Commit | Line | Data |
---|---|---|
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" |
2ca72e17 | 50 | |
18032ca0 DQ |
51 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
52 | #include <linux/security.h> | |
53 | #endif | |
54 | ||
55 | ||
1da177e4 LT |
56 | #define NFSDDBG_FACILITY NFSDDBG_XDR |
57 | ||
42ca0993 BF |
58 | /* |
59 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing | |
60 | * directory in order to indicate to the client that a filesystem boundary is present | |
61 | * We use a fixed fsid for a referral | |
62 | */ | |
63 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL | |
64 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL | |
65 | ||
b37ad28b | 66 | static __be32 |
a36b1725 | 67 | check_filename(char *str, int len) |
1da177e4 LT |
68 | { |
69 | int i; | |
70 | ||
71 | if (len == 0) | |
72 | return nfserr_inval; | |
73 | if (isdotent(str, len)) | |
a36b1725 | 74 | return nfserr_badname; |
1da177e4 LT |
75 | for (i = 0; i < len; i++) |
76 | if (str[i] == '/') | |
a36b1725 | 77 | return nfserr_badname; |
1da177e4 LT |
78 | return 0; |
79 | } | |
80 | ||
1da177e4 | 81 | #define DECODE_HEAD \ |
2ebbc012 | 82 | __be32 *p; \ |
b37ad28b | 83 | __be32 status |
1da177e4 LT |
84 | #define DECODE_TAIL \ |
85 | status = 0; \ | |
86 | out: \ | |
87 | return status; \ | |
88 | xdr_error: \ | |
817cb9d4 CL |
89 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
90 | __FILE__, __LINE__); \ | |
1da177e4 LT |
91 | status = nfserr_bad_xdr; \ |
92 | goto out | |
93 | ||
1da177e4 LT |
94 | #define READMEM(x,nbytes) do { \ |
95 | x = (char *)p; \ | |
96 | p += XDR_QUADLEN(nbytes); \ | |
97 | } while (0) | |
98 | #define SAVEMEM(x,nbytes) do { \ | |
99 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
100 | savemem(argp, p, nbytes) : \ | |
101 | (char *)p)) { \ | |
817cb9d4 CL |
102 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
103 | __FILE__, __LINE__); \ | |
1da177e4 LT |
104 | goto xdr_error; \ |
105 | } \ | |
106 | p += XDR_QUADLEN(nbytes); \ | |
107 | } while (0) | |
108 | #define COPYMEM(x,nbytes) do { \ | |
109 | memcpy((x), p, nbytes); \ | |
110 | p += XDR_QUADLEN(nbytes); \ | |
111 | } while (0) | |
112 | ||
113 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ | |
114 | #define READ_BUF(nbytes) do { \ | |
115 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ | |
116 | p = argp->p; \ | |
117 | argp->p += XDR_QUADLEN(nbytes); \ | |
118 | } else if (!(p = read_buf(argp, nbytes))) { \ | |
817cb9d4 CL |
119 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
120 | __FILE__, __LINE__); \ | |
1da177e4 LT |
121 | goto xdr_error; \ |
122 | } \ | |
123 | } while (0) | |
124 | ||
590b7431 BF |
125 | static void next_decode_page(struct nfsd4_compoundargs *argp) |
126 | { | |
590b7431 | 127 | argp->p = page_address(argp->pagelist[0]); |
365da4ad | 128 | argp->pagelist++; |
590b7431 BF |
129 | if (argp->pagelen < PAGE_SIZE) { |
130 | argp->end = argp->p + (argp->pagelen>>2); | |
131 | argp->pagelen = 0; | |
132 | } else { | |
133 | argp->end = argp->p + (PAGE_SIZE>>2); | |
134 | argp->pagelen -= PAGE_SIZE; | |
135 | } | |
136 | } | |
137 | ||
ca2a05aa | 138 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
1da177e4 LT |
139 | { |
140 | /* We want more bytes than seem to be available. | |
141 | * Maybe we need a new page, maybe we have just run out | |
142 | */ | |
ca2a05aa | 143 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
2ebbc012 | 144 | __be32 *p; |
1da177e4 LT |
145 | if (avail + argp->pagelen < nbytes) |
146 | return NULL; | |
147 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ | |
148 | return NULL; | |
149 | /* ok, we can do it with the current plus the next page */ | |
150 | if (nbytes <= sizeof(argp->tmp)) | |
151 | p = argp->tmp; | |
152 | else { | |
f99d49ad | 153 | kfree(argp->tmpp); |
1da177e4 LT |
154 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
155 | if (!p) | |
156 | return NULL; | |
157 | ||
158 | } | |
ca2a05aa BF |
159 | /* |
160 | * The following memcpy is safe because read_buf is always | |
161 | * called with nbytes > avail, and the two cases above both | |
162 | * guarantee p points to at least nbytes bytes. | |
163 | */ | |
1da177e4 | 164 | memcpy(p, argp->p, avail); |
590b7431 | 165 | next_decode_page(argp); |
1da177e4 LT |
166 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); |
167 | argp->p += XDR_QUADLEN(nbytes - avail); | |
168 | return p; | |
169 | } | |
170 | ||
60adfc50 AA |
171 | static int zero_clientid(clientid_t *clid) |
172 | { | |
173 | return (clid->cl_boot == 0) && (clid->cl_id == 0); | |
174 | } | |
175 | ||
2d8498db | 176 | /** |
d5e23383 | 177 | * svcxdr_tmpalloc - allocate memory to be freed after compound processing |
ce043ac8 BF |
178 | * @argp: NFSv4 compound argument structure |
179 | * @p: pointer to be freed (with kfree()) | |
2d8498db CH |
180 | * |
181 | * Marks @p to be freed when processing the compound operation | |
182 | * described in @argp finishes. | |
183 | */ | |
d5e23383 BF |
184 | static void * |
185 | svcxdr_tmpalloc(struct nfsd4_compoundargs *argp, u32 len) | |
1da177e4 | 186 | { |
d5e23383 | 187 | struct svcxdr_tmpbuf *tb; |
1da177e4 | 188 | |
d5e23383 | 189 | tb = kmalloc(sizeof(*tb) + len, GFP_KERNEL); |
1da177e4 | 190 | if (!tb) |
d5e23383 | 191 | return NULL; |
1da177e4 LT |
192 | tb->next = argp->to_free; |
193 | argp->to_free = tb; | |
d5e23383 | 194 | return tb->buf; |
1da177e4 LT |
195 | } |
196 | ||
29c353b3 BF |
197 | /* |
198 | * For xdr strings that need to be passed to other kernel api's | |
199 | * as null-terminated strings. | |
200 | * | |
201 | * Note null-terminating in place usually isn't safe since the | |
202 | * buffer might end on a page boundary. | |
203 | */ | |
204 | static char * | |
205 | svcxdr_dupstr(struct nfsd4_compoundargs *argp, void *buf, u32 len) | |
206 | { | |
d5e23383 | 207 | char *p = svcxdr_tmpalloc(argp, len + 1); |
29c353b3 BF |
208 | |
209 | if (!p) | |
210 | return NULL; | |
211 | memcpy(p, buf, len); | |
212 | p[len] = '\0'; | |
29c353b3 | 213 | return p; |
1da177e4 LT |
214 | } |
215 | ||
2d8498db CH |
216 | /** |
217 | * savemem - duplicate a chunk of memory for later processing | |
218 | * @argp: NFSv4 compound argument structure to be freed with | |
219 | * @p: pointer to be duplicated | |
220 | * @nbytes: length to be duplicated | |
221 | * | |
222 | * Returns a pointer to a copy of @nbytes bytes of memory at @p | |
223 | * that are preserved until processing of the NFSv4 compound | |
224 | * operation described by @argp finishes. | |
225 | */ | |
2ebbc012 | 226 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
1da177e4 | 227 | { |
d5e23383 BF |
228 | void *ret; |
229 | ||
230 | ret = svcxdr_tmpalloc(argp, nbytes); | |
231 | if (!ret) | |
1da177e4 | 232 | return NULL; |
d5e23383 BF |
233 | memcpy(ret, p, nbytes); |
234 | return ret; | |
1da177e4 LT |
235 | } |
236 | ||
b37ad28b | 237 | static __be32 |
1da177e4 LT |
238 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
239 | { | |
240 | u32 bmlen; | |
241 | DECODE_HEAD; | |
242 | ||
243 | bmval[0] = 0; | |
244 | bmval[1] = 0; | |
7e705706 | 245 | bmval[2] = 0; |
1da177e4 LT |
246 | |
247 | READ_BUF(4); | |
06553991 | 248 | bmlen = be32_to_cpup(p++); |
1da177e4 LT |
249 | if (bmlen > 1000) |
250 | goto xdr_error; | |
251 | ||
252 | READ_BUF(bmlen << 2); | |
253 | if (bmlen > 0) | |
06553991 | 254 | bmval[0] = be32_to_cpup(p++); |
1da177e4 | 255 | if (bmlen > 1) |
06553991 | 256 | bmval[1] = be32_to_cpup(p++); |
7e705706 | 257 | if (bmlen > 2) |
06553991 | 258 | bmval[2] = be32_to_cpup(p++); |
1da177e4 LT |
259 | |
260 | DECODE_TAIL; | |
261 | } | |
262 | ||
b37ad28b | 263 | static __be32 |
3c8e0316 | 264 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, |
18032ca0 DQ |
265 | struct iattr *iattr, struct nfs4_acl **acl, |
266 | struct xdr_netobj *label) | |
1da177e4 LT |
267 | { |
268 | int expected_len, len = 0; | |
269 | u32 dummy32; | |
542d1ab3 | 270 | u64 sec; |
1da177e4 LT |
271 | char *buf; |
272 | ||
273 | DECODE_HEAD; | |
274 | iattr->ia_valid = 0; | |
275 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
276 | return status; | |
277 | ||
1da177e4 | 278 | READ_BUF(4); |
06553991 | 279 | expected_len = be32_to_cpup(p++); |
1da177e4 LT |
280 | |
281 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
282 | READ_BUF(8); | |
283 | len += 8; | |
542d1ab3 | 284 | p = xdr_decode_hyper(p, &iattr->ia_size); |
1da177e4 LT |
285 | iattr->ia_valid |= ATTR_SIZE; |
286 | } | |
287 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
64a817cf | 288 | u32 nace; |
28e05dd8 | 289 | struct nfs4_ace *ace; |
1da177e4 LT |
290 | |
291 | READ_BUF(4); len += 4; | |
06553991 | 292 | nace = be32_to_cpup(p++); |
1da177e4 | 293 | |
28e05dd8 | 294 | if (nace > NFS4_ACL_MAX) |
798df338 | 295 | return nfserr_fbig; |
28e05dd8 | 296 | |
d5e23383 | 297 | *acl = svcxdr_tmpalloc(argp, nfs4_acl_bytes(nace)); |
eba1c99c KM |
298 | if (*acl == NULL) |
299 | return nfserr_jukebox; | |
300 | ||
28e05dd8 BF |
301 | (*acl)->naces = nace; |
302 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { | |
1da177e4 | 303 | READ_BUF(16); len += 16; |
06553991 BF |
304 | ace->type = be32_to_cpup(p++); |
305 | ace->flag = be32_to_cpup(p++); | |
306 | ace->access_mask = be32_to_cpup(p++); | |
307 | dummy32 = be32_to_cpup(p++); | |
1da177e4 LT |
308 | READ_BUF(dummy32); |
309 | len += XDR_QUADLEN(dummy32) << 2; | |
310 | READMEM(buf, dummy32); | |
28e05dd8 | 311 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
3c726023 | 312 | status = nfs_ok; |
28e05dd8 | 313 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ab8e4aee | 314 | ; |
28e05dd8 | 315 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
3c726023 | 316 | status = nfsd_map_name_to_gid(argp->rqstp, |
ab8e4aee | 317 | buf, dummy32, &ace->who_gid); |
1da177e4 | 318 | else |
3c726023 | 319 | status = nfsd_map_name_to_uid(argp->rqstp, |
ab8e4aee | 320 | buf, dummy32, &ace->who_uid); |
3c726023 BF |
321 | if (status) |
322 | return status; | |
1da177e4 LT |
323 | } |
324 | } else | |
325 | *acl = NULL; | |
326 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
327 | READ_BUF(4); | |
328 | len += 4; | |
06553991 | 329 | iattr->ia_mode = be32_to_cpup(p++); |
1da177e4 LT |
330 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); |
331 | iattr->ia_valid |= ATTR_MODE; | |
332 | } | |
333 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
334 | READ_BUF(4); | |
335 | len += 4; | |
06553991 | 336 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
337 | READ_BUF(dummy32); |
338 | len += (XDR_QUADLEN(dummy32) << 2); | |
339 | READMEM(buf, dummy32); | |
47c85291 N |
340 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
341 | return status; | |
1da177e4 LT |
342 | iattr->ia_valid |= ATTR_UID; |
343 | } | |
344 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
345 | READ_BUF(4); | |
346 | len += 4; | |
06553991 | 347 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
348 | READ_BUF(dummy32); |
349 | len += (XDR_QUADLEN(dummy32) << 2); | |
350 | READMEM(buf, dummy32); | |
47c85291 N |
351 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
352 | return status; | |
1da177e4 LT |
353 | iattr->ia_valid |= ATTR_GID; |
354 | } | |
355 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
356 | READ_BUF(4); | |
357 | len += 4; | |
06553991 | 358 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
359 | switch (dummy32) { |
360 | case NFS4_SET_TO_CLIENT_TIME: | |
361 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
362 | all 32 bits of 'nseconds'. */ | |
363 | READ_BUF(12); | |
364 | len += 12; | |
542d1ab3 BF |
365 | p = xdr_decode_hyper(p, &sec); |
366 | iattr->ia_atime.tv_sec = (time_t)sec; | |
06553991 | 367 | iattr->ia_atime.tv_nsec = be32_to_cpup(p++); |
1da177e4 LT |
368 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) |
369 | return nfserr_inval; | |
370 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); | |
371 | break; | |
372 | case NFS4_SET_TO_SERVER_TIME: | |
373 | iattr->ia_valid |= ATTR_ATIME; | |
374 | break; | |
375 | default: | |
376 | goto xdr_error; | |
377 | } | |
378 | } | |
1da177e4 LT |
379 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
380 | READ_BUF(4); | |
381 | len += 4; | |
06553991 | 382 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
383 | switch (dummy32) { |
384 | case NFS4_SET_TO_CLIENT_TIME: | |
385 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
386 | all 32 bits of 'nseconds'. */ | |
387 | READ_BUF(12); | |
388 | len += 12; | |
542d1ab3 BF |
389 | p = xdr_decode_hyper(p, &sec); |
390 | iattr->ia_mtime.tv_sec = sec; | |
06553991 | 391 | iattr->ia_mtime.tv_nsec = be32_to_cpup(p++); |
1da177e4 LT |
392 | if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) |
393 | return nfserr_inval; | |
394 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); | |
395 | break; | |
396 | case NFS4_SET_TO_SERVER_TIME: | |
397 | iattr->ia_valid |= ATTR_MTIME; | |
398 | break; | |
399 | default: | |
400 | goto xdr_error; | |
401 | } | |
402 | } | |
18032ca0 DQ |
403 | |
404 | label->len = 0; | |
405 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL | |
406 | if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) { | |
407 | READ_BUF(4); | |
408 | len += 4; | |
06553991 | 409 | dummy32 = be32_to_cpup(p++); /* lfs: we don't use it */ |
18032ca0 DQ |
410 | READ_BUF(4); |
411 | len += 4; | |
06553991 | 412 | dummy32 = be32_to_cpup(p++); /* pi: we don't use it either */ |
18032ca0 DQ |
413 | READ_BUF(4); |
414 | len += 4; | |
06553991 | 415 | dummy32 = be32_to_cpup(p++); |
18032ca0 DQ |
416 | READ_BUF(dummy32); |
417 | if (dummy32 > NFSD4_MAX_SEC_LABEL_LEN) | |
418 | return nfserr_badlabel; | |
419 | len += (XDR_QUADLEN(dummy32) << 2); | |
420 | READMEM(buf, dummy32); | |
29c353b3 BF |
421 | label->len = dummy32; |
422 | label->data = svcxdr_dupstr(argp, buf, dummy32); | |
18032ca0 DQ |
423 | if (!label->data) |
424 | return nfserr_jukebox; | |
18032ca0 DQ |
425 | } |
426 | #endif | |
427 | ||
3c8e0316 YZ |
428 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
429 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 | |
430 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) | |
431 | READ_BUF(expected_len - len); | |
432 | else if (len != expected_len) | |
1da177e4 LT |
433 | goto xdr_error; |
434 | ||
435 | DECODE_TAIL; | |
1da177e4 LT |
436 | } |
437 | ||
e31a1b66 BH |
438 | static __be32 |
439 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
440 | { | |
441 | DECODE_HEAD; | |
442 | ||
443 | READ_BUF(sizeof(stateid_t)); | |
06553991 | 444 | sid->si_generation = be32_to_cpup(p++); |
e31a1b66 BH |
445 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); |
446 | ||
447 | DECODE_TAIL; | |
448 | } | |
449 | ||
b37ad28b | 450 | static __be32 |
1da177e4 LT |
451 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
452 | { | |
453 | DECODE_HEAD; | |
454 | ||
455 | READ_BUF(4); | |
06553991 | 456 | access->ac_req_access = be32_to_cpup(p++); |
1da177e4 LT |
457 | |
458 | DECODE_TAIL; | |
459 | } | |
460 | ||
acb2887e BF |
461 | static __be32 nfsd4_decode_cb_sec(struct nfsd4_compoundargs *argp, struct nfsd4_cb_sec *cbs) |
462 | { | |
463 | DECODE_HEAD; | |
12fc3e92 | 464 | u32 dummy, uid, gid; |
acb2887e BF |
465 | char *machine_name; |
466 | int i; | |
467 | int nr_secflavs; | |
468 | ||
469 | /* callback_sec_params4 */ | |
470 | READ_BUF(4); | |
06553991 | 471 | nr_secflavs = be32_to_cpup(p++); |
57569a70 BF |
472 | if (nr_secflavs) |
473 | cbs->flavor = (u32)(-1); | |
474 | else | |
475 | /* Is this legal? Be generous, take it to mean AUTH_NONE: */ | |
476 | cbs->flavor = 0; | |
acb2887e BF |
477 | for (i = 0; i < nr_secflavs; ++i) { |
478 | READ_BUF(4); | |
06553991 | 479 | dummy = be32_to_cpup(p++); |
acb2887e BF |
480 | switch (dummy) { |
481 | case RPC_AUTH_NULL: | |
482 | /* Nothing to read */ | |
12fc3e92 BF |
483 | if (cbs->flavor == (u32)(-1)) |
484 | cbs->flavor = RPC_AUTH_NULL; | |
acb2887e BF |
485 | break; |
486 | case RPC_AUTH_UNIX: | |
487 | READ_BUF(8); | |
488 | /* stamp */ | |
06553991 | 489 | dummy = be32_to_cpup(p++); |
acb2887e BF |
490 | |
491 | /* machine name */ | |
06553991 | 492 | dummy = be32_to_cpup(p++); |
acb2887e BF |
493 | READ_BUF(dummy); |
494 | SAVEMEM(machine_name, dummy); | |
495 | ||
496 | /* uid, gid */ | |
497 | READ_BUF(8); | |
06553991 BF |
498 | uid = be32_to_cpup(p++); |
499 | gid = be32_to_cpup(p++); | |
acb2887e BF |
500 | |
501 | /* more gids */ | |
502 | READ_BUF(4); | |
06553991 | 503 | dummy = be32_to_cpup(p++); |
acb2887e | 504 | READ_BUF(dummy * 4); |
12fc3e92 | 505 | if (cbs->flavor == (u32)(-1)) { |
03bc6d1c EB |
506 | kuid_t kuid = make_kuid(&init_user_ns, uid); |
507 | kgid_t kgid = make_kgid(&init_user_ns, gid); | |
508 | if (uid_valid(kuid) && gid_valid(kgid)) { | |
509 | cbs->uid = kuid; | |
510 | cbs->gid = kgid; | |
511 | cbs->flavor = RPC_AUTH_UNIX; | |
512 | } else { | |
513 | dprintk("RPC_AUTH_UNIX with invalid" | |
514 | "uid or gid ignoring!\n"); | |
515 | } | |
12fc3e92 | 516 | } |
acb2887e BF |
517 | break; |
518 | case RPC_AUTH_GSS: | |
519 | dprintk("RPC_AUTH_GSS callback secflavor " | |
520 | "not supported!\n"); | |
521 | READ_BUF(8); | |
522 | /* gcbp_service */ | |
06553991 | 523 | dummy = be32_to_cpup(p++); |
acb2887e | 524 | /* gcbp_handle_from_server */ |
06553991 | 525 | dummy = be32_to_cpup(p++); |
acb2887e BF |
526 | READ_BUF(dummy); |
527 | p += XDR_QUADLEN(dummy); | |
528 | /* gcbp_handle_from_client */ | |
529 | READ_BUF(4); | |
06553991 | 530 | dummy = be32_to_cpup(p++); |
acb2887e BF |
531 | READ_BUF(dummy); |
532 | break; | |
533 | default: | |
534 | dprintk("Illegal callback secflavor\n"); | |
535 | return nfserr_inval; | |
536 | } | |
537 | } | |
538 | DECODE_TAIL; | |
539 | } | |
540 | ||
cb73a9f4 BF |
541 | static __be32 nfsd4_decode_backchannel_ctl(struct nfsd4_compoundargs *argp, struct nfsd4_backchannel_ctl *bc) |
542 | { | |
543 | DECODE_HEAD; | |
544 | ||
545 | READ_BUF(4); | |
06553991 | 546 | bc->bc_cb_program = be32_to_cpup(p++); |
cb73a9f4 BF |
547 | nfsd4_decode_cb_sec(argp, &bc->bc_cb_sec); |
548 | ||
549 | DECODE_TAIL; | |
550 | } | |
551 | ||
1d1bc8f2 BF |
552 | static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) |
553 | { | |
554 | DECODE_HEAD; | |
1d1bc8f2 BF |
555 | |
556 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 8); | |
557 | COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
06553991 | 558 | bcts->dir = be32_to_cpup(p++); |
6ce2357f BS |
559 | /* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker |
560 | * could help us figure out we should be using it. */ | |
1d1bc8f2 BF |
561 | DECODE_TAIL; |
562 | } | |
563 | ||
b37ad28b | 564 | static __be32 |
1da177e4 LT |
565 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
566 | { | |
567 | DECODE_HEAD; | |
568 | ||
e31a1b66 | 569 | READ_BUF(4); |
06553991 | 570 | close->cl_seqid = be32_to_cpup(p++); |
e31a1b66 | 571 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
1da177e4 LT |
572 | |
573 | DECODE_TAIL; | |
574 | } | |
575 | ||
576 | ||
b37ad28b | 577 | static __be32 |
1da177e4 LT |
578 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
579 | { | |
580 | DECODE_HEAD; | |
581 | ||
582 | READ_BUF(12); | |
542d1ab3 | 583 | p = xdr_decode_hyper(p, &commit->co_offset); |
06553991 | 584 | commit->co_count = be32_to_cpup(p++); |
1da177e4 LT |
585 | |
586 | DECODE_TAIL; | |
587 | } | |
588 | ||
b37ad28b | 589 | static __be32 |
1da177e4 LT |
590 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
591 | { | |
592 | DECODE_HEAD; | |
593 | ||
594 | READ_BUF(4); | |
06553991 | 595 | create->cr_type = be32_to_cpup(p++); |
1da177e4 LT |
596 | switch (create->cr_type) { |
597 | case NF4LNK: | |
598 | READ_BUF(4); | |
7fb84306 BF |
599 | create->cr_datalen = be32_to_cpup(p++); |
600 | READ_BUF(create->cr_datalen); | |
29c353b3 | 601 | create->cr_data = svcxdr_dupstr(argp, p, create->cr_datalen); |
7fb84306 | 602 | if (!create->cr_data) |
76f47128 | 603 | return nfserr_jukebox; |
1da177e4 LT |
604 | break; |
605 | case NF4BLK: | |
606 | case NF4CHR: | |
607 | READ_BUF(8); | |
06553991 BF |
608 | create->cr_specdata1 = be32_to_cpup(p++); |
609 | create->cr_specdata2 = be32_to_cpup(p++); | |
1da177e4 LT |
610 | break; |
611 | case NF4SOCK: | |
612 | case NF4FIFO: | |
613 | case NF4DIR: | |
614 | default: | |
615 | break; | |
616 | } | |
617 | ||
618 | READ_BUF(4); | |
06553991 | 619 | create->cr_namelen = be32_to_cpup(p++); |
1da177e4 LT |
620 | READ_BUF(create->cr_namelen); |
621 | SAVEMEM(create->cr_name, create->cr_namelen); | |
a36b1725 | 622 | if ((status = check_filename(create->cr_name, create->cr_namelen))) |
1da177e4 LT |
623 | return status; |
624 | ||
3c8e0316 | 625 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
18032ca0 | 626 | &create->cr_acl, &create->cr_label); |
c0d6fc8a | 627 | if (status) |
1da177e4 LT |
628 | goto out; |
629 | ||
630 | DECODE_TAIL; | |
631 | } | |
632 | ||
b37ad28b | 633 | static inline __be32 |
1da177e4 LT |
634 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
635 | { | |
e31a1b66 | 636 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
1da177e4 LT |
637 | } |
638 | ||
b37ad28b | 639 | static inline __be32 |
1da177e4 LT |
640 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
641 | { | |
642 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
643 | } | |
644 | ||
b37ad28b | 645 | static __be32 |
1da177e4 LT |
646 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
647 | { | |
648 | DECODE_HEAD; | |
649 | ||
650 | READ_BUF(4); | |
06553991 | 651 | link->li_namelen = be32_to_cpup(p++); |
1da177e4 LT |
652 | READ_BUF(link->li_namelen); |
653 | SAVEMEM(link->li_name, link->li_namelen); | |
a36b1725 | 654 | if ((status = check_filename(link->li_name, link->li_namelen))) |
1da177e4 LT |
655 | return status; |
656 | ||
657 | DECODE_TAIL; | |
658 | } | |
659 | ||
b37ad28b | 660 | static __be32 |
1da177e4 LT |
661 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
662 | { | |
663 | DECODE_HEAD; | |
664 | ||
1da177e4 LT |
665 | /* |
666 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
667 | */ | |
668 | READ_BUF(28); | |
06553991 | 669 | lock->lk_type = be32_to_cpup(p++); |
1da177e4 LT |
670 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) |
671 | goto xdr_error; | |
06553991 | 672 | lock->lk_reclaim = be32_to_cpup(p++); |
542d1ab3 BF |
673 | p = xdr_decode_hyper(p, &lock->lk_offset); |
674 | p = xdr_decode_hyper(p, &lock->lk_length); | |
06553991 | 675 | lock->lk_is_new = be32_to_cpup(p++); |
1da177e4 LT |
676 | |
677 | if (lock->lk_is_new) { | |
e31a1b66 | 678 | READ_BUF(4); |
06553991 | 679 | lock->lk_new_open_seqid = be32_to_cpup(p++); |
e31a1b66 BH |
680 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
681 | if (status) | |
682 | return status; | |
683 | READ_BUF(8 + sizeof(clientid_t)); | |
06553991 | 684 | lock->lk_new_lock_seqid = be32_to_cpup(p++); |
1da177e4 | 685 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); |
06553991 | 686 | lock->lk_new_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
687 | READ_BUF(lock->lk_new_owner.len); |
688 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
689 | } else { | |
e31a1b66 BH |
690 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
691 | if (status) | |
692 | return status; | |
693 | READ_BUF(4); | |
06553991 | 694 | lock->lk_old_lock_seqid = be32_to_cpup(p++); |
1da177e4 LT |
695 | } |
696 | ||
697 | DECODE_TAIL; | |
698 | } | |
699 | ||
b37ad28b | 700 | static __be32 |
1da177e4 LT |
701 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
702 | { | |
703 | DECODE_HEAD; | |
704 | ||
705 | READ_BUF(32); | |
06553991 | 706 | lockt->lt_type = be32_to_cpup(p++); |
1da177e4 LT |
707 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) |
708 | goto xdr_error; | |
542d1ab3 BF |
709 | p = xdr_decode_hyper(p, &lockt->lt_offset); |
710 | p = xdr_decode_hyper(p, &lockt->lt_length); | |
1da177e4 | 711 | COPYMEM(&lockt->lt_clientid, 8); |
06553991 | 712 | lockt->lt_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
713 | READ_BUF(lockt->lt_owner.len); |
714 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
715 | ||
716 | DECODE_TAIL; | |
717 | } | |
718 | ||
b37ad28b | 719 | static __be32 |
1da177e4 LT |
720 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
721 | { | |
722 | DECODE_HEAD; | |
723 | ||
e31a1b66 | 724 | READ_BUF(8); |
06553991 | 725 | locku->lu_type = be32_to_cpup(p++); |
1da177e4 LT |
726 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) |
727 | goto xdr_error; | |
06553991 | 728 | locku->lu_seqid = be32_to_cpup(p++); |
e31a1b66 BH |
729 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
730 | if (status) | |
731 | return status; | |
732 | READ_BUF(16); | |
542d1ab3 BF |
733 | p = xdr_decode_hyper(p, &locku->lu_offset); |
734 | p = xdr_decode_hyper(p, &locku->lu_length); | |
1da177e4 LT |
735 | |
736 | DECODE_TAIL; | |
737 | } | |
738 | ||
b37ad28b | 739 | static __be32 |
1da177e4 LT |
740 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
741 | { | |
742 | DECODE_HEAD; | |
743 | ||
744 | READ_BUF(4); | |
06553991 | 745 | lookup->lo_len = be32_to_cpup(p++); |
1da177e4 LT |
746 | READ_BUF(lookup->lo_len); |
747 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
a36b1725 | 748 | if ((status = check_filename(lookup->lo_name, lookup->lo_len))) |
1da177e4 LT |
749 | return status; |
750 | ||
751 | DECODE_TAIL; | |
752 | } | |
753 | ||
2c8bd7e0 | 754 | static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when) |
04f9e664 BF |
755 | { |
756 | __be32 *p; | |
757 | u32 w; | |
758 | ||
759 | READ_BUF(4); | |
06553991 | 760 | w = be32_to_cpup(p++); |
2c8bd7e0 BH |
761 | *share_access = w & NFS4_SHARE_ACCESS_MASK; |
762 | *deleg_want = w & NFS4_SHARE_WANT_MASK; | |
763 | if (deleg_when) | |
764 | *deleg_when = w & NFS4_SHARE_WHEN_MASK; | |
765 | ||
04f9e664 BF |
766 | switch (w & NFS4_SHARE_ACCESS_MASK) { |
767 | case NFS4_SHARE_ACCESS_READ: | |
768 | case NFS4_SHARE_ACCESS_WRITE: | |
769 | case NFS4_SHARE_ACCESS_BOTH: | |
770 | break; | |
771 | default: | |
772 | return nfserr_bad_xdr; | |
773 | } | |
fc0d14fe | 774 | w &= ~NFS4_SHARE_ACCESS_MASK; |
04f9e664 BF |
775 | if (!w) |
776 | return nfs_ok; | |
777 | if (!argp->minorversion) | |
778 | return nfserr_bad_xdr; | |
779 | switch (w & NFS4_SHARE_WANT_MASK) { | |
780 | case NFS4_SHARE_WANT_NO_PREFERENCE: | |
781 | case NFS4_SHARE_WANT_READ_DELEG: | |
782 | case NFS4_SHARE_WANT_WRITE_DELEG: | |
783 | case NFS4_SHARE_WANT_ANY_DELEG: | |
784 | case NFS4_SHARE_WANT_NO_DELEG: | |
785 | case NFS4_SHARE_WANT_CANCEL: | |
786 | break; | |
787 | default: | |
788 | return nfserr_bad_xdr; | |
789 | } | |
92bac8c5 | 790 | w &= ~NFS4_SHARE_WANT_MASK; |
04f9e664 BF |
791 | if (!w) |
792 | return nfs_ok; | |
2c8bd7e0 BH |
793 | |
794 | if (!deleg_when) /* open_downgrade */ | |
795 | return nfserr_inval; | |
04f9e664 BF |
796 | switch (w) { |
797 | case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL: | |
798 | case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED: | |
c668fc6d BH |
799 | case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL | |
800 | NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED): | |
04f9e664 BF |
801 | return nfs_ok; |
802 | } | |
803 | xdr_error: | |
804 | return nfserr_bad_xdr; | |
805 | } | |
806 | ||
807 | static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x) | |
808 | { | |
809 | __be32 *p; | |
810 | ||
811 | READ_BUF(4); | |
06553991 | 812 | *x = be32_to_cpup(p++); |
04f9e664 | 813 | /* Note: unlinke access bits, deny bits may be zero. */ |
01cd4afa | 814 | if (*x & ~NFS4_SHARE_DENY_BOTH) |
04f9e664 BF |
815 | return nfserr_bad_xdr; |
816 | return nfs_ok; | |
817 | xdr_error: | |
818 | return nfserr_bad_xdr; | |
819 | } | |
820 | ||
a084daf5 BF |
821 | static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o) |
822 | { | |
823 | __be32 *p; | |
824 | ||
825 | READ_BUF(4); | |
06553991 | 826 | o->len = be32_to_cpup(p++); |
a084daf5 BF |
827 | |
828 | if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT) | |
829 | return nfserr_bad_xdr; | |
830 | ||
831 | READ_BUF(o->len); | |
832 | SAVEMEM(o->data, o->len); | |
833 | return nfs_ok; | |
834 | xdr_error: | |
835 | return nfserr_bad_xdr; | |
836 | } | |
837 | ||
b37ad28b | 838 | static __be32 |
1da177e4 LT |
839 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
840 | { | |
841 | DECODE_HEAD; | |
2c8bd7e0 | 842 | u32 dummy; |
1da177e4 LT |
843 | |
844 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
845 | open->op_iattr.ia_valid = 0; | |
fe0750e5 | 846 | open->op_openowner = NULL; |
1da177e4 | 847 | |
9d313b17 | 848 | open->op_xdr_error = 0; |
1da177e4 | 849 | /* seqid, share_access, share_deny, clientid, ownerlen */ |
04f9e664 | 850 | READ_BUF(4); |
06553991 | 851 | open->op_seqid = be32_to_cpup(p++); |
2c8bd7e0 BH |
852 | /* decode, yet ignore deleg_when until supported */ |
853 | status = nfsd4_decode_share_access(argp, &open->op_share_access, | |
854 | &open->op_deleg_want, &dummy); | |
04f9e664 BF |
855 | if (status) |
856 | goto xdr_error; | |
857 | status = nfsd4_decode_share_deny(argp, &open->op_share_deny); | |
858 | if (status) | |
859 | goto xdr_error; | |
a084daf5 | 860 | READ_BUF(sizeof(clientid_t)); |
1da177e4 | 861 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); |
a084daf5 BF |
862 | status = nfsd4_decode_opaque(argp, &open->op_owner); |
863 | if (status) | |
864 | goto xdr_error; | |
865 | READ_BUF(4); | |
06553991 | 866 | open->op_create = be32_to_cpup(p++); |
1da177e4 LT |
867 | switch (open->op_create) { |
868 | case NFS4_OPEN_NOCREATE: | |
869 | break; | |
870 | case NFS4_OPEN_CREATE: | |
871 | READ_BUF(4); | |
06553991 | 872 | open->op_createmode = be32_to_cpup(p++); |
1da177e4 LT |
873 | switch (open->op_createmode) { |
874 | case NFS4_CREATE_UNCHECKED: | |
875 | case NFS4_CREATE_GUARDED: | |
c0d6fc8a | 876 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
18032ca0 | 877 | &open->op_iattr, &open->op_acl, &open->op_label); |
c0d6fc8a | 878 | if (status) |
1da177e4 LT |
879 | goto out; |
880 | break; | |
881 | case NFS4_CREATE_EXCLUSIVE: | |
ab4684d1 CL |
882 | READ_BUF(NFS4_VERIFIER_SIZE); |
883 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 884 | break; |
79fb54ab BH |
885 | case NFS4_CREATE_EXCLUSIVE4_1: |
886 | if (argp->minorversion < 1) | |
887 | goto xdr_error; | |
ab4684d1 CL |
888 | READ_BUF(NFS4_VERIFIER_SIZE); |
889 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
79fb54ab | 890 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
18032ca0 | 891 | &open->op_iattr, &open->op_acl, &open->op_label); |
79fb54ab BH |
892 | if (status) |
893 | goto out; | |
894 | break; | |
1da177e4 LT |
895 | default: |
896 | goto xdr_error; | |
897 | } | |
898 | break; | |
899 | default: | |
900 | goto xdr_error; | |
901 | } | |
902 | ||
903 | /* open_claim */ | |
904 | READ_BUF(4); | |
06553991 | 905 | open->op_claim_type = be32_to_cpup(p++); |
1da177e4 LT |
906 | switch (open->op_claim_type) { |
907 | case NFS4_OPEN_CLAIM_NULL: | |
908 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
909 | READ_BUF(4); | |
06553991 | 910 | open->op_fname.len = be32_to_cpup(p++); |
1da177e4 LT |
911 | READ_BUF(open->op_fname.len); |
912 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 913 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
914 | return status; |
915 | break; | |
916 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
917 | READ_BUF(4); | |
06553991 | 918 | open->op_delegate_type = be32_to_cpup(p++); |
1da177e4 LT |
919 | break; |
920 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
e31a1b66 BH |
921 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
922 | if (status) | |
923 | return status; | |
924 | READ_BUF(4); | |
06553991 | 925 | open->op_fname.len = be32_to_cpup(p++); |
1da177e4 LT |
926 | READ_BUF(open->op_fname.len); |
927 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 928 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
929 | return status; |
930 | break; | |
8b289b2c BF |
931 | case NFS4_OPEN_CLAIM_FH: |
932 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
933 | if (argp->minorversion < 1) | |
934 | goto xdr_error; | |
935 | /* void */ | |
936 | break; | |
937 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
938 | if (argp->minorversion < 1) | |
939 | goto xdr_error; | |
940 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); | |
941 | if (status) | |
942 | return status; | |
943 | break; | |
1da177e4 LT |
944 | default: |
945 | goto xdr_error; | |
946 | } | |
947 | ||
948 | DECODE_TAIL; | |
949 | } | |
950 | ||
b37ad28b | 951 | static __be32 |
1da177e4 LT |
952 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
953 | { | |
954 | DECODE_HEAD; | |
e1a90ebd AS |
955 | |
956 | if (argp->minorversion >= 1) | |
957 | return nfserr_notsupp; | |
958 | ||
e31a1b66 BH |
959 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
960 | if (status) | |
961 | return status; | |
962 | READ_BUF(4); | |
06553991 | 963 | open_conf->oc_seqid = be32_to_cpup(p++); |
e1a90ebd | 964 | |
1da177e4 LT |
965 | DECODE_TAIL; |
966 | } | |
967 | ||
b37ad28b | 968 | static __be32 |
1da177e4 LT |
969 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
970 | { | |
971 | DECODE_HEAD; | |
972 | ||
e31a1b66 BH |
973 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
974 | if (status) | |
975 | return status; | |
04f9e664 | 976 | READ_BUF(4); |
06553991 | 977 | open_down->od_seqid = be32_to_cpup(p++); |
2c8bd7e0 BH |
978 | status = nfsd4_decode_share_access(argp, &open_down->od_share_access, |
979 | &open_down->od_deleg_want, NULL); | |
04f9e664 BF |
980 | if (status) |
981 | return status; | |
982 | status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny); | |
983 | if (status) | |
984 | return status; | |
1da177e4 LT |
985 | DECODE_TAIL; |
986 | } | |
987 | ||
b37ad28b | 988 | static __be32 |
1da177e4 LT |
989 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
990 | { | |
991 | DECODE_HEAD; | |
992 | ||
993 | READ_BUF(4); | |
06553991 | 994 | putfh->pf_fhlen = be32_to_cpup(p++); |
1da177e4 LT |
995 | if (putfh->pf_fhlen > NFS4_FHSIZE) |
996 | goto xdr_error; | |
997 | READ_BUF(putfh->pf_fhlen); | |
998 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
999 | ||
1000 | DECODE_TAIL; | |
1001 | } | |
1002 | ||
e1a90ebd AS |
1003 | static __be32 |
1004 | nfsd4_decode_putpubfh(struct nfsd4_compoundargs *argp, void *p) | |
1005 | { | |
1006 | if (argp->minorversion == 0) | |
1007 | return nfs_ok; | |
1008 | return nfserr_notsupp; | |
1009 | } | |
1010 | ||
b37ad28b | 1011 | static __be32 |
1da177e4 LT |
1012 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
1013 | { | |
1014 | DECODE_HEAD; | |
1015 | ||
e31a1b66 BH |
1016 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
1017 | if (status) | |
1018 | return status; | |
1019 | READ_BUF(12); | |
542d1ab3 | 1020 | p = xdr_decode_hyper(p, &read->rd_offset); |
06553991 | 1021 | read->rd_length = be32_to_cpup(p++); |
1da177e4 LT |
1022 | |
1023 | DECODE_TAIL; | |
1024 | } | |
1025 | ||
b37ad28b | 1026 | static __be32 |
1da177e4 LT |
1027 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
1028 | { | |
1029 | DECODE_HEAD; | |
1030 | ||
1031 | READ_BUF(24); | |
542d1ab3 | 1032 | p = xdr_decode_hyper(p, &readdir->rd_cookie); |
1da177e4 | 1033 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); |
06553991 BF |
1034 | readdir->rd_dircount = be32_to_cpup(p++); |
1035 | readdir->rd_maxcount = be32_to_cpup(p++); | |
1da177e4 LT |
1036 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) |
1037 | goto out; | |
1038 | ||
1039 | DECODE_TAIL; | |
1040 | } | |
1041 | ||
b37ad28b | 1042 | static __be32 |
1da177e4 LT |
1043 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
1044 | { | |
1045 | DECODE_HEAD; | |
1046 | ||
1047 | READ_BUF(4); | |
06553991 | 1048 | remove->rm_namelen = be32_to_cpup(p++); |
1da177e4 LT |
1049 | READ_BUF(remove->rm_namelen); |
1050 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
a36b1725 | 1051 | if ((status = check_filename(remove->rm_name, remove->rm_namelen))) |
1da177e4 LT |
1052 | return status; |
1053 | ||
1054 | DECODE_TAIL; | |
1055 | } | |
1056 | ||
b37ad28b | 1057 | static __be32 |
1da177e4 LT |
1058 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
1059 | { | |
1060 | DECODE_HEAD; | |
1061 | ||
1062 | READ_BUF(4); | |
06553991 | 1063 | rename->rn_snamelen = be32_to_cpup(p++); |
1da177e4 LT |
1064 | READ_BUF(rename->rn_snamelen + 4); |
1065 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); | |
06553991 | 1066 | rename->rn_tnamelen = be32_to_cpup(p++); |
1da177e4 LT |
1067 | READ_BUF(rename->rn_tnamelen); |
1068 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
a36b1725 | 1069 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen))) |
1da177e4 | 1070 | return status; |
a36b1725 | 1071 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen))) |
1da177e4 LT |
1072 | return status; |
1073 | ||
1074 | DECODE_TAIL; | |
1075 | } | |
1076 | ||
b37ad28b | 1077 | static __be32 |
1da177e4 LT |
1078 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
1079 | { | |
1080 | DECODE_HEAD; | |
1081 | ||
e1a90ebd AS |
1082 | if (argp->minorversion >= 1) |
1083 | return nfserr_notsupp; | |
1084 | ||
1da177e4 LT |
1085 | READ_BUF(sizeof(clientid_t)); |
1086 | COPYMEM(clientid, sizeof(clientid_t)); | |
1087 | ||
1088 | DECODE_TAIL; | |
1089 | } | |
1090 | ||
dcb488a3 AA |
1091 | static __be32 |
1092 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
1093 | struct nfsd4_secinfo *secinfo) | |
1094 | { | |
1095 | DECODE_HEAD; | |
1096 | ||
1097 | READ_BUF(4); | |
06553991 | 1098 | secinfo->si_namelen = be32_to_cpup(p++); |
dcb488a3 AA |
1099 | READ_BUF(secinfo->si_namelen); |
1100 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
a36b1725 | 1101 | status = check_filename(secinfo->si_name, secinfo->si_namelen); |
dcb488a3 AA |
1102 | if (status) |
1103 | return status; | |
1104 | DECODE_TAIL; | |
1105 | } | |
1106 | ||
04f4ad16 BF |
1107 | static __be32 |
1108 | nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, | |
1109 | struct nfsd4_secinfo_no_name *sin) | |
1110 | { | |
1111 | DECODE_HEAD; | |
1112 | ||
1113 | READ_BUF(4); | |
06553991 | 1114 | sin->sin_style = be32_to_cpup(p++); |
04f4ad16 BF |
1115 | DECODE_TAIL; |
1116 | } | |
1117 | ||
b37ad28b | 1118 | static __be32 |
1da177e4 LT |
1119 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
1120 | { | |
e31a1b66 | 1121 | __be32 status; |
1da177e4 | 1122 | |
e31a1b66 BH |
1123 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
1124 | if (status) | |
1125 | return status; | |
3c8e0316 | 1126 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
18032ca0 | 1127 | &setattr->sa_acl, &setattr->sa_label); |
1da177e4 LT |
1128 | } |
1129 | ||
b37ad28b | 1130 | static __be32 |
1da177e4 LT |
1131 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
1132 | { | |
1133 | DECODE_HEAD; | |
1134 | ||
e1a90ebd AS |
1135 | if (argp->minorversion >= 1) |
1136 | return nfserr_notsupp; | |
1137 | ||
ab4684d1 CL |
1138 | READ_BUF(NFS4_VERIFIER_SIZE); |
1139 | COPYMEM(setclientid->se_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 1140 | |
a084daf5 BF |
1141 | status = nfsd4_decode_opaque(argp, &setclientid->se_name); |
1142 | if (status) | |
1143 | return nfserr_bad_xdr; | |
1144 | READ_BUF(8); | |
06553991 BF |
1145 | setclientid->se_callback_prog = be32_to_cpup(p++); |
1146 | setclientid->se_callback_netid_len = be32_to_cpup(p++); | |
1da177e4 LT |
1147 | |
1148 | READ_BUF(setclientid->se_callback_netid_len + 4); | |
1149 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); | |
06553991 | 1150 | setclientid->se_callback_addr_len = be32_to_cpup(p++); |
1da177e4 LT |
1151 | |
1152 | READ_BUF(setclientid->se_callback_addr_len + 4); | |
1153 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); | |
06553991 | 1154 | setclientid->se_callback_ident = be32_to_cpup(p++); |
1da177e4 LT |
1155 | |
1156 | DECODE_TAIL; | |
1157 | } | |
1158 | ||
b37ad28b | 1159 | static __be32 |
1da177e4 LT |
1160 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
1161 | { | |
1162 | DECODE_HEAD; | |
1163 | ||
e1a90ebd AS |
1164 | if (argp->minorversion >= 1) |
1165 | return nfserr_notsupp; | |
1166 | ||
ab4684d1 | 1167 | READ_BUF(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 1168 | COPYMEM(&scd_c->sc_clientid, 8); |
ab4684d1 | 1169 | COPYMEM(&scd_c->sc_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
1170 | |
1171 | DECODE_TAIL; | |
1172 | } | |
1173 | ||
1174 | /* Also used for NVERIFY */ | |
b37ad28b | 1175 | static __be32 |
1da177e4 LT |
1176 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
1177 | { | |
1da177e4 LT |
1178 | DECODE_HEAD; |
1179 | ||
1180 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
1181 | goto out; | |
1182 | ||
1183 | /* For convenience's sake, we compare raw xdr'd attributes in | |
e5f95703 BF |
1184 | * nfsd4_proc_verify */ |
1185 | ||
1da177e4 | 1186 | READ_BUF(4); |
06553991 | 1187 | verify->ve_attrlen = be32_to_cpup(p++); |
1da177e4 LT |
1188 | READ_BUF(verify->ve_attrlen); |
1189 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
1190 | ||
1191 | DECODE_TAIL; | |
1192 | } | |
1193 | ||
b37ad28b | 1194 | static __be32 |
1da177e4 LT |
1195 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
1196 | { | |
1197 | int avail; | |
1da177e4 LT |
1198 | int len; |
1199 | DECODE_HEAD; | |
1200 | ||
e31a1b66 BH |
1201 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
1202 | if (status) | |
1203 | return status; | |
1204 | READ_BUF(16); | |
542d1ab3 | 1205 | p = xdr_decode_hyper(p, &write->wr_offset); |
06553991 | 1206 | write->wr_stable_how = be32_to_cpup(p++); |
1da177e4 LT |
1207 | if (write->wr_stable_how > 2) |
1208 | goto xdr_error; | |
06553991 | 1209 | write->wr_buflen = be32_to_cpup(p++); |
1da177e4 LT |
1210 | |
1211 | /* Sorry .. no magic macros for this.. * | |
1212 | * READ_BUF(write->wr_buflen); | |
1213 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
1214 | */ | |
1215 | avail = (char*)argp->end - (char*)argp->p; | |
1216 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
1217 | dprintk("NFSD: xdr error (%s:%d)\n", |
1218 | __FILE__, __LINE__); | |
1da177e4 LT |
1219 | goto xdr_error; |
1220 | } | |
70cc7f75 BF |
1221 | write->wr_head.iov_base = p; |
1222 | write->wr_head.iov_len = avail; | |
70cc7f75 | 1223 | write->wr_pagelist = argp->pagelist; |
5a80a54d BF |
1224 | |
1225 | len = XDR_QUADLEN(write->wr_buflen) << 2; | |
1226 | if (len >= avail) { | |
1227 | int pages; | |
1228 | ||
1229 | len -= avail; | |
1230 | ||
1231 | pages = len >> PAGE_SHIFT; | |
1232 | argp->pagelist += pages; | |
1233 | argp->pagelen -= pages * PAGE_SIZE; | |
1234 | len -= pages * PAGE_SIZE; | |
1235 | ||
1236 | argp->p = (__be32 *)page_address(argp->pagelist[0]); | |
365da4ad | 1237 | argp->pagelist++; |
5a80a54d | 1238 | argp->end = argp->p + XDR_QUADLEN(PAGE_SIZE); |
1da177e4 | 1239 | } |
5a80a54d | 1240 | argp->p += XDR_QUADLEN(len); |
1da177e4 LT |
1241 | |
1242 | DECODE_TAIL; | |
1243 | } | |
1244 | ||
b37ad28b | 1245 | static __be32 |
1da177e4 LT |
1246 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
1247 | { | |
1248 | DECODE_HEAD; | |
1249 | ||
e1a90ebd AS |
1250 | if (argp->minorversion >= 1) |
1251 | return nfserr_notsupp; | |
1252 | ||
1da177e4 LT |
1253 | READ_BUF(12); |
1254 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
06553991 | 1255 | rlockowner->rl_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
1256 | READ_BUF(rlockowner->rl_owner.len); |
1257 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
1258 | ||
60adfc50 AA |
1259 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1260 | return nfserr_inval; | |
1da177e4 LT |
1261 | DECODE_TAIL; |
1262 | } | |
1263 | ||
2db134eb AA |
1264 | static __be32 |
1265 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1266 | struct nfsd4_exchange_id *exid) |
2db134eb | 1267 | { |
5afa040b | 1268 | int dummy, tmp; |
0733d213 AA |
1269 | DECODE_HEAD; |
1270 | ||
1271 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1272 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1273 | ||
a084daf5 BF |
1274 | status = nfsd4_decode_opaque(argp, &exid->clname); |
1275 | if (status) | |
1276 | return nfserr_bad_xdr; | |
0733d213 AA |
1277 | |
1278 | READ_BUF(4); | |
06553991 | 1279 | exid->flags = be32_to_cpup(p++); |
0733d213 AA |
1280 | |
1281 | /* Ignore state_protect4_a */ | |
1282 | READ_BUF(4); | |
06553991 | 1283 | exid->spa_how = be32_to_cpup(p++); |
0733d213 AA |
1284 | switch (exid->spa_how) { |
1285 | case SP4_NONE: | |
1286 | break; | |
1287 | case SP4_MACH_CRED: | |
1288 | /* spo_must_enforce */ | |
1289 | READ_BUF(4); | |
06553991 | 1290 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1291 | READ_BUF(dummy * 4); |
1292 | p += dummy; | |
1293 | ||
1294 | /* spo_must_allow */ | |
1295 | READ_BUF(4); | |
06553991 | 1296 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1297 | READ_BUF(dummy * 4); |
1298 | p += dummy; | |
1299 | break; | |
1300 | case SP4_SSV: | |
1301 | /* ssp_ops */ | |
1302 | READ_BUF(4); | |
06553991 | 1303 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1304 | READ_BUF(dummy * 4); |
1305 | p += dummy; | |
1306 | ||
1307 | READ_BUF(4); | |
06553991 | 1308 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1309 | READ_BUF(dummy * 4); |
1310 | p += dummy; | |
1311 | ||
1312 | /* ssp_hash_algs<> */ | |
1313 | READ_BUF(4); | |
06553991 | 1314 | tmp = be32_to_cpup(p++); |
5afa040b MJ |
1315 | while (tmp--) { |
1316 | READ_BUF(4); | |
06553991 | 1317 | dummy = be32_to_cpup(p++); |
5afa040b MJ |
1318 | READ_BUF(dummy); |
1319 | p += XDR_QUADLEN(dummy); | |
1320 | } | |
0733d213 AA |
1321 | |
1322 | /* ssp_encr_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_window and ssp_num_gss_handles */ | |
1333 | READ_BUF(8); | |
06553991 BF |
1334 | dummy = be32_to_cpup(p++); |
1335 | dummy = be32_to_cpup(p++); | |
0733d213 AA |
1336 | break; |
1337 | default: | |
1338 | goto xdr_error; | |
1339 | } | |
1340 | ||
1341 | /* Ignore Implementation ID */ | |
1342 | READ_BUF(4); /* nfs_impl_id4 array length */ | |
06553991 | 1343 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1344 | |
1345 | if (dummy > 1) | |
1346 | goto xdr_error; | |
1347 | ||
1348 | if (dummy == 1) { | |
1349 | /* nii_domain */ | |
1350 | READ_BUF(4); | |
06553991 | 1351 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1352 | READ_BUF(dummy); |
1353 | p += XDR_QUADLEN(dummy); | |
1354 | ||
1355 | /* nii_name */ | |
1356 | READ_BUF(4); | |
06553991 | 1357 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1358 | READ_BUF(dummy); |
1359 | p += XDR_QUADLEN(dummy); | |
1360 | ||
1361 | /* nii_date */ | |
1362 | READ_BUF(12); | |
1363 | p += 3; | |
1364 | } | |
1365 | DECODE_TAIL; | |
2db134eb AA |
1366 | } |
1367 | ||
1368 | static __be32 | |
1369 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1370 | struct nfsd4_create_session *sess) | |
1371 | { | |
ec6b5d7b | 1372 | DECODE_HEAD; |
ec6b5d7b | 1373 | u32 dummy; |
ec6b5d7b AA |
1374 | |
1375 | READ_BUF(16); | |
1376 | COPYMEM(&sess->clientid, 8); | |
06553991 BF |
1377 | sess->seqid = be32_to_cpup(p++); |
1378 | sess->flags = be32_to_cpup(p++); | |
ec6b5d7b AA |
1379 | |
1380 | /* Fore channel attrs */ | |
1381 | READ_BUF(28); | |
06553991 BF |
1382 | dummy = be32_to_cpup(p++); /* headerpadsz is always 0 */ |
1383 | sess->fore_channel.maxreq_sz = be32_to_cpup(p++); | |
1384 | sess->fore_channel.maxresp_sz = be32_to_cpup(p++); | |
1385 | sess->fore_channel.maxresp_cached = be32_to_cpup(p++); | |
1386 | sess->fore_channel.maxops = be32_to_cpup(p++); | |
1387 | sess->fore_channel.maxreqs = be32_to_cpup(p++); | |
1388 | sess->fore_channel.nr_rdma_attrs = be32_to_cpup(p++); | |
ec6b5d7b AA |
1389 | if (sess->fore_channel.nr_rdma_attrs == 1) { |
1390 | READ_BUF(4); | |
06553991 | 1391 | sess->fore_channel.rdma_attrs = be32_to_cpup(p++); |
ec6b5d7b AA |
1392 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { |
1393 | dprintk("Too many fore channel attr bitmaps!\n"); | |
1394 | goto xdr_error; | |
1395 | } | |
1396 | ||
1397 | /* Back channel attrs */ | |
1398 | READ_BUF(28); | |
06553991 BF |
1399 | dummy = be32_to_cpup(p++); /* headerpadsz is always 0 */ |
1400 | sess->back_channel.maxreq_sz = be32_to_cpup(p++); | |
1401 | sess->back_channel.maxresp_sz = be32_to_cpup(p++); | |
1402 | sess->back_channel.maxresp_cached = be32_to_cpup(p++); | |
1403 | sess->back_channel.maxops = be32_to_cpup(p++); | |
1404 | sess->back_channel.maxreqs = be32_to_cpup(p++); | |
1405 | sess->back_channel.nr_rdma_attrs = be32_to_cpup(p++); | |
ec6b5d7b AA |
1406 | if (sess->back_channel.nr_rdma_attrs == 1) { |
1407 | READ_BUF(4); | |
06553991 | 1408 | sess->back_channel.rdma_attrs = be32_to_cpup(p++); |
ec6b5d7b AA |
1409 | } else if (sess->back_channel.nr_rdma_attrs > 1) { |
1410 | dprintk("Too many back channel attr bitmaps!\n"); | |
1411 | goto xdr_error; | |
1412 | } | |
1413 | ||
acb2887e | 1414 | READ_BUF(4); |
06553991 | 1415 | sess->callback_prog = be32_to_cpup(p++); |
acb2887e | 1416 | nfsd4_decode_cb_sec(argp, &sess->cb_sec); |
ec6b5d7b | 1417 | DECODE_TAIL; |
2db134eb AA |
1418 | } |
1419 | ||
1420 | static __be32 | |
1421 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, | |
1422 | struct nfsd4_destroy_session *destroy_session) | |
1423 | { | |
e10e0cfc BH |
1424 | DECODE_HEAD; |
1425 | READ_BUF(NFS4_MAX_SESSIONID_LEN); | |
1426 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1427 | ||
1428 | DECODE_TAIL; | |
2db134eb AA |
1429 | } |
1430 | ||
e1ca12df BS |
1431 | static __be32 |
1432 | nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp, | |
1433 | struct nfsd4_free_stateid *free_stateid) | |
1434 | { | |
1435 | DECODE_HEAD; | |
1436 | ||
1437 | READ_BUF(sizeof(stateid_t)); | |
06553991 | 1438 | free_stateid->fr_stateid.si_generation = be32_to_cpup(p++); |
e1ca12df BS |
1439 | COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t)); |
1440 | ||
1441 | DECODE_TAIL; | |
1442 | } | |
1443 | ||
2db134eb AA |
1444 | static __be32 |
1445 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, | |
1446 | struct nfsd4_sequence *seq) | |
1447 | { | |
b85d4c01 BH |
1448 | DECODE_HEAD; |
1449 | ||
1450 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); | |
1451 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
06553991 BF |
1452 | seq->seqid = be32_to_cpup(p++); |
1453 | seq->slotid = be32_to_cpup(p++); | |
1454 | seq->maxslots = be32_to_cpup(p++); | |
1455 | seq->cachethis = be32_to_cpup(p++); | |
b85d4c01 BH |
1456 | |
1457 | DECODE_TAIL; | |
2db134eb AA |
1458 | } |
1459 | ||
17456804 BS |
1460 | static __be32 |
1461 | nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid) | |
1462 | { | |
17456804 | 1463 | int i; |
03cfb420 BS |
1464 | __be32 *p, status; |
1465 | struct nfsd4_test_stateid_id *stateid; | |
17456804 BS |
1466 | |
1467 | READ_BUF(4); | |
1468 | test_stateid->ts_num_ids = ntohl(*p++); | |
1469 | ||
03cfb420 | 1470 | INIT_LIST_HEAD(&test_stateid->ts_stateid_list); |
17456804 BS |
1471 | |
1472 | for (i = 0; i < test_stateid->ts_num_ids; i++) { | |
d5e23383 | 1473 | stateid = svcxdr_tmpalloc(argp, sizeof(*stateid)); |
03cfb420 | 1474 | if (!stateid) { |
afcf6792 | 1475 | status = nfserrno(-ENOMEM); |
03cfb420 BS |
1476 | goto out; |
1477 | } | |
1478 | ||
03cfb420 BS |
1479 | INIT_LIST_HEAD(&stateid->ts_id_list); |
1480 | list_add_tail(&stateid->ts_id_list, &test_stateid->ts_stateid_list); | |
1481 | ||
1482 | status = nfsd4_decode_stateid(argp, &stateid->ts_id_stateid); | |
17456804 | 1483 | if (status) |
03cfb420 | 1484 | goto out; |
17456804 BS |
1485 | } |
1486 | ||
1487 | status = 0; | |
1488 | out: | |
1489 | return status; | |
1490 | xdr_error: | |
1491 | dprintk("NFSD: xdr error (%s:%d)\n", __FILE__, __LINE__); | |
1492 | status = nfserr_bad_xdr; | |
1493 | goto out; | |
1494 | } | |
1495 | ||
345c2842 MJ |
1496 | static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_clientid *dc) |
1497 | { | |
1498 | DECODE_HEAD; | |
1499 | ||
1500 | READ_BUF(8); | |
1501 | COPYMEM(&dc->clientid, 8); | |
1502 | ||
1503 | DECODE_TAIL; | |
1504 | } | |
1505 | ||
4dc6ec00 BF |
1506 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) |
1507 | { | |
1508 | DECODE_HEAD; | |
1509 | ||
1510 | READ_BUF(4); | |
06553991 | 1511 | rc->rca_one_fs = be32_to_cpup(p++); |
4dc6ec00 BF |
1512 | |
1513 | DECODE_TAIL; | |
1514 | } | |
1515 | ||
95d871f0 AS |
1516 | static __be32 |
1517 | nfsd4_decode_fallocate(struct nfsd4_compoundargs *argp, | |
1518 | struct nfsd4_fallocate *fallocate) | |
1519 | { | |
1520 | DECODE_HEAD; | |
1521 | ||
1522 | status = nfsd4_decode_stateid(argp, &fallocate->falloc_stateid); | |
1523 | if (status) | |
1524 | return status; | |
1525 | ||
1526 | READ_BUF(16); | |
1527 | p = xdr_decode_hyper(p, &fallocate->falloc_offset); | |
1528 | xdr_decode_hyper(p, &fallocate->falloc_length); | |
1529 | ||
1530 | DECODE_TAIL; | |
1531 | } | |
1532 | ||
24bab491 AS |
1533 | static __be32 |
1534 | nfsd4_decode_seek(struct nfsd4_compoundargs *argp, struct nfsd4_seek *seek) | |
1535 | { | |
1536 | DECODE_HEAD; | |
1537 | ||
1538 | status = nfsd4_decode_stateid(argp, &seek->seek_stateid); | |
1539 | if (status) | |
1540 | return status; | |
1541 | ||
1542 | READ_BUF(8 + 4); | |
1543 | p = xdr_decode_hyper(p, &seek->seek_offset); | |
1544 | seek->seek_whence = be32_to_cpup(p); | |
1545 | ||
1546 | DECODE_TAIL; | |
1547 | } | |
1548 | ||
347e0ad9 BH |
1549 | static __be32 |
1550 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1551 | { | |
1552 | return nfs_ok; | |
1553 | } | |
1554 | ||
3c375c6f BH |
1555 | static __be32 |
1556 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1557 | { | |
1e685ec2 | 1558 | return nfserr_notsupp; |
3c375c6f BH |
1559 | } |
1560 | ||
347e0ad9 BH |
1561 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1562 | ||
1563 | static nfsd4_dec nfsd4_dec_ops[] = { | |
ad1060c8 BF |
1564 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1565 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1566 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1567 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1568 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1569 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1570 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1571 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1572 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1573 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1574 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1575 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1576 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1577 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1578 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1579 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1580 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1581 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1582 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1583 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
e1a90ebd | 1584 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_putpubfh, |
ad1060c8 BF |
1585 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1586 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1587 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1588 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1589 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1590 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1591 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1592 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1593 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1594 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1595 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1596 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1597 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1598 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1599 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1600 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
2db134eb AA |
1601 | |
1602 | /* new operations for NFSv4.1 */ | |
cb73a9f4 | 1603 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_backchannel_ctl, |
1d1bc8f2 | 1604 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
9064caae RD |
1605 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
1606 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
1607 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
e1ca12df | 1608 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, |
9064caae RD |
1609 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
1610 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1611 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1612 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1613 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1614 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
04f4ad16 | 1615 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
9064caae RD |
1616 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
1617 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
17456804 | 1618 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid, |
9064caae | 1619 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
345c2842 | 1620 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, |
4dc6ec00 | 1621 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
87a15a80 AS |
1622 | |
1623 | /* new operations for NFSv4.2 */ | |
95d871f0 | 1624 | [OP_ALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate, |
87a15a80 AS |
1625 | [OP_COPY] = (nfsd4_dec)nfsd4_decode_notsupp, |
1626 | [OP_COPY_NOTIFY] = (nfsd4_dec)nfsd4_decode_notsupp, | |
b0cb9085 | 1627 | [OP_DEALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate, |
87a15a80 AS |
1628 | [OP_IO_ADVISE] = (nfsd4_dec)nfsd4_decode_notsupp, |
1629 | [OP_LAYOUTERROR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1630 | [OP_LAYOUTSTATS] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1631 | [OP_OFFLOAD_CANCEL] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1632 | [OP_OFFLOAD_STATUS] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1633 | [OP_READ_PLUS] = (nfsd4_dec)nfsd4_decode_notsupp, | |
24bab491 | 1634 | [OP_SEEK] = (nfsd4_dec)nfsd4_decode_seek, |
87a15a80 | 1635 | [OP_WRITE_SAME] = (nfsd4_dec)nfsd4_decode_notsupp, |
2db134eb AA |
1636 | }; |
1637 | ||
e1a90ebd AS |
1638 | static inline bool |
1639 | nfsd4_opnum_in_range(struct nfsd4_compoundargs *argp, struct nfsd4_op *op) | |
1640 | { | |
8217d146 | 1641 | if (op->opnum < FIRST_NFS4_OP) |
e1a90ebd | 1642 | return false; |
8217d146 | 1643 | else if (argp->minorversion == 0 && op->opnum > LAST_NFS40_OP) |
e1a90ebd | 1644 | return false; |
8217d146 AS |
1645 | else if (argp->minorversion == 1 && op->opnum > LAST_NFS41_OP) |
1646 | return false; | |
1647 | else if (argp->minorversion == 2 && op->opnum > LAST_NFS42_OP) | |
e1a90ebd AS |
1648 | return false; |
1649 | return true; | |
1650 | } | |
f2feb96b | 1651 | |
b37ad28b | 1652 | static __be32 |
1da177e4 LT |
1653 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1654 | { | |
1655 | DECODE_HEAD; | |
1656 | struct nfsd4_op *op; | |
1091006c | 1657 | bool cachethis = false; |
a5cddc88 BF |
1658 | int auth_slack= argp->rqstp->rq_auth_slack; |
1659 | int max_reply = auth_slack + 8; /* opcnt, status */ | |
b0e35fda BF |
1660 | int readcount = 0; |
1661 | int readbytes = 0; | |
1da177e4 LT |
1662 | int i; |
1663 | ||
1da177e4 | 1664 | READ_BUF(4); |
06553991 | 1665 | argp->taglen = be32_to_cpup(p++); |
1da177e4 LT |
1666 | READ_BUF(argp->taglen + 8); |
1667 | SAVEMEM(argp->tag, argp->taglen); | |
06553991 BF |
1668 | argp->minorversion = be32_to_cpup(p++); |
1669 | argp->opcnt = be32_to_cpup(p++); | |
4f0cefbf | 1670 | max_reply += 4 + (XDR_QUADLEN(argp->taglen) << 2); |
1da177e4 LT |
1671 | |
1672 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1673 | goto xdr_error; | |
1674 | if (argp->opcnt > 100) | |
1675 | goto xdr_error; | |
1676 | ||
e8c96f8c | 1677 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
5d6031ca | 1678 | argp->ops = kzalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1da177e4 LT |
1679 | if (!argp->ops) { |
1680 | argp->ops = argp->iops; | |
817cb9d4 | 1681 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1682 | goto xdr_error; |
1683 | } | |
1684 | } | |
1685 | ||
e1a90ebd | 1686 | if (argp->minorversion > NFSD_SUPPORTED_MINOR_VERSION) |
30cff1ff BH |
1687 | argp->opcnt = 0; |
1688 | ||
1da177e4 LT |
1689 | for (i = 0; i < argp->opcnt; i++) { |
1690 | op = &argp->ops[i]; | |
1691 | op->replay = NULL; | |
1692 | ||
8a61b18c | 1693 | READ_BUF(4); |
06553991 | 1694 | op->opnum = be32_to_cpup(p++); |
1da177e4 | 1695 | |
e1a90ebd AS |
1696 | if (nfsd4_opnum_in_range(argp, op)) |
1697 | op->status = nfsd4_dec_ops[op->opnum](argp, &op->u); | |
347e0ad9 | 1698 | else { |
1da177e4 LT |
1699 | op->opnum = OP_ILLEGAL; |
1700 | op->status = nfserr_op_illegal; | |
1da177e4 | 1701 | } |
1091006c BF |
1702 | /* |
1703 | * We'll try to cache the result in the DRC if any one | |
1704 | * op in the compound wants to be cached: | |
1705 | */ | |
1706 | cachethis |= nfsd4_cache_this_op(op); | |
6ff40dec | 1707 | |
b0e35fda BF |
1708 | if (op->opnum == OP_READ) { |
1709 | readcount++; | |
1710 | readbytes += nfsd4_max_reply(argp->rqstp, op); | |
1711 | } else | |
1712 | max_reply += nfsd4_max_reply(argp->rqstp, op); | |
f7b43d0c BF |
1713 | /* |
1714 | * OP_LOCK may return a conflicting lock. (Special case | |
1715 | * because it will just skip encoding this if it runs | |
1716 | * out of xdr buffer space, and it is the only operation | |
1717 | * that behaves this way.) | |
1718 | */ | |
1719 | if (op->opnum == OP_LOCK) | |
1720 | max_reply += NFS4_OPAQUE_LIMIT; | |
e372ba60 BF |
1721 | |
1722 | if (op->status) { | |
1723 | argp->opcnt = i+1; | |
1724 | break; | |
1725 | } | |
1da177e4 | 1726 | } |
1091006c BF |
1727 | /* Sessions make the DRC unnecessary: */ |
1728 | if (argp->minorversion) | |
1729 | cachethis = false; | |
b0e35fda | 1730 | svc_reserve(argp->rqstp, max_reply + readbytes); |
1091006c | 1731 | argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; |
1da177e4 | 1732 | |
a5cddc88 | 1733 | if (readcount > 1 || max_reply > PAGE_SIZE - auth_slack) |
779fb0f3 | 1734 | clear_bit(RQ_SPLICE_OK, &argp->rqstp->rq_flags); |
b0e35fda | 1735 | |
1da177e4 LT |
1736 | DECODE_TAIL; |
1737 | } | |
1da177e4 | 1738 | |
d05d5744 | 1739 | static __be32 *encode_change(__be32 *p, struct kstat *stat, struct inode *inode) |
c654b8a9 BF |
1740 | { |
1741 | if (IS_I_VERSION(inode)) { | |
d05d5744 | 1742 | p = xdr_encode_hyper(p, inode->i_version); |
c654b8a9 | 1743 | } else { |
d05d5744 BF |
1744 | *p++ = cpu_to_be32(stat->ctime.tv_sec); |
1745 | *p++ = cpu_to_be32(stat->ctime.tv_nsec); | |
c654b8a9 | 1746 | } |
d05d5744 | 1747 | return p; |
c654b8a9 BF |
1748 | } |
1749 | ||
d05d5744 | 1750 | static __be32 *encode_cinfo(__be32 *p, struct nfsd4_change_info *c) |
c654b8a9 | 1751 | { |
d05d5744 | 1752 | *p++ = cpu_to_be32(c->atomic); |
c654b8a9 | 1753 | if (c->change_supported) { |
d05d5744 BF |
1754 | p = xdr_encode_hyper(p, c->before_change); |
1755 | p = xdr_encode_hyper(p, c->after_change); | |
c654b8a9 | 1756 | } else { |
d05d5744 BF |
1757 | *p++ = cpu_to_be32(c->before_ctime_sec); |
1758 | *p++ = cpu_to_be32(c->before_ctime_nsec); | |
1759 | *p++ = cpu_to_be32(c->after_ctime_sec); | |
1760 | *p++ = cpu_to_be32(c->after_ctime_nsec); | |
c654b8a9 | 1761 | } |
d05d5744 | 1762 | return p; |
c654b8a9 | 1763 | } |
1da177e4 | 1764 | |
81c3f413 | 1765 | /* Encode as an array of strings the string given with components |
e7a0444a | 1766 | * separated @sep, escaped with esc_enter and esc_exit. |
81c3f413 | 1767 | */ |
ddd1ea56 BF |
1768 | static __be32 nfsd4_encode_components_esc(struct xdr_stream *xdr, char sep, |
1769 | char *components, char esc_enter, | |
1770 | char esc_exit) | |
81c3f413 | 1771 | { |
ddd1ea56 | 1772 | __be32 *p; |
082d4bd7 BF |
1773 | __be32 pathlen; |
1774 | int pathlen_offset; | |
81c3f413 | 1775 | int strlen, count=0; |
e7a0444a | 1776 | char *str, *end, *next; |
81c3f413 BF |
1777 | |
1778 | dprintk("nfsd4_encode_components(%s)\n", components); | |
082d4bd7 BF |
1779 | |
1780 | pathlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
1781 | p = xdr_reserve_space(xdr, 4); |
1782 | if (!p) | |
81c3f413 | 1783 | return nfserr_resource; |
082d4bd7 BF |
1784 | p++; /* We will fill this in with @count later */ |
1785 | ||
81c3f413 BF |
1786 | end = str = components; |
1787 | while (*end) { | |
e7a0444a WAA |
1788 | bool found_esc = false; |
1789 | ||
1790 | /* try to parse as esc_start, ..., esc_end, sep */ | |
1791 | if (*str == esc_enter) { | |
1792 | for (; *end && (*end != esc_exit); end++) | |
1793 | /* find esc_exit or end of string */; | |
1794 | next = end + 1; | |
1795 | if (*end && (!*next || *next == sep)) { | |
1796 | str++; | |
1797 | found_esc = true; | |
1798 | } | |
1799 | } | |
1800 | ||
1801 | if (!found_esc) | |
1802 | for (; *end && (*end != sep); end++) | |
1803 | /* find sep or end of string */; | |
1804 | ||
81c3f413 BF |
1805 | strlen = end - str; |
1806 | if (strlen) { | |
ddd1ea56 BF |
1807 | p = xdr_reserve_space(xdr, strlen + 4); |
1808 | if (!p) | |
81c3f413 | 1809 | return nfserr_resource; |
0c0c267b | 1810 | p = xdr_encode_opaque(p, str, strlen); |
81c3f413 BF |
1811 | count++; |
1812 | } | |
1813 | else | |
1814 | end++; | |
1815 | str = end; | |
1816 | } | |
082d4bd7 BF |
1817 | pathlen = htonl(xdr->buf->len - pathlen_offset); |
1818 | write_bytes_to_xdr_buf(xdr->buf, pathlen_offset, &pathlen, 4); | |
81c3f413 BF |
1819 | return 0; |
1820 | } | |
1821 | ||
e7a0444a WAA |
1822 | /* Encode as an array of strings the string given with components |
1823 | * separated @sep. | |
1824 | */ | |
ddd1ea56 BF |
1825 | static __be32 nfsd4_encode_components(struct xdr_stream *xdr, char sep, |
1826 | char *components) | |
e7a0444a | 1827 | { |
ddd1ea56 | 1828 | return nfsd4_encode_components_esc(xdr, sep, components, 0, 0); |
e7a0444a WAA |
1829 | } |
1830 | ||
81c3f413 BF |
1831 | /* |
1832 | * encode a location element of a fs_locations structure | |
1833 | */ | |
ddd1ea56 BF |
1834 | static __be32 nfsd4_encode_fs_location4(struct xdr_stream *xdr, |
1835 | struct nfsd4_fs_location *location) | |
81c3f413 | 1836 | { |
b37ad28b | 1837 | __be32 status; |
81c3f413 | 1838 | |
ddd1ea56 | 1839 | status = nfsd4_encode_components_esc(xdr, ':', location->hosts, |
e7a0444a | 1840 | '[', ']'); |
81c3f413 BF |
1841 | if (status) |
1842 | return status; | |
ddd1ea56 | 1843 | status = nfsd4_encode_components(xdr, '/', location->path); |
81c3f413 BF |
1844 | if (status) |
1845 | return status; | |
81c3f413 BF |
1846 | return 0; |
1847 | } | |
1848 | ||
1849 | /* | |
ed748aac | 1850 | * Encode a path in RFC3530 'pathname4' format |
81c3f413 | 1851 | */ |
ddd1ea56 BF |
1852 | static __be32 nfsd4_encode_path(struct xdr_stream *xdr, |
1853 | const struct path *root, | |
1854 | const struct path *path) | |
81c3f413 | 1855 | { |
301f0268 | 1856 | struct path cur = *path; |
ddd1ea56 | 1857 | __be32 *p; |
ed748aac TM |
1858 | struct dentry **components = NULL; |
1859 | unsigned int ncomponents = 0; | |
1860 | __be32 err = nfserr_jukebox; | |
81c3f413 | 1861 | |
ed748aac | 1862 | dprintk("nfsd4_encode_components("); |
81c3f413 | 1863 | |
ed748aac TM |
1864 | path_get(&cur); |
1865 | /* First walk the path up to the nfsd root, and store the | |
1866 | * dentries/path components in an array. | |
1867 | */ | |
1868 | for (;;) { | |
1869 | if (cur.dentry == root->dentry && cur.mnt == root->mnt) | |
1870 | break; | |
1871 | if (cur.dentry == cur.mnt->mnt_root) { | |
1872 | if (follow_up(&cur)) | |
1873 | continue; | |
1874 | goto out_free; | |
1875 | } | |
1876 | if ((ncomponents & 15) == 0) { | |
1877 | struct dentry **new; | |
1878 | new = krealloc(components, | |
1879 | sizeof(*new) * (ncomponents + 16), | |
1880 | GFP_KERNEL); | |
1881 | if (!new) | |
1882 | goto out_free; | |
1883 | components = new; | |
1884 | } | |
1885 | components[ncomponents++] = cur.dentry; | |
1886 | cur.dentry = dget_parent(cur.dentry); | |
1887 | } | |
ddd1ea56 BF |
1888 | err = nfserr_resource; |
1889 | p = xdr_reserve_space(xdr, 4); | |
1890 | if (!p) | |
ed748aac | 1891 | goto out_free; |
c373b0a4 | 1892 | *p++ = cpu_to_be32(ncomponents); |
ed748aac TM |
1893 | |
1894 | while (ncomponents) { | |
1895 | struct dentry *dentry = components[ncomponents - 1]; | |
301f0268 | 1896 | unsigned int len; |
ed748aac | 1897 | |
301f0268 AV |
1898 | spin_lock(&dentry->d_lock); |
1899 | len = dentry->d_name.len; | |
ddd1ea56 BF |
1900 | p = xdr_reserve_space(xdr, len + 4); |
1901 | if (!p) { | |
301f0268 | 1902 | spin_unlock(&dentry->d_lock); |
ed748aac | 1903 | goto out_free; |
301f0268 | 1904 | } |
0c0c267b | 1905 | p = xdr_encode_opaque(p, dentry->d_name.name, len); |
ed748aac | 1906 | dprintk("/%s", dentry->d_name.name); |
301f0268 | 1907 | spin_unlock(&dentry->d_lock); |
ed748aac TM |
1908 | dput(dentry); |
1909 | ncomponents--; | |
81c3f413 | 1910 | } |
ed748aac | 1911 | |
ed748aac TM |
1912 | err = 0; |
1913 | out_free: | |
1914 | dprintk(")\n"); | |
1915 | while (ncomponents) | |
1916 | dput(components[--ncomponents]); | |
1917 | kfree(components); | |
1918 | path_put(&cur); | |
1919 | return err; | |
1920 | } | |
1921 | ||
ddd1ea56 BF |
1922 | static __be32 nfsd4_encode_fsloc_fsroot(struct xdr_stream *xdr, |
1923 | struct svc_rqst *rqstp, const struct path *path) | |
ed748aac TM |
1924 | { |
1925 | struct svc_export *exp_ps; | |
1926 | __be32 res; | |
1927 | ||
1928 | exp_ps = rqst_find_fsidzero_export(rqstp); | |
1929 | if (IS_ERR(exp_ps)) | |
1930 | return nfserrno(PTR_ERR(exp_ps)); | |
ddd1ea56 | 1931 | res = nfsd4_encode_path(xdr, &exp_ps->ex_path, path); |
ed748aac TM |
1932 | exp_put(exp_ps); |
1933 | return res; | |
81c3f413 BF |
1934 | } |
1935 | ||
1936 | /* | |
1937 | * encode a fs_locations structure | |
1938 | */ | |
ddd1ea56 BF |
1939 | static __be32 nfsd4_encode_fs_locations(struct xdr_stream *xdr, |
1940 | struct svc_rqst *rqstp, struct svc_export *exp) | |
81c3f413 | 1941 | { |
b37ad28b | 1942 | __be32 status; |
cc45f017 | 1943 | int i; |
ddd1ea56 | 1944 | __be32 *p; |
81c3f413 | 1945 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
81c3f413 | 1946 | |
ddd1ea56 | 1947 | status = nfsd4_encode_fsloc_fsroot(xdr, rqstp, &exp->ex_path); |
81c3f413 BF |
1948 | if (status) |
1949 | return status; | |
ddd1ea56 BF |
1950 | p = xdr_reserve_space(xdr, 4); |
1951 | if (!p) | |
81c3f413 | 1952 | return nfserr_resource; |
c373b0a4 | 1953 | *p++ = cpu_to_be32(fslocs->locations_count); |
81c3f413 | 1954 | for (i=0; i<fslocs->locations_count; i++) { |
ddd1ea56 | 1955 | status = nfsd4_encode_fs_location4(xdr, &fslocs->locations[i]); |
81c3f413 BF |
1956 | if (status) |
1957 | return status; | |
1958 | } | |
81c3f413 BF |
1959 | return 0; |
1960 | } | |
1da177e4 | 1961 | |
3d2544b1 BF |
1962 | static u32 nfs4_file_type(umode_t mode) |
1963 | { | |
1964 | switch (mode & S_IFMT) { | |
1965 | case S_IFIFO: return NF4FIFO; | |
1966 | case S_IFCHR: return NF4CHR; | |
1967 | case S_IFDIR: return NF4DIR; | |
1968 | case S_IFBLK: return NF4BLK; | |
1969 | case S_IFLNK: return NF4LNK; | |
1970 | case S_IFREG: return NF4REG; | |
1971 | case S_IFSOCK: return NF4SOCK; | |
1972 | default: return NF4BAD; | |
1973 | }; | |
1974 | } | |
1da177e4 | 1975 | |
b37ad28b | 1976 | static inline __be32 |
ddd1ea56 BF |
1977 | nfsd4_encode_aclname(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
1978 | struct nfs4_ace *ace) | |
1da177e4 | 1979 | { |
3554116d | 1980 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ddd1ea56 | 1981 | return nfs4_acl_write_who(xdr, ace->whotype); |
3554116d | 1982 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
ddd1ea56 | 1983 | return nfsd4_encode_group(xdr, rqstp, ace->who_gid); |
3554116d | 1984 | else |
ddd1ea56 | 1985 | return nfsd4_encode_user(xdr, rqstp, ace->who_uid); |
1da177e4 LT |
1986 | } |
1987 | ||
42ca0993 BF |
1988 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
1989 | FATTR4_WORD0_RDATTR_ERROR) | |
1990 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
1991 | ||
18032ca0 DQ |
1992 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
1993 | static inline __be32 | |
ddd1ea56 BF |
1994 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
1995 | void *context, int len) | |
18032ca0 | 1996 | { |
ddd1ea56 | 1997 | __be32 *p; |
18032ca0 | 1998 | |
ddd1ea56 BF |
1999 | p = xdr_reserve_space(xdr, len + 4 + 4 + 4); |
2000 | if (!p) | |
18032ca0 DQ |
2001 | return nfserr_resource; |
2002 | ||
2003 | /* | |
2004 | * For now we use a 0 here to indicate the null translation; in | |
2005 | * the future we may place a call to translation code here. | |
2006 | */ | |
c373b0a4 BF |
2007 | *p++ = cpu_to_be32(0); /* lfs */ |
2008 | *p++ = cpu_to_be32(0); /* pi */ | |
18032ca0 | 2009 | p = xdr_encode_opaque(p, context, len); |
18032ca0 DQ |
2010 | return 0; |
2011 | } | |
2012 | #else | |
2013 | static inline __be32 | |
ddd1ea56 BF |
2014 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2015 | void *context, int len) | |
18032ca0 DQ |
2016 | { return 0; } |
2017 | #endif | |
2018 | ||
b37ad28b | 2019 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
42ca0993 BF |
2020 | { |
2021 | /* As per referral draft: */ | |
2022 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
2023 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
2024 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
2025 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
2026 | *rdattr_err = NFSERR_MOVED; | |
2027 | else | |
2028 | return nfserr_moved; | |
2029 | } | |
2030 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
2031 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
2032 | return 0; | |
2033 | } | |
1da177e4 | 2034 | |
ae7095a7 BF |
2035 | |
2036 | static int get_parent_attributes(struct svc_export *exp, struct kstat *stat) | |
2037 | { | |
2038 | struct path path = exp->ex_path; | |
2039 | int err; | |
2040 | ||
2041 | path_get(&path); | |
2042 | while (follow_up(&path)) { | |
2043 | if (path.dentry != path.mnt->mnt_root) | |
2044 | break; | |
2045 | } | |
3dadecce | 2046 | err = vfs_getattr(&path, stat); |
ae7095a7 BF |
2047 | path_put(&path); |
2048 | return err; | |
2049 | } | |
2050 | ||
1da177e4 LT |
2051 | /* |
2052 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
2053 | * ourselves. | |
1da177e4 | 2054 | */ |
da2ebce6 | 2055 | static __be32 |
d5184658 BF |
2056 | nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp, |
2057 | struct svc_export *exp, | |
2058 | struct dentry *dentry, u32 *bmval, | |
406a7ea9 | 2059 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
2060 | { |
2061 | u32 bmval0 = bmval[0]; | |
2062 | u32 bmval1 = bmval[1]; | |
7e705706 | 2063 | u32 bmval2 = bmval[2]; |
1da177e4 | 2064 | struct kstat stat; |
d50e6136 | 2065 | struct svc_fh *tempfh = NULL; |
1da177e4 | 2066 | struct kstatfs statfs; |
ddd1ea56 | 2067 | __be32 *p; |
1fcea5b2 | 2068 | int starting_len = xdr->buf->len; |
082d4bd7 BF |
2069 | int attrlen_offset; |
2070 | __be32 attrlen; | |
1da177e4 LT |
2071 | u32 dummy; |
2072 | u64 dummy64; | |
42ca0993 | 2073 | u32 rdattr_err = 0; |
b37ad28b | 2074 | __be32 status; |
b8dd7b9a | 2075 | int err; |
1da177e4 LT |
2076 | int aclsupport = 0; |
2077 | struct nfs4_acl *acl = NULL; | |
18032ca0 DQ |
2078 | void *context = NULL; |
2079 | int contextlen; | |
2080 | bool contextsupport = false; | |
7e705706 AA |
2081 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
2082 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
2083 | struct path path = { |
2084 | .mnt = exp->ex_path.mnt, | |
2085 | .dentry = dentry, | |
2086 | }; | |
3d733711 | 2087 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
1da177e4 LT |
2088 | |
2089 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
7e705706 AA |
2090 | BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); |
2091 | BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); | |
2092 | BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); | |
1da177e4 | 2093 | |
42ca0993 | 2094 | if (exp->ex_fslocs.migrated) { |
7e705706 | 2095 | BUG_ON(bmval[2]); |
42ca0993 BF |
2096 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); |
2097 | if (status) | |
2098 | goto out; | |
2099 | } | |
2100 | ||
3dadecce | 2101 | err = vfs_getattr(&path, &stat); |
b8dd7b9a | 2102 | if (err) |
1da177e4 | 2103 | goto out_nfserr; |
12337901 CH |
2104 | if ((bmval0 & (FATTR4_WORD0_FILES_AVAIL | FATTR4_WORD0_FILES_FREE | |
2105 | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
2106 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
2107 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 2108 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 2109 | if (err) |
1da177e4 LT |
2110 | goto out_nfserr; |
2111 | } | |
2112 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
d50e6136 BF |
2113 | tempfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); |
2114 | status = nfserr_jukebox; | |
2115 | if (!tempfh) | |
2116 | goto out; | |
2117 | fh_init(tempfh, NFS4_FHSIZE); | |
2118 | status = fh_compose(tempfh, exp, dentry, NULL); | |
1da177e4 LT |
2119 | if (status) |
2120 | goto out; | |
d50e6136 | 2121 | fhp = tempfh; |
1da177e4 LT |
2122 | } |
2123 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
2124 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
b8dd7b9a AV |
2125 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
2126 | aclsupport = (err == 0); | |
1da177e4 | 2127 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 2128 | if (err == -EOPNOTSUPP) |
1da177e4 | 2129 | bmval0 &= ~FATTR4_WORD0_ACL; |
b8dd7b9a | 2130 | else if (err == -EINVAL) { |
1da177e4 LT |
2131 | status = nfserr_attrnotsupp; |
2132 | goto out; | |
b8dd7b9a | 2133 | } else if (err != 0) |
1da177e4 LT |
2134 | goto out_nfserr; |
2135 | } | |
2136 | } | |
1da177e4 | 2137 | |
18032ca0 DQ |
2138 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
2139 | if ((bmval[2] & FATTR4_WORD2_SECURITY_LABEL) || | |
2140 | bmval[0] & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
2141 | err = security_inode_getsecctx(dentry->d_inode, | |
2142 | &context, &contextlen); | |
2143 | contextsupport = (err == 0); | |
2144 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { | |
2145 | if (err == -EOPNOTSUPP) | |
2146 | bmval2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2147 | else if (err) | |
2148 | goto out_nfserr; | |
2149 | } | |
2150 | } | |
2151 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ | |
2152 | ||
2b44f1ba | 2153 | if (bmval2) { |
ddd1ea56 BF |
2154 | p = xdr_reserve_space(xdr, 16); |
2155 | if (!p) | |
2b44f1ba | 2156 | goto out_resource; |
c373b0a4 BF |
2157 | *p++ = cpu_to_be32(3); |
2158 | *p++ = cpu_to_be32(bmval0); | |
2159 | *p++ = cpu_to_be32(bmval1); | |
2160 | *p++ = cpu_to_be32(bmval2); | |
2b44f1ba | 2161 | } else if (bmval1) { |
ddd1ea56 BF |
2162 | p = xdr_reserve_space(xdr, 12); |
2163 | if (!p) | |
2b44f1ba | 2164 | goto out_resource; |
c373b0a4 BF |
2165 | *p++ = cpu_to_be32(2); |
2166 | *p++ = cpu_to_be32(bmval0); | |
2167 | *p++ = cpu_to_be32(bmval1); | |
7e705706 | 2168 | } else { |
ddd1ea56 BF |
2169 | p = xdr_reserve_space(xdr, 8); |
2170 | if (!p) | |
2b44f1ba | 2171 | goto out_resource; |
c373b0a4 BF |
2172 | *p++ = cpu_to_be32(1); |
2173 | *p++ = cpu_to_be32(bmval0); | |
7e705706 | 2174 | } |
082d4bd7 BF |
2175 | |
2176 | attrlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
2177 | p = xdr_reserve_space(xdr, 4); |
2178 | if (!p) | |
2179 | goto out_resource; | |
082d4bd7 | 2180 | p++; /* to be backfilled later */ |
1da177e4 LT |
2181 | |
2182 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
7e705706 AA |
2183 | u32 word0 = nfsd_suppattrs0(minorversion); |
2184 | u32 word1 = nfsd_suppattrs1(minorversion); | |
2185 | u32 word2 = nfsd_suppattrs2(minorversion); | |
2186 | ||
42ca0993 BF |
2187 | if (!aclsupport) |
2188 | word0 &= ~FATTR4_WORD0_ACL; | |
18032ca0 DQ |
2189 | if (!contextsupport) |
2190 | word2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
7e705706 | 2191 | if (!word2) { |
ddd1ea56 BF |
2192 | p = xdr_reserve_space(xdr, 12); |
2193 | if (!p) | |
2b44f1ba | 2194 | goto out_resource; |
c373b0a4 BF |
2195 | *p++ = cpu_to_be32(2); |
2196 | *p++ = cpu_to_be32(word0); | |
2197 | *p++ = cpu_to_be32(word1); | |
7e705706 | 2198 | } else { |
ddd1ea56 BF |
2199 | p = xdr_reserve_space(xdr, 16); |
2200 | if (!p) | |
2b44f1ba | 2201 | goto out_resource; |
c373b0a4 BF |
2202 | *p++ = cpu_to_be32(3); |
2203 | *p++ = cpu_to_be32(word0); | |
2204 | *p++ = cpu_to_be32(word1); | |
2205 | *p++ = cpu_to_be32(word2); | |
7e705706 | 2206 | } |
1da177e4 LT |
2207 | } |
2208 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
ddd1ea56 BF |
2209 | p = xdr_reserve_space(xdr, 4); |
2210 | if (!p) | |
1da177e4 | 2211 | goto out_resource; |
3d2544b1 | 2212 | dummy = nfs4_file_type(stat.mode); |
6b6d8137 BF |
2213 | if (dummy == NF4BAD) { |
2214 | status = nfserr_serverfault; | |
2215 | goto out; | |
2216 | } | |
c373b0a4 | 2217 | *p++ = cpu_to_be32(dummy); |
1da177e4 LT |
2218 | } |
2219 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
ddd1ea56 BF |
2220 | p = xdr_reserve_space(xdr, 4); |
2221 | if (!p) | |
1da177e4 | 2222 | goto out_resource; |
49640001 | 2223 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
c373b0a4 | 2224 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT); |
49640001 | 2225 | else |
c373b0a4 BF |
2226 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT| |
2227 | NFS4_FH_VOL_RENAME); | |
1da177e4 LT |
2228 | } |
2229 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
ddd1ea56 BF |
2230 | p = xdr_reserve_space(xdr, 8); |
2231 | if (!p) | |
1da177e4 | 2232 | goto out_resource; |
d05d5744 | 2233 | p = encode_change(p, &stat, dentry->d_inode); |
1da177e4 LT |
2234 | } |
2235 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
ddd1ea56 BF |
2236 | p = xdr_reserve_space(xdr, 8); |
2237 | if (!p) | |
1da177e4 | 2238 | goto out_resource; |
b64c7f3b | 2239 | p = xdr_encode_hyper(p, stat.size); |
1da177e4 LT |
2240 | } |
2241 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
ddd1ea56 BF |
2242 | p = xdr_reserve_space(xdr, 4); |
2243 | if (!p) | |
1da177e4 | 2244 | goto out_resource; |
c373b0a4 | 2245 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2246 | } |
2247 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
ddd1ea56 BF |
2248 | p = xdr_reserve_space(xdr, 4); |
2249 | if (!p) | |
1da177e4 | 2250 | goto out_resource; |
c373b0a4 | 2251 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2252 | } |
2253 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
ddd1ea56 BF |
2254 | p = xdr_reserve_space(xdr, 4); |
2255 | if (!p) | |
1da177e4 | 2256 | goto out_resource; |
c373b0a4 | 2257 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2258 | } |
2259 | if (bmval0 & FATTR4_WORD0_FSID) { | |
ddd1ea56 BF |
2260 | p = xdr_reserve_space(xdr, 16); |
2261 | if (!p) | |
1da177e4 | 2262 | goto out_resource; |
42ca0993 | 2263 | if (exp->ex_fslocs.migrated) { |
b64c7f3b BF |
2264 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MAJOR); |
2265 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
2266 | } else switch(fsid_source(fhp)) { |
2267 | case FSIDSOURCE_FSID: | |
b64c7f3b BF |
2268 | p = xdr_encode_hyper(p, (u64)exp->ex_fsid); |
2269 | p = xdr_encode_hyper(p, (u64)0); | |
af6a4e28 N |
2270 | break; |
2271 | case FSIDSOURCE_DEV: | |
c373b0a4 BF |
2272 | *p++ = cpu_to_be32(0); |
2273 | *p++ = cpu_to_be32(MAJOR(stat.dev)); | |
2274 | *p++ = cpu_to_be32(0); | |
2275 | *p++ = cpu_to_be32(MINOR(stat.dev)); | |
af6a4e28 N |
2276 | break; |
2277 | case FSIDSOURCE_UUID: | |
94eb3689 KM |
2278 | p = xdr_encode_opaque_fixed(p, exp->ex_uuid, |
2279 | EX_UUID_LEN); | |
af6a4e28 | 2280 | break; |
1da177e4 LT |
2281 | } |
2282 | } | |
2283 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
ddd1ea56 BF |
2284 | p = xdr_reserve_space(xdr, 4); |
2285 | if (!p) | |
1da177e4 | 2286 | goto out_resource; |
c373b0a4 | 2287 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2288 | } |
2289 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
ddd1ea56 BF |
2290 | p = xdr_reserve_space(xdr, 4); |
2291 | if (!p) | |
1da177e4 | 2292 | goto out_resource; |
c373b0a4 | 2293 | *p++ = cpu_to_be32(nn->nfsd4_lease); |
1da177e4 LT |
2294 | } |
2295 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
ddd1ea56 BF |
2296 | p = xdr_reserve_space(xdr, 4); |
2297 | if (!p) | |
1da177e4 | 2298 | goto out_resource; |
c373b0a4 | 2299 | *p++ = cpu_to_be32(rdattr_err); |
1da177e4 LT |
2300 | } |
2301 | if (bmval0 & FATTR4_WORD0_ACL) { | |
2302 | struct nfs4_ace *ace; | |
1da177e4 LT |
2303 | |
2304 | if (acl == NULL) { | |
ddd1ea56 BF |
2305 | p = xdr_reserve_space(xdr, 4); |
2306 | if (!p) | |
1da177e4 LT |
2307 | goto out_resource; |
2308 | ||
c373b0a4 | 2309 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2310 | goto out_acl; |
2311 | } | |
ddd1ea56 BF |
2312 | p = xdr_reserve_space(xdr, 4); |
2313 | if (!p) | |
1da177e4 | 2314 | goto out_resource; |
c373b0a4 | 2315 | *p++ = cpu_to_be32(acl->naces); |
1da177e4 | 2316 | |
28e05dd8 | 2317 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
ddd1ea56 BF |
2318 | p = xdr_reserve_space(xdr, 4*3); |
2319 | if (!p) | |
1da177e4 | 2320 | goto out_resource; |
c373b0a4 BF |
2321 | *p++ = cpu_to_be32(ace->type); |
2322 | *p++ = cpu_to_be32(ace->flag); | |
2323 | *p++ = cpu_to_be32(ace->access_mask & | |
2324 | NFS4_ACE_MASK_ALL); | |
ddd1ea56 | 2325 | status = nfsd4_encode_aclname(xdr, rqstp, ace); |
1da177e4 LT |
2326 | if (status) |
2327 | goto out; | |
2328 | } | |
2329 | } | |
2330 | out_acl: | |
2331 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
ddd1ea56 BF |
2332 | p = xdr_reserve_space(xdr, 4); |
2333 | if (!p) | |
1da177e4 | 2334 | goto out_resource; |
c373b0a4 | 2335 | *p++ = cpu_to_be32(aclsupport ? |
1da177e4 LT |
2336 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); |
2337 | } | |
2338 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
ddd1ea56 BF |
2339 | p = xdr_reserve_space(xdr, 4); |
2340 | if (!p) | |
1da177e4 | 2341 | goto out_resource; |
c373b0a4 | 2342 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2343 | } |
2344 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
ddd1ea56 BF |
2345 | p = xdr_reserve_space(xdr, 4); |
2346 | if (!p) | |
1da177e4 | 2347 | goto out_resource; |
c373b0a4 | 2348 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2349 | } |
2350 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
ddd1ea56 BF |
2351 | p = xdr_reserve_space(xdr, 4); |
2352 | if (!p) | |
1da177e4 | 2353 | goto out_resource; |
c373b0a4 | 2354 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2355 | } |
2356 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
ddd1ea56 BF |
2357 | p = xdr_reserve_space(xdr, 4); |
2358 | if (!p) | |
1da177e4 | 2359 | goto out_resource; |
c373b0a4 | 2360 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2361 | } |
2362 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
ddd1ea56 BF |
2363 | p = xdr_reserve_space(xdr, fhp->fh_handle.fh_size + 4); |
2364 | if (!p) | |
1da177e4 | 2365 | goto out_resource; |
0c0c267b BF |
2366 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, |
2367 | fhp->fh_handle.fh_size); | |
1da177e4 LT |
2368 | } |
2369 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
ddd1ea56 BF |
2370 | p = xdr_reserve_space(xdr, 8); |
2371 | if (!p) | |
1da177e4 | 2372 | goto out_resource; |
b64c7f3b | 2373 | p = xdr_encode_hyper(p, stat.ino); |
1da177e4 LT |
2374 | } |
2375 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
ddd1ea56 BF |
2376 | p = xdr_reserve_space(xdr, 8); |
2377 | if (!p) | |
1da177e4 | 2378 | goto out_resource; |
b64c7f3b | 2379 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
2380 | } |
2381 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
ddd1ea56 BF |
2382 | p = xdr_reserve_space(xdr, 8); |
2383 | if (!p) | |
1da177e4 | 2384 | goto out_resource; |
b64c7f3b | 2385 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
2386 | } |
2387 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
ddd1ea56 BF |
2388 | p = xdr_reserve_space(xdr, 8); |
2389 | if (!p) | |
1da177e4 | 2390 | goto out_resource; |
b64c7f3b | 2391 | p = xdr_encode_hyper(p, (u64) statfs.f_files); |
1da177e4 | 2392 | } |
81c3f413 | 2393 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
ddd1ea56 | 2394 | status = nfsd4_encode_fs_locations(xdr, rqstp, exp); |
81c3f413 BF |
2395 | if (status) |
2396 | goto out; | |
2397 | } | |
1da177e4 | 2398 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
ddd1ea56 BF |
2399 | p = xdr_reserve_space(xdr, 4); |
2400 | if (!p) | |
1da177e4 | 2401 | goto out_resource; |
c373b0a4 | 2402 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2403 | } |
2404 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
ddd1ea56 BF |
2405 | p = xdr_reserve_space(xdr, 8); |
2406 | if (!p) | |
1da177e4 | 2407 | goto out_resource; |
b64c7f3b | 2408 | p = xdr_encode_hyper(p, exp->ex_path.mnt->mnt_sb->s_maxbytes); |
1da177e4 LT |
2409 | } |
2410 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
ddd1ea56 BF |
2411 | p = xdr_reserve_space(xdr, 4); |
2412 | if (!p) | |
1da177e4 | 2413 | goto out_resource; |
c373b0a4 | 2414 | *p++ = cpu_to_be32(255); |
1da177e4 LT |
2415 | } |
2416 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
ddd1ea56 BF |
2417 | p = xdr_reserve_space(xdr, 4); |
2418 | if (!p) | |
1da177e4 | 2419 | goto out_resource; |
c373b0a4 | 2420 | *p++ = cpu_to_be32(statfs.f_namelen); |
1da177e4 LT |
2421 | } |
2422 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
ddd1ea56 BF |
2423 | p = xdr_reserve_space(xdr, 8); |
2424 | if (!p) | |
1da177e4 | 2425 | goto out_resource; |
b64c7f3b | 2426 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2427 | } |
2428 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
ddd1ea56 BF |
2429 | p = xdr_reserve_space(xdr, 8); |
2430 | if (!p) | |
1da177e4 | 2431 | goto out_resource; |
b64c7f3b | 2432 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2433 | } |
2434 | if (bmval1 & FATTR4_WORD1_MODE) { | |
ddd1ea56 BF |
2435 | p = xdr_reserve_space(xdr, 4); |
2436 | if (!p) | |
1da177e4 | 2437 | goto out_resource; |
c373b0a4 | 2438 | *p++ = cpu_to_be32(stat.mode & S_IALLUGO); |
1da177e4 LT |
2439 | } |
2440 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
ddd1ea56 BF |
2441 | p = xdr_reserve_space(xdr, 4); |
2442 | if (!p) | |
1da177e4 | 2443 | goto out_resource; |
c373b0a4 | 2444 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2445 | } |
2446 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
ddd1ea56 BF |
2447 | p = xdr_reserve_space(xdr, 4); |
2448 | if (!p) | |
1da177e4 | 2449 | goto out_resource; |
c373b0a4 | 2450 | *p++ = cpu_to_be32(stat.nlink); |
1da177e4 LT |
2451 | } |
2452 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
ddd1ea56 | 2453 | status = nfsd4_encode_user(xdr, rqstp, stat.uid); |
1da177e4 LT |
2454 | if (status) |
2455 | goto out; | |
2456 | } | |
2457 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
ddd1ea56 | 2458 | status = nfsd4_encode_group(xdr, rqstp, stat.gid); |
1da177e4 LT |
2459 | if (status) |
2460 | goto out; | |
2461 | } | |
2462 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
ddd1ea56 BF |
2463 | p = xdr_reserve_space(xdr, 8); |
2464 | if (!p) | |
1da177e4 | 2465 | goto out_resource; |
c373b0a4 BF |
2466 | *p++ = cpu_to_be32((u32) MAJOR(stat.rdev)); |
2467 | *p++ = cpu_to_be32((u32) MINOR(stat.rdev)); | |
1da177e4 LT |
2468 | } |
2469 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
ddd1ea56 BF |
2470 | p = xdr_reserve_space(xdr, 8); |
2471 | if (!p) | |
1da177e4 LT |
2472 | goto out_resource; |
2473 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
b64c7f3b | 2474 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2475 | } |
2476 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
ddd1ea56 BF |
2477 | p = xdr_reserve_space(xdr, 8); |
2478 | if (!p) | |
1da177e4 LT |
2479 | goto out_resource; |
2480 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
b64c7f3b | 2481 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2482 | } |
2483 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
ddd1ea56 BF |
2484 | p = xdr_reserve_space(xdr, 8); |
2485 | if (!p) | |
1da177e4 LT |
2486 | goto out_resource; |
2487 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
b64c7f3b | 2488 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2489 | } |
2490 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
ddd1ea56 BF |
2491 | p = xdr_reserve_space(xdr, 8); |
2492 | if (!p) | |
1da177e4 LT |
2493 | goto out_resource; |
2494 | dummy64 = (u64)stat.blocks << 9; | |
b64c7f3b | 2495 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2496 | } |
2497 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
ddd1ea56 BF |
2498 | p = xdr_reserve_space(xdr, 12); |
2499 | if (!p) | |
1da177e4 | 2500 | goto out_resource; |
b64c7f3b | 2501 | p = xdr_encode_hyper(p, (s64)stat.atime.tv_sec); |
c373b0a4 | 2502 | *p++ = cpu_to_be32(stat.atime.tv_nsec); |
1da177e4 LT |
2503 | } |
2504 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
ddd1ea56 BF |
2505 | p = xdr_reserve_space(xdr, 12); |
2506 | if (!p) | |
1da177e4 | 2507 | goto out_resource; |
c373b0a4 BF |
2508 | *p++ = cpu_to_be32(0); |
2509 | *p++ = cpu_to_be32(1); | |
2510 | *p++ = cpu_to_be32(0); | |
1da177e4 LT |
2511 | } |
2512 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
ddd1ea56 BF |
2513 | p = xdr_reserve_space(xdr, 12); |
2514 | if (!p) | |
1da177e4 | 2515 | goto out_resource; |
b64c7f3b | 2516 | p = xdr_encode_hyper(p, (s64)stat.ctime.tv_sec); |
c373b0a4 | 2517 | *p++ = cpu_to_be32(stat.ctime.tv_nsec); |
1da177e4 LT |
2518 | } |
2519 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
ddd1ea56 BF |
2520 | p = xdr_reserve_space(xdr, 12); |
2521 | if (!p) | |
1da177e4 | 2522 | goto out_resource; |
b64c7f3b | 2523 | p = xdr_encode_hyper(p, (s64)stat.mtime.tv_sec); |
c373b0a4 | 2524 | *p++ = cpu_to_be32(stat.mtime.tv_nsec); |
1da177e4 LT |
2525 | } |
2526 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
ddd1ea56 BF |
2527 | p = xdr_reserve_space(xdr, 8); |
2528 | if (!p) | |
1da177e4 | 2529 | goto out_resource; |
406a7ea9 FF |
2530 | /* |
2531 | * Get parent's attributes if not ignoring crossmount | |
2532 | * and this is the root of a cross-mounted filesystem. | |
2533 | */ | |
2534 | if (ignore_crossmnt == 0 && | |
ae7095a7 BF |
2535 | dentry == exp->ex_path.mnt->mnt_root) |
2536 | get_parent_attributes(exp, &stat); | |
b64c7f3b | 2537 | p = xdr_encode_hyper(p, stat.ino); |
1da177e4 | 2538 | } |
18032ca0 | 2539 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { |
ddd1ea56 BF |
2540 | status = nfsd4_encode_security_label(xdr, rqstp, context, |
2541 | contextlen); | |
18032ca0 DQ |
2542 | if (status) |
2543 | goto out; | |
2544 | } | |
8c18f205 | 2545 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
ddd1ea56 BF |
2546 | p = xdr_reserve_space(xdr, 16); |
2547 | if (!p) | |
de3997a7 | 2548 | goto out_resource; |
c373b0a4 BF |
2549 | *p++ = cpu_to_be32(3); |
2550 | *p++ = cpu_to_be32(NFSD_SUPPATTR_EXCLCREAT_WORD0); | |
2551 | *p++ = cpu_to_be32(NFSD_SUPPATTR_EXCLCREAT_WORD1); | |
2552 | *p++ = cpu_to_be32(NFSD_SUPPATTR_EXCLCREAT_WORD2); | |
8c18f205 | 2553 | } |
7e705706 | 2554 | |
082d4bd7 BF |
2555 | attrlen = htonl(xdr->buf->len - attrlen_offset - 4); |
2556 | write_bytes_to_xdr_buf(xdr->buf, attrlen_offset, &attrlen, 4); | |
1da177e4 LT |
2557 | status = nfs_ok; |
2558 | ||
2559 | out: | |
ba4e55bb | 2560 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
18032ca0 DQ |
2561 | if (context) |
2562 | security_release_secctx(context, contextlen); | |
ba4e55bb | 2563 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ |
28e05dd8 | 2564 | kfree(acl); |
18df11d0 | 2565 | if (tempfh) { |
d50e6136 | 2566 | fh_put(tempfh); |
18df11d0 YZ |
2567 | kfree(tempfh); |
2568 | } | |
1fcea5b2 BF |
2569 | if (status) |
2570 | xdr_truncate_encode(xdr, starting_len); | |
1da177e4 LT |
2571 | return status; |
2572 | out_nfserr: | |
b8dd7b9a | 2573 | status = nfserrno(err); |
1da177e4 LT |
2574 | goto out; |
2575 | out_resource: | |
1da177e4 LT |
2576 | status = nfserr_resource; |
2577 | goto out; | |
1da177e4 LT |
2578 | } |
2579 | ||
2825a7f9 BF |
2580 | static void svcxdr_init_encode_from_buffer(struct xdr_stream *xdr, |
2581 | struct xdr_buf *buf, __be32 *p, int bytes) | |
2582 | { | |
2583 | xdr->scratch.iov_len = 0; | |
2584 | memset(buf, 0, sizeof(struct xdr_buf)); | |
2585 | buf->head[0].iov_base = p; | |
2586 | buf->head[0].iov_len = 0; | |
2587 | buf->len = 0; | |
2588 | xdr->buf = buf; | |
2589 | xdr->iov = buf->head; | |
2590 | xdr->p = p; | |
2591 | xdr->end = (void *)p + bytes; | |
2592 | buf->buflen = bytes; | |
2593 | } | |
2594 | ||
d5184658 BF |
2595 | __be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words, |
2596 | struct svc_fh *fhp, struct svc_export *exp, | |
2597 | struct dentry *dentry, u32 *bmval, | |
2598 | struct svc_rqst *rqstp, int ignore_crossmnt) | |
2599 | { | |
2825a7f9 | 2600 | struct xdr_buf dummy; |
d5184658 BF |
2601 | struct xdr_stream xdr; |
2602 | __be32 ret; | |
2603 | ||
2825a7f9 | 2604 | svcxdr_init_encode_from_buffer(&xdr, &dummy, *p, words << 2); |
d5184658 BF |
2605 | ret = nfsd4_encode_fattr(&xdr, fhp, exp, dentry, bmval, rqstp, |
2606 | ignore_crossmnt); | |
2607 | *p = xdr.p; | |
2608 | return ret; | |
2609 | } | |
2610 | ||
c0ce6ec8 BF |
2611 | static inline int attributes_need_mount(u32 *bmval) |
2612 | { | |
2613 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2614 | return 1; | |
2615 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2616 | return 1; | |
2617 | return 0; | |
2618 | } | |
2619 | ||
b37ad28b | 2620 | static __be32 |
561f0ed4 BF |
2621 | nfsd4_encode_dirent_fattr(struct xdr_stream *xdr, struct nfsd4_readdir *cd, |
2622 | const char *name, int namlen) | |
1da177e4 LT |
2623 | { |
2624 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2625 | struct dentry *dentry; | |
b37ad28b | 2626 | __be32 nfserr; |
406a7ea9 | 2627 | int ignore_crossmnt = 0; |
1da177e4 LT |
2628 | |
2629 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
2630 | if (IS_ERR(dentry)) | |
2631 | return nfserrno(PTR_ERR(dentry)); | |
b2c0cea6 BF |
2632 | if (!dentry->d_inode) { |
2633 | /* | |
2634 | * nfsd_buffered_readdir drops the i_mutex between | |
2635 | * readdir and calling this callback, leaving a window | |
2636 | * where this directory entry could have gone away. | |
2637 | */ | |
2638 | dput(dentry); | |
2639 | return nfserr_noent; | |
2640 | } | |
1da177e4 LT |
2641 | |
2642 | exp_get(exp); | |
406a7ea9 FF |
2643 | /* |
2644 | * In the case of a mountpoint, the client may be asking for | |
2645 | * attributes that are only properties of the underlying filesystem | |
2646 | * as opposed to the cross-mounted file system. In such a case, | |
2647 | * we will not follow the cross mount and will fill the attribtutes | |
2648 | * directly from the mountpoint dentry. | |
2649 | */ | |
3227fa41 | 2650 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
2651 | int err; |
2652 | ||
3227fa41 BF |
2653 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
2654 | && !attributes_need_mount(cd->rd_bmval)) { | |
2655 | ignore_crossmnt = 1; | |
2656 | goto out_encode; | |
2657 | } | |
dcb488a3 AA |
2658 | /* |
2659 | * Why the heck aren't we just using nfsd_lookup?? | |
2660 | * Different "."/".." handling? Something else? | |
2661 | * At least, add a comment here to explain.... | |
2662 | */ | |
021d3a72 BF |
2663 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
2664 | if (err) { | |
2665 | nfserr = nfserrno(err); | |
1da177e4 LT |
2666 | goto out_put; |
2667 | } | |
dcb488a3 AA |
2668 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
2669 | if (nfserr) | |
2670 | goto out_put; | |
1da177e4 LT |
2671 | |
2672 | } | |
3227fa41 | 2673 | out_encode: |
561f0ed4 | 2674 | nfserr = nfsd4_encode_fattr(xdr, NULL, exp, dentry, cd->rd_bmval, |
406a7ea9 | 2675 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
2676 | out_put: |
2677 | dput(dentry); | |
2678 | exp_put(exp); | |
2679 | return nfserr; | |
2680 | } | |
2681 | ||
2ebbc012 | 2682 | static __be32 * |
561f0ed4 | 2683 | nfsd4_encode_rdattr_error(struct xdr_stream *xdr, __be32 nfserr) |
1da177e4 | 2684 | { |
561f0ed4 BF |
2685 | __be32 *p; |
2686 | ||
c3a45617 | 2687 | p = xdr_reserve_space(xdr, 20); |
561f0ed4 | 2688 | if (!p) |
1da177e4 LT |
2689 | return NULL; |
2690 | *p++ = htonl(2); | |
2691 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
2692 | *p++ = htonl(0); /* bmval1 */ | |
2693 | ||
87915c64 | 2694 | *p++ = htonl(4); /* attribute length */ |
1da177e4 | 2695 | *p++ = nfserr; /* no htonl */ |
1da177e4 LT |
2696 | return p; |
2697 | } | |
2698 | ||
2699 | static int | |
a0ad13ef N |
2700 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
2701 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 2702 | { |
a0ad13ef | 2703 | struct readdir_cd *ccd = ccdv; |
1da177e4 | 2704 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
561f0ed4 BF |
2705 | struct xdr_stream *xdr = cd->xdr; |
2706 | int start_offset = xdr->buf->len; | |
2707 | int cookie_offset; | |
aee37764 | 2708 | u32 name_and_cookie; |
561f0ed4 | 2709 | int entry_bytes; |
b37ad28b | 2710 | __be32 nfserr = nfserr_toosmall; |
561f0ed4 BF |
2711 | __be64 wire_offset; |
2712 | __be32 *p; | |
1da177e4 LT |
2713 | |
2714 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
2715 | if (name && isdotent(name, namlen)) { | |
2716 | cd->common.err = nfs_ok; | |
2717 | return 0; | |
2718 | } | |
2719 | ||
561f0ed4 BF |
2720 | if (cd->cookie_offset) { |
2721 | wire_offset = cpu_to_be64(offset); | |
2722 | write_bytes_to_xdr_buf(xdr->buf, cd->cookie_offset, | |
2723 | &wire_offset, 8); | |
2724 | } | |
1da177e4 | 2725 | |
561f0ed4 BF |
2726 | p = xdr_reserve_space(xdr, 4); |
2727 | if (!p) | |
1da177e4 | 2728 | goto fail; |
1da177e4 | 2729 | *p++ = xdr_one; /* mark entry present */ |
561f0ed4 BF |
2730 | cookie_offset = xdr->buf->len; |
2731 | p = xdr_reserve_space(xdr, 3*4 + namlen); | |
2732 | if (!p) | |
2733 | goto fail; | |
1da177e4 LT |
2734 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
2735 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
2736 | ||
561f0ed4 | 2737 | nfserr = nfsd4_encode_dirent_fattr(xdr, cd, name, namlen); |
1da177e4 LT |
2738 | switch (nfserr) { |
2739 | case nfs_ok: | |
1da177e4 LT |
2740 | break; |
2741 | case nfserr_resource: | |
2742 | nfserr = nfserr_toosmall; | |
2743 | goto fail; | |
b2c0cea6 | 2744 | case nfserr_noent: |
f41c5ad2 | 2745 | xdr_truncate_encode(xdr, start_offset); |
b2c0cea6 | 2746 | goto skip_entry; |
1da177e4 LT |
2747 | default: |
2748 | /* | |
2749 | * If the client requested the RDATTR_ERROR attribute, | |
2750 | * we stuff the error code into this attribute | |
2751 | * and continue. If this attribute was not requested, | |
2752 | * then in accordance with the spec, we fail the | |
2753 | * entire READDIR operation(!) | |
2754 | */ | |
2755 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
2756 | goto fail; | |
561f0ed4 | 2757 | p = nfsd4_encode_rdattr_error(xdr, nfserr); |
34081efc FI |
2758 | if (p == NULL) { |
2759 | nfserr = nfserr_toosmall; | |
1da177e4 | 2760 | goto fail; |
34081efc | 2761 | } |
1da177e4 | 2762 | } |
561f0ed4 BF |
2763 | nfserr = nfserr_toosmall; |
2764 | entry_bytes = xdr->buf->len - start_offset; | |
2765 | if (entry_bytes > cd->rd_maxcount) | |
2766 | goto fail; | |
2767 | cd->rd_maxcount -= entry_bytes; | |
3b299709 BF |
2768 | if (!cd->rd_dircount) |
2769 | goto fail; | |
aee37764 BF |
2770 | /* |
2771 | * RFC 3530 14.2.24 describes rd_dircount as only a "hint", so | |
2772 | * let's always let through the first entry, at least: | |
2773 | */ | |
2774 | name_and_cookie = 4 * XDR_QUADLEN(namlen) + 8; | |
2775 | if (name_and_cookie > cd->rd_dircount && cd->cookie_offset) | |
2776 | goto fail; | |
2777 | cd->rd_dircount -= min(cd->rd_dircount, name_and_cookie); | |
561f0ed4 | 2778 | cd->cookie_offset = cookie_offset; |
b2c0cea6 | 2779 | skip_entry: |
1da177e4 LT |
2780 | cd->common.err = nfs_ok; |
2781 | return 0; | |
2782 | fail: | |
561f0ed4 | 2783 | xdr_truncate_encode(xdr, start_offset); |
1da177e4 LT |
2784 | cd->common.err = nfserr; |
2785 | return -EINVAL; | |
2786 | } | |
2787 | ||
d0a381dd BF |
2788 | static __be32 |
2789 | nfsd4_encode_stateid(struct xdr_stream *xdr, stateid_t *sid) | |
e2f282b9 | 2790 | { |
bc749ca4 | 2791 | __be32 *p; |
e2f282b9 | 2792 | |
d0a381dd BF |
2793 | p = xdr_reserve_space(xdr, sizeof(stateid_t)); |
2794 | if (!p) | |
2795 | return nfserr_resource; | |
c373b0a4 | 2796 | *p++ = cpu_to_be32(sid->si_generation); |
0c0c267b BF |
2797 | p = xdr_encode_opaque_fixed(p, &sid->si_opaque, |
2798 | sizeof(stateid_opaque_t)); | |
d0a381dd | 2799 | return 0; |
e2f282b9 BH |
2800 | } |
2801 | ||
695e12f8 | 2802 | static __be32 |
b37ad28b | 2803 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 2804 | { |
d0a381dd | 2805 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2806 | __be32 *p; |
1da177e4 LT |
2807 | |
2808 | if (!nfserr) { | |
d0a381dd BF |
2809 | p = xdr_reserve_space(xdr, 8); |
2810 | if (!p) | |
2811 | return nfserr_resource; | |
c373b0a4 BF |
2812 | *p++ = cpu_to_be32(access->ac_supported); |
2813 | *p++ = cpu_to_be32(access->ac_resp_access); | |
1da177e4 | 2814 | } |
695e12f8 | 2815 | return nfserr; |
1da177e4 LT |
2816 | } |
2817 | ||
1d1bc8f2 BF |
2818 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
2819 | { | |
d0a381dd | 2820 | struct xdr_stream *xdr = &resp->xdr; |
1d1bc8f2 BF |
2821 | __be32 *p; |
2822 | ||
2823 | if (!nfserr) { | |
d0a381dd BF |
2824 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 8); |
2825 | if (!p) | |
2826 | return nfserr_resource; | |
0c0c267b BF |
2827 | p = xdr_encode_opaque_fixed(p, bcts->sessionid.data, |
2828 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 | 2829 | *p++ = cpu_to_be32(bcts->dir); |
6e67b5d1 | 2830 | /* Sorry, we do not yet support RDMA over 4.1: */ |
c373b0a4 | 2831 | *p++ = cpu_to_be32(0); |
1d1bc8f2 BF |
2832 | } |
2833 | return nfserr; | |
2834 | } | |
2835 | ||
695e12f8 | 2836 | static __be32 |
b37ad28b | 2837 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 | 2838 | { |
d0a381dd BF |
2839 | struct xdr_stream *xdr = &resp->xdr; |
2840 | ||
e2f282b9 | 2841 | if (!nfserr) |
d0a381dd | 2842 | nfserr = nfsd4_encode_stateid(xdr, &close->cl_stateid); |
e2f282b9 | 2843 | |
695e12f8 | 2844 | return nfserr; |
1da177e4 LT |
2845 | } |
2846 | ||
2847 | ||
695e12f8 | 2848 | static __be32 |
b37ad28b | 2849 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 2850 | { |
d0a381dd | 2851 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2852 | __be32 *p; |
1da177e4 LT |
2853 | |
2854 | if (!nfserr) { | |
d0a381dd BF |
2855 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
2856 | if (!p) | |
2857 | return nfserr_resource; | |
0c0c267b BF |
2858 | p = xdr_encode_opaque_fixed(p, commit->co_verf.data, |
2859 | NFS4_VERIFIER_SIZE); | |
1da177e4 | 2860 | } |
695e12f8 | 2861 | return nfserr; |
1da177e4 LT |
2862 | } |
2863 | ||
695e12f8 | 2864 | static __be32 |
b37ad28b | 2865 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 2866 | { |
d0a381dd | 2867 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2868 | __be32 *p; |
1da177e4 LT |
2869 | |
2870 | if (!nfserr) { | |
d0a381dd BF |
2871 | p = xdr_reserve_space(xdr, 32); |
2872 | if (!p) | |
2873 | return nfserr_resource; | |
d05d5744 | 2874 | p = encode_cinfo(p, &create->cr_cinfo); |
c373b0a4 BF |
2875 | *p++ = cpu_to_be32(2); |
2876 | *p++ = cpu_to_be32(create->cr_bmval[0]); | |
2877 | *p++ = cpu_to_be32(create->cr_bmval[1]); | |
1da177e4 | 2878 | } |
695e12f8 | 2879 | return nfserr; |
1da177e4 LT |
2880 | } |
2881 | ||
b37ad28b AV |
2882 | static __be32 |
2883 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
2884 | { |
2885 | struct svc_fh *fhp = getattr->ga_fhp; | |
d5184658 | 2886 | struct xdr_stream *xdr = &resp->xdr; |
1da177e4 LT |
2887 | |
2888 | if (nfserr) | |
2889 | return nfserr; | |
2890 | ||
d5184658 BF |
2891 | nfserr = nfsd4_encode_fattr(xdr, fhp, fhp->fh_export, fhp->fh_dentry, |
2892 | getattr->ga_bmval, | |
406a7ea9 | 2893 | resp->rqstp, 0); |
1da177e4 LT |
2894 | return nfserr; |
2895 | } | |
2896 | ||
695e12f8 BH |
2897 | static __be32 |
2898 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 2899 | { |
d0a381dd | 2900 | struct xdr_stream *xdr = &resp->xdr; |
695e12f8 | 2901 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 2902 | unsigned int len; |
bc749ca4 | 2903 | __be32 *p; |
1da177e4 LT |
2904 | |
2905 | if (!nfserr) { | |
2906 | len = fhp->fh_handle.fh_size; | |
d0a381dd BF |
2907 | p = xdr_reserve_space(xdr, len + 4); |
2908 | if (!p) | |
2909 | return nfserr_resource; | |
0c0c267b | 2910 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, len); |
1da177e4 | 2911 | } |
695e12f8 | 2912 | return nfserr; |
1da177e4 LT |
2913 | } |
2914 | ||
2915 | /* | |
2916 | * Including all fields other than the name, a LOCK4denied structure requires | |
2917 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
2918 | */ | |
d0a381dd BF |
2919 | static __be32 |
2920 | nfsd4_encode_lock_denied(struct xdr_stream *xdr, struct nfsd4_lock_denied *ld) | |
1da177e4 | 2921 | { |
7c13f344 | 2922 | struct xdr_netobj *conf = &ld->ld_owner; |
bc749ca4 | 2923 | __be32 *p; |
1da177e4 | 2924 | |
8c7424cf | 2925 | again: |
d0a381dd | 2926 | p = xdr_reserve_space(xdr, 32 + XDR_LEN(conf->len)); |
8c7424cf BF |
2927 | if (!p) { |
2928 | /* | |
2929 | * Don't fail to return the result just because we can't | |
2930 | * return the conflicting open: | |
2931 | */ | |
2932 | if (conf->len) { | |
f98bac5a | 2933 | kfree(conf->data); |
8c7424cf BF |
2934 | conf->len = 0; |
2935 | conf->data = NULL; | |
2936 | goto again; | |
2937 | } | |
d0a381dd | 2938 | return nfserr_resource; |
8c7424cf | 2939 | } |
b64c7f3b BF |
2940 | p = xdr_encode_hyper(p, ld->ld_start); |
2941 | p = xdr_encode_hyper(p, ld->ld_length); | |
c373b0a4 | 2942 | *p++ = cpu_to_be32(ld->ld_type); |
7c13f344 | 2943 | if (conf->len) { |
0c0c267b BF |
2944 | p = xdr_encode_opaque_fixed(p, &ld->ld_clientid, 8); |
2945 | p = xdr_encode_opaque(p, conf->data, conf->len); | |
f98bac5a | 2946 | kfree(conf->data); |
1da177e4 | 2947 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
b64c7f3b | 2948 | p = xdr_encode_hyper(p, (u64)0); /* clientid */ |
c373b0a4 | 2949 | *p++ = cpu_to_be32(0); /* length of owner name */ |
1da177e4 | 2950 | } |
d0a381dd | 2951 | return nfserr_denied; |
1da177e4 LT |
2952 | } |
2953 | ||
695e12f8 | 2954 | static __be32 |
b37ad28b | 2955 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 2956 | { |
d0a381dd BF |
2957 | struct xdr_stream *xdr = &resp->xdr; |
2958 | ||
e2f282b9 | 2959 | if (!nfserr) |
d0a381dd | 2960 | nfserr = nfsd4_encode_stateid(xdr, &lock->lk_resp_stateid); |
e2f282b9 | 2961 | else if (nfserr == nfserr_denied) |
d0a381dd | 2962 | nfserr = nfsd4_encode_lock_denied(xdr, &lock->lk_denied); |
f98bac5a | 2963 | |
695e12f8 | 2964 | return nfserr; |
1da177e4 LT |
2965 | } |
2966 | ||
695e12f8 | 2967 | static __be32 |
b37ad28b | 2968 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 | 2969 | { |
d0a381dd BF |
2970 | struct xdr_stream *xdr = &resp->xdr; |
2971 | ||
1da177e4 | 2972 | if (nfserr == nfserr_denied) |
d0a381dd | 2973 | nfsd4_encode_lock_denied(xdr, &lockt->lt_denied); |
695e12f8 | 2974 | return nfserr; |
1da177e4 LT |
2975 | } |
2976 | ||
695e12f8 | 2977 | static __be32 |
b37ad28b | 2978 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 | 2979 | { |
d0a381dd BF |
2980 | struct xdr_stream *xdr = &resp->xdr; |
2981 | ||
e2f282b9 | 2982 | if (!nfserr) |
d0a381dd | 2983 | nfserr = nfsd4_encode_stateid(xdr, &locku->lu_stateid); |
e2f282b9 | 2984 | |
695e12f8 | 2985 | return nfserr; |
1da177e4 LT |
2986 | } |
2987 | ||
2988 | ||
695e12f8 | 2989 | static __be32 |
b37ad28b | 2990 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 2991 | { |
d0a381dd | 2992 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2993 | __be32 *p; |
1da177e4 LT |
2994 | |
2995 | if (!nfserr) { | |
d0a381dd BF |
2996 | p = xdr_reserve_space(xdr, 20); |
2997 | if (!p) | |
2998 | return nfserr_resource; | |
d05d5744 | 2999 | p = encode_cinfo(p, &link->li_cinfo); |
1da177e4 | 3000 | } |
695e12f8 | 3001 | return nfserr; |
1da177e4 LT |
3002 | } |
3003 | ||
3004 | ||
695e12f8 | 3005 | static __be32 |
b37ad28b | 3006 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 3007 | { |
d0a381dd | 3008 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3009 | __be32 *p; |
1da177e4 LT |
3010 | |
3011 | if (nfserr) | |
3012 | goto out; | |
3013 | ||
d0a381dd BF |
3014 | nfserr = nfsd4_encode_stateid(xdr, &open->op_stateid); |
3015 | if (nfserr) | |
3016 | goto out; | |
3017 | p = xdr_reserve_space(xdr, 40); | |
3018 | if (!p) | |
3019 | return nfserr_resource; | |
d05d5744 | 3020 | p = encode_cinfo(p, &open->op_cinfo); |
c373b0a4 BF |
3021 | *p++ = cpu_to_be32(open->op_rflags); |
3022 | *p++ = cpu_to_be32(2); | |
3023 | *p++ = cpu_to_be32(open->op_bmval[0]); | |
3024 | *p++ = cpu_to_be32(open->op_bmval[1]); | |
3025 | *p++ = cpu_to_be32(open->op_delegate_type); | |
1da177e4 LT |
3026 | |
3027 | switch (open->op_delegate_type) { | |
3028 | case NFS4_OPEN_DELEGATE_NONE: | |
3029 | break; | |
3030 | case NFS4_OPEN_DELEGATE_READ: | |
d0a381dd BF |
3031 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
3032 | if (nfserr) | |
3033 | return nfserr; | |
3034 | p = xdr_reserve_space(xdr, 20); | |
3035 | if (!p) | |
3036 | return nfserr_resource; | |
c373b0a4 | 3037 | *p++ = cpu_to_be32(open->op_recall); |
1da177e4 LT |
3038 | |
3039 | /* | |
3040 | * TODO: ACE's in delegations | |
3041 | */ | |
c373b0a4 BF |
3042 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
3043 | *p++ = cpu_to_be32(0); | |
3044 | *p++ = cpu_to_be32(0); | |
3045 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 LT |
3046 | break; |
3047 | case NFS4_OPEN_DELEGATE_WRITE: | |
d0a381dd BF |
3048 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
3049 | if (nfserr) | |
3050 | return nfserr; | |
3051 | p = xdr_reserve_space(xdr, 32); | |
3052 | if (!p) | |
3053 | return nfserr_resource; | |
c373b0a4 | 3054 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
3055 | |
3056 | /* | |
3057 | * TODO: space_limit's in delegations | |
3058 | */ | |
c373b0a4 BF |
3059 | *p++ = cpu_to_be32(NFS4_LIMIT_SIZE); |
3060 | *p++ = cpu_to_be32(~(u32)0); | |
3061 | *p++ = cpu_to_be32(~(u32)0); | |
1da177e4 LT |
3062 | |
3063 | /* | |
3064 | * TODO: ACE's in delegations | |
3065 | */ | |
c373b0a4 BF |
3066 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
3067 | *p++ = cpu_to_be32(0); | |
3068 | *p++ = cpu_to_be32(0); | |
3069 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 | 3070 | break; |
d24433cd BH |
3071 | case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */ |
3072 | switch (open->op_why_no_deleg) { | |
3073 | case WND4_CONTENTION: | |
3074 | case WND4_RESOURCE: | |
d0a381dd BF |
3075 | p = xdr_reserve_space(xdr, 8); |
3076 | if (!p) | |
3077 | return nfserr_resource; | |
c373b0a4 BF |
3078 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
3079 | /* deleg signaling not supported yet: */ | |
3080 | *p++ = cpu_to_be32(0); | |
d24433cd BH |
3081 | break; |
3082 | default: | |
d0a381dd BF |
3083 | p = xdr_reserve_space(xdr, 4); |
3084 | if (!p) | |
3085 | return nfserr_resource; | |
c373b0a4 | 3086 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
d24433cd | 3087 | } |
d24433cd | 3088 | break; |
1da177e4 LT |
3089 | default: |
3090 | BUG(); | |
3091 | } | |
3092 | /* XXX save filehandle here */ | |
3093 | out: | |
695e12f8 | 3094 | return nfserr; |
1da177e4 LT |
3095 | } |
3096 | ||
695e12f8 | 3097 | static __be32 |
b37ad28b | 3098 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 | 3099 | { |
d0a381dd BF |
3100 | struct xdr_stream *xdr = &resp->xdr; |
3101 | ||
e2f282b9 | 3102 | if (!nfserr) |
d0a381dd | 3103 | nfserr = nfsd4_encode_stateid(xdr, &oc->oc_resp_stateid); |
1da177e4 | 3104 | |
695e12f8 | 3105 | return nfserr; |
1da177e4 LT |
3106 | } |
3107 | ||
695e12f8 | 3108 | static __be32 |
b37ad28b | 3109 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 | 3110 | { |
d0a381dd BF |
3111 | struct xdr_stream *xdr = &resp->xdr; |
3112 | ||
e2f282b9 | 3113 | if (!nfserr) |
d0a381dd | 3114 | nfserr = nfsd4_encode_stateid(xdr, &od->od_stateid); |
1da177e4 | 3115 | |
695e12f8 | 3116 | return nfserr; |
1da177e4 LT |
3117 | } |
3118 | ||
dc97618d BF |
3119 | static __be32 nfsd4_encode_splice_read( |
3120 | struct nfsd4_compoundres *resp, | |
3121 | struct nfsd4_read *read, | |
3122 | struct file *file, unsigned long maxcount) | |
1da177e4 | 3123 | { |
ddd1ea56 | 3124 | struct xdr_stream *xdr = &resp->xdr; |
34a78b48 | 3125 | struct xdr_buf *buf = xdr->buf; |
dc97618d | 3126 | u32 eof; |
30596768 | 3127 | int space_left; |
dc97618d | 3128 | __be32 nfserr; |
fec25fa4 | 3129 | __be32 *p = xdr->p - 2; |
1da177e4 | 3130 | |
d5d5c304 KM |
3131 | /* Make sure there will be room for padding if needed */ |
3132 | if (xdr->end - xdr->p < 1) | |
d0a381dd | 3133 | return nfserr_resource; |
dc97618d BF |
3134 | |
3135 | nfserr = nfsd_splice_read(read->rd_rqstp, file, | |
3136 | read->rd_offset, &maxcount); | |
3137 | if (nfserr) { | |
3138 | /* | |
3139 | * nfsd_splice_actor may have already messed with the | |
3140 | * page length; reset it so as not to confuse | |
3141 | * xdr_truncate_encode: | |
3142 | */ | |
34a78b48 | 3143 | buf->page_len = 0; |
dc97618d | 3144 | return nfserr; |
b0e35fda | 3145 | } |
1da177e4 | 3146 | |
dc97618d BF |
3147 | eof = (read->rd_offset + maxcount >= |
3148 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
4e21ac4b | 3149 | |
fec25fa4 BF |
3150 | *(p++) = htonl(eof); |
3151 | *(p++) = htonl(maxcount); | |
dc97618d | 3152 | |
34a78b48 BF |
3153 | buf->page_len = maxcount; |
3154 | buf->len += maxcount; | |
15b23ef5 BF |
3155 | xdr->page_ptr += (buf->page_base + maxcount + PAGE_SIZE - 1) |
3156 | / PAGE_SIZE; | |
dc97618d BF |
3157 | |
3158 | /* Use rest of head for padding and remaining ops: */ | |
34a78b48 BF |
3159 | buf->tail[0].iov_base = xdr->p; |
3160 | buf->tail[0].iov_len = 0; | |
fec25fa4 | 3161 | xdr->iov = buf->tail; |
dc97618d | 3162 | if (maxcount&3) { |
fec25fa4 BF |
3163 | int pad = 4 - (maxcount&3); |
3164 | ||
3165 | *(xdr->p++) = 0; | |
3166 | ||
34a78b48 | 3167 | buf->tail[0].iov_base += maxcount&3; |
fec25fa4 BF |
3168 | buf->tail[0].iov_len = pad; |
3169 | buf->len += pad; | |
b0e35fda | 3170 | } |
2825a7f9 | 3171 | |
dc97618d | 3172 | space_left = min_t(int, (void *)xdr->end - (void *)xdr->p, |
34a78b48 BF |
3173 | buf->buflen - buf->len); |
3174 | buf->buflen = buf->len + space_left; | |
dc97618d BF |
3175 | xdr->end = (__be32 *)((void *)xdr->end + space_left); |
3176 | ||
3177 | return 0; | |
3178 | } | |
3179 | ||
3180 | static __be32 nfsd4_encode_readv(struct nfsd4_compoundres *resp, | |
3181 | struct nfsd4_read *read, | |
3182 | struct file *file, unsigned long maxcount) | |
3183 | { | |
3184 | struct xdr_stream *xdr = &resp->xdr; | |
3185 | u32 eof; | |
3186 | int v; | |
dc97618d | 3187 | int starting_len = xdr->buf->len - 8; |
dc97618d | 3188 | long len; |
b0420980 | 3189 | int thislen; |
dc97618d BF |
3190 | __be32 nfserr; |
3191 | __be32 tmp; | |
3192 | __be32 *p; | |
b0420980 BF |
3193 | u32 zzz = 0; |
3194 | int pad; | |
1da177e4 LT |
3195 | |
3196 | len = maxcount; | |
3197 | v = 0; | |
6ff9897d | 3198 | |
1055414f | 3199 | thislen = min_t(long, len, ((void *)xdr->end - (void *)xdr->p)); |
b0420980 BF |
3200 | p = xdr_reserve_space(xdr, (thislen+3)&~3); |
3201 | WARN_ON_ONCE(!p); | |
3202 | resp->rqstp->rq_vec[v].iov_base = p; | |
3203 | resp->rqstp->rq_vec[v].iov_len = thislen; | |
3204 | v++; | |
3205 | len -= thislen; | |
3206 | ||
3207 | while (len) { | |
6ff9897d | 3208 | thislen = min_t(long, len, PAGE_SIZE); |
b0420980 BF |
3209 | p = xdr_reserve_space(xdr, (thislen+3)&~3); |
3210 | WARN_ON_ONCE(!p); | |
3211 | resp->rqstp->rq_vec[v].iov_base = p; | |
6ff9897d | 3212 | resp->rqstp->rq_vec[v].iov_len = thislen; |
1da177e4 | 3213 | v++; |
6ff9897d | 3214 | len -= thislen; |
1da177e4 LT |
3215 | } |
3216 | read->rd_vlen = v; | |
3217 | ||
dc97618d BF |
3218 | nfserr = nfsd_readv(file, read->rd_offset, resp->rqstp->rq_vec, |
3219 | read->rd_vlen, &maxcount); | |
3220 | if (nfserr) | |
1da177e4 | 3221 | return nfserr; |
b0420980 | 3222 | xdr_truncate_encode(xdr, starting_len + 8 + ((maxcount+3)&~3)); |
dc97618d | 3223 | |
44524359 N |
3224 | eof = (read->rd_offset + maxcount >= |
3225 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 | 3226 | |
dc97618d BF |
3227 | tmp = htonl(eof); |
3228 | write_bytes_to_xdr_buf(xdr->buf, starting_len , &tmp, 4); | |
3229 | tmp = htonl(maxcount); | |
3230 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 4, &tmp, 4); | |
3231 | ||
b0420980 BF |
3232 | pad = (maxcount&3) ? 4 - (maxcount&3) : 0; |
3233 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 8 + maxcount, | |
3234 | &zzz, pad); | |
1da177e4 | 3235 | return 0; |
dc97618d BF |
3236 | |
3237 | } | |
3238 | ||
3239 | static __be32 | |
3240 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3241 | struct nfsd4_read *read) | |
3242 | { | |
3243 | unsigned long maxcount; | |
3244 | struct xdr_stream *xdr = &resp->xdr; | |
3245 | struct file *file = read->rd_filp; | |
3246 | int starting_len = xdr->buf->len; | |
3247 | struct raparms *ra; | |
3248 | __be32 *p; | |
3249 | __be32 err; | |
3250 | ||
3251 | if (nfserr) | |
3252 | return nfserr; | |
3253 | ||
3254 | p = xdr_reserve_space(xdr, 8); /* eof flag and byte count */ | |
3255 | if (!p) { | |
779fb0f3 | 3256 | WARN_ON_ONCE(test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)); |
dc97618d BF |
3257 | return nfserr_resource; |
3258 | } | |
779fb0f3 | 3259 | if (resp->xdr.buf->page_len && test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) { |
b0420980 | 3260 | WARN_ON_ONCE(1); |
dc97618d BF |
3261 | return nfserr_resource; |
3262 | } | |
dc97618d BF |
3263 | xdr_commit_encode(xdr); |
3264 | ||
3265 | maxcount = svc_max_payload(resp->rqstp); | |
3c7aa15d KM |
3266 | maxcount = min_t(unsigned long, maxcount, (xdr->buf->buflen - xdr->buf->len)); |
3267 | maxcount = min_t(unsigned long, maxcount, read->rd_length); | |
dc97618d BF |
3268 | |
3269 | if (!read->rd_filp) { | |
3270 | err = nfsd_get_tmp_read_open(resp->rqstp, read->rd_fhp, | |
3271 | &file, &ra); | |
3272 | if (err) | |
3273 | goto err_truncate; | |
3274 | } | |
3275 | ||
779fb0f3 | 3276 | if (file->f_op->splice_read && test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) |
dc97618d BF |
3277 | err = nfsd4_encode_splice_read(resp, read, file, maxcount); |
3278 | else | |
3279 | err = nfsd4_encode_readv(resp, read, file, maxcount); | |
3280 | ||
3281 | if (!read->rd_filp) | |
3282 | nfsd_put_tmp_read_open(file, ra); | |
3283 | ||
3284 | err_truncate: | |
3285 | if (err) | |
3286 | xdr_truncate_encode(xdr, starting_len); | |
3287 | return err; | |
1da177e4 LT |
3288 | } |
3289 | ||
b37ad28b AV |
3290 | static __be32 |
3291 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
3292 | { |
3293 | int maxcount; | |
476a7b1f BF |
3294 | __be32 wire_count; |
3295 | int zero = 0; | |
ddd1ea56 | 3296 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3297 | int length_offset = xdr->buf->len; |
bc749ca4 | 3298 | __be32 *p; |
1da177e4 LT |
3299 | |
3300 | if (nfserr) | |
3301 | return nfserr; | |
2825a7f9 BF |
3302 | |
3303 | p = xdr_reserve_space(xdr, 4); | |
3304 | if (!p) | |
3305 | return nfserr_resource; | |
1da177e4 | 3306 | maxcount = PAGE_SIZE; |
d0a381dd | 3307 | |
476a7b1f BF |
3308 | p = xdr_reserve_space(xdr, maxcount); |
3309 | if (!p) | |
4e21ac4b | 3310 | return nfserr_resource; |
1da177e4 LT |
3311 | /* |
3312 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
3313 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
3314 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
3315 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
3316 | */ | |
476a7b1f BF |
3317 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, |
3318 | (char *)p, &maxcount); | |
1da177e4 | 3319 | if (nfserr == nfserr_isdir) |
d3f627c8 BF |
3320 | nfserr = nfserr_inval; |
3321 | if (nfserr) { | |
1fcea5b2 | 3322 | xdr_truncate_encode(xdr, length_offset); |
1da177e4 | 3323 | return nfserr; |
d3f627c8 | 3324 | } |
1da177e4 | 3325 | |
476a7b1f BF |
3326 | wire_count = htonl(maxcount); |
3327 | write_bytes_to_xdr_buf(xdr->buf, length_offset, &wire_count, 4); | |
69bbd9c7 | 3328 | xdr_truncate_encode(xdr, length_offset + 4 + ALIGN(maxcount, 4)); |
476a7b1f BF |
3329 | if (maxcount & 3) |
3330 | write_bytes_to_xdr_buf(xdr->buf, length_offset + 4 + maxcount, | |
3331 | &zero, 4 - (maxcount&3)); | |
1da177e4 LT |
3332 | return 0; |
3333 | } | |
3334 | ||
b37ad28b AV |
3335 | static __be32 |
3336 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
3337 | { |
3338 | int maxcount; | |
561f0ed4 | 3339 | int bytes_left; |
1da177e4 | 3340 | loff_t offset; |
561f0ed4 | 3341 | __be64 wire_offset; |
ddd1ea56 | 3342 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3343 | int starting_len = xdr->buf->len; |
bc749ca4 | 3344 | __be32 *p; |
1da177e4 LT |
3345 | |
3346 | if (nfserr) | |
3347 | return nfserr; | |
1da177e4 | 3348 | |
d0a381dd BF |
3349 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
3350 | if (!p) | |
3351 | return nfserr_resource; | |
1da177e4 LT |
3352 | |
3353 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
c373b0a4 BF |
3354 | *p++ = cpu_to_be32(0); |
3355 | *p++ = cpu_to_be32(0); | |
4aea24b2 BF |
3356 | resp->xdr.buf->head[0].iov_len = ((char *)resp->xdr.p) |
3357 | - (char *)resp->xdr.buf->head[0].iov_base; | |
1da177e4 LT |
3358 | |
3359 | /* | |
561f0ed4 BF |
3360 | * Number of bytes left for directory entries allowing for the |
3361 | * final 8 bytes of the readdir and a following failed op: | |
3362 | */ | |
3363 | bytes_left = xdr->buf->buflen - xdr->buf->len | |
3364 | - COMPOUND_ERR_SLACK_SPACE - 8; | |
3365 | if (bytes_left < 0) { | |
3366 | nfserr = nfserr_resource; | |
3367 | goto err_no_verf; | |
3368 | } | |
3369 | maxcount = min_t(u32, readdir->rd_maxcount, INT_MAX); | |
3370 | /* | |
3371 | * Note the rfc defines rd_maxcount as the size of the | |
3372 | * READDIR4resok structure, which includes the verifier above | |
3373 | * and the 8 bytes encoded at the end of this function: | |
1da177e4 | 3374 | */ |
561f0ed4 BF |
3375 | if (maxcount < 16) { |
3376 | nfserr = nfserr_toosmall; | |
1da177e4 LT |
3377 | goto err_no_verf; |
3378 | } | |
561f0ed4 | 3379 | maxcount = min_t(int, maxcount-16, bytes_left); |
1da177e4 | 3380 | |
aee37764 BF |
3381 | /* RFC 3530 14.2.24 allows us to ignore dircount when it's 0: */ |
3382 | if (!readdir->rd_dircount) | |
3383 | readdir->rd_dircount = INT_MAX; | |
3384 | ||
561f0ed4 BF |
3385 | readdir->xdr = xdr; |
3386 | readdir->rd_maxcount = maxcount; | |
1da177e4 | 3387 | readdir->common.err = 0; |
561f0ed4 | 3388 | readdir->cookie_offset = 0; |
1da177e4 LT |
3389 | |
3390 | offset = readdir->rd_cookie; | |
3391 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
3392 | &offset, | |
3393 | &readdir->common, nfsd4_encode_dirent); | |
3394 | if (nfserr == nfs_ok && | |
3395 | readdir->common.err == nfserr_toosmall && | |
561f0ed4 BF |
3396 | xdr->buf->len == starting_len + 8) { |
3397 | /* nothing encoded; which limit did we hit?: */ | |
3398 | if (maxcount - 16 < bytes_left) | |
3399 | /* It was the fault of rd_maxcount: */ | |
3400 | nfserr = nfserr_toosmall; | |
3401 | else | |
3402 | /* We ran out of buffer space: */ | |
3403 | nfserr = nfserr_resource; | |
3404 | } | |
1da177e4 LT |
3405 | if (nfserr) |
3406 | goto err_no_verf; | |
3407 | ||
561f0ed4 BF |
3408 | if (readdir->cookie_offset) { |
3409 | wire_offset = cpu_to_be64(offset); | |
3410 | write_bytes_to_xdr_buf(xdr->buf, readdir->cookie_offset, | |
3411 | &wire_offset, 8); | |
3412 | } | |
1da177e4 | 3413 | |
561f0ed4 BF |
3414 | p = xdr_reserve_space(xdr, 8); |
3415 | if (!p) { | |
3416 | WARN_ON_ONCE(1); | |
3417 | goto err_no_verf; | |
3418 | } | |
1da177e4 LT |
3419 | *p++ = 0; /* no more entries */ |
3420 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
1da177e4 LT |
3421 | |
3422 | return 0; | |
3423 | err_no_verf: | |
1fcea5b2 | 3424 | xdr_truncate_encode(xdr, starting_len); |
1da177e4 LT |
3425 | return nfserr; |
3426 | } | |
3427 | ||
695e12f8 | 3428 | static __be32 |
b37ad28b | 3429 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 3430 | { |
d0a381dd | 3431 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3432 | __be32 *p; |
1da177e4 LT |
3433 | |
3434 | if (!nfserr) { | |
d0a381dd BF |
3435 | p = xdr_reserve_space(xdr, 20); |
3436 | if (!p) | |
3437 | return nfserr_resource; | |
d05d5744 | 3438 | p = encode_cinfo(p, &remove->rm_cinfo); |
1da177e4 | 3439 | } |
695e12f8 | 3440 | return nfserr; |
1da177e4 LT |
3441 | } |
3442 | ||
695e12f8 | 3443 | static __be32 |
b37ad28b | 3444 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 3445 | { |
d0a381dd | 3446 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3447 | __be32 *p; |
1da177e4 LT |
3448 | |
3449 | if (!nfserr) { | |
d0a381dd BF |
3450 | p = xdr_reserve_space(xdr, 40); |
3451 | if (!p) | |
3452 | return nfserr_resource; | |
d05d5744 BF |
3453 | p = encode_cinfo(p, &rename->rn_sinfo); |
3454 | p = encode_cinfo(p, &rename->rn_tinfo); | |
1da177e4 | 3455 | } |
695e12f8 | 3456 | return nfserr; |
1da177e4 LT |
3457 | } |
3458 | ||
695e12f8 | 3459 | static __be32 |
d0a381dd | 3460 | nfsd4_do_encode_secinfo(struct xdr_stream *xdr, |
a77c806f | 3461 | __be32 nfserr, struct svc_export *exp) |
dcb488a3 | 3462 | { |
676e4ebd | 3463 | u32 i, nflavs, supported; |
4796f457 BF |
3464 | struct exp_flavor_info *flavs; |
3465 | struct exp_flavor_info def_flavs[2]; | |
676e4ebd CL |
3466 | __be32 *p, *flavorsp; |
3467 | static bool report = true; | |
dcb488a3 AA |
3468 | |
3469 | if (nfserr) | |
3470 | goto out; | |
d0a381dd | 3471 | nfserr = nfserr_resource; |
4796f457 BF |
3472 | if (exp->ex_nflavors) { |
3473 | flavs = exp->ex_flavors; | |
3474 | nflavs = exp->ex_nflavors; | |
3475 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
3476 | flavs = def_flavs; | |
3477 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
3478 | nflavs = 2; | |
3479 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
3480 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
3481 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
3482 | nflavs = 1; | |
3483 | flavs[0].pseudoflavor | |
3484 | = svcauth_gss_flavor(exp->ex_client); | |
3485 | } else { | |
3486 | nflavs = 1; | |
3487 | flavs[0].pseudoflavor | |
3488 | = exp->ex_client->flavour->flavour; | |
3489 | } | |
3490 | } | |
3491 | ||
676e4ebd | 3492 | supported = 0; |
d0a381dd BF |
3493 | p = xdr_reserve_space(xdr, 4); |
3494 | if (!p) | |
3495 | goto out; | |
676e4ebd | 3496 | flavorsp = p++; /* to be backfilled later */ |
676e4ebd | 3497 | |
4796f457 | 3498 | for (i = 0; i < nflavs; i++) { |
676e4ebd | 3499 | rpc_authflavor_t pf = flavs[i].pseudoflavor; |
a77c806f | 3500 | struct rpcsec_gss_info info; |
dcb488a3 | 3501 | |
676e4ebd CL |
3502 | if (rpcauth_get_gssinfo(pf, &info) == 0) { |
3503 | supported++; | |
d0a381dd BF |
3504 | p = xdr_reserve_space(xdr, 4 + 4 + |
3505 | XDR_LEN(info.oid.len) + 4 + 4); | |
3506 | if (!p) | |
3507 | goto out; | |
c373b0a4 | 3508 | *p++ = cpu_to_be32(RPC_AUTH_GSS); |
0c0c267b | 3509 | p = xdr_encode_opaque(p, info.oid.data, info.oid.len); |
c373b0a4 BF |
3510 | *p++ = cpu_to_be32(info.qop); |
3511 | *p++ = cpu_to_be32(info.service); | |
676e4ebd CL |
3512 | } else if (pf < RPC_AUTH_MAXFLAVOR) { |
3513 | supported++; | |
d0a381dd BF |
3514 | p = xdr_reserve_space(xdr, 4); |
3515 | if (!p) | |
3516 | goto out; | |
c373b0a4 | 3517 | *p++ = cpu_to_be32(pf); |
676e4ebd CL |
3518 | } else { |
3519 | if (report) | |
3520 | pr_warn("NFS: SECINFO: security flavor %u " | |
3521 | "is not supported\n", pf); | |
dcb488a3 AA |
3522 | } |
3523 | } | |
a77c806f | 3524 | |
676e4ebd CL |
3525 | if (nflavs != supported) |
3526 | report = false; | |
3527 | *flavorsp = htonl(supported); | |
d0a381dd | 3528 | nfserr = 0; |
dcb488a3 AA |
3529 | out: |
3530 | if (exp) | |
3531 | exp_put(exp); | |
695e12f8 | 3532 | return nfserr; |
dcb488a3 AA |
3533 | } |
3534 | ||
22b6dee8 MJ |
3535 | static __be32 |
3536 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3537 | struct nfsd4_secinfo *secinfo) | |
3538 | { | |
d0a381dd BF |
3539 | struct xdr_stream *xdr = &resp->xdr; |
3540 | ||
3541 | return nfsd4_do_encode_secinfo(xdr, nfserr, secinfo->si_exp); | |
22b6dee8 MJ |
3542 | } |
3543 | ||
3544 | static __be32 | |
3545 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3546 | struct nfsd4_secinfo_no_name *secinfo) | |
3547 | { | |
d0a381dd BF |
3548 | struct xdr_stream *xdr = &resp->xdr; |
3549 | ||
3550 | return nfsd4_do_encode_secinfo(xdr, nfserr, secinfo->sin_exp); | |
22b6dee8 MJ |
3551 | } |
3552 | ||
1da177e4 LT |
3553 | /* |
3554 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
3555 | * regardless of the error status. | |
3556 | */ | |
695e12f8 | 3557 | static __be32 |
b37ad28b | 3558 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 3559 | { |
d0a381dd | 3560 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3561 | __be32 *p; |
1da177e4 | 3562 | |
d0a381dd BF |
3563 | p = xdr_reserve_space(xdr, 16); |
3564 | if (!p) | |
3565 | return nfserr_resource; | |
1da177e4 | 3566 | if (nfserr) { |
c373b0a4 BF |
3567 | *p++ = cpu_to_be32(3); |
3568 | *p++ = cpu_to_be32(0); | |
3569 | *p++ = cpu_to_be32(0); | |
3570 | *p++ = cpu_to_be32(0); | |
1da177e4 LT |
3571 | } |
3572 | else { | |
c373b0a4 BF |
3573 | *p++ = cpu_to_be32(3); |
3574 | *p++ = cpu_to_be32(setattr->sa_bmval[0]); | |
3575 | *p++ = cpu_to_be32(setattr->sa_bmval[1]); | |
3576 | *p++ = cpu_to_be32(setattr->sa_bmval[2]); | |
1da177e4 | 3577 | } |
695e12f8 | 3578 | return nfserr; |
1da177e4 LT |
3579 | } |
3580 | ||
695e12f8 | 3581 | static __be32 |
b37ad28b | 3582 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 3583 | { |
d0a381dd | 3584 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3585 | __be32 *p; |
1da177e4 LT |
3586 | |
3587 | if (!nfserr) { | |
d0a381dd BF |
3588 | p = xdr_reserve_space(xdr, 8 + NFS4_VERIFIER_SIZE); |
3589 | if (!p) | |
3590 | return nfserr_resource; | |
0c0c267b BF |
3591 | p = xdr_encode_opaque_fixed(p, &scd->se_clientid, 8); |
3592 | p = xdr_encode_opaque_fixed(p, &scd->se_confirm, | |
3593 | NFS4_VERIFIER_SIZE); | |
1da177e4 LT |
3594 | } |
3595 | else if (nfserr == nfserr_clid_inuse) { | |
d0a381dd BF |
3596 | p = xdr_reserve_space(xdr, 8); |
3597 | if (!p) | |
3598 | return nfserr_resource; | |
c373b0a4 BF |
3599 | *p++ = cpu_to_be32(0); |
3600 | *p++ = cpu_to_be32(0); | |
1da177e4 | 3601 | } |
695e12f8 | 3602 | return nfserr; |
1da177e4 LT |
3603 | } |
3604 | ||
695e12f8 | 3605 | static __be32 |
b37ad28b | 3606 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 3607 | { |
d0a381dd | 3608 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3609 | __be32 *p; |
1da177e4 LT |
3610 | |
3611 | if (!nfserr) { | |
d0a381dd BF |
3612 | p = xdr_reserve_space(xdr, 16); |
3613 | if (!p) | |
3614 | return nfserr_resource; | |
c373b0a4 BF |
3615 | *p++ = cpu_to_be32(write->wr_bytes_written); |
3616 | *p++ = cpu_to_be32(write->wr_how_written); | |
0c0c267b BF |
3617 | p = xdr_encode_opaque_fixed(p, write->wr_verifier.data, |
3618 | NFS4_VERIFIER_SIZE); | |
1da177e4 | 3619 | } |
695e12f8 | 3620 | return nfserr; |
1da177e4 LT |
3621 | } |
3622 | ||
57266a6e BF |
3623 | static const u32 nfs4_minimal_spo_must_enforce[2] = { |
3624 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
3625 | 1 << (OP_EXCHANGE_ID - 32) | | |
3626 | 1 << (OP_CREATE_SESSION - 32) | | |
3627 | 1 << (OP_DESTROY_SESSION - 32) | | |
3628 | 1 << (OP_DESTROY_CLIENTID - 32) | |
3629 | }; | |
3630 | ||
2db134eb | 3631 | static __be32 |
57b7b43b | 3632 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3633 | struct nfsd4_exchange_id *exid) |
3634 | { | |
d0a381dd | 3635 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3636 | __be32 *p; |
0733d213 AA |
3637 | char *major_id; |
3638 | char *server_scope; | |
3639 | int major_id_sz; | |
3640 | int server_scope_sz; | |
3641 | uint64_t minor_id = 0; | |
3642 | ||
3643 | if (nfserr) | |
3644 | return nfserr; | |
3645 | ||
3646 | major_id = utsname()->nodename; | |
3647 | major_id_sz = strlen(major_id); | |
3648 | server_scope = utsname()->nodename; | |
3649 | server_scope_sz = strlen(server_scope); | |
3650 | ||
d0a381dd | 3651 | p = xdr_reserve_space(xdr, |
0733d213 AA |
3652 | 8 /* eir_clientid */ + |
3653 | 4 /* eir_sequenceid */ + | |
3654 | 4 /* eir_flags */ + | |
a8bb84bc | 3655 | 4 /* spr_how */); |
d0a381dd BF |
3656 | if (!p) |
3657 | return nfserr_resource; | |
0733d213 | 3658 | |
0c0c267b | 3659 | p = xdr_encode_opaque_fixed(p, &exid->clientid, 8); |
c373b0a4 BF |
3660 | *p++ = cpu_to_be32(exid->seqid); |
3661 | *p++ = cpu_to_be32(exid->flags); | |
0733d213 | 3662 | |
c373b0a4 | 3663 | *p++ = cpu_to_be32(exid->spa_how); |
a8bb84bc | 3664 | |
57266a6e BF |
3665 | switch (exid->spa_how) { |
3666 | case SP4_NONE: | |
3667 | break; | |
3668 | case SP4_MACH_CRED: | |
a8bb84bc | 3669 | /* spo_must_enforce, spo_must_allow */ |
d0a381dd BF |
3670 | p = xdr_reserve_space(xdr, 16); |
3671 | if (!p) | |
3672 | return nfserr_resource; | |
a8bb84bc | 3673 | |
57266a6e | 3674 | /* spo_must_enforce bitmap: */ |
c373b0a4 BF |
3675 | *p++ = cpu_to_be32(2); |
3676 | *p++ = cpu_to_be32(nfs4_minimal_spo_must_enforce[0]); | |
3677 | *p++ = cpu_to_be32(nfs4_minimal_spo_must_enforce[1]); | |
57266a6e | 3678 | /* empty spo_must_allow bitmap: */ |
c373b0a4 | 3679 | *p++ = cpu_to_be32(0); |
a8bb84bc | 3680 | |
57266a6e BF |
3681 | break; |
3682 | default: | |
3683 | WARN_ON_ONCE(1); | |
3684 | } | |
0733d213 | 3685 | |
d0a381dd | 3686 | p = xdr_reserve_space(xdr, |
a8bb84bc KM |
3687 | 8 /* so_minor_id */ + |
3688 | 4 /* so_major_id.len */ + | |
3689 | (XDR_QUADLEN(major_id_sz) * 4) + | |
3690 | 4 /* eir_server_scope.len */ + | |
3691 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
3692 | 4 /* eir_server_impl_id.count (0) */); | |
d0a381dd BF |
3693 | if (!p) |
3694 | return nfserr_resource; | |
a8bb84bc | 3695 | |
0733d213 | 3696 | /* The server_owner struct */ |
b64c7f3b | 3697 | p = xdr_encode_hyper(p, minor_id); /* Minor id */ |
0733d213 | 3698 | /* major id */ |
0c0c267b | 3699 | p = xdr_encode_opaque(p, major_id, major_id_sz); |
0733d213 AA |
3700 | |
3701 | /* Server scope */ | |
0c0c267b | 3702 | p = xdr_encode_opaque(p, server_scope, server_scope_sz); |
0733d213 AA |
3703 | |
3704 | /* Implementation id */ | |
c373b0a4 | 3705 | *p++ = cpu_to_be32(0); /* zero length nfs_impl_id4 array */ |
0733d213 | 3706 | return 0; |
2db134eb AA |
3707 | } |
3708 | ||
3709 | static __be32 | |
57b7b43b | 3710 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3711 | struct nfsd4_create_session *sess) |
3712 | { | |
d0a381dd | 3713 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3714 | __be32 *p; |
ec6b5d7b AA |
3715 | |
3716 | if (nfserr) | |
3717 | return nfserr; | |
3718 | ||
d0a381dd BF |
3719 | p = xdr_reserve_space(xdr, 24); |
3720 | if (!p) | |
3721 | return nfserr_resource; | |
0c0c267b BF |
3722 | p = xdr_encode_opaque_fixed(p, sess->sessionid.data, |
3723 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
3724 | *p++ = cpu_to_be32(sess->seqid); |
3725 | *p++ = cpu_to_be32(sess->flags); | |
ec6b5d7b | 3726 | |
d0a381dd BF |
3727 | p = xdr_reserve_space(xdr, 28); |
3728 | if (!p) | |
3729 | return nfserr_resource; | |
c373b0a4 BF |
3730 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
3731 | *p++ = cpu_to_be32(sess->fore_channel.maxreq_sz); | |
3732 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_sz); | |
3733 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_cached); | |
3734 | *p++ = cpu_to_be32(sess->fore_channel.maxops); | |
3735 | *p++ = cpu_to_be32(sess->fore_channel.maxreqs); | |
3736 | *p++ = cpu_to_be32(sess->fore_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
3737 | |
3738 | if (sess->fore_channel.nr_rdma_attrs) { | |
d0a381dd BF |
3739 | p = xdr_reserve_space(xdr, 4); |
3740 | if (!p) | |
3741 | return nfserr_resource; | |
c373b0a4 | 3742 | *p++ = cpu_to_be32(sess->fore_channel.rdma_attrs); |
ec6b5d7b AA |
3743 | } |
3744 | ||
d0a381dd BF |
3745 | p = xdr_reserve_space(xdr, 28); |
3746 | if (!p) | |
3747 | return nfserr_resource; | |
c373b0a4 BF |
3748 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
3749 | *p++ = cpu_to_be32(sess->back_channel.maxreq_sz); | |
3750 | *p++ = cpu_to_be32(sess->back_channel.maxresp_sz); | |
3751 | *p++ = cpu_to_be32(sess->back_channel.maxresp_cached); | |
3752 | *p++ = cpu_to_be32(sess->back_channel.maxops); | |
3753 | *p++ = cpu_to_be32(sess->back_channel.maxreqs); | |
3754 | *p++ = cpu_to_be32(sess->back_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
3755 | |
3756 | if (sess->back_channel.nr_rdma_attrs) { | |
d0a381dd BF |
3757 | p = xdr_reserve_space(xdr, 4); |
3758 | if (!p) | |
3759 | return nfserr_resource; | |
c373b0a4 | 3760 | *p++ = cpu_to_be32(sess->back_channel.rdma_attrs); |
ec6b5d7b AA |
3761 | } |
3762 | return 0; | |
2db134eb AA |
3763 | } |
3764 | ||
c47d832b | 3765 | static __be32 |
57b7b43b | 3766 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3767 | struct nfsd4_sequence *seq) |
3768 | { | |
d0a381dd | 3769 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3770 | __be32 *p; |
b85d4c01 BH |
3771 | |
3772 | if (nfserr) | |
3773 | return nfserr; | |
3774 | ||
d0a381dd BF |
3775 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 20); |
3776 | if (!p) | |
3777 | return nfserr_resource; | |
0c0c267b BF |
3778 | p = xdr_encode_opaque_fixed(p, seq->sessionid.data, |
3779 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
3780 | *p++ = cpu_to_be32(seq->seqid); |
3781 | *p++ = cpu_to_be32(seq->slotid); | |
b7d7ca35 | 3782 | /* Note slotid's are numbered from zero: */ |
c373b0a4 BF |
3783 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_highest_slotid */ |
3784 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_target_highest_slotid */ | |
3785 | *p++ = cpu_to_be32(seq->status_flags); | |
b85d4c01 | 3786 | |
f5236013 | 3787 | resp->cstate.data_offset = xdr->buf->len; /* DRC cache data pointer */ |
b85d4c01 | 3788 | return 0; |
2db134eb AA |
3789 | } |
3790 | ||
2355c596 | 3791 | static __be32 |
57b7b43b | 3792 | nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
17456804 BS |
3793 | struct nfsd4_test_stateid *test_stateid) |
3794 | { | |
d0a381dd | 3795 | struct xdr_stream *xdr = &resp->xdr; |
03cfb420 | 3796 | struct nfsd4_test_stateid_id *stateid, *next; |
17456804 | 3797 | __be32 *p; |
17456804 | 3798 | |
a11fcce1 BF |
3799 | if (nfserr) |
3800 | return nfserr; | |
3801 | ||
d0a381dd BF |
3802 | p = xdr_reserve_space(xdr, 4 + (4 * test_stateid->ts_num_ids)); |
3803 | if (!p) | |
3804 | return nfserr_resource; | |
17456804 | 3805 | *p++ = htonl(test_stateid->ts_num_ids); |
17456804 | 3806 | |
03cfb420 | 3807 | list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) { |
02f5fde5 | 3808 | *p++ = stateid->ts_id_status; |
17456804 | 3809 | } |
17456804 BS |
3810 | |
3811 | return nfserr; | |
3812 | } | |
3813 | ||
24bab491 AS |
3814 | static __be32 |
3815 | nfsd4_encode_seek(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3816 | struct nfsd4_seek *seek) | |
3817 | { | |
3818 | __be32 *p; | |
3819 | ||
3820 | if (nfserr) | |
3821 | return nfserr; | |
3822 | ||
3823 | p = xdr_reserve_space(&resp->xdr, 4 + 8); | |
3824 | *p++ = cpu_to_be32(seek->seek_eof); | |
3825 | p = xdr_encode_hyper(p, seek->seek_pos); | |
3826 | ||
3827 | return nfserr; | |
3828 | } | |
3829 | ||
695e12f8 BH |
3830 | static __be32 |
3831 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
3832 | { | |
3833 | return nfserr; | |
3834 | } | |
3835 | ||
3836 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
3837 | ||
2db134eb AA |
3838 | /* |
3839 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
3840 | * since we don't need to filter out obsolete ops as this is | |
3841 | * done in the decoding phase. | |
3842 | */ | |
695e12f8 | 3843 | static nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
3844 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
3845 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
3846 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
3847 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
3848 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
3849 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
3850 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
3851 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
3852 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
3853 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
3854 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
3855 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
3856 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
3857 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
3858 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3859 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 3860 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
3861 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
3862 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
3863 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3864 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3865 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3866 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
3867 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
3868 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
3869 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
3870 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
3871 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
3872 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3873 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3874 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
3875 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
3876 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
3877 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
3878 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3879 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
3880 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3881 | |
3882 | /* NFSv4.1 operations */ | |
3883 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
1d1bc8f2 | 3884 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
2db134eb AA |
3885 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
3886 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
43212cc7 KM |
3887 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_noop, |
3888 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3889 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3890 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, | |
3891 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
3892 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
3893 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
3894 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
22b6dee8 | 3895 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
2db134eb AA |
3896 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
3897 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
17456804 | 3898 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, |
2db134eb AA |
3899 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3900 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
3901 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
87a15a80 AS |
3902 | |
3903 | /* NFSv4.2 operations */ | |
3904 | [OP_ALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, | |
3905 | [OP_COPY] = (nfsd4_enc)nfsd4_encode_noop, | |
3906 | [OP_COPY_NOTIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3907 | [OP_DEALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, | |
3908 | [OP_IO_ADVISE] = (nfsd4_enc)nfsd4_encode_noop, | |
3909 | [OP_LAYOUTERROR] = (nfsd4_enc)nfsd4_encode_noop, | |
3910 | [OP_LAYOUTSTATS] = (nfsd4_enc)nfsd4_encode_noop, | |
3911 | [OP_OFFLOAD_CANCEL] = (nfsd4_enc)nfsd4_encode_noop, | |
3912 | [OP_OFFLOAD_STATUS] = (nfsd4_enc)nfsd4_encode_noop, | |
3913 | [OP_READ_PLUS] = (nfsd4_enc)nfsd4_encode_noop, | |
24bab491 | 3914 | [OP_SEEK] = (nfsd4_enc)nfsd4_encode_seek, |
87a15a80 | 3915 | [OP_WRITE_SAME] = (nfsd4_enc)nfsd4_encode_noop, |
695e12f8 BH |
3916 | }; |
3917 | ||
496c262c | 3918 | /* |
a8095f7e BF |
3919 | * Calculate whether we still have space to encode repsize bytes. |
3920 | * There are two considerations: | |
3921 | * - For NFS versions >=4.1, the size of the reply must stay within | |
3922 | * session limits | |
3923 | * - For all NFS versions, we must stay within limited preallocated | |
3924 | * buffer space. | |
496c262c | 3925 | * |
a8095f7e BF |
3926 | * This is called before the operation is processed, so can only provide |
3927 | * an upper estimate. For some nonidempotent operations (such as | |
3928 | * getattr), it's not necessarily a problem if that estimate is wrong, | |
3929 | * as we can fail it after processing without significant side effects. | |
496c262c | 3930 | */ |
a8095f7e | 3931 | __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 respsize) |
496c262c | 3932 | { |
67492c99 | 3933 | struct xdr_buf *buf = &resp->rqstp->rq_res; |
47ee5298 | 3934 | struct nfsd4_slot *slot = resp->cstate.slot; |
496c262c | 3935 | |
47ee5298 BF |
3936 | if (buf->len + respsize <= buf->buflen) |
3937 | return nfs_ok; | |
3938 | if (!nfsd4_has_session(&resp->cstate)) | |
ea8d7720 | 3939 | return nfserr_resource; |
47ee5298 BF |
3940 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) { |
3941 | WARN_ON_ONCE(1); | |
3942 | return nfserr_rep_too_big_to_cache; | |
ea8d7720 | 3943 | } |
47ee5298 | 3944 | return nfserr_rep_too_big; |
496c262c AA |
3945 | } |
3946 | ||
1da177e4 LT |
3947 | void |
3948 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3949 | { | |
082d4bd7 | 3950 | struct xdr_stream *xdr = &resp->xdr; |
9411b1d4 | 3951 | struct nfs4_stateowner *so = resp->cstate.replay_owner; |
5f4ab945 | 3952 | struct svc_rqst *rqstp = resp->rqstp; |
082d4bd7 | 3953 | int post_err_offset; |
07d1f802 | 3954 | nfsd4_enc encoder; |
bc749ca4 | 3955 | __be32 *p; |
1da177e4 | 3956 | |
d0a381dd BF |
3957 | p = xdr_reserve_space(xdr, 8); |
3958 | if (!p) { | |
3959 | WARN_ON_ONCE(1); | |
3960 | return; | |
3961 | } | |
c373b0a4 | 3962 | *p++ = cpu_to_be32(op->opnum); |
082d4bd7 | 3963 | post_err_offset = xdr->buf->len; |
1da177e4 | 3964 | |
695e12f8 BH |
3965 | if (op->opnum == OP_ILLEGAL) |
3966 | goto status; | |
3967 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || | |
3968 | !nfsd4_enc_ops[op->opnum]); | |
07d1f802 BF |
3969 | encoder = nfsd4_enc_ops[op->opnum]; |
3970 | op->status = encoder(resp, op->status, &op->u); | |
2825a7f9 BF |
3971 | xdr_commit_encode(xdr); |
3972 | ||
067e1ace | 3973 | /* nfsd4_check_resp_size guarantees enough room for error status */ |
5f4ab945 BF |
3974 | if (!op->status) { |
3975 | int space_needed = 0; | |
3976 | if (!nfsd4_last_compound_op(rqstp)) | |
3977 | space_needed = COMPOUND_ERR_SLACK_SPACE; | |
3978 | op->status = nfsd4_check_resp_size(resp, space_needed); | |
3979 | } | |
c8f13d97 BF |
3980 | if (op->status == nfserr_resource && nfsd4_has_session(&resp->cstate)) { |
3981 | struct nfsd4_slot *slot = resp->cstate.slot; | |
3982 | ||
3983 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) | |
3984 | op->status = nfserr_rep_too_big_to_cache; | |
3985 | else | |
3986 | op->status = nfserr_rep_too_big; | |
3987 | } | |
07d1f802 BF |
3988 | if (op->status == nfserr_resource || |
3989 | op->status == nfserr_rep_too_big || | |
3990 | op->status == nfserr_rep_too_big_to_cache) { | |
3991 | /* | |
3992 | * The operation may have already been encoded or | |
3993 | * partially encoded. No op returns anything additional | |
3994 | * in the case of one of these three errors, so we can | |
3995 | * just truncate back to after the status. But it's a | |
3996 | * bug if we had to do this on a non-idempotent op: | |
3997 | */ | |
3998 | warn_on_nonidempotent_op(op); | |
082d4bd7 | 3999 | xdr_truncate_encode(xdr, post_err_offset); |
07d1f802 | 4000 | } |
9411b1d4 | 4001 | if (so) { |
082d4bd7 BF |
4002 | int len = xdr->buf->len - post_err_offset; |
4003 | ||
9411b1d4 | 4004 | so->so_replay.rp_status = op->status; |
082d4bd7 BF |
4005 | so->so_replay.rp_buflen = len; |
4006 | read_bytes_from_xdr_buf(xdr->buf, post_err_offset, | |
4007 | so->so_replay.rp_buf, len); | |
9411b1d4 | 4008 | } |
695e12f8 | 4009 | status: |
082d4bd7 BF |
4010 | /* Note that op->status is already in network byte order: */ |
4011 | write_bytes_to_xdr_buf(xdr->buf, post_err_offset - 4, &op->status, 4); | |
1da177e4 LT |
4012 | } |
4013 | ||
4014 | /* | |
4015 | * Encode the reply stored in the stateowner reply cache | |
4016 | * | |
4017 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
4018 | * previously sent already encoded operation. | |
1da177e4 LT |
4019 | */ |
4020 | void | |
d0a381dd | 4021 | nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op) |
1da177e4 | 4022 | { |
bc749ca4 | 4023 | __be32 *p; |
1da177e4 LT |
4024 | struct nfs4_replay *rp = op->replay; |
4025 | ||
4026 | BUG_ON(!rp); | |
4027 | ||
d0a381dd BF |
4028 | p = xdr_reserve_space(xdr, 8 + rp->rp_buflen); |
4029 | if (!p) { | |
4030 | WARN_ON_ONCE(1); | |
4031 | return; | |
4032 | } | |
c373b0a4 | 4033 | *p++ = cpu_to_be32(op->opnum); |
1da177e4 | 4034 | *p++ = rp->rp_status; /* already xdr'ed */ |
1da177e4 | 4035 | |
0c0c267b | 4036 | p = xdr_encode_opaque_fixed(p, rp->rp_buf, rp->rp_buflen); |
1da177e4 LT |
4037 | } |
4038 | ||
1da177e4 | 4039 | int |
2ebbc012 | 4040 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
4041 | { |
4042 | return xdr_ressize_check(rqstp, p); | |
4043 | } | |
4044 | ||
3e98abff | 4045 | int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp) |
1da177e4 | 4046 | { |
3e98abff BF |
4047 | struct svc_rqst *rqstp = rq; |
4048 | struct nfsd4_compoundargs *args = rqstp->rq_argp; | |
4049 | ||
1da177e4 LT |
4050 | if (args->ops != args->iops) { |
4051 | kfree(args->ops); | |
4052 | args->ops = args->iops; | |
4053 | } | |
f99d49ad JJ |
4054 | kfree(args->tmpp); |
4055 | args->tmpp = NULL; | |
1da177e4 | 4056 | while (args->to_free) { |
d5e23383 | 4057 | struct svcxdr_tmpbuf *tb = args->to_free; |
1da177e4 | 4058 | args->to_free = tb->next; |
1da177e4 LT |
4059 | kfree(tb); |
4060 | } | |
3e98abff | 4061 | return 1; |
1da177e4 LT |
4062 | } |
4063 | ||
4064 | int | |
2ebbc012 | 4065 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 4066 | { |
e874f9f8 JL |
4067 | if (rqstp->rq_arg.head[0].iov_len % 4) { |
4068 | /* client is nuts */ | |
4069 | dprintk("%s: compound not properly padded! (peeraddr=%pISc xid=0x%x)", | |
4070 | __func__, svc_addr(rqstp), be32_to_cpu(rqstp->rq_xid)); | |
4071 | return 0; | |
4072 | } | |
1da177e4 LT |
4073 | args->p = p; |
4074 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
4075 | args->pagelist = rqstp->rq_arg.pages; | |
4076 | args->pagelen = rqstp->rq_arg.page_len; | |
4077 | args->tmpp = NULL; | |
4078 | args->to_free = NULL; | |
4079 | args->ops = args->iops; | |
4080 | args->rqstp = rqstp; | |
4081 | ||
3e98abff | 4082 | return !nfsd4_decode_compound(args); |
1da177e4 LT |
4083 | } |
4084 | ||
4085 | int | |
2ebbc012 | 4086 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
4087 | { |
4088 | /* | |
4089 | * All that remains is to write the tag and operation count... | |
4090 | */ | |
6ac90391 BF |
4091 | struct xdr_buf *buf = resp->xdr.buf; |
4092 | ||
4093 | WARN_ON_ONCE(buf->len != buf->head[0].iov_len + buf->page_len + | |
4094 | buf->tail[0].iov_len); | |
dd97fdde | 4095 | |
2825a7f9 BF |
4096 | rqstp->rq_next_page = resp->xdr.page_ptr + 1; |
4097 | ||
1da177e4 LT |
4098 | p = resp->tagp; |
4099 | *p++ = htonl(resp->taglen); | |
4100 | memcpy(p, resp->tag, resp->taglen); | |
4101 | p += XDR_QUADLEN(resp->taglen); | |
4102 | *p++ = htonl(resp->opcnt); | |
4103 | ||
b607664e | 4104 | nfsd4_sequence_done(resp); |
1da177e4 LT |
4105 | return 1; |
4106 | } | |
4107 | ||
4108 | /* | |
4109 | * Local variables: | |
4110 | * c-basic-offset: 8 | |
4111 | * End: | |
4112 | */ |