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Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Server-side XDR for NFSv4 |
3 | * | |
4 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Kendrick Smith <kmsmith@umich.edu> | |
8 | * Andy Adamson <andros@umich.edu> | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or without | |
11 | * modification, are permitted provided that the following conditions | |
12 | * are met: | |
13 | * | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions and the following disclaimer. | |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in the | |
18 | * documentation and/or other materials provided with the distribution. | |
19 | * 3. Neither the name of the University nor the names of its | |
20 | * contributors may be used to endorse or promote products derived | |
21 | * from this software without specific prior written permission. | |
22 | * | |
23 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
24 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
25 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
26 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
30 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
31 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
32 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
33 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
34 | * | |
35 | * TODO: Neil Brown made the following observation: We currently | |
36 | * initially reserve NFSD_BUFSIZE space on the transmit queue and | |
37 | * never release any of that until the request is complete. | |
38 | * It would be good to calculate a new maximum response size while | |
39 | * decoding the COMPOUND, and call svc_reserve with this number | |
40 | * at the end of nfs4svc_decode_compoundargs. | |
41 | */ | |
42 | ||
5a0e3ad6 | 43 | #include <linux/slab.h> |
1da177e4 | 44 | #include <linux/namei.h> |
341eb184 | 45 | #include <linux/statfs.h> |
0733d213 | 46 | #include <linux/utsname.h> |
17456804 | 47 | #include <linux/pagemap.h> |
4796f457 | 48 | #include <linux/sunrpc/svcauth_gss.h> |
9a74af21 | 49 | |
2ca72e17 BF |
50 | #include "idmap.h" |
51 | #include "acl.h" | |
9a74af21 | 52 | #include "xdr4.h" |
0a3adade | 53 | #include "vfs.h" |
17456804 | 54 | #include "state.h" |
1091006c | 55 | #include "cache.h" |
3d733711 | 56 | #include "netns.h" |
2ca72e17 | 57 | |
18032ca0 DQ |
58 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
59 | #include <linux/security.h> | |
60 | #endif | |
61 | ||
62 | ||
1da177e4 LT |
63 | #define NFSDDBG_FACILITY NFSDDBG_XDR |
64 | ||
42ca0993 BF |
65 | /* |
66 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing | |
67 | * directory in order to indicate to the client that a filesystem boundary is present | |
68 | * We use a fixed fsid for a referral | |
69 | */ | |
70 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL | |
71 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL | |
72 | ||
b37ad28b | 73 | static __be32 |
a36b1725 | 74 | check_filename(char *str, int len) |
1da177e4 LT |
75 | { |
76 | int i; | |
77 | ||
78 | if (len == 0) | |
79 | return nfserr_inval; | |
80 | if (isdotent(str, len)) | |
a36b1725 | 81 | return nfserr_badname; |
1da177e4 LT |
82 | for (i = 0; i < len; i++) |
83 | if (str[i] == '/') | |
a36b1725 | 84 | return nfserr_badname; |
1da177e4 LT |
85 | return 0; |
86 | } | |
87 | ||
1da177e4 | 88 | #define DECODE_HEAD \ |
2ebbc012 | 89 | __be32 *p; \ |
b37ad28b | 90 | __be32 status |
1da177e4 LT |
91 | #define DECODE_TAIL \ |
92 | status = 0; \ | |
93 | out: \ | |
94 | return status; \ | |
95 | xdr_error: \ | |
817cb9d4 CL |
96 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
97 | __FILE__, __LINE__); \ | |
1da177e4 LT |
98 | status = nfserr_bad_xdr; \ |
99 | goto out | |
100 | ||
1da177e4 LT |
101 | #define READMEM(x,nbytes) do { \ |
102 | x = (char *)p; \ | |
103 | p += XDR_QUADLEN(nbytes); \ | |
104 | } while (0) | |
105 | #define SAVEMEM(x,nbytes) do { \ | |
106 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
107 | savemem(argp, p, nbytes) : \ | |
108 | (char *)p)) { \ | |
817cb9d4 CL |
109 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
110 | __FILE__, __LINE__); \ | |
1da177e4 LT |
111 | goto xdr_error; \ |
112 | } \ | |
113 | p += XDR_QUADLEN(nbytes); \ | |
114 | } while (0) | |
115 | #define COPYMEM(x,nbytes) do { \ | |
116 | memcpy((x), p, nbytes); \ | |
117 | p += XDR_QUADLEN(nbytes); \ | |
118 | } while (0) | |
119 | ||
120 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ | |
121 | #define READ_BUF(nbytes) do { \ | |
122 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ | |
123 | p = argp->p; \ | |
124 | argp->p += XDR_QUADLEN(nbytes); \ | |
125 | } else if (!(p = read_buf(argp, nbytes))) { \ | |
817cb9d4 CL |
126 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
127 | __FILE__, __LINE__); \ | |
1da177e4 LT |
128 | goto xdr_error; \ |
129 | } \ | |
130 | } while (0) | |
131 | ||
590b7431 BF |
132 | static void next_decode_page(struct nfsd4_compoundargs *argp) |
133 | { | |
590b7431 | 134 | argp->p = page_address(argp->pagelist[0]); |
365da4ad | 135 | argp->pagelist++; |
590b7431 BF |
136 | if (argp->pagelen < PAGE_SIZE) { |
137 | argp->end = argp->p + (argp->pagelen>>2); | |
138 | argp->pagelen = 0; | |
139 | } else { | |
140 | argp->end = argp->p + (PAGE_SIZE>>2); | |
141 | argp->pagelen -= PAGE_SIZE; | |
142 | } | |
143 | } | |
144 | ||
ca2a05aa | 145 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
1da177e4 LT |
146 | { |
147 | /* We want more bytes than seem to be available. | |
148 | * Maybe we need a new page, maybe we have just run out | |
149 | */ | |
ca2a05aa | 150 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
2ebbc012 | 151 | __be32 *p; |
1da177e4 LT |
152 | if (avail + argp->pagelen < nbytes) |
153 | return NULL; | |
154 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ | |
155 | return NULL; | |
156 | /* ok, we can do it with the current plus the next page */ | |
157 | if (nbytes <= sizeof(argp->tmp)) | |
158 | p = argp->tmp; | |
159 | else { | |
f99d49ad | 160 | kfree(argp->tmpp); |
1da177e4 LT |
161 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
162 | if (!p) | |
163 | return NULL; | |
164 | ||
165 | } | |
ca2a05aa BF |
166 | /* |
167 | * The following memcpy is safe because read_buf is always | |
168 | * called with nbytes > avail, and the two cases above both | |
169 | * guarantee p points to at least nbytes bytes. | |
170 | */ | |
1da177e4 | 171 | memcpy(p, argp->p, avail); |
590b7431 | 172 | next_decode_page(argp); |
1da177e4 LT |
173 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); |
174 | argp->p += XDR_QUADLEN(nbytes - avail); | |
175 | return p; | |
176 | } | |
177 | ||
60adfc50 AA |
178 | static int zero_clientid(clientid_t *clid) |
179 | { | |
180 | return (clid->cl_boot == 0) && (clid->cl_id == 0); | |
181 | } | |
182 | ||
2d8498db | 183 | /** |
d5e23383 | 184 | * svcxdr_tmpalloc - allocate memory to be freed after compound processing |
ce043ac8 BF |
185 | * @argp: NFSv4 compound argument structure |
186 | * @p: pointer to be freed (with kfree()) | |
2d8498db CH |
187 | * |
188 | * Marks @p to be freed when processing the compound operation | |
189 | * described in @argp finishes. | |
190 | */ | |
d5e23383 BF |
191 | static void * |
192 | svcxdr_tmpalloc(struct nfsd4_compoundargs *argp, u32 len) | |
1da177e4 | 193 | { |
d5e23383 | 194 | struct svcxdr_tmpbuf *tb; |
1da177e4 | 195 | |
d5e23383 | 196 | tb = kmalloc(sizeof(*tb) + len, GFP_KERNEL); |
1da177e4 | 197 | if (!tb) |
d5e23383 | 198 | return NULL; |
1da177e4 LT |
199 | tb->next = argp->to_free; |
200 | argp->to_free = tb; | |
d5e23383 | 201 | return tb->buf; |
1da177e4 LT |
202 | } |
203 | ||
29c353b3 BF |
204 | /* |
205 | * For xdr strings that need to be passed to other kernel api's | |
206 | * as null-terminated strings. | |
207 | * | |
208 | * Note null-terminating in place usually isn't safe since the | |
209 | * buffer might end on a page boundary. | |
210 | */ | |
211 | static char * | |
212 | svcxdr_dupstr(struct nfsd4_compoundargs *argp, void *buf, u32 len) | |
213 | { | |
d5e23383 | 214 | char *p = svcxdr_tmpalloc(argp, len + 1); |
29c353b3 BF |
215 | |
216 | if (!p) | |
217 | return NULL; | |
218 | memcpy(p, buf, len); | |
219 | p[len] = '\0'; | |
29c353b3 BF |
220 | return p; |
221 | } | |
222 | ||
2d8498db CH |
223 | /** |
224 | * savemem - duplicate a chunk of memory for later processing | |
225 | * @argp: NFSv4 compound argument structure to be freed with | |
226 | * @p: pointer to be duplicated | |
227 | * @nbytes: length to be duplicated | |
228 | * | |
229 | * Returns a pointer to a copy of @nbytes bytes of memory at @p | |
230 | * that are preserved until processing of the NFSv4 compound | |
231 | * operation described by @argp finishes. | |
232 | */ | |
2ebbc012 | 233 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
1da177e4 | 234 | { |
d5e23383 BF |
235 | void *ret; |
236 | ||
237 | ret = svcxdr_tmpalloc(argp, nbytes); | |
238 | if (!ret) | |
1da177e4 | 239 | return NULL; |
d5e23383 BF |
240 | memcpy(ret, p, nbytes); |
241 | return ret; | |
1da177e4 LT |
242 | } |
243 | ||
b37ad28b | 244 | static __be32 |
1da177e4 LT |
245 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
246 | { | |
247 | u32 bmlen; | |
248 | DECODE_HEAD; | |
249 | ||
250 | bmval[0] = 0; | |
251 | bmval[1] = 0; | |
7e705706 | 252 | bmval[2] = 0; |
1da177e4 LT |
253 | |
254 | READ_BUF(4); | |
06553991 | 255 | bmlen = be32_to_cpup(p++); |
1da177e4 LT |
256 | if (bmlen > 1000) |
257 | goto xdr_error; | |
258 | ||
259 | READ_BUF(bmlen << 2); | |
260 | if (bmlen > 0) | |
06553991 | 261 | bmval[0] = be32_to_cpup(p++); |
1da177e4 | 262 | if (bmlen > 1) |
06553991 | 263 | bmval[1] = be32_to_cpup(p++); |
7e705706 | 264 | if (bmlen > 2) |
06553991 | 265 | bmval[2] = be32_to_cpup(p++); |
1da177e4 LT |
266 | |
267 | DECODE_TAIL; | |
268 | } | |
269 | ||
b37ad28b | 270 | static __be32 |
3c8e0316 | 271 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, |
18032ca0 DQ |
272 | struct iattr *iattr, struct nfs4_acl **acl, |
273 | struct xdr_netobj *label) | |
1da177e4 LT |
274 | { |
275 | int expected_len, len = 0; | |
276 | u32 dummy32; | |
542d1ab3 | 277 | u64 sec; |
1da177e4 LT |
278 | char *buf; |
279 | ||
280 | DECODE_HEAD; | |
281 | iattr->ia_valid = 0; | |
282 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
283 | return status; | |
284 | ||
1da177e4 | 285 | READ_BUF(4); |
06553991 | 286 | expected_len = be32_to_cpup(p++); |
1da177e4 LT |
287 | |
288 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
289 | READ_BUF(8); | |
290 | len += 8; | |
542d1ab3 | 291 | p = xdr_decode_hyper(p, &iattr->ia_size); |
1da177e4 LT |
292 | iattr->ia_valid |= ATTR_SIZE; |
293 | } | |
294 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
64a817cf | 295 | u32 nace; |
28e05dd8 | 296 | struct nfs4_ace *ace; |
1da177e4 LT |
297 | |
298 | READ_BUF(4); len += 4; | |
06553991 | 299 | nace = be32_to_cpup(p++); |
1da177e4 | 300 | |
28e05dd8 | 301 | if (nace > NFS4_ACL_MAX) |
798df338 | 302 | return nfserr_fbig; |
28e05dd8 | 303 | |
d5e23383 | 304 | *acl = svcxdr_tmpalloc(argp, nfs4_acl_bytes(nace)); |
eba1c99c KM |
305 | if (*acl == NULL) |
306 | return nfserr_jukebox; | |
307 | ||
28e05dd8 BF |
308 | (*acl)->naces = nace; |
309 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { | |
1da177e4 | 310 | READ_BUF(16); len += 16; |
06553991 BF |
311 | ace->type = be32_to_cpup(p++); |
312 | ace->flag = be32_to_cpup(p++); | |
313 | ace->access_mask = be32_to_cpup(p++); | |
314 | dummy32 = be32_to_cpup(p++); | |
1da177e4 LT |
315 | READ_BUF(dummy32); |
316 | len += XDR_QUADLEN(dummy32) << 2; | |
317 | READMEM(buf, dummy32); | |
28e05dd8 | 318 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
3c726023 | 319 | status = nfs_ok; |
28e05dd8 | 320 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ab8e4aee | 321 | ; |
28e05dd8 | 322 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
3c726023 | 323 | status = nfsd_map_name_to_gid(argp->rqstp, |
ab8e4aee | 324 | buf, dummy32, &ace->who_gid); |
1da177e4 | 325 | else |
3c726023 | 326 | status = nfsd_map_name_to_uid(argp->rqstp, |
ab8e4aee | 327 | buf, dummy32, &ace->who_uid); |
3c726023 BF |
328 | if (status) |
329 | return status; | |
1da177e4 LT |
330 | } |
331 | } else | |
332 | *acl = NULL; | |
333 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
334 | READ_BUF(4); | |
335 | len += 4; | |
06553991 | 336 | iattr->ia_mode = be32_to_cpup(p++); |
1da177e4 LT |
337 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); |
338 | iattr->ia_valid |= ATTR_MODE; | |
339 | } | |
340 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
341 | READ_BUF(4); | |
342 | len += 4; | |
06553991 | 343 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
344 | READ_BUF(dummy32); |
345 | len += (XDR_QUADLEN(dummy32) << 2); | |
346 | READMEM(buf, dummy32); | |
47c85291 N |
347 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
348 | return status; | |
1da177e4 LT |
349 | iattr->ia_valid |= ATTR_UID; |
350 | } | |
351 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
352 | READ_BUF(4); | |
353 | len += 4; | |
06553991 | 354 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
355 | READ_BUF(dummy32); |
356 | len += (XDR_QUADLEN(dummy32) << 2); | |
357 | READMEM(buf, dummy32); | |
47c85291 N |
358 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
359 | return status; | |
1da177e4 LT |
360 | iattr->ia_valid |= ATTR_GID; |
361 | } | |
362 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
363 | READ_BUF(4); | |
364 | len += 4; | |
06553991 | 365 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
366 | switch (dummy32) { |
367 | case NFS4_SET_TO_CLIENT_TIME: | |
368 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
369 | all 32 bits of 'nseconds'. */ | |
370 | READ_BUF(12); | |
371 | len += 12; | |
542d1ab3 BF |
372 | p = xdr_decode_hyper(p, &sec); |
373 | iattr->ia_atime.tv_sec = (time_t)sec; | |
06553991 | 374 | iattr->ia_atime.tv_nsec = be32_to_cpup(p++); |
1da177e4 LT |
375 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) |
376 | return nfserr_inval; | |
377 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); | |
378 | break; | |
379 | case NFS4_SET_TO_SERVER_TIME: | |
380 | iattr->ia_valid |= ATTR_ATIME; | |
381 | break; | |
382 | default: | |
383 | goto xdr_error; | |
384 | } | |
385 | } | |
1da177e4 LT |
386 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
387 | READ_BUF(4); | |
388 | len += 4; | |
06553991 | 389 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
390 | switch (dummy32) { |
391 | case NFS4_SET_TO_CLIENT_TIME: | |
392 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
393 | all 32 bits of 'nseconds'. */ | |
394 | READ_BUF(12); | |
395 | len += 12; | |
542d1ab3 BF |
396 | p = xdr_decode_hyper(p, &sec); |
397 | iattr->ia_mtime.tv_sec = sec; | |
06553991 | 398 | iattr->ia_mtime.tv_nsec = be32_to_cpup(p++); |
1da177e4 LT |
399 | if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) |
400 | return nfserr_inval; | |
401 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); | |
402 | break; | |
403 | case NFS4_SET_TO_SERVER_TIME: | |
404 | iattr->ia_valid |= ATTR_MTIME; | |
405 | break; | |
406 | default: | |
407 | goto xdr_error; | |
408 | } | |
409 | } | |
18032ca0 DQ |
410 | |
411 | label->len = 0; | |
412 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL | |
413 | if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) { | |
414 | READ_BUF(4); | |
415 | len += 4; | |
06553991 | 416 | dummy32 = be32_to_cpup(p++); /* lfs: we don't use it */ |
18032ca0 DQ |
417 | READ_BUF(4); |
418 | len += 4; | |
06553991 | 419 | dummy32 = be32_to_cpup(p++); /* pi: we don't use it either */ |
18032ca0 DQ |
420 | READ_BUF(4); |
421 | len += 4; | |
06553991 | 422 | dummy32 = be32_to_cpup(p++); |
18032ca0 DQ |
423 | READ_BUF(dummy32); |
424 | if (dummy32 > NFSD4_MAX_SEC_LABEL_LEN) | |
425 | return nfserr_badlabel; | |
426 | len += (XDR_QUADLEN(dummy32) << 2); | |
427 | READMEM(buf, dummy32); | |
29c353b3 BF |
428 | label->len = dummy32; |
429 | label->data = svcxdr_dupstr(argp, buf, dummy32); | |
18032ca0 DQ |
430 | if (!label->data) |
431 | return nfserr_jukebox; | |
18032ca0 DQ |
432 | } |
433 | #endif | |
434 | ||
3c8e0316 YZ |
435 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
436 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 | |
437 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) | |
438 | READ_BUF(expected_len - len); | |
439 | else if (len != expected_len) | |
1da177e4 LT |
440 | goto xdr_error; |
441 | ||
442 | DECODE_TAIL; | |
1da177e4 LT |
443 | } |
444 | ||
e31a1b66 BH |
445 | static __be32 |
446 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
447 | { | |
448 | DECODE_HEAD; | |
449 | ||
450 | READ_BUF(sizeof(stateid_t)); | |
06553991 | 451 | sid->si_generation = be32_to_cpup(p++); |
e31a1b66 BH |
452 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); |
453 | ||
454 | DECODE_TAIL; | |
455 | } | |
456 | ||
b37ad28b | 457 | static __be32 |
1da177e4 LT |
458 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
459 | { | |
460 | DECODE_HEAD; | |
461 | ||
462 | READ_BUF(4); | |
06553991 | 463 | access->ac_req_access = be32_to_cpup(p++); |
1da177e4 LT |
464 | |
465 | DECODE_TAIL; | |
466 | } | |
467 | ||
acb2887e BF |
468 | static __be32 nfsd4_decode_cb_sec(struct nfsd4_compoundargs *argp, struct nfsd4_cb_sec *cbs) |
469 | { | |
470 | DECODE_HEAD; | |
12fc3e92 | 471 | u32 dummy, uid, gid; |
acb2887e BF |
472 | char *machine_name; |
473 | int i; | |
474 | int nr_secflavs; | |
475 | ||
476 | /* callback_sec_params4 */ | |
477 | READ_BUF(4); | |
06553991 | 478 | nr_secflavs = be32_to_cpup(p++); |
57569a70 BF |
479 | if (nr_secflavs) |
480 | cbs->flavor = (u32)(-1); | |
481 | else | |
482 | /* Is this legal? Be generous, take it to mean AUTH_NONE: */ | |
483 | cbs->flavor = 0; | |
acb2887e BF |
484 | for (i = 0; i < nr_secflavs; ++i) { |
485 | READ_BUF(4); | |
06553991 | 486 | dummy = be32_to_cpup(p++); |
acb2887e BF |
487 | switch (dummy) { |
488 | case RPC_AUTH_NULL: | |
489 | /* Nothing to read */ | |
12fc3e92 BF |
490 | if (cbs->flavor == (u32)(-1)) |
491 | cbs->flavor = RPC_AUTH_NULL; | |
acb2887e BF |
492 | break; |
493 | case RPC_AUTH_UNIX: | |
494 | READ_BUF(8); | |
495 | /* stamp */ | |
06553991 | 496 | dummy = be32_to_cpup(p++); |
acb2887e BF |
497 | |
498 | /* machine name */ | |
06553991 | 499 | dummy = be32_to_cpup(p++); |
acb2887e BF |
500 | READ_BUF(dummy); |
501 | SAVEMEM(machine_name, dummy); | |
502 | ||
503 | /* uid, gid */ | |
504 | READ_BUF(8); | |
06553991 BF |
505 | uid = be32_to_cpup(p++); |
506 | gid = be32_to_cpup(p++); | |
acb2887e BF |
507 | |
508 | /* more gids */ | |
509 | READ_BUF(4); | |
06553991 | 510 | dummy = be32_to_cpup(p++); |
acb2887e | 511 | READ_BUF(dummy * 4); |
12fc3e92 | 512 | if (cbs->flavor == (u32)(-1)) { |
03bc6d1c EB |
513 | kuid_t kuid = make_kuid(&init_user_ns, uid); |
514 | kgid_t kgid = make_kgid(&init_user_ns, gid); | |
515 | if (uid_valid(kuid) && gid_valid(kgid)) { | |
516 | cbs->uid = kuid; | |
517 | cbs->gid = kgid; | |
518 | cbs->flavor = RPC_AUTH_UNIX; | |
519 | } else { | |
520 | dprintk("RPC_AUTH_UNIX with invalid" | |
521 | "uid or gid ignoring!\n"); | |
522 | } | |
12fc3e92 | 523 | } |
acb2887e BF |
524 | break; |
525 | case RPC_AUTH_GSS: | |
526 | dprintk("RPC_AUTH_GSS callback secflavor " | |
527 | "not supported!\n"); | |
528 | READ_BUF(8); | |
529 | /* gcbp_service */ | |
06553991 | 530 | dummy = be32_to_cpup(p++); |
acb2887e | 531 | /* gcbp_handle_from_server */ |
06553991 | 532 | dummy = be32_to_cpup(p++); |
acb2887e BF |
533 | READ_BUF(dummy); |
534 | p += XDR_QUADLEN(dummy); | |
535 | /* gcbp_handle_from_client */ | |
536 | READ_BUF(4); | |
06553991 | 537 | dummy = be32_to_cpup(p++); |
acb2887e BF |
538 | READ_BUF(dummy); |
539 | break; | |
540 | default: | |
541 | dprintk("Illegal callback secflavor\n"); | |
542 | return nfserr_inval; | |
543 | } | |
544 | } | |
545 | DECODE_TAIL; | |
546 | } | |
547 | ||
cb73a9f4 BF |
548 | static __be32 nfsd4_decode_backchannel_ctl(struct nfsd4_compoundargs *argp, struct nfsd4_backchannel_ctl *bc) |
549 | { | |
550 | DECODE_HEAD; | |
551 | ||
552 | READ_BUF(4); | |
06553991 | 553 | bc->bc_cb_program = be32_to_cpup(p++); |
cb73a9f4 BF |
554 | nfsd4_decode_cb_sec(argp, &bc->bc_cb_sec); |
555 | ||
556 | DECODE_TAIL; | |
557 | } | |
558 | ||
1d1bc8f2 BF |
559 | static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) |
560 | { | |
561 | DECODE_HEAD; | |
1d1bc8f2 BF |
562 | |
563 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 8); | |
564 | COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
06553991 | 565 | bcts->dir = be32_to_cpup(p++); |
6ce2357f BS |
566 | /* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker |
567 | * could help us figure out we should be using it. */ | |
1d1bc8f2 BF |
568 | DECODE_TAIL; |
569 | } | |
570 | ||
b37ad28b | 571 | static __be32 |
1da177e4 LT |
572 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
573 | { | |
574 | DECODE_HEAD; | |
575 | ||
e31a1b66 | 576 | READ_BUF(4); |
06553991 | 577 | close->cl_seqid = be32_to_cpup(p++); |
e31a1b66 | 578 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
1da177e4 LT |
579 | |
580 | DECODE_TAIL; | |
581 | } | |
582 | ||
583 | ||
b37ad28b | 584 | static __be32 |
1da177e4 LT |
585 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
586 | { | |
587 | DECODE_HEAD; | |
588 | ||
589 | READ_BUF(12); | |
542d1ab3 | 590 | p = xdr_decode_hyper(p, &commit->co_offset); |
06553991 | 591 | commit->co_count = be32_to_cpup(p++); |
1da177e4 LT |
592 | |
593 | DECODE_TAIL; | |
594 | } | |
595 | ||
b37ad28b | 596 | static __be32 |
1da177e4 LT |
597 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
598 | { | |
599 | DECODE_HEAD; | |
600 | ||
601 | READ_BUF(4); | |
06553991 | 602 | create->cr_type = be32_to_cpup(p++); |
1da177e4 LT |
603 | switch (create->cr_type) { |
604 | case NF4LNK: | |
605 | READ_BUF(4); | |
7fb84306 BF |
606 | create->cr_datalen = be32_to_cpup(p++); |
607 | READ_BUF(create->cr_datalen); | |
29c353b3 | 608 | create->cr_data = svcxdr_dupstr(argp, p, create->cr_datalen); |
7fb84306 | 609 | if (!create->cr_data) |
b829e919 | 610 | return nfserr_jukebox; |
1da177e4 LT |
611 | break; |
612 | case NF4BLK: | |
613 | case NF4CHR: | |
614 | READ_BUF(8); | |
06553991 BF |
615 | create->cr_specdata1 = be32_to_cpup(p++); |
616 | create->cr_specdata2 = be32_to_cpup(p++); | |
1da177e4 LT |
617 | break; |
618 | case NF4SOCK: | |
619 | case NF4FIFO: | |
620 | case NF4DIR: | |
621 | default: | |
622 | break; | |
623 | } | |
624 | ||
625 | READ_BUF(4); | |
06553991 | 626 | create->cr_namelen = be32_to_cpup(p++); |
1da177e4 LT |
627 | READ_BUF(create->cr_namelen); |
628 | SAVEMEM(create->cr_name, create->cr_namelen); | |
a36b1725 | 629 | if ((status = check_filename(create->cr_name, create->cr_namelen))) |
1da177e4 LT |
630 | return status; |
631 | ||
3c8e0316 | 632 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
18032ca0 | 633 | &create->cr_acl, &create->cr_label); |
c0d6fc8a | 634 | if (status) |
1da177e4 LT |
635 | goto out; |
636 | ||
637 | DECODE_TAIL; | |
638 | } | |
639 | ||
b37ad28b | 640 | static inline __be32 |
1da177e4 LT |
641 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
642 | { | |
e31a1b66 | 643 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
1da177e4 LT |
644 | } |
645 | ||
b37ad28b | 646 | static inline __be32 |
1da177e4 LT |
647 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
648 | { | |
649 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
650 | } | |
651 | ||
b37ad28b | 652 | static __be32 |
1da177e4 LT |
653 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
654 | { | |
655 | DECODE_HEAD; | |
656 | ||
657 | READ_BUF(4); | |
06553991 | 658 | link->li_namelen = be32_to_cpup(p++); |
1da177e4 LT |
659 | READ_BUF(link->li_namelen); |
660 | SAVEMEM(link->li_name, link->li_namelen); | |
a36b1725 | 661 | if ((status = check_filename(link->li_name, link->li_namelen))) |
1da177e4 LT |
662 | return status; |
663 | ||
664 | DECODE_TAIL; | |
665 | } | |
666 | ||
b37ad28b | 667 | static __be32 |
1da177e4 LT |
668 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
669 | { | |
670 | DECODE_HEAD; | |
671 | ||
1da177e4 LT |
672 | /* |
673 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
674 | */ | |
675 | READ_BUF(28); | |
06553991 | 676 | lock->lk_type = be32_to_cpup(p++); |
1da177e4 LT |
677 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) |
678 | goto xdr_error; | |
06553991 | 679 | lock->lk_reclaim = be32_to_cpup(p++); |
542d1ab3 BF |
680 | p = xdr_decode_hyper(p, &lock->lk_offset); |
681 | p = xdr_decode_hyper(p, &lock->lk_length); | |
06553991 | 682 | lock->lk_is_new = be32_to_cpup(p++); |
1da177e4 LT |
683 | |
684 | if (lock->lk_is_new) { | |
e31a1b66 | 685 | READ_BUF(4); |
06553991 | 686 | lock->lk_new_open_seqid = be32_to_cpup(p++); |
e31a1b66 BH |
687 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
688 | if (status) | |
689 | return status; | |
690 | READ_BUF(8 + sizeof(clientid_t)); | |
06553991 | 691 | lock->lk_new_lock_seqid = be32_to_cpup(p++); |
1da177e4 | 692 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); |
06553991 | 693 | lock->lk_new_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
694 | READ_BUF(lock->lk_new_owner.len); |
695 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
696 | } else { | |
e31a1b66 BH |
697 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
698 | if (status) | |
699 | return status; | |
700 | READ_BUF(4); | |
06553991 | 701 | lock->lk_old_lock_seqid = be32_to_cpup(p++); |
1da177e4 LT |
702 | } |
703 | ||
704 | DECODE_TAIL; | |
705 | } | |
706 | ||
b37ad28b | 707 | static __be32 |
1da177e4 LT |
708 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
709 | { | |
710 | DECODE_HEAD; | |
711 | ||
712 | READ_BUF(32); | |
06553991 | 713 | lockt->lt_type = be32_to_cpup(p++); |
1da177e4 LT |
714 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) |
715 | goto xdr_error; | |
542d1ab3 BF |
716 | p = xdr_decode_hyper(p, &lockt->lt_offset); |
717 | p = xdr_decode_hyper(p, &lockt->lt_length); | |
1da177e4 | 718 | COPYMEM(&lockt->lt_clientid, 8); |
06553991 | 719 | lockt->lt_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
720 | READ_BUF(lockt->lt_owner.len); |
721 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
722 | ||
723 | DECODE_TAIL; | |
724 | } | |
725 | ||
b37ad28b | 726 | static __be32 |
1da177e4 LT |
727 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
728 | { | |
729 | DECODE_HEAD; | |
730 | ||
e31a1b66 | 731 | READ_BUF(8); |
06553991 | 732 | locku->lu_type = be32_to_cpup(p++); |
1da177e4 LT |
733 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) |
734 | goto xdr_error; | |
06553991 | 735 | locku->lu_seqid = be32_to_cpup(p++); |
e31a1b66 BH |
736 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
737 | if (status) | |
738 | return status; | |
739 | READ_BUF(16); | |
542d1ab3 BF |
740 | p = xdr_decode_hyper(p, &locku->lu_offset); |
741 | p = xdr_decode_hyper(p, &locku->lu_length); | |
1da177e4 LT |
742 | |
743 | DECODE_TAIL; | |
744 | } | |
745 | ||
b37ad28b | 746 | static __be32 |
1da177e4 LT |
747 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
748 | { | |
749 | DECODE_HEAD; | |
750 | ||
751 | READ_BUF(4); | |
06553991 | 752 | lookup->lo_len = be32_to_cpup(p++); |
1da177e4 LT |
753 | READ_BUF(lookup->lo_len); |
754 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
a36b1725 | 755 | if ((status = check_filename(lookup->lo_name, lookup->lo_len))) |
1da177e4 LT |
756 | return status; |
757 | ||
758 | DECODE_TAIL; | |
759 | } | |
760 | ||
2c8bd7e0 | 761 | static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when) |
04f9e664 BF |
762 | { |
763 | __be32 *p; | |
764 | u32 w; | |
765 | ||
766 | READ_BUF(4); | |
06553991 | 767 | w = be32_to_cpup(p++); |
2c8bd7e0 BH |
768 | *share_access = w & NFS4_SHARE_ACCESS_MASK; |
769 | *deleg_want = w & NFS4_SHARE_WANT_MASK; | |
770 | if (deleg_when) | |
771 | *deleg_when = w & NFS4_SHARE_WHEN_MASK; | |
772 | ||
04f9e664 BF |
773 | switch (w & NFS4_SHARE_ACCESS_MASK) { |
774 | case NFS4_SHARE_ACCESS_READ: | |
775 | case NFS4_SHARE_ACCESS_WRITE: | |
776 | case NFS4_SHARE_ACCESS_BOTH: | |
777 | break; | |
778 | default: | |
779 | return nfserr_bad_xdr; | |
780 | } | |
fc0d14fe | 781 | w &= ~NFS4_SHARE_ACCESS_MASK; |
04f9e664 BF |
782 | if (!w) |
783 | return nfs_ok; | |
784 | if (!argp->minorversion) | |
785 | return nfserr_bad_xdr; | |
786 | switch (w & NFS4_SHARE_WANT_MASK) { | |
787 | case NFS4_SHARE_WANT_NO_PREFERENCE: | |
788 | case NFS4_SHARE_WANT_READ_DELEG: | |
789 | case NFS4_SHARE_WANT_WRITE_DELEG: | |
790 | case NFS4_SHARE_WANT_ANY_DELEG: | |
791 | case NFS4_SHARE_WANT_NO_DELEG: | |
792 | case NFS4_SHARE_WANT_CANCEL: | |
793 | break; | |
794 | default: | |
795 | return nfserr_bad_xdr; | |
796 | } | |
92bac8c5 | 797 | w &= ~NFS4_SHARE_WANT_MASK; |
04f9e664 BF |
798 | if (!w) |
799 | return nfs_ok; | |
2c8bd7e0 BH |
800 | |
801 | if (!deleg_when) /* open_downgrade */ | |
802 | return nfserr_inval; | |
04f9e664 BF |
803 | switch (w) { |
804 | case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL: | |
805 | case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED: | |
c668fc6d BH |
806 | case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL | |
807 | NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED): | |
04f9e664 BF |
808 | return nfs_ok; |
809 | } | |
810 | xdr_error: | |
811 | return nfserr_bad_xdr; | |
812 | } | |
813 | ||
814 | static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x) | |
815 | { | |
816 | __be32 *p; | |
817 | ||
818 | READ_BUF(4); | |
06553991 | 819 | *x = be32_to_cpup(p++); |
04f9e664 | 820 | /* Note: unlinke access bits, deny bits may be zero. */ |
01cd4afa | 821 | if (*x & ~NFS4_SHARE_DENY_BOTH) |
04f9e664 BF |
822 | return nfserr_bad_xdr; |
823 | return nfs_ok; | |
824 | xdr_error: | |
825 | return nfserr_bad_xdr; | |
826 | } | |
827 | ||
a084daf5 BF |
828 | static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o) |
829 | { | |
830 | __be32 *p; | |
831 | ||
832 | READ_BUF(4); | |
06553991 | 833 | o->len = be32_to_cpup(p++); |
a084daf5 BF |
834 | |
835 | if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT) | |
836 | return nfserr_bad_xdr; | |
837 | ||
838 | READ_BUF(o->len); | |
839 | SAVEMEM(o->data, o->len); | |
840 | return nfs_ok; | |
841 | xdr_error: | |
842 | return nfserr_bad_xdr; | |
843 | } | |
844 | ||
b37ad28b | 845 | static __be32 |
1da177e4 LT |
846 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
847 | { | |
848 | DECODE_HEAD; | |
2c8bd7e0 | 849 | u32 dummy; |
1da177e4 LT |
850 | |
851 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
852 | open->op_iattr.ia_valid = 0; | |
fe0750e5 | 853 | open->op_openowner = NULL; |
1da177e4 | 854 | |
9d313b17 | 855 | open->op_xdr_error = 0; |
1da177e4 | 856 | /* seqid, share_access, share_deny, clientid, ownerlen */ |
04f9e664 | 857 | READ_BUF(4); |
06553991 | 858 | open->op_seqid = be32_to_cpup(p++); |
2c8bd7e0 BH |
859 | /* decode, yet ignore deleg_when until supported */ |
860 | status = nfsd4_decode_share_access(argp, &open->op_share_access, | |
861 | &open->op_deleg_want, &dummy); | |
04f9e664 BF |
862 | if (status) |
863 | goto xdr_error; | |
864 | status = nfsd4_decode_share_deny(argp, &open->op_share_deny); | |
865 | if (status) | |
866 | goto xdr_error; | |
a084daf5 | 867 | READ_BUF(sizeof(clientid_t)); |
1da177e4 | 868 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); |
a084daf5 BF |
869 | status = nfsd4_decode_opaque(argp, &open->op_owner); |
870 | if (status) | |
871 | goto xdr_error; | |
872 | READ_BUF(4); | |
06553991 | 873 | open->op_create = be32_to_cpup(p++); |
1da177e4 LT |
874 | switch (open->op_create) { |
875 | case NFS4_OPEN_NOCREATE: | |
876 | break; | |
877 | case NFS4_OPEN_CREATE: | |
878 | READ_BUF(4); | |
06553991 | 879 | open->op_createmode = be32_to_cpup(p++); |
1da177e4 LT |
880 | switch (open->op_createmode) { |
881 | case NFS4_CREATE_UNCHECKED: | |
882 | case NFS4_CREATE_GUARDED: | |
c0d6fc8a | 883 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
18032ca0 | 884 | &open->op_iattr, &open->op_acl, &open->op_label); |
c0d6fc8a | 885 | if (status) |
1da177e4 LT |
886 | goto out; |
887 | break; | |
888 | case NFS4_CREATE_EXCLUSIVE: | |
ab4684d1 CL |
889 | READ_BUF(NFS4_VERIFIER_SIZE); |
890 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 891 | break; |
79fb54ab BH |
892 | case NFS4_CREATE_EXCLUSIVE4_1: |
893 | if (argp->minorversion < 1) | |
894 | goto xdr_error; | |
ab4684d1 CL |
895 | READ_BUF(NFS4_VERIFIER_SIZE); |
896 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
79fb54ab | 897 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
18032ca0 | 898 | &open->op_iattr, &open->op_acl, &open->op_label); |
79fb54ab BH |
899 | if (status) |
900 | goto out; | |
901 | break; | |
1da177e4 LT |
902 | default: |
903 | goto xdr_error; | |
904 | } | |
905 | break; | |
906 | default: | |
907 | goto xdr_error; | |
908 | } | |
909 | ||
910 | /* open_claim */ | |
911 | READ_BUF(4); | |
06553991 | 912 | open->op_claim_type = be32_to_cpup(p++); |
1da177e4 LT |
913 | switch (open->op_claim_type) { |
914 | case NFS4_OPEN_CLAIM_NULL: | |
915 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
916 | READ_BUF(4); | |
06553991 | 917 | open->op_fname.len = be32_to_cpup(p++); |
1da177e4 LT |
918 | READ_BUF(open->op_fname.len); |
919 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 920 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
921 | return status; |
922 | break; | |
923 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
924 | READ_BUF(4); | |
06553991 | 925 | open->op_delegate_type = be32_to_cpup(p++); |
1da177e4 LT |
926 | break; |
927 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
e31a1b66 BH |
928 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
929 | if (status) | |
930 | return status; | |
931 | READ_BUF(4); | |
06553991 | 932 | open->op_fname.len = be32_to_cpup(p++); |
1da177e4 LT |
933 | READ_BUF(open->op_fname.len); |
934 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 935 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
936 | return status; |
937 | break; | |
8b289b2c BF |
938 | case NFS4_OPEN_CLAIM_FH: |
939 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
940 | if (argp->minorversion < 1) | |
941 | goto xdr_error; | |
942 | /* void */ | |
943 | break; | |
944 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
945 | if (argp->minorversion < 1) | |
946 | goto xdr_error; | |
947 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); | |
948 | if (status) | |
949 | return status; | |
950 | break; | |
1da177e4 LT |
951 | default: |
952 | goto xdr_error; | |
953 | } | |
954 | ||
955 | DECODE_TAIL; | |
956 | } | |
957 | ||
b37ad28b | 958 | static __be32 |
1da177e4 LT |
959 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
960 | { | |
961 | DECODE_HEAD; | |
e1a90ebd AS |
962 | |
963 | if (argp->minorversion >= 1) | |
964 | return nfserr_notsupp; | |
965 | ||
e31a1b66 BH |
966 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
967 | if (status) | |
968 | return status; | |
969 | READ_BUF(4); | |
06553991 | 970 | open_conf->oc_seqid = be32_to_cpup(p++); |
e1a90ebd | 971 | |
1da177e4 LT |
972 | DECODE_TAIL; |
973 | } | |
974 | ||
b37ad28b | 975 | static __be32 |
1da177e4 LT |
976 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
977 | { | |
978 | DECODE_HEAD; | |
979 | ||
e31a1b66 BH |
980 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
981 | if (status) | |
982 | return status; | |
04f9e664 | 983 | READ_BUF(4); |
06553991 | 984 | open_down->od_seqid = be32_to_cpup(p++); |
2c8bd7e0 BH |
985 | status = nfsd4_decode_share_access(argp, &open_down->od_share_access, |
986 | &open_down->od_deleg_want, NULL); | |
04f9e664 BF |
987 | if (status) |
988 | return status; | |
989 | status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny); | |
990 | if (status) | |
991 | return status; | |
1da177e4 LT |
992 | DECODE_TAIL; |
993 | } | |
994 | ||
b37ad28b | 995 | static __be32 |
1da177e4 LT |
996 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
997 | { | |
998 | DECODE_HEAD; | |
999 | ||
1000 | READ_BUF(4); | |
06553991 | 1001 | putfh->pf_fhlen = be32_to_cpup(p++); |
1da177e4 LT |
1002 | if (putfh->pf_fhlen > NFS4_FHSIZE) |
1003 | goto xdr_error; | |
1004 | READ_BUF(putfh->pf_fhlen); | |
1005 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
1006 | ||
1007 | DECODE_TAIL; | |
1008 | } | |
1009 | ||
e1a90ebd AS |
1010 | static __be32 |
1011 | nfsd4_decode_putpubfh(struct nfsd4_compoundargs *argp, void *p) | |
1012 | { | |
1013 | if (argp->minorversion == 0) | |
1014 | return nfs_ok; | |
1015 | return nfserr_notsupp; | |
1016 | } | |
1017 | ||
b37ad28b | 1018 | static __be32 |
1da177e4 LT |
1019 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
1020 | { | |
1021 | DECODE_HEAD; | |
1022 | ||
e31a1b66 BH |
1023 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
1024 | if (status) | |
1025 | return status; | |
1026 | READ_BUF(12); | |
542d1ab3 | 1027 | p = xdr_decode_hyper(p, &read->rd_offset); |
06553991 | 1028 | read->rd_length = be32_to_cpup(p++); |
1da177e4 LT |
1029 | |
1030 | DECODE_TAIL; | |
1031 | } | |
1032 | ||
b37ad28b | 1033 | static __be32 |
1da177e4 LT |
1034 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
1035 | { | |
1036 | DECODE_HEAD; | |
1037 | ||
1038 | READ_BUF(24); | |
542d1ab3 | 1039 | p = xdr_decode_hyper(p, &readdir->rd_cookie); |
1da177e4 | 1040 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); |
06553991 BF |
1041 | readdir->rd_dircount = be32_to_cpup(p++); |
1042 | readdir->rd_maxcount = be32_to_cpup(p++); | |
1da177e4 LT |
1043 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) |
1044 | goto out; | |
1045 | ||
1046 | DECODE_TAIL; | |
1047 | } | |
1048 | ||
b37ad28b | 1049 | static __be32 |
1da177e4 LT |
1050 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
1051 | { | |
1052 | DECODE_HEAD; | |
1053 | ||
1054 | READ_BUF(4); | |
06553991 | 1055 | remove->rm_namelen = be32_to_cpup(p++); |
1da177e4 LT |
1056 | READ_BUF(remove->rm_namelen); |
1057 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
a36b1725 | 1058 | if ((status = check_filename(remove->rm_name, remove->rm_namelen))) |
1da177e4 LT |
1059 | return status; |
1060 | ||
1061 | DECODE_TAIL; | |
1062 | } | |
1063 | ||
b37ad28b | 1064 | static __be32 |
1da177e4 LT |
1065 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
1066 | { | |
1067 | DECODE_HEAD; | |
1068 | ||
1069 | READ_BUF(4); | |
06553991 | 1070 | rename->rn_snamelen = be32_to_cpup(p++); |
1da177e4 LT |
1071 | READ_BUF(rename->rn_snamelen + 4); |
1072 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); | |
06553991 | 1073 | rename->rn_tnamelen = be32_to_cpup(p++); |
1da177e4 LT |
1074 | READ_BUF(rename->rn_tnamelen); |
1075 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
a36b1725 | 1076 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen))) |
1da177e4 | 1077 | return status; |
a36b1725 | 1078 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen))) |
1da177e4 LT |
1079 | return status; |
1080 | ||
1081 | DECODE_TAIL; | |
1082 | } | |
1083 | ||
b37ad28b | 1084 | static __be32 |
1da177e4 LT |
1085 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
1086 | { | |
1087 | DECODE_HEAD; | |
1088 | ||
e1a90ebd AS |
1089 | if (argp->minorversion >= 1) |
1090 | return nfserr_notsupp; | |
1091 | ||
1da177e4 LT |
1092 | READ_BUF(sizeof(clientid_t)); |
1093 | COPYMEM(clientid, sizeof(clientid_t)); | |
1094 | ||
1095 | DECODE_TAIL; | |
1096 | } | |
1097 | ||
dcb488a3 AA |
1098 | static __be32 |
1099 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
1100 | struct nfsd4_secinfo *secinfo) | |
1101 | { | |
1102 | DECODE_HEAD; | |
1103 | ||
1104 | READ_BUF(4); | |
06553991 | 1105 | secinfo->si_namelen = be32_to_cpup(p++); |
dcb488a3 AA |
1106 | READ_BUF(secinfo->si_namelen); |
1107 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
a36b1725 | 1108 | status = check_filename(secinfo->si_name, secinfo->si_namelen); |
dcb488a3 AA |
1109 | if (status) |
1110 | return status; | |
1111 | DECODE_TAIL; | |
1112 | } | |
1113 | ||
04f4ad16 BF |
1114 | static __be32 |
1115 | nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, | |
1116 | struct nfsd4_secinfo_no_name *sin) | |
1117 | { | |
1118 | DECODE_HEAD; | |
1119 | ||
1120 | READ_BUF(4); | |
06553991 | 1121 | sin->sin_style = be32_to_cpup(p++); |
04f4ad16 BF |
1122 | DECODE_TAIL; |
1123 | } | |
1124 | ||
b37ad28b | 1125 | static __be32 |
1da177e4 LT |
1126 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
1127 | { | |
e31a1b66 | 1128 | __be32 status; |
1da177e4 | 1129 | |
e31a1b66 BH |
1130 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
1131 | if (status) | |
1132 | return status; | |
3c8e0316 | 1133 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
18032ca0 | 1134 | &setattr->sa_acl, &setattr->sa_label); |
1da177e4 LT |
1135 | } |
1136 | ||
b37ad28b | 1137 | static __be32 |
1da177e4 LT |
1138 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
1139 | { | |
1140 | DECODE_HEAD; | |
1141 | ||
e1a90ebd AS |
1142 | if (argp->minorversion >= 1) |
1143 | return nfserr_notsupp; | |
1144 | ||
ab4684d1 CL |
1145 | READ_BUF(NFS4_VERIFIER_SIZE); |
1146 | COPYMEM(setclientid->se_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 1147 | |
a084daf5 BF |
1148 | status = nfsd4_decode_opaque(argp, &setclientid->se_name); |
1149 | if (status) | |
1150 | return nfserr_bad_xdr; | |
1151 | READ_BUF(8); | |
06553991 BF |
1152 | setclientid->se_callback_prog = be32_to_cpup(p++); |
1153 | setclientid->se_callback_netid_len = be32_to_cpup(p++); | |
1da177e4 LT |
1154 | |
1155 | READ_BUF(setclientid->se_callback_netid_len + 4); | |
1156 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); | |
06553991 | 1157 | setclientid->se_callback_addr_len = be32_to_cpup(p++); |
1da177e4 LT |
1158 | |
1159 | READ_BUF(setclientid->se_callback_addr_len + 4); | |
1160 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); | |
06553991 | 1161 | setclientid->se_callback_ident = be32_to_cpup(p++); |
1da177e4 LT |
1162 | |
1163 | DECODE_TAIL; | |
1164 | } | |
1165 | ||
b37ad28b | 1166 | static __be32 |
1da177e4 LT |
1167 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
1168 | { | |
1169 | DECODE_HEAD; | |
1170 | ||
e1a90ebd AS |
1171 | if (argp->minorversion >= 1) |
1172 | return nfserr_notsupp; | |
1173 | ||
ab4684d1 | 1174 | READ_BUF(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 1175 | COPYMEM(&scd_c->sc_clientid, 8); |
ab4684d1 | 1176 | COPYMEM(&scd_c->sc_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
1177 | |
1178 | DECODE_TAIL; | |
1179 | } | |
1180 | ||
1181 | /* Also used for NVERIFY */ | |
b37ad28b | 1182 | static __be32 |
1da177e4 LT |
1183 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
1184 | { | |
1da177e4 LT |
1185 | DECODE_HEAD; |
1186 | ||
1187 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
1188 | goto out; | |
1189 | ||
1190 | /* For convenience's sake, we compare raw xdr'd attributes in | |
e5f95703 BF |
1191 | * nfsd4_proc_verify */ |
1192 | ||
1da177e4 | 1193 | READ_BUF(4); |
06553991 | 1194 | verify->ve_attrlen = be32_to_cpup(p++); |
1da177e4 LT |
1195 | READ_BUF(verify->ve_attrlen); |
1196 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
1197 | ||
1198 | DECODE_TAIL; | |
1199 | } | |
1200 | ||
b37ad28b | 1201 | static __be32 |
1da177e4 LT |
1202 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
1203 | { | |
1204 | int avail; | |
1da177e4 LT |
1205 | int len; |
1206 | DECODE_HEAD; | |
1207 | ||
e31a1b66 BH |
1208 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
1209 | if (status) | |
1210 | return status; | |
1211 | READ_BUF(16); | |
542d1ab3 | 1212 | p = xdr_decode_hyper(p, &write->wr_offset); |
06553991 | 1213 | write->wr_stable_how = be32_to_cpup(p++); |
1da177e4 LT |
1214 | if (write->wr_stable_how > 2) |
1215 | goto xdr_error; | |
06553991 | 1216 | write->wr_buflen = be32_to_cpup(p++); |
1da177e4 LT |
1217 | |
1218 | /* Sorry .. no magic macros for this.. * | |
1219 | * READ_BUF(write->wr_buflen); | |
1220 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
1221 | */ | |
1222 | avail = (char*)argp->end - (char*)argp->p; | |
1223 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
1224 | dprintk("NFSD: xdr error (%s:%d)\n", |
1225 | __FILE__, __LINE__); | |
1da177e4 LT |
1226 | goto xdr_error; |
1227 | } | |
70cc7f75 BF |
1228 | write->wr_head.iov_base = p; |
1229 | write->wr_head.iov_len = avail; | |
70cc7f75 | 1230 | write->wr_pagelist = argp->pagelist; |
5a80a54d BF |
1231 | |
1232 | len = XDR_QUADLEN(write->wr_buflen) << 2; | |
1233 | if (len >= avail) { | |
1234 | int pages; | |
1235 | ||
1236 | len -= avail; | |
1237 | ||
1238 | pages = len >> PAGE_SHIFT; | |
1239 | argp->pagelist += pages; | |
1240 | argp->pagelen -= pages * PAGE_SIZE; | |
1241 | len -= pages * PAGE_SIZE; | |
1242 | ||
1243 | argp->p = (__be32 *)page_address(argp->pagelist[0]); | |
365da4ad | 1244 | argp->pagelist++; |
5a80a54d | 1245 | argp->end = argp->p + XDR_QUADLEN(PAGE_SIZE); |
1da177e4 | 1246 | } |
5a80a54d | 1247 | argp->p += XDR_QUADLEN(len); |
1da177e4 LT |
1248 | |
1249 | DECODE_TAIL; | |
1250 | } | |
1251 | ||
b37ad28b | 1252 | static __be32 |
1da177e4 LT |
1253 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
1254 | { | |
1255 | DECODE_HEAD; | |
1256 | ||
e1a90ebd AS |
1257 | if (argp->minorversion >= 1) |
1258 | return nfserr_notsupp; | |
1259 | ||
1da177e4 LT |
1260 | READ_BUF(12); |
1261 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
06553991 | 1262 | rlockowner->rl_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
1263 | READ_BUF(rlockowner->rl_owner.len); |
1264 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
1265 | ||
60adfc50 AA |
1266 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1267 | return nfserr_inval; | |
1da177e4 LT |
1268 | DECODE_TAIL; |
1269 | } | |
1270 | ||
2db134eb AA |
1271 | static __be32 |
1272 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1273 | struct nfsd4_exchange_id *exid) |
2db134eb | 1274 | { |
5afa040b | 1275 | int dummy, tmp; |
0733d213 AA |
1276 | DECODE_HEAD; |
1277 | ||
1278 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1279 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1280 | ||
a084daf5 BF |
1281 | status = nfsd4_decode_opaque(argp, &exid->clname); |
1282 | if (status) | |
1283 | return nfserr_bad_xdr; | |
0733d213 AA |
1284 | |
1285 | READ_BUF(4); | |
06553991 | 1286 | exid->flags = be32_to_cpup(p++); |
0733d213 AA |
1287 | |
1288 | /* Ignore state_protect4_a */ | |
1289 | READ_BUF(4); | |
06553991 | 1290 | exid->spa_how = be32_to_cpup(p++); |
0733d213 AA |
1291 | switch (exid->spa_how) { |
1292 | case SP4_NONE: | |
1293 | break; | |
1294 | case SP4_MACH_CRED: | |
1295 | /* spo_must_enforce */ | |
1296 | READ_BUF(4); | |
06553991 | 1297 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1298 | READ_BUF(dummy * 4); |
1299 | p += dummy; | |
1300 | ||
1301 | /* spo_must_allow */ | |
1302 | READ_BUF(4); | |
06553991 | 1303 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1304 | READ_BUF(dummy * 4); |
1305 | p += dummy; | |
1306 | break; | |
1307 | case SP4_SSV: | |
1308 | /* ssp_ops */ | |
1309 | READ_BUF(4); | |
06553991 | 1310 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1311 | READ_BUF(dummy * 4); |
1312 | p += dummy; | |
1313 | ||
1314 | READ_BUF(4); | |
06553991 | 1315 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1316 | READ_BUF(dummy * 4); |
1317 | p += dummy; | |
1318 | ||
1319 | /* ssp_hash_algs<> */ | |
1320 | READ_BUF(4); | |
06553991 | 1321 | tmp = be32_to_cpup(p++); |
5afa040b MJ |
1322 | while (tmp--) { |
1323 | READ_BUF(4); | |
06553991 | 1324 | dummy = be32_to_cpup(p++); |
5afa040b MJ |
1325 | READ_BUF(dummy); |
1326 | p += XDR_QUADLEN(dummy); | |
1327 | } | |
0733d213 AA |
1328 | |
1329 | /* ssp_encr_algs<> */ | |
1330 | READ_BUF(4); | |
06553991 | 1331 | tmp = be32_to_cpup(p++); |
5afa040b MJ |
1332 | while (tmp--) { |
1333 | READ_BUF(4); | |
06553991 | 1334 | dummy = be32_to_cpup(p++); |
5afa040b MJ |
1335 | READ_BUF(dummy); |
1336 | p += XDR_QUADLEN(dummy); | |
1337 | } | |
0733d213 AA |
1338 | |
1339 | /* ssp_window and ssp_num_gss_handles */ | |
1340 | READ_BUF(8); | |
06553991 BF |
1341 | dummy = be32_to_cpup(p++); |
1342 | dummy = be32_to_cpup(p++); | |
0733d213 AA |
1343 | break; |
1344 | default: | |
1345 | goto xdr_error; | |
1346 | } | |
1347 | ||
1348 | /* Ignore Implementation ID */ | |
1349 | READ_BUF(4); /* nfs_impl_id4 array length */ | |
06553991 | 1350 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1351 | |
1352 | if (dummy > 1) | |
1353 | goto xdr_error; | |
1354 | ||
1355 | if (dummy == 1) { | |
1356 | /* nii_domain */ | |
1357 | READ_BUF(4); | |
06553991 | 1358 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1359 | READ_BUF(dummy); |
1360 | p += XDR_QUADLEN(dummy); | |
1361 | ||
1362 | /* nii_name */ | |
1363 | READ_BUF(4); | |
06553991 | 1364 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1365 | READ_BUF(dummy); |
1366 | p += XDR_QUADLEN(dummy); | |
1367 | ||
1368 | /* nii_date */ | |
1369 | READ_BUF(12); | |
1370 | p += 3; | |
1371 | } | |
1372 | DECODE_TAIL; | |
2db134eb AA |
1373 | } |
1374 | ||
1375 | static __be32 | |
1376 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1377 | struct nfsd4_create_session *sess) | |
1378 | { | |
ec6b5d7b | 1379 | DECODE_HEAD; |
ec6b5d7b | 1380 | u32 dummy; |
ec6b5d7b AA |
1381 | |
1382 | READ_BUF(16); | |
1383 | COPYMEM(&sess->clientid, 8); | |
06553991 BF |
1384 | sess->seqid = be32_to_cpup(p++); |
1385 | sess->flags = be32_to_cpup(p++); | |
ec6b5d7b AA |
1386 | |
1387 | /* Fore channel attrs */ | |
1388 | READ_BUF(28); | |
06553991 BF |
1389 | dummy = be32_to_cpup(p++); /* headerpadsz is always 0 */ |
1390 | sess->fore_channel.maxreq_sz = be32_to_cpup(p++); | |
1391 | sess->fore_channel.maxresp_sz = be32_to_cpup(p++); | |
1392 | sess->fore_channel.maxresp_cached = be32_to_cpup(p++); | |
1393 | sess->fore_channel.maxops = be32_to_cpup(p++); | |
1394 | sess->fore_channel.maxreqs = be32_to_cpup(p++); | |
1395 | sess->fore_channel.nr_rdma_attrs = be32_to_cpup(p++); | |
ec6b5d7b AA |
1396 | if (sess->fore_channel.nr_rdma_attrs == 1) { |
1397 | READ_BUF(4); | |
06553991 | 1398 | sess->fore_channel.rdma_attrs = be32_to_cpup(p++); |
ec6b5d7b AA |
1399 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { |
1400 | dprintk("Too many fore channel attr bitmaps!\n"); | |
1401 | goto xdr_error; | |
1402 | } | |
1403 | ||
1404 | /* Back channel attrs */ | |
1405 | READ_BUF(28); | |
06553991 BF |
1406 | dummy = be32_to_cpup(p++); /* headerpadsz is always 0 */ |
1407 | sess->back_channel.maxreq_sz = be32_to_cpup(p++); | |
1408 | sess->back_channel.maxresp_sz = be32_to_cpup(p++); | |
1409 | sess->back_channel.maxresp_cached = be32_to_cpup(p++); | |
1410 | sess->back_channel.maxops = be32_to_cpup(p++); | |
1411 | sess->back_channel.maxreqs = be32_to_cpup(p++); | |
1412 | sess->back_channel.nr_rdma_attrs = be32_to_cpup(p++); | |
ec6b5d7b AA |
1413 | if (sess->back_channel.nr_rdma_attrs == 1) { |
1414 | READ_BUF(4); | |
06553991 | 1415 | sess->back_channel.rdma_attrs = be32_to_cpup(p++); |
ec6b5d7b AA |
1416 | } else if (sess->back_channel.nr_rdma_attrs > 1) { |
1417 | dprintk("Too many back channel attr bitmaps!\n"); | |
1418 | goto xdr_error; | |
1419 | } | |
1420 | ||
acb2887e | 1421 | READ_BUF(4); |
06553991 | 1422 | sess->callback_prog = be32_to_cpup(p++); |
acb2887e | 1423 | nfsd4_decode_cb_sec(argp, &sess->cb_sec); |
ec6b5d7b | 1424 | DECODE_TAIL; |
2db134eb AA |
1425 | } |
1426 | ||
1427 | static __be32 | |
1428 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, | |
1429 | struct nfsd4_destroy_session *destroy_session) | |
1430 | { | |
e10e0cfc BH |
1431 | DECODE_HEAD; |
1432 | READ_BUF(NFS4_MAX_SESSIONID_LEN); | |
1433 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1434 | ||
1435 | DECODE_TAIL; | |
2db134eb AA |
1436 | } |
1437 | ||
e1ca12df BS |
1438 | static __be32 |
1439 | nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp, | |
1440 | struct nfsd4_free_stateid *free_stateid) | |
1441 | { | |
1442 | DECODE_HEAD; | |
1443 | ||
1444 | READ_BUF(sizeof(stateid_t)); | |
06553991 | 1445 | free_stateid->fr_stateid.si_generation = be32_to_cpup(p++); |
e1ca12df BS |
1446 | COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t)); |
1447 | ||
1448 | DECODE_TAIL; | |
1449 | } | |
1450 | ||
2db134eb AA |
1451 | static __be32 |
1452 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, | |
1453 | struct nfsd4_sequence *seq) | |
1454 | { | |
b85d4c01 BH |
1455 | DECODE_HEAD; |
1456 | ||
1457 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); | |
1458 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
06553991 BF |
1459 | seq->seqid = be32_to_cpup(p++); |
1460 | seq->slotid = be32_to_cpup(p++); | |
1461 | seq->maxslots = be32_to_cpup(p++); | |
1462 | seq->cachethis = be32_to_cpup(p++); | |
b85d4c01 BH |
1463 | |
1464 | DECODE_TAIL; | |
2db134eb AA |
1465 | } |
1466 | ||
17456804 BS |
1467 | static __be32 |
1468 | nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid) | |
1469 | { | |
17456804 | 1470 | int i; |
03cfb420 BS |
1471 | __be32 *p, status; |
1472 | struct nfsd4_test_stateid_id *stateid; | |
17456804 BS |
1473 | |
1474 | READ_BUF(4); | |
1475 | test_stateid->ts_num_ids = ntohl(*p++); | |
1476 | ||
03cfb420 | 1477 | INIT_LIST_HEAD(&test_stateid->ts_stateid_list); |
17456804 BS |
1478 | |
1479 | for (i = 0; i < test_stateid->ts_num_ids; i++) { | |
d5e23383 | 1480 | stateid = svcxdr_tmpalloc(argp, sizeof(*stateid)); |
03cfb420 | 1481 | if (!stateid) { |
afcf6792 | 1482 | status = nfserrno(-ENOMEM); |
03cfb420 BS |
1483 | goto out; |
1484 | } | |
1485 | ||
03cfb420 BS |
1486 | INIT_LIST_HEAD(&stateid->ts_id_list); |
1487 | list_add_tail(&stateid->ts_id_list, &test_stateid->ts_stateid_list); | |
1488 | ||
1489 | status = nfsd4_decode_stateid(argp, &stateid->ts_id_stateid); | |
17456804 | 1490 | if (status) |
03cfb420 | 1491 | goto out; |
17456804 BS |
1492 | } |
1493 | ||
1494 | status = 0; | |
1495 | out: | |
1496 | return status; | |
1497 | xdr_error: | |
1498 | dprintk("NFSD: xdr error (%s:%d)\n", __FILE__, __LINE__); | |
1499 | status = nfserr_bad_xdr; | |
1500 | goto out; | |
1501 | } | |
1502 | ||
345c2842 MJ |
1503 | static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_clientid *dc) |
1504 | { | |
1505 | DECODE_HEAD; | |
1506 | ||
1507 | READ_BUF(8); | |
1508 | COPYMEM(&dc->clientid, 8); | |
1509 | ||
1510 | DECODE_TAIL; | |
1511 | } | |
1512 | ||
4dc6ec00 BF |
1513 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) |
1514 | { | |
1515 | DECODE_HEAD; | |
1516 | ||
1517 | READ_BUF(4); | |
06553991 | 1518 | rc->rca_one_fs = be32_to_cpup(p++); |
4dc6ec00 BF |
1519 | |
1520 | DECODE_TAIL; | |
1521 | } | |
1522 | ||
347e0ad9 BH |
1523 | static __be32 |
1524 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1525 | { | |
1526 | return nfs_ok; | |
1527 | } | |
1528 | ||
3c375c6f BH |
1529 | static __be32 |
1530 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1531 | { | |
1e685ec2 | 1532 | return nfserr_notsupp; |
3c375c6f BH |
1533 | } |
1534 | ||
347e0ad9 BH |
1535 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1536 | ||
1537 | static nfsd4_dec nfsd4_dec_ops[] = { | |
ad1060c8 BF |
1538 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1539 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1540 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1541 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1542 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1543 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1544 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1545 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1546 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1547 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1548 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1549 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1550 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1551 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1552 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1553 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1554 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1555 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1556 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1557 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
e1a90ebd | 1558 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_putpubfh, |
ad1060c8 BF |
1559 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1560 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1561 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1562 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1563 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1564 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1565 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1566 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1567 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1568 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1569 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1570 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1571 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1572 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1573 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1574 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
2db134eb AA |
1575 | |
1576 | /* new operations for NFSv4.1 */ | |
cb73a9f4 | 1577 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_backchannel_ctl, |
1d1bc8f2 | 1578 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
9064caae RD |
1579 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
1580 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
1581 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
e1ca12df | 1582 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, |
9064caae RD |
1583 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
1584 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1585 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1586 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1587 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1588 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
04f4ad16 | 1589 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
9064caae RD |
1590 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
1591 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
17456804 | 1592 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid, |
9064caae | 1593 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
345c2842 | 1594 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, |
4dc6ec00 | 1595 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
2db134eb AA |
1596 | }; |
1597 | ||
e1a90ebd AS |
1598 | static inline bool |
1599 | nfsd4_opnum_in_range(struct nfsd4_compoundargs *argp, struct nfsd4_op *op) | |
1600 | { | |
8217d146 | 1601 | if (op->opnum < FIRST_NFS4_OP) |
e1a90ebd | 1602 | return false; |
8217d146 | 1603 | else if (argp->minorversion == 0 && op->opnum > LAST_NFS40_OP) |
e1a90ebd | 1604 | return false; |
8217d146 AS |
1605 | else if (argp->minorversion == 1 && op->opnum > LAST_NFS41_OP) |
1606 | return false; | |
1607 | else if (argp->minorversion == 2 && op->opnum > LAST_NFS42_OP) | |
e1a90ebd AS |
1608 | return false; |
1609 | return true; | |
1610 | } | |
f2feb96b | 1611 | |
b37ad28b | 1612 | static __be32 |
1da177e4 LT |
1613 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1614 | { | |
1615 | DECODE_HEAD; | |
1616 | struct nfsd4_op *op; | |
1091006c | 1617 | bool cachethis = false; |
a5cddc88 BF |
1618 | int auth_slack= argp->rqstp->rq_auth_slack; |
1619 | int max_reply = auth_slack + 8; /* opcnt, status */ | |
b0e35fda BF |
1620 | int readcount = 0; |
1621 | int readbytes = 0; | |
1da177e4 LT |
1622 | int i; |
1623 | ||
1da177e4 | 1624 | READ_BUF(4); |
06553991 | 1625 | argp->taglen = be32_to_cpup(p++); |
1da177e4 LT |
1626 | READ_BUF(argp->taglen + 8); |
1627 | SAVEMEM(argp->tag, argp->taglen); | |
06553991 BF |
1628 | argp->minorversion = be32_to_cpup(p++); |
1629 | argp->opcnt = be32_to_cpup(p++); | |
4f0cefbf | 1630 | max_reply += 4 + (XDR_QUADLEN(argp->taglen) << 2); |
1da177e4 LT |
1631 | |
1632 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1633 | goto xdr_error; | |
1634 | if (argp->opcnt > 100) | |
1635 | goto xdr_error; | |
1636 | ||
e8c96f8c | 1637 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
1da177e4 LT |
1638 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1639 | if (!argp->ops) { | |
1640 | argp->ops = argp->iops; | |
817cb9d4 | 1641 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1642 | goto xdr_error; |
1643 | } | |
1644 | } | |
1645 | ||
e1a90ebd | 1646 | if (argp->minorversion > NFSD_SUPPORTED_MINOR_VERSION) |
30cff1ff BH |
1647 | argp->opcnt = 0; |
1648 | ||
1da177e4 LT |
1649 | for (i = 0; i < argp->opcnt; i++) { |
1650 | op = &argp->ops[i]; | |
1651 | op->replay = NULL; | |
1652 | ||
8a61b18c | 1653 | READ_BUF(4); |
06553991 | 1654 | op->opnum = be32_to_cpup(p++); |
1da177e4 | 1655 | |
e1a90ebd AS |
1656 | if (nfsd4_opnum_in_range(argp, op)) |
1657 | op->status = nfsd4_dec_ops[op->opnum](argp, &op->u); | |
347e0ad9 | 1658 | else { |
1da177e4 LT |
1659 | op->opnum = OP_ILLEGAL; |
1660 | op->status = nfserr_op_illegal; | |
1da177e4 | 1661 | } |
1091006c BF |
1662 | /* |
1663 | * We'll try to cache the result in the DRC if any one | |
1664 | * op in the compound wants to be cached: | |
1665 | */ | |
1666 | cachethis |= nfsd4_cache_this_op(op); | |
6ff40dec | 1667 | |
b0e35fda BF |
1668 | if (op->opnum == OP_READ) { |
1669 | readcount++; | |
1670 | readbytes += nfsd4_max_reply(argp->rqstp, op); | |
1671 | } else | |
1672 | max_reply += nfsd4_max_reply(argp->rqstp, op); | |
e372ba60 BF |
1673 | |
1674 | if (op->status) { | |
1675 | argp->opcnt = i+1; | |
1676 | break; | |
1677 | } | |
1da177e4 | 1678 | } |
1091006c BF |
1679 | /* Sessions make the DRC unnecessary: */ |
1680 | if (argp->minorversion) | |
1681 | cachethis = false; | |
b0e35fda | 1682 | svc_reserve(argp->rqstp, max_reply + readbytes); |
1091006c | 1683 | argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; |
1da177e4 | 1684 | |
a5cddc88 | 1685 | if (readcount > 1 || max_reply > PAGE_SIZE - auth_slack) |
b0e35fda BF |
1686 | argp->rqstp->rq_splice_ok = false; |
1687 | ||
1da177e4 LT |
1688 | DECODE_TAIL; |
1689 | } | |
1da177e4 | 1690 | |
d05d5744 | 1691 | static __be32 *encode_change(__be32 *p, struct kstat *stat, struct inode *inode) |
c654b8a9 BF |
1692 | { |
1693 | if (IS_I_VERSION(inode)) { | |
d05d5744 | 1694 | p = xdr_encode_hyper(p, inode->i_version); |
c654b8a9 | 1695 | } else { |
d05d5744 BF |
1696 | *p++ = cpu_to_be32(stat->ctime.tv_sec); |
1697 | *p++ = cpu_to_be32(stat->ctime.tv_nsec); | |
c654b8a9 | 1698 | } |
d05d5744 | 1699 | return p; |
c654b8a9 BF |
1700 | } |
1701 | ||
d05d5744 | 1702 | static __be32 *encode_cinfo(__be32 *p, struct nfsd4_change_info *c) |
c654b8a9 | 1703 | { |
d05d5744 | 1704 | *p++ = cpu_to_be32(c->atomic); |
c654b8a9 | 1705 | if (c->change_supported) { |
d05d5744 BF |
1706 | p = xdr_encode_hyper(p, c->before_change); |
1707 | p = xdr_encode_hyper(p, c->after_change); | |
c654b8a9 | 1708 | } else { |
d05d5744 BF |
1709 | *p++ = cpu_to_be32(c->before_ctime_sec); |
1710 | *p++ = cpu_to_be32(c->before_ctime_nsec); | |
1711 | *p++ = cpu_to_be32(c->after_ctime_sec); | |
1712 | *p++ = cpu_to_be32(c->after_ctime_nsec); | |
c654b8a9 | 1713 | } |
d05d5744 | 1714 | return p; |
c654b8a9 | 1715 | } |
1da177e4 | 1716 | |
81c3f413 | 1717 | /* Encode as an array of strings the string given with components |
e7a0444a | 1718 | * separated @sep, escaped with esc_enter and esc_exit. |
81c3f413 | 1719 | */ |
ddd1ea56 BF |
1720 | static __be32 nfsd4_encode_components_esc(struct xdr_stream *xdr, char sep, |
1721 | char *components, char esc_enter, | |
1722 | char esc_exit) | |
81c3f413 | 1723 | { |
ddd1ea56 | 1724 | __be32 *p; |
082d4bd7 BF |
1725 | __be32 pathlen; |
1726 | int pathlen_offset; | |
81c3f413 | 1727 | int strlen, count=0; |
e7a0444a | 1728 | char *str, *end, *next; |
81c3f413 BF |
1729 | |
1730 | dprintk("nfsd4_encode_components(%s)\n", components); | |
082d4bd7 BF |
1731 | |
1732 | pathlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
1733 | p = xdr_reserve_space(xdr, 4); |
1734 | if (!p) | |
81c3f413 | 1735 | return nfserr_resource; |
082d4bd7 BF |
1736 | p++; /* We will fill this in with @count later */ |
1737 | ||
81c3f413 BF |
1738 | end = str = components; |
1739 | while (*end) { | |
e7a0444a WAA |
1740 | bool found_esc = false; |
1741 | ||
1742 | /* try to parse as esc_start, ..., esc_end, sep */ | |
1743 | if (*str == esc_enter) { | |
1744 | for (; *end && (*end != esc_exit); end++) | |
1745 | /* find esc_exit or end of string */; | |
1746 | next = end + 1; | |
1747 | if (*end && (!*next || *next == sep)) { | |
1748 | str++; | |
1749 | found_esc = true; | |
1750 | } | |
1751 | } | |
1752 | ||
1753 | if (!found_esc) | |
1754 | for (; *end && (*end != sep); end++) | |
1755 | /* find sep or end of string */; | |
1756 | ||
81c3f413 BF |
1757 | strlen = end - str; |
1758 | if (strlen) { | |
ddd1ea56 BF |
1759 | p = xdr_reserve_space(xdr, strlen + 4); |
1760 | if (!p) | |
81c3f413 | 1761 | return nfserr_resource; |
0c0c267b | 1762 | p = xdr_encode_opaque(p, str, strlen); |
81c3f413 BF |
1763 | count++; |
1764 | } | |
1765 | else | |
1766 | end++; | |
1767 | str = end; | |
1768 | } | |
082d4bd7 BF |
1769 | pathlen = htonl(xdr->buf->len - pathlen_offset); |
1770 | write_bytes_to_xdr_buf(xdr->buf, pathlen_offset, &pathlen, 4); | |
81c3f413 BF |
1771 | return 0; |
1772 | } | |
1773 | ||
e7a0444a WAA |
1774 | /* Encode as an array of strings the string given with components |
1775 | * separated @sep. | |
1776 | */ | |
ddd1ea56 BF |
1777 | static __be32 nfsd4_encode_components(struct xdr_stream *xdr, char sep, |
1778 | char *components) | |
e7a0444a | 1779 | { |
ddd1ea56 | 1780 | return nfsd4_encode_components_esc(xdr, sep, components, 0, 0); |
e7a0444a WAA |
1781 | } |
1782 | ||
81c3f413 BF |
1783 | /* |
1784 | * encode a location element of a fs_locations structure | |
1785 | */ | |
ddd1ea56 BF |
1786 | static __be32 nfsd4_encode_fs_location4(struct xdr_stream *xdr, |
1787 | struct nfsd4_fs_location *location) | |
81c3f413 | 1788 | { |
b37ad28b | 1789 | __be32 status; |
81c3f413 | 1790 | |
ddd1ea56 | 1791 | status = nfsd4_encode_components_esc(xdr, ':', location->hosts, |
e7a0444a | 1792 | '[', ']'); |
81c3f413 BF |
1793 | if (status) |
1794 | return status; | |
ddd1ea56 | 1795 | status = nfsd4_encode_components(xdr, '/', location->path); |
81c3f413 BF |
1796 | if (status) |
1797 | return status; | |
81c3f413 BF |
1798 | return 0; |
1799 | } | |
1800 | ||
1801 | /* | |
ed748aac | 1802 | * Encode a path in RFC3530 'pathname4' format |
81c3f413 | 1803 | */ |
ddd1ea56 BF |
1804 | static __be32 nfsd4_encode_path(struct xdr_stream *xdr, |
1805 | const struct path *root, | |
1806 | const struct path *path) | |
81c3f413 | 1807 | { |
301f0268 | 1808 | struct path cur = *path; |
ddd1ea56 | 1809 | __be32 *p; |
ed748aac TM |
1810 | struct dentry **components = NULL; |
1811 | unsigned int ncomponents = 0; | |
1812 | __be32 err = nfserr_jukebox; | |
81c3f413 | 1813 | |
ed748aac | 1814 | dprintk("nfsd4_encode_components("); |
81c3f413 | 1815 | |
ed748aac TM |
1816 | path_get(&cur); |
1817 | /* First walk the path up to the nfsd root, and store the | |
1818 | * dentries/path components in an array. | |
1819 | */ | |
1820 | for (;;) { | |
1821 | if (cur.dentry == root->dentry && cur.mnt == root->mnt) | |
1822 | break; | |
1823 | if (cur.dentry == cur.mnt->mnt_root) { | |
1824 | if (follow_up(&cur)) | |
1825 | continue; | |
1826 | goto out_free; | |
1827 | } | |
1828 | if ((ncomponents & 15) == 0) { | |
1829 | struct dentry **new; | |
1830 | new = krealloc(components, | |
1831 | sizeof(*new) * (ncomponents + 16), | |
1832 | GFP_KERNEL); | |
1833 | if (!new) | |
1834 | goto out_free; | |
1835 | components = new; | |
1836 | } | |
1837 | components[ncomponents++] = cur.dentry; | |
1838 | cur.dentry = dget_parent(cur.dentry); | |
1839 | } | |
ddd1ea56 BF |
1840 | err = nfserr_resource; |
1841 | p = xdr_reserve_space(xdr, 4); | |
1842 | if (!p) | |
ed748aac | 1843 | goto out_free; |
c373b0a4 | 1844 | *p++ = cpu_to_be32(ncomponents); |
ed748aac TM |
1845 | |
1846 | while (ncomponents) { | |
1847 | struct dentry *dentry = components[ncomponents - 1]; | |
301f0268 | 1848 | unsigned int len; |
ed748aac | 1849 | |
301f0268 AV |
1850 | spin_lock(&dentry->d_lock); |
1851 | len = dentry->d_name.len; | |
ddd1ea56 BF |
1852 | p = xdr_reserve_space(xdr, len + 4); |
1853 | if (!p) { | |
301f0268 | 1854 | spin_unlock(&dentry->d_lock); |
ed748aac | 1855 | goto out_free; |
301f0268 | 1856 | } |
0c0c267b | 1857 | p = xdr_encode_opaque(p, dentry->d_name.name, len); |
ed748aac | 1858 | dprintk("/%s", dentry->d_name.name); |
301f0268 | 1859 | spin_unlock(&dentry->d_lock); |
ed748aac TM |
1860 | dput(dentry); |
1861 | ncomponents--; | |
81c3f413 | 1862 | } |
ed748aac | 1863 | |
ed748aac TM |
1864 | err = 0; |
1865 | out_free: | |
1866 | dprintk(")\n"); | |
1867 | while (ncomponents) | |
1868 | dput(components[--ncomponents]); | |
1869 | kfree(components); | |
1870 | path_put(&cur); | |
1871 | return err; | |
1872 | } | |
1873 | ||
ddd1ea56 BF |
1874 | static __be32 nfsd4_encode_fsloc_fsroot(struct xdr_stream *xdr, |
1875 | struct svc_rqst *rqstp, const struct path *path) | |
ed748aac TM |
1876 | { |
1877 | struct svc_export *exp_ps; | |
1878 | __be32 res; | |
1879 | ||
1880 | exp_ps = rqst_find_fsidzero_export(rqstp); | |
1881 | if (IS_ERR(exp_ps)) | |
1882 | return nfserrno(PTR_ERR(exp_ps)); | |
ddd1ea56 | 1883 | res = nfsd4_encode_path(xdr, &exp_ps->ex_path, path); |
ed748aac TM |
1884 | exp_put(exp_ps); |
1885 | return res; | |
81c3f413 BF |
1886 | } |
1887 | ||
1888 | /* | |
1889 | * encode a fs_locations structure | |
1890 | */ | |
ddd1ea56 BF |
1891 | static __be32 nfsd4_encode_fs_locations(struct xdr_stream *xdr, |
1892 | struct svc_rqst *rqstp, struct svc_export *exp) | |
81c3f413 | 1893 | { |
b37ad28b | 1894 | __be32 status; |
cc45f017 | 1895 | int i; |
ddd1ea56 | 1896 | __be32 *p; |
81c3f413 | 1897 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
81c3f413 | 1898 | |
ddd1ea56 | 1899 | status = nfsd4_encode_fsloc_fsroot(xdr, rqstp, &exp->ex_path); |
81c3f413 BF |
1900 | if (status) |
1901 | return status; | |
ddd1ea56 BF |
1902 | p = xdr_reserve_space(xdr, 4); |
1903 | if (!p) | |
81c3f413 | 1904 | return nfserr_resource; |
c373b0a4 | 1905 | *p++ = cpu_to_be32(fslocs->locations_count); |
81c3f413 | 1906 | for (i=0; i<fslocs->locations_count; i++) { |
ddd1ea56 | 1907 | status = nfsd4_encode_fs_location4(xdr, &fslocs->locations[i]); |
81c3f413 BF |
1908 | if (status) |
1909 | return status; | |
1910 | } | |
81c3f413 BF |
1911 | return 0; |
1912 | } | |
1da177e4 | 1913 | |
3d2544b1 BF |
1914 | static u32 nfs4_file_type(umode_t mode) |
1915 | { | |
1916 | switch (mode & S_IFMT) { | |
1917 | case S_IFIFO: return NF4FIFO; | |
1918 | case S_IFCHR: return NF4CHR; | |
1919 | case S_IFDIR: return NF4DIR; | |
1920 | case S_IFBLK: return NF4BLK; | |
1921 | case S_IFLNK: return NF4LNK; | |
1922 | case S_IFREG: return NF4REG; | |
1923 | case S_IFSOCK: return NF4SOCK; | |
1924 | default: return NF4BAD; | |
1925 | }; | |
1926 | } | |
1da177e4 | 1927 | |
b37ad28b | 1928 | static inline __be32 |
ddd1ea56 BF |
1929 | nfsd4_encode_aclname(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
1930 | struct nfs4_ace *ace) | |
1da177e4 | 1931 | { |
3554116d | 1932 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ddd1ea56 | 1933 | return nfs4_acl_write_who(xdr, ace->whotype); |
3554116d | 1934 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
ddd1ea56 | 1935 | return nfsd4_encode_group(xdr, rqstp, ace->who_gid); |
3554116d | 1936 | else |
ddd1ea56 | 1937 | return nfsd4_encode_user(xdr, rqstp, ace->who_uid); |
1da177e4 LT |
1938 | } |
1939 | ||
42ca0993 BF |
1940 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
1941 | FATTR4_WORD0_RDATTR_ERROR) | |
1942 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
1943 | ||
18032ca0 DQ |
1944 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
1945 | static inline __be32 | |
ddd1ea56 BF |
1946 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
1947 | void *context, int len) | |
18032ca0 | 1948 | { |
ddd1ea56 | 1949 | __be32 *p; |
18032ca0 | 1950 | |
ddd1ea56 BF |
1951 | p = xdr_reserve_space(xdr, len + 4 + 4 + 4); |
1952 | if (!p) | |
18032ca0 DQ |
1953 | return nfserr_resource; |
1954 | ||
1955 | /* | |
1956 | * For now we use a 0 here to indicate the null translation; in | |
1957 | * the future we may place a call to translation code here. | |
1958 | */ | |
c373b0a4 BF |
1959 | *p++ = cpu_to_be32(0); /* lfs */ |
1960 | *p++ = cpu_to_be32(0); /* pi */ | |
18032ca0 | 1961 | p = xdr_encode_opaque(p, context, len); |
18032ca0 DQ |
1962 | return 0; |
1963 | } | |
1964 | #else | |
1965 | static inline __be32 | |
ddd1ea56 BF |
1966 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
1967 | void *context, int len) | |
18032ca0 DQ |
1968 | { return 0; } |
1969 | #endif | |
1970 | ||
b37ad28b | 1971 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
42ca0993 BF |
1972 | { |
1973 | /* As per referral draft: */ | |
1974 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
1975 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
1976 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
1977 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
1978 | *rdattr_err = NFSERR_MOVED; | |
1979 | else | |
1980 | return nfserr_moved; | |
1981 | } | |
1982 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
1983 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
1984 | return 0; | |
1985 | } | |
1da177e4 | 1986 | |
ae7095a7 BF |
1987 | |
1988 | static int get_parent_attributes(struct svc_export *exp, struct kstat *stat) | |
1989 | { | |
1990 | struct path path = exp->ex_path; | |
1991 | int err; | |
1992 | ||
1993 | path_get(&path); | |
1994 | while (follow_up(&path)) { | |
1995 | if (path.dentry != path.mnt->mnt_root) | |
1996 | break; | |
1997 | } | |
3dadecce | 1998 | err = vfs_getattr(&path, stat); |
ae7095a7 BF |
1999 | path_put(&path); |
2000 | return err; | |
2001 | } | |
2002 | ||
1da177e4 LT |
2003 | /* |
2004 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
2005 | * ourselves. | |
1da177e4 | 2006 | */ |
da2ebce6 | 2007 | static __be32 |
d5184658 BF |
2008 | nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp, |
2009 | struct svc_export *exp, | |
2010 | struct dentry *dentry, u32 *bmval, | |
406a7ea9 | 2011 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
2012 | { |
2013 | u32 bmval0 = bmval[0]; | |
2014 | u32 bmval1 = bmval[1]; | |
7e705706 | 2015 | u32 bmval2 = bmval[2]; |
1da177e4 | 2016 | struct kstat stat; |
d50e6136 | 2017 | struct svc_fh *tempfh = NULL; |
1da177e4 | 2018 | struct kstatfs statfs; |
ddd1ea56 | 2019 | __be32 *p; |
1fcea5b2 | 2020 | int starting_len = xdr->buf->len; |
082d4bd7 BF |
2021 | int attrlen_offset; |
2022 | __be32 attrlen; | |
1da177e4 LT |
2023 | u32 dummy; |
2024 | u64 dummy64; | |
42ca0993 | 2025 | u32 rdattr_err = 0; |
b37ad28b | 2026 | __be32 status; |
b8dd7b9a | 2027 | int err; |
1da177e4 LT |
2028 | int aclsupport = 0; |
2029 | struct nfs4_acl *acl = NULL; | |
18032ca0 DQ |
2030 | void *context = NULL; |
2031 | int contextlen; | |
2032 | bool contextsupport = false; | |
7e705706 AA |
2033 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
2034 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
2035 | struct path path = { |
2036 | .mnt = exp->ex_path.mnt, | |
2037 | .dentry = dentry, | |
2038 | }; | |
3d733711 | 2039 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
1da177e4 LT |
2040 | |
2041 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
7e705706 AA |
2042 | BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); |
2043 | BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); | |
2044 | BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); | |
1da177e4 | 2045 | |
42ca0993 | 2046 | if (exp->ex_fslocs.migrated) { |
7e705706 | 2047 | BUG_ON(bmval[2]); |
42ca0993 BF |
2048 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); |
2049 | if (status) | |
2050 | goto out; | |
2051 | } | |
2052 | ||
3dadecce | 2053 | err = vfs_getattr(&path, &stat); |
b8dd7b9a | 2054 | if (err) |
1da177e4 | 2055 | goto out_nfserr; |
12337901 CH |
2056 | if ((bmval0 & (FATTR4_WORD0_FILES_AVAIL | FATTR4_WORD0_FILES_FREE | |
2057 | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
2058 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
2059 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 2060 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 2061 | if (err) |
1da177e4 LT |
2062 | goto out_nfserr; |
2063 | } | |
2064 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
d50e6136 BF |
2065 | tempfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); |
2066 | status = nfserr_jukebox; | |
2067 | if (!tempfh) | |
2068 | goto out; | |
2069 | fh_init(tempfh, NFS4_FHSIZE); | |
2070 | status = fh_compose(tempfh, exp, dentry, NULL); | |
1da177e4 LT |
2071 | if (status) |
2072 | goto out; | |
d50e6136 | 2073 | fhp = tempfh; |
1da177e4 LT |
2074 | } |
2075 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
2076 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
b8dd7b9a AV |
2077 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
2078 | aclsupport = (err == 0); | |
1da177e4 | 2079 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 2080 | if (err == -EOPNOTSUPP) |
1da177e4 | 2081 | bmval0 &= ~FATTR4_WORD0_ACL; |
b8dd7b9a | 2082 | else if (err == -EINVAL) { |
1da177e4 LT |
2083 | status = nfserr_attrnotsupp; |
2084 | goto out; | |
b8dd7b9a | 2085 | } else if (err != 0) |
1da177e4 LT |
2086 | goto out_nfserr; |
2087 | } | |
2088 | } | |
1da177e4 | 2089 | |
18032ca0 DQ |
2090 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
2091 | if ((bmval[2] & FATTR4_WORD2_SECURITY_LABEL) || | |
2092 | bmval[0] & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
2093 | err = security_inode_getsecctx(dentry->d_inode, | |
2094 | &context, &contextlen); | |
2095 | contextsupport = (err == 0); | |
2096 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { | |
2097 | if (err == -EOPNOTSUPP) | |
2098 | bmval2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2099 | else if (err) | |
2100 | goto out_nfserr; | |
2101 | } | |
2102 | } | |
2103 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ | |
2104 | ||
2b44f1ba | 2105 | if (bmval2) { |
ddd1ea56 BF |
2106 | p = xdr_reserve_space(xdr, 16); |
2107 | if (!p) | |
2b44f1ba | 2108 | goto out_resource; |
c373b0a4 BF |
2109 | *p++ = cpu_to_be32(3); |
2110 | *p++ = cpu_to_be32(bmval0); | |
2111 | *p++ = cpu_to_be32(bmval1); | |
2112 | *p++ = cpu_to_be32(bmval2); | |
2b44f1ba | 2113 | } else if (bmval1) { |
ddd1ea56 BF |
2114 | p = xdr_reserve_space(xdr, 12); |
2115 | if (!p) | |
2b44f1ba | 2116 | goto out_resource; |
c373b0a4 BF |
2117 | *p++ = cpu_to_be32(2); |
2118 | *p++ = cpu_to_be32(bmval0); | |
2119 | *p++ = cpu_to_be32(bmval1); | |
7e705706 | 2120 | } else { |
ddd1ea56 BF |
2121 | p = xdr_reserve_space(xdr, 8); |
2122 | if (!p) | |
2b44f1ba | 2123 | goto out_resource; |
c373b0a4 BF |
2124 | *p++ = cpu_to_be32(1); |
2125 | *p++ = cpu_to_be32(bmval0); | |
7e705706 | 2126 | } |
082d4bd7 BF |
2127 | |
2128 | attrlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
2129 | p = xdr_reserve_space(xdr, 4); |
2130 | if (!p) | |
2131 | goto out_resource; | |
082d4bd7 | 2132 | p++; /* to be backfilled later */ |
1da177e4 LT |
2133 | |
2134 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
7e705706 AA |
2135 | u32 word0 = nfsd_suppattrs0(minorversion); |
2136 | u32 word1 = nfsd_suppattrs1(minorversion); | |
2137 | u32 word2 = nfsd_suppattrs2(minorversion); | |
2138 | ||
42ca0993 BF |
2139 | if (!aclsupport) |
2140 | word0 &= ~FATTR4_WORD0_ACL; | |
18032ca0 DQ |
2141 | if (!contextsupport) |
2142 | word2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
7e705706 | 2143 | if (!word2) { |
ddd1ea56 BF |
2144 | p = xdr_reserve_space(xdr, 12); |
2145 | if (!p) | |
2b44f1ba | 2146 | goto out_resource; |
c373b0a4 BF |
2147 | *p++ = cpu_to_be32(2); |
2148 | *p++ = cpu_to_be32(word0); | |
2149 | *p++ = cpu_to_be32(word1); | |
7e705706 | 2150 | } else { |
ddd1ea56 BF |
2151 | p = xdr_reserve_space(xdr, 16); |
2152 | if (!p) | |
2b44f1ba | 2153 | goto out_resource; |
c373b0a4 BF |
2154 | *p++ = cpu_to_be32(3); |
2155 | *p++ = cpu_to_be32(word0); | |
2156 | *p++ = cpu_to_be32(word1); | |
2157 | *p++ = cpu_to_be32(word2); | |
7e705706 | 2158 | } |
1da177e4 LT |
2159 | } |
2160 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
ddd1ea56 BF |
2161 | p = xdr_reserve_space(xdr, 4); |
2162 | if (!p) | |
1da177e4 | 2163 | goto out_resource; |
3d2544b1 | 2164 | dummy = nfs4_file_type(stat.mode); |
6b6d8137 BF |
2165 | if (dummy == NF4BAD) { |
2166 | status = nfserr_serverfault; | |
2167 | goto out; | |
2168 | } | |
c373b0a4 | 2169 | *p++ = cpu_to_be32(dummy); |
1da177e4 LT |
2170 | } |
2171 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
ddd1ea56 BF |
2172 | p = xdr_reserve_space(xdr, 4); |
2173 | if (!p) | |
1da177e4 | 2174 | goto out_resource; |
49640001 | 2175 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
c373b0a4 | 2176 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT); |
49640001 | 2177 | else |
c373b0a4 BF |
2178 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT| |
2179 | NFS4_FH_VOL_RENAME); | |
1da177e4 LT |
2180 | } |
2181 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
ddd1ea56 BF |
2182 | p = xdr_reserve_space(xdr, 8); |
2183 | if (!p) | |
1da177e4 | 2184 | goto out_resource; |
d05d5744 | 2185 | p = encode_change(p, &stat, dentry->d_inode); |
1da177e4 LT |
2186 | } |
2187 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
ddd1ea56 BF |
2188 | p = xdr_reserve_space(xdr, 8); |
2189 | if (!p) | |
1da177e4 | 2190 | goto out_resource; |
b64c7f3b | 2191 | p = xdr_encode_hyper(p, stat.size); |
1da177e4 LT |
2192 | } |
2193 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
ddd1ea56 BF |
2194 | p = xdr_reserve_space(xdr, 4); |
2195 | if (!p) | |
1da177e4 | 2196 | goto out_resource; |
c373b0a4 | 2197 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2198 | } |
2199 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
ddd1ea56 BF |
2200 | p = xdr_reserve_space(xdr, 4); |
2201 | if (!p) | |
1da177e4 | 2202 | goto out_resource; |
c373b0a4 | 2203 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2204 | } |
2205 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
ddd1ea56 BF |
2206 | p = xdr_reserve_space(xdr, 4); |
2207 | if (!p) | |
1da177e4 | 2208 | goto out_resource; |
c373b0a4 | 2209 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2210 | } |
2211 | if (bmval0 & FATTR4_WORD0_FSID) { | |
ddd1ea56 BF |
2212 | p = xdr_reserve_space(xdr, 16); |
2213 | if (!p) | |
1da177e4 | 2214 | goto out_resource; |
42ca0993 | 2215 | if (exp->ex_fslocs.migrated) { |
b64c7f3b BF |
2216 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MAJOR); |
2217 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
2218 | } else switch(fsid_source(fhp)) { |
2219 | case FSIDSOURCE_FSID: | |
b64c7f3b BF |
2220 | p = xdr_encode_hyper(p, (u64)exp->ex_fsid); |
2221 | p = xdr_encode_hyper(p, (u64)0); | |
af6a4e28 N |
2222 | break; |
2223 | case FSIDSOURCE_DEV: | |
c373b0a4 BF |
2224 | *p++ = cpu_to_be32(0); |
2225 | *p++ = cpu_to_be32(MAJOR(stat.dev)); | |
2226 | *p++ = cpu_to_be32(0); | |
2227 | *p++ = cpu_to_be32(MINOR(stat.dev)); | |
af6a4e28 N |
2228 | break; |
2229 | case FSIDSOURCE_UUID: | |
94eb3689 KM |
2230 | p = xdr_encode_opaque_fixed(p, exp->ex_uuid, |
2231 | EX_UUID_LEN); | |
af6a4e28 | 2232 | break; |
1da177e4 LT |
2233 | } |
2234 | } | |
2235 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
ddd1ea56 BF |
2236 | p = xdr_reserve_space(xdr, 4); |
2237 | if (!p) | |
1da177e4 | 2238 | goto out_resource; |
c373b0a4 | 2239 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2240 | } |
2241 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
ddd1ea56 BF |
2242 | p = xdr_reserve_space(xdr, 4); |
2243 | if (!p) | |
1da177e4 | 2244 | goto out_resource; |
c373b0a4 | 2245 | *p++ = cpu_to_be32(nn->nfsd4_lease); |
1da177e4 LT |
2246 | } |
2247 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
ddd1ea56 BF |
2248 | p = xdr_reserve_space(xdr, 4); |
2249 | if (!p) | |
1da177e4 | 2250 | goto out_resource; |
c373b0a4 | 2251 | *p++ = cpu_to_be32(rdattr_err); |
1da177e4 LT |
2252 | } |
2253 | if (bmval0 & FATTR4_WORD0_ACL) { | |
2254 | struct nfs4_ace *ace; | |
1da177e4 LT |
2255 | |
2256 | if (acl == NULL) { | |
ddd1ea56 BF |
2257 | p = xdr_reserve_space(xdr, 4); |
2258 | if (!p) | |
1da177e4 LT |
2259 | goto out_resource; |
2260 | ||
c373b0a4 | 2261 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2262 | goto out_acl; |
2263 | } | |
ddd1ea56 BF |
2264 | p = xdr_reserve_space(xdr, 4); |
2265 | if (!p) | |
1da177e4 | 2266 | goto out_resource; |
c373b0a4 | 2267 | *p++ = cpu_to_be32(acl->naces); |
1da177e4 | 2268 | |
28e05dd8 | 2269 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
ddd1ea56 BF |
2270 | p = xdr_reserve_space(xdr, 4*3); |
2271 | if (!p) | |
1da177e4 | 2272 | goto out_resource; |
c373b0a4 BF |
2273 | *p++ = cpu_to_be32(ace->type); |
2274 | *p++ = cpu_to_be32(ace->flag); | |
2275 | *p++ = cpu_to_be32(ace->access_mask & | |
2276 | NFS4_ACE_MASK_ALL); | |
ddd1ea56 | 2277 | status = nfsd4_encode_aclname(xdr, rqstp, ace); |
1da177e4 LT |
2278 | if (status) |
2279 | goto out; | |
2280 | } | |
2281 | } | |
2282 | out_acl: | |
2283 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
ddd1ea56 BF |
2284 | p = xdr_reserve_space(xdr, 4); |
2285 | if (!p) | |
1da177e4 | 2286 | goto out_resource; |
c373b0a4 | 2287 | *p++ = cpu_to_be32(aclsupport ? |
1da177e4 LT |
2288 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); |
2289 | } | |
2290 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
ddd1ea56 BF |
2291 | p = xdr_reserve_space(xdr, 4); |
2292 | if (!p) | |
1da177e4 | 2293 | goto out_resource; |
c373b0a4 | 2294 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2295 | } |
2296 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
ddd1ea56 BF |
2297 | p = xdr_reserve_space(xdr, 4); |
2298 | if (!p) | |
1da177e4 | 2299 | goto out_resource; |
c373b0a4 | 2300 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2301 | } |
2302 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
ddd1ea56 BF |
2303 | p = xdr_reserve_space(xdr, 4); |
2304 | if (!p) | |
1da177e4 | 2305 | goto out_resource; |
c373b0a4 | 2306 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2307 | } |
2308 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
ddd1ea56 BF |
2309 | p = xdr_reserve_space(xdr, 4); |
2310 | if (!p) | |
1da177e4 | 2311 | goto out_resource; |
c373b0a4 | 2312 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2313 | } |
2314 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
ddd1ea56 BF |
2315 | p = xdr_reserve_space(xdr, fhp->fh_handle.fh_size + 4); |
2316 | if (!p) | |
1da177e4 | 2317 | goto out_resource; |
0c0c267b BF |
2318 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, |
2319 | fhp->fh_handle.fh_size); | |
1da177e4 LT |
2320 | } |
2321 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
ddd1ea56 BF |
2322 | p = xdr_reserve_space(xdr, 8); |
2323 | if (!p) | |
1da177e4 | 2324 | goto out_resource; |
b64c7f3b | 2325 | p = xdr_encode_hyper(p, stat.ino); |
1da177e4 LT |
2326 | } |
2327 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
ddd1ea56 BF |
2328 | p = xdr_reserve_space(xdr, 8); |
2329 | if (!p) | |
1da177e4 | 2330 | goto out_resource; |
b64c7f3b | 2331 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
2332 | } |
2333 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
ddd1ea56 BF |
2334 | p = xdr_reserve_space(xdr, 8); |
2335 | if (!p) | |
1da177e4 | 2336 | goto out_resource; |
b64c7f3b | 2337 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
2338 | } |
2339 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
ddd1ea56 BF |
2340 | p = xdr_reserve_space(xdr, 8); |
2341 | if (!p) | |
1da177e4 | 2342 | goto out_resource; |
b64c7f3b | 2343 | p = xdr_encode_hyper(p, (u64) statfs.f_files); |
1da177e4 | 2344 | } |
81c3f413 | 2345 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
ddd1ea56 | 2346 | status = nfsd4_encode_fs_locations(xdr, rqstp, exp); |
81c3f413 BF |
2347 | if (status) |
2348 | goto out; | |
2349 | } | |
1da177e4 | 2350 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
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_MAXFILESIZE) { | |
ddd1ea56 BF |
2357 | p = xdr_reserve_space(xdr, 8); |
2358 | if (!p) | |
1da177e4 | 2359 | goto out_resource; |
b64c7f3b | 2360 | p = xdr_encode_hyper(p, exp->ex_path.mnt->mnt_sb->s_maxbytes); |
1da177e4 LT |
2361 | } |
2362 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
ddd1ea56 BF |
2363 | p = xdr_reserve_space(xdr, 4); |
2364 | if (!p) | |
1da177e4 | 2365 | goto out_resource; |
c373b0a4 | 2366 | *p++ = cpu_to_be32(255); |
1da177e4 LT |
2367 | } |
2368 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
ddd1ea56 BF |
2369 | p = xdr_reserve_space(xdr, 4); |
2370 | if (!p) | |
1da177e4 | 2371 | goto out_resource; |
c373b0a4 | 2372 | *p++ = cpu_to_be32(statfs.f_namelen); |
1da177e4 LT |
2373 | } |
2374 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
ddd1ea56 BF |
2375 | p = xdr_reserve_space(xdr, 8); |
2376 | if (!p) | |
1da177e4 | 2377 | goto out_resource; |
b64c7f3b | 2378 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2379 | } |
2380 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
ddd1ea56 BF |
2381 | p = xdr_reserve_space(xdr, 8); |
2382 | if (!p) | |
1da177e4 | 2383 | goto out_resource; |
b64c7f3b | 2384 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2385 | } |
2386 | if (bmval1 & FATTR4_WORD1_MODE) { | |
ddd1ea56 BF |
2387 | p = xdr_reserve_space(xdr, 4); |
2388 | if (!p) | |
1da177e4 | 2389 | goto out_resource; |
c373b0a4 | 2390 | *p++ = cpu_to_be32(stat.mode & S_IALLUGO); |
1da177e4 LT |
2391 | } |
2392 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
ddd1ea56 BF |
2393 | p = xdr_reserve_space(xdr, 4); |
2394 | if (!p) | |
1da177e4 | 2395 | goto out_resource; |
c373b0a4 | 2396 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2397 | } |
2398 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
ddd1ea56 BF |
2399 | p = xdr_reserve_space(xdr, 4); |
2400 | if (!p) | |
1da177e4 | 2401 | goto out_resource; |
c373b0a4 | 2402 | *p++ = cpu_to_be32(stat.nlink); |
1da177e4 LT |
2403 | } |
2404 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
ddd1ea56 | 2405 | status = nfsd4_encode_user(xdr, rqstp, stat.uid); |
1da177e4 LT |
2406 | if (status) |
2407 | goto out; | |
2408 | } | |
2409 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
ddd1ea56 | 2410 | status = nfsd4_encode_group(xdr, rqstp, stat.gid); |
1da177e4 LT |
2411 | if (status) |
2412 | goto out; | |
2413 | } | |
2414 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
ddd1ea56 BF |
2415 | p = xdr_reserve_space(xdr, 8); |
2416 | if (!p) | |
1da177e4 | 2417 | goto out_resource; |
c373b0a4 BF |
2418 | *p++ = cpu_to_be32((u32) MAJOR(stat.rdev)); |
2419 | *p++ = cpu_to_be32((u32) MINOR(stat.rdev)); | |
1da177e4 LT |
2420 | } |
2421 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
ddd1ea56 BF |
2422 | p = xdr_reserve_space(xdr, 8); |
2423 | if (!p) | |
1da177e4 LT |
2424 | goto out_resource; |
2425 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
b64c7f3b | 2426 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2427 | } |
2428 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
ddd1ea56 BF |
2429 | p = xdr_reserve_space(xdr, 8); |
2430 | if (!p) | |
1da177e4 LT |
2431 | goto out_resource; |
2432 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
b64c7f3b | 2433 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2434 | } |
2435 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
ddd1ea56 BF |
2436 | p = xdr_reserve_space(xdr, 8); |
2437 | if (!p) | |
1da177e4 LT |
2438 | goto out_resource; |
2439 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
b64c7f3b | 2440 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2441 | } |
2442 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
ddd1ea56 BF |
2443 | p = xdr_reserve_space(xdr, 8); |
2444 | if (!p) | |
1da177e4 LT |
2445 | goto out_resource; |
2446 | dummy64 = (u64)stat.blocks << 9; | |
b64c7f3b | 2447 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2448 | } |
2449 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
ddd1ea56 BF |
2450 | p = xdr_reserve_space(xdr, 12); |
2451 | if (!p) | |
1da177e4 | 2452 | goto out_resource; |
b64c7f3b | 2453 | p = xdr_encode_hyper(p, (s64)stat.atime.tv_sec); |
c373b0a4 | 2454 | *p++ = cpu_to_be32(stat.atime.tv_nsec); |
1da177e4 LT |
2455 | } |
2456 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
ddd1ea56 BF |
2457 | p = xdr_reserve_space(xdr, 12); |
2458 | if (!p) | |
1da177e4 | 2459 | goto out_resource; |
c373b0a4 BF |
2460 | *p++ = cpu_to_be32(0); |
2461 | *p++ = cpu_to_be32(1); | |
2462 | *p++ = cpu_to_be32(0); | |
1da177e4 LT |
2463 | } |
2464 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
ddd1ea56 BF |
2465 | p = xdr_reserve_space(xdr, 12); |
2466 | if (!p) | |
1da177e4 | 2467 | goto out_resource; |
b64c7f3b | 2468 | p = xdr_encode_hyper(p, (s64)stat.ctime.tv_sec); |
c373b0a4 | 2469 | *p++ = cpu_to_be32(stat.ctime.tv_nsec); |
1da177e4 LT |
2470 | } |
2471 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
ddd1ea56 BF |
2472 | p = xdr_reserve_space(xdr, 12); |
2473 | if (!p) | |
1da177e4 | 2474 | goto out_resource; |
b64c7f3b | 2475 | p = xdr_encode_hyper(p, (s64)stat.mtime.tv_sec); |
c373b0a4 | 2476 | *p++ = cpu_to_be32(stat.mtime.tv_nsec); |
1da177e4 LT |
2477 | } |
2478 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
ddd1ea56 BF |
2479 | p = xdr_reserve_space(xdr, 8); |
2480 | if (!p) | |
1da177e4 | 2481 | goto out_resource; |
406a7ea9 FF |
2482 | /* |
2483 | * Get parent's attributes if not ignoring crossmount | |
2484 | * and this is the root of a cross-mounted filesystem. | |
2485 | */ | |
2486 | if (ignore_crossmnt == 0 && | |
ae7095a7 BF |
2487 | dentry == exp->ex_path.mnt->mnt_root) |
2488 | get_parent_attributes(exp, &stat); | |
b64c7f3b | 2489 | p = xdr_encode_hyper(p, stat.ino); |
1da177e4 | 2490 | } |
18032ca0 | 2491 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { |
ddd1ea56 BF |
2492 | status = nfsd4_encode_security_label(xdr, rqstp, context, |
2493 | contextlen); | |
18032ca0 DQ |
2494 | if (status) |
2495 | goto out; | |
2496 | } | |
8c18f205 | 2497 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
ddd1ea56 BF |
2498 | p = xdr_reserve_space(xdr, 16); |
2499 | if (!p) | |
de3997a7 | 2500 | goto out_resource; |
c373b0a4 BF |
2501 | *p++ = cpu_to_be32(3); |
2502 | *p++ = cpu_to_be32(NFSD_SUPPATTR_EXCLCREAT_WORD0); | |
2503 | *p++ = cpu_to_be32(NFSD_SUPPATTR_EXCLCREAT_WORD1); | |
2504 | *p++ = cpu_to_be32(NFSD_SUPPATTR_EXCLCREAT_WORD2); | |
8c18f205 | 2505 | } |
7e705706 | 2506 | |
082d4bd7 BF |
2507 | attrlen = htonl(xdr->buf->len - attrlen_offset - 4); |
2508 | write_bytes_to_xdr_buf(xdr->buf, attrlen_offset, &attrlen, 4); | |
1da177e4 LT |
2509 | status = nfs_ok; |
2510 | ||
2511 | out: | |
ba4e55bb | 2512 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
18032ca0 DQ |
2513 | if (context) |
2514 | security_release_secctx(context, contextlen); | |
ba4e55bb | 2515 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ |
28e05dd8 | 2516 | kfree(acl); |
18df11d0 | 2517 | if (tempfh) { |
d50e6136 | 2518 | fh_put(tempfh); |
18df11d0 YZ |
2519 | kfree(tempfh); |
2520 | } | |
1fcea5b2 BF |
2521 | if (status) |
2522 | xdr_truncate_encode(xdr, starting_len); | |
1da177e4 LT |
2523 | return status; |
2524 | out_nfserr: | |
b8dd7b9a | 2525 | status = nfserrno(err); |
1da177e4 LT |
2526 | goto out; |
2527 | out_resource: | |
1da177e4 LT |
2528 | status = nfserr_resource; |
2529 | goto out; | |
1da177e4 LT |
2530 | } |
2531 | ||
2825a7f9 BF |
2532 | static void svcxdr_init_encode_from_buffer(struct xdr_stream *xdr, |
2533 | struct xdr_buf *buf, __be32 *p, int bytes) | |
2534 | { | |
2535 | xdr->scratch.iov_len = 0; | |
2536 | memset(buf, 0, sizeof(struct xdr_buf)); | |
2537 | buf->head[0].iov_base = p; | |
2538 | buf->head[0].iov_len = 0; | |
2539 | buf->len = 0; | |
2540 | xdr->buf = buf; | |
2541 | xdr->iov = buf->head; | |
2542 | xdr->p = p; | |
2543 | xdr->end = (void *)p + bytes; | |
2544 | buf->buflen = bytes; | |
2545 | } | |
2546 | ||
d5184658 BF |
2547 | __be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words, |
2548 | struct svc_fh *fhp, struct svc_export *exp, | |
2549 | struct dentry *dentry, u32 *bmval, | |
2550 | struct svc_rqst *rqstp, int ignore_crossmnt) | |
2551 | { | |
2825a7f9 | 2552 | struct xdr_buf dummy; |
d5184658 BF |
2553 | struct xdr_stream xdr; |
2554 | __be32 ret; | |
2555 | ||
2825a7f9 | 2556 | svcxdr_init_encode_from_buffer(&xdr, &dummy, *p, words << 2); |
d5184658 BF |
2557 | ret = nfsd4_encode_fattr(&xdr, fhp, exp, dentry, bmval, rqstp, |
2558 | ignore_crossmnt); | |
2559 | *p = xdr.p; | |
2560 | return ret; | |
2561 | } | |
2562 | ||
c0ce6ec8 BF |
2563 | static inline int attributes_need_mount(u32 *bmval) |
2564 | { | |
2565 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2566 | return 1; | |
2567 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2568 | return 1; | |
2569 | return 0; | |
2570 | } | |
2571 | ||
b37ad28b | 2572 | static __be32 |
561f0ed4 BF |
2573 | nfsd4_encode_dirent_fattr(struct xdr_stream *xdr, struct nfsd4_readdir *cd, |
2574 | const char *name, int namlen) | |
1da177e4 LT |
2575 | { |
2576 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2577 | struct dentry *dentry; | |
b37ad28b | 2578 | __be32 nfserr; |
406a7ea9 | 2579 | int ignore_crossmnt = 0; |
1da177e4 LT |
2580 | |
2581 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
2582 | if (IS_ERR(dentry)) | |
2583 | return nfserrno(PTR_ERR(dentry)); | |
b2c0cea6 BF |
2584 | if (!dentry->d_inode) { |
2585 | /* | |
2586 | * nfsd_buffered_readdir drops the i_mutex between | |
2587 | * readdir and calling this callback, leaving a window | |
2588 | * where this directory entry could have gone away. | |
2589 | */ | |
2590 | dput(dentry); | |
2591 | return nfserr_noent; | |
2592 | } | |
1da177e4 LT |
2593 | |
2594 | exp_get(exp); | |
406a7ea9 FF |
2595 | /* |
2596 | * In the case of a mountpoint, the client may be asking for | |
2597 | * attributes that are only properties of the underlying filesystem | |
2598 | * as opposed to the cross-mounted file system. In such a case, | |
2599 | * we will not follow the cross mount and will fill the attribtutes | |
2600 | * directly from the mountpoint dentry. | |
2601 | */ | |
3227fa41 | 2602 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
2603 | int err; |
2604 | ||
3227fa41 BF |
2605 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
2606 | && !attributes_need_mount(cd->rd_bmval)) { | |
2607 | ignore_crossmnt = 1; | |
2608 | goto out_encode; | |
2609 | } | |
dcb488a3 AA |
2610 | /* |
2611 | * Why the heck aren't we just using nfsd_lookup?? | |
2612 | * Different "."/".." handling? Something else? | |
2613 | * At least, add a comment here to explain.... | |
2614 | */ | |
021d3a72 BF |
2615 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
2616 | if (err) { | |
2617 | nfserr = nfserrno(err); | |
1da177e4 LT |
2618 | goto out_put; |
2619 | } | |
dcb488a3 AA |
2620 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
2621 | if (nfserr) | |
2622 | goto out_put; | |
1da177e4 LT |
2623 | |
2624 | } | |
3227fa41 | 2625 | out_encode: |
561f0ed4 | 2626 | nfserr = nfsd4_encode_fattr(xdr, NULL, exp, dentry, cd->rd_bmval, |
406a7ea9 | 2627 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
2628 | out_put: |
2629 | dput(dentry); | |
2630 | exp_put(exp); | |
2631 | return nfserr; | |
2632 | } | |
2633 | ||
2ebbc012 | 2634 | static __be32 * |
561f0ed4 | 2635 | nfsd4_encode_rdattr_error(struct xdr_stream *xdr, __be32 nfserr) |
1da177e4 | 2636 | { |
561f0ed4 BF |
2637 | __be32 *p; |
2638 | ||
2639 | p = xdr_reserve_space(xdr, 6); | |
2640 | if (!p) | |
1da177e4 LT |
2641 | return NULL; |
2642 | *p++ = htonl(2); | |
2643 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
2644 | *p++ = htonl(0); /* bmval1 */ | |
2645 | ||
87915c64 | 2646 | *p++ = htonl(4); /* attribute length */ |
1da177e4 | 2647 | *p++ = nfserr; /* no htonl */ |
1da177e4 LT |
2648 | return p; |
2649 | } | |
2650 | ||
2651 | static int | |
a0ad13ef N |
2652 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
2653 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 2654 | { |
a0ad13ef | 2655 | struct readdir_cd *ccd = ccdv; |
1da177e4 | 2656 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
561f0ed4 BF |
2657 | struct xdr_stream *xdr = cd->xdr; |
2658 | int start_offset = xdr->buf->len; | |
2659 | int cookie_offset; | |
2660 | int entry_bytes; | |
b37ad28b | 2661 | __be32 nfserr = nfserr_toosmall; |
561f0ed4 BF |
2662 | __be64 wire_offset; |
2663 | __be32 *p; | |
1da177e4 LT |
2664 | |
2665 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
2666 | if (name && isdotent(name, namlen)) { | |
2667 | cd->common.err = nfs_ok; | |
2668 | return 0; | |
2669 | } | |
2670 | ||
561f0ed4 BF |
2671 | if (cd->cookie_offset) { |
2672 | wire_offset = cpu_to_be64(offset); | |
2673 | write_bytes_to_xdr_buf(xdr->buf, cd->cookie_offset, | |
2674 | &wire_offset, 8); | |
2675 | } | |
1da177e4 | 2676 | |
561f0ed4 BF |
2677 | p = xdr_reserve_space(xdr, 4); |
2678 | if (!p) | |
1da177e4 | 2679 | goto fail; |
1da177e4 | 2680 | *p++ = xdr_one; /* mark entry present */ |
561f0ed4 BF |
2681 | cookie_offset = xdr->buf->len; |
2682 | p = xdr_reserve_space(xdr, 3*4 + namlen); | |
2683 | if (!p) | |
2684 | goto fail; | |
1da177e4 LT |
2685 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
2686 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
2687 | ||
561f0ed4 | 2688 | nfserr = nfsd4_encode_dirent_fattr(xdr, cd, name, namlen); |
1da177e4 LT |
2689 | switch (nfserr) { |
2690 | case nfs_ok: | |
1da177e4 LT |
2691 | break; |
2692 | case nfserr_resource: | |
2693 | nfserr = nfserr_toosmall; | |
2694 | goto fail; | |
b2c0cea6 | 2695 | case nfserr_noent: |
f41c5ad2 | 2696 | xdr_truncate_encode(xdr, start_offset); |
b2c0cea6 | 2697 | goto skip_entry; |
1da177e4 LT |
2698 | default: |
2699 | /* | |
2700 | * If the client requested the RDATTR_ERROR attribute, | |
2701 | * we stuff the error code into this attribute | |
2702 | * and continue. If this attribute was not requested, | |
2703 | * then in accordance with the spec, we fail the | |
2704 | * entire READDIR operation(!) | |
2705 | */ | |
2706 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
2707 | goto fail; | |
561f0ed4 | 2708 | p = nfsd4_encode_rdattr_error(xdr, nfserr); |
34081efc FI |
2709 | if (p == NULL) { |
2710 | nfserr = nfserr_toosmall; | |
1da177e4 | 2711 | goto fail; |
34081efc | 2712 | } |
1da177e4 | 2713 | } |
561f0ed4 BF |
2714 | nfserr = nfserr_toosmall; |
2715 | entry_bytes = xdr->buf->len - start_offset; | |
2716 | if (entry_bytes > cd->rd_maxcount) | |
2717 | goto fail; | |
2718 | cd->rd_maxcount -= entry_bytes; | |
3b299709 BF |
2719 | if (!cd->rd_dircount) |
2720 | goto fail; | |
2721 | cd->rd_dircount--; | |
561f0ed4 | 2722 | cd->cookie_offset = cookie_offset; |
b2c0cea6 | 2723 | skip_entry: |
1da177e4 LT |
2724 | cd->common.err = nfs_ok; |
2725 | return 0; | |
2726 | fail: | |
561f0ed4 | 2727 | xdr_truncate_encode(xdr, start_offset); |
1da177e4 LT |
2728 | cd->common.err = nfserr; |
2729 | return -EINVAL; | |
2730 | } | |
2731 | ||
d0a381dd BF |
2732 | static __be32 |
2733 | nfsd4_encode_stateid(struct xdr_stream *xdr, stateid_t *sid) | |
e2f282b9 | 2734 | { |
bc749ca4 | 2735 | __be32 *p; |
e2f282b9 | 2736 | |
d0a381dd BF |
2737 | p = xdr_reserve_space(xdr, sizeof(stateid_t)); |
2738 | if (!p) | |
2739 | return nfserr_resource; | |
c373b0a4 | 2740 | *p++ = cpu_to_be32(sid->si_generation); |
0c0c267b BF |
2741 | p = xdr_encode_opaque_fixed(p, &sid->si_opaque, |
2742 | sizeof(stateid_opaque_t)); | |
d0a381dd | 2743 | return 0; |
e2f282b9 BH |
2744 | } |
2745 | ||
695e12f8 | 2746 | static __be32 |
b37ad28b | 2747 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 2748 | { |
d0a381dd | 2749 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2750 | __be32 *p; |
1da177e4 LT |
2751 | |
2752 | if (!nfserr) { | |
d0a381dd BF |
2753 | p = xdr_reserve_space(xdr, 8); |
2754 | if (!p) | |
2755 | return nfserr_resource; | |
c373b0a4 BF |
2756 | *p++ = cpu_to_be32(access->ac_supported); |
2757 | *p++ = cpu_to_be32(access->ac_resp_access); | |
1da177e4 | 2758 | } |
695e12f8 | 2759 | return nfserr; |
1da177e4 LT |
2760 | } |
2761 | ||
1d1bc8f2 BF |
2762 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
2763 | { | |
d0a381dd | 2764 | struct xdr_stream *xdr = &resp->xdr; |
1d1bc8f2 BF |
2765 | __be32 *p; |
2766 | ||
2767 | if (!nfserr) { | |
d0a381dd BF |
2768 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 8); |
2769 | if (!p) | |
2770 | return nfserr_resource; | |
0c0c267b BF |
2771 | p = xdr_encode_opaque_fixed(p, bcts->sessionid.data, |
2772 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 | 2773 | *p++ = cpu_to_be32(bcts->dir); |
6e67b5d1 | 2774 | /* Sorry, we do not yet support RDMA over 4.1: */ |
c373b0a4 | 2775 | *p++ = cpu_to_be32(0); |
1d1bc8f2 BF |
2776 | } |
2777 | return nfserr; | |
2778 | } | |
2779 | ||
695e12f8 | 2780 | static __be32 |
b37ad28b | 2781 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 | 2782 | { |
d0a381dd BF |
2783 | struct xdr_stream *xdr = &resp->xdr; |
2784 | ||
e2f282b9 | 2785 | if (!nfserr) |
d0a381dd | 2786 | nfserr = nfsd4_encode_stateid(xdr, &close->cl_stateid); |
e2f282b9 | 2787 | |
695e12f8 | 2788 | return nfserr; |
1da177e4 LT |
2789 | } |
2790 | ||
2791 | ||
695e12f8 | 2792 | static __be32 |
b37ad28b | 2793 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 2794 | { |
d0a381dd | 2795 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2796 | __be32 *p; |
1da177e4 LT |
2797 | |
2798 | if (!nfserr) { | |
d0a381dd BF |
2799 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
2800 | if (!p) | |
2801 | return nfserr_resource; | |
0c0c267b BF |
2802 | p = xdr_encode_opaque_fixed(p, commit->co_verf.data, |
2803 | NFS4_VERIFIER_SIZE); | |
1da177e4 | 2804 | } |
695e12f8 | 2805 | return nfserr; |
1da177e4 LT |
2806 | } |
2807 | ||
695e12f8 | 2808 | static __be32 |
b37ad28b | 2809 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 2810 | { |
d0a381dd | 2811 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2812 | __be32 *p; |
1da177e4 LT |
2813 | |
2814 | if (!nfserr) { | |
d0a381dd BF |
2815 | p = xdr_reserve_space(xdr, 32); |
2816 | if (!p) | |
2817 | return nfserr_resource; | |
d05d5744 | 2818 | p = encode_cinfo(p, &create->cr_cinfo); |
c373b0a4 BF |
2819 | *p++ = cpu_to_be32(2); |
2820 | *p++ = cpu_to_be32(create->cr_bmval[0]); | |
2821 | *p++ = cpu_to_be32(create->cr_bmval[1]); | |
1da177e4 | 2822 | } |
695e12f8 | 2823 | return nfserr; |
1da177e4 LT |
2824 | } |
2825 | ||
b37ad28b AV |
2826 | static __be32 |
2827 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
2828 | { |
2829 | struct svc_fh *fhp = getattr->ga_fhp; | |
d5184658 | 2830 | struct xdr_stream *xdr = &resp->xdr; |
1da177e4 LT |
2831 | |
2832 | if (nfserr) | |
2833 | return nfserr; | |
2834 | ||
d5184658 BF |
2835 | nfserr = nfsd4_encode_fattr(xdr, fhp, fhp->fh_export, fhp->fh_dentry, |
2836 | getattr->ga_bmval, | |
406a7ea9 | 2837 | resp->rqstp, 0); |
1da177e4 LT |
2838 | return nfserr; |
2839 | } | |
2840 | ||
695e12f8 BH |
2841 | static __be32 |
2842 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 2843 | { |
d0a381dd | 2844 | struct xdr_stream *xdr = &resp->xdr; |
695e12f8 | 2845 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 2846 | unsigned int len; |
bc749ca4 | 2847 | __be32 *p; |
1da177e4 LT |
2848 | |
2849 | if (!nfserr) { | |
2850 | len = fhp->fh_handle.fh_size; | |
d0a381dd BF |
2851 | p = xdr_reserve_space(xdr, len + 4); |
2852 | if (!p) | |
2853 | return nfserr_resource; | |
0c0c267b | 2854 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, len); |
1da177e4 | 2855 | } |
695e12f8 | 2856 | return nfserr; |
1da177e4 LT |
2857 | } |
2858 | ||
2859 | /* | |
2860 | * Including all fields other than the name, a LOCK4denied structure requires | |
2861 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
2862 | */ | |
d0a381dd BF |
2863 | static __be32 |
2864 | nfsd4_encode_lock_denied(struct xdr_stream *xdr, struct nfsd4_lock_denied *ld) | |
1da177e4 | 2865 | { |
7c13f344 | 2866 | struct xdr_netobj *conf = &ld->ld_owner; |
bc749ca4 | 2867 | __be32 *p; |
1da177e4 | 2868 | |
8c7424cf | 2869 | again: |
d0a381dd | 2870 | p = xdr_reserve_space(xdr, 32 + XDR_LEN(conf->len)); |
8c7424cf BF |
2871 | if (!p) { |
2872 | /* | |
2873 | * Don't fail to return the result just because we can't | |
2874 | * return the conflicting open: | |
2875 | */ | |
2876 | if (conf->len) { | |
2877 | conf->len = 0; | |
2878 | conf->data = NULL; | |
2879 | goto again; | |
2880 | } | |
d0a381dd | 2881 | return nfserr_resource; |
8c7424cf | 2882 | } |
b64c7f3b BF |
2883 | p = xdr_encode_hyper(p, ld->ld_start); |
2884 | p = xdr_encode_hyper(p, ld->ld_length); | |
c373b0a4 | 2885 | *p++ = cpu_to_be32(ld->ld_type); |
7c13f344 | 2886 | if (conf->len) { |
0c0c267b BF |
2887 | p = xdr_encode_opaque_fixed(p, &ld->ld_clientid, 8); |
2888 | p = xdr_encode_opaque(p, conf->data, conf->len); | |
1da177e4 | 2889 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
b64c7f3b | 2890 | p = xdr_encode_hyper(p, (u64)0); /* clientid */ |
c373b0a4 | 2891 | *p++ = cpu_to_be32(0); /* length of owner name */ |
1da177e4 | 2892 | } |
d0a381dd | 2893 | return nfserr_denied; |
1da177e4 LT |
2894 | } |
2895 | ||
695e12f8 | 2896 | static __be32 |
b37ad28b | 2897 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 2898 | { |
d0a381dd BF |
2899 | struct xdr_stream *xdr = &resp->xdr; |
2900 | ||
e2f282b9 | 2901 | if (!nfserr) |
d0a381dd | 2902 | nfserr = nfsd4_encode_stateid(xdr, &lock->lk_resp_stateid); |
e2f282b9 | 2903 | else if (nfserr == nfserr_denied) |
d0a381dd | 2904 | nfserr = nfsd4_encode_lock_denied(xdr, &lock->lk_denied); |
8c7424cf | 2905 | kfree(lock->lk_denied.ld_owner.data); |
695e12f8 | 2906 | return nfserr; |
1da177e4 LT |
2907 | } |
2908 | ||
695e12f8 | 2909 | static __be32 |
b37ad28b | 2910 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 | 2911 | { |
d0a381dd BF |
2912 | struct xdr_stream *xdr = &resp->xdr; |
2913 | ||
1da177e4 | 2914 | if (nfserr == nfserr_denied) |
d0a381dd | 2915 | nfsd4_encode_lock_denied(xdr, &lockt->lt_denied); |
695e12f8 | 2916 | return nfserr; |
1da177e4 LT |
2917 | } |
2918 | ||
695e12f8 | 2919 | static __be32 |
b37ad28b | 2920 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 | 2921 | { |
d0a381dd BF |
2922 | struct xdr_stream *xdr = &resp->xdr; |
2923 | ||
e2f282b9 | 2924 | if (!nfserr) |
d0a381dd | 2925 | nfserr = nfsd4_encode_stateid(xdr, &locku->lu_stateid); |
e2f282b9 | 2926 | |
695e12f8 | 2927 | return nfserr; |
1da177e4 LT |
2928 | } |
2929 | ||
2930 | ||
695e12f8 | 2931 | static __be32 |
b37ad28b | 2932 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 2933 | { |
d0a381dd | 2934 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2935 | __be32 *p; |
1da177e4 LT |
2936 | |
2937 | if (!nfserr) { | |
d0a381dd BF |
2938 | p = xdr_reserve_space(xdr, 20); |
2939 | if (!p) | |
2940 | return nfserr_resource; | |
d05d5744 | 2941 | p = encode_cinfo(p, &link->li_cinfo); |
1da177e4 | 2942 | } |
695e12f8 | 2943 | return nfserr; |
1da177e4 LT |
2944 | } |
2945 | ||
2946 | ||
695e12f8 | 2947 | static __be32 |
b37ad28b | 2948 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 2949 | { |
d0a381dd | 2950 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2951 | __be32 *p; |
1da177e4 LT |
2952 | |
2953 | if (nfserr) | |
2954 | goto out; | |
2955 | ||
d0a381dd BF |
2956 | nfserr = nfsd4_encode_stateid(xdr, &open->op_stateid); |
2957 | if (nfserr) | |
2958 | goto out; | |
2959 | p = xdr_reserve_space(xdr, 40); | |
2960 | if (!p) | |
2961 | return nfserr_resource; | |
d05d5744 | 2962 | p = encode_cinfo(p, &open->op_cinfo); |
c373b0a4 BF |
2963 | *p++ = cpu_to_be32(open->op_rflags); |
2964 | *p++ = cpu_to_be32(2); | |
2965 | *p++ = cpu_to_be32(open->op_bmval[0]); | |
2966 | *p++ = cpu_to_be32(open->op_bmval[1]); | |
2967 | *p++ = cpu_to_be32(open->op_delegate_type); | |
1da177e4 LT |
2968 | |
2969 | switch (open->op_delegate_type) { | |
2970 | case NFS4_OPEN_DELEGATE_NONE: | |
2971 | break; | |
2972 | case NFS4_OPEN_DELEGATE_READ: | |
d0a381dd BF |
2973 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
2974 | if (nfserr) | |
2975 | return nfserr; | |
2976 | p = xdr_reserve_space(xdr, 20); | |
2977 | if (!p) | |
2978 | return nfserr_resource; | |
c373b0a4 | 2979 | *p++ = cpu_to_be32(open->op_recall); |
1da177e4 LT |
2980 | |
2981 | /* | |
2982 | * TODO: ACE's in delegations | |
2983 | */ | |
c373b0a4 BF |
2984 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
2985 | *p++ = cpu_to_be32(0); | |
2986 | *p++ = cpu_to_be32(0); | |
2987 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 LT |
2988 | break; |
2989 | case NFS4_OPEN_DELEGATE_WRITE: | |
d0a381dd BF |
2990 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
2991 | if (nfserr) | |
2992 | return nfserr; | |
2993 | p = xdr_reserve_space(xdr, 32); | |
2994 | if (!p) | |
2995 | return nfserr_resource; | |
c373b0a4 | 2996 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2997 | |
2998 | /* | |
2999 | * TODO: space_limit's in delegations | |
3000 | */ | |
c373b0a4 BF |
3001 | *p++ = cpu_to_be32(NFS4_LIMIT_SIZE); |
3002 | *p++ = cpu_to_be32(~(u32)0); | |
3003 | *p++ = cpu_to_be32(~(u32)0); | |
1da177e4 LT |
3004 | |
3005 | /* | |
3006 | * TODO: ACE's in delegations | |
3007 | */ | |
c373b0a4 BF |
3008 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
3009 | *p++ = cpu_to_be32(0); | |
3010 | *p++ = cpu_to_be32(0); | |
3011 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 | 3012 | break; |
d24433cd BH |
3013 | case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */ |
3014 | switch (open->op_why_no_deleg) { | |
3015 | case WND4_CONTENTION: | |
3016 | case WND4_RESOURCE: | |
d0a381dd BF |
3017 | p = xdr_reserve_space(xdr, 8); |
3018 | if (!p) | |
3019 | return nfserr_resource; | |
c373b0a4 BF |
3020 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
3021 | /* deleg signaling not supported yet: */ | |
3022 | *p++ = cpu_to_be32(0); | |
d24433cd BH |
3023 | break; |
3024 | default: | |
d0a381dd BF |
3025 | p = xdr_reserve_space(xdr, 4); |
3026 | if (!p) | |
3027 | return nfserr_resource; | |
c373b0a4 | 3028 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
d24433cd | 3029 | } |
d24433cd | 3030 | break; |
1da177e4 LT |
3031 | default: |
3032 | BUG(); | |
3033 | } | |
3034 | /* XXX save filehandle here */ | |
3035 | out: | |
695e12f8 | 3036 | return nfserr; |
1da177e4 LT |
3037 | } |
3038 | ||
695e12f8 | 3039 | static __be32 |
b37ad28b | 3040 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 | 3041 | { |
d0a381dd BF |
3042 | struct xdr_stream *xdr = &resp->xdr; |
3043 | ||
e2f282b9 | 3044 | if (!nfserr) |
d0a381dd | 3045 | nfserr = nfsd4_encode_stateid(xdr, &oc->oc_resp_stateid); |
1da177e4 | 3046 | |
695e12f8 | 3047 | return nfserr; |
1da177e4 LT |
3048 | } |
3049 | ||
695e12f8 | 3050 | static __be32 |
b37ad28b | 3051 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 | 3052 | { |
d0a381dd BF |
3053 | struct xdr_stream *xdr = &resp->xdr; |
3054 | ||
e2f282b9 | 3055 | if (!nfserr) |
d0a381dd | 3056 | nfserr = nfsd4_encode_stateid(xdr, &od->od_stateid); |
1da177e4 | 3057 | |
695e12f8 | 3058 | return nfserr; |
1da177e4 LT |
3059 | } |
3060 | ||
dc97618d BF |
3061 | static __be32 nfsd4_encode_splice_read( |
3062 | struct nfsd4_compoundres *resp, | |
3063 | struct nfsd4_read *read, | |
3064 | struct file *file, unsigned long maxcount) | |
1da177e4 | 3065 | { |
ddd1ea56 | 3066 | struct xdr_stream *xdr = &resp->xdr; |
34a78b48 | 3067 | struct xdr_buf *buf = xdr->buf; |
dc97618d | 3068 | u32 eof; |
30596768 | 3069 | int space_left; |
dc97618d | 3070 | __be32 nfserr; |
fec25fa4 | 3071 | __be32 *p = xdr->p - 2; |
1da177e4 | 3072 | |
dc97618d BF |
3073 | /* |
3074 | * Don't inline pages unless we know there's room for eof, | |
3075 | * count, and possible padding: | |
3076 | */ | |
3077 | if (xdr->end - xdr->p < 3) | |
d0a381dd | 3078 | return nfserr_resource; |
dc97618d BF |
3079 | |
3080 | nfserr = nfsd_splice_read(read->rd_rqstp, file, | |
3081 | read->rd_offset, &maxcount); | |
3082 | if (nfserr) { | |
3083 | /* | |
3084 | * nfsd_splice_actor may have already messed with the | |
3085 | * page length; reset it so as not to confuse | |
3086 | * xdr_truncate_encode: | |
3087 | */ | |
34a78b48 | 3088 | buf->page_len = 0; |
dc97618d | 3089 | return nfserr; |
b0e35fda | 3090 | } |
1da177e4 | 3091 | |
dc97618d BF |
3092 | eof = (read->rd_offset + maxcount >= |
3093 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
4e21ac4b | 3094 | |
fec25fa4 BF |
3095 | *(p++) = htonl(eof); |
3096 | *(p++) = htonl(maxcount); | |
dc97618d | 3097 | |
34a78b48 BF |
3098 | buf->page_len = maxcount; |
3099 | buf->len += maxcount; | |
dc97618d | 3100 | xdr->page_ptr += (maxcount + PAGE_SIZE - 1) / PAGE_SIZE; |
dc97618d BF |
3101 | |
3102 | /* Use rest of head for padding and remaining ops: */ | |
34a78b48 BF |
3103 | buf->tail[0].iov_base = xdr->p; |
3104 | buf->tail[0].iov_len = 0; | |
fec25fa4 | 3105 | xdr->iov = buf->tail; |
dc97618d | 3106 | if (maxcount&3) { |
fec25fa4 BF |
3107 | int pad = 4 - (maxcount&3); |
3108 | ||
3109 | *(xdr->p++) = 0; | |
3110 | ||
34a78b48 | 3111 | buf->tail[0].iov_base += maxcount&3; |
fec25fa4 BF |
3112 | buf->tail[0].iov_len = pad; |
3113 | buf->len += pad; | |
b0e35fda | 3114 | } |
2825a7f9 | 3115 | |
dc97618d | 3116 | space_left = min_t(int, (void *)xdr->end - (void *)xdr->p, |
34a78b48 BF |
3117 | buf->buflen - buf->len); |
3118 | buf->buflen = buf->len + space_left; | |
dc97618d BF |
3119 | xdr->end = (__be32 *)((void *)xdr->end + space_left); |
3120 | ||
3121 | return 0; | |
3122 | } | |
3123 | ||
3124 | static __be32 nfsd4_encode_readv(struct nfsd4_compoundres *resp, | |
3125 | struct nfsd4_read *read, | |
3126 | struct file *file, unsigned long maxcount) | |
3127 | { | |
3128 | struct xdr_stream *xdr = &resp->xdr; | |
3129 | u32 eof; | |
3130 | int v; | |
dc97618d | 3131 | int starting_len = xdr->buf->len - 8; |
dc97618d | 3132 | long len; |
b0420980 | 3133 | int thislen; |
dc97618d BF |
3134 | __be32 nfserr; |
3135 | __be32 tmp; | |
3136 | __be32 *p; | |
b0420980 BF |
3137 | u32 zzz = 0; |
3138 | int pad; | |
1da177e4 LT |
3139 | |
3140 | len = maxcount; | |
3141 | v = 0; | |
6ff9897d | 3142 | |
3c7aa15d | 3143 | thislen = min(len, ((void *)xdr->end - (void *)xdr->p)); |
b0420980 BF |
3144 | p = xdr_reserve_space(xdr, (thislen+3)&~3); |
3145 | WARN_ON_ONCE(!p); | |
3146 | resp->rqstp->rq_vec[v].iov_base = p; | |
3147 | resp->rqstp->rq_vec[v].iov_len = thislen; | |
3148 | v++; | |
3149 | len -= thislen; | |
3150 | ||
3151 | while (len) { | |
6ff9897d | 3152 | thislen = min_t(long, len, PAGE_SIZE); |
b0420980 BF |
3153 | p = xdr_reserve_space(xdr, (thislen+3)&~3); |
3154 | WARN_ON_ONCE(!p); | |
3155 | resp->rqstp->rq_vec[v].iov_base = p; | |
6ff9897d | 3156 | resp->rqstp->rq_vec[v].iov_len = thislen; |
1da177e4 | 3157 | v++; |
6ff9897d | 3158 | len -= thislen; |
1da177e4 LT |
3159 | } |
3160 | read->rd_vlen = v; | |
3161 | ||
dc97618d BF |
3162 | nfserr = nfsd_readv(file, read->rd_offset, resp->rqstp->rq_vec, |
3163 | read->rd_vlen, &maxcount); | |
3164 | if (nfserr) | |
1da177e4 | 3165 | return nfserr; |
b0420980 | 3166 | xdr_truncate_encode(xdr, starting_len + 8 + ((maxcount+3)&~3)); |
dc97618d | 3167 | |
44524359 N |
3168 | eof = (read->rd_offset + maxcount >= |
3169 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 | 3170 | |
dc97618d BF |
3171 | tmp = htonl(eof); |
3172 | write_bytes_to_xdr_buf(xdr->buf, starting_len , &tmp, 4); | |
3173 | tmp = htonl(maxcount); | |
3174 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 4, &tmp, 4); | |
3175 | ||
b0420980 BF |
3176 | pad = (maxcount&3) ? 4 - (maxcount&3) : 0; |
3177 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 8 + maxcount, | |
3178 | &zzz, pad); | |
1da177e4 | 3179 | return 0; |
dc97618d BF |
3180 | |
3181 | } | |
3182 | ||
3183 | static __be32 | |
3184 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3185 | struct nfsd4_read *read) | |
3186 | { | |
3187 | unsigned long maxcount; | |
3188 | struct xdr_stream *xdr = &resp->xdr; | |
3189 | struct file *file = read->rd_filp; | |
3190 | int starting_len = xdr->buf->len; | |
3191 | struct raparms *ra; | |
3192 | __be32 *p; | |
3193 | __be32 err; | |
3194 | ||
3195 | if (nfserr) | |
3196 | return nfserr; | |
3197 | ||
3198 | p = xdr_reserve_space(xdr, 8); /* eof flag and byte count */ | |
3199 | if (!p) { | |
3200 | WARN_ON_ONCE(resp->rqstp->rq_splice_ok); | |
3201 | return nfserr_resource; | |
3202 | } | |
b0420980 BF |
3203 | if (resp->xdr.buf->page_len && resp->rqstp->rq_splice_ok) { |
3204 | WARN_ON_ONCE(1); | |
dc97618d BF |
3205 | return nfserr_resource; |
3206 | } | |
dc97618d BF |
3207 | xdr_commit_encode(xdr); |
3208 | ||
3209 | maxcount = svc_max_payload(resp->rqstp); | |
3c7aa15d KM |
3210 | maxcount = min_t(unsigned long, maxcount, (xdr->buf->buflen - xdr->buf->len)); |
3211 | maxcount = min_t(unsigned long, maxcount, read->rd_length); | |
dc97618d BF |
3212 | |
3213 | if (!read->rd_filp) { | |
3214 | err = nfsd_get_tmp_read_open(resp->rqstp, read->rd_fhp, | |
3215 | &file, &ra); | |
3216 | if (err) | |
3217 | goto err_truncate; | |
3218 | } | |
3219 | ||
3220 | if (file->f_op->splice_read && resp->rqstp->rq_splice_ok) | |
3221 | err = nfsd4_encode_splice_read(resp, read, file, maxcount); | |
3222 | else | |
3223 | err = nfsd4_encode_readv(resp, read, file, maxcount); | |
3224 | ||
3225 | if (!read->rd_filp) | |
3226 | nfsd_put_tmp_read_open(file, ra); | |
3227 | ||
3228 | err_truncate: | |
3229 | if (err) | |
3230 | xdr_truncate_encode(xdr, starting_len); | |
3231 | return err; | |
1da177e4 LT |
3232 | } |
3233 | ||
b37ad28b AV |
3234 | static __be32 |
3235 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
3236 | { |
3237 | int maxcount; | |
476a7b1f BF |
3238 | __be32 wire_count; |
3239 | int zero = 0; | |
ddd1ea56 | 3240 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3241 | int length_offset = xdr->buf->len; |
bc749ca4 | 3242 | __be32 *p; |
1da177e4 LT |
3243 | |
3244 | if (nfserr) | |
3245 | return nfserr; | |
2825a7f9 BF |
3246 | |
3247 | p = xdr_reserve_space(xdr, 4); | |
3248 | if (!p) | |
3249 | return nfserr_resource; | |
1da177e4 | 3250 | maxcount = PAGE_SIZE; |
d0a381dd | 3251 | |
476a7b1f BF |
3252 | p = xdr_reserve_space(xdr, maxcount); |
3253 | if (!p) | |
4e21ac4b | 3254 | return nfserr_resource; |
1da177e4 LT |
3255 | /* |
3256 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
3257 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
3258 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
3259 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
3260 | */ | |
476a7b1f BF |
3261 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, |
3262 | (char *)p, &maxcount); | |
1da177e4 | 3263 | if (nfserr == nfserr_isdir) |
d3f627c8 BF |
3264 | nfserr = nfserr_inval; |
3265 | if (nfserr) { | |
1fcea5b2 | 3266 | xdr_truncate_encode(xdr, length_offset); |
1da177e4 | 3267 | return nfserr; |
d3f627c8 | 3268 | } |
1da177e4 | 3269 | |
476a7b1f BF |
3270 | wire_count = htonl(maxcount); |
3271 | write_bytes_to_xdr_buf(xdr->buf, length_offset, &wire_count, 4); | |
3272 | xdr_truncate_encode(xdr, length_offset + 4 + maxcount); | |
3273 | if (maxcount & 3) | |
3274 | write_bytes_to_xdr_buf(xdr->buf, length_offset + 4 + maxcount, | |
3275 | &zero, 4 - (maxcount&3)); | |
1da177e4 LT |
3276 | return 0; |
3277 | } | |
3278 | ||
b37ad28b AV |
3279 | static __be32 |
3280 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
3281 | { |
3282 | int maxcount; | |
561f0ed4 | 3283 | int bytes_left; |
1da177e4 | 3284 | loff_t offset; |
561f0ed4 | 3285 | __be64 wire_offset; |
ddd1ea56 | 3286 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3287 | int starting_len = xdr->buf->len; |
bc749ca4 | 3288 | __be32 *p; |
1da177e4 LT |
3289 | |
3290 | if (nfserr) | |
3291 | return nfserr; | |
1da177e4 | 3292 | |
d0a381dd BF |
3293 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
3294 | if (!p) | |
3295 | return nfserr_resource; | |
1da177e4 LT |
3296 | |
3297 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
c373b0a4 BF |
3298 | *p++ = cpu_to_be32(0); |
3299 | *p++ = cpu_to_be32(0); | |
4aea24b2 BF |
3300 | resp->xdr.buf->head[0].iov_len = ((char *)resp->xdr.p) |
3301 | - (char *)resp->xdr.buf->head[0].iov_base; | |
1da177e4 LT |
3302 | |
3303 | /* | |
561f0ed4 BF |
3304 | * Number of bytes left for directory entries allowing for the |
3305 | * final 8 bytes of the readdir and a following failed op: | |
3306 | */ | |
3307 | bytes_left = xdr->buf->buflen - xdr->buf->len | |
3308 | - COMPOUND_ERR_SLACK_SPACE - 8; | |
3309 | if (bytes_left < 0) { | |
3310 | nfserr = nfserr_resource; | |
3311 | goto err_no_verf; | |
3312 | } | |
3313 | maxcount = min_t(u32, readdir->rd_maxcount, INT_MAX); | |
3314 | /* | |
3315 | * Note the rfc defines rd_maxcount as the size of the | |
3316 | * READDIR4resok structure, which includes the verifier above | |
3317 | * and the 8 bytes encoded at the end of this function: | |
1da177e4 | 3318 | */ |
561f0ed4 BF |
3319 | if (maxcount < 16) { |
3320 | nfserr = nfserr_toosmall; | |
1da177e4 LT |
3321 | goto err_no_verf; |
3322 | } | |
561f0ed4 | 3323 | maxcount = min_t(int, maxcount-16, bytes_left); |
1da177e4 | 3324 | |
561f0ed4 BF |
3325 | readdir->xdr = xdr; |
3326 | readdir->rd_maxcount = maxcount; | |
1da177e4 | 3327 | readdir->common.err = 0; |
561f0ed4 | 3328 | readdir->cookie_offset = 0; |
1da177e4 LT |
3329 | |
3330 | offset = readdir->rd_cookie; | |
3331 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
3332 | &offset, | |
3333 | &readdir->common, nfsd4_encode_dirent); | |
3334 | if (nfserr == nfs_ok && | |
3335 | readdir->common.err == nfserr_toosmall && | |
561f0ed4 BF |
3336 | xdr->buf->len == starting_len + 8) { |
3337 | /* nothing encoded; which limit did we hit?: */ | |
3338 | if (maxcount - 16 < bytes_left) | |
3339 | /* It was the fault of rd_maxcount: */ | |
3340 | nfserr = nfserr_toosmall; | |
3341 | else | |
3342 | /* We ran out of buffer space: */ | |
3343 | nfserr = nfserr_resource; | |
3344 | } | |
1da177e4 LT |
3345 | if (nfserr) |
3346 | goto err_no_verf; | |
3347 | ||
561f0ed4 BF |
3348 | if (readdir->cookie_offset) { |
3349 | wire_offset = cpu_to_be64(offset); | |
3350 | write_bytes_to_xdr_buf(xdr->buf, readdir->cookie_offset, | |
3351 | &wire_offset, 8); | |
3352 | } | |
1da177e4 | 3353 | |
561f0ed4 BF |
3354 | p = xdr_reserve_space(xdr, 8); |
3355 | if (!p) { | |
3356 | WARN_ON_ONCE(1); | |
3357 | goto err_no_verf; | |
3358 | } | |
1da177e4 LT |
3359 | *p++ = 0; /* no more entries */ |
3360 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
1da177e4 LT |
3361 | |
3362 | return 0; | |
3363 | err_no_verf: | |
1fcea5b2 | 3364 | xdr_truncate_encode(xdr, starting_len); |
1da177e4 LT |
3365 | return nfserr; |
3366 | } | |
3367 | ||
695e12f8 | 3368 | static __be32 |
b37ad28b | 3369 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 3370 | { |
d0a381dd | 3371 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3372 | __be32 *p; |
1da177e4 LT |
3373 | |
3374 | if (!nfserr) { | |
d0a381dd BF |
3375 | p = xdr_reserve_space(xdr, 20); |
3376 | if (!p) | |
3377 | return nfserr_resource; | |
d05d5744 | 3378 | p = encode_cinfo(p, &remove->rm_cinfo); |
1da177e4 | 3379 | } |
695e12f8 | 3380 | return nfserr; |
1da177e4 LT |
3381 | } |
3382 | ||
695e12f8 | 3383 | static __be32 |
b37ad28b | 3384 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 3385 | { |
d0a381dd | 3386 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3387 | __be32 *p; |
1da177e4 LT |
3388 | |
3389 | if (!nfserr) { | |
d0a381dd BF |
3390 | p = xdr_reserve_space(xdr, 40); |
3391 | if (!p) | |
3392 | return nfserr_resource; | |
d05d5744 BF |
3393 | p = encode_cinfo(p, &rename->rn_sinfo); |
3394 | p = encode_cinfo(p, &rename->rn_tinfo); | |
1da177e4 | 3395 | } |
695e12f8 | 3396 | return nfserr; |
1da177e4 LT |
3397 | } |
3398 | ||
695e12f8 | 3399 | static __be32 |
d0a381dd | 3400 | nfsd4_do_encode_secinfo(struct xdr_stream *xdr, |
a77c806f | 3401 | __be32 nfserr, struct svc_export *exp) |
dcb488a3 | 3402 | { |
676e4ebd | 3403 | u32 i, nflavs, supported; |
4796f457 BF |
3404 | struct exp_flavor_info *flavs; |
3405 | struct exp_flavor_info def_flavs[2]; | |
676e4ebd CL |
3406 | __be32 *p, *flavorsp; |
3407 | static bool report = true; | |
dcb488a3 AA |
3408 | |
3409 | if (nfserr) | |
3410 | goto out; | |
d0a381dd | 3411 | nfserr = nfserr_resource; |
4796f457 BF |
3412 | if (exp->ex_nflavors) { |
3413 | flavs = exp->ex_flavors; | |
3414 | nflavs = exp->ex_nflavors; | |
3415 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
3416 | flavs = def_flavs; | |
3417 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
3418 | nflavs = 2; | |
3419 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
3420 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
3421 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
3422 | nflavs = 1; | |
3423 | flavs[0].pseudoflavor | |
3424 | = svcauth_gss_flavor(exp->ex_client); | |
3425 | } else { | |
3426 | nflavs = 1; | |
3427 | flavs[0].pseudoflavor | |
3428 | = exp->ex_client->flavour->flavour; | |
3429 | } | |
3430 | } | |
3431 | ||
676e4ebd | 3432 | supported = 0; |
d0a381dd BF |
3433 | p = xdr_reserve_space(xdr, 4); |
3434 | if (!p) | |
3435 | goto out; | |
676e4ebd | 3436 | flavorsp = p++; /* to be backfilled later */ |
676e4ebd | 3437 | |
4796f457 | 3438 | for (i = 0; i < nflavs; i++) { |
676e4ebd | 3439 | rpc_authflavor_t pf = flavs[i].pseudoflavor; |
a77c806f | 3440 | struct rpcsec_gss_info info; |
dcb488a3 | 3441 | |
676e4ebd CL |
3442 | if (rpcauth_get_gssinfo(pf, &info) == 0) { |
3443 | supported++; | |
d0a381dd BF |
3444 | p = xdr_reserve_space(xdr, 4 + 4 + |
3445 | XDR_LEN(info.oid.len) + 4 + 4); | |
3446 | if (!p) | |
3447 | goto out; | |
c373b0a4 | 3448 | *p++ = cpu_to_be32(RPC_AUTH_GSS); |
0c0c267b | 3449 | p = xdr_encode_opaque(p, info.oid.data, info.oid.len); |
c373b0a4 BF |
3450 | *p++ = cpu_to_be32(info.qop); |
3451 | *p++ = cpu_to_be32(info.service); | |
676e4ebd CL |
3452 | } else if (pf < RPC_AUTH_MAXFLAVOR) { |
3453 | supported++; | |
d0a381dd BF |
3454 | p = xdr_reserve_space(xdr, 4); |
3455 | if (!p) | |
3456 | goto out; | |
c373b0a4 | 3457 | *p++ = cpu_to_be32(pf); |
676e4ebd CL |
3458 | } else { |
3459 | if (report) | |
3460 | pr_warn("NFS: SECINFO: security flavor %u " | |
3461 | "is not supported\n", pf); | |
dcb488a3 AA |
3462 | } |
3463 | } | |
a77c806f | 3464 | |
676e4ebd CL |
3465 | if (nflavs != supported) |
3466 | report = false; | |
3467 | *flavorsp = htonl(supported); | |
d0a381dd | 3468 | nfserr = 0; |
dcb488a3 AA |
3469 | out: |
3470 | if (exp) | |
3471 | exp_put(exp); | |
695e12f8 | 3472 | return nfserr; |
dcb488a3 AA |
3473 | } |
3474 | ||
22b6dee8 MJ |
3475 | static __be32 |
3476 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3477 | struct nfsd4_secinfo *secinfo) | |
3478 | { | |
d0a381dd BF |
3479 | struct xdr_stream *xdr = &resp->xdr; |
3480 | ||
3481 | return nfsd4_do_encode_secinfo(xdr, nfserr, secinfo->si_exp); | |
22b6dee8 MJ |
3482 | } |
3483 | ||
3484 | static __be32 | |
3485 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3486 | struct nfsd4_secinfo_no_name *secinfo) | |
3487 | { | |
d0a381dd BF |
3488 | struct xdr_stream *xdr = &resp->xdr; |
3489 | ||
3490 | return nfsd4_do_encode_secinfo(xdr, nfserr, secinfo->sin_exp); | |
22b6dee8 MJ |
3491 | } |
3492 | ||
1da177e4 LT |
3493 | /* |
3494 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
3495 | * regardless of the error status. | |
3496 | */ | |
695e12f8 | 3497 | static __be32 |
b37ad28b | 3498 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 3499 | { |
d0a381dd | 3500 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3501 | __be32 *p; |
1da177e4 | 3502 | |
d0a381dd BF |
3503 | p = xdr_reserve_space(xdr, 16); |
3504 | if (!p) | |
3505 | return nfserr_resource; | |
1da177e4 | 3506 | if (nfserr) { |
c373b0a4 BF |
3507 | *p++ = cpu_to_be32(3); |
3508 | *p++ = cpu_to_be32(0); | |
3509 | *p++ = cpu_to_be32(0); | |
3510 | *p++ = cpu_to_be32(0); | |
1da177e4 LT |
3511 | } |
3512 | else { | |
c373b0a4 BF |
3513 | *p++ = cpu_to_be32(3); |
3514 | *p++ = cpu_to_be32(setattr->sa_bmval[0]); | |
3515 | *p++ = cpu_to_be32(setattr->sa_bmval[1]); | |
3516 | *p++ = cpu_to_be32(setattr->sa_bmval[2]); | |
1da177e4 | 3517 | } |
695e12f8 | 3518 | return nfserr; |
1da177e4 LT |
3519 | } |
3520 | ||
695e12f8 | 3521 | static __be32 |
b37ad28b | 3522 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 3523 | { |
d0a381dd | 3524 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3525 | __be32 *p; |
1da177e4 LT |
3526 | |
3527 | if (!nfserr) { | |
d0a381dd BF |
3528 | p = xdr_reserve_space(xdr, 8 + NFS4_VERIFIER_SIZE); |
3529 | if (!p) | |
3530 | return nfserr_resource; | |
0c0c267b BF |
3531 | p = xdr_encode_opaque_fixed(p, &scd->se_clientid, 8); |
3532 | p = xdr_encode_opaque_fixed(p, &scd->se_confirm, | |
3533 | NFS4_VERIFIER_SIZE); | |
1da177e4 LT |
3534 | } |
3535 | else if (nfserr == nfserr_clid_inuse) { | |
d0a381dd BF |
3536 | p = xdr_reserve_space(xdr, 8); |
3537 | if (!p) | |
3538 | return nfserr_resource; | |
c373b0a4 BF |
3539 | *p++ = cpu_to_be32(0); |
3540 | *p++ = cpu_to_be32(0); | |
1da177e4 | 3541 | } |
695e12f8 | 3542 | return nfserr; |
1da177e4 LT |
3543 | } |
3544 | ||
695e12f8 | 3545 | static __be32 |
b37ad28b | 3546 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 3547 | { |
d0a381dd | 3548 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3549 | __be32 *p; |
1da177e4 LT |
3550 | |
3551 | if (!nfserr) { | |
d0a381dd BF |
3552 | p = xdr_reserve_space(xdr, 16); |
3553 | if (!p) | |
3554 | return nfserr_resource; | |
c373b0a4 BF |
3555 | *p++ = cpu_to_be32(write->wr_bytes_written); |
3556 | *p++ = cpu_to_be32(write->wr_how_written); | |
0c0c267b BF |
3557 | p = xdr_encode_opaque_fixed(p, write->wr_verifier.data, |
3558 | NFS4_VERIFIER_SIZE); | |
1da177e4 | 3559 | } |
695e12f8 | 3560 | return nfserr; |
1da177e4 LT |
3561 | } |
3562 | ||
57266a6e BF |
3563 | static const u32 nfs4_minimal_spo_must_enforce[2] = { |
3564 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
3565 | 1 << (OP_EXCHANGE_ID - 32) | | |
3566 | 1 << (OP_CREATE_SESSION - 32) | | |
3567 | 1 << (OP_DESTROY_SESSION - 32) | | |
3568 | 1 << (OP_DESTROY_CLIENTID - 32) | |
3569 | }; | |
3570 | ||
2db134eb | 3571 | static __be32 |
57b7b43b | 3572 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3573 | struct nfsd4_exchange_id *exid) |
3574 | { | |
d0a381dd | 3575 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3576 | __be32 *p; |
0733d213 AA |
3577 | char *major_id; |
3578 | char *server_scope; | |
3579 | int major_id_sz; | |
3580 | int server_scope_sz; | |
3581 | uint64_t minor_id = 0; | |
3582 | ||
3583 | if (nfserr) | |
3584 | return nfserr; | |
3585 | ||
3586 | major_id = utsname()->nodename; | |
3587 | major_id_sz = strlen(major_id); | |
3588 | server_scope = utsname()->nodename; | |
3589 | server_scope_sz = strlen(server_scope); | |
3590 | ||
d0a381dd | 3591 | p = xdr_reserve_space(xdr, |
0733d213 AA |
3592 | 8 /* eir_clientid */ + |
3593 | 4 /* eir_sequenceid */ + | |
3594 | 4 /* eir_flags */ + | |
a8bb84bc | 3595 | 4 /* spr_how */); |
d0a381dd BF |
3596 | if (!p) |
3597 | return nfserr_resource; | |
0733d213 | 3598 | |
0c0c267b | 3599 | p = xdr_encode_opaque_fixed(p, &exid->clientid, 8); |
c373b0a4 BF |
3600 | *p++ = cpu_to_be32(exid->seqid); |
3601 | *p++ = cpu_to_be32(exid->flags); | |
0733d213 | 3602 | |
c373b0a4 | 3603 | *p++ = cpu_to_be32(exid->spa_how); |
a8bb84bc | 3604 | |
57266a6e BF |
3605 | switch (exid->spa_how) { |
3606 | case SP4_NONE: | |
3607 | break; | |
3608 | case SP4_MACH_CRED: | |
a8bb84bc | 3609 | /* spo_must_enforce, spo_must_allow */ |
d0a381dd BF |
3610 | p = xdr_reserve_space(xdr, 16); |
3611 | if (!p) | |
3612 | return nfserr_resource; | |
a8bb84bc | 3613 | |
57266a6e | 3614 | /* spo_must_enforce bitmap: */ |
c373b0a4 BF |
3615 | *p++ = cpu_to_be32(2); |
3616 | *p++ = cpu_to_be32(nfs4_minimal_spo_must_enforce[0]); | |
3617 | *p++ = cpu_to_be32(nfs4_minimal_spo_must_enforce[1]); | |
57266a6e | 3618 | /* empty spo_must_allow bitmap: */ |
c373b0a4 | 3619 | *p++ = cpu_to_be32(0); |
a8bb84bc | 3620 | |
57266a6e BF |
3621 | break; |
3622 | default: | |
3623 | WARN_ON_ONCE(1); | |
3624 | } | |
0733d213 | 3625 | |
d0a381dd | 3626 | p = xdr_reserve_space(xdr, |
a8bb84bc KM |
3627 | 8 /* so_minor_id */ + |
3628 | 4 /* so_major_id.len */ + | |
3629 | (XDR_QUADLEN(major_id_sz) * 4) + | |
3630 | 4 /* eir_server_scope.len */ + | |
3631 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
3632 | 4 /* eir_server_impl_id.count (0) */); | |
d0a381dd BF |
3633 | if (!p) |
3634 | return nfserr_resource; | |
a8bb84bc | 3635 | |
0733d213 | 3636 | /* The server_owner struct */ |
b64c7f3b | 3637 | p = xdr_encode_hyper(p, minor_id); /* Minor id */ |
0733d213 | 3638 | /* major id */ |
0c0c267b | 3639 | p = xdr_encode_opaque(p, major_id, major_id_sz); |
0733d213 AA |
3640 | |
3641 | /* Server scope */ | |
0c0c267b | 3642 | p = xdr_encode_opaque(p, server_scope, server_scope_sz); |
0733d213 AA |
3643 | |
3644 | /* Implementation id */ | |
c373b0a4 | 3645 | *p++ = cpu_to_be32(0); /* zero length nfs_impl_id4 array */ |
0733d213 | 3646 | return 0; |
2db134eb AA |
3647 | } |
3648 | ||
3649 | static __be32 | |
57b7b43b | 3650 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3651 | struct nfsd4_create_session *sess) |
3652 | { | |
d0a381dd | 3653 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3654 | __be32 *p; |
ec6b5d7b AA |
3655 | |
3656 | if (nfserr) | |
3657 | return nfserr; | |
3658 | ||
d0a381dd BF |
3659 | p = xdr_reserve_space(xdr, 24); |
3660 | if (!p) | |
3661 | return nfserr_resource; | |
0c0c267b BF |
3662 | p = xdr_encode_opaque_fixed(p, sess->sessionid.data, |
3663 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
3664 | *p++ = cpu_to_be32(sess->seqid); |
3665 | *p++ = cpu_to_be32(sess->flags); | |
ec6b5d7b | 3666 | |
d0a381dd BF |
3667 | p = xdr_reserve_space(xdr, 28); |
3668 | if (!p) | |
3669 | return nfserr_resource; | |
c373b0a4 BF |
3670 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
3671 | *p++ = cpu_to_be32(sess->fore_channel.maxreq_sz); | |
3672 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_sz); | |
3673 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_cached); | |
3674 | *p++ = cpu_to_be32(sess->fore_channel.maxops); | |
3675 | *p++ = cpu_to_be32(sess->fore_channel.maxreqs); | |
3676 | *p++ = cpu_to_be32(sess->fore_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
3677 | |
3678 | if (sess->fore_channel.nr_rdma_attrs) { | |
d0a381dd BF |
3679 | p = xdr_reserve_space(xdr, 4); |
3680 | if (!p) | |
3681 | return nfserr_resource; | |
c373b0a4 | 3682 | *p++ = cpu_to_be32(sess->fore_channel.rdma_attrs); |
ec6b5d7b AA |
3683 | } |
3684 | ||
d0a381dd BF |
3685 | p = xdr_reserve_space(xdr, 28); |
3686 | if (!p) | |
3687 | return nfserr_resource; | |
c373b0a4 BF |
3688 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
3689 | *p++ = cpu_to_be32(sess->back_channel.maxreq_sz); | |
3690 | *p++ = cpu_to_be32(sess->back_channel.maxresp_sz); | |
3691 | *p++ = cpu_to_be32(sess->back_channel.maxresp_cached); | |
3692 | *p++ = cpu_to_be32(sess->back_channel.maxops); | |
3693 | *p++ = cpu_to_be32(sess->back_channel.maxreqs); | |
3694 | *p++ = cpu_to_be32(sess->back_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
3695 | |
3696 | if (sess->back_channel.nr_rdma_attrs) { | |
d0a381dd BF |
3697 | p = xdr_reserve_space(xdr, 4); |
3698 | if (!p) | |
3699 | return nfserr_resource; | |
c373b0a4 | 3700 | *p++ = cpu_to_be32(sess->back_channel.rdma_attrs); |
ec6b5d7b AA |
3701 | } |
3702 | return 0; | |
2db134eb AA |
3703 | } |
3704 | ||
c47d832b | 3705 | static __be32 |
57b7b43b | 3706 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3707 | struct nfsd4_sequence *seq) |
3708 | { | |
d0a381dd | 3709 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3710 | __be32 *p; |
b85d4c01 BH |
3711 | |
3712 | if (nfserr) | |
3713 | return nfserr; | |
3714 | ||
d0a381dd BF |
3715 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 20); |
3716 | if (!p) | |
3717 | return nfserr_resource; | |
0c0c267b BF |
3718 | p = xdr_encode_opaque_fixed(p, seq->sessionid.data, |
3719 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
3720 | *p++ = cpu_to_be32(seq->seqid); |
3721 | *p++ = cpu_to_be32(seq->slotid); | |
b7d7ca35 | 3722 | /* Note slotid's are numbered from zero: */ |
c373b0a4 BF |
3723 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_highest_slotid */ |
3724 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_target_highest_slotid */ | |
3725 | *p++ = cpu_to_be32(seq->status_flags); | |
b85d4c01 | 3726 | |
f5236013 | 3727 | resp->cstate.data_offset = xdr->buf->len; /* DRC cache data pointer */ |
b85d4c01 | 3728 | return 0; |
2db134eb AA |
3729 | } |
3730 | ||
2355c596 | 3731 | static __be32 |
57b7b43b | 3732 | nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
17456804 BS |
3733 | struct nfsd4_test_stateid *test_stateid) |
3734 | { | |
d0a381dd | 3735 | struct xdr_stream *xdr = &resp->xdr; |
03cfb420 | 3736 | struct nfsd4_test_stateid_id *stateid, *next; |
17456804 | 3737 | __be32 *p; |
17456804 | 3738 | |
a11fcce1 BF |
3739 | if (nfserr) |
3740 | return nfserr; | |
3741 | ||
d0a381dd BF |
3742 | p = xdr_reserve_space(xdr, 4 + (4 * test_stateid->ts_num_ids)); |
3743 | if (!p) | |
3744 | return nfserr_resource; | |
17456804 | 3745 | *p++ = htonl(test_stateid->ts_num_ids); |
17456804 | 3746 | |
03cfb420 | 3747 | list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) { |
02f5fde5 | 3748 | *p++ = stateid->ts_id_status; |
17456804 | 3749 | } |
17456804 BS |
3750 | |
3751 | return nfserr; | |
3752 | } | |
3753 | ||
695e12f8 BH |
3754 | static __be32 |
3755 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
3756 | { | |
3757 | return nfserr; | |
3758 | } | |
3759 | ||
3760 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
3761 | ||
2db134eb AA |
3762 | /* |
3763 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
3764 | * since we don't need to filter out obsolete ops as this is | |
3765 | * done in the decoding phase. | |
3766 | */ | |
695e12f8 | 3767 | static nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
3768 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
3769 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
3770 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
3771 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
3772 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
3773 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
3774 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
3775 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
3776 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
3777 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
3778 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
3779 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
3780 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
3781 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
3782 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3783 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 3784 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
3785 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
3786 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
3787 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3788 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3789 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3790 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
3791 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
3792 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
3793 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
3794 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
3795 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
3796 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3797 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3798 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
3799 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
3800 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
3801 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
3802 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3803 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
3804 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3805 | |
3806 | /* NFSv4.1 operations */ | |
3807 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
1d1bc8f2 | 3808 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
2db134eb AA |
3809 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
3810 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
43212cc7 KM |
3811 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_noop, |
3812 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3813 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3814 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, | |
3815 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
3816 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
3817 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
3818 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
22b6dee8 | 3819 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
2db134eb AA |
3820 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
3821 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
17456804 | 3822 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, |
2db134eb AA |
3823 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3824 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
3825 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
695e12f8 BH |
3826 | }; |
3827 | ||
496c262c | 3828 | /* |
a8095f7e BF |
3829 | * Calculate whether we still have space to encode repsize bytes. |
3830 | * There are two considerations: | |
3831 | * - For NFS versions >=4.1, the size of the reply must stay within | |
3832 | * session limits | |
3833 | * - For all NFS versions, we must stay within limited preallocated | |
3834 | * buffer space. | |
496c262c | 3835 | * |
a8095f7e BF |
3836 | * This is called before the operation is processed, so can only provide |
3837 | * an upper estimate. For some nonidempotent operations (such as | |
3838 | * getattr), it's not necessarily a problem if that estimate is wrong, | |
3839 | * as we can fail it after processing without significant side effects. | |
496c262c | 3840 | */ |
a8095f7e | 3841 | __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 respsize) |
496c262c | 3842 | { |
67492c99 | 3843 | struct xdr_buf *buf = &resp->rqstp->rq_res; |
47ee5298 | 3844 | struct nfsd4_slot *slot = resp->cstate.slot; |
496c262c | 3845 | |
47ee5298 BF |
3846 | if (buf->len + respsize <= buf->buflen) |
3847 | return nfs_ok; | |
3848 | if (!nfsd4_has_session(&resp->cstate)) | |
ea8d7720 | 3849 | return nfserr_resource; |
47ee5298 BF |
3850 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) { |
3851 | WARN_ON_ONCE(1); | |
3852 | return nfserr_rep_too_big_to_cache; | |
ea8d7720 | 3853 | } |
47ee5298 | 3854 | return nfserr_rep_too_big; |
496c262c AA |
3855 | } |
3856 | ||
1da177e4 LT |
3857 | void |
3858 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3859 | { | |
082d4bd7 | 3860 | struct xdr_stream *xdr = &resp->xdr; |
9411b1d4 | 3861 | struct nfs4_stateowner *so = resp->cstate.replay_owner; |
5f4ab945 | 3862 | struct svc_rqst *rqstp = resp->rqstp; |
082d4bd7 | 3863 | int post_err_offset; |
07d1f802 | 3864 | nfsd4_enc encoder; |
bc749ca4 | 3865 | __be32 *p; |
1da177e4 | 3866 | |
d0a381dd BF |
3867 | p = xdr_reserve_space(xdr, 8); |
3868 | if (!p) { | |
3869 | WARN_ON_ONCE(1); | |
3870 | return; | |
3871 | } | |
c373b0a4 | 3872 | *p++ = cpu_to_be32(op->opnum); |
082d4bd7 | 3873 | post_err_offset = xdr->buf->len; |
1da177e4 | 3874 | |
695e12f8 BH |
3875 | if (op->opnum == OP_ILLEGAL) |
3876 | goto status; | |
3877 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || | |
3878 | !nfsd4_enc_ops[op->opnum]); | |
07d1f802 BF |
3879 | encoder = nfsd4_enc_ops[op->opnum]; |
3880 | op->status = encoder(resp, op->status, &op->u); | |
2825a7f9 BF |
3881 | xdr_commit_encode(xdr); |
3882 | ||
067e1ace | 3883 | /* nfsd4_check_resp_size guarantees enough room for error status */ |
5f4ab945 BF |
3884 | if (!op->status) { |
3885 | int space_needed = 0; | |
3886 | if (!nfsd4_last_compound_op(rqstp)) | |
3887 | space_needed = COMPOUND_ERR_SLACK_SPACE; | |
3888 | op->status = nfsd4_check_resp_size(resp, space_needed); | |
3889 | } | |
c8f13d97 BF |
3890 | if (op->status == nfserr_resource && nfsd4_has_session(&resp->cstate)) { |
3891 | struct nfsd4_slot *slot = resp->cstate.slot; | |
3892 | ||
3893 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) | |
3894 | op->status = nfserr_rep_too_big_to_cache; | |
3895 | else | |
3896 | op->status = nfserr_rep_too_big; | |
3897 | } | |
07d1f802 BF |
3898 | if (op->status == nfserr_resource || |
3899 | op->status == nfserr_rep_too_big || | |
3900 | op->status == nfserr_rep_too_big_to_cache) { | |
3901 | /* | |
3902 | * The operation may have already been encoded or | |
3903 | * partially encoded. No op returns anything additional | |
3904 | * in the case of one of these three errors, so we can | |
3905 | * just truncate back to after the status. But it's a | |
3906 | * bug if we had to do this on a non-idempotent op: | |
3907 | */ | |
3908 | warn_on_nonidempotent_op(op); | |
082d4bd7 | 3909 | xdr_truncate_encode(xdr, post_err_offset); |
07d1f802 | 3910 | } |
9411b1d4 | 3911 | if (so) { |
082d4bd7 BF |
3912 | int len = xdr->buf->len - post_err_offset; |
3913 | ||
9411b1d4 | 3914 | so->so_replay.rp_status = op->status; |
082d4bd7 BF |
3915 | so->so_replay.rp_buflen = len; |
3916 | read_bytes_from_xdr_buf(xdr->buf, post_err_offset, | |
3917 | so->so_replay.rp_buf, len); | |
9411b1d4 | 3918 | } |
695e12f8 | 3919 | status: |
082d4bd7 BF |
3920 | /* Note that op->status is already in network byte order: */ |
3921 | write_bytes_to_xdr_buf(xdr->buf, post_err_offset - 4, &op->status, 4); | |
1da177e4 LT |
3922 | } |
3923 | ||
3924 | /* | |
3925 | * Encode the reply stored in the stateowner reply cache | |
3926 | * | |
3927 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
3928 | * previously sent already encoded operation. | |
3929 | * | |
3930 | * called with nfs4_lock_state() held | |
3931 | */ | |
3932 | void | |
d0a381dd | 3933 | nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op) |
1da177e4 | 3934 | { |
bc749ca4 | 3935 | __be32 *p; |
1da177e4 LT |
3936 | struct nfs4_replay *rp = op->replay; |
3937 | ||
3938 | BUG_ON(!rp); | |
3939 | ||
d0a381dd BF |
3940 | p = xdr_reserve_space(xdr, 8 + rp->rp_buflen); |
3941 | if (!p) { | |
3942 | WARN_ON_ONCE(1); | |
3943 | return; | |
3944 | } | |
c373b0a4 | 3945 | *p++ = cpu_to_be32(op->opnum); |
1da177e4 | 3946 | *p++ = rp->rp_status; /* already xdr'ed */ |
1da177e4 | 3947 | |
0c0c267b | 3948 | p = xdr_encode_opaque_fixed(p, rp->rp_buf, rp->rp_buflen); |
1da177e4 LT |
3949 | } |
3950 | ||
1da177e4 | 3951 | int |
2ebbc012 | 3952 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
3953 | { |
3954 | return xdr_ressize_check(rqstp, p); | |
3955 | } | |
3956 | ||
3e98abff | 3957 | int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp) |
1da177e4 | 3958 | { |
3e98abff BF |
3959 | struct svc_rqst *rqstp = rq; |
3960 | struct nfsd4_compoundargs *args = rqstp->rq_argp; | |
3961 | ||
1da177e4 LT |
3962 | if (args->ops != args->iops) { |
3963 | kfree(args->ops); | |
3964 | args->ops = args->iops; | |
3965 | } | |
f99d49ad JJ |
3966 | kfree(args->tmpp); |
3967 | args->tmpp = NULL; | |
1da177e4 | 3968 | while (args->to_free) { |
d5e23383 | 3969 | struct svcxdr_tmpbuf *tb = args->to_free; |
1da177e4 | 3970 | args->to_free = tb->next; |
1da177e4 LT |
3971 | kfree(tb); |
3972 | } | |
3e98abff | 3973 | return 1; |
1da177e4 LT |
3974 | } |
3975 | ||
3976 | int | |
2ebbc012 | 3977 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 3978 | { |
e874f9f8 JL |
3979 | if (rqstp->rq_arg.head[0].iov_len % 4) { |
3980 | /* client is nuts */ | |
3981 | dprintk("%s: compound not properly padded! (peeraddr=%pISc xid=0x%x)", | |
3982 | __func__, svc_addr(rqstp), be32_to_cpu(rqstp->rq_xid)); | |
3983 | return 0; | |
3984 | } | |
1da177e4 LT |
3985 | args->p = p; |
3986 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
3987 | args->pagelist = rqstp->rq_arg.pages; | |
3988 | args->pagelen = rqstp->rq_arg.page_len; | |
3989 | args->tmpp = NULL; | |
3990 | args->to_free = NULL; | |
3991 | args->ops = args->iops; | |
3992 | args->rqstp = rqstp; | |
3993 | ||
3e98abff | 3994 | return !nfsd4_decode_compound(args); |
1da177e4 LT |
3995 | } |
3996 | ||
3997 | int | |
2ebbc012 | 3998 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
3999 | { |
4000 | /* | |
4001 | * All that remains is to write the tag and operation count... | |
4002 | */ | |
557ce264 | 4003 | struct nfsd4_compound_state *cs = &resp->cstate; |
6ac90391 BF |
4004 | struct xdr_buf *buf = resp->xdr.buf; |
4005 | ||
4006 | WARN_ON_ONCE(buf->len != buf->head[0].iov_len + buf->page_len + | |
4007 | buf->tail[0].iov_len); | |
dd97fdde | 4008 | |
2825a7f9 BF |
4009 | rqstp->rq_next_page = resp->xdr.page_ptr + 1; |
4010 | ||
1da177e4 LT |
4011 | p = resp->tagp; |
4012 | *p++ = htonl(resp->taglen); | |
4013 | memcpy(p, resp->tag, resp->taglen); | |
4014 | p += XDR_QUADLEN(resp->taglen); | |
4015 | *p++ = htonl(resp->opcnt); | |
4016 | ||
26c0c75e | 4017 | if (nfsd4_has_session(cs)) { |
f0f51f5c BF |
4018 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
4019 | struct nfs4_client *clp = cs->session->se_client; | |
26c0c75e BF |
4020 | if (cs->status != nfserr_replay_cache) { |
4021 | nfsd4_store_cache_entry(resp); | |
73e79482 | 4022 | cs->slot->sl_flags &= ~NFSD4_SLOT_INUSE; |
26c0c75e | 4023 | } |
d7682988 | 4024 | /* Renew the clientid on success and on replay */ |
f0f51f5c | 4025 | spin_lock(&nn->client_lock); |
221a6876 | 4026 | nfsd4_put_session(cs->session); |
f0f51f5c BF |
4027 | spin_unlock(&nn->client_lock); |
4028 | put_client_renew(clp); | |
da3846a2 | 4029 | } |
1da177e4 LT |
4030 | return 1; |
4031 | } | |
4032 | ||
4033 | /* | |
4034 | * Local variables: | |
4035 | * c-basic-offset: 8 | |
4036 | * End: | |
4037 | */ |