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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 | ||
5a0e3ad6 | 36 | #include <linux/slab.h> |
1da177e4 | 37 | #include <linux/namei.h> |
341eb184 | 38 | #include <linux/statfs.h> |
0733d213 | 39 | #include <linux/utsname.h> |
17456804 | 40 | #include <linux/pagemap.h> |
4796f457 | 41 | #include <linux/sunrpc/svcauth_gss.h> |
9a74af21 | 42 | |
2ca72e17 BF |
43 | #include "idmap.h" |
44 | #include "acl.h" | |
9a74af21 | 45 | #include "xdr4.h" |
0a3adade | 46 | #include "vfs.h" |
17456804 | 47 | #include "state.h" |
1091006c | 48 | #include "cache.h" |
3d733711 | 49 | #include "netns.h" |
9cf514cc | 50 | #include "pnfs.h" |
2ca72e17 | 51 | |
18032ca0 DQ |
52 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
53 | #include <linux/security.h> | |
54 | #endif | |
55 | ||
56 | ||
1da177e4 LT |
57 | #define NFSDDBG_FACILITY NFSDDBG_XDR |
58 | ||
42ca0993 BF |
59 | /* |
60 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing | |
61 | * directory in order to indicate to the client that a filesystem boundary is present | |
62 | * We use a fixed fsid for a referral | |
63 | */ | |
64 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL | |
65 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL | |
66 | ||
b37ad28b | 67 | static __be32 |
a36b1725 | 68 | check_filename(char *str, int len) |
1da177e4 LT |
69 | { |
70 | int i; | |
71 | ||
72 | if (len == 0) | |
73 | return nfserr_inval; | |
74 | if (isdotent(str, len)) | |
a36b1725 | 75 | return nfserr_badname; |
1da177e4 LT |
76 | for (i = 0; i < len; i++) |
77 | if (str[i] == '/') | |
a36b1725 | 78 | return nfserr_badname; |
1da177e4 LT |
79 | return 0; |
80 | } | |
81 | ||
1da177e4 | 82 | #define DECODE_HEAD \ |
2ebbc012 | 83 | __be32 *p; \ |
b37ad28b | 84 | __be32 status |
1da177e4 LT |
85 | #define DECODE_TAIL \ |
86 | status = 0; \ | |
87 | out: \ | |
88 | return status; \ | |
89 | xdr_error: \ | |
817cb9d4 CL |
90 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
91 | __FILE__, __LINE__); \ | |
1da177e4 LT |
92 | status = nfserr_bad_xdr; \ |
93 | goto out | |
94 | ||
1da177e4 LT |
95 | #define READMEM(x,nbytes) do { \ |
96 | x = (char *)p; \ | |
97 | p += XDR_QUADLEN(nbytes); \ | |
98 | } while (0) | |
99 | #define SAVEMEM(x,nbytes) do { \ | |
100 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
101 | savemem(argp, p, nbytes) : \ | |
102 | (char *)p)) { \ | |
817cb9d4 CL |
103 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
104 | __FILE__, __LINE__); \ | |
1da177e4 LT |
105 | goto xdr_error; \ |
106 | } \ | |
107 | p += XDR_QUADLEN(nbytes); \ | |
108 | } while (0) | |
109 | #define COPYMEM(x,nbytes) do { \ | |
110 | memcpy((x), p, nbytes); \ | |
111 | p += XDR_QUADLEN(nbytes); \ | |
112 | } while (0) | |
113 | ||
114 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ | |
115 | #define READ_BUF(nbytes) do { \ | |
116 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ | |
117 | p = argp->p; \ | |
118 | argp->p += XDR_QUADLEN(nbytes); \ | |
119 | } else if (!(p = read_buf(argp, nbytes))) { \ | |
817cb9d4 CL |
120 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
121 | __FILE__, __LINE__); \ | |
1da177e4 LT |
122 | goto xdr_error; \ |
123 | } \ | |
124 | } while (0) | |
125 | ||
590b7431 BF |
126 | static void next_decode_page(struct nfsd4_compoundargs *argp) |
127 | { | |
590b7431 | 128 | argp->p = page_address(argp->pagelist[0]); |
365da4ad | 129 | argp->pagelist++; |
590b7431 BF |
130 | if (argp->pagelen < PAGE_SIZE) { |
131 | argp->end = argp->p + (argp->pagelen>>2); | |
132 | argp->pagelen = 0; | |
133 | } else { | |
134 | argp->end = argp->p + (PAGE_SIZE>>2); | |
135 | argp->pagelen -= PAGE_SIZE; | |
136 | } | |
137 | } | |
138 | ||
ca2a05aa | 139 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
1da177e4 LT |
140 | { |
141 | /* We want more bytes than seem to be available. | |
142 | * Maybe we need a new page, maybe we have just run out | |
143 | */ | |
ca2a05aa | 144 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
2ebbc012 | 145 | __be32 *p; |
1da177e4 LT |
146 | if (avail + argp->pagelen < nbytes) |
147 | return NULL; | |
148 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ | |
149 | return NULL; | |
150 | /* ok, we can do it with the current plus the next page */ | |
151 | if (nbytes <= sizeof(argp->tmp)) | |
152 | p = argp->tmp; | |
153 | else { | |
f99d49ad | 154 | kfree(argp->tmpp); |
1da177e4 LT |
155 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
156 | if (!p) | |
157 | return NULL; | |
158 | ||
159 | } | |
ca2a05aa BF |
160 | /* |
161 | * The following memcpy is safe because read_buf is always | |
162 | * called with nbytes > avail, and the two cases above both | |
163 | * guarantee p points to at least nbytes bytes. | |
164 | */ | |
1da177e4 | 165 | memcpy(p, argp->p, avail); |
590b7431 | 166 | next_decode_page(argp); |
1da177e4 LT |
167 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); |
168 | argp->p += XDR_QUADLEN(nbytes - avail); | |
169 | return p; | |
170 | } | |
171 | ||
60adfc50 AA |
172 | static int zero_clientid(clientid_t *clid) |
173 | { | |
174 | return (clid->cl_boot == 0) && (clid->cl_id == 0); | |
175 | } | |
176 | ||
2d8498db | 177 | /** |
d5e23383 | 178 | * svcxdr_tmpalloc - allocate memory to be freed after compound processing |
ce043ac8 BF |
179 | * @argp: NFSv4 compound argument structure |
180 | * @p: pointer to be freed (with kfree()) | |
2d8498db CH |
181 | * |
182 | * Marks @p to be freed when processing the compound operation | |
183 | * described in @argp finishes. | |
184 | */ | |
d5e23383 BF |
185 | static void * |
186 | svcxdr_tmpalloc(struct nfsd4_compoundargs *argp, u32 len) | |
1da177e4 | 187 | { |
d5e23383 | 188 | struct svcxdr_tmpbuf *tb; |
1da177e4 | 189 | |
d5e23383 | 190 | tb = kmalloc(sizeof(*tb) + len, GFP_KERNEL); |
1da177e4 | 191 | if (!tb) |
d5e23383 | 192 | return NULL; |
1da177e4 LT |
193 | tb->next = argp->to_free; |
194 | argp->to_free = tb; | |
d5e23383 | 195 | return tb->buf; |
1da177e4 LT |
196 | } |
197 | ||
29c353b3 BF |
198 | /* |
199 | * For xdr strings that need to be passed to other kernel api's | |
200 | * as null-terminated strings. | |
201 | * | |
202 | * Note null-terminating in place usually isn't safe since the | |
203 | * buffer might end on a page boundary. | |
204 | */ | |
205 | static char * | |
206 | svcxdr_dupstr(struct nfsd4_compoundargs *argp, void *buf, u32 len) | |
207 | { | |
d5e23383 | 208 | char *p = svcxdr_tmpalloc(argp, len + 1); |
29c353b3 BF |
209 | |
210 | if (!p) | |
211 | return NULL; | |
212 | memcpy(p, buf, len); | |
213 | p[len] = '\0'; | |
29c353b3 | 214 | return p; |
1da177e4 LT |
215 | } |
216 | ||
2d8498db CH |
217 | /** |
218 | * savemem - duplicate a chunk of memory for later processing | |
219 | * @argp: NFSv4 compound argument structure to be freed with | |
220 | * @p: pointer to be duplicated | |
221 | * @nbytes: length to be duplicated | |
222 | * | |
223 | * Returns a pointer to a copy of @nbytes bytes of memory at @p | |
224 | * that are preserved until processing of the NFSv4 compound | |
225 | * operation described by @argp finishes. | |
226 | */ | |
2ebbc012 | 227 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
1da177e4 | 228 | { |
d5e23383 BF |
229 | void *ret; |
230 | ||
231 | ret = svcxdr_tmpalloc(argp, nbytes); | |
232 | if (!ret) | |
1da177e4 | 233 | return NULL; |
d5e23383 BF |
234 | memcpy(ret, p, nbytes); |
235 | return ret; | |
1da177e4 LT |
236 | } |
237 | ||
4c94e13e CH |
238 | /* |
239 | * We require the high 32 bits of 'seconds' to be 0, and | |
240 | * we ignore all 32 bits of 'nseconds'. | |
241 | */ | |
242 | static __be32 | |
243 | nfsd4_decode_time(struct nfsd4_compoundargs *argp, struct timespec *tv) | |
244 | { | |
245 | DECODE_HEAD; | |
246 | u64 sec; | |
247 | ||
248 | READ_BUF(12); | |
249 | p = xdr_decode_hyper(p, &sec); | |
250 | tv->tv_sec = sec; | |
251 | tv->tv_nsec = be32_to_cpup(p++); | |
252 | if (tv->tv_nsec >= (u32)1000000000) | |
253 | return nfserr_inval; | |
254 | ||
255 | DECODE_TAIL; | |
256 | } | |
257 | ||
b37ad28b | 258 | static __be32 |
1da177e4 LT |
259 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
260 | { | |
261 | u32 bmlen; | |
262 | DECODE_HEAD; | |
263 | ||
264 | bmval[0] = 0; | |
265 | bmval[1] = 0; | |
7e705706 | 266 | bmval[2] = 0; |
1da177e4 LT |
267 | |
268 | READ_BUF(4); | |
06553991 | 269 | bmlen = be32_to_cpup(p++); |
1da177e4 LT |
270 | if (bmlen > 1000) |
271 | goto xdr_error; | |
272 | ||
273 | READ_BUF(bmlen << 2); | |
274 | if (bmlen > 0) | |
06553991 | 275 | bmval[0] = be32_to_cpup(p++); |
1da177e4 | 276 | if (bmlen > 1) |
06553991 | 277 | bmval[1] = be32_to_cpup(p++); |
7e705706 | 278 | if (bmlen > 2) |
06553991 | 279 | bmval[2] = be32_to_cpup(p++); |
1da177e4 LT |
280 | |
281 | DECODE_TAIL; | |
282 | } | |
283 | ||
b37ad28b | 284 | static __be32 |
3c8e0316 | 285 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, |
18032ca0 DQ |
286 | struct iattr *iattr, struct nfs4_acl **acl, |
287 | struct xdr_netobj *label) | |
1da177e4 LT |
288 | { |
289 | int expected_len, len = 0; | |
290 | u32 dummy32; | |
291 | char *buf; | |
292 | ||
293 | DECODE_HEAD; | |
294 | iattr->ia_valid = 0; | |
295 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
296 | return status; | |
297 | ||
1da177e4 | 298 | READ_BUF(4); |
06553991 | 299 | expected_len = be32_to_cpup(p++); |
1da177e4 LT |
300 | |
301 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
302 | READ_BUF(8); | |
303 | len += 8; | |
542d1ab3 | 304 | p = xdr_decode_hyper(p, &iattr->ia_size); |
1da177e4 LT |
305 | iattr->ia_valid |= ATTR_SIZE; |
306 | } | |
307 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
64a817cf | 308 | u32 nace; |
28e05dd8 | 309 | struct nfs4_ace *ace; |
1da177e4 LT |
310 | |
311 | READ_BUF(4); len += 4; | |
06553991 | 312 | nace = be32_to_cpup(p++); |
1da177e4 | 313 | |
28e05dd8 | 314 | if (nace > NFS4_ACL_MAX) |
798df338 | 315 | return nfserr_fbig; |
28e05dd8 | 316 | |
d5e23383 | 317 | *acl = svcxdr_tmpalloc(argp, nfs4_acl_bytes(nace)); |
eba1c99c KM |
318 | if (*acl == NULL) |
319 | return nfserr_jukebox; | |
320 | ||
28e05dd8 BF |
321 | (*acl)->naces = nace; |
322 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { | |
1da177e4 | 323 | READ_BUF(16); len += 16; |
06553991 BF |
324 | ace->type = be32_to_cpup(p++); |
325 | ace->flag = be32_to_cpup(p++); | |
326 | ace->access_mask = be32_to_cpup(p++); | |
327 | dummy32 = be32_to_cpup(p++); | |
1da177e4 LT |
328 | READ_BUF(dummy32); |
329 | len += XDR_QUADLEN(dummy32) << 2; | |
330 | READMEM(buf, dummy32); | |
28e05dd8 | 331 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
3c726023 | 332 | status = nfs_ok; |
28e05dd8 | 333 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ab8e4aee | 334 | ; |
28e05dd8 | 335 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
3c726023 | 336 | status = nfsd_map_name_to_gid(argp->rqstp, |
ab8e4aee | 337 | buf, dummy32, &ace->who_gid); |
1da177e4 | 338 | else |
3c726023 | 339 | status = nfsd_map_name_to_uid(argp->rqstp, |
ab8e4aee | 340 | buf, dummy32, &ace->who_uid); |
3c726023 BF |
341 | if (status) |
342 | return status; | |
1da177e4 LT |
343 | } |
344 | } else | |
345 | *acl = NULL; | |
346 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
347 | READ_BUF(4); | |
348 | len += 4; | |
06553991 | 349 | iattr->ia_mode = be32_to_cpup(p++); |
1da177e4 LT |
350 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); |
351 | iattr->ia_valid |= ATTR_MODE; | |
352 | } | |
353 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
354 | READ_BUF(4); | |
355 | len += 4; | |
06553991 | 356 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
357 | READ_BUF(dummy32); |
358 | len += (XDR_QUADLEN(dummy32) << 2); | |
359 | READMEM(buf, dummy32); | |
47c85291 N |
360 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
361 | return status; | |
1da177e4 LT |
362 | iattr->ia_valid |= ATTR_UID; |
363 | } | |
364 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
365 | READ_BUF(4); | |
366 | len += 4; | |
06553991 | 367 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
368 | READ_BUF(dummy32); |
369 | len += (XDR_QUADLEN(dummy32) << 2); | |
370 | READMEM(buf, dummy32); | |
47c85291 N |
371 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
372 | return status; | |
1da177e4 LT |
373 | iattr->ia_valid |= ATTR_GID; |
374 | } | |
375 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
376 | READ_BUF(4); | |
377 | len += 4; | |
06553991 | 378 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
379 | switch (dummy32) { |
380 | case NFS4_SET_TO_CLIENT_TIME: | |
1da177e4 | 381 | len += 12; |
4c94e13e CH |
382 | status = nfsd4_decode_time(argp, &iattr->ia_atime); |
383 | if (status) | |
384 | return status; | |
1da177e4 LT |
385 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); |
386 | break; | |
387 | case NFS4_SET_TO_SERVER_TIME: | |
388 | iattr->ia_valid |= ATTR_ATIME; | |
389 | break; | |
390 | default: | |
391 | goto xdr_error; | |
392 | } | |
393 | } | |
1da177e4 LT |
394 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
395 | READ_BUF(4); | |
396 | len += 4; | |
06553991 | 397 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
398 | switch (dummy32) { |
399 | case NFS4_SET_TO_CLIENT_TIME: | |
1da177e4 | 400 | len += 12; |
4c94e13e CH |
401 | status = nfsd4_decode_time(argp, &iattr->ia_mtime); |
402 | if (status) | |
403 | return status; | |
1da177e4 LT |
404 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); |
405 | break; | |
406 | case NFS4_SET_TO_SERVER_TIME: | |
407 | iattr->ia_valid |= ATTR_MTIME; | |
408 | break; | |
409 | default: | |
410 | goto xdr_error; | |
411 | } | |
412 | } | |
18032ca0 DQ |
413 | |
414 | label->len = 0; | |
415 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL | |
416 | if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) { | |
417 | READ_BUF(4); | |
418 | len += 4; | |
06553991 | 419 | dummy32 = be32_to_cpup(p++); /* lfs: we don't use it */ |
18032ca0 DQ |
420 | READ_BUF(4); |
421 | len += 4; | |
06553991 | 422 | dummy32 = be32_to_cpup(p++); /* pi: we don't use it either */ |
18032ca0 DQ |
423 | READ_BUF(4); |
424 | len += 4; | |
06553991 | 425 | dummy32 = be32_to_cpup(p++); |
18032ca0 DQ |
426 | READ_BUF(dummy32); |
427 | if (dummy32 > NFSD4_MAX_SEC_LABEL_LEN) | |
428 | return nfserr_badlabel; | |
429 | len += (XDR_QUADLEN(dummy32) << 2); | |
430 | READMEM(buf, dummy32); | |
29c353b3 BF |
431 | label->len = dummy32; |
432 | label->data = svcxdr_dupstr(argp, buf, dummy32); | |
18032ca0 DQ |
433 | if (!label->data) |
434 | return nfserr_jukebox; | |
18032ca0 DQ |
435 | } |
436 | #endif | |
437 | ||
3c8e0316 YZ |
438 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
439 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 | |
440 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) | |
441 | READ_BUF(expected_len - len); | |
442 | else if (len != expected_len) | |
1da177e4 LT |
443 | goto xdr_error; |
444 | ||
445 | DECODE_TAIL; | |
1da177e4 LT |
446 | } |
447 | ||
e31a1b66 BH |
448 | static __be32 |
449 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
450 | { | |
451 | DECODE_HEAD; | |
452 | ||
453 | READ_BUF(sizeof(stateid_t)); | |
06553991 | 454 | sid->si_generation = be32_to_cpup(p++); |
e31a1b66 BH |
455 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); |
456 | ||
457 | DECODE_TAIL; | |
458 | } | |
459 | ||
b37ad28b | 460 | static __be32 |
1da177e4 LT |
461 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
462 | { | |
463 | DECODE_HEAD; | |
464 | ||
465 | READ_BUF(4); | |
06553991 | 466 | access->ac_req_access = be32_to_cpup(p++); |
1da177e4 LT |
467 | |
468 | DECODE_TAIL; | |
469 | } | |
470 | ||
acb2887e BF |
471 | static __be32 nfsd4_decode_cb_sec(struct nfsd4_compoundargs *argp, struct nfsd4_cb_sec *cbs) |
472 | { | |
473 | DECODE_HEAD; | |
12fc3e92 | 474 | u32 dummy, uid, gid; |
acb2887e BF |
475 | char *machine_name; |
476 | int i; | |
477 | int nr_secflavs; | |
478 | ||
479 | /* callback_sec_params4 */ | |
480 | READ_BUF(4); | |
06553991 | 481 | nr_secflavs = be32_to_cpup(p++); |
57569a70 BF |
482 | if (nr_secflavs) |
483 | cbs->flavor = (u32)(-1); | |
484 | else | |
485 | /* Is this legal? Be generous, take it to mean AUTH_NONE: */ | |
486 | cbs->flavor = 0; | |
acb2887e BF |
487 | for (i = 0; i < nr_secflavs; ++i) { |
488 | READ_BUF(4); | |
06553991 | 489 | dummy = be32_to_cpup(p++); |
acb2887e BF |
490 | switch (dummy) { |
491 | case RPC_AUTH_NULL: | |
492 | /* Nothing to read */ | |
12fc3e92 BF |
493 | if (cbs->flavor == (u32)(-1)) |
494 | cbs->flavor = RPC_AUTH_NULL; | |
acb2887e BF |
495 | break; |
496 | case RPC_AUTH_UNIX: | |
497 | READ_BUF(8); | |
498 | /* stamp */ | |
06553991 | 499 | dummy = be32_to_cpup(p++); |
acb2887e BF |
500 | |
501 | /* machine name */ | |
06553991 | 502 | dummy = be32_to_cpup(p++); |
acb2887e BF |
503 | READ_BUF(dummy); |
504 | SAVEMEM(machine_name, dummy); | |
505 | ||
506 | /* uid, gid */ | |
507 | READ_BUF(8); | |
06553991 BF |
508 | uid = be32_to_cpup(p++); |
509 | gid = be32_to_cpup(p++); | |
acb2887e BF |
510 | |
511 | /* more gids */ | |
512 | READ_BUF(4); | |
06553991 | 513 | dummy = be32_to_cpup(p++); |
acb2887e | 514 | READ_BUF(dummy * 4); |
12fc3e92 | 515 | if (cbs->flavor == (u32)(-1)) { |
03bc6d1c EB |
516 | kuid_t kuid = make_kuid(&init_user_ns, uid); |
517 | kgid_t kgid = make_kgid(&init_user_ns, gid); | |
518 | if (uid_valid(kuid) && gid_valid(kgid)) { | |
519 | cbs->uid = kuid; | |
520 | cbs->gid = kgid; | |
521 | cbs->flavor = RPC_AUTH_UNIX; | |
522 | } else { | |
523 | dprintk("RPC_AUTH_UNIX with invalid" | |
524 | "uid or gid ignoring!\n"); | |
525 | } | |
12fc3e92 | 526 | } |
acb2887e BF |
527 | break; |
528 | case RPC_AUTH_GSS: | |
529 | dprintk("RPC_AUTH_GSS callback secflavor " | |
530 | "not supported!\n"); | |
531 | READ_BUF(8); | |
532 | /* gcbp_service */ | |
06553991 | 533 | dummy = be32_to_cpup(p++); |
acb2887e | 534 | /* gcbp_handle_from_server */ |
06553991 | 535 | dummy = be32_to_cpup(p++); |
acb2887e BF |
536 | READ_BUF(dummy); |
537 | p += XDR_QUADLEN(dummy); | |
538 | /* gcbp_handle_from_client */ | |
539 | READ_BUF(4); | |
06553991 | 540 | dummy = be32_to_cpup(p++); |
acb2887e BF |
541 | READ_BUF(dummy); |
542 | break; | |
543 | default: | |
544 | dprintk("Illegal callback secflavor\n"); | |
545 | return nfserr_inval; | |
546 | } | |
547 | } | |
548 | DECODE_TAIL; | |
549 | } | |
550 | ||
cb73a9f4 BF |
551 | static __be32 nfsd4_decode_backchannel_ctl(struct nfsd4_compoundargs *argp, struct nfsd4_backchannel_ctl *bc) |
552 | { | |
553 | DECODE_HEAD; | |
554 | ||
555 | READ_BUF(4); | |
06553991 | 556 | bc->bc_cb_program = be32_to_cpup(p++); |
cb73a9f4 BF |
557 | nfsd4_decode_cb_sec(argp, &bc->bc_cb_sec); |
558 | ||
559 | DECODE_TAIL; | |
560 | } | |
561 | ||
1d1bc8f2 BF |
562 | static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) |
563 | { | |
564 | DECODE_HEAD; | |
1d1bc8f2 BF |
565 | |
566 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 8); | |
567 | COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
06553991 | 568 | bcts->dir = be32_to_cpup(p++); |
6ce2357f BS |
569 | /* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker |
570 | * could help us figure out we should be using it. */ | |
1d1bc8f2 BF |
571 | DECODE_TAIL; |
572 | } | |
573 | ||
b37ad28b | 574 | static __be32 |
1da177e4 LT |
575 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
576 | { | |
577 | DECODE_HEAD; | |
578 | ||
e31a1b66 | 579 | READ_BUF(4); |
06553991 | 580 | close->cl_seqid = be32_to_cpup(p++); |
e31a1b66 | 581 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
1da177e4 LT |
582 | |
583 | DECODE_TAIL; | |
584 | } | |
585 | ||
586 | ||
b37ad28b | 587 | static __be32 |
1da177e4 LT |
588 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
589 | { | |
590 | DECODE_HEAD; | |
591 | ||
592 | READ_BUF(12); | |
542d1ab3 | 593 | p = xdr_decode_hyper(p, &commit->co_offset); |
06553991 | 594 | commit->co_count = be32_to_cpup(p++); |
1da177e4 LT |
595 | |
596 | DECODE_TAIL; | |
597 | } | |
598 | ||
b37ad28b | 599 | static __be32 |
1da177e4 LT |
600 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
601 | { | |
602 | DECODE_HEAD; | |
603 | ||
604 | READ_BUF(4); | |
06553991 | 605 | create->cr_type = be32_to_cpup(p++); |
1da177e4 LT |
606 | switch (create->cr_type) { |
607 | case NF4LNK: | |
608 | READ_BUF(4); | |
7fb84306 BF |
609 | create->cr_datalen = be32_to_cpup(p++); |
610 | READ_BUF(create->cr_datalen); | |
29c353b3 | 611 | create->cr_data = svcxdr_dupstr(argp, p, create->cr_datalen); |
7fb84306 | 612 | if (!create->cr_data) |
76f47128 | 613 | return nfserr_jukebox; |
1da177e4 LT |
614 | break; |
615 | case NF4BLK: | |
616 | case NF4CHR: | |
617 | READ_BUF(8); | |
06553991 BF |
618 | create->cr_specdata1 = be32_to_cpup(p++); |
619 | create->cr_specdata2 = be32_to_cpup(p++); | |
1da177e4 LT |
620 | break; |
621 | case NF4SOCK: | |
622 | case NF4FIFO: | |
623 | case NF4DIR: | |
624 | default: | |
625 | break; | |
626 | } | |
627 | ||
628 | READ_BUF(4); | |
06553991 | 629 | create->cr_namelen = be32_to_cpup(p++); |
1da177e4 LT |
630 | READ_BUF(create->cr_namelen); |
631 | SAVEMEM(create->cr_name, create->cr_namelen); | |
a36b1725 | 632 | if ((status = check_filename(create->cr_name, create->cr_namelen))) |
1da177e4 LT |
633 | return status; |
634 | ||
3c8e0316 | 635 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
18032ca0 | 636 | &create->cr_acl, &create->cr_label); |
c0d6fc8a | 637 | if (status) |
1da177e4 LT |
638 | goto out; |
639 | ||
640 | DECODE_TAIL; | |
641 | } | |
642 | ||
b37ad28b | 643 | static inline __be32 |
1da177e4 LT |
644 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
645 | { | |
e31a1b66 | 646 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
1da177e4 LT |
647 | } |
648 | ||
b37ad28b | 649 | static inline __be32 |
1da177e4 LT |
650 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
651 | { | |
652 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
653 | } | |
654 | ||
b37ad28b | 655 | static __be32 |
1da177e4 LT |
656 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
657 | { | |
658 | DECODE_HEAD; | |
659 | ||
660 | READ_BUF(4); | |
06553991 | 661 | link->li_namelen = be32_to_cpup(p++); |
1da177e4 LT |
662 | READ_BUF(link->li_namelen); |
663 | SAVEMEM(link->li_name, link->li_namelen); | |
a36b1725 | 664 | if ((status = check_filename(link->li_name, link->li_namelen))) |
1da177e4 LT |
665 | return status; |
666 | ||
667 | DECODE_TAIL; | |
668 | } | |
669 | ||
b37ad28b | 670 | static __be32 |
1da177e4 LT |
671 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
672 | { | |
673 | DECODE_HEAD; | |
674 | ||
1da177e4 LT |
675 | /* |
676 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
677 | */ | |
678 | READ_BUF(28); | |
06553991 | 679 | lock->lk_type = be32_to_cpup(p++); |
1da177e4 LT |
680 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) |
681 | goto xdr_error; | |
06553991 | 682 | lock->lk_reclaim = be32_to_cpup(p++); |
542d1ab3 BF |
683 | p = xdr_decode_hyper(p, &lock->lk_offset); |
684 | p = xdr_decode_hyper(p, &lock->lk_length); | |
06553991 | 685 | lock->lk_is_new = be32_to_cpup(p++); |
1da177e4 LT |
686 | |
687 | if (lock->lk_is_new) { | |
e31a1b66 | 688 | READ_BUF(4); |
06553991 | 689 | lock->lk_new_open_seqid = be32_to_cpup(p++); |
e31a1b66 BH |
690 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
691 | if (status) | |
692 | return status; | |
693 | READ_BUF(8 + sizeof(clientid_t)); | |
06553991 | 694 | lock->lk_new_lock_seqid = be32_to_cpup(p++); |
1da177e4 | 695 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); |
06553991 | 696 | lock->lk_new_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
697 | READ_BUF(lock->lk_new_owner.len); |
698 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
699 | } else { | |
e31a1b66 BH |
700 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
701 | if (status) | |
702 | return status; | |
703 | READ_BUF(4); | |
06553991 | 704 | lock->lk_old_lock_seqid = be32_to_cpup(p++); |
1da177e4 LT |
705 | } |
706 | ||
707 | DECODE_TAIL; | |
708 | } | |
709 | ||
b37ad28b | 710 | static __be32 |
1da177e4 LT |
711 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
712 | { | |
713 | DECODE_HEAD; | |
714 | ||
715 | READ_BUF(32); | |
06553991 | 716 | lockt->lt_type = be32_to_cpup(p++); |
1da177e4 LT |
717 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) |
718 | goto xdr_error; | |
542d1ab3 BF |
719 | p = xdr_decode_hyper(p, &lockt->lt_offset); |
720 | p = xdr_decode_hyper(p, &lockt->lt_length); | |
1da177e4 | 721 | COPYMEM(&lockt->lt_clientid, 8); |
06553991 | 722 | lockt->lt_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
723 | READ_BUF(lockt->lt_owner.len); |
724 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
725 | ||
726 | DECODE_TAIL; | |
727 | } | |
728 | ||
b37ad28b | 729 | static __be32 |
1da177e4 LT |
730 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
731 | { | |
732 | DECODE_HEAD; | |
733 | ||
e31a1b66 | 734 | READ_BUF(8); |
06553991 | 735 | locku->lu_type = be32_to_cpup(p++); |
1da177e4 LT |
736 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) |
737 | goto xdr_error; | |
06553991 | 738 | locku->lu_seqid = be32_to_cpup(p++); |
e31a1b66 BH |
739 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
740 | if (status) | |
741 | return status; | |
742 | READ_BUF(16); | |
542d1ab3 BF |
743 | p = xdr_decode_hyper(p, &locku->lu_offset); |
744 | p = xdr_decode_hyper(p, &locku->lu_length); | |
1da177e4 LT |
745 | |
746 | DECODE_TAIL; | |
747 | } | |
748 | ||
b37ad28b | 749 | static __be32 |
1da177e4 LT |
750 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
751 | { | |
752 | DECODE_HEAD; | |
753 | ||
754 | READ_BUF(4); | |
06553991 | 755 | lookup->lo_len = be32_to_cpup(p++); |
1da177e4 LT |
756 | READ_BUF(lookup->lo_len); |
757 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
a36b1725 | 758 | if ((status = check_filename(lookup->lo_name, lookup->lo_len))) |
1da177e4 LT |
759 | return status; |
760 | ||
761 | DECODE_TAIL; | |
762 | } | |
763 | ||
2c8bd7e0 | 764 | static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when) |
04f9e664 BF |
765 | { |
766 | __be32 *p; | |
767 | u32 w; | |
768 | ||
769 | READ_BUF(4); | |
06553991 | 770 | w = be32_to_cpup(p++); |
2c8bd7e0 BH |
771 | *share_access = w & NFS4_SHARE_ACCESS_MASK; |
772 | *deleg_want = w & NFS4_SHARE_WANT_MASK; | |
773 | if (deleg_when) | |
774 | *deleg_when = w & NFS4_SHARE_WHEN_MASK; | |
775 | ||
04f9e664 BF |
776 | switch (w & NFS4_SHARE_ACCESS_MASK) { |
777 | case NFS4_SHARE_ACCESS_READ: | |
778 | case NFS4_SHARE_ACCESS_WRITE: | |
779 | case NFS4_SHARE_ACCESS_BOTH: | |
780 | break; | |
781 | default: | |
782 | return nfserr_bad_xdr; | |
783 | } | |
fc0d14fe | 784 | w &= ~NFS4_SHARE_ACCESS_MASK; |
04f9e664 BF |
785 | if (!w) |
786 | return nfs_ok; | |
787 | if (!argp->minorversion) | |
788 | return nfserr_bad_xdr; | |
789 | switch (w & NFS4_SHARE_WANT_MASK) { | |
790 | case NFS4_SHARE_WANT_NO_PREFERENCE: | |
791 | case NFS4_SHARE_WANT_READ_DELEG: | |
792 | case NFS4_SHARE_WANT_WRITE_DELEG: | |
793 | case NFS4_SHARE_WANT_ANY_DELEG: | |
794 | case NFS4_SHARE_WANT_NO_DELEG: | |
795 | case NFS4_SHARE_WANT_CANCEL: | |
796 | break; | |
797 | default: | |
798 | return nfserr_bad_xdr; | |
799 | } | |
92bac8c5 | 800 | w &= ~NFS4_SHARE_WANT_MASK; |
04f9e664 BF |
801 | if (!w) |
802 | return nfs_ok; | |
2c8bd7e0 BH |
803 | |
804 | if (!deleg_when) /* open_downgrade */ | |
805 | return nfserr_inval; | |
04f9e664 BF |
806 | switch (w) { |
807 | case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL: | |
808 | case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED: | |
c668fc6d BH |
809 | case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL | |
810 | NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED): | |
04f9e664 BF |
811 | return nfs_ok; |
812 | } | |
813 | xdr_error: | |
814 | return nfserr_bad_xdr; | |
815 | } | |
816 | ||
817 | static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x) | |
818 | { | |
819 | __be32 *p; | |
820 | ||
821 | READ_BUF(4); | |
06553991 | 822 | *x = be32_to_cpup(p++); |
04f9e664 | 823 | /* Note: unlinke access bits, deny bits may be zero. */ |
01cd4afa | 824 | if (*x & ~NFS4_SHARE_DENY_BOTH) |
04f9e664 BF |
825 | return nfserr_bad_xdr; |
826 | return nfs_ok; | |
827 | xdr_error: | |
828 | return nfserr_bad_xdr; | |
829 | } | |
830 | ||
a084daf5 BF |
831 | static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o) |
832 | { | |
833 | __be32 *p; | |
834 | ||
835 | READ_BUF(4); | |
06553991 | 836 | o->len = be32_to_cpup(p++); |
a084daf5 BF |
837 | |
838 | if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT) | |
839 | return nfserr_bad_xdr; | |
840 | ||
841 | READ_BUF(o->len); | |
842 | SAVEMEM(o->data, o->len); | |
843 | return nfs_ok; | |
844 | xdr_error: | |
845 | return nfserr_bad_xdr; | |
846 | } | |
847 | ||
b37ad28b | 848 | static __be32 |
1da177e4 LT |
849 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
850 | { | |
851 | DECODE_HEAD; | |
2c8bd7e0 | 852 | u32 dummy; |
1da177e4 LT |
853 | |
854 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
855 | open->op_iattr.ia_valid = 0; | |
fe0750e5 | 856 | open->op_openowner = NULL; |
1da177e4 | 857 | |
9d313b17 | 858 | open->op_xdr_error = 0; |
1da177e4 | 859 | /* seqid, share_access, share_deny, clientid, ownerlen */ |
04f9e664 | 860 | READ_BUF(4); |
06553991 | 861 | open->op_seqid = be32_to_cpup(p++); |
2c8bd7e0 BH |
862 | /* decode, yet ignore deleg_when until supported */ |
863 | status = nfsd4_decode_share_access(argp, &open->op_share_access, | |
864 | &open->op_deleg_want, &dummy); | |
04f9e664 BF |
865 | if (status) |
866 | goto xdr_error; | |
867 | status = nfsd4_decode_share_deny(argp, &open->op_share_deny); | |
868 | if (status) | |
869 | goto xdr_error; | |
a084daf5 | 870 | READ_BUF(sizeof(clientid_t)); |
1da177e4 | 871 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); |
a084daf5 BF |
872 | status = nfsd4_decode_opaque(argp, &open->op_owner); |
873 | if (status) | |
874 | goto xdr_error; | |
875 | READ_BUF(4); | |
06553991 | 876 | open->op_create = be32_to_cpup(p++); |
1da177e4 LT |
877 | switch (open->op_create) { |
878 | case NFS4_OPEN_NOCREATE: | |
879 | break; | |
880 | case NFS4_OPEN_CREATE: | |
881 | READ_BUF(4); | |
06553991 | 882 | open->op_createmode = be32_to_cpup(p++); |
1da177e4 LT |
883 | switch (open->op_createmode) { |
884 | case NFS4_CREATE_UNCHECKED: | |
885 | case NFS4_CREATE_GUARDED: | |
c0d6fc8a | 886 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
18032ca0 | 887 | &open->op_iattr, &open->op_acl, &open->op_label); |
c0d6fc8a | 888 | if (status) |
1da177e4 LT |
889 | goto out; |
890 | break; | |
891 | case NFS4_CREATE_EXCLUSIVE: | |
ab4684d1 CL |
892 | READ_BUF(NFS4_VERIFIER_SIZE); |
893 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 894 | break; |
79fb54ab BH |
895 | case NFS4_CREATE_EXCLUSIVE4_1: |
896 | if (argp->minorversion < 1) | |
897 | goto xdr_error; | |
ab4684d1 CL |
898 | READ_BUF(NFS4_VERIFIER_SIZE); |
899 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
79fb54ab | 900 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
18032ca0 | 901 | &open->op_iattr, &open->op_acl, &open->op_label); |
79fb54ab BH |
902 | if (status) |
903 | goto out; | |
904 | break; | |
1da177e4 LT |
905 | default: |
906 | goto xdr_error; | |
907 | } | |
908 | break; | |
909 | default: | |
910 | goto xdr_error; | |
911 | } | |
912 | ||
913 | /* open_claim */ | |
914 | READ_BUF(4); | |
06553991 | 915 | open->op_claim_type = be32_to_cpup(p++); |
1da177e4 LT |
916 | switch (open->op_claim_type) { |
917 | case NFS4_OPEN_CLAIM_NULL: | |
918 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
919 | READ_BUF(4); | |
06553991 | 920 | open->op_fname.len = be32_to_cpup(p++); |
1da177e4 LT |
921 | READ_BUF(open->op_fname.len); |
922 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 923 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
924 | return status; |
925 | break; | |
926 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
927 | READ_BUF(4); | |
06553991 | 928 | open->op_delegate_type = be32_to_cpup(p++); |
1da177e4 LT |
929 | break; |
930 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
e31a1b66 BH |
931 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
932 | if (status) | |
933 | return status; | |
934 | READ_BUF(4); | |
06553991 | 935 | open->op_fname.len = be32_to_cpup(p++); |
1da177e4 LT |
936 | READ_BUF(open->op_fname.len); |
937 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 938 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
939 | return status; |
940 | break; | |
8b289b2c BF |
941 | case NFS4_OPEN_CLAIM_FH: |
942 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
943 | if (argp->minorversion < 1) | |
944 | goto xdr_error; | |
945 | /* void */ | |
946 | break; | |
947 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
948 | if (argp->minorversion < 1) | |
949 | goto xdr_error; | |
950 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); | |
951 | if (status) | |
952 | return status; | |
953 | break; | |
1da177e4 LT |
954 | default: |
955 | goto xdr_error; | |
956 | } | |
957 | ||
958 | DECODE_TAIL; | |
959 | } | |
960 | ||
b37ad28b | 961 | static __be32 |
1da177e4 LT |
962 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
963 | { | |
964 | DECODE_HEAD; | |
e1a90ebd AS |
965 | |
966 | if (argp->minorversion >= 1) | |
967 | return nfserr_notsupp; | |
968 | ||
e31a1b66 BH |
969 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
970 | if (status) | |
971 | return status; | |
972 | READ_BUF(4); | |
06553991 | 973 | open_conf->oc_seqid = be32_to_cpup(p++); |
e1a90ebd | 974 | |
1da177e4 LT |
975 | DECODE_TAIL; |
976 | } | |
977 | ||
b37ad28b | 978 | static __be32 |
1da177e4 LT |
979 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
980 | { | |
981 | DECODE_HEAD; | |
982 | ||
e31a1b66 BH |
983 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
984 | if (status) | |
985 | return status; | |
04f9e664 | 986 | READ_BUF(4); |
06553991 | 987 | open_down->od_seqid = be32_to_cpup(p++); |
2c8bd7e0 BH |
988 | status = nfsd4_decode_share_access(argp, &open_down->od_share_access, |
989 | &open_down->od_deleg_want, NULL); | |
04f9e664 BF |
990 | if (status) |
991 | return status; | |
992 | status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny); | |
993 | if (status) | |
994 | return status; | |
1da177e4 LT |
995 | DECODE_TAIL; |
996 | } | |
997 | ||
b37ad28b | 998 | static __be32 |
1da177e4 LT |
999 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
1000 | { | |
1001 | DECODE_HEAD; | |
1002 | ||
1003 | READ_BUF(4); | |
06553991 | 1004 | putfh->pf_fhlen = be32_to_cpup(p++); |
1da177e4 LT |
1005 | if (putfh->pf_fhlen > NFS4_FHSIZE) |
1006 | goto xdr_error; | |
1007 | READ_BUF(putfh->pf_fhlen); | |
1008 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
1009 | ||
1010 | DECODE_TAIL; | |
1011 | } | |
1012 | ||
e1a90ebd AS |
1013 | static __be32 |
1014 | nfsd4_decode_putpubfh(struct nfsd4_compoundargs *argp, void *p) | |
1015 | { | |
1016 | if (argp->minorversion == 0) | |
1017 | return nfs_ok; | |
1018 | return nfserr_notsupp; | |
1019 | } | |
1020 | ||
b37ad28b | 1021 | static __be32 |
1da177e4 LT |
1022 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
1023 | { | |
1024 | DECODE_HEAD; | |
1025 | ||
e31a1b66 BH |
1026 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
1027 | if (status) | |
1028 | return status; | |
1029 | READ_BUF(12); | |
542d1ab3 | 1030 | p = xdr_decode_hyper(p, &read->rd_offset); |
06553991 | 1031 | read->rd_length = be32_to_cpup(p++); |
1da177e4 LT |
1032 | |
1033 | DECODE_TAIL; | |
1034 | } | |
1035 | ||
b37ad28b | 1036 | static __be32 |
1da177e4 LT |
1037 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
1038 | { | |
1039 | DECODE_HEAD; | |
1040 | ||
1041 | READ_BUF(24); | |
542d1ab3 | 1042 | p = xdr_decode_hyper(p, &readdir->rd_cookie); |
1da177e4 | 1043 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); |
06553991 BF |
1044 | readdir->rd_dircount = be32_to_cpup(p++); |
1045 | readdir->rd_maxcount = be32_to_cpup(p++); | |
1da177e4 LT |
1046 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) |
1047 | goto out; | |
1048 | ||
1049 | DECODE_TAIL; | |
1050 | } | |
1051 | ||
b37ad28b | 1052 | static __be32 |
1da177e4 LT |
1053 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
1054 | { | |
1055 | DECODE_HEAD; | |
1056 | ||
1057 | READ_BUF(4); | |
06553991 | 1058 | remove->rm_namelen = be32_to_cpup(p++); |
1da177e4 LT |
1059 | READ_BUF(remove->rm_namelen); |
1060 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
a36b1725 | 1061 | if ((status = check_filename(remove->rm_name, remove->rm_namelen))) |
1da177e4 LT |
1062 | return status; |
1063 | ||
1064 | DECODE_TAIL; | |
1065 | } | |
1066 | ||
b37ad28b | 1067 | static __be32 |
1da177e4 LT |
1068 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
1069 | { | |
1070 | DECODE_HEAD; | |
1071 | ||
1072 | READ_BUF(4); | |
06553991 | 1073 | rename->rn_snamelen = be32_to_cpup(p++); |
1da177e4 LT |
1074 | READ_BUF(rename->rn_snamelen + 4); |
1075 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); | |
06553991 | 1076 | rename->rn_tnamelen = be32_to_cpup(p++); |
1da177e4 LT |
1077 | READ_BUF(rename->rn_tnamelen); |
1078 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
a36b1725 | 1079 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen))) |
1da177e4 | 1080 | return status; |
a36b1725 | 1081 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen))) |
1da177e4 LT |
1082 | return status; |
1083 | ||
1084 | DECODE_TAIL; | |
1085 | } | |
1086 | ||
b37ad28b | 1087 | static __be32 |
1da177e4 LT |
1088 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
1089 | { | |
1090 | DECODE_HEAD; | |
1091 | ||
e1a90ebd AS |
1092 | if (argp->minorversion >= 1) |
1093 | return nfserr_notsupp; | |
1094 | ||
1da177e4 LT |
1095 | READ_BUF(sizeof(clientid_t)); |
1096 | COPYMEM(clientid, sizeof(clientid_t)); | |
1097 | ||
1098 | DECODE_TAIL; | |
1099 | } | |
1100 | ||
dcb488a3 AA |
1101 | static __be32 |
1102 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
1103 | struct nfsd4_secinfo *secinfo) | |
1104 | { | |
1105 | DECODE_HEAD; | |
1106 | ||
1107 | READ_BUF(4); | |
06553991 | 1108 | secinfo->si_namelen = be32_to_cpup(p++); |
dcb488a3 AA |
1109 | READ_BUF(secinfo->si_namelen); |
1110 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
a36b1725 | 1111 | status = check_filename(secinfo->si_name, secinfo->si_namelen); |
dcb488a3 AA |
1112 | if (status) |
1113 | return status; | |
1114 | DECODE_TAIL; | |
1115 | } | |
1116 | ||
04f4ad16 BF |
1117 | static __be32 |
1118 | nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, | |
1119 | struct nfsd4_secinfo_no_name *sin) | |
1120 | { | |
1121 | DECODE_HEAD; | |
1122 | ||
1123 | READ_BUF(4); | |
06553991 | 1124 | sin->sin_style = be32_to_cpup(p++); |
04f4ad16 BF |
1125 | DECODE_TAIL; |
1126 | } | |
1127 | ||
b37ad28b | 1128 | static __be32 |
1da177e4 LT |
1129 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
1130 | { | |
e31a1b66 | 1131 | __be32 status; |
1da177e4 | 1132 | |
e31a1b66 BH |
1133 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
1134 | if (status) | |
1135 | return status; | |
3c8e0316 | 1136 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
18032ca0 | 1137 | &setattr->sa_acl, &setattr->sa_label); |
1da177e4 LT |
1138 | } |
1139 | ||
b37ad28b | 1140 | static __be32 |
1da177e4 LT |
1141 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
1142 | { | |
1143 | DECODE_HEAD; | |
1144 | ||
e1a90ebd AS |
1145 | if (argp->minorversion >= 1) |
1146 | return nfserr_notsupp; | |
1147 | ||
ab4684d1 CL |
1148 | READ_BUF(NFS4_VERIFIER_SIZE); |
1149 | COPYMEM(setclientid->se_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 1150 | |
a084daf5 BF |
1151 | status = nfsd4_decode_opaque(argp, &setclientid->se_name); |
1152 | if (status) | |
1153 | return nfserr_bad_xdr; | |
1154 | READ_BUF(8); | |
06553991 BF |
1155 | setclientid->se_callback_prog = be32_to_cpup(p++); |
1156 | setclientid->se_callback_netid_len = be32_to_cpup(p++); | |
1da177e4 LT |
1157 | |
1158 | READ_BUF(setclientid->se_callback_netid_len + 4); | |
1159 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); | |
06553991 | 1160 | setclientid->se_callback_addr_len = be32_to_cpup(p++); |
1da177e4 LT |
1161 | |
1162 | READ_BUF(setclientid->se_callback_addr_len + 4); | |
1163 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); | |
06553991 | 1164 | setclientid->se_callback_ident = be32_to_cpup(p++); |
1da177e4 LT |
1165 | |
1166 | DECODE_TAIL; | |
1167 | } | |
1168 | ||
b37ad28b | 1169 | static __be32 |
1da177e4 LT |
1170 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
1171 | { | |
1172 | DECODE_HEAD; | |
1173 | ||
e1a90ebd AS |
1174 | if (argp->minorversion >= 1) |
1175 | return nfserr_notsupp; | |
1176 | ||
ab4684d1 | 1177 | READ_BUF(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 1178 | COPYMEM(&scd_c->sc_clientid, 8); |
ab4684d1 | 1179 | COPYMEM(&scd_c->sc_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
1180 | |
1181 | DECODE_TAIL; | |
1182 | } | |
1183 | ||
1184 | /* Also used for NVERIFY */ | |
b37ad28b | 1185 | static __be32 |
1da177e4 LT |
1186 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
1187 | { | |
1da177e4 LT |
1188 | DECODE_HEAD; |
1189 | ||
1190 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
1191 | goto out; | |
1192 | ||
1193 | /* For convenience's sake, we compare raw xdr'd attributes in | |
e5f95703 BF |
1194 | * nfsd4_proc_verify */ |
1195 | ||
1da177e4 | 1196 | READ_BUF(4); |
06553991 | 1197 | verify->ve_attrlen = be32_to_cpup(p++); |
1da177e4 LT |
1198 | READ_BUF(verify->ve_attrlen); |
1199 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
1200 | ||
1201 | DECODE_TAIL; | |
1202 | } | |
1203 | ||
b37ad28b | 1204 | static __be32 |
1da177e4 LT |
1205 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
1206 | { | |
1207 | int avail; | |
1da177e4 LT |
1208 | int len; |
1209 | DECODE_HEAD; | |
1210 | ||
e31a1b66 BH |
1211 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
1212 | if (status) | |
1213 | return status; | |
1214 | READ_BUF(16); | |
542d1ab3 | 1215 | p = xdr_decode_hyper(p, &write->wr_offset); |
06553991 | 1216 | write->wr_stable_how = be32_to_cpup(p++); |
1da177e4 LT |
1217 | if (write->wr_stable_how > 2) |
1218 | goto xdr_error; | |
06553991 | 1219 | write->wr_buflen = be32_to_cpup(p++); |
1da177e4 LT |
1220 | |
1221 | /* Sorry .. no magic macros for this.. * | |
1222 | * READ_BUF(write->wr_buflen); | |
1223 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
1224 | */ | |
1225 | avail = (char*)argp->end - (char*)argp->p; | |
1226 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
1227 | dprintk("NFSD: xdr error (%s:%d)\n", |
1228 | __FILE__, __LINE__); | |
1da177e4 LT |
1229 | goto xdr_error; |
1230 | } | |
70cc7f75 BF |
1231 | write->wr_head.iov_base = p; |
1232 | write->wr_head.iov_len = avail; | |
70cc7f75 | 1233 | write->wr_pagelist = argp->pagelist; |
5a80a54d BF |
1234 | |
1235 | len = XDR_QUADLEN(write->wr_buflen) << 2; | |
1236 | if (len >= avail) { | |
1237 | int pages; | |
1238 | ||
1239 | len -= avail; | |
1240 | ||
1241 | pages = len >> PAGE_SHIFT; | |
1242 | argp->pagelist += pages; | |
1243 | argp->pagelen -= pages * PAGE_SIZE; | |
1244 | len -= pages * PAGE_SIZE; | |
1245 | ||
1246 | argp->p = (__be32 *)page_address(argp->pagelist[0]); | |
365da4ad | 1247 | argp->pagelist++; |
5a80a54d | 1248 | argp->end = argp->p + XDR_QUADLEN(PAGE_SIZE); |
1da177e4 | 1249 | } |
5a80a54d | 1250 | argp->p += XDR_QUADLEN(len); |
1da177e4 LT |
1251 | |
1252 | DECODE_TAIL; | |
1253 | } | |
1254 | ||
b37ad28b | 1255 | static __be32 |
1da177e4 LT |
1256 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
1257 | { | |
1258 | DECODE_HEAD; | |
1259 | ||
e1a90ebd AS |
1260 | if (argp->minorversion >= 1) |
1261 | return nfserr_notsupp; | |
1262 | ||
1da177e4 LT |
1263 | READ_BUF(12); |
1264 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
06553991 | 1265 | rlockowner->rl_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
1266 | READ_BUF(rlockowner->rl_owner.len); |
1267 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
1268 | ||
60adfc50 AA |
1269 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1270 | return nfserr_inval; | |
1da177e4 LT |
1271 | DECODE_TAIL; |
1272 | } | |
1273 | ||
2db134eb AA |
1274 | static __be32 |
1275 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1276 | struct nfsd4_exchange_id *exid) |
2db134eb | 1277 | { |
5afa040b | 1278 | int dummy, tmp; |
0733d213 AA |
1279 | DECODE_HEAD; |
1280 | ||
1281 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1282 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1283 | ||
a084daf5 BF |
1284 | status = nfsd4_decode_opaque(argp, &exid->clname); |
1285 | if (status) | |
1286 | return nfserr_bad_xdr; | |
0733d213 AA |
1287 | |
1288 | READ_BUF(4); | |
06553991 | 1289 | exid->flags = be32_to_cpup(p++); |
0733d213 AA |
1290 | |
1291 | /* Ignore state_protect4_a */ | |
1292 | READ_BUF(4); | |
06553991 | 1293 | exid->spa_how = be32_to_cpup(p++); |
0733d213 AA |
1294 | switch (exid->spa_how) { |
1295 | case SP4_NONE: | |
1296 | break; | |
1297 | case SP4_MACH_CRED: | |
1298 | /* spo_must_enforce */ | |
1299 | READ_BUF(4); | |
06553991 | 1300 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1301 | READ_BUF(dummy * 4); |
1302 | p += dummy; | |
1303 | ||
1304 | /* spo_must_allow */ | |
1305 | READ_BUF(4); | |
06553991 | 1306 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1307 | READ_BUF(dummy * 4); |
1308 | p += dummy; | |
1309 | break; | |
1310 | case SP4_SSV: | |
1311 | /* ssp_ops */ | |
1312 | READ_BUF(4); | |
06553991 | 1313 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1314 | READ_BUF(dummy * 4); |
1315 | p += dummy; | |
1316 | ||
1317 | READ_BUF(4); | |
06553991 | 1318 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1319 | READ_BUF(dummy * 4); |
1320 | p += dummy; | |
1321 | ||
1322 | /* ssp_hash_algs<> */ | |
1323 | READ_BUF(4); | |
06553991 | 1324 | tmp = be32_to_cpup(p++); |
5afa040b MJ |
1325 | while (tmp--) { |
1326 | READ_BUF(4); | |
06553991 | 1327 | dummy = be32_to_cpup(p++); |
5afa040b MJ |
1328 | READ_BUF(dummy); |
1329 | p += XDR_QUADLEN(dummy); | |
1330 | } | |
0733d213 AA |
1331 | |
1332 | /* ssp_encr_algs<> */ | |
1333 | READ_BUF(4); | |
06553991 | 1334 | tmp = be32_to_cpup(p++); |
5afa040b MJ |
1335 | while (tmp--) { |
1336 | READ_BUF(4); | |
06553991 | 1337 | dummy = be32_to_cpup(p++); |
5afa040b MJ |
1338 | READ_BUF(dummy); |
1339 | p += XDR_QUADLEN(dummy); | |
1340 | } | |
0733d213 AA |
1341 | |
1342 | /* ssp_window and ssp_num_gss_handles */ | |
1343 | READ_BUF(8); | |
06553991 BF |
1344 | dummy = be32_to_cpup(p++); |
1345 | dummy = be32_to_cpup(p++); | |
0733d213 AA |
1346 | break; |
1347 | default: | |
1348 | goto xdr_error; | |
1349 | } | |
1350 | ||
1351 | /* Ignore Implementation ID */ | |
1352 | READ_BUF(4); /* nfs_impl_id4 array length */ | |
06553991 | 1353 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1354 | |
1355 | if (dummy > 1) | |
1356 | goto xdr_error; | |
1357 | ||
1358 | if (dummy == 1) { | |
1359 | /* nii_domain */ | |
1360 | READ_BUF(4); | |
06553991 | 1361 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1362 | READ_BUF(dummy); |
1363 | p += XDR_QUADLEN(dummy); | |
1364 | ||
1365 | /* nii_name */ | |
1366 | READ_BUF(4); | |
06553991 | 1367 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1368 | READ_BUF(dummy); |
1369 | p += XDR_QUADLEN(dummy); | |
1370 | ||
1371 | /* nii_date */ | |
1372 | READ_BUF(12); | |
1373 | p += 3; | |
1374 | } | |
1375 | DECODE_TAIL; | |
2db134eb AA |
1376 | } |
1377 | ||
1378 | static __be32 | |
1379 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1380 | struct nfsd4_create_session *sess) | |
1381 | { | |
ec6b5d7b | 1382 | DECODE_HEAD; |
ec6b5d7b | 1383 | u32 dummy; |
ec6b5d7b AA |
1384 | |
1385 | READ_BUF(16); | |
1386 | COPYMEM(&sess->clientid, 8); | |
06553991 BF |
1387 | sess->seqid = be32_to_cpup(p++); |
1388 | sess->flags = be32_to_cpup(p++); | |
ec6b5d7b AA |
1389 | |
1390 | /* Fore channel attrs */ | |
1391 | READ_BUF(28); | |
06553991 BF |
1392 | dummy = be32_to_cpup(p++); /* headerpadsz is always 0 */ |
1393 | sess->fore_channel.maxreq_sz = be32_to_cpup(p++); | |
1394 | sess->fore_channel.maxresp_sz = be32_to_cpup(p++); | |
1395 | sess->fore_channel.maxresp_cached = be32_to_cpup(p++); | |
1396 | sess->fore_channel.maxops = be32_to_cpup(p++); | |
1397 | sess->fore_channel.maxreqs = be32_to_cpup(p++); | |
1398 | sess->fore_channel.nr_rdma_attrs = be32_to_cpup(p++); | |
ec6b5d7b AA |
1399 | if (sess->fore_channel.nr_rdma_attrs == 1) { |
1400 | READ_BUF(4); | |
06553991 | 1401 | sess->fore_channel.rdma_attrs = be32_to_cpup(p++); |
ec6b5d7b AA |
1402 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { |
1403 | dprintk("Too many fore channel attr bitmaps!\n"); | |
1404 | goto xdr_error; | |
1405 | } | |
1406 | ||
1407 | /* Back channel attrs */ | |
1408 | READ_BUF(28); | |
06553991 BF |
1409 | dummy = be32_to_cpup(p++); /* headerpadsz is always 0 */ |
1410 | sess->back_channel.maxreq_sz = be32_to_cpup(p++); | |
1411 | sess->back_channel.maxresp_sz = be32_to_cpup(p++); | |
1412 | sess->back_channel.maxresp_cached = be32_to_cpup(p++); | |
1413 | sess->back_channel.maxops = be32_to_cpup(p++); | |
1414 | sess->back_channel.maxreqs = be32_to_cpup(p++); | |
1415 | sess->back_channel.nr_rdma_attrs = be32_to_cpup(p++); | |
ec6b5d7b AA |
1416 | if (sess->back_channel.nr_rdma_attrs == 1) { |
1417 | READ_BUF(4); | |
06553991 | 1418 | sess->back_channel.rdma_attrs = be32_to_cpup(p++); |
ec6b5d7b AA |
1419 | } else if (sess->back_channel.nr_rdma_attrs > 1) { |
1420 | dprintk("Too many back channel attr bitmaps!\n"); | |
1421 | goto xdr_error; | |
1422 | } | |
1423 | ||
acb2887e | 1424 | READ_BUF(4); |
06553991 | 1425 | sess->callback_prog = be32_to_cpup(p++); |
acb2887e | 1426 | nfsd4_decode_cb_sec(argp, &sess->cb_sec); |
ec6b5d7b | 1427 | DECODE_TAIL; |
2db134eb AA |
1428 | } |
1429 | ||
1430 | static __be32 | |
1431 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, | |
1432 | struct nfsd4_destroy_session *destroy_session) | |
1433 | { | |
e10e0cfc BH |
1434 | DECODE_HEAD; |
1435 | READ_BUF(NFS4_MAX_SESSIONID_LEN); | |
1436 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1437 | ||
1438 | DECODE_TAIL; | |
2db134eb AA |
1439 | } |
1440 | ||
e1ca12df BS |
1441 | static __be32 |
1442 | nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp, | |
1443 | struct nfsd4_free_stateid *free_stateid) | |
1444 | { | |
1445 | DECODE_HEAD; | |
1446 | ||
1447 | READ_BUF(sizeof(stateid_t)); | |
06553991 | 1448 | free_stateid->fr_stateid.si_generation = be32_to_cpup(p++); |
e1ca12df BS |
1449 | COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t)); |
1450 | ||
1451 | DECODE_TAIL; | |
1452 | } | |
1453 | ||
2db134eb AA |
1454 | static __be32 |
1455 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, | |
1456 | struct nfsd4_sequence *seq) | |
1457 | { | |
b85d4c01 BH |
1458 | DECODE_HEAD; |
1459 | ||
1460 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); | |
1461 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
06553991 BF |
1462 | seq->seqid = be32_to_cpup(p++); |
1463 | seq->slotid = be32_to_cpup(p++); | |
1464 | seq->maxslots = be32_to_cpup(p++); | |
1465 | seq->cachethis = be32_to_cpup(p++); | |
b85d4c01 BH |
1466 | |
1467 | DECODE_TAIL; | |
2db134eb AA |
1468 | } |
1469 | ||
17456804 BS |
1470 | static __be32 |
1471 | nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid) | |
1472 | { | |
17456804 | 1473 | int i; |
03cfb420 BS |
1474 | __be32 *p, status; |
1475 | struct nfsd4_test_stateid_id *stateid; | |
17456804 BS |
1476 | |
1477 | READ_BUF(4); | |
1478 | test_stateid->ts_num_ids = ntohl(*p++); | |
1479 | ||
03cfb420 | 1480 | INIT_LIST_HEAD(&test_stateid->ts_stateid_list); |
17456804 BS |
1481 | |
1482 | for (i = 0; i < test_stateid->ts_num_ids; i++) { | |
d5e23383 | 1483 | stateid = svcxdr_tmpalloc(argp, sizeof(*stateid)); |
03cfb420 | 1484 | if (!stateid) { |
afcf6792 | 1485 | status = nfserrno(-ENOMEM); |
03cfb420 BS |
1486 | goto out; |
1487 | } | |
1488 | ||
03cfb420 BS |
1489 | INIT_LIST_HEAD(&stateid->ts_id_list); |
1490 | list_add_tail(&stateid->ts_id_list, &test_stateid->ts_stateid_list); | |
1491 | ||
1492 | status = nfsd4_decode_stateid(argp, &stateid->ts_id_stateid); | |
17456804 | 1493 | if (status) |
03cfb420 | 1494 | goto out; |
17456804 BS |
1495 | } |
1496 | ||
1497 | status = 0; | |
1498 | out: | |
1499 | return status; | |
1500 | xdr_error: | |
1501 | dprintk("NFSD: xdr error (%s:%d)\n", __FILE__, __LINE__); | |
1502 | status = nfserr_bad_xdr; | |
1503 | goto out; | |
1504 | } | |
1505 | ||
345c2842 MJ |
1506 | static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_clientid *dc) |
1507 | { | |
1508 | DECODE_HEAD; | |
1509 | ||
1510 | READ_BUF(8); | |
1511 | COPYMEM(&dc->clientid, 8); | |
1512 | ||
1513 | DECODE_TAIL; | |
1514 | } | |
1515 | ||
4dc6ec00 BF |
1516 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) |
1517 | { | |
1518 | DECODE_HEAD; | |
1519 | ||
1520 | READ_BUF(4); | |
06553991 | 1521 | rc->rca_one_fs = be32_to_cpup(p++); |
4dc6ec00 BF |
1522 | |
1523 | DECODE_TAIL; | |
1524 | } | |
1525 | ||
9cf514cc CH |
1526 | #ifdef CONFIG_NFSD_PNFS |
1527 | static __be32 | |
1528 | nfsd4_decode_getdeviceinfo(struct nfsd4_compoundargs *argp, | |
1529 | struct nfsd4_getdeviceinfo *gdev) | |
1530 | { | |
1531 | DECODE_HEAD; | |
1532 | u32 num, i; | |
1533 | ||
1534 | READ_BUF(sizeof(struct nfsd4_deviceid) + 3 * 4); | |
1535 | COPYMEM(&gdev->gd_devid, sizeof(struct nfsd4_deviceid)); | |
1536 | gdev->gd_layout_type = be32_to_cpup(p++); | |
1537 | gdev->gd_maxcount = be32_to_cpup(p++); | |
1538 | num = be32_to_cpup(p++); | |
1539 | if (num) { | |
1540 | READ_BUF(4 * num); | |
1541 | gdev->gd_notify_types = be32_to_cpup(p++); | |
1542 | for (i = 1; i < num; i++) { | |
1543 | if (be32_to_cpup(p++)) { | |
1544 | status = nfserr_inval; | |
1545 | goto out; | |
1546 | } | |
1547 | } | |
1548 | } | |
1549 | DECODE_TAIL; | |
1550 | } | |
1551 | ||
1552 | static __be32 | |
1553 | nfsd4_decode_layoutget(struct nfsd4_compoundargs *argp, | |
1554 | struct nfsd4_layoutget *lgp) | |
1555 | { | |
1556 | DECODE_HEAD; | |
1557 | ||
1558 | READ_BUF(36); | |
1559 | lgp->lg_signal = be32_to_cpup(p++); | |
1560 | lgp->lg_layout_type = be32_to_cpup(p++); | |
1561 | lgp->lg_seg.iomode = be32_to_cpup(p++); | |
1562 | p = xdr_decode_hyper(p, &lgp->lg_seg.offset); | |
1563 | p = xdr_decode_hyper(p, &lgp->lg_seg.length); | |
1564 | p = xdr_decode_hyper(p, &lgp->lg_minlength); | |
db59c0ef KM |
1565 | |
1566 | status = nfsd4_decode_stateid(argp, &lgp->lg_sid); | |
1567 | if (status) | |
1568 | return status; | |
1569 | ||
9cf514cc CH |
1570 | READ_BUF(4); |
1571 | lgp->lg_maxcount = be32_to_cpup(p++); | |
1572 | ||
1573 | DECODE_TAIL; | |
1574 | } | |
1575 | ||
1576 | static __be32 | |
1577 | nfsd4_decode_layoutcommit(struct nfsd4_compoundargs *argp, | |
1578 | struct nfsd4_layoutcommit *lcp) | |
1579 | { | |
1580 | DECODE_HEAD; | |
1581 | u32 timechange; | |
1582 | ||
1583 | READ_BUF(20); | |
1584 | p = xdr_decode_hyper(p, &lcp->lc_seg.offset); | |
1585 | p = xdr_decode_hyper(p, &lcp->lc_seg.length); | |
1586 | lcp->lc_reclaim = be32_to_cpup(p++); | |
db59c0ef KM |
1587 | |
1588 | status = nfsd4_decode_stateid(argp, &lcp->lc_sid); | |
1589 | if (status) | |
1590 | return status; | |
1591 | ||
9cf514cc CH |
1592 | READ_BUF(4); |
1593 | lcp->lc_newoffset = be32_to_cpup(p++); | |
1594 | if (lcp->lc_newoffset) { | |
1595 | READ_BUF(8); | |
1596 | p = xdr_decode_hyper(p, &lcp->lc_last_wr); | |
1597 | } else | |
1598 | lcp->lc_last_wr = 0; | |
1599 | READ_BUF(4); | |
1600 | timechange = be32_to_cpup(p++); | |
1601 | if (timechange) { | |
1602 | status = nfsd4_decode_time(argp, &lcp->lc_mtime); | |
1603 | if (status) | |
1604 | return status; | |
1605 | } else { | |
1606 | lcp->lc_mtime.tv_nsec = UTIME_NOW; | |
1607 | } | |
1608 | READ_BUF(8); | |
1609 | lcp->lc_layout_type = be32_to_cpup(p++); | |
1610 | ||
1611 | /* | |
1612 | * Save the layout update in XDR format and let the layout driver deal | |
1613 | * with it later. | |
1614 | */ | |
1615 | lcp->lc_up_len = be32_to_cpup(p++); | |
1616 | if (lcp->lc_up_len > 0) { | |
1617 | READ_BUF(lcp->lc_up_len); | |
1618 | READMEM(lcp->lc_up_layout, lcp->lc_up_len); | |
1619 | } | |
1620 | ||
1621 | DECODE_TAIL; | |
1622 | } | |
1623 | ||
1624 | static __be32 | |
1625 | nfsd4_decode_layoutreturn(struct nfsd4_compoundargs *argp, | |
1626 | struct nfsd4_layoutreturn *lrp) | |
1627 | { | |
1628 | DECODE_HEAD; | |
1629 | ||
1630 | READ_BUF(16); | |
1631 | lrp->lr_reclaim = be32_to_cpup(p++); | |
1632 | lrp->lr_layout_type = be32_to_cpup(p++); | |
1633 | lrp->lr_seg.iomode = be32_to_cpup(p++); | |
1634 | lrp->lr_return_type = be32_to_cpup(p++); | |
1635 | if (lrp->lr_return_type == RETURN_FILE) { | |
1636 | READ_BUF(16); | |
1637 | p = xdr_decode_hyper(p, &lrp->lr_seg.offset); | |
1638 | p = xdr_decode_hyper(p, &lrp->lr_seg.length); | |
db59c0ef KM |
1639 | |
1640 | status = nfsd4_decode_stateid(argp, &lrp->lr_sid); | |
1641 | if (status) | |
1642 | return status; | |
1643 | ||
9cf514cc CH |
1644 | READ_BUF(4); |
1645 | lrp->lrf_body_len = be32_to_cpup(p++); | |
1646 | if (lrp->lrf_body_len > 0) { | |
1647 | READ_BUF(lrp->lrf_body_len); | |
1648 | READMEM(lrp->lrf_body, lrp->lrf_body_len); | |
1649 | } | |
1650 | } else { | |
1651 | lrp->lr_seg.offset = 0; | |
1652 | lrp->lr_seg.length = NFS4_MAX_UINT64; | |
1653 | } | |
1654 | ||
1655 | DECODE_TAIL; | |
1656 | } | |
1657 | #endif /* CONFIG_NFSD_PNFS */ | |
1658 | ||
95d871f0 AS |
1659 | static __be32 |
1660 | nfsd4_decode_fallocate(struct nfsd4_compoundargs *argp, | |
1661 | struct nfsd4_fallocate *fallocate) | |
1662 | { | |
1663 | DECODE_HEAD; | |
1664 | ||
1665 | status = nfsd4_decode_stateid(argp, &fallocate->falloc_stateid); | |
1666 | if (status) | |
1667 | return status; | |
1668 | ||
1669 | READ_BUF(16); | |
1670 | p = xdr_decode_hyper(p, &fallocate->falloc_offset); | |
1671 | xdr_decode_hyper(p, &fallocate->falloc_length); | |
1672 | ||
1673 | DECODE_TAIL; | |
1674 | } | |
1675 | ||
24bab491 AS |
1676 | static __be32 |
1677 | nfsd4_decode_seek(struct nfsd4_compoundargs *argp, struct nfsd4_seek *seek) | |
1678 | { | |
1679 | DECODE_HEAD; | |
1680 | ||
1681 | status = nfsd4_decode_stateid(argp, &seek->seek_stateid); | |
1682 | if (status) | |
1683 | return status; | |
1684 | ||
1685 | READ_BUF(8 + 4); | |
1686 | p = xdr_decode_hyper(p, &seek->seek_offset); | |
1687 | seek->seek_whence = be32_to_cpup(p); | |
1688 | ||
1689 | DECODE_TAIL; | |
1690 | } | |
1691 | ||
347e0ad9 BH |
1692 | static __be32 |
1693 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1694 | { | |
1695 | return nfs_ok; | |
1696 | } | |
1697 | ||
3c375c6f BH |
1698 | static __be32 |
1699 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1700 | { | |
1e685ec2 | 1701 | return nfserr_notsupp; |
3c375c6f BH |
1702 | } |
1703 | ||
347e0ad9 BH |
1704 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1705 | ||
1706 | static nfsd4_dec nfsd4_dec_ops[] = { | |
ad1060c8 BF |
1707 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1708 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1709 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1710 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1711 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1712 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1713 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1714 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1715 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1716 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1717 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1718 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1719 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1720 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1721 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1722 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1723 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1724 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1725 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1726 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
e1a90ebd | 1727 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_putpubfh, |
ad1060c8 BF |
1728 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1729 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1730 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1731 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1732 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1733 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1734 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1735 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1736 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1737 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1738 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1739 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1740 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1741 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1742 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1743 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
2db134eb AA |
1744 | |
1745 | /* new operations for NFSv4.1 */ | |
cb73a9f4 | 1746 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_backchannel_ctl, |
1d1bc8f2 | 1747 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
9064caae RD |
1748 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
1749 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
1750 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
e1ca12df | 1751 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, |
9064caae | 1752 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
9cf514cc CH |
1753 | #ifdef CONFIG_NFSD_PNFS |
1754 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_getdeviceinfo, | |
1755 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1756 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_layoutcommit, | |
1757 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_layoutget, | |
1758 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_layoutreturn, | |
1759 | #else | |
9064caae RD |
1760 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, |
1761 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1762 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1763 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1764 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
9cf514cc | 1765 | #endif |
04f4ad16 | 1766 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
9064caae RD |
1767 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
1768 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
17456804 | 1769 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid, |
9064caae | 1770 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
345c2842 | 1771 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, |
4dc6ec00 | 1772 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
87a15a80 AS |
1773 | |
1774 | /* new operations for NFSv4.2 */ | |
95d871f0 | 1775 | [OP_ALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate, |
87a15a80 AS |
1776 | [OP_COPY] = (nfsd4_dec)nfsd4_decode_notsupp, |
1777 | [OP_COPY_NOTIFY] = (nfsd4_dec)nfsd4_decode_notsupp, | |
b0cb9085 | 1778 | [OP_DEALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate, |
87a15a80 AS |
1779 | [OP_IO_ADVISE] = (nfsd4_dec)nfsd4_decode_notsupp, |
1780 | [OP_LAYOUTERROR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1781 | [OP_LAYOUTSTATS] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1782 | [OP_OFFLOAD_CANCEL] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1783 | [OP_OFFLOAD_STATUS] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1784 | [OP_READ_PLUS] = (nfsd4_dec)nfsd4_decode_notsupp, | |
24bab491 | 1785 | [OP_SEEK] = (nfsd4_dec)nfsd4_decode_seek, |
87a15a80 | 1786 | [OP_WRITE_SAME] = (nfsd4_dec)nfsd4_decode_notsupp, |
2db134eb AA |
1787 | }; |
1788 | ||
e1a90ebd AS |
1789 | static inline bool |
1790 | nfsd4_opnum_in_range(struct nfsd4_compoundargs *argp, struct nfsd4_op *op) | |
1791 | { | |
8217d146 | 1792 | if (op->opnum < FIRST_NFS4_OP) |
e1a90ebd | 1793 | return false; |
8217d146 | 1794 | else if (argp->minorversion == 0 && op->opnum > LAST_NFS40_OP) |
e1a90ebd | 1795 | return false; |
8217d146 AS |
1796 | else if (argp->minorversion == 1 && op->opnum > LAST_NFS41_OP) |
1797 | return false; | |
1798 | else if (argp->minorversion == 2 && op->opnum > LAST_NFS42_OP) | |
e1a90ebd AS |
1799 | return false; |
1800 | return true; | |
1801 | } | |
f2feb96b | 1802 | |
b37ad28b | 1803 | static __be32 |
1da177e4 LT |
1804 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1805 | { | |
1806 | DECODE_HEAD; | |
1807 | struct nfsd4_op *op; | |
1091006c | 1808 | bool cachethis = false; |
a5cddc88 BF |
1809 | int auth_slack= argp->rqstp->rq_auth_slack; |
1810 | int max_reply = auth_slack + 8; /* opcnt, status */ | |
b0e35fda BF |
1811 | int readcount = 0; |
1812 | int readbytes = 0; | |
1da177e4 LT |
1813 | int i; |
1814 | ||
1da177e4 | 1815 | READ_BUF(4); |
06553991 | 1816 | argp->taglen = be32_to_cpup(p++); |
1da177e4 LT |
1817 | READ_BUF(argp->taglen + 8); |
1818 | SAVEMEM(argp->tag, argp->taglen); | |
06553991 BF |
1819 | argp->minorversion = be32_to_cpup(p++); |
1820 | argp->opcnt = be32_to_cpup(p++); | |
4f0cefbf | 1821 | max_reply += 4 + (XDR_QUADLEN(argp->taglen) << 2); |
1da177e4 LT |
1822 | |
1823 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1824 | goto xdr_error; | |
1825 | if (argp->opcnt > 100) | |
1826 | goto xdr_error; | |
1827 | ||
e8c96f8c | 1828 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
5d6031ca | 1829 | argp->ops = kzalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1da177e4 LT |
1830 | if (!argp->ops) { |
1831 | argp->ops = argp->iops; | |
817cb9d4 | 1832 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1833 | goto xdr_error; |
1834 | } | |
1835 | } | |
1836 | ||
e1a90ebd | 1837 | if (argp->minorversion > NFSD_SUPPORTED_MINOR_VERSION) |
30cff1ff BH |
1838 | argp->opcnt = 0; |
1839 | ||
1da177e4 LT |
1840 | for (i = 0; i < argp->opcnt; i++) { |
1841 | op = &argp->ops[i]; | |
1842 | op->replay = NULL; | |
1843 | ||
8a61b18c | 1844 | READ_BUF(4); |
06553991 | 1845 | op->opnum = be32_to_cpup(p++); |
1da177e4 | 1846 | |
e1a90ebd AS |
1847 | if (nfsd4_opnum_in_range(argp, op)) |
1848 | op->status = nfsd4_dec_ops[op->opnum](argp, &op->u); | |
347e0ad9 | 1849 | else { |
1da177e4 LT |
1850 | op->opnum = OP_ILLEGAL; |
1851 | op->status = nfserr_op_illegal; | |
1da177e4 | 1852 | } |
1091006c BF |
1853 | /* |
1854 | * We'll try to cache the result in the DRC if any one | |
1855 | * op in the compound wants to be cached: | |
1856 | */ | |
1857 | cachethis |= nfsd4_cache_this_op(op); | |
6ff40dec | 1858 | |
b0e35fda BF |
1859 | if (op->opnum == OP_READ) { |
1860 | readcount++; | |
1861 | readbytes += nfsd4_max_reply(argp->rqstp, op); | |
1862 | } else | |
1863 | max_reply += nfsd4_max_reply(argp->rqstp, op); | |
f7b43d0c BF |
1864 | /* |
1865 | * OP_LOCK may return a conflicting lock. (Special case | |
1866 | * because it will just skip encoding this if it runs | |
1867 | * out of xdr buffer space, and it is the only operation | |
1868 | * that behaves this way.) | |
1869 | */ | |
1870 | if (op->opnum == OP_LOCK) | |
1871 | max_reply += NFS4_OPAQUE_LIMIT; | |
e372ba60 BF |
1872 | |
1873 | if (op->status) { | |
1874 | argp->opcnt = i+1; | |
1875 | break; | |
1876 | } | |
1da177e4 | 1877 | } |
1091006c BF |
1878 | /* Sessions make the DRC unnecessary: */ |
1879 | if (argp->minorversion) | |
1880 | cachethis = false; | |
b0e35fda | 1881 | svc_reserve(argp->rqstp, max_reply + readbytes); |
1091006c | 1882 | argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; |
1da177e4 | 1883 | |
a5cddc88 | 1884 | if (readcount > 1 || max_reply > PAGE_SIZE - auth_slack) |
779fb0f3 | 1885 | clear_bit(RQ_SPLICE_OK, &argp->rqstp->rq_flags); |
b0e35fda | 1886 | |
1da177e4 LT |
1887 | DECODE_TAIL; |
1888 | } | |
1da177e4 | 1889 | |
d05d5744 | 1890 | static __be32 *encode_change(__be32 *p, struct kstat *stat, struct inode *inode) |
c654b8a9 BF |
1891 | { |
1892 | if (IS_I_VERSION(inode)) { | |
d05d5744 | 1893 | p = xdr_encode_hyper(p, inode->i_version); |
c654b8a9 | 1894 | } else { |
d05d5744 BF |
1895 | *p++ = cpu_to_be32(stat->ctime.tv_sec); |
1896 | *p++ = cpu_to_be32(stat->ctime.tv_nsec); | |
c654b8a9 | 1897 | } |
d05d5744 | 1898 | return p; |
c654b8a9 BF |
1899 | } |
1900 | ||
d05d5744 | 1901 | static __be32 *encode_cinfo(__be32 *p, struct nfsd4_change_info *c) |
c654b8a9 | 1902 | { |
d05d5744 | 1903 | *p++ = cpu_to_be32(c->atomic); |
c654b8a9 | 1904 | if (c->change_supported) { |
d05d5744 BF |
1905 | p = xdr_encode_hyper(p, c->before_change); |
1906 | p = xdr_encode_hyper(p, c->after_change); | |
c654b8a9 | 1907 | } else { |
d05d5744 BF |
1908 | *p++ = cpu_to_be32(c->before_ctime_sec); |
1909 | *p++ = cpu_to_be32(c->before_ctime_nsec); | |
1910 | *p++ = cpu_to_be32(c->after_ctime_sec); | |
1911 | *p++ = cpu_to_be32(c->after_ctime_nsec); | |
c654b8a9 | 1912 | } |
d05d5744 | 1913 | return p; |
c654b8a9 | 1914 | } |
1da177e4 | 1915 | |
81c3f413 | 1916 | /* Encode as an array of strings the string given with components |
e7a0444a | 1917 | * separated @sep, escaped with esc_enter and esc_exit. |
81c3f413 | 1918 | */ |
ddd1ea56 BF |
1919 | static __be32 nfsd4_encode_components_esc(struct xdr_stream *xdr, char sep, |
1920 | char *components, char esc_enter, | |
1921 | char esc_exit) | |
81c3f413 | 1922 | { |
ddd1ea56 | 1923 | __be32 *p; |
082d4bd7 BF |
1924 | __be32 pathlen; |
1925 | int pathlen_offset; | |
81c3f413 | 1926 | int strlen, count=0; |
e7a0444a | 1927 | char *str, *end, *next; |
81c3f413 BF |
1928 | |
1929 | dprintk("nfsd4_encode_components(%s)\n", components); | |
082d4bd7 BF |
1930 | |
1931 | pathlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
1932 | p = xdr_reserve_space(xdr, 4); |
1933 | if (!p) | |
81c3f413 | 1934 | return nfserr_resource; |
082d4bd7 BF |
1935 | p++; /* We will fill this in with @count later */ |
1936 | ||
81c3f413 BF |
1937 | end = str = components; |
1938 | while (*end) { | |
e7a0444a WAA |
1939 | bool found_esc = false; |
1940 | ||
1941 | /* try to parse as esc_start, ..., esc_end, sep */ | |
1942 | if (*str == esc_enter) { | |
1943 | for (; *end && (*end != esc_exit); end++) | |
1944 | /* find esc_exit or end of string */; | |
1945 | next = end + 1; | |
1946 | if (*end && (!*next || *next == sep)) { | |
1947 | str++; | |
1948 | found_esc = true; | |
1949 | } | |
1950 | } | |
1951 | ||
1952 | if (!found_esc) | |
1953 | for (; *end && (*end != sep); end++) | |
1954 | /* find sep or end of string */; | |
1955 | ||
81c3f413 BF |
1956 | strlen = end - str; |
1957 | if (strlen) { | |
ddd1ea56 BF |
1958 | p = xdr_reserve_space(xdr, strlen + 4); |
1959 | if (!p) | |
81c3f413 | 1960 | return nfserr_resource; |
0c0c267b | 1961 | p = xdr_encode_opaque(p, str, strlen); |
81c3f413 BF |
1962 | count++; |
1963 | } | |
1964 | else | |
1965 | end++; | |
5a64e569 BC |
1966 | if (found_esc) |
1967 | end = next; | |
1968 | ||
81c3f413 BF |
1969 | str = end; |
1970 | } | |
bf7491f1 | 1971 | pathlen = htonl(count); |
082d4bd7 | 1972 | write_bytes_to_xdr_buf(xdr->buf, pathlen_offset, &pathlen, 4); |
81c3f413 BF |
1973 | return 0; |
1974 | } | |
1975 | ||
e7a0444a WAA |
1976 | /* Encode as an array of strings the string given with components |
1977 | * separated @sep. | |
1978 | */ | |
ddd1ea56 BF |
1979 | static __be32 nfsd4_encode_components(struct xdr_stream *xdr, char sep, |
1980 | char *components) | |
e7a0444a | 1981 | { |
ddd1ea56 | 1982 | return nfsd4_encode_components_esc(xdr, sep, components, 0, 0); |
e7a0444a WAA |
1983 | } |
1984 | ||
81c3f413 BF |
1985 | /* |
1986 | * encode a location element of a fs_locations structure | |
1987 | */ | |
ddd1ea56 BF |
1988 | static __be32 nfsd4_encode_fs_location4(struct xdr_stream *xdr, |
1989 | struct nfsd4_fs_location *location) | |
81c3f413 | 1990 | { |
b37ad28b | 1991 | __be32 status; |
81c3f413 | 1992 | |
ddd1ea56 | 1993 | status = nfsd4_encode_components_esc(xdr, ':', location->hosts, |
e7a0444a | 1994 | '[', ']'); |
81c3f413 BF |
1995 | if (status) |
1996 | return status; | |
ddd1ea56 | 1997 | status = nfsd4_encode_components(xdr, '/', location->path); |
81c3f413 BF |
1998 | if (status) |
1999 | return status; | |
81c3f413 BF |
2000 | return 0; |
2001 | } | |
2002 | ||
2003 | /* | |
ed748aac | 2004 | * Encode a path in RFC3530 'pathname4' format |
81c3f413 | 2005 | */ |
ddd1ea56 BF |
2006 | static __be32 nfsd4_encode_path(struct xdr_stream *xdr, |
2007 | const struct path *root, | |
2008 | const struct path *path) | |
81c3f413 | 2009 | { |
301f0268 | 2010 | struct path cur = *path; |
ddd1ea56 | 2011 | __be32 *p; |
ed748aac TM |
2012 | struct dentry **components = NULL; |
2013 | unsigned int ncomponents = 0; | |
2014 | __be32 err = nfserr_jukebox; | |
81c3f413 | 2015 | |
ed748aac | 2016 | dprintk("nfsd4_encode_components("); |
81c3f413 | 2017 | |
ed748aac TM |
2018 | path_get(&cur); |
2019 | /* First walk the path up to the nfsd root, and store the | |
2020 | * dentries/path components in an array. | |
2021 | */ | |
2022 | for (;;) { | |
b77a4b2e | 2023 | if (path_equal(&cur, root)) |
ed748aac TM |
2024 | break; |
2025 | if (cur.dentry == cur.mnt->mnt_root) { | |
2026 | if (follow_up(&cur)) | |
2027 | continue; | |
2028 | goto out_free; | |
2029 | } | |
2030 | if ((ncomponents & 15) == 0) { | |
2031 | struct dentry **new; | |
2032 | new = krealloc(components, | |
2033 | sizeof(*new) * (ncomponents + 16), | |
2034 | GFP_KERNEL); | |
2035 | if (!new) | |
2036 | goto out_free; | |
2037 | components = new; | |
2038 | } | |
2039 | components[ncomponents++] = cur.dentry; | |
2040 | cur.dentry = dget_parent(cur.dentry); | |
2041 | } | |
ddd1ea56 BF |
2042 | err = nfserr_resource; |
2043 | p = xdr_reserve_space(xdr, 4); | |
2044 | if (!p) | |
ed748aac | 2045 | goto out_free; |
c373b0a4 | 2046 | *p++ = cpu_to_be32(ncomponents); |
ed748aac TM |
2047 | |
2048 | while (ncomponents) { | |
2049 | struct dentry *dentry = components[ncomponents - 1]; | |
301f0268 | 2050 | unsigned int len; |
ed748aac | 2051 | |
301f0268 AV |
2052 | spin_lock(&dentry->d_lock); |
2053 | len = dentry->d_name.len; | |
ddd1ea56 BF |
2054 | p = xdr_reserve_space(xdr, len + 4); |
2055 | if (!p) { | |
301f0268 | 2056 | spin_unlock(&dentry->d_lock); |
ed748aac | 2057 | goto out_free; |
301f0268 | 2058 | } |
0c0c267b | 2059 | p = xdr_encode_opaque(p, dentry->d_name.name, len); |
a455589f | 2060 | dprintk("/%pd", dentry); |
301f0268 | 2061 | spin_unlock(&dentry->d_lock); |
ed748aac TM |
2062 | dput(dentry); |
2063 | ncomponents--; | |
81c3f413 | 2064 | } |
ed748aac | 2065 | |
ed748aac TM |
2066 | err = 0; |
2067 | out_free: | |
2068 | dprintk(")\n"); | |
2069 | while (ncomponents) | |
2070 | dput(components[--ncomponents]); | |
2071 | kfree(components); | |
2072 | path_put(&cur); | |
2073 | return err; | |
2074 | } | |
2075 | ||
ddd1ea56 BF |
2076 | static __be32 nfsd4_encode_fsloc_fsroot(struct xdr_stream *xdr, |
2077 | struct svc_rqst *rqstp, const struct path *path) | |
ed748aac TM |
2078 | { |
2079 | struct svc_export *exp_ps; | |
2080 | __be32 res; | |
2081 | ||
2082 | exp_ps = rqst_find_fsidzero_export(rqstp); | |
2083 | if (IS_ERR(exp_ps)) | |
2084 | return nfserrno(PTR_ERR(exp_ps)); | |
ddd1ea56 | 2085 | res = nfsd4_encode_path(xdr, &exp_ps->ex_path, path); |
ed748aac TM |
2086 | exp_put(exp_ps); |
2087 | return res; | |
81c3f413 BF |
2088 | } |
2089 | ||
2090 | /* | |
2091 | * encode a fs_locations structure | |
2092 | */ | |
ddd1ea56 BF |
2093 | static __be32 nfsd4_encode_fs_locations(struct xdr_stream *xdr, |
2094 | struct svc_rqst *rqstp, struct svc_export *exp) | |
81c3f413 | 2095 | { |
b37ad28b | 2096 | __be32 status; |
cc45f017 | 2097 | int i; |
ddd1ea56 | 2098 | __be32 *p; |
81c3f413 | 2099 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
81c3f413 | 2100 | |
ddd1ea56 | 2101 | status = nfsd4_encode_fsloc_fsroot(xdr, rqstp, &exp->ex_path); |
81c3f413 BF |
2102 | if (status) |
2103 | return status; | |
ddd1ea56 BF |
2104 | p = xdr_reserve_space(xdr, 4); |
2105 | if (!p) | |
81c3f413 | 2106 | return nfserr_resource; |
c373b0a4 | 2107 | *p++ = cpu_to_be32(fslocs->locations_count); |
81c3f413 | 2108 | for (i=0; i<fslocs->locations_count; i++) { |
ddd1ea56 | 2109 | status = nfsd4_encode_fs_location4(xdr, &fslocs->locations[i]); |
81c3f413 BF |
2110 | if (status) |
2111 | return status; | |
2112 | } | |
81c3f413 BF |
2113 | return 0; |
2114 | } | |
1da177e4 | 2115 | |
3d2544b1 BF |
2116 | static u32 nfs4_file_type(umode_t mode) |
2117 | { | |
2118 | switch (mode & S_IFMT) { | |
2119 | case S_IFIFO: return NF4FIFO; | |
2120 | case S_IFCHR: return NF4CHR; | |
2121 | case S_IFDIR: return NF4DIR; | |
2122 | case S_IFBLK: return NF4BLK; | |
2123 | case S_IFLNK: return NF4LNK; | |
2124 | case S_IFREG: return NF4REG; | |
2125 | case S_IFSOCK: return NF4SOCK; | |
2126 | default: return NF4BAD; | |
2127 | }; | |
2128 | } | |
1da177e4 | 2129 | |
b37ad28b | 2130 | static inline __be32 |
ddd1ea56 BF |
2131 | nfsd4_encode_aclname(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2132 | struct nfs4_ace *ace) | |
1da177e4 | 2133 | { |
3554116d | 2134 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ddd1ea56 | 2135 | return nfs4_acl_write_who(xdr, ace->whotype); |
3554116d | 2136 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
ddd1ea56 | 2137 | return nfsd4_encode_group(xdr, rqstp, ace->who_gid); |
3554116d | 2138 | else |
ddd1ea56 | 2139 | return nfsd4_encode_user(xdr, rqstp, ace->who_uid); |
1da177e4 LT |
2140 | } |
2141 | ||
42ca0993 BF |
2142 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
2143 | FATTR4_WORD0_RDATTR_ERROR) | |
2144 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
2145 | ||
18032ca0 DQ |
2146 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
2147 | static inline __be32 | |
ddd1ea56 BF |
2148 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2149 | void *context, int len) | |
18032ca0 | 2150 | { |
ddd1ea56 | 2151 | __be32 *p; |
18032ca0 | 2152 | |
ddd1ea56 BF |
2153 | p = xdr_reserve_space(xdr, len + 4 + 4 + 4); |
2154 | if (!p) | |
18032ca0 DQ |
2155 | return nfserr_resource; |
2156 | ||
2157 | /* | |
2158 | * For now we use a 0 here to indicate the null translation; in | |
2159 | * the future we may place a call to translation code here. | |
2160 | */ | |
c373b0a4 BF |
2161 | *p++ = cpu_to_be32(0); /* lfs */ |
2162 | *p++ = cpu_to_be32(0); /* pi */ | |
18032ca0 | 2163 | p = xdr_encode_opaque(p, context, len); |
18032ca0 DQ |
2164 | return 0; |
2165 | } | |
2166 | #else | |
2167 | static inline __be32 | |
ddd1ea56 BF |
2168 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2169 | void *context, int len) | |
18032ca0 DQ |
2170 | { return 0; } |
2171 | #endif | |
2172 | ||
b37ad28b | 2173 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
42ca0993 BF |
2174 | { |
2175 | /* As per referral draft: */ | |
2176 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
2177 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
2178 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
2179 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
2180 | *rdattr_err = NFSERR_MOVED; | |
2181 | else | |
2182 | return nfserr_moved; | |
2183 | } | |
2184 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
2185 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
2186 | return 0; | |
2187 | } | |
1da177e4 | 2188 | |
ae7095a7 BF |
2189 | |
2190 | static int get_parent_attributes(struct svc_export *exp, struct kstat *stat) | |
2191 | { | |
2192 | struct path path = exp->ex_path; | |
2193 | int err; | |
2194 | ||
2195 | path_get(&path); | |
2196 | while (follow_up(&path)) { | |
2197 | if (path.dentry != path.mnt->mnt_root) | |
2198 | break; | |
2199 | } | |
3dadecce | 2200 | err = vfs_getattr(&path, stat); |
ae7095a7 BF |
2201 | path_put(&path); |
2202 | return err; | |
2203 | } | |
2204 | ||
1da177e4 LT |
2205 | /* |
2206 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
2207 | * ourselves. | |
1da177e4 | 2208 | */ |
da2ebce6 | 2209 | static __be32 |
d5184658 BF |
2210 | nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp, |
2211 | struct svc_export *exp, | |
2212 | struct dentry *dentry, u32 *bmval, | |
406a7ea9 | 2213 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
2214 | { |
2215 | u32 bmval0 = bmval[0]; | |
2216 | u32 bmval1 = bmval[1]; | |
7e705706 | 2217 | u32 bmval2 = bmval[2]; |
1da177e4 | 2218 | struct kstat stat; |
d50e6136 | 2219 | struct svc_fh *tempfh = NULL; |
1da177e4 | 2220 | struct kstatfs statfs; |
ddd1ea56 | 2221 | __be32 *p; |
1fcea5b2 | 2222 | int starting_len = xdr->buf->len; |
082d4bd7 BF |
2223 | int attrlen_offset; |
2224 | __be32 attrlen; | |
1da177e4 LT |
2225 | u32 dummy; |
2226 | u64 dummy64; | |
42ca0993 | 2227 | u32 rdattr_err = 0; |
b37ad28b | 2228 | __be32 status; |
b8dd7b9a | 2229 | int err; |
1da177e4 LT |
2230 | int aclsupport = 0; |
2231 | struct nfs4_acl *acl = NULL; | |
18032ca0 DQ |
2232 | void *context = NULL; |
2233 | int contextlen; | |
2234 | bool contextsupport = false; | |
7e705706 AA |
2235 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
2236 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
2237 | struct path path = { |
2238 | .mnt = exp->ex_path.mnt, | |
2239 | .dentry = dentry, | |
2240 | }; | |
3d733711 | 2241 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
1da177e4 LT |
2242 | |
2243 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
7e705706 AA |
2244 | BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); |
2245 | BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); | |
2246 | BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); | |
1da177e4 | 2247 | |
42ca0993 | 2248 | if (exp->ex_fslocs.migrated) { |
7e705706 | 2249 | BUG_ON(bmval[2]); |
42ca0993 BF |
2250 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); |
2251 | if (status) | |
2252 | goto out; | |
2253 | } | |
2254 | ||
3dadecce | 2255 | err = vfs_getattr(&path, &stat); |
b8dd7b9a | 2256 | if (err) |
1da177e4 | 2257 | goto out_nfserr; |
12337901 CH |
2258 | if ((bmval0 & (FATTR4_WORD0_FILES_AVAIL | FATTR4_WORD0_FILES_FREE | |
2259 | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
2260 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
2261 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 2262 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 2263 | if (err) |
1da177e4 LT |
2264 | goto out_nfserr; |
2265 | } | |
2266 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
d50e6136 BF |
2267 | tempfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); |
2268 | status = nfserr_jukebox; | |
2269 | if (!tempfh) | |
2270 | goto out; | |
2271 | fh_init(tempfh, NFS4_FHSIZE); | |
2272 | status = fh_compose(tempfh, exp, dentry, NULL); | |
1da177e4 LT |
2273 | if (status) |
2274 | goto out; | |
d50e6136 | 2275 | fhp = tempfh; |
1da177e4 LT |
2276 | } |
2277 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
2278 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
b8dd7b9a AV |
2279 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
2280 | aclsupport = (err == 0); | |
1da177e4 | 2281 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 2282 | if (err == -EOPNOTSUPP) |
1da177e4 | 2283 | bmval0 &= ~FATTR4_WORD0_ACL; |
b8dd7b9a | 2284 | else if (err == -EINVAL) { |
1da177e4 LT |
2285 | status = nfserr_attrnotsupp; |
2286 | goto out; | |
b8dd7b9a | 2287 | } else if (err != 0) |
1da177e4 LT |
2288 | goto out_nfserr; |
2289 | } | |
2290 | } | |
1da177e4 | 2291 | |
18032ca0 DQ |
2292 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
2293 | if ((bmval[2] & FATTR4_WORD2_SECURITY_LABEL) || | |
2294 | bmval[0] & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
2295 | err = security_inode_getsecctx(dentry->d_inode, | |
2296 | &context, &contextlen); | |
2297 | contextsupport = (err == 0); | |
2298 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { | |
2299 | if (err == -EOPNOTSUPP) | |
2300 | bmval2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2301 | else if (err) | |
2302 | goto out_nfserr; | |
2303 | } | |
2304 | } | |
2305 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ | |
2306 | ||
2b44f1ba | 2307 | if (bmval2) { |
ddd1ea56 BF |
2308 | p = xdr_reserve_space(xdr, 16); |
2309 | if (!p) | |
2b44f1ba | 2310 | goto out_resource; |
c373b0a4 BF |
2311 | *p++ = cpu_to_be32(3); |
2312 | *p++ = cpu_to_be32(bmval0); | |
2313 | *p++ = cpu_to_be32(bmval1); | |
2314 | *p++ = cpu_to_be32(bmval2); | |
2b44f1ba | 2315 | } else if (bmval1) { |
ddd1ea56 BF |
2316 | p = xdr_reserve_space(xdr, 12); |
2317 | if (!p) | |
2b44f1ba | 2318 | goto out_resource; |
c373b0a4 BF |
2319 | *p++ = cpu_to_be32(2); |
2320 | *p++ = cpu_to_be32(bmval0); | |
2321 | *p++ = cpu_to_be32(bmval1); | |
7e705706 | 2322 | } else { |
ddd1ea56 BF |
2323 | p = xdr_reserve_space(xdr, 8); |
2324 | if (!p) | |
2b44f1ba | 2325 | goto out_resource; |
c373b0a4 BF |
2326 | *p++ = cpu_to_be32(1); |
2327 | *p++ = cpu_to_be32(bmval0); | |
7e705706 | 2328 | } |
082d4bd7 BF |
2329 | |
2330 | attrlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
2331 | p = xdr_reserve_space(xdr, 4); |
2332 | if (!p) | |
2333 | goto out_resource; | |
082d4bd7 | 2334 | p++; /* to be backfilled later */ |
1da177e4 LT |
2335 | |
2336 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
7e705706 AA |
2337 | u32 word0 = nfsd_suppattrs0(minorversion); |
2338 | u32 word1 = nfsd_suppattrs1(minorversion); | |
2339 | u32 word2 = nfsd_suppattrs2(minorversion); | |
2340 | ||
42ca0993 BF |
2341 | if (!aclsupport) |
2342 | word0 &= ~FATTR4_WORD0_ACL; | |
18032ca0 DQ |
2343 | if (!contextsupport) |
2344 | word2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
7e705706 | 2345 | if (!word2) { |
ddd1ea56 BF |
2346 | p = xdr_reserve_space(xdr, 12); |
2347 | if (!p) | |
2b44f1ba | 2348 | goto out_resource; |
c373b0a4 BF |
2349 | *p++ = cpu_to_be32(2); |
2350 | *p++ = cpu_to_be32(word0); | |
2351 | *p++ = cpu_to_be32(word1); | |
7e705706 | 2352 | } else { |
ddd1ea56 BF |
2353 | p = xdr_reserve_space(xdr, 16); |
2354 | if (!p) | |
2b44f1ba | 2355 | goto out_resource; |
c373b0a4 BF |
2356 | *p++ = cpu_to_be32(3); |
2357 | *p++ = cpu_to_be32(word0); | |
2358 | *p++ = cpu_to_be32(word1); | |
2359 | *p++ = cpu_to_be32(word2); | |
7e705706 | 2360 | } |
1da177e4 LT |
2361 | } |
2362 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
ddd1ea56 BF |
2363 | p = xdr_reserve_space(xdr, 4); |
2364 | if (!p) | |
1da177e4 | 2365 | goto out_resource; |
3d2544b1 | 2366 | dummy = nfs4_file_type(stat.mode); |
6b6d8137 BF |
2367 | if (dummy == NF4BAD) { |
2368 | status = nfserr_serverfault; | |
2369 | goto out; | |
2370 | } | |
c373b0a4 | 2371 | *p++ = cpu_to_be32(dummy); |
1da177e4 LT |
2372 | } |
2373 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
ddd1ea56 BF |
2374 | p = xdr_reserve_space(xdr, 4); |
2375 | if (!p) | |
1da177e4 | 2376 | goto out_resource; |
49640001 | 2377 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
c373b0a4 | 2378 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT); |
49640001 | 2379 | else |
c373b0a4 BF |
2380 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT| |
2381 | NFS4_FH_VOL_RENAME); | |
1da177e4 LT |
2382 | } |
2383 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
ddd1ea56 BF |
2384 | p = xdr_reserve_space(xdr, 8); |
2385 | if (!p) | |
1da177e4 | 2386 | goto out_resource; |
d05d5744 | 2387 | p = encode_change(p, &stat, dentry->d_inode); |
1da177e4 LT |
2388 | } |
2389 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
ddd1ea56 BF |
2390 | p = xdr_reserve_space(xdr, 8); |
2391 | if (!p) | |
1da177e4 | 2392 | goto out_resource; |
b64c7f3b | 2393 | p = xdr_encode_hyper(p, stat.size); |
1da177e4 LT |
2394 | } |
2395 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
ddd1ea56 BF |
2396 | p = xdr_reserve_space(xdr, 4); |
2397 | if (!p) | |
1da177e4 | 2398 | goto out_resource; |
c373b0a4 | 2399 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2400 | } |
2401 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
ddd1ea56 BF |
2402 | p = xdr_reserve_space(xdr, 4); |
2403 | if (!p) | |
1da177e4 | 2404 | goto out_resource; |
c373b0a4 | 2405 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2406 | } |
2407 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
ddd1ea56 BF |
2408 | p = xdr_reserve_space(xdr, 4); |
2409 | if (!p) | |
1da177e4 | 2410 | goto out_resource; |
c373b0a4 | 2411 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2412 | } |
2413 | if (bmval0 & FATTR4_WORD0_FSID) { | |
ddd1ea56 BF |
2414 | p = xdr_reserve_space(xdr, 16); |
2415 | if (!p) | |
1da177e4 | 2416 | goto out_resource; |
42ca0993 | 2417 | if (exp->ex_fslocs.migrated) { |
b64c7f3b BF |
2418 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MAJOR); |
2419 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
2420 | } else switch(fsid_source(fhp)) { |
2421 | case FSIDSOURCE_FSID: | |
b64c7f3b BF |
2422 | p = xdr_encode_hyper(p, (u64)exp->ex_fsid); |
2423 | p = xdr_encode_hyper(p, (u64)0); | |
af6a4e28 N |
2424 | break; |
2425 | case FSIDSOURCE_DEV: | |
c373b0a4 BF |
2426 | *p++ = cpu_to_be32(0); |
2427 | *p++ = cpu_to_be32(MAJOR(stat.dev)); | |
2428 | *p++ = cpu_to_be32(0); | |
2429 | *p++ = cpu_to_be32(MINOR(stat.dev)); | |
af6a4e28 N |
2430 | break; |
2431 | case FSIDSOURCE_UUID: | |
94eb3689 KM |
2432 | p = xdr_encode_opaque_fixed(p, exp->ex_uuid, |
2433 | EX_UUID_LEN); | |
af6a4e28 | 2434 | break; |
1da177e4 LT |
2435 | } |
2436 | } | |
2437 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
ddd1ea56 BF |
2438 | p = xdr_reserve_space(xdr, 4); |
2439 | if (!p) | |
1da177e4 | 2440 | goto out_resource; |
c373b0a4 | 2441 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2442 | } |
2443 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
ddd1ea56 BF |
2444 | p = xdr_reserve_space(xdr, 4); |
2445 | if (!p) | |
1da177e4 | 2446 | goto out_resource; |
c373b0a4 | 2447 | *p++ = cpu_to_be32(nn->nfsd4_lease); |
1da177e4 LT |
2448 | } |
2449 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
ddd1ea56 BF |
2450 | p = xdr_reserve_space(xdr, 4); |
2451 | if (!p) | |
1da177e4 | 2452 | goto out_resource; |
c373b0a4 | 2453 | *p++ = cpu_to_be32(rdattr_err); |
1da177e4 LT |
2454 | } |
2455 | if (bmval0 & FATTR4_WORD0_ACL) { | |
2456 | struct nfs4_ace *ace; | |
1da177e4 LT |
2457 | |
2458 | if (acl == NULL) { | |
ddd1ea56 BF |
2459 | p = xdr_reserve_space(xdr, 4); |
2460 | if (!p) | |
1da177e4 LT |
2461 | goto out_resource; |
2462 | ||
c373b0a4 | 2463 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2464 | goto out_acl; |
2465 | } | |
ddd1ea56 BF |
2466 | p = xdr_reserve_space(xdr, 4); |
2467 | if (!p) | |
1da177e4 | 2468 | goto out_resource; |
c373b0a4 | 2469 | *p++ = cpu_to_be32(acl->naces); |
1da177e4 | 2470 | |
28e05dd8 | 2471 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
ddd1ea56 BF |
2472 | p = xdr_reserve_space(xdr, 4*3); |
2473 | if (!p) | |
1da177e4 | 2474 | goto out_resource; |
c373b0a4 BF |
2475 | *p++ = cpu_to_be32(ace->type); |
2476 | *p++ = cpu_to_be32(ace->flag); | |
2477 | *p++ = cpu_to_be32(ace->access_mask & | |
2478 | NFS4_ACE_MASK_ALL); | |
ddd1ea56 | 2479 | status = nfsd4_encode_aclname(xdr, rqstp, ace); |
1da177e4 LT |
2480 | if (status) |
2481 | goto out; | |
2482 | } | |
2483 | } | |
2484 | out_acl: | |
2485 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
ddd1ea56 BF |
2486 | p = xdr_reserve_space(xdr, 4); |
2487 | if (!p) | |
1da177e4 | 2488 | goto out_resource; |
c373b0a4 | 2489 | *p++ = cpu_to_be32(aclsupport ? |
1da177e4 LT |
2490 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); |
2491 | } | |
2492 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
ddd1ea56 BF |
2493 | p = xdr_reserve_space(xdr, 4); |
2494 | if (!p) | |
1da177e4 | 2495 | goto out_resource; |
c373b0a4 | 2496 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2497 | } |
2498 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
ddd1ea56 BF |
2499 | p = xdr_reserve_space(xdr, 4); |
2500 | if (!p) | |
1da177e4 | 2501 | goto out_resource; |
c373b0a4 | 2502 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2503 | } |
2504 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
ddd1ea56 BF |
2505 | p = xdr_reserve_space(xdr, 4); |
2506 | if (!p) | |
1da177e4 | 2507 | goto out_resource; |
c373b0a4 | 2508 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2509 | } |
2510 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
ddd1ea56 BF |
2511 | p = xdr_reserve_space(xdr, 4); |
2512 | if (!p) | |
1da177e4 | 2513 | goto out_resource; |
c373b0a4 | 2514 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2515 | } |
2516 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
ddd1ea56 BF |
2517 | p = xdr_reserve_space(xdr, fhp->fh_handle.fh_size + 4); |
2518 | if (!p) | |
1da177e4 | 2519 | goto out_resource; |
0c0c267b BF |
2520 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, |
2521 | fhp->fh_handle.fh_size); | |
1da177e4 LT |
2522 | } |
2523 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
ddd1ea56 BF |
2524 | p = xdr_reserve_space(xdr, 8); |
2525 | if (!p) | |
1da177e4 | 2526 | goto out_resource; |
b64c7f3b | 2527 | p = xdr_encode_hyper(p, stat.ino); |
1da177e4 LT |
2528 | } |
2529 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
ddd1ea56 BF |
2530 | p = xdr_reserve_space(xdr, 8); |
2531 | if (!p) | |
1da177e4 | 2532 | goto out_resource; |
b64c7f3b | 2533 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
2534 | } |
2535 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
ddd1ea56 BF |
2536 | p = xdr_reserve_space(xdr, 8); |
2537 | if (!p) | |
1da177e4 | 2538 | goto out_resource; |
b64c7f3b | 2539 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
2540 | } |
2541 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
ddd1ea56 BF |
2542 | p = xdr_reserve_space(xdr, 8); |
2543 | if (!p) | |
1da177e4 | 2544 | goto out_resource; |
b64c7f3b | 2545 | p = xdr_encode_hyper(p, (u64) statfs.f_files); |
1da177e4 | 2546 | } |
81c3f413 | 2547 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
ddd1ea56 | 2548 | status = nfsd4_encode_fs_locations(xdr, rqstp, exp); |
81c3f413 BF |
2549 | if (status) |
2550 | goto out; | |
2551 | } | |
1da177e4 | 2552 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
ddd1ea56 BF |
2553 | p = xdr_reserve_space(xdr, 4); |
2554 | if (!p) | |
1da177e4 | 2555 | goto out_resource; |
c373b0a4 | 2556 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2557 | } |
2558 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
ddd1ea56 BF |
2559 | p = xdr_reserve_space(xdr, 8); |
2560 | if (!p) | |
1da177e4 | 2561 | goto out_resource; |
b64c7f3b | 2562 | p = xdr_encode_hyper(p, exp->ex_path.mnt->mnt_sb->s_maxbytes); |
1da177e4 LT |
2563 | } |
2564 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
ddd1ea56 BF |
2565 | p = xdr_reserve_space(xdr, 4); |
2566 | if (!p) | |
1da177e4 | 2567 | goto out_resource; |
c373b0a4 | 2568 | *p++ = cpu_to_be32(255); |
1da177e4 LT |
2569 | } |
2570 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
ddd1ea56 BF |
2571 | p = xdr_reserve_space(xdr, 4); |
2572 | if (!p) | |
1da177e4 | 2573 | goto out_resource; |
c373b0a4 | 2574 | *p++ = cpu_to_be32(statfs.f_namelen); |
1da177e4 LT |
2575 | } |
2576 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
ddd1ea56 BF |
2577 | p = xdr_reserve_space(xdr, 8); |
2578 | if (!p) | |
1da177e4 | 2579 | goto out_resource; |
b64c7f3b | 2580 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2581 | } |
2582 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
ddd1ea56 BF |
2583 | p = xdr_reserve_space(xdr, 8); |
2584 | if (!p) | |
1da177e4 | 2585 | goto out_resource; |
b64c7f3b | 2586 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2587 | } |
2588 | if (bmval1 & FATTR4_WORD1_MODE) { | |
ddd1ea56 BF |
2589 | p = xdr_reserve_space(xdr, 4); |
2590 | if (!p) | |
1da177e4 | 2591 | goto out_resource; |
c373b0a4 | 2592 | *p++ = cpu_to_be32(stat.mode & S_IALLUGO); |
1da177e4 LT |
2593 | } |
2594 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
ddd1ea56 BF |
2595 | p = xdr_reserve_space(xdr, 4); |
2596 | if (!p) | |
1da177e4 | 2597 | goto out_resource; |
c373b0a4 | 2598 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2599 | } |
2600 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
ddd1ea56 BF |
2601 | p = xdr_reserve_space(xdr, 4); |
2602 | if (!p) | |
1da177e4 | 2603 | goto out_resource; |
c373b0a4 | 2604 | *p++ = cpu_to_be32(stat.nlink); |
1da177e4 LT |
2605 | } |
2606 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
ddd1ea56 | 2607 | status = nfsd4_encode_user(xdr, rqstp, stat.uid); |
1da177e4 LT |
2608 | if (status) |
2609 | goto out; | |
2610 | } | |
2611 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
ddd1ea56 | 2612 | status = nfsd4_encode_group(xdr, rqstp, stat.gid); |
1da177e4 LT |
2613 | if (status) |
2614 | goto out; | |
2615 | } | |
2616 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
ddd1ea56 BF |
2617 | p = xdr_reserve_space(xdr, 8); |
2618 | if (!p) | |
1da177e4 | 2619 | goto out_resource; |
c373b0a4 BF |
2620 | *p++ = cpu_to_be32((u32) MAJOR(stat.rdev)); |
2621 | *p++ = cpu_to_be32((u32) MINOR(stat.rdev)); | |
1da177e4 LT |
2622 | } |
2623 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
ddd1ea56 BF |
2624 | p = xdr_reserve_space(xdr, 8); |
2625 | if (!p) | |
1da177e4 LT |
2626 | goto out_resource; |
2627 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
b64c7f3b | 2628 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2629 | } |
2630 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
ddd1ea56 BF |
2631 | p = xdr_reserve_space(xdr, 8); |
2632 | if (!p) | |
1da177e4 LT |
2633 | goto out_resource; |
2634 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
b64c7f3b | 2635 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2636 | } |
2637 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
ddd1ea56 BF |
2638 | p = xdr_reserve_space(xdr, 8); |
2639 | if (!p) | |
1da177e4 LT |
2640 | goto out_resource; |
2641 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
b64c7f3b | 2642 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2643 | } |
2644 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
ddd1ea56 BF |
2645 | p = xdr_reserve_space(xdr, 8); |
2646 | if (!p) | |
1da177e4 LT |
2647 | goto out_resource; |
2648 | dummy64 = (u64)stat.blocks << 9; | |
b64c7f3b | 2649 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2650 | } |
2651 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
ddd1ea56 BF |
2652 | p = xdr_reserve_space(xdr, 12); |
2653 | if (!p) | |
1da177e4 | 2654 | goto out_resource; |
b64c7f3b | 2655 | p = xdr_encode_hyper(p, (s64)stat.atime.tv_sec); |
c373b0a4 | 2656 | *p++ = cpu_to_be32(stat.atime.tv_nsec); |
1da177e4 LT |
2657 | } |
2658 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
ddd1ea56 BF |
2659 | p = xdr_reserve_space(xdr, 12); |
2660 | if (!p) | |
1da177e4 | 2661 | goto out_resource; |
c373b0a4 BF |
2662 | *p++ = cpu_to_be32(0); |
2663 | *p++ = cpu_to_be32(1); | |
2664 | *p++ = cpu_to_be32(0); | |
1da177e4 LT |
2665 | } |
2666 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
ddd1ea56 BF |
2667 | p = xdr_reserve_space(xdr, 12); |
2668 | if (!p) | |
1da177e4 | 2669 | goto out_resource; |
b64c7f3b | 2670 | p = xdr_encode_hyper(p, (s64)stat.ctime.tv_sec); |
c373b0a4 | 2671 | *p++ = cpu_to_be32(stat.ctime.tv_nsec); |
1da177e4 LT |
2672 | } |
2673 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
ddd1ea56 BF |
2674 | p = xdr_reserve_space(xdr, 12); |
2675 | if (!p) | |
1da177e4 | 2676 | goto out_resource; |
b64c7f3b | 2677 | p = xdr_encode_hyper(p, (s64)stat.mtime.tv_sec); |
c373b0a4 | 2678 | *p++ = cpu_to_be32(stat.mtime.tv_nsec); |
1da177e4 LT |
2679 | } |
2680 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
ddd1ea56 BF |
2681 | p = xdr_reserve_space(xdr, 8); |
2682 | if (!p) | |
1da177e4 | 2683 | goto out_resource; |
406a7ea9 FF |
2684 | /* |
2685 | * Get parent's attributes if not ignoring crossmount | |
2686 | * and this is the root of a cross-mounted filesystem. | |
2687 | */ | |
2688 | if (ignore_crossmnt == 0 && | |
ae7095a7 BF |
2689 | dentry == exp->ex_path.mnt->mnt_root) |
2690 | get_parent_attributes(exp, &stat); | |
b64c7f3b | 2691 | p = xdr_encode_hyper(p, stat.ino); |
1da177e4 | 2692 | } |
9cf514cc CH |
2693 | #ifdef CONFIG_NFSD_PNFS |
2694 | if ((bmval1 & FATTR4_WORD1_FS_LAYOUT_TYPES) || | |
2695 | (bmval2 & FATTR4_WORD2_LAYOUT_TYPES)) { | |
2696 | if (exp->ex_layout_type) { | |
2697 | p = xdr_reserve_space(xdr, 8); | |
2698 | if (!p) | |
2699 | goto out_resource; | |
2700 | *p++ = cpu_to_be32(1); | |
2701 | *p++ = cpu_to_be32(exp->ex_layout_type); | |
2702 | } else { | |
2703 | p = xdr_reserve_space(xdr, 4); | |
2704 | if (!p) | |
2705 | goto out_resource; | |
2706 | *p++ = cpu_to_be32(0); | |
2707 | } | |
2708 | } | |
2709 | ||
2710 | if (bmval2 & FATTR4_WORD2_LAYOUT_BLKSIZE) { | |
2711 | p = xdr_reserve_space(xdr, 4); | |
2712 | if (!p) | |
2713 | goto out_resource; | |
2714 | *p++ = cpu_to_be32(stat.blksize); | |
2715 | } | |
2716 | #endif /* CONFIG_NFSD_PNFS */ | |
18032ca0 | 2717 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { |
ddd1ea56 BF |
2718 | status = nfsd4_encode_security_label(xdr, rqstp, context, |
2719 | contextlen); | |
18032ca0 DQ |
2720 | if (status) |
2721 | goto out; | |
2722 | } | |
8c18f205 | 2723 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
ddd1ea56 BF |
2724 | p = xdr_reserve_space(xdr, 16); |
2725 | if (!p) | |
de3997a7 | 2726 | goto out_resource; |
c373b0a4 BF |
2727 | *p++ = cpu_to_be32(3); |
2728 | *p++ = cpu_to_be32(NFSD_SUPPATTR_EXCLCREAT_WORD0); | |
2729 | *p++ = cpu_to_be32(NFSD_SUPPATTR_EXCLCREAT_WORD1); | |
2730 | *p++ = cpu_to_be32(NFSD_SUPPATTR_EXCLCREAT_WORD2); | |
8c18f205 | 2731 | } |
7e705706 | 2732 | |
082d4bd7 BF |
2733 | attrlen = htonl(xdr->buf->len - attrlen_offset - 4); |
2734 | write_bytes_to_xdr_buf(xdr->buf, attrlen_offset, &attrlen, 4); | |
1da177e4 LT |
2735 | status = nfs_ok; |
2736 | ||
2737 | out: | |
ba4e55bb | 2738 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
18032ca0 DQ |
2739 | if (context) |
2740 | security_release_secctx(context, contextlen); | |
ba4e55bb | 2741 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ |
28e05dd8 | 2742 | kfree(acl); |
18df11d0 | 2743 | if (tempfh) { |
d50e6136 | 2744 | fh_put(tempfh); |
18df11d0 YZ |
2745 | kfree(tempfh); |
2746 | } | |
1fcea5b2 BF |
2747 | if (status) |
2748 | xdr_truncate_encode(xdr, starting_len); | |
1da177e4 LT |
2749 | return status; |
2750 | out_nfserr: | |
b8dd7b9a | 2751 | status = nfserrno(err); |
1da177e4 LT |
2752 | goto out; |
2753 | out_resource: | |
1da177e4 LT |
2754 | status = nfserr_resource; |
2755 | goto out; | |
1da177e4 LT |
2756 | } |
2757 | ||
2825a7f9 BF |
2758 | static void svcxdr_init_encode_from_buffer(struct xdr_stream *xdr, |
2759 | struct xdr_buf *buf, __be32 *p, int bytes) | |
2760 | { | |
2761 | xdr->scratch.iov_len = 0; | |
2762 | memset(buf, 0, sizeof(struct xdr_buf)); | |
2763 | buf->head[0].iov_base = p; | |
2764 | buf->head[0].iov_len = 0; | |
2765 | buf->len = 0; | |
2766 | xdr->buf = buf; | |
2767 | xdr->iov = buf->head; | |
2768 | xdr->p = p; | |
2769 | xdr->end = (void *)p + bytes; | |
2770 | buf->buflen = bytes; | |
2771 | } | |
2772 | ||
d5184658 BF |
2773 | __be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words, |
2774 | struct svc_fh *fhp, struct svc_export *exp, | |
2775 | struct dentry *dentry, u32 *bmval, | |
2776 | struct svc_rqst *rqstp, int ignore_crossmnt) | |
2777 | { | |
2825a7f9 | 2778 | struct xdr_buf dummy; |
d5184658 BF |
2779 | struct xdr_stream xdr; |
2780 | __be32 ret; | |
2781 | ||
2825a7f9 | 2782 | svcxdr_init_encode_from_buffer(&xdr, &dummy, *p, words << 2); |
d5184658 BF |
2783 | ret = nfsd4_encode_fattr(&xdr, fhp, exp, dentry, bmval, rqstp, |
2784 | ignore_crossmnt); | |
2785 | *p = xdr.p; | |
2786 | return ret; | |
2787 | } | |
2788 | ||
c0ce6ec8 BF |
2789 | static inline int attributes_need_mount(u32 *bmval) |
2790 | { | |
2791 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2792 | return 1; | |
2793 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2794 | return 1; | |
2795 | return 0; | |
2796 | } | |
2797 | ||
b37ad28b | 2798 | static __be32 |
561f0ed4 BF |
2799 | nfsd4_encode_dirent_fattr(struct xdr_stream *xdr, struct nfsd4_readdir *cd, |
2800 | const char *name, int namlen) | |
1da177e4 LT |
2801 | { |
2802 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2803 | struct dentry *dentry; | |
b37ad28b | 2804 | __be32 nfserr; |
406a7ea9 | 2805 | int ignore_crossmnt = 0; |
1da177e4 LT |
2806 | |
2807 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
2808 | if (IS_ERR(dentry)) | |
2809 | return nfserrno(PTR_ERR(dentry)); | |
b2c0cea6 BF |
2810 | if (!dentry->d_inode) { |
2811 | /* | |
2812 | * nfsd_buffered_readdir drops the i_mutex between | |
2813 | * readdir and calling this callback, leaving a window | |
2814 | * where this directory entry could have gone away. | |
2815 | */ | |
2816 | dput(dentry); | |
2817 | return nfserr_noent; | |
2818 | } | |
1da177e4 LT |
2819 | |
2820 | exp_get(exp); | |
406a7ea9 FF |
2821 | /* |
2822 | * In the case of a mountpoint, the client may be asking for | |
2823 | * attributes that are only properties of the underlying filesystem | |
2824 | * as opposed to the cross-mounted file system. In such a case, | |
2825 | * we will not follow the cross mount and will fill the attribtutes | |
2826 | * directly from the mountpoint dentry. | |
2827 | */ | |
3227fa41 | 2828 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
2829 | int err; |
2830 | ||
3227fa41 BF |
2831 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
2832 | && !attributes_need_mount(cd->rd_bmval)) { | |
2833 | ignore_crossmnt = 1; | |
2834 | goto out_encode; | |
2835 | } | |
dcb488a3 AA |
2836 | /* |
2837 | * Why the heck aren't we just using nfsd_lookup?? | |
2838 | * Different "."/".." handling? Something else? | |
2839 | * At least, add a comment here to explain.... | |
2840 | */ | |
021d3a72 BF |
2841 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
2842 | if (err) { | |
2843 | nfserr = nfserrno(err); | |
1da177e4 LT |
2844 | goto out_put; |
2845 | } | |
dcb488a3 AA |
2846 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
2847 | if (nfserr) | |
2848 | goto out_put; | |
1da177e4 LT |
2849 | |
2850 | } | |
3227fa41 | 2851 | out_encode: |
561f0ed4 | 2852 | nfserr = nfsd4_encode_fattr(xdr, NULL, exp, dentry, cd->rd_bmval, |
406a7ea9 | 2853 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
2854 | out_put: |
2855 | dput(dentry); | |
2856 | exp_put(exp); | |
2857 | return nfserr; | |
2858 | } | |
2859 | ||
2ebbc012 | 2860 | static __be32 * |
561f0ed4 | 2861 | nfsd4_encode_rdattr_error(struct xdr_stream *xdr, __be32 nfserr) |
1da177e4 | 2862 | { |
561f0ed4 BF |
2863 | __be32 *p; |
2864 | ||
c3a45617 | 2865 | p = xdr_reserve_space(xdr, 20); |
561f0ed4 | 2866 | if (!p) |
1da177e4 LT |
2867 | return NULL; |
2868 | *p++ = htonl(2); | |
2869 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
2870 | *p++ = htonl(0); /* bmval1 */ | |
2871 | ||
87915c64 | 2872 | *p++ = htonl(4); /* attribute length */ |
1da177e4 | 2873 | *p++ = nfserr; /* no htonl */ |
1da177e4 LT |
2874 | return p; |
2875 | } | |
2876 | ||
2877 | static int | |
a0ad13ef N |
2878 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
2879 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 2880 | { |
a0ad13ef | 2881 | struct readdir_cd *ccd = ccdv; |
1da177e4 | 2882 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
561f0ed4 BF |
2883 | struct xdr_stream *xdr = cd->xdr; |
2884 | int start_offset = xdr->buf->len; | |
2885 | int cookie_offset; | |
aee37764 | 2886 | u32 name_and_cookie; |
561f0ed4 | 2887 | int entry_bytes; |
b37ad28b | 2888 | __be32 nfserr = nfserr_toosmall; |
561f0ed4 BF |
2889 | __be64 wire_offset; |
2890 | __be32 *p; | |
1da177e4 LT |
2891 | |
2892 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
2893 | if (name && isdotent(name, namlen)) { | |
2894 | cd->common.err = nfs_ok; | |
2895 | return 0; | |
2896 | } | |
2897 | ||
561f0ed4 BF |
2898 | if (cd->cookie_offset) { |
2899 | wire_offset = cpu_to_be64(offset); | |
2900 | write_bytes_to_xdr_buf(xdr->buf, cd->cookie_offset, | |
2901 | &wire_offset, 8); | |
2902 | } | |
1da177e4 | 2903 | |
561f0ed4 BF |
2904 | p = xdr_reserve_space(xdr, 4); |
2905 | if (!p) | |
1da177e4 | 2906 | goto fail; |
1da177e4 | 2907 | *p++ = xdr_one; /* mark entry present */ |
561f0ed4 BF |
2908 | cookie_offset = xdr->buf->len; |
2909 | p = xdr_reserve_space(xdr, 3*4 + namlen); | |
2910 | if (!p) | |
2911 | goto fail; | |
1da177e4 LT |
2912 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
2913 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
2914 | ||
561f0ed4 | 2915 | nfserr = nfsd4_encode_dirent_fattr(xdr, cd, name, namlen); |
1da177e4 LT |
2916 | switch (nfserr) { |
2917 | case nfs_ok: | |
1da177e4 LT |
2918 | break; |
2919 | case nfserr_resource: | |
2920 | nfserr = nfserr_toosmall; | |
2921 | goto fail; | |
b2c0cea6 | 2922 | case nfserr_noent: |
f41c5ad2 | 2923 | xdr_truncate_encode(xdr, start_offset); |
b2c0cea6 | 2924 | goto skip_entry; |
1da177e4 LT |
2925 | default: |
2926 | /* | |
2927 | * If the client requested the RDATTR_ERROR attribute, | |
2928 | * we stuff the error code into this attribute | |
2929 | * and continue. If this attribute was not requested, | |
2930 | * then in accordance with the spec, we fail the | |
2931 | * entire READDIR operation(!) | |
2932 | */ | |
2933 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
2934 | goto fail; | |
561f0ed4 | 2935 | p = nfsd4_encode_rdattr_error(xdr, nfserr); |
34081efc FI |
2936 | if (p == NULL) { |
2937 | nfserr = nfserr_toosmall; | |
1da177e4 | 2938 | goto fail; |
34081efc | 2939 | } |
1da177e4 | 2940 | } |
561f0ed4 BF |
2941 | nfserr = nfserr_toosmall; |
2942 | entry_bytes = xdr->buf->len - start_offset; | |
2943 | if (entry_bytes > cd->rd_maxcount) | |
2944 | goto fail; | |
2945 | cd->rd_maxcount -= entry_bytes; | |
aee37764 BF |
2946 | /* |
2947 | * RFC 3530 14.2.24 describes rd_dircount as only a "hint", so | |
2948 | * let's always let through the first entry, at least: | |
2949 | */ | |
0ec016e3 BF |
2950 | if (!cd->rd_dircount) |
2951 | goto fail; | |
2952 | name_and_cookie = 4 + 4 * XDR_QUADLEN(namlen) + 8; | |
aee37764 BF |
2953 | if (name_and_cookie > cd->rd_dircount && cd->cookie_offset) |
2954 | goto fail; | |
2955 | cd->rd_dircount -= min(cd->rd_dircount, name_and_cookie); | |
0ec016e3 | 2956 | |
561f0ed4 | 2957 | cd->cookie_offset = cookie_offset; |
b2c0cea6 | 2958 | skip_entry: |
1da177e4 LT |
2959 | cd->common.err = nfs_ok; |
2960 | return 0; | |
2961 | fail: | |
561f0ed4 | 2962 | xdr_truncate_encode(xdr, start_offset); |
1da177e4 LT |
2963 | cd->common.err = nfserr; |
2964 | return -EINVAL; | |
2965 | } | |
2966 | ||
d0a381dd BF |
2967 | static __be32 |
2968 | nfsd4_encode_stateid(struct xdr_stream *xdr, stateid_t *sid) | |
e2f282b9 | 2969 | { |
bc749ca4 | 2970 | __be32 *p; |
e2f282b9 | 2971 | |
d0a381dd BF |
2972 | p = xdr_reserve_space(xdr, sizeof(stateid_t)); |
2973 | if (!p) | |
2974 | return nfserr_resource; | |
c373b0a4 | 2975 | *p++ = cpu_to_be32(sid->si_generation); |
0c0c267b BF |
2976 | p = xdr_encode_opaque_fixed(p, &sid->si_opaque, |
2977 | sizeof(stateid_opaque_t)); | |
d0a381dd | 2978 | return 0; |
e2f282b9 BH |
2979 | } |
2980 | ||
695e12f8 | 2981 | static __be32 |
b37ad28b | 2982 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 2983 | { |
d0a381dd | 2984 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2985 | __be32 *p; |
1da177e4 LT |
2986 | |
2987 | if (!nfserr) { | |
d0a381dd BF |
2988 | p = xdr_reserve_space(xdr, 8); |
2989 | if (!p) | |
2990 | return nfserr_resource; | |
c373b0a4 BF |
2991 | *p++ = cpu_to_be32(access->ac_supported); |
2992 | *p++ = cpu_to_be32(access->ac_resp_access); | |
1da177e4 | 2993 | } |
695e12f8 | 2994 | return nfserr; |
1da177e4 LT |
2995 | } |
2996 | ||
1d1bc8f2 BF |
2997 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
2998 | { | |
d0a381dd | 2999 | struct xdr_stream *xdr = &resp->xdr; |
1d1bc8f2 BF |
3000 | __be32 *p; |
3001 | ||
3002 | if (!nfserr) { | |
d0a381dd BF |
3003 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 8); |
3004 | if (!p) | |
3005 | return nfserr_resource; | |
0c0c267b BF |
3006 | p = xdr_encode_opaque_fixed(p, bcts->sessionid.data, |
3007 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 | 3008 | *p++ = cpu_to_be32(bcts->dir); |
6e67b5d1 | 3009 | /* Sorry, we do not yet support RDMA over 4.1: */ |
c373b0a4 | 3010 | *p++ = cpu_to_be32(0); |
1d1bc8f2 BF |
3011 | } |
3012 | return nfserr; | |
3013 | } | |
3014 | ||
695e12f8 | 3015 | static __be32 |
b37ad28b | 3016 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 | 3017 | { |
d0a381dd BF |
3018 | struct xdr_stream *xdr = &resp->xdr; |
3019 | ||
e2f282b9 | 3020 | if (!nfserr) |
d0a381dd | 3021 | nfserr = nfsd4_encode_stateid(xdr, &close->cl_stateid); |
e2f282b9 | 3022 | |
695e12f8 | 3023 | return nfserr; |
1da177e4 LT |
3024 | } |
3025 | ||
3026 | ||
695e12f8 | 3027 | static __be32 |
b37ad28b | 3028 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 3029 | { |
d0a381dd | 3030 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3031 | __be32 *p; |
1da177e4 LT |
3032 | |
3033 | if (!nfserr) { | |
d0a381dd BF |
3034 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
3035 | if (!p) | |
3036 | return nfserr_resource; | |
0c0c267b BF |
3037 | p = xdr_encode_opaque_fixed(p, commit->co_verf.data, |
3038 | NFS4_VERIFIER_SIZE); | |
1da177e4 | 3039 | } |
695e12f8 | 3040 | return nfserr; |
1da177e4 LT |
3041 | } |
3042 | ||
695e12f8 | 3043 | static __be32 |
b37ad28b | 3044 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 3045 | { |
d0a381dd | 3046 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3047 | __be32 *p; |
1da177e4 LT |
3048 | |
3049 | if (!nfserr) { | |
d0a381dd BF |
3050 | p = xdr_reserve_space(xdr, 32); |
3051 | if (!p) | |
3052 | return nfserr_resource; | |
d05d5744 | 3053 | p = encode_cinfo(p, &create->cr_cinfo); |
c373b0a4 BF |
3054 | *p++ = cpu_to_be32(2); |
3055 | *p++ = cpu_to_be32(create->cr_bmval[0]); | |
3056 | *p++ = cpu_to_be32(create->cr_bmval[1]); | |
1da177e4 | 3057 | } |
695e12f8 | 3058 | return nfserr; |
1da177e4 LT |
3059 | } |
3060 | ||
b37ad28b AV |
3061 | static __be32 |
3062 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
3063 | { |
3064 | struct svc_fh *fhp = getattr->ga_fhp; | |
d5184658 | 3065 | struct xdr_stream *xdr = &resp->xdr; |
1da177e4 LT |
3066 | |
3067 | if (nfserr) | |
3068 | return nfserr; | |
3069 | ||
d5184658 BF |
3070 | nfserr = nfsd4_encode_fattr(xdr, fhp, fhp->fh_export, fhp->fh_dentry, |
3071 | getattr->ga_bmval, | |
406a7ea9 | 3072 | resp->rqstp, 0); |
1da177e4 LT |
3073 | return nfserr; |
3074 | } | |
3075 | ||
695e12f8 BH |
3076 | static __be32 |
3077 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 3078 | { |
d0a381dd | 3079 | struct xdr_stream *xdr = &resp->xdr; |
695e12f8 | 3080 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 3081 | unsigned int len; |
bc749ca4 | 3082 | __be32 *p; |
1da177e4 LT |
3083 | |
3084 | if (!nfserr) { | |
3085 | len = fhp->fh_handle.fh_size; | |
d0a381dd BF |
3086 | p = xdr_reserve_space(xdr, len + 4); |
3087 | if (!p) | |
3088 | return nfserr_resource; | |
0c0c267b | 3089 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, len); |
1da177e4 | 3090 | } |
695e12f8 | 3091 | return nfserr; |
1da177e4 LT |
3092 | } |
3093 | ||
3094 | /* | |
3095 | * Including all fields other than the name, a LOCK4denied structure requires | |
3096 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
3097 | */ | |
d0a381dd BF |
3098 | static __be32 |
3099 | nfsd4_encode_lock_denied(struct xdr_stream *xdr, struct nfsd4_lock_denied *ld) | |
1da177e4 | 3100 | { |
7c13f344 | 3101 | struct xdr_netobj *conf = &ld->ld_owner; |
bc749ca4 | 3102 | __be32 *p; |
1da177e4 | 3103 | |
8c7424cf | 3104 | again: |
d0a381dd | 3105 | p = xdr_reserve_space(xdr, 32 + XDR_LEN(conf->len)); |
8c7424cf BF |
3106 | if (!p) { |
3107 | /* | |
3108 | * Don't fail to return the result just because we can't | |
3109 | * return the conflicting open: | |
3110 | */ | |
3111 | if (conf->len) { | |
f98bac5a | 3112 | kfree(conf->data); |
8c7424cf BF |
3113 | conf->len = 0; |
3114 | conf->data = NULL; | |
3115 | goto again; | |
3116 | } | |
d0a381dd | 3117 | return nfserr_resource; |
8c7424cf | 3118 | } |
b64c7f3b BF |
3119 | p = xdr_encode_hyper(p, ld->ld_start); |
3120 | p = xdr_encode_hyper(p, ld->ld_length); | |
c373b0a4 | 3121 | *p++ = cpu_to_be32(ld->ld_type); |
7c13f344 | 3122 | if (conf->len) { |
0c0c267b BF |
3123 | p = xdr_encode_opaque_fixed(p, &ld->ld_clientid, 8); |
3124 | p = xdr_encode_opaque(p, conf->data, conf->len); | |
f98bac5a | 3125 | kfree(conf->data); |
1da177e4 | 3126 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
b64c7f3b | 3127 | p = xdr_encode_hyper(p, (u64)0); /* clientid */ |
c373b0a4 | 3128 | *p++ = cpu_to_be32(0); /* length of owner name */ |
1da177e4 | 3129 | } |
d0a381dd | 3130 | return nfserr_denied; |
1da177e4 LT |
3131 | } |
3132 | ||
695e12f8 | 3133 | static __be32 |
b37ad28b | 3134 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 3135 | { |
d0a381dd BF |
3136 | struct xdr_stream *xdr = &resp->xdr; |
3137 | ||
e2f282b9 | 3138 | if (!nfserr) |
d0a381dd | 3139 | nfserr = nfsd4_encode_stateid(xdr, &lock->lk_resp_stateid); |
e2f282b9 | 3140 | else if (nfserr == nfserr_denied) |
d0a381dd | 3141 | nfserr = nfsd4_encode_lock_denied(xdr, &lock->lk_denied); |
f98bac5a | 3142 | |
695e12f8 | 3143 | return nfserr; |
1da177e4 LT |
3144 | } |
3145 | ||
695e12f8 | 3146 | static __be32 |
b37ad28b | 3147 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 | 3148 | { |
d0a381dd BF |
3149 | struct xdr_stream *xdr = &resp->xdr; |
3150 | ||
1da177e4 | 3151 | if (nfserr == nfserr_denied) |
d0a381dd | 3152 | nfsd4_encode_lock_denied(xdr, &lockt->lt_denied); |
695e12f8 | 3153 | return nfserr; |
1da177e4 LT |
3154 | } |
3155 | ||
695e12f8 | 3156 | static __be32 |
b37ad28b | 3157 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 | 3158 | { |
d0a381dd BF |
3159 | struct xdr_stream *xdr = &resp->xdr; |
3160 | ||
e2f282b9 | 3161 | if (!nfserr) |
d0a381dd | 3162 | nfserr = nfsd4_encode_stateid(xdr, &locku->lu_stateid); |
e2f282b9 | 3163 | |
695e12f8 | 3164 | return nfserr; |
1da177e4 LT |
3165 | } |
3166 | ||
3167 | ||
695e12f8 | 3168 | static __be32 |
b37ad28b | 3169 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 3170 | { |
d0a381dd | 3171 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3172 | __be32 *p; |
1da177e4 LT |
3173 | |
3174 | if (!nfserr) { | |
d0a381dd BF |
3175 | p = xdr_reserve_space(xdr, 20); |
3176 | if (!p) | |
3177 | return nfserr_resource; | |
d05d5744 | 3178 | p = encode_cinfo(p, &link->li_cinfo); |
1da177e4 | 3179 | } |
695e12f8 | 3180 | return nfserr; |
1da177e4 LT |
3181 | } |
3182 | ||
3183 | ||
695e12f8 | 3184 | static __be32 |
b37ad28b | 3185 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 3186 | { |
d0a381dd | 3187 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3188 | __be32 *p; |
1da177e4 LT |
3189 | |
3190 | if (nfserr) | |
3191 | goto out; | |
3192 | ||
d0a381dd BF |
3193 | nfserr = nfsd4_encode_stateid(xdr, &open->op_stateid); |
3194 | if (nfserr) | |
3195 | goto out; | |
3196 | p = xdr_reserve_space(xdr, 40); | |
3197 | if (!p) | |
3198 | return nfserr_resource; | |
d05d5744 | 3199 | p = encode_cinfo(p, &open->op_cinfo); |
c373b0a4 BF |
3200 | *p++ = cpu_to_be32(open->op_rflags); |
3201 | *p++ = cpu_to_be32(2); | |
3202 | *p++ = cpu_to_be32(open->op_bmval[0]); | |
3203 | *p++ = cpu_to_be32(open->op_bmval[1]); | |
3204 | *p++ = cpu_to_be32(open->op_delegate_type); | |
1da177e4 LT |
3205 | |
3206 | switch (open->op_delegate_type) { | |
3207 | case NFS4_OPEN_DELEGATE_NONE: | |
3208 | break; | |
3209 | case NFS4_OPEN_DELEGATE_READ: | |
d0a381dd BF |
3210 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
3211 | if (nfserr) | |
3212 | return nfserr; | |
3213 | p = xdr_reserve_space(xdr, 20); | |
3214 | if (!p) | |
3215 | return nfserr_resource; | |
c373b0a4 | 3216 | *p++ = cpu_to_be32(open->op_recall); |
1da177e4 LT |
3217 | |
3218 | /* | |
3219 | * TODO: ACE's in delegations | |
3220 | */ | |
c373b0a4 BF |
3221 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
3222 | *p++ = cpu_to_be32(0); | |
3223 | *p++ = cpu_to_be32(0); | |
3224 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 LT |
3225 | break; |
3226 | case NFS4_OPEN_DELEGATE_WRITE: | |
d0a381dd BF |
3227 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
3228 | if (nfserr) | |
3229 | return nfserr; | |
3230 | p = xdr_reserve_space(xdr, 32); | |
3231 | if (!p) | |
3232 | return nfserr_resource; | |
c373b0a4 | 3233 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
3234 | |
3235 | /* | |
3236 | * TODO: space_limit's in delegations | |
3237 | */ | |
c373b0a4 BF |
3238 | *p++ = cpu_to_be32(NFS4_LIMIT_SIZE); |
3239 | *p++ = cpu_to_be32(~(u32)0); | |
3240 | *p++ = cpu_to_be32(~(u32)0); | |
1da177e4 LT |
3241 | |
3242 | /* | |
3243 | * TODO: ACE's in delegations | |
3244 | */ | |
c373b0a4 BF |
3245 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
3246 | *p++ = cpu_to_be32(0); | |
3247 | *p++ = cpu_to_be32(0); | |
3248 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 | 3249 | break; |
d24433cd BH |
3250 | case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */ |
3251 | switch (open->op_why_no_deleg) { | |
3252 | case WND4_CONTENTION: | |
3253 | case WND4_RESOURCE: | |
d0a381dd BF |
3254 | p = xdr_reserve_space(xdr, 8); |
3255 | if (!p) | |
3256 | return nfserr_resource; | |
c373b0a4 BF |
3257 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
3258 | /* deleg signaling not supported yet: */ | |
3259 | *p++ = cpu_to_be32(0); | |
d24433cd BH |
3260 | break; |
3261 | default: | |
d0a381dd BF |
3262 | p = xdr_reserve_space(xdr, 4); |
3263 | if (!p) | |
3264 | return nfserr_resource; | |
c373b0a4 | 3265 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
d24433cd | 3266 | } |
d24433cd | 3267 | break; |
1da177e4 LT |
3268 | default: |
3269 | BUG(); | |
3270 | } | |
3271 | /* XXX save filehandle here */ | |
3272 | out: | |
695e12f8 | 3273 | return nfserr; |
1da177e4 LT |
3274 | } |
3275 | ||
695e12f8 | 3276 | static __be32 |
b37ad28b | 3277 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 | 3278 | { |
d0a381dd BF |
3279 | struct xdr_stream *xdr = &resp->xdr; |
3280 | ||
e2f282b9 | 3281 | if (!nfserr) |
d0a381dd | 3282 | nfserr = nfsd4_encode_stateid(xdr, &oc->oc_resp_stateid); |
1da177e4 | 3283 | |
695e12f8 | 3284 | return nfserr; |
1da177e4 LT |
3285 | } |
3286 | ||
695e12f8 | 3287 | static __be32 |
b37ad28b | 3288 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 | 3289 | { |
d0a381dd BF |
3290 | struct xdr_stream *xdr = &resp->xdr; |
3291 | ||
e2f282b9 | 3292 | if (!nfserr) |
d0a381dd | 3293 | nfserr = nfsd4_encode_stateid(xdr, &od->od_stateid); |
1da177e4 | 3294 | |
695e12f8 | 3295 | return nfserr; |
1da177e4 LT |
3296 | } |
3297 | ||
dc97618d BF |
3298 | static __be32 nfsd4_encode_splice_read( |
3299 | struct nfsd4_compoundres *resp, | |
3300 | struct nfsd4_read *read, | |
3301 | struct file *file, unsigned long maxcount) | |
1da177e4 | 3302 | { |
ddd1ea56 | 3303 | struct xdr_stream *xdr = &resp->xdr; |
34a78b48 | 3304 | struct xdr_buf *buf = xdr->buf; |
dc97618d | 3305 | u32 eof; |
30596768 | 3306 | int space_left; |
dc97618d | 3307 | __be32 nfserr; |
fec25fa4 | 3308 | __be32 *p = xdr->p - 2; |
1da177e4 | 3309 | |
d5d5c304 KM |
3310 | /* Make sure there will be room for padding if needed */ |
3311 | if (xdr->end - xdr->p < 1) | |
d0a381dd | 3312 | return nfserr_resource; |
dc97618d BF |
3313 | |
3314 | nfserr = nfsd_splice_read(read->rd_rqstp, file, | |
3315 | read->rd_offset, &maxcount); | |
3316 | if (nfserr) { | |
3317 | /* | |
3318 | * nfsd_splice_actor may have already messed with the | |
3319 | * page length; reset it so as not to confuse | |
3320 | * xdr_truncate_encode: | |
3321 | */ | |
34a78b48 | 3322 | buf->page_len = 0; |
dc97618d | 3323 | return nfserr; |
b0e35fda | 3324 | } |
1da177e4 | 3325 | |
dc97618d BF |
3326 | eof = (read->rd_offset + maxcount >= |
3327 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
4e21ac4b | 3328 | |
fec25fa4 BF |
3329 | *(p++) = htonl(eof); |
3330 | *(p++) = htonl(maxcount); | |
dc97618d | 3331 | |
34a78b48 BF |
3332 | buf->page_len = maxcount; |
3333 | buf->len += maxcount; | |
15b23ef5 BF |
3334 | xdr->page_ptr += (buf->page_base + maxcount + PAGE_SIZE - 1) |
3335 | / PAGE_SIZE; | |
dc97618d BF |
3336 | |
3337 | /* Use rest of head for padding and remaining ops: */ | |
34a78b48 BF |
3338 | buf->tail[0].iov_base = xdr->p; |
3339 | buf->tail[0].iov_len = 0; | |
fec25fa4 | 3340 | xdr->iov = buf->tail; |
dc97618d | 3341 | if (maxcount&3) { |
fec25fa4 BF |
3342 | int pad = 4 - (maxcount&3); |
3343 | ||
3344 | *(xdr->p++) = 0; | |
3345 | ||
34a78b48 | 3346 | buf->tail[0].iov_base += maxcount&3; |
fec25fa4 BF |
3347 | buf->tail[0].iov_len = pad; |
3348 | buf->len += pad; | |
b0e35fda | 3349 | } |
2825a7f9 | 3350 | |
dc97618d | 3351 | space_left = min_t(int, (void *)xdr->end - (void *)xdr->p, |
34a78b48 BF |
3352 | buf->buflen - buf->len); |
3353 | buf->buflen = buf->len + space_left; | |
dc97618d BF |
3354 | xdr->end = (__be32 *)((void *)xdr->end + space_left); |
3355 | ||
3356 | return 0; | |
3357 | } | |
3358 | ||
3359 | static __be32 nfsd4_encode_readv(struct nfsd4_compoundres *resp, | |
3360 | struct nfsd4_read *read, | |
3361 | struct file *file, unsigned long maxcount) | |
3362 | { | |
3363 | struct xdr_stream *xdr = &resp->xdr; | |
3364 | u32 eof; | |
3365 | int v; | |
dc97618d | 3366 | int starting_len = xdr->buf->len - 8; |
dc97618d | 3367 | long len; |
b0420980 | 3368 | int thislen; |
dc97618d BF |
3369 | __be32 nfserr; |
3370 | __be32 tmp; | |
3371 | __be32 *p; | |
b0420980 BF |
3372 | u32 zzz = 0; |
3373 | int pad; | |
1da177e4 LT |
3374 | |
3375 | len = maxcount; | |
3376 | v = 0; | |
6ff9897d | 3377 | |
1055414f | 3378 | thislen = min_t(long, len, ((void *)xdr->end - (void *)xdr->p)); |
b0420980 BF |
3379 | p = xdr_reserve_space(xdr, (thislen+3)&~3); |
3380 | WARN_ON_ONCE(!p); | |
3381 | resp->rqstp->rq_vec[v].iov_base = p; | |
3382 | resp->rqstp->rq_vec[v].iov_len = thislen; | |
3383 | v++; | |
3384 | len -= thislen; | |
3385 | ||
3386 | while (len) { | |
6ff9897d | 3387 | thislen = min_t(long, len, PAGE_SIZE); |
b0420980 BF |
3388 | p = xdr_reserve_space(xdr, (thislen+3)&~3); |
3389 | WARN_ON_ONCE(!p); | |
3390 | resp->rqstp->rq_vec[v].iov_base = p; | |
6ff9897d | 3391 | resp->rqstp->rq_vec[v].iov_len = thislen; |
1da177e4 | 3392 | v++; |
6ff9897d | 3393 | len -= thislen; |
1da177e4 LT |
3394 | } |
3395 | read->rd_vlen = v; | |
3396 | ||
dc97618d BF |
3397 | nfserr = nfsd_readv(file, read->rd_offset, resp->rqstp->rq_vec, |
3398 | read->rd_vlen, &maxcount); | |
3399 | if (nfserr) | |
1da177e4 | 3400 | return nfserr; |
b0420980 | 3401 | xdr_truncate_encode(xdr, starting_len + 8 + ((maxcount+3)&~3)); |
dc97618d | 3402 | |
44524359 N |
3403 | eof = (read->rd_offset + maxcount >= |
3404 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 | 3405 | |
dc97618d BF |
3406 | tmp = htonl(eof); |
3407 | write_bytes_to_xdr_buf(xdr->buf, starting_len , &tmp, 4); | |
3408 | tmp = htonl(maxcount); | |
3409 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 4, &tmp, 4); | |
3410 | ||
b0420980 BF |
3411 | pad = (maxcount&3) ? 4 - (maxcount&3) : 0; |
3412 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 8 + maxcount, | |
3413 | &zzz, pad); | |
1da177e4 | 3414 | return 0; |
dc97618d BF |
3415 | |
3416 | } | |
3417 | ||
3418 | static __be32 | |
3419 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3420 | struct nfsd4_read *read) | |
3421 | { | |
3422 | unsigned long maxcount; | |
3423 | struct xdr_stream *xdr = &resp->xdr; | |
3424 | struct file *file = read->rd_filp; | |
3425 | int starting_len = xdr->buf->len; | |
3426 | struct raparms *ra; | |
3427 | __be32 *p; | |
3428 | __be32 err; | |
3429 | ||
3430 | if (nfserr) | |
3431 | return nfserr; | |
3432 | ||
3433 | p = xdr_reserve_space(xdr, 8); /* eof flag and byte count */ | |
3434 | if (!p) { | |
779fb0f3 | 3435 | WARN_ON_ONCE(test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)); |
dc97618d BF |
3436 | return nfserr_resource; |
3437 | } | |
779fb0f3 | 3438 | if (resp->xdr.buf->page_len && test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) { |
b0420980 | 3439 | WARN_ON_ONCE(1); |
dc97618d BF |
3440 | return nfserr_resource; |
3441 | } | |
dc97618d BF |
3442 | xdr_commit_encode(xdr); |
3443 | ||
3444 | maxcount = svc_max_payload(resp->rqstp); | |
3c7aa15d KM |
3445 | maxcount = min_t(unsigned long, maxcount, (xdr->buf->buflen - xdr->buf->len)); |
3446 | maxcount = min_t(unsigned long, maxcount, read->rd_length); | |
dc97618d BF |
3447 | |
3448 | if (!read->rd_filp) { | |
3449 | err = nfsd_get_tmp_read_open(resp->rqstp, read->rd_fhp, | |
3450 | &file, &ra); | |
3451 | if (err) | |
3452 | goto err_truncate; | |
3453 | } | |
3454 | ||
779fb0f3 | 3455 | if (file->f_op->splice_read && test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) |
dc97618d BF |
3456 | err = nfsd4_encode_splice_read(resp, read, file, maxcount); |
3457 | else | |
3458 | err = nfsd4_encode_readv(resp, read, file, maxcount); | |
3459 | ||
3460 | if (!read->rd_filp) | |
3461 | nfsd_put_tmp_read_open(file, ra); | |
3462 | ||
3463 | err_truncate: | |
3464 | if (err) | |
3465 | xdr_truncate_encode(xdr, starting_len); | |
3466 | return err; | |
1da177e4 LT |
3467 | } |
3468 | ||
b37ad28b AV |
3469 | static __be32 |
3470 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
3471 | { |
3472 | int maxcount; | |
476a7b1f BF |
3473 | __be32 wire_count; |
3474 | int zero = 0; | |
ddd1ea56 | 3475 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3476 | int length_offset = xdr->buf->len; |
bc749ca4 | 3477 | __be32 *p; |
1da177e4 LT |
3478 | |
3479 | if (nfserr) | |
3480 | return nfserr; | |
2825a7f9 BF |
3481 | |
3482 | p = xdr_reserve_space(xdr, 4); | |
3483 | if (!p) | |
3484 | return nfserr_resource; | |
1da177e4 | 3485 | maxcount = PAGE_SIZE; |
d0a381dd | 3486 | |
476a7b1f BF |
3487 | p = xdr_reserve_space(xdr, maxcount); |
3488 | if (!p) | |
4e21ac4b | 3489 | return nfserr_resource; |
1da177e4 LT |
3490 | /* |
3491 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
3492 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
3493 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
3494 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
3495 | */ | |
476a7b1f BF |
3496 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, |
3497 | (char *)p, &maxcount); | |
1da177e4 | 3498 | if (nfserr == nfserr_isdir) |
d3f627c8 BF |
3499 | nfserr = nfserr_inval; |
3500 | if (nfserr) { | |
1fcea5b2 | 3501 | xdr_truncate_encode(xdr, length_offset); |
1da177e4 | 3502 | return nfserr; |
d3f627c8 | 3503 | } |
1da177e4 | 3504 | |
476a7b1f BF |
3505 | wire_count = htonl(maxcount); |
3506 | write_bytes_to_xdr_buf(xdr->buf, length_offset, &wire_count, 4); | |
69bbd9c7 | 3507 | xdr_truncate_encode(xdr, length_offset + 4 + ALIGN(maxcount, 4)); |
476a7b1f BF |
3508 | if (maxcount & 3) |
3509 | write_bytes_to_xdr_buf(xdr->buf, length_offset + 4 + maxcount, | |
3510 | &zero, 4 - (maxcount&3)); | |
1da177e4 LT |
3511 | return 0; |
3512 | } | |
3513 | ||
b37ad28b AV |
3514 | static __be32 |
3515 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
3516 | { |
3517 | int maxcount; | |
561f0ed4 | 3518 | int bytes_left; |
1da177e4 | 3519 | loff_t offset; |
561f0ed4 | 3520 | __be64 wire_offset; |
ddd1ea56 | 3521 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3522 | int starting_len = xdr->buf->len; |
bc749ca4 | 3523 | __be32 *p; |
1da177e4 LT |
3524 | |
3525 | if (nfserr) | |
3526 | return nfserr; | |
1da177e4 | 3527 | |
d0a381dd BF |
3528 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
3529 | if (!p) | |
3530 | return nfserr_resource; | |
1da177e4 LT |
3531 | |
3532 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
c373b0a4 BF |
3533 | *p++ = cpu_to_be32(0); |
3534 | *p++ = cpu_to_be32(0); | |
4aea24b2 BF |
3535 | resp->xdr.buf->head[0].iov_len = ((char *)resp->xdr.p) |
3536 | - (char *)resp->xdr.buf->head[0].iov_base; | |
1da177e4 LT |
3537 | |
3538 | /* | |
561f0ed4 BF |
3539 | * Number of bytes left for directory entries allowing for the |
3540 | * final 8 bytes of the readdir and a following failed op: | |
3541 | */ | |
3542 | bytes_left = xdr->buf->buflen - xdr->buf->len | |
3543 | - COMPOUND_ERR_SLACK_SPACE - 8; | |
3544 | if (bytes_left < 0) { | |
3545 | nfserr = nfserr_resource; | |
3546 | goto err_no_verf; | |
3547 | } | |
3548 | maxcount = min_t(u32, readdir->rd_maxcount, INT_MAX); | |
3549 | /* | |
3550 | * Note the rfc defines rd_maxcount as the size of the | |
3551 | * READDIR4resok structure, which includes the verifier above | |
3552 | * and the 8 bytes encoded at the end of this function: | |
1da177e4 | 3553 | */ |
561f0ed4 BF |
3554 | if (maxcount < 16) { |
3555 | nfserr = nfserr_toosmall; | |
1da177e4 LT |
3556 | goto err_no_verf; |
3557 | } | |
561f0ed4 | 3558 | maxcount = min_t(int, maxcount-16, bytes_left); |
1da177e4 | 3559 | |
aee37764 BF |
3560 | /* RFC 3530 14.2.24 allows us to ignore dircount when it's 0: */ |
3561 | if (!readdir->rd_dircount) | |
3562 | readdir->rd_dircount = INT_MAX; | |
3563 | ||
561f0ed4 BF |
3564 | readdir->xdr = xdr; |
3565 | readdir->rd_maxcount = maxcount; | |
1da177e4 | 3566 | readdir->common.err = 0; |
561f0ed4 | 3567 | readdir->cookie_offset = 0; |
1da177e4 LT |
3568 | |
3569 | offset = readdir->rd_cookie; | |
3570 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
3571 | &offset, | |
3572 | &readdir->common, nfsd4_encode_dirent); | |
3573 | if (nfserr == nfs_ok && | |
3574 | readdir->common.err == nfserr_toosmall && | |
561f0ed4 BF |
3575 | xdr->buf->len == starting_len + 8) { |
3576 | /* nothing encoded; which limit did we hit?: */ | |
3577 | if (maxcount - 16 < bytes_left) | |
3578 | /* It was the fault of rd_maxcount: */ | |
3579 | nfserr = nfserr_toosmall; | |
3580 | else | |
3581 | /* We ran out of buffer space: */ | |
3582 | nfserr = nfserr_resource; | |
3583 | } | |
1da177e4 LT |
3584 | if (nfserr) |
3585 | goto err_no_verf; | |
3586 | ||
561f0ed4 BF |
3587 | if (readdir->cookie_offset) { |
3588 | wire_offset = cpu_to_be64(offset); | |
3589 | write_bytes_to_xdr_buf(xdr->buf, readdir->cookie_offset, | |
3590 | &wire_offset, 8); | |
3591 | } | |
1da177e4 | 3592 | |
561f0ed4 BF |
3593 | p = xdr_reserve_space(xdr, 8); |
3594 | if (!p) { | |
3595 | WARN_ON_ONCE(1); | |
3596 | goto err_no_verf; | |
3597 | } | |
1da177e4 LT |
3598 | *p++ = 0; /* no more entries */ |
3599 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
1da177e4 LT |
3600 | |
3601 | return 0; | |
3602 | err_no_verf: | |
1fcea5b2 | 3603 | xdr_truncate_encode(xdr, starting_len); |
1da177e4 LT |
3604 | return nfserr; |
3605 | } | |
3606 | ||
695e12f8 | 3607 | static __be32 |
b37ad28b | 3608 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 3609 | { |
d0a381dd | 3610 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3611 | __be32 *p; |
1da177e4 LT |
3612 | |
3613 | if (!nfserr) { | |
d0a381dd BF |
3614 | p = xdr_reserve_space(xdr, 20); |
3615 | if (!p) | |
3616 | return nfserr_resource; | |
d05d5744 | 3617 | p = encode_cinfo(p, &remove->rm_cinfo); |
1da177e4 | 3618 | } |
695e12f8 | 3619 | return nfserr; |
1da177e4 LT |
3620 | } |
3621 | ||
695e12f8 | 3622 | static __be32 |
b37ad28b | 3623 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 3624 | { |
d0a381dd | 3625 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3626 | __be32 *p; |
1da177e4 LT |
3627 | |
3628 | if (!nfserr) { | |
d0a381dd BF |
3629 | p = xdr_reserve_space(xdr, 40); |
3630 | if (!p) | |
3631 | return nfserr_resource; | |
d05d5744 BF |
3632 | p = encode_cinfo(p, &rename->rn_sinfo); |
3633 | p = encode_cinfo(p, &rename->rn_tinfo); | |
1da177e4 | 3634 | } |
695e12f8 | 3635 | return nfserr; |
1da177e4 LT |
3636 | } |
3637 | ||
695e12f8 | 3638 | static __be32 |
d0a381dd | 3639 | nfsd4_do_encode_secinfo(struct xdr_stream *xdr, |
a77c806f | 3640 | __be32 nfserr, struct svc_export *exp) |
dcb488a3 | 3641 | { |
676e4ebd | 3642 | u32 i, nflavs, supported; |
4796f457 BF |
3643 | struct exp_flavor_info *flavs; |
3644 | struct exp_flavor_info def_flavs[2]; | |
676e4ebd CL |
3645 | __be32 *p, *flavorsp; |
3646 | static bool report = true; | |
dcb488a3 AA |
3647 | |
3648 | if (nfserr) | |
3649 | goto out; | |
d0a381dd | 3650 | nfserr = nfserr_resource; |
4796f457 BF |
3651 | if (exp->ex_nflavors) { |
3652 | flavs = exp->ex_flavors; | |
3653 | nflavs = exp->ex_nflavors; | |
3654 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
3655 | flavs = def_flavs; | |
3656 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
3657 | nflavs = 2; | |
3658 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
3659 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
3660 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
3661 | nflavs = 1; | |
3662 | flavs[0].pseudoflavor | |
3663 | = svcauth_gss_flavor(exp->ex_client); | |
3664 | } else { | |
3665 | nflavs = 1; | |
3666 | flavs[0].pseudoflavor | |
3667 | = exp->ex_client->flavour->flavour; | |
3668 | } | |
3669 | } | |
3670 | ||
676e4ebd | 3671 | supported = 0; |
d0a381dd BF |
3672 | p = xdr_reserve_space(xdr, 4); |
3673 | if (!p) | |
3674 | goto out; | |
676e4ebd | 3675 | flavorsp = p++; /* to be backfilled later */ |
676e4ebd | 3676 | |
4796f457 | 3677 | for (i = 0; i < nflavs; i++) { |
676e4ebd | 3678 | rpc_authflavor_t pf = flavs[i].pseudoflavor; |
a77c806f | 3679 | struct rpcsec_gss_info info; |
dcb488a3 | 3680 | |
676e4ebd CL |
3681 | if (rpcauth_get_gssinfo(pf, &info) == 0) { |
3682 | supported++; | |
d0a381dd BF |
3683 | p = xdr_reserve_space(xdr, 4 + 4 + |
3684 | XDR_LEN(info.oid.len) + 4 + 4); | |
3685 | if (!p) | |
3686 | goto out; | |
c373b0a4 | 3687 | *p++ = cpu_to_be32(RPC_AUTH_GSS); |
0c0c267b | 3688 | p = xdr_encode_opaque(p, info.oid.data, info.oid.len); |
c373b0a4 BF |
3689 | *p++ = cpu_to_be32(info.qop); |
3690 | *p++ = cpu_to_be32(info.service); | |
676e4ebd CL |
3691 | } else if (pf < RPC_AUTH_MAXFLAVOR) { |
3692 | supported++; | |
d0a381dd BF |
3693 | p = xdr_reserve_space(xdr, 4); |
3694 | if (!p) | |
3695 | goto out; | |
c373b0a4 | 3696 | *p++ = cpu_to_be32(pf); |
676e4ebd CL |
3697 | } else { |
3698 | if (report) | |
3699 | pr_warn("NFS: SECINFO: security flavor %u " | |
3700 | "is not supported\n", pf); | |
dcb488a3 AA |
3701 | } |
3702 | } | |
a77c806f | 3703 | |
676e4ebd CL |
3704 | if (nflavs != supported) |
3705 | report = false; | |
3706 | *flavorsp = htonl(supported); | |
d0a381dd | 3707 | nfserr = 0; |
dcb488a3 AA |
3708 | out: |
3709 | if (exp) | |
3710 | exp_put(exp); | |
695e12f8 | 3711 | return nfserr; |
dcb488a3 AA |
3712 | } |
3713 | ||
22b6dee8 MJ |
3714 | static __be32 |
3715 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3716 | struct nfsd4_secinfo *secinfo) | |
3717 | { | |
d0a381dd BF |
3718 | struct xdr_stream *xdr = &resp->xdr; |
3719 | ||
3720 | return nfsd4_do_encode_secinfo(xdr, nfserr, secinfo->si_exp); | |
22b6dee8 MJ |
3721 | } |
3722 | ||
3723 | static __be32 | |
3724 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3725 | struct nfsd4_secinfo_no_name *secinfo) | |
3726 | { | |
d0a381dd BF |
3727 | struct xdr_stream *xdr = &resp->xdr; |
3728 | ||
3729 | return nfsd4_do_encode_secinfo(xdr, nfserr, secinfo->sin_exp); | |
22b6dee8 MJ |
3730 | } |
3731 | ||
1da177e4 LT |
3732 | /* |
3733 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
3734 | * regardless of the error status. | |
3735 | */ | |
695e12f8 | 3736 | static __be32 |
b37ad28b | 3737 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 3738 | { |
d0a381dd | 3739 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3740 | __be32 *p; |
1da177e4 | 3741 | |
d0a381dd BF |
3742 | p = xdr_reserve_space(xdr, 16); |
3743 | if (!p) | |
3744 | return nfserr_resource; | |
1da177e4 | 3745 | if (nfserr) { |
c373b0a4 BF |
3746 | *p++ = cpu_to_be32(3); |
3747 | *p++ = cpu_to_be32(0); | |
3748 | *p++ = cpu_to_be32(0); | |
3749 | *p++ = cpu_to_be32(0); | |
1da177e4 LT |
3750 | } |
3751 | else { | |
c373b0a4 BF |
3752 | *p++ = cpu_to_be32(3); |
3753 | *p++ = cpu_to_be32(setattr->sa_bmval[0]); | |
3754 | *p++ = cpu_to_be32(setattr->sa_bmval[1]); | |
3755 | *p++ = cpu_to_be32(setattr->sa_bmval[2]); | |
1da177e4 | 3756 | } |
695e12f8 | 3757 | return nfserr; |
1da177e4 LT |
3758 | } |
3759 | ||
695e12f8 | 3760 | static __be32 |
b37ad28b | 3761 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 3762 | { |
d0a381dd | 3763 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3764 | __be32 *p; |
1da177e4 LT |
3765 | |
3766 | if (!nfserr) { | |
d0a381dd BF |
3767 | p = xdr_reserve_space(xdr, 8 + NFS4_VERIFIER_SIZE); |
3768 | if (!p) | |
3769 | return nfserr_resource; | |
0c0c267b BF |
3770 | p = xdr_encode_opaque_fixed(p, &scd->se_clientid, 8); |
3771 | p = xdr_encode_opaque_fixed(p, &scd->se_confirm, | |
3772 | NFS4_VERIFIER_SIZE); | |
1da177e4 LT |
3773 | } |
3774 | else if (nfserr == nfserr_clid_inuse) { | |
d0a381dd BF |
3775 | p = xdr_reserve_space(xdr, 8); |
3776 | if (!p) | |
3777 | return nfserr_resource; | |
c373b0a4 BF |
3778 | *p++ = cpu_to_be32(0); |
3779 | *p++ = cpu_to_be32(0); | |
1da177e4 | 3780 | } |
695e12f8 | 3781 | return nfserr; |
1da177e4 LT |
3782 | } |
3783 | ||
695e12f8 | 3784 | static __be32 |
b37ad28b | 3785 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 3786 | { |
d0a381dd | 3787 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3788 | __be32 *p; |
1da177e4 LT |
3789 | |
3790 | if (!nfserr) { | |
d0a381dd BF |
3791 | p = xdr_reserve_space(xdr, 16); |
3792 | if (!p) | |
3793 | return nfserr_resource; | |
c373b0a4 BF |
3794 | *p++ = cpu_to_be32(write->wr_bytes_written); |
3795 | *p++ = cpu_to_be32(write->wr_how_written); | |
0c0c267b BF |
3796 | p = xdr_encode_opaque_fixed(p, write->wr_verifier.data, |
3797 | NFS4_VERIFIER_SIZE); | |
1da177e4 | 3798 | } |
695e12f8 | 3799 | return nfserr; |
1da177e4 LT |
3800 | } |
3801 | ||
57266a6e BF |
3802 | static const u32 nfs4_minimal_spo_must_enforce[2] = { |
3803 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
3804 | 1 << (OP_EXCHANGE_ID - 32) | | |
3805 | 1 << (OP_CREATE_SESSION - 32) | | |
3806 | 1 << (OP_DESTROY_SESSION - 32) | | |
3807 | 1 << (OP_DESTROY_CLIENTID - 32) | |
3808 | }; | |
3809 | ||
2db134eb | 3810 | static __be32 |
57b7b43b | 3811 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3812 | struct nfsd4_exchange_id *exid) |
3813 | { | |
d0a381dd | 3814 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3815 | __be32 *p; |
0733d213 AA |
3816 | char *major_id; |
3817 | char *server_scope; | |
3818 | int major_id_sz; | |
3819 | int server_scope_sz; | |
3820 | uint64_t minor_id = 0; | |
3821 | ||
3822 | if (nfserr) | |
3823 | return nfserr; | |
3824 | ||
3825 | major_id = utsname()->nodename; | |
3826 | major_id_sz = strlen(major_id); | |
3827 | server_scope = utsname()->nodename; | |
3828 | server_scope_sz = strlen(server_scope); | |
3829 | ||
d0a381dd | 3830 | p = xdr_reserve_space(xdr, |
0733d213 AA |
3831 | 8 /* eir_clientid */ + |
3832 | 4 /* eir_sequenceid */ + | |
3833 | 4 /* eir_flags */ + | |
a8bb84bc | 3834 | 4 /* spr_how */); |
d0a381dd BF |
3835 | if (!p) |
3836 | return nfserr_resource; | |
0733d213 | 3837 | |
0c0c267b | 3838 | p = xdr_encode_opaque_fixed(p, &exid->clientid, 8); |
c373b0a4 BF |
3839 | *p++ = cpu_to_be32(exid->seqid); |
3840 | *p++ = cpu_to_be32(exid->flags); | |
0733d213 | 3841 | |
c373b0a4 | 3842 | *p++ = cpu_to_be32(exid->spa_how); |
a8bb84bc | 3843 | |
57266a6e BF |
3844 | switch (exid->spa_how) { |
3845 | case SP4_NONE: | |
3846 | break; | |
3847 | case SP4_MACH_CRED: | |
a8bb84bc | 3848 | /* spo_must_enforce, spo_must_allow */ |
d0a381dd BF |
3849 | p = xdr_reserve_space(xdr, 16); |
3850 | if (!p) | |
3851 | return nfserr_resource; | |
a8bb84bc | 3852 | |
57266a6e | 3853 | /* spo_must_enforce bitmap: */ |
c373b0a4 BF |
3854 | *p++ = cpu_to_be32(2); |
3855 | *p++ = cpu_to_be32(nfs4_minimal_spo_must_enforce[0]); | |
3856 | *p++ = cpu_to_be32(nfs4_minimal_spo_must_enforce[1]); | |
57266a6e | 3857 | /* empty spo_must_allow bitmap: */ |
c373b0a4 | 3858 | *p++ = cpu_to_be32(0); |
a8bb84bc | 3859 | |
57266a6e BF |
3860 | break; |
3861 | default: | |
3862 | WARN_ON_ONCE(1); | |
3863 | } | |
0733d213 | 3864 | |
d0a381dd | 3865 | p = xdr_reserve_space(xdr, |
a8bb84bc KM |
3866 | 8 /* so_minor_id */ + |
3867 | 4 /* so_major_id.len */ + | |
3868 | (XDR_QUADLEN(major_id_sz) * 4) + | |
3869 | 4 /* eir_server_scope.len */ + | |
3870 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
3871 | 4 /* eir_server_impl_id.count (0) */); | |
d0a381dd BF |
3872 | if (!p) |
3873 | return nfserr_resource; | |
a8bb84bc | 3874 | |
0733d213 | 3875 | /* The server_owner struct */ |
b64c7f3b | 3876 | p = xdr_encode_hyper(p, minor_id); /* Minor id */ |
0733d213 | 3877 | /* major id */ |
0c0c267b | 3878 | p = xdr_encode_opaque(p, major_id, major_id_sz); |
0733d213 AA |
3879 | |
3880 | /* Server scope */ | |
0c0c267b | 3881 | p = xdr_encode_opaque(p, server_scope, server_scope_sz); |
0733d213 AA |
3882 | |
3883 | /* Implementation id */ | |
c373b0a4 | 3884 | *p++ = cpu_to_be32(0); /* zero length nfs_impl_id4 array */ |
0733d213 | 3885 | return 0; |
2db134eb AA |
3886 | } |
3887 | ||
3888 | static __be32 | |
57b7b43b | 3889 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3890 | struct nfsd4_create_session *sess) |
3891 | { | |
d0a381dd | 3892 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3893 | __be32 *p; |
ec6b5d7b AA |
3894 | |
3895 | if (nfserr) | |
3896 | return nfserr; | |
3897 | ||
d0a381dd BF |
3898 | p = xdr_reserve_space(xdr, 24); |
3899 | if (!p) | |
3900 | return nfserr_resource; | |
0c0c267b BF |
3901 | p = xdr_encode_opaque_fixed(p, sess->sessionid.data, |
3902 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
3903 | *p++ = cpu_to_be32(sess->seqid); |
3904 | *p++ = cpu_to_be32(sess->flags); | |
ec6b5d7b | 3905 | |
d0a381dd BF |
3906 | p = xdr_reserve_space(xdr, 28); |
3907 | if (!p) | |
3908 | return nfserr_resource; | |
c373b0a4 BF |
3909 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
3910 | *p++ = cpu_to_be32(sess->fore_channel.maxreq_sz); | |
3911 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_sz); | |
3912 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_cached); | |
3913 | *p++ = cpu_to_be32(sess->fore_channel.maxops); | |
3914 | *p++ = cpu_to_be32(sess->fore_channel.maxreqs); | |
3915 | *p++ = cpu_to_be32(sess->fore_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
3916 | |
3917 | if (sess->fore_channel.nr_rdma_attrs) { | |
d0a381dd BF |
3918 | p = xdr_reserve_space(xdr, 4); |
3919 | if (!p) | |
3920 | return nfserr_resource; | |
c373b0a4 | 3921 | *p++ = cpu_to_be32(sess->fore_channel.rdma_attrs); |
ec6b5d7b AA |
3922 | } |
3923 | ||
d0a381dd BF |
3924 | p = xdr_reserve_space(xdr, 28); |
3925 | if (!p) | |
3926 | return nfserr_resource; | |
c373b0a4 BF |
3927 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
3928 | *p++ = cpu_to_be32(sess->back_channel.maxreq_sz); | |
3929 | *p++ = cpu_to_be32(sess->back_channel.maxresp_sz); | |
3930 | *p++ = cpu_to_be32(sess->back_channel.maxresp_cached); | |
3931 | *p++ = cpu_to_be32(sess->back_channel.maxops); | |
3932 | *p++ = cpu_to_be32(sess->back_channel.maxreqs); | |
3933 | *p++ = cpu_to_be32(sess->back_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
3934 | |
3935 | if (sess->back_channel.nr_rdma_attrs) { | |
d0a381dd BF |
3936 | p = xdr_reserve_space(xdr, 4); |
3937 | if (!p) | |
3938 | return nfserr_resource; | |
c373b0a4 | 3939 | *p++ = cpu_to_be32(sess->back_channel.rdma_attrs); |
ec6b5d7b AA |
3940 | } |
3941 | return 0; | |
2db134eb AA |
3942 | } |
3943 | ||
c47d832b | 3944 | static __be32 |
57b7b43b | 3945 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3946 | struct nfsd4_sequence *seq) |
3947 | { | |
d0a381dd | 3948 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3949 | __be32 *p; |
b85d4c01 BH |
3950 | |
3951 | if (nfserr) | |
3952 | return nfserr; | |
3953 | ||
d0a381dd BF |
3954 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 20); |
3955 | if (!p) | |
3956 | return nfserr_resource; | |
0c0c267b BF |
3957 | p = xdr_encode_opaque_fixed(p, seq->sessionid.data, |
3958 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
3959 | *p++ = cpu_to_be32(seq->seqid); |
3960 | *p++ = cpu_to_be32(seq->slotid); | |
b7d7ca35 | 3961 | /* Note slotid's are numbered from zero: */ |
c373b0a4 BF |
3962 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_highest_slotid */ |
3963 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_target_highest_slotid */ | |
3964 | *p++ = cpu_to_be32(seq->status_flags); | |
b85d4c01 | 3965 | |
f5236013 | 3966 | resp->cstate.data_offset = xdr->buf->len; /* DRC cache data pointer */ |
b85d4c01 | 3967 | return 0; |
2db134eb AA |
3968 | } |
3969 | ||
2355c596 | 3970 | static __be32 |
57b7b43b | 3971 | nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
17456804 BS |
3972 | struct nfsd4_test_stateid *test_stateid) |
3973 | { | |
d0a381dd | 3974 | struct xdr_stream *xdr = &resp->xdr; |
03cfb420 | 3975 | struct nfsd4_test_stateid_id *stateid, *next; |
17456804 | 3976 | __be32 *p; |
17456804 | 3977 | |
a11fcce1 BF |
3978 | if (nfserr) |
3979 | return nfserr; | |
3980 | ||
d0a381dd BF |
3981 | p = xdr_reserve_space(xdr, 4 + (4 * test_stateid->ts_num_ids)); |
3982 | if (!p) | |
3983 | return nfserr_resource; | |
17456804 | 3984 | *p++ = htonl(test_stateid->ts_num_ids); |
17456804 | 3985 | |
03cfb420 | 3986 | list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) { |
02f5fde5 | 3987 | *p++ = stateid->ts_id_status; |
17456804 | 3988 | } |
17456804 BS |
3989 | |
3990 | return nfserr; | |
3991 | } | |
3992 | ||
9cf514cc CH |
3993 | #ifdef CONFIG_NFSD_PNFS |
3994 | static __be32 | |
3995 | nfsd4_encode_getdeviceinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3996 | struct nfsd4_getdeviceinfo *gdev) | |
3997 | { | |
3998 | struct xdr_stream *xdr = &resp->xdr; | |
3999 | const struct nfsd4_layout_ops *ops = | |
4000 | nfsd4_layout_ops[gdev->gd_layout_type]; | |
4001 | u32 starting_len = xdr->buf->len, needed_len; | |
4002 | __be32 *p; | |
4003 | ||
4004 | dprintk("%s: err %d\n", __func__, nfserr); | |
4005 | if (nfserr) | |
4006 | goto out; | |
4007 | ||
4008 | nfserr = nfserr_resource; | |
4009 | p = xdr_reserve_space(xdr, 4); | |
4010 | if (!p) | |
4011 | goto out; | |
4012 | ||
4013 | *p++ = cpu_to_be32(gdev->gd_layout_type); | |
4014 | ||
4015 | /* If maxcount is 0 then just update notifications */ | |
4016 | if (gdev->gd_maxcount != 0) { | |
4017 | nfserr = ops->encode_getdeviceinfo(xdr, gdev); | |
4018 | if (nfserr) { | |
4019 | /* | |
4020 | * We don't bother to burden the layout drivers with | |
4021 | * enforcing gd_maxcount, just tell the client to | |
4022 | * come back with a bigger buffer if it's not enough. | |
4023 | */ | |
4024 | if (xdr->buf->len + 4 > gdev->gd_maxcount) | |
4025 | goto toosmall; | |
4026 | goto out; | |
4027 | } | |
4028 | } | |
4029 | ||
4030 | nfserr = nfserr_resource; | |
4031 | if (gdev->gd_notify_types) { | |
4032 | p = xdr_reserve_space(xdr, 4 + 4); | |
4033 | if (!p) | |
4034 | goto out; | |
4035 | *p++ = cpu_to_be32(1); /* bitmap length */ | |
4036 | *p++ = cpu_to_be32(gdev->gd_notify_types); | |
4037 | } else { | |
4038 | p = xdr_reserve_space(xdr, 4); | |
4039 | if (!p) | |
4040 | goto out; | |
4041 | *p++ = 0; | |
4042 | } | |
4043 | ||
4044 | nfserr = 0; | |
4045 | out: | |
4046 | kfree(gdev->gd_device); | |
4047 | dprintk("%s: done: %d\n", __func__, be32_to_cpu(nfserr)); | |
4048 | return nfserr; | |
4049 | ||
4050 | toosmall: | |
4051 | dprintk("%s: maxcount too small\n", __func__); | |
4052 | needed_len = xdr->buf->len + 4 /* notifications */; | |
4053 | xdr_truncate_encode(xdr, starting_len); | |
4054 | p = xdr_reserve_space(xdr, 4); | |
4055 | if (!p) { | |
4056 | nfserr = nfserr_resource; | |
4057 | } else { | |
4058 | *p++ = cpu_to_be32(needed_len); | |
4059 | nfserr = nfserr_toosmall; | |
4060 | } | |
4061 | goto out; | |
4062 | } | |
4063 | ||
4064 | static __be32 | |
4065 | nfsd4_encode_layoutget(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4066 | struct nfsd4_layoutget *lgp) | |
4067 | { | |
4068 | struct xdr_stream *xdr = &resp->xdr; | |
4069 | const struct nfsd4_layout_ops *ops = | |
4070 | nfsd4_layout_ops[lgp->lg_layout_type]; | |
4071 | __be32 *p; | |
4072 | ||
4073 | dprintk("%s: err %d\n", __func__, nfserr); | |
4074 | if (nfserr) | |
4075 | goto out; | |
4076 | ||
4077 | nfserr = nfserr_resource; | |
4078 | p = xdr_reserve_space(xdr, 36 + sizeof(stateid_opaque_t)); | |
4079 | if (!p) | |
4080 | goto out; | |
4081 | ||
4082 | *p++ = cpu_to_be32(1); /* we always set return-on-close */ | |
4083 | *p++ = cpu_to_be32(lgp->lg_sid.si_generation); | |
4084 | p = xdr_encode_opaque_fixed(p, &lgp->lg_sid.si_opaque, | |
4085 | sizeof(stateid_opaque_t)); | |
4086 | ||
4087 | *p++ = cpu_to_be32(1); /* we always return a single layout */ | |
4088 | p = xdr_encode_hyper(p, lgp->lg_seg.offset); | |
4089 | p = xdr_encode_hyper(p, lgp->lg_seg.length); | |
4090 | *p++ = cpu_to_be32(lgp->lg_seg.iomode); | |
4091 | *p++ = cpu_to_be32(lgp->lg_layout_type); | |
4092 | ||
4093 | nfserr = ops->encode_layoutget(xdr, lgp); | |
4094 | out: | |
4095 | kfree(lgp->lg_content); | |
4096 | return nfserr; | |
4097 | } | |
4098 | ||
4099 | static __be32 | |
4100 | nfsd4_encode_layoutcommit(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4101 | struct nfsd4_layoutcommit *lcp) | |
4102 | { | |
4103 | struct xdr_stream *xdr = &resp->xdr; | |
4104 | __be32 *p; | |
4105 | ||
4106 | if (nfserr) | |
4107 | return nfserr; | |
4108 | ||
4109 | p = xdr_reserve_space(xdr, 4); | |
4110 | if (!p) | |
4111 | return nfserr_resource; | |
4112 | *p++ = cpu_to_be32(lcp->lc_size_chg); | |
4113 | if (lcp->lc_size_chg) { | |
4114 | p = xdr_reserve_space(xdr, 8); | |
4115 | if (!p) | |
4116 | return nfserr_resource; | |
4117 | p = xdr_encode_hyper(p, lcp->lc_newsize); | |
4118 | } | |
4119 | ||
4120 | return nfs_ok; | |
4121 | } | |
4122 | ||
4123 | static __be32 | |
4124 | nfsd4_encode_layoutreturn(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4125 | struct nfsd4_layoutreturn *lrp) | |
4126 | { | |
4127 | struct xdr_stream *xdr = &resp->xdr; | |
4128 | __be32 *p; | |
4129 | ||
4130 | if (nfserr) | |
4131 | return nfserr; | |
4132 | ||
4133 | p = xdr_reserve_space(xdr, 4); | |
4134 | if (!p) | |
4135 | return nfserr_resource; | |
4136 | *p++ = cpu_to_be32(lrp->lrs_present); | |
4137 | if (lrp->lrs_present) | |
376675da | 4138 | return nfsd4_encode_stateid(xdr, &lrp->lr_sid); |
9cf514cc CH |
4139 | return nfs_ok; |
4140 | } | |
4141 | #endif /* CONFIG_NFSD_PNFS */ | |
4142 | ||
24bab491 AS |
4143 | static __be32 |
4144 | nfsd4_encode_seek(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4145 | struct nfsd4_seek *seek) | |
4146 | { | |
4147 | __be32 *p; | |
4148 | ||
4149 | if (nfserr) | |
4150 | return nfserr; | |
4151 | ||
4152 | p = xdr_reserve_space(&resp->xdr, 4 + 8); | |
4153 | *p++ = cpu_to_be32(seek->seek_eof); | |
4154 | p = xdr_encode_hyper(p, seek->seek_pos); | |
4155 | ||
4156 | return nfserr; | |
4157 | } | |
4158 | ||
695e12f8 BH |
4159 | static __be32 |
4160 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
4161 | { | |
4162 | return nfserr; | |
4163 | } | |
4164 | ||
4165 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
4166 | ||
2db134eb AA |
4167 | /* |
4168 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
4169 | * since we don't need to filter out obsolete ops as this is | |
4170 | * done in the decoding phase. | |
4171 | */ | |
695e12f8 | 4172 | static nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
4173 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
4174 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
4175 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
4176 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
4177 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
4178 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
4179 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
4180 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
4181 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
4182 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
4183 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
4184 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
4185 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
4186 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
4187 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
4188 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 4189 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
4190 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
4191 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
4192 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4193 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4194 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4195 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
4196 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
4197 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
4198 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
4199 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
4200 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
4201 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4202 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
4203 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
4204 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
4205 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
4206 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
4207 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
4208 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
4209 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
4210 | |
4211 | /* NFSv4.1 operations */ | |
4212 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
1d1bc8f2 | 4213 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
2db134eb AA |
4214 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
4215 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
43212cc7 KM |
4216 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_noop, |
4217 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb | 4218 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
9cf514cc CH |
4219 | #ifdef CONFIG_NFSD_PNFS |
4220 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_getdeviceinfo, | |
4221 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
4222 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_layoutcommit, | |
4223 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_layoutget, | |
4224 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_layoutreturn, | |
4225 | #else | |
2db134eb AA |
4226 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, |
4227 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
4228 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
4229 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
4230 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
9cf514cc | 4231 | #endif |
22b6dee8 | 4232 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
2db134eb AA |
4233 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
4234 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
17456804 | 4235 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, |
2db134eb AA |
4236 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
4237 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
4238 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
87a15a80 AS |
4239 | |
4240 | /* NFSv4.2 operations */ | |
4241 | [OP_ALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, | |
4242 | [OP_COPY] = (nfsd4_enc)nfsd4_encode_noop, | |
4243 | [OP_COPY_NOTIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
4244 | [OP_DEALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, | |
4245 | [OP_IO_ADVISE] = (nfsd4_enc)nfsd4_encode_noop, | |
4246 | [OP_LAYOUTERROR] = (nfsd4_enc)nfsd4_encode_noop, | |
4247 | [OP_LAYOUTSTATS] = (nfsd4_enc)nfsd4_encode_noop, | |
4248 | [OP_OFFLOAD_CANCEL] = (nfsd4_enc)nfsd4_encode_noop, | |
4249 | [OP_OFFLOAD_STATUS] = (nfsd4_enc)nfsd4_encode_noop, | |
4250 | [OP_READ_PLUS] = (nfsd4_enc)nfsd4_encode_noop, | |
24bab491 | 4251 | [OP_SEEK] = (nfsd4_enc)nfsd4_encode_seek, |
87a15a80 | 4252 | [OP_WRITE_SAME] = (nfsd4_enc)nfsd4_encode_noop, |
695e12f8 BH |
4253 | }; |
4254 | ||
496c262c | 4255 | /* |
a8095f7e BF |
4256 | * Calculate whether we still have space to encode repsize bytes. |
4257 | * There are two considerations: | |
4258 | * - For NFS versions >=4.1, the size of the reply must stay within | |
4259 | * session limits | |
4260 | * - For all NFS versions, we must stay within limited preallocated | |
4261 | * buffer space. | |
496c262c | 4262 | * |
a8095f7e BF |
4263 | * This is called before the operation is processed, so can only provide |
4264 | * an upper estimate. For some nonidempotent operations (such as | |
4265 | * getattr), it's not necessarily a problem if that estimate is wrong, | |
4266 | * as we can fail it after processing without significant side effects. | |
496c262c | 4267 | */ |
a8095f7e | 4268 | __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 respsize) |
496c262c | 4269 | { |
67492c99 | 4270 | struct xdr_buf *buf = &resp->rqstp->rq_res; |
47ee5298 | 4271 | struct nfsd4_slot *slot = resp->cstate.slot; |
496c262c | 4272 | |
47ee5298 BF |
4273 | if (buf->len + respsize <= buf->buflen) |
4274 | return nfs_ok; | |
4275 | if (!nfsd4_has_session(&resp->cstate)) | |
ea8d7720 | 4276 | return nfserr_resource; |
47ee5298 BF |
4277 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) { |
4278 | WARN_ON_ONCE(1); | |
4279 | return nfserr_rep_too_big_to_cache; | |
ea8d7720 | 4280 | } |
47ee5298 | 4281 | return nfserr_rep_too_big; |
496c262c AA |
4282 | } |
4283 | ||
1da177e4 LT |
4284 | void |
4285 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
4286 | { | |
082d4bd7 | 4287 | struct xdr_stream *xdr = &resp->xdr; |
9411b1d4 | 4288 | struct nfs4_stateowner *so = resp->cstate.replay_owner; |
5f4ab945 | 4289 | struct svc_rqst *rqstp = resp->rqstp; |
082d4bd7 | 4290 | int post_err_offset; |
07d1f802 | 4291 | nfsd4_enc encoder; |
bc749ca4 | 4292 | __be32 *p; |
1da177e4 | 4293 | |
d0a381dd BF |
4294 | p = xdr_reserve_space(xdr, 8); |
4295 | if (!p) { | |
4296 | WARN_ON_ONCE(1); | |
4297 | return; | |
4298 | } | |
c373b0a4 | 4299 | *p++ = cpu_to_be32(op->opnum); |
082d4bd7 | 4300 | post_err_offset = xdr->buf->len; |
1da177e4 | 4301 | |
695e12f8 BH |
4302 | if (op->opnum == OP_ILLEGAL) |
4303 | goto status; | |
4304 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || | |
4305 | !nfsd4_enc_ops[op->opnum]); | |
07d1f802 BF |
4306 | encoder = nfsd4_enc_ops[op->opnum]; |
4307 | op->status = encoder(resp, op->status, &op->u); | |
2825a7f9 BF |
4308 | xdr_commit_encode(xdr); |
4309 | ||
067e1ace | 4310 | /* nfsd4_check_resp_size guarantees enough room for error status */ |
5f4ab945 BF |
4311 | if (!op->status) { |
4312 | int space_needed = 0; | |
4313 | if (!nfsd4_last_compound_op(rqstp)) | |
4314 | space_needed = COMPOUND_ERR_SLACK_SPACE; | |
4315 | op->status = nfsd4_check_resp_size(resp, space_needed); | |
4316 | } | |
c8f13d97 BF |
4317 | if (op->status == nfserr_resource && nfsd4_has_session(&resp->cstate)) { |
4318 | struct nfsd4_slot *slot = resp->cstate.slot; | |
4319 | ||
4320 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) | |
4321 | op->status = nfserr_rep_too_big_to_cache; | |
4322 | else | |
4323 | op->status = nfserr_rep_too_big; | |
4324 | } | |
07d1f802 BF |
4325 | if (op->status == nfserr_resource || |
4326 | op->status == nfserr_rep_too_big || | |
4327 | op->status == nfserr_rep_too_big_to_cache) { | |
4328 | /* | |
4329 | * The operation may have already been encoded or | |
4330 | * partially encoded. No op returns anything additional | |
4331 | * in the case of one of these three errors, so we can | |
4332 | * just truncate back to after the status. But it's a | |
4333 | * bug if we had to do this on a non-idempotent op: | |
4334 | */ | |
4335 | warn_on_nonidempotent_op(op); | |
082d4bd7 | 4336 | xdr_truncate_encode(xdr, post_err_offset); |
07d1f802 | 4337 | } |
9411b1d4 | 4338 | if (so) { |
082d4bd7 BF |
4339 | int len = xdr->buf->len - post_err_offset; |
4340 | ||
9411b1d4 | 4341 | so->so_replay.rp_status = op->status; |
082d4bd7 BF |
4342 | so->so_replay.rp_buflen = len; |
4343 | read_bytes_from_xdr_buf(xdr->buf, post_err_offset, | |
4344 | so->so_replay.rp_buf, len); | |
9411b1d4 | 4345 | } |
695e12f8 | 4346 | status: |
082d4bd7 BF |
4347 | /* Note that op->status is already in network byte order: */ |
4348 | write_bytes_to_xdr_buf(xdr->buf, post_err_offset - 4, &op->status, 4); | |
1da177e4 LT |
4349 | } |
4350 | ||
4351 | /* | |
4352 | * Encode the reply stored in the stateowner reply cache | |
4353 | * | |
4354 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
4355 | * previously sent already encoded operation. | |
1da177e4 LT |
4356 | */ |
4357 | void | |
d0a381dd | 4358 | nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op) |
1da177e4 | 4359 | { |
bc749ca4 | 4360 | __be32 *p; |
1da177e4 LT |
4361 | struct nfs4_replay *rp = op->replay; |
4362 | ||
4363 | BUG_ON(!rp); | |
4364 | ||
d0a381dd BF |
4365 | p = xdr_reserve_space(xdr, 8 + rp->rp_buflen); |
4366 | if (!p) { | |
4367 | WARN_ON_ONCE(1); | |
4368 | return; | |
4369 | } | |
c373b0a4 | 4370 | *p++ = cpu_to_be32(op->opnum); |
1da177e4 | 4371 | *p++ = rp->rp_status; /* already xdr'ed */ |
1da177e4 | 4372 | |
0c0c267b | 4373 | p = xdr_encode_opaque_fixed(p, rp->rp_buf, rp->rp_buflen); |
1da177e4 LT |
4374 | } |
4375 | ||
1da177e4 | 4376 | int |
2ebbc012 | 4377 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
4378 | { |
4379 | return xdr_ressize_check(rqstp, p); | |
4380 | } | |
4381 | ||
3e98abff | 4382 | int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp) |
1da177e4 | 4383 | { |
3e98abff BF |
4384 | struct svc_rqst *rqstp = rq; |
4385 | struct nfsd4_compoundargs *args = rqstp->rq_argp; | |
4386 | ||
1da177e4 LT |
4387 | if (args->ops != args->iops) { |
4388 | kfree(args->ops); | |
4389 | args->ops = args->iops; | |
4390 | } | |
f99d49ad JJ |
4391 | kfree(args->tmpp); |
4392 | args->tmpp = NULL; | |
1da177e4 | 4393 | while (args->to_free) { |
d5e23383 | 4394 | struct svcxdr_tmpbuf *tb = args->to_free; |
1da177e4 | 4395 | args->to_free = tb->next; |
1da177e4 LT |
4396 | kfree(tb); |
4397 | } | |
3e98abff | 4398 | return 1; |
1da177e4 LT |
4399 | } |
4400 | ||
4401 | int | |
2ebbc012 | 4402 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 4403 | { |
e874f9f8 JL |
4404 | if (rqstp->rq_arg.head[0].iov_len % 4) { |
4405 | /* client is nuts */ | |
4406 | dprintk("%s: compound not properly padded! (peeraddr=%pISc xid=0x%x)", | |
4407 | __func__, svc_addr(rqstp), be32_to_cpu(rqstp->rq_xid)); | |
4408 | return 0; | |
4409 | } | |
1da177e4 LT |
4410 | args->p = p; |
4411 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
4412 | args->pagelist = rqstp->rq_arg.pages; | |
4413 | args->pagelen = rqstp->rq_arg.page_len; | |
4414 | args->tmpp = NULL; | |
4415 | args->to_free = NULL; | |
4416 | args->ops = args->iops; | |
4417 | args->rqstp = rqstp; | |
4418 | ||
3e98abff | 4419 | return !nfsd4_decode_compound(args); |
1da177e4 LT |
4420 | } |
4421 | ||
4422 | int | |
2ebbc012 | 4423 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
4424 | { |
4425 | /* | |
4426 | * All that remains is to write the tag and operation count... | |
4427 | */ | |
6ac90391 BF |
4428 | struct xdr_buf *buf = resp->xdr.buf; |
4429 | ||
4430 | WARN_ON_ONCE(buf->len != buf->head[0].iov_len + buf->page_len + | |
4431 | buf->tail[0].iov_len); | |
dd97fdde | 4432 | |
2825a7f9 BF |
4433 | rqstp->rq_next_page = resp->xdr.page_ptr + 1; |
4434 | ||
1da177e4 LT |
4435 | p = resp->tagp; |
4436 | *p++ = htonl(resp->taglen); | |
4437 | memcpy(p, resp->tag, resp->taglen); | |
4438 | p += XDR_QUADLEN(resp->taglen); | |
4439 | *p++ = htonl(resp->opcnt); | |
4440 | ||
b607664e | 4441 | nfsd4_sequence_done(resp); |
1da177e4 LT |
4442 | return 1; |
4443 | } | |
4444 | ||
4445 | /* | |
4446 | * Local variables: | |
4447 | * c-basic-offset: 8 | |
4448 | * End: | |
4449 | */ |