Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * fs/nfs/nfs4xdr.c | |
3 | * | |
4 | * Server-side XDR for NFSv4 | |
5 | * | |
6 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
7 | * All rights reserved. | |
8 | * | |
9 | * Kendrick Smith <kmsmith@umich.edu> | |
10 | * Andy Adamson <andros@umich.edu> | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its | |
22 | * contributors may be used to endorse or promote products derived | |
23 | * from this software without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
26 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
27 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
28 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
32 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
33 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
34 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
35 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
36 | * | |
37 | * TODO: Neil Brown made the following observation: We currently | |
38 | * initially reserve NFSD_BUFSIZE space on the transmit queue and | |
39 | * never release any of that until the request is complete. | |
40 | * It would be good to calculate a new maximum response size while | |
41 | * decoding the COMPOUND, and call svc_reserve with this number | |
42 | * at the end of nfs4svc_decode_compoundargs. | |
43 | */ | |
44 | ||
45 | #include <linux/param.h> | |
46 | #include <linux/smp.h> | |
1da177e4 LT |
47 | #include <linux/fs.h> |
48 | #include <linux/namei.h> | |
49 | #include <linux/vfs.h> | |
50 | #include <linux/sunrpc/xdr.h> | |
51 | #include <linux/sunrpc/svc.h> | |
52 | #include <linux/sunrpc/clnt.h> | |
53 | #include <linux/nfsd/nfsd.h> | |
54 | #include <linux/nfsd/state.h> | |
55 | #include <linux/nfsd/xdr4.h> | |
56 | #include <linux/nfsd_idmap.h> | |
57 | #include <linux/nfs4.h> | |
58 | #include <linux/nfs4_acl.h> | |
dcb488a3 | 59 | #include <linux/sunrpc/gss_api.h> |
4796f457 | 60 | #include <linux/sunrpc/svcauth_gss.h> |
1da177e4 LT |
61 | |
62 | #define NFSDDBG_FACILITY NFSDDBG_XDR | |
63 | ||
42ca0993 BF |
64 | /* |
65 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing | |
66 | * directory in order to indicate to the client that a filesystem boundary is present | |
67 | * We use a fixed fsid for a referral | |
68 | */ | |
69 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL | |
70 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL | |
71 | ||
b37ad28b AV |
72 | static __be32 |
73 | check_filename(char *str, int len, __be32 err) | |
1da177e4 LT |
74 | { |
75 | int i; | |
76 | ||
77 | if (len == 0) | |
78 | return nfserr_inval; | |
79 | if (isdotent(str, len)) | |
80 | return err; | |
81 | for (i = 0; i < len; i++) | |
82 | if (str[i] == '/') | |
83 | return err; | |
84 | return 0; | |
85 | } | |
86 | ||
87 | /* | |
88 | * START OF "GENERIC" DECODE ROUTINES. | |
89 | * These may look a little ugly since they are imported from a "generic" | |
90 | * set of XDR encode/decode routines which are intended to be shared by | |
91 | * all of our NFSv4 implementations (OpenBSD, MacOS X...). | |
92 | * | |
93 | * If the pain of reading these is too great, it should be a straightforward | |
94 | * task to translate them into Linux-specific versions which are more | |
95 | * consistent with the style used in NFSv2/v3... | |
96 | */ | |
97 | #define DECODE_HEAD \ | |
2ebbc012 | 98 | __be32 *p; \ |
b37ad28b | 99 | __be32 status |
1da177e4 LT |
100 | #define DECODE_TAIL \ |
101 | status = 0; \ | |
102 | out: \ | |
103 | return status; \ | |
104 | xdr_error: \ | |
817cb9d4 CL |
105 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
106 | __FILE__, __LINE__); \ | |
1da177e4 LT |
107 | status = nfserr_bad_xdr; \ |
108 | goto out | |
109 | ||
110 | #define READ32(x) (x) = ntohl(*p++) | |
111 | #define READ64(x) do { \ | |
112 | (x) = (u64)ntohl(*p++) << 32; \ | |
113 | (x) |= ntohl(*p++); \ | |
114 | } while (0) | |
115 | #define READTIME(x) do { \ | |
116 | p++; \ | |
117 | (x) = ntohl(*p++); \ | |
118 | p++; \ | |
119 | } while (0) | |
120 | #define READMEM(x,nbytes) do { \ | |
121 | x = (char *)p; \ | |
122 | p += XDR_QUADLEN(nbytes); \ | |
123 | } while (0) | |
124 | #define SAVEMEM(x,nbytes) do { \ | |
125 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
126 | savemem(argp, p, nbytes) : \ | |
127 | (char *)p)) { \ | |
817cb9d4 CL |
128 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
129 | __FILE__, __LINE__); \ | |
1da177e4 LT |
130 | goto xdr_error; \ |
131 | } \ | |
132 | p += XDR_QUADLEN(nbytes); \ | |
133 | } while (0) | |
134 | #define COPYMEM(x,nbytes) do { \ | |
135 | memcpy((x), p, nbytes); \ | |
136 | p += XDR_QUADLEN(nbytes); \ | |
137 | } while (0) | |
138 | ||
139 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ | |
140 | #define READ_BUF(nbytes) do { \ | |
141 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ | |
142 | p = argp->p; \ | |
143 | argp->p += XDR_QUADLEN(nbytes); \ | |
144 | } else if (!(p = read_buf(argp, nbytes))) { \ | |
817cb9d4 CL |
145 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
146 | __FILE__, __LINE__); \ | |
1da177e4 LT |
147 | goto xdr_error; \ |
148 | } \ | |
149 | } while (0) | |
150 | ||
ca2a05aa | 151 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
1da177e4 LT |
152 | { |
153 | /* We want more bytes than seem to be available. | |
154 | * Maybe we need a new page, maybe we have just run out | |
155 | */ | |
ca2a05aa | 156 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
2ebbc012 | 157 | __be32 *p; |
1da177e4 LT |
158 | if (avail + argp->pagelen < nbytes) |
159 | return NULL; | |
160 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ | |
161 | return NULL; | |
162 | /* ok, we can do it with the current plus the next page */ | |
163 | if (nbytes <= sizeof(argp->tmp)) | |
164 | p = argp->tmp; | |
165 | else { | |
f99d49ad | 166 | kfree(argp->tmpp); |
1da177e4 LT |
167 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
168 | if (!p) | |
169 | return NULL; | |
170 | ||
171 | } | |
ca2a05aa BF |
172 | /* |
173 | * The following memcpy is safe because read_buf is always | |
174 | * called with nbytes > avail, and the two cases above both | |
175 | * guarantee p points to at least nbytes bytes. | |
176 | */ | |
1da177e4 LT |
177 | memcpy(p, argp->p, avail); |
178 | /* step to next page */ | |
179 | argp->p = page_address(argp->pagelist[0]); | |
180 | argp->pagelist++; | |
181 | if (argp->pagelen < PAGE_SIZE) { | |
182 | argp->end = p + (argp->pagelen>>2); | |
183 | argp->pagelen = 0; | |
184 | } else { | |
185 | argp->end = p + (PAGE_SIZE>>2); | |
186 | argp->pagelen -= PAGE_SIZE; | |
187 | } | |
188 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); | |
189 | argp->p += XDR_QUADLEN(nbytes - avail); | |
190 | return p; | |
191 | } | |
192 | ||
193 | static int | |
194 | defer_free(struct nfsd4_compoundargs *argp, | |
195 | void (*release)(const void *), void *p) | |
196 | { | |
197 | struct tmpbuf *tb; | |
198 | ||
199 | tb = kmalloc(sizeof(*tb), GFP_KERNEL); | |
200 | if (!tb) | |
201 | return -ENOMEM; | |
202 | tb->buf = p; | |
203 | tb->release = release; | |
204 | tb->next = argp->to_free; | |
205 | argp->to_free = tb; | |
206 | return 0; | |
207 | } | |
208 | ||
2ebbc012 | 209 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
1da177e4 | 210 | { |
1da177e4 | 211 | if (p == argp->tmp) { |
a4db5fe5 BF |
212 | p = kmalloc(nbytes, GFP_KERNEL); |
213 | if (!p) | |
214 | return NULL; | |
1da177e4 LT |
215 | memcpy(p, argp->tmp, nbytes); |
216 | } else { | |
73dff8be | 217 | BUG_ON(p != argp->tmpp); |
1da177e4 LT |
218 | argp->tmpp = NULL; |
219 | } | |
220 | if (defer_free(argp, kfree, p)) { | |
a4db5fe5 | 221 | kfree(p); |
1da177e4 LT |
222 | return NULL; |
223 | } else | |
224 | return (char *)p; | |
225 | } | |
226 | ||
b37ad28b | 227 | static __be32 |
1da177e4 LT |
228 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
229 | { | |
230 | u32 bmlen; | |
231 | DECODE_HEAD; | |
232 | ||
233 | bmval[0] = 0; | |
234 | bmval[1] = 0; | |
235 | ||
236 | READ_BUF(4); | |
237 | READ32(bmlen); | |
238 | if (bmlen > 1000) | |
239 | goto xdr_error; | |
240 | ||
241 | READ_BUF(bmlen << 2); | |
242 | if (bmlen > 0) | |
243 | READ32(bmval[0]); | |
244 | if (bmlen > 1) | |
245 | READ32(bmval[1]); | |
246 | ||
247 | DECODE_TAIL; | |
248 | } | |
249 | ||
b37ad28b | 250 | static __be32 |
1da177e4 LT |
251 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, struct iattr *iattr, |
252 | struct nfs4_acl **acl) | |
253 | { | |
254 | int expected_len, len = 0; | |
255 | u32 dummy32; | |
256 | char *buf; | |
b8dd7b9a | 257 | int host_err; |
1da177e4 LT |
258 | |
259 | DECODE_HEAD; | |
260 | iattr->ia_valid = 0; | |
261 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
262 | return status; | |
263 | ||
264 | /* | |
f34f9242 | 265 | * According to spec, unsupported attributes return ERR_ATTRNOTSUPP; |
1da177e4 LT |
266 | * read-only attributes return ERR_INVAL. |
267 | */ | |
268 | if ((bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) || (bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1)) | |
269 | return nfserr_attrnotsupp; | |
270 | if ((bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0) || (bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1)) | |
271 | return nfserr_inval; | |
272 | ||
273 | READ_BUF(4); | |
274 | READ32(expected_len); | |
275 | ||
276 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
277 | READ_BUF(8); | |
278 | len += 8; | |
279 | READ64(iattr->ia_size); | |
280 | iattr->ia_valid |= ATTR_SIZE; | |
281 | } | |
282 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
28e05dd8 BF |
283 | int nace; |
284 | struct nfs4_ace *ace; | |
1da177e4 LT |
285 | |
286 | READ_BUF(4); len += 4; | |
287 | READ32(nace); | |
288 | ||
28e05dd8 BF |
289 | if (nace > NFS4_ACL_MAX) |
290 | return nfserr_resource; | |
291 | ||
292 | *acl = nfs4_acl_new(nace); | |
1da177e4 | 293 | if (*acl == NULL) { |
b8dd7b9a | 294 | host_err = -ENOMEM; |
1da177e4 LT |
295 | goto out_nfserr; |
296 | } | |
28e05dd8 | 297 | defer_free(argp, kfree, *acl); |
1da177e4 | 298 | |
28e05dd8 BF |
299 | (*acl)->naces = nace; |
300 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { | |
1da177e4 | 301 | READ_BUF(16); len += 16; |
28e05dd8 BF |
302 | READ32(ace->type); |
303 | READ32(ace->flag); | |
304 | READ32(ace->access_mask); | |
1da177e4 LT |
305 | READ32(dummy32); |
306 | READ_BUF(dummy32); | |
307 | len += XDR_QUADLEN(dummy32) << 2; | |
308 | READMEM(buf, dummy32); | |
28e05dd8 | 309 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
b8dd7b9a | 310 | host_err = 0; |
28e05dd8 BF |
311 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
312 | ace->who = 0; | |
313 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) | |
b8dd7b9a | 314 | host_err = nfsd_map_name_to_gid(argp->rqstp, |
28e05dd8 | 315 | buf, dummy32, &ace->who); |
1da177e4 | 316 | else |
b8dd7b9a | 317 | host_err = nfsd_map_name_to_uid(argp->rqstp, |
28e05dd8 | 318 | buf, dummy32, &ace->who); |
b8dd7b9a | 319 | if (host_err) |
1da177e4 | 320 | goto out_nfserr; |
1da177e4 LT |
321 | } |
322 | } else | |
323 | *acl = NULL; | |
324 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
325 | READ_BUF(4); | |
326 | len += 4; | |
327 | READ32(iattr->ia_mode); | |
328 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); | |
329 | iattr->ia_valid |= ATTR_MODE; | |
330 | } | |
331 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
332 | READ_BUF(4); | |
333 | len += 4; | |
334 | READ32(dummy32); | |
335 | READ_BUF(dummy32); | |
336 | len += (XDR_QUADLEN(dummy32) << 2); | |
337 | READMEM(buf, dummy32); | |
b8dd7b9a | 338 | if ((host_err = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
1da177e4 LT |
339 | goto out_nfserr; |
340 | iattr->ia_valid |= ATTR_UID; | |
341 | } | |
342 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
343 | READ_BUF(4); | |
344 | len += 4; | |
345 | READ32(dummy32); | |
346 | READ_BUF(dummy32); | |
347 | len += (XDR_QUADLEN(dummy32) << 2); | |
348 | READMEM(buf, dummy32); | |
b8dd7b9a | 349 | if ((host_err = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
1da177e4 LT |
350 | goto out_nfserr; |
351 | iattr->ia_valid |= ATTR_GID; | |
352 | } | |
353 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
354 | READ_BUF(4); | |
355 | len += 4; | |
356 | READ32(dummy32); | |
357 | switch (dummy32) { | |
358 | case NFS4_SET_TO_CLIENT_TIME: | |
359 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
360 | all 32 bits of 'nseconds'. */ | |
361 | READ_BUF(12); | |
362 | len += 12; | |
363 | READ32(dummy32); | |
364 | if (dummy32) | |
365 | return nfserr_inval; | |
366 | READ32(iattr->ia_atime.tv_sec); | |
367 | READ32(iattr->ia_atime.tv_nsec); | |
368 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) | |
369 | return nfserr_inval; | |
370 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); | |
371 | break; | |
372 | case NFS4_SET_TO_SERVER_TIME: | |
373 | iattr->ia_valid |= ATTR_ATIME; | |
374 | break; | |
375 | default: | |
376 | goto xdr_error; | |
377 | } | |
378 | } | |
1da177e4 LT |
379 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
380 | READ_BUF(4); | |
381 | len += 4; | |
382 | READ32(dummy32); | |
383 | switch (dummy32) { | |
384 | case NFS4_SET_TO_CLIENT_TIME: | |
385 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
386 | all 32 bits of 'nseconds'. */ | |
387 | READ_BUF(12); | |
388 | len += 12; | |
389 | READ32(dummy32); | |
390 | if (dummy32) | |
391 | return nfserr_inval; | |
392 | READ32(iattr->ia_mtime.tv_sec); | |
393 | READ32(iattr->ia_mtime.tv_nsec); | |
394 | if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) | |
395 | return nfserr_inval; | |
396 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); | |
397 | break; | |
398 | case NFS4_SET_TO_SERVER_TIME: | |
399 | iattr->ia_valid |= ATTR_MTIME; | |
400 | break; | |
401 | default: | |
402 | goto xdr_error; | |
403 | } | |
404 | } | |
405 | if (len != expected_len) | |
406 | goto xdr_error; | |
407 | ||
408 | DECODE_TAIL; | |
409 | ||
410 | out_nfserr: | |
b8dd7b9a | 411 | status = nfserrno(host_err); |
1da177e4 LT |
412 | goto out; |
413 | } | |
414 | ||
b37ad28b | 415 | static __be32 |
1da177e4 LT |
416 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
417 | { | |
418 | DECODE_HEAD; | |
419 | ||
420 | READ_BUF(4); | |
421 | READ32(access->ac_req_access); | |
422 | ||
423 | DECODE_TAIL; | |
424 | } | |
425 | ||
b37ad28b | 426 | static __be32 |
1da177e4 LT |
427 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
428 | { | |
429 | DECODE_HEAD; | |
430 | ||
431 | close->cl_stateowner = NULL; | |
432 | READ_BUF(4 + sizeof(stateid_t)); | |
433 | READ32(close->cl_seqid); | |
434 | READ32(close->cl_stateid.si_generation); | |
435 | COPYMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
436 | ||
437 | DECODE_TAIL; | |
438 | } | |
439 | ||
440 | ||
b37ad28b | 441 | static __be32 |
1da177e4 LT |
442 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
443 | { | |
444 | DECODE_HEAD; | |
445 | ||
446 | READ_BUF(12); | |
447 | READ64(commit->co_offset); | |
448 | READ32(commit->co_count); | |
449 | ||
450 | DECODE_TAIL; | |
451 | } | |
452 | ||
b37ad28b | 453 | static __be32 |
1da177e4 LT |
454 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
455 | { | |
456 | DECODE_HEAD; | |
457 | ||
458 | READ_BUF(4); | |
459 | READ32(create->cr_type); | |
460 | switch (create->cr_type) { | |
461 | case NF4LNK: | |
462 | READ_BUF(4); | |
463 | READ32(create->cr_linklen); | |
464 | READ_BUF(create->cr_linklen); | |
465 | SAVEMEM(create->cr_linkname, create->cr_linklen); | |
466 | break; | |
467 | case NF4BLK: | |
468 | case NF4CHR: | |
469 | READ_BUF(8); | |
470 | READ32(create->cr_specdata1); | |
471 | READ32(create->cr_specdata2); | |
472 | break; | |
473 | case NF4SOCK: | |
474 | case NF4FIFO: | |
475 | case NF4DIR: | |
476 | default: | |
477 | break; | |
478 | } | |
479 | ||
480 | READ_BUF(4); | |
481 | READ32(create->cr_namelen); | |
482 | READ_BUF(create->cr_namelen); | |
483 | SAVEMEM(create->cr_name, create->cr_namelen); | |
484 | if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval))) | |
485 | return status; | |
486 | ||
487 | if ((status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, &create->cr_acl))) | |
488 | goto out; | |
489 | ||
490 | DECODE_TAIL; | |
491 | } | |
492 | ||
b37ad28b | 493 | static inline __be32 |
1da177e4 LT |
494 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
495 | { | |
496 | DECODE_HEAD; | |
497 | ||
498 | READ_BUF(sizeof(stateid_t)); | |
499 | READ32(dr->dr_stateid.si_generation); | |
500 | COPYMEM(&dr->dr_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
501 | ||
502 | DECODE_TAIL; | |
503 | } | |
504 | ||
b37ad28b | 505 | static inline __be32 |
1da177e4 LT |
506 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
507 | { | |
508 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
509 | } | |
510 | ||
b37ad28b | 511 | static __be32 |
1da177e4 LT |
512 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
513 | { | |
514 | DECODE_HEAD; | |
515 | ||
516 | READ_BUF(4); | |
517 | READ32(link->li_namelen); | |
518 | READ_BUF(link->li_namelen); | |
519 | SAVEMEM(link->li_name, link->li_namelen); | |
520 | if ((status = check_filename(link->li_name, link->li_namelen, nfserr_inval))) | |
521 | return status; | |
522 | ||
523 | DECODE_TAIL; | |
524 | } | |
525 | ||
b37ad28b | 526 | static __be32 |
1da177e4 LT |
527 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
528 | { | |
529 | DECODE_HEAD; | |
530 | ||
3a65588a | 531 | lock->lk_replay_owner = NULL; |
1da177e4 LT |
532 | /* |
533 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
534 | */ | |
535 | READ_BUF(28); | |
536 | READ32(lock->lk_type); | |
537 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) | |
538 | goto xdr_error; | |
539 | READ32(lock->lk_reclaim); | |
540 | READ64(lock->lk_offset); | |
541 | READ64(lock->lk_length); | |
542 | READ32(lock->lk_is_new); | |
543 | ||
544 | if (lock->lk_is_new) { | |
545 | READ_BUF(36); | |
546 | READ32(lock->lk_new_open_seqid); | |
547 | READ32(lock->lk_new_open_stateid.si_generation); | |
548 | ||
549 | COPYMEM(&lock->lk_new_open_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
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 { | |
556 | READ_BUF(20); | |
557 | READ32(lock->lk_old_lock_stateid.si_generation); | |
558 | COPYMEM(&lock->lk_old_lock_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
559 | READ32(lock->lk_old_lock_seqid); | |
560 | } | |
561 | ||
562 | DECODE_TAIL; | |
563 | } | |
564 | ||
b37ad28b | 565 | static __be32 |
1da177e4 LT |
566 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
567 | { | |
568 | DECODE_HEAD; | |
569 | ||
570 | READ_BUF(32); | |
571 | READ32(lockt->lt_type); | |
572 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) | |
573 | goto xdr_error; | |
574 | READ64(lockt->lt_offset); | |
575 | READ64(lockt->lt_length); | |
576 | COPYMEM(&lockt->lt_clientid, 8); | |
577 | READ32(lockt->lt_owner.len); | |
578 | READ_BUF(lockt->lt_owner.len); | |
579 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
580 | ||
581 | DECODE_TAIL; | |
582 | } | |
583 | ||
b37ad28b | 584 | static __be32 |
1da177e4 LT |
585 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
586 | { | |
587 | DECODE_HEAD; | |
588 | ||
589 | locku->lu_stateowner = NULL; | |
590 | READ_BUF(24 + sizeof(stateid_t)); | |
591 | READ32(locku->lu_type); | |
592 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) | |
593 | goto xdr_error; | |
594 | READ32(locku->lu_seqid); | |
595 | READ32(locku->lu_stateid.si_generation); | |
596 | COPYMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
597 | READ64(locku->lu_offset); | |
598 | READ64(locku->lu_length); | |
599 | ||
600 | DECODE_TAIL; | |
601 | } | |
602 | ||
b37ad28b | 603 | static __be32 |
1da177e4 LT |
604 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
605 | { | |
606 | DECODE_HEAD; | |
607 | ||
608 | READ_BUF(4); | |
609 | READ32(lookup->lo_len); | |
610 | READ_BUF(lookup->lo_len); | |
611 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
612 | if ((status = check_filename(lookup->lo_name, lookup->lo_len, nfserr_noent))) | |
613 | return status; | |
614 | ||
615 | DECODE_TAIL; | |
616 | } | |
617 | ||
b37ad28b | 618 | static __be32 |
1da177e4 LT |
619 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
620 | { | |
621 | DECODE_HEAD; | |
622 | ||
623 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
624 | open->op_iattr.ia_valid = 0; | |
625 | open->op_stateowner = NULL; | |
626 | ||
627 | /* seqid, share_access, share_deny, clientid, ownerlen */ | |
628 | READ_BUF(16 + sizeof(clientid_t)); | |
629 | READ32(open->op_seqid); | |
630 | READ32(open->op_share_access); | |
631 | READ32(open->op_share_deny); | |
632 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); | |
633 | READ32(open->op_owner.len); | |
634 | ||
635 | /* owner, open_flag */ | |
636 | READ_BUF(open->op_owner.len + 4); | |
637 | SAVEMEM(open->op_owner.data, open->op_owner.len); | |
638 | READ32(open->op_create); | |
639 | switch (open->op_create) { | |
640 | case NFS4_OPEN_NOCREATE: | |
641 | break; | |
642 | case NFS4_OPEN_CREATE: | |
643 | READ_BUF(4); | |
644 | READ32(open->op_createmode); | |
645 | switch (open->op_createmode) { | |
646 | case NFS4_CREATE_UNCHECKED: | |
647 | case NFS4_CREATE_GUARDED: | |
648 | if ((status = nfsd4_decode_fattr(argp, open->op_bmval, &open->op_iattr, &open->op_acl))) | |
649 | goto out; | |
650 | break; | |
651 | case NFS4_CREATE_EXCLUSIVE: | |
652 | READ_BUF(8); | |
653 | COPYMEM(open->op_verf.data, 8); | |
654 | break; | |
655 | default: | |
656 | goto xdr_error; | |
657 | } | |
658 | break; | |
659 | default: | |
660 | goto xdr_error; | |
661 | } | |
662 | ||
663 | /* open_claim */ | |
664 | READ_BUF(4); | |
665 | READ32(open->op_claim_type); | |
666 | switch (open->op_claim_type) { | |
667 | case NFS4_OPEN_CLAIM_NULL: | |
668 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
669 | READ_BUF(4); | |
670 | READ32(open->op_fname.len); | |
671 | READ_BUF(open->op_fname.len); | |
672 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
673 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) | |
674 | return status; | |
675 | break; | |
676 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
677 | READ_BUF(4); | |
678 | READ32(open->op_delegate_type); | |
679 | break; | |
680 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
681 | READ_BUF(sizeof(stateid_t) + 4); | |
682 | COPYMEM(&open->op_delegate_stateid, sizeof(stateid_t)); | |
683 | READ32(open->op_fname.len); | |
684 | READ_BUF(open->op_fname.len); | |
685 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
686 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) | |
687 | return status; | |
688 | break; | |
689 | default: | |
690 | goto xdr_error; | |
691 | } | |
692 | ||
693 | DECODE_TAIL; | |
694 | } | |
695 | ||
b37ad28b | 696 | static __be32 |
1da177e4 LT |
697 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
698 | { | |
699 | DECODE_HEAD; | |
700 | ||
701 | open_conf->oc_stateowner = NULL; | |
702 | READ_BUF(4 + sizeof(stateid_t)); | |
703 | READ32(open_conf->oc_req_stateid.si_generation); | |
704 | COPYMEM(&open_conf->oc_req_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
705 | READ32(open_conf->oc_seqid); | |
706 | ||
707 | DECODE_TAIL; | |
708 | } | |
709 | ||
b37ad28b | 710 | static __be32 |
1da177e4 LT |
711 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
712 | { | |
713 | DECODE_HEAD; | |
714 | ||
715 | open_down->od_stateowner = NULL; | |
716 | READ_BUF(12 + sizeof(stateid_t)); | |
717 | READ32(open_down->od_stateid.si_generation); | |
718 | COPYMEM(&open_down->od_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
719 | READ32(open_down->od_seqid); | |
720 | READ32(open_down->od_share_access); | |
721 | READ32(open_down->od_share_deny); | |
722 | ||
723 | DECODE_TAIL; | |
724 | } | |
725 | ||
b37ad28b | 726 | static __be32 |
1da177e4 LT |
727 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
728 | { | |
729 | DECODE_HEAD; | |
730 | ||
731 | READ_BUF(4); | |
732 | READ32(putfh->pf_fhlen); | |
733 | if (putfh->pf_fhlen > NFS4_FHSIZE) | |
734 | goto xdr_error; | |
735 | READ_BUF(putfh->pf_fhlen); | |
736 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
737 | ||
738 | DECODE_TAIL; | |
739 | } | |
740 | ||
b37ad28b | 741 | static __be32 |
1da177e4 LT |
742 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
743 | { | |
744 | DECODE_HEAD; | |
745 | ||
746 | READ_BUF(sizeof(stateid_t) + 12); | |
747 | READ32(read->rd_stateid.si_generation); | |
748 | COPYMEM(&read->rd_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
749 | READ64(read->rd_offset); | |
750 | READ32(read->rd_length); | |
751 | ||
752 | DECODE_TAIL; | |
753 | } | |
754 | ||
b37ad28b | 755 | static __be32 |
1da177e4 LT |
756 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
757 | { | |
758 | DECODE_HEAD; | |
759 | ||
760 | READ_BUF(24); | |
761 | READ64(readdir->rd_cookie); | |
762 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); | |
763 | READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ | |
764 | READ32(readdir->rd_maxcount); | |
765 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) | |
766 | goto out; | |
767 | ||
768 | DECODE_TAIL; | |
769 | } | |
770 | ||
b37ad28b | 771 | static __be32 |
1da177e4 LT |
772 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
773 | { | |
774 | DECODE_HEAD; | |
775 | ||
776 | READ_BUF(4); | |
777 | READ32(remove->rm_namelen); | |
778 | READ_BUF(remove->rm_namelen); | |
779 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
780 | if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent))) | |
781 | return status; | |
782 | ||
783 | DECODE_TAIL; | |
784 | } | |
785 | ||
b37ad28b | 786 | static __be32 |
1da177e4 LT |
787 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
788 | { | |
789 | DECODE_HEAD; | |
790 | ||
791 | READ_BUF(4); | |
792 | READ32(rename->rn_snamelen); | |
793 | READ_BUF(rename->rn_snamelen + 4); | |
794 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); | |
795 | READ32(rename->rn_tnamelen); | |
796 | READ_BUF(rename->rn_tnamelen); | |
797 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
798 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent))) | |
799 | return status; | |
800 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval))) | |
801 | return status; | |
802 | ||
803 | DECODE_TAIL; | |
804 | } | |
805 | ||
b37ad28b | 806 | static __be32 |
1da177e4 LT |
807 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
808 | { | |
809 | DECODE_HEAD; | |
810 | ||
811 | READ_BUF(sizeof(clientid_t)); | |
812 | COPYMEM(clientid, sizeof(clientid_t)); | |
813 | ||
814 | DECODE_TAIL; | |
815 | } | |
816 | ||
dcb488a3 AA |
817 | static __be32 |
818 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
819 | struct nfsd4_secinfo *secinfo) | |
820 | { | |
821 | DECODE_HEAD; | |
822 | ||
823 | READ_BUF(4); | |
824 | READ32(secinfo->si_namelen); | |
825 | READ_BUF(secinfo->si_namelen); | |
826 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
827 | status = check_filename(secinfo->si_name, secinfo->si_namelen, | |
828 | nfserr_noent); | |
829 | if (status) | |
830 | return status; | |
831 | DECODE_TAIL; | |
832 | } | |
833 | ||
b37ad28b | 834 | static __be32 |
1da177e4 LT |
835 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
836 | { | |
837 | DECODE_HEAD; | |
838 | ||
839 | READ_BUF(sizeof(stateid_t)); | |
840 | READ32(setattr->sa_stateid.si_generation); | |
841 | COPYMEM(&setattr->sa_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
842 | if ((status = nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, &setattr->sa_acl))) | |
843 | goto out; | |
844 | ||
845 | DECODE_TAIL; | |
846 | } | |
847 | ||
b37ad28b | 848 | static __be32 |
1da177e4 LT |
849 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
850 | { | |
851 | DECODE_HEAD; | |
852 | ||
853 | READ_BUF(12); | |
854 | COPYMEM(setclientid->se_verf.data, 8); | |
855 | READ32(setclientid->se_namelen); | |
856 | ||
857 | READ_BUF(setclientid->se_namelen + 8); | |
858 | SAVEMEM(setclientid->se_name, setclientid->se_namelen); | |
859 | READ32(setclientid->se_callback_prog); | |
860 | READ32(setclientid->se_callback_netid_len); | |
861 | ||
862 | READ_BUF(setclientid->se_callback_netid_len + 4); | |
863 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); | |
864 | READ32(setclientid->se_callback_addr_len); | |
865 | ||
866 | READ_BUF(setclientid->se_callback_addr_len + 4); | |
867 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); | |
868 | READ32(setclientid->se_callback_ident); | |
869 | ||
870 | DECODE_TAIL; | |
871 | } | |
872 | ||
b37ad28b | 873 | static __be32 |
1da177e4 LT |
874 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
875 | { | |
876 | DECODE_HEAD; | |
877 | ||
878 | READ_BUF(8 + sizeof(nfs4_verifier)); | |
879 | COPYMEM(&scd_c->sc_clientid, 8); | |
880 | COPYMEM(&scd_c->sc_confirm, sizeof(nfs4_verifier)); | |
881 | ||
882 | DECODE_TAIL; | |
883 | } | |
884 | ||
885 | /* Also used for NVERIFY */ | |
b37ad28b | 886 | static __be32 |
1da177e4 LT |
887 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
888 | { | |
889 | #if 0 | |
890 | struct nfsd4_compoundargs save = { | |
891 | .p = argp->p, | |
892 | .end = argp->end, | |
893 | .rqstp = argp->rqstp, | |
894 | }; | |
895 | u32 ve_bmval[2]; | |
896 | struct iattr ve_iattr; /* request */ | |
897 | struct nfs4_acl *ve_acl; /* request */ | |
898 | #endif | |
899 | DECODE_HEAD; | |
900 | ||
901 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
902 | goto out; | |
903 | ||
904 | /* For convenience's sake, we compare raw xdr'd attributes in | |
905 | * nfsd4_proc_verify; however we still decode here just to return | |
906 | * correct error in case of bad xdr. */ | |
907 | #if 0 | |
908 | status = nfsd4_decode_fattr(ve_bmval, &ve_iattr, &ve_acl); | |
909 | if (status == nfserr_inval) { | |
910 | status = nfserrno(status); | |
911 | goto out; | |
912 | } | |
913 | #endif | |
914 | READ_BUF(4); | |
915 | READ32(verify->ve_attrlen); | |
916 | READ_BUF(verify->ve_attrlen); | |
917 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
918 | ||
919 | DECODE_TAIL; | |
920 | } | |
921 | ||
b37ad28b | 922 | static __be32 |
1da177e4 LT |
923 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
924 | { | |
925 | int avail; | |
926 | int v; | |
927 | int len; | |
928 | DECODE_HEAD; | |
929 | ||
930 | READ_BUF(sizeof(stateid_opaque_t) + 20); | |
931 | READ32(write->wr_stateid.si_generation); | |
932 | COPYMEM(&write->wr_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
933 | READ64(write->wr_offset); | |
934 | READ32(write->wr_stable_how); | |
935 | if (write->wr_stable_how > 2) | |
936 | goto xdr_error; | |
937 | READ32(write->wr_buflen); | |
938 | ||
939 | /* Sorry .. no magic macros for this.. * | |
940 | * READ_BUF(write->wr_buflen); | |
941 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
942 | */ | |
943 | avail = (char*)argp->end - (char*)argp->p; | |
944 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
945 | dprintk("NFSD: xdr error (%s:%d)\n", |
946 | __FILE__, __LINE__); | |
1da177e4 LT |
947 | goto xdr_error; |
948 | } | |
3cc03b16 N |
949 | argp->rqstp->rq_vec[0].iov_base = p; |
950 | argp->rqstp->rq_vec[0].iov_len = avail; | |
1da177e4 LT |
951 | v = 0; |
952 | len = write->wr_buflen; | |
3cc03b16 N |
953 | while (len > argp->rqstp->rq_vec[v].iov_len) { |
954 | len -= argp->rqstp->rq_vec[v].iov_len; | |
1da177e4 | 955 | v++; |
3cc03b16 | 956 | argp->rqstp->rq_vec[v].iov_base = page_address(argp->pagelist[0]); |
1da177e4 LT |
957 | argp->pagelist++; |
958 | if (argp->pagelen >= PAGE_SIZE) { | |
3cc03b16 | 959 | argp->rqstp->rq_vec[v].iov_len = PAGE_SIZE; |
1da177e4 LT |
960 | argp->pagelen -= PAGE_SIZE; |
961 | } else { | |
3cc03b16 | 962 | argp->rqstp->rq_vec[v].iov_len = argp->pagelen; |
1da177e4 LT |
963 | argp->pagelen -= len; |
964 | } | |
965 | } | |
2ebbc012 AV |
966 | argp->end = (__be32*) (argp->rqstp->rq_vec[v].iov_base + argp->rqstp->rq_vec[v].iov_len); |
967 | argp->p = (__be32*) (argp->rqstp->rq_vec[v].iov_base + (XDR_QUADLEN(len) << 2)); | |
3cc03b16 | 968 | argp->rqstp->rq_vec[v].iov_len = len; |
1da177e4 LT |
969 | write->wr_vlen = v+1; |
970 | ||
971 | DECODE_TAIL; | |
972 | } | |
973 | ||
b37ad28b | 974 | static __be32 |
1da177e4 LT |
975 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
976 | { | |
977 | DECODE_HEAD; | |
978 | ||
979 | READ_BUF(12); | |
980 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
981 | READ32(rlockowner->rl_owner.len); | |
982 | READ_BUF(rlockowner->rl_owner.len); | |
983 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
984 | ||
985 | DECODE_TAIL; | |
986 | } | |
987 | ||
b37ad28b | 988 | static __be32 |
1da177e4 LT |
989 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
990 | { | |
991 | DECODE_HEAD; | |
992 | struct nfsd4_op *op; | |
993 | int i; | |
994 | ||
995 | /* | |
996 | * XXX: According to spec, we should check the tag | |
997 | * for UTF-8 compliance. I'm postponing this for | |
998 | * now because it seems that some clients do use | |
999 | * binary tags. | |
1000 | */ | |
1001 | READ_BUF(4); | |
1002 | READ32(argp->taglen); | |
1003 | READ_BUF(argp->taglen + 8); | |
1004 | SAVEMEM(argp->tag, argp->taglen); | |
1005 | READ32(argp->minorversion); | |
1006 | READ32(argp->opcnt); | |
1007 | ||
1008 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1009 | goto xdr_error; | |
1010 | if (argp->opcnt > 100) | |
1011 | goto xdr_error; | |
1012 | ||
e8c96f8c | 1013 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
1da177e4 LT |
1014 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1015 | if (!argp->ops) { | |
1016 | argp->ops = argp->iops; | |
817cb9d4 | 1017 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1018 | goto xdr_error; |
1019 | } | |
1020 | } | |
1021 | ||
1022 | for (i = 0; i < argp->opcnt; i++) { | |
1023 | op = &argp->ops[i]; | |
1024 | op->replay = NULL; | |
1025 | ||
1026 | /* | |
1027 | * We can't use READ_BUF() here because we need to handle | |
1028 | * a missing opcode as an OP_WRITE + 1. So we need to check | |
1029 | * to see if we're truly at the end of our buffer or if there | |
1030 | * is another page we need to flip to. | |
1031 | */ | |
1032 | ||
1033 | if (argp->p == argp->end) { | |
1034 | if (argp->pagelen < 4) { | |
1035 | /* There isn't an opcode still on the wire */ | |
1036 | op->opnum = OP_WRITE + 1; | |
1037 | op->status = nfserr_bad_xdr; | |
1038 | argp->opcnt = i+1; | |
1039 | break; | |
1040 | } | |
1041 | ||
1042 | /* | |
1043 | * False alarm. We just hit a page boundary, but there | |
1044 | * is still data available. Move pointer across page | |
1045 | * boundary. *snip from READ_BUF* | |
1046 | */ | |
1047 | argp->p = page_address(argp->pagelist[0]); | |
1048 | argp->pagelist++; | |
1049 | if (argp->pagelen < PAGE_SIZE) { | |
1050 | argp->end = p + (argp->pagelen>>2); | |
1051 | argp->pagelen = 0; | |
1052 | } else { | |
1053 | argp->end = p + (PAGE_SIZE>>2); | |
1054 | argp->pagelen -= PAGE_SIZE; | |
1055 | } | |
1056 | } | |
1057 | op->opnum = ntohl(*argp->p++); | |
1058 | ||
1059 | switch (op->opnum) { | |
1060 | case 2: /* Reserved operation */ | |
1061 | op->opnum = OP_ILLEGAL; | |
1062 | if (argp->minorversion == 0) | |
1063 | op->status = nfserr_op_illegal; | |
1064 | else | |
1065 | op->status = nfserr_minor_vers_mismatch; | |
1066 | break; | |
1067 | case OP_ACCESS: | |
1068 | op->status = nfsd4_decode_access(argp, &op->u.access); | |
1069 | break; | |
1070 | case OP_CLOSE: | |
1071 | op->status = nfsd4_decode_close(argp, &op->u.close); | |
1072 | break; | |
1073 | case OP_COMMIT: | |
1074 | op->status = nfsd4_decode_commit(argp, &op->u.commit); | |
1075 | break; | |
1076 | case OP_CREATE: | |
1077 | op->status = nfsd4_decode_create(argp, &op->u.create); | |
1078 | break; | |
1079 | case OP_DELEGRETURN: | |
1080 | op->status = nfsd4_decode_delegreturn(argp, &op->u.delegreturn); | |
1081 | break; | |
1082 | case OP_GETATTR: | |
1083 | op->status = nfsd4_decode_getattr(argp, &op->u.getattr); | |
1084 | break; | |
1085 | case OP_GETFH: | |
1086 | op->status = nfs_ok; | |
1087 | break; | |
1088 | case OP_LINK: | |
1089 | op->status = nfsd4_decode_link(argp, &op->u.link); | |
1090 | break; | |
1091 | case OP_LOCK: | |
1092 | op->status = nfsd4_decode_lock(argp, &op->u.lock); | |
1093 | break; | |
1094 | case OP_LOCKT: | |
1095 | op->status = nfsd4_decode_lockt(argp, &op->u.lockt); | |
1096 | break; | |
1097 | case OP_LOCKU: | |
1098 | op->status = nfsd4_decode_locku(argp, &op->u.locku); | |
1099 | break; | |
1100 | case OP_LOOKUP: | |
1101 | op->status = nfsd4_decode_lookup(argp, &op->u.lookup); | |
1102 | break; | |
1103 | case OP_LOOKUPP: | |
1104 | op->status = nfs_ok; | |
1105 | break; | |
1106 | case OP_NVERIFY: | |
1107 | op->status = nfsd4_decode_verify(argp, &op->u.nverify); | |
1108 | break; | |
1109 | case OP_OPEN: | |
1110 | op->status = nfsd4_decode_open(argp, &op->u.open); | |
1111 | break; | |
1112 | case OP_OPEN_CONFIRM: | |
1113 | op->status = nfsd4_decode_open_confirm(argp, &op->u.open_confirm); | |
1114 | break; | |
1115 | case OP_OPEN_DOWNGRADE: | |
1116 | op->status = nfsd4_decode_open_downgrade(argp, &op->u.open_downgrade); | |
1117 | break; | |
1118 | case OP_PUTFH: | |
1119 | op->status = nfsd4_decode_putfh(argp, &op->u.putfh); | |
1120 | break; | |
1121 | case OP_PUTROOTFH: | |
1122 | op->status = nfs_ok; | |
1123 | break; | |
1124 | case OP_READ: | |
1125 | op->status = nfsd4_decode_read(argp, &op->u.read); | |
1126 | break; | |
1127 | case OP_READDIR: | |
1128 | op->status = nfsd4_decode_readdir(argp, &op->u.readdir); | |
1129 | break; | |
1130 | case OP_READLINK: | |
1131 | op->status = nfs_ok; | |
1132 | break; | |
1133 | case OP_REMOVE: | |
1134 | op->status = nfsd4_decode_remove(argp, &op->u.remove); | |
1135 | break; | |
1136 | case OP_RENAME: | |
1137 | op->status = nfsd4_decode_rename(argp, &op->u.rename); | |
1138 | break; | |
1139 | case OP_RESTOREFH: | |
1140 | op->status = nfs_ok; | |
1141 | break; | |
1142 | case OP_RENEW: | |
1143 | op->status = nfsd4_decode_renew(argp, &op->u.renew); | |
1144 | break; | |
1145 | case OP_SAVEFH: | |
1146 | op->status = nfs_ok; | |
1147 | break; | |
dcb488a3 AA |
1148 | case OP_SECINFO: |
1149 | op->status = nfsd4_decode_secinfo(argp, &op->u.secinfo); | |
1150 | break; | |
1da177e4 LT |
1151 | case OP_SETATTR: |
1152 | op->status = nfsd4_decode_setattr(argp, &op->u.setattr); | |
1153 | break; | |
1154 | case OP_SETCLIENTID: | |
1155 | op->status = nfsd4_decode_setclientid(argp, &op->u.setclientid); | |
1156 | break; | |
1157 | case OP_SETCLIENTID_CONFIRM: | |
1158 | op->status = nfsd4_decode_setclientid_confirm(argp, &op->u.setclientid_confirm); | |
1159 | break; | |
1160 | case OP_VERIFY: | |
1161 | op->status = nfsd4_decode_verify(argp, &op->u.verify); | |
1162 | break; | |
1163 | case OP_WRITE: | |
1164 | op->status = nfsd4_decode_write(argp, &op->u.write); | |
1165 | break; | |
1166 | case OP_RELEASE_LOCKOWNER: | |
1167 | op->status = nfsd4_decode_release_lockowner(argp, &op->u.release_lockowner); | |
1168 | break; | |
1169 | default: | |
1170 | op->opnum = OP_ILLEGAL; | |
1171 | op->status = nfserr_op_illegal; | |
1172 | break; | |
1173 | } | |
1174 | ||
1175 | if (op->status) { | |
1176 | argp->opcnt = i+1; | |
1177 | break; | |
1178 | } | |
1179 | } | |
1180 | ||
1181 | DECODE_TAIL; | |
1182 | } | |
1183 | /* | |
1184 | * END OF "GENERIC" DECODE ROUTINES. | |
1185 | */ | |
1186 | ||
1187 | /* | |
1188 | * START OF "GENERIC" ENCODE ROUTINES. | |
1189 | * These may look a little ugly since they are imported from a "generic" | |
1190 | * set of XDR encode/decode routines which are intended to be shared by | |
1191 | * all of our NFSv4 implementations (OpenBSD, MacOS X...). | |
1192 | * | |
1193 | * If the pain of reading these is too great, it should be a straightforward | |
1194 | * task to translate them into Linux-specific versions which are more | |
1195 | * consistent with the style used in NFSv2/v3... | |
1196 | */ | |
2ebbc012 | 1197 | #define ENCODE_HEAD __be32 *p |
1da177e4 LT |
1198 | |
1199 | #define WRITE32(n) *p++ = htonl(n) | |
1200 | #define WRITE64(n) do { \ | |
1201 | *p++ = htonl((u32)((n) >> 32)); \ | |
1202 | *p++ = htonl((u32)(n)); \ | |
1203 | } while (0) | |
1204 | #define WRITEMEM(ptr,nbytes) do { \ | |
1205 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ | |
1206 | memcpy(p, ptr, nbytes); \ | |
1207 | p += XDR_QUADLEN(nbytes); \ | |
1208 | } while (0) | |
1209 | #define WRITECINFO(c) do { \ | |
1210 | *p++ = htonl(c.atomic); \ | |
1211 | *p++ = htonl(c.before_ctime_sec); \ | |
1212 | *p++ = htonl(c.before_ctime_nsec); \ | |
1213 | *p++ = htonl(c.after_ctime_sec); \ | |
1214 | *p++ = htonl(c.after_ctime_nsec); \ | |
1215 | } while (0) | |
1216 | ||
1217 | #define RESERVE_SPACE(nbytes) do { \ | |
1218 | p = resp->p; \ | |
1219 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ | |
1220 | } while (0) | |
1221 | #define ADJUST_ARGS() resp->p = p | |
1222 | ||
1223 | /* | |
1224 | * Header routine to setup seqid operation replay cache | |
1225 | */ | |
1226 | #define ENCODE_SEQID_OP_HEAD \ | |
2ebbc012 AV |
1227 | __be32 *p; \ |
1228 | __be32 *save; \ | |
1da177e4 LT |
1229 | \ |
1230 | save = resp->p; | |
1231 | ||
1232 | /* | |
7fb64cee N |
1233 | * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This |
1234 | * is where sequence id's are incremented, and the replay cache is filled. | |
1235 | * Note that we increment sequence id's here, at the last moment, so we're sure | |
1236 | * we know whether the error to be returned is a sequence id mutating error. | |
1da177e4 LT |
1237 | */ |
1238 | ||
1239 | #define ENCODE_SEQID_OP_TAIL(stateowner) do { \ | |
1240 | if (seqid_mutating_err(nfserr) && stateowner) { \ | |
bd9aac52 | 1241 | stateowner->so_seqid++; \ |
1da177e4 LT |
1242 | stateowner->so_replay.rp_status = nfserr; \ |
1243 | stateowner->so_replay.rp_buflen = \ | |
1244 | (((char *)(resp)->p - (char *)save)); \ | |
1245 | memcpy(stateowner->so_replay.rp_buf, save, \ | |
1246 | stateowner->so_replay.rp_buflen); \ | |
1247 | } } while (0); | |
1248 | ||
81c3f413 BF |
1249 | /* Encode as an array of strings the string given with components |
1250 | * seperated @sep. | |
1251 | */ | |
b37ad28b | 1252 | static __be32 nfsd4_encode_components(char sep, char *components, |
2ebbc012 | 1253 | __be32 **pp, int *buflen) |
81c3f413 | 1254 | { |
2ebbc012 AV |
1255 | __be32 *p = *pp; |
1256 | __be32 *countp = p; | |
81c3f413 BF |
1257 | int strlen, count=0; |
1258 | char *str, *end; | |
1259 | ||
1260 | dprintk("nfsd4_encode_components(%s)\n", components); | |
1261 | if ((*buflen -= 4) < 0) | |
1262 | return nfserr_resource; | |
1263 | WRITE32(0); /* We will fill this in with @count later */ | |
1264 | end = str = components; | |
1265 | while (*end) { | |
1266 | for (; *end && (*end != sep); end++) | |
1267 | ; /* Point to end of component */ | |
1268 | strlen = end - str; | |
1269 | if (strlen) { | |
1270 | if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0) | |
1271 | return nfserr_resource; | |
1272 | WRITE32(strlen); | |
1273 | WRITEMEM(str, strlen); | |
1274 | count++; | |
1275 | } | |
1276 | else | |
1277 | end++; | |
1278 | str = end; | |
1279 | } | |
1280 | *pp = p; | |
1281 | p = countp; | |
1282 | WRITE32(count); | |
1283 | return 0; | |
1284 | } | |
1285 | ||
1286 | /* | |
1287 | * encode a location element of a fs_locations structure | |
1288 | */ | |
b37ad28b | 1289 | static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location, |
2ebbc012 | 1290 | __be32 **pp, int *buflen) |
81c3f413 | 1291 | { |
b37ad28b | 1292 | __be32 status; |
2ebbc012 | 1293 | __be32 *p = *pp; |
81c3f413 BF |
1294 | |
1295 | status = nfsd4_encode_components(':', location->hosts, &p, buflen); | |
1296 | if (status) | |
1297 | return status; | |
1298 | status = nfsd4_encode_components('/', location->path, &p, buflen); | |
1299 | if (status) | |
1300 | return status; | |
1301 | *pp = p; | |
1302 | return 0; | |
1303 | } | |
1304 | ||
1305 | /* | |
1306 | * Return the path to an export point in the pseudo filesystem namespace | |
1307 | * Returned string is safe to use as long as the caller holds a reference | |
1308 | * to @exp. | |
1309 | */ | |
b37ad28b | 1310 | static char *nfsd4_path(struct svc_rqst *rqstp, struct svc_export *exp, __be32 *stat) |
81c3f413 BF |
1311 | { |
1312 | struct svc_fh tmp_fh; | |
1313 | char *path, *rootpath; | |
81c3f413 BF |
1314 | |
1315 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
df547efb | 1316 | *stat = exp_pseudoroot(rqstp, &tmp_fh); |
cc45f017 AV |
1317 | if (*stat) |
1318 | return NULL; | |
54775491 | 1319 | rootpath = tmp_fh.fh_export->ex_pathname; |
81c3f413 | 1320 | |
54775491 | 1321 | path = exp->ex_pathname; |
81c3f413 BF |
1322 | |
1323 | if (strncmp(path, rootpath, strlen(rootpath))) { | |
817cb9d4 | 1324 | dprintk("nfsd: fs_locations failed;" |
81c3f413 | 1325 | "%s is not contained in %s\n", path, rootpath); |
cc45f017 AV |
1326 | *stat = nfserr_notsupp; |
1327 | return NULL; | |
81c3f413 BF |
1328 | } |
1329 | ||
1330 | return path + strlen(rootpath); | |
1331 | } | |
1332 | ||
1333 | /* | |
1334 | * encode a fs_locations structure | |
1335 | */ | |
b37ad28b | 1336 | static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp, |
81c3f413 | 1337 | struct svc_export *exp, |
2ebbc012 | 1338 | __be32 **pp, int *buflen) |
81c3f413 | 1339 | { |
b37ad28b | 1340 | __be32 status; |
cc45f017 | 1341 | int i; |
2ebbc012 | 1342 | __be32 *p = *pp; |
81c3f413 | 1343 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
cc45f017 | 1344 | char *root = nfsd4_path(rqstp, exp, &status); |
81c3f413 | 1345 | |
cc45f017 AV |
1346 | if (status) |
1347 | return status; | |
81c3f413 BF |
1348 | status = nfsd4_encode_components('/', root, &p, buflen); |
1349 | if (status) | |
1350 | return status; | |
1351 | if ((*buflen -= 4) < 0) | |
1352 | return nfserr_resource; | |
1353 | WRITE32(fslocs->locations_count); | |
1354 | for (i=0; i<fslocs->locations_count; i++) { | |
1355 | status = nfsd4_encode_fs_location4(&fslocs->locations[i], | |
1356 | &p, buflen); | |
1357 | if (status) | |
1358 | return status; | |
1359 | } | |
1360 | *pp = p; | |
1361 | return 0; | |
1362 | } | |
1da177e4 LT |
1363 | |
1364 | static u32 nfs4_ftypes[16] = { | |
1365 | NF4BAD, NF4FIFO, NF4CHR, NF4BAD, | |
1366 | NF4DIR, NF4BAD, NF4BLK, NF4BAD, | |
1367 | NF4REG, NF4BAD, NF4LNK, NF4BAD, | |
1368 | NF4SOCK, NF4BAD, NF4LNK, NF4BAD, | |
1369 | }; | |
1370 | ||
b37ad28b | 1371 | static __be32 |
1da177e4 | 1372 | nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
2ebbc012 | 1373 | __be32 **p, int *buflen) |
1da177e4 LT |
1374 | { |
1375 | int status; | |
1376 | ||
1377 | if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) | |
1378 | return nfserr_resource; | |
1379 | if (whotype != NFS4_ACL_WHO_NAMED) | |
1380 | status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); | |
1381 | else if (group) | |
1382 | status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1383 | else | |
1384 | status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1385 | if (status < 0) | |
1386 | return nfserrno(status); | |
1387 | *p = xdr_encode_opaque(*p, NULL, status); | |
1388 | *buflen -= (XDR_QUADLEN(status) << 2) + 4; | |
1389 | BUG_ON(*buflen < 0); | |
1390 | return 0; | |
1391 | } | |
1392 | ||
b37ad28b | 1393 | static inline __be32 |
2ebbc012 | 1394 | nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, __be32 **p, int *buflen) |
1da177e4 LT |
1395 | { |
1396 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen); | |
1397 | } | |
1398 | ||
b37ad28b | 1399 | static inline __be32 |
2ebbc012 | 1400 | nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, __be32 **p, int *buflen) |
1da177e4 LT |
1401 | { |
1402 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen); | |
1403 | } | |
1404 | ||
b37ad28b | 1405 | static inline __be32 |
1da177e4 | 1406 | nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
2ebbc012 | 1407 | __be32 **p, int *buflen) |
1da177e4 LT |
1408 | { |
1409 | return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen); | |
1410 | } | |
1411 | ||
42ca0993 BF |
1412 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
1413 | FATTR4_WORD0_RDATTR_ERROR) | |
1414 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
1415 | ||
b37ad28b | 1416 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
42ca0993 BF |
1417 | { |
1418 | /* As per referral draft: */ | |
1419 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
1420 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
1421 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
1422 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
1423 | *rdattr_err = NFSERR_MOVED; | |
1424 | else | |
1425 | return nfserr_moved; | |
1426 | } | |
1427 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
1428 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
1429 | return 0; | |
1430 | } | |
1da177e4 LT |
1431 | |
1432 | /* | |
1433 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
1434 | * ourselves. | |
1435 | * | |
1436 | * @countp is the buffer size in _words_; upon successful return this becomes | |
1437 | * replaced with the number of words written. | |
1438 | */ | |
b37ad28b | 1439 | __be32 |
1da177e4 | 1440 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, |
2ebbc012 | 1441 | struct dentry *dentry, __be32 *buffer, int *countp, u32 *bmval, |
406a7ea9 | 1442 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
1443 | { |
1444 | u32 bmval0 = bmval[0]; | |
1445 | u32 bmval1 = bmval[1]; | |
1446 | struct kstat stat; | |
1447 | struct svc_fh tempfh; | |
1448 | struct kstatfs statfs; | |
1449 | int buflen = *countp << 2; | |
2ebbc012 | 1450 | __be32 *attrlenp; |
1da177e4 LT |
1451 | u32 dummy; |
1452 | u64 dummy64; | |
42ca0993 | 1453 | u32 rdattr_err = 0; |
2ebbc012 | 1454 | __be32 *p = buffer; |
b37ad28b | 1455 | __be32 status; |
b8dd7b9a | 1456 | int err; |
1da177e4 LT |
1457 | int aclsupport = 0; |
1458 | struct nfs4_acl *acl = NULL; | |
1459 | ||
1460 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
1461 | BUG_ON(bmval0 & ~NFSD_SUPPORTED_ATTRS_WORD0); | |
1462 | BUG_ON(bmval1 & ~NFSD_SUPPORTED_ATTRS_WORD1); | |
1463 | ||
42ca0993 BF |
1464 | if (exp->ex_fslocs.migrated) { |
1465 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); | |
1466 | if (status) | |
1467 | goto out; | |
1468 | } | |
1469 | ||
54775491 | 1470 | err = vfs_getattr(exp->ex_path.mnt, dentry, &stat); |
b8dd7b9a | 1471 | if (err) |
1da177e4 | 1472 | goto out_nfserr; |
a16e92ed BF |
1473 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | |
1474 | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
1475 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
1476 | FATTR4_WORD1_SPACE_TOTAL))) { | |
b8dd7b9a AV |
1477 | err = vfs_statfs(dentry, &statfs); |
1478 | if (err) | |
1da177e4 LT |
1479 | goto out_nfserr; |
1480 | } | |
1481 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
1482 | fh_init(&tempfh, NFS4_FHSIZE); | |
1483 | status = fh_compose(&tempfh, exp, dentry, NULL); | |
1484 | if (status) | |
1485 | goto out; | |
1486 | fhp = &tempfh; | |
1487 | } | |
1488 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
1489 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
b8dd7b9a AV |
1490 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
1491 | aclsupport = (err == 0); | |
1da177e4 | 1492 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 1493 | if (err == -EOPNOTSUPP) |
1da177e4 | 1494 | bmval0 &= ~FATTR4_WORD0_ACL; |
b8dd7b9a | 1495 | else if (err == -EINVAL) { |
1da177e4 LT |
1496 | status = nfserr_attrnotsupp; |
1497 | goto out; | |
b8dd7b9a | 1498 | } else if (err != 0) |
1da177e4 LT |
1499 | goto out_nfserr; |
1500 | } | |
1501 | } | |
81c3f413 BF |
1502 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
1503 | if (exp->ex_fslocs.locations == NULL) { | |
1504 | bmval0 &= ~FATTR4_WORD0_FS_LOCATIONS; | |
1505 | } | |
1506 | } | |
1da177e4 LT |
1507 | if ((buflen -= 16) < 0) |
1508 | goto out_resource; | |
1509 | ||
1510 | WRITE32(2); | |
1511 | WRITE32(bmval0); | |
1512 | WRITE32(bmval1); | |
1513 | attrlenp = p++; /* to be backfilled later */ | |
1514 | ||
1515 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
42ca0993 | 1516 | u32 word0 = NFSD_SUPPORTED_ATTRS_WORD0; |
1da177e4 LT |
1517 | if ((buflen -= 12) < 0) |
1518 | goto out_resource; | |
42ca0993 BF |
1519 | if (!aclsupport) |
1520 | word0 &= ~FATTR4_WORD0_ACL; | |
1521 | if (!exp->ex_fslocs.locations) | |
1522 | word0 &= ~FATTR4_WORD0_FS_LOCATIONS; | |
1da177e4 | 1523 | WRITE32(2); |
42ca0993 | 1524 | WRITE32(word0); |
1da177e4 LT |
1525 | WRITE32(NFSD_SUPPORTED_ATTRS_WORD1); |
1526 | } | |
1527 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
1528 | if ((buflen -= 4) < 0) | |
1529 | goto out_resource; | |
1530 | dummy = nfs4_ftypes[(stat.mode & S_IFMT) >> 12]; | |
1531 | if (dummy == NF4BAD) | |
1532 | goto out_serverfault; | |
1533 | WRITE32(dummy); | |
1534 | } | |
1535 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
1536 | if ((buflen -= 4) < 0) | |
1537 | goto out_resource; | |
49640001 | 1538 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
e34ac862 | 1539 | WRITE32(NFS4_FH_PERSISTENT); |
49640001 | 1540 | else |
e34ac862 | 1541 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
1da177e4 LT |
1542 | } |
1543 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
1544 | /* | |
1545 | * Note: This _must_ be consistent with the scheme for writing | |
1546 | * change_info, so any changes made here must be reflected there | |
1547 | * as well. (See xdr4.h:set_change_info() and the WRITECINFO() | |
1548 | * macro above.) | |
1549 | */ | |
1550 | if ((buflen -= 8) < 0) | |
1551 | goto out_resource; | |
1552 | WRITE32(stat.ctime.tv_sec); | |
1553 | WRITE32(stat.ctime.tv_nsec); | |
1554 | } | |
1555 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
1556 | if ((buflen -= 8) < 0) | |
1557 | goto out_resource; | |
1558 | WRITE64(stat.size); | |
1559 | } | |
1560 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
1561 | if ((buflen -= 4) < 0) | |
1562 | goto out_resource; | |
1563 | WRITE32(1); | |
1564 | } | |
1565 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
1566 | if ((buflen -= 4) < 0) | |
1567 | goto out_resource; | |
1568 | WRITE32(1); | |
1569 | } | |
1570 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
1571 | if ((buflen -= 4) < 0) | |
1572 | goto out_resource; | |
1573 | WRITE32(0); | |
1574 | } | |
1575 | if (bmval0 & FATTR4_WORD0_FSID) { | |
1576 | if ((buflen -= 16) < 0) | |
1577 | goto out_resource; | |
42ca0993 BF |
1578 | if (exp->ex_fslocs.migrated) { |
1579 | WRITE64(NFS4_REFERRAL_FSID_MAJOR); | |
1580 | WRITE64(NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
1581 | } else switch(fsid_source(fhp)) { |
1582 | case FSIDSOURCE_FSID: | |
1da177e4 LT |
1583 | WRITE64((u64)exp->ex_fsid); |
1584 | WRITE64((u64)0); | |
af6a4e28 N |
1585 | break; |
1586 | case FSIDSOURCE_DEV: | |
1da177e4 LT |
1587 | WRITE32(0); |
1588 | WRITE32(MAJOR(stat.dev)); | |
1589 | WRITE32(0); | |
1590 | WRITE32(MINOR(stat.dev)); | |
af6a4e28 N |
1591 | break; |
1592 | case FSIDSOURCE_UUID: | |
1593 | WRITEMEM(exp->ex_uuid, 16); | |
1594 | break; | |
1da177e4 LT |
1595 | } |
1596 | } | |
1597 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
1598 | if ((buflen -= 4) < 0) | |
1599 | goto out_resource; | |
1600 | WRITE32(0); | |
1601 | } | |
1602 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
1603 | if ((buflen -= 4) < 0) | |
1604 | goto out_resource; | |
1605 | WRITE32(NFSD_LEASE_TIME); | |
1606 | } | |
1607 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
1608 | if ((buflen -= 4) < 0) | |
1609 | goto out_resource; | |
42ca0993 | 1610 | WRITE32(rdattr_err); |
1da177e4 LT |
1611 | } |
1612 | if (bmval0 & FATTR4_WORD0_ACL) { | |
1613 | struct nfs4_ace *ace; | |
1da177e4 LT |
1614 | |
1615 | if (acl == NULL) { | |
1616 | if ((buflen -= 4) < 0) | |
1617 | goto out_resource; | |
1618 | ||
1619 | WRITE32(0); | |
1620 | goto out_acl; | |
1621 | } | |
1622 | if ((buflen -= 4) < 0) | |
1623 | goto out_resource; | |
1624 | WRITE32(acl->naces); | |
1625 | ||
28e05dd8 | 1626 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
1da177e4 LT |
1627 | if ((buflen -= 4*3) < 0) |
1628 | goto out_resource; | |
1629 | WRITE32(ace->type); | |
1630 | WRITE32(ace->flag); | |
1631 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); | |
1632 | status = nfsd4_encode_aclname(rqstp, ace->whotype, | |
1633 | ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP, | |
1634 | &p, &buflen); | |
1635 | if (status == nfserr_resource) | |
1636 | goto out_resource; | |
1637 | if (status) | |
1638 | goto out; | |
1639 | } | |
1640 | } | |
1641 | out_acl: | |
1642 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
1643 | if ((buflen -= 4) < 0) | |
1644 | goto out_resource; | |
1645 | WRITE32(aclsupport ? | |
1646 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); | |
1647 | } | |
1648 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
1649 | if ((buflen -= 4) < 0) | |
1650 | goto out_resource; | |
1651 | WRITE32(1); | |
1652 | } | |
1653 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
1654 | if ((buflen -= 4) < 0) | |
1655 | goto out_resource; | |
1656 | WRITE32(1); | |
1657 | } | |
1658 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
1659 | if ((buflen -= 4) < 0) | |
1660 | goto out_resource; | |
1661 | WRITE32(1); | |
1662 | } | |
1663 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
1664 | if ((buflen -= 4) < 0) | |
1665 | goto out_resource; | |
1666 | WRITE32(1); | |
1667 | } | |
1668 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
1669 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; | |
1670 | if (buflen < 0) | |
1671 | goto out_resource; | |
1672 | WRITE32(fhp->fh_handle.fh_size); | |
1673 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); | |
1674 | } | |
1675 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
1676 | if ((buflen -= 8) < 0) | |
1677 | goto out_resource; | |
40ee5dc6 | 1678 | WRITE64(stat.ino); |
1da177e4 LT |
1679 | } |
1680 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
1681 | if ((buflen -= 8) < 0) | |
1682 | goto out_resource; | |
1683 | WRITE64((u64) statfs.f_ffree); | |
1684 | } | |
1685 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
1686 | if ((buflen -= 8) < 0) | |
1687 | goto out_resource; | |
1688 | WRITE64((u64) statfs.f_ffree); | |
1689 | } | |
1690 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
1691 | if ((buflen -= 8) < 0) | |
1692 | goto out_resource; | |
1693 | WRITE64((u64) statfs.f_files); | |
1694 | } | |
81c3f413 BF |
1695 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
1696 | status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); | |
1697 | if (status == nfserr_resource) | |
1698 | goto out_resource; | |
1699 | if (status) | |
1700 | goto out; | |
1701 | } | |
1da177e4 LT |
1702 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
1703 | if ((buflen -= 4) < 0) | |
1704 | goto out_resource; | |
1705 | WRITE32(1); | |
1706 | } | |
1707 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
1708 | if ((buflen -= 8) < 0) | |
1709 | goto out_resource; | |
1710 | WRITE64(~(u64)0); | |
1711 | } | |
1712 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
1713 | if ((buflen -= 4) < 0) | |
1714 | goto out_resource; | |
1715 | WRITE32(255); | |
1716 | } | |
1717 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
1718 | if ((buflen -= 4) < 0) | |
1719 | goto out_resource; | |
a16e92ed | 1720 | WRITE32(statfs.f_namelen); |
1da177e4 LT |
1721 | } |
1722 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
1723 | if ((buflen -= 8) < 0) | |
1724 | goto out_resource; | |
7adae489 | 1725 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
1726 | } |
1727 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
1728 | if ((buflen -= 8) < 0) | |
1729 | goto out_resource; | |
7adae489 | 1730 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
1731 | } |
1732 | if (bmval1 & FATTR4_WORD1_MODE) { | |
1733 | if ((buflen -= 4) < 0) | |
1734 | goto out_resource; | |
1735 | WRITE32(stat.mode & S_IALLUGO); | |
1736 | } | |
1737 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
1738 | if ((buflen -= 4) < 0) | |
1739 | goto out_resource; | |
1740 | WRITE32(1); | |
1741 | } | |
1742 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
1743 | if ((buflen -= 4) < 0) | |
1744 | goto out_resource; | |
1745 | WRITE32(stat.nlink); | |
1746 | } | |
1747 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
1748 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); | |
1749 | if (status == nfserr_resource) | |
1750 | goto out_resource; | |
1751 | if (status) | |
1752 | goto out; | |
1753 | } | |
1754 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
1755 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); | |
1756 | if (status == nfserr_resource) | |
1757 | goto out_resource; | |
1758 | if (status) | |
1759 | goto out; | |
1760 | } | |
1761 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
1762 | if ((buflen -= 8) < 0) | |
1763 | goto out_resource; | |
1764 | WRITE32((u32) MAJOR(stat.rdev)); | |
1765 | WRITE32((u32) MINOR(stat.rdev)); | |
1766 | } | |
1767 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
1768 | if ((buflen -= 8) < 0) | |
1769 | goto out_resource; | |
1770 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
1771 | WRITE64(dummy64); | |
1772 | } | |
1773 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
1774 | if ((buflen -= 8) < 0) | |
1775 | goto out_resource; | |
1776 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
1777 | WRITE64(dummy64); | |
1778 | } | |
1779 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
1780 | if ((buflen -= 8) < 0) | |
1781 | goto out_resource; | |
1782 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
1783 | WRITE64(dummy64); | |
1784 | } | |
1785 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
1786 | if ((buflen -= 8) < 0) | |
1787 | goto out_resource; | |
1788 | dummy64 = (u64)stat.blocks << 9; | |
1789 | WRITE64(dummy64); | |
1790 | } | |
1791 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
1792 | if ((buflen -= 12) < 0) | |
1793 | goto out_resource; | |
1794 | WRITE32(0); | |
1795 | WRITE32(stat.atime.tv_sec); | |
1796 | WRITE32(stat.atime.tv_nsec); | |
1797 | } | |
1798 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
1799 | if ((buflen -= 12) < 0) | |
1800 | goto out_resource; | |
1801 | WRITE32(0); | |
1802 | WRITE32(1); | |
1803 | WRITE32(0); | |
1804 | } | |
1805 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
1806 | if ((buflen -= 12) < 0) | |
1807 | goto out_resource; | |
1808 | WRITE32(0); | |
1809 | WRITE32(stat.ctime.tv_sec); | |
1810 | WRITE32(stat.ctime.tv_nsec); | |
1811 | } | |
1812 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
1813 | if ((buflen -= 12) < 0) | |
1814 | goto out_resource; | |
1815 | WRITE32(0); | |
1816 | WRITE32(stat.mtime.tv_sec); | |
1817 | WRITE32(stat.mtime.tv_nsec); | |
1818 | } | |
1819 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
1da177e4 LT |
1820 | if ((buflen -= 8) < 0) |
1821 | goto out_resource; | |
406a7ea9 FF |
1822 | /* |
1823 | * Get parent's attributes if not ignoring crossmount | |
1824 | * and this is the root of a cross-mounted filesystem. | |
1825 | */ | |
1826 | if (ignore_crossmnt == 0 && | |
54775491 JB |
1827 | exp->ex_path.mnt->mnt_root->d_inode == dentry->d_inode) { |
1828 | err = vfs_getattr(exp->ex_path.mnt->mnt_parent, | |
1829 | exp->ex_path.mnt->mnt_mountpoint, &stat); | |
40ee5dc6 PS |
1830 | if (err) |
1831 | goto out_nfserr; | |
1832 | } | |
1833 | WRITE64(stat.ino); | |
1da177e4 LT |
1834 | } |
1835 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
1836 | *countp = p - buffer; | |
1837 | status = nfs_ok; | |
1838 | ||
1839 | out: | |
28e05dd8 | 1840 | kfree(acl); |
1da177e4 LT |
1841 | if (fhp == &tempfh) |
1842 | fh_put(&tempfh); | |
1843 | return status; | |
1844 | out_nfserr: | |
b8dd7b9a | 1845 | status = nfserrno(err); |
1da177e4 LT |
1846 | goto out; |
1847 | out_resource: | |
1848 | *countp = 0; | |
1849 | status = nfserr_resource; | |
1850 | goto out; | |
1851 | out_serverfault: | |
1852 | status = nfserr_serverfault; | |
1853 | goto out; | |
1854 | } | |
1855 | ||
c0ce6ec8 BF |
1856 | static inline int attributes_need_mount(u32 *bmval) |
1857 | { | |
1858 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
1859 | return 1; | |
1860 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
1861 | return 1; | |
1862 | return 0; | |
1863 | } | |
1864 | ||
b37ad28b | 1865 | static __be32 |
1da177e4 | 1866 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, |
2ebbc012 | 1867 | const char *name, int namlen, __be32 *p, int *buflen) |
1da177e4 LT |
1868 | { |
1869 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
1870 | struct dentry *dentry; | |
b37ad28b | 1871 | __be32 nfserr; |
406a7ea9 | 1872 | int ignore_crossmnt = 0; |
1da177e4 LT |
1873 | |
1874 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
1875 | if (IS_ERR(dentry)) | |
1876 | return nfserrno(PTR_ERR(dentry)); | |
1877 | ||
1878 | exp_get(exp); | |
406a7ea9 FF |
1879 | /* |
1880 | * In the case of a mountpoint, the client may be asking for | |
1881 | * attributes that are only properties of the underlying filesystem | |
1882 | * as opposed to the cross-mounted file system. In such a case, | |
1883 | * we will not follow the cross mount and will fill the attribtutes | |
1884 | * directly from the mountpoint dentry. | |
1885 | */ | |
c0ce6ec8 | 1886 | if (d_mountpoint(dentry) && !attributes_need_mount(cd->rd_bmval)) |
406a7ea9 FF |
1887 | ignore_crossmnt = 1; |
1888 | else if (d_mountpoint(dentry)) { | |
021d3a72 BF |
1889 | int err; |
1890 | ||
dcb488a3 AA |
1891 | /* |
1892 | * Why the heck aren't we just using nfsd_lookup?? | |
1893 | * Different "."/".." handling? Something else? | |
1894 | * At least, add a comment here to explain.... | |
1895 | */ | |
021d3a72 BF |
1896 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
1897 | if (err) { | |
1898 | nfserr = nfserrno(err); | |
1da177e4 LT |
1899 | goto out_put; |
1900 | } | |
dcb488a3 AA |
1901 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
1902 | if (nfserr) | |
1903 | goto out_put; | |
1da177e4 LT |
1904 | |
1905 | } | |
1906 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, | |
406a7ea9 | 1907 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
1908 | out_put: |
1909 | dput(dentry); | |
1910 | exp_put(exp); | |
1911 | return nfserr; | |
1912 | } | |
1913 | ||
2ebbc012 | 1914 | static __be32 * |
b37ad28b | 1915 | nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr) |
1da177e4 | 1916 | { |
2ebbc012 | 1917 | __be32 *attrlenp; |
1da177e4 LT |
1918 | |
1919 | if (buflen < 6) | |
1920 | return NULL; | |
1921 | *p++ = htonl(2); | |
1922 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
1923 | *p++ = htonl(0); /* bmval1 */ | |
1924 | ||
1925 | attrlenp = p++; | |
1926 | *p++ = nfserr; /* no htonl */ | |
1927 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
1928 | return p; | |
1929 | } | |
1930 | ||
1931 | static int | |
a0ad13ef N |
1932 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
1933 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 1934 | { |
a0ad13ef | 1935 | struct readdir_cd *ccd = ccdv; |
1da177e4 LT |
1936 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
1937 | int buflen; | |
2ebbc012 | 1938 | __be32 *p = cd->buffer; |
b37ad28b | 1939 | __be32 nfserr = nfserr_toosmall; |
1da177e4 LT |
1940 | |
1941 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
1942 | if (name && isdotent(name, namlen)) { | |
1943 | cd->common.err = nfs_ok; | |
1944 | return 0; | |
1945 | } | |
1946 | ||
1947 | if (cd->offset) | |
1948 | xdr_encode_hyper(cd->offset, (u64) offset); | |
1949 | ||
1950 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); | |
1951 | if (buflen < 0) | |
1952 | goto fail; | |
1953 | ||
1954 | *p++ = xdr_one; /* mark entry present */ | |
1955 | cd->offset = p; /* remember pointer */ | |
1956 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ | |
1957 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
1958 | ||
1959 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen); | |
1960 | switch (nfserr) { | |
1961 | case nfs_ok: | |
1962 | p += buflen; | |
1963 | break; | |
1964 | case nfserr_resource: | |
1965 | nfserr = nfserr_toosmall; | |
1966 | goto fail; | |
1967 | case nfserr_dropit: | |
1968 | goto fail; | |
1969 | default: | |
1970 | /* | |
1971 | * If the client requested the RDATTR_ERROR attribute, | |
1972 | * we stuff the error code into this attribute | |
1973 | * and continue. If this attribute was not requested, | |
1974 | * then in accordance with the spec, we fail the | |
1975 | * entire READDIR operation(!) | |
1976 | */ | |
1977 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
1978 | goto fail; | |
1da177e4 | 1979 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
34081efc FI |
1980 | if (p == NULL) { |
1981 | nfserr = nfserr_toosmall; | |
1da177e4 | 1982 | goto fail; |
34081efc | 1983 | } |
1da177e4 LT |
1984 | } |
1985 | cd->buflen -= (p - cd->buffer); | |
1986 | cd->buffer = p; | |
1987 | cd->common.err = nfs_ok; | |
1988 | return 0; | |
1989 | fail: | |
1990 | cd->common.err = nfserr; | |
1991 | return -EINVAL; | |
1992 | } | |
1993 | ||
1994 | static void | |
b37ad28b | 1995 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 LT |
1996 | { |
1997 | ENCODE_HEAD; | |
1998 | ||
1999 | if (!nfserr) { | |
2000 | RESERVE_SPACE(8); | |
2001 | WRITE32(access->ac_supported); | |
2002 | WRITE32(access->ac_resp_access); | |
2003 | ADJUST_ARGS(); | |
2004 | } | |
2005 | } | |
2006 | ||
2007 | static void | |
b37ad28b | 2008 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 LT |
2009 | { |
2010 | ENCODE_SEQID_OP_HEAD; | |
2011 | ||
2012 | if (!nfserr) { | |
2013 | RESERVE_SPACE(sizeof(stateid_t)); | |
2014 | WRITE32(close->cl_stateid.si_generation); | |
2015 | WRITEMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
2016 | ADJUST_ARGS(); | |
2017 | } | |
2018 | ENCODE_SEQID_OP_TAIL(close->cl_stateowner); | |
2019 | } | |
2020 | ||
2021 | ||
2022 | static void | |
b37ad28b | 2023 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 LT |
2024 | { |
2025 | ENCODE_HEAD; | |
2026 | ||
2027 | if (!nfserr) { | |
2028 | RESERVE_SPACE(8); | |
2029 | WRITEMEM(commit->co_verf.data, 8); | |
2030 | ADJUST_ARGS(); | |
2031 | } | |
2032 | } | |
2033 | ||
2034 | static void | |
b37ad28b | 2035 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 LT |
2036 | { |
2037 | ENCODE_HEAD; | |
2038 | ||
2039 | if (!nfserr) { | |
2040 | RESERVE_SPACE(32); | |
2041 | WRITECINFO(create->cr_cinfo); | |
2042 | WRITE32(2); | |
2043 | WRITE32(create->cr_bmval[0]); | |
2044 | WRITE32(create->cr_bmval[1]); | |
2045 | ADJUST_ARGS(); | |
2046 | } | |
2047 | } | |
2048 | ||
b37ad28b AV |
2049 | static __be32 |
2050 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
2051 | { |
2052 | struct svc_fh *fhp = getattr->ga_fhp; | |
2053 | int buflen; | |
2054 | ||
2055 | if (nfserr) | |
2056 | return nfserr; | |
2057 | ||
2058 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); | |
2059 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, | |
2060 | resp->p, &buflen, getattr->ga_bmval, | |
406a7ea9 | 2061 | resp->rqstp, 0); |
1da177e4 LT |
2062 | if (!nfserr) |
2063 | resp->p += buflen; | |
2064 | return nfserr; | |
2065 | } | |
2066 | ||
2067 | static void | |
b37ad28b | 2068 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh *fhp) |
1da177e4 LT |
2069 | { |
2070 | unsigned int len; | |
2071 | ENCODE_HEAD; | |
2072 | ||
2073 | if (!nfserr) { | |
2074 | len = fhp->fh_handle.fh_size; | |
2075 | RESERVE_SPACE(len + 4); | |
2076 | WRITE32(len); | |
2077 | WRITEMEM(&fhp->fh_handle.fh_base, len); | |
2078 | ADJUST_ARGS(); | |
2079 | } | |
2080 | } | |
2081 | ||
2082 | /* | |
2083 | * Including all fields other than the name, a LOCK4denied structure requires | |
2084 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
2085 | */ | |
2086 | static void | |
2087 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) | |
2088 | { | |
2089 | ENCODE_HEAD; | |
2090 | ||
2091 | RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0)); | |
2092 | WRITE64(ld->ld_start); | |
2093 | WRITE64(ld->ld_length); | |
2094 | WRITE32(ld->ld_type); | |
2095 | if (ld->ld_sop) { | |
2096 | WRITEMEM(&ld->ld_clientid, 8); | |
2097 | WRITE32(ld->ld_sop->so_owner.len); | |
2098 | WRITEMEM(ld->ld_sop->so_owner.data, ld->ld_sop->so_owner.len); | |
2099 | kref_put(&ld->ld_sop->so_ref, nfs4_free_stateowner); | |
2100 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ | |
2101 | WRITE64((u64)0); /* clientid */ | |
2102 | WRITE32(0); /* length of owner name */ | |
2103 | } | |
2104 | ADJUST_ARGS(); | |
2105 | } | |
2106 | ||
2107 | static void | |
b37ad28b | 2108 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 2109 | { |
1da177e4 LT |
2110 | ENCODE_SEQID_OP_HEAD; |
2111 | ||
2112 | if (!nfserr) { | |
2113 | RESERVE_SPACE(4 + sizeof(stateid_t)); | |
2114 | WRITE32(lock->lk_resp_stateid.si_generation); | |
2115 | WRITEMEM(&lock->lk_resp_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
2116 | ADJUST_ARGS(); | |
2117 | } else if (nfserr == nfserr_denied) | |
2118 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); | |
2119 | ||
3a65588a | 2120 | ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner); |
1da177e4 LT |
2121 | } |
2122 | ||
2123 | static void | |
b37ad28b | 2124 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 LT |
2125 | { |
2126 | if (nfserr == nfserr_denied) | |
2127 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); | |
2128 | } | |
2129 | ||
2130 | static void | |
b37ad28b | 2131 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 LT |
2132 | { |
2133 | ENCODE_SEQID_OP_HEAD; | |
2134 | ||
2135 | if (!nfserr) { | |
2136 | RESERVE_SPACE(sizeof(stateid_t)); | |
2137 | WRITE32(locku->lu_stateid.si_generation); | |
2138 | WRITEMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
2139 | ADJUST_ARGS(); | |
2140 | } | |
2141 | ||
2142 | ENCODE_SEQID_OP_TAIL(locku->lu_stateowner); | |
2143 | } | |
2144 | ||
2145 | ||
2146 | static void | |
b37ad28b | 2147 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 LT |
2148 | { |
2149 | ENCODE_HEAD; | |
2150 | ||
2151 | if (!nfserr) { | |
2152 | RESERVE_SPACE(20); | |
2153 | WRITECINFO(link->li_cinfo); | |
2154 | ADJUST_ARGS(); | |
2155 | } | |
2156 | } | |
2157 | ||
2158 | ||
2159 | static void | |
b37ad28b | 2160 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 LT |
2161 | { |
2162 | ENCODE_SEQID_OP_HEAD; | |
2163 | ||
2164 | if (nfserr) | |
2165 | goto out; | |
2166 | ||
2167 | RESERVE_SPACE(36 + sizeof(stateid_t)); | |
2168 | WRITE32(open->op_stateid.si_generation); | |
2169 | WRITEMEM(&open->op_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
2170 | WRITECINFO(open->op_cinfo); | |
2171 | WRITE32(open->op_rflags); | |
2172 | WRITE32(2); | |
2173 | WRITE32(open->op_bmval[0]); | |
2174 | WRITE32(open->op_bmval[1]); | |
2175 | WRITE32(open->op_delegate_type); | |
2176 | ADJUST_ARGS(); | |
2177 | ||
2178 | switch (open->op_delegate_type) { | |
2179 | case NFS4_OPEN_DELEGATE_NONE: | |
2180 | break; | |
2181 | case NFS4_OPEN_DELEGATE_READ: | |
2182 | RESERVE_SPACE(20 + sizeof(stateid_t)); | |
2183 | WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t)); | |
7b190fec | 2184 | WRITE32(open->op_recall); |
1da177e4 LT |
2185 | |
2186 | /* | |
2187 | * TODO: ACE's in delegations | |
2188 | */ | |
2189 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2190 | WRITE32(0); | |
2191 | WRITE32(0); | |
2192 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2193 | ADJUST_ARGS(); | |
2194 | break; | |
2195 | case NFS4_OPEN_DELEGATE_WRITE: | |
2196 | RESERVE_SPACE(32 + sizeof(stateid_t)); | |
2197 | WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t)); | |
2198 | WRITE32(0); | |
2199 | ||
2200 | /* | |
2201 | * TODO: space_limit's in delegations | |
2202 | */ | |
2203 | WRITE32(NFS4_LIMIT_SIZE); | |
2204 | WRITE32(~(u32)0); | |
2205 | WRITE32(~(u32)0); | |
2206 | ||
2207 | /* | |
2208 | * TODO: ACE's in delegations | |
2209 | */ | |
2210 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2211 | WRITE32(0); | |
2212 | WRITE32(0); | |
2213 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2214 | ADJUST_ARGS(); | |
2215 | break; | |
2216 | default: | |
2217 | BUG(); | |
2218 | } | |
2219 | /* XXX save filehandle here */ | |
2220 | out: | |
2221 | ENCODE_SEQID_OP_TAIL(open->op_stateowner); | |
2222 | } | |
2223 | ||
2224 | static void | |
b37ad28b | 2225 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 LT |
2226 | { |
2227 | ENCODE_SEQID_OP_HEAD; | |
2228 | ||
2229 | if (!nfserr) { | |
2230 | RESERVE_SPACE(sizeof(stateid_t)); | |
2231 | WRITE32(oc->oc_resp_stateid.si_generation); | |
2232 | WRITEMEM(&oc->oc_resp_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
2233 | ADJUST_ARGS(); | |
2234 | } | |
2235 | ||
2236 | ENCODE_SEQID_OP_TAIL(oc->oc_stateowner); | |
2237 | } | |
2238 | ||
2239 | static void | |
b37ad28b | 2240 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 LT |
2241 | { |
2242 | ENCODE_SEQID_OP_HEAD; | |
2243 | ||
2244 | if (!nfserr) { | |
2245 | RESERVE_SPACE(sizeof(stateid_t)); | |
2246 | WRITE32(od->od_stateid.si_generation); | |
2247 | WRITEMEM(&od->od_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
2248 | ADJUST_ARGS(); | |
2249 | } | |
2250 | ||
2251 | ENCODE_SEQID_OP_TAIL(od->od_stateowner); | |
2252 | } | |
2253 | ||
b37ad28b AV |
2254 | static __be32 |
2255 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
44524359 | 2256 | struct nfsd4_read *read) |
1da177e4 LT |
2257 | { |
2258 | u32 eof; | |
2259 | int v, pn; | |
2260 | unsigned long maxcount; | |
2261 | long len; | |
2262 | ENCODE_HEAD; | |
2263 | ||
2264 | if (nfserr) | |
2265 | return nfserr; | |
2266 | if (resp->xbuf->page_len) | |
2267 | return nfserr_resource; | |
2268 | ||
2269 | RESERVE_SPACE(8); /* eof flag and byte count */ | |
2270 | ||
7adae489 | 2271 | maxcount = svc_max_payload(resp->rqstp); |
1da177e4 LT |
2272 | if (maxcount > read->rd_length) |
2273 | maxcount = read->rd_length; | |
2274 | ||
2275 | len = maxcount; | |
2276 | v = 0; | |
2277 | while (len > 0) { | |
44524359 | 2278 | pn = resp->rqstp->rq_resused++; |
3cc03b16 | 2279 | resp->rqstp->rq_vec[v].iov_base = |
44524359 | 2280 | page_address(resp->rqstp->rq_respages[pn]); |
3cc03b16 | 2281 | resp->rqstp->rq_vec[v].iov_len = |
44524359 | 2282 | len < PAGE_SIZE ? len : PAGE_SIZE; |
1da177e4 LT |
2283 | v++; |
2284 | len -= PAGE_SIZE; | |
2285 | } | |
2286 | read->rd_vlen = v; | |
2287 | ||
2288 | nfserr = nfsd_read(read->rd_rqstp, read->rd_fhp, read->rd_filp, | |
3cc03b16 | 2289 | read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, |
1da177e4 LT |
2290 | &maxcount); |
2291 | ||
2292 | if (nfserr == nfserr_symlink) | |
2293 | nfserr = nfserr_inval; | |
2294 | if (nfserr) | |
2295 | return nfserr; | |
44524359 N |
2296 | eof = (read->rd_offset + maxcount >= |
2297 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 LT |
2298 | |
2299 | WRITE32(eof); | |
2300 | WRITE32(maxcount); | |
2301 | ADJUST_ARGS(); | |
6ed6decc N |
2302 | resp->xbuf->head[0].iov_len = (char*)p |
2303 | - (char*)resp->xbuf->head[0].iov_base; | |
1da177e4 LT |
2304 | resp->xbuf->page_len = maxcount; |
2305 | ||
6ed6decc | 2306 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2307 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2308 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2309 | if (maxcount&3) { |
6ed6decc N |
2310 | RESERVE_SPACE(4); |
2311 | WRITE32(0); | |
1da177e4 LT |
2312 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2313 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2314 | ADJUST_ARGS(); |
1da177e4 LT |
2315 | } |
2316 | return 0; | |
2317 | } | |
2318 | ||
b37ad28b AV |
2319 | static __be32 |
2320 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
2321 | { |
2322 | int maxcount; | |
2323 | char *page; | |
2324 | ENCODE_HEAD; | |
2325 | ||
2326 | if (nfserr) | |
2327 | return nfserr; | |
2328 | if (resp->xbuf->page_len) | |
2329 | return nfserr_resource; | |
2330 | ||
44524359 | 2331 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
1da177e4 LT |
2332 | |
2333 | maxcount = PAGE_SIZE; | |
2334 | RESERVE_SPACE(4); | |
2335 | ||
2336 | /* | |
2337 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
2338 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
2339 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
2340 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
2341 | */ | |
2342 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); | |
2343 | if (nfserr == nfserr_isdir) | |
2344 | return nfserr_inval; | |
2345 | if (nfserr) | |
2346 | return nfserr; | |
2347 | ||
2348 | WRITE32(maxcount); | |
2349 | ADJUST_ARGS(); | |
6ed6decc N |
2350 | resp->xbuf->head[0].iov_len = (char*)p |
2351 | - (char*)resp->xbuf->head[0].iov_base; | |
2352 | resp->xbuf->page_len = maxcount; | |
1da177e4 | 2353 | |
6ed6decc | 2354 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2355 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2356 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2357 | if (maxcount&3) { |
6ed6decc N |
2358 | RESERVE_SPACE(4); |
2359 | WRITE32(0); | |
1da177e4 LT |
2360 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2361 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2362 | ADJUST_ARGS(); |
1da177e4 LT |
2363 | } |
2364 | return 0; | |
2365 | } | |
2366 | ||
b37ad28b AV |
2367 | static __be32 |
2368 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
2369 | { |
2370 | int maxcount; | |
2371 | loff_t offset; | |
2ebbc012 | 2372 | __be32 *page, *savep, *tailbase; |
1da177e4 LT |
2373 | ENCODE_HEAD; |
2374 | ||
2375 | if (nfserr) | |
2376 | return nfserr; | |
2377 | if (resp->xbuf->page_len) | |
2378 | return nfserr_resource; | |
2379 | ||
2380 | RESERVE_SPACE(8); /* verifier */ | |
2381 | savep = p; | |
2382 | ||
2383 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
2384 | WRITE32(0); | |
2385 | WRITE32(0); | |
2386 | ADJUST_ARGS(); | |
2387 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; | |
bb6e8a9f | 2388 | tailbase = p; |
1da177e4 LT |
2389 | |
2390 | maxcount = PAGE_SIZE; | |
2391 | if (maxcount > readdir->rd_maxcount) | |
2392 | maxcount = readdir->rd_maxcount; | |
2393 | ||
2394 | /* | |
2395 | * Convert from bytes to words, account for the two words already | |
2396 | * written, make sure to leave two words at the end for the next | |
2397 | * pointer and eof field. | |
2398 | */ | |
2399 | maxcount = (maxcount >> 2) - 4; | |
2400 | if (maxcount < 0) { | |
2401 | nfserr = nfserr_toosmall; | |
2402 | goto err_no_verf; | |
2403 | } | |
2404 | ||
44524359 | 2405 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
1da177e4 LT |
2406 | readdir->common.err = 0; |
2407 | readdir->buflen = maxcount; | |
2408 | readdir->buffer = page; | |
2409 | readdir->offset = NULL; | |
2410 | ||
2411 | offset = readdir->rd_cookie; | |
2412 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
2413 | &offset, | |
2414 | &readdir->common, nfsd4_encode_dirent); | |
2415 | if (nfserr == nfs_ok && | |
2416 | readdir->common.err == nfserr_toosmall && | |
2417 | readdir->buffer == page) | |
2418 | nfserr = nfserr_toosmall; | |
2419 | if (nfserr == nfserr_symlink) | |
2420 | nfserr = nfserr_notdir; | |
2421 | if (nfserr) | |
2422 | goto err_no_verf; | |
2423 | ||
2424 | if (readdir->offset) | |
2425 | xdr_encode_hyper(readdir->offset, offset); | |
2426 | ||
2427 | p = readdir->buffer; | |
2428 | *p++ = 0; /* no more entries */ | |
2429 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
44524359 N |
2430 | resp->xbuf->page_len = ((char*)p) - (char*)page_address( |
2431 | resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); | |
1da177e4 | 2432 | |
bb6e8a9f | 2433 | /* Use rest of head for padding and remaining ops: */ |
bb6e8a9f | 2434 | resp->xbuf->tail[0].iov_base = tailbase; |
1da177e4 LT |
2435 | resp->xbuf->tail[0].iov_len = 0; |
2436 | resp->p = resp->xbuf->tail[0].iov_base; | |
bb6e8a9f | 2437 | resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; |
1da177e4 LT |
2438 | |
2439 | return 0; | |
2440 | err_no_verf: | |
2441 | p = savep; | |
2442 | ADJUST_ARGS(); | |
2443 | return nfserr; | |
2444 | } | |
2445 | ||
2446 | static void | |
b37ad28b | 2447 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 LT |
2448 | { |
2449 | ENCODE_HEAD; | |
2450 | ||
2451 | if (!nfserr) { | |
2452 | RESERVE_SPACE(20); | |
2453 | WRITECINFO(remove->rm_cinfo); | |
2454 | ADJUST_ARGS(); | |
2455 | } | |
2456 | } | |
2457 | ||
2458 | static void | |
b37ad28b | 2459 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 LT |
2460 | { |
2461 | ENCODE_HEAD; | |
2462 | ||
2463 | if (!nfserr) { | |
2464 | RESERVE_SPACE(40); | |
2465 | WRITECINFO(rename->rn_sinfo); | |
2466 | WRITECINFO(rename->rn_tinfo); | |
2467 | ADJUST_ARGS(); | |
2468 | } | |
2469 | } | |
2470 | ||
dcb488a3 | 2471 | static void |
ca5c8cde | 2472 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, |
dcb488a3 AA |
2473 | struct nfsd4_secinfo *secinfo) |
2474 | { | |
2475 | int i = 0; | |
2476 | struct svc_export *exp = secinfo->si_exp; | |
4796f457 BF |
2477 | u32 nflavs; |
2478 | struct exp_flavor_info *flavs; | |
2479 | struct exp_flavor_info def_flavs[2]; | |
dcb488a3 AA |
2480 | ENCODE_HEAD; |
2481 | ||
2482 | if (nfserr) | |
2483 | goto out; | |
4796f457 BF |
2484 | if (exp->ex_nflavors) { |
2485 | flavs = exp->ex_flavors; | |
2486 | nflavs = exp->ex_nflavors; | |
2487 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
2488 | flavs = def_flavs; | |
2489 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
2490 | nflavs = 2; | |
2491 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
2492 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
2493 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
2494 | nflavs = 1; | |
2495 | flavs[0].pseudoflavor | |
2496 | = svcauth_gss_flavor(exp->ex_client); | |
2497 | } else { | |
2498 | nflavs = 1; | |
2499 | flavs[0].pseudoflavor | |
2500 | = exp->ex_client->flavour->flavour; | |
2501 | } | |
2502 | } | |
2503 | ||
dcb488a3 | 2504 | RESERVE_SPACE(4); |
4796f457 | 2505 | WRITE32(nflavs); |
dcb488a3 | 2506 | ADJUST_ARGS(); |
4796f457 BF |
2507 | for (i = 0; i < nflavs; i++) { |
2508 | u32 flav = flavs[i].pseudoflavor; | |
dcb488a3 AA |
2509 | struct gss_api_mech *gm = gss_mech_get_by_pseudoflavor(flav); |
2510 | ||
2511 | if (gm) { | |
2512 | RESERVE_SPACE(4); | |
2513 | WRITE32(RPC_AUTH_GSS); | |
2514 | ADJUST_ARGS(); | |
2515 | RESERVE_SPACE(4 + gm->gm_oid.len); | |
2516 | WRITE32(gm->gm_oid.len); | |
2517 | WRITEMEM(gm->gm_oid.data, gm->gm_oid.len); | |
2518 | ADJUST_ARGS(); | |
2519 | RESERVE_SPACE(4); | |
2520 | WRITE32(0); /* qop */ | |
2521 | ADJUST_ARGS(); | |
2522 | RESERVE_SPACE(4); | |
2523 | WRITE32(gss_pseudoflavor_to_service(gm, flav)); | |
2524 | ADJUST_ARGS(); | |
2525 | gss_mech_put(gm); | |
2526 | } else { | |
2527 | RESERVE_SPACE(4); | |
2528 | WRITE32(flav); | |
2529 | ADJUST_ARGS(); | |
2530 | } | |
2531 | } | |
2532 | out: | |
2533 | if (exp) | |
2534 | exp_put(exp); | |
2535 | } | |
2536 | ||
1da177e4 LT |
2537 | /* |
2538 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
2539 | * regardless of the error status. | |
2540 | */ | |
2541 | static void | |
b37ad28b | 2542 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 LT |
2543 | { |
2544 | ENCODE_HEAD; | |
2545 | ||
2546 | RESERVE_SPACE(12); | |
2547 | if (nfserr) { | |
2548 | WRITE32(2); | |
2549 | WRITE32(0); | |
2550 | WRITE32(0); | |
2551 | } | |
2552 | else { | |
2553 | WRITE32(2); | |
2554 | WRITE32(setattr->sa_bmval[0]); | |
2555 | WRITE32(setattr->sa_bmval[1]); | |
2556 | } | |
2557 | ADJUST_ARGS(); | |
2558 | } | |
2559 | ||
2560 | static void | |
b37ad28b | 2561 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 LT |
2562 | { |
2563 | ENCODE_HEAD; | |
2564 | ||
2565 | if (!nfserr) { | |
2566 | RESERVE_SPACE(8 + sizeof(nfs4_verifier)); | |
2567 | WRITEMEM(&scd->se_clientid, 8); | |
2568 | WRITEMEM(&scd->se_confirm, sizeof(nfs4_verifier)); | |
2569 | ADJUST_ARGS(); | |
2570 | } | |
2571 | else if (nfserr == nfserr_clid_inuse) { | |
2572 | RESERVE_SPACE(8); | |
2573 | WRITE32(0); | |
2574 | WRITE32(0); | |
2575 | ADJUST_ARGS(); | |
2576 | } | |
2577 | } | |
2578 | ||
2579 | static void | |
b37ad28b | 2580 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 LT |
2581 | { |
2582 | ENCODE_HEAD; | |
2583 | ||
2584 | if (!nfserr) { | |
2585 | RESERVE_SPACE(16); | |
2586 | WRITE32(write->wr_bytes_written); | |
2587 | WRITE32(write->wr_how_written); | |
2588 | WRITEMEM(write->wr_verifier.data, 8); | |
2589 | ADJUST_ARGS(); | |
2590 | } | |
2591 | } | |
2592 | ||
2593 | void | |
2594 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
2595 | { | |
2ebbc012 | 2596 | __be32 *statp; |
1da177e4 LT |
2597 | ENCODE_HEAD; |
2598 | ||
2599 | RESERVE_SPACE(8); | |
2600 | WRITE32(op->opnum); | |
2601 | statp = p++; /* to be backfilled at the end */ | |
2602 | ADJUST_ARGS(); | |
2603 | ||
2604 | switch (op->opnum) { | |
2605 | case OP_ACCESS: | |
2606 | nfsd4_encode_access(resp, op->status, &op->u.access); | |
2607 | break; | |
2608 | case OP_CLOSE: | |
2609 | nfsd4_encode_close(resp, op->status, &op->u.close); | |
2610 | break; | |
2611 | case OP_COMMIT: | |
2612 | nfsd4_encode_commit(resp, op->status, &op->u.commit); | |
2613 | break; | |
2614 | case OP_CREATE: | |
2615 | nfsd4_encode_create(resp, op->status, &op->u.create); | |
2616 | break; | |
2617 | case OP_DELEGRETURN: | |
2618 | break; | |
2619 | case OP_GETATTR: | |
2620 | op->status = nfsd4_encode_getattr(resp, op->status, &op->u.getattr); | |
2621 | break; | |
2622 | case OP_GETFH: | |
2623 | nfsd4_encode_getfh(resp, op->status, op->u.getfh); | |
2624 | break; | |
2625 | case OP_LINK: | |
2626 | nfsd4_encode_link(resp, op->status, &op->u.link); | |
2627 | break; | |
2628 | case OP_LOCK: | |
2629 | nfsd4_encode_lock(resp, op->status, &op->u.lock); | |
2630 | break; | |
2631 | case OP_LOCKT: | |
2632 | nfsd4_encode_lockt(resp, op->status, &op->u.lockt); | |
2633 | break; | |
2634 | case OP_LOCKU: | |
2635 | nfsd4_encode_locku(resp, op->status, &op->u.locku); | |
2636 | break; | |
2637 | case OP_LOOKUP: | |
2638 | break; | |
2639 | case OP_LOOKUPP: | |
2640 | break; | |
2641 | case OP_NVERIFY: | |
2642 | break; | |
2643 | case OP_OPEN: | |
2644 | nfsd4_encode_open(resp, op->status, &op->u.open); | |
2645 | break; | |
2646 | case OP_OPEN_CONFIRM: | |
2647 | nfsd4_encode_open_confirm(resp, op->status, &op->u.open_confirm); | |
2648 | break; | |
2649 | case OP_OPEN_DOWNGRADE: | |
2650 | nfsd4_encode_open_downgrade(resp, op->status, &op->u.open_downgrade); | |
2651 | break; | |
2652 | case OP_PUTFH: | |
2653 | break; | |
2654 | case OP_PUTROOTFH: | |
2655 | break; | |
2656 | case OP_READ: | |
2657 | op->status = nfsd4_encode_read(resp, op->status, &op->u.read); | |
2658 | break; | |
2659 | case OP_READDIR: | |
2660 | op->status = nfsd4_encode_readdir(resp, op->status, &op->u.readdir); | |
2661 | break; | |
2662 | case OP_READLINK: | |
2663 | op->status = nfsd4_encode_readlink(resp, op->status, &op->u.readlink); | |
2664 | break; | |
2665 | case OP_REMOVE: | |
2666 | nfsd4_encode_remove(resp, op->status, &op->u.remove); | |
2667 | break; | |
2668 | case OP_RENAME: | |
2669 | nfsd4_encode_rename(resp, op->status, &op->u.rename); | |
2670 | break; | |
2671 | case OP_RENEW: | |
2672 | break; | |
2673 | case OP_RESTOREFH: | |
2674 | break; | |
2675 | case OP_SAVEFH: | |
2676 | break; | |
dcb488a3 AA |
2677 | case OP_SECINFO: |
2678 | nfsd4_encode_secinfo(resp, op->status, &op->u.secinfo); | |
2679 | break; | |
1da177e4 LT |
2680 | case OP_SETATTR: |
2681 | nfsd4_encode_setattr(resp, op->status, &op->u.setattr); | |
2682 | break; | |
2683 | case OP_SETCLIENTID: | |
2684 | nfsd4_encode_setclientid(resp, op->status, &op->u.setclientid); | |
2685 | break; | |
2686 | case OP_SETCLIENTID_CONFIRM: | |
2687 | break; | |
2688 | case OP_VERIFY: | |
2689 | break; | |
2690 | case OP_WRITE: | |
2691 | nfsd4_encode_write(resp, op->status, &op->u.write); | |
2692 | break; | |
2693 | case OP_RELEASE_LOCKOWNER: | |
2694 | break; | |
2695 | default: | |
2696 | break; | |
2697 | } | |
2698 | ||
2699 | /* | |
2700 | * Note: We write the status directly, instead of using WRITE32(), | |
2701 | * since it is already in network byte order. | |
2702 | */ | |
2703 | *statp = op->status; | |
2704 | } | |
2705 | ||
2706 | /* | |
2707 | * Encode the reply stored in the stateowner reply cache | |
2708 | * | |
2709 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
2710 | * previously sent already encoded operation. | |
2711 | * | |
2712 | * called with nfs4_lock_state() held | |
2713 | */ | |
2714 | void | |
2715 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
2716 | { | |
2717 | ENCODE_HEAD; | |
2718 | struct nfs4_replay *rp = op->replay; | |
2719 | ||
2720 | BUG_ON(!rp); | |
2721 | ||
2722 | RESERVE_SPACE(8); | |
2723 | WRITE32(op->opnum); | |
2724 | *p++ = rp->rp_status; /* already xdr'ed */ | |
2725 | ADJUST_ARGS(); | |
2726 | ||
2727 | RESERVE_SPACE(rp->rp_buflen); | |
2728 | WRITEMEM(rp->rp_buf, rp->rp_buflen); | |
2729 | ADJUST_ARGS(); | |
2730 | } | |
2731 | ||
2732 | /* | |
2733 | * END OF "GENERIC" ENCODE ROUTINES. | |
2734 | */ | |
2735 | ||
2736 | int | |
2ebbc012 | 2737 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
2738 | { |
2739 | return xdr_ressize_check(rqstp, p); | |
2740 | } | |
2741 | ||
2742 | void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args) | |
2743 | { | |
2744 | if (args->ops != args->iops) { | |
2745 | kfree(args->ops); | |
2746 | args->ops = args->iops; | |
2747 | } | |
f99d49ad JJ |
2748 | kfree(args->tmpp); |
2749 | args->tmpp = NULL; | |
1da177e4 LT |
2750 | while (args->to_free) { |
2751 | struct tmpbuf *tb = args->to_free; | |
2752 | args->to_free = tb->next; | |
2753 | tb->release(tb->buf); | |
2754 | kfree(tb); | |
2755 | } | |
2756 | } | |
2757 | ||
2758 | int | |
2ebbc012 | 2759 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 2760 | { |
b37ad28b | 2761 | __be32 status; |
1da177e4 LT |
2762 | |
2763 | args->p = p; | |
2764 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
2765 | args->pagelist = rqstp->rq_arg.pages; | |
2766 | args->pagelen = rqstp->rq_arg.page_len; | |
2767 | args->tmpp = NULL; | |
2768 | args->to_free = NULL; | |
2769 | args->ops = args->iops; | |
2770 | args->rqstp = rqstp; | |
2771 | ||
2772 | status = nfsd4_decode_compound(args); | |
2773 | if (status) { | |
2774 | nfsd4_release_compoundargs(args); | |
2775 | } | |
2776 | return !status; | |
2777 | } | |
2778 | ||
2779 | int | |
2ebbc012 | 2780 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
2781 | { |
2782 | /* | |
2783 | * All that remains is to write the tag and operation count... | |
2784 | */ | |
2785 | struct kvec *iov; | |
2786 | p = resp->tagp; | |
2787 | *p++ = htonl(resp->taglen); | |
2788 | memcpy(p, resp->tag, resp->taglen); | |
2789 | p += XDR_QUADLEN(resp->taglen); | |
2790 | *p++ = htonl(resp->opcnt); | |
2791 | ||
2792 | if (rqstp->rq_res.page_len) | |
2793 | iov = &rqstp->rq_res.tail[0]; | |
2794 | else | |
2795 | iov = &rqstp->rq_res.head[0]; | |
2796 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; | |
2797 | BUG_ON(iov->iov_len > PAGE_SIZE); | |
2798 | return 1; | |
2799 | } | |
2800 | ||
2801 | /* | |
2802 | * Local variables: | |
2803 | * c-basic-offset: 8 | |
2804 | * End: | |
2805 | */ |