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> |
1da177e4 | 47 | #include <linux/nfsd_idmap.h> |
1da177e4 | 48 | #include <linux/nfs4_acl.h> |
4796f457 | 49 | #include <linux/sunrpc/svcauth_gss.h> |
9a74af21 BH |
50 | |
51 | #include "xdr4.h" | |
0a3adade | 52 | #include "vfs.h" |
1da177e4 LT |
53 | |
54 | #define NFSDDBG_FACILITY NFSDDBG_XDR | |
55 | ||
42ca0993 BF |
56 | /* |
57 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing | |
58 | * directory in order to indicate to the client that a filesystem boundary is present | |
59 | * We use a fixed fsid for a referral | |
60 | */ | |
61 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL | |
62 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL | |
63 | ||
b37ad28b AV |
64 | static __be32 |
65 | check_filename(char *str, int len, __be32 err) | |
1da177e4 LT |
66 | { |
67 | int i; | |
68 | ||
69 | if (len == 0) | |
70 | return nfserr_inval; | |
71 | if (isdotent(str, len)) | |
72 | return err; | |
73 | for (i = 0; i < len; i++) | |
74 | if (str[i] == '/') | |
75 | return err; | |
76 | return 0; | |
77 | } | |
78 | ||
1da177e4 | 79 | #define DECODE_HEAD \ |
2ebbc012 | 80 | __be32 *p; \ |
b37ad28b | 81 | __be32 status |
1da177e4 LT |
82 | #define DECODE_TAIL \ |
83 | status = 0; \ | |
84 | out: \ | |
85 | return status; \ | |
86 | xdr_error: \ | |
817cb9d4 CL |
87 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
88 | __FILE__, __LINE__); \ | |
1da177e4 LT |
89 | status = nfserr_bad_xdr; \ |
90 | goto out | |
91 | ||
92 | #define READ32(x) (x) = ntohl(*p++) | |
93 | #define READ64(x) do { \ | |
94 | (x) = (u64)ntohl(*p++) << 32; \ | |
95 | (x) |= ntohl(*p++); \ | |
96 | } while (0) | |
97 | #define READTIME(x) do { \ | |
98 | p++; \ | |
99 | (x) = ntohl(*p++); \ | |
100 | p++; \ | |
101 | } while (0) | |
102 | #define READMEM(x,nbytes) do { \ | |
103 | x = (char *)p; \ | |
104 | p += XDR_QUADLEN(nbytes); \ | |
105 | } while (0) | |
106 | #define SAVEMEM(x,nbytes) do { \ | |
107 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
108 | savemem(argp, p, nbytes) : \ | |
109 | (char *)p)) { \ | |
817cb9d4 CL |
110 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
111 | __FILE__, __LINE__); \ | |
1da177e4 LT |
112 | goto xdr_error; \ |
113 | } \ | |
114 | p += XDR_QUADLEN(nbytes); \ | |
115 | } while (0) | |
116 | #define COPYMEM(x,nbytes) do { \ | |
117 | memcpy((x), p, nbytes); \ | |
118 | p += XDR_QUADLEN(nbytes); \ | |
119 | } while (0) | |
120 | ||
121 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ | |
122 | #define READ_BUF(nbytes) do { \ | |
123 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ | |
124 | p = argp->p; \ | |
125 | argp->p += XDR_QUADLEN(nbytes); \ | |
126 | } else if (!(p = read_buf(argp, nbytes))) { \ | |
817cb9d4 CL |
127 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
128 | __FILE__, __LINE__); \ | |
1da177e4 LT |
129 | goto xdr_error; \ |
130 | } \ | |
131 | } while (0) | |
132 | ||
ca2a05aa | 133 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
1da177e4 LT |
134 | { |
135 | /* We want more bytes than seem to be available. | |
136 | * Maybe we need a new page, maybe we have just run out | |
137 | */ | |
ca2a05aa | 138 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
2ebbc012 | 139 | __be32 *p; |
1da177e4 LT |
140 | if (avail + argp->pagelen < nbytes) |
141 | return NULL; | |
142 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ | |
143 | return NULL; | |
144 | /* ok, we can do it with the current plus the next page */ | |
145 | if (nbytes <= sizeof(argp->tmp)) | |
146 | p = argp->tmp; | |
147 | else { | |
f99d49ad | 148 | kfree(argp->tmpp); |
1da177e4 LT |
149 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
150 | if (!p) | |
151 | return NULL; | |
152 | ||
153 | } | |
ca2a05aa BF |
154 | /* |
155 | * The following memcpy is safe because read_buf is always | |
156 | * called with nbytes > avail, and the two cases above both | |
157 | * guarantee p points to at least nbytes bytes. | |
158 | */ | |
1da177e4 LT |
159 | memcpy(p, argp->p, avail); |
160 | /* step to next page */ | |
161 | argp->p = page_address(argp->pagelist[0]); | |
162 | argp->pagelist++; | |
163 | if (argp->pagelen < PAGE_SIZE) { | |
2bc3c117 | 164 | argp->end = argp->p + (argp->pagelen>>2); |
1da177e4 LT |
165 | argp->pagelen = 0; |
166 | } else { | |
2bc3c117 | 167 | argp->end = argp->p + (PAGE_SIZE>>2); |
1da177e4 LT |
168 | argp->pagelen -= PAGE_SIZE; |
169 | } | |
170 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); | |
171 | argp->p += XDR_QUADLEN(nbytes - avail); | |
172 | return p; | |
173 | } | |
174 | ||
60adfc50 AA |
175 | static int zero_clientid(clientid_t *clid) |
176 | { | |
177 | return (clid->cl_boot == 0) && (clid->cl_id == 0); | |
178 | } | |
179 | ||
1da177e4 LT |
180 | static int |
181 | defer_free(struct nfsd4_compoundargs *argp, | |
182 | void (*release)(const void *), void *p) | |
183 | { | |
184 | struct tmpbuf *tb; | |
185 | ||
186 | tb = kmalloc(sizeof(*tb), GFP_KERNEL); | |
187 | if (!tb) | |
188 | return -ENOMEM; | |
189 | tb->buf = p; | |
190 | tb->release = release; | |
191 | tb->next = argp->to_free; | |
192 | argp->to_free = tb; | |
193 | return 0; | |
194 | } | |
195 | ||
2ebbc012 | 196 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
1da177e4 | 197 | { |
1da177e4 | 198 | if (p == argp->tmp) { |
a4db5fe5 BF |
199 | p = kmalloc(nbytes, GFP_KERNEL); |
200 | if (!p) | |
201 | return NULL; | |
1da177e4 LT |
202 | memcpy(p, argp->tmp, nbytes); |
203 | } else { | |
73dff8be | 204 | BUG_ON(p != argp->tmpp); |
1da177e4 LT |
205 | argp->tmpp = NULL; |
206 | } | |
207 | if (defer_free(argp, kfree, p)) { | |
a4db5fe5 | 208 | kfree(p); |
1da177e4 LT |
209 | return NULL; |
210 | } else | |
211 | return (char *)p; | |
212 | } | |
213 | ||
b37ad28b | 214 | static __be32 |
1da177e4 LT |
215 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
216 | { | |
217 | u32 bmlen; | |
218 | DECODE_HEAD; | |
219 | ||
220 | bmval[0] = 0; | |
221 | bmval[1] = 0; | |
7e705706 | 222 | bmval[2] = 0; |
1da177e4 LT |
223 | |
224 | READ_BUF(4); | |
225 | READ32(bmlen); | |
226 | if (bmlen > 1000) | |
227 | goto xdr_error; | |
228 | ||
229 | READ_BUF(bmlen << 2); | |
230 | if (bmlen > 0) | |
231 | READ32(bmval[0]); | |
232 | if (bmlen > 1) | |
233 | READ32(bmval[1]); | |
7e705706 AA |
234 | if (bmlen > 2) |
235 | READ32(bmval[2]); | |
1da177e4 LT |
236 | |
237 | DECODE_TAIL; | |
238 | } | |
239 | ||
b37ad28b | 240 | static __be32 |
3c8e0316 | 241 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, |
c0d6fc8a | 242 | struct iattr *iattr, struct nfs4_acl **acl) |
1da177e4 LT |
243 | { |
244 | int expected_len, len = 0; | |
245 | u32 dummy32; | |
246 | char *buf; | |
b8dd7b9a | 247 | int host_err; |
1da177e4 LT |
248 | |
249 | DECODE_HEAD; | |
250 | iattr->ia_valid = 0; | |
251 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
252 | return status; | |
253 | ||
1da177e4 LT |
254 | READ_BUF(4); |
255 | READ32(expected_len); | |
256 | ||
257 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
258 | READ_BUF(8); | |
259 | len += 8; | |
260 | READ64(iattr->ia_size); | |
261 | iattr->ia_valid |= ATTR_SIZE; | |
262 | } | |
263 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
28e05dd8 BF |
264 | int nace; |
265 | struct nfs4_ace *ace; | |
1da177e4 LT |
266 | |
267 | READ_BUF(4); len += 4; | |
268 | READ32(nace); | |
269 | ||
28e05dd8 BF |
270 | if (nace > NFS4_ACL_MAX) |
271 | return nfserr_resource; | |
272 | ||
273 | *acl = nfs4_acl_new(nace); | |
1da177e4 | 274 | if (*acl == NULL) { |
b8dd7b9a | 275 | host_err = -ENOMEM; |
1da177e4 LT |
276 | goto out_nfserr; |
277 | } | |
28e05dd8 | 278 | defer_free(argp, kfree, *acl); |
1da177e4 | 279 | |
28e05dd8 BF |
280 | (*acl)->naces = nace; |
281 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { | |
1da177e4 | 282 | READ_BUF(16); len += 16; |
28e05dd8 BF |
283 | READ32(ace->type); |
284 | READ32(ace->flag); | |
285 | READ32(ace->access_mask); | |
1da177e4 LT |
286 | READ32(dummy32); |
287 | READ_BUF(dummy32); | |
288 | len += XDR_QUADLEN(dummy32) << 2; | |
289 | READMEM(buf, dummy32); | |
28e05dd8 | 290 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
b8dd7b9a | 291 | host_err = 0; |
28e05dd8 BF |
292 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
293 | ace->who = 0; | |
294 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) | |
b8dd7b9a | 295 | host_err = nfsd_map_name_to_gid(argp->rqstp, |
28e05dd8 | 296 | buf, dummy32, &ace->who); |
1da177e4 | 297 | else |
b8dd7b9a | 298 | host_err = nfsd_map_name_to_uid(argp->rqstp, |
28e05dd8 | 299 | buf, dummy32, &ace->who); |
b8dd7b9a | 300 | if (host_err) |
1da177e4 | 301 | goto out_nfserr; |
1da177e4 LT |
302 | } |
303 | } else | |
304 | *acl = NULL; | |
305 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
306 | READ_BUF(4); | |
307 | len += 4; | |
308 | READ32(iattr->ia_mode); | |
309 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); | |
310 | iattr->ia_valid |= ATTR_MODE; | |
311 | } | |
312 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
313 | READ_BUF(4); | |
314 | len += 4; | |
315 | READ32(dummy32); | |
316 | READ_BUF(dummy32); | |
317 | len += (XDR_QUADLEN(dummy32) << 2); | |
318 | READMEM(buf, dummy32); | |
b8dd7b9a | 319 | if ((host_err = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
1da177e4 LT |
320 | goto out_nfserr; |
321 | iattr->ia_valid |= ATTR_UID; | |
322 | } | |
323 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
324 | READ_BUF(4); | |
325 | len += 4; | |
326 | READ32(dummy32); | |
327 | READ_BUF(dummy32); | |
328 | len += (XDR_QUADLEN(dummy32) << 2); | |
329 | READMEM(buf, dummy32); | |
b8dd7b9a | 330 | if ((host_err = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
1da177e4 LT |
331 | goto out_nfserr; |
332 | iattr->ia_valid |= ATTR_GID; | |
333 | } | |
334 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
335 | READ_BUF(4); | |
336 | len += 4; | |
337 | READ32(dummy32); | |
338 | switch (dummy32) { | |
339 | case NFS4_SET_TO_CLIENT_TIME: | |
340 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
341 | all 32 bits of 'nseconds'. */ | |
342 | READ_BUF(12); | |
343 | len += 12; | |
344 | READ32(dummy32); | |
345 | if (dummy32) | |
346 | return nfserr_inval; | |
347 | READ32(iattr->ia_atime.tv_sec); | |
348 | READ32(iattr->ia_atime.tv_nsec); | |
349 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) | |
350 | return nfserr_inval; | |
351 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); | |
352 | break; | |
353 | case NFS4_SET_TO_SERVER_TIME: | |
354 | iattr->ia_valid |= ATTR_ATIME; | |
355 | break; | |
356 | default: | |
357 | goto xdr_error; | |
358 | } | |
359 | } | |
1da177e4 LT |
360 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
361 | READ_BUF(4); | |
362 | len += 4; | |
363 | READ32(dummy32); | |
364 | switch (dummy32) { | |
365 | case NFS4_SET_TO_CLIENT_TIME: | |
366 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
367 | all 32 bits of 'nseconds'. */ | |
368 | READ_BUF(12); | |
369 | len += 12; | |
370 | READ32(dummy32); | |
371 | if (dummy32) | |
372 | return nfserr_inval; | |
373 | READ32(iattr->ia_mtime.tv_sec); | |
374 | READ32(iattr->ia_mtime.tv_nsec); | |
375 | if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) | |
376 | return nfserr_inval; | |
377 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); | |
378 | break; | |
379 | case NFS4_SET_TO_SERVER_TIME: | |
380 | iattr->ia_valid |= ATTR_MTIME; | |
381 | break; | |
382 | default: | |
383 | goto xdr_error; | |
384 | } | |
385 | } | |
3c8e0316 YZ |
386 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
387 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 | |
388 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) | |
389 | READ_BUF(expected_len - len); | |
390 | else if (len != expected_len) | |
1da177e4 LT |
391 | goto xdr_error; |
392 | ||
393 | DECODE_TAIL; | |
394 | ||
395 | out_nfserr: | |
b8dd7b9a | 396 | status = nfserrno(host_err); |
1da177e4 LT |
397 | goto out; |
398 | } | |
399 | ||
e31a1b66 BH |
400 | static __be32 |
401 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
402 | { | |
403 | DECODE_HEAD; | |
404 | ||
405 | READ_BUF(sizeof(stateid_t)); | |
406 | READ32(sid->si_generation); | |
407 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
408 | ||
409 | DECODE_TAIL; | |
410 | } | |
411 | ||
b37ad28b | 412 | static __be32 |
1da177e4 LT |
413 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
414 | { | |
415 | DECODE_HEAD; | |
416 | ||
417 | READ_BUF(4); | |
418 | READ32(access->ac_req_access); | |
419 | ||
420 | DECODE_TAIL; | |
421 | } | |
422 | ||
b37ad28b | 423 | static __be32 |
1da177e4 LT |
424 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
425 | { | |
426 | DECODE_HEAD; | |
427 | ||
428 | close->cl_stateowner = NULL; | |
e31a1b66 | 429 | READ_BUF(4); |
1da177e4 | 430 | READ32(close->cl_seqid); |
e31a1b66 | 431 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
1da177e4 LT |
432 | |
433 | DECODE_TAIL; | |
434 | } | |
435 | ||
436 | ||
b37ad28b | 437 | static __be32 |
1da177e4 LT |
438 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
439 | { | |
440 | DECODE_HEAD; | |
441 | ||
442 | READ_BUF(12); | |
443 | READ64(commit->co_offset); | |
444 | READ32(commit->co_count); | |
445 | ||
446 | DECODE_TAIL; | |
447 | } | |
448 | ||
b37ad28b | 449 | static __be32 |
1da177e4 LT |
450 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
451 | { | |
452 | DECODE_HEAD; | |
453 | ||
454 | READ_BUF(4); | |
455 | READ32(create->cr_type); | |
456 | switch (create->cr_type) { | |
457 | case NF4LNK: | |
458 | READ_BUF(4); | |
459 | READ32(create->cr_linklen); | |
460 | READ_BUF(create->cr_linklen); | |
461 | SAVEMEM(create->cr_linkname, create->cr_linklen); | |
462 | break; | |
463 | case NF4BLK: | |
464 | case NF4CHR: | |
465 | READ_BUF(8); | |
466 | READ32(create->cr_specdata1); | |
467 | READ32(create->cr_specdata2); | |
468 | break; | |
469 | case NF4SOCK: | |
470 | case NF4FIFO: | |
471 | case NF4DIR: | |
472 | default: | |
473 | break; | |
474 | } | |
475 | ||
476 | READ_BUF(4); | |
477 | READ32(create->cr_namelen); | |
478 | READ_BUF(create->cr_namelen); | |
479 | SAVEMEM(create->cr_name, create->cr_namelen); | |
480 | if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval))) | |
481 | return status; | |
482 | ||
3c8e0316 YZ |
483 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
484 | &create->cr_acl); | |
c0d6fc8a | 485 | if (status) |
1da177e4 LT |
486 | goto out; |
487 | ||
488 | DECODE_TAIL; | |
489 | } | |
490 | ||
b37ad28b | 491 | static inline __be32 |
1da177e4 LT |
492 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
493 | { | |
e31a1b66 | 494 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
1da177e4 LT |
495 | } |
496 | ||
b37ad28b | 497 | static inline __be32 |
1da177e4 LT |
498 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
499 | { | |
500 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
501 | } | |
502 | ||
b37ad28b | 503 | static __be32 |
1da177e4 LT |
504 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
505 | { | |
506 | DECODE_HEAD; | |
507 | ||
508 | READ_BUF(4); | |
509 | READ32(link->li_namelen); | |
510 | READ_BUF(link->li_namelen); | |
511 | SAVEMEM(link->li_name, link->li_namelen); | |
512 | if ((status = check_filename(link->li_name, link->li_namelen, nfserr_inval))) | |
513 | return status; | |
514 | ||
515 | DECODE_TAIL; | |
516 | } | |
517 | ||
b37ad28b | 518 | static __be32 |
1da177e4 LT |
519 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
520 | { | |
521 | DECODE_HEAD; | |
522 | ||
3a65588a | 523 | lock->lk_replay_owner = NULL; |
1da177e4 LT |
524 | /* |
525 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
526 | */ | |
527 | READ_BUF(28); | |
528 | READ32(lock->lk_type); | |
529 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) | |
530 | goto xdr_error; | |
531 | READ32(lock->lk_reclaim); | |
532 | READ64(lock->lk_offset); | |
533 | READ64(lock->lk_length); | |
534 | READ32(lock->lk_is_new); | |
535 | ||
536 | if (lock->lk_is_new) { | |
e31a1b66 | 537 | READ_BUF(4); |
1da177e4 | 538 | READ32(lock->lk_new_open_seqid); |
e31a1b66 BH |
539 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
540 | if (status) | |
541 | return status; | |
542 | READ_BUF(8 + sizeof(clientid_t)); | |
1da177e4 LT |
543 | READ32(lock->lk_new_lock_seqid); |
544 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); | |
545 | READ32(lock->lk_new_owner.len); | |
546 | READ_BUF(lock->lk_new_owner.len); | |
547 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
548 | } else { | |
e31a1b66 BH |
549 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
550 | if (status) | |
551 | return status; | |
552 | READ_BUF(4); | |
1da177e4 LT |
553 | READ32(lock->lk_old_lock_seqid); |
554 | } | |
555 | ||
556 | DECODE_TAIL; | |
557 | } | |
558 | ||
b37ad28b | 559 | static __be32 |
1da177e4 LT |
560 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
561 | { | |
562 | DECODE_HEAD; | |
563 | ||
564 | READ_BUF(32); | |
565 | READ32(lockt->lt_type); | |
566 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) | |
567 | goto xdr_error; | |
568 | READ64(lockt->lt_offset); | |
569 | READ64(lockt->lt_length); | |
570 | COPYMEM(&lockt->lt_clientid, 8); | |
571 | READ32(lockt->lt_owner.len); | |
572 | READ_BUF(lockt->lt_owner.len); | |
573 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
574 | ||
60adfc50 AA |
575 | if (argp->minorversion && !zero_clientid(&lockt->lt_clientid)) |
576 | return nfserr_inval; | |
1da177e4 LT |
577 | DECODE_TAIL; |
578 | } | |
579 | ||
b37ad28b | 580 | static __be32 |
1da177e4 LT |
581 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
582 | { | |
583 | DECODE_HEAD; | |
584 | ||
585 | locku->lu_stateowner = NULL; | |
e31a1b66 | 586 | READ_BUF(8); |
1da177e4 LT |
587 | READ32(locku->lu_type); |
588 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) | |
589 | goto xdr_error; | |
590 | READ32(locku->lu_seqid); | |
e31a1b66 BH |
591 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
592 | if (status) | |
593 | return status; | |
594 | READ_BUF(16); | |
1da177e4 LT |
595 | READ64(locku->lu_offset); |
596 | READ64(locku->lu_length); | |
597 | ||
598 | DECODE_TAIL; | |
599 | } | |
600 | ||
b37ad28b | 601 | static __be32 |
1da177e4 LT |
602 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
603 | { | |
604 | DECODE_HEAD; | |
605 | ||
606 | READ_BUF(4); | |
607 | READ32(lookup->lo_len); | |
608 | READ_BUF(lookup->lo_len); | |
609 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
610 | if ((status = check_filename(lookup->lo_name, lookup->lo_len, nfserr_noent))) | |
611 | return status; | |
612 | ||
613 | DECODE_TAIL; | |
614 | } | |
615 | ||
b37ad28b | 616 | static __be32 |
1da177e4 LT |
617 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
618 | { | |
619 | DECODE_HEAD; | |
620 | ||
621 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
622 | open->op_iattr.ia_valid = 0; | |
623 | open->op_stateowner = NULL; | |
624 | ||
625 | /* seqid, share_access, share_deny, clientid, ownerlen */ | |
626 | READ_BUF(16 + sizeof(clientid_t)); | |
627 | READ32(open->op_seqid); | |
628 | READ32(open->op_share_access); | |
629 | READ32(open->op_share_deny); | |
630 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); | |
631 | READ32(open->op_owner.len); | |
632 | ||
633 | /* owner, open_flag */ | |
634 | READ_BUF(open->op_owner.len + 4); | |
635 | SAVEMEM(open->op_owner.data, open->op_owner.len); | |
636 | READ32(open->op_create); | |
637 | switch (open->op_create) { | |
638 | case NFS4_OPEN_NOCREATE: | |
639 | break; | |
640 | case NFS4_OPEN_CREATE: | |
641 | READ_BUF(4); | |
642 | READ32(open->op_createmode); | |
643 | switch (open->op_createmode) { | |
644 | case NFS4_CREATE_UNCHECKED: | |
645 | case NFS4_CREATE_GUARDED: | |
c0d6fc8a | 646 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
3c8e0316 | 647 | &open->op_iattr, &open->op_acl); |
c0d6fc8a | 648 | if (status) |
1da177e4 LT |
649 | goto out; |
650 | break; | |
651 | case NFS4_CREATE_EXCLUSIVE: | |
652 | READ_BUF(8); | |
653 | COPYMEM(open->op_verf.data, 8); | |
654 | break; | |
79fb54ab BH |
655 | case NFS4_CREATE_EXCLUSIVE4_1: |
656 | if (argp->minorversion < 1) | |
657 | goto xdr_error; | |
658 | READ_BUF(8); | |
659 | COPYMEM(open->op_verf.data, 8); | |
660 | status = nfsd4_decode_fattr(argp, open->op_bmval, | |
3c8e0316 | 661 | &open->op_iattr, &open->op_acl); |
79fb54ab BH |
662 | if (status) |
663 | goto out; | |
664 | break; | |
1da177e4 LT |
665 | default: |
666 | goto xdr_error; | |
667 | } | |
668 | break; | |
669 | default: | |
670 | goto xdr_error; | |
671 | } | |
672 | ||
673 | /* open_claim */ | |
674 | READ_BUF(4); | |
675 | READ32(open->op_claim_type); | |
676 | switch (open->op_claim_type) { | |
677 | case NFS4_OPEN_CLAIM_NULL: | |
678 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
679 | READ_BUF(4); | |
680 | READ32(open->op_fname.len); | |
681 | READ_BUF(open->op_fname.len); | |
682 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
683 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) | |
684 | return status; | |
685 | break; | |
686 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
687 | READ_BUF(4); | |
688 | READ32(open->op_delegate_type); | |
689 | break; | |
690 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
e31a1b66 BH |
691 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
692 | if (status) | |
693 | return status; | |
694 | READ_BUF(4); | |
1da177e4 LT |
695 | READ32(open->op_fname.len); |
696 | READ_BUF(open->op_fname.len); | |
697 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
698 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) | |
699 | return status; | |
700 | break; | |
701 | default: | |
702 | goto xdr_error; | |
703 | } | |
704 | ||
705 | DECODE_TAIL; | |
706 | } | |
707 | ||
b37ad28b | 708 | static __be32 |
1da177e4 LT |
709 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
710 | { | |
711 | DECODE_HEAD; | |
712 | ||
713 | open_conf->oc_stateowner = NULL; | |
e31a1b66 BH |
714 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
715 | if (status) | |
716 | return status; | |
717 | READ_BUF(4); | |
1da177e4 LT |
718 | READ32(open_conf->oc_seqid); |
719 | ||
720 | DECODE_TAIL; | |
721 | } | |
722 | ||
b37ad28b | 723 | static __be32 |
1da177e4 LT |
724 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
725 | { | |
726 | DECODE_HEAD; | |
727 | ||
728 | open_down->od_stateowner = NULL; | |
e31a1b66 BH |
729 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
730 | if (status) | |
731 | return status; | |
732 | READ_BUF(12); | |
1da177e4 LT |
733 | READ32(open_down->od_seqid); |
734 | READ32(open_down->od_share_access); | |
735 | READ32(open_down->od_share_deny); | |
736 | ||
737 | DECODE_TAIL; | |
738 | } | |
739 | ||
b37ad28b | 740 | static __be32 |
1da177e4 LT |
741 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
742 | { | |
743 | DECODE_HEAD; | |
744 | ||
745 | READ_BUF(4); | |
746 | READ32(putfh->pf_fhlen); | |
747 | if (putfh->pf_fhlen > NFS4_FHSIZE) | |
748 | goto xdr_error; | |
749 | READ_BUF(putfh->pf_fhlen); | |
750 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
751 | ||
752 | DECODE_TAIL; | |
753 | } | |
754 | ||
b37ad28b | 755 | static __be32 |
1da177e4 LT |
756 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
757 | { | |
758 | DECODE_HEAD; | |
759 | ||
e31a1b66 BH |
760 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
761 | if (status) | |
762 | return status; | |
763 | READ_BUF(12); | |
1da177e4 LT |
764 | READ64(read->rd_offset); |
765 | READ32(read->rd_length); | |
766 | ||
767 | DECODE_TAIL; | |
768 | } | |
769 | ||
b37ad28b | 770 | static __be32 |
1da177e4 LT |
771 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
772 | { | |
773 | DECODE_HEAD; | |
774 | ||
775 | READ_BUF(24); | |
776 | READ64(readdir->rd_cookie); | |
777 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); | |
778 | READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ | |
779 | READ32(readdir->rd_maxcount); | |
780 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) | |
781 | goto out; | |
782 | ||
783 | DECODE_TAIL; | |
784 | } | |
785 | ||
b37ad28b | 786 | static __be32 |
1da177e4 LT |
787 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
788 | { | |
789 | DECODE_HEAD; | |
790 | ||
791 | READ_BUF(4); | |
792 | READ32(remove->rm_namelen); | |
793 | READ_BUF(remove->rm_namelen); | |
794 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
795 | if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent))) | |
796 | return status; | |
797 | ||
798 | DECODE_TAIL; | |
799 | } | |
800 | ||
b37ad28b | 801 | static __be32 |
1da177e4 LT |
802 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
803 | { | |
804 | DECODE_HEAD; | |
805 | ||
806 | READ_BUF(4); | |
807 | READ32(rename->rn_snamelen); | |
808 | READ_BUF(rename->rn_snamelen + 4); | |
809 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); | |
810 | READ32(rename->rn_tnamelen); | |
811 | READ_BUF(rename->rn_tnamelen); | |
812 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
813 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent))) | |
814 | return status; | |
815 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval))) | |
816 | return status; | |
817 | ||
818 | DECODE_TAIL; | |
819 | } | |
820 | ||
b37ad28b | 821 | static __be32 |
1da177e4 LT |
822 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
823 | { | |
824 | DECODE_HEAD; | |
825 | ||
826 | READ_BUF(sizeof(clientid_t)); | |
827 | COPYMEM(clientid, sizeof(clientid_t)); | |
828 | ||
829 | DECODE_TAIL; | |
830 | } | |
831 | ||
dcb488a3 AA |
832 | static __be32 |
833 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
834 | struct nfsd4_secinfo *secinfo) | |
835 | { | |
836 | DECODE_HEAD; | |
837 | ||
838 | READ_BUF(4); | |
839 | READ32(secinfo->si_namelen); | |
840 | READ_BUF(secinfo->si_namelen); | |
841 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
842 | status = check_filename(secinfo->si_name, secinfo->si_namelen, | |
843 | nfserr_noent); | |
844 | if (status) | |
845 | return status; | |
846 | DECODE_TAIL; | |
847 | } | |
848 | ||
b37ad28b | 849 | static __be32 |
1da177e4 LT |
850 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
851 | { | |
e31a1b66 | 852 | __be32 status; |
1da177e4 | 853 | |
e31a1b66 BH |
854 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
855 | if (status) | |
856 | return status; | |
3c8e0316 YZ |
857 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
858 | &setattr->sa_acl); | |
1da177e4 LT |
859 | } |
860 | ||
b37ad28b | 861 | static __be32 |
1da177e4 LT |
862 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
863 | { | |
864 | DECODE_HEAD; | |
865 | ||
866 | READ_BUF(12); | |
867 | COPYMEM(setclientid->se_verf.data, 8); | |
868 | READ32(setclientid->se_namelen); | |
869 | ||
870 | READ_BUF(setclientid->se_namelen + 8); | |
871 | SAVEMEM(setclientid->se_name, setclientid->se_namelen); | |
872 | READ32(setclientid->se_callback_prog); | |
873 | READ32(setclientid->se_callback_netid_len); | |
874 | ||
875 | READ_BUF(setclientid->se_callback_netid_len + 4); | |
876 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); | |
877 | READ32(setclientid->se_callback_addr_len); | |
878 | ||
879 | READ_BUF(setclientid->se_callback_addr_len + 4); | |
880 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); | |
881 | READ32(setclientid->se_callback_ident); | |
882 | ||
883 | DECODE_TAIL; | |
884 | } | |
885 | ||
b37ad28b | 886 | static __be32 |
1da177e4 LT |
887 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
888 | { | |
889 | DECODE_HEAD; | |
890 | ||
891 | READ_BUF(8 + sizeof(nfs4_verifier)); | |
892 | COPYMEM(&scd_c->sc_clientid, 8); | |
893 | COPYMEM(&scd_c->sc_confirm, sizeof(nfs4_verifier)); | |
894 | ||
895 | DECODE_TAIL; | |
896 | } | |
897 | ||
898 | /* Also used for NVERIFY */ | |
b37ad28b | 899 | static __be32 |
1da177e4 LT |
900 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
901 | { | |
902 | #if 0 | |
903 | struct nfsd4_compoundargs save = { | |
904 | .p = argp->p, | |
905 | .end = argp->end, | |
906 | .rqstp = argp->rqstp, | |
907 | }; | |
908 | u32 ve_bmval[2]; | |
909 | struct iattr ve_iattr; /* request */ | |
910 | struct nfs4_acl *ve_acl; /* request */ | |
911 | #endif | |
912 | DECODE_HEAD; | |
913 | ||
914 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
915 | goto out; | |
916 | ||
917 | /* For convenience's sake, we compare raw xdr'd attributes in | |
918 | * nfsd4_proc_verify; however we still decode here just to return | |
919 | * correct error in case of bad xdr. */ | |
920 | #if 0 | |
921 | status = nfsd4_decode_fattr(ve_bmval, &ve_iattr, &ve_acl); | |
922 | if (status == nfserr_inval) { | |
923 | status = nfserrno(status); | |
924 | goto out; | |
925 | } | |
926 | #endif | |
927 | READ_BUF(4); | |
928 | READ32(verify->ve_attrlen); | |
929 | READ_BUF(verify->ve_attrlen); | |
930 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
931 | ||
932 | DECODE_TAIL; | |
933 | } | |
934 | ||
b37ad28b | 935 | static __be32 |
1da177e4 LT |
936 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
937 | { | |
938 | int avail; | |
939 | int v; | |
940 | int len; | |
941 | DECODE_HEAD; | |
942 | ||
e31a1b66 BH |
943 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
944 | if (status) | |
945 | return status; | |
946 | READ_BUF(16); | |
1da177e4 LT |
947 | READ64(write->wr_offset); |
948 | READ32(write->wr_stable_how); | |
949 | if (write->wr_stable_how > 2) | |
950 | goto xdr_error; | |
951 | READ32(write->wr_buflen); | |
952 | ||
953 | /* Sorry .. no magic macros for this.. * | |
954 | * READ_BUF(write->wr_buflen); | |
955 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
956 | */ | |
957 | avail = (char*)argp->end - (char*)argp->p; | |
958 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
959 | dprintk("NFSD: xdr error (%s:%d)\n", |
960 | __FILE__, __LINE__); | |
1da177e4 LT |
961 | goto xdr_error; |
962 | } | |
3cc03b16 N |
963 | argp->rqstp->rq_vec[0].iov_base = p; |
964 | argp->rqstp->rq_vec[0].iov_len = avail; | |
1da177e4 LT |
965 | v = 0; |
966 | len = write->wr_buflen; | |
3cc03b16 N |
967 | while (len > argp->rqstp->rq_vec[v].iov_len) { |
968 | len -= argp->rqstp->rq_vec[v].iov_len; | |
1da177e4 | 969 | v++; |
3cc03b16 | 970 | argp->rqstp->rq_vec[v].iov_base = page_address(argp->pagelist[0]); |
1da177e4 LT |
971 | argp->pagelist++; |
972 | if (argp->pagelen >= PAGE_SIZE) { | |
3cc03b16 | 973 | argp->rqstp->rq_vec[v].iov_len = PAGE_SIZE; |
1da177e4 LT |
974 | argp->pagelen -= PAGE_SIZE; |
975 | } else { | |
3cc03b16 | 976 | argp->rqstp->rq_vec[v].iov_len = argp->pagelen; |
1da177e4 LT |
977 | argp->pagelen -= len; |
978 | } | |
979 | } | |
2ebbc012 AV |
980 | argp->end = (__be32*) (argp->rqstp->rq_vec[v].iov_base + argp->rqstp->rq_vec[v].iov_len); |
981 | argp->p = (__be32*) (argp->rqstp->rq_vec[v].iov_base + (XDR_QUADLEN(len) << 2)); | |
3cc03b16 | 982 | argp->rqstp->rq_vec[v].iov_len = len; |
1da177e4 LT |
983 | write->wr_vlen = v+1; |
984 | ||
985 | DECODE_TAIL; | |
986 | } | |
987 | ||
b37ad28b | 988 | static __be32 |
1da177e4 LT |
989 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
990 | { | |
991 | DECODE_HEAD; | |
992 | ||
993 | READ_BUF(12); | |
994 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
995 | READ32(rlockowner->rl_owner.len); | |
996 | READ_BUF(rlockowner->rl_owner.len); | |
997 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
998 | ||
60adfc50 AA |
999 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1000 | return nfserr_inval; | |
1da177e4 LT |
1001 | DECODE_TAIL; |
1002 | } | |
1003 | ||
2db134eb AA |
1004 | static __be32 |
1005 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1006 | struct nfsd4_exchange_id *exid) |
2db134eb | 1007 | { |
0733d213 AA |
1008 | int dummy; |
1009 | DECODE_HEAD; | |
1010 | ||
1011 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1012 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1013 | ||
1014 | READ_BUF(4); | |
1015 | READ32(exid->clname.len); | |
1016 | ||
1017 | READ_BUF(exid->clname.len); | |
1018 | SAVEMEM(exid->clname.data, exid->clname.len); | |
1019 | ||
1020 | READ_BUF(4); | |
1021 | READ32(exid->flags); | |
1022 | ||
1023 | /* Ignore state_protect4_a */ | |
1024 | READ_BUF(4); | |
1025 | READ32(exid->spa_how); | |
1026 | switch (exid->spa_how) { | |
1027 | case SP4_NONE: | |
1028 | break; | |
1029 | case SP4_MACH_CRED: | |
1030 | /* spo_must_enforce */ | |
1031 | READ_BUF(4); | |
1032 | READ32(dummy); | |
1033 | READ_BUF(dummy * 4); | |
1034 | p += dummy; | |
1035 | ||
1036 | /* spo_must_allow */ | |
1037 | READ_BUF(4); | |
1038 | READ32(dummy); | |
1039 | READ_BUF(dummy * 4); | |
1040 | p += dummy; | |
1041 | break; | |
1042 | case SP4_SSV: | |
1043 | /* ssp_ops */ | |
1044 | READ_BUF(4); | |
1045 | READ32(dummy); | |
1046 | READ_BUF(dummy * 4); | |
1047 | p += dummy; | |
1048 | ||
1049 | READ_BUF(4); | |
1050 | READ32(dummy); | |
1051 | READ_BUF(dummy * 4); | |
1052 | p += dummy; | |
1053 | ||
1054 | /* ssp_hash_algs<> */ | |
1055 | READ_BUF(4); | |
1056 | READ32(dummy); | |
1057 | READ_BUF(dummy); | |
1058 | p += XDR_QUADLEN(dummy); | |
1059 | ||
1060 | /* ssp_encr_algs<> */ | |
1061 | READ_BUF(4); | |
1062 | READ32(dummy); | |
1063 | READ_BUF(dummy); | |
1064 | p += XDR_QUADLEN(dummy); | |
1065 | ||
1066 | /* ssp_window and ssp_num_gss_handles */ | |
1067 | READ_BUF(8); | |
1068 | READ32(dummy); | |
1069 | READ32(dummy); | |
1070 | break; | |
1071 | default: | |
1072 | goto xdr_error; | |
1073 | } | |
1074 | ||
1075 | /* Ignore Implementation ID */ | |
1076 | READ_BUF(4); /* nfs_impl_id4 array length */ | |
1077 | READ32(dummy); | |
1078 | ||
1079 | if (dummy > 1) | |
1080 | goto xdr_error; | |
1081 | ||
1082 | if (dummy == 1) { | |
1083 | /* nii_domain */ | |
1084 | READ_BUF(4); | |
1085 | READ32(dummy); | |
1086 | READ_BUF(dummy); | |
1087 | p += XDR_QUADLEN(dummy); | |
1088 | ||
1089 | /* nii_name */ | |
1090 | READ_BUF(4); | |
1091 | READ32(dummy); | |
1092 | READ_BUF(dummy); | |
1093 | p += XDR_QUADLEN(dummy); | |
1094 | ||
1095 | /* nii_date */ | |
1096 | READ_BUF(12); | |
1097 | p += 3; | |
1098 | } | |
1099 | DECODE_TAIL; | |
2db134eb AA |
1100 | } |
1101 | ||
1102 | static __be32 | |
1103 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1104 | struct nfsd4_create_session *sess) | |
1105 | { | |
ec6b5d7b AA |
1106 | DECODE_HEAD; |
1107 | ||
1108 | u32 dummy; | |
1109 | char *machine_name; | |
1110 | int i; | |
1111 | int nr_secflavs; | |
1112 | ||
1113 | READ_BUF(16); | |
1114 | COPYMEM(&sess->clientid, 8); | |
1115 | READ32(sess->seqid); | |
1116 | READ32(sess->flags); | |
1117 | ||
1118 | /* Fore channel attrs */ | |
1119 | READ_BUF(28); | |
1120 | READ32(dummy); /* headerpadsz is always 0 */ | |
1121 | READ32(sess->fore_channel.maxreq_sz); | |
1122 | READ32(sess->fore_channel.maxresp_sz); | |
1123 | READ32(sess->fore_channel.maxresp_cached); | |
1124 | READ32(sess->fore_channel.maxops); | |
1125 | READ32(sess->fore_channel.maxreqs); | |
1126 | READ32(sess->fore_channel.nr_rdma_attrs); | |
1127 | if (sess->fore_channel.nr_rdma_attrs == 1) { | |
1128 | READ_BUF(4); | |
1129 | READ32(sess->fore_channel.rdma_attrs); | |
1130 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { | |
1131 | dprintk("Too many fore channel attr bitmaps!\n"); | |
1132 | goto xdr_error; | |
1133 | } | |
1134 | ||
1135 | /* Back channel attrs */ | |
1136 | READ_BUF(28); | |
1137 | READ32(dummy); /* headerpadsz is always 0 */ | |
1138 | READ32(sess->back_channel.maxreq_sz); | |
1139 | READ32(sess->back_channel.maxresp_sz); | |
1140 | READ32(sess->back_channel.maxresp_cached); | |
1141 | READ32(sess->back_channel.maxops); | |
1142 | READ32(sess->back_channel.maxreqs); | |
1143 | READ32(sess->back_channel.nr_rdma_attrs); | |
1144 | if (sess->back_channel.nr_rdma_attrs == 1) { | |
1145 | READ_BUF(4); | |
1146 | READ32(sess->back_channel.rdma_attrs); | |
1147 | } else if (sess->back_channel.nr_rdma_attrs > 1) { | |
1148 | dprintk("Too many back channel attr bitmaps!\n"); | |
1149 | goto xdr_error; | |
1150 | } | |
1151 | ||
1152 | READ_BUF(8); | |
1153 | READ32(sess->callback_prog); | |
1154 | ||
1155 | /* callback_sec_params4 */ | |
1156 | READ32(nr_secflavs); | |
1157 | for (i = 0; i < nr_secflavs; ++i) { | |
1158 | READ_BUF(4); | |
1159 | READ32(dummy); | |
1160 | switch (dummy) { | |
1161 | case RPC_AUTH_NULL: | |
1162 | /* Nothing to read */ | |
1163 | break; | |
1164 | case RPC_AUTH_UNIX: | |
1165 | READ_BUF(8); | |
1166 | /* stamp */ | |
1167 | READ32(dummy); | |
1168 | ||
1169 | /* machine name */ | |
1170 | READ32(dummy); | |
1171 | READ_BUF(dummy); | |
1172 | SAVEMEM(machine_name, dummy); | |
1173 | ||
1174 | /* uid, gid */ | |
1175 | READ_BUF(8); | |
1176 | READ32(sess->uid); | |
1177 | READ32(sess->gid); | |
1178 | ||
1179 | /* more gids */ | |
1180 | READ_BUF(4); | |
1181 | READ32(dummy); | |
1182 | READ_BUF(dummy * 4); | |
1183 | for (i = 0; i < dummy; ++i) | |
1184 | READ32(dummy); | |
1185 | break; | |
1186 | case RPC_AUTH_GSS: | |
1187 | dprintk("RPC_AUTH_GSS callback secflavor " | |
1188 | "not supported!\n"); | |
1189 | READ_BUF(8); | |
1190 | /* gcbp_service */ | |
1191 | READ32(dummy); | |
1192 | /* gcbp_handle_from_server */ | |
1193 | READ32(dummy); | |
1194 | READ_BUF(dummy); | |
1195 | p += XDR_QUADLEN(dummy); | |
1196 | /* gcbp_handle_from_client */ | |
1197 | READ_BUF(4); | |
1198 | READ32(dummy); | |
1199 | READ_BUF(dummy); | |
1200 | p += XDR_QUADLEN(dummy); | |
1201 | break; | |
1202 | default: | |
1203 | dprintk("Illegal callback secflavor\n"); | |
1204 | return nfserr_inval; | |
1205 | } | |
1206 | } | |
1207 | DECODE_TAIL; | |
2db134eb AA |
1208 | } |
1209 | ||
1210 | static __be32 | |
1211 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, | |
1212 | struct nfsd4_destroy_session *destroy_session) | |
1213 | { | |
e10e0cfc BH |
1214 | DECODE_HEAD; |
1215 | READ_BUF(NFS4_MAX_SESSIONID_LEN); | |
1216 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1217 | ||
1218 | DECODE_TAIL; | |
2db134eb AA |
1219 | } |
1220 | ||
1221 | static __be32 | |
1222 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, | |
1223 | struct nfsd4_sequence *seq) | |
1224 | { | |
b85d4c01 BH |
1225 | DECODE_HEAD; |
1226 | ||
1227 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); | |
1228 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1229 | READ32(seq->seqid); | |
1230 | READ32(seq->slotid); | |
1231 | READ32(seq->maxslots); | |
1232 | READ32(seq->cachethis); | |
1233 | ||
1234 | DECODE_TAIL; | |
2db134eb AA |
1235 | } |
1236 | ||
4dc6ec00 BF |
1237 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) |
1238 | { | |
1239 | DECODE_HEAD; | |
1240 | ||
1241 | READ_BUF(4); | |
1242 | READ32(rc->rca_one_fs); | |
1243 | ||
1244 | DECODE_TAIL; | |
1245 | } | |
1246 | ||
347e0ad9 BH |
1247 | static __be32 |
1248 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1249 | { | |
1250 | return nfs_ok; | |
1251 | } | |
1252 | ||
3c375c6f BH |
1253 | static __be32 |
1254 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1255 | { | |
1e685ec2 | 1256 | return nfserr_notsupp; |
3c375c6f BH |
1257 | } |
1258 | ||
347e0ad9 BH |
1259 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1260 | ||
1261 | static nfsd4_dec nfsd4_dec_ops[] = { | |
ad1060c8 BF |
1262 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1263 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1264 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1265 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1266 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1267 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1268 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1269 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1270 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1271 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1272 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1273 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1274 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1275 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1276 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1277 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1278 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1279 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1280 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1281 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
a1c8c4d1 | 1282 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_noop, |
ad1060c8 BF |
1283 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1284 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1285 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1286 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1287 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1288 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1289 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1290 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1291 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1292 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1293 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1294 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1295 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1296 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1297 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1298 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
347e0ad9 BH |
1299 | }; |
1300 | ||
2db134eb | 1301 | static nfsd4_dec nfsd41_dec_ops[] = { |
9064caae RD |
1302 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1303 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1304 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1305 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1306 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1307 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1308 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1309 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1310 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1311 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1312 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1313 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1314 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1315 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1316 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1317 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1318 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1319 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1320 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1321 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
1322 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1323 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1324 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1325 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1326 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1327 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1328 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1329 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1330 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1331 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1332 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1333 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1334 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1335 | [OP_SETCLIENTID_CONFIRM]= (nfsd4_dec)nfsd4_decode_notsupp, | |
1336 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1337 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1338 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_notsupp, | |
2db134eb AA |
1339 | |
1340 | /* new operations for NFSv4.1 */ | |
9064caae RD |
1341 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_notsupp, |
1342 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_notsupp, | |
1343 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, | |
1344 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
1345 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
1346 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1347 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1348 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1349 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1350 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1351 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1352 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1353 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1354 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, | |
1355 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1356 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1357 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1358 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp, | |
4dc6ec00 | 1359 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
2db134eb AA |
1360 | }; |
1361 | ||
f2feb96b BH |
1362 | struct nfsd4_minorversion_ops { |
1363 | nfsd4_dec *decoders; | |
1364 | int nops; | |
1365 | }; | |
1366 | ||
1367 | static struct nfsd4_minorversion_ops nfsd4_minorversion[] = { | |
ad1060c8 | 1368 | [0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) }, |
2db134eb | 1369 | [1] = { nfsd41_dec_ops, ARRAY_SIZE(nfsd41_dec_ops) }, |
f2feb96b BH |
1370 | }; |
1371 | ||
b37ad28b | 1372 | static __be32 |
1da177e4 LT |
1373 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1374 | { | |
1375 | DECODE_HEAD; | |
1376 | struct nfsd4_op *op; | |
f2feb96b | 1377 | struct nfsd4_minorversion_ops *ops; |
1da177e4 LT |
1378 | int i; |
1379 | ||
1380 | /* | |
1381 | * XXX: According to spec, we should check the tag | |
1382 | * for UTF-8 compliance. I'm postponing this for | |
1383 | * now because it seems that some clients do use | |
1384 | * binary tags. | |
1385 | */ | |
1386 | READ_BUF(4); | |
1387 | READ32(argp->taglen); | |
1388 | READ_BUF(argp->taglen + 8); | |
1389 | SAVEMEM(argp->tag, argp->taglen); | |
1390 | READ32(argp->minorversion); | |
1391 | READ32(argp->opcnt); | |
1392 | ||
1393 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1394 | goto xdr_error; | |
1395 | if (argp->opcnt > 100) | |
1396 | goto xdr_error; | |
1397 | ||
e8c96f8c | 1398 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
1da177e4 LT |
1399 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1400 | if (!argp->ops) { | |
1401 | argp->ops = argp->iops; | |
817cb9d4 | 1402 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1403 | goto xdr_error; |
1404 | } | |
1405 | } | |
1406 | ||
f2feb96b | 1407 | if (argp->minorversion >= ARRAY_SIZE(nfsd4_minorversion)) |
30cff1ff BH |
1408 | argp->opcnt = 0; |
1409 | ||
f2feb96b | 1410 | ops = &nfsd4_minorversion[argp->minorversion]; |
1da177e4 LT |
1411 | for (i = 0; i < argp->opcnt; i++) { |
1412 | op = &argp->ops[i]; | |
1413 | op->replay = NULL; | |
1414 | ||
1415 | /* | |
1416 | * We can't use READ_BUF() here because we need to handle | |
1417 | * a missing opcode as an OP_WRITE + 1. So we need to check | |
1418 | * to see if we're truly at the end of our buffer or if there | |
1419 | * is another page we need to flip to. | |
1420 | */ | |
1421 | ||
1422 | if (argp->p == argp->end) { | |
1423 | if (argp->pagelen < 4) { | |
1424 | /* There isn't an opcode still on the wire */ | |
1425 | op->opnum = OP_WRITE + 1; | |
1426 | op->status = nfserr_bad_xdr; | |
1427 | argp->opcnt = i+1; | |
1428 | break; | |
1429 | } | |
1430 | ||
1431 | /* | |
1432 | * False alarm. We just hit a page boundary, but there | |
1433 | * is still data available. Move pointer across page | |
1434 | * boundary. *snip from READ_BUF* | |
1435 | */ | |
1436 | argp->p = page_address(argp->pagelist[0]); | |
1437 | argp->pagelist++; | |
1438 | if (argp->pagelen < PAGE_SIZE) { | |
2bc3c117 | 1439 | argp->end = argp->p + (argp->pagelen>>2); |
1da177e4 LT |
1440 | argp->pagelen = 0; |
1441 | } else { | |
2bc3c117 | 1442 | argp->end = argp->p + (PAGE_SIZE>>2); |
1da177e4 LT |
1443 | argp->pagelen -= PAGE_SIZE; |
1444 | } | |
1445 | } | |
1446 | op->opnum = ntohl(*argp->p++); | |
1447 | ||
de3cab79 | 1448 | if (op->opnum >= FIRST_NFS4_OP && op->opnum <= LAST_NFS4_OP) |
f2feb96b | 1449 | op->status = ops->decoders[op->opnum](argp, &op->u); |
347e0ad9 | 1450 | else { |
1da177e4 LT |
1451 | op->opnum = OP_ILLEGAL; |
1452 | op->status = nfserr_op_illegal; | |
1da177e4 LT |
1453 | } |
1454 | ||
1455 | if (op->status) { | |
1456 | argp->opcnt = i+1; | |
1457 | break; | |
1458 | } | |
1459 | } | |
1460 | ||
1461 | DECODE_TAIL; | |
1462 | } | |
1da177e4 | 1463 | |
1da177e4 LT |
1464 | #define WRITE32(n) *p++ = htonl(n) |
1465 | #define WRITE64(n) do { \ | |
1466 | *p++ = htonl((u32)((n) >> 32)); \ | |
1467 | *p++ = htonl((u32)(n)); \ | |
1468 | } while (0) | |
5108b276 | 1469 | #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \ |
1da177e4 LT |
1470 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ |
1471 | memcpy(p, ptr, nbytes); \ | |
1472 | p += XDR_QUADLEN(nbytes); \ | |
5108b276 | 1473 | }} while (0) |
c654b8a9 BF |
1474 | |
1475 | static void write32(__be32 **p, u32 n) | |
1476 | { | |
1477 | *(*p)++ = n; | |
1478 | } | |
1479 | ||
1480 | static void write64(__be32 **p, u64 n) | |
1481 | { | |
1482 | write32(p, (u32)(n >> 32)); | |
1483 | write32(p, (u32)n); | |
1484 | } | |
1485 | ||
1486 | static void write_change(__be32 **p, struct kstat *stat, struct inode *inode) | |
1487 | { | |
1488 | if (IS_I_VERSION(inode)) { | |
1489 | write64(p, inode->i_version); | |
1490 | } else { | |
1491 | write32(p, stat->ctime.tv_sec); | |
1492 | write32(p, stat->ctime.tv_nsec); | |
1493 | } | |
1494 | } | |
1495 | ||
1496 | static void write_cinfo(__be32 **p, struct nfsd4_change_info *c) | |
1497 | { | |
1498 | write32(p, c->atomic); | |
1499 | if (c->change_supported) { | |
1500 | write64(p, c->before_change); | |
1501 | write64(p, c->after_change); | |
1502 | } else { | |
1503 | write32(p, c->before_ctime_sec); | |
1504 | write32(p, c->before_ctime_nsec); | |
1505 | write32(p, c->after_ctime_sec); | |
1506 | write32(p, c->after_ctime_nsec); | |
1507 | } | |
1508 | } | |
1da177e4 LT |
1509 | |
1510 | #define RESERVE_SPACE(nbytes) do { \ | |
1511 | p = resp->p; \ | |
1512 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ | |
1513 | } while (0) | |
1514 | #define ADJUST_ARGS() resp->p = p | |
1515 | ||
1516 | /* | |
1517 | * Header routine to setup seqid operation replay cache | |
1518 | */ | |
1519 | #define ENCODE_SEQID_OP_HEAD \ | |
2ebbc012 | 1520 | __be32 *save; \ |
1da177e4 LT |
1521 | \ |
1522 | save = resp->p; | |
1523 | ||
1524 | /* | |
7fb64cee N |
1525 | * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This |
1526 | * is where sequence id's are incremented, and the replay cache is filled. | |
1527 | * Note that we increment sequence id's here, at the last moment, so we're sure | |
1528 | * we know whether the error to be returned is a sequence id mutating error. | |
1da177e4 LT |
1529 | */ |
1530 | ||
1531 | #define ENCODE_SEQID_OP_TAIL(stateowner) do { \ | |
1532 | if (seqid_mutating_err(nfserr) && stateowner) { \ | |
bd9aac52 | 1533 | stateowner->so_seqid++; \ |
1da177e4 LT |
1534 | stateowner->so_replay.rp_status = nfserr; \ |
1535 | stateowner->so_replay.rp_buflen = \ | |
1536 | (((char *)(resp)->p - (char *)save)); \ | |
1537 | memcpy(stateowner->so_replay.rp_buf, save, \ | |
1538 | stateowner->so_replay.rp_buflen); \ | |
1539 | } } while (0); | |
1540 | ||
81c3f413 | 1541 | /* Encode as an array of strings the string given with components |
3ad2f3fb | 1542 | * separated @sep. |
81c3f413 | 1543 | */ |
b37ad28b | 1544 | static __be32 nfsd4_encode_components(char sep, char *components, |
2ebbc012 | 1545 | __be32 **pp, int *buflen) |
81c3f413 | 1546 | { |
2ebbc012 AV |
1547 | __be32 *p = *pp; |
1548 | __be32 *countp = p; | |
81c3f413 BF |
1549 | int strlen, count=0; |
1550 | char *str, *end; | |
1551 | ||
1552 | dprintk("nfsd4_encode_components(%s)\n", components); | |
1553 | if ((*buflen -= 4) < 0) | |
1554 | return nfserr_resource; | |
1555 | WRITE32(0); /* We will fill this in with @count later */ | |
1556 | end = str = components; | |
1557 | while (*end) { | |
1558 | for (; *end && (*end != sep); end++) | |
1559 | ; /* Point to end of component */ | |
1560 | strlen = end - str; | |
1561 | if (strlen) { | |
1562 | if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0) | |
1563 | return nfserr_resource; | |
1564 | WRITE32(strlen); | |
1565 | WRITEMEM(str, strlen); | |
1566 | count++; | |
1567 | } | |
1568 | else | |
1569 | end++; | |
1570 | str = end; | |
1571 | } | |
1572 | *pp = p; | |
1573 | p = countp; | |
1574 | WRITE32(count); | |
1575 | return 0; | |
1576 | } | |
1577 | ||
1578 | /* | |
1579 | * encode a location element of a fs_locations structure | |
1580 | */ | |
b37ad28b | 1581 | static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location, |
2ebbc012 | 1582 | __be32 **pp, int *buflen) |
81c3f413 | 1583 | { |
b37ad28b | 1584 | __be32 status; |
2ebbc012 | 1585 | __be32 *p = *pp; |
81c3f413 BF |
1586 | |
1587 | status = nfsd4_encode_components(':', location->hosts, &p, buflen); | |
1588 | if (status) | |
1589 | return status; | |
1590 | status = nfsd4_encode_components('/', location->path, &p, buflen); | |
1591 | if (status) | |
1592 | return status; | |
1593 | *pp = p; | |
1594 | return 0; | |
1595 | } | |
1596 | ||
1597 | /* | |
1598 | * Return the path to an export point in the pseudo filesystem namespace | |
1599 | * Returned string is safe to use as long as the caller holds a reference | |
1600 | * to @exp. | |
1601 | */ | |
b37ad28b | 1602 | static char *nfsd4_path(struct svc_rqst *rqstp, struct svc_export *exp, __be32 *stat) |
81c3f413 BF |
1603 | { |
1604 | struct svc_fh tmp_fh; | |
2671a4bf TM |
1605 | char *path = NULL, *rootpath; |
1606 | size_t rootlen; | |
81c3f413 BF |
1607 | |
1608 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
df547efb | 1609 | *stat = exp_pseudoroot(rqstp, &tmp_fh); |
cc45f017 AV |
1610 | if (*stat) |
1611 | return NULL; | |
54775491 | 1612 | rootpath = tmp_fh.fh_export->ex_pathname; |
81c3f413 | 1613 | |
54775491 | 1614 | path = exp->ex_pathname; |
81c3f413 | 1615 | |
2671a4bf TM |
1616 | rootlen = strlen(rootpath); |
1617 | if (strncmp(path, rootpath, rootlen)) { | |
817cb9d4 | 1618 | dprintk("nfsd: fs_locations failed;" |
81c3f413 | 1619 | "%s is not contained in %s\n", path, rootpath); |
cc45f017 | 1620 | *stat = nfserr_notsupp; |
2671a4bf TM |
1621 | path = NULL; |
1622 | goto out; | |
81c3f413 | 1623 | } |
2671a4bf TM |
1624 | path += rootlen; |
1625 | out: | |
1626 | fh_put(&tmp_fh); | |
1627 | return path; | |
81c3f413 BF |
1628 | } |
1629 | ||
1630 | /* | |
1631 | * encode a fs_locations structure | |
1632 | */ | |
b37ad28b | 1633 | static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp, |
81c3f413 | 1634 | struct svc_export *exp, |
2ebbc012 | 1635 | __be32 **pp, int *buflen) |
81c3f413 | 1636 | { |
b37ad28b | 1637 | __be32 status; |
cc45f017 | 1638 | int i; |
2ebbc012 | 1639 | __be32 *p = *pp; |
81c3f413 | 1640 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
cc45f017 | 1641 | char *root = nfsd4_path(rqstp, exp, &status); |
81c3f413 | 1642 | |
cc45f017 AV |
1643 | if (status) |
1644 | return status; | |
81c3f413 BF |
1645 | status = nfsd4_encode_components('/', root, &p, buflen); |
1646 | if (status) | |
1647 | return status; | |
1648 | if ((*buflen -= 4) < 0) | |
1649 | return nfserr_resource; | |
1650 | WRITE32(fslocs->locations_count); | |
1651 | for (i=0; i<fslocs->locations_count; i++) { | |
1652 | status = nfsd4_encode_fs_location4(&fslocs->locations[i], | |
1653 | &p, buflen); | |
1654 | if (status) | |
1655 | return status; | |
1656 | } | |
1657 | *pp = p; | |
1658 | return 0; | |
1659 | } | |
1da177e4 LT |
1660 | |
1661 | static u32 nfs4_ftypes[16] = { | |
1662 | NF4BAD, NF4FIFO, NF4CHR, NF4BAD, | |
1663 | NF4DIR, NF4BAD, NF4BLK, NF4BAD, | |
1664 | NF4REG, NF4BAD, NF4LNK, NF4BAD, | |
1665 | NF4SOCK, NF4BAD, NF4LNK, NF4BAD, | |
1666 | }; | |
1667 | ||
b37ad28b | 1668 | static __be32 |
1da177e4 | 1669 | nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
2ebbc012 | 1670 | __be32 **p, int *buflen) |
1da177e4 LT |
1671 | { |
1672 | int status; | |
1673 | ||
1674 | if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) | |
1675 | return nfserr_resource; | |
1676 | if (whotype != NFS4_ACL_WHO_NAMED) | |
1677 | status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); | |
1678 | else if (group) | |
1679 | status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1680 | else | |
1681 | status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1682 | if (status < 0) | |
1683 | return nfserrno(status); | |
1684 | *p = xdr_encode_opaque(*p, NULL, status); | |
1685 | *buflen -= (XDR_QUADLEN(status) << 2) + 4; | |
1686 | BUG_ON(*buflen < 0); | |
1687 | return 0; | |
1688 | } | |
1689 | ||
b37ad28b | 1690 | static inline __be32 |
2ebbc012 | 1691 | nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, __be32 **p, int *buflen) |
1da177e4 LT |
1692 | { |
1693 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen); | |
1694 | } | |
1695 | ||
b37ad28b | 1696 | static inline __be32 |
2ebbc012 | 1697 | nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, __be32 **p, int *buflen) |
1da177e4 LT |
1698 | { |
1699 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen); | |
1700 | } | |
1701 | ||
b37ad28b | 1702 | static inline __be32 |
1da177e4 | 1703 | nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
2ebbc012 | 1704 | __be32 **p, int *buflen) |
1da177e4 LT |
1705 | { |
1706 | return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen); | |
1707 | } | |
1708 | ||
42ca0993 BF |
1709 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
1710 | FATTR4_WORD0_RDATTR_ERROR) | |
1711 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
1712 | ||
b37ad28b | 1713 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
42ca0993 BF |
1714 | { |
1715 | /* As per referral draft: */ | |
1716 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
1717 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
1718 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
1719 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
1720 | *rdattr_err = NFSERR_MOVED; | |
1721 | else | |
1722 | return nfserr_moved; | |
1723 | } | |
1724 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
1725 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
1726 | return 0; | |
1727 | } | |
1da177e4 LT |
1728 | |
1729 | /* | |
1730 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
1731 | * ourselves. | |
1732 | * | |
1733 | * @countp is the buffer size in _words_; upon successful return this becomes | |
1734 | * replaced with the number of words written. | |
1735 | */ | |
b37ad28b | 1736 | __be32 |
1da177e4 | 1737 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, |
2ebbc012 | 1738 | struct dentry *dentry, __be32 *buffer, int *countp, u32 *bmval, |
406a7ea9 | 1739 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
1740 | { |
1741 | u32 bmval0 = bmval[0]; | |
1742 | u32 bmval1 = bmval[1]; | |
7e705706 | 1743 | u32 bmval2 = bmval[2]; |
1da177e4 LT |
1744 | struct kstat stat; |
1745 | struct svc_fh tempfh; | |
1746 | struct kstatfs statfs; | |
1747 | int buflen = *countp << 2; | |
2ebbc012 | 1748 | __be32 *attrlenp; |
1da177e4 LT |
1749 | u32 dummy; |
1750 | u64 dummy64; | |
42ca0993 | 1751 | u32 rdattr_err = 0; |
2ebbc012 | 1752 | __be32 *p = buffer; |
b37ad28b | 1753 | __be32 status; |
b8dd7b9a | 1754 | int err; |
1da177e4 LT |
1755 | int aclsupport = 0; |
1756 | struct nfs4_acl *acl = NULL; | |
7e705706 AA |
1757 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
1758 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
1759 | struct path path = { |
1760 | .mnt = exp->ex_path.mnt, | |
1761 | .dentry = dentry, | |
1762 | }; | |
1da177e4 LT |
1763 | |
1764 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
7e705706 AA |
1765 | BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); |
1766 | BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); | |
1767 | BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); | |
1da177e4 | 1768 | |
42ca0993 | 1769 | if (exp->ex_fslocs.migrated) { |
7e705706 | 1770 | BUG_ON(bmval[2]); |
42ca0993 BF |
1771 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); |
1772 | if (status) | |
1773 | goto out; | |
1774 | } | |
1775 | ||
54775491 | 1776 | err = vfs_getattr(exp->ex_path.mnt, dentry, &stat); |
b8dd7b9a | 1777 | if (err) |
1da177e4 | 1778 | goto out_nfserr; |
a16e92ed BF |
1779 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | |
1780 | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
1781 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
1782 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 1783 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 1784 | if (err) |
1da177e4 LT |
1785 | goto out_nfserr; |
1786 | } | |
1787 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
1788 | fh_init(&tempfh, NFS4_FHSIZE); | |
1789 | status = fh_compose(&tempfh, exp, dentry, NULL); | |
1790 | if (status) | |
1791 | goto out; | |
1792 | fhp = &tempfh; | |
1793 | } | |
1794 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
1795 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
b8dd7b9a AV |
1796 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
1797 | aclsupport = (err == 0); | |
1da177e4 | 1798 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 1799 | if (err == -EOPNOTSUPP) |
1da177e4 | 1800 | bmval0 &= ~FATTR4_WORD0_ACL; |
b8dd7b9a | 1801 | else if (err == -EINVAL) { |
1da177e4 LT |
1802 | status = nfserr_attrnotsupp; |
1803 | goto out; | |
b8dd7b9a | 1804 | } else if (err != 0) |
1da177e4 LT |
1805 | goto out_nfserr; |
1806 | } | |
1807 | } | |
1808 | if ((buflen -= 16) < 0) | |
1809 | goto out_resource; | |
1810 | ||
7e705706 AA |
1811 | if (unlikely(bmval2)) { |
1812 | WRITE32(3); | |
1813 | WRITE32(bmval0); | |
1814 | WRITE32(bmval1); | |
1815 | WRITE32(bmval2); | |
1816 | } else if (likely(bmval1)) { | |
1817 | WRITE32(2); | |
1818 | WRITE32(bmval0); | |
1819 | WRITE32(bmval1); | |
1820 | } else { | |
1821 | WRITE32(1); | |
1822 | WRITE32(bmval0); | |
1823 | } | |
1da177e4 LT |
1824 | attrlenp = p++; /* to be backfilled later */ |
1825 | ||
1826 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
7e705706 AA |
1827 | u32 word0 = nfsd_suppattrs0(minorversion); |
1828 | u32 word1 = nfsd_suppattrs1(minorversion); | |
1829 | u32 word2 = nfsd_suppattrs2(minorversion); | |
1830 | ||
1da177e4 LT |
1831 | if ((buflen -= 12) < 0) |
1832 | goto out_resource; | |
42ca0993 BF |
1833 | if (!aclsupport) |
1834 | word0 &= ~FATTR4_WORD0_ACL; | |
7e705706 AA |
1835 | if (!word2) { |
1836 | WRITE32(2); | |
1837 | WRITE32(word0); | |
1838 | WRITE32(word1); | |
1839 | } else { | |
1840 | WRITE32(3); | |
1841 | WRITE32(word0); | |
1842 | WRITE32(word1); | |
1843 | WRITE32(word2); | |
1844 | } | |
1da177e4 LT |
1845 | } |
1846 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
1847 | if ((buflen -= 4) < 0) | |
1848 | goto out_resource; | |
1849 | dummy = nfs4_ftypes[(stat.mode & S_IFMT) >> 12]; | |
1850 | if (dummy == NF4BAD) | |
1851 | goto out_serverfault; | |
1852 | WRITE32(dummy); | |
1853 | } | |
1854 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
1855 | if ((buflen -= 4) < 0) | |
1856 | goto out_resource; | |
49640001 | 1857 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
e34ac862 | 1858 | WRITE32(NFS4_FH_PERSISTENT); |
49640001 | 1859 | else |
e34ac862 | 1860 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
1da177e4 LT |
1861 | } |
1862 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
1da177e4 LT |
1863 | if ((buflen -= 8) < 0) |
1864 | goto out_resource; | |
c654b8a9 | 1865 | write_change(&p, &stat, dentry->d_inode); |
1da177e4 LT |
1866 | } |
1867 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
1868 | if ((buflen -= 8) < 0) | |
1869 | goto out_resource; | |
1870 | WRITE64(stat.size); | |
1871 | } | |
1872 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
1873 | if ((buflen -= 4) < 0) | |
1874 | goto out_resource; | |
1875 | WRITE32(1); | |
1876 | } | |
1877 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
1878 | if ((buflen -= 4) < 0) | |
1879 | goto out_resource; | |
1880 | WRITE32(1); | |
1881 | } | |
1882 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
1883 | if ((buflen -= 4) < 0) | |
1884 | goto out_resource; | |
1885 | WRITE32(0); | |
1886 | } | |
1887 | if (bmval0 & FATTR4_WORD0_FSID) { | |
1888 | if ((buflen -= 16) < 0) | |
1889 | goto out_resource; | |
42ca0993 BF |
1890 | if (exp->ex_fslocs.migrated) { |
1891 | WRITE64(NFS4_REFERRAL_FSID_MAJOR); | |
1892 | WRITE64(NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
1893 | } else switch(fsid_source(fhp)) { |
1894 | case FSIDSOURCE_FSID: | |
1da177e4 LT |
1895 | WRITE64((u64)exp->ex_fsid); |
1896 | WRITE64((u64)0); | |
af6a4e28 N |
1897 | break; |
1898 | case FSIDSOURCE_DEV: | |
1da177e4 LT |
1899 | WRITE32(0); |
1900 | WRITE32(MAJOR(stat.dev)); | |
1901 | WRITE32(0); | |
1902 | WRITE32(MINOR(stat.dev)); | |
af6a4e28 N |
1903 | break; |
1904 | case FSIDSOURCE_UUID: | |
1905 | WRITEMEM(exp->ex_uuid, 16); | |
1906 | break; | |
1da177e4 LT |
1907 | } |
1908 | } | |
1909 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
1910 | if ((buflen -= 4) < 0) | |
1911 | goto out_resource; | |
1912 | WRITE32(0); | |
1913 | } | |
1914 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
1915 | if ((buflen -= 4) < 0) | |
1916 | goto out_resource; | |
cf07d2ea | 1917 | WRITE32(nfsd4_lease); |
1da177e4 LT |
1918 | } |
1919 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
1920 | if ((buflen -= 4) < 0) | |
1921 | goto out_resource; | |
42ca0993 | 1922 | WRITE32(rdattr_err); |
1da177e4 LT |
1923 | } |
1924 | if (bmval0 & FATTR4_WORD0_ACL) { | |
1925 | struct nfs4_ace *ace; | |
1da177e4 LT |
1926 | |
1927 | if (acl == NULL) { | |
1928 | if ((buflen -= 4) < 0) | |
1929 | goto out_resource; | |
1930 | ||
1931 | WRITE32(0); | |
1932 | goto out_acl; | |
1933 | } | |
1934 | if ((buflen -= 4) < 0) | |
1935 | goto out_resource; | |
1936 | WRITE32(acl->naces); | |
1937 | ||
28e05dd8 | 1938 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
1da177e4 LT |
1939 | if ((buflen -= 4*3) < 0) |
1940 | goto out_resource; | |
1941 | WRITE32(ace->type); | |
1942 | WRITE32(ace->flag); | |
1943 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); | |
1944 | status = nfsd4_encode_aclname(rqstp, ace->whotype, | |
1945 | ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP, | |
1946 | &p, &buflen); | |
1947 | if (status == nfserr_resource) | |
1948 | goto out_resource; | |
1949 | if (status) | |
1950 | goto out; | |
1951 | } | |
1952 | } | |
1953 | out_acl: | |
1954 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
1955 | if ((buflen -= 4) < 0) | |
1956 | goto out_resource; | |
1957 | WRITE32(aclsupport ? | |
1958 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); | |
1959 | } | |
1960 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
1961 | if ((buflen -= 4) < 0) | |
1962 | goto out_resource; | |
1963 | WRITE32(1); | |
1964 | } | |
1965 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
1966 | if ((buflen -= 4) < 0) | |
1967 | goto out_resource; | |
1968 | WRITE32(1); | |
1969 | } | |
1970 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
1971 | if ((buflen -= 4) < 0) | |
1972 | goto out_resource; | |
1973 | WRITE32(1); | |
1974 | } | |
1975 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
1976 | if ((buflen -= 4) < 0) | |
1977 | goto out_resource; | |
1978 | WRITE32(1); | |
1979 | } | |
1980 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
1981 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; | |
1982 | if (buflen < 0) | |
1983 | goto out_resource; | |
1984 | WRITE32(fhp->fh_handle.fh_size); | |
1985 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); | |
1986 | } | |
1987 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
1988 | if ((buflen -= 8) < 0) | |
1989 | goto out_resource; | |
40ee5dc6 | 1990 | WRITE64(stat.ino); |
1da177e4 LT |
1991 | } |
1992 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
1993 | if ((buflen -= 8) < 0) | |
1994 | goto out_resource; | |
1995 | WRITE64((u64) statfs.f_ffree); | |
1996 | } | |
1997 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
1998 | if ((buflen -= 8) < 0) | |
1999 | goto out_resource; | |
2000 | WRITE64((u64) statfs.f_ffree); | |
2001 | } | |
2002 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
2003 | if ((buflen -= 8) < 0) | |
2004 | goto out_resource; | |
2005 | WRITE64((u64) statfs.f_files); | |
2006 | } | |
81c3f413 BF |
2007 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
2008 | status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); | |
2009 | if (status == nfserr_resource) | |
2010 | goto out_resource; | |
2011 | if (status) | |
2012 | goto out; | |
2013 | } | |
1da177e4 LT |
2014 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
2015 | if ((buflen -= 4) < 0) | |
2016 | goto out_resource; | |
2017 | WRITE32(1); | |
2018 | } | |
2019 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
2020 | if ((buflen -= 8) < 0) | |
2021 | goto out_resource; | |
2022 | WRITE64(~(u64)0); | |
2023 | } | |
2024 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
2025 | if ((buflen -= 4) < 0) | |
2026 | goto out_resource; | |
2027 | WRITE32(255); | |
2028 | } | |
2029 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
2030 | if ((buflen -= 4) < 0) | |
2031 | goto out_resource; | |
a16e92ed | 2032 | WRITE32(statfs.f_namelen); |
1da177e4 LT |
2033 | } |
2034 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
2035 | if ((buflen -= 8) < 0) | |
2036 | goto out_resource; | |
7adae489 | 2037 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2038 | } |
2039 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
2040 | if ((buflen -= 8) < 0) | |
2041 | goto out_resource; | |
7adae489 | 2042 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2043 | } |
2044 | if (bmval1 & FATTR4_WORD1_MODE) { | |
2045 | if ((buflen -= 4) < 0) | |
2046 | goto out_resource; | |
2047 | WRITE32(stat.mode & S_IALLUGO); | |
2048 | } | |
2049 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
2050 | if ((buflen -= 4) < 0) | |
2051 | goto out_resource; | |
2052 | WRITE32(1); | |
2053 | } | |
2054 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
2055 | if ((buflen -= 4) < 0) | |
2056 | goto out_resource; | |
2057 | WRITE32(stat.nlink); | |
2058 | } | |
2059 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
2060 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); | |
2061 | if (status == nfserr_resource) | |
2062 | goto out_resource; | |
2063 | if (status) | |
2064 | goto out; | |
2065 | } | |
2066 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
2067 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); | |
2068 | if (status == nfserr_resource) | |
2069 | goto out_resource; | |
2070 | if (status) | |
2071 | goto out; | |
2072 | } | |
2073 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
2074 | if ((buflen -= 8) < 0) | |
2075 | goto out_resource; | |
2076 | WRITE32((u32) MAJOR(stat.rdev)); | |
2077 | WRITE32((u32) MINOR(stat.rdev)); | |
2078 | } | |
2079 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
2080 | if ((buflen -= 8) < 0) | |
2081 | goto out_resource; | |
2082 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
2083 | WRITE64(dummy64); | |
2084 | } | |
2085 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
2086 | if ((buflen -= 8) < 0) | |
2087 | goto out_resource; | |
2088 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
2089 | WRITE64(dummy64); | |
2090 | } | |
2091 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
2092 | if ((buflen -= 8) < 0) | |
2093 | goto out_resource; | |
2094 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
2095 | WRITE64(dummy64); | |
2096 | } | |
2097 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
2098 | if ((buflen -= 8) < 0) | |
2099 | goto out_resource; | |
2100 | dummy64 = (u64)stat.blocks << 9; | |
2101 | WRITE64(dummy64); | |
2102 | } | |
2103 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
2104 | if ((buflen -= 12) < 0) | |
2105 | goto out_resource; | |
2106 | WRITE32(0); | |
2107 | WRITE32(stat.atime.tv_sec); | |
2108 | WRITE32(stat.atime.tv_nsec); | |
2109 | } | |
2110 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
2111 | if ((buflen -= 12) < 0) | |
2112 | goto out_resource; | |
2113 | WRITE32(0); | |
2114 | WRITE32(1); | |
2115 | WRITE32(0); | |
2116 | } | |
2117 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
2118 | if ((buflen -= 12) < 0) | |
2119 | goto out_resource; | |
2120 | WRITE32(0); | |
2121 | WRITE32(stat.ctime.tv_sec); | |
2122 | WRITE32(stat.ctime.tv_nsec); | |
2123 | } | |
2124 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
2125 | if ((buflen -= 12) < 0) | |
2126 | goto out_resource; | |
2127 | WRITE32(0); | |
2128 | WRITE32(stat.mtime.tv_sec); | |
2129 | WRITE32(stat.mtime.tv_nsec); | |
2130 | } | |
2131 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
1da177e4 LT |
2132 | if ((buflen -= 8) < 0) |
2133 | goto out_resource; | |
406a7ea9 FF |
2134 | /* |
2135 | * Get parent's attributes if not ignoring crossmount | |
2136 | * and this is the root of a cross-mounted filesystem. | |
2137 | */ | |
2138 | if (ignore_crossmnt == 0 && | |
462d6057 AV |
2139 | dentry == exp->ex_path.mnt->mnt_root) { |
2140 | struct path path = exp->ex_path; | |
2141 | path_get(&path); | |
2142 | while (follow_up(&path)) { | |
2143 | if (path.dentry != path.mnt->mnt_root) | |
2144 | break; | |
2145 | } | |
2146 | err = vfs_getattr(path.mnt, path.dentry, &stat); | |
2147 | path_put(&path); | |
40ee5dc6 PS |
2148 | if (err) |
2149 | goto out_nfserr; | |
2150 | } | |
2151 | WRITE64(stat.ino); | |
1da177e4 | 2152 | } |
8c18f205 BH |
2153 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
2154 | WRITE32(3); | |
2155 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0); | |
2156 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1); | |
2157 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2); | |
2158 | } | |
7e705706 | 2159 | |
1da177e4 LT |
2160 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); |
2161 | *countp = p - buffer; | |
2162 | status = nfs_ok; | |
2163 | ||
2164 | out: | |
28e05dd8 | 2165 | kfree(acl); |
1da177e4 LT |
2166 | if (fhp == &tempfh) |
2167 | fh_put(&tempfh); | |
2168 | return status; | |
2169 | out_nfserr: | |
b8dd7b9a | 2170 | status = nfserrno(err); |
1da177e4 LT |
2171 | goto out; |
2172 | out_resource: | |
2173 | *countp = 0; | |
2174 | status = nfserr_resource; | |
2175 | goto out; | |
2176 | out_serverfault: | |
2177 | status = nfserr_serverfault; | |
2178 | goto out; | |
2179 | } | |
2180 | ||
c0ce6ec8 BF |
2181 | static inline int attributes_need_mount(u32 *bmval) |
2182 | { | |
2183 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2184 | return 1; | |
2185 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2186 | return 1; | |
2187 | return 0; | |
2188 | } | |
2189 | ||
b37ad28b | 2190 | static __be32 |
1da177e4 | 2191 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, |
2ebbc012 | 2192 | const char *name, int namlen, __be32 *p, int *buflen) |
1da177e4 LT |
2193 | { |
2194 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2195 | struct dentry *dentry; | |
b37ad28b | 2196 | __be32 nfserr; |
406a7ea9 | 2197 | int ignore_crossmnt = 0; |
1da177e4 LT |
2198 | |
2199 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
2200 | if (IS_ERR(dentry)) | |
2201 | return nfserrno(PTR_ERR(dentry)); | |
b2c0cea6 BF |
2202 | if (!dentry->d_inode) { |
2203 | /* | |
2204 | * nfsd_buffered_readdir drops the i_mutex between | |
2205 | * readdir and calling this callback, leaving a window | |
2206 | * where this directory entry could have gone away. | |
2207 | */ | |
2208 | dput(dentry); | |
2209 | return nfserr_noent; | |
2210 | } | |
1da177e4 LT |
2211 | |
2212 | exp_get(exp); | |
406a7ea9 FF |
2213 | /* |
2214 | * In the case of a mountpoint, the client may be asking for | |
2215 | * attributes that are only properties of the underlying filesystem | |
2216 | * as opposed to the cross-mounted file system. In such a case, | |
2217 | * we will not follow the cross mount and will fill the attribtutes | |
2218 | * directly from the mountpoint dentry. | |
2219 | */ | |
3227fa41 | 2220 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
2221 | int err; |
2222 | ||
3227fa41 BF |
2223 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
2224 | && !attributes_need_mount(cd->rd_bmval)) { | |
2225 | ignore_crossmnt = 1; | |
2226 | goto out_encode; | |
2227 | } | |
dcb488a3 AA |
2228 | /* |
2229 | * Why the heck aren't we just using nfsd_lookup?? | |
2230 | * Different "."/".." handling? Something else? | |
2231 | * At least, add a comment here to explain.... | |
2232 | */ | |
021d3a72 BF |
2233 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
2234 | if (err) { | |
2235 | nfserr = nfserrno(err); | |
1da177e4 LT |
2236 | goto out_put; |
2237 | } | |
dcb488a3 AA |
2238 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
2239 | if (nfserr) | |
2240 | goto out_put; | |
1da177e4 LT |
2241 | |
2242 | } | |
3227fa41 | 2243 | out_encode: |
1da177e4 | 2244 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, |
406a7ea9 | 2245 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
2246 | out_put: |
2247 | dput(dentry); | |
2248 | exp_put(exp); | |
2249 | return nfserr; | |
2250 | } | |
2251 | ||
2ebbc012 | 2252 | static __be32 * |
b37ad28b | 2253 | nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr) |
1da177e4 | 2254 | { |
2ebbc012 | 2255 | __be32 *attrlenp; |
1da177e4 LT |
2256 | |
2257 | if (buflen < 6) | |
2258 | return NULL; | |
2259 | *p++ = htonl(2); | |
2260 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
2261 | *p++ = htonl(0); /* bmval1 */ | |
2262 | ||
2263 | attrlenp = p++; | |
2264 | *p++ = nfserr; /* no htonl */ | |
2265 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
2266 | return p; | |
2267 | } | |
2268 | ||
2269 | static int | |
a0ad13ef N |
2270 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
2271 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 2272 | { |
a0ad13ef | 2273 | struct readdir_cd *ccd = ccdv; |
1da177e4 LT |
2274 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
2275 | int buflen; | |
2ebbc012 | 2276 | __be32 *p = cd->buffer; |
b2c0cea6 | 2277 | __be32 *cookiep; |
b37ad28b | 2278 | __be32 nfserr = nfserr_toosmall; |
1da177e4 LT |
2279 | |
2280 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
2281 | if (name && isdotent(name, namlen)) { | |
2282 | cd->common.err = nfs_ok; | |
2283 | return 0; | |
2284 | } | |
2285 | ||
2286 | if (cd->offset) | |
2287 | xdr_encode_hyper(cd->offset, (u64) offset); | |
2288 | ||
2289 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); | |
2290 | if (buflen < 0) | |
2291 | goto fail; | |
2292 | ||
2293 | *p++ = xdr_one; /* mark entry present */ | |
b2c0cea6 | 2294 | cookiep = p; |
1da177e4 LT |
2295 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
2296 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
2297 | ||
2298 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen); | |
2299 | switch (nfserr) { | |
2300 | case nfs_ok: | |
2301 | p += buflen; | |
2302 | break; | |
2303 | case nfserr_resource: | |
2304 | nfserr = nfserr_toosmall; | |
2305 | goto fail; | |
2306 | case nfserr_dropit: | |
2307 | goto fail; | |
b2c0cea6 BF |
2308 | case nfserr_noent: |
2309 | goto skip_entry; | |
1da177e4 LT |
2310 | default: |
2311 | /* | |
2312 | * If the client requested the RDATTR_ERROR attribute, | |
2313 | * we stuff the error code into this attribute | |
2314 | * and continue. If this attribute was not requested, | |
2315 | * then in accordance with the spec, we fail the | |
2316 | * entire READDIR operation(!) | |
2317 | */ | |
2318 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
2319 | goto fail; | |
1da177e4 | 2320 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
34081efc FI |
2321 | if (p == NULL) { |
2322 | nfserr = nfserr_toosmall; | |
1da177e4 | 2323 | goto fail; |
34081efc | 2324 | } |
1da177e4 LT |
2325 | } |
2326 | cd->buflen -= (p - cd->buffer); | |
2327 | cd->buffer = p; | |
b2c0cea6 BF |
2328 | cd->offset = cookiep; |
2329 | skip_entry: | |
1da177e4 LT |
2330 | cd->common.err = nfs_ok; |
2331 | return 0; | |
2332 | fail: | |
2333 | cd->common.err = nfserr; | |
2334 | return -EINVAL; | |
2335 | } | |
2336 | ||
e2f282b9 BH |
2337 | static void |
2338 | nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid) | |
2339 | { | |
bc749ca4 | 2340 | __be32 *p; |
e2f282b9 BH |
2341 | |
2342 | RESERVE_SPACE(sizeof(stateid_t)); | |
2343 | WRITE32(sid->si_generation); | |
2344 | WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
2345 | ADJUST_ARGS(); | |
2346 | } | |
2347 | ||
695e12f8 | 2348 | static __be32 |
b37ad28b | 2349 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 2350 | { |
bc749ca4 | 2351 | __be32 *p; |
1da177e4 LT |
2352 | |
2353 | if (!nfserr) { | |
2354 | RESERVE_SPACE(8); | |
2355 | WRITE32(access->ac_supported); | |
2356 | WRITE32(access->ac_resp_access); | |
2357 | ADJUST_ARGS(); | |
2358 | } | |
695e12f8 | 2359 | return nfserr; |
1da177e4 LT |
2360 | } |
2361 | ||
695e12f8 | 2362 | static __be32 |
b37ad28b | 2363 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 LT |
2364 | { |
2365 | ENCODE_SEQID_OP_HEAD; | |
2366 | ||
e2f282b9 BH |
2367 | if (!nfserr) |
2368 | nfsd4_encode_stateid(resp, &close->cl_stateid); | |
2369 | ||
1da177e4 | 2370 | ENCODE_SEQID_OP_TAIL(close->cl_stateowner); |
695e12f8 | 2371 | return nfserr; |
1da177e4 LT |
2372 | } |
2373 | ||
2374 | ||
695e12f8 | 2375 | static __be32 |
b37ad28b | 2376 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 2377 | { |
bc749ca4 | 2378 | __be32 *p; |
1da177e4 LT |
2379 | |
2380 | if (!nfserr) { | |
2381 | RESERVE_SPACE(8); | |
2382 | WRITEMEM(commit->co_verf.data, 8); | |
2383 | ADJUST_ARGS(); | |
2384 | } | |
695e12f8 | 2385 | return nfserr; |
1da177e4 LT |
2386 | } |
2387 | ||
695e12f8 | 2388 | static __be32 |
b37ad28b | 2389 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 2390 | { |
bc749ca4 | 2391 | __be32 *p; |
1da177e4 LT |
2392 | |
2393 | if (!nfserr) { | |
2394 | RESERVE_SPACE(32); | |
c654b8a9 | 2395 | write_cinfo(&p, &create->cr_cinfo); |
1da177e4 LT |
2396 | WRITE32(2); |
2397 | WRITE32(create->cr_bmval[0]); | |
2398 | WRITE32(create->cr_bmval[1]); | |
2399 | ADJUST_ARGS(); | |
2400 | } | |
695e12f8 | 2401 | return nfserr; |
1da177e4 LT |
2402 | } |
2403 | ||
b37ad28b AV |
2404 | static __be32 |
2405 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
2406 | { |
2407 | struct svc_fh *fhp = getattr->ga_fhp; | |
2408 | int buflen; | |
2409 | ||
2410 | if (nfserr) | |
2411 | return nfserr; | |
2412 | ||
2413 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); | |
2414 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, | |
2415 | resp->p, &buflen, getattr->ga_bmval, | |
406a7ea9 | 2416 | resp->rqstp, 0); |
1da177e4 LT |
2417 | if (!nfserr) |
2418 | resp->p += buflen; | |
2419 | return nfserr; | |
2420 | } | |
2421 | ||
695e12f8 BH |
2422 | static __be32 |
2423 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 2424 | { |
695e12f8 | 2425 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 2426 | unsigned int len; |
bc749ca4 | 2427 | __be32 *p; |
1da177e4 LT |
2428 | |
2429 | if (!nfserr) { | |
2430 | len = fhp->fh_handle.fh_size; | |
2431 | RESERVE_SPACE(len + 4); | |
2432 | WRITE32(len); | |
2433 | WRITEMEM(&fhp->fh_handle.fh_base, len); | |
2434 | ADJUST_ARGS(); | |
2435 | } | |
695e12f8 | 2436 | return nfserr; |
1da177e4 LT |
2437 | } |
2438 | ||
2439 | /* | |
2440 | * Including all fields other than the name, a LOCK4denied structure requires | |
2441 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
2442 | */ | |
2443 | static void | |
2444 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) | |
2445 | { | |
bc749ca4 | 2446 | __be32 *p; |
1da177e4 LT |
2447 | |
2448 | RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0)); | |
2449 | WRITE64(ld->ld_start); | |
2450 | WRITE64(ld->ld_length); | |
2451 | WRITE32(ld->ld_type); | |
2452 | if (ld->ld_sop) { | |
2453 | WRITEMEM(&ld->ld_clientid, 8); | |
2454 | WRITE32(ld->ld_sop->so_owner.len); | |
2455 | WRITEMEM(ld->ld_sop->so_owner.data, ld->ld_sop->so_owner.len); | |
2456 | kref_put(&ld->ld_sop->so_ref, nfs4_free_stateowner); | |
2457 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ | |
2458 | WRITE64((u64)0); /* clientid */ | |
2459 | WRITE32(0); /* length of owner name */ | |
2460 | } | |
2461 | ADJUST_ARGS(); | |
2462 | } | |
2463 | ||
695e12f8 | 2464 | static __be32 |
b37ad28b | 2465 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 2466 | { |
1da177e4 LT |
2467 | ENCODE_SEQID_OP_HEAD; |
2468 | ||
e2f282b9 BH |
2469 | if (!nfserr) |
2470 | nfsd4_encode_stateid(resp, &lock->lk_resp_stateid); | |
2471 | else if (nfserr == nfserr_denied) | |
1da177e4 LT |
2472 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); |
2473 | ||
3a65588a | 2474 | ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner); |
695e12f8 | 2475 | return nfserr; |
1da177e4 LT |
2476 | } |
2477 | ||
695e12f8 | 2478 | static __be32 |
b37ad28b | 2479 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 LT |
2480 | { |
2481 | if (nfserr == nfserr_denied) | |
2482 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); | |
695e12f8 | 2483 | return nfserr; |
1da177e4 LT |
2484 | } |
2485 | ||
695e12f8 | 2486 | static __be32 |
b37ad28b | 2487 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 LT |
2488 | { |
2489 | ENCODE_SEQID_OP_HEAD; | |
2490 | ||
e2f282b9 BH |
2491 | if (!nfserr) |
2492 | nfsd4_encode_stateid(resp, &locku->lu_stateid); | |
2493 | ||
1da177e4 | 2494 | ENCODE_SEQID_OP_TAIL(locku->lu_stateowner); |
695e12f8 | 2495 | return nfserr; |
1da177e4 LT |
2496 | } |
2497 | ||
2498 | ||
695e12f8 | 2499 | static __be32 |
b37ad28b | 2500 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 2501 | { |
bc749ca4 | 2502 | __be32 *p; |
1da177e4 LT |
2503 | |
2504 | if (!nfserr) { | |
2505 | RESERVE_SPACE(20); | |
c654b8a9 | 2506 | write_cinfo(&p, &link->li_cinfo); |
1da177e4 LT |
2507 | ADJUST_ARGS(); |
2508 | } | |
695e12f8 | 2509 | return nfserr; |
1da177e4 LT |
2510 | } |
2511 | ||
2512 | ||
695e12f8 | 2513 | static __be32 |
b37ad28b | 2514 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 2515 | { |
bc749ca4 | 2516 | __be32 *p; |
1da177e4 LT |
2517 | ENCODE_SEQID_OP_HEAD; |
2518 | ||
2519 | if (nfserr) | |
2520 | goto out; | |
2521 | ||
e2f282b9 BH |
2522 | nfsd4_encode_stateid(resp, &open->op_stateid); |
2523 | RESERVE_SPACE(40); | |
c654b8a9 | 2524 | write_cinfo(&p, &open->op_cinfo); |
1da177e4 LT |
2525 | WRITE32(open->op_rflags); |
2526 | WRITE32(2); | |
2527 | WRITE32(open->op_bmval[0]); | |
2528 | WRITE32(open->op_bmval[1]); | |
2529 | WRITE32(open->op_delegate_type); | |
2530 | ADJUST_ARGS(); | |
2531 | ||
2532 | switch (open->op_delegate_type) { | |
2533 | case NFS4_OPEN_DELEGATE_NONE: | |
2534 | break; | |
2535 | case NFS4_OPEN_DELEGATE_READ: | |
e2f282b9 BH |
2536 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2537 | RESERVE_SPACE(20); | |
7b190fec | 2538 | WRITE32(open->op_recall); |
1da177e4 LT |
2539 | |
2540 | /* | |
2541 | * TODO: ACE's in delegations | |
2542 | */ | |
2543 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2544 | WRITE32(0); | |
2545 | WRITE32(0); | |
2546 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2547 | ADJUST_ARGS(); | |
2548 | break; | |
2549 | case NFS4_OPEN_DELEGATE_WRITE: | |
e2f282b9 BH |
2550 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2551 | RESERVE_SPACE(32); | |
1da177e4 LT |
2552 | WRITE32(0); |
2553 | ||
2554 | /* | |
2555 | * TODO: space_limit's in delegations | |
2556 | */ | |
2557 | WRITE32(NFS4_LIMIT_SIZE); | |
2558 | WRITE32(~(u32)0); | |
2559 | WRITE32(~(u32)0); | |
2560 | ||
2561 | /* | |
2562 | * TODO: ACE's in delegations | |
2563 | */ | |
2564 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2565 | WRITE32(0); | |
2566 | WRITE32(0); | |
2567 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2568 | ADJUST_ARGS(); | |
2569 | break; | |
2570 | default: | |
2571 | BUG(); | |
2572 | } | |
2573 | /* XXX save filehandle here */ | |
2574 | out: | |
2575 | ENCODE_SEQID_OP_TAIL(open->op_stateowner); | |
695e12f8 | 2576 | return nfserr; |
1da177e4 LT |
2577 | } |
2578 | ||
695e12f8 | 2579 | static __be32 |
b37ad28b | 2580 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 LT |
2581 | { |
2582 | ENCODE_SEQID_OP_HEAD; | |
e2f282b9 BH |
2583 | |
2584 | if (!nfserr) | |
2585 | nfsd4_encode_stateid(resp, &oc->oc_resp_stateid); | |
1da177e4 LT |
2586 | |
2587 | ENCODE_SEQID_OP_TAIL(oc->oc_stateowner); | |
695e12f8 | 2588 | return nfserr; |
1da177e4 LT |
2589 | } |
2590 | ||
695e12f8 | 2591 | static __be32 |
b37ad28b | 2592 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 LT |
2593 | { |
2594 | ENCODE_SEQID_OP_HEAD; | |
e2f282b9 BH |
2595 | |
2596 | if (!nfserr) | |
2597 | nfsd4_encode_stateid(resp, &od->od_stateid); | |
1da177e4 LT |
2598 | |
2599 | ENCODE_SEQID_OP_TAIL(od->od_stateowner); | |
695e12f8 | 2600 | return nfserr; |
1da177e4 LT |
2601 | } |
2602 | ||
b37ad28b AV |
2603 | static __be32 |
2604 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
44524359 | 2605 | struct nfsd4_read *read) |
1da177e4 LT |
2606 | { |
2607 | u32 eof; | |
2608 | int v, pn; | |
2609 | unsigned long maxcount; | |
2610 | long len; | |
bc749ca4 | 2611 | __be32 *p; |
1da177e4 LT |
2612 | |
2613 | if (nfserr) | |
2614 | return nfserr; | |
2615 | if (resp->xbuf->page_len) | |
2616 | return nfserr_resource; | |
2617 | ||
2618 | RESERVE_SPACE(8); /* eof flag and byte count */ | |
2619 | ||
7adae489 | 2620 | maxcount = svc_max_payload(resp->rqstp); |
1da177e4 LT |
2621 | if (maxcount > read->rd_length) |
2622 | maxcount = read->rd_length; | |
2623 | ||
2624 | len = maxcount; | |
2625 | v = 0; | |
2626 | while (len > 0) { | |
44524359 | 2627 | pn = resp->rqstp->rq_resused++; |
3cc03b16 | 2628 | resp->rqstp->rq_vec[v].iov_base = |
44524359 | 2629 | page_address(resp->rqstp->rq_respages[pn]); |
3cc03b16 | 2630 | resp->rqstp->rq_vec[v].iov_len = |
44524359 | 2631 | len < PAGE_SIZE ? len : PAGE_SIZE; |
1da177e4 LT |
2632 | v++; |
2633 | len -= PAGE_SIZE; | |
2634 | } | |
2635 | read->rd_vlen = v; | |
2636 | ||
2637 | nfserr = nfsd_read(read->rd_rqstp, read->rd_fhp, read->rd_filp, | |
3cc03b16 | 2638 | read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, |
1da177e4 LT |
2639 | &maxcount); |
2640 | ||
2641 | if (nfserr == nfserr_symlink) | |
2642 | nfserr = nfserr_inval; | |
2643 | if (nfserr) | |
2644 | return nfserr; | |
44524359 N |
2645 | eof = (read->rd_offset + maxcount >= |
2646 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 LT |
2647 | |
2648 | WRITE32(eof); | |
2649 | WRITE32(maxcount); | |
2650 | ADJUST_ARGS(); | |
6ed6decc N |
2651 | resp->xbuf->head[0].iov_len = (char*)p |
2652 | - (char*)resp->xbuf->head[0].iov_base; | |
1da177e4 LT |
2653 | resp->xbuf->page_len = maxcount; |
2654 | ||
6ed6decc | 2655 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2656 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2657 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2658 | if (maxcount&3) { |
6ed6decc N |
2659 | RESERVE_SPACE(4); |
2660 | WRITE32(0); | |
1da177e4 LT |
2661 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2662 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2663 | ADJUST_ARGS(); |
1da177e4 LT |
2664 | } |
2665 | return 0; | |
2666 | } | |
2667 | ||
b37ad28b AV |
2668 | static __be32 |
2669 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
2670 | { |
2671 | int maxcount; | |
2672 | char *page; | |
bc749ca4 | 2673 | __be32 *p; |
1da177e4 LT |
2674 | |
2675 | if (nfserr) | |
2676 | return nfserr; | |
2677 | if (resp->xbuf->page_len) | |
2678 | return nfserr_resource; | |
2679 | ||
44524359 | 2680 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
1da177e4 LT |
2681 | |
2682 | maxcount = PAGE_SIZE; | |
2683 | RESERVE_SPACE(4); | |
2684 | ||
2685 | /* | |
2686 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
2687 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
2688 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
2689 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
2690 | */ | |
2691 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); | |
2692 | if (nfserr == nfserr_isdir) | |
2693 | return nfserr_inval; | |
2694 | if (nfserr) | |
2695 | return nfserr; | |
2696 | ||
2697 | WRITE32(maxcount); | |
2698 | ADJUST_ARGS(); | |
6ed6decc N |
2699 | resp->xbuf->head[0].iov_len = (char*)p |
2700 | - (char*)resp->xbuf->head[0].iov_base; | |
2701 | resp->xbuf->page_len = maxcount; | |
1da177e4 | 2702 | |
6ed6decc | 2703 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2704 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2705 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2706 | if (maxcount&3) { |
6ed6decc N |
2707 | RESERVE_SPACE(4); |
2708 | WRITE32(0); | |
1da177e4 LT |
2709 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2710 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2711 | ADJUST_ARGS(); |
1da177e4 LT |
2712 | } |
2713 | return 0; | |
2714 | } | |
2715 | ||
b37ad28b AV |
2716 | static __be32 |
2717 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
2718 | { |
2719 | int maxcount; | |
2720 | loff_t offset; | |
2ebbc012 | 2721 | __be32 *page, *savep, *tailbase; |
bc749ca4 | 2722 | __be32 *p; |
1da177e4 LT |
2723 | |
2724 | if (nfserr) | |
2725 | return nfserr; | |
2726 | if (resp->xbuf->page_len) | |
2727 | return nfserr_resource; | |
2728 | ||
2729 | RESERVE_SPACE(8); /* verifier */ | |
2730 | savep = p; | |
2731 | ||
2732 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
2733 | WRITE32(0); | |
2734 | WRITE32(0); | |
2735 | ADJUST_ARGS(); | |
2736 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; | |
bb6e8a9f | 2737 | tailbase = p; |
1da177e4 LT |
2738 | |
2739 | maxcount = PAGE_SIZE; | |
2740 | if (maxcount > readdir->rd_maxcount) | |
2741 | maxcount = readdir->rd_maxcount; | |
2742 | ||
2743 | /* | |
2744 | * Convert from bytes to words, account for the two words already | |
2745 | * written, make sure to leave two words at the end for the next | |
2746 | * pointer and eof field. | |
2747 | */ | |
2748 | maxcount = (maxcount >> 2) - 4; | |
2749 | if (maxcount < 0) { | |
2750 | nfserr = nfserr_toosmall; | |
2751 | goto err_no_verf; | |
2752 | } | |
2753 | ||
44524359 | 2754 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
1da177e4 LT |
2755 | readdir->common.err = 0; |
2756 | readdir->buflen = maxcount; | |
2757 | readdir->buffer = page; | |
2758 | readdir->offset = NULL; | |
2759 | ||
2760 | offset = readdir->rd_cookie; | |
2761 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
2762 | &offset, | |
2763 | &readdir->common, nfsd4_encode_dirent); | |
2764 | if (nfserr == nfs_ok && | |
2765 | readdir->common.err == nfserr_toosmall && | |
2766 | readdir->buffer == page) | |
2767 | nfserr = nfserr_toosmall; | |
2768 | if (nfserr == nfserr_symlink) | |
2769 | nfserr = nfserr_notdir; | |
2770 | if (nfserr) | |
2771 | goto err_no_verf; | |
2772 | ||
2773 | if (readdir->offset) | |
2774 | xdr_encode_hyper(readdir->offset, offset); | |
2775 | ||
2776 | p = readdir->buffer; | |
2777 | *p++ = 0; /* no more entries */ | |
2778 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
44524359 N |
2779 | resp->xbuf->page_len = ((char*)p) - (char*)page_address( |
2780 | resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); | |
1da177e4 | 2781 | |
bb6e8a9f | 2782 | /* Use rest of head for padding and remaining ops: */ |
bb6e8a9f | 2783 | resp->xbuf->tail[0].iov_base = tailbase; |
1da177e4 LT |
2784 | resp->xbuf->tail[0].iov_len = 0; |
2785 | resp->p = resp->xbuf->tail[0].iov_base; | |
bb6e8a9f | 2786 | resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; |
1da177e4 LT |
2787 | |
2788 | return 0; | |
2789 | err_no_verf: | |
2790 | p = savep; | |
2791 | ADJUST_ARGS(); | |
2792 | return nfserr; | |
2793 | } | |
2794 | ||
695e12f8 | 2795 | static __be32 |
b37ad28b | 2796 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 2797 | { |
bc749ca4 | 2798 | __be32 *p; |
1da177e4 LT |
2799 | |
2800 | if (!nfserr) { | |
2801 | RESERVE_SPACE(20); | |
c654b8a9 | 2802 | write_cinfo(&p, &remove->rm_cinfo); |
1da177e4 LT |
2803 | ADJUST_ARGS(); |
2804 | } | |
695e12f8 | 2805 | return nfserr; |
1da177e4 LT |
2806 | } |
2807 | ||
695e12f8 | 2808 | static __be32 |
b37ad28b | 2809 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 2810 | { |
bc749ca4 | 2811 | __be32 *p; |
1da177e4 LT |
2812 | |
2813 | if (!nfserr) { | |
2814 | RESERVE_SPACE(40); | |
c654b8a9 BF |
2815 | write_cinfo(&p, &rename->rn_sinfo); |
2816 | write_cinfo(&p, &rename->rn_tinfo); | |
1da177e4 LT |
2817 | ADJUST_ARGS(); |
2818 | } | |
695e12f8 | 2819 | return nfserr; |
1da177e4 LT |
2820 | } |
2821 | ||
695e12f8 | 2822 | static __be32 |
ca5c8cde | 2823 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, |
dcb488a3 AA |
2824 | struct nfsd4_secinfo *secinfo) |
2825 | { | |
2826 | int i = 0; | |
2827 | struct svc_export *exp = secinfo->si_exp; | |
4796f457 BF |
2828 | u32 nflavs; |
2829 | struct exp_flavor_info *flavs; | |
2830 | struct exp_flavor_info def_flavs[2]; | |
bc749ca4 | 2831 | __be32 *p; |
dcb488a3 AA |
2832 | |
2833 | if (nfserr) | |
2834 | goto out; | |
4796f457 BF |
2835 | if (exp->ex_nflavors) { |
2836 | flavs = exp->ex_flavors; | |
2837 | nflavs = exp->ex_nflavors; | |
2838 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
2839 | flavs = def_flavs; | |
2840 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
2841 | nflavs = 2; | |
2842 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
2843 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
2844 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
2845 | nflavs = 1; | |
2846 | flavs[0].pseudoflavor | |
2847 | = svcauth_gss_flavor(exp->ex_client); | |
2848 | } else { | |
2849 | nflavs = 1; | |
2850 | flavs[0].pseudoflavor | |
2851 | = exp->ex_client->flavour->flavour; | |
2852 | } | |
2853 | } | |
2854 | ||
dcb488a3 | 2855 | RESERVE_SPACE(4); |
4796f457 | 2856 | WRITE32(nflavs); |
dcb488a3 | 2857 | ADJUST_ARGS(); |
4796f457 BF |
2858 | for (i = 0; i < nflavs; i++) { |
2859 | u32 flav = flavs[i].pseudoflavor; | |
dcb488a3 AA |
2860 | struct gss_api_mech *gm = gss_mech_get_by_pseudoflavor(flav); |
2861 | ||
2862 | if (gm) { | |
2863 | RESERVE_SPACE(4); | |
2864 | WRITE32(RPC_AUTH_GSS); | |
2865 | ADJUST_ARGS(); | |
2866 | RESERVE_SPACE(4 + gm->gm_oid.len); | |
2867 | WRITE32(gm->gm_oid.len); | |
2868 | WRITEMEM(gm->gm_oid.data, gm->gm_oid.len); | |
2869 | ADJUST_ARGS(); | |
2870 | RESERVE_SPACE(4); | |
2871 | WRITE32(0); /* qop */ | |
2872 | ADJUST_ARGS(); | |
2873 | RESERVE_SPACE(4); | |
2874 | WRITE32(gss_pseudoflavor_to_service(gm, flav)); | |
2875 | ADJUST_ARGS(); | |
2876 | gss_mech_put(gm); | |
2877 | } else { | |
2878 | RESERVE_SPACE(4); | |
2879 | WRITE32(flav); | |
2880 | ADJUST_ARGS(); | |
2881 | } | |
2882 | } | |
2883 | out: | |
2884 | if (exp) | |
2885 | exp_put(exp); | |
695e12f8 | 2886 | return nfserr; |
dcb488a3 AA |
2887 | } |
2888 | ||
1da177e4 LT |
2889 | /* |
2890 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
2891 | * regardless of the error status. | |
2892 | */ | |
695e12f8 | 2893 | static __be32 |
b37ad28b | 2894 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 2895 | { |
bc749ca4 | 2896 | __be32 *p; |
1da177e4 LT |
2897 | |
2898 | RESERVE_SPACE(12); | |
2899 | if (nfserr) { | |
2900 | WRITE32(2); | |
2901 | WRITE32(0); | |
2902 | WRITE32(0); | |
2903 | } | |
2904 | else { | |
2905 | WRITE32(2); | |
2906 | WRITE32(setattr->sa_bmval[0]); | |
2907 | WRITE32(setattr->sa_bmval[1]); | |
2908 | } | |
2909 | ADJUST_ARGS(); | |
695e12f8 | 2910 | return nfserr; |
1da177e4 LT |
2911 | } |
2912 | ||
695e12f8 | 2913 | static __be32 |
b37ad28b | 2914 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 2915 | { |
bc749ca4 | 2916 | __be32 *p; |
1da177e4 LT |
2917 | |
2918 | if (!nfserr) { | |
2919 | RESERVE_SPACE(8 + sizeof(nfs4_verifier)); | |
2920 | WRITEMEM(&scd->se_clientid, 8); | |
2921 | WRITEMEM(&scd->se_confirm, sizeof(nfs4_verifier)); | |
2922 | ADJUST_ARGS(); | |
2923 | } | |
2924 | else if (nfserr == nfserr_clid_inuse) { | |
2925 | RESERVE_SPACE(8); | |
2926 | WRITE32(0); | |
2927 | WRITE32(0); | |
2928 | ADJUST_ARGS(); | |
2929 | } | |
695e12f8 | 2930 | return nfserr; |
1da177e4 LT |
2931 | } |
2932 | ||
695e12f8 | 2933 | static __be32 |
b37ad28b | 2934 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 2935 | { |
bc749ca4 | 2936 | __be32 *p; |
1da177e4 LT |
2937 | |
2938 | if (!nfserr) { | |
2939 | RESERVE_SPACE(16); | |
2940 | WRITE32(write->wr_bytes_written); | |
2941 | WRITE32(write->wr_how_written); | |
2942 | WRITEMEM(write->wr_verifier.data, 8); | |
2943 | ADJUST_ARGS(); | |
2944 | } | |
695e12f8 | 2945 | return nfserr; |
1da177e4 LT |
2946 | } |
2947 | ||
2db134eb AA |
2948 | static __be32 |
2949 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, int nfserr, | |
2950 | struct nfsd4_exchange_id *exid) | |
2951 | { | |
bc749ca4 | 2952 | __be32 *p; |
0733d213 AA |
2953 | char *major_id; |
2954 | char *server_scope; | |
2955 | int major_id_sz; | |
2956 | int server_scope_sz; | |
2957 | uint64_t minor_id = 0; | |
2958 | ||
2959 | if (nfserr) | |
2960 | return nfserr; | |
2961 | ||
2962 | major_id = utsname()->nodename; | |
2963 | major_id_sz = strlen(major_id); | |
2964 | server_scope = utsname()->nodename; | |
2965 | server_scope_sz = strlen(server_scope); | |
2966 | ||
2967 | RESERVE_SPACE( | |
2968 | 8 /* eir_clientid */ + | |
2969 | 4 /* eir_sequenceid */ + | |
2970 | 4 /* eir_flags */ + | |
2971 | 4 /* spr_how (SP4_NONE) */ + | |
2972 | 8 /* so_minor_id */ + | |
2973 | 4 /* so_major_id.len */ + | |
2974 | (XDR_QUADLEN(major_id_sz) * 4) + | |
2975 | 4 /* eir_server_scope.len */ + | |
2976 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
2977 | 4 /* eir_server_impl_id.count (0) */); | |
2978 | ||
2979 | WRITEMEM(&exid->clientid, 8); | |
2980 | WRITE32(exid->seqid); | |
2981 | WRITE32(exid->flags); | |
2982 | ||
2983 | /* state_protect4_r. Currently only support SP4_NONE */ | |
2984 | BUG_ON(exid->spa_how != SP4_NONE); | |
2985 | WRITE32(exid->spa_how); | |
2986 | ||
2987 | /* The server_owner struct */ | |
2988 | WRITE64(minor_id); /* Minor id */ | |
2989 | /* major id */ | |
2990 | WRITE32(major_id_sz); | |
2991 | WRITEMEM(major_id, major_id_sz); | |
2992 | ||
2993 | /* Server scope */ | |
2994 | WRITE32(server_scope_sz); | |
2995 | WRITEMEM(server_scope, server_scope_sz); | |
2996 | ||
2997 | /* Implementation id */ | |
2998 | WRITE32(0); /* zero length nfs_impl_id4 array */ | |
2999 | ADJUST_ARGS(); | |
3000 | return 0; | |
2db134eb AA |
3001 | } |
3002 | ||
3003 | static __be32 | |
3004 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, int nfserr, | |
3005 | struct nfsd4_create_session *sess) | |
3006 | { | |
bc749ca4 | 3007 | __be32 *p; |
ec6b5d7b AA |
3008 | |
3009 | if (nfserr) | |
3010 | return nfserr; | |
3011 | ||
3012 | RESERVE_SPACE(24); | |
3013 | WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3014 | WRITE32(sess->seqid); | |
3015 | WRITE32(sess->flags); | |
3016 | ADJUST_ARGS(); | |
3017 | ||
3018 | RESERVE_SPACE(28); | |
3019 | WRITE32(0); /* headerpadsz */ | |
3020 | WRITE32(sess->fore_channel.maxreq_sz); | |
3021 | WRITE32(sess->fore_channel.maxresp_sz); | |
3022 | WRITE32(sess->fore_channel.maxresp_cached); | |
3023 | WRITE32(sess->fore_channel.maxops); | |
3024 | WRITE32(sess->fore_channel.maxreqs); | |
3025 | WRITE32(sess->fore_channel.nr_rdma_attrs); | |
3026 | ADJUST_ARGS(); | |
3027 | ||
3028 | if (sess->fore_channel.nr_rdma_attrs) { | |
3029 | RESERVE_SPACE(4); | |
3030 | WRITE32(sess->fore_channel.rdma_attrs); | |
3031 | ADJUST_ARGS(); | |
3032 | } | |
3033 | ||
3034 | RESERVE_SPACE(28); | |
3035 | WRITE32(0); /* headerpadsz */ | |
3036 | WRITE32(sess->back_channel.maxreq_sz); | |
3037 | WRITE32(sess->back_channel.maxresp_sz); | |
3038 | WRITE32(sess->back_channel.maxresp_cached); | |
3039 | WRITE32(sess->back_channel.maxops); | |
3040 | WRITE32(sess->back_channel.maxreqs); | |
3041 | WRITE32(sess->back_channel.nr_rdma_attrs); | |
3042 | ADJUST_ARGS(); | |
3043 | ||
3044 | if (sess->back_channel.nr_rdma_attrs) { | |
3045 | RESERVE_SPACE(4); | |
3046 | WRITE32(sess->back_channel.rdma_attrs); | |
3047 | ADJUST_ARGS(); | |
3048 | } | |
3049 | return 0; | |
2db134eb AA |
3050 | } |
3051 | ||
3052 | static __be32 | |
3053 | nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, int nfserr, | |
3054 | struct nfsd4_destroy_session *destroy_session) | |
3055 | { | |
2db134eb AA |
3056 | return nfserr; |
3057 | } | |
3058 | ||
bf864a31 | 3059 | __be32 |
2db134eb AA |
3060 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr, |
3061 | struct nfsd4_sequence *seq) | |
3062 | { | |
bc749ca4 | 3063 | __be32 *p; |
b85d4c01 BH |
3064 | |
3065 | if (nfserr) | |
3066 | return nfserr; | |
3067 | ||
3068 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20); | |
3069 | WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3070 | WRITE32(seq->seqid); | |
3071 | WRITE32(seq->slotid); | |
3072 | WRITE32(seq->maxslots); | |
3073 | /* | |
3074 | * FIXME: for now: | |
3075 | * target_maxslots = maxslots | |
3076 | * status_flags = 0 | |
3077 | */ | |
3078 | WRITE32(seq->maxslots); | |
3079 | WRITE32(0); | |
3080 | ||
3081 | ADJUST_ARGS(); | |
557ce264 | 3082 | resp->cstate.datap = p; /* DRC cache data pointer */ |
b85d4c01 | 3083 | return 0; |
2db134eb AA |
3084 | } |
3085 | ||
695e12f8 BH |
3086 | static __be32 |
3087 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
3088 | { | |
3089 | return nfserr; | |
3090 | } | |
3091 | ||
3092 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
3093 | ||
2db134eb AA |
3094 | /* |
3095 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
3096 | * since we don't need to filter out obsolete ops as this is | |
3097 | * done in the decoding phase. | |
3098 | */ | |
695e12f8 | 3099 | static nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
3100 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
3101 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
3102 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
3103 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
3104 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
3105 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
3106 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
3107 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
3108 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
3109 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
3110 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
3111 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
3112 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
3113 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
3114 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3115 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 3116 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
3117 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
3118 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
3119 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3120 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3121 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3122 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
3123 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
3124 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
3125 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
3126 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
3127 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
3128 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3129 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3130 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
3131 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
3132 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
3133 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
3134 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3135 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
3136 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3137 | |
3138 | /* NFSv4.1 operations */ | |
3139 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
3140 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_noop, | |
3141 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, | |
3142 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
3143 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session, | |
3144 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
3145 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, | |
3146 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, | |
3147 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
3148 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
3149 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
3150 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
3151 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_noop, | |
3152 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, | |
3153 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
3154 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
3155 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, | |
3156 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
3157 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
695e12f8 BH |
3158 | }; |
3159 | ||
496c262c AA |
3160 | /* |
3161 | * Calculate the total amount of memory that the compound response has taken | |
3162 | * after encoding the current operation. | |
3163 | * | |
3164 | * pad: add on 8 bytes for the next operation's op_code and status so that | |
3165 | * there is room to cache a failure on the next operation. | |
3166 | * | |
3167 | * Compare this length to the session se_fmaxresp_cached. | |
3168 | * | |
3169 | * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so | |
3170 | * will be at least a page and will therefore hold the xdr_buf head. | |
3171 | */ | |
3172 | static int nfsd4_check_drc_limit(struct nfsd4_compoundres *resp) | |
3173 | { | |
3174 | int status = 0; | |
3175 | struct xdr_buf *xb = &resp->rqstp->rq_res; | |
3176 | struct nfsd4_compoundargs *args = resp->rqstp->rq_argp; | |
3177 | struct nfsd4_session *session = NULL; | |
3178 | struct nfsd4_slot *slot = resp->cstate.slot; | |
3179 | u32 length, tlen = 0, pad = 8; | |
3180 | ||
3181 | if (!nfsd4_has_session(&resp->cstate)) | |
3182 | return status; | |
3183 | ||
3184 | session = resp->cstate.session; | |
557ce264 | 3185 | if (session == NULL || slot->sl_cachethis == 0) |
496c262c AA |
3186 | return status; |
3187 | ||
3188 | if (resp->opcnt >= args->opcnt) | |
3189 | pad = 0; /* this is the last operation */ | |
3190 | ||
3191 | if (xb->page_len == 0) { | |
3192 | length = (char *)resp->p - (char *)xb->head[0].iov_base + pad; | |
3193 | } else { | |
3194 | if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0) | |
3195 | tlen = (char *)resp->p - (char *)xb->tail[0].iov_base; | |
3196 | ||
3197 | length = xb->head[0].iov_len + xb->page_len + tlen + pad; | |
3198 | } | |
3199 | dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__, | |
3200 | length, xb->page_len, tlen, pad); | |
3201 | ||
6c18ba9f | 3202 | if (length <= session->se_fchannel.maxresp_cached) |
496c262c AA |
3203 | return status; |
3204 | else | |
3205 | return nfserr_rep_too_big_to_cache; | |
3206 | } | |
3207 | ||
1da177e4 LT |
3208 | void |
3209 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3210 | { | |
2ebbc012 | 3211 | __be32 *statp; |
bc749ca4 | 3212 | __be32 *p; |
1da177e4 LT |
3213 | |
3214 | RESERVE_SPACE(8); | |
3215 | WRITE32(op->opnum); | |
3216 | statp = p++; /* to be backfilled at the end */ | |
3217 | ADJUST_ARGS(); | |
3218 | ||
695e12f8 BH |
3219 | if (op->opnum == OP_ILLEGAL) |
3220 | goto status; | |
3221 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || | |
3222 | !nfsd4_enc_ops[op->opnum]); | |
3223 | op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u); | |
496c262c AA |
3224 | /* nfsd4_check_drc_limit guarantees enough room for error status */ |
3225 | if (!op->status && nfsd4_check_drc_limit(resp)) | |
3226 | op->status = nfserr_rep_too_big_to_cache; | |
695e12f8 | 3227 | status: |
1da177e4 LT |
3228 | /* |
3229 | * Note: We write the status directly, instead of using WRITE32(), | |
3230 | * since it is already in network byte order. | |
3231 | */ | |
3232 | *statp = op->status; | |
3233 | } | |
3234 | ||
3235 | /* | |
3236 | * Encode the reply stored in the stateowner reply cache | |
3237 | * | |
3238 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
3239 | * previously sent already encoded operation. | |
3240 | * | |
3241 | * called with nfs4_lock_state() held | |
3242 | */ | |
3243 | void | |
3244 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3245 | { | |
bc749ca4 | 3246 | __be32 *p; |
1da177e4 LT |
3247 | struct nfs4_replay *rp = op->replay; |
3248 | ||
3249 | BUG_ON(!rp); | |
3250 | ||
3251 | RESERVE_SPACE(8); | |
3252 | WRITE32(op->opnum); | |
3253 | *p++ = rp->rp_status; /* already xdr'ed */ | |
3254 | ADJUST_ARGS(); | |
3255 | ||
3256 | RESERVE_SPACE(rp->rp_buflen); | |
3257 | WRITEMEM(rp->rp_buf, rp->rp_buflen); | |
3258 | ADJUST_ARGS(); | |
3259 | } | |
3260 | ||
1da177e4 | 3261 | int |
2ebbc012 | 3262 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
3263 | { |
3264 | return xdr_ressize_check(rqstp, p); | |
3265 | } | |
3266 | ||
3267 | void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args) | |
3268 | { | |
3269 | if (args->ops != args->iops) { | |
3270 | kfree(args->ops); | |
3271 | args->ops = args->iops; | |
3272 | } | |
f99d49ad JJ |
3273 | kfree(args->tmpp); |
3274 | args->tmpp = NULL; | |
1da177e4 LT |
3275 | while (args->to_free) { |
3276 | struct tmpbuf *tb = args->to_free; | |
3277 | args->to_free = tb->next; | |
3278 | tb->release(tb->buf); | |
3279 | kfree(tb); | |
3280 | } | |
3281 | } | |
3282 | ||
3283 | int | |
2ebbc012 | 3284 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 3285 | { |
b37ad28b | 3286 | __be32 status; |
1da177e4 LT |
3287 | |
3288 | args->p = p; | |
3289 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
3290 | args->pagelist = rqstp->rq_arg.pages; | |
3291 | args->pagelen = rqstp->rq_arg.page_len; | |
3292 | args->tmpp = NULL; | |
3293 | args->to_free = NULL; | |
3294 | args->ops = args->iops; | |
3295 | args->rqstp = rqstp; | |
3296 | ||
3297 | status = nfsd4_decode_compound(args); | |
3298 | if (status) { | |
3299 | nfsd4_release_compoundargs(args); | |
3300 | } | |
3301 | return !status; | |
3302 | } | |
3303 | ||
3304 | int | |
2ebbc012 | 3305 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
3306 | { |
3307 | /* | |
3308 | * All that remains is to write the tag and operation count... | |
3309 | */ | |
557ce264 | 3310 | struct nfsd4_compound_state *cs = &resp->cstate; |
1da177e4 LT |
3311 | struct kvec *iov; |
3312 | p = resp->tagp; | |
3313 | *p++ = htonl(resp->taglen); | |
3314 | memcpy(p, resp->tag, resp->taglen); | |
3315 | p += XDR_QUADLEN(resp->taglen); | |
3316 | *p++ = htonl(resp->opcnt); | |
3317 | ||
3318 | if (rqstp->rq_res.page_len) | |
3319 | iov = &rqstp->rq_res.tail[0]; | |
3320 | else | |
3321 | iov = &rqstp->rq_res.head[0]; | |
3322 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; | |
3323 | BUG_ON(iov->iov_len > PAGE_SIZE); | |
26c0c75e BF |
3324 | if (nfsd4_has_session(cs)) { |
3325 | if (cs->status != nfserr_replay_cache) { | |
3326 | nfsd4_store_cache_entry(resp); | |
3327 | dprintk("%s: SET SLOT STATE TO AVAILABLE\n", __func__); | |
dbd65a7e | 3328 | cs->slot->sl_inuse = false; |
26c0c75e | 3329 | } |
d7682988 BH |
3330 | /* Renew the clientid on success and on replay */ |
3331 | release_session_client(cs->session); | |
da3846a2 | 3332 | } |
1da177e4 LT |
3333 | return 1; |
3334 | } | |
3335 | ||
3336 | /* | |
3337 | * Local variables: | |
3338 | * c-basic-offset: 8 | |
3339 | * End: | |
3340 | */ |