06553991 | 1277 | write->wr_stable_how = be32_to_cpup(p++); |
54bbb7d2 | 1278 | if (write->wr_stable_how > NFS_FILE_SYNC) |
1da177e4 | 1279 | goto xdr_error; |
06553991 | 1280 | write->wr_buflen = be32_to_cpup(p++); |
1da177e4 LT |
1281 | |
1282 | /* Sorry .. no magic macros for this.. * | |
1283 | * READ_BUF(write->wr_buflen); | |
1284 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
1285 | */ | |
1286 | avail = (char*)argp->end - (char*)argp->p; | |
1287 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
1288 | dprintk("NFSD: xdr error (%s:%d)\n", |
1289 | __FILE__, __LINE__); | |
1da177e4 LT |
1290 | goto xdr_error; |
1291 | } | |
70cc7f75 BF |
1292 | write->wr_head.iov_base = p; |
1293 | write->wr_head.iov_len = avail; | |
70cc7f75 | 1294 | write->wr_pagelist = argp->pagelist; |
5a80a54d BF |
1295 | |
1296 | len = XDR_QUADLEN(write->wr_buflen) << 2; | |
1297 | if (len >= avail) { | |
1298 | int pages; | |
1299 | ||
1300 | len -= avail; | |
1301 | ||
1302 | pages = len >> PAGE_SHIFT; | |
1303 | argp->pagelist += pages; | |
1304 | argp->pagelen -= pages * PAGE_SIZE; | |
1305 | len -= pages * PAGE_SIZE; | |
1306 | ||
fc788f64 | 1307 | next_decode_page(argp); |
1da177e4 | 1308 | } |
5a80a54d | 1309 | argp->p += XDR_QUADLEN(len); |
1da177e4 LT |
1310 | |
1311 | DECODE_TAIL; | |
1312 | } | |
1313 | ||
b37ad28b | 1314 | static __be32 |
1da177e4 LT |
1315 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
1316 | { | |
1317 | DECODE_HEAD; | |
1318 | ||
e1a90ebd AS |
1319 | if (argp->minorversion >= 1) |
1320 | return nfserr_notsupp; | |
1321 | ||
1da177e4 LT |
1322 | READ_BUF(12); |
1323 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
06553991 | 1324 | rlockowner->rl_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
1325 | READ_BUF(rlockowner->rl_owner.len); |
1326 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
1327 | ||
60adfc50 AA |
1328 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1329 | return nfserr_inval; | |
1da177e4 LT |
1330 | DECODE_TAIL; |
1331 | } | |
1332 | ||
2db134eb AA |
1333 | static __be32 |
1334 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1335 | struct nfsd4_exchange_id *exid) |
2db134eb | 1336 | { |
5afa040b | 1337 | int dummy, tmp; |
0733d213 AA |
1338 | DECODE_HEAD; |
1339 | ||
1340 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1341 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1342 | ||
a084daf5 BF |
1343 | status = nfsd4_decode_opaque(argp, &exid->clname); |
1344 | if (status) | |
1345 | return nfserr_bad_xdr; | |
0733d213 AA |
1346 | |
1347 | READ_BUF(4); | |
06553991 | 1348 | exid->flags = be32_to_cpup(p++); |
0733d213 AA |
1349 | |
1350 | /* Ignore state_protect4_a */ | |
1351 | READ_BUF(4); | |
06553991 | 1352 | exid->spa_how = be32_to_cpup(p++); |
0733d213 AA |
1353 | switch (exid->spa_how) { |
1354 | case SP4_NONE: | |
1355 | break; | |
1356 | case SP4_MACH_CRED: | |
1357 | /* spo_must_enforce */ | |
ed941643 AE |
1358 | status = nfsd4_decode_bitmap(argp, |
1359 | exid->spo_must_enforce); | |
1360 | if (status) | |
1361 | goto out; | |
0733d213 | 1362 | /* spo_must_allow */ |
ed941643 AE |
1363 | status = nfsd4_decode_bitmap(argp, exid->spo_must_allow); |
1364 | if (status) | |
1365 | goto out; | |
0733d213 AA |
1366 | break; |
1367 | case SP4_SSV: | |
1368 | /* ssp_ops */ | |
1369 | READ_BUF(4); | |
06553991 | 1370 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1371 | READ_BUF(dummy * 4); |
1372 | p += dummy; | |
1373 | ||
1374 | READ_BUF(4); | |
06553991 | 1375 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1376 | READ_BUF(dummy * 4); |
1377 | p += dummy; | |
1378 | ||
1379 | /* ssp_hash_algs<> */ | |
1380 | READ_BUF(4); | |
06553991 | 1381 | tmp = be32_to_cpup(p++); |
5afa040b MJ |
1382 | while (tmp--) { |
1383 | READ_BUF(4); | |
06553991 | 1384 | dummy = be32_to_cpup(p++); |
5afa040b MJ |
1385 | READ_BUF(dummy); |
1386 | p += XDR_QUADLEN(dummy); | |
1387 | } | |
0733d213 AA |
1388 | |
1389 | /* ssp_encr_algs<> */ | |
1390 | READ_BUF(4); | |
06553991 | 1391 | tmp = be32_to_cpup(p++); |
5afa040b MJ |
1392 | while (tmp--) { |
1393 | READ_BUF(4); | |
06553991 | 1394 | dummy = be32_to_cpup(p++); |
5afa040b MJ |
1395 | READ_BUF(dummy); |
1396 | p += XDR_QUADLEN(dummy); | |
1397 | } | |
0733d213 | 1398 | |
5ed96bc5 | 1399 | /* ignore ssp_window and ssp_num_gss_handles: */ |
0733d213 | 1400 | READ_BUF(8); |
0733d213 AA |
1401 | break; |
1402 | default: | |
1403 | goto xdr_error; | |
1404 | } | |
1405 | ||
0733d213 | 1406 | READ_BUF(4); /* nfs_impl_id4 array length */ |
06553991 | 1407 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1408 | |
1409 | if (dummy > 1) | |
1410 | goto xdr_error; | |
1411 | ||
1412 | if (dummy == 1) { | |
79123444 BF |
1413 | status = nfsd4_decode_opaque(argp, &exid->nii_domain); |
1414 | if (status) | |
1415 | goto xdr_error; | |
0733d213 AA |
1416 | |
1417 | /* nii_name */ | |
79123444 BF |
1418 | status = nfsd4_decode_opaque(argp, &exid->nii_name); |
1419 | if (status) | |
1420 | goto xdr_error; | |
0733d213 AA |
1421 | |
1422 | /* nii_date */ | |
79123444 BF |
1423 | status = nfsd4_decode_time(argp, &exid->nii_time); |
1424 | if (status) | |
1425 | goto xdr_error; | |
0733d213 AA |
1426 | } |
1427 | DECODE_TAIL; | |
2db134eb AA |
1428 | } |
1429 | ||
1430 | static __be32 | |
1431 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1432 | struct nfsd4_create_session *sess) | |
1433 | { | |
ec6b5d7b | 1434 | DECODE_HEAD; |
ec6b5d7b AA |
1435 | |
1436 | READ_BUF(16); | |
1437 | COPYMEM(&sess->clientid, 8); | |
06553991 BF |
1438 | sess->seqid = be32_to_cpup(p++); |
1439 | sess->flags = be32_to_cpup(p++); | |
ec6b5d7b AA |
1440 | |
1441 | /* Fore channel attrs */ | |
1442 | READ_BUF(28); | |
b96811cd | 1443 | p++; /* headerpadsz is always 0 */ |
06553991 BF |
1444 | sess->fore_channel.maxreq_sz = be32_to_cpup(p++); |
1445 | sess->fore_channel.maxresp_sz = be32_to_cpup(p++); | |
1446 | sess->fore_channel.maxresp_cached = be32_to_cpup(p++); | |
1447 | sess->fore_channel.maxops = be32_to_cpup(p++); | |
1448 | sess->fore_channel.maxreqs = be32_to_cpup(p++); | |
1449 | sess->fore_channel.nr_rdma_attrs = be32_to_cpup(p++); | |
ec6b5d7b AA |
1450 | if (sess->fore_channel.nr_rdma_attrs == 1) { |
1451 | READ_BUF(4); | |
06553991 | 1452 | sess->fore_channel.rdma_attrs = be32_to_cpup(p++); |
ec6b5d7b AA |
1453 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { |
1454 | dprintk("Too many fore channel attr bitmaps!\n"); | |
1455 | goto xdr_error; | |
1456 | } | |
1457 | ||
1458 | /* Back channel attrs */ | |
1459 | READ_BUF(28); | |
b96811cd | 1460 | p++; /* headerpadsz is always 0 */ |
06553991 BF |
1461 | sess->back_channel.maxreq_sz = be32_to_cpup(p++); |
1462 | sess->back_channel.maxresp_sz = be32_to_cpup(p++); | |
1463 | sess->back_channel.maxresp_cached = be32_to_cpup(p++); | |
1464 | sess->back_channel.maxops = be32_to_cpup(p++); | |
1465 | sess->back_channel.maxreqs = be32_to_cpup(p++); | |
1466 | sess->back_channel.nr_rdma_attrs = be32_to_cpup(p++); | |
ec6b5d7b AA |
1467 | if (sess->back_channel.nr_rdma_attrs == 1) { |
1468 | READ_BUF(4); | |
06553991 | 1469 | sess->back_channel.rdma_attrs = be32_to_cpup(p++); |
ec6b5d7b AA |
1470 | } else if (sess->back_channel.nr_rdma_attrs > 1) { |
1471 | dprintk("Too many back channel attr bitmaps!\n"); | |
1472 | goto xdr_error; | |
1473 | } | |
1474 | ||
acb2887e | 1475 | READ_BUF(4); |
06553991 | 1476 | sess->callback_prog = be32_to_cpup(p++); |
acb2887e | 1477 | nfsd4_decode_cb_sec(argp, &sess->cb_sec); |
ec6b5d7b | 1478 | DECODE_TAIL; |
2db134eb AA |
1479 | } |
1480 | ||
1481 | static __be32 | |
1482 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, | |
1483 | struct nfsd4_destroy_session *destroy_session) | |
1484 | { | |
e10e0cfc BH |
1485 | DECODE_HEAD; |
1486 | READ_BUF(NFS4_MAX_SESSIONID_LEN); | |
1487 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1488 | ||
1489 | DECODE_TAIL; | |
2db134eb AA |
1490 | } |
1491 | ||
e1ca12df BS |
1492 | static __be32 |
1493 | nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp, | |
1494 | struct nfsd4_free_stateid *free_stateid) | |
1495 | { | |
1496 | DECODE_HEAD; | |
1497 | ||
1498 | READ_BUF(sizeof(stateid_t)); | |
06553991 | 1499 | free_stateid->fr_stateid.si_generation = be32_to_cpup(p++); |
e1ca12df BS |
1500 | COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t)); |
1501 | ||
1502 | DECODE_TAIL; | |
1503 | } | |
1504 | ||
2db134eb AA |
1505 | static __be32 |
1506 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, | |
1507 | struct nfsd4_sequence *seq) | |
1508 | { | |
b85d4c01 BH |
1509 | DECODE_HEAD; |
1510 | ||
1511 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); | |
1512 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
06553991 BF |
1513 | seq->seqid = be32_to_cpup(p++); |
1514 | seq->slotid = be32_to_cpup(p++); | |
1515 | seq->maxslots = be32_to_cpup(p++); | |
1516 | seq->cachethis = be32_to_cpup(p++); | |
b85d4c01 BH |
1517 | |
1518 | DECODE_TAIL; | |
2db134eb AA |
1519 | } |
1520 | ||
17456804 BS |
1521 | static __be32 |
1522 | nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid) | |
1523 | { | |
17456804 | 1524 | int i; |
03cfb420 BS |
1525 | __be32 *p, status; |
1526 | struct nfsd4_test_stateid_id *stateid; | |
17456804 BS |
1527 | |
1528 | READ_BUF(4); | |
1529 | test_stateid->ts_num_ids = ntohl(*p++); | |
1530 | ||
03cfb420 | 1531 | INIT_LIST_HEAD(&test_stateid->ts_stateid_list); |
17456804 BS |
1532 | |
1533 | for (i = 0; i < test_stateid->ts_num_ids; i++) { | |
d5e23383 | 1534 | stateid = svcxdr_tmpalloc(argp, sizeof(*stateid)); |
03cfb420 | 1535 | if (!stateid) { |
afcf6792 | 1536 | status = nfserrno(-ENOMEM); |
03cfb420 BS |
1537 | goto out; |
1538 | } | |
1539 | ||
03cfb420 BS |
1540 | INIT_LIST_HEAD(&stateid->ts_id_list); |
1541 | list_add_tail(&stateid->ts_id_list, &test_stateid->ts_stateid_list); | |
1542 | ||
1543 | status = nfsd4_decode_stateid(argp, &stateid->ts_id_stateid); | |
17456804 | 1544 | if (status) |
03cfb420 | 1545 | goto out; |
17456804 BS |
1546 | } |
1547 | ||
1548 | status = 0; | |
1549 | out: | |
1550 | return status; | |
1551 | xdr_error: | |
1552 | dprintk("NFSD: xdr error (%s:%d)\n", __FILE__, __LINE__); | |
1553 | status = nfserr_bad_xdr; | |
1554 | goto out; | |
1555 | } | |
1556 | ||
345c2842 MJ |
1557 | static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_clientid *dc) |
1558 | { | |
1559 | DECODE_HEAD; | |
1560 | ||
1561 | READ_BUF(8); | |
1562 | COPYMEM(&dc->clientid, 8); | |
1563 | ||
1564 | DECODE_TAIL; | |
1565 | } | |
1566 | ||
4dc6ec00 BF |
1567 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) |
1568 | { | |
1569 | DECODE_HEAD; | |
1570 | ||
1571 | READ_BUF(4); | |
06553991 | 1572 | rc->rca_one_fs = be32_to_cpup(p++); |
4dc6ec00 BF |
1573 | |
1574 | DECODE_TAIL; | |
1575 | } | |
1576 | ||
9cf514cc CH |
1577 | #ifdef CONFIG_NFSD_PNFS |
1578 | static __be32 | |
1579 | nfsd4_decode_getdeviceinfo(struct nfsd4_compoundargs *argp, | |
1580 | struct nfsd4_getdeviceinfo *gdev) | |
1581 | { | |
1582 | DECODE_HEAD; | |
1583 | u32 num, i; | |
1584 | ||
1585 | READ_BUF(sizeof(struct nfsd4_deviceid) + 3 * 4); | |
1586 | COPYMEM(&gdev->gd_devid, sizeof(struct nfsd4_deviceid)); | |
1587 | gdev->gd_layout_type = be32_to_cpup(p++); | |
1588 | gdev->gd_maxcount = be32_to_cpup(p++); | |
1589 | num = be32_to_cpup(p++); | |
1590 | if (num) { | |
3171822f SM |
1591 | if (num > 1000) |
1592 | goto xdr_error; | |
9cf514cc CH |
1593 | READ_BUF(4 * num); |
1594 | gdev->gd_notify_types = be32_to_cpup(p++); | |
1595 | for (i = 1; i < num; i++) { | |
1596 | if (be32_to_cpup(p++)) { | |
1597 | status = nfserr_inval; | |
1598 | goto out; | |
1599 | } | |
1600 | } | |
1601 | } | |
1602 | DECODE_TAIL; | |
1603 | } | |
1604 | ||
1605 | static __be32 | |
1606 | nfsd4_decode_layoutget(struct nfsd4_compoundargs *argp, | |
1607 | struct nfsd4_layoutget *lgp) | |
1608 | { | |
1609 | DECODE_HEAD; | |
1610 | ||
1611 | READ_BUF(36); | |
1612 | lgp->lg_signal = be32_to_cpup(p++); | |
1613 | lgp->lg_layout_type = be32_to_cpup(p++); | |
1614 | lgp->lg_seg.iomode = be32_to_cpup(p++); | |
1615 | p = xdr_decode_hyper(p, &lgp->lg_seg.offset); | |
1616 | p = xdr_decode_hyper(p, &lgp->lg_seg.length); | |
1617 | p = xdr_decode_hyper(p, &lgp->lg_minlength); | |
db59c0ef KM |
1618 | |
1619 | status = nfsd4_decode_stateid(argp, &lgp->lg_sid); | |
1620 | if (status) | |
1621 | return status; | |
1622 | ||
9cf514cc CH |
1623 | READ_BUF(4); |
1624 | lgp->lg_maxcount = be32_to_cpup(p++); | |
1625 | ||
1626 | DECODE_TAIL; | |
1627 | } | |
1628 | ||
1629 | static __be32 | |
1630 | nfsd4_decode_layoutcommit(struct nfsd4_compoundargs *argp, | |
1631 | struct nfsd4_layoutcommit *lcp) | |
1632 | { | |
1633 | DECODE_HEAD; | |
1634 | u32 timechange; | |
1635 | ||
1636 | READ_BUF(20); | |
1637 | p = xdr_decode_hyper(p, &lcp->lc_seg.offset); | |
1638 | p = xdr_decode_hyper(p, &lcp->lc_seg.length); | |
1639 | lcp->lc_reclaim = be32_to_cpup(p++); | |
db59c0ef KM |
1640 | |
1641 | status = nfsd4_decode_stateid(argp, &lcp->lc_sid); | |
1642 | if (status) | |
1643 | return status; | |
1644 | ||
9cf514cc CH |
1645 | READ_BUF(4); |
1646 | lcp->lc_newoffset = be32_to_cpup(p++); | |
1647 | if (lcp->lc_newoffset) { | |
1648 | READ_BUF(8); | |
1649 | p = xdr_decode_hyper(p, &lcp->lc_last_wr); | |
1650 | } else | |
1651 | lcp->lc_last_wr = 0; | |
1652 | READ_BUF(4); | |
1653 | timechange = be32_to_cpup(p++); | |
1654 | if (timechange) { | |
1655 | status = nfsd4_decode_time(argp, &lcp->lc_mtime); | |
1656 | if (status) | |
1657 | return status; | |
1658 | } else { | |
1659 | lcp->lc_mtime.tv_nsec = UTIME_NOW; | |
1660 | } | |
1661 | READ_BUF(8); | |
1662 | lcp->lc_layout_type = be32_to_cpup(p++); | |
1663 | ||
1664 | /* | |
1665 | * Save the layout update in XDR format and let the layout driver deal | |
1666 | * with it later. | |
1667 | */ | |
1668 | lcp->lc_up_len = be32_to_cpup(p++); | |
1669 | if (lcp->lc_up_len > 0) { | |
1670 | READ_BUF(lcp->lc_up_len); | |
1671 | READMEM(lcp->lc_up_layout, lcp->lc_up_len); | |
1672 | } | |
1673 | ||
1674 | DECODE_TAIL; | |
1675 | } | |
1676 | ||
1677 | static __be32 | |
1678 | nfsd4_decode_layoutreturn(struct nfsd4_compoundargs *argp, | |
1679 | struct nfsd4_layoutreturn *lrp) | |
1680 | { | |
1681 | DECODE_HEAD; | |
1682 | ||
1683 | READ_BUF(16); | |
1684 | lrp->lr_reclaim = be32_to_cpup(p++); | |
1685 | lrp->lr_layout_type = be32_to_cpup(p++); | |
1686 | lrp->lr_seg.iomode = be32_to_cpup(p++); | |
1687 | lrp->lr_return_type = be32_to_cpup(p++); | |
1688 | if (lrp->lr_return_type == RETURN_FILE) { | |
1689 | READ_BUF(16); | |
1690 | p = xdr_decode_hyper(p, &lrp->lr_seg.offset); | |
1691 | p = xdr_decode_hyper(p, &lrp->lr_seg.length); | |
db59c0ef KM |
1692 | |
1693 | status = nfsd4_decode_stateid(argp, &lrp->lr_sid); | |
1694 | if (status) | |
1695 | return status; | |
1696 | ||
9cf514cc CH |
1697 | READ_BUF(4); |
1698 | lrp->lrf_body_len = be32_to_cpup(p++); | |
1699 | if (lrp->lrf_body_len > 0) { | |
1700 | READ_BUF(lrp->lrf_body_len); | |
1701 | READMEM(lrp->lrf_body, lrp->lrf_body_len); | |
1702 | } | |
1703 | } else { | |
1704 | lrp->lr_seg.offset = 0; | |
1705 | lrp->lr_seg.length = NFS4_MAX_UINT64; | |
1706 | } | |
1707 | ||
1708 | DECODE_TAIL; | |
1709 | } | |
1710 | #endif /* CONFIG_NFSD_PNFS */ | |
1711 | ||
95d871f0 AS |
1712 | static __be32 |
1713 | nfsd4_decode_fallocate(struct nfsd4_compoundargs *argp, | |
1714 | struct nfsd4_fallocate *fallocate) | |
1715 | { | |
1716 | DECODE_HEAD; | |
1717 | ||
1718 | status = nfsd4_decode_stateid(argp, &fallocate->falloc_stateid); | |
1719 | if (status) | |
1720 | return status; | |
1721 | ||
1722 | READ_BUF(16); | |
1723 | p = xdr_decode_hyper(p, &fallocate->falloc_offset); | |
1724 | xdr_decode_hyper(p, &fallocate->falloc_length); | |
1725 | ||
1726 | DECODE_TAIL; | |
1727 | } | |
1728 | ||
ffa0160a CH |
1729 | static __be32 |
1730 | nfsd4_decode_clone(struct nfsd4_compoundargs *argp, struct nfsd4_clone *clone) | |
1731 | { | |
1732 | DECODE_HEAD; | |
1733 | ||
1734 | status = nfsd4_decode_stateid(argp, &clone->cl_src_stateid); | |
1735 | if (status) | |
1736 | return status; | |
1737 | status = nfsd4_decode_stateid(argp, &clone->cl_dst_stateid); | |
1738 | if (status) | |
1739 | return status; | |
1740 | ||
1741 | READ_BUF(8 + 8 + 8); | |
1742 | p = xdr_decode_hyper(p, &clone->cl_src_pos); | |
1743 | p = xdr_decode_hyper(p, &clone->cl_dst_pos); | |
1744 | p = xdr_decode_hyper(p, &clone->cl_count); | |
1745 | DECODE_TAIL; | |
1746 | } | |
1747 | ||
84e1b21d OK |
1748 | static __be32 nfsd4_decode_nl4_server(struct nfsd4_compoundargs *argp, |
1749 | struct nl4_server *ns) | |
1750 | { | |
1751 | DECODE_HEAD; | |
1752 | struct nfs42_netaddr *naddr; | |
1753 | ||
1754 | READ_BUF(4); | |
1755 | ns->nl4_type = be32_to_cpup(p++); | |
1756 | ||
1757 | /* currently support for 1 inter-server source server */ | |
1758 | switch (ns->nl4_type) { | |
1759 | case NL4_NETADDR: | |
1760 | naddr = &ns->u.nl4_addr; | |
1761 | ||
1762 | READ_BUF(4); | |
1763 | naddr->netid_len = be32_to_cpup(p++); | |
1764 | if (naddr->netid_len > RPCBIND_MAXNETIDLEN) | |
1765 | goto xdr_error; | |
1766 | ||
1767 | READ_BUF(naddr->netid_len + 4); /* 4 for uaddr len */ | |
1768 | COPYMEM(naddr->netid, naddr->netid_len); | |
1769 | ||
1770 | naddr->addr_len = be32_to_cpup(p++); | |
1771 | if (naddr->addr_len > RPCBIND_MAXUADDRLEN) | |
1772 | goto xdr_error; | |
1773 | ||
1774 | READ_BUF(naddr->addr_len); | |
1775 | COPYMEM(naddr->addr, naddr->addr_len); | |
1776 | break; | |
1777 | default: | |
1778 | goto xdr_error; | |
1779 | } | |
1780 | DECODE_TAIL; | |
1781 | } | |
1782 | ||
29ae7f9d AS |
1783 | static __be32 |
1784 | nfsd4_decode_copy(struct nfsd4_compoundargs *argp, struct nfsd4_copy *copy) | |
1785 | { | |
1786 | DECODE_HEAD; | |
84e1b21d OK |
1787 | struct nl4_server *ns_dummy; |
1788 | int i, count; | |
29ae7f9d AS |
1789 | |
1790 | status = nfsd4_decode_stateid(argp, ©->cp_src_stateid); | |
1791 | if (status) | |
1792 | return status; | |
1793 | status = nfsd4_decode_stateid(argp, ©->cp_dst_stateid); | |
1794 | if (status) | |
1795 | return status; | |
1796 | ||
1797 | READ_BUF(8 + 8 + 8 + 4 + 4 + 4); | |
1798 | p = xdr_decode_hyper(p, ©->cp_src_pos); | |
1799 | p = xdr_decode_hyper(p, ©->cp_dst_pos); | |
1800 | p = xdr_decode_hyper(p, ©->cp_count); | |
edcc8452 | 1801 | p++; /* ca_consecutive: we always do consecutive copies */ |
29ae7f9d | 1802 | copy->cp_synchronous = be32_to_cpup(p++); |
84e1b21d OK |
1803 | |
1804 | count = be32_to_cpup(p++); | |
1805 | ||
1806 | copy->cp_intra = false; | |
1807 | if (count == 0) { /* intra-server copy */ | |
1808 | copy->cp_intra = true; | |
1809 | goto intra; | |
1810 | } | |
1811 | ||
1812 | /* decode all the supplied server addresses but use first */ | |
1813 | status = nfsd4_decode_nl4_server(argp, ©->cp_src); | |
1814 | if (status) | |
1815 | return status; | |
1816 | ||
1817 | ns_dummy = kmalloc(sizeof(struct nl4_server), GFP_KERNEL); | |
1818 | if (ns_dummy == NULL) | |
1819 | return nfserrno(-ENOMEM); | |
1820 | for (i = 0; i < count - 1; i++) { | |
1821 | status = nfsd4_decode_nl4_server(argp, ns_dummy); | |
1822 | if (status) { | |
1823 | kfree(ns_dummy); | |
1824 | return status; | |
1825 | } | |
1826 | } | |
1827 | kfree(ns_dummy); | |
1828 | intra: | |
29ae7f9d AS |
1829 | |
1830 | DECODE_TAIL; | |
1831 | } | |
1832 | ||
6308bc98 OK |
1833 | static __be32 |
1834 | nfsd4_decode_offload_status(struct nfsd4_compoundargs *argp, | |
1835 | struct nfsd4_offload_status *os) | |
1836 | { | |
1837 | return nfsd4_decode_stateid(argp, &os->stateid); | |
1838 | } | |
1839 | ||
51911868 OK |
1840 | static __be32 |
1841 | nfsd4_decode_copy_notify(struct nfsd4_compoundargs *argp, | |
1842 | struct nfsd4_copy_notify *cn) | |
1843 | { | |
1844 | int status; | |
1845 | ||
1846 | status = nfsd4_decode_stateid(argp, &cn->cpn_src_stateid); | |
1847 | if (status) | |
1848 | return status; | |
1849 | return nfsd4_decode_nl4_server(argp, &cn->cpn_dst); | |
1850 | } | |
1851 | ||
24bab491 AS |
1852 | static __be32 |
1853 | nfsd4_decode_seek(struct nfsd4_compoundargs *argp, struct nfsd4_seek *seek) | |
1854 | { | |
1855 | DECODE_HEAD; | |
1856 | ||
1857 | status = nfsd4_decode_stateid(argp, &seek->seek_stateid); | |
1858 | if (status) | |
1859 | return status; | |
1860 | ||
1861 | READ_BUF(8 + 4); | |
1862 | p = xdr_decode_hyper(p, &seek->seek_offset); | |
1863 | seek->seek_whence = be32_to_cpup(p); | |
1864 | ||
1865 | DECODE_TAIL; | |
1866 | } | |
1867 | ||
347e0ad9 BH |
1868 | static __be32 |
1869 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1870 | { | |
1871 | return nfs_ok; | |
1872 | } | |
1873 | ||
3c375c6f BH |
1874 | static __be32 |
1875 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1876 | { | |
1e685ec2 | 1877 | return nfserr_notsupp; |
3c375c6f BH |
1878 | } |
1879 | ||
347e0ad9 BH |
1880 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1881 | ||
c1df609d | 1882 | static const nfsd4_dec nfsd4_dec_ops[] = { |
ad1060c8 BF |
1883 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1884 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1885 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1886 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1887 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1888 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1889 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1890 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1891 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1892 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1893 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1894 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1895 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1896 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1897 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1898 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1899 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1900 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1901 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1902 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
e1a90ebd | 1903 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_putpubfh, |
ad1060c8 BF |
1904 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1905 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1906 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1907 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1908 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1909 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1910 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1911 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1912 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1913 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1914 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1915 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1916 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1917 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1918 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1919 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
2db134eb AA |
1920 | |
1921 | /* new operations for NFSv4.1 */ | |
cb73a9f4 | 1922 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_backchannel_ctl, |
1d1bc8f2 | 1923 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
9064caae RD |
1924 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
1925 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
1926 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
e1ca12df | 1927 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, |
9064caae | 1928 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
9cf514cc CH |
1929 | #ifdef CONFIG_NFSD_PNFS |
1930 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_getdeviceinfo, | |
1931 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1932 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_layoutcommit, | |
1933 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_layoutget, | |
1934 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_layoutreturn, | |
1935 | #else | |
9064caae RD |
1936 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, |
1937 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1938 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1939 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1940 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
9cf514cc | 1941 | #endif |
04f4ad16 | 1942 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
9064caae RD |
1943 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
1944 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
17456804 | 1945 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid, |
9064caae | 1946 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
345c2842 | 1947 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, |
4dc6ec00 | 1948 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
87a15a80 AS |
1949 | |
1950 | /* new operations for NFSv4.2 */ | |
95d871f0 | 1951 | [OP_ALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate, |
29ae7f9d | 1952 | [OP_COPY] = (nfsd4_dec)nfsd4_decode_copy, |
51911868 | 1953 | [OP_COPY_NOTIFY] = (nfsd4_dec)nfsd4_decode_copy_notify, |
b0cb9085 | 1954 | [OP_DEALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate, |
87a15a80 AS |
1955 | [OP_IO_ADVISE] = (nfsd4_dec)nfsd4_decode_notsupp, |
1956 | [OP_LAYOUTERROR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1957 | [OP_LAYOUTSTATS] = (nfsd4_dec)nfsd4_decode_notsupp, | |
885e2bf3 | 1958 | [OP_OFFLOAD_CANCEL] = (nfsd4_dec)nfsd4_decode_offload_status, |
6308bc98 | 1959 | [OP_OFFLOAD_STATUS] = (nfsd4_dec)nfsd4_decode_offload_status, |
87a15a80 | 1960 | [OP_READ_PLUS] = (nfsd4_dec)nfsd4_decode_notsupp, |
24bab491 | 1961 | [OP_SEEK] = (nfsd4_dec)nfsd4_decode_seek, |
87a15a80 | 1962 | [OP_WRITE_SAME] = (nfsd4_dec)nfsd4_decode_notsupp, |
ffa0160a | 1963 | [OP_CLONE] = (nfsd4_dec)nfsd4_decode_clone, |
2db134eb AA |
1964 | }; |
1965 | ||
e1a90ebd AS |
1966 | static inline bool |
1967 | nfsd4_opnum_in_range(struct nfsd4_compoundargs *argp, struct nfsd4_op *op) | |
1968 | { | |
8217d146 | 1969 | if (op->opnum < FIRST_NFS4_OP) |
e1a90ebd | 1970 | return false; |
8217d146 | 1971 | else if (argp->minorversion == 0 && op->opnum > LAST_NFS40_OP) |
e1a90ebd | 1972 | return false; |
8217d146 AS |
1973 | else if (argp->minorversion == 1 && op->opnum > LAST_NFS41_OP) |
1974 | return false; | |
1975 | else if (argp->minorversion == 2 && op->opnum > LAST_NFS42_OP) | |
e1a90ebd AS |
1976 | return false; |
1977 | return true; | |
1978 | } | |
f2feb96b | 1979 | |
b37ad28b | 1980 | static __be32 |
1da177e4 LT |
1981 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1982 | { | |
1983 | DECODE_HEAD; | |
1984 | struct nfsd4_op *op; | |
1091006c | 1985 | bool cachethis = false; |
a5cddc88 BF |
1986 | int auth_slack= argp->rqstp->rq_auth_slack; |
1987 | int max_reply = auth_slack + 8; /* opcnt, status */ | |
b0e35fda BF |
1988 | int readcount = 0; |
1989 | int readbytes = 0; | |
1da177e4 LT |
1990 | int i; |
1991 | ||
1da177e4 | 1992 | READ_BUF(4); |
06553991 | 1993 | argp->taglen = be32_to_cpup(p++); |
4aed9c46 | 1994 | READ_BUF(argp->taglen); |
1da177e4 | 1995 | SAVEMEM(argp->tag, argp->taglen); |
4aed9c46 | 1996 | READ_BUF(8); |
06553991 BF |
1997 | argp->minorversion = be32_to_cpup(p++); |
1998 | argp->opcnt = be32_to_cpup(p++); | |
4f0cefbf | 1999 | max_reply += 4 + (XDR_QUADLEN(argp->taglen) << 2); |
1da177e4 LT |
2000 | |
2001 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
2002 | goto xdr_error; | |
0078117c BF |
2003 | /* |
2004 | * NFS4ERR_RESOURCE is a more helpful error than GARBAGE_ARGS | |
2005 | * here, so we return success at the xdr level so that | |
2006 | * nfsd4_proc can handle this is an NFS-level error. | |
2007 | */ | |
2008 | if (argp->opcnt > NFSD_MAX_OPS_PER_COMPOUND) | |
2009 | return 0; | |
1da177e4 | 2010 | |
e8c96f8c | 2011 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
5d6031ca | 2012 | argp->ops = kzalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1da177e4 LT |
2013 | if (!argp->ops) { |
2014 | argp->ops = argp->iops; | |
817cb9d4 | 2015 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
2016 | goto xdr_error; |
2017 | } | |
2018 | } | |
2019 | ||
e1a90ebd | 2020 | if (argp->minorversion > NFSD_SUPPORTED_MINOR_VERSION) |
30cff1ff BH |
2021 | argp->opcnt = 0; |
2022 | ||
1da177e4 LT |
2023 | for (i = 0; i < argp->opcnt; i++) { |
2024 | op = &argp->ops[i]; | |
2025 | op->replay = NULL; | |
2026 | ||
8a61b18c | 2027 | READ_BUF(4); |
06553991 | 2028 | op->opnum = be32_to_cpup(p++); |
1da177e4 | 2029 | |
e1a90ebd AS |
2030 | if (nfsd4_opnum_in_range(argp, op)) |
2031 | op->status = nfsd4_dec_ops[op->opnum](argp, &op->u); | |
347e0ad9 | 2032 | else { |
1da177e4 LT |
2033 | op->opnum = OP_ILLEGAL; |
2034 | op->status = nfserr_op_illegal; | |
1da177e4 | 2035 | } |
f4f9ef4a | 2036 | op->opdesc = OPDESC(op); |
1091006c BF |
2037 | /* |
2038 | * We'll try to cache the result in the DRC if any one | |
2039 | * op in the compound wants to be cached: | |
2040 | */ | |
2041 | cachethis |= nfsd4_cache_this_op(op); | |
6ff40dec | 2042 | |
b0e35fda BF |
2043 | if (op->opnum == OP_READ) { |
2044 | readcount++; | |
2045 | readbytes += nfsd4_max_reply(argp->rqstp, op); | |
2046 | } else | |
2047 | max_reply += nfsd4_max_reply(argp->rqstp, op); | |
f7b43d0c | 2048 | /* |
7323f0d2 KM |
2049 | * OP_LOCK and OP_LOCKT may return a conflicting lock. |
2050 | * (Special case because it will just skip encoding this | |
2051 | * if it runs out of xdr buffer space, and it is the only | |
2052 | * operation that behaves this way.) | |
f7b43d0c | 2053 | */ |
7323f0d2 | 2054 | if (op->opnum == OP_LOCK || op->opnum == OP_LOCKT) |
f7b43d0c | 2055 | max_reply += NFS4_OPAQUE_LIMIT; |
e372ba60 BF |
2056 | |
2057 | if (op->status) { | |
2058 | argp->opcnt = i+1; | |
2059 | break; | |
2060 | } | |
1da177e4 | 2061 | } |
1091006c BF |
2062 | /* Sessions make the DRC unnecessary: */ |
2063 | if (argp->minorversion) | |
2064 | cachethis = false; | |
b0e35fda | 2065 | svc_reserve(argp->rqstp, max_reply + readbytes); |
1091006c | 2066 | argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; |
1da177e4 | 2067 | |
a5cddc88 | 2068 | if (readcount > 1 || max_reply > PAGE_SIZE - auth_slack) |
779fb0f3 | 2069 | clear_bit(RQ_SPLICE_OK, &argp->rqstp->rq_flags); |
b0e35fda | 2070 | |
1da177e4 LT |
2071 | DECODE_TAIL; |
2072 | } | |
1da177e4 | 2073 | |
b8800921 N |
2074 | static __be32 *encode_change(__be32 *p, struct kstat *stat, struct inode *inode, |
2075 | struct svc_export *exp) | |
c654b8a9 | 2076 | { |
b8800921 N |
2077 | if (exp->ex_flags & NFSEXP_V4ROOT) { |
2078 | *p++ = cpu_to_be32(convert_to_wallclock(exp->cd->flush_time)); | |
2079 | *p++ = 0; | |
2080 | } else if (IS_I_VERSION(inode)) { | |
39ca1bf6 | 2081 | p = xdr_encode_hyper(p, nfsd4_change_attribute(stat, inode)); |
c654b8a9 | 2082 | } else { |
d05d5744 BF |
2083 | *p++ = cpu_to_be32(stat->ctime.tv_sec); |
2084 | *p++ = cpu_to_be32(stat->ctime.tv_nsec); | |
c654b8a9 | 2085 | } |
d05d5744 | 2086 | return p; |
c654b8a9 BF |
2087 | } |
2088 | ||
16945141 BF |
2089 | /* |
2090 | * ctime (in NFSv4, time_metadata) is not writeable, and the client | |
2091 | * doesn't really care what resolution could theoretically be stored by | |
2092 | * the filesystem. | |
2093 | * | |
2094 | * The client cares how close together changes can be while still | |
2095 | * guaranteeing ctime changes. For most filesystems (which have | |
2096 | * timestamps with nanosecond fields) that is limited by the resolution | |
2097 | * of the time returned from current_time() (which I'm assuming to be | |
2098 | * 1/HZ). | |
2099 | */ | |
2100 | static __be32 *encode_time_delta(__be32 *p, struct inode *inode) | |
2101 | { | |
e4598e38 | 2102 | struct timespec64 ts; |
16945141 BF |
2103 | u32 ns; |
2104 | ||
2105 | ns = max_t(u32, NSEC_PER_SEC/HZ, inode->i_sb->s_time_gran); | |
e4598e38 | 2106 | ts = ns_to_timespec64(ns); |
16945141 BF |
2107 | |
2108 | p = xdr_encode_hyper(p, ts.tv_sec); | |
2109 | *p++ = cpu_to_be32(ts.tv_nsec); | |
2110 | ||
2111 | return p; | |
2112 | } | |
2113 | ||
d05d5744 | 2114 | static __be32 *encode_cinfo(__be32 *p, struct nfsd4_change_info *c) |
c654b8a9 | 2115 | { |
d05d5744 | 2116 | *p++ = cpu_to_be32(c->atomic); |
c654b8a9 | 2117 | if (c->change_supported) { |
d05d5744 BF |
2118 | p = xdr_encode_hyper(p, c->before_change); |
2119 | p = xdr_encode_hyper(p, c->after_change); | |
c654b8a9 | 2120 | } else { |
d05d5744 BF |
2121 | *p++ = cpu_to_be32(c->before_ctime_sec); |
2122 | *p++ = cpu_to_be32(c->before_ctime_nsec); | |
2123 | *p++ = cpu_to_be32(c->after_ctime_sec); | |
2124 | *p++ = cpu_to_be32(c->after_ctime_nsec); | |
c654b8a9 | 2125 | } |
d05d5744 | 2126 | return p; |
c654b8a9 | 2127 | } |
1da177e4 | 2128 | |
81c3f413 | 2129 | /* Encode as an array of strings the string given with components |
e7a0444a | 2130 | * separated @sep, escaped with esc_enter and esc_exit. |
81c3f413 | 2131 | */ |
ddd1ea56 BF |
2132 | static __be32 nfsd4_encode_components_esc(struct xdr_stream *xdr, char sep, |
2133 | char *components, char esc_enter, | |
2134 | char esc_exit) | |
81c3f413 | 2135 | { |
ddd1ea56 | 2136 | __be32 *p; |
082d4bd7 BF |
2137 | __be32 pathlen; |
2138 | int pathlen_offset; | |
81c3f413 | 2139 | int strlen, count=0; |
e7a0444a | 2140 | char *str, *end, *next; |
81c3f413 BF |
2141 | |
2142 | dprintk("nfsd4_encode_components(%s)\n", components); | |
082d4bd7 BF |
2143 | |
2144 | pathlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
2145 | p = xdr_reserve_space(xdr, 4); |
2146 | if (!p) | |
81c3f413 | 2147 | return nfserr_resource; |
082d4bd7 BF |
2148 | p++; /* We will fill this in with @count later */ |
2149 | ||
81c3f413 BF |
2150 | end = str = components; |
2151 | while (*end) { | |
e7a0444a WAA |
2152 | bool found_esc = false; |
2153 | ||
2154 | /* try to parse as esc_start, ..., esc_end, sep */ | |
2155 | if (*str == esc_enter) { | |
2156 | for (; *end && (*end != esc_exit); end++) | |
2157 | /* find esc_exit or end of string */; | |
2158 | next = end + 1; | |
2159 | if (*end && (!*next || *next == sep)) { | |
2160 | str++; | |
2161 | found_esc = true; | |
2162 | } | |
2163 | } | |
2164 | ||
2165 | if (!found_esc) | |
2166 | for (; *end && (*end != sep); end++) | |
2167 | /* find sep or end of string */; | |
2168 | ||
81c3f413 BF |
2169 | strlen = end - str; |
2170 | if (strlen) { | |
ddd1ea56 BF |
2171 | p = xdr_reserve_space(xdr, strlen + 4); |
2172 | if (!p) | |
81c3f413 | 2173 | return nfserr_resource; |
0c0c267b | 2174 | p = xdr_encode_opaque(p, str, strlen); |
81c3f413 BF |
2175 | count++; |
2176 | } | |
2177 | else | |
2178 | end++; | |
5a64e569 BC |
2179 | if (found_esc) |
2180 | end = next; | |
2181 | ||
81c3f413 BF |
2182 | str = end; |
2183 | } | |
bf7491f1 | 2184 | pathlen = htonl(count); |
082d4bd7 | 2185 | write_bytes_to_xdr_buf(xdr->buf, pathlen_offset, &pathlen, 4); |
81c3f413 BF |
2186 | return 0; |
2187 | } | |
2188 | ||
e7a0444a WAA |
2189 | /* Encode as an array of strings the string given with components |
2190 | * separated @sep. | |
2191 | */ | |
ddd1ea56 BF |
2192 | static __be32 nfsd4_encode_components(struct xdr_stream *xdr, char sep, |
2193 | char *components) | |
e7a0444a | 2194 | { |
ddd1ea56 | 2195 | return nfsd4_encode_components_esc(xdr, sep, components, 0, 0); |
e7a0444a WAA |
2196 | } |
2197 | ||
81c3f413 BF |
2198 | /* |
2199 | * encode a location element of a fs_locations structure | |
2200 | */ | |
ddd1ea56 BF |
2201 | static __be32 nfsd4_encode_fs_location4(struct xdr_stream *xdr, |
2202 | struct nfsd4_fs_location *location) | |
81c3f413 | 2203 | { |
b37ad28b | 2204 | __be32 status; |
81c3f413 | 2205 | |
ddd1ea56 | 2206 | status = nfsd4_encode_components_esc(xdr, ':', location->hosts, |
e7a0444a | 2207 | '[', ']'); |
81c3f413 BF |
2208 | if (status) |
2209 | return status; | |
ddd1ea56 | 2210 | status = nfsd4_encode_components(xdr, '/', location->path); |
81c3f413 BF |
2211 | if (status) |
2212 | return status; | |
81c3f413 BF |
2213 | return 0; |
2214 | } | |
2215 | ||
2216 | /* | |
ed748aac | 2217 | * Encode a path in RFC3530 'pathname4' format |
81c3f413 | 2218 | */ |
ddd1ea56 BF |
2219 | static __be32 nfsd4_encode_path(struct xdr_stream *xdr, |
2220 | const struct path *root, | |
2221 | const struct path *path) | |
81c3f413 | 2222 | { |
301f0268 | 2223 | struct path cur = *path; |
ddd1ea56 | 2224 | __be32 *p; |
ed748aac TM |
2225 | struct dentry **components = NULL; |
2226 | unsigned int ncomponents = 0; | |
2227 | __be32 err = nfserr_jukebox; | |
81c3f413 | 2228 | |
ed748aac | 2229 | dprintk("nfsd4_encode_components("); |
81c3f413 | 2230 | |
ed748aac TM |
2231 | path_get(&cur); |
2232 | /* First walk the path up to the nfsd root, and store the | |
2233 | * dentries/path components in an array. | |
2234 | */ | |
2235 | for (;;) { | |
b77a4b2e | 2236 | if (path_equal(&cur, root)) |
ed748aac TM |
2237 | break; |
2238 | if (cur.dentry == cur.mnt->mnt_root) { | |
2239 | if (follow_up(&cur)) | |
2240 | continue; | |
2241 | goto out_free; | |
2242 | } | |
2243 | if ((ncomponents & 15) == 0) { | |
2244 | struct dentry **new; | |
2245 | new = krealloc(components, | |
2246 | sizeof(*new) * (ncomponents + 16), | |
2247 | GFP_KERNEL); | |
2248 | if (!new) | |
2249 | goto out_free; | |
2250 | components = new; | |
2251 | } | |
2252 | components[ncomponents++] = cur.dentry; | |
2253 | cur.dentry = dget_parent(cur.dentry); | |
2254 | } | |
ddd1ea56 BF |
2255 | err = nfserr_resource; |
2256 | p = xdr_reserve_space(xdr, 4); | |
2257 | if (!p) | |
ed748aac | 2258 | goto out_free; |
c373b0a4 | 2259 | *p++ = cpu_to_be32(ncomponents); |
ed748aac TM |
2260 | |
2261 | while (ncomponents) { | |
2262 | struct dentry *dentry = components[ncomponents - 1]; | |
301f0268 | 2263 | unsigned int len; |
ed748aac | 2264 | |
301f0268 AV |
2265 | spin_lock(&dentry->d_lock); |
2266 | len = dentry->d_name.len; | |
ddd1ea56 BF |
2267 | p = xdr_reserve_space(xdr, len + 4); |
2268 | if (!p) { | |
301f0268 | 2269 | spin_unlock(&dentry->d_lock); |
ed748aac | 2270 | goto out_free; |
301f0268 | 2271 | } |
0c0c267b | 2272 | p = xdr_encode_opaque(p, dentry->d_name.name, len); |
a455589f | 2273 | dprintk("/%pd", dentry); |
301f0268 | 2274 | spin_unlock(&dentry->d_lock); |
ed748aac TM |
2275 | dput(dentry); |
2276 | ncomponents--; | |
81c3f413 | 2277 | } |
ed748aac | 2278 | |
ed748aac TM |
2279 | err = 0; |
2280 | out_free: | |
2281 | dprintk(")\n"); | |
2282 | while (ncomponents) | |
2283 | dput(components[--ncomponents]); | |
2284 | kfree(components); | |
2285 | path_put(&cur); | |
2286 | return err; | |
2287 | } | |
2288 | ||
ddd1ea56 BF |
2289 | static __be32 nfsd4_encode_fsloc_fsroot(struct xdr_stream *xdr, |
2290 | struct svc_rqst *rqstp, const struct path *path) | |
ed748aac TM |
2291 | { |
2292 | struct svc_export *exp_ps; | |
2293 | __be32 res; | |
2294 | ||
2295 | exp_ps = rqst_find_fsidzero_export(rqstp); | |
2296 | if (IS_ERR(exp_ps)) | |
2297 | return nfserrno(PTR_ERR(exp_ps)); | |
ddd1ea56 | 2298 | res = nfsd4_encode_path(xdr, &exp_ps->ex_path, path); |
ed748aac TM |
2299 | exp_put(exp_ps); |
2300 | return res; | |
81c3f413 BF |
2301 | } |
2302 | ||
2303 | /* | |
2304 | * encode a fs_locations structure | |
2305 | */ | |
ddd1ea56 BF |
2306 | static __be32 nfsd4_encode_fs_locations(struct xdr_stream *xdr, |
2307 | struct svc_rqst *rqstp, struct svc_export *exp) | |
81c3f413 | 2308 | { |
b37ad28b | 2309 | __be32 status; |
cc45f017 | 2310 | int i; |
ddd1ea56 | 2311 | __be32 *p; |
81c3f413 | 2312 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
81c3f413 | 2313 | |
ddd1ea56 | 2314 | status = nfsd4_encode_fsloc_fsroot(xdr, rqstp, &exp->ex_path); |
81c3f413 BF |
2315 | if (status) |
2316 | return status; | |
ddd1ea56 BF |
2317 | p = xdr_reserve_space(xdr, 4); |
2318 | if (!p) | |
81c3f413 | 2319 | return nfserr_resource; |
c373b0a4 | 2320 | *p++ = cpu_to_be32(fslocs->locations_count); |
81c3f413 | 2321 | for (i=0; i<fslocs->locations_count; i++) { |
ddd1ea56 | 2322 | status = nfsd4_encode_fs_location4(xdr, &fslocs->locations[i]); |
81c3f413 BF |
2323 | if (status) |
2324 | return status; | |
2325 | } | |
81c3f413 BF |
2326 | return 0; |
2327 | } | |
1da177e4 | 2328 | |
3d2544b1 BF |
2329 | static u32 nfs4_file_type(umode_t mode) |
2330 | { | |
2331 | switch (mode & S_IFMT) { | |
2332 | case S_IFIFO: return NF4FIFO; | |
2333 | case S_IFCHR: return NF4CHR; | |
2334 | case S_IFDIR: return NF4DIR; | |
2335 | case S_IFBLK: return NF4BLK; | |
2336 | case S_IFLNK: return NF4LNK; | |
2337 | case S_IFREG: return NF4REG; | |
2338 | case S_IFSOCK: return NF4SOCK; | |
2339 | default: return NF4BAD; | |
2340 | }; | |
2341 | } | |
1da177e4 | 2342 | |
b37ad28b | 2343 | static inline __be32 |
ddd1ea56 BF |
2344 | nfsd4_encode_aclname(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2345 | struct nfs4_ace *ace) | |
1da177e4 | 2346 | { |
3554116d | 2347 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ddd1ea56 | 2348 | return nfs4_acl_write_who(xdr, ace->whotype); |
3554116d | 2349 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
ddd1ea56 | 2350 | return nfsd4_encode_group(xdr, rqstp, ace->who_gid); |
3554116d | 2351 | else |
ddd1ea56 | 2352 | return nfsd4_encode_user(xdr, rqstp, ace->who_uid); |
1da177e4 LT |
2353 | } |
2354 | ||
6896f15a | 2355 | static inline __be32 |
8a4c3926 | 2356 | nfsd4_encode_layout_types(struct xdr_stream *xdr, u32 layout_types) |
6896f15a | 2357 | { |
8a4c3926 JL |
2358 | __be32 *p; |
2359 | unsigned long i = hweight_long(layout_types); | |
6896f15a | 2360 | |
8a4c3926 JL |
2361 | p = xdr_reserve_space(xdr, 4 + 4 * i); |
2362 | if (!p) | |
2363 | return nfserr_resource; | |
2364 | ||
2365 | *p++ = cpu_to_be32(i); | |
2366 | ||
2367 | for (i = LAYOUT_NFSV4_1_FILES; i < LAYOUT_TYPE_MAX; ++i) | |
2368 | if (layout_types & (1 << i)) | |
2369 | *p++ = cpu_to_be32(i); | |
6896f15a KM |
2370 | |
2371 | return 0; | |
2372 | } | |
2373 | ||
42ca0993 BF |
2374 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
2375 | FATTR4_WORD0_RDATTR_ERROR) | |
2376 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
c2227a39 | 2377 | #define WORD2_ABSENT_FS_ATTRS 0 |
42ca0993 | 2378 | |
18032ca0 DQ |
2379 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
2380 | static inline __be32 | |
ddd1ea56 BF |
2381 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2382 | void *context, int len) | |
18032ca0 | 2383 | { |
ddd1ea56 | 2384 | __be32 *p; |
18032ca0 | 2385 | |
ddd1ea56 BF |
2386 | p = xdr_reserve_space(xdr, len + 4 + 4 + 4); |
2387 | if (!p) | |
18032ca0 DQ |
2388 | return nfserr_resource; |
2389 | ||
2390 | /* | |
2391 | * For now we use a 0 here to indicate the null translation; in | |
2392 | * the future we may place a call to translation code here. | |
2393 | */ | |
c373b0a4 BF |
2394 | *p++ = cpu_to_be32(0); /* lfs */ |
2395 | *p++ = cpu_to_be32(0); /* pi */ | |
18032ca0 | 2396 | p = xdr_encode_opaque(p, context, len); |
18032ca0 DQ |
2397 | return 0; |
2398 | } | |
2399 | #else | |
2400 | static inline __be32 | |
ddd1ea56 BF |
2401 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2402 | void *context, int len) | |
18032ca0 DQ |
2403 | { return 0; } |
2404 | #endif | |
2405 | ||
c2227a39 | 2406 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *bmval2, u32 *rdattr_err) |
42ca0993 BF |
2407 | { |
2408 | /* As per referral draft: */ | |
2409 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
2410 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
2411 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
2412 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
2413 | *rdattr_err = NFSERR_MOVED; | |
2414 | else | |
2415 | return nfserr_moved; | |
2416 | } | |
2417 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
2418 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
c2227a39 | 2419 | *bmval2 &= WORD2_ABSENT_FS_ATTRS; |
42ca0993 BF |
2420 | return 0; |
2421 | } | |
1da177e4 | 2422 | |
ae7095a7 BF |
2423 | |
2424 | static int get_parent_attributes(struct svc_export *exp, struct kstat *stat) | |
2425 | { | |
2426 | struct path path = exp->ex_path; | |
2427 | int err; | |
2428 | ||
2429 | path_get(&path); | |
2430 | while (follow_up(&path)) { | |
2431 | if (path.dentry != path.mnt->mnt_root) | |
2432 | break; | |
2433 | } | |
a528d35e | 2434 | err = vfs_getattr(&path, stat, STATX_BASIC_STATS, AT_STATX_SYNC_AS_STAT); |
ae7095a7 BF |
2435 | path_put(&path); |
2436 | return err; | |
2437 | } | |
2438 | ||
75976de6 KM |
2439 | static __be32 |
2440 | nfsd4_encode_bitmap(struct xdr_stream *xdr, u32 bmval0, u32 bmval1, u32 bmval2) | |
2441 | { | |
2442 | __be32 *p; | |
2443 | ||
2444 | if (bmval2) { | |
2445 | p = xdr_reserve_space(xdr, 16); | |
2446 | if (!p) | |
2447 | goto out_resource; | |
2448 | *p++ = cpu_to_be32(3); | |
2449 | *p++ = cpu_to_be32(bmval0); | |
2450 | *p++ = cpu_to_be32(bmval1); | |
2451 | *p++ = cpu_to_be32(bmval2); | |
2452 | } else if (bmval1) { | |
2453 | p = xdr_reserve_space(xdr, 12); | |
2454 | if (!p) | |
2455 | goto out_resource; | |
2456 | *p++ = cpu_to_be32(2); | |
2457 | *p++ = cpu_to_be32(bmval0); | |
2458 | *p++ = cpu_to_be32(bmval1); | |
2459 | } else { | |
2460 | p = xdr_reserve_space(xdr, 8); | |
2461 | if (!p) | |
2462 | goto out_resource; | |
2463 | *p++ = cpu_to_be32(1); | |
2464 | *p++ = cpu_to_be32(bmval0); | |
2465 | } | |
2466 | ||
2467 | return 0; | |
2468 | out_resource: | |
2469 | return nfserr_resource; | |
2470 | } | |
2471 | ||
1da177e4 LT |
2472 | /* |
2473 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
2474 | * ourselves. | |
1da177e4 | 2475 | */ |
da2ebce6 | 2476 | static __be32 |
d5184658 BF |
2477 | nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp, |
2478 | struct svc_export *exp, | |
2479 | struct dentry *dentry, u32 *bmval, | |
406a7ea9 | 2480 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
2481 | { |
2482 | u32 bmval0 = bmval[0]; | |
2483 | u32 bmval1 = bmval[1]; | |
7e705706 | 2484 | u32 bmval2 = bmval[2]; |
1da177e4 | 2485 | struct kstat stat; |
d50e6136 | 2486 | struct svc_fh *tempfh = NULL; |
1da177e4 | 2487 | struct kstatfs statfs; |
ddd1ea56 | 2488 | __be32 *p; |
1fcea5b2 | 2489 | int starting_len = xdr->buf->len; |
082d4bd7 BF |
2490 | int attrlen_offset; |
2491 | __be32 attrlen; | |
1da177e4 LT |
2492 | u32 dummy; |
2493 | u64 dummy64; | |
42ca0993 | 2494 | u32 rdattr_err = 0; |
b37ad28b | 2495 | __be32 status; |
b8dd7b9a | 2496 | int err; |
1da177e4 | 2497 | struct nfs4_acl *acl = NULL; |
0ab88ca4 | 2498 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
18032ca0 DQ |
2499 | void *context = NULL; |
2500 | int contextlen; | |
0ab88ca4 | 2501 | #endif |
18032ca0 | 2502 | bool contextsupport = false; |
7e705706 AA |
2503 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
2504 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
2505 | struct path path = { |
2506 | .mnt = exp->ex_path.mnt, | |
2507 | .dentry = dentry, | |
2508 | }; | |
3d733711 | 2509 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
1da177e4 LT |
2510 | |
2511 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
916d2d84 | 2512 | BUG_ON(!nfsd_attrs_supported(minorversion, bmval)); |
1da177e4 | 2513 | |
42ca0993 | 2514 | if (exp->ex_fslocs.migrated) { |
c2227a39 | 2515 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &bmval2, &rdattr_err); |
42ca0993 BF |
2516 | if (status) |
2517 | goto out; | |
2518 | } | |
2519 | ||
a528d35e | 2520 | err = vfs_getattr(&path, &stat, STATX_BASIC_STATS, AT_STATX_SYNC_AS_STAT); |
b8dd7b9a | 2521 | if (err) |
1da177e4 | 2522 | goto out_nfserr; |
12337901 CH |
2523 | if ((bmval0 & (FATTR4_WORD0_FILES_AVAIL | FATTR4_WORD0_FILES_FREE | |
2524 | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
2525 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
2526 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 2527 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 2528 | if (err) |
1da177e4 LT |
2529 | goto out_nfserr; |
2530 | } | |
2531 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
d50e6136 BF |
2532 | tempfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); |
2533 | status = nfserr_jukebox; | |
2534 | if (!tempfh) | |
2535 | goto out; | |
2536 | fh_init(tempfh, NFS4_FHSIZE); | |
2537 | status = fh_compose(tempfh, exp, dentry, NULL); | |
1da177e4 LT |
2538 | if (status) |
2539 | goto out; | |
d50e6136 | 2540 | fhp = tempfh; |
1da177e4 | 2541 | } |
0c9d65e7 | 2542 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 2543 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
0c9d65e7 AG |
2544 | if (err == -EOPNOTSUPP) |
2545 | bmval0 &= ~FATTR4_WORD0_ACL; | |
2546 | else if (err == -EINVAL) { | |
2547 | status = nfserr_attrnotsupp; | |
2548 | goto out; | |
2549 | } else if (err != 0) | |
2550 | goto out_nfserr; | |
1da177e4 | 2551 | } |
1da177e4 | 2552 | |
18032ca0 | 2553 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
c2227a39 KM |
2554 | if ((bmval2 & FATTR4_WORD2_SECURITY_LABEL) || |
2555 | bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
32ddd944 BF |
2556 | if (exp->ex_flags & NFSEXP_SECURITY_LABEL) |
2557 | err = security_inode_getsecctx(d_inode(dentry), | |
18032ca0 | 2558 | &context, &contextlen); |
32ddd944 BF |
2559 | else |
2560 | err = -EOPNOTSUPP; | |
18032ca0 DQ |
2561 | contextsupport = (err == 0); |
2562 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { | |
2563 | if (err == -EOPNOTSUPP) | |
2564 | bmval2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2565 | else if (err) | |
2566 | goto out_nfserr; | |
2567 | } | |
2568 | } | |
2569 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ | |
2570 | ||
75976de6 KM |
2571 | status = nfsd4_encode_bitmap(xdr, bmval0, bmval1, bmval2); |
2572 | if (status) | |
2573 | goto out; | |
082d4bd7 BF |
2574 | |
2575 | attrlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
2576 | p = xdr_reserve_space(xdr, 4); |
2577 | if (!p) | |
2578 | goto out_resource; | |
082d4bd7 | 2579 | p++; /* to be backfilled later */ |
1da177e4 LT |
2580 | |
2581 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
dcd20869 BF |
2582 | u32 supp[3]; |
2583 | ||
2584 | memcpy(supp, nfsd_suppattrs[minorversion], sizeof(supp)); | |
7e705706 | 2585 | |
0c9d65e7 | 2586 | if (!IS_POSIXACL(dentry->d_inode)) |
916d2d84 | 2587 | supp[0] &= ~FATTR4_WORD0_ACL; |
18032ca0 | 2588 | if (!contextsupport) |
916d2d84 BF |
2589 | supp[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
2590 | if (!supp[2]) { | |
ddd1ea56 BF |
2591 | p = xdr_reserve_space(xdr, 12); |
2592 | if (!p) | |
2b44f1ba | 2593 | goto out_resource; |
c373b0a4 | 2594 | *p++ = cpu_to_be32(2); |
916d2d84 BF |
2595 | *p++ = cpu_to_be32(supp[0]); |
2596 | *p++ = cpu_to_be32(supp[1]); | |
7e705706 | 2597 | } else { |
ddd1ea56 BF |
2598 | p = xdr_reserve_space(xdr, 16); |
2599 | if (!p) | |
2b44f1ba | 2600 | goto out_resource; |
c373b0a4 | 2601 | *p++ = cpu_to_be32(3); |
916d2d84 BF |
2602 | *p++ = cpu_to_be32(supp[0]); |
2603 | *p++ = cpu_to_be32(supp[1]); | |
2604 | *p++ = cpu_to_be32(supp[2]); | |
7e705706 | 2605 | } |
1da177e4 LT |
2606 | } |
2607 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
ddd1ea56 BF |
2608 | p = xdr_reserve_space(xdr, 4); |
2609 | if (!p) | |
1da177e4 | 2610 | goto out_resource; |
3d2544b1 | 2611 | dummy = nfs4_file_type(stat.mode); |
6b6d8137 BF |
2612 | if (dummy == NF4BAD) { |
2613 | status = nfserr_serverfault; | |
2614 | goto out; | |
2615 | } | |
c373b0a4 | 2616 | *p++ = cpu_to_be32(dummy); |
1da177e4 LT |
2617 | } |
2618 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
ddd1ea56 BF |
2619 | p = xdr_reserve_space(xdr, 4); |
2620 | if (!p) | |
1da177e4 | 2621 | goto out_resource; |
49640001 | 2622 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
c373b0a4 | 2623 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT); |
49640001 | 2624 | else |
c373b0a4 BF |
2625 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT| |
2626 | NFS4_FH_VOL_RENAME); | |
1da177e4 LT |
2627 | } |
2628 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
ddd1ea56 BF |
2629 | p = xdr_reserve_space(xdr, 8); |
2630 | if (!p) | |
1da177e4 | 2631 | goto out_resource; |
b8800921 | 2632 | p = encode_change(p, &stat, d_inode(dentry), exp); |
1da177e4 LT |
2633 | } |
2634 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
ddd1ea56 BF |
2635 | p = xdr_reserve_space(xdr, 8); |
2636 | if (!p) | |
1da177e4 | 2637 | goto out_resource; |
b64c7f3b | 2638 | p = xdr_encode_hyper(p, stat.size); |
1da177e4 LT |
2639 | } |
2640 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
ddd1ea56 BF |
2641 | p = xdr_reserve_space(xdr, 4); |
2642 | if (!p) | |
1da177e4 | 2643 | goto out_resource; |
c373b0a4 | 2644 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2645 | } |
2646 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
ddd1ea56 BF |
2647 | p = xdr_reserve_space(xdr, 4); |
2648 | if (!p) | |
1da177e4 | 2649 | goto out_resource; |
c373b0a4 | 2650 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2651 | } |
2652 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
ddd1ea56 BF |
2653 | p = xdr_reserve_space(xdr, 4); |
2654 | if (!p) | |
1da177e4 | 2655 | goto out_resource; |
c373b0a4 | 2656 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2657 | } |
2658 | if (bmval0 & FATTR4_WORD0_FSID) { | |
ddd1ea56 BF |
2659 | p = xdr_reserve_space(xdr, 16); |
2660 | if (!p) | |
1da177e4 | 2661 | goto out_resource; |
42ca0993 | 2662 | if (exp->ex_fslocs.migrated) { |
b64c7f3b BF |
2663 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MAJOR); |
2664 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
2665 | } else switch(fsid_source(fhp)) { |
2666 | case FSIDSOURCE_FSID: | |
b64c7f3b BF |
2667 | p = xdr_encode_hyper(p, (u64)exp->ex_fsid); |
2668 | p = xdr_encode_hyper(p, (u64)0); | |
af6a4e28 N |
2669 | break; |
2670 | case FSIDSOURCE_DEV: | |
c373b0a4 BF |
2671 | *p++ = cpu_to_be32(0); |
2672 | *p++ = cpu_to_be32(MAJOR(stat.dev)); | |
2673 | *p++ = cpu_to_be32(0); | |
2674 | *p++ = cpu_to_be32(MINOR(stat.dev)); | |
af6a4e28 N |
2675 | break; |
2676 | case FSIDSOURCE_UUID: | |
94eb3689 KM |
2677 | p = xdr_encode_opaque_fixed(p, exp->ex_uuid, |
2678 | EX_UUID_LEN); | |
af6a4e28 | 2679 | break; |
1da177e4 LT |
2680 | } |
2681 | } | |
2682 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
ddd1ea56 BF |
2683 | p = xdr_reserve_space(xdr, 4); |
2684 | if (!p) | |
1da177e4 | 2685 | goto out_resource; |
c373b0a4 | 2686 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2687 | } |
2688 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
ddd1ea56 BF |
2689 | p = xdr_reserve_space(xdr, 4); |
2690 | if (!p) | |
1da177e4 | 2691 | goto out_resource; |
c373b0a4 | 2692 | *p++ = cpu_to_be32(nn->nfsd4_lease); |
1da177e4 LT |
2693 | } |
2694 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
ddd1ea56 BF |
2695 | p = xdr_reserve_space(xdr, 4); |
2696 | if (!p) | |
1da177e4 | 2697 | goto out_resource; |
c373b0a4 | 2698 | *p++ = cpu_to_be32(rdattr_err); |
1da177e4 LT |
2699 | } |
2700 | if (bmval0 & FATTR4_WORD0_ACL) { | |
2701 | struct nfs4_ace *ace; | |
1da177e4 LT |
2702 | |
2703 | if (acl == NULL) { | |
ddd1ea56 BF |
2704 | p = xdr_reserve_space(xdr, 4); |
2705 | if (!p) | |
1da177e4 LT |
2706 | goto out_resource; |
2707 | ||
c373b0a4 | 2708 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2709 | goto out_acl; |
2710 | } | |
ddd1ea56 BF |
2711 | p = xdr_reserve_space(xdr, 4); |
2712 | if (!p) | |
1da177e4 | 2713 | goto out_resource; |
c373b0a4 | 2714 | *p++ = cpu_to_be32(acl->naces); |
1da177e4 | 2715 | |
28e05dd8 | 2716 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
ddd1ea56 BF |
2717 | p = xdr_reserve_space(xdr, 4*3); |
2718 | if (!p) | |
1da177e4 | 2719 | goto out_resource; |
c373b0a4 BF |
2720 | *p++ = cpu_to_be32(ace->type); |
2721 | *p++ = cpu_to_be32(ace->flag); | |
2722 | *p++ = cpu_to_be32(ace->access_mask & | |
2723 | NFS4_ACE_MASK_ALL); | |
ddd1ea56 | 2724 | status = nfsd4_encode_aclname(xdr, rqstp, ace); |
1da177e4 LT |
2725 | if (status) |
2726 | goto out; | |
2727 | } | |
2728 | } | |
2729 | out_acl: | |
2730 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
ddd1ea56 BF |
2731 | p = xdr_reserve_space(xdr, 4); |
2732 | if (!p) | |
1da177e4 | 2733 | goto out_resource; |
0c9d65e7 | 2734 | *p++ = cpu_to_be32(IS_POSIXACL(dentry->d_inode) ? |
1da177e4 LT |
2735 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); |
2736 | } | |
2737 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
ddd1ea56 BF |
2738 | p = xdr_reserve_space(xdr, 4); |
2739 | if (!p) | |
1da177e4 | 2740 | goto out_resource; |
c373b0a4 | 2741 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2742 | } |
2743 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
ddd1ea56 BF |
2744 | p = xdr_reserve_space(xdr, 4); |
2745 | if (!p) | |
1da177e4 | 2746 | goto out_resource; |
c373b0a4 | 2747 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2748 | } |
2749 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
ddd1ea56 BF |
2750 | p = xdr_reserve_space(xdr, 4); |
2751 | if (!p) | |
1da177e4 | 2752 | goto out_resource; |
c373b0a4 | 2753 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2754 | } |
2755 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
ddd1ea56 BF |
2756 | p = xdr_reserve_space(xdr, 4); |
2757 | if (!p) | |
1da177e4 | 2758 | goto out_resource; |
c373b0a4 | 2759 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2760 | } |
2761 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
ddd1ea56 BF |
2762 | p = xdr_reserve_space(xdr, fhp->fh_handle.fh_size + 4); |
2763 | if (!p) | |
1da177e4 | 2764 | goto out_resource; |
0c0c267b BF |
2765 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, |
2766 | fhp->fh_handle.fh_size); | |
1da177e4 LT |
2767 | } |
2768 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
ddd1ea56 BF |
2769 | p = xdr_reserve_space(xdr, 8); |
2770 | if (!p) | |
1da177e4 | 2771 | goto out_resource; |
b64c7f3b | 2772 | p = xdr_encode_hyper(p, stat.ino); |
1da177e4 LT |
2773 | } |
2774 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
ddd1ea56 BF |
2775 | p = xdr_reserve_space(xdr, 8); |
2776 | if (!p) | |
1da177e4 | 2777 | goto out_resource; |
b64c7f3b | 2778 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
2779 | } |
2780 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
ddd1ea56 BF |
2781 | p = xdr_reserve_space(xdr, 8); |
2782 | if (!p) | |
1da177e4 | 2783 | goto out_resource; |
b64c7f3b | 2784 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
2785 | } |
2786 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
ddd1ea56 BF |
2787 | p = xdr_reserve_space(xdr, 8); |
2788 | if (!p) | |
1da177e4 | 2789 | goto out_resource; |
b64c7f3b | 2790 | p = xdr_encode_hyper(p, (u64) statfs.f_files); |
1da177e4 | 2791 | } |
81c3f413 | 2792 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
ddd1ea56 | 2793 | status = nfsd4_encode_fs_locations(xdr, rqstp, exp); |
81c3f413 BF |
2794 | if (status) |
2795 | goto out; | |
2796 | } | |
1da177e4 | 2797 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
ddd1ea56 BF |
2798 | p = xdr_reserve_space(xdr, 4); |
2799 | if (!p) | |
1da177e4 | 2800 | goto out_resource; |
c373b0a4 | 2801 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2802 | } |
2803 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
ddd1ea56 BF |
2804 | p = xdr_reserve_space(xdr, 8); |
2805 | if (!p) | |
1da177e4 | 2806 | goto out_resource; |
b64c7f3b | 2807 | p = xdr_encode_hyper(p, exp->ex_path.mnt->mnt_sb->s_maxbytes); |
1da177e4 LT |
2808 | } |
2809 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
ddd1ea56 BF |
2810 | p = xdr_reserve_space(xdr, 4); |
2811 | if (!p) | |
1da177e4 | 2812 | goto out_resource; |
c373b0a4 | 2813 | *p++ = cpu_to_be32(255); |
1da177e4 LT |
2814 | } |
2815 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
ddd1ea56 BF |
2816 | p = xdr_reserve_space(xdr, 4); |
2817 | if (!p) | |
1da177e4 | 2818 | goto out_resource; |
c373b0a4 | 2819 | *p++ = cpu_to_be32(statfs.f_namelen); |
1da177e4 LT |
2820 | } |
2821 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
ddd1ea56 BF |
2822 | p = xdr_reserve_space(xdr, 8); |
2823 | if (!p) | |
1da177e4 | 2824 | goto out_resource; |
b64c7f3b | 2825 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2826 | } |
2827 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
ddd1ea56 BF |
2828 | p = xdr_reserve_space(xdr, 8); |
2829 | if (!p) | |
1da177e4 | 2830 | goto out_resource; |
b64c7f3b | 2831 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2832 | } |
2833 | if (bmval1 & FATTR4_WORD1_MODE) { | |
ddd1ea56 BF |
2834 | p = xdr_reserve_space(xdr, 4); |
2835 | if (!p) | |
1da177e4 | 2836 | goto out_resource; |
c373b0a4 | 2837 | *p++ = cpu_to_be32(stat.mode & S_IALLUGO); |
1da177e4 LT |
2838 | } |
2839 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
ddd1ea56 BF |
2840 | p = xdr_reserve_space(xdr, 4); |
2841 | if (!p) | |
1da177e4 | 2842 | goto out_resource; |
c373b0a4 | 2843 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2844 | } |
2845 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
ddd1ea56 BF |
2846 | p = xdr_reserve_space(xdr, 4); |
2847 | if (!p) | |
1da177e4 | 2848 | goto out_resource; |
c373b0a4 | 2849 | *p++ = cpu_to_be32(stat.nlink); |
1da177e4 LT |
2850 | } |
2851 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
ddd1ea56 | 2852 | status = nfsd4_encode_user(xdr, rqstp, stat.uid); |
1da177e4 LT |
2853 | if (status) |
2854 | goto out; | |
2855 | } | |
2856 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
ddd1ea56 | 2857 | status = nfsd4_encode_group(xdr, rqstp, stat.gid); |
1da177e4 LT |
2858 | if (status) |
2859 | goto out; | |
2860 | } | |
2861 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
ddd1ea56 BF |
2862 | p = xdr_reserve_space(xdr, 8); |
2863 | if (!p) | |
1da177e4 | 2864 | goto out_resource; |
c373b0a4 BF |
2865 | *p++ = cpu_to_be32((u32) MAJOR(stat.rdev)); |
2866 | *p++ = cpu_to_be32((u32) MINOR(stat.rdev)); | |
1da177e4 LT |
2867 | } |
2868 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
ddd1ea56 BF |
2869 | p = xdr_reserve_space(xdr, 8); |
2870 | if (!p) | |
1da177e4 LT |
2871 | goto out_resource; |
2872 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
b64c7f3b | 2873 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2874 | } |
2875 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
ddd1ea56 BF |
2876 | p = xdr_reserve_space(xdr, 8); |
2877 | if (!p) | |
1da177e4 LT |
2878 | goto out_resource; |
2879 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
b64c7f3b | 2880 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2881 | } |
2882 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
ddd1ea56 BF |
2883 | p = xdr_reserve_space(xdr, 8); |
2884 | if (!p) | |
1da177e4 LT |
2885 | goto out_resource; |
2886 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
b64c7f3b | 2887 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2888 | } |
2889 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
ddd1ea56 BF |
2890 | p = xdr_reserve_space(xdr, 8); |
2891 | if (!p) | |
1da177e4 LT |
2892 | goto out_resource; |
2893 | dummy64 = (u64)stat.blocks << 9; | |
b64c7f3b | 2894 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2895 | } |
2896 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
ddd1ea56 BF |
2897 | p = xdr_reserve_space(xdr, 12); |
2898 | if (!p) | |
1da177e4 | 2899 | goto out_resource; |
b64c7f3b | 2900 | p = xdr_encode_hyper(p, (s64)stat.atime.tv_sec); |
c373b0a4 | 2901 | *p++ = cpu_to_be32(stat.atime.tv_nsec); |
1da177e4 LT |
2902 | } |
2903 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
ddd1ea56 BF |
2904 | p = xdr_reserve_space(xdr, 12); |
2905 | if (!p) | |
1da177e4 | 2906 | goto out_resource; |
16945141 | 2907 | p = encode_time_delta(p, d_inode(dentry)); |
1da177e4 LT |
2908 | } |
2909 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
ddd1ea56 BF |
2910 | p = xdr_reserve_space(xdr, 12); |
2911 | if (!p) | |
1da177e4 | 2912 | goto out_resource; |
b64c7f3b | 2913 | p = xdr_encode_hyper(p, (s64)stat.ctime.tv_sec); |
c373b0a4 | 2914 | *p++ = cpu_to_be32(stat.ctime.tv_nsec); |
1da177e4 LT |
2915 | } |
2916 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
ddd1ea56 BF |
2917 | p = xdr_reserve_space(xdr, 12); |
2918 | if (!p) | |
1da177e4 | 2919 | goto out_resource; |
b64c7f3b | 2920 | p = xdr_encode_hyper(p, (s64)stat.mtime.tv_sec); |
c373b0a4 | 2921 | *p++ = cpu_to_be32(stat.mtime.tv_nsec); |
1da177e4 LT |
2922 | } |
2923 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
0a2050d7 KM |
2924 | struct kstat parent_stat; |
2925 | u64 ino = stat.ino; | |
2926 | ||
ddd1ea56 BF |
2927 | p = xdr_reserve_space(xdr, 8); |
2928 | if (!p) | |
1da177e4 | 2929 | goto out_resource; |
406a7ea9 FF |
2930 | /* |
2931 | * Get parent's attributes if not ignoring crossmount | |
2932 | * and this is the root of a cross-mounted filesystem. | |
2933 | */ | |
2934 | if (ignore_crossmnt == 0 && | |
0a2050d7 KM |
2935 | dentry == exp->ex_path.mnt->mnt_root) { |
2936 | err = get_parent_attributes(exp, &parent_stat); | |
2937 | if (err) | |
2938 | goto out_nfserr; | |
2939 | ino = parent_stat.ino; | |
2940 | } | |
2941 | p = xdr_encode_hyper(p, ino); | |
1da177e4 | 2942 | } |
9cf514cc | 2943 | #ifdef CONFIG_NFSD_PNFS |
6896f15a | 2944 | if (bmval1 & FATTR4_WORD1_FS_LAYOUT_TYPES) { |
8a4c3926 | 2945 | status = nfsd4_encode_layout_types(xdr, exp->ex_layout_types); |
6896f15a KM |
2946 | if (status) |
2947 | goto out; | |
2948 | } | |
2949 | ||
2950 | if (bmval2 & FATTR4_WORD2_LAYOUT_TYPES) { | |
8a4c3926 | 2951 | status = nfsd4_encode_layout_types(xdr, exp->ex_layout_types); |
6896f15a KM |
2952 | if (status) |
2953 | goto out; | |
9cf514cc CH |
2954 | } |
2955 | ||
2956 | if (bmval2 & FATTR4_WORD2_LAYOUT_BLKSIZE) { | |
2957 | p = xdr_reserve_space(xdr, 4); | |
2958 | if (!p) | |
2959 | goto out_resource; | |
2960 | *p++ = cpu_to_be32(stat.blksize); | |
2961 | } | |
2962 | #endif /* CONFIG_NFSD_PNFS */ | |
8c18f205 | 2963 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
b26b78cb TM |
2964 | u32 supp[3]; |
2965 | ||
2966 | memcpy(supp, nfsd_suppattrs[minorversion], sizeof(supp)); | |
2967 | supp[0] &= NFSD_SUPPATTR_EXCLCREAT_WORD0; | |
2968 | supp[1] &= NFSD_SUPPATTR_EXCLCREAT_WORD1; | |
2969 | supp[2] &= NFSD_SUPPATTR_EXCLCREAT_WORD2; | |
2970 | ||
2971 | status = nfsd4_encode_bitmap(xdr, supp[0], supp[1], supp[2]); | |
75976de6 KM |
2972 | if (status) |
2973 | goto out; | |
8c18f205 | 2974 | } |
7e705706 | 2975 | |
a8585763 BF |
2976 | if (bmval2 & FATTR4_WORD2_CHANGE_ATTR_TYPE) { |
2977 | p = xdr_reserve_space(xdr, 4); | |
2978 | if (!p) | |
2979 | goto out_resource; | |
2980 | if (IS_I_VERSION(d_inode(dentry))) | |
2981 | *p++ = cpu_to_be32(NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR); | |
2982 | else | |
2983 | *p++ = cpu_to_be32(NFS4_CHANGE_TYPE_IS_TIME_METADATA); | |
2984 | } | |
2985 | ||
0ab88ca4 | 2986 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
7d580722 KM |
2987 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { |
2988 | status = nfsd4_encode_security_label(xdr, rqstp, context, | |
2989 | contextlen); | |
2990 | if (status) | |
2991 | goto out; | |
2992 | } | |
0ab88ca4 | 2993 | #endif |
7d580722 | 2994 | |
082d4bd7 BF |
2995 | attrlen = htonl(xdr->buf->len - attrlen_offset - 4); |
2996 | write_bytes_to_xdr_buf(xdr->buf, attrlen_offset, &attrlen, 4); | |
1da177e4 LT |
2997 | status = nfs_ok; |
2998 | ||
2999 | out: | |
ba4e55bb | 3000 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
18032ca0 DQ |
3001 | if (context) |
3002 | security_release_secctx(context, contextlen); | |
ba4e55bb | 3003 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ |
28e05dd8 | 3004 | kfree(acl); |
18df11d0 | 3005 | if (tempfh) { |
d50e6136 | 3006 | fh_put(tempfh); |
18df11d0 YZ |
3007 | kfree(tempfh); |
3008 | } | |
1fcea5b2 BF |
3009 | if (status) |
3010 | xdr_truncate_encode(xdr, starting_len); | |
1da177e4 LT |
3011 | return status; |
3012 | out_nfserr: | |
b8dd7b9a | 3013 | status = nfserrno(err); |
1da177e4 LT |
3014 | goto out; |
3015 | out_resource: | |
1da177e4 LT |
3016 | status = nfserr_resource; |
3017 | goto out; | |
1da177e4 LT |
3018 | } |
3019 | ||
2825a7f9 BF |
3020 | static void svcxdr_init_encode_from_buffer(struct xdr_stream *xdr, |
3021 | struct xdr_buf *buf, __be32 *p, int bytes) | |
3022 | { | |
3023 | xdr->scratch.iov_len = 0; | |
3024 | memset(buf, 0, sizeof(struct xdr_buf)); | |
3025 | buf->head[0].iov_base = p; | |
3026 | buf->head[0].iov_len = 0; | |
3027 | buf->len = 0; | |
3028 | xdr->buf = buf; | |
3029 | xdr->iov = buf->head; | |
3030 | xdr->p = p; | |
3031 | xdr->end = (void *)p + bytes; | |
3032 | buf->buflen = bytes; | |
3033 | } | |
3034 | ||
d5184658 BF |
3035 | __be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words, |
3036 | struct svc_fh *fhp, struct svc_export *exp, | |
3037 | struct dentry *dentry, u32 *bmval, | |
3038 | struct svc_rqst *rqstp, int ignore_crossmnt) | |
3039 | { | |
2825a7f9 | 3040 | struct xdr_buf dummy; |
d5184658 BF |
3041 | struct xdr_stream xdr; |
3042 | __be32 ret; | |
3043 | ||
2825a7f9 | 3044 | svcxdr_init_encode_from_buffer(&xdr, &dummy, *p, words << 2); |
d5184658 BF |
3045 | ret = nfsd4_encode_fattr(&xdr, fhp, exp, dentry, bmval, rqstp, |
3046 | ignore_crossmnt); | |
3047 | *p = xdr.p; | |
3048 | return ret; | |
3049 | } | |
3050 | ||
c0ce6ec8 BF |
3051 | static inline int attributes_need_mount(u32 *bmval) |
3052 | { | |
3053 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
3054 | return 1; | |
3055 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
3056 | return 1; | |
3057 | return 0; | |
3058 | } | |
3059 | ||
b37ad28b | 3060 | static __be32 |
561f0ed4 BF |
3061 | nfsd4_encode_dirent_fattr(struct xdr_stream *xdr, struct nfsd4_readdir *cd, |
3062 | const char *name, int namlen) | |
1da177e4 LT |
3063 | { |
3064 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
3065 | struct dentry *dentry; | |
b37ad28b | 3066 | __be32 nfserr; |
406a7ea9 | 3067 | int ignore_crossmnt = 0; |
1da177e4 | 3068 | |
6c2d4798 | 3069 | dentry = lookup_positive_unlocked(name, cd->rd_fhp->fh_dentry, namlen); |
1da177e4 LT |
3070 | if (IS_ERR(dentry)) |
3071 | return nfserrno(PTR_ERR(dentry)); | |
3072 | ||
3073 | exp_get(exp); | |
406a7ea9 FF |
3074 | /* |
3075 | * In the case of a mountpoint, the client may be asking for | |
3076 | * attributes that are only properties of the underlying filesystem | |
3077 | * as opposed to the cross-mounted file system. In such a case, | |
3078 | * we will not follow the cross mount and will fill the attribtutes | |
3079 | * directly from the mountpoint dentry. | |
3080 | */ | |
3227fa41 | 3081 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
3082 | int err; |
3083 | ||
3227fa41 BF |
3084 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
3085 | && !attributes_need_mount(cd->rd_bmval)) { | |
3086 | ignore_crossmnt = 1; | |
3087 | goto out_encode; | |
3088 | } | |
dcb488a3 AA |
3089 | /* |
3090 | * Why the heck aren't we just using nfsd_lookup?? | |
3091 | * Different "."/".." handling? Something else? | |
3092 | * At least, add a comment here to explain.... | |
3093 | */ | |
021d3a72 BF |
3094 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
3095 | if (err) { | |
3096 | nfserr = nfserrno(err); | |
1da177e4 LT |
3097 | goto out_put; |
3098 | } | |
dcb488a3 AA |
3099 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
3100 | if (nfserr) | |
3101 | goto out_put; | |
1da177e4 LT |
3102 | |
3103 | } | |
3227fa41 | 3104 | out_encode: |
561f0ed4 | 3105 | nfserr = nfsd4_encode_fattr(xdr, NULL, exp, dentry, cd->rd_bmval, |
406a7ea9 | 3106 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
3107 | out_put: |
3108 | dput(dentry); | |
3109 | exp_put(exp); | |
3110 | return nfserr; | |
3111 | } | |
3112 | ||
2ebbc012 | 3113 | static __be32 * |
561f0ed4 | 3114 | nfsd4_encode_rdattr_error(struct xdr_stream *xdr, __be32 nfserr) |
1da177e4 | 3115 | { |
561f0ed4 BF |
3116 | __be32 *p; |
3117 | ||
c3a45617 | 3118 | p = xdr_reserve_space(xdr, 20); |
561f0ed4 | 3119 | if (!p) |
1da177e4 LT |
3120 | return NULL; |
3121 | *p++ = htonl(2); | |
3122 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
3123 | *p++ = htonl(0); /* bmval1 */ | |
3124 | ||
87915c64 | 3125 | *p++ = htonl(4); /* attribute length */ |
1da177e4 | 3126 | *p++ = nfserr; /* no htonl */ |
1da177e4 LT |
3127 | return p; |
3128 | } | |
3129 | ||
3130 | static int | |
a0ad13ef N |
3131 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
3132 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 3133 | { |
a0ad13ef | 3134 | struct readdir_cd *ccd = ccdv; |
1da177e4 | 3135 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
561f0ed4 BF |
3136 | struct xdr_stream *xdr = cd->xdr; |
3137 | int start_offset = xdr->buf->len; | |
3138 | int cookie_offset; | |
aee37764 | 3139 | u32 name_and_cookie; |
561f0ed4 | 3140 | int entry_bytes; |
b37ad28b | 3141 | __be32 nfserr = nfserr_toosmall; |
561f0ed4 BF |
3142 | __be64 wire_offset; |
3143 | __be32 *p; | |
1da177e4 LT |
3144 | |
3145 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
3146 | if (name && isdotent(name, namlen)) { | |
3147 | cd->common.err = nfs_ok; | |
3148 | return 0; | |
3149 | } | |
3150 | ||
561f0ed4 BF |
3151 | if (cd->cookie_offset) { |
3152 | wire_offset = cpu_to_be64(offset); | |
3153 | write_bytes_to_xdr_buf(xdr->buf, cd->cookie_offset, | |
3154 | &wire_offset, 8); | |
3155 | } | |
1da177e4 | 3156 | |
561f0ed4 BF |
3157 | p = xdr_reserve_space(xdr, 4); |
3158 | if (!p) | |
1da177e4 | 3159 | goto fail; |
1da177e4 | 3160 | *p++ = xdr_one; /* mark entry present */ |
561f0ed4 BF |
3161 | cookie_offset = xdr->buf->len; |
3162 | p = xdr_reserve_space(xdr, 3*4 + namlen); | |
3163 | if (!p) | |
3164 | goto fail; | |
1da177e4 LT |
3165 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
3166 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
3167 | ||
561f0ed4 | 3168 | nfserr = nfsd4_encode_dirent_fattr(xdr, cd, name, namlen); |
1da177e4 LT |
3169 | switch (nfserr) { |
3170 | case nfs_ok: | |
1da177e4 LT |
3171 | break; |
3172 | case nfserr_resource: | |
3173 | nfserr = nfserr_toosmall; | |
3174 | goto fail; | |
b2c0cea6 | 3175 | case nfserr_noent: |
f41c5ad2 | 3176 | xdr_truncate_encode(xdr, start_offset); |
b2c0cea6 | 3177 | goto skip_entry; |
1da177e4 LT |
3178 | default: |
3179 | /* | |
3180 | * If the client requested the RDATTR_ERROR attribute, | |
3181 | * we stuff the error code into this attribute | |
3182 | * and continue. If this attribute was not requested, | |
3183 | * then in accordance with the spec, we fail the | |
3184 | * entire READDIR operation(!) | |
3185 | */ | |
3186 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
3187 | goto fail; | |
561f0ed4 | 3188 | p = nfsd4_encode_rdattr_error(xdr, nfserr); |
34081efc FI |
3189 | if (p == NULL) { |
3190 | nfserr = nfserr_toosmall; | |
1da177e4 | 3191 | goto fail; |
34081efc | 3192 | } |
1da177e4 | 3193 | } |
561f0ed4 BF |
3194 | nfserr = nfserr_toosmall; |
3195 | entry_bytes = xdr->buf->len - start_offset; | |
3196 | if (entry_bytes > cd->rd_maxcount) | |
3197 | goto fail; | |
3198 | cd->rd_maxcount -= entry_bytes; | |
aee37764 BF |
3199 | /* |
3200 | * RFC 3530 14.2.24 describes rd_dircount as only a "hint", so | |
3201 | * let's always let through the first entry, at least: | |
3202 | */ | |
0ec016e3 BF |
3203 | if (!cd->rd_dircount) |
3204 | goto fail; | |
3205 | name_and_cookie = 4 + 4 * XDR_QUADLEN(namlen) + 8; | |
aee37764 BF |
3206 | if (name_and_cookie > cd->rd_dircount && cd->cookie_offset) |
3207 | goto fail; | |
3208 | cd->rd_dircount -= min(cd->rd_dircount, name_and_cookie); | |
0ec016e3 | 3209 | |
561f0ed4 | 3210 | cd->cookie_offset = cookie_offset; |
b2c0cea6 | 3211 | skip_entry: |
1da177e4 LT |
3212 | cd->common.err = nfs_ok; |
3213 | return 0; | |
3214 | fail: | |
561f0ed4 | 3215 | xdr_truncate_encode(xdr, start_offset); |
1da177e4 LT |
3216 | cd->common.err = nfserr; |
3217 | return -EINVAL; | |
3218 | } | |
3219 | ||
d0a381dd BF |
3220 | static __be32 |
3221 | nfsd4_encode_stateid(struct xdr_stream *xdr, stateid_t *sid) | |
e2f282b9 | 3222 | { |
bc749ca4 | 3223 | __be32 *p; |
e2f282b9 | 3224 | |
d0a381dd BF |
3225 | p = xdr_reserve_space(xdr, sizeof(stateid_t)); |
3226 | if (!p) | |
3227 | return nfserr_resource; | |
c373b0a4 | 3228 | *p++ = cpu_to_be32(sid->si_generation); |
0c0c267b BF |
3229 | p = xdr_encode_opaque_fixed(p, &sid->si_opaque, |
3230 | sizeof(stateid_opaque_t)); | |
d0a381dd | 3231 | return 0; |
e2f282b9 BH |
3232 | } |
3233 | ||
695e12f8 | 3234 | static __be32 |
b37ad28b | 3235 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 3236 | { |
d0a381dd | 3237 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3238 | __be32 *p; |
1da177e4 | 3239 | |
bac966d6 BF |
3240 | p = xdr_reserve_space(xdr, 8); |
3241 | if (!p) | |
3242 | return nfserr_resource; | |
3243 | *p++ = cpu_to_be32(access->ac_supported); | |
3244 | *p++ = cpu_to_be32(access->ac_resp_access); | |
3245 | return 0; | |
1da177e4 LT |
3246 | } |
3247 | ||
1d1bc8f2 BF |
3248 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
3249 | { | |
d0a381dd | 3250 | struct xdr_stream *xdr = &resp->xdr; |
1d1bc8f2 BF |
3251 | __be32 *p; |
3252 | ||
bac966d6 BF |
3253 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 8); |
3254 | if (!p) | |
3255 | return nfserr_resource; | |
3256 | p = xdr_encode_opaque_fixed(p, bcts->sessionid.data, | |
3257 | NFS4_MAX_SESSIONID_LEN); | |
3258 | *p++ = cpu_to_be32(bcts->dir); | |
3259 | /* Upshifting from TCP to RDMA is not supported */ | |
3260 | *p++ = cpu_to_be32(0); | |
3261 | return 0; | |
1d1bc8f2 BF |
3262 | } |
3263 | ||
695e12f8 | 3264 | static __be32 |
b37ad28b | 3265 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 | 3266 | { |
d0a381dd BF |
3267 | struct xdr_stream *xdr = &resp->xdr; |
3268 | ||
bac966d6 | 3269 | return nfsd4_encode_stateid(xdr, &close->cl_stateid); |
1da177e4 LT |
3270 | } |
3271 | ||
3272 | ||
695e12f8 | 3273 | static __be32 |
b37ad28b | 3274 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 3275 | { |
d0a381dd | 3276 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3277 | __be32 *p; |
1da177e4 | 3278 | |
bac966d6 BF |
3279 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
3280 | if (!p) | |
3281 | return nfserr_resource; | |
3282 | p = xdr_encode_opaque_fixed(p, commit->co_verf.data, | |
0c0c267b | 3283 | NFS4_VERIFIER_SIZE); |
bac966d6 | 3284 | return 0; |
1da177e4 LT |
3285 | } |
3286 | ||
695e12f8 | 3287 | static __be32 |
b37ad28b | 3288 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 3289 | { |
d0a381dd | 3290 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3291 | __be32 *p; |
1da177e4 | 3292 | |
bac966d6 BF |
3293 | p = xdr_reserve_space(xdr, 20); |
3294 | if (!p) | |
3295 | return nfserr_resource; | |
3296 | encode_cinfo(p, &create->cr_cinfo); | |
b96811cd | 3297 | return nfsd4_encode_bitmap(xdr, create->cr_bmval[0], |
bac966d6 | 3298 | create->cr_bmval[1], create->cr_bmval[2]); |
1da177e4 LT |
3299 | } |
3300 | ||
b37ad28b AV |
3301 | static __be32 |
3302 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
3303 | { |
3304 | struct svc_fh *fhp = getattr->ga_fhp; | |
d5184658 | 3305 | struct xdr_stream *xdr = &resp->xdr; |
1da177e4 | 3306 | |
bac966d6 BF |
3307 | return nfsd4_encode_fattr(xdr, fhp, fhp->fh_export, fhp->fh_dentry, |
3308 | getattr->ga_bmval, resp->rqstp, 0); | |
1da177e4 LT |
3309 | } |
3310 | ||
695e12f8 BH |
3311 | static __be32 |
3312 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 3313 | { |
d0a381dd | 3314 | struct xdr_stream *xdr = &resp->xdr; |
695e12f8 | 3315 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 3316 | unsigned int len; |
bc749ca4 | 3317 | __be32 *p; |
1da177e4 | 3318 | |
bac966d6 BF |
3319 | len = fhp->fh_handle.fh_size; |
3320 | p = xdr_reserve_space(xdr, len + 4); | |
3321 | if (!p) | |
3322 | return nfserr_resource; | |
3323 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, len); | |
3324 | return 0; | |
1da177e4 LT |
3325 | } |
3326 | ||
3327 | /* | |
3328 | * Including all fields other than the name, a LOCK4denied structure requires | |
3329 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
3330 | */ | |
d0a381dd BF |
3331 | static __be32 |
3332 | nfsd4_encode_lock_denied(struct xdr_stream *xdr, struct nfsd4_lock_denied *ld) | |
1da177e4 | 3333 | { |
7c13f344 | 3334 | struct xdr_netobj *conf = &ld->ld_owner; |
bc749ca4 | 3335 | __be32 *p; |
1da177e4 | 3336 | |
8c7424cf | 3337 | again: |
d0a381dd | 3338 | p = xdr_reserve_space(xdr, 32 + XDR_LEN(conf->len)); |
8c7424cf BF |
3339 | if (!p) { |
3340 | /* | |
3341 | * Don't fail to return the result just because we can't | |
3342 | * return the conflicting open: | |
3343 | */ | |
3344 | if (conf->len) { | |
f98bac5a | 3345 | kfree(conf->data); |
8c7424cf BF |
3346 | conf->len = 0; |
3347 | conf->data = NULL; | |
3348 | goto again; | |
3349 | } | |
d0a381dd | 3350 | return nfserr_resource; |
8c7424cf | 3351 | } |
b64c7f3b BF |
3352 | p = xdr_encode_hyper(p, ld->ld_start); |
3353 | p = xdr_encode_hyper(p, ld->ld_length); | |
c373b0a4 | 3354 | *p++ = cpu_to_be32(ld->ld_type); |
7c13f344 | 3355 | if (conf->len) { |
0c0c267b BF |
3356 | p = xdr_encode_opaque_fixed(p, &ld->ld_clientid, 8); |
3357 | p = xdr_encode_opaque(p, conf->data, conf->len); | |
f98bac5a | 3358 | kfree(conf->data); |
1da177e4 | 3359 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
b64c7f3b | 3360 | p = xdr_encode_hyper(p, (u64)0); /* clientid */ |
c373b0a4 | 3361 | *p++ = cpu_to_be32(0); /* length of owner name */ |
1da177e4 | 3362 | } |
d0a381dd | 3363 | return nfserr_denied; |
1da177e4 LT |
3364 | } |
3365 | ||
695e12f8 | 3366 | static __be32 |
b37ad28b | 3367 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 3368 | { |
d0a381dd BF |
3369 | struct xdr_stream *xdr = &resp->xdr; |
3370 | ||
e2f282b9 | 3371 | if (!nfserr) |
d0a381dd | 3372 | nfserr = nfsd4_encode_stateid(xdr, &lock->lk_resp_stateid); |
e2f282b9 | 3373 | else if (nfserr == nfserr_denied) |
d0a381dd | 3374 | nfserr = nfsd4_encode_lock_denied(xdr, &lock->lk_denied); |
f98bac5a | 3375 | |
695e12f8 | 3376 | return nfserr; |
1da177e4 LT |
3377 | } |
3378 | ||
695e12f8 | 3379 | static __be32 |
b37ad28b | 3380 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 | 3381 | { |
d0a381dd BF |
3382 | struct xdr_stream *xdr = &resp->xdr; |
3383 | ||
1da177e4 | 3384 | if (nfserr == nfserr_denied) |
d0a381dd | 3385 | nfsd4_encode_lock_denied(xdr, &lockt->lt_denied); |
695e12f8 | 3386 | return nfserr; |
1da177e4 LT |
3387 | } |
3388 | ||
695e12f8 | 3389 | static __be32 |
b37ad28b | 3390 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 | 3391 | { |
d0a381dd BF |
3392 | struct xdr_stream *xdr = &resp->xdr; |
3393 | ||
bac966d6 | 3394 | return nfsd4_encode_stateid(xdr, &locku->lu_stateid); |
1da177e4 LT |
3395 | } |
3396 | ||
3397 | ||
695e12f8 | 3398 | static __be32 |
b37ad28b | 3399 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 3400 | { |
d0a381dd | 3401 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3402 | __be32 *p; |
1da177e4 | 3403 | |
bac966d6 BF |
3404 | p = xdr_reserve_space(xdr, 20); |
3405 | if (!p) | |
3406 | return nfserr_resource; | |
3407 | p = encode_cinfo(p, &link->li_cinfo); | |
3408 | return 0; | |
1da177e4 LT |
3409 | } |
3410 | ||
3411 | ||
695e12f8 | 3412 | static __be32 |
b37ad28b | 3413 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 3414 | { |
d0a381dd | 3415 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3416 | __be32 *p; |
1da177e4 | 3417 | |
d0a381dd BF |
3418 | nfserr = nfsd4_encode_stateid(xdr, &open->op_stateid); |
3419 | if (nfserr) | |
bac966d6 | 3420 | return nfserr; |
75976de6 | 3421 | p = xdr_reserve_space(xdr, 24); |
d0a381dd BF |
3422 | if (!p) |
3423 | return nfserr_resource; | |
d05d5744 | 3424 | p = encode_cinfo(p, &open->op_cinfo); |
c373b0a4 | 3425 | *p++ = cpu_to_be32(open->op_rflags); |
1da177e4 | 3426 | |
75976de6 KM |
3427 | nfserr = nfsd4_encode_bitmap(xdr, open->op_bmval[0], open->op_bmval[1], |
3428 | open->op_bmval[2]); | |
3429 | if (nfserr) | |
bac966d6 | 3430 | return nfserr; |
75976de6 KM |
3431 | |
3432 | p = xdr_reserve_space(xdr, 4); | |
3433 | if (!p) | |
3434 | return nfserr_resource; | |
3435 | ||
3436 | *p++ = cpu_to_be32(open->op_delegate_type); | |
1da177e4 LT |
3437 | switch (open->op_delegate_type) { |
3438 | case NFS4_OPEN_DELEGATE_NONE: | |
3439 | break; | |
3440 | case NFS4_OPEN_DELEGATE_READ: | |
d0a381dd BF |
3441 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
3442 | if (nfserr) | |
3443 | return nfserr; | |
3444 | p = xdr_reserve_space(xdr, 20); | |
3445 | if (!p) | |
3446 | return nfserr_resource; | |
c373b0a4 | 3447 | *p++ = cpu_to_be32(open->op_recall); |
1da177e4 LT |
3448 | |
3449 | /* | |
3450 | * TODO: ACE's in delegations | |
3451 | */ | |
c373b0a4 BF |
3452 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
3453 | *p++ = cpu_to_be32(0); | |
3454 | *p++ = cpu_to_be32(0); | |
3455 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 LT |
3456 | break; |
3457 | case NFS4_OPEN_DELEGATE_WRITE: | |
d0a381dd BF |
3458 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
3459 | if (nfserr) | |
3460 | return nfserr; | |
3461 | p = xdr_reserve_space(xdr, 32); | |
3462 | if (!p) | |
3463 | return nfserr_resource; | |
c373b0a4 | 3464 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
3465 | |
3466 | /* | |
3467 | * TODO: space_limit's in delegations | |
3468 | */ | |
c373b0a4 BF |
3469 | *p++ = cpu_to_be32(NFS4_LIMIT_SIZE); |
3470 | *p++ = cpu_to_be32(~(u32)0); | |
3471 | *p++ = cpu_to_be32(~(u32)0); | |
1da177e4 LT |
3472 | |
3473 | /* | |
3474 | * TODO: ACE's in delegations | |
3475 | */ | |
c373b0a4 BF |
3476 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
3477 | *p++ = cpu_to_be32(0); | |
3478 | *p++ = cpu_to_be32(0); | |
3479 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 | 3480 | break; |
d24433cd BH |
3481 | case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */ |
3482 | switch (open->op_why_no_deleg) { | |
3483 | case WND4_CONTENTION: | |
3484 | case WND4_RESOURCE: | |
d0a381dd BF |
3485 | p = xdr_reserve_space(xdr, 8); |
3486 | if (!p) | |
3487 | return nfserr_resource; | |
c373b0a4 BF |
3488 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
3489 | /* deleg signaling not supported yet: */ | |
3490 | *p++ = cpu_to_be32(0); | |
d24433cd BH |
3491 | break; |
3492 | default: | |
d0a381dd BF |
3493 | p = xdr_reserve_space(xdr, 4); |
3494 | if (!p) | |
3495 | return nfserr_resource; | |
c373b0a4 | 3496 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
d24433cd | 3497 | } |
d24433cd | 3498 | break; |
1da177e4 LT |
3499 | default: |
3500 | BUG(); | |
3501 | } | |
3502 | /* XXX save filehandle here */ | |
bac966d6 | 3503 | return 0; |
1da177e4 LT |
3504 | } |
3505 | ||
695e12f8 | 3506 | static __be32 |
b37ad28b | 3507 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 | 3508 | { |
d0a381dd BF |
3509 | struct xdr_stream *xdr = &resp->xdr; |
3510 | ||
bac966d6 | 3511 | return nfsd4_encode_stateid(xdr, &oc->oc_resp_stateid); |
1da177e4 LT |
3512 | } |
3513 | ||
695e12f8 | 3514 | static __be32 |
b37ad28b | 3515 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 | 3516 | { |
d0a381dd BF |
3517 | struct xdr_stream *xdr = &resp->xdr; |
3518 | ||
bac966d6 | 3519 | return nfsd4_encode_stateid(xdr, &od->od_stateid); |
1da177e4 LT |
3520 | } |
3521 | ||
dc97618d BF |
3522 | static __be32 nfsd4_encode_splice_read( |
3523 | struct nfsd4_compoundres *resp, | |
3524 | struct nfsd4_read *read, | |
3525 | struct file *file, unsigned long maxcount) | |
1da177e4 | 3526 | { |
ddd1ea56 | 3527 | struct xdr_stream *xdr = &resp->xdr; |
34a78b48 | 3528 | struct xdr_buf *buf = xdr->buf; |
dc97618d | 3529 | u32 eof; |
30596768 | 3530 | int space_left; |
dc97618d | 3531 | __be32 nfserr; |
fec25fa4 | 3532 | __be32 *p = xdr->p - 2; |
1da177e4 | 3533 | |
d5d5c304 KM |
3534 | /* Make sure there will be room for padding if needed */ |
3535 | if (xdr->end - xdr->p < 1) | |
d0a381dd | 3536 | return nfserr_resource; |
dc97618d | 3537 | |
87c5942e | 3538 | nfserr = nfsd_splice_read(read->rd_rqstp, read->rd_fhp, |
83a63072 | 3539 | file, read->rd_offset, &maxcount, &eof); |
87c5942e | 3540 | read->rd_length = maxcount; |
dc97618d BF |
3541 | if (nfserr) { |
3542 | /* | |
3543 | * nfsd_splice_actor may have already messed with the | |
3544 | * page length; reset it so as not to confuse | |
3545 | * xdr_truncate_encode: | |
3546 | */ | |
34a78b48 | 3547 | buf->page_len = 0; |
dc97618d | 3548 | return nfserr; |
b0e35fda | 3549 | } |
1da177e4 | 3550 | |
fec25fa4 BF |
3551 | *(p++) = htonl(eof); |
3552 | *(p++) = htonl(maxcount); | |
dc97618d | 3553 | |
34a78b48 BF |
3554 | buf->page_len = maxcount; |
3555 | buf->len += maxcount; | |
15b23ef5 BF |
3556 | xdr->page_ptr += (buf->page_base + maxcount + PAGE_SIZE - 1) |
3557 | / PAGE_SIZE; | |
dc97618d BF |
3558 | |
3559 | /* Use rest of head for padding and remaining ops: */ | |
34a78b48 BF |
3560 | buf->tail[0].iov_base = xdr->p; |
3561 | buf->tail[0].iov_len = 0; | |
fec25fa4 | 3562 | xdr->iov = buf->tail; |
dc97618d | 3563 | if (maxcount&3) { |
fec25fa4 BF |
3564 | int pad = 4 - (maxcount&3); |
3565 | ||
3566 | *(xdr->p++) = 0; | |
3567 | ||
34a78b48 | 3568 | buf->tail[0].iov_base += maxcount&3; |
fec25fa4 BF |
3569 | buf->tail[0].iov_len = pad; |
3570 | buf->len += pad; | |
b0e35fda | 3571 | } |
2825a7f9 | 3572 | |
dc97618d | 3573 | space_left = min_t(int, (void *)xdr->end - (void *)xdr->p, |
34a78b48 BF |
3574 | buf->buflen - buf->len); |
3575 | buf->buflen = buf->len + space_left; | |
dc97618d BF |
3576 | xdr->end = (__be32 *)((void *)xdr->end + space_left); |
3577 | ||
3578 | return 0; | |
3579 | } | |
3580 | ||
3581 | static __be32 nfsd4_encode_readv(struct nfsd4_compoundres *resp, | |
3582 | struct nfsd4_read *read, | |
3583 | struct file *file, unsigned long maxcount) | |
3584 | { | |
3585 | struct xdr_stream *xdr = &resp->xdr; | |
3586 | u32 eof; | |
3587 | int v; | |
dc97618d | 3588 | int starting_len = xdr->buf->len - 8; |
dc97618d | 3589 | long len; |
b0420980 | 3590 | int thislen; |
dc97618d BF |
3591 | __be32 nfserr; |
3592 | __be32 tmp; | |
3593 | __be32 *p; | |
b0420980 | 3594 | int pad; |
1da177e4 | 3595 | |
41205539 CL |
3596 | /* |
3597 | * svcrdma requires every READ payload to start somewhere | |
3598 | * in xdr->pages. | |
3599 | */ | |
3600 | if (xdr->iov == xdr->buf->head) { | |
3601 | xdr->iov = NULL; | |
3602 | xdr->end = xdr->p; | |
3603 | } | |
3604 | ||
1da177e4 LT |
3605 | len = maxcount; |
3606 | v = 0; | |
b0420980 | 3607 | while (len) { |
6ff9897d | 3608 | thislen = min_t(long, len, PAGE_SIZE); |
7dcf4ab9 | 3609 | p = xdr_reserve_space(xdr, thislen); |
b0420980 BF |
3610 | WARN_ON_ONCE(!p); |
3611 | resp->rqstp->rq_vec[v].iov_base = p; | |
6ff9897d | 3612 | resp->rqstp->rq_vec[v].iov_len = thislen; |
1da177e4 | 3613 | v++; |
6ff9897d | 3614 | len -= thislen; |
1da177e4 LT |
3615 | } |
3616 | read->rd_vlen = v; | |
3617 | ||
87c5942e | 3618 | nfserr = nfsd_readv(resp->rqstp, read->rd_fhp, file, read->rd_offset, |
83a63072 TM |
3619 | resp->rqstp->rq_vec, read->rd_vlen, &maxcount, |
3620 | &eof); | |
87c5942e | 3621 | read->rd_length = maxcount; |
dc97618d | 3622 | if (nfserr) |
1da177e4 | 3623 | return nfserr; |
41205539 CL |
3624 | if (svc_encode_read_payload(resp->rqstp, starting_len + 8, maxcount)) |
3625 | return nfserr_io; | |
7dcf4ab9 | 3626 | xdr_truncate_encode(xdr, starting_len + 8 + xdr_align_size(maxcount)); |
dc97618d | 3627 | |
dc97618d BF |
3628 | tmp = htonl(eof); |
3629 | write_bytes_to_xdr_buf(xdr->buf, starting_len , &tmp, 4); | |
3630 | tmp = htonl(maxcount); | |
3631 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 4, &tmp, 4); | |
3632 | ||
7dcf4ab9 | 3633 | tmp = xdr_zero; |
b0420980 BF |
3634 | pad = (maxcount&3) ? 4 - (maxcount&3) : 0; |
3635 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 8 + maxcount, | |
7dcf4ab9 | 3636 | &tmp, pad); |
1da177e4 | 3637 | return 0; |
dc97618d BF |
3638 | |
3639 | } | |
3640 | ||
3641 | static __be32 | |
3642 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3643 | struct nfsd4_read *read) | |
3644 | { | |
3645 | unsigned long maxcount; | |
3646 | struct xdr_stream *xdr = &resp->xdr; | |
5c4583b2 | 3647 | struct file *file; |
dc97618d | 3648 | int starting_len = xdr->buf->len; |
dc97618d | 3649 | __be32 *p; |
dc97618d | 3650 | |
5c4583b2 JL |
3651 | if (nfserr) |
3652 | return nfserr; | |
3653 | file = read->rd_nf->nf_file; | |
3654 | ||
dc97618d BF |
3655 | p = xdr_reserve_space(xdr, 8); /* eof flag and byte count */ |
3656 | if (!p) { | |
779fb0f3 | 3657 | WARN_ON_ONCE(test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)); |
bac966d6 | 3658 | return nfserr_resource; |
dc97618d | 3659 | } |
68e8bb03 CH |
3660 | if (resp->xdr.buf->page_len && |
3661 | test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) { | |
b0420980 | 3662 | WARN_ON_ONCE(1); |
bac966d6 | 3663 | return nfserr_resource; |
dc97618d | 3664 | } |
dc97618d BF |
3665 | xdr_commit_encode(xdr); |
3666 | ||
3667 | maxcount = svc_max_payload(resp->rqstp); | |
68e8bb03 CH |
3668 | maxcount = min_t(unsigned long, maxcount, |
3669 | (xdr->buf->buflen - xdr->buf->len)); | |
3c7aa15d | 3670 | maxcount = min_t(unsigned long, maxcount, read->rd_length); |
dc97618d | 3671 | |
68e8bb03 CH |
3672 | if (file->f_op->splice_read && |
3673 | test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) | |
96bcad50 | 3674 | nfserr = nfsd4_encode_splice_read(resp, read, file, maxcount); |
dc97618d | 3675 | else |
96bcad50 | 3676 | nfserr = nfsd4_encode_readv(resp, read, file, maxcount); |
dc97618d | 3677 | |
96bcad50 | 3678 | if (nfserr) |
dc97618d | 3679 | xdr_truncate_encode(xdr, starting_len); |
96bcad50 | 3680 | |
96bcad50 | 3681 | return nfserr; |
1da177e4 LT |
3682 | } |
3683 | ||
b37ad28b AV |
3684 | static __be32 |
3685 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
3686 | { |
3687 | int maxcount; | |
476a7b1f BF |
3688 | __be32 wire_count; |
3689 | int zero = 0; | |
ddd1ea56 | 3690 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3691 | int length_offset = xdr->buf->len; |
bc749ca4 | 3692 | __be32 *p; |
1da177e4 | 3693 | |
2825a7f9 BF |
3694 | p = xdr_reserve_space(xdr, 4); |
3695 | if (!p) | |
3696 | return nfserr_resource; | |
1da177e4 | 3697 | maxcount = PAGE_SIZE; |
d0a381dd | 3698 | |
476a7b1f BF |
3699 | p = xdr_reserve_space(xdr, maxcount); |
3700 | if (!p) | |
4e21ac4b | 3701 | return nfserr_resource; |
1da177e4 | 3702 | /* |
fd4a0edf MS |
3703 | * XXX: By default, vfs_readlink() will truncate symlinks if they |
3704 | * would overflow the buffer. Is this kosher in NFSv4? If not, one | |
3705 | * easy fix is: if vfs_readlink() precisely fills the buffer, assume | |
3706 | * that truncation occurred, and return NFS4ERR_RESOURCE. | |
1da177e4 | 3707 | */ |
476a7b1f BF |
3708 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, |
3709 | (char *)p, &maxcount); | |
1da177e4 | 3710 | if (nfserr == nfserr_isdir) |
d3f627c8 BF |
3711 | nfserr = nfserr_inval; |
3712 | if (nfserr) { | |
1fcea5b2 | 3713 | xdr_truncate_encode(xdr, length_offset); |
1da177e4 | 3714 | return nfserr; |
d3f627c8 | 3715 | } |
1da177e4 | 3716 | |
476a7b1f BF |
3717 | wire_count = htonl(maxcount); |
3718 | write_bytes_to_xdr_buf(xdr->buf, length_offset, &wire_count, 4); | |
69bbd9c7 | 3719 | xdr_truncate_encode(xdr, length_offset + 4 + ALIGN(maxcount, 4)); |
476a7b1f BF |
3720 | if (maxcount & 3) |
3721 | write_bytes_to_xdr_buf(xdr->buf, length_offset + 4 + maxcount, | |
3722 | &zero, 4 - (maxcount&3)); | |
1da177e4 LT |
3723 | return 0; |
3724 | } | |
3725 | ||
b37ad28b AV |
3726 | static __be32 |
3727 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
3728 | { |
3729 | int maxcount; | |
561f0ed4 | 3730 | int bytes_left; |
1da177e4 | 3731 | loff_t offset; |
561f0ed4 | 3732 | __be64 wire_offset; |
ddd1ea56 | 3733 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3734 | int starting_len = xdr->buf->len; |
bc749ca4 | 3735 | __be32 *p; |
1da177e4 | 3736 | |
d0a381dd BF |
3737 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
3738 | if (!p) | |
3739 | return nfserr_resource; | |
1da177e4 LT |
3740 | |
3741 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
c373b0a4 BF |
3742 | *p++ = cpu_to_be32(0); |
3743 | *p++ = cpu_to_be32(0); | |
4aea24b2 BF |
3744 | resp->xdr.buf->head[0].iov_len = ((char *)resp->xdr.p) |
3745 | - (char *)resp->xdr.buf->head[0].iov_base; | |
1da177e4 LT |
3746 | |
3747 | /* | |
561f0ed4 BF |
3748 | * Number of bytes left for directory entries allowing for the |
3749 | * final 8 bytes of the readdir and a following failed op: | |
3750 | */ | |
3751 | bytes_left = xdr->buf->buflen - xdr->buf->len | |
3752 | - COMPOUND_ERR_SLACK_SPACE - 8; | |
3753 | if (bytes_left < 0) { | |
3754 | nfserr = nfserr_resource; | |
3755 | goto err_no_verf; | |
3756 | } | |
9c2ece6e SM |
3757 | maxcount = svc_max_payload(resp->rqstp); |
3758 | maxcount = min_t(u32, readdir->rd_maxcount, maxcount); | |
561f0ed4 BF |
3759 | /* |
3760 | * Note the rfc defines rd_maxcount as the size of the | |
3761 | * READDIR4resok structure, which includes the verifier above | |
3762 | * and the 8 bytes encoded at the end of this function: | |
1da177e4 | 3763 | */ |
561f0ed4 BF |
3764 | if (maxcount < 16) { |
3765 | nfserr = nfserr_toosmall; | |
1da177e4 LT |
3766 | goto err_no_verf; |
3767 | } | |
561f0ed4 | 3768 | maxcount = min_t(int, maxcount-16, bytes_left); |
1da177e4 | 3769 | |
aee37764 BF |
3770 | /* RFC 3530 14.2.24 allows us to ignore dircount when it's 0: */ |
3771 | if (!readdir->rd_dircount) | |
9c2ece6e | 3772 | readdir->rd_dircount = svc_max_payload(resp->rqstp); |
aee37764 | 3773 | |
561f0ed4 BF |
3774 | readdir->xdr = xdr; |
3775 | readdir->rd_maxcount = maxcount; | |
1da177e4 | 3776 | readdir->common.err = 0; |
561f0ed4 | 3777 | readdir->cookie_offset = 0; |
1da177e4 LT |
3778 | |
3779 | offset = readdir->rd_cookie; | |
3780 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
3781 | &offset, | |
3782 | &readdir->common, nfsd4_encode_dirent); | |
3783 | if (nfserr == nfs_ok && | |
3784 | readdir->common.err == nfserr_toosmall && | |
561f0ed4 BF |
3785 | xdr->buf->len == starting_len + 8) { |
3786 | /* nothing encoded; which limit did we hit?: */ | |
3787 | if (maxcount - 16 < bytes_left) | |
3788 | /* It was the fault of rd_maxcount: */ | |
3789 | nfserr = nfserr_toosmall; | |
3790 | else | |
3791 | /* We ran out of buffer space: */ | |
3792 | nfserr = nfserr_resource; | |
3793 | } | |
1da177e4 LT |
3794 | if (nfserr) |
3795 | goto err_no_verf; | |
3796 | ||
561f0ed4 BF |
3797 | if (readdir->cookie_offset) { |
3798 | wire_offset = cpu_to_be64(offset); | |
3799 | write_bytes_to_xdr_buf(xdr->buf, readdir->cookie_offset, | |
3800 | &wire_offset, 8); | |
3801 | } | |
1da177e4 | 3802 | |
561f0ed4 BF |
3803 | p = xdr_reserve_space(xdr, 8); |
3804 | if (!p) { | |
3805 | WARN_ON_ONCE(1); | |
3806 | goto err_no_verf; | |
3807 | } | |
1da177e4 LT |
3808 | *p++ = 0; /* no more entries */ |
3809 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
1da177e4 LT |
3810 | |
3811 | return 0; | |
3812 | err_no_verf: | |
1fcea5b2 | 3813 | xdr_truncate_encode(xdr, starting_len); |
1da177e4 LT |
3814 | return nfserr; |
3815 | } | |
3816 | ||
695e12f8 | 3817 | static __be32 |
b37ad28b | 3818 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 3819 | { |
d0a381dd | 3820 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3821 | __be32 *p; |
1da177e4 | 3822 | |
bac966d6 BF |
3823 | p = xdr_reserve_space(xdr, 20); |
3824 | if (!p) | |
3825 | return nfserr_resource; | |
3826 | p = encode_cinfo(p, &remove->rm_cinfo); | |
3827 | return 0; | |
1da177e4 LT |
3828 | } |
3829 | ||
695e12f8 | 3830 | static __be32 |
b37ad28b | 3831 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 3832 | { |
d0a381dd | 3833 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3834 | __be32 *p; |
1da177e4 | 3835 | |
bac966d6 BF |
3836 | p = xdr_reserve_space(xdr, 40); |
3837 | if (!p) | |
3838 | return nfserr_resource; | |
3839 | p = encode_cinfo(p, &rename->rn_sinfo); | |
3840 | p = encode_cinfo(p, &rename->rn_tinfo); | |
3841 | return 0; | |
1da177e4 LT |
3842 | } |
3843 | ||
695e12f8 | 3844 | static __be32 |
bac966d6 | 3845 | nfsd4_do_encode_secinfo(struct xdr_stream *xdr, struct svc_export *exp) |
dcb488a3 | 3846 | { |
676e4ebd | 3847 | u32 i, nflavs, supported; |
4796f457 BF |
3848 | struct exp_flavor_info *flavs; |
3849 | struct exp_flavor_info def_flavs[2]; | |
676e4ebd CL |
3850 | __be32 *p, *flavorsp; |
3851 | static bool report = true; | |
dcb488a3 | 3852 | |
4796f457 BF |
3853 | if (exp->ex_nflavors) { |
3854 | flavs = exp->ex_flavors; | |
3855 | nflavs = exp->ex_nflavors; | |
3856 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
3857 | flavs = def_flavs; | |
3858 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
3859 | nflavs = 2; | |
3860 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
3861 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
3862 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
3863 | nflavs = 1; | |
3864 | flavs[0].pseudoflavor | |
3865 | = svcauth_gss_flavor(exp->ex_client); | |
3866 | } else { | |
3867 | nflavs = 1; | |
3868 | flavs[0].pseudoflavor | |
3869 | = exp->ex_client->flavour->flavour; | |
3870 | } | |
3871 | } | |
3872 | ||
676e4ebd | 3873 | supported = 0; |
d0a381dd BF |
3874 | p = xdr_reserve_space(xdr, 4); |
3875 | if (!p) | |
bac966d6 | 3876 | return nfserr_resource; |
676e4ebd | 3877 | flavorsp = p++; /* to be backfilled later */ |
676e4ebd | 3878 | |
4796f457 | 3879 | for (i = 0; i < nflavs; i++) { |
676e4ebd | 3880 | rpc_authflavor_t pf = flavs[i].pseudoflavor; |
a77c806f | 3881 | struct rpcsec_gss_info info; |
dcb488a3 | 3882 | |
676e4ebd CL |
3883 | if (rpcauth_get_gssinfo(pf, &info) == 0) { |
3884 | supported++; | |
d0a381dd BF |
3885 | p = xdr_reserve_space(xdr, 4 + 4 + |
3886 | XDR_LEN(info.oid.len) + 4 + 4); | |
3887 | if (!p) | |
bac966d6 | 3888 | return nfserr_resource; |
c373b0a4 | 3889 | *p++ = cpu_to_be32(RPC_AUTH_GSS); |
0c0c267b | 3890 | p = xdr_encode_opaque(p, info.oid.data, info.oid.len); |
c373b0a4 BF |
3891 | *p++ = cpu_to_be32(info.qop); |
3892 | *p++ = cpu_to_be32(info.service); | |
676e4ebd CL |
3893 | } else if (pf < RPC_AUTH_MAXFLAVOR) { |
3894 | supported++; | |
d0a381dd BF |
3895 | p = xdr_reserve_space(xdr, 4); |
3896 | if (!p) | |
bac966d6 | 3897 | return nfserr_resource; |
c373b0a4 | 3898 | *p++ = cpu_to_be32(pf); |
676e4ebd CL |
3899 | } else { |
3900 | if (report) | |
3901 | pr_warn("NFS: SECINFO: security flavor %u " | |
3902 | "is not supported\n", pf); | |
dcb488a3 AA |
3903 | } |
3904 | } | |
a77c806f | 3905 | |
676e4ebd CL |
3906 | if (nflavs != supported) |
3907 | report = false; | |
3908 | *flavorsp = htonl(supported); | |
bac966d6 | 3909 | return 0; |
dcb488a3 AA |
3910 | } |
3911 | ||
22b6dee8 MJ |
3912 | static __be32 |
3913 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3914 | struct nfsd4_secinfo *secinfo) | |
3915 | { | |
d0a381dd BF |
3916 | struct xdr_stream *xdr = &resp->xdr; |
3917 | ||
bac966d6 | 3918 | return nfsd4_do_encode_secinfo(xdr, secinfo->si_exp); |
22b6dee8 MJ |
3919 | } |
3920 | ||
3921 | static __be32 | |
3922 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3923 | struct nfsd4_secinfo_no_name *secinfo) | |
3924 | { | |
d0a381dd BF |
3925 | struct xdr_stream *xdr = &resp->xdr; |
3926 | ||
bac966d6 | 3927 | return nfsd4_do_encode_secinfo(xdr, secinfo->sin_exp); |
22b6dee8 MJ |
3928 | } |
3929 | ||
1da177e4 LT |
3930 | /* |
3931 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
3932 | * regardless of the error status. | |
3933 | */ | |
695e12f8 | 3934 | static __be32 |
b37ad28b | 3935 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 3936 | { |
d0a381dd | 3937 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3938 | __be32 *p; |
1da177e4 | 3939 | |
d0a381dd BF |
3940 | p = xdr_reserve_space(xdr, 16); |
3941 | if (!p) | |
3942 | return nfserr_resource; | |
1da177e4 | 3943 | if (nfserr) { |
c373b0a4 BF |
3944 | *p++ = cpu_to_be32(3); |
3945 | *p++ = cpu_to_be32(0); | |
3946 | *p++ = cpu_to_be32(0); | |
3947 | *p++ = cpu_to_be32(0); | |
1da177e4 LT |
3948 | } |
3949 | else { | |
c373b0a4 BF |
3950 | *p++ = cpu_to_be32(3); |
3951 | *p++ = cpu_to_be32(setattr->sa_bmval[0]); | |
3952 | *p++ = cpu_to_be32(setattr->sa_bmval[1]); | |
3953 | *p++ = cpu_to_be32(setattr->sa_bmval[2]); | |
1da177e4 | 3954 | } |
695e12f8 | 3955 | return nfserr; |
1da177e4 LT |
3956 | } |
3957 | ||
695e12f8 | 3958 | static __be32 |
b37ad28b | 3959 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 3960 | { |
d0a381dd | 3961 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3962 | __be32 *p; |
1da177e4 LT |
3963 | |
3964 | if (!nfserr) { | |
d0a381dd BF |
3965 | p = xdr_reserve_space(xdr, 8 + NFS4_VERIFIER_SIZE); |
3966 | if (!p) | |
3967 | return nfserr_resource; | |
0c0c267b BF |
3968 | p = xdr_encode_opaque_fixed(p, &scd->se_clientid, 8); |
3969 | p = xdr_encode_opaque_fixed(p, &scd->se_confirm, | |
3970 | NFS4_VERIFIER_SIZE); | |
1da177e4 LT |
3971 | } |
3972 | else if (nfserr == nfserr_clid_inuse) { | |
d0a381dd BF |
3973 | p = xdr_reserve_space(xdr, 8); |
3974 | if (!p) | |
3975 | return nfserr_resource; | |
c373b0a4 BF |
3976 | *p++ = cpu_to_be32(0); |
3977 | *p++ = cpu_to_be32(0); | |
1da177e4 | 3978 | } |
695e12f8 | 3979 | return nfserr; |
1da177e4 LT |
3980 | } |
3981 | ||
695e12f8 | 3982 | static __be32 |
b37ad28b | 3983 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 3984 | { |
d0a381dd | 3985 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3986 | __be32 *p; |
1da177e4 | 3987 | |
bac966d6 BF |
3988 | p = xdr_reserve_space(xdr, 16); |
3989 | if (!p) | |
3990 | return nfserr_resource; | |
3991 | *p++ = cpu_to_be32(write->wr_bytes_written); | |
3992 | *p++ = cpu_to_be32(write->wr_how_written); | |
3993 | p = xdr_encode_opaque_fixed(p, write->wr_verifier.data, | |
3994 | NFS4_VERIFIER_SIZE); | |
3995 | return 0; | |
1da177e4 LT |
3996 | } |
3997 | ||
2db134eb | 3998 | static __be32 |
57b7b43b | 3999 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
4000 | struct nfsd4_exchange_id *exid) |
4001 | { | |
d0a381dd | 4002 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 4003 | __be32 *p; |
0733d213 AA |
4004 | char *major_id; |
4005 | char *server_scope; | |
4006 | int major_id_sz; | |
4007 | int server_scope_sz; | |
4008 | uint64_t minor_id = 0; | |
7627d7dc | 4009 | struct nfsd_net *nn = net_generic(SVC_NET(resp->rqstp), nfsd_net_id); |
0733d213 | 4010 | |
7627d7dc SM |
4011 | major_id = nn->nfsd_name; |
4012 | major_id_sz = strlen(nn->nfsd_name); | |
4013 | server_scope = nn->nfsd_name; | |
4014 | server_scope_sz = strlen(nn->nfsd_name); | |
0733d213 | 4015 | |
d0a381dd | 4016 | p = xdr_reserve_space(xdr, |
0733d213 AA |
4017 | 8 /* eir_clientid */ + |
4018 | 4 /* eir_sequenceid */ + | |
4019 | 4 /* eir_flags */ + | |
a8bb84bc | 4020 | 4 /* spr_how */); |
d0a381dd BF |
4021 | if (!p) |
4022 | return nfserr_resource; | |
0733d213 | 4023 | |
0c0c267b | 4024 | p = xdr_encode_opaque_fixed(p, &exid->clientid, 8); |
c373b0a4 BF |
4025 | *p++ = cpu_to_be32(exid->seqid); |
4026 | *p++ = cpu_to_be32(exid->flags); | |
0733d213 | 4027 | |
c373b0a4 | 4028 | *p++ = cpu_to_be32(exid->spa_how); |
a8bb84bc | 4029 | |
57266a6e BF |
4030 | switch (exid->spa_how) { |
4031 | case SP4_NONE: | |
4032 | break; | |
4033 | case SP4_MACH_CRED: | |
4034 | /* spo_must_enforce bitmap: */ | |
bac966d6 | 4035 | nfserr = nfsd4_encode_bitmap(xdr, |
ed941643 AE |
4036 | exid->spo_must_enforce[0], |
4037 | exid->spo_must_enforce[1], | |
4038 | exid->spo_must_enforce[2]); | |
bac966d6 BF |
4039 | if (nfserr) |
4040 | return nfserr; | |
ed941643 | 4041 | /* spo_must_allow bitmap: */ |
bac966d6 | 4042 | nfserr = nfsd4_encode_bitmap(xdr, |
ed941643 AE |
4043 | exid->spo_must_allow[0], |
4044 | exid->spo_must_allow[1], | |
4045 | exid->spo_must_allow[2]); | |
bac966d6 BF |
4046 | if (nfserr) |
4047 | return nfserr; | |
57266a6e BF |
4048 | break; |
4049 | default: | |
4050 | WARN_ON_ONCE(1); | |
4051 | } | |
0733d213 | 4052 | |
d0a381dd | 4053 | p = xdr_reserve_space(xdr, |
a8bb84bc KM |
4054 | 8 /* so_minor_id */ + |
4055 | 4 /* so_major_id.len */ + | |
4056 | (XDR_QUADLEN(major_id_sz) * 4) + | |
4057 | 4 /* eir_server_scope.len */ + | |
4058 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
4059 | 4 /* eir_server_impl_id.count (0) */); | |
d0a381dd BF |
4060 | if (!p) |
4061 | return nfserr_resource; | |
a8bb84bc | 4062 | |
0733d213 | 4063 | /* The server_owner struct */ |
b64c7f3b | 4064 | p = xdr_encode_hyper(p, minor_id); /* Minor id */ |
0733d213 | 4065 | /* major id */ |
0c0c267b | 4066 | p = xdr_encode_opaque(p, major_id, major_id_sz); |
0733d213 AA |
4067 | |
4068 | /* Server scope */ | |
0c0c267b | 4069 | p = xdr_encode_opaque(p, server_scope, server_scope_sz); |
0733d213 AA |
4070 | |
4071 | /* Implementation id */ | |
c373b0a4 | 4072 | *p++ = cpu_to_be32(0); /* zero length nfs_impl_id4 array */ |
0733d213 | 4073 | return 0; |
2db134eb AA |
4074 | } |
4075 | ||
4076 | static __be32 | |
57b7b43b | 4077 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
4078 | struct nfsd4_create_session *sess) |
4079 | { | |
d0a381dd | 4080 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 4081 | __be32 *p; |
ec6b5d7b | 4082 | |
d0a381dd BF |
4083 | p = xdr_reserve_space(xdr, 24); |
4084 | if (!p) | |
4085 | return nfserr_resource; | |
0c0c267b BF |
4086 | p = xdr_encode_opaque_fixed(p, sess->sessionid.data, |
4087 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
4088 | *p++ = cpu_to_be32(sess->seqid); |
4089 | *p++ = cpu_to_be32(sess->flags); | |
ec6b5d7b | 4090 | |
d0a381dd BF |
4091 | p = xdr_reserve_space(xdr, 28); |
4092 | if (!p) | |
4093 | return nfserr_resource; | |
c373b0a4 BF |
4094 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
4095 | *p++ = cpu_to_be32(sess->fore_channel.maxreq_sz); | |
4096 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_sz); | |
4097 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_cached); | |
4098 | *p++ = cpu_to_be32(sess->fore_channel.maxops); | |
4099 | *p++ = cpu_to_be32(sess->fore_channel.maxreqs); | |
4100 | *p++ = cpu_to_be32(sess->fore_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
4101 | |
4102 | if (sess->fore_channel.nr_rdma_attrs) { | |
d0a381dd BF |
4103 | p = xdr_reserve_space(xdr, 4); |
4104 | if (!p) | |
4105 | return nfserr_resource; | |
c373b0a4 | 4106 | *p++ = cpu_to_be32(sess->fore_channel.rdma_attrs); |
ec6b5d7b AA |
4107 | } |
4108 | ||
d0a381dd BF |
4109 | p = xdr_reserve_space(xdr, 28); |
4110 | if (!p) | |
4111 | return nfserr_resource; | |
c373b0a4 BF |
4112 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
4113 | *p++ = cpu_to_be32(sess->back_channel.maxreq_sz); | |
4114 | *p++ = cpu_to_be32(sess->back_channel.maxresp_sz); | |
4115 | *p++ = cpu_to_be32(sess->back_channel.maxresp_cached); | |
4116 | *p++ = cpu_to_be32(sess->back_channel.maxops); | |
4117 | *p++ = cpu_to_be32(sess->back_channel.maxreqs); | |
4118 | *p++ = cpu_to_be32(sess->back_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
4119 | |
4120 | if (sess->back_channel.nr_rdma_attrs) { | |
d0a381dd BF |
4121 | p = xdr_reserve_space(xdr, 4); |
4122 | if (!p) | |
4123 | return nfserr_resource; | |
c373b0a4 | 4124 | *p++ = cpu_to_be32(sess->back_channel.rdma_attrs); |
ec6b5d7b AA |
4125 | } |
4126 | return 0; | |
2db134eb AA |
4127 | } |
4128 | ||
c47d832b | 4129 | static __be32 |
57b7b43b | 4130 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
4131 | struct nfsd4_sequence *seq) |
4132 | { | |
d0a381dd | 4133 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 4134 | __be32 *p; |
b85d4c01 | 4135 | |
d0a381dd BF |
4136 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 20); |
4137 | if (!p) | |
4138 | return nfserr_resource; | |
0c0c267b BF |
4139 | p = xdr_encode_opaque_fixed(p, seq->sessionid.data, |
4140 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
4141 | *p++ = cpu_to_be32(seq->seqid); |
4142 | *p++ = cpu_to_be32(seq->slotid); | |
b7d7ca35 | 4143 | /* Note slotid's are numbered from zero: */ |
c373b0a4 BF |
4144 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_highest_slotid */ |
4145 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_target_highest_slotid */ | |
4146 | *p++ = cpu_to_be32(seq->status_flags); | |
b85d4c01 | 4147 | |
f5236013 | 4148 | resp->cstate.data_offset = xdr->buf->len; /* DRC cache data pointer */ |
b85d4c01 | 4149 | return 0; |
2db134eb AA |
4150 | } |
4151 | ||
2355c596 | 4152 | static __be32 |
57b7b43b | 4153 | nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
17456804 BS |
4154 | struct nfsd4_test_stateid *test_stateid) |
4155 | { | |
d0a381dd | 4156 | struct xdr_stream *xdr = &resp->xdr; |
03cfb420 | 4157 | struct nfsd4_test_stateid_id *stateid, *next; |
17456804 | 4158 | __be32 *p; |
17456804 | 4159 | |
d0a381dd BF |
4160 | p = xdr_reserve_space(xdr, 4 + (4 * test_stateid->ts_num_ids)); |
4161 | if (!p) | |
4162 | return nfserr_resource; | |
17456804 | 4163 | *p++ = htonl(test_stateid->ts_num_ids); |
17456804 | 4164 | |
03cfb420 | 4165 | list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) { |
02f5fde5 | 4166 | *p++ = stateid->ts_id_status; |
17456804 | 4167 | } |
17456804 | 4168 | |
bac966d6 | 4169 | return 0; |
17456804 BS |
4170 | } |
4171 | ||
9cf514cc CH |
4172 | #ifdef CONFIG_NFSD_PNFS |
4173 | static __be32 | |
4174 | nfsd4_encode_getdeviceinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4175 | struct nfsd4_getdeviceinfo *gdev) | |
4176 | { | |
4177 | struct xdr_stream *xdr = &resp->xdr; | |
f961e3f2 | 4178 | const struct nfsd4_layout_ops *ops; |
9cf514cc CH |
4179 | u32 starting_len = xdr->buf->len, needed_len; |
4180 | __be32 *p; | |
4181 | ||
9cf514cc CH |
4182 | p = xdr_reserve_space(xdr, 4); |
4183 | if (!p) | |
bac966d6 | 4184 | return nfserr_resource; |
9cf514cc CH |
4185 | |
4186 | *p++ = cpu_to_be32(gdev->gd_layout_type); | |
4187 | ||
4188 | /* If maxcount is 0 then just update notifications */ | |
4189 | if (gdev->gd_maxcount != 0) { | |
f961e3f2 | 4190 | ops = nfsd4_layout_ops[gdev->gd_layout_type]; |
9cf514cc CH |
4191 | nfserr = ops->encode_getdeviceinfo(xdr, gdev); |
4192 | if (nfserr) { | |
4193 | /* | |
4194 | * We don't bother to burden the layout drivers with | |
4195 | * enforcing gd_maxcount, just tell the client to | |
4196 | * come back with a bigger buffer if it's not enough. | |
4197 | */ | |
4198 | if (xdr->buf->len + 4 > gdev->gd_maxcount) | |
4199 | goto toosmall; | |
bac966d6 | 4200 | return nfserr; |
9cf514cc CH |
4201 | } |
4202 | } | |
4203 | ||
9cf514cc CH |
4204 | if (gdev->gd_notify_types) { |
4205 | p = xdr_reserve_space(xdr, 4 + 4); | |
4206 | if (!p) | |
bac966d6 | 4207 | return nfserr_resource; |
9cf514cc CH |
4208 | *p++ = cpu_to_be32(1); /* bitmap length */ |
4209 | *p++ = cpu_to_be32(gdev->gd_notify_types); | |
4210 | } else { | |
4211 | p = xdr_reserve_space(xdr, 4); | |
4212 | if (!p) | |
bac966d6 | 4213 | return nfserr_resource; |
9cf514cc CH |
4214 | *p++ = 0; |
4215 | } | |
4216 | ||
bac966d6 | 4217 | return 0; |
9cf514cc CH |
4218 | toosmall: |
4219 | dprintk("%s: maxcount too small\n", __func__); | |
4220 | needed_len = xdr->buf->len + 4 /* notifications */; | |
4221 | xdr_truncate_encode(xdr, starting_len); | |
4222 | p = xdr_reserve_space(xdr, 4); | |
bac966d6 BF |
4223 | if (!p) |
4224 | return nfserr_resource; | |
4225 | *p++ = cpu_to_be32(needed_len); | |
4226 | return nfserr_toosmall; | |
9cf514cc CH |
4227 | } |
4228 | ||
4229 | static __be32 | |
4230 | nfsd4_encode_layoutget(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4231 | struct nfsd4_layoutget *lgp) | |
4232 | { | |
4233 | struct xdr_stream *xdr = &resp->xdr; | |
f961e3f2 | 4234 | const struct nfsd4_layout_ops *ops; |
9cf514cc CH |
4235 | __be32 *p; |
4236 | ||
9cf514cc CH |
4237 | p = xdr_reserve_space(xdr, 36 + sizeof(stateid_opaque_t)); |
4238 | if (!p) | |
bac966d6 | 4239 | return nfserr_resource; |
9cf514cc CH |
4240 | |
4241 | *p++ = cpu_to_be32(1); /* we always set return-on-close */ | |
4242 | *p++ = cpu_to_be32(lgp->lg_sid.si_generation); | |
4243 | p = xdr_encode_opaque_fixed(p, &lgp->lg_sid.si_opaque, | |
4244 | sizeof(stateid_opaque_t)); | |
4245 | ||
4246 | *p++ = cpu_to_be32(1); /* we always return a single layout */ | |
4247 | p = xdr_encode_hyper(p, lgp->lg_seg.offset); | |
4248 | p = xdr_encode_hyper(p, lgp->lg_seg.length); | |
4249 | *p++ = cpu_to_be32(lgp->lg_seg.iomode); | |
4250 | *p++ = cpu_to_be32(lgp->lg_layout_type); | |
4251 | ||
f961e3f2 | 4252 | ops = nfsd4_layout_ops[lgp->lg_layout_type]; |
bac966d6 | 4253 | return ops->encode_layoutget(xdr, lgp); |
9cf514cc CH |
4254 | } |
4255 | ||
4256 | static __be32 | |
4257 | nfsd4_encode_layoutcommit(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4258 | struct nfsd4_layoutcommit *lcp) | |
4259 | { | |
4260 | struct xdr_stream *xdr = &resp->xdr; | |
4261 | __be32 *p; | |
4262 | ||
9cf514cc CH |
4263 | p = xdr_reserve_space(xdr, 4); |
4264 | if (!p) | |
4265 | return nfserr_resource; | |
4266 | *p++ = cpu_to_be32(lcp->lc_size_chg); | |
4267 | if (lcp->lc_size_chg) { | |
4268 | p = xdr_reserve_space(xdr, 8); | |
4269 | if (!p) | |
4270 | return nfserr_resource; | |
4271 | p = xdr_encode_hyper(p, lcp->lc_newsize); | |
4272 | } | |
4273 | ||
bac966d6 | 4274 | return 0; |
9cf514cc CH |
4275 | } |
4276 | ||
4277 | static __be32 | |
4278 | nfsd4_encode_layoutreturn(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4279 | struct nfsd4_layoutreturn *lrp) | |
4280 | { | |
4281 | struct xdr_stream *xdr = &resp->xdr; | |
4282 | __be32 *p; | |
4283 | ||
9cf514cc CH |
4284 | p = xdr_reserve_space(xdr, 4); |
4285 | if (!p) | |
4286 | return nfserr_resource; | |
4287 | *p++ = cpu_to_be32(lrp->lrs_present); | |
4288 | if (lrp->lrs_present) | |
376675da | 4289 | return nfsd4_encode_stateid(xdr, &lrp->lr_sid); |
bac966d6 | 4290 | return 0; |
9cf514cc CH |
4291 | } |
4292 | #endif /* CONFIG_NFSD_PNFS */ | |
4293 | ||
29ae7f9d | 4294 | static __be32 |
e0639dc5 OK |
4295 | nfsd42_encode_write_res(struct nfsd4_compoundres *resp, |
4296 | struct nfsd42_write_res *write, bool sync) | |
29ae7f9d AS |
4297 | { |
4298 | __be32 *p; | |
e0639dc5 OK |
4299 | p = xdr_reserve_space(&resp->xdr, 4); |
4300 | if (!p) | |
4301 | return nfserr_resource; | |
29ae7f9d | 4302 | |
e0639dc5 OK |
4303 | if (sync) |
4304 | *p++ = cpu_to_be32(0); | |
4305 | else { | |
4306 | __be32 nfserr; | |
4307 | *p++ = cpu_to_be32(1); | |
4308 | nfserr = nfsd4_encode_stateid(&resp->xdr, &write->cb_stateid); | |
4309 | if (nfserr) | |
4310 | return nfserr; | |
4311 | } | |
4312 | p = xdr_reserve_space(&resp->xdr, 8 + 4 + NFS4_VERIFIER_SIZE); | |
29ae7f9d AS |
4313 | if (!p) |
4314 | return nfserr_resource; | |
4315 | ||
29ae7f9d AS |
4316 | p = xdr_encode_hyper(p, write->wr_bytes_written); |
4317 | *p++ = cpu_to_be32(write->wr_stable_how); | |
4318 | p = xdr_encode_opaque_fixed(p, write->wr_verifier.data, | |
4319 | NFS4_VERIFIER_SIZE); | |
4320 | return nfs_ok; | |
4321 | } | |
4322 | ||
51911868 OK |
4323 | static __be32 |
4324 | nfsd42_encode_nl4_server(struct nfsd4_compoundres *resp, struct nl4_server *ns) | |
4325 | { | |
4326 | struct xdr_stream *xdr = &resp->xdr; | |
4327 | struct nfs42_netaddr *addr; | |
4328 | __be32 *p; | |
4329 | ||
4330 | p = xdr_reserve_space(xdr, 4); | |
4331 | *p++ = cpu_to_be32(ns->nl4_type); | |
4332 | ||
4333 | switch (ns->nl4_type) { | |
4334 | case NL4_NETADDR: | |
4335 | addr = &ns->u.nl4_addr; | |
4336 | ||
4337 | /* netid_len, netid, uaddr_len, uaddr (port included | |
4338 | * in RPCBIND_MAXUADDRLEN) | |
4339 | */ | |
4340 | p = xdr_reserve_space(xdr, | |
4341 | 4 /* netid len */ + | |
4342 | (XDR_QUADLEN(addr->netid_len) * 4) + | |
4343 | 4 /* uaddr len */ + | |
4344 | (XDR_QUADLEN(addr->addr_len) * 4)); | |
4345 | if (!p) | |
4346 | return nfserr_resource; | |
4347 | ||
4348 | *p++ = cpu_to_be32(addr->netid_len); | |
4349 | p = xdr_encode_opaque_fixed(p, addr->netid, | |
4350 | addr->netid_len); | |
4351 | *p++ = cpu_to_be32(addr->addr_len); | |
4352 | p = xdr_encode_opaque_fixed(p, addr->addr, | |
4353 | addr->addr_len); | |
4354 | break; | |
4355 | default: | |
4356 | WARN_ON_ONCE(ns->nl4_type != NL4_NETADDR); | |
4357 | return nfserr_inval; | |
4358 | } | |
4359 | ||
4360 | return 0; | |
4361 | } | |
4362 | ||
29ae7f9d AS |
4363 | static __be32 |
4364 | nfsd4_encode_copy(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4365 | struct nfsd4_copy *copy) | |
4366 | { | |
4367 | __be32 *p; | |
4368 | ||
e0639dc5 OK |
4369 | nfserr = nfsd42_encode_write_res(resp, ©->cp_res, |
4370 | copy->cp_synchronous); | |
bac966d6 BF |
4371 | if (nfserr) |
4372 | return nfserr; | |
29ae7f9d | 4373 | |
bac966d6 | 4374 | p = xdr_reserve_space(&resp->xdr, 4 + 4); |
edcc8452 | 4375 | *p++ = xdr_one; /* cr_consecutive */ |
bac966d6 BF |
4376 | *p++ = cpu_to_be32(copy->cp_synchronous); |
4377 | return 0; | |
29ae7f9d AS |
4378 | } |
4379 | ||
6308bc98 OK |
4380 | static __be32 |
4381 | nfsd4_encode_offload_status(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4382 | struct nfsd4_offload_status *os) | |
4383 | { | |
4384 | struct xdr_stream *xdr = &resp->xdr; | |
4385 | __be32 *p; | |
4386 | ||
4387 | p = xdr_reserve_space(xdr, 8 + 4); | |
4388 | if (!p) | |
4389 | return nfserr_resource; | |
4390 | p = xdr_encode_hyper(p, os->count); | |
4391 | *p++ = cpu_to_be32(0); | |
4392 | ||
4393 | return nfserr; | |
4394 | } | |
4395 | ||
51911868 OK |
4396 | static __be32 |
4397 | nfsd4_encode_copy_notify(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4398 | struct nfsd4_copy_notify *cn) | |
4399 | { | |
4400 | struct xdr_stream *xdr = &resp->xdr; | |
4401 | __be32 *p; | |
4402 | ||
4403 | if (nfserr) | |
4404 | return nfserr; | |
4405 | ||
4406 | /* 8 sec, 4 nsec */ | |
4407 | p = xdr_reserve_space(xdr, 12); | |
4408 | if (!p) | |
4409 | return nfserr_resource; | |
4410 | ||
4411 | /* cnr_lease_time */ | |
4412 | p = xdr_encode_hyper(p, cn->cpn_sec); | |
4413 | *p++ = cpu_to_be32(cn->cpn_nsec); | |
4414 | ||
4415 | /* cnr_stateid */ | |
4416 | nfserr = nfsd4_encode_stateid(xdr, &cn->cpn_cnr_stateid); | |
4417 | if (nfserr) | |
4418 | return nfserr; | |
4419 | ||
4420 | /* cnr_src.nl_nsvr */ | |
4421 | p = xdr_reserve_space(xdr, 4); | |
4422 | if (!p) | |
4423 | return nfserr_resource; | |
4424 | ||
4425 | *p++ = cpu_to_be32(1); | |
4426 | ||
4427 | return nfsd42_encode_nl4_server(resp, &cn->cpn_src); | |
4428 | } | |
4429 | ||
24bab491 AS |
4430 | static __be32 |
4431 | nfsd4_encode_seek(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4432 | struct nfsd4_seek *seek) | |
4433 | { | |
4434 | __be32 *p; | |
4435 | ||
24bab491 AS |
4436 | p = xdr_reserve_space(&resp->xdr, 4 + 8); |
4437 | *p++ = cpu_to_be32(seek->seek_eof); | |
4438 | p = xdr_encode_hyper(p, seek->seek_pos); | |
4439 | ||
bac966d6 | 4440 | return 0; |
24bab491 AS |
4441 | } |
4442 | ||
695e12f8 BH |
4443 | static __be32 |
4444 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
4445 | { | |
4446 | return nfserr; | |
4447 | } | |
4448 | ||
4449 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
4450 | ||
2db134eb AA |
4451 | /* |
4452 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
4453 | * since we don't need to filter out obsolete ops as this is | |
4454 | * done in the decoding phase. | |
4455 | */ | |
c1df609d | 4456 | static const nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
4457 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
4458 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
4459 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
4460 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
4461 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
4462 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
4463 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
4464 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
4465 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
4466 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
4467 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
4468 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
4469 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
4470 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
4471 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
4472 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 4473 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
4474 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
4475 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
4476 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4477 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4478 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4479 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
4480 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
4481 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
4482 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
4483 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
4484 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
4485 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4486 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4487 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
4488 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
4489 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
4490 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
4491 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
4492 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
4493 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
4494 | |
4495 | /* NFSv4.1 operations */ | |
4496 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
1d1bc8f2 | 4497 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
2db134eb AA |
4498 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
4499 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
43212cc7 KM |
4500 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_noop, |
4501 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb | 4502 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
9cf514cc CH |
4503 | #ifdef CONFIG_NFSD_PNFS |
4504 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_getdeviceinfo, | |
4505 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
4506 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_layoutcommit, | |
4507 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_layoutget, | |
4508 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_layoutreturn, | |
4509 | #else | |
2db134eb AA |
4510 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, |
4511 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
4512 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
4513 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
4514 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
9cf514cc | 4515 | #endif |
22b6dee8 | 4516 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
2db134eb AA |
4517 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
4518 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
17456804 | 4519 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, |
2db134eb AA |
4520 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
4521 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
4522 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
87a15a80 AS |
4523 | |
4524 | /* NFSv4.2 operations */ | |
4525 | [OP_ALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, | |
29ae7f9d | 4526 | [OP_COPY] = (nfsd4_enc)nfsd4_encode_copy, |
51911868 | 4527 | [OP_COPY_NOTIFY] = (nfsd4_enc)nfsd4_encode_copy_notify, |
87a15a80 AS |
4528 | [OP_DEALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, |
4529 | [OP_IO_ADVISE] = (nfsd4_enc)nfsd4_encode_noop, | |
4530 | [OP_LAYOUTERROR] = (nfsd4_enc)nfsd4_encode_noop, | |
4531 | [OP_LAYOUTSTATS] = (nfsd4_enc)nfsd4_encode_noop, | |
4532 | [OP_OFFLOAD_CANCEL] = (nfsd4_enc)nfsd4_encode_noop, | |
6308bc98 | 4533 | [OP_OFFLOAD_STATUS] = (nfsd4_enc)nfsd4_encode_offload_status, |
87a15a80 | 4534 | [OP_READ_PLUS] = (nfsd4_enc)nfsd4_encode_noop, |
24bab491 | 4535 | [OP_SEEK] = (nfsd4_enc)nfsd4_encode_seek, |
87a15a80 | 4536 | [OP_WRITE_SAME] = (nfsd4_enc)nfsd4_encode_noop, |
ffa0160a | 4537 | [OP_CLONE] = (nfsd4_enc)nfsd4_encode_noop, |
695e12f8 BH |
4538 | }; |
4539 | ||
496c262c | 4540 | /* |
a8095f7e BF |
4541 | * Calculate whether we still have space to encode repsize bytes. |
4542 | * There are two considerations: | |
4543 | * - For NFS versions >=4.1, the size of the reply must stay within | |
4544 | * session limits | |
4545 | * - For all NFS versions, we must stay within limited preallocated | |
4546 | * buffer space. | |
496c262c | 4547 | * |
a8095f7e BF |
4548 | * This is called before the operation is processed, so can only provide |
4549 | * an upper estimate. For some nonidempotent operations (such as | |
4550 | * getattr), it's not necessarily a problem if that estimate is wrong, | |
4551 | * as we can fail it after processing without significant side effects. | |
496c262c | 4552 | */ |
a8095f7e | 4553 | __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 respsize) |
496c262c | 4554 | { |
67492c99 | 4555 | struct xdr_buf *buf = &resp->rqstp->rq_res; |
47ee5298 | 4556 | struct nfsd4_slot *slot = resp->cstate.slot; |
496c262c | 4557 | |
47ee5298 BF |
4558 | if (buf->len + respsize <= buf->buflen) |
4559 | return nfs_ok; | |
4560 | if (!nfsd4_has_session(&resp->cstate)) | |
ea8d7720 | 4561 | return nfserr_resource; |
47ee5298 BF |
4562 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) { |
4563 | WARN_ON_ONCE(1); | |
4564 | return nfserr_rep_too_big_to_cache; | |
ea8d7720 | 4565 | } |
47ee5298 | 4566 | return nfserr_rep_too_big; |
496c262c AA |
4567 | } |
4568 | ||
1da177e4 LT |
4569 | void |
4570 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
4571 | { | |
082d4bd7 | 4572 | struct xdr_stream *xdr = &resp->xdr; |
9411b1d4 | 4573 | struct nfs4_stateowner *so = resp->cstate.replay_owner; |
5f4ab945 | 4574 | struct svc_rqst *rqstp = resp->rqstp; |
34b1744c | 4575 | const struct nfsd4_operation *opdesc = op->opdesc; |
082d4bd7 | 4576 | int post_err_offset; |
07d1f802 | 4577 | nfsd4_enc encoder; |
bc749ca4 | 4578 | __be32 *p; |
1da177e4 | 4579 | |
d0a381dd BF |
4580 | p = xdr_reserve_space(xdr, 8); |
4581 | if (!p) { | |
4582 | WARN_ON_ONCE(1); | |
4583 | return; | |
4584 | } | |
c373b0a4 | 4585 | *p++ = cpu_to_be32(op->opnum); |
082d4bd7 | 4586 | post_err_offset = xdr->buf->len; |
1da177e4 | 4587 | |
695e12f8 BH |
4588 | if (op->opnum == OP_ILLEGAL) |
4589 | goto status; | |
b7571e4c BF |
4590 | if (op->status && opdesc && |
4591 | !(opdesc->op_flags & OP_NONTRIVIAL_ERROR_ENCODE)) | |
4592 | goto status; | |
695e12f8 BH |
4593 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || |
4594 | !nfsd4_enc_ops[op->opnum]); | |
07d1f802 BF |
4595 | encoder = nfsd4_enc_ops[op->opnum]; |
4596 | op->status = encoder(resp, op->status, &op->u); | |
34b1744c BF |
4597 | if (opdesc && opdesc->op_release) |
4598 | opdesc->op_release(&op->u); | |
2825a7f9 BF |
4599 | xdr_commit_encode(xdr); |
4600 | ||
067e1ace | 4601 | /* nfsd4_check_resp_size guarantees enough room for error status */ |
5f4ab945 BF |
4602 | if (!op->status) { |
4603 | int space_needed = 0; | |
4604 | if (!nfsd4_last_compound_op(rqstp)) | |
4605 | space_needed = COMPOUND_ERR_SLACK_SPACE; | |
4606 | op->status = nfsd4_check_resp_size(resp, space_needed); | |
4607 | } | |
c8f13d97 BF |
4608 | if (op->status == nfserr_resource && nfsd4_has_session(&resp->cstate)) { |
4609 | struct nfsd4_slot *slot = resp->cstate.slot; | |
4610 | ||
4611 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) | |
4612 | op->status = nfserr_rep_too_big_to_cache; | |
4613 | else | |
4614 | op->status = nfserr_rep_too_big; | |
4615 | } | |
07d1f802 BF |
4616 | if (op->status == nfserr_resource || |
4617 | op->status == nfserr_rep_too_big || | |
4618 | op->status == nfserr_rep_too_big_to_cache) { | |
4619 | /* | |
4620 | * The operation may have already been encoded or | |
4621 | * partially encoded. No op returns anything additional | |
4622 | * in the case of one of these three errors, so we can | |
4623 | * just truncate back to after the status. But it's a | |
4624 | * bug if we had to do this on a non-idempotent op: | |
4625 | */ | |
4626 | warn_on_nonidempotent_op(op); | |
082d4bd7 | 4627 | xdr_truncate_encode(xdr, post_err_offset); |
07d1f802 | 4628 | } |
9411b1d4 | 4629 | if (so) { |
082d4bd7 BF |
4630 | int len = xdr->buf->len - post_err_offset; |
4631 | ||
9411b1d4 | 4632 | so->so_replay.rp_status = op->status; |
082d4bd7 BF |
4633 | so->so_replay.rp_buflen = len; |
4634 | read_bytes_from_xdr_buf(xdr->buf, post_err_offset, | |
4635 | so->so_replay.rp_buf, len); | |
9411b1d4 | 4636 | } |
695e12f8 | 4637 | status: |
082d4bd7 BF |
4638 | /* Note that op->status is already in network byte order: */ |
4639 | write_bytes_to_xdr_buf(xdr->buf, post_err_offset - 4, &op->status, 4); | |
1da177e4 LT |
4640 | } |
4641 | ||
4642 | /* | |
4643 | * Encode the reply stored in the stateowner reply cache | |
4644 | * | |
4645 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
4646 | * previously sent already encoded operation. | |
1da177e4 LT |
4647 | */ |
4648 | void | |
d0a381dd | 4649 | nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op) |
1da177e4 | 4650 | { |
bc749ca4 | 4651 | __be32 *p; |
1da177e4 LT |
4652 | struct nfs4_replay *rp = op->replay; |
4653 | ||
d0a381dd BF |
4654 | p = xdr_reserve_space(xdr, 8 + rp->rp_buflen); |
4655 | if (!p) { | |
4656 | WARN_ON_ONCE(1); | |
4657 | return; | |
4658 | } | |
c373b0a4 | 4659 | *p++ = cpu_to_be32(op->opnum); |
1da177e4 | 4660 | *p++ = rp->rp_status; /* already xdr'ed */ |
1da177e4 | 4661 | |
0c0c267b | 4662 | p = xdr_encode_opaque_fixed(p, rp->rp_buf, rp->rp_buflen); |
1da177e4 LT |
4663 | } |
4664 | ||
1da177e4 | 4665 | int |
63f8de37 | 4666 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 LT |
4667 | { |
4668 | return xdr_ressize_check(rqstp, p); | |
4669 | } | |
4670 | ||
8537488b | 4671 | void nfsd4_release_compoundargs(struct svc_rqst *rqstp) |
1da177e4 | 4672 | { |
3e98abff BF |
4673 | struct nfsd4_compoundargs *args = rqstp->rq_argp; |
4674 | ||
1da177e4 LT |
4675 | if (args->ops != args->iops) { |
4676 | kfree(args->ops); | |
4677 | args->ops = args->iops; | |
4678 | } | |
f99d49ad JJ |
4679 | kfree(args->tmpp); |
4680 | args->tmpp = NULL; | |
1da177e4 | 4681 | while (args->to_free) { |
d5e23383 | 4682 | struct svcxdr_tmpbuf *tb = args->to_free; |
1da177e4 | 4683 | args->to_free = tb->next; |
1da177e4 LT |
4684 | kfree(tb); |
4685 | } | |
4686 | } | |
4687 | ||
4688 | int | |
026fec7e | 4689 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 4690 | { |
026fec7e CH |
4691 | struct nfsd4_compoundargs *args = rqstp->rq_argp; |
4692 | ||
e874f9f8 JL |
4693 | if (rqstp->rq_arg.head[0].iov_len % 4) { |
4694 | /* client is nuts */ | |
4695 | dprintk("%s: compound not properly padded! (peeraddr=%pISc xid=0x%x)", | |
4696 | __func__, svc_addr(rqstp), be32_to_cpu(rqstp->rq_xid)); | |
4697 | return 0; | |
4698 | } | |
1da177e4 LT |
4699 | args->p = p; |
4700 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
4701 | args->pagelist = rqstp->rq_arg.pages; | |
4702 | args->pagelen = rqstp->rq_arg.page_len; | |
eae03e2a | 4703 | args->tail = false; |
1da177e4 LT |
4704 | args->tmpp = NULL; |
4705 | args->to_free = NULL; | |
4706 | args->ops = args->iops; | |
4707 | args->rqstp = rqstp; | |
4708 | ||
3e98abff | 4709 | return !nfsd4_decode_compound(args); |
1da177e4 LT |
4710 | } |
4711 | ||
4712 | int | |
63f8de37 | 4713 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 LT |
4714 | { |
4715 | /* | |
4716 | * All that remains is to write the tag and operation count... | |
4717 | */ | |
63f8de37 | 4718 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
6ac90391 BF |
4719 | struct xdr_buf *buf = resp->xdr.buf; |
4720 | ||
4721 | WARN_ON_ONCE(buf->len != buf->head[0].iov_len + buf->page_len + | |
4722 | buf->tail[0].iov_len); | |
dd97fdde | 4723 | |
2825a7f9 BF |
4724 | rqstp->rq_next_page = resp->xdr.page_ptr + 1; |
4725 | ||
1da177e4 LT |
4726 | p = resp->tagp; |
4727 | *p++ = htonl(resp->taglen); | |
4728 | memcpy(p, resp->tag, resp->taglen); | |
4729 | p += XDR_QUADLEN(resp->taglen); | |
4730 | *p++ = htonl(resp->opcnt); | |
4731 | ||
b607664e | 4732 | nfsd4_sequence_done(resp); |
1da177e4 LT |
4733 | return 1; |
4734 | } | |
4735 | ||
4736 | /* | |
4737 | * Local variables: | |
4738 | * c-basic-offset: 8 | |
4739 | * End: | |
4740 | */ |