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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 | ||
47057abd | 36 | #include <linux/fs_struct.h> |
96bcad50 | 37 | #include <linux/file.h> |
5a0e3ad6 | 38 | #include <linux/slab.h> |
1da177e4 | 39 | #include <linux/namei.h> |
341eb184 | 40 | #include <linux/statfs.h> |
0733d213 | 41 | #include <linux/utsname.h> |
17456804 | 42 | #include <linux/pagemap.h> |
4796f457 | 43 | #include <linux/sunrpc/svcauth_gss.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" |
2ca72e17 | 53 | |
18032ca0 DQ |
54 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
55 | #include <linux/security.h> | |
56 | #endif | |
57 | ||
58 | ||
1da177e4 LT |
59 | #define NFSDDBG_FACILITY NFSDDBG_XDR |
60 | ||
5cf23dbb | 61 | const u32 nfsd_suppattrs[3][3] = { |
916d2d84 BF |
62 | {NFSD4_SUPPORTED_ATTRS_WORD0, |
63 | NFSD4_SUPPORTED_ATTRS_WORD1, | |
64 | NFSD4_SUPPORTED_ATTRS_WORD2}, | |
65 | ||
66 | {NFSD4_1_SUPPORTED_ATTRS_WORD0, | |
67 | NFSD4_1_SUPPORTED_ATTRS_WORD1, | |
68 | NFSD4_1_SUPPORTED_ATTRS_WORD2}, | |
69 | ||
70 | {NFSD4_1_SUPPORTED_ATTRS_WORD0, | |
71 | NFSD4_1_SUPPORTED_ATTRS_WORD1, | |
72 | NFSD4_2_SUPPORTED_ATTRS_WORD2}, | |
73 | }; | |
74 | ||
42ca0993 BF |
75 | /* |
76 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing | |
77 | * directory in order to indicate to the client that a filesystem boundary is present | |
78 | * We use a fixed fsid for a referral | |
79 | */ | |
80 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL | |
81 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL | |
82 | ||
b37ad28b | 83 | static __be32 |
a36b1725 | 84 | check_filename(char *str, int len) |
1da177e4 LT |
85 | { |
86 | int i; | |
87 | ||
88 | if (len == 0) | |
89 | return nfserr_inval; | |
90 | if (isdotent(str, len)) | |
a36b1725 | 91 | return nfserr_badname; |
1da177e4 LT |
92 | for (i = 0; i < len; i++) |
93 | if (str[i] == '/') | |
a36b1725 | 94 | return nfserr_badname; |
1da177e4 LT |
95 | return 0; |
96 | } | |
97 | ||
1da177e4 | 98 | #define DECODE_HEAD \ |
2ebbc012 | 99 | __be32 *p; \ |
b37ad28b | 100 | __be32 status |
1da177e4 LT |
101 | #define DECODE_TAIL \ |
102 | status = 0; \ | |
103 | out: \ | |
104 | return status; \ | |
105 | xdr_error: \ | |
817cb9d4 CL |
106 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
107 | __FILE__, __LINE__); \ | |
1da177e4 LT |
108 | status = nfserr_bad_xdr; \ |
109 | goto out | |
110 | ||
1da177e4 LT |
111 | #define READMEM(x,nbytes) do { \ |
112 | x = (char *)p; \ | |
113 | p += XDR_QUADLEN(nbytes); \ | |
114 | } while (0) | |
115 | #define SAVEMEM(x,nbytes) do { \ | |
116 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
117 | savemem(argp, p, nbytes) : \ | |
118 | (char *)p)) { \ | |
817cb9d4 CL |
119 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
120 | __FILE__, __LINE__); \ | |
1da177e4 LT |
121 | goto xdr_error; \ |
122 | } \ | |
123 | p += XDR_QUADLEN(nbytes); \ | |
124 | } while (0) | |
125 | #define COPYMEM(x,nbytes) do { \ | |
126 | memcpy((x), p, nbytes); \ | |
127 | p += XDR_QUADLEN(nbytes); \ | |
128 | } while (0) | |
129 | ||
130 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ | |
131 | #define READ_BUF(nbytes) do { \ | |
132 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ | |
133 | p = argp->p; \ | |
134 | argp->p += XDR_QUADLEN(nbytes); \ | |
135 | } else if (!(p = read_buf(argp, nbytes))) { \ | |
817cb9d4 CL |
136 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
137 | __FILE__, __LINE__); \ | |
1da177e4 LT |
138 | goto xdr_error; \ |
139 | } \ | |
140 | } while (0) | |
141 | ||
590b7431 BF |
142 | static void next_decode_page(struct nfsd4_compoundargs *argp) |
143 | { | |
590b7431 | 144 | argp->p = page_address(argp->pagelist[0]); |
365da4ad | 145 | argp->pagelist++; |
590b7431 | 146 | if (argp->pagelen < PAGE_SIZE) { |
fc788f64 | 147 | argp->end = argp->p + XDR_QUADLEN(argp->pagelen); |
590b7431 BF |
148 | argp->pagelen = 0; |
149 | } else { | |
150 | argp->end = argp->p + (PAGE_SIZE>>2); | |
151 | argp->pagelen -= PAGE_SIZE; | |
152 | } | |
153 | } | |
154 | ||
ca2a05aa | 155 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
1da177e4 LT |
156 | { |
157 | /* We want more bytes than seem to be available. | |
158 | * Maybe we need a new page, maybe we have just run out | |
159 | */ | |
ca2a05aa | 160 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
2ebbc012 | 161 | __be32 *p; |
eae03e2a CL |
162 | |
163 | if (argp->pagelen == 0) { | |
164 | struct kvec *vec = &argp->rqstp->rq_arg.tail[0]; | |
165 | ||
166 | if (!argp->tail) { | |
167 | argp->tail = true; | |
168 | avail = vec->iov_len; | |
169 | argp->p = vec->iov_base; | |
170 | argp->end = vec->iov_base + avail; | |
171 | } | |
172 | ||
173 | if (avail < nbytes) | |
174 | return NULL; | |
175 | ||
176 | p = argp->p; | |
177 | argp->p += XDR_QUADLEN(nbytes); | |
178 | return p; | |
179 | } | |
180 | ||
1da177e4 LT |
181 | if (avail + argp->pagelen < nbytes) |
182 | return NULL; | |
183 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ | |
184 | return NULL; | |
185 | /* ok, we can do it with the current plus the next page */ | |
186 | if (nbytes <= sizeof(argp->tmp)) | |
187 | p = argp->tmp; | |
188 | else { | |
f99d49ad | 189 | kfree(argp->tmpp); |
1da177e4 LT |
190 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
191 | if (!p) | |
192 | return NULL; | |
193 | ||
194 | } | |
ca2a05aa BF |
195 | /* |
196 | * The following memcpy is safe because read_buf is always | |
197 | * called with nbytes > avail, and the two cases above both | |
198 | * guarantee p points to at least nbytes bytes. | |
199 | */ | |
1da177e4 | 200 | memcpy(p, argp->p, avail); |
590b7431 | 201 | next_decode_page(argp); |
1da177e4 LT |
202 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); |
203 | argp->p += XDR_QUADLEN(nbytes - avail); | |
204 | return p; | |
205 | } | |
206 | ||
60adfc50 AA |
207 | static int zero_clientid(clientid_t *clid) |
208 | { | |
209 | return (clid->cl_boot == 0) && (clid->cl_id == 0); | |
210 | } | |
211 | ||
2d8498db | 212 | /** |
d5e23383 | 213 | * svcxdr_tmpalloc - allocate memory to be freed after compound processing |
ce043ac8 BF |
214 | * @argp: NFSv4 compound argument structure |
215 | * @p: pointer to be freed (with kfree()) | |
2d8498db CH |
216 | * |
217 | * Marks @p to be freed when processing the compound operation | |
218 | * described in @argp finishes. | |
219 | */ | |
d5e23383 BF |
220 | static void * |
221 | svcxdr_tmpalloc(struct nfsd4_compoundargs *argp, u32 len) | |
1da177e4 | 222 | { |
d5e23383 | 223 | struct svcxdr_tmpbuf *tb; |
1da177e4 | 224 | |
d5e23383 | 225 | tb = kmalloc(sizeof(*tb) + len, GFP_KERNEL); |
1da177e4 | 226 | if (!tb) |
d5e23383 | 227 | return NULL; |
1da177e4 LT |
228 | tb->next = argp->to_free; |
229 | argp->to_free = tb; | |
d5e23383 | 230 | return tb->buf; |
1da177e4 LT |
231 | } |
232 | ||
29c353b3 BF |
233 | /* |
234 | * For xdr strings that need to be passed to other kernel api's | |
235 | * as null-terminated strings. | |
236 | * | |
237 | * Note null-terminating in place usually isn't safe since the | |
238 | * buffer might end on a page boundary. | |
239 | */ | |
240 | static char * | |
241 | svcxdr_dupstr(struct nfsd4_compoundargs *argp, void *buf, u32 len) | |
242 | { | |
d5e23383 | 243 | char *p = svcxdr_tmpalloc(argp, len + 1); |
29c353b3 BF |
244 | |
245 | if (!p) | |
246 | return NULL; | |
247 | memcpy(p, buf, len); | |
248 | p[len] = '\0'; | |
29c353b3 | 249 | return p; |
1da177e4 LT |
250 | } |
251 | ||
2d8498db CH |
252 | /** |
253 | * savemem - duplicate a chunk of memory for later processing | |
254 | * @argp: NFSv4 compound argument structure to be freed with | |
255 | * @p: pointer to be duplicated | |
256 | * @nbytes: length to be duplicated | |
257 | * | |
258 | * Returns a pointer to a copy of @nbytes bytes of memory at @p | |
259 | * that are preserved until processing of the NFSv4 compound | |
260 | * operation described by @argp finishes. | |
261 | */ | |
2ebbc012 | 262 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
1da177e4 | 263 | { |
d5e23383 BF |
264 | void *ret; |
265 | ||
266 | ret = svcxdr_tmpalloc(argp, nbytes); | |
267 | if (!ret) | |
1da177e4 | 268 | return NULL; |
d5e23383 BF |
269 | memcpy(ret, p, nbytes); |
270 | return ret; | |
1da177e4 LT |
271 | } |
272 | ||
4c94e13e CH |
273 | /* |
274 | * We require the high 32 bits of 'seconds' to be 0, and | |
275 | * we ignore all 32 bits of 'nseconds'. | |
276 | */ | |
277 | static __be32 | |
278 | nfsd4_decode_time(struct nfsd4_compoundargs *argp, struct timespec *tv) | |
279 | { | |
280 | DECODE_HEAD; | |
281 | u64 sec; | |
282 | ||
283 | READ_BUF(12); | |
284 | p = xdr_decode_hyper(p, &sec); | |
285 | tv->tv_sec = sec; | |
286 | tv->tv_nsec = be32_to_cpup(p++); | |
287 | if (tv->tv_nsec >= (u32)1000000000) | |
288 | return nfserr_inval; | |
289 | ||
290 | DECODE_TAIL; | |
291 | } | |
292 | ||
b37ad28b | 293 | static __be32 |
1da177e4 LT |
294 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
295 | { | |
296 | u32 bmlen; | |
297 | DECODE_HEAD; | |
298 | ||
299 | bmval[0] = 0; | |
300 | bmval[1] = 0; | |
7e705706 | 301 | bmval[2] = 0; |
1da177e4 LT |
302 | |
303 | READ_BUF(4); | |
06553991 | 304 | bmlen = be32_to_cpup(p++); |
1da177e4 LT |
305 | if (bmlen > 1000) |
306 | goto xdr_error; | |
307 | ||
308 | READ_BUF(bmlen << 2); | |
309 | if (bmlen > 0) | |
06553991 | 310 | bmval[0] = be32_to_cpup(p++); |
1da177e4 | 311 | if (bmlen > 1) |
06553991 | 312 | bmval[1] = be32_to_cpup(p++); |
7e705706 | 313 | if (bmlen > 2) |
06553991 | 314 | bmval[2] = be32_to_cpup(p++); |
1da177e4 LT |
315 | |
316 | DECODE_TAIL; | |
317 | } | |
318 | ||
b37ad28b | 319 | static __be32 |
3c8e0316 | 320 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, |
18032ca0 | 321 | struct iattr *iattr, struct nfs4_acl **acl, |
47057abd | 322 | struct xdr_netobj *label, int *umask) |
1da177e4 LT |
323 | { |
324 | int expected_len, len = 0; | |
325 | u32 dummy32; | |
326 | char *buf; | |
327 | ||
328 | DECODE_HEAD; | |
329 | iattr->ia_valid = 0; | |
330 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
331 | return status; | |
332 | ||
e864c189 BF |
333 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
334 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 | |
335 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) { | |
336 | if (nfsd_attrs_supported(argp->minorversion, bmval)) | |
337 | return nfserr_inval; | |
338 | return nfserr_attrnotsupp; | |
339 | } | |
340 | ||
1da177e4 | 341 | READ_BUF(4); |
06553991 | 342 | expected_len = be32_to_cpup(p++); |
1da177e4 LT |
343 | |
344 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
345 | READ_BUF(8); | |
346 | len += 8; | |
542d1ab3 | 347 | p = xdr_decode_hyper(p, &iattr->ia_size); |
1da177e4 LT |
348 | iattr->ia_valid |= ATTR_SIZE; |
349 | } | |
350 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
64a817cf | 351 | u32 nace; |
28e05dd8 | 352 | struct nfs4_ace *ace; |
1da177e4 LT |
353 | |
354 | READ_BUF(4); len += 4; | |
06553991 | 355 | nace = be32_to_cpup(p++); |
1da177e4 | 356 | |
28e05dd8 | 357 | if (nace > NFS4_ACL_MAX) |
798df338 | 358 | return nfserr_fbig; |
28e05dd8 | 359 | |
d5e23383 | 360 | *acl = svcxdr_tmpalloc(argp, nfs4_acl_bytes(nace)); |
eba1c99c KM |
361 | if (*acl == NULL) |
362 | return nfserr_jukebox; | |
363 | ||
28e05dd8 BF |
364 | (*acl)->naces = nace; |
365 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { | |
1da177e4 | 366 | READ_BUF(16); len += 16; |
06553991 BF |
367 | ace->type = be32_to_cpup(p++); |
368 | ace->flag = be32_to_cpup(p++); | |
369 | ace->access_mask = be32_to_cpup(p++); | |
370 | dummy32 = be32_to_cpup(p++); | |
1da177e4 LT |
371 | READ_BUF(dummy32); |
372 | len += XDR_QUADLEN(dummy32) << 2; | |
373 | READMEM(buf, dummy32); | |
28e05dd8 | 374 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
3c726023 | 375 | status = nfs_ok; |
28e05dd8 | 376 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ab8e4aee | 377 | ; |
28e05dd8 | 378 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
3c726023 | 379 | status = nfsd_map_name_to_gid(argp->rqstp, |
ab8e4aee | 380 | buf, dummy32, &ace->who_gid); |
1da177e4 | 381 | else |
3c726023 | 382 | status = nfsd_map_name_to_uid(argp->rqstp, |
ab8e4aee | 383 | buf, dummy32, &ace->who_uid); |
3c726023 BF |
384 | if (status) |
385 | return status; | |
1da177e4 LT |
386 | } |
387 | } else | |
388 | *acl = NULL; | |
389 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
390 | READ_BUF(4); | |
391 | len += 4; | |
06553991 | 392 | iattr->ia_mode = be32_to_cpup(p++); |
1da177e4 LT |
393 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); |
394 | iattr->ia_valid |= ATTR_MODE; | |
395 | } | |
396 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
397 | READ_BUF(4); | |
398 | len += 4; | |
06553991 | 399 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
400 | READ_BUF(dummy32); |
401 | len += (XDR_QUADLEN(dummy32) << 2); | |
402 | READMEM(buf, dummy32); | |
47c85291 N |
403 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
404 | return status; | |
1da177e4 LT |
405 | iattr->ia_valid |= ATTR_UID; |
406 | } | |
407 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
408 | READ_BUF(4); | |
409 | len += 4; | |
06553991 | 410 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
411 | READ_BUF(dummy32); |
412 | len += (XDR_QUADLEN(dummy32) << 2); | |
413 | READMEM(buf, dummy32); | |
47c85291 N |
414 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
415 | return status; | |
1da177e4 LT |
416 | iattr->ia_valid |= ATTR_GID; |
417 | } | |
418 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
419 | READ_BUF(4); | |
420 | len += 4; | |
06553991 | 421 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
422 | switch (dummy32) { |
423 | case NFS4_SET_TO_CLIENT_TIME: | |
1da177e4 | 424 | len += 12; |
4c94e13e CH |
425 | status = nfsd4_decode_time(argp, &iattr->ia_atime); |
426 | if (status) | |
427 | return status; | |
1da177e4 LT |
428 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); |
429 | break; | |
430 | case NFS4_SET_TO_SERVER_TIME: | |
431 | iattr->ia_valid |= ATTR_ATIME; | |
432 | break; | |
433 | default: | |
434 | goto xdr_error; | |
435 | } | |
436 | } | |
1da177e4 LT |
437 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
438 | READ_BUF(4); | |
439 | len += 4; | |
06553991 | 440 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
441 | switch (dummy32) { |
442 | case NFS4_SET_TO_CLIENT_TIME: | |
1da177e4 | 443 | len += 12; |
4c94e13e CH |
444 | status = nfsd4_decode_time(argp, &iattr->ia_mtime); |
445 | if (status) | |
446 | return status; | |
1da177e4 LT |
447 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); |
448 | break; | |
449 | case NFS4_SET_TO_SERVER_TIME: | |
450 | iattr->ia_valid |= ATTR_MTIME; | |
451 | break; | |
452 | default: | |
453 | goto xdr_error; | |
454 | } | |
455 | } | |
18032ca0 DQ |
456 | |
457 | label->len = 0; | |
458 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL | |
459 | if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) { | |
460 | READ_BUF(4); | |
461 | len += 4; | |
06553991 | 462 | dummy32 = be32_to_cpup(p++); /* lfs: we don't use it */ |
18032ca0 DQ |
463 | READ_BUF(4); |
464 | len += 4; | |
06553991 | 465 | dummy32 = be32_to_cpup(p++); /* pi: we don't use it either */ |
18032ca0 DQ |
466 | READ_BUF(4); |
467 | len += 4; | |
06553991 | 468 | dummy32 = be32_to_cpup(p++); |
18032ca0 | 469 | READ_BUF(dummy32); |
1ec8c0c4 | 470 | if (dummy32 > NFS4_MAXLABELLEN) |
18032ca0 DQ |
471 | return nfserr_badlabel; |
472 | len += (XDR_QUADLEN(dummy32) << 2); | |
473 | READMEM(buf, dummy32); | |
29c353b3 BF |
474 | label->len = dummy32; |
475 | label->data = svcxdr_dupstr(argp, buf, dummy32); | |
18032ca0 DQ |
476 | if (!label->data) |
477 | return nfserr_jukebox; | |
18032ca0 DQ |
478 | } |
479 | #endif | |
47057abd AG |
480 | if (bmval[2] & FATTR4_WORD2_MODE_UMASK) { |
481 | if (!umask) | |
482 | goto xdr_error; | |
483 | READ_BUF(8); | |
484 | len += 8; | |
485 | dummy32 = be32_to_cpup(p++); | |
486 | iattr->ia_mode = dummy32 & (S_IFMT | S_IALLUGO); | |
487 | dummy32 = be32_to_cpup(p++); | |
488 | *umask = dummy32 & S_IRWXUGO; | |
489 | iattr->ia_valid |= ATTR_MODE; | |
490 | } | |
e864c189 | 491 | if (len != expected_len) |
1da177e4 LT |
492 | goto xdr_error; |
493 | ||
494 | DECODE_TAIL; | |
1da177e4 LT |
495 | } |
496 | ||
e31a1b66 BH |
497 | static __be32 |
498 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
499 | { | |
500 | DECODE_HEAD; | |
501 | ||
502 | READ_BUF(sizeof(stateid_t)); | |
06553991 | 503 | sid->si_generation = be32_to_cpup(p++); |
e31a1b66 BH |
504 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); |
505 | ||
506 | DECODE_TAIL; | |
507 | } | |
508 | ||
b37ad28b | 509 | static __be32 |
1da177e4 LT |
510 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
511 | { | |
512 | DECODE_HEAD; | |
513 | ||
514 | READ_BUF(4); | |
06553991 | 515 | access->ac_req_access = be32_to_cpup(p++); |
1da177e4 LT |
516 | |
517 | DECODE_TAIL; | |
518 | } | |
519 | ||
acb2887e BF |
520 | static __be32 nfsd4_decode_cb_sec(struct nfsd4_compoundargs *argp, struct nfsd4_cb_sec *cbs) |
521 | { | |
522 | DECODE_HEAD; | |
12fc3e92 | 523 | u32 dummy, uid, gid; |
acb2887e BF |
524 | char *machine_name; |
525 | int i; | |
526 | int nr_secflavs; | |
527 | ||
528 | /* callback_sec_params4 */ | |
529 | READ_BUF(4); | |
06553991 | 530 | nr_secflavs = be32_to_cpup(p++); |
57569a70 BF |
531 | if (nr_secflavs) |
532 | cbs->flavor = (u32)(-1); | |
533 | else | |
534 | /* Is this legal? Be generous, take it to mean AUTH_NONE: */ | |
535 | cbs->flavor = 0; | |
acb2887e BF |
536 | for (i = 0; i < nr_secflavs; ++i) { |
537 | READ_BUF(4); | |
06553991 | 538 | dummy = be32_to_cpup(p++); |
acb2887e BF |
539 | switch (dummy) { |
540 | case RPC_AUTH_NULL: | |
541 | /* Nothing to read */ | |
12fc3e92 BF |
542 | if (cbs->flavor == (u32)(-1)) |
543 | cbs->flavor = RPC_AUTH_NULL; | |
acb2887e BF |
544 | break; |
545 | case RPC_AUTH_UNIX: | |
546 | READ_BUF(8); | |
547 | /* stamp */ | |
06553991 | 548 | dummy = be32_to_cpup(p++); |
acb2887e BF |
549 | |
550 | /* machine name */ | |
06553991 | 551 | dummy = be32_to_cpup(p++); |
acb2887e BF |
552 | READ_BUF(dummy); |
553 | SAVEMEM(machine_name, dummy); | |
554 | ||
555 | /* uid, gid */ | |
556 | READ_BUF(8); | |
06553991 BF |
557 | uid = be32_to_cpup(p++); |
558 | gid = be32_to_cpup(p++); | |
acb2887e BF |
559 | |
560 | /* more gids */ | |
561 | READ_BUF(4); | |
06553991 | 562 | dummy = be32_to_cpup(p++); |
acb2887e | 563 | READ_BUF(dummy * 4); |
12fc3e92 | 564 | if (cbs->flavor == (u32)(-1)) { |
03bc6d1c EB |
565 | kuid_t kuid = make_kuid(&init_user_ns, uid); |
566 | kgid_t kgid = make_kgid(&init_user_ns, gid); | |
567 | if (uid_valid(kuid) && gid_valid(kgid)) { | |
568 | cbs->uid = kuid; | |
569 | cbs->gid = kgid; | |
570 | cbs->flavor = RPC_AUTH_UNIX; | |
571 | } else { | |
572 | dprintk("RPC_AUTH_UNIX with invalid" | |
573 | "uid or gid ignoring!\n"); | |
574 | } | |
12fc3e92 | 575 | } |
acb2887e BF |
576 | break; |
577 | case RPC_AUTH_GSS: | |
578 | dprintk("RPC_AUTH_GSS callback secflavor " | |
579 | "not supported!\n"); | |
580 | READ_BUF(8); | |
581 | /* gcbp_service */ | |
06553991 | 582 | dummy = be32_to_cpup(p++); |
acb2887e | 583 | /* gcbp_handle_from_server */ |
06553991 | 584 | dummy = be32_to_cpup(p++); |
acb2887e BF |
585 | READ_BUF(dummy); |
586 | p += XDR_QUADLEN(dummy); | |
587 | /* gcbp_handle_from_client */ | |
588 | READ_BUF(4); | |
06553991 | 589 | dummy = be32_to_cpup(p++); |
acb2887e BF |
590 | READ_BUF(dummy); |
591 | break; | |
592 | default: | |
593 | dprintk("Illegal callback secflavor\n"); | |
594 | return nfserr_inval; | |
595 | } | |
596 | } | |
597 | DECODE_TAIL; | |
598 | } | |
599 | ||
cb73a9f4 BF |
600 | static __be32 nfsd4_decode_backchannel_ctl(struct nfsd4_compoundargs *argp, struct nfsd4_backchannel_ctl *bc) |
601 | { | |
602 | DECODE_HEAD; | |
603 | ||
604 | READ_BUF(4); | |
06553991 | 605 | bc->bc_cb_program = be32_to_cpup(p++); |
cb73a9f4 BF |
606 | nfsd4_decode_cb_sec(argp, &bc->bc_cb_sec); |
607 | ||
608 | DECODE_TAIL; | |
609 | } | |
610 | ||
1d1bc8f2 BF |
611 | static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) |
612 | { | |
613 | DECODE_HEAD; | |
1d1bc8f2 BF |
614 | |
615 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 8); | |
616 | COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
06553991 | 617 | bcts->dir = be32_to_cpup(p++); |
6ce2357f BS |
618 | /* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker |
619 | * could help us figure out we should be using it. */ | |
1d1bc8f2 BF |
620 | DECODE_TAIL; |
621 | } | |
622 | ||
b37ad28b | 623 | static __be32 |
1da177e4 LT |
624 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
625 | { | |
626 | DECODE_HEAD; | |
627 | ||
e31a1b66 | 628 | READ_BUF(4); |
06553991 | 629 | close->cl_seqid = be32_to_cpup(p++); |
e31a1b66 | 630 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
1da177e4 LT |
631 | |
632 | DECODE_TAIL; | |
633 | } | |
634 | ||
635 | ||
b37ad28b | 636 | static __be32 |
1da177e4 LT |
637 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
638 | { | |
639 | DECODE_HEAD; | |
640 | ||
641 | READ_BUF(12); | |
542d1ab3 | 642 | p = xdr_decode_hyper(p, &commit->co_offset); |
06553991 | 643 | commit->co_count = be32_to_cpup(p++); |
1da177e4 LT |
644 | |
645 | DECODE_TAIL; | |
646 | } | |
647 | ||
b37ad28b | 648 | static __be32 |
1da177e4 LT |
649 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
650 | { | |
651 | DECODE_HEAD; | |
652 | ||
653 | READ_BUF(4); | |
06553991 | 654 | create->cr_type = be32_to_cpup(p++); |
1da177e4 LT |
655 | switch (create->cr_type) { |
656 | case NF4LNK: | |
657 | READ_BUF(4); | |
7fb84306 BF |
658 | create->cr_datalen = be32_to_cpup(p++); |
659 | READ_BUF(create->cr_datalen); | |
29c353b3 | 660 | create->cr_data = svcxdr_dupstr(argp, p, create->cr_datalen); |
7fb84306 | 661 | if (!create->cr_data) |
76f47128 | 662 | return nfserr_jukebox; |
1da177e4 LT |
663 | break; |
664 | case NF4BLK: | |
665 | case NF4CHR: | |
666 | READ_BUF(8); | |
06553991 BF |
667 | create->cr_specdata1 = be32_to_cpup(p++); |
668 | create->cr_specdata2 = be32_to_cpup(p++); | |
1da177e4 LT |
669 | break; |
670 | case NF4SOCK: | |
671 | case NF4FIFO: | |
672 | case NF4DIR: | |
673 | default: | |
674 | break; | |
675 | } | |
676 | ||
677 | READ_BUF(4); | |
06553991 | 678 | create->cr_namelen = be32_to_cpup(p++); |
1da177e4 LT |
679 | READ_BUF(create->cr_namelen); |
680 | SAVEMEM(create->cr_name, create->cr_namelen); | |
a36b1725 | 681 | if ((status = check_filename(create->cr_name, create->cr_namelen))) |
1da177e4 LT |
682 | return status; |
683 | ||
3c8e0316 | 684 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
47057abd AG |
685 | &create->cr_acl, &create->cr_label, |
686 | ¤t->fs->umask); | |
c0d6fc8a | 687 | if (status) |
1da177e4 LT |
688 | goto out; |
689 | ||
690 | DECODE_TAIL; | |
691 | } | |
692 | ||
b37ad28b | 693 | static inline __be32 |
1da177e4 LT |
694 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
695 | { | |
e31a1b66 | 696 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
1da177e4 LT |
697 | } |
698 | ||
b37ad28b | 699 | static inline __be32 |
1da177e4 LT |
700 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
701 | { | |
702 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
703 | } | |
704 | ||
b37ad28b | 705 | static __be32 |
1da177e4 LT |
706 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
707 | { | |
708 | DECODE_HEAD; | |
709 | ||
710 | READ_BUF(4); | |
06553991 | 711 | link->li_namelen = be32_to_cpup(p++); |
1da177e4 LT |
712 | READ_BUF(link->li_namelen); |
713 | SAVEMEM(link->li_name, link->li_namelen); | |
a36b1725 | 714 | if ((status = check_filename(link->li_name, link->li_namelen))) |
1da177e4 LT |
715 | return status; |
716 | ||
717 | DECODE_TAIL; | |
718 | } | |
719 | ||
b37ad28b | 720 | static __be32 |
1da177e4 LT |
721 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
722 | { | |
723 | DECODE_HEAD; | |
724 | ||
1da177e4 LT |
725 | /* |
726 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
727 | */ | |
728 | READ_BUF(28); | |
06553991 | 729 | lock->lk_type = be32_to_cpup(p++); |
1da177e4 LT |
730 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) |
731 | goto xdr_error; | |
06553991 | 732 | lock->lk_reclaim = be32_to_cpup(p++); |
542d1ab3 BF |
733 | p = xdr_decode_hyper(p, &lock->lk_offset); |
734 | p = xdr_decode_hyper(p, &lock->lk_length); | |
06553991 | 735 | lock->lk_is_new = be32_to_cpup(p++); |
1da177e4 LT |
736 | |
737 | if (lock->lk_is_new) { | |
e31a1b66 | 738 | READ_BUF(4); |
06553991 | 739 | lock->lk_new_open_seqid = be32_to_cpup(p++); |
e31a1b66 BH |
740 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
741 | if (status) | |
742 | return status; | |
743 | READ_BUF(8 + sizeof(clientid_t)); | |
06553991 | 744 | lock->lk_new_lock_seqid = be32_to_cpup(p++); |
1da177e4 | 745 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); |
06553991 | 746 | lock->lk_new_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
747 | READ_BUF(lock->lk_new_owner.len); |
748 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
749 | } else { | |
e31a1b66 BH |
750 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
751 | if (status) | |
752 | return status; | |
753 | READ_BUF(4); | |
06553991 | 754 | lock->lk_old_lock_seqid = be32_to_cpup(p++); |
1da177e4 LT |
755 | } |
756 | ||
757 | DECODE_TAIL; | |
758 | } | |
759 | ||
b37ad28b | 760 | static __be32 |
1da177e4 LT |
761 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
762 | { | |
763 | DECODE_HEAD; | |
764 | ||
765 | READ_BUF(32); | |
06553991 | 766 | lockt->lt_type = be32_to_cpup(p++); |
1da177e4 LT |
767 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) |
768 | goto xdr_error; | |
542d1ab3 BF |
769 | p = xdr_decode_hyper(p, &lockt->lt_offset); |
770 | p = xdr_decode_hyper(p, &lockt->lt_length); | |
1da177e4 | 771 | COPYMEM(&lockt->lt_clientid, 8); |
06553991 | 772 | lockt->lt_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
773 | READ_BUF(lockt->lt_owner.len); |
774 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
775 | ||
776 | DECODE_TAIL; | |
777 | } | |
778 | ||
b37ad28b | 779 | static __be32 |
1da177e4 LT |
780 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
781 | { | |
782 | DECODE_HEAD; | |
783 | ||
e31a1b66 | 784 | READ_BUF(8); |
06553991 | 785 | locku->lu_type = be32_to_cpup(p++); |
1da177e4 LT |
786 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) |
787 | goto xdr_error; | |
06553991 | 788 | locku->lu_seqid = be32_to_cpup(p++); |
e31a1b66 BH |
789 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
790 | if (status) | |
791 | return status; | |
792 | READ_BUF(16); | |
542d1ab3 BF |
793 | p = xdr_decode_hyper(p, &locku->lu_offset); |
794 | p = xdr_decode_hyper(p, &locku->lu_length); | |
1da177e4 LT |
795 | |
796 | DECODE_TAIL; | |
797 | } | |
798 | ||
b37ad28b | 799 | static __be32 |
1da177e4 LT |
800 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
801 | { | |
802 | DECODE_HEAD; | |
803 | ||
804 | READ_BUF(4); | |
06553991 | 805 | lookup->lo_len = be32_to_cpup(p++); |
1da177e4 LT |
806 | READ_BUF(lookup->lo_len); |
807 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
a36b1725 | 808 | if ((status = check_filename(lookup->lo_name, lookup->lo_len))) |
1da177e4 LT |
809 | return status; |
810 | ||
811 | DECODE_TAIL; | |
812 | } | |
813 | ||
2c8bd7e0 | 814 | static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when) |
04f9e664 BF |
815 | { |
816 | __be32 *p; | |
817 | u32 w; | |
818 | ||
819 | READ_BUF(4); | |
06553991 | 820 | w = be32_to_cpup(p++); |
2c8bd7e0 BH |
821 | *share_access = w & NFS4_SHARE_ACCESS_MASK; |
822 | *deleg_want = w & NFS4_SHARE_WANT_MASK; | |
823 | if (deleg_when) | |
824 | *deleg_when = w & NFS4_SHARE_WHEN_MASK; | |
825 | ||
04f9e664 BF |
826 | switch (w & NFS4_SHARE_ACCESS_MASK) { |
827 | case NFS4_SHARE_ACCESS_READ: | |
828 | case NFS4_SHARE_ACCESS_WRITE: | |
829 | case NFS4_SHARE_ACCESS_BOTH: | |
830 | break; | |
831 | default: | |
832 | return nfserr_bad_xdr; | |
833 | } | |
fc0d14fe | 834 | w &= ~NFS4_SHARE_ACCESS_MASK; |
04f9e664 BF |
835 | if (!w) |
836 | return nfs_ok; | |
837 | if (!argp->minorversion) | |
838 | return nfserr_bad_xdr; | |
839 | switch (w & NFS4_SHARE_WANT_MASK) { | |
840 | case NFS4_SHARE_WANT_NO_PREFERENCE: | |
841 | case NFS4_SHARE_WANT_READ_DELEG: | |
842 | case NFS4_SHARE_WANT_WRITE_DELEG: | |
843 | case NFS4_SHARE_WANT_ANY_DELEG: | |
844 | case NFS4_SHARE_WANT_NO_DELEG: | |
845 | case NFS4_SHARE_WANT_CANCEL: | |
846 | break; | |
847 | default: | |
848 | return nfserr_bad_xdr; | |
849 | } | |
92bac8c5 | 850 | w &= ~NFS4_SHARE_WANT_MASK; |
04f9e664 BF |
851 | if (!w) |
852 | return nfs_ok; | |
2c8bd7e0 BH |
853 | |
854 | if (!deleg_when) /* open_downgrade */ | |
855 | return nfserr_inval; | |
04f9e664 BF |
856 | switch (w) { |
857 | case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL: | |
858 | case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED: | |
c668fc6d BH |
859 | case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL | |
860 | NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED): | |
04f9e664 BF |
861 | return nfs_ok; |
862 | } | |
863 | xdr_error: | |
864 | return nfserr_bad_xdr; | |
865 | } | |
866 | ||
867 | static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x) | |
868 | { | |
869 | __be32 *p; | |
870 | ||
871 | READ_BUF(4); | |
06553991 | 872 | *x = be32_to_cpup(p++); |
04f9e664 | 873 | /* Note: unlinke access bits, deny bits may be zero. */ |
01cd4afa | 874 | if (*x & ~NFS4_SHARE_DENY_BOTH) |
04f9e664 BF |
875 | return nfserr_bad_xdr; |
876 | return nfs_ok; | |
877 | xdr_error: | |
878 | return nfserr_bad_xdr; | |
879 | } | |
880 | ||
a084daf5 BF |
881 | static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o) |
882 | { | |
883 | __be32 *p; | |
884 | ||
885 | READ_BUF(4); | |
06553991 | 886 | o->len = be32_to_cpup(p++); |
a084daf5 BF |
887 | |
888 | if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT) | |
889 | return nfserr_bad_xdr; | |
890 | ||
891 | READ_BUF(o->len); | |
892 | SAVEMEM(o->data, o->len); | |
893 | return nfs_ok; | |
894 | xdr_error: | |
895 | return nfserr_bad_xdr; | |
896 | } | |
897 | ||
b37ad28b | 898 | static __be32 |
1da177e4 LT |
899 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
900 | { | |
901 | DECODE_HEAD; | |
2c8bd7e0 | 902 | u32 dummy; |
1da177e4 LT |
903 | |
904 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
905 | open->op_iattr.ia_valid = 0; | |
fe0750e5 | 906 | open->op_openowner = NULL; |
1da177e4 | 907 | |
9d313b17 | 908 | open->op_xdr_error = 0; |
1da177e4 | 909 | /* seqid, share_access, share_deny, clientid, ownerlen */ |
04f9e664 | 910 | READ_BUF(4); |
06553991 | 911 | open->op_seqid = be32_to_cpup(p++); |
2c8bd7e0 BH |
912 | /* decode, yet ignore deleg_when until supported */ |
913 | status = nfsd4_decode_share_access(argp, &open->op_share_access, | |
914 | &open->op_deleg_want, &dummy); | |
04f9e664 BF |
915 | if (status) |
916 | goto xdr_error; | |
917 | status = nfsd4_decode_share_deny(argp, &open->op_share_deny); | |
918 | if (status) | |
919 | goto xdr_error; | |
a084daf5 | 920 | READ_BUF(sizeof(clientid_t)); |
1da177e4 | 921 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); |
a084daf5 BF |
922 | status = nfsd4_decode_opaque(argp, &open->op_owner); |
923 | if (status) | |
924 | goto xdr_error; | |
925 | READ_BUF(4); | |
06553991 | 926 | open->op_create = be32_to_cpup(p++); |
1da177e4 LT |
927 | switch (open->op_create) { |
928 | case NFS4_OPEN_NOCREATE: | |
929 | break; | |
930 | case NFS4_OPEN_CREATE: | |
47057abd | 931 | current->fs->umask = 0; |
1da177e4 | 932 | READ_BUF(4); |
06553991 | 933 | open->op_createmode = be32_to_cpup(p++); |
1da177e4 LT |
934 | switch (open->op_createmode) { |
935 | case NFS4_CREATE_UNCHECKED: | |
936 | case NFS4_CREATE_GUARDED: | |
c0d6fc8a | 937 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
47057abd AG |
938 | &open->op_iattr, &open->op_acl, &open->op_label, |
939 | ¤t->fs->umask); | |
c0d6fc8a | 940 | if (status) |
1da177e4 LT |
941 | goto out; |
942 | break; | |
943 | case NFS4_CREATE_EXCLUSIVE: | |
ab4684d1 CL |
944 | READ_BUF(NFS4_VERIFIER_SIZE); |
945 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 946 | break; |
79fb54ab BH |
947 | case NFS4_CREATE_EXCLUSIVE4_1: |
948 | if (argp->minorversion < 1) | |
949 | goto xdr_error; | |
ab4684d1 CL |
950 | READ_BUF(NFS4_VERIFIER_SIZE); |
951 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
79fb54ab | 952 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
47057abd AG |
953 | &open->op_iattr, &open->op_acl, &open->op_label, |
954 | ¤t->fs->umask); | |
79fb54ab BH |
955 | if (status) |
956 | goto out; | |
957 | break; | |
1da177e4 LT |
958 | default: |
959 | goto xdr_error; | |
960 | } | |
961 | break; | |
962 | default: | |
963 | goto xdr_error; | |
964 | } | |
965 | ||
966 | /* open_claim */ | |
967 | READ_BUF(4); | |
06553991 | 968 | open->op_claim_type = be32_to_cpup(p++); |
1da177e4 LT |
969 | switch (open->op_claim_type) { |
970 | case NFS4_OPEN_CLAIM_NULL: | |
971 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
972 | READ_BUF(4); | |
06553991 | 973 | open->op_fname.len = be32_to_cpup(p++); |
1da177e4 LT |
974 | READ_BUF(open->op_fname.len); |
975 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 976 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
977 | return status; |
978 | break; | |
979 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
980 | READ_BUF(4); | |
06553991 | 981 | open->op_delegate_type = be32_to_cpup(p++); |
1da177e4 LT |
982 | break; |
983 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
e31a1b66 BH |
984 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
985 | if (status) | |
986 | return status; | |
987 | READ_BUF(4); | |
06553991 | 988 | open->op_fname.len = be32_to_cpup(p++); |
1da177e4 LT |
989 | READ_BUF(open->op_fname.len); |
990 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 991 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
992 | return status; |
993 | break; | |
8b289b2c BF |
994 | case NFS4_OPEN_CLAIM_FH: |
995 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
996 | if (argp->minorversion < 1) | |
997 | goto xdr_error; | |
998 | /* void */ | |
999 | break; | |
1000 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1001 | if (argp->minorversion < 1) | |
1002 | goto xdr_error; | |
1003 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); | |
1004 | if (status) | |
1005 | return status; | |
1006 | break; | |
1da177e4 LT |
1007 | default: |
1008 | goto xdr_error; | |
1009 | } | |
1010 | ||
1011 | DECODE_TAIL; | |
1012 | } | |
1013 | ||
b37ad28b | 1014 | static __be32 |
1da177e4 LT |
1015 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
1016 | { | |
1017 | DECODE_HEAD; | |
e1a90ebd AS |
1018 | |
1019 | if (argp->minorversion >= 1) | |
1020 | return nfserr_notsupp; | |
1021 | ||
e31a1b66 BH |
1022 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
1023 | if (status) | |
1024 | return status; | |
1025 | READ_BUF(4); | |
06553991 | 1026 | open_conf->oc_seqid = be32_to_cpup(p++); |
e1a90ebd | 1027 | |
1da177e4 LT |
1028 | DECODE_TAIL; |
1029 | } | |
1030 | ||
b37ad28b | 1031 | static __be32 |
1da177e4 LT |
1032 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
1033 | { | |
1034 | DECODE_HEAD; | |
1035 | ||
e31a1b66 BH |
1036 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
1037 | if (status) | |
1038 | return status; | |
04f9e664 | 1039 | READ_BUF(4); |
06553991 | 1040 | open_down->od_seqid = be32_to_cpup(p++); |
2c8bd7e0 BH |
1041 | status = nfsd4_decode_share_access(argp, &open_down->od_share_access, |
1042 | &open_down->od_deleg_want, NULL); | |
04f9e664 BF |
1043 | if (status) |
1044 | return status; | |
1045 | status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny); | |
1046 | if (status) | |
1047 | return status; | |
1da177e4 LT |
1048 | DECODE_TAIL; |
1049 | } | |
1050 | ||
b37ad28b | 1051 | static __be32 |
1da177e4 LT |
1052 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
1053 | { | |
1054 | DECODE_HEAD; | |
1055 | ||
1056 | READ_BUF(4); | |
06553991 | 1057 | putfh->pf_fhlen = be32_to_cpup(p++); |
1da177e4 LT |
1058 | if (putfh->pf_fhlen > NFS4_FHSIZE) |
1059 | goto xdr_error; | |
1060 | READ_BUF(putfh->pf_fhlen); | |
1061 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
1062 | ||
1063 | DECODE_TAIL; | |
1064 | } | |
1065 | ||
e1a90ebd AS |
1066 | static __be32 |
1067 | nfsd4_decode_putpubfh(struct nfsd4_compoundargs *argp, void *p) | |
1068 | { | |
1069 | if (argp->minorversion == 0) | |
1070 | return nfs_ok; | |
1071 | return nfserr_notsupp; | |
1072 | } | |
1073 | ||
b37ad28b | 1074 | static __be32 |
1da177e4 LT |
1075 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
1076 | { | |
1077 | DECODE_HEAD; | |
1078 | ||
e31a1b66 BH |
1079 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
1080 | if (status) | |
1081 | return status; | |
1082 | READ_BUF(12); | |
542d1ab3 | 1083 | p = xdr_decode_hyper(p, &read->rd_offset); |
06553991 | 1084 | read->rd_length = be32_to_cpup(p++); |
1da177e4 LT |
1085 | |
1086 | DECODE_TAIL; | |
1087 | } | |
1088 | ||
b37ad28b | 1089 | static __be32 |
1da177e4 LT |
1090 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
1091 | { | |
1092 | DECODE_HEAD; | |
1093 | ||
1094 | READ_BUF(24); | |
542d1ab3 | 1095 | p = xdr_decode_hyper(p, &readdir->rd_cookie); |
1da177e4 | 1096 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); |
06553991 BF |
1097 | readdir->rd_dircount = be32_to_cpup(p++); |
1098 | readdir->rd_maxcount = be32_to_cpup(p++); | |
1da177e4 LT |
1099 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) |
1100 | goto out; | |
1101 | ||
1102 | DECODE_TAIL; | |
1103 | } | |
1104 | ||
b37ad28b | 1105 | static __be32 |
1da177e4 LT |
1106 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
1107 | { | |
1108 | DECODE_HEAD; | |
1109 | ||
1110 | READ_BUF(4); | |
06553991 | 1111 | remove->rm_namelen = be32_to_cpup(p++); |
1da177e4 LT |
1112 | READ_BUF(remove->rm_namelen); |
1113 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
a36b1725 | 1114 | if ((status = check_filename(remove->rm_name, remove->rm_namelen))) |
1da177e4 LT |
1115 | return status; |
1116 | ||
1117 | DECODE_TAIL; | |
1118 | } | |
1119 | ||
b37ad28b | 1120 | static __be32 |
1da177e4 LT |
1121 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
1122 | { | |
1123 | DECODE_HEAD; | |
1124 | ||
1125 | READ_BUF(4); | |
06553991 | 1126 | rename->rn_snamelen = be32_to_cpup(p++); |
4aed9c46 | 1127 | READ_BUF(rename->rn_snamelen); |
1da177e4 | 1128 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); |
4aed9c46 | 1129 | READ_BUF(4); |
06553991 | 1130 | rename->rn_tnamelen = be32_to_cpup(p++); |
1da177e4 LT |
1131 | READ_BUF(rename->rn_tnamelen); |
1132 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
a36b1725 | 1133 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen))) |
1da177e4 | 1134 | return status; |
a36b1725 | 1135 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen))) |
1da177e4 LT |
1136 | return status; |
1137 | ||
1138 | DECODE_TAIL; | |
1139 | } | |
1140 | ||
b37ad28b | 1141 | static __be32 |
1da177e4 LT |
1142 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
1143 | { | |
1144 | DECODE_HEAD; | |
1145 | ||
e1a90ebd AS |
1146 | if (argp->minorversion >= 1) |
1147 | return nfserr_notsupp; | |
1148 | ||
1da177e4 LT |
1149 | READ_BUF(sizeof(clientid_t)); |
1150 | COPYMEM(clientid, sizeof(clientid_t)); | |
1151 | ||
1152 | DECODE_TAIL; | |
1153 | } | |
1154 | ||
dcb488a3 AA |
1155 | static __be32 |
1156 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
1157 | struct nfsd4_secinfo *secinfo) | |
1158 | { | |
1159 | DECODE_HEAD; | |
1160 | ||
1161 | READ_BUF(4); | |
06553991 | 1162 | secinfo->si_namelen = be32_to_cpup(p++); |
dcb488a3 AA |
1163 | READ_BUF(secinfo->si_namelen); |
1164 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
a36b1725 | 1165 | status = check_filename(secinfo->si_name, secinfo->si_namelen); |
dcb488a3 AA |
1166 | if (status) |
1167 | return status; | |
1168 | DECODE_TAIL; | |
1169 | } | |
1170 | ||
04f4ad16 BF |
1171 | static __be32 |
1172 | nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, | |
1173 | struct nfsd4_secinfo_no_name *sin) | |
1174 | { | |
1175 | DECODE_HEAD; | |
1176 | ||
1177 | READ_BUF(4); | |
06553991 | 1178 | sin->sin_style = be32_to_cpup(p++); |
04f4ad16 BF |
1179 | DECODE_TAIL; |
1180 | } | |
1181 | ||
b37ad28b | 1182 | static __be32 |
1da177e4 LT |
1183 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
1184 | { | |
e31a1b66 | 1185 | __be32 status; |
1da177e4 | 1186 | |
e31a1b66 BH |
1187 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
1188 | if (status) | |
1189 | return status; | |
3c8e0316 | 1190 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
47057abd | 1191 | &setattr->sa_acl, &setattr->sa_label, NULL); |
1da177e4 LT |
1192 | } |
1193 | ||
b37ad28b | 1194 | static __be32 |
1da177e4 LT |
1195 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
1196 | { | |
1197 | DECODE_HEAD; | |
1198 | ||
e1a90ebd AS |
1199 | if (argp->minorversion >= 1) |
1200 | return nfserr_notsupp; | |
1201 | ||
ab4684d1 CL |
1202 | READ_BUF(NFS4_VERIFIER_SIZE); |
1203 | COPYMEM(setclientid->se_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 1204 | |
a084daf5 BF |
1205 | status = nfsd4_decode_opaque(argp, &setclientid->se_name); |
1206 | if (status) | |
1207 | return nfserr_bad_xdr; | |
1208 | READ_BUF(8); | |
06553991 BF |
1209 | setclientid->se_callback_prog = be32_to_cpup(p++); |
1210 | setclientid->se_callback_netid_len = be32_to_cpup(p++); | |
4aed9c46 | 1211 | READ_BUF(setclientid->se_callback_netid_len); |
1da177e4 | 1212 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); |
4aed9c46 | 1213 | READ_BUF(4); |
06553991 | 1214 | setclientid->se_callback_addr_len = be32_to_cpup(p++); |
1da177e4 | 1215 | |
4aed9c46 | 1216 | READ_BUF(setclientid->se_callback_addr_len); |
1da177e4 | 1217 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); |
4aed9c46 | 1218 | READ_BUF(4); |
06553991 | 1219 | setclientid->se_callback_ident = be32_to_cpup(p++); |
1da177e4 LT |
1220 | |
1221 | DECODE_TAIL; | |
1222 | } | |
1223 | ||
b37ad28b | 1224 | static __be32 |
1da177e4 LT |
1225 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
1226 | { | |
1227 | DECODE_HEAD; | |
1228 | ||
e1a90ebd AS |
1229 | if (argp->minorversion >= 1) |
1230 | return nfserr_notsupp; | |
1231 | ||
ab4684d1 | 1232 | READ_BUF(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 1233 | COPYMEM(&scd_c->sc_clientid, 8); |
ab4684d1 | 1234 | COPYMEM(&scd_c->sc_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
1235 | |
1236 | DECODE_TAIL; | |
1237 | } | |
1238 | ||
1239 | /* Also used for NVERIFY */ | |
b37ad28b | 1240 | static __be32 |
1da177e4 LT |
1241 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
1242 | { | |
1da177e4 LT |
1243 | DECODE_HEAD; |
1244 | ||
1245 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
1246 | goto out; | |
1247 | ||
1248 | /* For convenience's sake, we compare raw xdr'd attributes in | |
e5f95703 BF |
1249 | * nfsd4_proc_verify */ |
1250 | ||
1da177e4 | 1251 | READ_BUF(4); |
06553991 | 1252 | verify->ve_attrlen = be32_to_cpup(p++); |
1da177e4 LT |
1253 | READ_BUF(verify->ve_attrlen); |
1254 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
1255 | ||
1256 | DECODE_TAIL; | |
1257 | } | |
1258 | ||
b37ad28b | 1259 | static __be32 |
1da177e4 LT |
1260 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
1261 | { | |
1262 | int avail; | |
1da177e4 LT |
1263 | int len; |
1264 | DECODE_HEAD; | |
1265 | ||
e31a1b66 BH |
1266 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
1267 | if (status) | |
1268 | return status; | |
1269 | READ_BUF(16); | |
542d1ab3 | 1270 | p = xdr_decode_hyper(p, &write->wr_offset); |
06553991 | 1271 | write->wr_stable_how = be32_to_cpup(p++); |
54bbb7d2 | 1272 | if (write->wr_stable_how > NFS_FILE_SYNC) |
1da177e4 | 1273 | goto xdr_error; |
06553991 | 1274 | write->wr_buflen = be32_to_cpup(p++); |
1da177e4 LT |
1275 | |
1276 | /* Sorry .. no magic macros for this.. * | |
1277 | * READ_BUF(write->wr_buflen); | |
1278 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
1279 | */ | |
1280 | avail = (char*)argp->end - (char*)argp->p; | |
1281 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
1282 | dprintk("NFSD: xdr error (%s:%d)\n", |
1283 | __FILE__, __LINE__); | |
1da177e4 LT |
1284 | goto xdr_error; |
1285 | } | |
70cc7f75 BF |
1286 | write->wr_head.iov_base = p; |
1287 | write->wr_head.iov_len = avail; | |
70cc7f75 | 1288 | write->wr_pagelist = argp->pagelist; |
5a80a54d BF |
1289 | |
1290 | len = XDR_QUADLEN(write->wr_buflen) << 2; | |
1291 | if (len >= avail) { | |
1292 | int pages; | |
1293 | ||
1294 | len -= avail; | |
1295 | ||
1296 | pages = len >> PAGE_SHIFT; | |
1297 | argp->pagelist += pages; | |
1298 | argp->pagelen -= pages * PAGE_SIZE; | |
1299 | len -= pages * PAGE_SIZE; | |
1300 | ||
fc788f64 | 1301 | next_decode_page(argp); |
1da177e4 | 1302 | } |
5a80a54d | 1303 | argp->p += XDR_QUADLEN(len); |
1da177e4 LT |
1304 | |
1305 | DECODE_TAIL; | |
1306 | } | |
1307 | ||
b37ad28b | 1308 | static __be32 |
1da177e4 LT |
1309 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
1310 | { | |
1311 | DECODE_HEAD; | |
1312 | ||
e1a90ebd AS |
1313 | if (argp->minorversion >= 1) |
1314 | return nfserr_notsupp; | |
1315 | ||
1da177e4 LT |
1316 | READ_BUF(12); |
1317 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
06553991 | 1318 | rlockowner->rl_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
1319 | READ_BUF(rlockowner->rl_owner.len); |
1320 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
1321 | ||
60adfc50 AA |
1322 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1323 | return nfserr_inval; | |
1da177e4 LT |
1324 | DECODE_TAIL; |
1325 | } | |
1326 | ||
2db134eb AA |
1327 | static __be32 |
1328 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1329 | struct nfsd4_exchange_id *exid) |
2db134eb | 1330 | { |
5afa040b | 1331 | int dummy, tmp; |
0733d213 AA |
1332 | DECODE_HEAD; |
1333 | ||
1334 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1335 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1336 | ||
a084daf5 BF |
1337 | status = nfsd4_decode_opaque(argp, &exid->clname); |
1338 | if (status) | |
1339 | return nfserr_bad_xdr; | |
0733d213 AA |
1340 | |
1341 | READ_BUF(4); | |
06553991 | 1342 | exid->flags = be32_to_cpup(p++); |
0733d213 AA |
1343 | |
1344 | /* Ignore state_protect4_a */ | |
1345 | READ_BUF(4); | |
06553991 | 1346 | exid->spa_how = be32_to_cpup(p++); |
0733d213 AA |
1347 | switch (exid->spa_how) { |
1348 | case SP4_NONE: | |
1349 | break; | |
1350 | case SP4_MACH_CRED: | |
1351 | /* spo_must_enforce */ | |
ed941643 AE |
1352 | status = nfsd4_decode_bitmap(argp, |
1353 | exid->spo_must_enforce); | |
1354 | if (status) | |
1355 | goto out; | |
0733d213 | 1356 | /* spo_must_allow */ |
ed941643 AE |
1357 | status = nfsd4_decode_bitmap(argp, exid->spo_must_allow); |
1358 | if (status) | |
1359 | goto out; | |
0733d213 AA |
1360 | break; |
1361 | case SP4_SSV: | |
1362 | /* ssp_ops */ | |
1363 | READ_BUF(4); | |
06553991 | 1364 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1365 | READ_BUF(dummy * 4); |
1366 | p += dummy; | |
1367 | ||
1368 | READ_BUF(4); | |
06553991 | 1369 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1370 | READ_BUF(dummy * 4); |
1371 | p += dummy; | |
1372 | ||
1373 | /* ssp_hash_algs<> */ | |
1374 | READ_BUF(4); | |
06553991 | 1375 | tmp = be32_to_cpup(p++); |
5afa040b MJ |
1376 | while (tmp--) { |
1377 | READ_BUF(4); | |
06553991 | 1378 | dummy = be32_to_cpup(p++); |
5afa040b MJ |
1379 | READ_BUF(dummy); |
1380 | p += XDR_QUADLEN(dummy); | |
1381 | } | |
0733d213 AA |
1382 | |
1383 | /* ssp_encr_algs<> */ | |
1384 | READ_BUF(4); | |
06553991 | 1385 | tmp = be32_to_cpup(p++); |
5afa040b MJ |
1386 | while (tmp--) { |
1387 | READ_BUF(4); | |
06553991 | 1388 | dummy = be32_to_cpup(p++); |
5afa040b MJ |
1389 | READ_BUF(dummy); |
1390 | p += XDR_QUADLEN(dummy); | |
1391 | } | |
0733d213 AA |
1392 | |
1393 | /* ssp_window and ssp_num_gss_handles */ | |
1394 | READ_BUF(8); | |
06553991 BF |
1395 | dummy = be32_to_cpup(p++); |
1396 | dummy = be32_to_cpup(p++); | |
0733d213 AA |
1397 | break; |
1398 | default: | |
1399 | goto xdr_error; | |
1400 | } | |
1401 | ||
1402 | /* Ignore Implementation ID */ | |
1403 | READ_BUF(4); /* nfs_impl_id4 array length */ | |
06553991 | 1404 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1405 | |
1406 | if (dummy > 1) | |
1407 | goto xdr_error; | |
1408 | ||
1409 | if (dummy == 1) { | |
1410 | /* nii_domain */ | |
1411 | READ_BUF(4); | |
06553991 | 1412 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1413 | READ_BUF(dummy); |
1414 | p += XDR_QUADLEN(dummy); | |
1415 | ||
1416 | /* nii_name */ | |
1417 | READ_BUF(4); | |
06553991 | 1418 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1419 | READ_BUF(dummy); |
1420 | p += XDR_QUADLEN(dummy); | |
1421 | ||
1422 | /* nii_date */ | |
1423 | READ_BUF(12); | |
1424 | p += 3; | |
1425 | } | |
1426 | DECODE_TAIL; | |
2db134eb AA |
1427 | } |
1428 | ||
1429 | static __be32 | |
1430 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1431 | struct nfsd4_create_session *sess) | |
1432 | { | |
ec6b5d7b | 1433 | DECODE_HEAD; |
ec6b5d7b | 1434 | u32 dummy; |
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); | |
06553991 BF |
1443 | dummy = be32_to_cpup(p++); /* headerpadsz is always 0 */ |
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); | |
06553991 BF |
1460 | dummy = be32_to_cpup(p++); /* headerpadsz is always 0 */ |
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) { | |
1591 | READ_BUF(4 * num); | |
1592 | gdev->gd_notify_types = be32_to_cpup(p++); | |
1593 | for (i = 1; i < num; i++) { | |
1594 | if (be32_to_cpup(p++)) { | |
1595 | status = nfserr_inval; | |
1596 | goto out; | |
1597 | } | |
1598 | } | |
1599 | } | |
1600 | DECODE_TAIL; | |
1601 | } | |
1602 | ||
1603 | static __be32 | |
1604 | nfsd4_decode_layoutget(struct nfsd4_compoundargs *argp, | |
1605 | struct nfsd4_layoutget *lgp) | |
1606 | { | |
1607 | DECODE_HEAD; | |
1608 | ||
1609 | READ_BUF(36); | |
1610 | lgp->lg_signal = be32_to_cpup(p++); | |
1611 | lgp->lg_layout_type = be32_to_cpup(p++); | |
1612 | lgp->lg_seg.iomode = be32_to_cpup(p++); | |
1613 | p = xdr_decode_hyper(p, &lgp->lg_seg.offset); | |
1614 | p = xdr_decode_hyper(p, &lgp->lg_seg.length); | |
1615 | p = xdr_decode_hyper(p, &lgp->lg_minlength); | |
db59c0ef KM |
1616 | |
1617 | status = nfsd4_decode_stateid(argp, &lgp->lg_sid); | |
1618 | if (status) | |
1619 | return status; | |
1620 | ||
9cf514cc CH |
1621 | READ_BUF(4); |
1622 | lgp->lg_maxcount = be32_to_cpup(p++); | |
1623 | ||
1624 | DECODE_TAIL; | |
1625 | } | |
1626 | ||
1627 | static __be32 | |
1628 | nfsd4_decode_layoutcommit(struct nfsd4_compoundargs *argp, | |
1629 | struct nfsd4_layoutcommit *lcp) | |
1630 | { | |
1631 | DECODE_HEAD; | |
1632 | u32 timechange; | |
1633 | ||
1634 | READ_BUF(20); | |
1635 | p = xdr_decode_hyper(p, &lcp->lc_seg.offset); | |
1636 | p = xdr_decode_hyper(p, &lcp->lc_seg.length); | |
1637 | lcp->lc_reclaim = be32_to_cpup(p++); | |
db59c0ef KM |
1638 | |
1639 | status = nfsd4_decode_stateid(argp, &lcp->lc_sid); | |
1640 | if (status) | |
1641 | return status; | |
1642 | ||
9cf514cc CH |
1643 | READ_BUF(4); |
1644 | lcp->lc_newoffset = be32_to_cpup(p++); | |
1645 | if (lcp->lc_newoffset) { | |
1646 | READ_BUF(8); | |
1647 | p = xdr_decode_hyper(p, &lcp->lc_last_wr); | |
1648 | } else | |
1649 | lcp->lc_last_wr = 0; | |
1650 | READ_BUF(4); | |
1651 | timechange = be32_to_cpup(p++); | |
1652 | if (timechange) { | |
1653 | status = nfsd4_decode_time(argp, &lcp->lc_mtime); | |
1654 | if (status) | |
1655 | return status; | |
1656 | } else { | |
1657 | lcp->lc_mtime.tv_nsec = UTIME_NOW; | |
1658 | } | |
1659 | READ_BUF(8); | |
1660 | lcp->lc_layout_type = be32_to_cpup(p++); | |
1661 | ||
1662 | /* | |
1663 | * Save the layout update in XDR format and let the layout driver deal | |
1664 | * with it later. | |
1665 | */ | |
1666 | lcp->lc_up_len = be32_to_cpup(p++); | |
1667 | if (lcp->lc_up_len > 0) { | |
1668 | READ_BUF(lcp->lc_up_len); | |
1669 | READMEM(lcp->lc_up_layout, lcp->lc_up_len); | |
1670 | } | |
1671 | ||
1672 | DECODE_TAIL; | |
1673 | } | |
1674 | ||
1675 | static __be32 | |
1676 | nfsd4_decode_layoutreturn(struct nfsd4_compoundargs *argp, | |
1677 | struct nfsd4_layoutreturn *lrp) | |
1678 | { | |
1679 | DECODE_HEAD; | |
1680 | ||
1681 | READ_BUF(16); | |
1682 | lrp->lr_reclaim = be32_to_cpup(p++); | |
1683 | lrp->lr_layout_type = be32_to_cpup(p++); | |
1684 | lrp->lr_seg.iomode = be32_to_cpup(p++); | |
1685 | lrp->lr_return_type = be32_to_cpup(p++); | |
1686 | if (lrp->lr_return_type == RETURN_FILE) { | |
1687 | READ_BUF(16); | |
1688 | p = xdr_decode_hyper(p, &lrp->lr_seg.offset); | |
1689 | p = xdr_decode_hyper(p, &lrp->lr_seg.length); | |
db59c0ef KM |
1690 | |
1691 | status = nfsd4_decode_stateid(argp, &lrp->lr_sid); | |
1692 | if (status) | |
1693 | return status; | |
1694 | ||
9cf514cc CH |
1695 | READ_BUF(4); |
1696 | lrp->lrf_body_len = be32_to_cpup(p++); | |
1697 | if (lrp->lrf_body_len > 0) { | |
1698 | READ_BUF(lrp->lrf_body_len); | |
1699 | READMEM(lrp->lrf_body, lrp->lrf_body_len); | |
1700 | } | |
1701 | } else { | |
1702 | lrp->lr_seg.offset = 0; | |
1703 | lrp->lr_seg.length = NFS4_MAX_UINT64; | |
1704 | } | |
1705 | ||
1706 | DECODE_TAIL; | |
1707 | } | |
1708 | #endif /* CONFIG_NFSD_PNFS */ | |
1709 | ||
95d871f0 AS |
1710 | static __be32 |
1711 | nfsd4_decode_fallocate(struct nfsd4_compoundargs *argp, | |
1712 | struct nfsd4_fallocate *fallocate) | |
1713 | { | |
1714 | DECODE_HEAD; | |
1715 | ||
1716 | status = nfsd4_decode_stateid(argp, &fallocate->falloc_stateid); | |
1717 | if (status) | |
1718 | return status; | |
1719 | ||
1720 | READ_BUF(16); | |
1721 | p = xdr_decode_hyper(p, &fallocate->falloc_offset); | |
1722 | xdr_decode_hyper(p, &fallocate->falloc_length); | |
1723 | ||
1724 | DECODE_TAIL; | |
1725 | } | |
1726 | ||
ffa0160a CH |
1727 | static __be32 |
1728 | nfsd4_decode_clone(struct nfsd4_compoundargs *argp, struct nfsd4_clone *clone) | |
1729 | { | |
1730 | DECODE_HEAD; | |
1731 | ||
1732 | status = nfsd4_decode_stateid(argp, &clone->cl_src_stateid); | |
1733 | if (status) | |
1734 | return status; | |
1735 | status = nfsd4_decode_stateid(argp, &clone->cl_dst_stateid); | |
1736 | if (status) | |
1737 | return status; | |
1738 | ||
1739 | READ_BUF(8 + 8 + 8); | |
1740 | p = xdr_decode_hyper(p, &clone->cl_src_pos); | |
1741 | p = xdr_decode_hyper(p, &clone->cl_dst_pos); | |
1742 | p = xdr_decode_hyper(p, &clone->cl_count); | |
1743 | DECODE_TAIL; | |
1744 | } | |
1745 | ||
29ae7f9d AS |
1746 | static __be32 |
1747 | nfsd4_decode_copy(struct nfsd4_compoundargs *argp, struct nfsd4_copy *copy) | |
1748 | { | |
1749 | DECODE_HEAD; | |
1750 | unsigned int tmp; | |
1751 | ||
1752 | status = nfsd4_decode_stateid(argp, ©->cp_src_stateid); | |
1753 | if (status) | |
1754 | return status; | |
1755 | status = nfsd4_decode_stateid(argp, ©->cp_dst_stateid); | |
1756 | if (status) | |
1757 | return status; | |
1758 | ||
1759 | READ_BUF(8 + 8 + 8 + 4 + 4 + 4); | |
1760 | p = xdr_decode_hyper(p, ©->cp_src_pos); | |
1761 | p = xdr_decode_hyper(p, ©->cp_dst_pos); | |
1762 | p = xdr_decode_hyper(p, ©->cp_count); | |
1763 | copy->cp_consecutive = be32_to_cpup(p++); | |
1764 | copy->cp_synchronous = be32_to_cpup(p++); | |
1765 | tmp = be32_to_cpup(p); /* Source server list not supported */ | |
1766 | ||
1767 | DECODE_TAIL; | |
1768 | } | |
1769 | ||
24bab491 AS |
1770 | static __be32 |
1771 | nfsd4_decode_seek(struct nfsd4_compoundargs *argp, struct nfsd4_seek *seek) | |
1772 | { | |
1773 | DECODE_HEAD; | |
1774 | ||
1775 | status = nfsd4_decode_stateid(argp, &seek->seek_stateid); | |
1776 | if (status) | |
1777 | return status; | |
1778 | ||
1779 | READ_BUF(8 + 4); | |
1780 | p = xdr_decode_hyper(p, &seek->seek_offset); | |
1781 | seek->seek_whence = be32_to_cpup(p); | |
1782 | ||
1783 | DECODE_TAIL; | |
1784 | } | |
1785 | ||
347e0ad9 BH |
1786 | static __be32 |
1787 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1788 | { | |
1789 | return nfs_ok; | |
1790 | } | |
1791 | ||
3c375c6f BH |
1792 | static __be32 |
1793 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1794 | { | |
1e685ec2 | 1795 | return nfserr_notsupp; |
3c375c6f BH |
1796 | } |
1797 | ||
347e0ad9 BH |
1798 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1799 | ||
c1df609d | 1800 | static const nfsd4_dec nfsd4_dec_ops[] = { |
ad1060c8 BF |
1801 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1802 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1803 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1804 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1805 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1806 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1807 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1808 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1809 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1810 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1811 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1812 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1813 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1814 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1815 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1816 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1817 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1818 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1819 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1820 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
e1a90ebd | 1821 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_putpubfh, |
ad1060c8 BF |
1822 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1823 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1824 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1825 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1826 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1827 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1828 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1829 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1830 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1831 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1832 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1833 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1834 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1835 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1836 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1837 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
2db134eb AA |
1838 | |
1839 | /* new operations for NFSv4.1 */ | |
cb73a9f4 | 1840 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_backchannel_ctl, |
1d1bc8f2 | 1841 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
9064caae RD |
1842 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
1843 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
1844 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
e1ca12df | 1845 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, |
9064caae | 1846 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
9cf514cc CH |
1847 | #ifdef CONFIG_NFSD_PNFS |
1848 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_getdeviceinfo, | |
1849 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1850 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_layoutcommit, | |
1851 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_layoutget, | |
1852 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_layoutreturn, | |
1853 | #else | |
9064caae RD |
1854 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, |
1855 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1856 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1857 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1858 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
9cf514cc | 1859 | #endif |
04f4ad16 | 1860 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
9064caae RD |
1861 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
1862 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
17456804 | 1863 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid, |
9064caae | 1864 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
345c2842 | 1865 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, |
4dc6ec00 | 1866 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
87a15a80 AS |
1867 | |
1868 | /* new operations for NFSv4.2 */ | |
95d871f0 | 1869 | [OP_ALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate, |
29ae7f9d | 1870 | [OP_COPY] = (nfsd4_dec)nfsd4_decode_copy, |
87a15a80 | 1871 | [OP_COPY_NOTIFY] = (nfsd4_dec)nfsd4_decode_notsupp, |
b0cb9085 | 1872 | [OP_DEALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate, |
87a15a80 AS |
1873 | [OP_IO_ADVISE] = (nfsd4_dec)nfsd4_decode_notsupp, |
1874 | [OP_LAYOUTERROR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1875 | [OP_LAYOUTSTATS] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1876 | [OP_OFFLOAD_CANCEL] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1877 | [OP_OFFLOAD_STATUS] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1878 | [OP_READ_PLUS] = (nfsd4_dec)nfsd4_decode_notsupp, | |
24bab491 | 1879 | [OP_SEEK] = (nfsd4_dec)nfsd4_decode_seek, |
87a15a80 | 1880 | [OP_WRITE_SAME] = (nfsd4_dec)nfsd4_decode_notsupp, |
ffa0160a | 1881 | [OP_CLONE] = (nfsd4_dec)nfsd4_decode_clone, |
2db134eb AA |
1882 | }; |
1883 | ||
e1a90ebd AS |
1884 | static inline bool |
1885 | nfsd4_opnum_in_range(struct nfsd4_compoundargs *argp, struct nfsd4_op *op) | |
1886 | { | |
8217d146 | 1887 | if (op->opnum < FIRST_NFS4_OP) |
e1a90ebd | 1888 | return false; |
8217d146 | 1889 | else if (argp->minorversion == 0 && op->opnum > LAST_NFS40_OP) |
e1a90ebd | 1890 | return false; |
8217d146 AS |
1891 | else if (argp->minorversion == 1 && op->opnum > LAST_NFS41_OP) |
1892 | return false; | |
1893 | else if (argp->minorversion == 2 && op->opnum > LAST_NFS42_OP) | |
e1a90ebd AS |
1894 | return false; |
1895 | return true; | |
1896 | } | |
f2feb96b | 1897 | |
b37ad28b | 1898 | static __be32 |
1da177e4 LT |
1899 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1900 | { | |
1901 | DECODE_HEAD; | |
1902 | struct nfsd4_op *op; | |
1091006c | 1903 | bool cachethis = false; |
a5cddc88 BF |
1904 | int auth_slack= argp->rqstp->rq_auth_slack; |
1905 | int max_reply = auth_slack + 8; /* opcnt, status */ | |
b0e35fda BF |
1906 | int readcount = 0; |
1907 | int readbytes = 0; | |
1da177e4 LT |
1908 | int i; |
1909 | ||
1da177e4 | 1910 | READ_BUF(4); |
06553991 | 1911 | argp->taglen = be32_to_cpup(p++); |
4aed9c46 | 1912 | READ_BUF(argp->taglen); |
1da177e4 | 1913 | SAVEMEM(argp->tag, argp->taglen); |
4aed9c46 | 1914 | READ_BUF(8); |
06553991 BF |
1915 | argp->minorversion = be32_to_cpup(p++); |
1916 | argp->opcnt = be32_to_cpup(p++); | |
4f0cefbf | 1917 | max_reply += 4 + (XDR_QUADLEN(argp->taglen) << 2); |
1da177e4 LT |
1918 | |
1919 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1920 | goto xdr_error; | |
0078117c BF |
1921 | /* |
1922 | * NFS4ERR_RESOURCE is a more helpful error than GARBAGE_ARGS | |
1923 | * here, so we return success at the xdr level so that | |
1924 | * nfsd4_proc can handle this is an NFS-level error. | |
1925 | */ | |
1926 | if (argp->opcnt > NFSD_MAX_OPS_PER_COMPOUND) | |
1927 | return 0; | |
1da177e4 | 1928 | |
e8c96f8c | 1929 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
5d6031ca | 1930 | argp->ops = kzalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1da177e4 LT |
1931 | if (!argp->ops) { |
1932 | argp->ops = argp->iops; | |
817cb9d4 | 1933 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1934 | goto xdr_error; |
1935 | } | |
1936 | } | |
1937 | ||
e1a90ebd | 1938 | if (argp->minorversion > NFSD_SUPPORTED_MINOR_VERSION) |
30cff1ff BH |
1939 | argp->opcnt = 0; |
1940 | ||
1da177e4 LT |
1941 | for (i = 0; i < argp->opcnt; i++) { |
1942 | op = &argp->ops[i]; | |
1943 | op->replay = NULL; | |
1944 | ||
8a61b18c | 1945 | READ_BUF(4); |
06553991 | 1946 | op->opnum = be32_to_cpup(p++); |
1da177e4 | 1947 | |
e1a90ebd AS |
1948 | if (nfsd4_opnum_in_range(argp, op)) |
1949 | op->status = nfsd4_dec_ops[op->opnum](argp, &op->u); | |
347e0ad9 | 1950 | else { |
1da177e4 LT |
1951 | op->opnum = OP_ILLEGAL; |
1952 | op->status = nfserr_op_illegal; | |
1da177e4 | 1953 | } |
f4f9ef4a | 1954 | op->opdesc = OPDESC(op); |
1091006c BF |
1955 | /* |
1956 | * We'll try to cache the result in the DRC if any one | |
1957 | * op in the compound wants to be cached: | |
1958 | */ | |
1959 | cachethis |= nfsd4_cache_this_op(op); | |
6ff40dec | 1960 | |
b0e35fda BF |
1961 | if (op->opnum == OP_READ) { |
1962 | readcount++; | |
1963 | readbytes += nfsd4_max_reply(argp->rqstp, op); | |
1964 | } else | |
1965 | max_reply += nfsd4_max_reply(argp->rqstp, op); | |
f7b43d0c | 1966 | /* |
7323f0d2 KM |
1967 | * OP_LOCK and OP_LOCKT may return a conflicting lock. |
1968 | * (Special case because it will just skip encoding this | |
1969 | * if it runs out of xdr buffer space, and it is the only | |
1970 | * operation that behaves this way.) | |
f7b43d0c | 1971 | */ |
7323f0d2 | 1972 | if (op->opnum == OP_LOCK || op->opnum == OP_LOCKT) |
f7b43d0c | 1973 | max_reply += NFS4_OPAQUE_LIMIT; |
e372ba60 BF |
1974 | |
1975 | if (op->status) { | |
1976 | argp->opcnt = i+1; | |
1977 | break; | |
1978 | } | |
1da177e4 | 1979 | } |
1091006c BF |
1980 | /* Sessions make the DRC unnecessary: */ |
1981 | if (argp->minorversion) | |
1982 | cachethis = false; | |
b0e35fda | 1983 | svc_reserve(argp->rqstp, max_reply + readbytes); |
1091006c | 1984 | argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; |
1da177e4 | 1985 | |
a5cddc88 | 1986 | if (readcount > 1 || max_reply > PAGE_SIZE - auth_slack) |
779fb0f3 | 1987 | clear_bit(RQ_SPLICE_OK, &argp->rqstp->rq_flags); |
b0e35fda | 1988 | |
1da177e4 LT |
1989 | DECODE_TAIL; |
1990 | } | |
1da177e4 | 1991 | |
b8800921 N |
1992 | static __be32 *encode_change(__be32 *p, struct kstat *stat, struct inode *inode, |
1993 | struct svc_export *exp) | |
c654b8a9 | 1994 | { |
b8800921 N |
1995 | if (exp->ex_flags & NFSEXP_V4ROOT) { |
1996 | *p++ = cpu_to_be32(convert_to_wallclock(exp->cd->flush_time)); | |
1997 | *p++ = 0; | |
1998 | } else if (IS_I_VERSION(inode)) { | |
39ca1bf6 | 1999 | p = xdr_encode_hyper(p, nfsd4_change_attribute(stat, inode)); |
c654b8a9 | 2000 | } else { |
d05d5744 BF |
2001 | *p++ = cpu_to_be32(stat->ctime.tv_sec); |
2002 | *p++ = cpu_to_be32(stat->ctime.tv_nsec); | |
c654b8a9 | 2003 | } |
d05d5744 | 2004 | return p; |
c654b8a9 BF |
2005 | } |
2006 | ||
d05d5744 | 2007 | static __be32 *encode_cinfo(__be32 *p, struct nfsd4_change_info *c) |
c654b8a9 | 2008 | { |
d05d5744 | 2009 | *p++ = cpu_to_be32(c->atomic); |
c654b8a9 | 2010 | if (c->change_supported) { |
d05d5744 BF |
2011 | p = xdr_encode_hyper(p, c->before_change); |
2012 | p = xdr_encode_hyper(p, c->after_change); | |
c654b8a9 | 2013 | } else { |
d05d5744 BF |
2014 | *p++ = cpu_to_be32(c->before_ctime_sec); |
2015 | *p++ = cpu_to_be32(c->before_ctime_nsec); | |
2016 | *p++ = cpu_to_be32(c->after_ctime_sec); | |
2017 | *p++ = cpu_to_be32(c->after_ctime_nsec); | |
c654b8a9 | 2018 | } |
d05d5744 | 2019 | return p; |
c654b8a9 | 2020 | } |
1da177e4 | 2021 | |
81c3f413 | 2022 | /* Encode as an array of strings the string given with components |
e7a0444a | 2023 | * separated @sep, escaped with esc_enter and esc_exit. |
81c3f413 | 2024 | */ |
ddd1ea56 BF |
2025 | static __be32 nfsd4_encode_components_esc(struct xdr_stream *xdr, char sep, |
2026 | char *components, char esc_enter, | |
2027 | char esc_exit) | |
81c3f413 | 2028 | { |
ddd1ea56 | 2029 | __be32 *p; |
082d4bd7 BF |
2030 | __be32 pathlen; |
2031 | int pathlen_offset; | |
81c3f413 | 2032 | int strlen, count=0; |
e7a0444a | 2033 | char *str, *end, *next; |
81c3f413 BF |
2034 | |
2035 | dprintk("nfsd4_encode_components(%s)\n", components); | |
082d4bd7 BF |
2036 | |
2037 | pathlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
2038 | p = xdr_reserve_space(xdr, 4); |
2039 | if (!p) | |
81c3f413 | 2040 | return nfserr_resource; |
082d4bd7 BF |
2041 | p++; /* We will fill this in with @count later */ |
2042 | ||
81c3f413 BF |
2043 | end = str = components; |
2044 | while (*end) { | |
e7a0444a WAA |
2045 | bool found_esc = false; |
2046 | ||
2047 | /* try to parse as esc_start, ..., esc_end, sep */ | |
2048 | if (*str == esc_enter) { | |
2049 | for (; *end && (*end != esc_exit); end++) | |
2050 | /* find esc_exit or end of string */; | |
2051 | next = end + 1; | |
2052 | if (*end && (!*next || *next == sep)) { | |
2053 | str++; | |
2054 | found_esc = true; | |
2055 | } | |
2056 | } | |
2057 | ||
2058 | if (!found_esc) | |
2059 | for (; *end && (*end != sep); end++) | |
2060 | /* find sep or end of string */; | |
2061 | ||
81c3f413 BF |
2062 | strlen = end - str; |
2063 | if (strlen) { | |
ddd1ea56 BF |
2064 | p = xdr_reserve_space(xdr, strlen + 4); |
2065 | if (!p) | |
81c3f413 | 2066 | return nfserr_resource; |
0c0c267b | 2067 | p = xdr_encode_opaque(p, str, strlen); |
81c3f413 BF |
2068 | count++; |
2069 | } | |
2070 | else | |
2071 | end++; | |
5a64e569 BC |
2072 | if (found_esc) |
2073 | end = next; | |
2074 | ||
81c3f413 BF |
2075 | str = end; |
2076 | } | |
bf7491f1 | 2077 | pathlen = htonl(count); |
082d4bd7 | 2078 | write_bytes_to_xdr_buf(xdr->buf, pathlen_offset, &pathlen, 4); |
81c3f413 BF |
2079 | return 0; |
2080 | } | |
2081 | ||
e7a0444a WAA |
2082 | /* Encode as an array of strings the string given with components |
2083 | * separated @sep. | |
2084 | */ | |
ddd1ea56 BF |
2085 | static __be32 nfsd4_encode_components(struct xdr_stream *xdr, char sep, |
2086 | char *components) | |
e7a0444a | 2087 | { |
ddd1ea56 | 2088 | return nfsd4_encode_components_esc(xdr, sep, components, 0, 0); |
e7a0444a WAA |
2089 | } |
2090 | ||
81c3f413 BF |
2091 | /* |
2092 | * encode a location element of a fs_locations structure | |
2093 | */ | |
ddd1ea56 BF |
2094 | static __be32 nfsd4_encode_fs_location4(struct xdr_stream *xdr, |
2095 | struct nfsd4_fs_location *location) | |
81c3f413 | 2096 | { |
b37ad28b | 2097 | __be32 status; |
81c3f413 | 2098 | |
ddd1ea56 | 2099 | status = nfsd4_encode_components_esc(xdr, ':', location->hosts, |
e7a0444a | 2100 | '[', ']'); |
81c3f413 BF |
2101 | if (status) |
2102 | return status; | |
ddd1ea56 | 2103 | status = nfsd4_encode_components(xdr, '/', location->path); |
81c3f413 BF |
2104 | if (status) |
2105 | return status; | |
81c3f413 BF |
2106 | return 0; |
2107 | } | |
2108 | ||
2109 | /* | |
ed748aac | 2110 | * Encode a path in RFC3530 'pathname4' format |
81c3f413 | 2111 | */ |
ddd1ea56 BF |
2112 | static __be32 nfsd4_encode_path(struct xdr_stream *xdr, |
2113 | const struct path *root, | |
2114 | const struct path *path) | |
81c3f413 | 2115 | { |
301f0268 | 2116 | struct path cur = *path; |
ddd1ea56 | 2117 | __be32 *p; |
ed748aac TM |
2118 | struct dentry **components = NULL; |
2119 | unsigned int ncomponents = 0; | |
2120 | __be32 err = nfserr_jukebox; | |
81c3f413 | 2121 | |
ed748aac | 2122 | dprintk("nfsd4_encode_components("); |
81c3f413 | 2123 | |
ed748aac TM |
2124 | path_get(&cur); |
2125 | /* First walk the path up to the nfsd root, and store the | |
2126 | * dentries/path components in an array. | |
2127 | */ | |
2128 | for (;;) { | |
b77a4b2e | 2129 | if (path_equal(&cur, root)) |
ed748aac TM |
2130 | break; |
2131 | if (cur.dentry == cur.mnt->mnt_root) { | |
2132 | if (follow_up(&cur)) | |
2133 | continue; | |
2134 | goto out_free; | |
2135 | } | |
2136 | if ((ncomponents & 15) == 0) { | |
2137 | struct dentry **new; | |
2138 | new = krealloc(components, | |
2139 | sizeof(*new) * (ncomponents + 16), | |
2140 | GFP_KERNEL); | |
2141 | if (!new) | |
2142 | goto out_free; | |
2143 | components = new; | |
2144 | } | |
2145 | components[ncomponents++] = cur.dentry; | |
2146 | cur.dentry = dget_parent(cur.dentry); | |
2147 | } | |
ddd1ea56 BF |
2148 | err = nfserr_resource; |
2149 | p = xdr_reserve_space(xdr, 4); | |
2150 | if (!p) | |
ed748aac | 2151 | goto out_free; |
c373b0a4 | 2152 | *p++ = cpu_to_be32(ncomponents); |
ed748aac TM |
2153 | |
2154 | while (ncomponents) { | |
2155 | struct dentry *dentry = components[ncomponents - 1]; | |
301f0268 | 2156 | unsigned int len; |
ed748aac | 2157 | |
301f0268 AV |
2158 | spin_lock(&dentry->d_lock); |
2159 | len = dentry->d_name.len; | |
ddd1ea56 BF |
2160 | p = xdr_reserve_space(xdr, len + 4); |
2161 | if (!p) { | |
301f0268 | 2162 | spin_unlock(&dentry->d_lock); |
ed748aac | 2163 | goto out_free; |
301f0268 | 2164 | } |
0c0c267b | 2165 | p = xdr_encode_opaque(p, dentry->d_name.name, len); |
a455589f | 2166 | dprintk("/%pd", dentry); |
301f0268 | 2167 | spin_unlock(&dentry->d_lock); |
ed748aac TM |
2168 | dput(dentry); |
2169 | ncomponents--; | |
81c3f413 | 2170 | } |
ed748aac | 2171 | |
ed748aac TM |
2172 | err = 0; |
2173 | out_free: | |
2174 | dprintk(")\n"); | |
2175 | while (ncomponents) | |
2176 | dput(components[--ncomponents]); | |
2177 | kfree(components); | |
2178 | path_put(&cur); | |
2179 | return err; | |
2180 | } | |
2181 | ||
ddd1ea56 BF |
2182 | static __be32 nfsd4_encode_fsloc_fsroot(struct xdr_stream *xdr, |
2183 | struct svc_rqst *rqstp, const struct path *path) | |
ed748aac TM |
2184 | { |
2185 | struct svc_export *exp_ps; | |
2186 | __be32 res; | |
2187 | ||
2188 | exp_ps = rqst_find_fsidzero_export(rqstp); | |
2189 | if (IS_ERR(exp_ps)) | |
2190 | return nfserrno(PTR_ERR(exp_ps)); | |
ddd1ea56 | 2191 | res = nfsd4_encode_path(xdr, &exp_ps->ex_path, path); |
ed748aac TM |
2192 | exp_put(exp_ps); |
2193 | return res; | |
81c3f413 BF |
2194 | } |
2195 | ||
2196 | /* | |
2197 | * encode a fs_locations structure | |
2198 | */ | |
ddd1ea56 BF |
2199 | static __be32 nfsd4_encode_fs_locations(struct xdr_stream *xdr, |
2200 | struct svc_rqst *rqstp, struct svc_export *exp) | |
81c3f413 | 2201 | { |
b37ad28b | 2202 | __be32 status; |
cc45f017 | 2203 | int i; |
ddd1ea56 | 2204 | __be32 *p; |
81c3f413 | 2205 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
81c3f413 | 2206 | |
ddd1ea56 | 2207 | status = nfsd4_encode_fsloc_fsroot(xdr, rqstp, &exp->ex_path); |
81c3f413 BF |
2208 | if (status) |
2209 | return status; | |
ddd1ea56 BF |
2210 | p = xdr_reserve_space(xdr, 4); |
2211 | if (!p) | |
81c3f413 | 2212 | return nfserr_resource; |
c373b0a4 | 2213 | *p++ = cpu_to_be32(fslocs->locations_count); |
81c3f413 | 2214 | for (i=0; i<fslocs->locations_count; i++) { |
ddd1ea56 | 2215 | status = nfsd4_encode_fs_location4(xdr, &fslocs->locations[i]); |
81c3f413 BF |
2216 | if (status) |
2217 | return status; | |
2218 | } | |
81c3f413 BF |
2219 | return 0; |
2220 | } | |
1da177e4 | 2221 | |
3d2544b1 BF |
2222 | static u32 nfs4_file_type(umode_t mode) |
2223 | { | |
2224 | switch (mode & S_IFMT) { | |
2225 | case S_IFIFO: return NF4FIFO; | |
2226 | case S_IFCHR: return NF4CHR; | |
2227 | case S_IFDIR: return NF4DIR; | |
2228 | case S_IFBLK: return NF4BLK; | |
2229 | case S_IFLNK: return NF4LNK; | |
2230 | case S_IFREG: return NF4REG; | |
2231 | case S_IFSOCK: return NF4SOCK; | |
2232 | default: return NF4BAD; | |
2233 | }; | |
2234 | } | |
1da177e4 | 2235 | |
b37ad28b | 2236 | static inline __be32 |
ddd1ea56 BF |
2237 | nfsd4_encode_aclname(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2238 | struct nfs4_ace *ace) | |
1da177e4 | 2239 | { |
3554116d | 2240 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ddd1ea56 | 2241 | return nfs4_acl_write_who(xdr, ace->whotype); |
3554116d | 2242 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
ddd1ea56 | 2243 | return nfsd4_encode_group(xdr, rqstp, ace->who_gid); |
3554116d | 2244 | else |
ddd1ea56 | 2245 | return nfsd4_encode_user(xdr, rqstp, ace->who_uid); |
1da177e4 LT |
2246 | } |
2247 | ||
6896f15a | 2248 | static inline __be32 |
8a4c3926 | 2249 | nfsd4_encode_layout_types(struct xdr_stream *xdr, u32 layout_types) |
6896f15a | 2250 | { |
8a4c3926 JL |
2251 | __be32 *p; |
2252 | unsigned long i = hweight_long(layout_types); | |
6896f15a | 2253 | |
8a4c3926 JL |
2254 | p = xdr_reserve_space(xdr, 4 + 4 * i); |
2255 | if (!p) | |
2256 | return nfserr_resource; | |
2257 | ||
2258 | *p++ = cpu_to_be32(i); | |
2259 | ||
2260 | for (i = LAYOUT_NFSV4_1_FILES; i < LAYOUT_TYPE_MAX; ++i) | |
2261 | if (layout_types & (1 << i)) | |
2262 | *p++ = cpu_to_be32(i); | |
6896f15a KM |
2263 | |
2264 | return 0; | |
2265 | } | |
2266 | ||
42ca0993 BF |
2267 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
2268 | FATTR4_WORD0_RDATTR_ERROR) | |
2269 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
c2227a39 | 2270 | #define WORD2_ABSENT_FS_ATTRS 0 |
42ca0993 | 2271 | |
18032ca0 DQ |
2272 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
2273 | static inline __be32 | |
ddd1ea56 BF |
2274 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2275 | void *context, int len) | |
18032ca0 | 2276 | { |
ddd1ea56 | 2277 | __be32 *p; |
18032ca0 | 2278 | |
ddd1ea56 BF |
2279 | p = xdr_reserve_space(xdr, len + 4 + 4 + 4); |
2280 | if (!p) | |
18032ca0 DQ |
2281 | return nfserr_resource; |
2282 | ||
2283 | /* | |
2284 | * For now we use a 0 here to indicate the null translation; in | |
2285 | * the future we may place a call to translation code here. | |
2286 | */ | |
c373b0a4 BF |
2287 | *p++ = cpu_to_be32(0); /* lfs */ |
2288 | *p++ = cpu_to_be32(0); /* pi */ | |
18032ca0 | 2289 | p = xdr_encode_opaque(p, context, len); |
18032ca0 DQ |
2290 | return 0; |
2291 | } | |
2292 | #else | |
2293 | static inline __be32 | |
ddd1ea56 BF |
2294 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2295 | void *context, int len) | |
18032ca0 DQ |
2296 | { return 0; } |
2297 | #endif | |
2298 | ||
c2227a39 | 2299 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *bmval2, u32 *rdattr_err) |
42ca0993 BF |
2300 | { |
2301 | /* As per referral draft: */ | |
2302 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
2303 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
2304 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
2305 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
2306 | *rdattr_err = NFSERR_MOVED; | |
2307 | else | |
2308 | return nfserr_moved; | |
2309 | } | |
2310 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
2311 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
c2227a39 | 2312 | *bmval2 &= WORD2_ABSENT_FS_ATTRS; |
42ca0993 BF |
2313 | return 0; |
2314 | } | |
1da177e4 | 2315 | |
ae7095a7 BF |
2316 | |
2317 | static int get_parent_attributes(struct svc_export *exp, struct kstat *stat) | |
2318 | { | |
2319 | struct path path = exp->ex_path; | |
2320 | int err; | |
2321 | ||
2322 | path_get(&path); | |
2323 | while (follow_up(&path)) { | |
2324 | if (path.dentry != path.mnt->mnt_root) | |
2325 | break; | |
2326 | } | |
a528d35e | 2327 | err = vfs_getattr(&path, stat, STATX_BASIC_STATS, AT_STATX_SYNC_AS_STAT); |
ae7095a7 BF |
2328 | path_put(&path); |
2329 | return err; | |
2330 | } | |
2331 | ||
75976de6 KM |
2332 | static __be32 |
2333 | nfsd4_encode_bitmap(struct xdr_stream *xdr, u32 bmval0, u32 bmval1, u32 bmval2) | |
2334 | { | |
2335 | __be32 *p; | |
2336 | ||
2337 | if (bmval2) { | |
2338 | p = xdr_reserve_space(xdr, 16); | |
2339 | if (!p) | |
2340 | goto out_resource; | |
2341 | *p++ = cpu_to_be32(3); | |
2342 | *p++ = cpu_to_be32(bmval0); | |
2343 | *p++ = cpu_to_be32(bmval1); | |
2344 | *p++ = cpu_to_be32(bmval2); | |
2345 | } else if (bmval1) { | |
2346 | p = xdr_reserve_space(xdr, 12); | |
2347 | if (!p) | |
2348 | goto out_resource; | |
2349 | *p++ = cpu_to_be32(2); | |
2350 | *p++ = cpu_to_be32(bmval0); | |
2351 | *p++ = cpu_to_be32(bmval1); | |
2352 | } else { | |
2353 | p = xdr_reserve_space(xdr, 8); | |
2354 | if (!p) | |
2355 | goto out_resource; | |
2356 | *p++ = cpu_to_be32(1); | |
2357 | *p++ = cpu_to_be32(bmval0); | |
2358 | } | |
2359 | ||
2360 | return 0; | |
2361 | out_resource: | |
2362 | return nfserr_resource; | |
2363 | } | |
2364 | ||
1da177e4 LT |
2365 | /* |
2366 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
2367 | * ourselves. | |
1da177e4 | 2368 | */ |
da2ebce6 | 2369 | static __be32 |
d5184658 BF |
2370 | nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp, |
2371 | struct svc_export *exp, | |
2372 | struct dentry *dentry, u32 *bmval, | |
406a7ea9 | 2373 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
2374 | { |
2375 | u32 bmval0 = bmval[0]; | |
2376 | u32 bmval1 = bmval[1]; | |
7e705706 | 2377 | u32 bmval2 = bmval[2]; |
1da177e4 | 2378 | struct kstat stat; |
d50e6136 | 2379 | struct svc_fh *tempfh = NULL; |
1da177e4 | 2380 | struct kstatfs statfs; |
ddd1ea56 | 2381 | __be32 *p; |
1fcea5b2 | 2382 | int starting_len = xdr->buf->len; |
082d4bd7 BF |
2383 | int attrlen_offset; |
2384 | __be32 attrlen; | |
1da177e4 LT |
2385 | u32 dummy; |
2386 | u64 dummy64; | |
42ca0993 | 2387 | u32 rdattr_err = 0; |
b37ad28b | 2388 | __be32 status; |
b8dd7b9a | 2389 | int err; |
1da177e4 | 2390 | struct nfs4_acl *acl = NULL; |
18032ca0 DQ |
2391 | void *context = NULL; |
2392 | int contextlen; | |
2393 | bool contextsupport = false; | |
7e705706 AA |
2394 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
2395 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
2396 | struct path path = { |
2397 | .mnt = exp->ex_path.mnt, | |
2398 | .dentry = dentry, | |
2399 | }; | |
3d733711 | 2400 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
1da177e4 LT |
2401 | |
2402 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
916d2d84 | 2403 | BUG_ON(!nfsd_attrs_supported(minorversion, bmval)); |
1da177e4 | 2404 | |
42ca0993 | 2405 | if (exp->ex_fslocs.migrated) { |
c2227a39 | 2406 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &bmval2, &rdattr_err); |
42ca0993 BF |
2407 | if (status) |
2408 | goto out; | |
2409 | } | |
2410 | ||
a528d35e | 2411 | err = vfs_getattr(&path, &stat, STATX_BASIC_STATS, AT_STATX_SYNC_AS_STAT); |
b8dd7b9a | 2412 | if (err) |
1da177e4 | 2413 | goto out_nfserr; |
12337901 CH |
2414 | if ((bmval0 & (FATTR4_WORD0_FILES_AVAIL | FATTR4_WORD0_FILES_FREE | |
2415 | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
2416 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
2417 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 2418 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 2419 | if (err) |
1da177e4 LT |
2420 | goto out_nfserr; |
2421 | } | |
2422 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
d50e6136 BF |
2423 | tempfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); |
2424 | status = nfserr_jukebox; | |
2425 | if (!tempfh) | |
2426 | goto out; | |
2427 | fh_init(tempfh, NFS4_FHSIZE); | |
2428 | status = fh_compose(tempfh, exp, dentry, NULL); | |
1da177e4 LT |
2429 | if (status) |
2430 | goto out; | |
d50e6136 | 2431 | fhp = tempfh; |
1da177e4 | 2432 | } |
0c9d65e7 | 2433 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 2434 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
0c9d65e7 AG |
2435 | if (err == -EOPNOTSUPP) |
2436 | bmval0 &= ~FATTR4_WORD0_ACL; | |
2437 | else if (err == -EINVAL) { | |
2438 | status = nfserr_attrnotsupp; | |
2439 | goto out; | |
2440 | } else if (err != 0) | |
2441 | goto out_nfserr; | |
1da177e4 | 2442 | } |
1da177e4 | 2443 | |
18032ca0 | 2444 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
c2227a39 KM |
2445 | if ((bmval2 & FATTR4_WORD2_SECURITY_LABEL) || |
2446 | bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
32ddd944 BF |
2447 | if (exp->ex_flags & NFSEXP_SECURITY_LABEL) |
2448 | err = security_inode_getsecctx(d_inode(dentry), | |
18032ca0 | 2449 | &context, &contextlen); |
32ddd944 BF |
2450 | else |
2451 | err = -EOPNOTSUPP; | |
18032ca0 DQ |
2452 | contextsupport = (err == 0); |
2453 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { | |
2454 | if (err == -EOPNOTSUPP) | |
2455 | bmval2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2456 | else if (err) | |
2457 | goto out_nfserr; | |
2458 | } | |
2459 | } | |
2460 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ | |
2461 | ||
75976de6 KM |
2462 | status = nfsd4_encode_bitmap(xdr, bmval0, bmval1, bmval2); |
2463 | if (status) | |
2464 | goto out; | |
082d4bd7 BF |
2465 | |
2466 | attrlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
2467 | p = xdr_reserve_space(xdr, 4); |
2468 | if (!p) | |
2469 | goto out_resource; | |
082d4bd7 | 2470 | p++; /* to be backfilled later */ |
1da177e4 LT |
2471 | |
2472 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
dcd20869 BF |
2473 | u32 supp[3]; |
2474 | ||
2475 | memcpy(supp, nfsd_suppattrs[minorversion], sizeof(supp)); | |
7e705706 | 2476 | |
0c9d65e7 | 2477 | if (!IS_POSIXACL(dentry->d_inode)) |
916d2d84 | 2478 | supp[0] &= ~FATTR4_WORD0_ACL; |
18032ca0 | 2479 | if (!contextsupport) |
916d2d84 BF |
2480 | supp[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
2481 | if (!supp[2]) { | |
ddd1ea56 BF |
2482 | p = xdr_reserve_space(xdr, 12); |
2483 | if (!p) | |
2b44f1ba | 2484 | goto out_resource; |
c373b0a4 | 2485 | *p++ = cpu_to_be32(2); |
916d2d84 BF |
2486 | *p++ = cpu_to_be32(supp[0]); |
2487 | *p++ = cpu_to_be32(supp[1]); | |
7e705706 | 2488 | } else { |
ddd1ea56 BF |
2489 | p = xdr_reserve_space(xdr, 16); |
2490 | if (!p) | |
2b44f1ba | 2491 | goto out_resource; |
c373b0a4 | 2492 | *p++ = cpu_to_be32(3); |
916d2d84 BF |
2493 | *p++ = cpu_to_be32(supp[0]); |
2494 | *p++ = cpu_to_be32(supp[1]); | |
2495 | *p++ = cpu_to_be32(supp[2]); | |
7e705706 | 2496 | } |
1da177e4 LT |
2497 | } |
2498 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
ddd1ea56 BF |
2499 | p = xdr_reserve_space(xdr, 4); |
2500 | if (!p) | |
1da177e4 | 2501 | goto out_resource; |
3d2544b1 | 2502 | dummy = nfs4_file_type(stat.mode); |
6b6d8137 BF |
2503 | if (dummy == NF4BAD) { |
2504 | status = nfserr_serverfault; | |
2505 | goto out; | |
2506 | } | |
c373b0a4 | 2507 | *p++ = cpu_to_be32(dummy); |
1da177e4 LT |
2508 | } |
2509 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
ddd1ea56 BF |
2510 | p = xdr_reserve_space(xdr, 4); |
2511 | if (!p) | |
1da177e4 | 2512 | goto out_resource; |
49640001 | 2513 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
c373b0a4 | 2514 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT); |
49640001 | 2515 | else |
c373b0a4 BF |
2516 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT| |
2517 | NFS4_FH_VOL_RENAME); | |
1da177e4 LT |
2518 | } |
2519 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
ddd1ea56 BF |
2520 | p = xdr_reserve_space(xdr, 8); |
2521 | if (!p) | |
1da177e4 | 2522 | goto out_resource; |
b8800921 | 2523 | p = encode_change(p, &stat, d_inode(dentry), exp); |
1da177e4 LT |
2524 | } |
2525 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
ddd1ea56 BF |
2526 | p = xdr_reserve_space(xdr, 8); |
2527 | if (!p) | |
1da177e4 | 2528 | goto out_resource; |
b64c7f3b | 2529 | p = xdr_encode_hyper(p, stat.size); |
1da177e4 LT |
2530 | } |
2531 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
ddd1ea56 BF |
2532 | p = xdr_reserve_space(xdr, 4); |
2533 | if (!p) | |
1da177e4 | 2534 | goto out_resource; |
c373b0a4 | 2535 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2536 | } |
2537 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
ddd1ea56 BF |
2538 | p = xdr_reserve_space(xdr, 4); |
2539 | if (!p) | |
1da177e4 | 2540 | goto out_resource; |
c373b0a4 | 2541 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2542 | } |
2543 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
ddd1ea56 BF |
2544 | p = xdr_reserve_space(xdr, 4); |
2545 | if (!p) | |
1da177e4 | 2546 | goto out_resource; |
c373b0a4 | 2547 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2548 | } |
2549 | if (bmval0 & FATTR4_WORD0_FSID) { | |
ddd1ea56 BF |
2550 | p = xdr_reserve_space(xdr, 16); |
2551 | if (!p) | |
1da177e4 | 2552 | goto out_resource; |
42ca0993 | 2553 | if (exp->ex_fslocs.migrated) { |
b64c7f3b BF |
2554 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MAJOR); |
2555 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
2556 | } else switch(fsid_source(fhp)) { |
2557 | case FSIDSOURCE_FSID: | |
b64c7f3b BF |
2558 | p = xdr_encode_hyper(p, (u64)exp->ex_fsid); |
2559 | p = xdr_encode_hyper(p, (u64)0); | |
af6a4e28 N |
2560 | break; |
2561 | case FSIDSOURCE_DEV: | |
c373b0a4 BF |
2562 | *p++ = cpu_to_be32(0); |
2563 | *p++ = cpu_to_be32(MAJOR(stat.dev)); | |
2564 | *p++ = cpu_to_be32(0); | |
2565 | *p++ = cpu_to_be32(MINOR(stat.dev)); | |
af6a4e28 N |
2566 | break; |
2567 | case FSIDSOURCE_UUID: | |
94eb3689 KM |
2568 | p = xdr_encode_opaque_fixed(p, exp->ex_uuid, |
2569 | EX_UUID_LEN); | |
af6a4e28 | 2570 | break; |
1da177e4 LT |
2571 | } |
2572 | } | |
2573 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
ddd1ea56 BF |
2574 | p = xdr_reserve_space(xdr, 4); |
2575 | if (!p) | |
1da177e4 | 2576 | goto out_resource; |
c373b0a4 | 2577 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2578 | } |
2579 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
ddd1ea56 BF |
2580 | p = xdr_reserve_space(xdr, 4); |
2581 | if (!p) | |
1da177e4 | 2582 | goto out_resource; |
c373b0a4 | 2583 | *p++ = cpu_to_be32(nn->nfsd4_lease); |
1da177e4 LT |
2584 | } |
2585 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
ddd1ea56 BF |
2586 | p = xdr_reserve_space(xdr, 4); |
2587 | if (!p) | |
1da177e4 | 2588 | goto out_resource; |
c373b0a4 | 2589 | *p++ = cpu_to_be32(rdattr_err); |
1da177e4 LT |
2590 | } |
2591 | if (bmval0 & FATTR4_WORD0_ACL) { | |
2592 | struct nfs4_ace *ace; | |
1da177e4 LT |
2593 | |
2594 | if (acl == NULL) { | |
ddd1ea56 BF |
2595 | p = xdr_reserve_space(xdr, 4); |
2596 | if (!p) | |
1da177e4 LT |
2597 | goto out_resource; |
2598 | ||
c373b0a4 | 2599 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2600 | goto out_acl; |
2601 | } | |
ddd1ea56 BF |
2602 | p = xdr_reserve_space(xdr, 4); |
2603 | if (!p) | |
1da177e4 | 2604 | goto out_resource; |
c373b0a4 | 2605 | *p++ = cpu_to_be32(acl->naces); |
1da177e4 | 2606 | |
28e05dd8 | 2607 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
ddd1ea56 BF |
2608 | p = xdr_reserve_space(xdr, 4*3); |
2609 | if (!p) | |
1da177e4 | 2610 | goto out_resource; |
c373b0a4 BF |
2611 | *p++ = cpu_to_be32(ace->type); |
2612 | *p++ = cpu_to_be32(ace->flag); | |
2613 | *p++ = cpu_to_be32(ace->access_mask & | |
2614 | NFS4_ACE_MASK_ALL); | |
ddd1ea56 | 2615 | status = nfsd4_encode_aclname(xdr, rqstp, ace); |
1da177e4 LT |
2616 | if (status) |
2617 | goto out; | |
2618 | } | |
2619 | } | |
2620 | out_acl: | |
2621 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
ddd1ea56 BF |
2622 | p = xdr_reserve_space(xdr, 4); |
2623 | if (!p) | |
1da177e4 | 2624 | goto out_resource; |
0c9d65e7 | 2625 | *p++ = cpu_to_be32(IS_POSIXACL(dentry->d_inode) ? |
1da177e4 LT |
2626 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); |
2627 | } | |
2628 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
ddd1ea56 BF |
2629 | p = xdr_reserve_space(xdr, 4); |
2630 | if (!p) | |
1da177e4 | 2631 | goto out_resource; |
c373b0a4 | 2632 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2633 | } |
2634 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
ddd1ea56 BF |
2635 | p = xdr_reserve_space(xdr, 4); |
2636 | if (!p) | |
1da177e4 | 2637 | goto out_resource; |
c373b0a4 | 2638 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2639 | } |
2640 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
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_CHOWN_RESTRICTED) { | |
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_FILEHANDLE) { | |
ddd1ea56 BF |
2653 | p = xdr_reserve_space(xdr, fhp->fh_handle.fh_size + 4); |
2654 | if (!p) | |
1da177e4 | 2655 | goto out_resource; |
0c0c267b BF |
2656 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, |
2657 | fhp->fh_handle.fh_size); | |
1da177e4 LT |
2658 | } |
2659 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
ddd1ea56 BF |
2660 | p = xdr_reserve_space(xdr, 8); |
2661 | if (!p) | |
1da177e4 | 2662 | goto out_resource; |
b64c7f3b | 2663 | p = xdr_encode_hyper(p, stat.ino); |
1da177e4 LT |
2664 | } |
2665 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
ddd1ea56 BF |
2666 | p = xdr_reserve_space(xdr, 8); |
2667 | if (!p) | |
1da177e4 | 2668 | goto out_resource; |
b64c7f3b | 2669 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
2670 | } |
2671 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
ddd1ea56 BF |
2672 | p = xdr_reserve_space(xdr, 8); |
2673 | if (!p) | |
1da177e4 | 2674 | goto out_resource; |
b64c7f3b | 2675 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
2676 | } |
2677 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
ddd1ea56 BF |
2678 | p = xdr_reserve_space(xdr, 8); |
2679 | if (!p) | |
1da177e4 | 2680 | goto out_resource; |
b64c7f3b | 2681 | p = xdr_encode_hyper(p, (u64) statfs.f_files); |
1da177e4 | 2682 | } |
81c3f413 | 2683 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
ddd1ea56 | 2684 | status = nfsd4_encode_fs_locations(xdr, rqstp, exp); |
81c3f413 BF |
2685 | if (status) |
2686 | goto out; | |
2687 | } | |
1da177e4 | 2688 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
ddd1ea56 BF |
2689 | p = xdr_reserve_space(xdr, 4); |
2690 | if (!p) | |
1da177e4 | 2691 | goto out_resource; |
c373b0a4 | 2692 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2693 | } |
2694 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
ddd1ea56 BF |
2695 | p = xdr_reserve_space(xdr, 8); |
2696 | if (!p) | |
1da177e4 | 2697 | goto out_resource; |
b64c7f3b | 2698 | p = xdr_encode_hyper(p, exp->ex_path.mnt->mnt_sb->s_maxbytes); |
1da177e4 LT |
2699 | } |
2700 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
ddd1ea56 BF |
2701 | p = xdr_reserve_space(xdr, 4); |
2702 | if (!p) | |
1da177e4 | 2703 | goto out_resource; |
c373b0a4 | 2704 | *p++ = cpu_to_be32(255); |
1da177e4 LT |
2705 | } |
2706 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
ddd1ea56 BF |
2707 | p = xdr_reserve_space(xdr, 4); |
2708 | if (!p) | |
1da177e4 | 2709 | goto out_resource; |
c373b0a4 | 2710 | *p++ = cpu_to_be32(statfs.f_namelen); |
1da177e4 LT |
2711 | } |
2712 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
ddd1ea56 BF |
2713 | p = xdr_reserve_space(xdr, 8); |
2714 | if (!p) | |
1da177e4 | 2715 | goto out_resource; |
b64c7f3b | 2716 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2717 | } |
2718 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
ddd1ea56 BF |
2719 | p = xdr_reserve_space(xdr, 8); |
2720 | if (!p) | |
1da177e4 | 2721 | goto out_resource; |
b64c7f3b | 2722 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2723 | } |
2724 | if (bmval1 & FATTR4_WORD1_MODE) { | |
ddd1ea56 BF |
2725 | p = xdr_reserve_space(xdr, 4); |
2726 | if (!p) | |
1da177e4 | 2727 | goto out_resource; |
c373b0a4 | 2728 | *p++ = cpu_to_be32(stat.mode & S_IALLUGO); |
1da177e4 LT |
2729 | } |
2730 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
ddd1ea56 BF |
2731 | p = xdr_reserve_space(xdr, 4); |
2732 | if (!p) | |
1da177e4 | 2733 | goto out_resource; |
c373b0a4 | 2734 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2735 | } |
2736 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
ddd1ea56 BF |
2737 | p = xdr_reserve_space(xdr, 4); |
2738 | if (!p) | |
1da177e4 | 2739 | goto out_resource; |
c373b0a4 | 2740 | *p++ = cpu_to_be32(stat.nlink); |
1da177e4 LT |
2741 | } |
2742 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
ddd1ea56 | 2743 | status = nfsd4_encode_user(xdr, rqstp, stat.uid); |
1da177e4 LT |
2744 | if (status) |
2745 | goto out; | |
2746 | } | |
2747 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
ddd1ea56 | 2748 | status = nfsd4_encode_group(xdr, rqstp, stat.gid); |
1da177e4 LT |
2749 | if (status) |
2750 | goto out; | |
2751 | } | |
2752 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
ddd1ea56 BF |
2753 | p = xdr_reserve_space(xdr, 8); |
2754 | if (!p) | |
1da177e4 | 2755 | goto out_resource; |
c373b0a4 BF |
2756 | *p++ = cpu_to_be32((u32) MAJOR(stat.rdev)); |
2757 | *p++ = cpu_to_be32((u32) MINOR(stat.rdev)); | |
1da177e4 LT |
2758 | } |
2759 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
ddd1ea56 BF |
2760 | p = xdr_reserve_space(xdr, 8); |
2761 | if (!p) | |
1da177e4 LT |
2762 | goto out_resource; |
2763 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
b64c7f3b | 2764 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2765 | } |
2766 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
ddd1ea56 BF |
2767 | p = xdr_reserve_space(xdr, 8); |
2768 | if (!p) | |
1da177e4 LT |
2769 | goto out_resource; |
2770 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
b64c7f3b | 2771 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2772 | } |
2773 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
ddd1ea56 BF |
2774 | p = xdr_reserve_space(xdr, 8); |
2775 | if (!p) | |
1da177e4 LT |
2776 | goto out_resource; |
2777 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
b64c7f3b | 2778 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2779 | } |
2780 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
ddd1ea56 BF |
2781 | p = xdr_reserve_space(xdr, 8); |
2782 | if (!p) | |
1da177e4 LT |
2783 | goto out_resource; |
2784 | dummy64 = (u64)stat.blocks << 9; | |
b64c7f3b | 2785 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2786 | } |
2787 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
ddd1ea56 BF |
2788 | p = xdr_reserve_space(xdr, 12); |
2789 | if (!p) | |
1da177e4 | 2790 | goto out_resource; |
b64c7f3b | 2791 | p = xdr_encode_hyper(p, (s64)stat.atime.tv_sec); |
c373b0a4 | 2792 | *p++ = cpu_to_be32(stat.atime.tv_nsec); |
1da177e4 LT |
2793 | } |
2794 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
ddd1ea56 BF |
2795 | p = xdr_reserve_space(xdr, 12); |
2796 | if (!p) | |
1da177e4 | 2797 | goto out_resource; |
c373b0a4 BF |
2798 | *p++ = cpu_to_be32(0); |
2799 | *p++ = cpu_to_be32(1); | |
2800 | *p++ = cpu_to_be32(0); | |
1da177e4 LT |
2801 | } |
2802 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
ddd1ea56 BF |
2803 | p = xdr_reserve_space(xdr, 12); |
2804 | if (!p) | |
1da177e4 | 2805 | goto out_resource; |
b64c7f3b | 2806 | p = xdr_encode_hyper(p, (s64)stat.ctime.tv_sec); |
c373b0a4 | 2807 | *p++ = cpu_to_be32(stat.ctime.tv_nsec); |
1da177e4 LT |
2808 | } |
2809 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
ddd1ea56 BF |
2810 | p = xdr_reserve_space(xdr, 12); |
2811 | if (!p) | |
1da177e4 | 2812 | goto out_resource; |
b64c7f3b | 2813 | p = xdr_encode_hyper(p, (s64)stat.mtime.tv_sec); |
c373b0a4 | 2814 | *p++ = cpu_to_be32(stat.mtime.tv_nsec); |
1da177e4 LT |
2815 | } |
2816 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
0a2050d7 KM |
2817 | struct kstat parent_stat; |
2818 | u64 ino = stat.ino; | |
2819 | ||
ddd1ea56 BF |
2820 | p = xdr_reserve_space(xdr, 8); |
2821 | if (!p) | |
1da177e4 | 2822 | goto out_resource; |
406a7ea9 FF |
2823 | /* |
2824 | * Get parent's attributes if not ignoring crossmount | |
2825 | * and this is the root of a cross-mounted filesystem. | |
2826 | */ | |
2827 | if (ignore_crossmnt == 0 && | |
0a2050d7 KM |
2828 | dentry == exp->ex_path.mnt->mnt_root) { |
2829 | err = get_parent_attributes(exp, &parent_stat); | |
2830 | if (err) | |
2831 | goto out_nfserr; | |
2832 | ino = parent_stat.ino; | |
2833 | } | |
2834 | p = xdr_encode_hyper(p, ino); | |
1da177e4 | 2835 | } |
9cf514cc | 2836 | #ifdef CONFIG_NFSD_PNFS |
6896f15a | 2837 | if (bmval1 & FATTR4_WORD1_FS_LAYOUT_TYPES) { |
8a4c3926 | 2838 | status = nfsd4_encode_layout_types(xdr, exp->ex_layout_types); |
6896f15a KM |
2839 | if (status) |
2840 | goto out; | |
2841 | } | |
2842 | ||
2843 | if (bmval2 & FATTR4_WORD2_LAYOUT_TYPES) { | |
8a4c3926 | 2844 | status = nfsd4_encode_layout_types(xdr, exp->ex_layout_types); |
6896f15a KM |
2845 | if (status) |
2846 | goto out; | |
9cf514cc CH |
2847 | } |
2848 | ||
2849 | if (bmval2 & FATTR4_WORD2_LAYOUT_BLKSIZE) { | |
2850 | p = xdr_reserve_space(xdr, 4); | |
2851 | if (!p) | |
2852 | goto out_resource; | |
2853 | *p++ = cpu_to_be32(stat.blksize); | |
2854 | } | |
2855 | #endif /* CONFIG_NFSD_PNFS */ | |
8c18f205 | 2856 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
b26b78cb TM |
2857 | u32 supp[3]; |
2858 | ||
2859 | memcpy(supp, nfsd_suppattrs[minorversion], sizeof(supp)); | |
2860 | supp[0] &= NFSD_SUPPATTR_EXCLCREAT_WORD0; | |
2861 | supp[1] &= NFSD_SUPPATTR_EXCLCREAT_WORD1; | |
2862 | supp[2] &= NFSD_SUPPATTR_EXCLCREAT_WORD2; | |
2863 | ||
2864 | status = nfsd4_encode_bitmap(xdr, supp[0], supp[1], supp[2]); | |
75976de6 KM |
2865 | if (status) |
2866 | goto out; | |
8c18f205 | 2867 | } |
7e705706 | 2868 | |
7d580722 KM |
2869 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { |
2870 | status = nfsd4_encode_security_label(xdr, rqstp, context, | |
2871 | contextlen); | |
2872 | if (status) | |
2873 | goto out; | |
2874 | } | |
2875 | ||
082d4bd7 BF |
2876 | attrlen = htonl(xdr->buf->len - attrlen_offset - 4); |
2877 | write_bytes_to_xdr_buf(xdr->buf, attrlen_offset, &attrlen, 4); | |
1da177e4 LT |
2878 | status = nfs_ok; |
2879 | ||
2880 | out: | |
ba4e55bb | 2881 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
18032ca0 DQ |
2882 | if (context) |
2883 | security_release_secctx(context, contextlen); | |
ba4e55bb | 2884 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ |
28e05dd8 | 2885 | kfree(acl); |
18df11d0 | 2886 | if (tempfh) { |
d50e6136 | 2887 | fh_put(tempfh); |
18df11d0 YZ |
2888 | kfree(tempfh); |
2889 | } | |
1fcea5b2 BF |
2890 | if (status) |
2891 | xdr_truncate_encode(xdr, starting_len); | |
1da177e4 LT |
2892 | return status; |
2893 | out_nfserr: | |
b8dd7b9a | 2894 | status = nfserrno(err); |
1da177e4 LT |
2895 | goto out; |
2896 | out_resource: | |
1da177e4 LT |
2897 | status = nfserr_resource; |
2898 | goto out; | |
1da177e4 LT |
2899 | } |
2900 | ||
2825a7f9 BF |
2901 | static void svcxdr_init_encode_from_buffer(struct xdr_stream *xdr, |
2902 | struct xdr_buf *buf, __be32 *p, int bytes) | |
2903 | { | |
2904 | xdr->scratch.iov_len = 0; | |
2905 | memset(buf, 0, sizeof(struct xdr_buf)); | |
2906 | buf->head[0].iov_base = p; | |
2907 | buf->head[0].iov_len = 0; | |
2908 | buf->len = 0; | |
2909 | xdr->buf = buf; | |
2910 | xdr->iov = buf->head; | |
2911 | xdr->p = p; | |
2912 | xdr->end = (void *)p + bytes; | |
2913 | buf->buflen = bytes; | |
2914 | } | |
2915 | ||
d5184658 BF |
2916 | __be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words, |
2917 | struct svc_fh *fhp, struct svc_export *exp, | |
2918 | struct dentry *dentry, u32 *bmval, | |
2919 | struct svc_rqst *rqstp, int ignore_crossmnt) | |
2920 | { | |
2825a7f9 | 2921 | struct xdr_buf dummy; |
d5184658 BF |
2922 | struct xdr_stream xdr; |
2923 | __be32 ret; | |
2924 | ||
2825a7f9 | 2925 | svcxdr_init_encode_from_buffer(&xdr, &dummy, *p, words << 2); |
d5184658 BF |
2926 | ret = nfsd4_encode_fattr(&xdr, fhp, exp, dentry, bmval, rqstp, |
2927 | ignore_crossmnt); | |
2928 | *p = xdr.p; | |
2929 | return ret; | |
2930 | } | |
2931 | ||
c0ce6ec8 BF |
2932 | static inline int attributes_need_mount(u32 *bmval) |
2933 | { | |
2934 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2935 | return 1; | |
2936 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2937 | return 1; | |
2938 | return 0; | |
2939 | } | |
2940 | ||
b37ad28b | 2941 | static __be32 |
561f0ed4 BF |
2942 | nfsd4_encode_dirent_fattr(struct xdr_stream *xdr, struct nfsd4_readdir *cd, |
2943 | const char *name, int namlen) | |
1da177e4 LT |
2944 | { |
2945 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2946 | struct dentry *dentry; | |
b37ad28b | 2947 | __be32 nfserr; |
406a7ea9 | 2948 | int ignore_crossmnt = 0; |
1da177e4 | 2949 | |
bbddca8e | 2950 | dentry = lookup_one_len_unlocked(name, cd->rd_fhp->fh_dentry, namlen); |
1da177e4 LT |
2951 | if (IS_ERR(dentry)) |
2952 | return nfserrno(PTR_ERR(dentry)); | |
2b0143b5 | 2953 | if (d_really_is_negative(dentry)) { |
b2c0cea6 | 2954 | /* |
bbddca8e N |
2955 | * we're not holding the i_mutex here, so there's |
2956 | * a window where this directory entry could have gone | |
2957 | * away. | |
b2c0cea6 BF |
2958 | */ |
2959 | dput(dentry); | |
2960 | return nfserr_noent; | |
2961 | } | |
1da177e4 LT |
2962 | |
2963 | exp_get(exp); | |
406a7ea9 FF |
2964 | /* |
2965 | * In the case of a mountpoint, the client may be asking for | |
2966 | * attributes that are only properties of the underlying filesystem | |
2967 | * as opposed to the cross-mounted file system. In such a case, | |
2968 | * we will not follow the cross mount and will fill the attribtutes | |
2969 | * directly from the mountpoint dentry. | |
2970 | */ | |
3227fa41 | 2971 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
2972 | int err; |
2973 | ||
3227fa41 BF |
2974 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
2975 | && !attributes_need_mount(cd->rd_bmval)) { | |
2976 | ignore_crossmnt = 1; | |
2977 | goto out_encode; | |
2978 | } | |
dcb488a3 AA |
2979 | /* |
2980 | * Why the heck aren't we just using nfsd_lookup?? | |
2981 | * Different "."/".." handling? Something else? | |
2982 | * At least, add a comment here to explain.... | |
2983 | */ | |
021d3a72 BF |
2984 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
2985 | if (err) { | |
2986 | nfserr = nfserrno(err); | |
1da177e4 LT |
2987 | goto out_put; |
2988 | } | |
dcb488a3 AA |
2989 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
2990 | if (nfserr) | |
2991 | goto out_put; | |
1da177e4 LT |
2992 | |
2993 | } | |
3227fa41 | 2994 | out_encode: |
561f0ed4 | 2995 | nfserr = nfsd4_encode_fattr(xdr, NULL, exp, dentry, cd->rd_bmval, |
406a7ea9 | 2996 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
2997 | out_put: |
2998 | dput(dentry); | |
2999 | exp_put(exp); | |
3000 | return nfserr; | |
3001 | } | |
3002 | ||
2ebbc012 | 3003 | static __be32 * |
561f0ed4 | 3004 | nfsd4_encode_rdattr_error(struct xdr_stream *xdr, __be32 nfserr) |
1da177e4 | 3005 | { |
561f0ed4 BF |
3006 | __be32 *p; |
3007 | ||
c3a45617 | 3008 | p = xdr_reserve_space(xdr, 20); |
561f0ed4 | 3009 | if (!p) |
1da177e4 LT |
3010 | return NULL; |
3011 | *p++ = htonl(2); | |
3012 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
3013 | *p++ = htonl(0); /* bmval1 */ | |
3014 | ||
87915c64 | 3015 | *p++ = htonl(4); /* attribute length */ |
1da177e4 | 3016 | *p++ = nfserr; /* no htonl */ |
1da177e4 LT |
3017 | return p; |
3018 | } | |
3019 | ||
3020 | static int | |
a0ad13ef N |
3021 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
3022 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 3023 | { |
a0ad13ef | 3024 | struct readdir_cd *ccd = ccdv; |
1da177e4 | 3025 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
561f0ed4 BF |
3026 | struct xdr_stream *xdr = cd->xdr; |
3027 | int start_offset = xdr->buf->len; | |
3028 | int cookie_offset; | |
aee37764 | 3029 | u32 name_and_cookie; |
561f0ed4 | 3030 | int entry_bytes; |
b37ad28b | 3031 | __be32 nfserr = nfserr_toosmall; |
561f0ed4 BF |
3032 | __be64 wire_offset; |
3033 | __be32 *p; | |
1da177e4 LT |
3034 | |
3035 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
3036 | if (name && isdotent(name, namlen)) { | |
3037 | cd->common.err = nfs_ok; | |
3038 | return 0; | |
3039 | } | |
3040 | ||
561f0ed4 BF |
3041 | if (cd->cookie_offset) { |
3042 | wire_offset = cpu_to_be64(offset); | |
3043 | write_bytes_to_xdr_buf(xdr->buf, cd->cookie_offset, | |
3044 | &wire_offset, 8); | |
3045 | } | |
1da177e4 | 3046 | |
561f0ed4 BF |
3047 | p = xdr_reserve_space(xdr, 4); |
3048 | if (!p) | |
1da177e4 | 3049 | goto fail; |
1da177e4 | 3050 | *p++ = xdr_one; /* mark entry present */ |
561f0ed4 BF |
3051 | cookie_offset = xdr->buf->len; |
3052 | p = xdr_reserve_space(xdr, 3*4 + namlen); | |
3053 | if (!p) | |
3054 | goto fail; | |
1da177e4 LT |
3055 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
3056 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
3057 | ||
561f0ed4 | 3058 | nfserr = nfsd4_encode_dirent_fattr(xdr, cd, name, namlen); |
1da177e4 LT |
3059 | switch (nfserr) { |
3060 | case nfs_ok: | |
1da177e4 LT |
3061 | break; |
3062 | case nfserr_resource: | |
3063 | nfserr = nfserr_toosmall; | |
3064 | goto fail; | |
b2c0cea6 | 3065 | case nfserr_noent: |
f41c5ad2 | 3066 | xdr_truncate_encode(xdr, start_offset); |
b2c0cea6 | 3067 | goto skip_entry; |
1da177e4 LT |
3068 | default: |
3069 | /* | |
3070 | * If the client requested the RDATTR_ERROR attribute, | |
3071 | * we stuff the error code into this attribute | |
3072 | * and continue. If this attribute was not requested, | |
3073 | * then in accordance with the spec, we fail the | |
3074 | * entire READDIR operation(!) | |
3075 | */ | |
3076 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
3077 | goto fail; | |
561f0ed4 | 3078 | p = nfsd4_encode_rdattr_error(xdr, nfserr); |
34081efc FI |
3079 | if (p == NULL) { |
3080 | nfserr = nfserr_toosmall; | |
1da177e4 | 3081 | goto fail; |
34081efc | 3082 | } |
1da177e4 | 3083 | } |
561f0ed4 BF |
3084 | nfserr = nfserr_toosmall; |
3085 | entry_bytes = xdr->buf->len - start_offset; | |
3086 | if (entry_bytes > cd->rd_maxcount) | |
3087 | goto fail; | |
3088 | cd->rd_maxcount -= entry_bytes; | |
aee37764 BF |
3089 | /* |
3090 | * RFC 3530 14.2.24 describes rd_dircount as only a "hint", so | |
3091 | * let's always let through the first entry, at least: | |
3092 | */ | |
0ec016e3 BF |
3093 | if (!cd->rd_dircount) |
3094 | goto fail; | |
3095 | name_and_cookie = 4 + 4 * XDR_QUADLEN(namlen) + 8; | |
aee37764 BF |
3096 | if (name_and_cookie > cd->rd_dircount && cd->cookie_offset) |
3097 | goto fail; | |
3098 | cd->rd_dircount -= min(cd->rd_dircount, name_and_cookie); | |
0ec016e3 | 3099 | |
561f0ed4 | 3100 | cd->cookie_offset = cookie_offset; |
b2c0cea6 | 3101 | skip_entry: |
1da177e4 LT |
3102 | cd->common.err = nfs_ok; |
3103 | return 0; | |
3104 | fail: | |
561f0ed4 | 3105 | xdr_truncate_encode(xdr, start_offset); |
1da177e4 LT |
3106 | cd->common.err = nfserr; |
3107 | return -EINVAL; | |
3108 | } | |
3109 | ||
d0a381dd BF |
3110 | static __be32 |
3111 | nfsd4_encode_stateid(struct xdr_stream *xdr, stateid_t *sid) | |
e2f282b9 | 3112 | { |
bc749ca4 | 3113 | __be32 *p; |
e2f282b9 | 3114 | |
d0a381dd BF |
3115 | p = xdr_reserve_space(xdr, sizeof(stateid_t)); |
3116 | if (!p) | |
3117 | return nfserr_resource; | |
c373b0a4 | 3118 | *p++ = cpu_to_be32(sid->si_generation); |
0c0c267b BF |
3119 | p = xdr_encode_opaque_fixed(p, &sid->si_opaque, |
3120 | sizeof(stateid_opaque_t)); | |
d0a381dd | 3121 | return 0; |
e2f282b9 BH |
3122 | } |
3123 | ||
695e12f8 | 3124 | static __be32 |
b37ad28b | 3125 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 3126 | { |
d0a381dd | 3127 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3128 | __be32 *p; |
1da177e4 | 3129 | |
bac966d6 BF |
3130 | p = xdr_reserve_space(xdr, 8); |
3131 | if (!p) | |
3132 | return nfserr_resource; | |
3133 | *p++ = cpu_to_be32(access->ac_supported); | |
3134 | *p++ = cpu_to_be32(access->ac_resp_access); | |
3135 | return 0; | |
1da177e4 LT |
3136 | } |
3137 | ||
1d1bc8f2 BF |
3138 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
3139 | { | |
d0a381dd | 3140 | struct xdr_stream *xdr = &resp->xdr; |
1d1bc8f2 BF |
3141 | __be32 *p; |
3142 | ||
bac966d6 BF |
3143 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 8); |
3144 | if (!p) | |
3145 | return nfserr_resource; | |
3146 | p = xdr_encode_opaque_fixed(p, bcts->sessionid.data, | |
3147 | NFS4_MAX_SESSIONID_LEN); | |
3148 | *p++ = cpu_to_be32(bcts->dir); | |
3149 | /* Upshifting from TCP to RDMA is not supported */ | |
3150 | *p++ = cpu_to_be32(0); | |
3151 | return 0; | |
1d1bc8f2 BF |
3152 | } |
3153 | ||
695e12f8 | 3154 | static __be32 |
b37ad28b | 3155 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 | 3156 | { |
d0a381dd BF |
3157 | struct xdr_stream *xdr = &resp->xdr; |
3158 | ||
bac966d6 | 3159 | return nfsd4_encode_stateid(xdr, &close->cl_stateid); |
1da177e4 LT |
3160 | } |
3161 | ||
3162 | ||
695e12f8 | 3163 | static __be32 |
b37ad28b | 3164 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 3165 | { |
d0a381dd | 3166 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3167 | __be32 *p; |
1da177e4 | 3168 | |
bac966d6 BF |
3169 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
3170 | if (!p) | |
3171 | return nfserr_resource; | |
3172 | p = xdr_encode_opaque_fixed(p, commit->co_verf.data, | |
0c0c267b | 3173 | NFS4_VERIFIER_SIZE); |
bac966d6 | 3174 | return 0; |
1da177e4 LT |
3175 | } |
3176 | ||
695e12f8 | 3177 | static __be32 |
b37ad28b | 3178 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 3179 | { |
d0a381dd | 3180 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3181 | __be32 *p; |
1da177e4 | 3182 | |
bac966d6 BF |
3183 | p = xdr_reserve_space(xdr, 20); |
3184 | if (!p) | |
3185 | return nfserr_resource; | |
3186 | encode_cinfo(p, &create->cr_cinfo); | |
3187 | nfserr = nfsd4_encode_bitmap(xdr, create->cr_bmval[0], | |
3188 | create->cr_bmval[1], create->cr_bmval[2]); | |
3189 | return 0; | |
1da177e4 LT |
3190 | } |
3191 | ||
b37ad28b AV |
3192 | static __be32 |
3193 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
3194 | { |
3195 | struct svc_fh *fhp = getattr->ga_fhp; | |
d5184658 | 3196 | struct xdr_stream *xdr = &resp->xdr; |
1da177e4 | 3197 | |
bac966d6 BF |
3198 | return nfsd4_encode_fattr(xdr, fhp, fhp->fh_export, fhp->fh_dentry, |
3199 | getattr->ga_bmval, resp->rqstp, 0); | |
1da177e4 LT |
3200 | } |
3201 | ||
695e12f8 BH |
3202 | static __be32 |
3203 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 3204 | { |
d0a381dd | 3205 | struct xdr_stream *xdr = &resp->xdr; |
695e12f8 | 3206 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 3207 | unsigned int len; |
bc749ca4 | 3208 | __be32 *p; |
1da177e4 | 3209 | |
bac966d6 BF |
3210 | len = fhp->fh_handle.fh_size; |
3211 | p = xdr_reserve_space(xdr, len + 4); | |
3212 | if (!p) | |
3213 | return nfserr_resource; | |
3214 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, len); | |
3215 | return 0; | |
1da177e4 LT |
3216 | } |
3217 | ||
3218 | /* | |
3219 | * Including all fields other than the name, a LOCK4denied structure requires | |
3220 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
3221 | */ | |
d0a381dd BF |
3222 | static __be32 |
3223 | nfsd4_encode_lock_denied(struct xdr_stream *xdr, struct nfsd4_lock_denied *ld) | |
1da177e4 | 3224 | { |
7c13f344 | 3225 | struct xdr_netobj *conf = &ld->ld_owner; |
bc749ca4 | 3226 | __be32 *p; |
1da177e4 | 3227 | |
8c7424cf | 3228 | again: |
d0a381dd | 3229 | p = xdr_reserve_space(xdr, 32 + XDR_LEN(conf->len)); |
8c7424cf BF |
3230 | if (!p) { |
3231 | /* | |
3232 | * Don't fail to return the result just because we can't | |
3233 | * return the conflicting open: | |
3234 | */ | |
3235 | if (conf->len) { | |
f98bac5a | 3236 | kfree(conf->data); |
8c7424cf BF |
3237 | conf->len = 0; |
3238 | conf->data = NULL; | |
3239 | goto again; | |
3240 | } | |
d0a381dd | 3241 | return nfserr_resource; |
8c7424cf | 3242 | } |
b64c7f3b BF |
3243 | p = xdr_encode_hyper(p, ld->ld_start); |
3244 | p = xdr_encode_hyper(p, ld->ld_length); | |
c373b0a4 | 3245 | *p++ = cpu_to_be32(ld->ld_type); |
7c13f344 | 3246 | if (conf->len) { |
0c0c267b BF |
3247 | p = xdr_encode_opaque_fixed(p, &ld->ld_clientid, 8); |
3248 | p = xdr_encode_opaque(p, conf->data, conf->len); | |
f98bac5a | 3249 | kfree(conf->data); |
1da177e4 | 3250 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
b64c7f3b | 3251 | p = xdr_encode_hyper(p, (u64)0); /* clientid */ |
c373b0a4 | 3252 | *p++ = cpu_to_be32(0); /* length of owner name */ |
1da177e4 | 3253 | } |
d0a381dd | 3254 | return nfserr_denied; |
1da177e4 LT |
3255 | } |
3256 | ||
695e12f8 | 3257 | static __be32 |
b37ad28b | 3258 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 3259 | { |
d0a381dd BF |
3260 | struct xdr_stream *xdr = &resp->xdr; |
3261 | ||
e2f282b9 | 3262 | if (!nfserr) |
d0a381dd | 3263 | nfserr = nfsd4_encode_stateid(xdr, &lock->lk_resp_stateid); |
e2f282b9 | 3264 | else if (nfserr == nfserr_denied) |
d0a381dd | 3265 | nfserr = nfsd4_encode_lock_denied(xdr, &lock->lk_denied); |
f98bac5a | 3266 | |
695e12f8 | 3267 | return nfserr; |
1da177e4 LT |
3268 | } |
3269 | ||
695e12f8 | 3270 | static __be32 |
b37ad28b | 3271 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 | 3272 | { |
d0a381dd BF |
3273 | struct xdr_stream *xdr = &resp->xdr; |
3274 | ||
1da177e4 | 3275 | if (nfserr == nfserr_denied) |
d0a381dd | 3276 | nfsd4_encode_lock_denied(xdr, &lockt->lt_denied); |
695e12f8 | 3277 | return nfserr; |
1da177e4 LT |
3278 | } |
3279 | ||
695e12f8 | 3280 | static __be32 |
b37ad28b | 3281 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 | 3282 | { |
d0a381dd BF |
3283 | struct xdr_stream *xdr = &resp->xdr; |
3284 | ||
bac966d6 | 3285 | return nfsd4_encode_stateid(xdr, &locku->lu_stateid); |
1da177e4 LT |
3286 | } |
3287 | ||
3288 | ||
695e12f8 | 3289 | static __be32 |
b37ad28b | 3290 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 3291 | { |
d0a381dd | 3292 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3293 | __be32 *p; |
1da177e4 | 3294 | |
bac966d6 BF |
3295 | p = xdr_reserve_space(xdr, 20); |
3296 | if (!p) | |
3297 | return nfserr_resource; | |
3298 | p = encode_cinfo(p, &link->li_cinfo); | |
3299 | return 0; | |
1da177e4 LT |
3300 | } |
3301 | ||
3302 | ||
695e12f8 | 3303 | static __be32 |
b37ad28b | 3304 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 3305 | { |
d0a381dd | 3306 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3307 | __be32 *p; |
1da177e4 | 3308 | |
d0a381dd BF |
3309 | nfserr = nfsd4_encode_stateid(xdr, &open->op_stateid); |
3310 | if (nfserr) | |
bac966d6 | 3311 | return nfserr; |
75976de6 | 3312 | p = xdr_reserve_space(xdr, 24); |
d0a381dd BF |
3313 | if (!p) |
3314 | return nfserr_resource; | |
d05d5744 | 3315 | p = encode_cinfo(p, &open->op_cinfo); |
c373b0a4 | 3316 | *p++ = cpu_to_be32(open->op_rflags); |
1da177e4 | 3317 | |
75976de6 KM |
3318 | nfserr = nfsd4_encode_bitmap(xdr, open->op_bmval[0], open->op_bmval[1], |
3319 | open->op_bmval[2]); | |
3320 | if (nfserr) | |
bac966d6 | 3321 | return nfserr; |
75976de6 KM |
3322 | |
3323 | p = xdr_reserve_space(xdr, 4); | |
3324 | if (!p) | |
3325 | return nfserr_resource; | |
3326 | ||
3327 | *p++ = cpu_to_be32(open->op_delegate_type); | |
1da177e4 LT |
3328 | switch (open->op_delegate_type) { |
3329 | case NFS4_OPEN_DELEGATE_NONE: | |
3330 | break; | |
3331 | case NFS4_OPEN_DELEGATE_READ: | |
d0a381dd BF |
3332 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
3333 | if (nfserr) | |
3334 | return nfserr; | |
3335 | p = xdr_reserve_space(xdr, 20); | |
3336 | if (!p) | |
3337 | return nfserr_resource; | |
c373b0a4 | 3338 | *p++ = cpu_to_be32(open->op_recall); |
1da177e4 LT |
3339 | |
3340 | /* | |
3341 | * TODO: ACE's in delegations | |
3342 | */ | |
c373b0a4 BF |
3343 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
3344 | *p++ = cpu_to_be32(0); | |
3345 | *p++ = cpu_to_be32(0); | |
3346 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 LT |
3347 | break; |
3348 | case NFS4_OPEN_DELEGATE_WRITE: | |
d0a381dd BF |
3349 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
3350 | if (nfserr) | |
3351 | return nfserr; | |
3352 | p = xdr_reserve_space(xdr, 32); | |
3353 | if (!p) | |
3354 | return nfserr_resource; | |
c373b0a4 | 3355 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
3356 | |
3357 | /* | |
3358 | * TODO: space_limit's in delegations | |
3359 | */ | |
c373b0a4 BF |
3360 | *p++ = cpu_to_be32(NFS4_LIMIT_SIZE); |
3361 | *p++ = cpu_to_be32(~(u32)0); | |
3362 | *p++ = cpu_to_be32(~(u32)0); | |
1da177e4 LT |
3363 | |
3364 | /* | |
3365 | * TODO: ACE's in delegations | |
3366 | */ | |
c373b0a4 BF |
3367 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
3368 | *p++ = cpu_to_be32(0); | |
3369 | *p++ = cpu_to_be32(0); | |
3370 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 | 3371 | break; |
d24433cd BH |
3372 | case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */ |
3373 | switch (open->op_why_no_deleg) { | |
3374 | case WND4_CONTENTION: | |
3375 | case WND4_RESOURCE: | |
d0a381dd BF |
3376 | p = xdr_reserve_space(xdr, 8); |
3377 | if (!p) | |
3378 | return nfserr_resource; | |
c373b0a4 BF |
3379 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
3380 | /* deleg signaling not supported yet: */ | |
3381 | *p++ = cpu_to_be32(0); | |
d24433cd BH |
3382 | break; |
3383 | default: | |
d0a381dd BF |
3384 | p = xdr_reserve_space(xdr, 4); |
3385 | if (!p) | |
3386 | return nfserr_resource; | |
c373b0a4 | 3387 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
d24433cd | 3388 | } |
d24433cd | 3389 | break; |
1da177e4 LT |
3390 | default: |
3391 | BUG(); | |
3392 | } | |
3393 | /* XXX save filehandle here */ | |
bac966d6 | 3394 | return 0; |
1da177e4 LT |
3395 | } |
3396 | ||
695e12f8 | 3397 | static __be32 |
b37ad28b | 3398 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 | 3399 | { |
d0a381dd BF |
3400 | struct xdr_stream *xdr = &resp->xdr; |
3401 | ||
bac966d6 | 3402 | return nfsd4_encode_stateid(xdr, &oc->oc_resp_stateid); |
1da177e4 LT |
3403 | } |
3404 | ||
695e12f8 | 3405 | static __be32 |
b37ad28b | 3406 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 | 3407 | { |
d0a381dd BF |
3408 | struct xdr_stream *xdr = &resp->xdr; |
3409 | ||
bac966d6 | 3410 | return nfsd4_encode_stateid(xdr, &od->od_stateid); |
1da177e4 LT |
3411 | } |
3412 | ||
dc97618d BF |
3413 | static __be32 nfsd4_encode_splice_read( |
3414 | struct nfsd4_compoundres *resp, | |
3415 | struct nfsd4_read *read, | |
3416 | struct file *file, unsigned long maxcount) | |
1da177e4 | 3417 | { |
ddd1ea56 | 3418 | struct xdr_stream *xdr = &resp->xdr; |
34a78b48 | 3419 | struct xdr_buf *buf = xdr->buf; |
dc97618d | 3420 | u32 eof; |
ac503e4a | 3421 | long len; |
30596768 | 3422 | int space_left; |
dc97618d | 3423 | __be32 nfserr; |
fec25fa4 | 3424 | __be32 *p = xdr->p - 2; |
1da177e4 | 3425 | |
d5d5c304 KM |
3426 | /* Make sure there will be room for padding if needed */ |
3427 | if (xdr->end - xdr->p < 1) | |
d0a381dd | 3428 | return nfserr_resource; |
dc97618d | 3429 | |
ac503e4a | 3430 | len = maxcount; |
dc97618d BF |
3431 | nfserr = nfsd_splice_read(read->rd_rqstp, file, |
3432 | read->rd_offset, &maxcount); | |
3433 | if (nfserr) { | |
3434 | /* | |
3435 | * nfsd_splice_actor may have already messed with the | |
3436 | * page length; reset it so as not to confuse | |
3437 | * xdr_truncate_encode: | |
3438 | */ | |
34a78b48 | 3439 | buf->page_len = 0; |
dc97618d | 3440 | return nfserr; |
b0e35fda | 3441 | } |
1da177e4 | 3442 | |
ac503e4a BC |
3443 | eof = nfsd_eof_on_read(len, maxcount, read->rd_offset, |
3444 | d_inode(read->rd_fhp->fh_dentry)->i_size); | |
4e21ac4b | 3445 | |
fec25fa4 BF |
3446 | *(p++) = htonl(eof); |
3447 | *(p++) = htonl(maxcount); | |
dc97618d | 3448 | |
34a78b48 BF |
3449 | buf->page_len = maxcount; |
3450 | buf->len += maxcount; | |
15b23ef5 BF |
3451 | xdr->page_ptr += (buf->page_base + maxcount + PAGE_SIZE - 1) |
3452 | / PAGE_SIZE; | |
dc97618d BF |
3453 | |
3454 | /* Use rest of head for padding and remaining ops: */ | |
34a78b48 BF |
3455 | buf->tail[0].iov_base = xdr->p; |
3456 | buf->tail[0].iov_len = 0; | |
fec25fa4 | 3457 | xdr->iov = buf->tail; |
dc97618d | 3458 | if (maxcount&3) { |
fec25fa4 BF |
3459 | int pad = 4 - (maxcount&3); |
3460 | ||
3461 | *(xdr->p++) = 0; | |
3462 | ||
34a78b48 | 3463 | buf->tail[0].iov_base += maxcount&3; |
fec25fa4 BF |
3464 | buf->tail[0].iov_len = pad; |
3465 | buf->len += pad; | |
b0e35fda | 3466 | } |
2825a7f9 | 3467 | |
dc97618d | 3468 | space_left = min_t(int, (void *)xdr->end - (void *)xdr->p, |
34a78b48 BF |
3469 | buf->buflen - buf->len); |
3470 | buf->buflen = buf->len + space_left; | |
dc97618d BF |
3471 | xdr->end = (__be32 *)((void *)xdr->end + space_left); |
3472 | ||
3473 | return 0; | |
3474 | } | |
3475 | ||
3476 | static __be32 nfsd4_encode_readv(struct nfsd4_compoundres *resp, | |
3477 | struct nfsd4_read *read, | |
3478 | struct file *file, unsigned long maxcount) | |
3479 | { | |
3480 | struct xdr_stream *xdr = &resp->xdr; | |
3481 | u32 eof; | |
3482 | int v; | |
dc97618d | 3483 | int starting_len = xdr->buf->len - 8; |
dc97618d | 3484 | long len; |
b0420980 | 3485 | int thislen; |
dc97618d BF |
3486 | __be32 nfserr; |
3487 | __be32 tmp; | |
3488 | __be32 *p; | |
b0420980 BF |
3489 | u32 zzz = 0; |
3490 | int pad; | |
1da177e4 LT |
3491 | |
3492 | len = maxcount; | |
3493 | v = 0; | |
6ff9897d | 3494 | |
1055414f | 3495 | thislen = min_t(long, len, ((void *)xdr->end - (void *)xdr->p)); |
b0420980 BF |
3496 | p = xdr_reserve_space(xdr, (thislen+3)&~3); |
3497 | WARN_ON_ONCE(!p); | |
3498 | resp->rqstp->rq_vec[v].iov_base = p; | |
3499 | resp->rqstp->rq_vec[v].iov_len = thislen; | |
3500 | v++; | |
3501 | len -= thislen; | |
3502 | ||
3503 | while (len) { | |
6ff9897d | 3504 | thislen = min_t(long, len, PAGE_SIZE); |
b0420980 BF |
3505 | p = xdr_reserve_space(xdr, (thislen+3)&~3); |
3506 | WARN_ON_ONCE(!p); | |
3507 | resp->rqstp->rq_vec[v].iov_base = p; | |
6ff9897d | 3508 | resp->rqstp->rq_vec[v].iov_len = thislen; |
1da177e4 | 3509 | v++; |
6ff9897d | 3510 | len -= thislen; |
1da177e4 LT |
3511 | } |
3512 | read->rd_vlen = v; | |
3513 | ||
ac503e4a | 3514 | len = maxcount; |
dc97618d BF |
3515 | nfserr = nfsd_readv(file, read->rd_offset, resp->rqstp->rq_vec, |
3516 | read->rd_vlen, &maxcount); | |
3517 | if (nfserr) | |
1da177e4 | 3518 | return nfserr; |
b0420980 | 3519 | xdr_truncate_encode(xdr, starting_len + 8 + ((maxcount+3)&~3)); |
dc97618d | 3520 | |
ac503e4a BC |
3521 | eof = nfsd_eof_on_read(len, maxcount, read->rd_offset, |
3522 | d_inode(read->rd_fhp->fh_dentry)->i_size); | |
1da177e4 | 3523 | |
dc97618d BF |
3524 | tmp = htonl(eof); |
3525 | write_bytes_to_xdr_buf(xdr->buf, starting_len , &tmp, 4); | |
3526 | tmp = htonl(maxcount); | |
3527 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 4, &tmp, 4); | |
3528 | ||
b0420980 BF |
3529 | pad = (maxcount&3) ? 4 - (maxcount&3) : 0; |
3530 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 8 + maxcount, | |
3531 | &zzz, pad); | |
1da177e4 | 3532 | return 0; |
dc97618d BF |
3533 | |
3534 | } | |
3535 | ||
3536 | static __be32 | |
3537 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3538 | struct nfsd4_read *read) | |
3539 | { | |
3540 | unsigned long maxcount; | |
3541 | struct xdr_stream *xdr = &resp->xdr; | |
3542 | struct file *file = read->rd_filp; | |
3543 | int starting_len = xdr->buf->len; | |
e749a462 | 3544 | struct raparms *ra = NULL; |
dc97618d | 3545 | __be32 *p; |
dc97618d | 3546 | |
dc97618d BF |
3547 | p = xdr_reserve_space(xdr, 8); /* eof flag and byte count */ |
3548 | if (!p) { | |
779fb0f3 | 3549 | WARN_ON_ONCE(test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)); |
bac966d6 | 3550 | return nfserr_resource; |
dc97618d | 3551 | } |
68e8bb03 CH |
3552 | if (resp->xdr.buf->page_len && |
3553 | test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) { | |
b0420980 | 3554 | WARN_ON_ONCE(1); |
bac966d6 | 3555 | return nfserr_resource; |
dc97618d | 3556 | } |
dc97618d BF |
3557 | xdr_commit_encode(xdr); |
3558 | ||
3559 | maxcount = svc_max_payload(resp->rqstp); | |
68e8bb03 CH |
3560 | maxcount = min_t(unsigned long, maxcount, |
3561 | (xdr->buf->buflen - xdr->buf->len)); | |
3c7aa15d | 3562 | maxcount = min_t(unsigned long, maxcount, read->rd_length); |
dc97618d | 3563 | |
af90f707 | 3564 | if (read->rd_tmp_file) |
e749a462 | 3565 | ra = nfsd_init_raparms(file); |
dc97618d | 3566 | |
68e8bb03 CH |
3567 | if (file->f_op->splice_read && |
3568 | test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) | |
96bcad50 | 3569 | nfserr = nfsd4_encode_splice_read(resp, read, file, maxcount); |
dc97618d | 3570 | else |
96bcad50 | 3571 | nfserr = nfsd4_encode_readv(resp, read, file, maxcount); |
dc97618d | 3572 | |
e749a462 CH |
3573 | if (ra) |
3574 | nfsd_put_raparams(file, ra); | |
dc97618d | 3575 | |
96bcad50 | 3576 | if (nfserr) |
dc97618d | 3577 | xdr_truncate_encode(xdr, starting_len); |
96bcad50 | 3578 | |
96bcad50 | 3579 | return nfserr; |
1da177e4 LT |
3580 | } |
3581 | ||
b37ad28b AV |
3582 | static __be32 |
3583 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
3584 | { |
3585 | int maxcount; | |
476a7b1f BF |
3586 | __be32 wire_count; |
3587 | int zero = 0; | |
ddd1ea56 | 3588 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3589 | int length_offset = xdr->buf->len; |
bc749ca4 | 3590 | __be32 *p; |
1da177e4 | 3591 | |
2825a7f9 BF |
3592 | p = xdr_reserve_space(xdr, 4); |
3593 | if (!p) | |
3594 | return nfserr_resource; | |
1da177e4 | 3595 | maxcount = PAGE_SIZE; |
d0a381dd | 3596 | |
476a7b1f BF |
3597 | p = xdr_reserve_space(xdr, maxcount); |
3598 | if (!p) | |
4e21ac4b | 3599 | return nfserr_resource; |
1da177e4 | 3600 | /* |
fd4a0edf MS |
3601 | * XXX: By default, vfs_readlink() will truncate symlinks if they |
3602 | * would overflow the buffer. Is this kosher in NFSv4? If not, one | |
3603 | * easy fix is: if vfs_readlink() precisely fills the buffer, assume | |
3604 | * that truncation occurred, and return NFS4ERR_RESOURCE. | |
1da177e4 | 3605 | */ |
476a7b1f BF |
3606 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, |
3607 | (char *)p, &maxcount); | |
1da177e4 | 3608 | if (nfserr == nfserr_isdir) |
d3f627c8 BF |
3609 | nfserr = nfserr_inval; |
3610 | if (nfserr) { | |
1fcea5b2 | 3611 | xdr_truncate_encode(xdr, length_offset); |
1da177e4 | 3612 | return nfserr; |
d3f627c8 | 3613 | } |
1da177e4 | 3614 | |
476a7b1f BF |
3615 | wire_count = htonl(maxcount); |
3616 | write_bytes_to_xdr_buf(xdr->buf, length_offset, &wire_count, 4); | |
69bbd9c7 | 3617 | xdr_truncate_encode(xdr, length_offset + 4 + ALIGN(maxcount, 4)); |
476a7b1f BF |
3618 | if (maxcount & 3) |
3619 | write_bytes_to_xdr_buf(xdr->buf, length_offset + 4 + maxcount, | |
3620 | &zero, 4 - (maxcount&3)); | |
1da177e4 LT |
3621 | return 0; |
3622 | } | |
3623 | ||
b37ad28b AV |
3624 | static __be32 |
3625 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
3626 | { |
3627 | int maxcount; | |
561f0ed4 | 3628 | int bytes_left; |
1da177e4 | 3629 | loff_t offset; |
561f0ed4 | 3630 | __be64 wire_offset; |
ddd1ea56 | 3631 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3632 | int starting_len = xdr->buf->len; |
bc749ca4 | 3633 | __be32 *p; |
1da177e4 | 3634 | |
d0a381dd BF |
3635 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
3636 | if (!p) | |
3637 | return nfserr_resource; | |
1da177e4 LT |
3638 | |
3639 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
c373b0a4 BF |
3640 | *p++ = cpu_to_be32(0); |
3641 | *p++ = cpu_to_be32(0); | |
4aea24b2 BF |
3642 | resp->xdr.buf->head[0].iov_len = ((char *)resp->xdr.p) |
3643 | - (char *)resp->xdr.buf->head[0].iov_base; | |
1da177e4 LT |
3644 | |
3645 | /* | |
561f0ed4 BF |
3646 | * Number of bytes left for directory entries allowing for the |
3647 | * final 8 bytes of the readdir and a following failed op: | |
3648 | */ | |
3649 | bytes_left = xdr->buf->buflen - xdr->buf->len | |
3650 | - COMPOUND_ERR_SLACK_SPACE - 8; | |
3651 | if (bytes_left < 0) { | |
3652 | nfserr = nfserr_resource; | |
3653 | goto err_no_verf; | |
3654 | } | |
3655 | maxcount = min_t(u32, readdir->rd_maxcount, INT_MAX); | |
3656 | /* | |
3657 | * Note the rfc defines rd_maxcount as the size of the | |
3658 | * READDIR4resok structure, which includes the verifier above | |
3659 | * and the 8 bytes encoded at the end of this function: | |
1da177e4 | 3660 | */ |
561f0ed4 BF |
3661 | if (maxcount < 16) { |
3662 | nfserr = nfserr_toosmall; | |
1da177e4 LT |
3663 | goto err_no_verf; |
3664 | } | |
561f0ed4 | 3665 | maxcount = min_t(int, maxcount-16, bytes_left); |
1da177e4 | 3666 | |
aee37764 BF |
3667 | /* RFC 3530 14.2.24 allows us to ignore dircount when it's 0: */ |
3668 | if (!readdir->rd_dircount) | |
3669 | readdir->rd_dircount = INT_MAX; | |
3670 | ||
561f0ed4 BF |
3671 | readdir->xdr = xdr; |
3672 | readdir->rd_maxcount = maxcount; | |
1da177e4 | 3673 | readdir->common.err = 0; |
561f0ed4 | 3674 | readdir->cookie_offset = 0; |
1da177e4 LT |
3675 | |
3676 | offset = readdir->rd_cookie; | |
3677 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
3678 | &offset, | |
3679 | &readdir->common, nfsd4_encode_dirent); | |
3680 | if (nfserr == nfs_ok && | |
3681 | readdir->common.err == nfserr_toosmall && | |
561f0ed4 BF |
3682 | xdr->buf->len == starting_len + 8) { |
3683 | /* nothing encoded; which limit did we hit?: */ | |
3684 | if (maxcount - 16 < bytes_left) | |
3685 | /* It was the fault of rd_maxcount: */ | |
3686 | nfserr = nfserr_toosmall; | |
3687 | else | |
3688 | /* We ran out of buffer space: */ | |
3689 | nfserr = nfserr_resource; | |
3690 | } | |
1da177e4 LT |
3691 | if (nfserr) |
3692 | goto err_no_verf; | |
3693 | ||
561f0ed4 BF |
3694 | if (readdir->cookie_offset) { |
3695 | wire_offset = cpu_to_be64(offset); | |
3696 | write_bytes_to_xdr_buf(xdr->buf, readdir->cookie_offset, | |
3697 | &wire_offset, 8); | |
3698 | } | |
1da177e4 | 3699 | |
561f0ed4 BF |
3700 | p = xdr_reserve_space(xdr, 8); |
3701 | if (!p) { | |
3702 | WARN_ON_ONCE(1); | |
3703 | goto err_no_verf; | |
3704 | } | |
1da177e4 LT |
3705 | *p++ = 0; /* no more entries */ |
3706 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
1da177e4 LT |
3707 | |
3708 | return 0; | |
3709 | err_no_verf: | |
1fcea5b2 | 3710 | xdr_truncate_encode(xdr, starting_len); |
1da177e4 LT |
3711 | return nfserr; |
3712 | } | |
3713 | ||
695e12f8 | 3714 | static __be32 |
b37ad28b | 3715 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 3716 | { |
d0a381dd | 3717 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3718 | __be32 *p; |
1da177e4 | 3719 | |
bac966d6 BF |
3720 | p = xdr_reserve_space(xdr, 20); |
3721 | if (!p) | |
3722 | return nfserr_resource; | |
3723 | p = encode_cinfo(p, &remove->rm_cinfo); | |
3724 | return 0; | |
1da177e4 LT |
3725 | } |
3726 | ||
695e12f8 | 3727 | static __be32 |
b37ad28b | 3728 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 3729 | { |
d0a381dd | 3730 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3731 | __be32 *p; |
1da177e4 | 3732 | |
bac966d6 BF |
3733 | p = xdr_reserve_space(xdr, 40); |
3734 | if (!p) | |
3735 | return nfserr_resource; | |
3736 | p = encode_cinfo(p, &rename->rn_sinfo); | |
3737 | p = encode_cinfo(p, &rename->rn_tinfo); | |
3738 | return 0; | |
1da177e4 LT |
3739 | } |
3740 | ||
695e12f8 | 3741 | static __be32 |
bac966d6 | 3742 | nfsd4_do_encode_secinfo(struct xdr_stream *xdr, struct svc_export *exp) |
dcb488a3 | 3743 | { |
676e4ebd | 3744 | u32 i, nflavs, supported; |
4796f457 BF |
3745 | struct exp_flavor_info *flavs; |
3746 | struct exp_flavor_info def_flavs[2]; | |
676e4ebd CL |
3747 | __be32 *p, *flavorsp; |
3748 | static bool report = true; | |
dcb488a3 | 3749 | |
4796f457 BF |
3750 | if (exp->ex_nflavors) { |
3751 | flavs = exp->ex_flavors; | |
3752 | nflavs = exp->ex_nflavors; | |
3753 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
3754 | flavs = def_flavs; | |
3755 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
3756 | nflavs = 2; | |
3757 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
3758 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
3759 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
3760 | nflavs = 1; | |
3761 | flavs[0].pseudoflavor | |
3762 | = svcauth_gss_flavor(exp->ex_client); | |
3763 | } else { | |
3764 | nflavs = 1; | |
3765 | flavs[0].pseudoflavor | |
3766 | = exp->ex_client->flavour->flavour; | |
3767 | } | |
3768 | } | |
3769 | ||
676e4ebd | 3770 | supported = 0; |
d0a381dd BF |
3771 | p = xdr_reserve_space(xdr, 4); |
3772 | if (!p) | |
bac966d6 | 3773 | return nfserr_resource; |
676e4ebd | 3774 | flavorsp = p++; /* to be backfilled later */ |
676e4ebd | 3775 | |
4796f457 | 3776 | for (i = 0; i < nflavs; i++) { |
676e4ebd | 3777 | rpc_authflavor_t pf = flavs[i].pseudoflavor; |
a77c806f | 3778 | struct rpcsec_gss_info info; |
dcb488a3 | 3779 | |
676e4ebd CL |
3780 | if (rpcauth_get_gssinfo(pf, &info) == 0) { |
3781 | supported++; | |
d0a381dd BF |
3782 | p = xdr_reserve_space(xdr, 4 + 4 + |
3783 | XDR_LEN(info.oid.len) + 4 + 4); | |
3784 | if (!p) | |
bac966d6 | 3785 | return nfserr_resource; |
c373b0a4 | 3786 | *p++ = cpu_to_be32(RPC_AUTH_GSS); |
0c0c267b | 3787 | p = xdr_encode_opaque(p, info.oid.data, info.oid.len); |
c373b0a4 BF |
3788 | *p++ = cpu_to_be32(info.qop); |
3789 | *p++ = cpu_to_be32(info.service); | |
676e4ebd CL |
3790 | } else if (pf < RPC_AUTH_MAXFLAVOR) { |
3791 | supported++; | |
d0a381dd BF |
3792 | p = xdr_reserve_space(xdr, 4); |
3793 | if (!p) | |
bac966d6 | 3794 | return nfserr_resource; |
c373b0a4 | 3795 | *p++ = cpu_to_be32(pf); |
676e4ebd CL |
3796 | } else { |
3797 | if (report) | |
3798 | pr_warn("NFS: SECINFO: security flavor %u " | |
3799 | "is not supported\n", pf); | |
dcb488a3 AA |
3800 | } |
3801 | } | |
a77c806f | 3802 | |
676e4ebd CL |
3803 | if (nflavs != supported) |
3804 | report = false; | |
3805 | *flavorsp = htonl(supported); | |
bac966d6 | 3806 | return 0; |
dcb488a3 AA |
3807 | } |
3808 | ||
22b6dee8 MJ |
3809 | static __be32 |
3810 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3811 | struct nfsd4_secinfo *secinfo) | |
3812 | { | |
d0a381dd BF |
3813 | struct xdr_stream *xdr = &resp->xdr; |
3814 | ||
bac966d6 | 3815 | return nfsd4_do_encode_secinfo(xdr, secinfo->si_exp); |
22b6dee8 MJ |
3816 | } |
3817 | ||
3818 | static __be32 | |
3819 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3820 | struct nfsd4_secinfo_no_name *secinfo) | |
3821 | { | |
d0a381dd BF |
3822 | struct xdr_stream *xdr = &resp->xdr; |
3823 | ||
bac966d6 | 3824 | return nfsd4_do_encode_secinfo(xdr, secinfo->sin_exp); |
22b6dee8 MJ |
3825 | } |
3826 | ||
1da177e4 LT |
3827 | /* |
3828 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
3829 | * regardless of the error status. | |
3830 | */ | |
695e12f8 | 3831 | static __be32 |
b37ad28b | 3832 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 3833 | { |
d0a381dd | 3834 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3835 | __be32 *p; |
1da177e4 | 3836 | |
d0a381dd BF |
3837 | p = xdr_reserve_space(xdr, 16); |
3838 | if (!p) | |
3839 | return nfserr_resource; | |
1da177e4 | 3840 | if (nfserr) { |
c373b0a4 BF |
3841 | *p++ = cpu_to_be32(3); |
3842 | *p++ = cpu_to_be32(0); | |
3843 | *p++ = cpu_to_be32(0); | |
3844 | *p++ = cpu_to_be32(0); | |
1da177e4 LT |
3845 | } |
3846 | else { | |
c373b0a4 BF |
3847 | *p++ = cpu_to_be32(3); |
3848 | *p++ = cpu_to_be32(setattr->sa_bmval[0]); | |
3849 | *p++ = cpu_to_be32(setattr->sa_bmval[1]); | |
3850 | *p++ = cpu_to_be32(setattr->sa_bmval[2]); | |
1da177e4 | 3851 | } |
695e12f8 | 3852 | return nfserr; |
1da177e4 LT |
3853 | } |
3854 | ||
695e12f8 | 3855 | static __be32 |
b37ad28b | 3856 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 3857 | { |
d0a381dd | 3858 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3859 | __be32 *p; |
1da177e4 LT |
3860 | |
3861 | if (!nfserr) { | |
d0a381dd BF |
3862 | p = xdr_reserve_space(xdr, 8 + NFS4_VERIFIER_SIZE); |
3863 | if (!p) | |
3864 | return nfserr_resource; | |
0c0c267b BF |
3865 | p = xdr_encode_opaque_fixed(p, &scd->se_clientid, 8); |
3866 | p = xdr_encode_opaque_fixed(p, &scd->se_confirm, | |
3867 | NFS4_VERIFIER_SIZE); | |
1da177e4 LT |
3868 | } |
3869 | else if (nfserr == nfserr_clid_inuse) { | |
d0a381dd BF |
3870 | p = xdr_reserve_space(xdr, 8); |
3871 | if (!p) | |
3872 | return nfserr_resource; | |
c373b0a4 BF |
3873 | *p++ = cpu_to_be32(0); |
3874 | *p++ = cpu_to_be32(0); | |
1da177e4 | 3875 | } |
695e12f8 | 3876 | return nfserr; |
1da177e4 LT |
3877 | } |
3878 | ||
695e12f8 | 3879 | static __be32 |
b37ad28b | 3880 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 3881 | { |
d0a381dd | 3882 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3883 | __be32 *p; |
1da177e4 | 3884 | |
bac966d6 BF |
3885 | p = xdr_reserve_space(xdr, 16); |
3886 | if (!p) | |
3887 | return nfserr_resource; | |
3888 | *p++ = cpu_to_be32(write->wr_bytes_written); | |
3889 | *p++ = cpu_to_be32(write->wr_how_written); | |
3890 | p = xdr_encode_opaque_fixed(p, write->wr_verifier.data, | |
3891 | NFS4_VERIFIER_SIZE); | |
3892 | return 0; | |
1da177e4 LT |
3893 | } |
3894 | ||
2db134eb | 3895 | static __be32 |
57b7b43b | 3896 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3897 | struct nfsd4_exchange_id *exid) |
3898 | { | |
d0a381dd | 3899 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3900 | __be32 *p; |
0733d213 AA |
3901 | char *major_id; |
3902 | char *server_scope; | |
3903 | int major_id_sz; | |
3904 | int server_scope_sz; | |
3905 | uint64_t minor_id = 0; | |
3906 | ||
0733d213 AA |
3907 | major_id = utsname()->nodename; |
3908 | major_id_sz = strlen(major_id); | |
3909 | server_scope = utsname()->nodename; | |
3910 | server_scope_sz = strlen(server_scope); | |
3911 | ||
d0a381dd | 3912 | p = xdr_reserve_space(xdr, |
0733d213 AA |
3913 | 8 /* eir_clientid */ + |
3914 | 4 /* eir_sequenceid */ + | |
3915 | 4 /* eir_flags */ + | |
a8bb84bc | 3916 | 4 /* spr_how */); |
d0a381dd BF |
3917 | if (!p) |
3918 | return nfserr_resource; | |
0733d213 | 3919 | |
0c0c267b | 3920 | p = xdr_encode_opaque_fixed(p, &exid->clientid, 8); |
c373b0a4 BF |
3921 | *p++ = cpu_to_be32(exid->seqid); |
3922 | *p++ = cpu_to_be32(exid->flags); | |
0733d213 | 3923 | |
c373b0a4 | 3924 | *p++ = cpu_to_be32(exid->spa_how); |
a8bb84bc | 3925 | |
57266a6e BF |
3926 | switch (exid->spa_how) { |
3927 | case SP4_NONE: | |
3928 | break; | |
3929 | case SP4_MACH_CRED: | |
3930 | /* spo_must_enforce bitmap: */ | |
bac966d6 | 3931 | nfserr = nfsd4_encode_bitmap(xdr, |
ed941643 AE |
3932 | exid->spo_must_enforce[0], |
3933 | exid->spo_must_enforce[1], | |
3934 | exid->spo_must_enforce[2]); | |
bac966d6 BF |
3935 | if (nfserr) |
3936 | return nfserr; | |
ed941643 | 3937 | /* spo_must_allow bitmap: */ |
bac966d6 | 3938 | nfserr = nfsd4_encode_bitmap(xdr, |
ed941643 AE |
3939 | exid->spo_must_allow[0], |
3940 | exid->spo_must_allow[1], | |
3941 | exid->spo_must_allow[2]); | |
bac966d6 BF |
3942 | if (nfserr) |
3943 | return nfserr; | |
57266a6e BF |
3944 | break; |
3945 | default: | |
3946 | WARN_ON_ONCE(1); | |
3947 | } | |
0733d213 | 3948 | |
d0a381dd | 3949 | p = xdr_reserve_space(xdr, |
a8bb84bc KM |
3950 | 8 /* so_minor_id */ + |
3951 | 4 /* so_major_id.len */ + | |
3952 | (XDR_QUADLEN(major_id_sz) * 4) + | |
3953 | 4 /* eir_server_scope.len */ + | |
3954 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
3955 | 4 /* eir_server_impl_id.count (0) */); | |
d0a381dd BF |
3956 | if (!p) |
3957 | return nfserr_resource; | |
a8bb84bc | 3958 | |
0733d213 | 3959 | /* The server_owner struct */ |
b64c7f3b | 3960 | p = xdr_encode_hyper(p, minor_id); /* Minor id */ |
0733d213 | 3961 | /* major id */ |
0c0c267b | 3962 | p = xdr_encode_opaque(p, major_id, major_id_sz); |
0733d213 AA |
3963 | |
3964 | /* Server scope */ | |
0c0c267b | 3965 | p = xdr_encode_opaque(p, server_scope, server_scope_sz); |
0733d213 AA |
3966 | |
3967 | /* Implementation id */ | |
c373b0a4 | 3968 | *p++ = cpu_to_be32(0); /* zero length nfs_impl_id4 array */ |
0733d213 | 3969 | return 0; |
2db134eb AA |
3970 | } |
3971 | ||
3972 | static __be32 | |
57b7b43b | 3973 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3974 | struct nfsd4_create_session *sess) |
3975 | { | |
d0a381dd | 3976 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3977 | __be32 *p; |
ec6b5d7b | 3978 | |
d0a381dd BF |
3979 | p = xdr_reserve_space(xdr, 24); |
3980 | if (!p) | |
3981 | return nfserr_resource; | |
0c0c267b BF |
3982 | p = xdr_encode_opaque_fixed(p, sess->sessionid.data, |
3983 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
3984 | *p++ = cpu_to_be32(sess->seqid); |
3985 | *p++ = cpu_to_be32(sess->flags); | |
ec6b5d7b | 3986 | |
d0a381dd BF |
3987 | p = xdr_reserve_space(xdr, 28); |
3988 | if (!p) | |
3989 | return nfserr_resource; | |
c373b0a4 BF |
3990 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
3991 | *p++ = cpu_to_be32(sess->fore_channel.maxreq_sz); | |
3992 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_sz); | |
3993 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_cached); | |
3994 | *p++ = cpu_to_be32(sess->fore_channel.maxops); | |
3995 | *p++ = cpu_to_be32(sess->fore_channel.maxreqs); | |
3996 | *p++ = cpu_to_be32(sess->fore_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
3997 | |
3998 | if (sess->fore_channel.nr_rdma_attrs) { | |
d0a381dd BF |
3999 | p = xdr_reserve_space(xdr, 4); |
4000 | if (!p) | |
4001 | return nfserr_resource; | |
c373b0a4 | 4002 | *p++ = cpu_to_be32(sess->fore_channel.rdma_attrs); |
ec6b5d7b AA |
4003 | } |
4004 | ||
d0a381dd BF |
4005 | p = xdr_reserve_space(xdr, 28); |
4006 | if (!p) | |
4007 | return nfserr_resource; | |
c373b0a4 BF |
4008 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
4009 | *p++ = cpu_to_be32(sess->back_channel.maxreq_sz); | |
4010 | *p++ = cpu_to_be32(sess->back_channel.maxresp_sz); | |
4011 | *p++ = cpu_to_be32(sess->back_channel.maxresp_cached); | |
4012 | *p++ = cpu_to_be32(sess->back_channel.maxops); | |
4013 | *p++ = cpu_to_be32(sess->back_channel.maxreqs); | |
4014 | *p++ = cpu_to_be32(sess->back_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
4015 | |
4016 | if (sess->back_channel.nr_rdma_attrs) { | |
d0a381dd BF |
4017 | p = xdr_reserve_space(xdr, 4); |
4018 | if (!p) | |
4019 | return nfserr_resource; | |
c373b0a4 | 4020 | *p++ = cpu_to_be32(sess->back_channel.rdma_attrs); |
ec6b5d7b AA |
4021 | } |
4022 | return 0; | |
2db134eb AA |
4023 | } |
4024 | ||
c47d832b | 4025 | static __be32 |
57b7b43b | 4026 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
4027 | struct nfsd4_sequence *seq) |
4028 | { | |
d0a381dd | 4029 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 4030 | __be32 *p; |
b85d4c01 | 4031 | |
d0a381dd BF |
4032 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 20); |
4033 | if (!p) | |
4034 | return nfserr_resource; | |
0c0c267b BF |
4035 | p = xdr_encode_opaque_fixed(p, seq->sessionid.data, |
4036 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
4037 | *p++ = cpu_to_be32(seq->seqid); |
4038 | *p++ = cpu_to_be32(seq->slotid); | |
b7d7ca35 | 4039 | /* Note slotid's are numbered from zero: */ |
c373b0a4 BF |
4040 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_highest_slotid */ |
4041 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_target_highest_slotid */ | |
4042 | *p++ = cpu_to_be32(seq->status_flags); | |
b85d4c01 | 4043 | |
f5236013 | 4044 | resp->cstate.data_offset = xdr->buf->len; /* DRC cache data pointer */ |
b85d4c01 | 4045 | return 0; |
2db134eb AA |
4046 | } |
4047 | ||
2355c596 | 4048 | static __be32 |
57b7b43b | 4049 | nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
17456804 BS |
4050 | struct nfsd4_test_stateid *test_stateid) |
4051 | { | |
d0a381dd | 4052 | struct xdr_stream *xdr = &resp->xdr; |
03cfb420 | 4053 | struct nfsd4_test_stateid_id *stateid, *next; |
17456804 | 4054 | __be32 *p; |
17456804 | 4055 | |
d0a381dd BF |
4056 | p = xdr_reserve_space(xdr, 4 + (4 * test_stateid->ts_num_ids)); |
4057 | if (!p) | |
4058 | return nfserr_resource; | |
17456804 | 4059 | *p++ = htonl(test_stateid->ts_num_ids); |
17456804 | 4060 | |
03cfb420 | 4061 | list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) { |
02f5fde5 | 4062 | *p++ = stateid->ts_id_status; |
17456804 | 4063 | } |
17456804 | 4064 | |
bac966d6 | 4065 | return 0; |
17456804 BS |
4066 | } |
4067 | ||
9cf514cc CH |
4068 | #ifdef CONFIG_NFSD_PNFS |
4069 | static __be32 | |
4070 | nfsd4_encode_getdeviceinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4071 | struct nfsd4_getdeviceinfo *gdev) | |
4072 | { | |
4073 | struct xdr_stream *xdr = &resp->xdr; | |
f961e3f2 | 4074 | const struct nfsd4_layout_ops *ops; |
9cf514cc CH |
4075 | u32 starting_len = xdr->buf->len, needed_len; |
4076 | __be32 *p; | |
4077 | ||
9cf514cc CH |
4078 | p = xdr_reserve_space(xdr, 4); |
4079 | if (!p) | |
bac966d6 | 4080 | return nfserr_resource; |
9cf514cc CH |
4081 | |
4082 | *p++ = cpu_to_be32(gdev->gd_layout_type); | |
4083 | ||
4084 | /* If maxcount is 0 then just update notifications */ | |
4085 | if (gdev->gd_maxcount != 0) { | |
f961e3f2 | 4086 | ops = nfsd4_layout_ops[gdev->gd_layout_type]; |
9cf514cc CH |
4087 | nfserr = ops->encode_getdeviceinfo(xdr, gdev); |
4088 | if (nfserr) { | |
4089 | /* | |
4090 | * We don't bother to burden the layout drivers with | |
4091 | * enforcing gd_maxcount, just tell the client to | |
4092 | * come back with a bigger buffer if it's not enough. | |
4093 | */ | |
4094 | if (xdr->buf->len + 4 > gdev->gd_maxcount) | |
4095 | goto toosmall; | |
bac966d6 | 4096 | return nfserr; |
9cf514cc CH |
4097 | } |
4098 | } | |
4099 | ||
9cf514cc CH |
4100 | if (gdev->gd_notify_types) { |
4101 | p = xdr_reserve_space(xdr, 4 + 4); | |
4102 | if (!p) | |
bac966d6 | 4103 | return nfserr_resource; |
9cf514cc CH |
4104 | *p++ = cpu_to_be32(1); /* bitmap length */ |
4105 | *p++ = cpu_to_be32(gdev->gd_notify_types); | |
4106 | } else { | |
4107 | p = xdr_reserve_space(xdr, 4); | |
4108 | if (!p) | |
bac966d6 | 4109 | return nfserr_resource; |
9cf514cc CH |
4110 | *p++ = 0; |
4111 | } | |
4112 | ||
bac966d6 | 4113 | return 0; |
9cf514cc CH |
4114 | toosmall: |
4115 | dprintk("%s: maxcount too small\n", __func__); | |
4116 | needed_len = xdr->buf->len + 4 /* notifications */; | |
4117 | xdr_truncate_encode(xdr, starting_len); | |
4118 | p = xdr_reserve_space(xdr, 4); | |
bac966d6 BF |
4119 | if (!p) |
4120 | return nfserr_resource; | |
4121 | *p++ = cpu_to_be32(needed_len); | |
4122 | return nfserr_toosmall; | |
9cf514cc CH |
4123 | } |
4124 | ||
4125 | static __be32 | |
4126 | nfsd4_encode_layoutget(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4127 | struct nfsd4_layoutget *lgp) | |
4128 | { | |
4129 | struct xdr_stream *xdr = &resp->xdr; | |
f961e3f2 | 4130 | const struct nfsd4_layout_ops *ops; |
9cf514cc CH |
4131 | __be32 *p; |
4132 | ||
9cf514cc CH |
4133 | p = xdr_reserve_space(xdr, 36 + sizeof(stateid_opaque_t)); |
4134 | if (!p) | |
bac966d6 | 4135 | return nfserr_resource; |
9cf514cc CH |
4136 | |
4137 | *p++ = cpu_to_be32(1); /* we always set return-on-close */ | |
4138 | *p++ = cpu_to_be32(lgp->lg_sid.si_generation); | |
4139 | p = xdr_encode_opaque_fixed(p, &lgp->lg_sid.si_opaque, | |
4140 | sizeof(stateid_opaque_t)); | |
4141 | ||
4142 | *p++ = cpu_to_be32(1); /* we always return a single layout */ | |
4143 | p = xdr_encode_hyper(p, lgp->lg_seg.offset); | |
4144 | p = xdr_encode_hyper(p, lgp->lg_seg.length); | |
4145 | *p++ = cpu_to_be32(lgp->lg_seg.iomode); | |
4146 | *p++ = cpu_to_be32(lgp->lg_layout_type); | |
4147 | ||
f961e3f2 | 4148 | ops = nfsd4_layout_ops[lgp->lg_layout_type]; |
bac966d6 | 4149 | return ops->encode_layoutget(xdr, lgp); |
9cf514cc CH |
4150 | } |
4151 | ||
4152 | static __be32 | |
4153 | nfsd4_encode_layoutcommit(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4154 | struct nfsd4_layoutcommit *lcp) | |
4155 | { | |
4156 | struct xdr_stream *xdr = &resp->xdr; | |
4157 | __be32 *p; | |
4158 | ||
9cf514cc CH |
4159 | p = xdr_reserve_space(xdr, 4); |
4160 | if (!p) | |
4161 | return nfserr_resource; | |
4162 | *p++ = cpu_to_be32(lcp->lc_size_chg); | |
4163 | if (lcp->lc_size_chg) { | |
4164 | p = xdr_reserve_space(xdr, 8); | |
4165 | if (!p) | |
4166 | return nfserr_resource; | |
4167 | p = xdr_encode_hyper(p, lcp->lc_newsize); | |
4168 | } | |
4169 | ||
bac966d6 | 4170 | return 0; |
9cf514cc CH |
4171 | } |
4172 | ||
4173 | static __be32 | |
4174 | nfsd4_encode_layoutreturn(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4175 | struct nfsd4_layoutreturn *lrp) | |
4176 | { | |
4177 | struct xdr_stream *xdr = &resp->xdr; | |
4178 | __be32 *p; | |
4179 | ||
9cf514cc CH |
4180 | p = xdr_reserve_space(xdr, 4); |
4181 | if (!p) | |
4182 | return nfserr_resource; | |
4183 | *p++ = cpu_to_be32(lrp->lrs_present); | |
4184 | if (lrp->lrs_present) | |
376675da | 4185 | return nfsd4_encode_stateid(xdr, &lrp->lr_sid); |
bac966d6 | 4186 | return 0; |
9cf514cc CH |
4187 | } |
4188 | #endif /* CONFIG_NFSD_PNFS */ | |
4189 | ||
29ae7f9d AS |
4190 | static __be32 |
4191 | nfsd42_encode_write_res(struct nfsd4_compoundres *resp, struct nfsd42_write_res *write) | |
4192 | { | |
4193 | __be32 *p; | |
4194 | ||
4195 | p = xdr_reserve_space(&resp->xdr, 4 + 8 + 4 + NFS4_VERIFIER_SIZE); | |
4196 | if (!p) | |
4197 | return nfserr_resource; | |
4198 | ||
4199 | *p++ = cpu_to_be32(0); | |
4200 | p = xdr_encode_hyper(p, write->wr_bytes_written); | |
4201 | *p++ = cpu_to_be32(write->wr_stable_how); | |
4202 | p = xdr_encode_opaque_fixed(p, write->wr_verifier.data, | |
4203 | NFS4_VERIFIER_SIZE); | |
4204 | return nfs_ok; | |
4205 | } | |
4206 | ||
4207 | static __be32 | |
4208 | nfsd4_encode_copy(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4209 | struct nfsd4_copy *copy) | |
4210 | { | |
4211 | __be32 *p; | |
4212 | ||
bac966d6 BF |
4213 | nfserr = nfsd42_encode_write_res(resp, ©->cp_res); |
4214 | if (nfserr) | |
4215 | return nfserr; | |
29ae7f9d | 4216 | |
bac966d6 BF |
4217 | p = xdr_reserve_space(&resp->xdr, 4 + 4); |
4218 | *p++ = cpu_to_be32(copy->cp_consecutive); | |
4219 | *p++ = cpu_to_be32(copy->cp_synchronous); | |
4220 | return 0; | |
29ae7f9d AS |
4221 | } |
4222 | ||
24bab491 AS |
4223 | static __be32 |
4224 | nfsd4_encode_seek(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4225 | struct nfsd4_seek *seek) | |
4226 | { | |
4227 | __be32 *p; | |
4228 | ||
24bab491 AS |
4229 | p = xdr_reserve_space(&resp->xdr, 4 + 8); |
4230 | *p++ = cpu_to_be32(seek->seek_eof); | |
4231 | p = xdr_encode_hyper(p, seek->seek_pos); | |
4232 | ||
bac966d6 | 4233 | return 0; |
24bab491 AS |
4234 | } |
4235 | ||
695e12f8 BH |
4236 | static __be32 |
4237 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
4238 | { | |
4239 | return nfserr; | |
4240 | } | |
4241 | ||
4242 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
4243 | ||
2db134eb AA |
4244 | /* |
4245 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
4246 | * since we don't need to filter out obsolete ops as this is | |
4247 | * done in the decoding phase. | |
4248 | */ | |
c1df609d | 4249 | static const nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
4250 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
4251 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
4252 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
4253 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
4254 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
4255 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
4256 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
4257 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
4258 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
4259 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
4260 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
4261 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
4262 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
4263 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
4264 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
4265 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 4266 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
4267 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
4268 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
4269 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4270 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4271 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4272 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
4273 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
4274 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
4275 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
4276 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
4277 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
4278 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4279 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4280 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
4281 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
4282 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
4283 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
4284 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
4285 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
4286 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
4287 | |
4288 | /* NFSv4.1 operations */ | |
4289 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
1d1bc8f2 | 4290 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
2db134eb AA |
4291 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
4292 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
43212cc7 KM |
4293 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_noop, |
4294 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb | 4295 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
9cf514cc CH |
4296 | #ifdef CONFIG_NFSD_PNFS |
4297 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_getdeviceinfo, | |
4298 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
4299 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_layoutcommit, | |
4300 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_layoutget, | |
4301 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_layoutreturn, | |
4302 | #else | |
2db134eb AA |
4303 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, |
4304 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
4305 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
4306 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
4307 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
9cf514cc | 4308 | #endif |
22b6dee8 | 4309 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
2db134eb AA |
4310 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
4311 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
17456804 | 4312 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, |
2db134eb AA |
4313 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
4314 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
4315 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
87a15a80 AS |
4316 | |
4317 | /* NFSv4.2 operations */ | |
4318 | [OP_ALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, | |
29ae7f9d | 4319 | [OP_COPY] = (nfsd4_enc)nfsd4_encode_copy, |
87a15a80 AS |
4320 | [OP_COPY_NOTIFY] = (nfsd4_enc)nfsd4_encode_noop, |
4321 | [OP_DEALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, | |
4322 | [OP_IO_ADVISE] = (nfsd4_enc)nfsd4_encode_noop, | |
4323 | [OP_LAYOUTERROR] = (nfsd4_enc)nfsd4_encode_noop, | |
4324 | [OP_LAYOUTSTATS] = (nfsd4_enc)nfsd4_encode_noop, | |
4325 | [OP_OFFLOAD_CANCEL] = (nfsd4_enc)nfsd4_encode_noop, | |
4326 | [OP_OFFLOAD_STATUS] = (nfsd4_enc)nfsd4_encode_noop, | |
4327 | [OP_READ_PLUS] = (nfsd4_enc)nfsd4_encode_noop, | |
24bab491 | 4328 | [OP_SEEK] = (nfsd4_enc)nfsd4_encode_seek, |
87a15a80 | 4329 | [OP_WRITE_SAME] = (nfsd4_enc)nfsd4_encode_noop, |
ffa0160a | 4330 | [OP_CLONE] = (nfsd4_enc)nfsd4_encode_noop, |
695e12f8 BH |
4331 | }; |
4332 | ||
496c262c | 4333 | /* |
a8095f7e BF |
4334 | * Calculate whether we still have space to encode repsize bytes. |
4335 | * There are two considerations: | |
4336 | * - For NFS versions >=4.1, the size of the reply must stay within | |
4337 | * session limits | |
4338 | * - For all NFS versions, we must stay within limited preallocated | |
4339 | * buffer space. | |
496c262c | 4340 | * |
a8095f7e BF |
4341 | * This is called before the operation is processed, so can only provide |
4342 | * an upper estimate. For some nonidempotent operations (such as | |
4343 | * getattr), it's not necessarily a problem if that estimate is wrong, | |
4344 | * as we can fail it after processing without significant side effects. | |
496c262c | 4345 | */ |
a8095f7e | 4346 | __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 respsize) |
496c262c | 4347 | { |
67492c99 | 4348 | struct xdr_buf *buf = &resp->rqstp->rq_res; |
47ee5298 | 4349 | struct nfsd4_slot *slot = resp->cstate.slot; |
496c262c | 4350 | |
47ee5298 BF |
4351 | if (buf->len + respsize <= buf->buflen) |
4352 | return nfs_ok; | |
4353 | if (!nfsd4_has_session(&resp->cstate)) | |
ea8d7720 | 4354 | return nfserr_resource; |
47ee5298 BF |
4355 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) { |
4356 | WARN_ON_ONCE(1); | |
4357 | return nfserr_rep_too_big_to_cache; | |
ea8d7720 | 4358 | } |
47ee5298 | 4359 | return nfserr_rep_too_big; |
496c262c AA |
4360 | } |
4361 | ||
1da177e4 LT |
4362 | void |
4363 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
4364 | { | |
082d4bd7 | 4365 | struct xdr_stream *xdr = &resp->xdr; |
9411b1d4 | 4366 | struct nfs4_stateowner *so = resp->cstate.replay_owner; |
5f4ab945 | 4367 | struct svc_rqst *rqstp = resp->rqstp; |
34b1744c | 4368 | const struct nfsd4_operation *opdesc = op->opdesc; |
082d4bd7 | 4369 | int post_err_offset; |
07d1f802 | 4370 | nfsd4_enc encoder; |
bc749ca4 | 4371 | __be32 *p; |
1da177e4 | 4372 | |
d0a381dd BF |
4373 | p = xdr_reserve_space(xdr, 8); |
4374 | if (!p) { | |
4375 | WARN_ON_ONCE(1); | |
4376 | return; | |
4377 | } | |
c373b0a4 | 4378 | *p++ = cpu_to_be32(op->opnum); |
082d4bd7 | 4379 | post_err_offset = xdr->buf->len; |
1da177e4 | 4380 | |
695e12f8 BH |
4381 | if (op->opnum == OP_ILLEGAL) |
4382 | goto status; | |
b7571e4c BF |
4383 | if (op->status && opdesc && |
4384 | !(opdesc->op_flags & OP_NONTRIVIAL_ERROR_ENCODE)) | |
4385 | goto status; | |
695e12f8 BH |
4386 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || |
4387 | !nfsd4_enc_ops[op->opnum]); | |
07d1f802 BF |
4388 | encoder = nfsd4_enc_ops[op->opnum]; |
4389 | op->status = encoder(resp, op->status, &op->u); | |
34b1744c BF |
4390 | if (opdesc && opdesc->op_release) |
4391 | opdesc->op_release(&op->u); | |
2825a7f9 BF |
4392 | xdr_commit_encode(xdr); |
4393 | ||
067e1ace | 4394 | /* nfsd4_check_resp_size guarantees enough room for error status */ |
5f4ab945 BF |
4395 | if (!op->status) { |
4396 | int space_needed = 0; | |
4397 | if (!nfsd4_last_compound_op(rqstp)) | |
4398 | space_needed = COMPOUND_ERR_SLACK_SPACE; | |
4399 | op->status = nfsd4_check_resp_size(resp, space_needed); | |
4400 | } | |
c8f13d97 BF |
4401 | if (op->status == nfserr_resource && nfsd4_has_session(&resp->cstate)) { |
4402 | struct nfsd4_slot *slot = resp->cstate.slot; | |
4403 | ||
4404 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) | |
4405 | op->status = nfserr_rep_too_big_to_cache; | |
4406 | else | |
4407 | op->status = nfserr_rep_too_big; | |
4408 | } | |
07d1f802 BF |
4409 | if (op->status == nfserr_resource || |
4410 | op->status == nfserr_rep_too_big || | |
4411 | op->status == nfserr_rep_too_big_to_cache) { | |
4412 | /* | |
4413 | * The operation may have already been encoded or | |
4414 | * partially encoded. No op returns anything additional | |
4415 | * in the case of one of these three errors, so we can | |
4416 | * just truncate back to after the status. But it's a | |
4417 | * bug if we had to do this on a non-idempotent op: | |
4418 | */ | |
4419 | warn_on_nonidempotent_op(op); | |
082d4bd7 | 4420 | xdr_truncate_encode(xdr, post_err_offset); |
07d1f802 | 4421 | } |
9411b1d4 | 4422 | if (so) { |
082d4bd7 BF |
4423 | int len = xdr->buf->len - post_err_offset; |
4424 | ||
9411b1d4 | 4425 | so->so_replay.rp_status = op->status; |
082d4bd7 BF |
4426 | so->so_replay.rp_buflen = len; |
4427 | read_bytes_from_xdr_buf(xdr->buf, post_err_offset, | |
4428 | so->so_replay.rp_buf, len); | |
9411b1d4 | 4429 | } |
695e12f8 | 4430 | status: |
082d4bd7 BF |
4431 | /* Note that op->status is already in network byte order: */ |
4432 | write_bytes_to_xdr_buf(xdr->buf, post_err_offset - 4, &op->status, 4); | |
1da177e4 LT |
4433 | } |
4434 | ||
4435 | /* | |
4436 | * Encode the reply stored in the stateowner reply cache | |
4437 | * | |
4438 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
4439 | * previously sent already encoded operation. | |
1da177e4 LT |
4440 | */ |
4441 | void | |
d0a381dd | 4442 | nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op) |
1da177e4 | 4443 | { |
bc749ca4 | 4444 | __be32 *p; |
1da177e4 LT |
4445 | struct nfs4_replay *rp = op->replay; |
4446 | ||
4447 | BUG_ON(!rp); | |
4448 | ||
d0a381dd BF |
4449 | p = xdr_reserve_space(xdr, 8 + rp->rp_buflen); |
4450 | if (!p) { | |
4451 | WARN_ON_ONCE(1); | |
4452 | return; | |
4453 | } | |
c373b0a4 | 4454 | *p++ = cpu_to_be32(op->opnum); |
1da177e4 | 4455 | *p++ = rp->rp_status; /* already xdr'ed */ |
1da177e4 | 4456 | |
0c0c267b | 4457 | p = xdr_encode_opaque_fixed(p, rp->rp_buf, rp->rp_buflen); |
1da177e4 LT |
4458 | } |
4459 | ||
1da177e4 | 4460 | int |
63f8de37 | 4461 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 LT |
4462 | { |
4463 | return xdr_ressize_check(rqstp, p); | |
4464 | } | |
4465 | ||
8537488b | 4466 | void nfsd4_release_compoundargs(struct svc_rqst *rqstp) |
1da177e4 | 4467 | { |
3e98abff BF |
4468 | struct nfsd4_compoundargs *args = rqstp->rq_argp; |
4469 | ||
1da177e4 LT |
4470 | if (args->ops != args->iops) { |
4471 | kfree(args->ops); | |
4472 | args->ops = args->iops; | |
4473 | } | |
f99d49ad JJ |
4474 | kfree(args->tmpp); |
4475 | args->tmpp = NULL; | |
1da177e4 | 4476 | while (args->to_free) { |
d5e23383 | 4477 | struct svcxdr_tmpbuf *tb = args->to_free; |
1da177e4 | 4478 | args->to_free = tb->next; |
1da177e4 LT |
4479 | kfree(tb); |
4480 | } | |
4481 | } | |
4482 | ||
4483 | int | |
026fec7e | 4484 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 4485 | { |
026fec7e CH |
4486 | struct nfsd4_compoundargs *args = rqstp->rq_argp; |
4487 | ||
e874f9f8 JL |
4488 | if (rqstp->rq_arg.head[0].iov_len % 4) { |
4489 | /* client is nuts */ | |
4490 | dprintk("%s: compound not properly padded! (peeraddr=%pISc xid=0x%x)", | |
4491 | __func__, svc_addr(rqstp), be32_to_cpu(rqstp->rq_xid)); | |
4492 | return 0; | |
4493 | } | |
1da177e4 LT |
4494 | args->p = p; |
4495 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
4496 | args->pagelist = rqstp->rq_arg.pages; | |
4497 | args->pagelen = rqstp->rq_arg.page_len; | |
eae03e2a | 4498 | args->tail = false; |
1da177e4 LT |
4499 | args->tmpp = NULL; |
4500 | args->to_free = NULL; | |
4501 | args->ops = args->iops; | |
4502 | args->rqstp = rqstp; | |
4503 | ||
3e98abff | 4504 | return !nfsd4_decode_compound(args); |
1da177e4 LT |
4505 | } |
4506 | ||
4507 | int | |
63f8de37 | 4508 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 LT |
4509 | { |
4510 | /* | |
4511 | * All that remains is to write the tag and operation count... | |
4512 | */ | |
63f8de37 | 4513 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
6ac90391 BF |
4514 | struct xdr_buf *buf = resp->xdr.buf; |
4515 | ||
4516 | WARN_ON_ONCE(buf->len != buf->head[0].iov_len + buf->page_len + | |
4517 | buf->tail[0].iov_len); | |
dd97fdde | 4518 | |
2825a7f9 BF |
4519 | rqstp->rq_next_page = resp->xdr.page_ptr + 1; |
4520 | ||
1da177e4 LT |
4521 | p = resp->tagp; |
4522 | *p++ = htonl(resp->taglen); | |
4523 | memcpy(p, resp->tag, resp->taglen); | |
4524 | p += XDR_QUADLEN(resp->taglen); | |
4525 | *p++ = htonl(resp->opcnt); | |
4526 | ||
b607664e | 4527 | nfsd4_sequence_done(resp); |
1da177e4 LT |
4528 | return 1; |
4529 | } | |
4530 | ||
4531 | /* | |
4532 | * Local variables: | |
4533 | * c-basic-offset: 8 | |
4534 | * End: | |
4535 | */ |