Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Server-side XDR for NFSv4 |
3 | * | |
4 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Kendrick Smith <kmsmith@umich.edu> | |
8 | * Andy Adamson <andros@umich.edu> | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or without | |
11 | * modification, are permitted provided that the following conditions | |
12 | * are met: | |
13 | * | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions and the following disclaimer. | |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in the | |
18 | * documentation and/or other materials provided with the distribution. | |
19 | * 3. Neither the name of the University nor the names of its | |
20 | * contributors may be used to endorse or promote products derived | |
21 | * from this software without specific prior written permission. | |
22 | * | |
23 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
24 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
25 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
26 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
30 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
31 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
32 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
33 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
34 | * | |
35 | * TODO: Neil Brown made the following observation: We currently | |
36 | * initially reserve NFSD_BUFSIZE space on the transmit queue and | |
37 | * never release any of that until the request is complete. | |
38 | * It would be good to calculate a new maximum response size while | |
39 | * decoding the COMPOUND, and call svc_reserve with this number | |
40 | * at the end of nfs4svc_decode_compoundargs. | |
41 | */ | |
42 | ||
43 | #include <linux/param.h> | |
44 | #include <linux/smp.h> | |
1da177e4 LT |
45 | #include <linux/fs.h> |
46 | #include <linux/namei.h> | |
47 | #include <linux/vfs.h> | |
0733d213 | 48 | #include <linux/utsname.h> |
1da177e4 LT |
49 | #include <linux/sunrpc/xdr.h> |
50 | #include <linux/sunrpc/svc.h> | |
51 | #include <linux/sunrpc/clnt.h> | |
52 | #include <linux/nfsd/nfsd.h> | |
53 | #include <linux/nfsd/state.h> | |
54 | #include <linux/nfsd/xdr4.h> | |
55 | #include <linux/nfsd_idmap.h> | |
56 | #include <linux/nfs4.h> | |
57 | #include <linux/nfs4_acl.h> | |
dcb488a3 | 58 | #include <linux/sunrpc/gss_api.h> |
4796f457 | 59 | #include <linux/sunrpc/svcauth_gss.h> |
1da177e4 LT |
60 | |
61 | #define NFSDDBG_FACILITY NFSDDBG_XDR | |
62 | ||
42ca0993 BF |
63 | /* |
64 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing | |
65 | * directory in order to indicate to the client that a filesystem boundary is present | |
66 | * We use a fixed fsid for a referral | |
67 | */ | |
68 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL | |
69 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL | |
70 | ||
b37ad28b AV |
71 | static __be32 |
72 | check_filename(char *str, int len, __be32 err) | |
1da177e4 LT |
73 | { |
74 | int i; | |
75 | ||
76 | if (len == 0) | |
77 | return nfserr_inval; | |
78 | if (isdotent(str, len)) | |
79 | return err; | |
80 | for (i = 0; i < len; i++) | |
81 | if (str[i] == '/') | |
82 | return err; | |
83 | return 0; | |
84 | } | |
85 | ||
1da177e4 | 86 | #define DECODE_HEAD \ |
2ebbc012 | 87 | __be32 *p; \ |
b37ad28b | 88 | __be32 status |
1da177e4 LT |
89 | #define DECODE_TAIL \ |
90 | status = 0; \ | |
91 | out: \ | |
92 | return status; \ | |
93 | xdr_error: \ | |
817cb9d4 CL |
94 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
95 | __FILE__, __LINE__); \ | |
1da177e4 LT |
96 | status = nfserr_bad_xdr; \ |
97 | goto out | |
98 | ||
99 | #define READ32(x) (x) = ntohl(*p++) | |
100 | #define READ64(x) do { \ | |
101 | (x) = (u64)ntohl(*p++) << 32; \ | |
102 | (x) |= ntohl(*p++); \ | |
103 | } while (0) | |
104 | #define READTIME(x) do { \ | |
105 | p++; \ | |
106 | (x) = ntohl(*p++); \ | |
107 | p++; \ | |
108 | } while (0) | |
109 | #define READMEM(x,nbytes) do { \ | |
110 | x = (char *)p; \ | |
111 | p += XDR_QUADLEN(nbytes); \ | |
112 | } while (0) | |
113 | #define SAVEMEM(x,nbytes) do { \ | |
114 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
115 | savemem(argp, p, nbytes) : \ | |
116 | (char *)p)) { \ | |
817cb9d4 CL |
117 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
118 | __FILE__, __LINE__); \ | |
1da177e4 LT |
119 | goto xdr_error; \ |
120 | } \ | |
121 | p += XDR_QUADLEN(nbytes); \ | |
122 | } while (0) | |
123 | #define COPYMEM(x,nbytes) do { \ | |
124 | memcpy((x), p, nbytes); \ | |
125 | p += XDR_QUADLEN(nbytes); \ | |
126 | } while (0) | |
127 | ||
128 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ | |
129 | #define READ_BUF(nbytes) do { \ | |
130 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ | |
131 | p = argp->p; \ | |
132 | argp->p += XDR_QUADLEN(nbytes); \ | |
133 | } else if (!(p = read_buf(argp, nbytes))) { \ | |
817cb9d4 CL |
134 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
135 | __FILE__, __LINE__); \ | |
1da177e4 LT |
136 | goto xdr_error; \ |
137 | } \ | |
138 | } while (0) | |
139 | ||
ca2a05aa | 140 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
1da177e4 LT |
141 | { |
142 | /* We want more bytes than seem to be available. | |
143 | * Maybe we need a new page, maybe we have just run out | |
144 | */ | |
ca2a05aa | 145 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
2ebbc012 | 146 | __be32 *p; |
1da177e4 LT |
147 | if (avail + argp->pagelen < nbytes) |
148 | return NULL; | |
149 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ | |
150 | return NULL; | |
151 | /* ok, we can do it with the current plus the next page */ | |
152 | if (nbytes <= sizeof(argp->tmp)) | |
153 | p = argp->tmp; | |
154 | else { | |
f99d49ad | 155 | kfree(argp->tmpp); |
1da177e4 LT |
156 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
157 | if (!p) | |
158 | return NULL; | |
159 | ||
160 | } | |
ca2a05aa BF |
161 | /* |
162 | * The following memcpy is safe because read_buf is always | |
163 | * called with nbytes > avail, and the two cases above both | |
164 | * guarantee p points to at least nbytes bytes. | |
165 | */ | |
1da177e4 LT |
166 | memcpy(p, argp->p, avail); |
167 | /* step to next page */ | |
168 | argp->p = page_address(argp->pagelist[0]); | |
169 | argp->pagelist++; | |
170 | if (argp->pagelen < PAGE_SIZE) { | |
171 | argp->end = p + (argp->pagelen>>2); | |
172 | argp->pagelen = 0; | |
173 | } else { | |
174 | argp->end = p + (PAGE_SIZE>>2); | |
175 | argp->pagelen -= PAGE_SIZE; | |
176 | } | |
177 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); | |
178 | argp->p += XDR_QUADLEN(nbytes - avail); | |
179 | return p; | |
180 | } | |
181 | ||
60adfc50 AA |
182 | static int zero_clientid(clientid_t *clid) |
183 | { | |
184 | return (clid->cl_boot == 0) && (clid->cl_id == 0); | |
185 | } | |
186 | ||
1da177e4 LT |
187 | static int |
188 | defer_free(struct nfsd4_compoundargs *argp, | |
189 | void (*release)(const void *), void *p) | |
190 | { | |
191 | struct tmpbuf *tb; | |
192 | ||
193 | tb = kmalloc(sizeof(*tb), GFP_KERNEL); | |
194 | if (!tb) | |
195 | return -ENOMEM; | |
196 | tb->buf = p; | |
197 | tb->release = release; | |
198 | tb->next = argp->to_free; | |
199 | argp->to_free = tb; | |
200 | return 0; | |
201 | } | |
202 | ||
2ebbc012 | 203 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
1da177e4 | 204 | { |
1da177e4 | 205 | if (p == argp->tmp) { |
a4db5fe5 BF |
206 | p = kmalloc(nbytes, GFP_KERNEL); |
207 | if (!p) | |
208 | return NULL; | |
1da177e4 LT |
209 | memcpy(p, argp->tmp, nbytes); |
210 | } else { | |
73dff8be | 211 | BUG_ON(p != argp->tmpp); |
1da177e4 LT |
212 | argp->tmpp = NULL; |
213 | } | |
214 | if (defer_free(argp, kfree, p)) { | |
a4db5fe5 | 215 | kfree(p); |
1da177e4 LT |
216 | return NULL; |
217 | } else | |
218 | return (char *)p; | |
219 | } | |
220 | ||
b37ad28b | 221 | static __be32 |
1da177e4 LT |
222 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
223 | { | |
224 | u32 bmlen; | |
225 | DECODE_HEAD; | |
226 | ||
227 | bmval[0] = 0; | |
228 | bmval[1] = 0; | |
7e705706 | 229 | bmval[2] = 0; |
1da177e4 LT |
230 | |
231 | READ_BUF(4); | |
232 | READ32(bmlen); | |
233 | if (bmlen > 1000) | |
234 | goto xdr_error; | |
235 | ||
236 | READ_BUF(bmlen << 2); | |
237 | if (bmlen > 0) | |
238 | READ32(bmval[0]); | |
239 | if (bmlen > 1) | |
240 | READ32(bmval[1]); | |
7e705706 AA |
241 | if (bmlen > 2) |
242 | READ32(bmval[2]); | |
1da177e4 LT |
243 | |
244 | DECODE_TAIL; | |
245 | } | |
246 | ||
b37ad28b | 247 | static __be32 |
3c8e0316 | 248 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, |
c0d6fc8a | 249 | struct iattr *iattr, struct nfs4_acl **acl) |
1da177e4 LT |
250 | { |
251 | int expected_len, len = 0; | |
252 | u32 dummy32; | |
253 | char *buf; | |
b8dd7b9a | 254 | int host_err; |
1da177e4 LT |
255 | |
256 | DECODE_HEAD; | |
257 | iattr->ia_valid = 0; | |
258 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
259 | return status; | |
260 | ||
1da177e4 LT |
261 | READ_BUF(4); |
262 | READ32(expected_len); | |
263 | ||
264 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
265 | READ_BUF(8); | |
266 | len += 8; | |
267 | READ64(iattr->ia_size); | |
268 | iattr->ia_valid |= ATTR_SIZE; | |
269 | } | |
270 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
28e05dd8 BF |
271 | int nace; |
272 | struct nfs4_ace *ace; | |
1da177e4 LT |
273 | |
274 | READ_BUF(4); len += 4; | |
275 | READ32(nace); | |
276 | ||
28e05dd8 BF |
277 | if (nace > NFS4_ACL_MAX) |
278 | return nfserr_resource; | |
279 | ||
280 | *acl = nfs4_acl_new(nace); | |
1da177e4 | 281 | if (*acl == NULL) { |
b8dd7b9a | 282 | host_err = -ENOMEM; |
1da177e4 LT |
283 | goto out_nfserr; |
284 | } | |
28e05dd8 | 285 | defer_free(argp, kfree, *acl); |
1da177e4 | 286 | |
28e05dd8 BF |
287 | (*acl)->naces = nace; |
288 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { | |
1da177e4 | 289 | READ_BUF(16); len += 16; |
28e05dd8 BF |
290 | READ32(ace->type); |
291 | READ32(ace->flag); | |
292 | READ32(ace->access_mask); | |
1da177e4 LT |
293 | READ32(dummy32); |
294 | READ_BUF(dummy32); | |
295 | len += XDR_QUADLEN(dummy32) << 2; | |
296 | READMEM(buf, dummy32); | |
28e05dd8 | 297 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
b8dd7b9a | 298 | host_err = 0; |
28e05dd8 BF |
299 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
300 | ace->who = 0; | |
301 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) | |
b8dd7b9a | 302 | host_err = nfsd_map_name_to_gid(argp->rqstp, |
28e05dd8 | 303 | buf, dummy32, &ace->who); |
1da177e4 | 304 | else |
b8dd7b9a | 305 | host_err = nfsd_map_name_to_uid(argp->rqstp, |
28e05dd8 | 306 | buf, dummy32, &ace->who); |
b8dd7b9a | 307 | if (host_err) |
1da177e4 | 308 | goto out_nfserr; |
1da177e4 LT |
309 | } |
310 | } else | |
311 | *acl = NULL; | |
312 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
313 | READ_BUF(4); | |
314 | len += 4; | |
315 | READ32(iattr->ia_mode); | |
316 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); | |
317 | iattr->ia_valid |= ATTR_MODE; | |
318 | } | |
319 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
320 | READ_BUF(4); | |
321 | len += 4; | |
322 | READ32(dummy32); | |
323 | READ_BUF(dummy32); | |
324 | len += (XDR_QUADLEN(dummy32) << 2); | |
325 | READMEM(buf, dummy32); | |
b8dd7b9a | 326 | if ((host_err = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
1da177e4 LT |
327 | goto out_nfserr; |
328 | iattr->ia_valid |= ATTR_UID; | |
329 | } | |
330 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
331 | READ_BUF(4); | |
332 | len += 4; | |
333 | READ32(dummy32); | |
334 | READ_BUF(dummy32); | |
335 | len += (XDR_QUADLEN(dummy32) << 2); | |
336 | READMEM(buf, dummy32); | |
b8dd7b9a | 337 | if ((host_err = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
1da177e4 LT |
338 | goto out_nfserr; |
339 | iattr->ia_valid |= ATTR_GID; | |
340 | } | |
341 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
342 | READ_BUF(4); | |
343 | len += 4; | |
344 | READ32(dummy32); | |
345 | switch (dummy32) { | |
346 | case NFS4_SET_TO_CLIENT_TIME: | |
347 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
348 | all 32 bits of 'nseconds'. */ | |
349 | READ_BUF(12); | |
350 | len += 12; | |
351 | READ32(dummy32); | |
352 | if (dummy32) | |
353 | return nfserr_inval; | |
354 | READ32(iattr->ia_atime.tv_sec); | |
355 | READ32(iattr->ia_atime.tv_nsec); | |
356 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) | |
357 | return nfserr_inval; | |
358 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); | |
359 | break; | |
360 | case NFS4_SET_TO_SERVER_TIME: | |
361 | iattr->ia_valid |= ATTR_ATIME; | |
362 | break; | |
363 | default: | |
364 | goto xdr_error; | |
365 | } | |
366 | } | |
1da177e4 LT |
367 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
368 | READ_BUF(4); | |
369 | len += 4; | |
370 | READ32(dummy32); | |
371 | switch (dummy32) { | |
372 | case NFS4_SET_TO_CLIENT_TIME: | |
373 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
374 | all 32 bits of 'nseconds'. */ | |
375 | READ_BUF(12); | |
376 | len += 12; | |
377 | READ32(dummy32); | |
378 | if (dummy32) | |
379 | return nfserr_inval; | |
380 | READ32(iattr->ia_mtime.tv_sec); | |
381 | READ32(iattr->ia_mtime.tv_nsec); | |
382 | if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) | |
383 | return nfserr_inval; | |
384 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); | |
385 | break; | |
386 | case NFS4_SET_TO_SERVER_TIME: | |
387 | iattr->ia_valid |= ATTR_MTIME; | |
388 | break; | |
389 | default: | |
390 | goto xdr_error; | |
391 | } | |
392 | } | |
3c8e0316 YZ |
393 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
394 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 | |
395 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) | |
396 | READ_BUF(expected_len - len); | |
397 | else if (len != expected_len) | |
1da177e4 LT |
398 | goto xdr_error; |
399 | ||
400 | DECODE_TAIL; | |
401 | ||
402 | out_nfserr: | |
b8dd7b9a | 403 | status = nfserrno(host_err); |
1da177e4 LT |
404 | goto out; |
405 | } | |
406 | ||
e31a1b66 BH |
407 | static __be32 |
408 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
409 | { | |
410 | DECODE_HEAD; | |
411 | ||
412 | READ_BUF(sizeof(stateid_t)); | |
413 | READ32(sid->si_generation); | |
414 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
415 | ||
416 | DECODE_TAIL; | |
417 | } | |
418 | ||
b37ad28b | 419 | static __be32 |
1da177e4 LT |
420 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
421 | { | |
422 | DECODE_HEAD; | |
423 | ||
424 | READ_BUF(4); | |
425 | READ32(access->ac_req_access); | |
426 | ||
427 | DECODE_TAIL; | |
428 | } | |
429 | ||
b37ad28b | 430 | static __be32 |
1da177e4 LT |
431 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
432 | { | |
433 | DECODE_HEAD; | |
434 | ||
435 | close->cl_stateowner = NULL; | |
e31a1b66 | 436 | READ_BUF(4); |
1da177e4 | 437 | READ32(close->cl_seqid); |
e31a1b66 | 438 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
1da177e4 LT |
439 | |
440 | DECODE_TAIL; | |
441 | } | |
442 | ||
443 | ||
b37ad28b | 444 | static __be32 |
1da177e4 LT |
445 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
446 | { | |
447 | DECODE_HEAD; | |
448 | ||
449 | READ_BUF(12); | |
450 | READ64(commit->co_offset); | |
451 | READ32(commit->co_count); | |
452 | ||
453 | DECODE_TAIL; | |
454 | } | |
455 | ||
b37ad28b | 456 | static __be32 |
1da177e4 LT |
457 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
458 | { | |
459 | DECODE_HEAD; | |
460 | ||
461 | READ_BUF(4); | |
462 | READ32(create->cr_type); | |
463 | switch (create->cr_type) { | |
464 | case NF4LNK: | |
465 | READ_BUF(4); | |
466 | READ32(create->cr_linklen); | |
467 | READ_BUF(create->cr_linklen); | |
468 | SAVEMEM(create->cr_linkname, create->cr_linklen); | |
469 | break; | |
470 | case NF4BLK: | |
471 | case NF4CHR: | |
472 | READ_BUF(8); | |
473 | READ32(create->cr_specdata1); | |
474 | READ32(create->cr_specdata2); | |
475 | break; | |
476 | case NF4SOCK: | |
477 | case NF4FIFO: | |
478 | case NF4DIR: | |
479 | default: | |
480 | break; | |
481 | } | |
482 | ||
483 | READ_BUF(4); | |
484 | READ32(create->cr_namelen); | |
485 | READ_BUF(create->cr_namelen); | |
486 | SAVEMEM(create->cr_name, create->cr_namelen); | |
487 | if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval))) | |
488 | return status; | |
489 | ||
3c8e0316 YZ |
490 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
491 | &create->cr_acl); | |
c0d6fc8a | 492 | if (status) |
1da177e4 LT |
493 | goto out; |
494 | ||
495 | DECODE_TAIL; | |
496 | } | |
497 | ||
b37ad28b | 498 | static inline __be32 |
1da177e4 LT |
499 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
500 | { | |
e31a1b66 | 501 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
1da177e4 LT |
502 | } |
503 | ||
b37ad28b | 504 | static inline __be32 |
1da177e4 LT |
505 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
506 | { | |
507 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
508 | } | |
509 | ||
b37ad28b | 510 | static __be32 |
1da177e4 LT |
511 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
512 | { | |
513 | DECODE_HEAD; | |
514 | ||
515 | READ_BUF(4); | |
516 | READ32(link->li_namelen); | |
517 | READ_BUF(link->li_namelen); | |
518 | SAVEMEM(link->li_name, link->li_namelen); | |
519 | if ((status = check_filename(link->li_name, link->li_namelen, nfserr_inval))) | |
520 | return status; | |
521 | ||
522 | DECODE_TAIL; | |
523 | } | |
524 | ||
b37ad28b | 525 | static __be32 |
1da177e4 LT |
526 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
527 | { | |
528 | DECODE_HEAD; | |
529 | ||
3a65588a | 530 | lock->lk_replay_owner = NULL; |
1da177e4 LT |
531 | /* |
532 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
533 | */ | |
534 | READ_BUF(28); | |
535 | READ32(lock->lk_type); | |
536 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) | |
537 | goto xdr_error; | |
538 | READ32(lock->lk_reclaim); | |
539 | READ64(lock->lk_offset); | |
540 | READ64(lock->lk_length); | |
541 | READ32(lock->lk_is_new); | |
542 | ||
543 | if (lock->lk_is_new) { | |
e31a1b66 | 544 | READ_BUF(4); |
1da177e4 | 545 | READ32(lock->lk_new_open_seqid); |
e31a1b66 BH |
546 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
547 | if (status) | |
548 | return status; | |
549 | READ_BUF(8 + sizeof(clientid_t)); | |
1da177e4 LT |
550 | READ32(lock->lk_new_lock_seqid); |
551 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); | |
552 | READ32(lock->lk_new_owner.len); | |
553 | READ_BUF(lock->lk_new_owner.len); | |
554 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
555 | } else { | |
e31a1b66 BH |
556 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
557 | if (status) | |
558 | return status; | |
559 | READ_BUF(4); | |
1da177e4 LT |
560 | READ32(lock->lk_old_lock_seqid); |
561 | } | |
562 | ||
563 | DECODE_TAIL; | |
564 | } | |
565 | ||
b37ad28b | 566 | static __be32 |
1da177e4 LT |
567 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
568 | { | |
569 | DECODE_HEAD; | |
570 | ||
571 | READ_BUF(32); | |
572 | READ32(lockt->lt_type); | |
573 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) | |
574 | goto xdr_error; | |
575 | READ64(lockt->lt_offset); | |
576 | READ64(lockt->lt_length); | |
577 | COPYMEM(&lockt->lt_clientid, 8); | |
578 | READ32(lockt->lt_owner.len); | |
579 | READ_BUF(lockt->lt_owner.len); | |
580 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
581 | ||
60adfc50 AA |
582 | if (argp->minorversion && !zero_clientid(&lockt->lt_clientid)) |
583 | return nfserr_inval; | |
1da177e4 LT |
584 | DECODE_TAIL; |
585 | } | |
586 | ||
b37ad28b | 587 | static __be32 |
1da177e4 LT |
588 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
589 | { | |
590 | DECODE_HEAD; | |
591 | ||
592 | locku->lu_stateowner = NULL; | |
e31a1b66 | 593 | READ_BUF(8); |
1da177e4 LT |
594 | READ32(locku->lu_type); |
595 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) | |
596 | goto xdr_error; | |
597 | READ32(locku->lu_seqid); | |
e31a1b66 BH |
598 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
599 | if (status) | |
600 | return status; | |
601 | READ_BUF(16); | |
1da177e4 LT |
602 | READ64(locku->lu_offset); |
603 | READ64(locku->lu_length); | |
604 | ||
605 | DECODE_TAIL; | |
606 | } | |
607 | ||
b37ad28b | 608 | static __be32 |
1da177e4 LT |
609 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
610 | { | |
611 | DECODE_HEAD; | |
612 | ||
613 | READ_BUF(4); | |
614 | READ32(lookup->lo_len); | |
615 | READ_BUF(lookup->lo_len); | |
616 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
617 | if ((status = check_filename(lookup->lo_name, lookup->lo_len, nfserr_noent))) | |
618 | return status; | |
619 | ||
620 | DECODE_TAIL; | |
621 | } | |
622 | ||
b37ad28b | 623 | static __be32 |
1da177e4 LT |
624 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
625 | { | |
626 | DECODE_HEAD; | |
627 | ||
628 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
629 | open->op_iattr.ia_valid = 0; | |
630 | open->op_stateowner = NULL; | |
631 | ||
632 | /* seqid, share_access, share_deny, clientid, ownerlen */ | |
633 | READ_BUF(16 + sizeof(clientid_t)); | |
634 | READ32(open->op_seqid); | |
635 | READ32(open->op_share_access); | |
636 | READ32(open->op_share_deny); | |
637 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); | |
638 | READ32(open->op_owner.len); | |
639 | ||
640 | /* owner, open_flag */ | |
641 | READ_BUF(open->op_owner.len + 4); | |
642 | SAVEMEM(open->op_owner.data, open->op_owner.len); | |
643 | READ32(open->op_create); | |
644 | switch (open->op_create) { | |
645 | case NFS4_OPEN_NOCREATE: | |
646 | break; | |
647 | case NFS4_OPEN_CREATE: | |
648 | READ_BUF(4); | |
649 | READ32(open->op_createmode); | |
650 | switch (open->op_createmode) { | |
651 | case NFS4_CREATE_UNCHECKED: | |
652 | case NFS4_CREATE_GUARDED: | |
c0d6fc8a | 653 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
3c8e0316 | 654 | &open->op_iattr, &open->op_acl); |
c0d6fc8a | 655 | if (status) |
1da177e4 LT |
656 | goto out; |
657 | break; | |
658 | case NFS4_CREATE_EXCLUSIVE: | |
659 | READ_BUF(8); | |
660 | COPYMEM(open->op_verf.data, 8); | |
661 | break; | |
79fb54ab BH |
662 | case NFS4_CREATE_EXCLUSIVE4_1: |
663 | if (argp->minorversion < 1) | |
664 | goto xdr_error; | |
665 | READ_BUF(8); | |
666 | COPYMEM(open->op_verf.data, 8); | |
667 | status = nfsd4_decode_fattr(argp, open->op_bmval, | |
3c8e0316 | 668 | &open->op_iattr, &open->op_acl); |
79fb54ab BH |
669 | if (status) |
670 | goto out; | |
671 | break; | |
1da177e4 LT |
672 | default: |
673 | goto xdr_error; | |
674 | } | |
675 | break; | |
676 | default: | |
677 | goto xdr_error; | |
678 | } | |
679 | ||
680 | /* open_claim */ | |
681 | READ_BUF(4); | |
682 | READ32(open->op_claim_type); | |
683 | switch (open->op_claim_type) { | |
684 | case NFS4_OPEN_CLAIM_NULL: | |
685 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
686 | READ_BUF(4); | |
687 | READ32(open->op_fname.len); | |
688 | READ_BUF(open->op_fname.len); | |
689 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
690 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) | |
691 | return status; | |
692 | break; | |
693 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
694 | READ_BUF(4); | |
695 | READ32(open->op_delegate_type); | |
696 | break; | |
697 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
e31a1b66 BH |
698 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
699 | if (status) | |
700 | return status; | |
701 | READ_BUF(4); | |
1da177e4 LT |
702 | READ32(open->op_fname.len); |
703 | READ_BUF(open->op_fname.len); | |
704 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
705 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) | |
706 | return status; | |
707 | break; | |
708 | default: | |
709 | goto xdr_error; | |
710 | } | |
711 | ||
712 | DECODE_TAIL; | |
713 | } | |
714 | ||
b37ad28b | 715 | static __be32 |
1da177e4 LT |
716 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
717 | { | |
718 | DECODE_HEAD; | |
719 | ||
720 | open_conf->oc_stateowner = NULL; | |
e31a1b66 BH |
721 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
722 | if (status) | |
723 | return status; | |
724 | READ_BUF(4); | |
1da177e4 LT |
725 | READ32(open_conf->oc_seqid); |
726 | ||
727 | DECODE_TAIL; | |
728 | } | |
729 | ||
b37ad28b | 730 | static __be32 |
1da177e4 LT |
731 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
732 | { | |
733 | DECODE_HEAD; | |
734 | ||
735 | open_down->od_stateowner = NULL; | |
e31a1b66 BH |
736 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
737 | if (status) | |
738 | return status; | |
739 | READ_BUF(12); | |
1da177e4 LT |
740 | READ32(open_down->od_seqid); |
741 | READ32(open_down->od_share_access); | |
742 | READ32(open_down->od_share_deny); | |
743 | ||
744 | DECODE_TAIL; | |
745 | } | |
746 | ||
b37ad28b | 747 | static __be32 |
1da177e4 LT |
748 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
749 | { | |
750 | DECODE_HEAD; | |
751 | ||
752 | READ_BUF(4); | |
753 | READ32(putfh->pf_fhlen); | |
754 | if (putfh->pf_fhlen > NFS4_FHSIZE) | |
755 | goto xdr_error; | |
756 | READ_BUF(putfh->pf_fhlen); | |
757 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
758 | ||
759 | DECODE_TAIL; | |
760 | } | |
761 | ||
b37ad28b | 762 | static __be32 |
1da177e4 LT |
763 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
764 | { | |
765 | DECODE_HEAD; | |
766 | ||
e31a1b66 BH |
767 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
768 | if (status) | |
769 | return status; | |
770 | READ_BUF(12); | |
1da177e4 LT |
771 | READ64(read->rd_offset); |
772 | READ32(read->rd_length); | |
773 | ||
774 | DECODE_TAIL; | |
775 | } | |
776 | ||
b37ad28b | 777 | static __be32 |
1da177e4 LT |
778 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
779 | { | |
780 | DECODE_HEAD; | |
781 | ||
782 | READ_BUF(24); | |
783 | READ64(readdir->rd_cookie); | |
784 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); | |
785 | READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ | |
786 | READ32(readdir->rd_maxcount); | |
787 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) | |
788 | goto out; | |
789 | ||
790 | DECODE_TAIL; | |
791 | } | |
792 | ||
b37ad28b | 793 | static __be32 |
1da177e4 LT |
794 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
795 | { | |
796 | DECODE_HEAD; | |
797 | ||
798 | READ_BUF(4); | |
799 | READ32(remove->rm_namelen); | |
800 | READ_BUF(remove->rm_namelen); | |
801 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
802 | if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent))) | |
803 | return status; | |
804 | ||
805 | DECODE_TAIL; | |
806 | } | |
807 | ||
b37ad28b | 808 | static __be32 |
1da177e4 LT |
809 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
810 | { | |
811 | DECODE_HEAD; | |
812 | ||
813 | READ_BUF(4); | |
814 | READ32(rename->rn_snamelen); | |
815 | READ_BUF(rename->rn_snamelen + 4); | |
816 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); | |
817 | READ32(rename->rn_tnamelen); | |
818 | READ_BUF(rename->rn_tnamelen); | |
819 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
820 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent))) | |
821 | return status; | |
822 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval))) | |
823 | return status; | |
824 | ||
825 | DECODE_TAIL; | |
826 | } | |
827 | ||
b37ad28b | 828 | static __be32 |
1da177e4 LT |
829 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
830 | { | |
831 | DECODE_HEAD; | |
832 | ||
833 | READ_BUF(sizeof(clientid_t)); | |
834 | COPYMEM(clientid, sizeof(clientid_t)); | |
835 | ||
836 | DECODE_TAIL; | |
837 | } | |
838 | ||
dcb488a3 AA |
839 | static __be32 |
840 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
841 | struct nfsd4_secinfo *secinfo) | |
842 | { | |
843 | DECODE_HEAD; | |
844 | ||
845 | READ_BUF(4); | |
846 | READ32(secinfo->si_namelen); | |
847 | READ_BUF(secinfo->si_namelen); | |
848 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
849 | status = check_filename(secinfo->si_name, secinfo->si_namelen, | |
850 | nfserr_noent); | |
851 | if (status) | |
852 | return status; | |
853 | DECODE_TAIL; | |
854 | } | |
855 | ||
b37ad28b | 856 | static __be32 |
1da177e4 LT |
857 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
858 | { | |
e31a1b66 | 859 | __be32 status; |
1da177e4 | 860 | |
e31a1b66 BH |
861 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
862 | if (status) | |
863 | return status; | |
3c8e0316 YZ |
864 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
865 | &setattr->sa_acl); | |
1da177e4 LT |
866 | } |
867 | ||
b37ad28b | 868 | static __be32 |
1da177e4 LT |
869 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
870 | { | |
871 | DECODE_HEAD; | |
872 | ||
873 | READ_BUF(12); | |
874 | COPYMEM(setclientid->se_verf.data, 8); | |
875 | READ32(setclientid->se_namelen); | |
876 | ||
877 | READ_BUF(setclientid->se_namelen + 8); | |
878 | SAVEMEM(setclientid->se_name, setclientid->se_namelen); | |
879 | READ32(setclientid->se_callback_prog); | |
880 | READ32(setclientid->se_callback_netid_len); | |
881 | ||
882 | READ_BUF(setclientid->se_callback_netid_len + 4); | |
883 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); | |
884 | READ32(setclientid->se_callback_addr_len); | |
885 | ||
886 | READ_BUF(setclientid->se_callback_addr_len + 4); | |
887 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); | |
888 | READ32(setclientid->se_callback_ident); | |
889 | ||
890 | DECODE_TAIL; | |
891 | } | |
892 | ||
b37ad28b | 893 | static __be32 |
1da177e4 LT |
894 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
895 | { | |
896 | DECODE_HEAD; | |
897 | ||
898 | READ_BUF(8 + sizeof(nfs4_verifier)); | |
899 | COPYMEM(&scd_c->sc_clientid, 8); | |
900 | COPYMEM(&scd_c->sc_confirm, sizeof(nfs4_verifier)); | |
901 | ||
902 | DECODE_TAIL; | |
903 | } | |
904 | ||
905 | /* Also used for NVERIFY */ | |
b37ad28b | 906 | static __be32 |
1da177e4 LT |
907 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
908 | { | |
909 | #if 0 | |
910 | struct nfsd4_compoundargs save = { | |
911 | .p = argp->p, | |
912 | .end = argp->end, | |
913 | .rqstp = argp->rqstp, | |
914 | }; | |
915 | u32 ve_bmval[2]; | |
916 | struct iattr ve_iattr; /* request */ | |
917 | struct nfs4_acl *ve_acl; /* request */ | |
918 | #endif | |
919 | DECODE_HEAD; | |
920 | ||
921 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
922 | goto out; | |
923 | ||
924 | /* For convenience's sake, we compare raw xdr'd attributes in | |
925 | * nfsd4_proc_verify; however we still decode here just to return | |
926 | * correct error in case of bad xdr. */ | |
927 | #if 0 | |
928 | status = nfsd4_decode_fattr(ve_bmval, &ve_iattr, &ve_acl); | |
929 | if (status == nfserr_inval) { | |
930 | status = nfserrno(status); | |
931 | goto out; | |
932 | } | |
933 | #endif | |
934 | READ_BUF(4); | |
935 | READ32(verify->ve_attrlen); | |
936 | READ_BUF(verify->ve_attrlen); | |
937 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
938 | ||
939 | DECODE_TAIL; | |
940 | } | |
941 | ||
b37ad28b | 942 | static __be32 |
1da177e4 LT |
943 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
944 | { | |
945 | int avail; | |
946 | int v; | |
947 | int len; | |
948 | DECODE_HEAD; | |
949 | ||
e31a1b66 BH |
950 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
951 | if (status) | |
952 | return status; | |
953 | READ_BUF(16); | |
1da177e4 LT |
954 | READ64(write->wr_offset); |
955 | READ32(write->wr_stable_how); | |
956 | if (write->wr_stable_how > 2) | |
957 | goto xdr_error; | |
958 | READ32(write->wr_buflen); | |
959 | ||
960 | /* Sorry .. no magic macros for this.. * | |
961 | * READ_BUF(write->wr_buflen); | |
962 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
963 | */ | |
964 | avail = (char*)argp->end - (char*)argp->p; | |
965 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
966 | dprintk("NFSD: xdr error (%s:%d)\n", |
967 | __FILE__, __LINE__); | |
1da177e4 LT |
968 | goto xdr_error; |
969 | } | |
3cc03b16 N |
970 | argp->rqstp->rq_vec[0].iov_base = p; |
971 | argp->rqstp->rq_vec[0].iov_len = avail; | |
1da177e4 LT |
972 | v = 0; |
973 | len = write->wr_buflen; | |
3cc03b16 N |
974 | while (len > argp->rqstp->rq_vec[v].iov_len) { |
975 | len -= argp->rqstp->rq_vec[v].iov_len; | |
1da177e4 | 976 | v++; |
3cc03b16 | 977 | argp->rqstp->rq_vec[v].iov_base = page_address(argp->pagelist[0]); |
1da177e4 LT |
978 | argp->pagelist++; |
979 | if (argp->pagelen >= PAGE_SIZE) { | |
3cc03b16 | 980 | argp->rqstp->rq_vec[v].iov_len = PAGE_SIZE; |
1da177e4 LT |
981 | argp->pagelen -= PAGE_SIZE; |
982 | } else { | |
3cc03b16 | 983 | argp->rqstp->rq_vec[v].iov_len = argp->pagelen; |
1da177e4 LT |
984 | argp->pagelen -= len; |
985 | } | |
986 | } | |
2ebbc012 AV |
987 | argp->end = (__be32*) (argp->rqstp->rq_vec[v].iov_base + argp->rqstp->rq_vec[v].iov_len); |
988 | argp->p = (__be32*) (argp->rqstp->rq_vec[v].iov_base + (XDR_QUADLEN(len) << 2)); | |
3cc03b16 | 989 | argp->rqstp->rq_vec[v].iov_len = len; |
1da177e4 LT |
990 | write->wr_vlen = v+1; |
991 | ||
992 | DECODE_TAIL; | |
993 | } | |
994 | ||
b37ad28b | 995 | static __be32 |
1da177e4 LT |
996 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
997 | { | |
998 | DECODE_HEAD; | |
999 | ||
1000 | READ_BUF(12); | |
1001 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
1002 | READ32(rlockowner->rl_owner.len); | |
1003 | READ_BUF(rlockowner->rl_owner.len); | |
1004 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
1005 | ||
60adfc50 AA |
1006 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1007 | return nfserr_inval; | |
1da177e4 LT |
1008 | DECODE_TAIL; |
1009 | } | |
1010 | ||
2db134eb AA |
1011 | static __be32 |
1012 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1013 | struct nfsd4_exchange_id *exid) |
2db134eb | 1014 | { |
0733d213 AA |
1015 | int dummy; |
1016 | DECODE_HEAD; | |
1017 | ||
1018 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1019 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1020 | ||
1021 | READ_BUF(4); | |
1022 | READ32(exid->clname.len); | |
1023 | ||
1024 | READ_BUF(exid->clname.len); | |
1025 | SAVEMEM(exid->clname.data, exid->clname.len); | |
1026 | ||
1027 | READ_BUF(4); | |
1028 | READ32(exid->flags); | |
1029 | ||
1030 | /* Ignore state_protect4_a */ | |
1031 | READ_BUF(4); | |
1032 | READ32(exid->spa_how); | |
1033 | switch (exid->spa_how) { | |
1034 | case SP4_NONE: | |
1035 | break; | |
1036 | case SP4_MACH_CRED: | |
1037 | /* spo_must_enforce */ | |
1038 | READ_BUF(4); | |
1039 | READ32(dummy); | |
1040 | READ_BUF(dummy * 4); | |
1041 | p += dummy; | |
1042 | ||
1043 | /* spo_must_allow */ | |
1044 | READ_BUF(4); | |
1045 | READ32(dummy); | |
1046 | READ_BUF(dummy * 4); | |
1047 | p += dummy; | |
1048 | break; | |
1049 | case SP4_SSV: | |
1050 | /* ssp_ops */ | |
1051 | READ_BUF(4); | |
1052 | READ32(dummy); | |
1053 | READ_BUF(dummy * 4); | |
1054 | p += dummy; | |
1055 | ||
1056 | READ_BUF(4); | |
1057 | READ32(dummy); | |
1058 | READ_BUF(dummy * 4); | |
1059 | p += dummy; | |
1060 | ||
1061 | /* ssp_hash_algs<> */ | |
1062 | READ_BUF(4); | |
1063 | READ32(dummy); | |
1064 | READ_BUF(dummy); | |
1065 | p += XDR_QUADLEN(dummy); | |
1066 | ||
1067 | /* ssp_encr_algs<> */ | |
1068 | READ_BUF(4); | |
1069 | READ32(dummy); | |
1070 | READ_BUF(dummy); | |
1071 | p += XDR_QUADLEN(dummy); | |
1072 | ||
1073 | /* ssp_window and ssp_num_gss_handles */ | |
1074 | READ_BUF(8); | |
1075 | READ32(dummy); | |
1076 | READ32(dummy); | |
1077 | break; | |
1078 | default: | |
1079 | goto xdr_error; | |
1080 | } | |
1081 | ||
1082 | /* Ignore Implementation ID */ | |
1083 | READ_BUF(4); /* nfs_impl_id4 array length */ | |
1084 | READ32(dummy); | |
1085 | ||
1086 | if (dummy > 1) | |
1087 | goto xdr_error; | |
1088 | ||
1089 | if (dummy == 1) { | |
1090 | /* nii_domain */ | |
1091 | READ_BUF(4); | |
1092 | READ32(dummy); | |
1093 | READ_BUF(dummy); | |
1094 | p += XDR_QUADLEN(dummy); | |
1095 | ||
1096 | /* nii_name */ | |
1097 | READ_BUF(4); | |
1098 | READ32(dummy); | |
1099 | READ_BUF(dummy); | |
1100 | p += XDR_QUADLEN(dummy); | |
1101 | ||
1102 | /* nii_date */ | |
1103 | READ_BUF(12); | |
1104 | p += 3; | |
1105 | } | |
1106 | DECODE_TAIL; | |
2db134eb AA |
1107 | } |
1108 | ||
1109 | static __be32 | |
1110 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1111 | struct nfsd4_create_session *sess) | |
1112 | { | |
ec6b5d7b AA |
1113 | DECODE_HEAD; |
1114 | ||
1115 | u32 dummy; | |
1116 | char *machine_name; | |
1117 | int i; | |
1118 | int nr_secflavs; | |
1119 | ||
1120 | READ_BUF(16); | |
1121 | COPYMEM(&sess->clientid, 8); | |
1122 | READ32(sess->seqid); | |
1123 | READ32(sess->flags); | |
1124 | ||
1125 | /* Fore channel attrs */ | |
1126 | READ_BUF(28); | |
1127 | READ32(dummy); /* headerpadsz is always 0 */ | |
1128 | READ32(sess->fore_channel.maxreq_sz); | |
1129 | READ32(sess->fore_channel.maxresp_sz); | |
1130 | READ32(sess->fore_channel.maxresp_cached); | |
1131 | READ32(sess->fore_channel.maxops); | |
1132 | READ32(sess->fore_channel.maxreqs); | |
1133 | READ32(sess->fore_channel.nr_rdma_attrs); | |
1134 | if (sess->fore_channel.nr_rdma_attrs == 1) { | |
1135 | READ_BUF(4); | |
1136 | READ32(sess->fore_channel.rdma_attrs); | |
1137 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { | |
1138 | dprintk("Too many fore channel attr bitmaps!\n"); | |
1139 | goto xdr_error; | |
1140 | } | |
1141 | ||
1142 | /* Back channel attrs */ | |
1143 | READ_BUF(28); | |
1144 | READ32(dummy); /* headerpadsz is always 0 */ | |
1145 | READ32(sess->back_channel.maxreq_sz); | |
1146 | READ32(sess->back_channel.maxresp_sz); | |
1147 | READ32(sess->back_channel.maxresp_cached); | |
1148 | READ32(sess->back_channel.maxops); | |
1149 | READ32(sess->back_channel.maxreqs); | |
1150 | READ32(sess->back_channel.nr_rdma_attrs); | |
1151 | if (sess->back_channel.nr_rdma_attrs == 1) { | |
1152 | READ_BUF(4); | |
1153 | READ32(sess->back_channel.rdma_attrs); | |
1154 | } else if (sess->back_channel.nr_rdma_attrs > 1) { | |
1155 | dprintk("Too many back channel attr bitmaps!\n"); | |
1156 | goto xdr_error; | |
1157 | } | |
1158 | ||
1159 | READ_BUF(8); | |
1160 | READ32(sess->callback_prog); | |
1161 | ||
1162 | /* callback_sec_params4 */ | |
1163 | READ32(nr_secflavs); | |
1164 | for (i = 0; i < nr_secflavs; ++i) { | |
1165 | READ_BUF(4); | |
1166 | READ32(dummy); | |
1167 | switch (dummy) { | |
1168 | case RPC_AUTH_NULL: | |
1169 | /* Nothing to read */ | |
1170 | break; | |
1171 | case RPC_AUTH_UNIX: | |
1172 | READ_BUF(8); | |
1173 | /* stamp */ | |
1174 | READ32(dummy); | |
1175 | ||
1176 | /* machine name */ | |
1177 | READ32(dummy); | |
1178 | READ_BUF(dummy); | |
1179 | SAVEMEM(machine_name, dummy); | |
1180 | ||
1181 | /* uid, gid */ | |
1182 | READ_BUF(8); | |
1183 | READ32(sess->uid); | |
1184 | READ32(sess->gid); | |
1185 | ||
1186 | /* more gids */ | |
1187 | READ_BUF(4); | |
1188 | READ32(dummy); | |
1189 | READ_BUF(dummy * 4); | |
1190 | for (i = 0; i < dummy; ++i) | |
1191 | READ32(dummy); | |
1192 | break; | |
1193 | case RPC_AUTH_GSS: | |
1194 | dprintk("RPC_AUTH_GSS callback secflavor " | |
1195 | "not supported!\n"); | |
1196 | READ_BUF(8); | |
1197 | /* gcbp_service */ | |
1198 | READ32(dummy); | |
1199 | /* gcbp_handle_from_server */ | |
1200 | READ32(dummy); | |
1201 | READ_BUF(dummy); | |
1202 | p += XDR_QUADLEN(dummy); | |
1203 | /* gcbp_handle_from_client */ | |
1204 | READ_BUF(4); | |
1205 | READ32(dummy); | |
1206 | READ_BUF(dummy); | |
1207 | p += XDR_QUADLEN(dummy); | |
1208 | break; | |
1209 | default: | |
1210 | dprintk("Illegal callback secflavor\n"); | |
1211 | return nfserr_inval; | |
1212 | } | |
1213 | } | |
1214 | DECODE_TAIL; | |
2db134eb AA |
1215 | } |
1216 | ||
1217 | static __be32 | |
1218 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, | |
1219 | struct nfsd4_destroy_session *destroy_session) | |
1220 | { | |
e10e0cfc BH |
1221 | DECODE_HEAD; |
1222 | READ_BUF(NFS4_MAX_SESSIONID_LEN); | |
1223 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1224 | ||
1225 | DECODE_TAIL; | |
2db134eb AA |
1226 | } |
1227 | ||
1228 | static __be32 | |
1229 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, | |
1230 | struct nfsd4_sequence *seq) | |
1231 | { | |
b85d4c01 BH |
1232 | DECODE_HEAD; |
1233 | ||
1234 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); | |
1235 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1236 | READ32(seq->seqid); | |
1237 | READ32(seq->slotid); | |
1238 | READ32(seq->maxslots); | |
1239 | READ32(seq->cachethis); | |
1240 | ||
1241 | DECODE_TAIL; | |
2db134eb AA |
1242 | } |
1243 | ||
347e0ad9 BH |
1244 | static __be32 |
1245 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1246 | { | |
1247 | return nfs_ok; | |
1248 | } | |
1249 | ||
3c375c6f BH |
1250 | static __be32 |
1251 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1252 | { | |
1e685ec2 | 1253 | return nfserr_notsupp; |
3c375c6f BH |
1254 | } |
1255 | ||
347e0ad9 BH |
1256 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1257 | ||
1258 | static nfsd4_dec nfsd4_dec_ops[] = { | |
ad1060c8 BF |
1259 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1260 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1261 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1262 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1263 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1264 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1265 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1266 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1267 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1268 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1269 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1270 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1271 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1272 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1273 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1274 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1275 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1276 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1277 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1278 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
a1c8c4d1 | 1279 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_noop, |
ad1060c8 BF |
1280 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1281 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1282 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1283 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1284 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1285 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1286 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1287 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1288 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1289 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1290 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1291 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1292 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1293 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1294 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1295 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
347e0ad9 BH |
1296 | }; |
1297 | ||
2db134eb | 1298 | static nfsd4_dec nfsd41_dec_ops[] = { |
9064caae RD |
1299 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1300 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1301 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1302 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1303 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1304 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1305 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1306 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1307 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1308 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1309 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1310 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1311 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1312 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1313 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1314 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1315 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1316 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1317 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1318 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
1319 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1320 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1321 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1322 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1323 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1324 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1325 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1326 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1327 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1328 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1329 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1330 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1331 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1332 | [OP_SETCLIENTID_CONFIRM]= (nfsd4_dec)nfsd4_decode_notsupp, | |
1333 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1334 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1335 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_notsupp, | |
2db134eb AA |
1336 | |
1337 | /* new operations for NFSv4.1 */ | |
9064caae RD |
1338 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_notsupp, |
1339 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_notsupp, | |
1340 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, | |
1341 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
1342 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
1343 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1344 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1345 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1346 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1347 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1348 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1349 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1350 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1351 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, | |
1352 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1353 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1354 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1355 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1356 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
2db134eb AA |
1357 | }; |
1358 | ||
f2feb96b BH |
1359 | struct nfsd4_minorversion_ops { |
1360 | nfsd4_dec *decoders; | |
1361 | int nops; | |
1362 | }; | |
1363 | ||
1364 | static struct nfsd4_minorversion_ops nfsd4_minorversion[] = { | |
ad1060c8 | 1365 | [0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) }, |
2db134eb | 1366 | [1] = { nfsd41_dec_ops, ARRAY_SIZE(nfsd41_dec_ops) }, |
f2feb96b BH |
1367 | }; |
1368 | ||
b37ad28b | 1369 | static __be32 |
1da177e4 LT |
1370 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1371 | { | |
1372 | DECODE_HEAD; | |
1373 | struct nfsd4_op *op; | |
f2feb96b | 1374 | struct nfsd4_minorversion_ops *ops; |
1da177e4 LT |
1375 | int i; |
1376 | ||
1377 | /* | |
1378 | * XXX: According to spec, we should check the tag | |
1379 | * for UTF-8 compliance. I'm postponing this for | |
1380 | * now because it seems that some clients do use | |
1381 | * binary tags. | |
1382 | */ | |
1383 | READ_BUF(4); | |
1384 | READ32(argp->taglen); | |
1385 | READ_BUF(argp->taglen + 8); | |
1386 | SAVEMEM(argp->tag, argp->taglen); | |
1387 | READ32(argp->minorversion); | |
1388 | READ32(argp->opcnt); | |
1389 | ||
1390 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1391 | goto xdr_error; | |
1392 | if (argp->opcnt > 100) | |
1393 | goto xdr_error; | |
1394 | ||
e8c96f8c | 1395 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
1da177e4 LT |
1396 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1397 | if (!argp->ops) { | |
1398 | argp->ops = argp->iops; | |
817cb9d4 | 1399 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1400 | goto xdr_error; |
1401 | } | |
1402 | } | |
1403 | ||
f2feb96b | 1404 | if (argp->minorversion >= ARRAY_SIZE(nfsd4_minorversion)) |
30cff1ff BH |
1405 | argp->opcnt = 0; |
1406 | ||
f2feb96b | 1407 | ops = &nfsd4_minorversion[argp->minorversion]; |
1da177e4 LT |
1408 | for (i = 0; i < argp->opcnt; i++) { |
1409 | op = &argp->ops[i]; | |
1410 | op->replay = NULL; | |
1411 | ||
1412 | /* | |
1413 | * We can't use READ_BUF() here because we need to handle | |
1414 | * a missing opcode as an OP_WRITE + 1. So we need to check | |
1415 | * to see if we're truly at the end of our buffer or if there | |
1416 | * is another page we need to flip to. | |
1417 | */ | |
1418 | ||
1419 | if (argp->p == argp->end) { | |
1420 | if (argp->pagelen < 4) { | |
1421 | /* There isn't an opcode still on the wire */ | |
1422 | op->opnum = OP_WRITE + 1; | |
1423 | op->status = nfserr_bad_xdr; | |
1424 | argp->opcnt = i+1; | |
1425 | break; | |
1426 | } | |
1427 | ||
1428 | /* | |
1429 | * False alarm. We just hit a page boundary, but there | |
1430 | * is still data available. Move pointer across page | |
1431 | * boundary. *snip from READ_BUF* | |
1432 | */ | |
1433 | argp->p = page_address(argp->pagelist[0]); | |
1434 | argp->pagelist++; | |
1435 | if (argp->pagelen < PAGE_SIZE) { | |
1436 | argp->end = p + (argp->pagelen>>2); | |
1437 | argp->pagelen = 0; | |
1438 | } else { | |
1439 | argp->end = p + (PAGE_SIZE>>2); | |
1440 | argp->pagelen -= PAGE_SIZE; | |
1441 | } | |
1442 | } | |
1443 | op->opnum = ntohl(*argp->p++); | |
1444 | ||
f2feb96b BH |
1445 | if (op->opnum >= OP_ACCESS && op->opnum < ops->nops) |
1446 | op->status = ops->decoders[op->opnum](argp, &op->u); | |
347e0ad9 | 1447 | else { |
1da177e4 LT |
1448 | op->opnum = OP_ILLEGAL; |
1449 | op->status = nfserr_op_illegal; | |
1da177e4 LT |
1450 | } |
1451 | ||
1452 | if (op->status) { | |
1453 | argp->opcnt = i+1; | |
1454 | break; | |
1455 | } | |
1456 | } | |
1457 | ||
1458 | DECODE_TAIL; | |
1459 | } | |
1da177e4 | 1460 | |
1da177e4 LT |
1461 | #define WRITE32(n) *p++ = htonl(n) |
1462 | #define WRITE64(n) do { \ | |
1463 | *p++ = htonl((u32)((n) >> 32)); \ | |
1464 | *p++ = htonl((u32)(n)); \ | |
1465 | } while (0) | |
5108b276 | 1466 | #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \ |
1da177e4 LT |
1467 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ |
1468 | memcpy(p, ptr, nbytes); \ | |
1469 | p += XDR_QUADLEN(nbytes); \ | |
5108b276 | 1470 | }} while (0) |
c654b8a9 BF |
1471 | |
1472 | static void write32(__be32 **p, u32 n) | |
1473 | { | |
1474 | *(*p)++ = n; | |
1475 | } | |
1476 | ||
1477 | static void write64(__be32 **p, u64 n) | |
1478 | { | |
1479 | write32(p, (u32)(n >> 32)); | |
1480 | write32(p, (u32)n); | |
1481 | } | |
1482 | ||
1483 | static void write_change(__be32 **p, struct kstat *stat, struct inode *inode) | |
1484 | { | |
1485 | if (IS_I_VERSION(inode)) { | |
1486 | write64(p, inode->i_version); | |
1487 | } else { | |
1488 | write32(p, stat->ctime.tv_sec); | |
1489 | write32(p, stat->ctime.tv_nsec); | |
1490 | } | |
1491 | } | |
1492 | ||
1493 | static void write_cinfo(__be32 **p, struct nfsd4_change_info *c) | |
1494 | { | |
1495 | write32(p, c->atomic); | |
1496 | if (c->change_supported) { | |
1497 | write64(p, c->before_change); | |
1498 | write64(p, c->after_change); | |
1499 | } else { | |
1500 | write32(p, c->before_ctime_sec); | |
1501 | write32(p, c->before_ctime_nsec); | |
1502 | write32(p, c->after_ctime_sec); | |
1503 | write32(p, c->after_ctime_nsec); | |
1504 | } | |
1505 | } | |
1da177e4 LT |
1506 | |
1507 | #define RESERVE_SPACE(nbytes) do { \ | |
1508 | p = resp->p; \ | |
1509 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ | |
1510 | } while (0) | |
1511 | #define ADJUST_ARGS() resp->p = p | |
1512 | ||
1513 | /* | |
1514 | * Header routine to setup seqid operation replay cache | |
1515 | */ | |
1516 | #define ENCODE_SEQID_OP_HEAD \ | |
2ebbc012 | 1517 | __be32 *save; \ |
1da177e4 LT |
1518 | \ |
1519 | save = resp->p; | |
1520 | ||
1521 | /* | |
7fb64cee N |
1522 | * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This |
1523 | * is where sequence id's are incremented, and the replay cache is filled. | |
1524 | * Note that we increment sequence id's here, at the last moment, so we're sure | |
1525 | * we know whether the error to be returned is a sequence id mutating error. | |
1da177e4 LT |
1526 | */ |
1527 | ||
1528 | #define ENCODE_SEQID_OP_TAIL(stateowner) do { \ | |
1529 | if (seqid_mutating_err(nfserr) && stateowner) { \ | |
bd9aac52 | 1530 | stateowner->so_seqid++; \ |
1da177e4 LT |
1531 | stateowner->so_replay.rp_status = nfserr; \ |
1532 | stateowner->so_replay.rp_buflen = \ | |
1533 | (((char *)(resp)->p - (char *)save)); \ | |
1534 | memcpy(stateowner->so_replay.rp_buf, save, \ | |
1535 | stateowner->so_replay.rp_buflen); \ | |
1536 | } } while (0); | |
1537 | ||
81c3f413 BF |
1538 | /* Encode as an array of strings the string given with components |
1539 | * seperated @sep. | |
1540 | */ | |
b37ad28b | 1541 | static __be32 nfsd4_encode_components(char sep, char *components, |
2ebbc012 | 1542 | __be32 **pp, int *buflen) |
81c3f413 | 1543 | { |
2ebbc012 AV |
1544 | __be32 *p = *pp; |
1545 | __be32 *countp = p; | |
81c3f413 BF |
1546 | int strlen, count=0; |
1547 | char *str, *end; | |
1548 | ||
1549 | dprintk("nfsd4_encode_components(%s)\n", components); | |
1550 | if ((*buflen -= 4) < 0) | |
1551 | return nfserr_resource; | |
1552 | WRITE32(0); /* We will fill this in with @count later */ | |
1553 | end = str = components; | |
1554 | while (*end) { | |
1555 | for (; *end && (*end != sep); end++) | |
1556 | ; /* Point to end of component */ | |
1557 | strlen = end - str; | |
1558 | if (strlen) { | |
1559 | if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0) | |
1560 | return nfserr_resource; | |
1561 | WRITE32(strlen); | |
1562 | WRITEMEM(str, strlen); | |
1563 | count++; | |
1564 | } | |
1565 | else | |
1566 | end++; | |
1567 | str = end; | |
1568 | } | |
1569 | *pp = p; | |
1570 | p = countp; | |
1571 | WRITE32(count); | |
1572 | return 0; | |
1573 | } | |
1574 | ||
1575 | /* | |
1576 | * encode a location element of a fs_locations structure | |
1577 | */ | |
b37ad28b | 1578 | static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location, |
2ebbc012 | 1579 | __be32 **pp, int *buflen) |
81c3f413 | 1580 | { |
b37ad28b | 1581 | __be32 status; |
2ebbc012 | 1582 | __be32 *p = *pp; |
81c3f413 BF |
1583 | |
1584 | status = nfsd4_encode_components(':', location->hosts, &p, buflen); | |
1585 | if (status) | |
1586 | return status; | |
1587 | status = nfsd4_encode_components('/', location->path, &p, buflen); | |
1588 | if (status) | |
1589 | return status; | |
1590 | *pp = p; | |
1591 | return 0; | |
1592 | } | |
1593 | ||
1594 | /* | |
1595 | * Return the path to an export point in the pseudo filesystem namespace | |
1596 | * Returned string is safe to use as long as the caller holds a reference | |
1597 | * to @exp. | |
1598 | */ | |
b37ad28b | 1599 | static char *nfsd4_path(struct svc_rqst *rqstp, struct svc_export *exp, __be32 *stat) |
81c3f413 BF |
1600 | { |
1601 | struct svc_fh tmp_fh; | |
1602 | char *path, *rootpath; | |
81c3f413 BF |
1603 | |
1604 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
df547efb | 1605 | *stat = exp_pseudoroot(rqstp, &tmp_fh); |
cc45f017 AV |
1606 | if (*stat) |
1607 | return NULL; | |
54775491 | 1608 | rootpath = tmp_fh.fh_export->ex_pathname; |
81c3f413 | 1609 | |
54775491 | 1610 | path = exp->ex_pathname; |
81c3f413 BF |
1611 | |
1612 | if (strncmp(path, rootpath, strlen(rootpath))) { | |
817cb9d4 | 1613 | dprintk("nfsd: fs_locations failed;" |
81c3f413 | 1614 | "%s is not contained in %s\n", path, rootpath); |
cc45f017 AV |
1615 | *stat = nfserr_notsupp; |
1616 | return NULL; | |
81c3f413 BF |
1617 | } |
1618 | ||
1619 | return path + strlen(rootpath); | |
1620 | } | |
1621 | ||
1622 | /* | |
1623 | * encode a fs_locations structure | |
1624 | */ | |
b37ad28b | 1625 | static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp, |
81c3f413 | 1626 | struct svc_export *exp, |
2ebbc012 | 1627 | __be32 **pp, int *buflen) |
81c3f413 | 1628 | { |
b37ad28b | 1629 | __be32 status; |
cc45f017 | 1630 | int i; |
2ebbc012 | 1631 | __be32 *p = *pp; |
81c3f413 | 1632 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
cc45f017 | 1633 | char *root = nfsd4_path(rqstp, exp, &status); |
81c3f413 | 1634 | |
cc45f017 AV |
1635 | if (status) |
1636 | return status; | |
81c3f413 BF |
1637 | status = nfsd4_encode_components('/', root, &p, buflen); |
1638 | if (status) | |
1639 | return status; | |
1640 | if ((*buflen -= 4) < 0) | |
1641 | return nfserr_resource; | |
1642 | WRITE32(fslocs->locations_count); | |
1643 | for (i=0; i<fslocs->locations_count; i++) { | |
1644 | status = nfsd4_encode_fs_location4(&fslocs->locations[i], | |
1645 | &p, buflen); | |
1646 | if (status) | |
1647 | return status; | |
1648 | } | |
1649 | *pp = p; | |
1650 | return 0; | |
1651 | } | |
1da177e4 LT |
1652 | |
1653 | static u32 nfs4_ftypes[16] = { | |
1654 | NF4BAD, NF4FIFO, NF4CHR, NF4BAD, | |
1655 | NF4DIR, NF4BAD, NF4BLK, NF4BAD, | |
1656 | NF4REG, NF4BAD, NF4LNK, NF4BAD, | |
1657 | NF4SOCK, NF4BAD, NF4LNK, NF4BAD, | |
1658 | }; | |
1659 | ||
b37ad28b | 1660 | static __be32 |
1da177e4 | 1661 | nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
2ebbc012 | 1662 | __be32 **p, int *buflen) |
1da177e4 LT |
1663 | { |
1664 | int status; | |
1665 | ||
1666 | if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) | |
1667 | return nfserr_resource; | |
1668 | if (whotype != NFS4_ACL_WHO_NAMED) | |
1669 | status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); | |
1670 | else if (group) | |
1671 | status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1672 | else | |
1673 | status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1674 | if (status < 0) | |
1675 | return nfserrno(status); | |
1676 | *p = xdr_encode_opaque(*p, NULL, status); | |
1677 | *buflen -= (XDR_QUADLEN(status) << 2) + 4; | |
1678 | BUG_ON(*buflen < 0); | |
1679 | return 0; | |
1680 | } | |
1681 | ||
b37ad28b | 1682 | static inline __be32 |
2ebbc012 | 1683 | nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, __be32 **p, int *buflen) |
1da177e4 LT |
1684 | { |
1685 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen); | |
1686 | } | |
1687 | ||
b37ad28b | 1688 | static inline __be32 |
2ebbc012 | 1689 | nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, __be32 **p, int *buflen) |
1da177e4 LT |
1690 | { |
1691 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen); | |
1692 | } | |
1693 | ||
b37ad28b | 1694 | static inline __be32 |
1da177e4 | 1695 | nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
2ebbc012 | 1696 | __be32 **p, int *buflen) |
1da177e4 LT |
1697 | { |
1698 | return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen); | |
1699 | } | |
1700 | ||
42ca0993 BF |
1701 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
1702 | FATTR4_WORD0_RDATTR_ERROR) | |
1703 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
1704 | ||
b37ad28b | 1705 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
42ca0993 BF |
1706 | { |
1707 | /* As per referral draft: */ | |
1708 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
1709 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
1710 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
1711 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
1712 | *rdattr_err = NFSERR_MOVED; | |
1713 | else | |
1714 | return nfserr_moved; | |
1715 | } | |
1716 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
1717 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
1718 | return 0; | |
1719 | } | |
1da177e4 LT |
1720 | |
1721 | /* | |
1722 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
1723 | * ourselves. | |
1724 | * | |
1725 | * @countp is the buffer size in _words_; upon successful return this becomes | |
1726 | * replaced with the number of words written. | |
1727 | */ | |
b37ad28b | 1728 | __be32 |
1da177e4 | 1729 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, |
2ebbc012 | 1730 | struct dentry *dentry, __be32 *buffer, int *countp, u32 *bmval, |
406a7ea9 | 1731 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
1732 | { |
1733 | u32 bmval0 = bmval[0]; | |
1734 | u32 bmval1 = bmval[1]; | |
7e705706 | 1735 | u32 bmval2 = bmval[2]; |
1da177e4 LT |
1736 | struct kstat stat; |
1737 | struct svc_fh tempfh; | |
1738 | struct kstatfs statfs; | |
1739 | int buflen = *countp << 2; | |
2ebbc012 | 1740 | __be32 *attrlenp; |
1da177e4 LT |
1741 | u32 dummy; |
1742 | u64 dummy64; | |
42ca0993 | 1743 | u32 rdattr_err = 0; |
2ebbc012 | 1744 | __be32 *p = buffer; |
b37ad28b | 1745 | __be32 status; |
b8dd7b9a | 1746 | int err; |
1da177e4 LT |
1747 | int aclsupport = 0; |
1748 | struct nfs4_acl *acl = NULL; | |
7e705706 AA |
1749 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
1750 | u32 minorversion = resp->cstate.minorversion; | |
1da177e4 LT |
1751 | |
1752 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
7e705706 AA |
1753 | BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); |
1754 | BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); | |
1755 | BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); | |
1da177e4 | 1756 | |
42ca0993 | 1757 | if (exp->ex_fslocs.migrated) { |
7e705706 | 1758 | BUG_ON(bmval[2]); |
42ca0993 BF |
1759 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); |
1760 | if (status) | |
1761 | goto out; | |
1762 | } | |
1763 | ||
54775491 | 1764 | err = vfs_getattr(exp->ex_path.mnt, dentry, &stat); |
b8dd7b9a | 1765 | if (err) |
1da177e4 | 1766 | goto out_nfserr; |
a16e92ed BF |
1767 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | |
1768 | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
1769 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
1770 | FATTR4_WORD1_SPACE_TOTAL))) { | |
b8dd7b9a AV |
1771 | err = vfs_statfs(dentry, &statfs); |
1772 | if (err) | |
1da177e4 LT |
1773 | goto out_nfserr; |
1774 | } | |
1775 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
1776 | fh_init(&tempfh, NFS4_FHSIZE); | |
1777 | status = fh_compose(&tempfh, exp, dentry, NULL); | |
1778 | if (status) | |
1779 | goto out; | |
1780 | fhp = &tempfh; | |
1781 | } | |
1782 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
1783 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
b8dd7b9a AV |
1784 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
1785 | aclsupport = (err == 0); | |
1da177e4 | 1786 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 1787 | if (err == -EOPNOTSUPP) |
1da177e4 | 1788 | bmval0 &= ~FATTR4_WORD0_ACL; |
b8dd7b9a | 1789 | else if (err == -EINVAL) { |
1da177e4 LT |
1790 | status = nfserr_attrnotsupp; |
1791 | goto out; | |
b8dd7b9a | 1792 | } else if (err != 0) |
1da177e4 LT |
1793 | goto out_nfserr; |
1794 | } | |
1795 | } | |
81c3f413 BF |
1796 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
1797 | if (exp->ex_fslocs.locations == NULL) { | |
1798 | bmval0 &= ~FATTR4_WORD0_FS_LOCATIONS; | |
1799 | } | |
1800 | } | |
1da177e4 LT |
1801 | if ((buflen -= 16) < 0) |
1802 | goto out_resource; | |
1803 | ||
7e705706 AA |
1804 | if (unlikely(bmval2)) { |
1805 | WRITE32(3); | |
1806 | WRITE32(bmval0); | |
1807 | WRITE32(bmval1); | |
1808 | WRITE32(bmval2); | |
1809 | } else if (likely(bmval1)) { | |
1810 | WRITE32(2); | |
1811 | WRITE32(bmval0); | |
1812 | WRITE32(bmval1); | |
1813 | } else { | |
1814 | WRITE32(1); | |
1815 | WRITE32(bmval0); | |
1816 | } | |
1da177e4 LT |
1817 | attrlenp = p++; /* to be backfilled later */ |
1818 | ||
1819 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
7e705706 AA |
1820 | u32 word0 = nfsd_suppattrs0(minorversion); |
1821 | u32 word1 = nfsd_suppattrs1(minorversion); | |
1822 | u32 word2 = nfsd_suppattrs2(minorversion); | |
1823 | ||
1da177e4 LT |
1824 | if ((buflen -= 12) < 0) |
1825 | goto out_resource; | |
42ca0993 BF |
1826 | if (!aclsupport) |
1827 | word0 &= ~FATTR4_WORD0_ACL; | |
1828 | if (!exp->ex_fslocs.locations) | |
1829 | word0 &= ~FATTR4_WORD0_FS_LOCATIONS; | |
7e705706 AA |
1830 | if (!word2) { |
1831 | WRITE32(2); | |
1832 | WRITE32(word0); | |
1833 | WRITE32(word1); | |
1834 | } else { | |
1835 | WRITE32(3); | |
1836 | WRITE32(word0); | |
1837 | WRITE32(word1); | |
1838 | WRITE32(word2); | |
1839 | } | |
1da177e4 LT |
1840 | } |
1841 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
1842 | if ((buflen -= 4) < 0) | |
1843 | goto out_resource; | |
1844 | dummy = nfs4_ftypes[(stat.mode & S_IFMT) >> 12]; | |
1845 | if (dummy == NF4BAD) | |
1846 | goto out_serverfault; | |
1847 | WRITE32(dummy); | |
1848 | } | |
1849 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
1850 | if ((buflen -= 4) < 0) | |
1851 | goto out_resource; | |
49640001 | 1852 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
e34ac862 | 1853 | WRITE32(NFS4_FH_PERSISTENT); |
49640001 | 1854 | else |
e34ac862 | 1855 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
1da177e4 LT |
1856 | } |
1857 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
1da177e4 LT |
1858 | if ((buflen -= 8) < 0) |
1859 | goto out_resource; | |
c654b8a9 | 1860 | write_change(&p, &stat, dentry->d_inode); |
1da177e4 LT |
1861 | } |
1862 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
1863 | if ((buflen -= 8) < 0) | |
1864 | goto out_resource; | |
1865 | WRITE64(stat.size); | |
1866 | } | |
1867 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
1868 | if ((buflen -= 4) < 0) | |
1869 | goto out_resource; | |
1870 | WRITE32(1); | |
1871 | } | |
1872 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
1873 | if ((buflen -= 4) < 0) | |
1874 | goto out_resource; | |
1875 | WRITE32(1); | |
1876 | } | |
1877 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
1878 | if ((buflen -= 4) < 0) | |
1879 | goto out_resource; | |
1880 | WRITE32(0); | |
1881 | } | |
1882 | if (bmval0 & FATTR4_WORD0_FSID) { | |
1883 | if ((buflen -= 16) < 0) | |
1884 | goto out_resource; | |
42ca0993 BF |
1885 | if (exp->ex_fslocs.migrated) { |
1886 | WRITE64(NFS4_REFERRAL_FSID_MAJOR); | |
1887 | WRITE64(NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
1888 | } else switch(fsid_source(fhp)) { |
1889 | case FSIDSOURCE_FSID: | |
1da177e4 LT |
1890 | WRITE64((u64)exp->ex_fsid); |
1891 | WRITE64((u64)0); | |
af6a4e28 N |
1892 | break; |
1893 | case FSIDSOURCE_DEV: | |
1da177e4 LT |
1894 | WRITE32(0); |
1895 | WRITE32(MAJOR(stat.dev)); | |
1896 | WRITE32(0); | |
1897 | WRITE32(MINOR(stat.dev)); | |
af6a4e28 N |
1898 | break; |
1899 | case FSIDSOURCE_UUID: | |
1900 | WRITEMEM(exp->ex_uuid, 16); | |
1901 | break; | |
1da177e4 LT |
1902 | } |
1903 | } | |
1904 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
1905 | if ((buflen -= 4) < 0) | |
1906 | goto out_resource; | |
1907 | WRITE32(0); | |
1908 | } | |
1909 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
1910 | if ((buflen -= 4) < 0) | |
1911 | goto out_resource; | |
1912 | WRITE32(NFSD_LEASE_TIME); | |
1913 | } | |
1914 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
1915 | if ((buflen -= 4) < 0) | |
1916 | goto out_resource; | |
42ca0993 | 1917 | WRITE32(rdattr_err); |
1da177e4 LT |
1918 | } |
1919 | if (bmval0 & FATTR4_WORD0_ACL) { | |
1920 | struct nfs4_ace *ace; | |
1da177e4 LT |
1921 | |
1922 | if (acl == NULL) { | |
1923 | if ((buflen -= 4) < 0) | |
1924 | goto out_resource; | |
1925 | ||
1926 | WRITE32(0); | |
1927 | goto out_acl; | |
1928 | } | |
1929 | if ((buflen -= 4) < 0) | |
1930 | goto out_resource; | |
1931 | WRITE32(acl->naces); | |
1932 | ||
28e05dd8 | 1933 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
1da177e4 LT |
1934 | if ((buflen -= 4*3) < 0) |
1935 | goto out_resource; | |
1936 | WRITE32(ace->type); | |
1937 | WRITE32(ace->flag); | |
1938 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); | |
1939 | status = nfsd4_encode_aclname(rqstp, ace->whotype, | |
1940 | ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP, | |
1941 | &p, &buflen); | |
1942 | if (status == nfserr_resource) | |
1943 | goto out_resource; | |
1944 | if (status) | |
1945 | goto out; | |
1946 | } | |
1947 | } | |
1948 | out_acl: | |
1949 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
1950 | if ((buflen -= 4) < 0) | |
1951 | goto out_resource; | |
1952 | WRITE32(aclsupport ? | |
1953 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); | |
1954 | } | |
1955 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
1956 | if ((buflen -= 4) < 0) | |
1957 | goto out_resource; | |
1958 | WRITE32(1); | |
1959 | } | |
1960 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
1961 | if ((buflen -= 4) < 0) | |
1962 | goto out_resource; | |
1963 | WRITE32(1); | |
1964 | } | |
1965 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
1966 | if ((buflen -= 4) < 0) | |
1967 | goto out_resource; | |
1968 | WRITE32(1); | |
1969 | } | |
1970 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
1971 | if ((buflen -= 4) < 0) | |
1972 | goto out_resource; | |
1973 | WRITE32(1); | |
1974 | } | |
1975 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
1976 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; | |
1977 | if (buflen < 0) | |
1978 | goto out_resource; | |
1979 | WRITE32(fhp->fh_handle.fh_size); | |
1980 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); | |
1981 | } | |
1982 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
1983 | if ((buflen -= 8) < 0) | |
1984 | goto out_resource; | |
40ee5dc6 | 1985 | WRITE64(stat.ino); |
1da177e4 LT |
1986 | } |
1987 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
1988 | if ((buflen -= 8) < 0) | |
1989 | goto out_resource; | |
1990 | WRITE64((u64) statfs.f_ffree); | |
1991 | } | |
1992 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
1993 | if ((buflen -= 8) < 0) | |
1994 | goto out_resource; | |
1995 | WRITE64((u64) statfs.f_ffree); | |
1996 | } | |
1997 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
1998 | if ((buflen -= 8) < 0) | |
1999 | goto out_resource; | |
2000 | WRITE64((u64) statfs.f_files); | |
2001 | } | |
81c3f413 BF |
2002 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
2003 | status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); | |
2004 | if (status == nfserr_resource) | |
2005 | goto out_resource; | |
2006 | if (status) | |
2007 | goto out; | |
2008 | } | |
1da177e4 LT |
2009 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
2010 | if ((buflen -= 4) < 0) | |
2011 | goto out_resource; | |
2012 | WRITE32(1); | |
2013 | } | |
2014 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
2015 | if ((buflen -= 8) < 0) | |
2016 | goto out_resource; | |
2017 | WRITE64(~(u64)0); | |
2018 | } | |
2019 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
2020 | if ((buflen -= 4) < 0) | |
2021 | goto out_resource; | |
2022 | WRITE32(255); | |
2023 | } | |
2024 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
2025 | if ((buflen -= 4) < 0) | |
2026 | goto out_resource; | |
a16e92ed | 2027 | WRITE32(statfs.f_namelen); |
1da177e4 LT |
2028 | } |
2029 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
2030 | if ((buflen -= 8) < 0) | |
2031 | goto out_resource; | |
7adae489 | 2032 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2033 | } |
2034 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
2035 | if ((buflen -= 8) < 0) | |
2036 | goto out_resource; | |
7adae489 | 2037 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2038 | } |
2039 | if (bmval1 & FATTR4_WORD1_MODE) { | |
2040 | if ((buflen -= 4) < 0) | |
2041 | goto out_resource; | |
2042 | WRITE32(stat.mode & S_IALLUGO); | |
2043 | } | |
2044 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
2045 | if ((buflen -= 4) < 0) | |
2046 | goto out_resource; | |
2047 | WRITE32(1); | |
2048 | } | |
2049 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
2050 | if ((buflen -= 4) < 0) | |
2051 | goto out_resource; | |
2052 | WRITE32(stat.nlink); | |
2053 | } | |
2054 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
2055 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); | |
2056 | if (status == nfserr_resource) | |
2057 | goto out_resource; | |
2058 | if (status) | |
2059 | goto out; | |
2060 | } | |
2061 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
2062 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); | |
2063 | if (status == nfserr_resource) | |
2064 | goto out_resource; | |
2065 | if (status) | |
2066 | goto out; | |
2067 | } | |
2068 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
2069 | if ((buflen -= 8) < 0) | |
2070 | goto out_resource; | |
2071 | WRITE32((u32) MAJOR(stat.rdev)); | |
2072 | WRITE32((u32) MINOR(stat.rdev)); | |
2073 | } | |
2074 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
2075 | if ((buflen -= 8) < 0) | |
2076 | goto out_resource; | |
2077 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
2078 | WRITE64(dummy64); | |
2079 | } | |
2080 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
2081 | if ((buflen -= 8) < 0) | |
2082 | goto out_resource; | |
2083 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
2084 | WRITE64(dummy64); | |
2085 | } | |
2086 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
2087 | if ((buflen -= 8) < 0) | |
2088 | goto out_resource; | |
2089 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
2090 | WRITE64(dummy64); | |
2091 | } | |
2092 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
2093 | if ((buflen -= 8) < 0) | |
2094 | goto out_resource; | |
2095 | dummy64 = (u64)stat.blocks << 9; | |
2096 | WRITE64(dummy64); | |
2097 | } | |
2098 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
2099 | if ((buflen -= 12) < 0) | |
2100 | goto out_resource; | |
2101 | WRITE32(0); | |
2102 | WRITE32(stat.atime.tv_sec); | |
2103 | WRITE32(stat.atime.tv_nsec); | |
2104 | } | |
2105 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
2106 | if ((buflen -= 12) < 0) | |
2107 | goto out_resource; | |
2108 | WRITE32(0); | |
2109 | WRITE32(1); | |
2110 | WRITE32(0); | |
2111 | } | |
2112 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
2113 | if ((buflen -= 12) < 0) | |
2114 | goto out_resource; | |
2115 | WRITE32(0); | |
2116 | WRITE32(stat.ctime.tv_sec); | |
2117 | WRITE32(stat.ctime.tv_nsec); | |
2118 | } | |
2119 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
2120 | if ((buflen -= 12) < 0) | |
2121 | goto out_resource; | |
2122 | WRITE32(0); | |
2123 | WRITE32(stat.mtime.tv_sec); | |
2124 | WRITE32(stat.mtime.tv_nsec); | |
2125 | } | |
2126 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
1da177e4 LT |
2127 | if ((buflen -= 8) < 0) |
2128 | goto out_resource; | |
406a7ea9 FF |
2129 | /* |
2130 | * Get parent's attributes if not ignoring crossmount | |
2131 | * and this is the root of a cross-mounted filesystem. | |
2132 | */ | |
2133 | if (ignore_crossmnt == 0 && | |
54775491 JB |
2134 | exp->ex_path.mnt->mnt_root->d_inode == dentry->d_inode) { |
2135 | err = vfs_getattr(exp->ex_path.mnt->mnt_parent, | |
2136 | exp->ex_path.mnt->mnt_mountpoint, &stat); | |
40ee5dc6 PS |
2137 | if (err) |
2138 | goto out_nfserr; | |
2139 | } | |
2140 | WRITE64(stat.ino); | |
1da177e4 | 2141 | } |
8c18f205 BH |
2142 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
2143 | WRITE32(3); | |
2144 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0); | |
2145 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1); | |
2146 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2); | |
2147 | } | |
7e705706 | 2148 | |
1da177e4 LT |
2149 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); |
2150 | *countp = p - buffer; | |
2151 | status = nfs_ok; | |
2152 | ||
2153 | out: | |
28e05dd8 | 2154 | kfree(acl); |
1da177e4 LT |
2155 | if (fhp == &tempfh) |
2156 | fh_put(&tempfh); | |
2157 | return status; | |
2158 | out_nfserr: | |
b8dd7b9a | 2159 | status = nfserrno(err); |
1da177e4 LT |
2160 | goto out; |
2161 | out_resource: | |
2162 | *countp = 0; | |
2163 | status = nfserr_resource; | |
2164 | goto out; | |
2165 | out_serverfault: | |
2166 | status = nfserr_serverfault; | |
2167 | goto out; | |
2168 | } | |
2169 | ||
c0ce6ec8 BF |
2170 | static inline int attributes_need_mount(u32 *bmval) |
2171 | { | |
2172 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2173 | return 1; | |
2174 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2175 | return 1; | |
2176 | return 0; | |
2177 | } | |
2178 | ||
b37ad28b | 2179 | static __be32 |
1da177e4 | 2180 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, |
2ebbc012 | 2181 | const char *name, int namlen, __be32 *p, int *buflen) |
1da177e4 LT |
2182 | { |
2183 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2184 | struct dentry *dentry; | |
b37ad28b | 2185 | __be32 nfserr; |
406a7ea9 | 2186 | int ignore_crossmnt = 0; |
1da177e4 LT |
2187 | |
2188 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
2189 | if (IS_ERR(dentry)) | |
2190 | return nfserrno(PTR_ERR(dentry)); | |
b2c0cea6 BF |
2191 | if (!dentry->d_inode) { |
2192 | /* | |
2193 | * nfsd_buffered_readdir drops the i_mutex between | |
2194 | * readdir and calling this callback, leaving a window | |
2195 | * where this directory entry could have gone away. | |
2196 | */ | |
2197 | dput(dentry); | |
2198 | return nfserr_noent; | |
2199 | } | |
1da177e4 LT |
2200 | |
2201 | exp_get(exp); | |
406a7ea9 FF |
2202 | /* |
2203 | * In the case of a mountpoint, the client may be asking for | |
2204 | * attributes that are only properties of the underlying filesystem | |
2205 | * as opposed to the cross-mounted file system. In such a case, | |
2206 | * we will not follow the cross mount and will fill the attribtutes | |
2207 | * directly from the mountpoint dentry. | |
2208 | */ | |
c0ce6ec8 | 2209 | if (d_mountpoint(dentry) && !attributes_need_mount(cd->rd_bmval)) |
406a7ea9 FF |
2210 | ignore_crossmnt = 1; |
2211 | else if (d_mountpoint(dentry)) { | |
021d3a72 BF |
2212 | int err; |
2213 | ||
dcb488a3 AA |
2214 | /* |
2215 | * Why the heck aren't we just using nfsd_lookup?? | |
2216 | * Different "."/".." handling? Something else? | |
2217 | * At least, add a comment here to explain.... | |
2218 | */ | |
021d3a72 BF |
2219 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
2220 | if (err) { | |
2221 | nfserr = nfserrno(err); | |
1da177e4 LT |
2222 | goto out_put; |
2223 | } | |
dcb488a3 AA |
2224 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
2225 | if (nfserr) | |
2226 | goto out_put; | |
1da177e4 LT |
2227 | |
2228 | } | |
2229 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, | |
406a7ea9 | 2230 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
2231 | out_put: |
2232 | dput(dentry); | |
2233 | exp_put(exp); | |
2234 | return nfserr; | |
2235 | } | |
2236 | ||
2ebbc012 | 2237 | static __be32 * |
b37ad28b | 2238 | nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr) |
1da177e4 | 2239 | { |
2ebbc012 | 2240 | __be32 *attrlenp; |
1da177e4 LT |
2241 | |
2242 | if (buflen < 6) | |
2243 | return NULL; | |
2244 | *p++ = htonl(2); | |
2245 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
2246 | *p++ = htonl(0); /* bmval1 */ | |
2247 | ||
2248 | attrlenp = p++; | |
2249 | *p++ = nfserr; /* no htonl */ | |
2250 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
2251 | return p; | |
2252 | } | |
2253 | ||
2254 | static int | |
a0ad13ef N |
2255 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
2256 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 2257 | { |
a0ad13ef | 2258 | struct readdir_cd *ccd = ccdv; |
1da177e4 LT |
2259 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
2260 | int buflen; | |
2ebbc012 | 2261 | __be32 *p = cd->buffer; |
b2c0cea6 | 2262 | __be32 *cookiep; |
b37ad28b | 2263 | __be32 nfserr = nfserr_toosmall; |
1da177e4 LT |
2264 | |
2265 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
2266 | if (name && isdotent(name, namlen)) { | |
2267 | cd->common.err = nfs_ok; | |
2268 | return 0; | |
2269 | } | |
2270 | ||
2271 | if (cd->offset) | |
2272 | xdr_encode_hyper(cd->offset, (u64) offset); | |
2273 | ||
2274 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); | |
2275 | if (buflen < 0) | |
2276 | goto fail; | |
2277 | ||
2278 | *p++ = xdr_one; /* mark entry present */ | |
b2c0cea6 | 2279 | cookiep = p; |
1da177e4 LT |
2280 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
2281 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
2282 | ||
2283 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen); | |
2284 | switch (nfserr) { | |
2285 | case nfs_ok: | |
2286 | p += buflen; | |
2287 | break; | |
2288 | case nfserr_resource: | |
2289 | nfserr = nfserr_toosmall; | |
2290 | goto fail; | |
2291 | case nfserr_dropit: | |
2292 | goto fail; | |
b2c0cea6 BF |
2293 | case nfserr_noent: |
2294 | goto skip_entry; | |
1da177e4 LT |
2295 | default: |
2296 | /* | |
2297 | * If the client requested the RDATTR_ERROR attribute, | |
2298 | * we stuff the error code into this attribute | |
2299 | * and continue. If this attribute was not requested, | |
2300 | * then in accordance with the spec, we fail the | |
2301 | * entire READDIR operation(!) | |
2302 | */ | |
2303 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
2304 | goto fail; | |
1da177e4 | 2305 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
34081efc FI |
2306 | if (p == NULL) { |
2307 | nfserr = nfserr_toosmall; | |
1da177e4 | 2308 | goto fail; |
34081efc | 2309 | } |
1da177e4 LT |
2310 | } |
2311 | cd->buflen -= (p - cd->buffer); | |
2312 | cd->buffer = p; | |
b2c0cea6 BF |
2313 | cd->offset = cookiep; |
2314 | skip_entry: | |
1da177e4 LT |
2315 | cd->common.err = nfs_ok; |
2316 | return 0; | |
2317 | fail: | |
2318 | cd->common.err = nfserr; | |
2319 | return -EINVAL; | |
2320 | } | |
2321 | ||
e2f282b9 BH |
2322 | static void |
2323 | nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid) | |
2324 | { | |
bc749ca4 | 2325 | __be32 *p; |
e2f282b9 BH |
2326 | |
2327 | RESERVE_SPACE(sizeof(stateid_t)); | |
2328 | WRITE32(sid->si_generation); | |
2329 | WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
2330 | ADJUST_ARGS(); | |
2331 | } | |
2332 | ||
695e12f8 | 2333 | static __be32 |
b37ad28b | 2334 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 2335 | { |
bc749ca4 | 2336 | __be32 *p; |
1da177e4 LT |
2337 | |
2338 | if (!nfserr) { | |
2339 | RESERVE_SPACE(8); | |
2340 | WRITE32(access->ac_supported); | |
2341 | WRITE32(access->ac_resp_access); | |
2342 | ADJUST_ARGS(); | |
2343 | } | |
695e12f8 | 2344 | return nfserr; |
1da177e4 LT |
2345 | } |
2346 | ||
695e12f8 | 2347 | static __be32 |
b37ad28b | 2348 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 LT |
2349 | { |
2350 | ENCODE_SEQID_OP_HEAD; | |
2351 | ||
e2f282b9 BH |
2352 | if (!nfserr) |
2353 | nfsd4_encode_stateid(resp, &close->cl_stateid); | |
2354 | ||
1da177e4 | 2355 | ENCODE_SEQID_OP_TAIL(close->cl_stateowner); |
695e12f8 | 2356 | return nfserr; |
1da177e4 LT |
2357 | } |
2358 | ||
2359 | ||
695e12f8 | 2360 | static __be32 |
b37ad28b | 2361 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 2362 | { |
bc749ca4 | 2363 | __be32 *p; |
1da177e4 LT |
2364 | |
2365 | if (!nfserr) { | |
2366 | RESERVE_SPACE(8); | |
2367 | WRITEMEM(commit->co_verf.data, 8); | |
2368 | ADJUST_ARGS(); | |
2369 | } | |
695e12f8 | 2370 | return nfserr; |
1da177e4 LT |
2371 | } |
2372 | ||
695e12f8 | 2373 | static __be32 |
b37ad28b | 2374 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 2375 | { |
bc749ca4 | 2376 | __be32 *p; |
1da177e4 LT |
2377 | |
2378 | if (!nfserr) { | |
2379 | RESERVE_SPACE(32); | |
c654b8a9 | 2380 | write_cinfo(&p, &create->cr_cinfo); |
1da177e4 LT |
2381 | WRITE32(2); |
2382 | WRITE32(create->cr_bmval[0]); | |
2383 | WRITE32(create->cr_bmval[1]); | |
2384 | ADJUST_ARGS(); | |
2385 | } | |
695e12f8 | 2386 | return nfserr; |
1da177e4 LT |
2387 | } |
2388 | ||
b37ad28b AV |
2389 | static __be32 |
2390 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
2391 | { |
2392 | struct svc_fh *fhp = getattr->ga_fhp; | |
2393 | int buflen; | |
2394 | ||
2395 | if (nfserr) | |
2396 | return nfserr; | |
2397 | ||
2398 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); | |
2399 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, | |
2400 | resp->p, &buflen, getattr->ga_bmval, | |
406a7ea9 | 2401 | resp->rqstp, 0); |
1da177e4 LT |
2402 | if (!nfserr) |
2403 | resp->p += buflen; | |
2404 | return nfserr; | |
2405 | } | |
2406 | ||
695e12f8 BH |
2407 | static __be32 |
2408 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 2409 | { |
695e12f8 | 2410 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 2411 | unsigned int len; |
bc749ca4 | 2412 | __be32 *p; |
1da177e4 LT |
2413 | |
2414 | if (!nfserr) { | |
2415 | len = fhp->fh_handle.fh_size; | |
2416 | RESERVE_SPACE(len + 4); | |
2417 | WRITE32(len); | |
2418 | WRITEMEM(&fhp->fh_handle.fh_base, len); | |
2419 | ADJUST_ARGS(); | |
2420 | } | |
695e12f8 | 2421 | return nfserr; |
1da177e4 LT |
2422 | } |
2423 | ||
2424 | /* | |
2425 | * Including all fields other than the name, a LOCK4denied structure requires | |
2426 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
2427 | */ | |
2428 | static void | |
2429 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) | |
2430 | { | |
bc749ca4 | 2431 | __be32 *p; |
1da177e4 LT |
2432 | |
2433 | RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0)); | |
2434 | WRITE64(ld->ld_start); | |
2435 | WRITE64(ld->ld_length); | |
2436 | WRITE32(ld->ld_type); | |
2437 | if (ld->ld_sop) { | |
2438 | WRITEMEM(&ld->ld_clientid, 8); | |
2439 | WRITE32(ld->ld_sop->so_owner.len); | |
2440 | WRITEMEM(ld->ld_sop->so_owner.data, ld->ld_sop->so_owner.len); | |
2441 | kref_put(&ld->ld_sop->so_ref, nfs4_free_stateowner); | |
2442 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ | |
2443 | WRITE64((u64)0); /* clientid */ | |
2444 | WRITE32(0); /* length of owner name */ | |
2445 | } | |
2446 | ADJUST_ARGS(); | |
2447 | } | |
2448 | ||
695e12f8 | 2449 | static __be32 |
b37ad28b | 2450 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 2451 | { |
1da177e4 LT |
2452 | ENCODE_SEQID_OP_HEAD; |
2453 | ||
e2f282b9 BH |
2454 | if (!nfserr) |
2455 | nfsd4_encode_stateid(resp, &lock->lk_resp_stateid); | |
2456 | else if (nfserr == nfserr_denied) | |
1da177e4 LT |
2457 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); |
2458 | ||
3a65588a | 2459 | ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner); |
695e12f8 | 2460 | return nfserr; |
1da177e4 LT |
2461 | } |
2462 | ||
695e12f8 | 2463 | static __be32 |
b37ad28b | 2464 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 LT |
2465 | { |
2466 | if (nfserr == nfserr_denied) | |
2467 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); | |
695e12f8 | 2468 | return nfserr; |
1da177e4 LT |
2469 | } |
2470 | ||
695e12f8 | 2471 | static __be32 |
b37ad28b | 2472 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 LT |
2473 | { |
2474 | ENCODE_SEQID_OP_HEAD; | |
2475 | ||
e2f282b9 BH |
2476 | if (!nfserr) |
2477 | nfsd4_encode_stateid(resp, &locku->lu_stateid); | |
2478 | ||
1da177e4 | 2479 | ENCODE_SEQID_OP_TAIL(locku->lu_stateowner); |
695e12f8 | 2480 | return nfserr; |
1da177e4 LT |
2481 | } |
2482 | ||
2483 | ||
695e12f8 | 2484 | static __be32 |
b37ad28b | 2485 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 2486 | { |
bc749ca4 | 2487 | __be32 *p; |
1da177e4 LT |
2488 | |
2489 | if (!nfserr) { | |
2490 | RESERVE_SPACE(20); | |
c654b8a9 | 2491 | write_cinfo(&p, &link->li_cinfo); |
1da177e4 LT |
2492 | ADJUST_ARGS(); |
2493 | } | |
695e12f8 | 2494 | return nfserr; |
1da177e4 LT |
2495 | } |
2496 | ||
2497 | ||
695e12f8 | 2498 | static __be32 |
b37ad28b | 2499 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 2500 | { |
bc749ca4 | 2501 | __be32 *p; |
1da177e4 LT |
2502 | ENCODE_SEQID_OP_HEAD; |
2503 | ||
2504 | if (nfserr) | |
2505 | goto out; | |
2506 | ||
e2f282b9 BH |
2507 | nfsd4_encode_stateid(resp, &open->op_stateid); |
2508 | RESERVE_SPACE(40); | |
c654b8a9 | 2509 | write_cinfo(&p, &open->op_cinfo); |
1da177e4 LT |
2510 | WRITE32(open->op_rflags); |
2511 | WRITE32(2); | |
2512 | WRITE32(open->op_bmval[0]); | |
2513 | WRITE32(open->op_bmval[1]); | |
2514 | WRITE32(open->op_delegate_type); | |
2515 | ADJUST_ARGS(); | |
2516 | ||
2517 | switch (open->op_delegate_type) { | |
2518 | case NFS4_OPEN_DELEGATE_NONE: | |
2519 | break; | |
2520 | case NFS4_OPEN_DELEGATE_READ: | |
e2f282b9 BH |
2521 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2522 | RESERVE_SPACE(20); | |
7b190fec | 2523 | WRITE32(open->op_recall); |
1da177e4 LT |
2524 | |
2525 | /* | |
2526 | * TODO: ACE's in delegations | |
2527 | */ | |
2528 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2529 | WRITE32(0); | |
2530 | WRITE32(0); | |
2531 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2532 | ADJUST_ARGS(); | |
2533 | break; | |
2534 | case NFS4_OPEN_DELEGATE_WRITE: | |
e2f282b9 BH |
2535 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2536 | RESERVE_SPACE(32); | |
1da177e4 LT |
2537 | WRITE32(0); |
2538 | ||
2539 | /* | |
2540 | * TODO: space_limit's in delegations | |
2541 | */ | |
2542 | WRITE32(NFS4_LIMIT_SIZE); | |
2543 | WRITE32(~(u32)0); | |
2544 | WRITE32(~(u32)0); | |
2545 | ||
2546 | /* | |
2547 | * TODO: ACE's in delegations | |
2548 | */ | |
2549 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2550 | WRITE32(0); | |
2551 | WRITE32(0); | |
2552 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2553 | ADJUST_ARGS(); | |
2554 | break; | |
2555 | default: | |
2556 | BUG(); | |
2557 | } | |
2558 | /* XXX save filehandle here */ | |
2559 | out: | |
2560 | ENCODE_SEQID_OP_TAIL(open->op_stateowner); | |
695e12f8 | 2561 | return nfserr; |
1da177e4 LT |
2562 | } |
2563 | ||
695e12f8 | 2564 | static __be32 |
b37ad28b | 2565 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 LT |
2566 | { |
2567 | ENCODE_SEQID_OP_HEAD; | |
e2f282b9 BH |
2568 | |
2569 | if (!nfserr) | |
2570 | nfsd4_encode_stateid(resp, &oc->oc_resp_stateid); | |
1da177e4 LT |
2571 | |
2572 | ENCODE_SEQID_OP_TAIL(oc->oc_stateowner); | |
695e12f8 | 2573 | return nfserr; |
1da177e4 LT |
2574 | } |
2575 | ||
695e12f8 | 2576 | static __be32 |
b37ad28b | 2577 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 LT |
2578 | { |
2579 | ENCODE_SEQID_OP_HEAD; | |
e2f282b9 BH |
2580 | |
2581 | if (!nfserr) | |
2582 | nfsd4_encode_stateid(resp, &od->od_stateid); | |
1da177e4 LT |
2583 | |
2584 | ENCODE_SEQID_OP_TAIL(od->od_stateowner); | |
695e12f8 | 2585 | return nfserr; |
1da177e4 LT |
2586 | } |
2587 | ||
b37ad28b AV |
2588 | static __be32 |
2589 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
44524359 | 2590 | struct nfsd4_read *read) |
1da177e4 LT |
2591 | { |
2592 | u32 eof; | |
2593 | int v, pn; | |
2594 | unsigned long maxcount; | |
2595 | long len; | |
bc749ca4 | 2596 | __be32 *p; |
1da177e4 LT |
2597 | |
2598 | if (nfserr) | |
2599 | return nfserr; | |
2600 | if (resp->xbuf->page_len) | |
2601 | return nfserr_resource; | |
2602 | ||
2603 | RESERVE_SPACE(8); /* eof flag and byte count */ | |
2604 | ||
7adae489 | 2605 | maxcount = svc_max_payload(resp->rqstp); |
1da177e4 LT |
2606 | if (maxcount > read->rd_length) |
2607 | maxcount = read->rd_length; | |
2608 | ||
2609 | len = maxcount; | |
2610 | v = 0; | |
2611 | while (len > 0) { | |
44524359 | 2612 | pn = resp->rqstp->rq_resused++; |
3cc03b16 | 2613 | resp->rqstp->rq_vec[v].iov_base = |
44524359 | 2614 | page_address(resp->rqstp->rq_respages[pn]); |
3cc03b16 | 2615 | resp->rqstp->rq_vec[v].iov_len = |
44524359 | 2616 | len < PAGE_SIZE ? len : PAGE_SIZE; |
1da177e4 LT |
2617 | v++; |
2618 | len -= PAGE_SIZE; | |
2619 | } | |
2620 | read->rd_vlen = v; | |
2621 | ||
2622 | nfserr = nfsd_read(read->rd_rqstp, read->rd_fhp, read->rd_filp, | |
3cc03b16 | 2623 | read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, |
1da177e4 LT |
2624 | &maxcount); |
2625 | ||
2626 | if (nfserr == nfserr_symlink) | |
2627 | nfserr = nfserr_inval; | |
2628 | if (nfserr) | |
2629 | return nfserr; | |
44524359 N |
2630 | eof = (read->rd_offset + maxcount >= |
2631 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 LT |
2632 | |
2633 | WRITE32(eof); | |
2634 | WRITE32(maxcount); | |
2635 | ADJUST_ARGS(); | |
6ed6decc N |
2636 | resp->xbuf->head[0].iov_len = (char*)p |
2637 | - (char*)resp->xbuf->head[0].iov_base; | |
1da177e4 LT |
2638 | resp->xbuf->page_len = maxcount; |
2639 | ||
6ed6decc | 2640 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2641 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2642 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2643 | if (maxcount&3) { |
6ed6decc N |
2644 | RESERVE_SPACE(4); |
2645 | WRITE32(0); | |
1da177e4 LT |
2646 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2647 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2648 | ADJUST_ARGS(); |
1da177e4 LT |
2649 | } |
2650 | return 0; | |
2651 | } | |
2652 | ||
b37ad28b AV |
2653 | static __be32 |
2654 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
2655 | { |
2656 | int maxcount; | |
2657 | char *page; | |
bc749ca4 | 2658 | __be32 *p; |
1da177e4 LT |
2659 | |
2660 | if (nfserr) | |
2661 | return nfserr; | |
2662 | if (resp->xbuf->page_len) | |
2663 | return nfserr_resource; | |
2664 | ||
44524359 | 2665 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
1da177e4 LT |
2666 | |
2667 | maxcount = PAGE_SIZE; | |
2668 | RESERVE_SPACE(4); | |
2669 | ||
2670 | /* | |
2671 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
2672 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
2673 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
2674 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
2675 | */ | |
2676 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); | |
2677 | if (nfserr == nfserr_isdir) | |
2678 | return nfserr_inval; | |
2679 | if (nfserr) | |
2680 | return nfserr; | |
2681 | ||
2682 | WRITE32(maxcount); | |
2683 | ADJUST_ARGS(); | |
6ed6decc N |
2684 | resp->xbuf->head[0].iov_len = (char*)p |
2685 | - (char*)resp->xbuf->head[0].iov_base; | |
2686 | resp->xbuf->page_len = maxcount; | |
1da177e4 | 2687 | |
6ed6decc | 2688 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2689 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2690 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2691 | if (maxcount&3) { |
6ed6decc N |
2692 | RESERVE_SPACE(4); |
2693 | WRITE32(0); | |
1da177e4 LT |
2694 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2695 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2696 | ADJUST_ARGS(); |
1da177e4 LT |
2697 | } |
2698 | return 0; | |
2699 | } | |
2700 | ||
b37ad28b AV |
2701 | static __be32 |
2702 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
2703 | { |
2704 | int maxcount; | |
2705 | loff_t offset; | |
2ebbc012 | 2706 | __be32 *page, *savep, *tailbase; |
bc749ca4 | 2707 | __be32 *p; |
1da177e4 LT |
2708 | |
2709 | if (nfserr) | |
2710 | return nfserr; | |
2711 | if (resp->xbuf->page_len) | |
2712 | return nfserr_resource; | |
2713 | ||
2714 | RESERVE_SPACE(8); /* verifier */ | |
2715 | savep = p; | |
2716 | ||
2717 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
2718 | WRITE32(0); | |
2719 | WRITE32(0); | |
2720 | ADJUST_ARGS(); | |
2721 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; | |
bb6e8a9f | 2722 | tailbase = p; |
1da177e4 LT |
2723 | |
2724 | maxcount = PAGE_SIZE; | |
2725 | if (maxcount > readdir->rd_maxcount) | |
2726 | maxcount = readdir->rd_maxcount; | |
2727 | ||
2728 | /* | |
2729 | * Convert from bytes to words, account for the two words already | |
2730 | * written, make sure to leave two words at the end for the next | |
2731 | * pointer and eof field. | |
2732 | */ | |
2733 | maxcount = (maxcount >> 2) - 4; | |
2734 | if (maxcount < 0) { | |
2735 | nfserr = nfserr_toosmall; | |
2736 | goto err_no_verf; | |
2737 | } | |
2738 | ||
44524359 | 2739 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
1da177e4 LT |
2740 | readdir->common.err = 0; |
2741 | readdir->buflen = maxcount; | |
2742 | readdir->buffer = page; | |
2743 | readdir->offset = NULL; | |
2744 | ||
2745 | offset = readdir->rd_cookie; | |
2746 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
2747 | &offset, | |
2748 | &readdir->common, nfsd4_encode_dirent); | |
2749 | if (nfserr == nfs_ok && | |
2750 | readdir->common.err == nfserr_toosmall && | |
2751 | readdir->buffer == page) | |
2752 | nfserr = nfserr_toosmall; | |
2753 | if (nfserr == nfserr_symlink) | |
2754 | nfserr = nfserr_notdir; | |
2755 | if (nfserr) | |
2756 | goto err_no_verf; | |
2757 | ||
2758 | if (readdir->offset) | |
2759 | xdr_encode_hyper(readdir->offset, offset); | |
2760 | ||
2761 | p = readdir->buffer; | |
2762 | *p++ = 0; /* no more entries */ | |
2763 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
44524359 N |
2764 | resp->xbuf->page_len = ((char*)p) - (char*)page_address( |
2765 | resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); | |
1da177e4 | 2766 | |
bb6e8a9f | 2767 | /* Use rest of head for padding and remaining ops: */ |
bb6e8a9f | 2768 | resp->xbuf->tail[0].iov_base = tailbase; |
1da177e4 LT |
2769 | resp->xbuf->tail[0].iov_len = 0; |
2770 | resp->p = resp->xbuf->tail[0].iov_base; | |
bb6e8a9f | 2771 | resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; |
1da177e4 LT |
2772 | |
2773 | return 0; | |
2774 | err_no_verf: | |
2775 | p = savep; | |
2776 | ADJUST_ARGS(); | |
2777 | return nfserr; | |
2778 | } | |
2779 | ||
695e12f8 | 2780 | static __be32 |
b37ad28b | 2781 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 2782 | { |
bc749ca4 | 2783 | __be32 *p; |
1da177e4 LT |
2784 | |
2785 | if (!nfserr) { | |
2786 | RESERVE_SPACE(20); | |
c654b8a9 | 2787 | write_cinfo(&p, &remove->rm_cinfo); |
1da177e4 LT |
2788 | ADJUST_ARGS(); |
2789 | } | |
695e12f8 | 2790 | return nfserr; |
1da177e4 LT |
2791 | } |
2792 | ||
695e12f8 | 2793 | static __be32 |
b37ad28b | 2794 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 2795 | { |
bc749ca4 | 2796 | __be32 *p; |
1da177e4 LT |
2797 | |
2798 | if (!nfserr) { | |
2799 | RESERVE_SPACE(40); | |
c654b8a9 BF |
2800 | write_cinfo(&p, &rename->rn_sinfo); |
2801 | write_cinfo(&p, &rename->rn_tinfo); | |
1da177e4 LT |
2802 | ADJUST_ARGS(); |
2803 | } | |
695e12f8 | 2804 | return nfserr; |
1da177e4 LT |
2805 | } |
2806 | ||
695e12f8 | 2807 | static __be32 |
ca5c8cde | 2808 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, |
dcb488a3 AA |
2809 | struct nfsd4_secinfo *secinfo) |
2810 | { | |
2811 | int i = 0; | |
2812 | struct svc_export *exp = secinfo->si_exp; | |
4796f457 BF |
2813 | u32 nflavs; |
2814 | struct exp_flavor_info *flavs; | |
2815 | struct exp_flavor_info def_flavs[2]; | |
bc749ca4 | 2816 | __be32 *p; |
dcb488a3 AA |
2817 | |
2818 | if (nfserr) | |
2819 | goto out; | |
4796f457 BF |
2820 | if (exp->ex_nflavors) { |
2821 | flavs = exp->ex_flavors; | |
2822 | nflavs = exp->ex_nflavors; | |
2823 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
2824 | flavs = def_flavs; | |
2825 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
2826 | nflavs = 2; | |
2827 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
2828 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
2829 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
2830 | nflavs = 1; | |
2831 | flavs[0].pseudoflavor | |
2832 | = svcauth_gss_flavor(exp->ex_client); | |
2833 | } else { | |
2834 | nflavs = 1; | |
2835 | flavs[0].pseudoflavor | |
2836 | = exp->ex_client->flavour->flavour; | |
2837 | } | |
2838 | } | |
2839 | ||
dcb488a3 | 2840 | RESERVE_SPACE(4); |
4796f457 | 2841 | WRITE32(nflavs); |
dcb488a3 | 2842 | ADJUST_ARGS(); |
4796f457 BF |
2843 | for (i = 0; i < nflavs; i++) { |
2844 | u32 flav = flavs[i].pseudoflavor; | |
dcb488a3 AA |
2845 | struct gss_api_mech *gm = gss_mech_get_by_pseudoflavor(flav); |
2846 | ||
2847 | if (gm) { | |
2848 | RESERVE_SPACE(4); | |
2849 | WRITE32(RPC_AUTH_GSS); | |
2850 | ADJUST_ARGS(); | |
2851 | RESERVE_SPACE(4 + gm->gm_oid.len); | |
2852 | WRITE32(gm->gm_oid.len); | |
2853 | WRITEMEM(gm->gm_oid.data, gm->gm_oid.len); | |
2854 | ADJUST_ARGS(); | |
2855 | RESERVE_SPACE(4); | |
2856 | WRITE32(0); /* qop */ | |
2857 | ADJUST_ARGS(); | |
2858 | RESERVE_SPACE(4); | |
2859 | WRITE32(gss_pseudoflavor_to_service(gm, flav)); | |
2860 | ADJUST_ARGS(); | |
2861 | gss_mech_put(gm); | |
2862 | } else { | |
2863 | RESERVE_SPACE(4); | |
2864 | WRITE32(flav); | |
2865 | ADJUST_ARGS(); | |
2866 | } | |
2867 | } | |
2868 | out: | |
2869 | if (exp) | |
2870 | exp_put(exp); | |
695e12f8 | 2871 | return nfserr; |
dcb488a3 AA |
2872 | } |
2873 | ||
1da177e4 LT |
2874 | /* |
2875 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
2876 | * regardless of the error status. | |
2877 | */ | |
695e12f8 | 2878 | static __be32 |
b37ad28b | 2879 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 2880 | { |
bc749ca4 | 2881 | __be32 *p; |
1da177e4 LT |
2882 | |
2883 | RESERVE_SPACE(12); | |
2884 | if (nfserr) { | |
2885 | WRITE32(2); | |
2886 | WRITE32(0); | |
2887 | WRITE32(0); | |
2888 | } | |
2889 | else { | |
2890 | WRITE32(2); | |
2891 | WRITE32(setattr->sa_bmval[0]); | |
2892 | WRITE32(setattr->sa_bmval[1]); | |
2893 | } | |
2894 | ADJUST_ARGS(); | |
695e12f8 | 2895 | return nfserr; |
1da177e4 LT |
2896 | } |
2897 | ||
695e12f8 | 2898 | static __be32 |
b37ad28b | 2899 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 2900 | { |
bc749ca4 | 2901 | __be32 *p; |
1da177e4 LT |
2902 | |
2903 | if (!nfserr) { | |
2904 | RESERVE_SPACE(8 + sizeof(nfs4_verifier)); | |
2905 | WRITEMEM(&scd->se_clientid, 8); | |
2906 | WRITEMEM(&scd->se_confirm, sizeof(nfs4_verifier)); | |
2907 | ADJUST_ARGS(); | |
2908 | } | |
2909 | else if (nfserr == nfserr_clid_inuse) { | |
2910 | RESERVE_SPACE(8); | |
2911 | WRITE32(0); | |
2912 | WRITE32(0); | |
2913 | ADJUST_ARGS(); | |
2914 | } | |
695e12f8 | 2915 | return nfserr; |
1da177e4 LT |
2916 | } |
2917 | ||
695e12f8 | 2918 | static __be32 |
b37ad28b | 2919 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 2920 | { |
bc749ca4 | 2921 | __be32 *p; |
1da177e4 LT |
2922 | |
2923 | if (!nfserr) { | |
2924 | RESERVE_SPACE(16); | |
2925 | WRITE32(write->wr_bytes_written); | |
2926 | WRITE32(write->wr_how_written); | |
2927 | WRITEMEM(write->wr_verifier.data, 8); | |
2928 | ADJUST_ARGS(); | |
2929 | } | |
695e12f8 | 2930 | return nfserr; |
1da177e4 LT |
2931 | } |
2932 | ||
2db134eb AA |
2933 | static __be32 |
2934 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, int nfserr, | |
2935 | struct nfsd4_exchange_id *exid) | |
2936 | { | |
bc749ca4 | 2937 | __be32 *p; |
0733d213 AA |
2938 | char *major_id; |
2939 | char *server_scope; | |
2940 | int major_id_sz; | |
2941 | int server_scope_sz; | |
2942 | uint64_t minor_id = 0; | |
2943 | ||
2944 | if (nfserr) | |
2945 | return nfserr; | |
2946 | ||
2947 | major_id = utsname()->nodename; | |
2948 | major_id_sz = strlen(major_id); | |
2949 | server_scope = utsname()->nodename; | |
2950 | server_scope_sz = strlen(server_scope); | |
2951 | ||
2952 | RESERVE_SPACE( | |
2953 | 8 /* eir_clientid */ + | |
2954 | 4 /* eir_sequenceid */ + | |
2955 | 4 /* eir_flags */ + | |
2956 | 4 /* spr_how (SP4_NONE) */ + | |
2957 | 8 /* so_minor_id */ + | |
2958 | 4 /* so_major_id.len */ + | |
2959 | (XDR_QUADLEN(major_id_sz) * 4) + | |
2960 | 4 /* eir_server_scope.len */ + | |
2961 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
2962 | 4 /* eir_server_impl_id.count (0) */); | |
2963 | ||
2964 | WRITEMEM(&exid->clientid, 8); | |
2965 | WRITE32(exid->seqid); | |
2966 | WRITE32(exid->flags); | |
2967 | ||
2968 | /* state_protect4_r. Currently only support SP4_NONE */ | |
2969 | BUG_ON(exid->spa_how != SP4_NONE); | |
2970 | WRITE32(exid->spa_how); | |
2971 | ||
2972 | /* The server_owner struct */ | |
2973 | WRITE64(minor_id); /* Minor id */ | |
2974 | /* major id */ | |
2975 | WRITE32(major_id_sz); | |
2976 | WRITEMEM(major_id, major_id_sz); | |
2977 | ||
2978 | /* Server scope */ | |
2979 | WRITE32(server_scope_sz); | |
2980 | WRITEMEM(server_scope, server_scope_sz); | |
2981 | ||
2982 | /* Implementation id */ | |
2983 | WRITE32(0); /* zero length nfs_impl_id4 array */ | |
2984 | ADJUST_ARGS(); | |
2985 | return 0; | |
2db134eb AA |
2986 | } |
2987 | ||
2988 | static __be32 | |
2989 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, int nfserr, | |
2990 | struct nfsd4_create_session *sess) | |
2991 | { | |
bc749ca4 | 2992 | __be32 *p; |
ec6b5d7b AA |
2993 | |
2994 | if (nfserr) | |
2995 | return nfserr; | |
2996 | ||
2997 | RESERVE_SPACE(24); | |
2998 | WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
2999 | WRITE32(sess->seqid); | |
3000 | WRITE32(sess->flags); | |
3001 | ADJUST_ARGS(); | |
3002 | ||
3003 | RESERVE_SPACE(28); | |
3004 | WRITE32(0); /* headerpadsz */ | |
3005 | WRITE32(sess->fore_channel.maxreq_sz); | |
3006 | WRITE32(sess->fore_channel.maxresp_sz); | |
3007 | WRITE32(sess->fore_channel.maxresp_cached); | |
3008 | WRITE32(sess->fore_channel.maxops); | |
3009 | WRITE32(sess->fore_channel.maxreqs); | |
3010 | WRITE32(sess->fore_channel.nr_rdma_attrs); | |
3011 | ADJUST_ARGS(); | |
3012 | ||
3013 | if (sess->fore_channel.nr_rdma_attrs) { | |
3014 | RESERVE_SPACE(4); | |
3015 | WRITE32(sess->fore_channel.rdma_attrs); | |
3016 | ADJUST_ARGS(); | |
3017 | } | |
3018 | ||
3019 | RESERVE_SPACE(28); | |
3020 | WRITE32(0); /* headerpadsz */ | |
3021 | WRITE32(sess->back_channel.maxreq_sz); | |
3022 | WRITE32(sess->back_channel.maxresp_sz); | |
3023 | WRITE32(sess->back_channel.maxresp_cached); | |
3024 | WRITE32(sess->back_channel.maxops); | |
3025 | WRITE32(sess->back_channel.maxreqs); | |
3026 | WRITE32(sess->back_channel.nr_rdma_attrs); | |
3027 | ADJUST_ARGS(); | |
3028 | ||
3029 | if (sess->back_channel.nr_rdma_attrs) { | |
3030 | RESERVE_SPACE(4); | |
3031 | WRITE32(sess->back_channel.rdma_attrs); | |
3032 | ADJUST_ARGS(); | |
3033 | } | |
3034 | return 0; | |
2db134eb AA |
3035 | } |
3036 | ||
3037 | static __be32 | |
3038 | nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, int nfserr, | |
3039 | struct nfsd4_destroy_session *destroy_session) | |
3040 | { | |
2db134eb AA |
3041 | return nfserr; |
3042 | } | |
3043 | ||
bf864a31 | 3044 | __be32 |
2db134eb AA |
3045 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr, |
3046 | struct nfsd4_sequence *seq) | |
3047 | { | |
bc749ca4 | 3048 | __be32 *p; |
b85d4c01 BH |
3049 | |
3050 | if (nfserr) | |
3051 | return nfserr; | |
3052 | ||
3053 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20); | |
3054 | WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3055 | WRITE32(seq->seqid); | |
3056 | WRITE32(seq->slotid); | |
3057 | WRITE32(seq->maxslots); | |
3058 | /* | |
3059 | * FIXME: for now: | |
3060 | * target_maxslots = maxslots | |
3061 | * status_flags = 0 | |
3062 | */ | |
3063 | WRITE32(seq->maxslots); | |
3064 | WRITE32(0); | |
3065 | ||
3066 | ADJUST_ARGS(); | |
3067 | return 0; | |
2db134eb AA |
3068 | } |
3069 | ||
695e12f8 BH |
3070 | static __be32 |
3071 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
3072 | { | |
3073 | return nfserr; | |
3074 | } | |
3075 | ||
3076 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
3077 | ||
2db134eb AA |
3078 | /* |
3079 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
3080 | * since we don't need to filter out obsolete ops as this is | |
3081 | * done in the decoding phase. | |
3082 | */ | |
695e12f8 | 3083 | static nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
3084 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
3085 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
3086 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
3087 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
3088 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
3089 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
3090 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
3091 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
3092 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
3093 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
3094 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
3095 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
3096 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
3097 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
3098 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3099 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 3100 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
3101 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
3102 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
3103 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3104 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3105 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3106 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
3107 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
3108 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
3109 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
3110 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
3111 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
3112 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3113 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3114 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
3115 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
3116 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
3117 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
3118 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3119 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
3120 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3121 | |
3122 | /* NFSv4.1 operations */ | |
3123 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
3124 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_noop, | |
3125 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, | |
3126 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
3127 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session, | |
3128 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
3129 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, | |
3130 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, | |
3131 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
3132 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
3133 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
3134 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
3135 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_noop, | |
3136 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, | |
3137 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
3138 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
3139 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, | |
3140 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
3141 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
695e12f8 BH |
3142 | }; |
3143 | ||
496c262c AA |
3144 | /* |
3145 | * Calculate the total amount of memory that the compound response has taken | |
3146 | * after encoding the current operation. | |
3147 | * | |
3148 | * pad: add on 8 bytes for the next operation's op_code and status so that | |
3149 | * there is room to cache a failure on the next operation. | |
3150 | * | |
3151 | * Compare this length to the session se_fmaxresp_cached. | |
3152 | * | |
3153 | * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so | |
3154 | * will be at least a page and will therefore hold the xdr_buf head. | |
3155 | */ | |
3156 | static int nfsd4_check_drc_limit(struct nfsd4_compoundres *resp) | |
3157 | { | |
3158 | int status = 0; | |
3159 | struct xdr_buf *xb = &resp->rqstp->rq_res; | |
3160 | struct nfsd4_compoundargs *args = resp->rqstp->rq_argp; | |
3161 | struct nfsd4_session *session = NULL; | |
3162 | struct nfsd4_slot *slot = resp->cstate.slot; | |
3163 | u32 length, tlen = 0, pad = 8; | |
3164 | ||
3165 | if (!nfsd4_has_session(&resp->cstate)) | |
3166 | return status; | |
3167 | ||
3168 | session = resp->cstate.session; | |
3169 | if (session == NULL || slot->sl_cache_entry.ce_cachethis == 0) | |
3170 | return status; | |
3171 | ||
3172 | if (resp->opcnt >= args->opcnt) | |
3173 | pad = 0; /* this is the last operation */ | |
3174 | ||
3175 | if (xb->page_len == 0) { | |
3176 | length = (char *)resp->p - (char *)xb->head[0].iov_base + pad; | |
3177 | } else { | |
3178 | if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0) | |
3179 | tlen = (char *)resp->p - (char *)xb->tail[0].iov_base; | |
3180 | ||
3181 | length = xb->head[0].iov_len + xb->page_len + tlen + pad; | |
3182 | } | |
3183 | dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__, | |
3184 | length, xb->page_len, tlen, pad); | |
3185 | ||
6c18ba9f | 3186 | if (length <= session->se_fchannel.maxresp_cached) |
496c262c AA |
3187 | return status; |
3188 | else | |
3189 | return nfserr_rep_too_big_to_cache; | |
3190 | } | |
3191 | ||
1da177e4 LT |
3192 | void |
3193 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3194 | { | |
2ebbc012 | 3195 | __be32 *statp; |
bc749ca4 | 3196 | __be32 *p; |
1da177e4 LT |
3197 | |
3198 | RESERVE_SPACE(8); | |
3199 | WRITE32(op->opnum); | |
3200 | statp = p++; /* to be backfilled at the end */ | |
3201 | ADJUST_ARGS(); | |
3202 | ||
695e12f8 BH |
3203 | if (op->opnum == OP_ILLEGAL) |
3204 | goto status; | |
3205 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || | |
3206 | !nfsd4_enc_ops[op->opnum]); | |
3207 | op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u); | |
496c262c AA |
3208 | /* nfsd4_check_drc_limit guarantees enough room for error status */ |
3209 | if (!op->status && nfsd4_check_drc_limit(resp)) | |
3210 | op->status = nfserr_rep_too_big_to_cache; | |
695e12f8 | 3211 | status: |
1da177e4 LT |
3212 | /* |
3213 | * Note: We write the status directly, instead of using WRITE32(), | |
3214 | * since it is already in network byte order. | |
3215 | */ | |
3216 | *statp = op->status; | |
3217 | } | |
3218 | ||
3219 | /* | |
3220 | * Encode the reply stored in the stateowner reply cache | |
3221 | * | |
3222 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
3223 | * previously sent already encoded operation. | |
3224 | * | |
3225 | * called with nfs4_lock_state() held | |
3226 | */ | |
3227 | void | |
3228 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3229 | { | |
bc749ca4 | 3230 | __be32 *p; |
1da177e4 LT |
3231 | struct nfs4_replay *rp = op->replay; |
3232 | ||
3233 | BUG_ON(!rp); | |
3234 | ||
3235 | RESERVE_SPACE(8); | |
3236 | WRITE32(op->opnum); | |
3237 | *p++ = rp->rp_status; /* already xdr'ed */ | |
3238 | ADJUST_ARGS(); | |
3239 | ||
3240 | RESERVE_SPACE(rp->rp_buflen); | |
3241 | WRITEMEM(rp->rp_buf, rp->rp_buflen); | |
3242 | ADJUST_ARGS(); | |
3243 | } | |
3244 | ||
1da177e4 | 3245 | int |
2ebbc012 | 3246 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
3247 | { |
3248 | return xdr_ressize_check(rqstp, p); | |
3249 | } | |
3250 | ||
3251 | void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args) | |
3252 | { | |
3253 | if (args->ops != args->iops) { | |
3254 | kfree(args->ops); | |
3255 | args->ops = args->iops; | |
3256 | } | |
f99d49ad JJ |
3257 | kfree(args->tmpp); |
3258 | args->tmpp = NULL; | |
1da177e4 LT |
3259 | while (args->to_free) { |
3260 | struct tmpbuf *tb = args->to_free; | |
3261 | args->to_free = tb->next; | |
3262 | tb->release(tb->buf); | |
3263 | kfree(tb); | |
3264 | } | |
3265 | } | |
3266 | ||
3267 | int | |
2ebbc012 | 3268 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 3269 | { |
b37ad28b | 3270 | __be32 status; |
1da177e4 LT |
3271 | |
3272 | args->p = p; | |
3273 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
3274 | args->pagelist = rqstp->rq_arg.pages; | |
3275 | args->pagelen = rqstp->rq_arg.page_len; | |
3276 | args->tmpp = NULL; | |
3277 | args->to_free = NULL; | |
3278 | args->ops = args->iops; | |
3279 | args->rqstp = rqstp; | |
3280 | ||
3281 | status = nfsd4_decode_compound(args); | |
3282 | if (status) { | |
3283 | nfsd4_release_compoundargs(args); | |
3284 | } | |
3285 | return !status; | |
3286 | } | |
3287 | ||
3288 | int | |
2ebbc012 | 3289 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
3290 | { |
3291 | /* | |
3292 | * All that remains is to write the tag and operation count... | |
3293 | */ | |
3294 | struct kvec *iov; | |
3295 | p = resp->tagp; | |
3296 | *p++ = htonl(resp->taglen); | |
3297 | memcpy(p, resp->tag, resp->taglen); | |
3298 | p += XDR_QUADLEN(resp->taglen); | |
3299 | *p++ = htonl(resp->opcnt); | |
3300 | ||
3301 | if (rqstp->rq_res.page_len) | |
3302 | iov = &rqstp->rq_res.tail[0]; | |
3303 | else | |
3304 | iov = &rqstp->rq_res.head[0]; | |
3305 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; | |
3306 | BUG_ON(iov->iov_len > PAGE_SIZE); | |
6668958f | 3307 | if (nfsd4_has_session(&resp->cstate)) { |
bf864a31 AA |
3308 | if (resp->cstate.status == nfserr_replay_cache && |
3309 | !nfsd4_not_cached(resp)) { | |
da3846a2 AA |
3310 | iov->iov_len = resp->cstate.iovlen; |
3311 | } else { | |
3312 | nfsd4_store_cache_entry(resp); | |
3313 | dprintk("%s: SET SLOT STATE TO AVAILABLE\n", __func__); | |
3314 | resp->cstate.slot->sl_inuse = 0; | |
3315 | } | |
3316 | if (resp->cstate.session) | |
3317 | nfsd4_put_session(resp->cstate.session); | |
3318 | } | |
1da177e4 LT |
3319 | return 1; |
3320 | } | |
3321 | ||
3322 | /* | |
3323 | * Local variables: | |
3324 | * c-basic-offset: 8 | |
3325 | * End: | |
3326 | */ |