Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Server-side XDR for NFSv4 |
3 | * | |
4 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Kendrick Smith <kmsmith@umich.edu> | |
8 | * Andy Adamson <andros@umich.edu> | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or without | |
11 | * modification, are permitted provided that the following conditions | |
12 | * are met: | |
13 | * | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions and the following disclaimer. | |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in the | |
18 | * documentation and/or other materials provided with the distribution. | |
19 | * 3. Neither the name of the University nor the names of its | |
20 | * contributors may be used to endorse or promote products derived | |
21 | * from this software without specific prior written permission. | |
22 | * | |
23 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
24 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
25 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
26 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
30 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
31 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
32 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
33 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
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 CH |
183 | /** |
184 | * defer_free - mark an allocation as deferred freed | |
185 | * @argp: NFSv4 compound argument structure to be freed with | |
186 | * @release: release callback to free @p, typically kfree() | |
187 | * @p: pointer to be freed | |
188 | * | |
189 | * Marks @p to be freed when processing the compound operation | |
190 | * described in @argp finishes. | |
191 | */ | |
1da177e4 LT |
192 | static int |
193 | defer_free(struct nfsd4_compoundargs *argp, | |
194 | void (*release)(const void *), void *p) | |
195 | { | |
196 | struct tmpbuf *tb; | |
197 | ||
198 | tb = kmalloc(sizeof(*tb), GFP_KERNEL); | |
199 | if (!tb) | |
200 | return -ENOMEM; | |
201 | tb->buf = p; | |
202 | tb->release = release; | |
203 | tb->next = argp->to_free; | |
204 | argp->to_free = tb; | |
205 | return 0; | |
206 | } | |
207 | ||
2d8498db CH |
208 | /** |
209 | * savemem - duplicate a chunk of memory for later processing | |
210 | * @argp: NFSv4 compound argument structure to be freed with | |
211 | * @p: pointer to be duplicated | |
212 | * @nbytes: length to be duplicated | |
213 | * | |
214 | * Returns a pointer to a copy of @nbytes bytes of memory at @p | |
215 | * that are preserved until processing of the NFSv4 compound | |
216 | * operation described by @argp finishes. | |
217 | */ | |
2ebbc012 | 218 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
1da177e4 | 219 | { |
1da177e4 | 220 | if (p == argp->tmp) { |
67114fe6 | 221 | p = kmemdup(argp->tmp, nbytes, GFP_KERNEL); |
a4db5fe5 BF |
222 | if (!p) |
223 | return NULL; | |
1da177e4 | 224 | } else { |
73dff8be | 225 | BUG_ON(p != argp->tmpp); |
1da177e4 LT |
226 | argp->tmpp = NULL; |
227 | } | |
228 | if (defer_free(argp, kfree, p)) { | |
a4db5fe5 | 229 | kfree(p); |
1da177e4 LT |
230 | return NULL; |
231 | } else | |
232 | return (char *)p; | |
233 | } | |
234 | ||
b37ad28b | 235 | static __be32 |
1da177e4 LT |
236 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
237 | { | |
238 | u32 bmlen; | |
239 | DECODE_HEAD; | |
240 | ||
241 | bmval[0] = 0; | |
242 | bmval[1] = 0; | |
7e705706 | 243 | bmval[2] = 0; |
1da177e4 LT |
244 | |
245 | READ_BUF(4); | |
06553991 | 246 | bmlen = be32_to_cpup(p++); |
1da177e4 LT |
247 | if (bmlen > 1000) |
248 | goto xdr_error; | |
249 | ||
250 | READ_BUF(bmlen << 2); | |
251 | if (bmlen > 0) | |
06553991 | 252 | bmval[0] = be32_to_cpup(p++); |
1da177e4 | 253 | if (bmlen > 1) |
06553991 | 254 | bmval[1] = be32_to_cpup(p++); |
7e705706 | 255 | if (bmlen > 2) |
06553991 | 256 | bmval[2] = be32_to_cpup(p++); |
1da177e4 LT |
257 | |
258 | DECODE_TAIL; | |
259 | } | |
260 | ||
b37ad28b | 261 | static __be32 |
3c8e0316 | 262 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, |
18032ca0 DQ |
263 | struct iattr *iattr, struct nfs4_acl **acl, |
264 | struct xdr_netobj *label) | |
1da177e4 LT |
265 | { |
266 | int expected_len, len = 0; | |
267 | u32 dummy32; | |
542d1ab3 | 268 | u64 sec; |
1da177e4 LT |
269 | char *buf; |
270 | ||
271 | DECODE_HEAD; | |
272 | iattr->ia_valid = 0; | |
273 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
274 | return status; | |
275 | ||
1da177e4 | 276 | READ_BUF(4); |
06553991 | 277 | expected_len = be32_to_cpup(p++); |
1da177e4 LT |
278 | |
279 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
280 | READ_BUF(8); | |
281 | len += 8; | |
542d1ab3 | 282 | p = xdr_decode_hyper(p, &iattr->ia_size); |
1da177e4 LT |
283 | iattr->ia_valid |= ATTR_SIZE; |
284 | } | |
285 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
64a817cf | 286 | u32 nace; |
28e05dd8 | 287 | struct nfs4_ace *ace; |
1da177e4 LT |
288 | |
289 | READ_BUF(4); len += 4; | |
06553991 | 290 | nace = be32_to_cpup(p++); |
1da177e4 | 291 | |
28e05dd8 | 292 | if (nace > NFS4_ACL_MAX) |
798df338 | 293 | return nfserr_fbig; |
28e05dd8 BF |
294 | |
295 | *acl = nfs4_acl_new(nace); | |
eba1c99c KM |
296 | if (*acl == NULL) |
297 | return nfserr_jukebox; | |
298 | ||
28e05dd8 | 299 | defer_free(argp, kfree, *acl); |
1da177e4 | 300 | |
28e05dd8 BF |
301 | (*acl)->naces = nace; |
302 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { | |
1da177e4 | 303 | READ_BUF(16); len += 16; |
06553991 BF |
304 | ace->type = be32_to_cpup(p++); |
305 | ace->flag = be32_to_cpup(p++); | |
306 | ace->access_mask = be32_to_cpup(p++); | |
307 | dummy32 = be32_to_cpup(p++); | |
1da177e4 LT |
308 | READ_BUF(dummy32); |
309 | len += XDR_QUADLEN(dummy32) << 2; | |
310 | READMEM(buf, dummy32); | |
28e05dd8 | 311 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
3c726023 | 312 | status = nfs_ok; |
28e05dd8 | 313 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ab8e4aee | 314 | ; |
28e05dd8 | 315 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
3c726023 | 316 | status = nfsd_map_name_to_gid(argp->rqstp, |
ab8e4aee | 317 | buf, dummy32, &ace->who_gid); |
1da177e4 | 318 | else |
3c726023 | 319 | status = nfsd_map_name_to_uid(argp->rqstp, |
ab8e4aee | 320 | buf, dummy32, &ace->who_uid); |
3c726023 BF |
321 | if (status) |
322 | return status; | |
1da177e4 LT |
323 | } |
324 | } else | |
325 | *acl = NULL; | |
326 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
327 | READ_BUF(4); | |
328 | len += 4; | |
06553991 | 329 | iattr->ia_mode = be32_to_cpup(p++); |
1da177e4 LT |
330 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); |
331 | iattr->ia_valid |= ATTR_MODE; | |
332 | } | |
333 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
334 | READ_BUF(4); | |
335 | len += 4; | |
06553991 | 336 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
337 | READ_BUF(dummy32); |
338 | len += (XDR_QUADLEN(dummy32) << 2); | |
339 | READMEM(buf, dummy32); | |
47c85291 N |
340 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
341 | return status; | |
1da177e4 LT |
342 | iattr->ia_valid |= ATTR_UID; |
343 | } | |
344 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
345 | READ_BUF(4); | |
346 | len += 4; | |
06553991 | 347 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
348 | READ_BUF(dummy32); |
349 | len += (XDR_QUADLEN(dummy32) << 2); | |
350 | READMEM(buf, dummy32); | |
47c85291 N |
351 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
352 | return status; | |
1da177e4 LT |
353 | iattr->ia_valid |= ATTR_GID; |
354 | } | |
355 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
356 | READ_BUF(4); | |
357 | len += 4; | |
06553991 | 358 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
359 | switch (dummy32) { |
360 | case NFS4_SET_TO_CLIENT_TIME: | |
361 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
362 | all 32 bits of 'nseconds'. */ | |
363 | READ_BUF(12); | |
364 | len += 12; | |
542d1ab3 BF |
365 | p = xdr_decode_hyper(p, &sec); |
366 | iattr->ia_atime.tv_sec = (time_t)sec; | |
06553991 | 367 | iattr->ia_atime.tv_nsec = be32_to_cpup(p++); |
1da177e4 LT |
368 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) |
369 | return nfserr_inval; | |
370 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); | |
371 | break; | |
372 | case NFS4_SET_TO_SERVER_TIME: | |
373 | iattr->ia_valid |= ATTR_ATIME; | |
374 | break; | |
375 | default: | |
376 | goto xdr_error; | |
377 | } | |
378 | } | |
1da177e4 LT |
379 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
380 | READ_BUF(4); | |
381 | len += 4; | |
06553991 | 382 | dummy32 = be32_to_cpup(p++); |
1da177e4 LT |
383 | switch (dummy32) { |
384 | case NFS4_SET_TO_CLIENT_TIME: | |
385 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
386 | all 32 bits of 'nseconds'. */ | |
387 | READ_BUF(12); | |
388 | len += 12; | |
542d1ab3 BF |
389 | p = xdr_decode_hyper(p, &sec); |
390 | iattr->ia_mtime.tv_sec = sec; | |
06553991 | 391 | iattr->ia_mtime.tv_nsec = be32_to_cpup(p++); |
1da177e4 LT |
392 | if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) |
393 | return nfserr_inval; | |
394 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); | |
395 | break; | |
396 | case NFS4_SET_TO_SERVER_TIME: | |
397 | iattr->ia_valid |= ATTR_MTIME; | |
398 | break; | |
399 | default: | |
400 | goto xdr_error; | |
401 | } | |
402 | } | |
18032ca0 DQ |
403 | |
404 | label->len = 0; | |
405 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL | |
406 | if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) { | |
407 | READ_BUF(4); | |
408 | len += 4; | |
06553991 | 409 | dummy32 = be32_to_cpup(p++); /* lfs: we don't use it */ |
18032ca0 DQ |
410 | READ_BUF(4); |
411 | len += 4; | |
06553991 | 412 | dummy32 = be32_to_cpup(p++); /* pi: we don't use it either */ |
18032ca0 DQ |
413 | READ_BUF(4); |
414 | len += 4; | |
06553991 | 415 | dummy32 = be32_to_cpup(p++); |
18032ca0 DQ |
416 | READ_BUF(dummy32); |
417 | if (dummy32 > NFSD4_MAX_SEC_LABEL_LEN) | |
418 | return nfserr_badlabel; | |
419 | len += (XDR_QUADLEN(dummy32) << 2); | |
420 | READMEM(buf, dummy32); | |
421 | label->data = kzalloc(dummy32 + 1, GFP_KERNEL); | |
422 | if (!label->data) | |
423 | return nfserr_jukebox; | |
3378b7f4 | 424 | label->len = dummy32; |
18032ca0 DQ |
425 | defer_free(argp, kfree, label->data); |
426 | memcpy(label->data, buf, dummy32); | |
427 | } | |
428 | #endif | |
429 | ||
3c8e0316 YZ |
430 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
431 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 | |
432 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) | |
433 | READ_BUF(expected_len - len); | |
434 | else if (len != expected_len) | |
1da177e4 LT |
435 | goto xdr_error; |
436 | ||
437 | DECODE_TAIL; | |
1da177e4 LT |
438 | } |
439 | ||
e31a1b66 BH |
440 | static __be32 |
441 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
442 | { | |
443 | DECODE_HEAD; | |
444 | ||
445 | READ_BUF(sizeof(stateid_t)); | |
06553991 | 446 | sid->si_generation = be32_to_cpup(p++); |
e31a1b66 BH |
447 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); |
448 | ||
449 | DECODE_TAIL; | |
450 | } | |
451 | ||
b37ad28b | 452 | static __be32 |
1da177e4 LT |
453 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
454 | { | |
455 | DECODE_HEAD; | |
456 | ||
457 | READ_BUF(4); | |
06553991 | 458 | access->ac_req_access = be32_to_cpup(p++); |
1da177e4 LT |
459 | |
460 | DECODE_TAIL; | |
461 | } | |
462 | ||
acb2887e BF |
463 | static __be32 nfsd4_decode_cb_sec(struct nfsd4_compoundargs *argp, struct nfsd4_cb_sec *cbs) |
464 | { | |
465 | DECODE_HEAD; | |
12fc3e92 | 466 | u32 dummy, uid, gid; |
acb2887e BF |
467 | char *machine_name; |
468 | int i; | |
469 | int nr_secflavs; | |
470 | ||
471 | /* callback_sec_params4 */ | |
472 | READ_BUF(4); | |
06553991 | 473 | nr_secflavs = be32_to_cpup(p++); |
57569a70 BF |
474 | if (nr_secflavs) |
475 | cbs->flavor = (u32)(-1); | |
476 | else | |
477 | /* Is this legal? Be generous, take it to mean AUTH_NONE: */ | |
478 | cbs->flavor = 0; | |
acb2887e BF |
479 | for (i = 0; i < nr_secflavs; ++i) { |
480 | READ_BUF(4); | |
06553991 | 481 | dummy = be32_to_cpup(p++); |
acb2887e BF |
482 | switch (dummy) { |
483 | case RPC_AUTH_NULL: | |
484 | /* Nothing to read */ | |
12fc3e92 BF |
485 | if (cbs->flavor == (u32)(-1)) |
486 | cbs->flavor = RPC_AUTH_NULL; | |
acb2887e BF |
487 | break; |
488 | case RPC_AUTH_UNIX: | |
489 | READ_BUF(8); | |
490 | /* stamp */ | |
06553991 | 491 | dummy = be32_to_cpup(p++); |
acb2887e BF |
492 | |
493 | /* machine name */ | |
06553991 | 494 | dummy = be32_to_cpup(p++); |
acb2887e BF |
495 | READ_BUF(dummy); |
496 | SAVEMEM(machine_name, dummy); | |
497 | ||
498 | /* uid, gid */ | |
499 | READ_BUF(8); | |
06553991 BF |
500 | uid = be32_to_cpup(p++); |
501 | gid = be32_to_cpup(p++); | |
acb2887e BF |
502 | |
503 | /* more gids */ | |
504 | READ_BUF(4); | |
06553991 | 505 | dummy = be32_to_cpup(p++); |
acb2887e | 506 | READ_BUF(dummy * 4); |
12fc3e92 | 507 | if (cbs->flavor == (u32)(-1)) { |
03bc6d1c EB |
508 | kuid_t kuid = make_kuid(&init_user_ns, uid); |
509 | kgid_t kgid = make_kgid(&init_user_ns, gid); | |
510 | if (uid_valid(kuid) && gid_valid(kgid)) { | |
511 | cbs->uid = kuid; | |
512 | cbs->gid = kgid; | |
513 | cbs->flavor = RPC_AUTH_UNIX; | |
514 | } else { | |
515 | dprintk("RPC_AUTH_UNIX with invalid" | |
516 | "uid or gid ignoring!\n"); | |
517 | } | |
12fc3e92 | 518 | } |
acb2887e BF |
519 | break; |
520 | case RPC_AUTH_GSS: | |
521 | dprintk("RPC_AUTH_GSS callback secflavor " | |
522 | "not supported!\n"); | |
523 | READ_BUF(8); | |
524 | /* gcbp_service */ | |
06553991 | 525 | dummy = be32_to_cpup(p++); |
acb2887e | 526 | /* gcbp_handle_from_server */ |
06553991 | 527 | dummy = be32_to_cpup(p++); |
acb2887e BF |
528 | READ_BUF(dummy); |
529 | p += XDR_QUADLEN(dummy); | |
530 | /* gcbp_handle_from_client */ | |
531 | READ_BUF(4); | |
06553991 | 532 | dummy = be32_to_cpup(p++); |
acb2887e BF |
533 | READ_BUF(dummy); |
534 | break; | |
535 | default: | |
536 | dprintk("Illegal callback secflavor\n"); | |
537 | return nfserr_inval; | |
538 | } | |
539 | } | |
540 | DECODE_TAIL; | |
541 | } | |
542 | ||
cb73a9f4 BF |
543 | static __be32 nfsd4_decode_backchannel_ctl(struct nfsd4_compoundargs *argp, struct nfsd4_backchannel_ctl *bc) |
544 | { | |
545 | DECODE_HEAD; | |
546 | ||
547 | READ_BUF(4); | |
06553991 | 548 | bc->bc_cb_program = be32_to_cpup(p++); |
cb73a9f4 BF |
549 | nfsd4_decode_cb_sec(argp, &bc->bc_cb_sec); |
550 | ||
551 | DECODE_TAIL; | |
552 | } | |
553 | ||
1d1bc8f2 BF |
554 | static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) |
555 | { | |
556 | DECODE_HEAD; | |
1d1bc8f2 BF |
557 | |
558 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 8); | |
559 | COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
06553991 | 560 | bcts->dir = be32_to_cpup(p++); |
6ce2357f BS |
561 | /* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker |
562 | * could help us figure out we should be using it. */ | |
1d1bc8f2 BF |
563 | DECODE_TAIL; |
564 | } | |
565 | ||
b37ad28b | 566 | static __be32 |
1da177e4 LT |
567 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
568 | { | |
569 | DECODE_HEAD; | |
570 | ||
e31a1b66 | 571 | READ_BUF(4); |
06553991 | 572 | close->cl_seqid = be32_to_cpup(p++); |
e31a1b66 | 573 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
1da177e4 LT |
574 | |
575 | DECODE_TAIL; | |
576 | } | |
577 | ||
578 | ||
b37ad28b | 579 | static __be32 |
1da177e4 LT |
580 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
581 | { | |
582 | DECODE_HEAD; | |
583 | ||
584 | READ_BUF(12); | |
542d1ab3 | 585 | p = xdr_decode_hyper(p, &commit->co_offset); |
06553991 | 586 | commit->co_count = be32_to_cpup(p++); |
1da177e4 LT |
587 | |
588 | DECODE_TAIL; | |
589 | } | |
590 | ||
b37ad28b | 591 | static __be32 |
1da177e4 LT |
592 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
593 | { | |
594 | DECODE_HEAD; | |
595 | ||
596 | READ_BUF(4); | |
06553991 | 597 | create->cr_type = be32_to_cpup(p++); |
1da177e4 LT |
598 | switch (create->cr_type) { |
599 | case NF4LNK: | |
600 | READ_BUF(4); | |
06553991 | 601 | create->cr_linklen = be32_to_cpup(p++); |
1da177e4 | 602 | READ_BUF(create->cr_linklen); |
76f47128 BF |
603 | /* |
604 | * The VFS will want a null-terminated string, and | |
605 | * null-terminating in place isn't safe since this might | |
606 | * end on a page boundary: | |
607 | */ | |
608 | create->cr_linkname = | |
609 | kmalloc(create->cr_linklen + 1, GFP_KERNEL); | |
610 | if (!create->cr_linkname) | |
611 | return nfserr_jukebox; | |
612 | memcpy(create->cr_linkname, p, create->cr_linklen); | |
613 | create->cr_linkname[create->cr_linklen] = '\0'; | |
614 | defer_free(argp, kfree, create->cr_linkname); | |
1da177e4 LT |
615 | break; |
616 | case NF4BLK: | |
617 | case NF4CHR: | |
618 | READ_BUF(8); | |
06553991 BF |
619 | create->cr_specdata1 = be32_to_cpup(p++); |
620 | create->cr_specdata2 = be32_to_cpup(p++); | |
1da177e4 LT |
621 | break; |
622 | case NF4SOCK: | |
623 | case NF4FIFO: | |
624 | case NF4DIR: | |
625 | default: | |
626 | break; | |
627 | } | |
628 | ||
629 | READ_BUF(4); | |
06553991 | 630 | create->cr_namelen = be32_to_cpup(p++); |
1da177e4 LT |
631 | READ_BUF(create->cr_namelen); |
632 | SAVEMEM(create->cr_name, create->cr_namelen); | |
a36b1725 | 633 | if ((status = check_filename(create->cr_name, create->cr_namelen))) |
1da177e4 LT |
634 | return status; |
635 | ||
3c8e0316 | 636 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
18032ca0 | 637 | &create->cr_acl, &create->cr_label); |
c0d6fc8a | 638 | if (status) |
1da177e4 LT |
639 | goto out; |
640 | ||
641 | DECODE_TAIL; | |
642 | } | |
643 | ||
b37ad28b | 644 | static inline __be32 |
1da177e4 LT |
645 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
646 | { | |
e31a1b66 | 647 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
1da177e4 LT |
648 | } |
649 | ||
b37ad28b | 650 | static inline __be32 |
1da177e4 LT |
651 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
652 | { | |
653 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
654 | } | |
655 | ||
b37ad28b | 656 | static __be32 |
1da177e4 LT |
657 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
658 | { | |
659 | DECODE_HEAD; | |
660 | ||
661 | READ_BUF(4); | |
06553991 | 662 | link->li_namelen = be32_to_cpup(p++); |
1da177e4 LT |
663 | READ_BUF(link->li_namelen); |
664 | SAVEMEM(link->li_name, link->li_namelen); | |
a36b1725 | 665 | if ((status = check_filename(link->li_name, link->li_namelen))) |
1da177e4 LT |
666 | return status; |
667 | ||
668 | DECODE_TAIL; | |
669 | } | |
670 | ||
b37ad28b | 671 | static __be32 |
1da177e4 LT |
672 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
673 | { | |
674 | DECODE_HEAD; | |
675 | ||
1da177e4 LT |
676 | /* |
677 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
678 | */ | |
679 | READ_BUF(28); | |
06553991 | 680 | lock->lk_type = be32_to_cpup(p++); |
1da177e4 LT |
681 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) |
682 | goto xdr_error; | |
06553991 | 683 | lock->lk_reclaim = be32_to_cpup(p++); |
542d1ab3 BF |
684 | p = xdr_decode_hyper(p, &lock->lk_offset); |
685 | p = xdr_decode_hyper(p, &lock->lk_length); | |
06553991 | 686 | lock->lk_is_new = be32_to_cpup(p++); |
1da177e4 LT |
687 | |
688 | if (lock->lk_is_new) { | |
e31a1b66 | 689 | READ_BUF(4); |
06553991 | 690 | lock->lk_new_open_seqid = be32_to_cpup(p++); |
e31a1b66 BH |
691 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
692 | if (status) | |
693 | return status; | |
694 | READ_BUF(8 + sizeof(clientid_t)); | |
06553991 | 695 | lock->lk_new_lock_seqid = be32_to_cpup(p++); |
1da177e4 | 696 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); |
06553991 | 697 | lock->lk_new_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
698 | READ_BUF(lock->lk_new_owner.len); |
699 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
700 | } else { | |
e31a1b66 BH |
701 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
702 | if (status) | |
703 | return status; | |
704 | READ_BUF(4); | |
06553991 | 705 | lock->lk_old_lock_seqid = be32_to_cpup(p++); |
1da177e4 LT |
706 | } |
707 | ||
708 | DECODE_TAIL; | |
709 | } | |
710 | ||
b37ad28b | 711 | static __be32 |
1da177e4 LT |
712 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
713 | { | |
714 | DECODE_HEAD; | |
715 | ||
716 | READ_BUF(32); | |
06553991 | 717 | lockt->lt_type = be32_to_cpup(p++); |
1da177e4 LT |
718 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) |
719 | goto xdr_error; | |
542d1ab3 BF |
720 | p = xdr_decode_hyper(p, &lockt->lt_offset); |
721 | p = xdr_decode_hyper(p, &lockt->lt_length); | |
1da177e4 | 722 | COPYMEM(&lockt->lt_clientid, 8); |
06553991 | 723 | lockt->lt_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
724 | READ_BUF(lockt->lt_owner.len); |
725 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
726 | ||
727 | DECODE_TAIL; | |
728 | } | |
729 | ||
b37ad28b | 730 | static __be32 |
1da177e4 LT |
731 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
732 | { | |
733 | DECODE_HEAD; | |
734 | ||
e31a1b66 | 735 | READ_BUF(8); |
06553991 | 736 | locku->lu_type = be32_to_cpup(p++); |
1da177e4 LT |
737 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) |
738 | goto xdr_error; | |
06553991 | 739 | locku->lu_seqid = be32_to_cpup(p++); |
e31a1b66 BH |
740 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
741 | if (status) | |
742 | return status; | |
743 | READ_BUF(16); | |
542d1ab3 BF |
744 | p = xdr_decode_hyper(p, &locku->lu_offset); |
745 | p = xdr_decode_hyper(p, &locku->lu_length); | |
1da177e4 LT |
746 | |
747 | DECODE_TAIL; | |
748 | } | |
749 | ||
b37ad28b | 750 | static __be32 |
1da177e4 LT |
751 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
752 | { | |
753 | DECODE_HEAD; | |
754 | ||
755 | READ_BUF(4); | |
06553991 | 756 | lookup->lo_len = be32_to_cpup(p++); |
1da177e4 LT |
757 | READ_BUF(lookup->lo_len); |
758 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
a36b1725 | 759 | if ((status = check_filename(lookup->lo_name, lookup->lo_len))) |
1da177e4 LT |
760 | return status; |
761 | ||
762 | DECODE_TAIL; | |
763 | } | |
764 | ||
2c8bd7e0 | 765 | static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when) |
04f9e664 BF |
766 | { |
767 | __be32 *p; | |
768 | u32 w; | |
769 | ||
770 | READ_BUF(4); | |
06553991 | 771 | w = be32_to_cpup(p++); |
2c8bd7e0 BH |
772 | *share_access = w & NFS4_SHARE_ACCESS_MASK; |
773 | *deleg_want = w & NFS4_SHARE_WANT_MASK; | |
774 | if (deleg_when) | |
775 | *deleg_when = w & NFS4_SHARE_WHEN_MASK; | |
776 | ||
04f9e664 BF |
777 | switch (w & NFS4_SHARE_ACCESS_MASK) { |
778 | case NFS4_SHARE_ACCESS_READ: | |
779 | case NFS4_SHARE_ACCESS_WRITE: | |
780 | case NFS4_SHARE_ACCESS_BOTH: | |
781 | break; | |
782 | default: | |
783 | return nfserr_bad_xdr; | |
784 | } | |
fc0d14fe | 785 | w &= ~NFS4_SHARE_ACCESS_MASK; |
04f9e664 BF |
786 | if (!w) |
787 | return nfs_ok; | |
788 | if (!argp->minorversion) | |
789 | return nfserr_bad_xdr; | |
790 | switch (w & NFS4_SHARE_WANT_MASK) { | |
791 | case NFS4_SHARE_WANT_NO_PREFERENCE: | |
792 | case NFS4_SHARE_WANT_READ_DELEG: | |
793 | case NFS4_SHARE_WANT_WRITE_DELEG: | |
794 | case NFS4_SHARE_WANT_ANY_DELEG: | |
795 | case NFS4_SHARE_WANT_NO_DELEG: | |
796 | case NFS4_SHARE_WANT_CANCEL: | |
797 | break; | |
798 | default: | |
799 | return nfserr_bad_xdr; | |
800 | } | |
92bac8c5 | 801 | w &= ~NFS4_SHARE_WANT_MASK; |
04f9e664 BF |
802 | if (!w) |
803 | return nfs_ok; | |
2c8bd7e0 BH |
804 | |
805 | if (!deleg_when) /* open_downgrade */ | |
806 | return nfserr_inval; | |
04f9e664 BF |
807 | switch (w) { |
808 | case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL: | |
809 | case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED: | |
c668fc6d BH |
810 | case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL | |
811 | NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED): | |
04f9e664 BF |
812 | return nfs_ok; |
813 | } | |
814 | xdr_error: | |
815 | return nfserr_bad_xdr; | |
816 | } | |
817 | ||
818 | static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x) | |
819 | { | |
820 | __be32 *p; | |
821 | ||
822 | READ_BUF(4); | |
06553991 | 823 | *x = be32_to_cpup(p++); |
04f9e664 | 824 | /* Note: unlinke access bits, deny bits may be zero. */ |
01cd4afa | 825 | if (*x & ~NFS4_SHARE_DENY_BOTH) |
04f9e664 BF |
826 | return nfserr_bad_xdr; |
827 | return nfs_ok; | |
828 | xdr_error: | |
829 | return nfserr_bad_xdr; | |
830 | } | |
831 | ||
a084daf5 BF |
832 | static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o) |
833 | { | |
834 | __be32 *p; | |
835 | ||
836 | READ_BUF(4); | |
06553991 | 837 | o->len = be32_to_cpup(p++); |
a084daf5 BF |
838 | |
839 | if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT) | |
840 | return nfserr_bad_xdr; | |
841 | ||
842 | READ_BUF(o->len); | |
843 | SAVEMEM(o->data, o->len); | |
844 | return nfs_ok; | |
845 | xdr_error: | |
846 | return nfserr_bad_xdr; | |
847 | } | |
848 | ||
b37ad28b | 849 | static __be32 |
1da177e4 LT |
850 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
851 | { | |
852 | DECODE_HEAD; | |
2c8bd7e0 | 853 | u32 dummy; |
1da177e4 LT |
854 | |
855 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
856 | open->op_iattr.ia_valid = 0; | |
fe0750e5 | 857 | open->op_openowner = NULL; |
1da177e4 | 858 | |
9d313b17 | 859 | open->op_xdr_error = 0; |
1da177e4 | 860 | /* seqid, share_access, share_deny, clientid, ownerlen */ |
04f9e664 | 861 | READ_BUF(4); |
06553991 | 862 | open->op_seqid = be32_to_cpup(p++); |
2c8bd7e0 BH |
863 | /* decode, yet ignore deleg_when until supported */ |
864 | status = nfsd4_decode_share_access(argp, &open->op_share_access, | |
865 | &open->op_deleg_want, &dummy); | |
04f9e664 BF |
866 | if (status) |
867 | goto xdr_error; | |
868 | status = nfsd4_decode_share_deny(argp, &open->op_share_deny); | |
869 | if (status) | |
870 | goto xdr_error; | |
a084daf5 | 871 | READ_BUF(sizeof(clientid_t)); |
1da177e4 | 872 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); |
a084daf5 BF |
873 | status = nfsd4_decode_opaque(argp, &open->op_owner); |
874 | if (status) | |
875 | goto xdr_error; | |
876 | READ_BUF(4); | |
06553991 | 877 | open->op_create = be32_to_cpup(p++); |
1da177e4 LT |
878 | switch (open->op_create) { |
879 | case NFS4_OPEN_NOCREATE: | |
880 | break; | |
881 | case NFS4_OPEN_CREATE: | |
882 | READ_BUF(4); | |
06553991 | 883 | open->op_createmode = be32_to_cpup(p++); |
1da177e4 LT |
884 | switch (open->op_createmode) { |
885 | case NFS4_CREATE_UNCHECKED: | |
886 | case NFS4_CREATE_GUARDED: | |
c0d6fc8a | 887 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
18032ca0 | 888 | &open->op_iattr, &open->op_acl, &open->op_label); |
c0d6fc8a | 889 | if (status) |
1da177e4 LT |
890 | goto out; |
891 | break; | |
892 | case NFS4_CREATE_EXCLUSIVE: | |
ab4684d1 CL |
893 | READ_BUF(NFS4_VERIFIER_SIZE); |
894 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 895 | break; |
79fb54ab BH |
896 | case NFS4_CREATE_EXCLUSIVE4_1: |
897 | if (argp->minorversion < 1) | |
898 | goto xdr_error; | |
ab4684d1 CL |
899 | READ_BUF(NFS4_VERIFIER_SIZE); |
900 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
79fb54ab | 901 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
18032ca0 | 902 | &open->op_iattr, &open->op_acl, &open->op_label); |
79fb54ab BH |
903 | if (status) |
904 | goto out; | |
905 | break; | |
1da177e4 LT |
906 | default: |
907 | goto xdr_error; | |
908 | } | |
909 | break; | |
910 | default: | |
911 | goto xdr_error; | |
912 | } | |
913 | ||
914 | /* open_claim */ | |
915 | READ_BUF(4); | |
06553991 | 916 | open->op_claim_type = be32_to_cpup(p++); |
1da177e4 LT |
917 | switch (open->op_claim_type) { |
918 | case NFS4_OPEN_CLAIM_NULL: | |
919 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
920 | READ_BUF(4); | |
06553991 | 921 | open->op_fname.len = be32_to_cpup(p++); |
1da177e4 LT |
922 | READ_BUF(open->op_fname.len); |
923 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 924 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
925 | return status; |
926 | break; | |
927 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
928 | READ_BUF(4); | |
06553991 | 929 | open->op_delegate_type = be32_to_cpup(p++); |
1da177e4 LT |
930 | break; |
931 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
e31a1b66 BH |
932 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
933 | if (status) | |
934 | return status; | |
935 | READ_BUF(4); | |
06553991 | 936 | open->op_fname.len = be32_to_cpup(p++); |
1da177e4 LT |
937 | READ_BUF(open->op_fname.len); |
938 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 939 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
940 | return status; |
941 | break; | |
8b289b2c BF |
942 | case NFS4_OPEN_CLAIM_FH: |
943 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
944 | if (argp->minorversion < 1) | |
945 | goto xdr_error; | |
946 | /* void */ | |
947 | break; | |
948 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
949 | if (argp->minorversion < 1) | |
950 | goto xdr_error; | |
951 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); | |
952 | if (status) | |
953 | return status; | |
954 | break; | |
1da177e4 LT |
955 | default: |
956 | goto xdr_error; | |
957 | } | |
958 | ||
959 | DECODE_TAIL; | |
960 | } | |
961 | ||
b37ad28b | 962 | static __be32 |
1da177e4 LT |
963 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
964 | { | |
965 | DECODE_HEAD; | |
e1a90ebd AS |
966 | |
967 | if (argp->minorversion >= 1) | |
968 | return nfserr_notsupp; | |
969 | ||
e31a1b66 BH |
970 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
971 | if (status) | |
972 | return status; | |
973 | READ_BUF(4); | |
06553991 | 974 | open_conf->oc_seqid = be32_to_cpup(p++); |
e1a90ebd | 975 | |
1da177e4 LT |
976 | DECODE_TAIL; |
977 | } | |
978 | ||
b37ad28b | 979 | static __be32 |
1da177e4 LT |
980 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
981 | { | |
982 | DECODE_HEAD; | |
983 | ||
e31a1b66 BH |
984 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
985 | if (status) | |
986 | return status; | |
04f9e664 | 987 | READ_BUF(4); |
06553991 | 988 | open_down->od_seqid = be32_to_cpup(p++); |
2c8bd7e0 BH |
989 | status = nfsd4_decode_share_access(argp, &open_down->od_share_access, |
990 | &open_down->od_deleg_want, NULL); | |
04f9e664 BF |
991 | if (status) |
992 | return status; | |
993 | status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny); | |
994 | if (status) | |
995 | return status; | |
1da177e4 LT |
996 | DECODE_TAIL; |
997 | } | |
998 | ||
b37ad28b | 999 | static __be32 |
1da177e4 LT |
1000 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
1001 | { | |
1002 | DECODE_HEAD; | |
1003 | ||
1004 | READ_BUF(4); | |
06553991 | 1005 | putfh->pf_fhlen = be32_to_cpup(p++); |
1da177e4 LT |
1006 | if (putfh->pf_fhlen > NFS4_FHSIZE) |
1007 | goto xdr_error; | |
1008 | READ_BUF(putfh->pf_fhlen); | |
1009 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
1010 | ||
1011 | DECODE_TAIL; | |
1012 | } | |
1013 | ||
e1a90ebd AS |
1014 | static __be32 |
1015 | nfsd4_decode_putpubfh(struct nfsd4_compoundargs *argp, void *p) | |
1016 | { | |
1017 | if (argp->minorversion == 0) | |
1018 | return nfs_ok; | |
1019 | return nfserr_notsupp; | |
1020 | } | |
1021 | ||
b37ad28b | 1022 | static __be32 |
1da177e4 LT |
1023 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
1024 | { | |
1025 | DECODE_HEAD; | |
1026 | ||
e31a1b66 BH |
1027 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
1028 | if (status) | |
1029 | return status; | |
1030 | READ_BUF(12); | |
542d1ab3 | 1031 | p = xdr_decode_hyper(p, &read->rd_offset); |
06553991 | 1032 | read->rd_length = be32_to_cpup(p++); |
1da177e4 LT |
1033 | |
1034 | DECODE_TAIL; | |
1035 | } | |
1036 | ||
b37ad28b | 1037 | static __be32 |
1da177e4 LT |
1038 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
1039 | { | |
1040 | DECODE_HEAD; | |
1041 | ||
1042 | READ_BUF(24); | |
542d1ab3 | 1043 | p = xdr_decode_hyper(p, &readdir->rd_cookie); |
1da177e4 | 1044 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); |
06553991 BF |
1045 | readdir->rd_dircount = be32_to_cpup(p++); |
1046 | readdir->rd_maxcount = be32_to_cpup(p++); | |
1da177e4 LT |
1047 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) |
1048 | goto out; | |
1049 | ||
1050 | DECODE_TAIL; | |
1051 | } | |
1052 | ||
b37ad28b | 1053 | static __be32 |
1da177e4 LT |
1054 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
1055 | { | |
1056 | DECODE_HEAD; | |
1057 | ||
1058 | READ_BUF(4); | |
06553991 | 1059 | remove->rm_namelen = be32_to_cpup(p++); |
1da177e4 LT |
1060 | READ_BUF(remove->rm_namelen); |
1061 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
a36b1725 | 1062 | if ((status = check_filename(remove->rm_name, remove->rm_namelen))) |
1da177e4 LT |
1063 | return status; |
1064 | ||
1065 | DECODE_TAIL; | |
1066 | } | |
1067 | ||
b37ad28b | 1068 | static __be32 |
1da177e4 LT |
1069 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
1070 | { | |
1071 | DECODE_HEAD; | |
1072 | ||
1073 | READ_BUF(4); | |
06553991 | 1074 | rename->rn_snamelen = be32_to_cpup(p++); |
1da177e4 LT |
1075 | READ_BUF(rename->rn_snamelen + 4); |
1076 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); | |
06553991 | 1077 | rename->rn_tnamelen = be32_to_cpup(p++); |
1da177e4 LT |
1078 | READ_BUF(rename->rn_tnamelen); |
1079 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
a36b1725 | 1080 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen))) |
1da177e4 | 1081 | return status; |
a36b1725 | 1082 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen))) |
1da177e4 LT |
1083 | return status; |
1084 | ||
1085 | DECODE_TAIL; | |
1086 | } | |
1087 | ||
b37ad28b | 1088 | static __be32 |
1da177e4 LT |
1089 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
1090 | { | |
1091 | DECODE_HEAD; | |
1092 | ||
e1a90ebd AS |
1093 | if (argp->minorversion >= 1) |
1094 | return nfserr_notsupp; | |
1095 | ||
1da177e4 LT |
1096 | READ_BUF(sizeof(clientid_t)); |
1097 | COPYMEM(clientid, sizeof(clientid_t)); | |
1098 | ||
1099 | DECODE_TAIL; | |
1100 | } | |
1101 | ||
dcb488a3 AA |
1102 | static __be32 |
1103 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
1104 | struct nfsd4_secinfo *secinfo) | |
1105 | { | |
1106 | DECODE_HEAD; | |
1107 | ||
1108 | READ_BUF(4); | |
06553991 | 1109 | secinfo->si_namelen = be32_to_cpup(p++); |
dcb488a3 AA |
1110 | READ_BUF(secinfo->si_namelen); |
1111 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
a36b1725 | 1112 | status = check_filename(secinfo->si_name, secinfo->si_namelen); |
dcb488a3 AA |
1113 | if (status) |
1114 | return status; | |
1115 | DECODE_TAIL; | |
1116 | } | |
1117 | ||
04f4ad16 BF |
1118 | static __be32 |
1119 | nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, | |
1120 | struct nfsd4_secinfo_no_name *sin) | |
1121 | { | |
1122 | DECODE_HEAD; | |
1123 | ||
1124 | READ_BUF(4); | |
06553991 | 1125 | sin->sin_style = be32_to_cpup(p++); |
04f4ad16 BF |
1126 | DECODE_TAIL; |
1127 | } | |
1128 | ||
b37ad28b | 1129 | static __be32 |
1da177e4 LT |
1130 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
1131 | { | |
e31a1b66 | 1132 | __be32 status; |
1da177e4 | 1133 | |
e31a1b66 BH |
1134 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
1135 | if (status) | |
1136 | return status; | |
3c8e0316 | 1137 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
18032ca0 | 1138 | &setattr->sa_acl, &setattr->sa_label); |
1da177e4 LT |
1139 | } |
1140 | ||
b37ad28b | 1141 | static __be32 |
1da177e4 LT |
1142 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
1143 | { | |
1144 | DECODE_HEAD; | |
1145 | ||
e1a90ebd AS |
1146 | if (argp->minorversion >= 1) |
1147 | return nfserr_notsupp; | |
1148 | ||
ab4684d1 CL |
1149 | READ_BUF(NFS4_VERIFIER_SIZE); |
1150 | COPYMEM(setclientid->se_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 1151 | |
a084daf5 BF |
1152 | status = nfsd4_decode_opaque(argp, &setclientid->se_name); |
1153 | if (status) | |
1154 | return nfserr_bad_xdr; | |
1155 | READ_BUF(8); | |
06553991 BF |
1156 | setclientid->se_callback_prog = be32_to_cpup(p++); |
1157 | setclientid->se_callback_netid_len = be32_to_cpup(p++); | |
1da177e4 LT |
1158 | |
1159 | READ_BUF(setclientid->se_callback_netid_len + 4); | |
1160 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); | |
06553991 | 1161 | setclientid->se_callback_addr_len = be32_to_cpup(p++); |
1da177e4 LT |
1162 | |
1163 | READ_BUF(setclientid->se_callback_addr_len + 4); | |
1164 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); | |
06553991 | 1165 | setclientid->se_callback_ident = be32_to_cpup(p++); |
1da177e4 LT |
1166 | |
1167 | DECODE_TAIL; | |
1168 | } | |
1169 | ||
b37ad28b | 1170 | static __be32 |
1da177e4 LT |
1171 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
1172 | { | |
1173 | DECODE_HEAD; | |
1174 | ||
e1a90ebd AS |
1175 | if (argp->minorversion >= 1) |
1176 | return nfserr_notsupp; | |
1177 | ||
ab4684d1 | 1178 | READ_BUF(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 1179 | COPYMEM(&scd_c->sc_clientid, 8); |
ab4684d1 | 1180 | COPYMEM(&scd_c->sc_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
1181 | |
1182 | DECODE_TAIL; | |
1183 | } | |
1184 | ||
1185 | /* Also used for NVERIFY */ | |
b37ad28b | 1186 | static __be32 |
1da177e4 LT |
1187 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
1188 | { | |
1da177e4 LT |
1189 | DECODE_HEAD; |
1190 | ||
1191 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
1192 | goto out; | |
1193 | ||
1194 | /* For convenience's sake, we compare raw xdr'd attributes in | |
e5f95703 BF |
1195 | * nfsd4_proc_verify */ |
1196 | ||
1da177e4 | 1197 | READ_BUF(4); |
06553991 | 1198 | verify->ve_attrlen = be32_to_cpup(p++); |
1da177e4 LT |
1199 | READ_BUF(verify->ve_attrlen); |
1200 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
1201 | ||
1202 | DECODE_TAIL; | |
1203 | } | |
1204 | ||
b37ad28b | 1205 | static __be32 |
1da177e4 LT |
1206 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
1207 | { | |
1208 | int avail; | |
1da177e4 LT |
1209 | int len; |
1210 | DECODE_HEAD; | |
1211 | ||
e31a1b66 BH |
1212 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
1213 | if (status) | |
1214 | return status; | |
1215 | READ_BUF(16); | |
542d1ab3 | 1216 | p = xdr_decode_hyper(p, &write->wr_offset); |
06553991 | 1217 | write->wr_stable_how = be32_to_cpup(p++); |
1da177e4 LT |
1218 | if (write->wr_stable_how > 2) |
1219 | goto xdr_error; | |
06553991 | 1220 | write->wr_buflen = be32_to_cpup(p++); |
1da177e4 LT |
1221 | |
1222 | /* Sorry .. no magic macros for this.. * | |
1223 | * READ_BUF(write->wr_buflen); | |
1224 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
1225 | */ | |
1226 | avail = (char*)argp->end - (char*)argp->p; | |
1227 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
1228 | dprintk("NFSD: xdr error (%s:%d)\n", |
1229 | __FILE__, __LINE__); | |
1da177e4 LT |
1230 | goto xdr_error; |
1231 | } | |
70cc7f75 BF |
1232 | write->wr_head.iov_base = p; |
1233 | write->wr_head.iov_len = avail; | |
70cc7f75 | 1234 | write->wr_pagelist = argp->pagelist; |
5a80a54d BF |
1235 | |
1236 | len = XDR_QUADLEN(write->wr_buflen) << 2; | |
1237 | if (len >= avail) { | |
1238 | int pages; | |
1239 | ||
1240 | len -= avail; | |
1241 | ||
1242 | pages = len >> PAGE_SHIFT; | |
1243 | argp->pagelist += pages; | |
1244 | argp->pagelen -= pages * PAGE_SIZE; | |
1245 | len -= pages * PAGE_SIZE; | |
1246 | ||
1247 | argp->p = (__be32 *)page_address(argp->pagelist[0]); | |
365da4ad | 1248 | argp->pagelist++; |
5a80a54d | 1249 | argp->end = argp->p + XDR_QUADLEN(PAGE_SIZE); |
1da177e4 | 1250 | } |
5a80a54d | 1251 | argp->p += XDR_QUADLEN(len); |
1da177e4 LT |
1252 | |
1253 | DECODE_TAIL; | |
1254 | } | |
1255 | ||
b37ad28b | 1256 | static __be32 |
1da177e4 LT |
1257 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
1258 | { | |
1259 | DECODE_HEAD; | |
1260 | ||
e1a90ebd AS |
1261 | if (argp->minorversion >= 1) |
1262 | return nfserr_notsupp; | |
1263 | ||
1da177e4 LT |
1264 | READ_BUF(12); |
1265 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
06553991 | 1266 | rlockowner->rl_owner.len = be32_to_cpup(p++); |
1da177e4 LT |
1267 | READ_BUF(rlockowner->rl_owner.len); |
1268 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
1269 | ||
60adfc50 AA |
1270 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1271 | return nfserr_inval; | |
1da177e4 LT |
1272 | DECODE_TAIL; |
1273 | } | |
1274 | ||
2db134eb AA |
1275 | static __be32 |
1276 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1277 | struct nfsd4_exchange_id *exid) |
2db134eb | 1278 | { |
5afa040b | 1279 | int dummy, tmp; |
0733d213 AA |
1280 | DECODE_HEAD; |
1281 | ||
1282 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1283 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1284 | ||
a084daf5 BF |
1285 | status = nfsd4_decode_opaque(argp, &exid->clname); |
1286 | if (status) | |
1287 | return nfserr_bad_xdr; | |
0733d213 AA |
1288 | |
1289 | READ_BUF(4); | |
06553991 | 1290 | exid->flags = be32_to_cpup(p++); |
0733d213 AA |
1291 | |
1292 | /* Ignore state_protect4_a */ | |
1293 | READ_BUF(4); | |
06553991 | 1294 | exid->spa_how = be32_to_cpup(p++); |
0733d213 AA |
1295 | switch (exid->spa_how) { |
1296 | case SP4_NONE: | |
1297 | break; | |
1298 | case SP4_MACH_CRED: | |
1299 | /* spo_must_enforce */ | |
1300 | READ_BUF(4); | |
06553991 | 1301 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1302 | READ_BUF(dummy * 4); |
1303 | p += dummy; | |
1304 | ||
1305 | /* spo_must_allow */ | |
1306 | READ_BUF(4); | |
06553991 | 1307 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1308 | READ_BUF(dummy * 4); |
1309 | p += dummy; | |
1310 | break; | |
1311 | case SP4_SSV: | |
1312 | /* ssp_ops */ | |
1313 | READ_BUF(4); | |
06553991 | 1314 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1315 | READ_BUF(dummy * 4); |
1316 | p += dummy; | |
1317 | ||
1318 | READ_BUF(4); | |
06553991 | 1319 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1320 | READ_BUF(dummy * 4); |
1321 | p += dummy; | |
1322 | ||
1323 | /* ssp_hash_algs<> */ | |
1324 | READ_BUF(4); | |
06553991 | 1325 | tmp = be32_to_cpup(p++); |
5afa040b MJ |
1326 | while (tmp--) { |
1327 | READ_BUF(4); | |
06553991 | 1328 | dummy = be32_to_cpup(p++); |
5afa040b MJ |
1329 | READ_BUF(dummy); |
1330 | p += XDR_QUADLEN(dummy); | |
1331 | } | |
0733d213 AA |
1332 | |
1333 | /* ssp_encr_algs<> */ | |
1334 | READ_BUF(4); | |
06553991 | 1335 | tmp = be32_to_cpup(p++); |
5afa040b MJ |
1336 | while (tmp--) { |
1337 | READ_BUF(4); | |
06553991 | 1338 | dummy = be32_to_cpup(p++); |
5afa040b MJ |
1339 | READ_BUF(dummy); |
1340 | p += XDR_QUADLEN(dummy); | |
1341 | } | |
0733d213 AA |
1342 | |
1343 | /* ssp_window and ssp_num_gss_handles */ | |
1344 | READ_BUF(8); | |
06553991 BF |
1345 | dummy = be32_to_cpup(p++); |
1346 | dummy = be32_to_cpup(p++); | |
0733d213 AA |
1347 | break; |
1348 | default: | |
1349 | goto xdr_error; | |
1350 | } | |
1351 | ||
1352 | /* Ignore Implementation ID */ | |
1353 | READ_BUF(4); /* nfs_impl_id4 array length */ | |
06553991 | 1354 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1355 | |
1356 | if (dummy > 1) | |
1357 | goto xdr_error; | |
1358 | ||
1359 | if (dummy == 1) { | |
1360 | /* nii_domain */ | |
1361 | READ_BUF(4); | |
06553991 | 1362 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1363 | READ_BUF(dummy); |
1364 | p += XDR_QUADLEN(dummy); | |
1365 | ||
1366 | /* nii_name */ | |
1367 | READ_BUF(4); | |
06553991 | 1368 | dummy = be32_to_cpup(p++); |
0733d213 AA |
1369 | READ_BUF(dummy); |
1370 | p += XDR_QUADLEN(dummy); | |
1371 | ||
1372 | /* nii_date */ | |
1373 | READ_BUF(12); | |
1374 | p += 3; | |
1375 | } | |
1376 | DECODE_TAIL; | |
2db134eb AA |
1377 | } |
1378 | ||
1379 | static __be32 | |
1380 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1381 | struct nfsd4_create_session *sess) | |
1382 | { | |
ec6b5d7b | 1383 | DECODE_HEAD; |
ec6b5d7b | 1384 | u32 dummy; |
ec6b5d7b AA |
1385 | |
1386 | READ_BUF(16); | |
1387 | COPYMEM(&sess->clientid, 8); | |
06553991 BF |
1388 | sess->seqid = be32_to_cpup(p++); |
1389 | sess->flags = be32_to_cpup(p++); | |
ec6b5d7b AA |
1390 | |
1391 | /* Fore channel attrs */ | |
1392 | READ_BUF(28); | |
06553991 BF |
1393 | dummy = be32_to_cpup(p++); /* headerpadsz is always 0 */ |
1394 | sess->fore_channel.maxreq_sz = be32_to_cpup(p++); | |
1395 | sess->fore_channel.maxresp_sz = be32_to_cpup(p++); | |
1396 | sess->fore_channel.maxresp_cached = be32_to_cpup(p++); | |
1397 | sess->fore_channel.maxops = be32_to_cpup(p++); | |
1398 | sess->fore_channel.maxreqs = be32_to_cpup(p++); | |
1399 | sess->fore_channel.nr_rdma_attrs = be32_to_cpup(p++); | |
ec6b5d7b AA |
1400 | if (sess->fore_channel.nr_rdma_attrs == 1) { |
1401 | READ_BUF(4); | |
06553991 | 1402 | sess->fore_channel.rdma_attrs = be32_to_cpup(p++); |
ec6b5d7b AA |
1403 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { |
1404 | dprintk("Too many fore channel attr bitmaps!\n"); | |
1405 | goto xdr_error; | |
1406 | } | |
1407 | ||
1408 | /* Back channel attrs */ | |
1409 | READ_BUF(28); | |
06553991 BF |
1410 | dummy = be32_to_cpup(p++); /* headerpadsz is always 0 */ |
1411 | sess->back_channel.maxreq_sz = be32_to_cpup(p++); | |
1412 | sess->back_channel.maxresp_sz = be32_to_cpup(p++); | |
1413 | sess->back_channel.maxresp_cached = be32_to_cpup(p++); | |
1414 | sess->back_channel.maxops = be32_to_cpup(p++); | |
1415 | sess->back_channel.maxreqs = be32_to_cpup(p++); | |
1416 | sess->back_channel.nr_rdma_attrs = be32_to_cpup(p++); | |
ec6b5d7b AA |
1417 | if (sess->back_channel.nr_rdma_attrs == 1) { |
1418 | READ_BUF(4); | |
06553991 | 1419 | sess->back_channel.rdma_attrs = be32_to_cpup(p++); |
ec6b5d7b AA |
1420 | } else if (sess->back_channel.nr_rdma_attrs > 1) { |
1421 | dprintk("Too many back channel attr bitmaps!\n"); | |
1422 | goto xdr_error; | |
1423 | } | |
1424 | ||
acb2887e | 1425 | READ_BUF(4); |
06553991 | 1426 | sess->callback_prog = be32_to_cpup(p++); |
acb2887e | 1427 | nfsd4_decode_cb_sec(argp, &sess->cb_sec); |
ec6b5d7b | 1428 | DECODE_TAIL; |
2db134eb AA |
1429 | } |
1430 | ||
1431 | static __be32 | |
1432 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, | |
1433 | struct nfsd4_destroy_session *destroy_session) | |
1434 | { | |
e10e0cfc BH |
1435 | DECODE_HEAD; |
1436 | READ_BUF(NFS4_MAX_SESSIONID_LEN); | |
1437 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1438 | ||
1439 | DECODE_TAIL; | |
2db134eb AA |
1440 | } |
1441 | ||
e1ca12df BS |
1442 | static __be32 |
1443 | nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp, | |
1444 | struct nfsd4_free_stateid *free_stateid) | |
1445 | { | |
1446 | DECODE_HEAD; | |
1447 | ||
1448 | READ_BUF(sizeof(stateid_t)); | |
06553991 | 1449 | free_stateid->fr_stateid.si_generation = be32_to_cpup(p++); |
e1ca12df BS |
1450 | COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t)); |
1451 | ||
1452 | DECODE_TAIL; | |
1453 | } | |
1454 | ||
2db134eb AA |
1455 | static __be32 |
1456 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, | |
1457 | struct nfsd4_sequence *seq) | |
1458 | { | |
b85d4c01 BH |
1459 | DECODE_HEAD; |
1460 | ||
1461 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); | |
1462 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
06553991 BF |
1463 | seq->seqid = be32_to_cpup(p++); |
1464 | seq->slotid = be32_to_cpup(p++); | |
1465 | seq->maxslots = be32_to_cpup(p++); | |
1466 | seq->cachethis = be32_to_cpup(p++); | |
b85d4c01 BH |
1467 | |
1468 | DECODE_TAIL; | |
2db134eb AA |
1469 | } |
1470 | ||
17456804 BS |
1471 | static __be32 |
1472 | nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid) | |
1473 | { | |
17456804 | 1474 | int i; |
03cfb420 BS |
1475 | __be32 *p, status; |
1476 | struct nfsd4_test_stateid_id *stateid; | |
17456804 BS |
1477 | |
1478 | READ_BUF(4); | |
1479 | test_stateid->ts_num_ids = ntohl(*p++); | |
1480 | ||
03cfb420 | 1481 | INIT_LIST_HEAD(&test_stateid->ts_stateid_list); |
17456804 BS |
1482 | |
1483 | for (i = 0; i < test_stateid->ts_num_ids; i++) { | |
03cfb420 BS |
1484 | stateid = kmalloc(sizeof(struct nfsd4_test_stateid_id), GFP_KERNEL); |
1485 | if (!stateid) { | |
afcf6792 | 1486 | status = nfserrno(-ENOMEM); |
03cfb420 BS |
1487 | goto out; |
1488 | } | |
1489 | ||
1490 | defer_free(argp, kfree, stateid); | |
1491 | INIT_LIST_HEAD(&stateid->ts_id_list); | |
1492 | list_add_tail(&stateid->ts_id_list, &test_stateid->ts_stateid_list); | |
1493 | ||
1494 | status = nfsd4_decode_stateid(argp, &stateid->ts_id_stateid); | |
17456804 | 1495 | if (status) |
03cfb420 | 1496 | goto out; |
17456804 BS |
1497 | } |
1498 | ||
1499 | status = 0; | |
1500 | out: | |
1501 | return status; | |
1502 | xdr_error: | |
1503 | dprintk("NFSD: xdr error (%s:%d)\n", __FILE__, __LINE__); | |
1504 | status = nfserr_bad_xdr; | |
1505 | goto out; | |
1506 | } | |
1507 | ||
345c2842 MJ |
1508 | static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_clientid *dc) |
1509 | { | |
1510 | DECODE_HEAD; | |
1511 | ||
1512 | READ_BUF(8); | |
1513 | COPYMEM(&dc->clientid, 8); | |
1514 | ||
1515 | DECODE_TAIL; | |
1516 | } | |
1517 | ||
4dc6ec00 BF |
1518 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) |
1519 | { | |
1520 | DECODE_HEAD; | |
1521 | ||
1522 | READ_BUF(4); | |
06553991 | 1523 | rc->rca_one_fs = be32_to_cpup(p++); |
4dc6ec00 BF |
1524 | |
1525 | DECODE_TAIL; | |
1526 | } | |
1527 | ||
347e0ad9 BH |
1528 | static __be32 |
1529 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1530 | { | |
1531 | return nfs_ok; | |
1532 | } | |
1533 | ||
3c375c6f BH |
1534 | static __be32 |
1535 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1536 | { | |
1e685ec2 | 1537 | return nfserr_notsupp; |
3c375c6f BH |
1538 | } |
1539 | ||
347e0ad9 BH |
1540 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1541 | ||
1542 | static nfsd4_dec nfsd4_dec_ops[] = { | |
ad1060c8 BF |
1543 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1544 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1545 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1546 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1547 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1548 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1549 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1550 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1551 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1552 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1553 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1554 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1555 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1556 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1557 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1558 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1559 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1560 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1561 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1562 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
e1a90ebd | 1563 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_putpubfh, |
ad1060c8 BF |
1564 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1565 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1566 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1567 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1568 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1569 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1570 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1571 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1572 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1573 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1574 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1575 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1576 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1577 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1578 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1579 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
2db134eb AA |
1580 | |
1581 | /* new operations for NFSv4.1 */ | |
cb73a9f4 | 1582 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_backchannel_ctl, |
1d1bc8f2 | 1583 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
9064caae RD |
1584 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
1585 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
1586 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
e1ca12df | 1587 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, |
9064caae RD |
1588 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
1589 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1590 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1591 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1592 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1593 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
04f4ad16 | 1594 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
9064caae RD |
1595 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
1596 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
17456804 | 1597 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid, |
9064caae | 1598 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
345c2842 | 1599 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, |
4dc6ec00 | 1600 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
2db134eb AA |
1601 | }; |
1602 | ||
e1a90ebd AS |
1603 | static inline bool |
1604 | nfsd4_opnum_in_range(struct nfsd4_compoundargs *argp, struct nfsd4_op *op) | |
1605 | { | |
8217d146 | 1606 | if (op->opnum < FIRST_NFS4_OP) |
e1a90ebd | 1607 | return false; |
8217d146 | 1608 | else if (argp->minorversion == 0 && op->opnum > LAST_NFS40_OP) |
e1a90ebd | 1609 | return false; |
8217d146 AS |
1610 | else if (argp->minorversion == 1 && op->opnum > LAST_NFS41_OP) |
1611 | return false; | |
1612 | else if (argp->minorversion == 2 && op->opnum > LAST_NFS42_OP) | |
e1a90ebd AS |
1613 | return false; |
1614 | return true; | |
1615 | } | |
f2feb96b | 1616 | |
b37ad28b | 1617 | static __be32 |
1da177e4 LT |
1618 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1619 | { | |
1620 | DECODE_HEAD; | |
1621 | struct nfsd4_op *op; | |
1091006c | 1622 | bool cachethis = false; |
a5cddc88 BF |
1623 | int auth_slack= argp->rqstp->rq_auth_slack; |
1624 | int max_reply = auth_slack + 8; /* opcnt, status */ | |
b0e35fda BF |
1625 | int readcount = 0; |
1626 | int readbytes = 0; | |
1da177e4 LT |
1627 | int i; |
1628 | ||
1da177e4 | 1629 | READ_BUF(4); |
06553991 | 1630 | argp->taglen = be32_to_cpup(p++); |
1da177e4 LT |
1631 | READ_BUF(argp->taglen + 8); |
1632 | SAVEMEM(argp->tag, argp->taglen); | |
06553991 BF |
1633 | argp->minorversion = be32_to_cpup(p++); |
1634 | argp->opcnt = be32_to_cpup(p++); | |
4f0cefbf | 1635 | max_reply += 4 + (XDR_QUADLEN(argp->taglen) << 2); |
1da177e4 LT |
1636 | |
1637 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1638 | goto xdr_error; | |
1639 | if (argp->opcnt > 100) | |
1640 | goto xdr_error; | |
1641 | ||
e8c96f8c | 1642 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
1da177e4 LT |
1643 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1644 | if (!argp->ops) { | |
1645 | argp->ops = argp->iops; | |
817cb9d4 | 1646 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1647 | goto xdr_error; |
1648 | } | |
1649 | } | |
1650 | ||
e1a90ebd | 1651 | if (argp->minorversion > NFSD_SUPPORTED_MINOR_VERSION) |
30cff1ff BH |
1652 | argp->opcnt = 0; |
1653 | ||
1da177e4 LT |
1654 | for (i = 0; i < argp->opcnt; i++) { |
1655 | op = &argp->ops[i]; | |
1656 | op->replay = NULL; | |
1657 | ||
8a61b18c | 1658 | READ_BUF(4); |
06553991 | 1659 | op->opnum = be32_to_cpup(p++); |
1da177e4 | 1660 | |
e1a90ebd AS |
1661 | if (nfsd4_opnum_in_range(argp, op)) |
1662 | op->status = nfsd4_dec_ops[op->opnum](argp, &op->u); | |
347e0ad9 | 1663 | else { |
1da177e4 LT |
1664 | op->opnum = OP_ILLEGAL; |
1665 | op->status = nfserr_op_illegal; | |
1da177e4 | 1666 | } |
1091006c BF |
1667 | /* |
1668 | * We'll try to cache the result in the DRC if any one | |
1669 | * op in the compound wants to be cached: | |
1670 | */ | |
1671 | cachethis |= nfsd4_cache_this_op(op); | |
6ff40dec | 1672 | |
b0e35fda BF |
1673 | if (op->opnum == OP_READ) { |
1674 | readcount++; | |
1675 | readbytes += nfsd4_max_reply(argp->rqstp, op); | |
1676 | } else | |
1677 | max_reply += nfsd4_max_reply(argp->rqstp, op); | |
e372ba60 BF |
1678 | |
1679 | if (op->status) { | |
1680 | argp->opcnt = i+1; | |
1681 | break; | |
1682 | } | |
1da177e4 | 1683 | } |
1091006c BF |
1684 | /* Sessions make the DRC unnecessary: */ |
1685 | if (argp->minorversion) | |
1686 | cachethis = false; | |
b0e35fda | 1687 | svc_reserve(argp->rqstp, max_reply + readbytes); |
1091006c | 1688 | argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; |
1da177e4 | 1689 | |
a5cddc88 | 1690 | if (readcount > 1 || max_reply > PAGE_SIZE - auth_slack) |
b0e35fda BF |
1691 | argp->rqstp->rq_splice_ok = false; |
1692 | ||
1da177e4 LT |
1693 | DECODE_TAIL; |
1694 | } | |
1da177e4 | 1695 | |
d05d5744 | 1696 | static __be32 *encode_change(__be32 *p, struct kstat *stat, struct inode *inode) |
c654b8a9 BF |
1697 | { |
1698 | if (IS_I_VERSION(inode)) { | |
d05d5744 | 1699 | p = xdr_encode_hyper(p, inode->i_version); |
c654b8a9 | 1700 | } else { |
d05d5744 BF |
1701 | *p++ = cpu_to_be32(stat->ctime.tv_sec); |
1702 | *p++ = cpu_to_be32(stat->ctime.tv_nsec); | |
c654b8a9 | 1703 | } |
d05d5744 | 1704 | return p; |
c654b8a9 BF |
1705 | } |
1706 | ||
d05d5744 | 1707 | static __be32 *encode_cinfo(__be32 *p, struct nfsd4_change_info *c) |
c654b8a9 | 1708 | { |
d05d5744 | 1709 | *p++ = cpu_to_be32(c->atomic); |
c654b8a9 | 1710 | if (c->change_supported) { |
d05d5744 BF |
1711 | p = xdr_encode_hyper(p, c->before_change); |
1712 | p = xdr_encode_hyper(p, c->after_change); | |
c654b8a9 | 1713 | } else { |
d05d5744 BF |
1714 | *p++ = cpu_to_be32(c->before_ctime_sec); |
1715 | *p++ = cpu_to_be32(c->before_ctime_nsec); | |
1716 | *p++ = cpu_to_be32(c->after_ctime_sec); | |
1717 | *p++ = cpu_to_be32(c->after_ctime_nsec); | |
c654b8a9 | 1718 | } |
d05d5744 | 1719 | return p; |
c654b8a9 | 1720 | } |
1da177e4 | 1721 | |
81c3f413 | 1722 | /* Encode as an array of strings the string given with components |
e7a0444a | 1723 | * separated @sep, escaped with esc_enter and esc_exit. |
81c3f413 | 1724 | */ |
ddd1ea56 BF |
1725 | static __be32 nfsd4_encode_components_esc(struct xdr_stream *xdr, char sep, |
1726 | char *components, char esc_enter, | |
1727 | char esc_exit) | |
81c3f413 | 1728 | { |
ddd1ea56 | 1729 | __be32 *p; |
082d4bd7 BF |
1730 | __be32 pathlen; |
1731 | int pathlen_offset; | |
81c3f413 | 1732 | int strlen, count=0; |
e7a0444a | 1733 | char *str, *end, *next; |
81c3f413 BF |
1734 | |
1735 | dprintk("nfsd4_encode_components(%s)\n", components); | |
082d4bd7 BF |
1736 | |
1737 | pathlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
1738 | p = xdr_reserve_space(xdr, 4); |
1739 | if (!p) | |
81c3f413 | 1740 | return nfserr_resource; |
082d4bd7 BF |
1741 | p++; /* We will fill this in with @count later */ |
1742 | ||
81c3f413 BF |
1743 | end = str = components; |
1744 | while (*end) { | |
e7a0444a WAA |
1745 | bool found_esc = false; |
1746 | ||
1747 | /* try to parse as esc_start, ..., esc_end, sep */ | |
1748 | if (*str == esc_enter) { | |
1749 | for (; *end && (*end != esc_exit); end++) | |
1750 | /* find esc_exit or end of string */; | |
1751 | next = end + 1; | |
1752 | if (*end && (!*next || *next == sep)) { | |
1753 | str++; | |
1754 | found_esc = true; | |
1755 | } | |
1756 | } | |
1757 | ||
1758 | if (!found_esc) | |
1759 | for (; *end && (*end != sep); end++) | |
1760 | /* find sep or end of string */; | |
1761 | ||
81c3f413 BF |
1762 | strlen = end - str; |
1763 | if (strlen) { | |
ddd1ea56 BF |
1764 | p = xdr_reserve_space(xdr, strlen + 4); |
1765 | if (!p) | |
81c3f413 | 1766 | return nfserr_resource; |
0c0c267b | 1767 | p = xdr_encode_opaque(p, str, strlen); |
81c3f413 BF |
1768 | count++; |
1769 | } | |
1770 | else | |
1771 | end++; | |
1772 | str = end; | |
1773 | } | |
082d4bd7 BF |
1774 | pathlen = htonl(xdr->buf->len - pathlen_offset); |
1775 | write_bytes_to_xdr_buf(xdr->buf, pathlen_offset, &pathlen, 4); | |
81c3f413 BF |
1776 | return 0; |
1777 | } | |
1778 | ||
e7a0444a WAA |
1779 | /* Encode as an array of strings the string given with components |
1780 | * separated @sep. | |
1781 | */ | |
ddd1ea56 BF |
1782 | static __be32 nfsd4_encode_components(struct xdr_stream *xdr, char sep, |
1783 | char *components) | |
e7a0444a | 1784 | { |
ddd1ea56 | 1785 | return nfsd4_encode_components_esc(xdr, sep, components, 0, 0); |
e7a0444a WAA |
1786 | } |
1787 | ||
81c3f413 BF |
1788 | /* |
1789 | * encode a location element of a fs_locations structure | |
1790 | */ | |
ddd1ea56 BF |
1791 | static __be32 nfsd4_encode_fs_location4(struct xdr_stream *xdr, |
1792 | struct nfsd4_fs_location *location) | |
81c3f413 | 1793 | { |
b37ad28b | 1794 | __be32 status; |
81c3f413 | 1795 | |
ddd1ea56 | 1796 | status = nfsd4_encode_components_esc(xdr, ':', location->hosts, |
e7a0444a | 1797 | '[', ']'); |
81c3f413 BF |
1798 | if (status) |
1799 | return status; | |
ddd1ea56 | 1800 | status = nfsd4_encode_components(xdr, '/', location->path); |
81c3f413 BF |
1801 | if (status) |
1802 | return status; | |
81c3f413 BF |
1803 | return 0; |
1804 | } | |
1805 | ||
1806 | /* | |
ed748aac | 1807 | * Encode a path in RFC3530 'pathname4' format |
81c3f413 | 1808 | */ |
ddd1ea56 BF |
1809 | static __be32 nfsd4_encode_path(struct xdr_stream *xdr, |
1810 | const struct path *root, | |
1811 | const struct path *path) | |
81c3f413 | 1812 | { |
301f0268 | 1813 | struct path cur = *path; |
ddd1ea56 | 1814 | __be32 *p; |
ed748aac TM |
1815 | struct dentry **components = NULL; |
1816 | unsigned int ncomponents = 0; | |
1817 | __be32 err = nfserr_jukebox; | |
81c3f413 | 1818 | |
ed748aac | 1819 | dprintk("nfsd4_encode_components("); |
81c3f413 | 1820 | |
ed748aac TM |
1821 | path_get(&cur); |
1822 | /* First walk the path up to the nfsd root, and store the | |
1823 | * dentries/path components in an array. | |
1824 | */ | |
1825 | for (;;) { | |
1826 | if (cur.dentry == root->dentry && cur.mnt == root->mnt) | |
1827 | break; | |
1828 | if (cur.dentry == cur.mnt->mnt_root) { | |
1829 | if (follow_up(&cur)) | |
1830 | continue; | |
1831 | goto out_free; | |
1832 | } | |
1833 | if ((ncomponents & 15) == 0) { | |
1834 | struct dentry **new; | |
1835 | new = krealloc(components, | |
1836 | sizeof(*new) * (ncomponents + 16), | |
1837 | GFP_KERNEL); | |
1838 | if (!new) | |
1839 | goto out_free; | |
1840 | components = new; | |
1841 | } | |
1842 | components[ncomponents++] = cur.dentry; | |
1843 | cur.dentry = dget_parent(cur.dentry); | |
1844 | } | |
ddd1ea56 BF |
1845 | err = nfserr_resource; |
1846 | p = xdr_reserve_space(xdr, 4); | |
1847 | if (!p) | |
ed748aac | 1848 | goto out_free; |
c373b0a4 | 1849 | *p++ = cpu_to_be32(ncomponents); |
ed748aac TM |
1850 | |
1851 | while (ncomponents) { | |
1852 | struct dentry *dentry = components[ncomponents - 1]; | |
301f0268 | 1853 | unsigned int len; |
ed748aac | 1854 | |
301f0268 AV |
1855 | spin_lock(&dentry->d_lock); |
1856 | len = dentry->d_name.len; | |
ddd1ea56 BF |
1857 | p = xdr_reserve_space(xdr, len + 4); |
1858 | if (!p) { | |
301f0268 | 1859 | spin_unlock(&dentry->d_lock); |
ed748aac | 1860 | goto out_free; |
301f0268 | 1861 | } |
0c0c267b | 1862 | p = xdr_encode_opaque(p, dentry->d_name.name, len); |
ed748aac | 1863 | dprintk("/%s", dentry->d_name.name); |
301f0268 | 1864 | spin_unlock(&dentry->d_lock); |
ed748aac TM |
1865 | dput(dentry); |
1866 | ncomponents--; | |
81c3f413 | 1867 | } |
ed748aac | 1868 | |
ed748aac TM |
1869 | err = 0; |
1870 | out_free: | |
1871 | dprintk(")\n"); | |
1872 | while (ncomponents) | |
1873 | dput(components[--ncomponents]); | |
1874 | kfree(components); | |
1875 | path_put(&cur); | |
1876 | return err; | |
1877 | } | |
1878 | ||
ddd1ea56 BF |
1879 | static __be32 nfsd4_encode_fsloc_fsroot(struct xdr_stream *xdr, |
1880 | struct svc_rqst *rqstp, const struct path *path) | |
ed748aac TM |
1881 | { |
1882 | struct svc_export *exp_ps; | |
1883 | __be32 res; | |
1884 | ||
1885 | exp_ps = rqst_find_fsidzero_export(rqstp); | |
1886 | if (IS_ERR(exp_ps)) | |
1887 | return nfserrno(PTR_ERR(exp_ps)); | |
ddd1ea56 | 1888 | res = nfsd4_encode_path(xdr, &exp_ps->ex_path, path); |
ed748aac TM |
1889 | exp_put(exp_ps); |
1890 | return res; | |
81c3f413 BF |
1891 | } |
1892 | ||
1893 | /* | |
1894 | * encode a fs_locations structure | |
1895 | */ | |
ddd1ea56 BF |
1896 | static __be32 nfsd4_encode_fs_locations(struct xdr_stream *xdr, |
1897 | struct svc_rqst *rqstp, struct svc_export *exp) | |
81c3f413 | 1898 | { |
b37ad28b | 1899 | __be32 status; |
cc45f017 | 1900 | int i; |
ddd1ea56 | 1901 | __be32 *p; |
81c3f413 | 1902 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
81c3f413 | 1903 | |
ddd1ea56 | 1904 | status = nfsd4_encode_fsloc_fsroot(xdr, rqstp, &exp->ex_path); |
81c3f413 BF |
1905 | if (status) |
1906 | return status; | |
ddd1ea56 BF |
1907 | p = xdr_reserve_space(xdr, 4); |
1908 | if (!p) | |
81c3f413 | 1909 | return nfserr_resource; |
c373b0a4 | 1910 | *p++ = cpu_to_be32(fslocs->locations_count); |
81c3f413 | 1911 | for (i=0; i<fslocs->locations_count; i++) { |
ddd1ea56 | 1912 | status = nfsd4_encode_fs_location4(xdr, &fslocs->locations[i]); |
81c3f413 BF |
1913 | if (status) |
1914 | return status; | |
1915 | } | |
81c3f413 BF |
1916 | return 0; |
1917 | } | |
1da177e4 | 1918 | |
3d2544b1 BF |
1919 | static u32 nfs4_file_type(umode_t mode) |
1920 | { | |
1921 | switch (mode & S_IFMT) { | |
1922 | case S_IFIFO: return NF4FIFO; | |
1923 | case S_IFCHR: return NF4CHR; | |
1924 | case S_IFDIR: return NF4DIR; | |
1925 | case S_IFBLK: return NF4BLK; | |
1926 | case S_IFLNK: return NF4LNK; | |
1927 | case S_IFREG: return NF4REG; | |
1928 | case S_IFSOCK: return NF4SOCK; | |
1929 | default: return NF4BAD; | |
1930 | }; | |
1931 | } | |
1da177e4 | 1932 | |
b37ad28b | 1933 | static inline __be32 |
ddd1ea56 BF |
1934 | nfsd4_encode_aclname(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
1935 | struct nfs4_ace *ace) | |
1da177e4 | 1936 | { |
3554116d | 1937 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ddd1ea56 | 1938 | return nfs4_acl_write_who(xdr, ace->whotype); |
3554116d | 1939 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
ddd1ea56 | 1940 | return nfsd4_encode_group(xdr, rqstp, ace->who_gid); |
3554116d | 1941 | else |
ddd1ea56 | 1942 | return nfsd4_encode_user(xdr, rqstp, ace->who_uid); |
1da177e4 LT |
1943 | } |
1944 | ||
42ca0993 BF |
1945 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
1946 | FATTR4_WORD0_RDATTR_ERROR) | |
1947 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
1948 | ||
18032ca0 DQ |
1949 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
1950 | static inline __be32 | |
ddd1ea56 BF |
1951 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
1952 | void *context, int len) | |
18032ca0 | 1953 | { |
ddd1ea56 | 1954 | __be32 *p; |
18032ca0 | 1955 | |
ddd1ea56 BF |
1956 | p = xdr_reserve_space(xdr, len + 4 + 4 + 4); |
1957 | if (!p) | |
18032ca0 DQ |
1958 | return nfserr_resource; |
1959 | ||
1960 | /* | |
1961 | * For now we use a 0 here to indicate the null translation; in | |
1962 | * the future we may place a call to translation code here. | |
1963 | */ | |
c373b0a4 BF |
1964 | *p++ = cpu_to_be32(0); /* lfs */ |
1965 | *p++ = cpu_to_be32(0); /* pi */ | |
18032ca0 | 1966 | p = xdr_encode_opaque(p, context, len); |
18032ca0 DQ |
1967 | return 0; |
1968 | } | |
1969 | #else | |
1970 | static inline __be32 | |
ddd1ea56 BF |
1971 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
1972 | void *context, int len) | |
18032ca0 DQ |
1973 | { return 0; } |
1974 | #endif | |
1975 | ||
b37ad28b | 1976 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
42ca0993 BF |
1977 | { |
1978 | /* As per referral draft: */ | |
1979 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
1980 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
1981 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
1982 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
1983 | *rdattr_err = NFSERR_MOVED; | |
1984 | else | |
1985 | return nfserr_moved; | |
1986 | } | |
1987 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
1988 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
1989 | return 0; | |
1990 | } | |
1da177e4 | 1991 | |
ae7095a7 BF |
1992 | |
1993 | static int get_parent_attributes(struct svc_export *exp, struct kstat *stat) | |
1994 | { | |
1995 | struct path path = exp->ex_path; | |
1996 | int err; | |
1997 | ||
1998 | path_get(&path); | |
1999 | while (follow_up(&path)) { | |
2000 | if (path.dentry != path.mnt->mnt_root) | |
2001 | break; | |
2002 | } | |
3dadecce | 2003 | err = vfs_getattr(&path, stat); |
ae7095a7 BF |
2004 | path_put(&path); |
2005 | return err; | |
2006 | } | |
2007 | ||
1da177e4 LT |
2008 | /* |
2009 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
2010 | * ourselves. | |
1da177e4 | 2011 | */ |
da2ebce6 | 2012 | static __be32 |
d5184658 BF |
2013 | nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp, |
2014 | struct svc_export *exp, | |
2015 | struct dentry *dentry, u32 *bmval, | |
406a7ea9 | 2016 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
2017 | { |
2018 | u32 bmval0 = bmval[0]; | |
2019 | u32 bmval1 = bmval[1]; | |
7e705706 | 2020 | u32 bmval2 = bmval[2]; |
1da177e4 | 2021 | struct kstat stat; |
d50e6136 | 2022 | struct svc_fh *tempfh = NULL; |
1da177e4 | 2023 | struct kstatfs statfs; |
ddd1ea56 | 2024 | __be32 *p; |
1fcea5b2 | 2025 | int starting_len = xdr->buf->len; |
082d4bd7 BF |
2026 | int attrlen_offset; |
2027 | __be32 attrlen; | |
1da177e4 LT |
2028 | u32 dummy; |
2029 | u64 dummy64; | |
42ca0993 | 2030 | u32 rdattr_err = 0; |
b37ad28b | 2031 | __be32 status; |
b8dd7b9a | 2032 | int err; |
1da177e4 LT |
2033 | int aclsupport = 0; |
2034 | struct nfs4_acl *acl = NULL; | |
18032ca0 DQ |
2035 | void *context = NULL; |
2036 | int contextlen; | |
2037 | bool contextsupport = false; | |
7e705706 AA |
2038 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
2039 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
2040 | struct path path = { |
2041 | .mnt = exp->ex_path.mnt, | |
2042 | .dentry = dentry, | |
2043 | }; | |
3d733711 | 2044 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
1da177e4 LT |
2045 | |
2046 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
7e705706 AA |
2047 | BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); |
2048 | BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); | |
2049 | BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); | |
1da177e4 | 2050 | |
42ca0993 | 2051 | if (exp->ex_fslocs.migrated) { |
7e705706 | 2052 | BUG_ON(bmval[2]); |
42ca0993 BF |
2053 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); |
2054 | if (status) | |
2055 | goto out; | |
2056 | } | |
2057 | ||
3dadecce | 2058 | err = vfs_getattr(&path, &stat); |
b8dd7b9a | 2059 | if (err) |
1da177e4 | 2060 | goto out_nfserr; |
12337901 CH |
2061 | if ((bmval0 & (FATTR4_WORD0_FILES_AVAIL | FATTR4_WORD0_FILES_FREE | |
2062 | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
2063 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
2064 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 2065 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 2066 | if (err) |
1da177e4 LT |
2067 | goto out_nfserr; |
2068 | } | |
2069 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
d50e6136 BF |
2070 | tempfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); |
2071 | status = nfserr_jukebox; | |
2072 | if (!tempfh) | |
2073 | goto out; | |
2074 | fh_init(tempfh, NFS4_FHSIZE); | |
2075 | status = fh_compose(tempfh, exp, dentry, NULL); | |
1da177e4 LT |
2076 | if (status) |
2077 | goto out; | |
d50e6136 | 2078 | fhp = tempfh; |
1da177e4 LT |
2079 | } |
2080 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
2081 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
b8dd7b9a AV |
2082 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
2083 | aclsupport = (err == 0); | |
1da177e4 | 2084 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 2085 | if (err == -EOPNOTSUPP) |
1da177e4 | 2086 | bmval0 &= ~FATTR4_WORD0_ACL; |
b8dd7b9a | 2087 | else if (err == -EINVAL) { |
1da177e4 LT |
2088 | status = nfserr_attrnotsupp; |
2089 | goto out; | |
b8dd7b9a | 2090 | } else if (err != 0) |
1da177e4 LT |
2091 | goto out_nfserr; |
2092 | } | |
2093 | } | |
1da177e4 | 2094 | |
18032ca0 DQ |
2095 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
2096 | if ((bmval[2] & FATTR4_WORD2_SECURITY_LABEL) || | |
2097 | bmval[0] & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
2098 | err = security_inode_getsecctx(dentry->d_inode, | |
2099 | &context, &contextlen); | |
2100 | contextsupport = (err == 0); | |
2101 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { | |
2102 | if (err == -EOPNOTSUPP) | |
2103 | bmval2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2104 | else if (err) | |
2105 | goto out_nfserr; | |
2106 | } | |
2107 | } | |
2108 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ | |
2109 | ||
2b44f1ba | 2110 | if (bmval2) { |
ddd1ea56 BF |
2111 | p = xdr_reserve_space(xdr, 16); |
2112 | if (!p) | |
2b44f1ba | 2113 | goto out_resource; |
c373b0a4 BF |
2114 | *p++ = cpu_to_be32(3); |
2115 | *p++ = cpu_to_be32(bmval0); | |
2116 | *p++ = cpu_to_be32(bmval1); | |
2117 | *p++ = cpu_to_be32(bmval2); | |
2b44f1ba | 2118 | } else if (bmval1) { |
ddd1ea56 BF |
2119 | p = xdr_reserve_space(xdr, 12); |
2120 | if (!p) | |
2b44f1ba | 2121 | goto out_resource; |
c373b0a4 BF |
2122 | *p++ = cpu_to_be32(2); |
2123 | *p++ = cpu_to_be32(bmval0); | |
2124 | *p++ = cpu_to_be32(bmval1); | |
7e705706 | 2125 | } else { |
ddd1ea56 BF |
2126 | p = xdr_reserve_space(xdr, 8); |
2127 | if (!p) | |
2b44f1ba | 2128 | goto out_resource; |
c373b0a4 BF |
2129 | *p++ = cpu_to_be32(1); |
2130 | *p++ = cpu_to_be32(bmval0); | |
7e705706 | 2131 | } |
082d4bd7 BF |
2132 | |
2133 | attrlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
2134 | p = xdr_reserve_space(xdr, 4); |
2135 | if (!p) | |
2136 | goto out_resource; | |
082d4bd7 | 2137 | p++; /* to be backfilled later */ |
1da177e4 LT |
2138 | |
2139 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
7e705706 AA |
2140 | u32 word0 = nfsd_suppattrs0(minorversion); |
2141 | u32 word1 = nfsd_suppattrs1(minorversion); | |
2142 | u32 word2 = nfsd_suppattrs2(minorversion); | |
2143 | ||
42ca0993 BF |
2144 | if (!aclsupport) |
2145 | word0 &= ~FATTR4_WORD0_ACL; | |
18032ca0 DQ |
2146 | if (!contextsupport) |
2147 | word2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
7e705706 | 2148 | if (!word2) { |
ddd1ea56 BF |
2149 | p = xdr_reserve_space(xdr, 12); |
2150 | if (!p) | |
2b44f1ba | 2151 | goto out_resource; |
c373b0a4 BF |
2152 | *p++ = cpu_to_be32(2); |
2153 | *p++ = cpu_to_be32(word0); | |
2154 | *p++ = cpu_to_be32(word1); | |
7e705706 | 2155 | } else { |
ddd1ea56 BF |
2156 | p = xdr_reserve_space(xdr, 16); |
2157 | if (!p) | |
2b44f1ba | 2158 | goto out_resource; |
c373b0a4 BF |
2159 | *p++ = cpu_to_be32(3); |
2160 | *p++ = cpu_to_be32(word0); | |
2161 | *p++ = cpu_to_be32(word1); | |
2162 | *p++ = cpu_to_be32(word2); | |
7e705706 | 2163 | } |
1da177e4 LT |
2164 | } |
2165 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
ddd1ea56 BF |
2166 | p = xdr_reserve_space(xdr, 4); |
2167 | if (!p) | |
1da177e4 | 2168 | goto out_resource; |
3d2544b1 | 2169 | dummy = nfs4_file_type(stat.mode); |
6b6d8137 BF |
2170 | if (dummy == NF4BAD) { |
2171 | status = nfserr_serverfault; | |
2172 | goto out; | |
2173 | } | |
c373b0a4 | 2174 | *p++ = cpu_to_be32(dummy); |
1da177e4 LT |
2175 | } |
2176 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
ddd1ea56 BF |
2177 | p = xdr_reserve_space(xdr, 4); |
2178 | if (!p) | |
1da177e4 | 2179 | goto out_resource; |
49640001 | 2180 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
c373b0a4 | 2181 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT); |
49640001 | 2182 | else |
c373b0a4 BF |
2183 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT| |
2184 | NFS4_FH_VOL_RENAME); | |
1da177e4 LT |
2185 | } |
2186 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
ddd1ea56 BF |
2187 | p = xdr_reserve_space(xdr, 8); |
2188 | if (!p) | |
1da177e4 | 2189 | goto out_resource; |
d05d5744 | 2190 | p = encode_change(p, &stat, dentry->d_inode); |
1da177e4 LT |
2191 | } |
2192 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
ddd1ea56 BF |
2193 | p = xdr_reserve_space(xdr, 8); |
2194 | if (!p) | |
1da177e4 | 2195 | goto out_resource; |
b64c7f3b | 2196 | p = xdr_encode_hyper(p, stat.size); |
1da177e4 LT |
2197 | } |
2198 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
ddd1ea56 BF |
2199 | p = xdr_reserve_space(xdr, 4); |
2200 | if (!p) | |
1da177e4 | 2201 | goto out_resource; |
c373b0a4 | 2202 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2203 | } |
2204 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
ddd1ea56 BF |
2205 | p = xdr_reserve_space(xdr, 4); |
2206 | if (!p) | |
1da177e4 | 2207 | goto out_resource; |
c373b0a4 | 2208 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2209 | } |
2210 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
ddd1ea56 BF |
2211 | p = xdr_reserve_space(xdr, 4); |
2212 | if (!p) | |
1da177e4 | 2213 | goto out_resource; |
c373b0a4 | 2214 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2215 | } |
2216 | if (bmval0 & FATTR4_WORD0_FSID) { | |
ddd1ea56 BF |
2217 | p = xdr_reserve_space(xdr, 16); |
2218 | if (!p) | |
1da177e4 | 2219 | goto out_resource; |
42ca0993 | 2220 | if (exp->ex_fslocs.migrated) { |
b64c7f3b BF |
2221 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MAJOR); |
2222 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
2223 | } else switch(fsid_source(fhp)) { |
2224 | case FSIDSOURCE_FSID: | |
b64c7f3b BF |
2225 | p = xdr_encode_hyper(p, (u64)exp->ex_fsid); |
2226 | p = xdr_encode_hyper(p, (u64)0); | |
af6a4e28 N |
2227 | break; |
2228 | case FSIDSOURCE_DEV: | |
c373b0a4 BF |
2229 | *p++ = cpu_to_be32(0); |
2230 | *p++ = cpu_to_be32(MAJOR(stat.dev)); | |
2231 | *p++ = cpu_to_be32(0); | |
2232 | *p++ = cpu_to_be32(MINOR(stat.dev)); | |
af6a4e28 N |
2233 | break; |
2234 | case FSIDSOURCE_UUID: | |
94eb3689 KM |
2235 | p = xdr_encode_opaque_fixed(p, exp->ex_uuid, |
2236 | EX_UUID_LEN); | |
af6a4e28 | 2237 | break; |
1da177e4 LT |
2238 | } |
2239 | } | |
2240 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
ddd1ea56 BF |
2241 | p = xdr_reserve_space(xdr, 4); |
2242 | if (!p) | |
1da177e4 | 2243 | goto out_resource; |
c373b0a4 | 2244 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2245 | } |
2246 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
ddd1ea56 BF |
2247 | p = xdr_reserve_space(xdr, 4); |
2248 | if (!p) | |
1da177e4 | 2249 | goto out_resource; |
c373b0a4 | 2250 | *p++ = cpu_to_be32(nn->nfsd4_lease); |
1da177e4 LT |
2251 | } |
2252 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
ddd1ea56 BF |
2253 | p = xdr_reserve_space(xdr, 4); |
2254 | if (!p) | |
1da177e4 | 2255 | goto out_resource; |
c373b0a4 | 2256 | *p++ = cpu_to_be32(rdattr_err); |
1da177e4 LT |
2257 | } |
2258 | if (bmval0 & FATTR4_WORD0_ACL) { | |
2259 | struct nfs4_ace *ace; | |
1da177e4 LT |
2260 | |
2261 | if (acl == NULL) { | |
ddd1ea56 BF |
2262 | p = xdr_reserve_space(xdr, 4); |
2263 | if (!p) | |
1da177e4 LT |
2264 | goto out_resource; |
2265 | ||
c373b0a4 | 2266 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2267 | goto out_acl; |
2268 | } | |
ddd1ea56 BF |
2269 | p = xdr_reserve_space(xdr, 4); |
2270 | if (!p) | |
1da177e4 | 2271 | goto out_resource; |
c373b0a4 | 2272 | *p++ = cpu_to_be32(acl->naces); |
1da177e4 | 2273 | |
28e05dd8 | 2274 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
ddd1ea56 BF |
2275 | p = xdr_reserve_space(xdr, 4*3); |
2276 | if (!p) | |
1da177e4 | 2277 | goto out_resource; |
c373b0a4 BF |
2278 | *p++ = cpu_to_be32(ace->type); |
2279 | *p++ = cpu_to_be32(ace->flag); | |
2280 | *p++ = cpu_to_be32(ace->access_mask & | |
2281 | NFS4_ACE_MASK_ALL); | |
ddd1ea56 | 2282 | status = nfsd4_encode_aclname(xdr, rqstp, ace); |
1da177e4 LT |
2283 | if (status) |
2284 | goto out; | |
2285 | } | |
2286 | } | |
2287 | out_acl: | |
2288 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
ddd1ea56 BF |
2289 | p = xdr_reserve_space(xdr, 4); |
2290 | if (!p) | |
1da177e4 | 2291 | goto out_resource; |
c373b0a4 | 2292 | *p++ = cpu_to_be32(aclsupport ? |
1da177e4 LT |
2293 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); |
2294 | } | |
2295 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
ddd1ea56 BF |
2296 | p = xdr_reserve_space(xdr, 4); |
2297 | if (!p) | |
1da177e4 | 2298 | goto out_resource; |
c373b0a4 | 2299 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2300 | } |
2301 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
ddd1ea56 BF |
2302 | p = xdr_reserve_space(xdr, 4); |
2303 | if (!p) | |
1da177e4 | 2304 | goto out_resource; |
c373b0a4 | 2305 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
2306 | } |
2307 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
ddd1ea56 BF |
2308 | p = xdr_reserve_space(xdr, 4); |
2309 | if (!p) | |
1da177e4 | 2310 | goto out_resource; |
c373b0a4 | 2311 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2312 | } |
2313 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
ddd1ea56 BF |
2314 | p = xdr_reserve_space(xdr, 4); |
2315 | if (!p) | |
1da177e4 | 2316 | goto out_resource; |
c373b0a4 | 2317 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2318 | } |
2319 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
ddd1ea56 BF |
2320 | p = xdr_reserve_space(xdr, fhp->fh_handle.fh_size + 4); |
2321 | if (!p) | |
1da177e4 | 2322 | goto out_resource; |
0c0c267b BF |
2323 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, |
2324 | fhp->fh_handle.fh_size); | |
1da177e4 LT |
2325 | } |
2326 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
ddd1ea56 BF |
2327 | p = xdr_reserve_space(xdr, 8); |
2328 | if (!p) | |
1da177e4 | 2329 | goto out_resource; |
b64c7f3b | 2330 | p = xdr_encode_hyper(p, stat.ino); |
1da177e4 LT |
2331 | } |
2332 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
ddd1ea56 BF |
2333 | p = xdr_reserve_space(xdr, 8); |
2334 | if (!p) | |
1da177e4 | 2335 | goto out_resource; |
b64c7f3b | 2336 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
2337 | } |
2338 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
ddd1ea56 BF |
2339 | p = xdr_reserve_space(xdr, 8); |
2340 | if (!p) | |
1da177e4 | 2341 | goto out_resource; |
b64c7f3b | 2342 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
2343 | } |
2344 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
ddd1ea56 BF |
2345 | p = xdr_reserve_space(xdr, 8); |
2346 | if (!p) | |
1da177e4 | 2347 | goto out_resource; |
b64c7f3b | 2348 | p = xdr_encode_hyper(p, (u64) statfs.f_files); |
1da177e4 | 2349 | } |
81c3f413 | 2350 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
ddd1ea56 | 2351 | status = nfsd4_encode_fs_locations(xdr, rqstp, exp); |
81c3f413 BF |
2352 | if (status) |
2353 | goto out; | |
2354 | } | |
1da177e4 | 2355 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
ddd1ea56 BF |
2356 | p = xdr_reserve_space(xdr, 4); |
2357 | if (!p) | |
1da177e4 | 2358 | goto out_resource; |
c373b0a4 | 2359 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2360 | } |
2361 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
ddd1ea56 BF |
2362 | p = xdr_reserve_space(xdr, 8); |
2363 | if (!p) | |
1da177e4 | 2364 | goto out_resource; |
b64c7f3b | 2365 | p = xdr_encode_hyper(p, exp->ex_path.mnt->mnt_sb->s_maxbytes); |
1da177e4 LT |
2366 | } |
2367 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
ddd1ea56 BF |
2368 | p = xdr_reserve_space(xdr, 4); |
2369 | if (!p) | |
1da177e4 | 2370 | goto out_resource; |
c373b0a4 | 2371 | *p++ = cpu_to_be32(255); |
1da177e4 LT |
2372 | } |
2373 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
ddd1ea56 BF |
2374 | p = xdr_reserve_space(xdr, 4); |
2375 | if (!p) | |
1da177e4 | 2376 | goto out_resource; |
c373b0a4 | 2377 | *p++ = cpu_to_be32(statfs.f_namelen); |
1da177e4 LT |
2378 | } |
2379 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
ddd1ea56 BF |
2380 | p = xdr_reserve_space(xdr, 8); |
2381 | if (!p) | |
1da177e4 | 2382 | goto out_resource; |
b64c7f3b | 2383 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2384 | } |
2385 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
ddd1ea56 BF |
2386 | p = xdr_reserve_space(xdr, 8); |
2387 | if (!p) | |
1da177e4 | 2388 | goto out_resource; |
b64c7f3b | 2389 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2390 | } |
2391 | if (bmval1 & FATTR4_WORD1_MODE) { | |
ddd1ea56 BF |
2392 | p = xdr_reserve_space(xdr, 4); |
2393 | if (!p) | |
1da177e4 | 2394 | goto out_resource; |
c373b0a4 | 2395 | *p++ = cpu_to_be32(stat.mode & S_IALLUGO); |
1da177e4 LT |
2396 | } |
2397 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
ddd1ea56 BF |
2398 | p = xdr_reserve_space(xdr, 4); |
2399 | if (!p) | |
1da177e4 | 2400 | goto out_resource; |
c373b0a4 | 2401 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
2402 | } |
2403 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
ddd1ea56 BF |
2404 | p = xdr_reserve_space(xdr, 4); |
2405 | if (!p) | |
1da177e4 | 2406 | goto out_resource; |
c373b0a4 | 2407 | *p++ = cpu_to_be32(stat.nlink); |
1da177e4 LT |
2408 | } |
2409 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
ddd1ea56 | 2410 | status = nfsd4_encode_user(xdr, rqstp, stat.uid); |
1da177e4 LT |
2411 | if (status) |
2412 | goto out; | |
2413 | } | |
2414 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
ddd1ea56 | 2415 | status = nfsd4_encode_group(xdr, rqstp, stat.gid); |
1da177e4 LT |
2416 | if (status) |
2417 | goto out; | |
2418 | } | |
2419 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
ddd1ea56 BF |
2420 | p = xdr_reserve_space(xdr, 8); |
2421 | if (!p) | |
1da177e4 | 2422 | goto out_resource; |
c373b0a4 BF |
2423 | *p++ = cpu_to_be32((u32) MAJOR(stat.rdev)); |
2424 | *p++ = cpu_to_be32((u32) MINOR(stat.rdev)); | |
1da177e4 LT |
2425 | } |
2426 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
ddd1ea56 BF |
2427 | p = xdr_reserve_space(xdr, 8); |
2428 | if (!p) | |
1da177e4 LT |
2429 | goto out_resource; |
2430 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
b64c7f3b | 2431 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2432 | } |
2433 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
ddd1ea56 BF |
2434 | p = xdr_reserve_space(xdr, 8); |
2435 | if (!p) | |
1da177e4 LT |
2436 | goto out_resource; |
2437 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
b64c7f3b | 2438 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2439 | } |
2440 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
ddd1ea56 BF |
2441 | p = xdr_reserve_space(xdr, 8); |
2442 | if (!p) | |
1da177e4 LT |
2443 | goto out_resource; |
2444 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
b64c7f3b | 2445 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2446 | } |
2447 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
ddd1ea56 BF |
2448 | p = xdr_reserve_space(xdr, 8); |
2449 | if (!p) | |
1da177e4 LT |
2450 | goto out_resource; |
2451 | dummy64 = (u64)stat.blocks << 9; | |
b64c7f3b | 2452 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
2453 | } |
2454 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
ddd1ea56 BF |
2455 | p = xdr_reserve_space(xdr, 12); |
2456 | if (!p) | |
1da177e4 | 2457 | goto out_resource; |
b64c7f3b | 2458 | p = xdr_encode_hyper(p, (s64)stat.atime.tv_sec); |
c373b0a4 | 2459 | *p++ = cpu_to_be32(stat.atime.tv_nsec); |
1da177e4 LT |
2460 | } |
2461 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
ddd1ea56 BF |
2462 | p = xdr_reserve_space(xdr, 12); |
2463 | if (!p) | |
1da177e4 | 2464 | goto out_resource; |
c373b0a4 BF |
2465 | *p++ = cpu_to_be32(0); |
2466 | *p++ = cpu_to_be32(1); | |
2467 | *p++ = cpu_to_be32(0); | |
1da177e4 LT |
2468 | } |
2469 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
ddd1ea56 BF |
2470 | p = xdr_reserve_space(xdr, 12); |
2471 | if (!p) | |
1da177e4 | 2472 | goto out_resource; |
b64c7f3b | 2473 | p = xdr_encode_hyper(p, (s64)stat.ctime.tv_sec); |
c373b0a4 | 2474 | *p++ = cpu_to_be32(stat.ctime.tv_nsec); |
1da177e4 LT |
2475 | } |
2476 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
ddd1ea56 BF |
2477 | p = xdr_reserve_space(xdr, 12); |
2478 | if (!p) | |
1da177e4 | 2479 | goto out_resource; |
b64c7f3b | 2480 | p = xdr_encode_hyper(p, (s64)stat.mtime.tv_sec); |
c373b0a4 | 2481 | *p++ = cpu_to_be32(stat.mtime.tv_nsec); |
1da177e4 LT |
2482 | } |
2483 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
ddd1ea56 BF |
2484 | p = xdr_reserve_space(xdr, 8); |
2485 | if (!p) | |
1da177e4 | 2486 | goto out_resource; |
406a7ea9 FF |
2487 | /* |
2488 | * Get parent's attributes if not ignoring crossmount | |
2489 | * and this is the root of a cross-mounted filesystem. | |
2490 | */ | |
2491 | if (ignore_crossmnt == 0 && | |
ae7095a7 BF |
2492 | dentry == exp->ex_path.mnt->mnt_root) |
2493 | get_parent_attributes(exp, &stat); | |
b64c7f3b | 2494 | p = xdr_encode_hyper(p, stat.ino); |
1da177e4 | 2495 | } |
18032ca0 | 2496 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { |
ddd1ea56 BF |
2497 | status = nfsd4_encode_security_label(xdr, rqstp, context, |
2498 | contextlen); | |
18032ca0 DQ |
2499 | if (status) |
2500 | goto out; | |
2501 | } | |
8c18f205 | 2502 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
ddd1ea56 BF |
2503 | p = xdr_reserve_space(xdr, 16); |
2504 | if (!p) | |
de3997a7 | 2505 | goto out_resource; |
c373b0a4 BF |
2506 | *p++ = cpu_to_be32(3); |
2507 | *p++ = cpu_to_be32(NFSD_SUPPATTR_EXCLCREAT_WORD0); | |
2508 | *p++ = cpu_to_be32(NFSD_SUPPATTR_EXCLCREAT_WORD1); | |
2509 | *p++ = cpu_to_be32(NFSD_SUPPATTR_EXCLCREAT_WORD2); | |
8c18f205 | 2510 | } |
7e705706 | 2511 | |
082d4bd7 BF |
2512 | attrlen = htonl(xdr->buf->len - attrlen_offset - 4); |
2513 | write_bytes_to_xdr_buf(xdr->buf, attrlen_offset, &attrlen, 4); | |
1da177e4 LT |
2514 | status = nfs_ok; |
2515 | ||
2516 | out: | |
ba4e55bb | 2517 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
18032ca0 DQ |
2518 | if (context) |
2519 | security_release_secctx(context, contextlen); | |
ba4e55bb | 2520 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ |
28e05dd8 | 2521 | kfree(acl); |
18df11d0 | 2522 | if (tempfh) { |
d50e6136 | 2523 | fh_put(tempfh); |
18df11d0 YZ |
2524 | kfree(tempfh); |
2525 | } | |
1fcea5b2 BF |
2526 | if (status) |
2527 | xdr_truncate_encode(xdr, starting_len); | |
1da177e4 LT |
2528 | return status; |
2529 | out_nfserr: | |
b8dd7b9a | 2530 | status = nfserrno(err); |
1da177e4 LT |
2531 | goto out; |
2532 | out_resource: | |
1da177e4 LT |
2533 | status = nfserr_resource; |
2534 | goto out; | |
1da177e4 LT |
2535 | } |
2536 | ||
2825a7f9 BF |
2537 | static void svcxdr_init_encode_from_buffer(struct xdr_stream *xdr, |
2538 | struct xdr_buf *buf, __be32 *p, int bytes) | |
2539 | { | |
2540 | xdr->scratch.iov_len = 0; | |
2541 | memset(buf, 0, sizeof(struct xdr_buf)); | |
2542 | buf->head[0].iov_base = p; | |
2543 | buf->head[0].iov_len = 0; | |
2544 | buf->len = 0; | |
2545 | xdr->buf = buf; | |
2546 | xdr->iov = buf->head; | |
2547 | xdr->p = p; | |
2548 | xdr->end = (void *)p + bytes; | |
2549 | buf->buflen = bytes; | |
2550 | } | |
2551 | ||
d5184658 BF |
2552 | __be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words, |
2553 | struct svc_fh *fhp, struct svc_export *exp, | |
2554 | struct dentry *dentry, u32 *bmval, | |
2555 | struct svc_rqst *rqstp, int ignore_crossmnt) | |
2556 | { | |
2825a7f9 | 2557 | struct xdr_buf dummy; |
d5184658 BF |
2558 | struct xdr_stream xdr; |
2559 | __be32 ret; | |
2560 | ||
2825a7f9 | 2561 | svcxdr_init_encode_from_buffer(&xdr, &dummy, *p, words << 2); |
d5184658 BF |
2562 | ret = nfsd4_encode_fattr(&xdr, fhp, exp, dentry, bmval, rqstp, |
2563 | ignore_crossmnt); | |
2564 | *p = xdr.p; | |
2565 | return ret; | |
2566 | } | |
2567 | ||
c0ce6ec8 BF |
2568 | static inline int attributes_need_mount(u32 *bmval) |
2569 | { | |
2570 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2571 | return 1; | |
2572 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2573 | return 1; | |
2574 | return 0; | |
2575 | } | |
2576 | ||
b37ad28b | 2577 | static __be32 |
561f0ed4 BF |
2578 | nfsd4_encode_dirent_fattr(struct xdr_stream *xdr, struct nfsd4_readdir *cd, |
2579 | const char *name, int namlen) | |
1da177e4 LT |
2580 | { |
2581 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2582 | struct dentry *dentry; | |
b37ad28b | 2583 | __be32 nfserr; |
406a7ea9 | 2584 | int ignore_crossmnt = 0; |
1da177e4 LT |
2585 | |
2586 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
2587 | if (IS_ERR(dentry)) | |
2588 | return nfserrno(PTR_ERR(dentry)); | |
b2c0cea6 BF |
2589 | if (!dentry->d_inode) { |
2590 | /* | |
2591 | * nfsd_buffered_readdir drops the i_mutex between | |
2592 | * readdir and calling this callback, leaving a window | |
2593 | * where this directory entry could have gone away. | |
2594 | */ | |
2595 | dput(dentry); | |
2596 | return nfserr_noent; | |
2597 | } | |
1da177e4 LT |
2598 | |
2599 | exp_get(exp); | |
406a7ea9 FF |
2600 | /* |
2601 | * In the case of a mountpoint, the client may be asking for | |
2602 | * attributes that are only properties of the underlying filesystem | |
2603 | * as opposed to the cross-mounted file system. In such a case, | |
2604 | * we will not follow the cross mount and will fill the attribtutes | |
2605 | * directly from the mountpoint dentry. | |
2606 | */ | |
3227fa41 | 2607 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
2608 | int err; |
2609 | ||
3227fa41 BF |
2610 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
2611 | && !attributes_need_mount(cd->rd_bmval)) { | |
2612 | ignore_crossmnt = 1; | |
2613 | goto out_encode; | |
2614 | } | |
dcb488a3 AA |
2615 | /* |
2616 | * Why the heck aren't we just using nfsd_lookup?? | |
2617 | * Different "."/".." handling? Something else? | |
2618 | * At least, add a comment here to explain.... | |
2619 | */ | |
021d3a72 BF |
2620 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
2621 | if (err) { | |
2622 | nfserr = nfserrno(err); | |
1da177e4 LT |
2623 | goto out_put; |
2624 | } | |
dcb488a3 AA |
2625 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
2626 | if (nfserr) | |
2627 | goto out_put; | |
1da177e4 LT |
2628 | |
2629 | } | |
3227fa41 | 2630 | out_encode: |
561f0ed4 | 2631 | nfserr = nfsd4_encode_fattr(xdr, NULL, exp, dentry, cd->rd_bmval, |
406a7ea9 | 2632 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
2633 | out_put: |
2634 | dput(dentry); | |
2635 | exp_put(exp); | |
2636 | return nfserr; | |
2637 | } | |
2638 | ||
2ebbc012 | 2639 | static __be32 * |
561f0ed4 | 2640 | nfsd4_encode_rdattr_error(struct xdr_stream *xdr, __be32 nfserr) |
1da177e4 | 2641 | { |
561f0ed4 BF |
2642 | __be32 *p; |
2643 | ||
2644 | p = xdr_reserve_space(xdr, 6); | |
2645 | if (!p) | |
1da177e4 LT |
2646 | return NULL; |
2647 | *p++ = htonl(2); | |
2648 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
2649 | *p++ = htonl(0); /* bmval1 */ | |
2650 | ||
87915c64 | 2651 | *p++ = htonl(4); /* attribute length */ |
1da177e4 | 2652 | *p++ = nfserr; /* no htonl */ |
1da177e4 LT |
2653 | return p; |
2654 | } | |
2655 | ||
2656 | static int | |
a0ad13ef N |
2657 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
2658 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 2659 | { |
a0ad13ef | 2660 | struct readdir_cd *ccd = ccdv; |
1da177e4 | 2661 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
561f0ed4 BF |
2662 | struct xdr_stream *xdr = cd->xdr; |
2663 | int start_offset = xdr->buf->len; | |
2664 | int cookie_offset; | |
2665 | int entry_bytes; | |
b37ad28b | 2666 | __be32 nfserr = nfserr_toosmall; |
561f0ed4 BF |
2667 | __be64 wire_offset; |
2668 | __be32 *p; | |
1da177e4 LT |
2669 | |
2670 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
2671 | if (name && isdotent(name, namlen)) { | |
2672 | cd->common.err = nfs_ok; | |
2673 | return 0; | |
2674 | } | |
2675 | ||
561f0ed4 BF |
2676 | if (cd->cookie_offset) { |
2677 | wire_offset = cpu_to_be64(offset); | |
2678 | write_bytes_to_xdr_buf(xdr->buf, cd->cookie_offset, | |
2679 | &wire_offset, 8); | |
2680 | } | |
1da177e4 | 2681 | |
561f0ed4 BF |
2682 | p = xdr_reserve_space(xdr, 4); |
2683 | if (!p) | |
1da177e4 | 2684 | goto fail; |
1da177e4 | 2685 | *p++ = xdr_one; /* mark entry present */ |
561f0ed4 BF |
2686 | cookie_offset = xdr->buf->len; |
2687 | p = xdr_reserve_space(xdr, 3*4 + namlen); | |
2688 | if (!p) | |
2689 | goto fail; | |
1da177e4 LT |
2690 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
2691 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
2692 | ||
561f0ed4 | 2693 | nfserr = nfsd4_encode_dirent_fattr(xdr, cd, name, namlen); |
1da177e4 LT |
2694 | switch (nfserr) { |
2695 | case nfs_ok: | |
1da177e4 LT |
2696 | break; |
2697 | case nfserr_resource: | |
2698 | nfserr = nfserr_toosmall; | |
2699 | goto fail; | |
b2c0cea6 | 2700 | case nfserr_noent: |
f41c5ad2 | 2701 | xdr_truncate_encode(xdr, start_offset); |
b2c0cea6 | 2702 | goto skip_entry; |
1da177e4 LT |
2703 | default: |
2704 | /* | |
2705 | * If the client requested the RDATTR_ERROR attribute, | |
2706 | * we stuff the error code into this attribute | |
2707 | * and continue. If this attribute was not requested, | |
2708 | * then in accordance with the spec, we fail the | |
2709 | * entire READDIR operation(!) | |
2710 | */ | |
2711 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
2712 | goto fail; | |
561f0ed4 | 2713 | p = nfsd4_encode_rdattr_error(xdr, nfserr); |
34081efc FI |
2714 | if (p == NULL) { |
2715 | nfserr = nfserr_toosmall; | |
1da177e4 | 2716 | goto fail; |
34081efc | 2717 | } |
1da177e4 | 2718 | } |
561f0ed4 BF |
2719 | nfserr = nfserr_toosmall; |
2720 | entry_bytes = xdr->buf->len - start_offset; | |
2721 | if (entry_bytes > cd->rd_maxcount) | |
2722 | goto fail; | |
2723 | cd->rd_maxcount -= entry_bytes; | |
3b299709 BF |
2724 | if (!cd->rd_dircount) |
2725 | goto fail; | |
2726 | cd->rd_dircount--; | |
561f0ed4 | 2727 | cd->cookie_offset = cookie_offset; |
b2c0cea6 | 2728 | skip_entry: |
1da177e4 LT |
2729 | cd->common.err = nfs_ok; |
2730 | return 0; | |
2731 | fail: | |
561f0ed4 | 2732 | xdr_truncate_encode(xdr, start_offset); |
1da177e4 LT |
2733 | cd->common.err = nfserr; |
2734 | return -EINVAL; | |
2735 | } | |
2736 | ||
d0a381dd BF |
2737 | static __be32 |
2738 | nfsd4_encode_stateid(struct xdr_stream *xdr, stateid_t *sid) | |
e2f282b9 | 2739 | { |
bc749ca4 | 2740 | __be32 *p; |
e2f282b9 | 2741 | |
d0a381dd BF |
2742 | p = xdr_reserve_space(xdr, sizeof(stateid_t)); |
2743 | if (!p) | |
2744 | return nfserr_resource; | |
c373b0a4 | 2745 | *p++ = cpu_to_be32(sid->si_generation); |
0c0c267b BF |
2746 | p = xdr_encode_opaque_fixed(p, &sid->si_opaque, |
2747 | sizeof(stateid_opaque_t)); | |
d0a381dd | 2748 | return 0; |
e2f282b9 BH |
2749 | } |
2750 | ||
695e12f8 | 2751 | static __be32 |
b37ad28b | 2752 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 2753 | { |
d0a381dd | 2754 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2755 | __be32 *p; |
1da177e4 LT |
2756 | |
2757 | if (!nfserr) { | |
d0a381dd BF |
2758 | p = xdr_reserve_space(xdr, 8); |
2759 | if (!p) | |
2760 | return nfserr_resource; | |
c373b0a4 BF |
2761 | *p++ = cpu_to_be32(access->ac_supported); |
2762 | *p++ = cpu_to_be32(access->ac_resp_access); | |
1da177e4 | 2763 | } |
695e12f8 | 2764 | return nfserr; |
1da177e4 LT |
2765 | } |
2766 | ||
1d1bc8f2 BF |
2767 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
2768 | { | |
d0a381dd | 2769 | struct xdr_stream *xdr = &resp->xdr; |
1d1bc8f2 BF |
2770 | __be32 *p; |
2771 | ||
2772 | if (!nfserr) { | |
d0a381dd BF |
2773 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 8); |
2774 | if (!p) | |
2775 | return nfserr_resource; | |
0c0c267b BF |
2776 | p = xdr_encode_opaque_fixed(p, bcts->sessionid.data, |
2777 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 | 2778 | *p++ = cpu_to_be32(bcts->dir); |
6e67b5d1 | 2779 | /* Sorry, we do not yet support RDMA over 4.1: */ |
c373b0a4 | 2780 | *p++ = cpu_to_be32(0); |
1d1bc8f2 BF |
2781 | } |
2782 | return nfserr; | |
2783 | } | |
2784 | ||
695e12f8 | 2785 | static __be32 |
b37ad28b | 2786 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 | 2787 | { |
d0a381dd BF |
2788 | struct xdr_stream *xdr = &resp->xdr; |
2789 | ||
e2f282b9 | 2790 | if (!nfserr) |
d0a381dd | 2791 | nfserr = nfsd4_encode_stateid(xdr, &close->cl_stateid); |
e2f282b9 | 2792 | |
695e12f8 | 2793 | return nfserr; |
1da177e4 LT |
2794 | } |
2795 | ||
2796 | ||
695e12f8 | 2797 | static __be32 |
b37ad28b | 2798 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 2799 | { |
d0a381dd | 2800 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2801 | __be32 *p; |
1da177e4 LT |
2802 | |
2803 | if (!nfserr) { | |
d0a381dd BF |
2804 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
2805 | if (!p) | |
2806 | return nfserr_resource; | |
0c0c267b BF |
2807 | p = xdr_encode_opaque_fixed(p, commit->co_verf.data, |
2808 | NFS4_VERIFIER_SIZE); | |
1da177e4 | 2809 | } |
695e12f8 | 2810 | return nfserr; |
1da177e4 LT |
2811 | } |
2812 | ||
695e12f8 | 2813 | static __be32 |
b37ad28b | 2814 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 2815 | { |
d0a381dd | 2816 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2817 | __be32 *p; |
1da177e4 LT |
2818 | |
2819 | if (!nfserr) { | |
d0a381dd BF |
2820 | p = xdr_reserve_space(xdr, 32); |
2821 | if (!p) | |
2822 | return nfserr_resource; | |
d05d5744 | 2823 | p = encode_cinfo(p, &create->cr_cinfo); |
c373b0a4 BF |
2824 | *p++ = cpu_to_be32(2); |
2825 | *p++ = cpu_to_be32(create->cr_bmval[0]); | |
2826 | *p++ = cpu_to_be32(create->cr_bmval[1]); | |
1da177e4 | 2827 | } |
695e12f8 | 2828 | return nfserr; |
1da177e4 LT |
2829 | } |
2830 | ||
b37ad28b AV |
2831 | static __be32 |
2832 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
2833 | { |
2834 | struct svc_fh *fhp = getattr->ga_fhp; | |
d5184658 | 2835 | struct xdr_stream *xdr = &resp->xdr; |
1da177e4 LT |
2836 | |
2837 | if (nfserr) | |
2838 | return nfserr; | |
2839 | ||
d5184658 BF |
2840 | nfserr = nfsd4_encode_fattr(xdr, fhp, fhp->fh_export, fhp->fh_dentry, |
2841 | getattr->ga_bmval, | |
406a7ea9 | 2842 | resp->rqstp, 0); |
1da177e4 LT |
2843 | return nfserr; |
2844 | } | |
2845 | ||
695e12f8 BH |
2846 | static __be32 |
2847 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 2848 | { |
d0a381dd | 2849 | struct xdr_stream *xdr = &resp->xdr; |
695e12f8 | 2850 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 2851 | unsigned int len; |
bc749ca4 | 2852 | __be32 *p; |
1da177e4 LT |
2853 | |
2854 | if (!nfserr) { | |
2855 | len = fhp->fh_handle.fh_size; | |
d0a381dd BF |
2856 | p = xdr_reserve_space(xdr, len + 4); |
2857 | if (!p) | |
2858 | return nfserr_resource; | |
0c0c267b | 2859 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, len); |
1da177e4 | 2860 | } |
695e12f8 | 2861 | return nfserr; |
1da177e4 LT |
2862 | } |
2863 | ||
2864 | /* | |
2865 | * Including all fields other than the name, a LOCK4denied structure requires | |
2866 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
2867 | */ | |
d0a381dd BF |
2868 | static __be32 |
2869 | nfsd4_encode_lock_denied(struct xdr_stream *xdr, struct nfsd4_lock_denied *ld) | |
1da177e4 | 2870 | { |
7c13f344 | 2871 | struct xdr_netobj *conf = &ld->ld_owner; |
bc749ca4 | 2872 | __be32 *p; |
1da177e4 | 2873 | |
8c7424cf | 2874 | again: |
d0a381dd | 2875 | p = xdr_reserve_space(xdr, 32 + XDR_LEN(conf->len)); |
8c7424cf BF |
2876 | if (!p) { |
2877 | /* | |
2878 | * Don't fail to return the result just because we can't | |
2879 | * return the conflicting open: | |
2880 | */ | |
2881 | if (conf->len) { | |
2882 | conf->len = 0; | |
2883 | conf->data = NULL; | |
2884 | goto again; | |
2885 | } | |
d0a381dd | 2886 | return nfserr_resource; |
8c7424cf | 2887 | } |
b64c7f3b BF |
2888 | p = xdr_encode_hyper(p, ld->ld_start); |
2889 | p = xdr_encode_hyper(p, ld->ld_length); | |
c373b0a4 | 2890 | *p++ = cpu_to_be32(ld->ld_type); |
7c13f344 | 2891 | if (conf->len) { |
0c0c267b BF |
2892 | p = xdr_encode_opaque_fixed(p, &ld->ld_clientid, 8); |
2893 | p = xdr_encode_opaque(p, conf->data, conf->len); | |
1da177e4 | 2894 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
b64c7f3b | 2895 | p = xdr_encode_hyper(p, (u64)0); /* clientid */ |
c373b0a4 | 2896 | *p++ = cpu_to_be32(0); /* length of owner name */ |
1da177e4 | 2897 | } |
d0a381dd | 2898 | return nfserr_denied; |
1da177e4 LT |
2899 | } |
2900 | ||
695e12f8 | 2901 | static __be32 |
b37ad28b | 2902 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 2903 | { |
d0a381dd BF |
2904 | struct xdr_stream *xdr = &resp->xdr; |
2905 | ||
e2f282b9 | 2906 | if (!nfserr) |
d0a381dd | 2907 | nfserr = nfsd4_encode_stateid(xdr, &lock->lk_resp_stateid); |
e2f282b9 | 2908 | else if (nfserr == nfserr_denied) |
d0a381dd | 2909 | nfserr = nfsd4_encode_lock_denied(xdr, &lock->lk_denied); |
8c7424cf | 2910 | kfree(lock->lk_denied.ld_owner.data); |
695e12f8 | 2911 | return nfserr; |
1da177e4 LT |
2912 | } |
2913 | ||
695e12f8 | 2914 | static __be32 |
b37ad28b | 2915 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 | 2916 | { |
d0a381dd BF |
2917 | struct xdr_stream *xdr = &resp->xdr; |
2918 | ||
1da177e4 | 2919 | if (nfserr == nfserr_denied) |
d0a381dd | 2920 | nfsd4_encode_lock_denied(xdr, &lockt->lt_denied); |
695e12f8 | 2921 | return nfserr; |
1da177e4 LT |
2922 | } |
2923 | ||
695e12f8 | 2924 | static __be32 |
b37ad28b | 2925 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 | 2926 | { |
d0a381dd BF |
2927 | struct xdr_stream *xdr = &resp->xdr; |
2928 | ||
e2f282b9 | 2929 | if (!nfserr) |
d0a381dd | 2930 | nfserr = nfsd4_encode_stateid(xdr, &locku->lu_stateid); |
e2f282b9 | 2931 | |
695e12f8 | 2932 | return nfserr; |
1da177e4 LT |
2933 | } |
2934 | ||
2935 | ||
695e12f8 | 2936 | static __be32 |
b37ad28b | 2937 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 2938 | { |
d0a381dd | 2939 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2940 | __be32 *p; |
1da177e4 LT |
2941 | |
2942 | if (!nfserr) { | |
d0a381dd BF |
2943 | p = xdr_reserve_space(xdr, 20); |
2944 | if (!p) | |
2945 | return nfserr_resource; | |
d05d5744 | 2946 | p = encode_cinfo(p, &link->li_cinfo); |
1da177e4 | 2947 | } |
695e12f8 | 2948 | return nfserr; |
1da177e4 LT |
2949 | } |
2950 | ||
2951 | ||
695e12f8 | 2952 | static __be32 |
b37ad28b | 2953 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 2954 | { |
d0a381dd | 2955 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 2956 | __be32 *p; |
1da177e4 LT |
2957 | |
2958 | if (nfserr) | |
2959 | goto out; | |
2960 | ||
d0a381dd BF |
2961 | nfserr = nfsd4_encode_stateid(xdr, &open->op_stateid); |
2962 | if (nfserr) | |
2963 | goto out; | |
2964 | p = xdr_reserve_space(xdr, 40); | |
2965 | if (!p) | |
2966 | return nfserr_resource; | |
d05d5744 | 2967 | p = encode_cinfo(p, &open->op_cinfo); |
c373b0a4 BF |
2968 | *p++ = cpu_to_be32(open->op_rflags); |
2969 | *p++ = cpu_to_be32(2); | |
2970 | *p++ = cpu_to_be32(open->op_bmval[0]); | |
2971 | *p++ = cpu_to_be32(open->op_bmval[1]); | |
2972 | *p++ = cpu_to_be32(open->op_delegate_type); | |
1da177e4 LT |
2973 | |
2974 | switch (open->op_delegate_type) { | |
2975 | case NFS4_OPEN_DELEGATE_NONE: | |
2976 | break; | |
2977 | case NFS4_OPEN_DELEGATE_READ: | |
d0a381dd BF |
2978 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
2979 | if (nfserr) | |
2980 | return nfserr; | |
2981 | p = xdr_reserve_space(xdr, 20); | |
2982 | if (!p) | |
2983 | return nfserr_resource; | |
c373b0a4 | 2984 | *p++ = cpu_to_be32(open->op_recall); |
1da177e4 LT |
2985 | |
2986 | /* | |
2987 | * TODO: ACE's in delegations | |
2988 | */ | |
c373b0a4 BF |
2989 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
2990 | *p++ = cpu_to_be32(0); | |
2991 | *p++ = cpu_to_be32(0); | |
2992 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 LT |
2993 | break; |
2994 | case NFS4_OPEN_DELEGATE_WRITE: | |
d0a381dd BF |
2995 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
2996 | if (nfserr) | |
2997 | return nfserr; | |
2998 | p = xdr_reserve_space(xdr, 32); | |
2999 | if (!p) | |
3000 | return nfserr_resource; | |
c373b0a4 | 3001 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
3002 | |
3003 | /* | |
3004 | * TODO: space_limit's in delegations | |
3005 | */ | |
c373b0a4 BF |
3006 | *p++ = cpu_to_be32(NFS4_LIMIT_SIZE); |
3007 | *p++ = cpu_to_be32(~(u32)0); | |
3008 | *p++ = cpu_to_be32(~(u32)0); | |
1da177e4 LT |
3009 | |
3010 | /* | |
3011 | * TODO: ACE's in delegations | |
3012 | */ | |
c373b0a4 BF |
3013 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
3014 | *p++ = cpu_to_be32(0); | |
3015 | *p++ = cpu_to_be32(0); | |
3016 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 | 3017 | break; |
d24433cd BH |
3018 | case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */ |
3019 | switch (open->op_why_no_deleg) { | |
3020 | case WND4_CONTENTION: | |
3021 | case WND4_RESOURCE: | |
d0a381dd BF |
3022 | p = xdr_reserve_space(xdr, 8); |
3023 | if (!p) | |
3024 | return nfserr_resource; | |
c373b0a4 BF |
3025 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
3026 | /* deleg signaling not supported yet: */ | |
3027 | *p++ = cpu_to_be32(0); | |
d24433cd BH |
3028 | break; |
3029 | default: | |
d0a381dd BF |
3030 | p = xdr_reserve_space(xdr, 4); |
3031 | if (!p) | |
3032 | return nfserr_resource; | |
c373b0a4 | 3033 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
d24433cd | 3034 | } |
d24433cd | 3035 | break; |
1da177e4 LT |
3036 | default: |
3037 | BUG(); | |
3038 | } | |
3039 | /* XXX save filehandle here */ | |
3040 | out: | |
695e12f8 | 3041 | return nfserr; |
1da177e4 LT |
3042 | } |
3043 | ||
695e12f8 | 3044 | static __be32 |
b37ad28b | 3045 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 | 3046 | { |
d0a381dd BF |
3047 | struct xdr_stream *xdr = &resp->xdr; |
3048 | ||
e2f282b9 | 3049 | if (!nfserr) |
d0a381dd | 3050 | nfserr = nfsd4_encode_stateid(xdr, &oc->oc_resp_stateid); |
1da177e4 | 3051 | |
695e12f8 | 3052 | return nfserr; |
1da177e4 LT |
3053 | } |
3054 | ||
695e12f8 | 3055 | static __be32 |
b37ad28b | 3056 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 | 3057 | { |
d0a381dd BF |
3058 | struct xdr_stream *xdr = &resp->xdr; |
3059 | ||
e2f282b9 | 3060 | if (!nfserr) |
d0a381dd | 3061 | nfserr = nfsd4_encode_stateid(xdr, &od->od_stateid); |
1da177e4 | 3062 | |
695e12f8 | 3063 | return nfserr; |
1da177e4 LT |
3064 | } |
3065 | ||
dc97618d BF |
3066 | static __be32 nfsd4_encode_splice_read( |
3067 | struct nfsd4_compoundres *resp, | |
3068 | struct nfsd4_read *read, | |
3069 | struct file *file, unsigned long maxcount) | |
1da177e4 | 3070 | { |
ddd1ea56 | 3071 | struct xdr_stream *xdr = &resp->xdr; |
34a78b48 | 3072 | struct xdr_buf *buf = xdr->buf; |
dc97618d | 3073 | u32 eof; |
30596768 | 3074 | int space_left; |
dc97618d | 3075 | __be32 nfserr; |
fec25fa4 | 3076 | __be32 *p = xdr->p - 2; |
1da177e4 | 3077 | |
dc97618d BF |
3078 | /* |
3079 | * Don't inline pages unless we know there's room for eof, | |
3080 | * count, and possible padding: | |
3081 | */ | |
3082 | if (xdr->end - xdr->p < 3) | |
d0a381dd | 3083 | return nfserr_resource; |
dc97618d BF |
3084 | |
3085 | nfserr = nfsd_splice_read(read->rd_rqstp, file, | |
3086 | read->rd_offset, &maxcount); | |
3087 | if (nfserr) { | |
3088 | /* | |
3089 | * nfsd_splice_actor may have already messed with the | |
3090 | * page length; reset it so as not to confuse | |
3091 | * xdr_truncate_encode: | |
3092 | */ | |
34a78b48 | 3093 | buf->page_len = 0; |
dc97618d | 3094 | return nfserr; |
b0e35fda | 3095 | } |
1da177e4 | 3096 | |
dc97618d BF |
3097 | eof = (read->rd_offset + maxcount >= |
3098 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
4e21ac4b | 3099 | |
fec25fa4 BF |
3100 | *(p++) = htonl(eof); |
3101 | *(p++) = htonl(maxcount); | |
dc97618d | 3102 | |
34a78b48 BF |
3103 | buf->page_len = maxcount; |
3104 | buf->len += maxcount; | |
dc97618d | 3105 | xdr->page_ptr += (maxcount + PAGE_SIZE - 1) / PAGE_SIZE; |
dc97618d BF |
3106 | |
3107 | /* Use rest of head for padding and remaining ops: */ | |
34a78b48 BF |
3108 | buf->tail[0].iov_base = xdr->p; |
3109 | buf->tail[0].iov_len = 0; | |
fec25fa4 | 3110 | xdr->iov = buf->tail; |
dc97618d | 3111 | if (maxcount&3) { |
fec25fa4 BF |
3112 | int pad = 4 - (maxcount&3); |
3113 | ||
3114 | *(xdr->p++) = 0; | |
3115 | ||
34a78b48 | 3116 | buf->tail[0].iov_base += maxcount&3; |
fec25fa4 BF |
3117 | buf->tail[0].iov_len = pad; |
3118 | buf->len += pad; | |
b0e35fda | 3119 | } |
2825a7f9 | 3120 | |
dc97618d | 3121 | space_left = min_t(int, (void *)xdr->end - (void *)xdr->p, |
34a78b48 BF |
3122 | buf->buflen - buf->len); |
3123 | buf->buflen = buf->len + space_left; | |
dc97618d BF |
3124 | xdr->end = (__be32 *)((void *)xdr->end + space_left); |
3125 | ||
3126 | return 0; | |
3127 | } | |
3128 | ||
3129 | static __be32 nfsd4_encode_readv(struct nfsd4_compoundres *resp, | |
3130 | struct nfsd4_read *read, | |
3131 | struct file *file, unsigned long maxcount) | |
3132 | { | |
3133 | struct xdr_stream *xdr = &resp->xdr; | |
3134 | u32 eof; | |
3135 | int v; | |
dc97618d | 3136 | int starting_len = xdr->buf->len - 8; |
dc97618d | 3137 | long len; |
b0420980 | 3138 | int thislen; |
dc97618d BF |
3139 | __be32 nfserr; |
3140 | __be32 tmp; | |
3141 | __be32 *p; | |
b0420980 BF |
3142 | u32 zzz = 0; |
3143 | int pad; | |
1da177e4 LT |
3144 | |
3145 | len = maxcount; | |
3146 | v = 0; | |
6ff9897d | 3147 | |
b0420980 BF |
3148 | thislen = (void *)xdr->end - (void *)xdr->p; |
3149 | if (len < thislen) | |
3150 | thislen = len; | |
3151 | p = xdr_reserve_space(xdr, (thislen+3)&~3); | |
3152 | WARN_ON_ONCE(!p); | |
3153 | resp->rqstp->rq_vec[v].iov_base = p; | |
3154 | resp->rqstp->rq_vec[v].iov_len = thislen; | |
3155 | v++; | |
3156 | len -= thislen; | |
3157 | ||
3158 | while (len) { | |
6ff9897d | 3159 | thislen = min_t(long, len, PAGE_SIZE); |
b0420980 BF |
3160 | p = xdr_reserve_space(xdr, (thislen+3)&~3); |
3161 | WARN_ON_ONCE(!p); | |
3162 | resp->rqstp->rq_vec[v].iov_base = p; | |
6ff9897d | 3163 | resp->rqstp->rq_vec[v].iov_len = thislen; |
1da177e4 | 3164 | v++; |
6ff9897d | 3165 | len -= thislen; |
1da177e4 LT |
3166 | } |
3167 | read->rd_vlen = v; | |
3168 | ||
dc97618d BF |
3169 | nfserr = nfsd_readv(file, read->rd_offset, resp->rqstp->rq_vec, |
3170 | read->rd_vlen, &maxcount); | |
3171 | if (nfserr) | |
1da177e4 | 3172 | return nfserr; |
b0420980 | 3173 | xdr_truncate_encode(xdr, starting_len + 8 + ((maxcount+3)&~3)); |
dc97618d | 3174 | |
44524359 N |
3175 | eof = (read->rd_offset + maxcount >= |
3176 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 | 3177 | |
dc97618d BF |
3178 | tmp = htonl(eof); |
3179 | write_bytes_to_xdr_buf(xdr->buf, starting_len , &tmp, 4); | |
3180 | tmp = htonl(maxcount); | |
3181 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 4, &tmp, 4); | |
3182 | ||
b0420980 BF |
3183 | pad = (maxcount&3) ? 4 - (maxcount&3) : 0; |
3184 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 8 + maxcount, | |
3185 | &zzz, pad); | |
1da177e4 | 3186 | return 0; |
dc97618d BF |
3187 | |
3188 | } | |
3189 | ||
3190 | static __be32 | |
3191 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3192 | struct nfsd4_read *read) | |
3193 | { | |
3194 | unsigned long maxcount; | |
3195 | struct xdr_stream *xdr = &resp->xdr; | |
3196 | struct file *file = read->rd_filp; | |
3197 | int starting_len = xdr->buf->len; | |
3198 | struct raparms *ra; | |
3199 | __be32 *p; | |
3200 | __be32 err; | |
3201 | ||
3202 | if (nfserr) | |
3203 | return nfserr; | |
3204 | ||
3205 | p = xdr_reserve_space(xdr, 8); /* eof flag and byte count */ | |
3206 | if (!p) { | |
3207 | WARN_ON_ONCE(resp->rqstp->rq_splice_ok); | |
3208 | return nfserr_resource; | |
3209 | } | |
b0420980 BF |
3210 | if (resp->xdr.buf->page_len && resp->rqstp->rq_splice_ok) { |
3211 | WARN_ON_ONCE(1); | |
dc97618d BF |
3212 | return nfserr_resource; |
3213 | } | |
dc97618d BF |
3214 | xdr_commit_encode(xdr); |
3215 | ||
3216 | maxcount = svc_max_payload(resp->rqstp); | |
b0420980 BF |
3217 | if (maxcount > xdr->buf->buflen - xdr->buf->len) |
3218 | maxcount = xdr->buf->buflen - xdr->buf->len; | |
dc97618d BF |
3219 | if (maxcount > read->rd_length) |
3220 | maxcount = read->rd_length; | |
3221 | ||
3222 | if (!read->rd_filp) { | |
3223 | err = nfsd_get_tmp_read_open(resp->rqstp, read->rd_fhp, | |
3224 | &file, &ra); | |
3225 | if (err) | |
3226 | goto err_truncate; | |
3227 | } | |
3228 | ||
3229 | if (file->f_op->splice_read && resp->rqstp->rq_splice_ok) | |
3230 | err = nfsd4_encode_splice_read(resp, read, file, maxcount); | |
3231 | else | |
3232 | err = nfsd4_encode_readv(resp, read, file, maxcount); | |
3233 | ||
3234 | if (!read->rd_filp) | |
3235 | nfsd_put_tmp_read_open(file, ra); | |
3236 | ||
3237 | err_truncate: | |
3238 | if (err) | |
3239 | xdr_truncate_encode(xdr, starting_len); | |
3240 | return err; | |
1da177e4 LT |
3241 | } |
3242 | ||
b37ad28b AV |
3243 | static __be32 |
3244 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
3245 | { |
3246 | int maxcount; | |
476a7b1f BF |
3247 | __be32 wire_count; |
3248 | int zero = 0; | |
ddd1ea56 | 3249 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3250 | int length_offset = xdr->buf->len; |
bc749ca4 | 3251 | __be32 *p; |
1da177e4 LT |
3252 | |
3253 | if (nfserr) | |
3254 | return nfserr; | |
2825a7f9 BF |
3255 | |
3256 | p = xdr_reserve_space(xdr, 4); | |
3257 | if (!p) | |
3258 | return nfserr_resource; | |
1da177e4 | 3259 | maxcount = PAGE_SIZE; |
d0a381dd | 3260 | |
476a7b1f BF |
3261 | p = xdr_reserve_space(xdr, maxcount); |
3262 | if (!p) | |
4e21ac4b | 3263 | return nfserr_resource; |
1da177e4 LT |
3264 | /* |
3265 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
3266 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
3267 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
3268 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
3269 | */ | |
476a7b1f BF |
3270 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, |
3271 | (char *)p, &maxcount); | |
1da177e4 | 3272 | if (nfserr == nfserr_isdir) |
d3f627c8 BF |
3273 | nfserr = nfserr_inval; |
3274 | if (nfserr) { | |
1fcea5b2 | 3275 | xdr_truncate_encode(xdr, length_offset); |
1da177e4 | 3276 | return nfserr; |
d3f627c8 | 3277 | } |
1da177e4 | 3278 | |
476a7b1f BF |
3279 | wire_count = htonl(maxcount); |
3280 | write_bytes_to_xdr_buf(xdr->buf, length_offset, &wire_count, 4); | |
3281 | xdr_truncate_encode(xdr, length_offset + 4 + maxcount); | |
3282 | if (maxcount & 3) | |
3283 | write_bytes_to_xdr_buf(xdr->buf, length_offset + 4 + maxcount, | |
3284 | &zero, 4 - (maxcount&3)); | |
1da177e4 LT |
3285 | return 0; |
3286 | } | |
3287 | ||
b37ad28b AV |
3288 | static __be32 |
3289 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
3290 | { |
3291 | int maxcount; | |
561f0ed4 | 3292 | int bytes_left; |
1da177e4 | 3293 | loff_t offset; |
561f0ed4 | 3294 | __be64 wire_offset; |
ddd1ea56 | 3295 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 3296 | int starting_len = xdr->buf->len; |
bc749ca4 | 3297 | __be32 *p; |
1da177e4 LT |
3298 | |
3299 | if (nfserr) | |
3300 | return nfserr; | |
1da177e4 | 3301 | |
d0a381dd BF |
3302 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
3303 | if (!p) | |
3304 | return nfserr_resource; | |
1da177e4 LT |
3305 | |
3306 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
c373b0a4 BF |
3307 | *p++ = cpu_to_be32(0); |
3308 | *p++ = cpu_to_be32(0); | |
4aea24b2 BF |
3309 | resp->xdr.buf->head[0].iov_len = ((char *)resp->xdr.p) |
3310 | - (char *)resp->xdr.buf->head[0].iov_base; | |
1da177e4 LT |
3311 | |
3312 | /* | |
561f0ed4 BF |
3313 | * Number of bytes left for directory entries allowing for the |
3314 | * final 8 bytes of the readdir and a following failed op: | |
3315 | */ | |
3316 | bytes_left = xdr->buf->buflen - xdr->buf->len | |
3317 | - COMPOUND_ERR_SLACK_SPACE - 8; | |
3318 | if (bytes_left < 0) { | |
3319 | nfserr = nfserr_resource; | |
3320 | goto err_no_verf; | |
3321 | } | |
3322 | maxcount = min_t(u32, readdir->rd_maxcount, INT_MAX); | |
3323 | /* | |
3324 | * Note the rfc defines rd_maxcount as the size of the | |
3325 | * READDIR4resok structure, which includes the verifier above | |
3326 | * and the 8 bytes encoded at the end of this function: | |
1da177e4 | 3327 | */ |
561f0ed4 BF |
3328 | if (maxcount < 16) { |
3329 | nfserr = nfserr_toosmall; | |
1da177e4 LT |
3330 | goto err_no_verf; |
3331 | } | |
561f0ed4 | 3332 | maxcount = min_t(int, maxcount-16, bytes_left); |
1da177e4 | 3333 | |
561f0ed4 BF |
3334 | readdir->xdr = xdr; |
3335 | readdir->rd_maxcount = maxcount; | |
1da177e4 | 3336 | readdir->common.err = 0; |
561f0ed4 | 3337 | readdir->cookie_offset = 0; |
1da177e4 LT |
3338 | |
3339 | offset = readdir->rd_cookie; | |
3340 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
3341 | &offset, | |
3342 | &readdir->common, nfsd4_encode_dirent); | |
3343 | if (nfserr == nfs_ok && | |
3344 | readdir->common.err == nfserr_toosmall && | |
561f0ed4 BF |
3345 | xdr->buf->len == starting_len + 8) { |
3346 | /* nothing encoded; which limit did we hit?: */ | |
3347 | if (maxcount - 16 < bytes_left) | |
3348 | /* It was the fault of rd_maxcount: */ | |
3349 | nfserr = nfserr_toosmall; | |
3350 | else | |
3351 | /* We ran out of buffer space: */ | |
3352 | nfserr = nfserr_resource; | |
3353 | } | |
1da177e4 LT |
3354 | if (nfserr) |
3355 | goto err_no_verf; | |
3356 | ||
561f0ed4 BF |
3357 | if (readdir->cookie_offset) { |
3358 | wire_offset = cpu_to_be64(offset); | |
3359 | write_bytes_to_xdr_buf(xdr->buf, readdir->cookie_offset, | |
3360 | &wire_offset, 8); | |
3361 | } | |
1da177e4 | 3362 | |
561f0ed4 BF |
3363 | p = xdr_reserve_space(xdr, 8); |
3364 | if (!p) { | |
3365 | WARN_ON_ONCE(1); | |
3366 | goto err_no_verf; | |
3367 | } | |
1da177e4 LT |
3368 | *p++ = 0; /* no more entries */ |
3369 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
1da177e4 LT |
3370 | |
3371 | return 0; | |
3372 | err_no_verf: | |
1fcea5b2 | 3373 | xdr_truncate_encode(xdr, starting_len); |
1da177e4 LT |
3374 | return nfserr; |
3375 | } | |
3376 | ||
695e12f8 | 3377 | static __be32 |
b37ad28b | 3378 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 3379 | { |
d0a381dd | 3380 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3381 | __be32 *p; |
1da177e4 LT |
3382 | |
3383 | if (!nfserr) { | |
d0a381dd BF |
3384 | p = xdr_reserve_space(xdr, 20); |
3385 | if (!p) | |
3386 | return nfserr_resource; | |
d05d5744 | 3387 | p = encode_cinfo(p, &remove->rm_cinfo); |
1da177e4 | 3388 | } |
695e12f8 | 3389 | return nfserr; |
1da177e4 LT |
3390 | } |
3391 | ||
695e12f8 | 3392 | static __be32 |
b37ad28b | 3393 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 3394 | { |
d0a381dd | 3395 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3396 | __be32 *p; |
1da177e4 LT |
3397 | |
3398 | if (!nfserr) { | |
d0a381dd BF |
3399 | p = xdr_reserve_space(xdr, 40); |
3400 | if (!p) | |
3401 | return nfserr_resource; | |
d05d5744 BF |
3402 | p = encode_cinfo(p, &rename->rn_sinfo); |
3403 | p = encode_cinfo(p, &rename->rn_tinfo); | |
1da177e4 | 3404 | } |
695e12f8 | 3405 | return nfserr; |
1da177e4 LT |
3406 | } |
3407 | ||
695e12f8 | 3408 | static __be32 |
d0a381dd | 3409 | nfsd4_do_encode_secinfo(struct xdr_stream *xdr, |
a77c806f | 3410 | __be32 nfserr, struct svc_export *exp) |
dcb488a3 | 3411 | { |
676e4ebd | 3412 | u32 i, nflavs, supported; |
4796f457 BF |
3413 | struct exp_flavor_info *flavs; |
3414 | struct exp_flavor_info def_flavs[2]; | |
676e4ebd CL |
3415 | __be32 *p, *flavorsp; |
3416 | static bool report = true; | |
dcb488a3 AA |
3417 | |
3418 | if (nfserr) | |
3419 | goto out; | |
d0a381dd | 3420 | nfserr = nfserr_resource; |
4796f457 BF |
3421 | if (exp->ex_nflavors) { |
3422 | flavs = exp->ex_flavors; | |
3423 | nflavs = exp->ex_nflavors; | |
3424 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
3425 | flavs = def_flavs; | |
3426 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
3427 | nflavs = 2; | |
3428 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
3429 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
3430 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
3431 | nflavs = 1; | |
3432 | flavs[0].pseudoflavor | |
3433 | = svcauth_gss_flavor(exp->ex_client); | |
3434 | } else { | |
3435 | nflavs = 1; | |
3436 | flavs[0].pseudoflavor | |
3437 | = exp->ex_client->flavour->flavour; | |
3438 | } | |
3439 | } | |
3440 | ||
676e4ebd | 3441 | supported = 0; |
d0a381dd BF |
3442 | p = xdr_reserve_space(xdr, 4); |
3443 | if (!p) | |
3444 | goto out; | |
676e4ebd | 3445 | flavorsp = p++; /* to be backfilled later */ |
676e4ebd | 3446 | |
4796f457 | 3447 | for (i = 0; i < nflavs; i++) { |
676e4ebd | 3448 | rpc_authflavor_t pf = flavs[i].pseudoflavor; |
a77c806f | 3449 | struct rpcsec_gss_info info; |
dcb488a3 | 3450 | |
676e4ebd CL |
3451 | if (rpcauth_get_gssinfo(pf, &info) == 0) { |
3452 | supported++; | |
d0a381dd BF |
3453 | p = xdr_reserve_space(xdr, 4 + 4 + |
3454 | XDR_LEN(info.oid.len) + 4 + 4); | |
3455 | if (!p) | |
3456 | goto out; | |
c373b0a4 | 3457 | *p++ = cpu_to_be32(RPC_AUTH_GSS); |
0c0c267b | 3458 | p = xdr_encode_opaque(p, info.oid.data, info.oid.len); |
c373b0a4 BF |
3459 | *p++ = cpu_to_be32(info.qop); |
3460 | *p++ = cpu_to_be32(info.service); | |
676e4ebd CL |
3461 | } else if (pf < RPC_AUTH_MAXFLAVOR) { |
3462 | supported++; | |
d0a381dd BF |
3463 | p = xdr_reserve_space(xdr, 4); |
3464 | if (!p) | |
3465 | goto out; | |
c373b0a4 | 3466 | *p++ = cpu_to_be32(pf); |
676e4ebd CL |
3467 | } else { |
3468 | if (report) | |
3469 | pr_warn("NFS: SECINFO: security flavor %u " | |
3470 | "is not supported\n", pf); | |
dcb488a3 AA |
3471 | } |
3472 | } | |
a77c806f | 3473 | |
676e4ebd CL |
3474 | if (nflavs != supported) |
3475 | report = false; | |
3476 | *flavorsp = htonl(supported); | |
d0a381dd | 3477 | nfserr = 0; |
dcb488a3 AA |
3478 | out: |
3479 | if (exp) | |
3480 | exp_put(exp); | |
695e12f8 | 3481 | return nfserr; |
dcb488a3 AA |
3482 | } |
3483 | ||
22b6dee8 MJ |
3484 | static __be32 |
3485 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3486 | struct nfsd4_secinfo *secinfo) | |
3487 | { | |
d0a381dd BF |
3488 | struct xdr_stream *xdr = &resp->xdr; |
3489 | ||
3490 | return nfsd4_do_encode_secinfo(xdr, nfserr, secinfo->si_exp); | |
22b6dee8 MJ |
3491 | } |
3492 | ||
3493 | static __be32 | |
3494 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3495 | struct nfsd4_secinfo_no_name *secinfo) | |
3496 | { | |
d0a381dd BF |
3497 | struct xdr_stream *xdr = &resp->xdr; |
3498 | ||
3499 | return nfsd4_do_encode_secinfo(xdr, nfserr, secinfo->sin_exp); | |
22b6dee8 MJ |
3500 | } |
3501 | ||
1da177e4 LT |
3502 | /* |
3503 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
3504 | * regardless of the error status. | |
3505 | */ | |
695e12f8 | 3506 | static __be32 |
b37ad28b | 3507 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 3508 | { |
d0a381dd | 3509 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3510 | __be32 *p; |
1da177e4 | 3511 | |
d0a381dd BF |
3512 | p = xdr_reserve_space(xdr, 16); |
3513 | if (!p) | |
3514 | return nfserr_resource; | |
1da177e4 | 3515 | if (nfserr) { |
c373b0a4 BF |
3516 | *p++ = cpu_to_be32(3); |
3517 | *p++ = cpu_to_be32(0); | |
3518 | *p++ = cpu_to_be32(0); | |
3519 | *p++ = cpu_to_be32(0); | |
1da177e4 LT |
3520 | } |
3521 | else { | |
c373b0a4 BF |
3522 | *p++ = cpu_to_be32(3); |
3523 | *p++ = cpu_to_be32(setattr->sa_bmval[0]); | |
3524 | *p++ = cpu_to_be32(setattr->sa_bmval[1]); | |
3525 | *p++ = cpu_to_be32(setattr->sa_bmval[2]); | |
1da177e4 | 3526 | } |
695e12f8 | 3527 | return nfserr; |
1da177e4 LT |
3528 | } |
3529 | ||
695e12f8 | 3530 | static __be32 |
b37ad28b | 3531 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 3532 | { |
d0a381dd | 3533 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3534 | __be32 *p; |
1da177e4 LT |
3535 | |
3536 | if (!nfserr) { | |
d0a381dd BF |
3537 | p = xdr_reserve_space(xdr, 8 + NFS4_VERIFIER_SIZE); |
3538 | if (!p) | |
3539 | return nfserr_resource; | |
0c0c267b BF |
3540 | p = xdr_encode_opaque_fixed(p, &scd->se_clientid, 8); |
3541 | p = xdr_encode_opaque_fixed(p, &scd->se_confirm, | |
3542 | NFS4_VERIFIER_SIZE); | |
1da177e4 LT |
3543 | } |
3544 | else if (nfserr == nfserr_clid_inuse) { | |
d0a381dd BF |
3545 | p = xdr_reserve_space(xdr, 8); |
3546 | if (!p) | |
3547 | return nfserr_resource; | |
c373b0a4 BF |
3548 | *p++ = cpu_to_be32(0); |
3549 | *p++ = cpu_to_be32(0); | |
1da177e4 | 3550 | } |
695e12f8 | 3551 | return nfserr; |
1da177e4 LT |
3552 | } |
3553 | ||
695e12f8 | 3554 | static __be32 |
b37ad28b | 3555 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 3556 | { |
d0a381dd | 3557 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3558 | __be32 *p; |
1da177e4 LT |
3559 | |
3560 | if (!nfserr) { | |
d0a381dd BF |
3561 | p = xdr_reserve_space(xdr, 16); |
3562 | if (!p) | |
3563 | return nfserr_resource; | |
c373b0a4 BF |
3564 | *p++ = cpu_to_be32(write->wr_bytes_written); |
3565 | *p++ = cpu_to_be32(write->wr_how_written); | |
0c0c267b BF |
3566 | p = xdr_encode_opaque_fixed(p, write->wr_verifier.data, |
3567 | NFS4_VERIFIER_SIZE); | |
1da177e4 | 3568 | } |
695e12f8 | 3569 | return nfserr; |
1da177e4 LT |
3570 | } |
3571 | ||
57266a6e BF |
3572 | static const u32 nfs4_minimal_spo_must_enforce[2] = { |
3573 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
3574 | 1 << (OP_EXCHANGE_ID - 32) | | |
3575 | 1 << (OP_CREATE_SESSION - 32) | | |
3576 | 1 << (OP_DESTROY_SESSION - 32) | | |
3577 | 1 << (OP_DESTROY_CLIENTID - 32) | |
3578 | }; | |
3579 | ||
2db134eb | 3580 | static __be32 |
57b7b43b | 3581 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3582 | struct nfsd4_exchange_id *exid) |
3583 | { | |
d0a381dd | 3584 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3585 | __be32 *p; |
0733d213 AA |
3586 | char *major_id; |
3587 | char *server_scope; | |
3588 | int major_id_sz; | |
3589 | int server_scope_sz; | |
3590 | uint64_t minor_id = 0; | |
3591 | ||
3592 | if (nfserr) | |
3593 | return nfserr; | |
3594 | ||
3595 | major_id = utsname()->nodename; | |
3596 | major_id_sz = strlen(major_id); | |
3597 | server_scope = utsname()->nodename; | |
3598 | server_scope_sz = strlen(server_scope); | |
3599 | ||
d0a381dd | 3600 | p = xdr_reserve_space(xdr, |
0733d213 AA |
3601 | 8 /* eir_clientid */ + |
3602 | 4 /* eir_sequenceid */ + | |
3603 | 4 /* eir_flags */ + | |
a8bb84bc | 3604 | 4 /* spr_how */); |
d0a381dd BF |
3605 | if (!p) |
3606 | return nfserr_resource; | |
0733d213 | 3607 | |
0c0c267b | 3608 | p = xdr_encode_opaque_fixed(p, &exid->clientid, 8); |
c373b0a4 BF |
3609 | *p++ = cpu_to_be32(exid->seqid); |
3610 | *p++ = cpu_to_be32(exid->flags); | |
0733d213 | 3611 | |
c373b0a4 | 3612 | *p++ = cpu_to_be32(exid->spa_how); |
a8bb84bc | 3613 | |
57266a6e BF |
3614 | switch (exid->spa_how) { |
3615 | case SP4_NONE: | |
3616 | break; | |
3617 | case SP4_MACH_CRED: | |
a8bb84bc | 3618 | /* spo_must_enforce, spo_must_allow */ |
d0a381dd BF |
3619 | p = xdr_reserve_space(xdr, 16); |
3620 | if (!p) | |
3621 | return nfserr_resource; | |
a8bb84bc | 3622 | |
57266a6e | 3623 | /* spo_must_enforce bitmap: */ |
c373b0a4 BF |
3624 | *p++ = cpu_to_be32(2); |
3625 | *p++ = cpu_to_be32(nfs4_minimal_spo_must_enforce[0]); | |
3626 | *p++ = cpu_to_be32(nfs4_minimal_spo_must_enforce[1]); | |
57266a6e | 3627 | /* empty spo_must_allow bitmap: */ |
c373b0a4 | 3628 | *p++ = cpu_to_be32(0); |
a8bb84bc | 3629 | |
57266a6e BF |
3630 | break; |
3631 | default: | |
3632 | WARN_ON_ONCE(1); | |
3633 | } | |
0733d213 | 3634 | |
d0a381dd | 3635 | p = xdr_reserve_space(xdr, |
a8bb84bc KM |
3636 | 8 /* so_minor_id */ + |
3637 | 4 /* so_major_id.len */ + | |
3638 | (XDR_QUADLEN(major_id_sz) * 4) + | |
3639 | 4 /* eir_server_scope.len */ + | |
3640 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
3641 | 4 /* eir_server_impl_id.count (0) */); | |
d0a381dd BF |
3642 | if (!p) |
3643 | return nfserr_resource; | |
a8bb84bc | 3644 | |
0733d213 | 3645 | /* The server_owner struct */ |
b64c7f3b | 3646 | p = xdr_encode_hyper(p, minor_id); /* Minor id */ |
0733d213 | 3647 | /* major id */ |
0c0c267b | 3648 | p = xdr_encode_opaque(p, major_id, major_id_sz); |
0733d213 AA |
3649 | |
3650 | /* Server scope */ | |
0c0c267b | 3651 | p = xdr_encode_opaque(p, server_scope, server_scope_sz); |
0733d213 AA |
3652 | |
3653 | /* Implementation id */ | |
c373b0a4 | 3654 | *p++ = cpu_to_be32(0); /* zero length nfs_impl_id4 array */ |
0733d213 | 3655 | return 0; |
2db134eb AA |
3656 | } |
3657 | ||
3658 | static __be32 | |
57b7b43b | 3659 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3660 | struct nfsd4_create_session *sess) |
3661 | { | |
d0a381dd | 3662 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3663 | __be32 *p; |
ec6b5d7b AA |
3664 | |
3665 | if (nfserr) | |
3666 | return nfserr; | |
3667 | ||
d0a381dd BF |
3668 | p = xdr_reserve_space(xdr, 24); |
3669 | if (!p) | |
3670 | return nfserr_resource; | |
0c0c267b BF |
3671 | p = xdr_encode_opaque_fixed(p, sess->sessionid.data, |
3672 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
3673 | *p++ = cpu_to_be32(sess->seqid); |
3674 | *p++ = cpu_to_be32(sess->flags); | |
ec6b5d7b | 3675 | |
d0a381dd BF |
3676 | p = xdr_reserve_space(xdr, 28); |
3677 | if (!p) | |
3678 | return nfserr_resource; | |
c373b0a4 BF |
3679 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
3680 | *p++ = cpu_to_be32(sess->fore_channel.maxreq_sz); | |
3681 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_sz); | |
3682 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_cached); | |
3683 | *p++ = cpu_to_be32(sess->fore_channel.maxops); | |
3684 | *p++ = cpu_to_be32(sess->fore_channel.maxreqs); | |
3685 | *p++ = cpu_to_be32(sess->fore_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
3686 | |
3687 | if (sess->fore_channel.nr_rdma_attrs) { | |
d0a381dd BF |
3688 | p = xdr_reserve_space(xdr, 4); |
3689 | if (!p) | |
3690 | return nfserr_resource; | |
c373b0a4 | 3691 | *p++ = cpu_to_be32(sess->fore_channel.rdma_attrs); |
ec6b5d7b AA |
3692 | } |
3693 | ||
d0a381dd BF |
3694 | p = xdr_reserve_space(xdr, 28); |
3695 | if (!p) | |
3696 | return nfserr_resource; | |
c373b0a4 BF |
3697 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
3698 | *p++ = cpu_to_be32(sess->back_channel.maxreq_sz); | |
3699 | *p++ = cpu_to_be32(sess->back_channel.maxresp_sz); | |
3700 | *p++ = cpu_to_be32(sess->back_channel.maxresp_cached); | |
3701 | *p++ = cpu_to_be32(sess->back_channel.maxops); | |
3702 | *p++ = cpu_to_be32(sess->back_channel.maxreqs); | |
3703 | *p++ = cpu_to_be32(sess->back_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
3704 | |
3705 | if (sess->back_channel.nr_rdma_attrs) { | |
d0a381dd BF |
3706 | p = xdr_reserve_space(xdr, 4); |
3707 | if (!p) | |
3708 | return nfserr_resource; | |
c373b0a4 | 3709 | *p++ = cpu_to_be32(sess->back_channel.rdma_attrs); |
ec6b5d7b AA |
3710 | } |
3711 | return 0; | |
2db134eb AA |
3712 | } |
3713 | ||
c47d832b | 3714 | static __be32 |
57b7b43b | 3715 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3716 | struct nfsd4_sequence *seq) |
3717 | { | |
d0a381dd | 3718 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3719 | __be32 *p; |
b85d4c01 BH |
3720 | |
3721 | if (nfserr) | |
3722 | return nfserr; | |
3723 | ||
d0a381dd BF |
3724 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 20); |
3725 | if (!p) | |
3726 | return nfserr_resource; | |
0c0c267b BF |
3727 | p = xdr_encode_opaque_fixed(p, seq->sessionid.data, |
3728 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
3729 | *p++ = cpu_to_be32(seq->seqid); |
3730 | *p++ = cpu_to_be32(seq->slotid); | |
b7d7ca35 | 3731 | /* Note slotid's are numbered from zero: */ |
c373b0a4 BF |
3732 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_highest_slotid */ |
3733 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_target_highest_slotid */ | |
3734 | *p++ = cpu_to_be32(seq->status_flags); | |
b85d4c01 | 3735 | |
f5236013 | 3736 | resp->cstate.data_offset = xdr->buf->len; /* DRC cache data pointer */ |
b85d4c01 | 3737 | return 0; |
2db134eb AA |
3738 | } |
3739 | ||
2355c596 | 3740 | static __be32 |
57b7b43b | 3741 | nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
17456804 BS |
3742 | struct nfsd4_test_stateid *test_stateid) |
3743 | { | |
d0a381dd | 3744 | struct xdr_stream *xdr = &resp->xdr; |
03cfb420 | 3745 | struct nfsd4_test_stateid_id *stateid, *next; |
17456804 | 3746 | __be32 *p; |
17456804 | 3747 | |
a11fcce1 BF |
3748 | if (nfserr) |
3749 | return nfserr; | |
3750 | ||
d0a381dd BF |
3751 | p = xdr_reserve_space(xdr, 4 + (4 * test_stateid->ts_num_ids)); |
3752 | if (!p) | |
3753 | return nfserr_resource; | |
17456804 | 3754 | *p++ = htonl(test_stateid->ts_num_ids); |
17456804 | 3755 | |
03cfb420 | 3756 | list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) { |
02f5fde5 | 3757 | *p++ = stateid->ts_id_status; |
17456804 | 3758 | } |
17456804 BS |
3759 | |
3760 | return nfserr; | |
3761 | } | |
3762 | ||
695e12f8 BH |
3763 | static __be32 |
3764 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
3765 | { | |
3766 | return nfserr; | |
3767 | } | |
3768 | ||
3769 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
3770 | ||
2db134eb AA |
3771 | /* |
3772 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
3773 | * since we don't need to filter out obsolete ops as this is | |
3774 | * done in the decoding phase. | |
3775 | */ | |
695e12f8 | 3776 | static nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
3777 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
3778 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
3779 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
3780 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
3781 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
3782 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
3783 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
3784 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
3785 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
3786 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
3787 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
3788 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
3789 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
3790 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
3791 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3792 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 3793 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
3794 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
3795 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
3796 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3797 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3798 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3799 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
3800 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
3801 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
3802 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
3803 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
3804 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
3805 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3806 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3807 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
3808 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
3809 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
3810 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
3811 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3812 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
3813 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3814 | |
3815 | /* NFSv4.1 operations */ | |
3816 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
1d1bc8f2 | 3817 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
2db134eb AA |
3818 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
3819 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
43212cc7 KM |
3820 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_noop, |
3821 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3822 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3823 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, | |
3824 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
3825 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
3826 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
3827 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
22b6dee8 | 3828 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
2db134eb AA |
3829 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
3830 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
17456804 | 3831 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, |
2db134eb AA |
3832 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3833 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
3834 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
695e12f8 BH |
3835 | }; |
3836 | ||
496c262c | 3837 | /* |
a8095f7e BF |
3838 | * Calculate whether we still have space to encode repsize bytes. |
3839 | * There are two considerations: | |
3840 | * - For NFS versions >=4.1, the size of the reply must stay within | |
3841 | * session limits | |
3842 | * - For all NFS versions, we must stay within limited preallocated | |
3843 | * buffer space. | |
496c262c | 3844 | * |
a8095f7e BF |
3845 | * This is called before the operation is processed, so can only provide |
3846 | * an upper estimate. For some nonidempotent operations (such as | |
3847 | * getattr), it's not necessarily a problem if that estimate is wrong, | |
3848 | * as we can fail it after processing without significant side effects. | |
496c262c | 3849 | */ |
a8095f7e | 3850 | __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 respsize) |
496c262c | 3851 | { |
67492c99 | 3852 | struct xdr_buf *buf = &resp->rqstp->rq_res; |
47ee5298 | 3853 | struct nfsd4_slot *slot = resp->cstate.slot; |
496c262c | 3854 | |
47ee5298 BF |
3855 | if (buf->len + respsize <= buf->buflen) |
3856 | return nfs_ok; | |
3857 | if (!nfsd4_has_session(&resp->cstate)) | |
ea8d7720 | 3858 | return nfserr_resource; |
47ee5298 BF |
3859 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) { |
3860 | WARN_ON_ONCE(1); | |
3861 | return nfserr_rep_too_big_to_cache; | |
ea8d7720 | 3862 | } |
47ee5298 | 3863 | return nfserr_rep_too_big; |
496c262c AA |
3864 | } |
3865 | ||
1da177e4 LT |
3866 | void |
3867 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3868 | { | |
082d4bd7 | 3869 | struct xdr_stream *xdr = &resp->xdr; |
9411b1d4 | 3870 | struct nfs4_stateowner *so = resp->cstate.replay_owner; |
5f4ab945 | 3871 | struct svc_rqst *rqstp = resp->rqstp; |
082d4bd7 | 3872 | int post_err_offset; |
07d1f802 | 3873 | nfsd4_enc encoder; |
bc749ca4 | 3874 | __be32 *p; |
1da177e4 | 3875 | |
d0a381dd BF |
3876 | p = xdr_reserve_space(xdr, 8); |
3877 | if (!p) { | |
3878 | WARN_ON_ONCE(1); | |
3879 | return; | |
3880 | } | |
c373b0a4 | 3881 | *p++ = cpu_to_be32(op->opnum); |
082d4bd7 | 3882 | post_err_offset = xdr->buf->len; |
1da177e4 | 3883 | |
695e12f8 BH |
3884 | if (op->opnum == OP_ILLEGAL) |
3885 | goto status; | |
3886 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || | |
3887 | !nfsd4_enc_ops[op->opnum]); | |
07d1f802 BF |
3888 | encoder = nfsd4_enc_ops[op->opnum]; |
3889 | op->status = encoder(resp, op->status, &op->u); | |
2825a7f9 BF |
3890 | xdr_commit_encode(xdr); |
3891 | ||
067e1ace | 3892 | /* nfsd4_check_resp_size guarantees enough room for error status */ |
5f4ab945 BF |
3893 | if (!op->status) { |
3894 | int space_needed = 0; | |
3895 | if (!nfsd4_last_compound_op(rqstp)) | |
3896 | space_needed = COMPOUND_ERR_SLACK_SPACE; | |
3897 | op->status = nfsd4_check_resp_size(resp, space_needed); | |
3898 | } | |
c8f13d97 BF |
3899 | if (op->status == nfserr_resource && nfsd4_has_session(&resp->cstate)) { |
3900 | struct nfsd4_slot *slot = resp->cstate.slot; | |
3901 | ||
3902 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) | |
3903 | op->status = nfserr_rep_too_big_to_cache; | |
3904 | else | |
3905 | op->status = nfserr_rep_too_big; | |
3906 | } | |
07d1f802 BF |
3907 | if (op->status == nfserr_resource || |
3908 | op->status == nfserr_rep_too_big || | |
3909 | op->status == nfserr_rep_too_big_to_cache) { | |
3910 | /* | |
3911 | * The operation may have already been encoded or | |
3912 | * partially encoded. No op returns anything additional | |
3913 | * in the case of one of these three errors, so we can | |
3914 | * just truncate back to after the status. But it's a | |
3915 | * bug if we had to do this on a non-idempotent op: | |
3916 | */ | |
3917 | warn_on_nonidempotent_op(op); | |
082d4bd7 | 3918 | xdr_truncate_encode(xdr, post_err_offset); |
07d1f802 | 3919 | } |
9411b1d4 | 3920 | if (so) { |
082d4bd7 BF |
3921 | int len = xdr->buf->len - post_err_offset; |
3922 | ||
9411b1d4 | 3923 | so->so_replay.rp_status = op->status; |
082d4bd7 BF |
3924 | so->so_replay.rp_buflen = len; |
3925 | read_bytes_from_xdr_buf(xdr->buf, post_err_offset, | |
3926 | so->so_replay.rp_buf, len); | |
9411b1d4 | 3927 | } |
695e12f8 | 3928 | status: |
082d4bd7 BF |
3929 | /* Note that op->status is already in network byte order: */ |
3930 | write_bytes_to_xdr_buf(xdr->buf, post_err_offset - 4, &op->status, 4); | |
1da177e4 LT |
3931 | } |
3932 | ||
3933 | /* | |
3934 | * Encode the reply stored in the stateowner reply cache | |
3935 | * | |
3936 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
3937 | * previously sent already encoded operation. | |
3938 | * | |
3939 | * called with nfs4_lock_state() held | |
3940 | */ | |
3941 | void | |
d0a381dd | 3942 | nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op) |
1da177e4 | 3943 | { |
bc749ca4 | 3944 | __be32 *p; |
1da177e4 LT |
3945 | struct nfs4_replay *rp = op->replay; |
3946 | ||
3947 | BUG_ON(!rp); | |
3948 | ||
d0a381dd BF |
3949 | p = xdr_reserve_space(xdr, 8 + rp->rp_buflen); |
3950 | if (!p) { | |
3951 | WARN_ON_ONCE(1); | |
3952 | return; | |
3953 | } | |
c373b0a4 | 3954 | *p++ = cpu_to_be32(op->opnum); |
1da177e4 | 3955 | *p++ = rp->rp_status; /* already xdr'ed */ |
1da177e4 | 3956 | |
0c0c267b | 3957 | p = xdr_encode_opaque_fixed(p, rp->rp_buf, rp->rp_buflen); |
1da177e4 LT |
3958 | } |
3959 | ||
1da177e4 | 3960 | int |
2ebbc012 | 3961 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
3962 | { |
3963 | return xdr_ressize_check(rqstp, p); | |
3964 | } | |
3965 | ||
3e98abff | 3966 | int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp) |
1da177e4 | 3967 | { |
3e98abff BF |
3968 | struct svc_rqst *rqstp = rq; |
3969 | struct nfsd4_compoundargs *args = rqstp->rq_argp; | |
3970 | ||
1da177e4 LT |
3971 | if (args->ops != args->iops) { |
3972 | kfree(args->ops); | |
3973 | args->ops = args->iops; | |
3974 | } | |
f99d49ad JJ |
3975 | kfree(args->tmpp); |
3976 | args->tmpp = NULL; | |
1da177e4 LT |
3977 | while (args->to_free) { |
3978 | struct tmpbuf *tb = args->to_free; | |
3979 | args->to_free = tb->next; | |
3980 | tb->release(tb->buf); | |
3981 | kfree(tb); | |
3982 | } | |
3e98abff | 3983 | return 1; |
1da177e4 LT |
3984 | } |
3985 | ||
3986 | int | |
2ebbc012 | 3987 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 3988 | { |
e874f9f8 JL |
3989 | if (rqstp->rq_arg.head[0].iov_len % 4) { |
3990 | /* client is nuts */ | |
3991 | dprintk("%s: compound not properly padded! (peeraddr=%pISc xid=0x%x)", | |
3992 | __func__, svc_addr(rqstp), be32_to_cpu(rqstp->rq_xid)); | |
3993 | return 0; | |
3994 | } | |
1da177e4 LT |
3995 | args->p = p; |
3996 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
3997 | args->pagelist = rqstp->rq_arg.pages; | |
3998 | args->pagelen = rqstp->rq_arg.page_len; | |
3999 | args->tmpp = NULL; | |
4000 | args->to_free = NULL; | |
4001 | args->ops = args->iops; | |
4002 | args->rqstp = rqstp; | |
4003 | ||
3e98abff | 4004 | return !nfsd4_decode_compound(args); |
1da177e4 LT |
4005 | } |
4006 | ||
4007 | int | |
2ebbc012 | 4008 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
4009 | { |
4010 | /* | |
4011 | * All that remains is to write the tag and operation count... | |
4012 | */ | |
557ce264 | 4013 | struct nfsd4_compound_state *cs = &resp->cstate; |
6ac90391 BF |
4014 | struct xdr_buf *buf = resp->xdr.buf; |
4015 | ||
4016 | WARN_ON_ONCE(buf->len != buf->head[0].iov_len + buf->page_len + | |
4017 | buf->tail[0].iov_len); | |
dd97fdde | 4018 | |
2825a7f9 BF |
4019 | rqstp->rq_next_page = resp->xdr.page_ptr + 1; |
4020 | ||
1da177e4 LT |
4021 | p = resp->tagp; |
4022 | *p++ = htonl(resp->taglen); | |
4023 | memcpy(p, resp->tag, resp->taglen); | |
4024 | p += XDR_QUADLEN(resp->taglen); | |
4025 | *p++ = htonl(resp->opcnt); | |
4026 | ||
26c0c75e | 4027 | if (nfsd4_has_session(cs)) { |
f0f51f5c BF |
4028 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
4029 | struct nfs4_client *clp = cs->session->se_client; | |
26c0c75e BF |
4030 | if (cs->status != nfserr_replay_cache) { |
4031 | nfsd4_store_cache_entry(resp); | |
73e79482 | 4032 | cs->slot->sl_flags &= ~NFSD4_SLOT_INUSE; |
26c0c75e | 4033 | } |
d7682988 | 4034 | /* Renew the clientid on success and on replay */ |
f0f51f5c | 4035 | spin_lock(&nn->client_lock); |
221a6876 | 4036 | nfsd4_put_session(cs->session); |
f0f51f5c BF |
4037 | spin_unlock(&nn->client_lock); |
4038 | put_client_renew(clp); | |
da3846a2 | 4039 | } |
1da177e4 LT |
4040 | return 1; |
4041 | } | |
4042 | ||
4043 | /* | |
4044 | * Local variables: | |
4045 | * c-basic-offset: 8 | |
4046 | * End: | |
4047 | */ |