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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); | |
5bf8c691 BH |
682 | READ32(open->op_delegate_stateid.si_generation); |
683 | COPYMEM(&open->op_delegate_stateid.si_opaque, | |
684 | sizeof(stateid_opaque_t)); | |
1da177e4 LT |
685 | READ32(open->op_fname.len); |
686 | READ_BUF(open->op_fname.len); | |
687 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
688 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) | |
689 | return status; | |
690 | break; | |
691 | default: | |
692 | goto xdr_error; | |
693 | } | |
694 | ||
695 | DECODE_TAIL; | |
696 | } | |
697 | ||
b37ad28b | 698 | static __be32 |
1da177e4 LT |
699 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
700 | { | |
701 | DECODE_HEAD; | |
702 | ||
703 | open_conf->oc_stateowner = NULL; | |
704 | READ_BUF(4 + sizeof(stateid_t)); | |
705 | READ32(open_conf->oc_req_stateid.si_generation); | |
706 | COPYMEM(&open_conf->oc_req_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
707 | READ32(open_conf->oc_seqid); | |
708 | ||
709 | DECODE_TAIL; | |
710 | } | |
711 | ||
b37ad28b | 712 | static __be32 |
1da177e4 LT |
713 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
714 | { | |
715 | DECODE_HEAD; | |
716 | ||
717 | open_down->od_stateowner = NULL; | |
718 | READ_BUF(12 + sizeof(stateid_t)); | |
719 | READ32(open_down->od_stateid.si_generation); | |
720 | COPYMEM(&open_down->od_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
721 | READ32(open_down->od_seqid); | |
722 | READ32(open_down->od_share_access); | |
723 | READ32(open_down->od_share_deny); | |
724 | ||
725 | DECODE_TAIL; | |
726 | } | |
727 | ||
b37ad28b | 728 | static __be32 |
1da177e4 LT |
729 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
730 | { | |
731 | DECODE_HEAD; | |
732 | ||
733 | READ_BUF(4); | |
734 | READ32(putfh->pf_fhlen); | |
735 | if (putfh->pf_fhlen > NFS4_FHSIZE) | |
736 | goto xdr_error; | |
737 | READ_BUF(putfh->pf_fhlen); | |
738 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
739 | ||
740 | DECODE_TAIL; | |
741 | } | |
742 | ||
b37ad28b | 743 | static __be32 |
1da177e4 LT |
744 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
745 | { | |
746 | DECODE_HEAD; | |
747 | ||
748 | READ_BUF(sizeof(stateid_t) + 12); | |
749 | READ32(read->rd_stateid.si_generation); | |
750 | COPYMEM(&read->rd_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
751 | READ64(read->rd_offset); | |
752 | READ32(read->rd_length); | |
753 | ||
754 | DECODE_TAIL; | |
755 | } | |
756 | ||
b37ad28b | 757 | static __be32 |
1da177e4 LT |
758 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
759 | { | |
760 | DECODE_HEAD; | |
761 | ||
762 | READ_BUF(24); | |
763 | READ64(readdir->rd_cookie); | |
764 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); | |
765 | READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ | |
766 | READ32(readdir->rd_maxcount); | |
767 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) | |
768 | goto out; | |
769 | ||
770 | DECODE_TAIL; | |
771 | } | |
772 | ||
b37ad28b | 773 | static __be32 |
1da177e4 LT |
774 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
775 | { | |
776 | DECODE_HEAD; | |
777 | ||
778 | READ_BUF(4); | |
779 | READ32(remove->rm_namelen); | |
780 | READ_BUF(remove->rm_namelen); | |
781 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
782 | if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent))) | |
783 | return status; | |
784 | ||
785 | DECODE_TAIL; | |
786 | } | |
787 | ||
b37ad28b | 788 | static __be32 |
1da177e4 LT |
789 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
790 | { | |
791 | DECODE_HEAD; | |
792 | ||
793 | READ_BUF(4); | |
794 | READ32(rename->rn_snamelen); | |
795 | READ_BUF(rename->rn_snamelen + 4); | |
796 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); | |
797 | READ32(rename->rn_tnamelen); | |
798 | READ_BUF(rename->rn_tnamelen); | |
799 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
800 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent))) | |
801 | return status; | |
802 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval))) | |
803 | return status; | |
804 | ||
805 | DECODE_TAIL; | |
806 | } | |
807 | ||
b37ad28b | 808 | static __be32 |
1da177e4 LT |
809 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
810 | { | |
811 | DECODE_HEAD; | |
812 | ||
813 | READ_BUF(sizeof(clientid_t)); | |
814 | COPYMEM(clientid, sizeof(clientid_t)); | |
815 | ||
816 | DECODE_TAIL; | |
817 | } | |
818 | ||
dcb488a3 AA |
819 | static __be32 |
820 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
821 | struct nfsd4_secinfo *secinfo) | |
822 | { | |
823 | DECODE_HEAD; | |
824 | ||
825 | READ_BUF(4); | |
826 | READ32(secinfo->si_namelen); | |
827 | READ_BUF(secinfo->si_namelen); | |
828 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
829 | status = check_filename(secinfo->si_name, secinfo->si_namelen, | |
830 | nfserr_noent); | |
831 | if (status) | |
832 | return status; | |
833 | DECODE_TAIL; | |
834 | } | |
835 | ||
b37ad28b | 836 | static __be32 |
1da177e4 LT |
837 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
838 | { | |
839 | DECODE_HEAD; | |
840 | ||
841 | READ_BUF(sizeof(stateid_t)); | |
842 | READ32(setattr->sa_stateid.si_generation); | |
843 | COPYMEM(&setattr->sa_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
844 | if ((status = nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, &setattr->sa_acl))) | |
845 | goto out; | |
846 | ||
847 | DECODE_TAIL; | |
848 | } | |
849 | ||
b37ad28b | 850 | static __be32 |
1da177e4 LT |
851 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
852 | { | |
853 | DECODE_HEAD; | |
854 | ||
855 | READ_BUF(12); | |
856 | COPYMEM(setclientid->se_verf.data, 8); | |
857 | READ32(setclientid->se_namelen); | |
858 | ||
859 | READ_BUF(setclientid->se_namelen + 8); | |
860 | SAVEMEM(setclientid->se_name, setclientid->se_namelen); | |
861 | READ32(setclientid->se_callback_prog); | |
862 | READ32(setclientid->se_callback_netid_len); | |
863 | ||
864 | READ_BUF(setclientid->se_callback_netid_len + 4); | |
865 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); | |
866 | READ32(setclientid->se_callback_addr_len); | |
867 | ||
868 | READ_BUF(setclientid->se_callback_addr_len + 4); | |
869 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); | |
870 | READ32(setclientid->se_callback_ident); | |
871 | ||
872 | DECODE_TAIL; | |
873 | } | |
874 | ||
b37ad28b | 875 | static __be32 |
1da177e4 LT |
876 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
877 | { | |
878 | DECODE_HEAD; | |
879 | ||
880 | READ_BUF(8 + sizeof(nfs4_verifier)); | |
881 | COPYMEM(&scd_c->sc_clientid, 8); | |
882 | COPYMEM(&scd_c->sc_confirm, sizeof(nfs4_verifier)); | |
883 | ||
884 | DECODE_TAIL; | |
885 | } | |
886 | ||
887 | /* Also used for NVERIFY */ | |
b37ad28b | 888 | static __be32 |
1da177e4 LT |
889 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
890 | { | |
891 | #if 0 | |
892 | struct nfsd4_compoundargs save = { | |
893 | .p = argp->p, | |
894 | .end = argp->end, | |
895 | .rqstp = argp->rqstp, | |
896 | }; | |
897 | u32 ve_bmval[2]; | |
898 | struct iattr ve_iattr; /* request */ | |
899 | struct nfs4_acl *ve_acl; /* request */ | |
900 | #endif | |
901 | DECODE_HEAD; | |
902 | ||
903 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
904 | goto out; | |
905 | ||
906 | /* For convenience's sake, we compare raw xdr'd attributes in | |
907 | * nfsd4_proc_verify; however we still decode here just to return | |
908 | * correct error in case of bad xdr. */ | |
909 | #if 0 | |
910 | status = nfsd4_decode_fattr(ve_bmval, &ve_iattr, &ve_acl); | |
911 | if (status == nfserr_inval) { | |
912 | status = nfserrno(status); | |
913 | goto out; | |
914 | } | |
915 | #endif | |
916 | READ_BUF(4); | |
917 | READ32(verify->ve_attrlen); | |
918 | READ_BUF(verify->ve_attrlen); | |
919 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
920 | ||
921 | DECODE_TAIL; | |
922 | } | |
923 | ||
b37ad28b | 924 | static __be32 |
1da177e4 LT |
925 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
926 | { | |
927 | int avail; | |
928 | int v; | |
929 | int len; | |
930 | DECODE_HEAD; | |
931 | ||
932 | READ_BUF(sizeof(stateid_opaque_t) + 20); | |
933 | READ32(write->wr_stateid.si_generation); | |
934 | COPYMEM(&write->wr_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
935 | READ64(write->wr_offset); | |
936 | READ32(write->wr_stable_how); | |
937 | if (write->wr_stable_how > 2) | |
938 | goto xdr_error; | |
939 | READ32(write->wr_buflen); | |
940 | ||
941 | /* Sorry .. no magic macros for this.. * | |
942 | * READ_BUF(write->wr_buflen); | |
943 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
944 | */ | |
945 | avail = (char*)argp->end - (char*)argp->p; | |
946 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
947 | dprintk("NFSD: xdr error (%s:%d)\n", |
948 | __FILE__, __LINE__); | |
1da177e4 LT |
949 | goto xdr_error; |
950 | } | |
3cc03b16 N |
951 | argp->rqstp->rq_vec[0].iov_base = p; |
952 | argp->rqstp->rq_vec[0].iov_len = avail; | |
1da177e4 LT |
953 | v = 0; |
954 | len = write->wr_buflen; | |
3cc03b16 N |
955 | while (len > argp->rqstp->rq_vec[v].iov_len) { |
956 | len -= argp->rqstp->rq_vec[v].iov_len; | |
1da177e4 | 957 | v++; |
3cc03b16 | 958 | argp->rqstp->rq_vec[v].iov_base = page_address(argp->pagelist[0]); |
1da177e4 LT |
959 | argp->pagelist++; |
960 | if (argp->pagelen >= PAGE_SIZE) { | |
3cc03b16 | 961 | argp->rqstp->rq_vec[v].iov_len = PAGE_SIZE; |
1da177e4 LT |
962 | argp->pagelen -= PAGE_SIZE; |
963 | } else { | |
3cc03b16 | 964 | argp->rqstp->rq_vec[v].iov_len = argp->pagelen; |
1da177e4 LT |
965 | argp->pagelen -= len; |
966 | } | |
967 | } | |
2ebbc012 AV |
968 | argp->end = (__be32*) (argp->rqstp->rq_vec[v].iov_base + argp->rqstp->rq_vec[v].iov_len); |
969 | argp->p = (__be32*) (argp->rqstp->rq_vec[v].iov_base + (XDR_QUADLEN(len) << 2)); | |
3cc03b16 | 970 | argp->rqstp->rq_vec[v].iov_len = len; |
1da177e4 LT |
971 | write->wr_vlen = v+1; |
972 | ||
973 | DECODE_TAIL; | |
974 | } | |
975 | ||
b37ad28b | 976 | static __be32 |
1da177e4 LT |
977 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
978 | { | |
979 | DECODE_HEAD; | |
980 | ||
981 | READ_BUF(12); | |
982 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
983 | READ32(rlockowner->rl_owner.len); | |
984 | READ_BUF(rlockowner->rl_owner.len); | |
985 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
986 | ||
987 | DECODE_TAIL; | |
988 | } | |
989 | ||
347e0ad9 BH |
990 | static __be32 |
991 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
992 | { | |
993 | return nfs_ok; | |
994 | } | |
995 | ||
3c375c6f BH |
996 | static __be32 |
997 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
998 | { | |
999 | return nfserr_opnotsupp; | |
1000 | } | |
1001 | ||
347e0ad9 BH |
1002 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1003 | ||
1004 | static nfsd4_dec nfsd4_dec_ops[] = { | |
ad1060c8 BF |
1005 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1006 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1007 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1008 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1009 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1010 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1011 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1012 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1013 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1014 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1015 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1016 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1017 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1018 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1019 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1020 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1021 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1022 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1023 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1024 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
1025 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1026 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1027 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1028 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1029 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1030 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1031 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1032 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1033 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1034 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1035 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1036 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1037 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1038 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1039 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1040 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1041 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
347e0ad9 BH |
1042 | }; |
1043 | ||
f2feb96b BH |
1044 | struct nfsd4_minorversion_ops { |
1045 | nfsd4_dec *decoders; | |
1046 | int nops; | |
1047 | }; | |
1048 | ||
1049 | static struct nfsd4_minorversion_ops nfsd4_minorversion[] = { | |
ad1060c8 | 1050 | [0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) }, |
f2feb96b BH |
1051 | }; |
1052 | ||
b37ad28b | 1053 | static __be32 |
1da177e4 LT |
1054 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1055 | { | |
1056 | DECODE_HEAD; | |
1057 | struct nfsd4_op *op; | |
f2feb96b | 1058 | struct nfsd4_minorversion_ops *ops; |
1da177e4 LT |
1059 | int i; |
1060 | ||
1061 | /* | |
1062 | * XXX: According to spec, we should check the tag | |
1063 | * for UTF-8 compliance. I'm postponing this for | |
1064 | * now because it seems that some clients do use | |
1065 | * binary tags. | |
1066 | */ | |
1067 | READ_BUF(4); | |
1068 | READ32(argp->taglen); | |
1069 | READ_BUF(argp->taglen + 8); | |
1070 | SAVEMEM(argp->tag, argp->taglen); | |
1071 | READ32(argp->minorversion); | |
1072 | READ32(argp->opcnt); | |
1073 | ||
1074 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1075 | goto xdr_error; | |
1076 | if (argp->opcnt > 100) | |
1077 | goto xdr_error; | |
1078 | ||
e8c96f8c | 1079 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
1da177e4 LT |
1080 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1081 | if (!argp->ops) { | |
1082 | argp->ops = argp->iops; | |
817cb9d4 | 1083 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1084 | goto xdr_error; |
1085 | } | |
1086 | } | |
1087 | ||
f2feb96b | 1088 | if (argp->minorversion >= ARRAY_SIZE(nfsd4_minorversion)) |
30cff1ff BH |
1089 | argp->opcnt = 0; |
1090 | ||
f2feb96b | 1091 | ops = &nfsd4_minorversion[argp->minorversion]; |
1da177e4 LT |
1092 | for (i = 0; i < argp->opcnt; i++) { |
1093 | op = &argp->ops[i]; | |
1094 | op->replay = NULL; | |
1095 | ||
1096 | /* | |
1097 | * We can't use READ_BUF() here because we need to handle | |
1098 | * a missing opcode as an OP_WRITE + 1. So we need to check | |
1099 | * to see if we're truly at the end of our buffer or if there | |
1100 | * is another page we need to flip to. | |
1101 | */ | |
1102 | ||
1103 | if (argp->p == argp->end) { | |
1104 | if (argp->pagelen < 4) { | |
1105 | /* There isn't an opcode still on the wire */ | |
1106 | op->opnum = OP_WRITE + 1; | |
1107 | op->status = nfserr_bad_xdr; | |
1108 | argp->opcnt = i+1; | |
1109 | break; | |
1110 | } | |
1111 | ||
1112 | /* | |
1113 | * False alarm. We just hit a page boundary, but there | |
1114 | * is still data available. Move pointer across page | |
1115 | * boundary. *snip from READ_BUF* | |
1116 | */ | |
1117 | argp->p = page_address(argp->pagelist[0]); | |
1118 | argp->pagelist++; | |
1119 | if (argp->pagelen < PAGE_SIZE) { | |
1120 | argp->end = p + (argp->pagelen>>2); | |
1121 | argp->pagelen = 0; | |
1122 | } else { | |
1123 | argp->end = p + (PAGE_SIZE>>2); | |
1124 | argp->pagelen -= PAGE_SIZE; | |
1125 | } | |
1126 | } | |
1127 | op->opnum = ntohl(*argp->p++); | |
1128 | ||
f2feb96b BH |
1129 | if (op->opnum >= OP_ACCESS && op->opnum < ops->nops) |
1130 | op->status = ops->decoders[op->opnum](argp, &op->u); | |
347e0ad9 | 1131 | else { |
1da177e4 LT |
1132 | op->opnum = OP_ILLEGAL; |
1133 | op->status = nfserr_op_illegal; | |
1da177e4 LT |
1134 | } |
1135 | ||
1136 | if (op->status) { | |
1137 | argp->opcnt = i+1; | |
1138 | break; | |
1139 | } | |
1140 | } | |
1141 | ||
1142 | DECODE_TAIL; | |
1143 | } | |
1144 | /* | |
1145 | * END OF "GENERIC" DECODE ROUTINES. | |
1146 | */ | |
1147 | ||
1148 | /* | |
1149 | * START OF "GENERIC" ENCODE ROUTINES. | |
1150 | * These may look a little ugly since they are imported from a "generic" | |
1151 | * set of XDR encode/decode routines which are intended to be shared by | |
1152 | * all of our NFSv4 implementations (OpenBSD, MacOS X...). | |
1153 | * | |
1154 | * If the pain of reading these is too great, it should be a straightforward | |
1155 | * task to translate them into Linux-specific versions which are more | |
1156 | * consistent with the style used in NFSv2/v3... | |
1157 | */ | |
2ebbc012 | 1158 | #define ENCODE_HEAD __be32 *p |
1da177e4 LT |
1159 | |
1160 | #define WRITE32(n) *p++ = htonl(n) | |
1161 | #define WRITE64(n) do { \ | |
1162 | *p++ = htonl((u32)((n) >> 32)); \ | |
1163 | *p++ = htonl((u32)(n)); \ | |
1164 | } while (0) | |
5108b276 | 1165 | #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \ |
1da177e4 LT |
1166 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ |
1167 | memcpy(p, ptr, nbytes); \ | |
1168 | p += XDR_QUADLEN(nbytes); \ | |
5108b276 | 1169 | }} while (0) |
1da177e4 LT |
1170 | #define WRITECINFO(c) do { \ |
1171 | *p++ = htonl(c.atomic); \ | |
1172 | *p++ = htonl(c.before_ctime_sec); \ | |
1173 | *p++ = htonl(c.before_ctime_nsec); \ | |
1174 | *p++ = htonl(c.after_ctime_sec); \ | |
1175 | *p++ = htonl(c.after_ctime_nsec); \ | |
1176 | } while (0) | |
1177 | ||
1178 | #define RESERVE_SPACE(nbytes) do { \ | |
1179 | p = resp->p; \ | |
1180 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ | |
1181 | } while (0) | |
1182 | #define ADJUST_ARGS() resp->p = p | |
1183 | ||
1184 | /* | |
1185 | * Header routine to setup seqid operation replay cache | |
1186 | */ | |
1187 | #define ENCODE_SEQID_OP_HEAD \ | |
2ebbc012 | 1188 | __be32 *save; \ |
1da177e4 LT |
1189 | \ |
1190 | save = resp->p; | |
1191 | ||
1192 | /* | |
7fb64cee N |
1193 | * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This |
1194 | * is where sequence id's are incremented, and the replay cache is filled. | |
1195 | * Note that we increment sequence id's here, at the last moment, so we're sure | |
1196 | * we know whether the error to be returned is a sequence id mutating error. | |
1da177e4 LT |
1197 | */ |
1198 | ||
1199 | #define ENCODE_SEQID_OP_TAIL(stateowner) do { \ | |
1200 | if (seqid_mutating_err(nfserr) && stateowner) { \ | |
bd9aac52 | 1201 | stateowner->so_seqid++; \ |
1da177e4 LT |
1202 | stateowner->so_replay.rp_status = nfserr; \ |
1203 | stateowner->so_replay.rp_buflen = \ | |
1204 | (((char *)(resp)->p - (char *)save)); \ | |
1205 | memcpy(stateowner->so_replay.rp_buf, save, \ | |
1206 | stateowner->so_replay.rp_buflen); \ | |
1207 | } } while (0); | |
1208 | ||
81c3f413 BF |
1209 | /* Encode as an array of strings the string given with components |
1210 | * seperated @sep. | |
1211 | */ | |
b37ad28b | 1212 | static __be32 nfsd4_encode_components(char sep, char *components, |
2ebbc012 | 1213 | __be32 **pp, int *buflen) |
81c3f413 | 1214 | { |
2ebbc012 AV |
1215 | __be32 *p = *pp; |
1216 | __be32 *countp = p; | |
81c3f413 BF |
1217 | int strlen, count=0; |
1218 | char *str, *end; | |
1219 | ||
1220 | dprintk("nfsd4_encode_components(%s)\n", components); | |
1221 | if ((*buflen -= 4) < 0) | |
1222 | return nfserr_resource; | |
1223 | WRITE32(0); /* We will fill this in with @count later */ | |
1224 | end = str = components; | |
1225 | while (*end) { | |
1226 | for (; *end && (*end != sep); end++) | |
1227 | ; /* Point to end of component */ | |
1228 | strlen = end - str; | |
1229 | if (strlen) { | |
1230 | if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0) | |
1231 | return nfserr_resource; | |
1232 | WRITE32(strlen); | |
1233 | WRITEMEM(str, strlen); | |
1234 | count++; | |
1235 | } | |
1236 | else | |
1237 | end++; | |
1238 | str = end; | |
1239 | } | |
1240 | *pp = p; | |
1241 | p = countp; | |
1242 | WRITE32(count); | |
1243 | return 0; | |
1244 | } | |
1245 | ||
1246 | /* | |
1247 | * encode a location element of a fs_locations structure | |
1248 | */ | |
b37ad28b | 1249 | static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location, |
2ebbc012 | 1250 | __be32 **pp, int *buflen) |
81c3f413 | 1251 | { |
b37ad28b | 1252 | __be32 status; |
2ebbc012 | 1253 | __be32 *p = *pp; |
81c3f413 BF |
1254 | |
1255 | status = nfsd4_encode_components(':', location->hosts, &p, buflen); | |
1256 | if (status) | |
1257 | return status; | |
1258 | status = nfsd4_encode_components('/', location->path, &p, buflen); | |
1259 | if (status) | |
1260 | return status; | |
1261 | *pp = p; | |
1262 | return 0; | |
1263 | } | |
1264 | ||
1265 | /* | |
1266 | * Return the path to an export point in the pseudo filesystem namespace | |
1267 | * Returned string is safe to use as long as the caller holds a reference | |
1268 | * to @exp. | |
1269 | */ | |
b37ad28b | 1270 | static char *nfsd4_path(struct svc_rqst *rqstp, struct svc_export *exp, __be32 *stat) |
81c3f413 BF |
1271 | { |
1272 | struct svc_fh tmp_fh; | |
1273 | char *path, *rootpath; | |
81c3f413 BF |
1274 | |
1275 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
df547efb | 1276 | *stat = exp_pseudoroot(rqstp, &tmp_fh); |
cc45f017 AV |
1277 | if (*stat) |
1278 | return NULL; | |
54775491 | 1279 | rootpath = tmp_fh.fh_export->ex_pathname; |
81c3f413 | 1280 | |
54775491 | 1281 | path = exp->ex_pathname; |
81c3f413 BF |
1282 | |
1283 | if (strncmp(path, rootpath, strlen(rootpath))) { | |
817cb9d4 | 1284 | dprintk("nfsd: fs_locations failed;" |
81c3f413 | 1285 | "%s is not contained in %s\n", path, rootpath); |
cc45f017 AV |
1286 | *stat = nfserr_notsupp; |
1287 | return NULL; | |
81c3f413 BF |
1288 | } |
1289 | ||
1290 | return path + strlen(rootpath); | |
1291 | } | |
1292 | ||
1293 | /* | |
1294 | * encode a fs_locations structure | |
1295 | */ | |
b37ad28b | 1296 | static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp, |
81c3f413 | 1297 | struct svc_export *exp, |
2ebbc012 | 1298 | __be32 **pp, int *buflen) |
81c3f413 | 1299 | { |
b37ad28b | 1300 | __be32 status; |
cc45f017 | 1301 | int i; |
2ebbc012 | 1302 | __be32 *p = *pp; |
81c3f413 | 1303 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
cc45f017 | 1304 | char *root = nfsd4_path(rqstp, exp, &status); |
81c3f413 | 1305 | |
cc45f017 AV |
1306 | if (status) |
1307 | return status; | |
81c3f413 BF |
1308 | status = nfsd4_encode_components('/', root, &p, buflen); |
1309 | if (status) | |
1310 | return status; | |
1311 | if ((*buflen -= 4) < 0) | |
1312 | return nfserr_resource; | |
1313 | WRITE32(fslocs->locations_count); | |
1314 | for (i=0; i<fslocs->locations_count; i++) { | |
1315 | status = nfsd4_encode_fs_location4(&fslocs->locations[i], | |
1316 | &p, buflen); | |
1317 | if (status) | |
1318 | return status; | |
1319 | } | |
1320 | *pp = p; | |
1321 | return 0; | |
1322 | } | |
1da177e4 LT |
1323 | |
1324 | static u32 nfs4_ftypes[16] = { | |
1325 | NF4BAD, NF4FIFO, NF4CHR, NF4BAD, | |
1326 | NF4DIR, NF4BAD, NF4BLK, NF4BAD, | |
1327 | NF4REG, NF4BAD, NF4LNK, NF4BAD, | |
1328 | NF4SOCK, NF4BAD, NF4LNK, NF4BAD, | |
1329 | }; | |
1330 | ||
b37ad28b | 1331 | static __be32 |
1da177e4 | 1332 | nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
2ebbc012 | 1333 | __be32 **p, int *buflen) |
1da177e4 LT |
1334 | { |
1335 | int status; | |
1336 | ||
1337 | if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) | |
1338 | return nfserr_resource; | |
1339 | if (whotype != NFS4_ACL_WHO_NAMED) | |
1340 | status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); | |
1341 | else if (group) | |
1342 | status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1343 | else | |
1344 | status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1345 | if (status < 0) | |
1346 | return nfserrno(status); | |
1347 | *p = xdr_encode_opaque(*p, NULL, status); | |
1348 | *buflen -= (XDR_QUADLEN(status) << 2) + 4; | |
1349 | BUG_ON(*buflen < 0); | |
1350 | return 0; | |
1351 | } | |
1352 | ||
b37ad28b | 1353 | static inline __be32 |
2ebbc012 | 1354 | nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, __be32 **p, int *buflen) |
1da177e4 LT |
1355 | { |
1356 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen); | |
1357 | } | |
1358 | ||
b37ad28b | 1359 | static inline __be32 |
2ebbc012 | 1360 | nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, __be32 **p, int *buflen) |
1da177e4 LT |
1361 | { |
1362 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen); | |
1363 | } | |
1364 | ||
b37ad28b | 1365 | static inline __be32 |
1da177e4 | 1366 | nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
2ebbc012 | 1367 | __be32 **p, int *buflen) |
1da177e4 LT |
1368 | { |
1369 | return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen); | |
1370 | } | |
1371 | ||
42ca0993 BF |
1372 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
1373 | FATTR4_WORD0_RDATTR_ERROR) | |
1374 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
1375 | ||
b37ad28b | 1376 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
42ca0993 BF |
1377 | { |
1378 | /* As per referral draft: */ | |
1379 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
1380 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
1381 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
1382 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
1383 | *rdattr_err = NFSERR_MOVED; | |
1384 | else | |
1385 | return nfserr_moved; | |
1386 | } | |
1387 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
1388 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
1389 | return 0; | |
1390 | } | |
1da177e4 LT |
1391 | |
1392 | /* | |
1393 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
1394 | * ourselves. | |
1395 | * | |
1396 | * @countp is the buffer size in _words_; upon successful return this becomes | |
1397 | * replaced with the number of words written. | |
1398 | */ | |
b37ad28b | 1399 | __be32 |
1da177e4 | 1400 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, |
2ebbc012 | 1401 | struct dentry *dentry, __be32 *buffer, int *countp, u32 *bmval, |
406a7ea9 | 1402 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
1403 | { |
1404 | u32 bmval0 = bmval[0]; | |
1405 | u32 bmval1 = bmval[1]; | |
1406 | struct kstat stat; | |
1407 | struct svc_fh tempfh; | |
1408 | struct kstatfs statfs; | |
1409 | int buflen = *countp << 2; | |
2ebbc012 | 1410 | __be32 *attrlenp; |
1da177e4 LT |
1411 | u32 dummy; |
1412 | u64 dummy64; | |
42ca0993 | 1413 | u32 rdattr_err = 0; |
2ebbc012 | 1414 | __be32 *p = buffer; |
b37ad28b | 1415 | __be32 status; |
b8dd7b9a | 1416 | int err; |
1da177e4 LT |
1417 | int aclsupport = 0; |
1418 | struct nfs4_acl *acl = NULL; | |
1419 | ||
1420 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
1421 | BUG_ON(bmval0 & ~NFSD_SUPPORTED_ATTRS_WORD0); | |
1422 | BUG_ON(bmval1 & ~NFSD_SUPPORTED_ATTRS_WORD1); | |
1423 | ||
42ca0993 BF |
1424 | if (exp->ex_fslocs.migrated) { |
1425 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); | |
1426 | if (status) | |
1427 | goto out; | |
1428 | } | |
1429 | ||
54775491 | 1430 | err = vfs_getattr(exp->ex_path.mnt, dentry, &stat); |
b8dd7b9a | 1431 | if (err) |
1da177e4 | 1432 | goto out_nfserr; |
a16e92ed BF |
1433 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | |
1434 | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
1435 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
1436 | FATTR4_WORD1_SPACE_TOTAL))) { | |
b8dd7b9a AV |
1437 | err = vfs_statfs(dentry, &statfs); |
1438 | if (err) | |
1da177e4 LT |
1439 | goto out_nfserr; |
1440 | } | |
1441 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
1442 | fh_init(&tempfh, NFS4_FHSIZE); | |
1443 | status = fh_compose(&tempfh, exp, dentry, NULL); | |
1444 | if (status) | |
1445 | goto out; | |
1446 | fhp = &tempfh; | |
1447 | } | |
1448 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
1449 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
b8dd7b9a AV |
1450 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
1451 | aclsupport = (err == 0); | |
1da177e4 | 1452 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 1453 | if (err == -EOPNOTSUPP) |
1da177e4 | 1454 | bmval0 &= ~FATTR4_WORD0_ACL; |
b8dd7b9a | 1455 | else if (err == -EINVAL) { |
1da177e4 LT |
1456 | status = nfserr_attrnotsupp; |
1457 | goto out; | |
b8dd7b9a | 1458 | } else if (err != 0) |
1da177e4 LT |
1459 | goto out_nfserr; |
1460 | } | |
1461 | } | |
81c3f413 BF |
1462 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
1463 | if (exp->ex_fslocs.locations == NULL) { | |
1464 | bmval0 &= ~FATTR4_WORD0_FS_LOCATIONS; | |
1465 | } | |
1466 | } | |
1da177e4 LT |
1467 | if ((buflen -= 16) < 0) |
1468 | goto out_resource; | |
1469 | ||
1470 | WRITE32(2); | |
1471 | WRITE32(bmval0); | |
1472 | WRITE32(bmval1); | |
1473 | attrlenp = p++; /* to be backfilled later */ | |
1474 | ||
1475 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
42ca0993 | 1476 | u32 word0 = NFSD_SUPPORTED_ATTRS_WORD0; |
1da177e4 LT |
1477 | if ((buflen -= 12) < 0) |
1478 | goto out_resource; | |
42ca0993 BF |
1479 | if (!aclsupport) |
1480 | word0 &= ~FATTR4_WORD0_ACL; | |
1481 | if (!exp->ex_fslocs.locations) | |
1482 | word0 &= ~FATTR4_WORD0_FS_LOCATIONS; | |
1da177e4 | 1483 | WRITE32(2); |
42ca0993 | 1484 | WRITE32(word0); |
1da177e4 LT |
1485 | WRITE32(NFSD_SUPPORTED_ATTRS_WORD1); |
1486 | } | |
1487 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
1488 | if ((buflen -= 4) < 0) | |
1489 | goto out_resource; | |
1490 | dummy = nfs4_ftypes[(stat.mode & S_IFMT) >> 12]; | |
1491 | if (dummy == NF4BAD) | |
1492 | goto out_serverfault; | |
1493 | WRITE32(dummy); | |
1494 | } | |
1495 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
1496 | if ((buflen -= 4) < 0) | |
1497 | goto out_resource; | |
49640001 | 1498 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
e34ac862 | 1499 | WRITE32(NFS4_FH_PERSISTENT); |
49640001 | 1500 | else |
e34ac862 | 1501 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
1da177e4 LT |
1502 | } |
1503 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
1504 | /* | |
1505 | * Note: This _must_ be consistent with the scheme for writing | |
1506 | * change_info, so any changes made here must be reflected there | |
1507 | * as well. (See xdr4.h:set_change_info() and the WRITECINFO() | |
1508 | * macro above.) | |
1509 | */ | |
1510 | if ((buflen -= 8) < 0) | |
1511 | goto out_resource; | |
1512 | WRITE32(stat.ctime.tv_sec); | |
1513 | WRITE32(stat.ctime.tv_nsec); | |
1514 | } | |
1515 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
1516 | if ((buflen -= 8) < 0) | |
1517 | goto out_resource; | |
1518 | WRITE64(stat.size); | |
1519 | } | |
1520 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
1521 | if ((buflen -= 4) < 0) | |
1522 | goto out_resource; | |
1523 | WRITE32(1); | |
1524 | } | |
1525 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
1526 | if ((buflen -= 4) < 0) | |
1527 | goto out_resource; | |
1528 | WRITE32(1); | |
1529 | } | |
1530 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
1531 | if ((buflen -= 4) < 0) | |
1532 | goto out_resource; | |
1533 | WRITE32(0); | |
1534 | } | |
1535 | if (bmval0 & FATTR4_WORD0_FSID) { | |
1536 | if ((buflen -= 16) < 0) | |
1537 | goto out_resource; | |
42ca0993 BF |
1538 | if (exp->ex_fslocs.migrated) { |
1539 | WRITE64(NFS4_REFERRAL_FSID_MAJOR); | |
1540 | WRITE64(NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
1541 | } else switch(fsid_source(fhp)) { |
1542 | case FSIDSOURCE_FSID: | |
1da177e4 LT |
1543 | WRITE64((u64)exp->ex_fsid); |
1544 | WRITE64((u64)0); | |
af6a4e28 N |
1545 | break; |
1546 | case FSIDSOURCE_DEV: | |
1da177e4 LT |
1547 | WRITE32(0); |
1548 | WRITE32(MAJOR(stat.dev)); | |
1549 | WRITE32(0); | |
1550 | WRITE32(MINOR(stat.dev)); | |
af6a4e28 N |
1551 | break; |
1552 | case FSIDSOURCE_UUID: | |
1553 | WRITEMEM(exp->ex_uuid, 16); | |
1554 | break; | |
1da177e4 LT |
1555 | } |
1556 | } | |
1557 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
1558 | if ((buflen -= 4) < 0) | |
1559 | goto out_resource; | |
1560 | WRITE32(0); | |
1561 | } | |
1562 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
1563 | if ((buflen -= 4) < 0) | |
1564 | goto out_resource; | |
1565 | WRITE32(NFSD_LEASE_TIME); | |
1566 | } | |
1567 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
1568 | if ((buflen -= 4) < 0) | |
1569 | goto out_resource; | |
42ca0993 | 1570 | WRITE32(rdattr_err); |
1da177e4 LT |
1571 | } |
1572 | if (bmval0 & FATTR4_WORD0_ACL) { | |
1573 | struct nfs4_ace *ace; | |
1da177e4 LT |
1574 | |
1575 | if (acl == NULL) { | |
1576 | if ((buflen -= 4) < 0) | |
1577 | goto out_resource; | |
1578 | ||
1579 | WRITE32(0); | |
1580 | goto out_acl; | |
1581 | } | |
1582 | if ((buflen -= 4) < 0) | |
1583 | goto out_resource; | |
1584 | WRITE32(acl->naces); | |
1585 | ||
28e05dd8 | 1586 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
1da177e4 LT |
1587 | if ((buflen -= 4*3) < 0) |
1588 | goto out_resource; | |
1589 | WRITE32(ace->type); | |
1590 | WRITE32(ace->flag); | |
1591 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); | |
1592 | status = nfsd4_encode_aclname(rqstp, ace->whotype, | |
1593 | ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP, | |
1594 | &p, &buflen); | |
1595 | if (status == nfserr_resource) | |
1596 | goto out_resource; | |
1597 | if (status) | |
1598 | goto out; | |
1599 | } | |
1600 | } | |
1601 | out_acl: | |
1602 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
1603 | if ((buflen -= 4) < 0) | |
1604 | goto out_resource; | |
1605 | WRITE32(aclsupport ? | |
1606 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); | |
1607 | } | |
1608 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
1609 | if ((buflen -= 4) < 0) | |
1610 | goto out_resource; | |
1611 | WRITE32(1); | |
1612 | } | |
1613 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
1614 | if ((buflen -= 4) < 0) | |
1615 | goto out_resource; | |
1616 | WRITE32(1); | |
1617 | } | |
1618 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
1619 | if ((buflen -= 4) < 0) | |
1620 | goto out_resource; | |
1621 | WRITE32(1); | |
1622 | } | |
1623 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
1624 | if ((buflen -= 4) < 0) | |
1625 | goto out_resource; | |
1626 | WRITE32(1); | |
1627 | } | |
1628 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
1629 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; | |
1630 | if (buflen < 0) | |
1631 | goto out_resource; | |
1632 | WRITE32(fhp->fh_handle.fh_size); | |
1633 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); | |
1634 | } | |
1635 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
1636 | if ((buflen -= 8) < 0) | |
1637 | goto out_resource; | |
40ee5dc6 | 1638 | WRITE64(stat.ino); |
1da177e4 LT |
1639 | } |
1640 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
1641 | if ((buflen -= 8) < 0) | |
1642 | goto out_resource; | |
1643 | WRITE64((u64) statfs.f_ffree); | |
1644 | } | |
1645 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
1646 | if ((buflen -= 8) < 0) | |
1647 | goto out_resource; | |
1648 | WRITE64((u64) statfs.f_ffree); | |
1649 | } | |
1650 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
1651 | if ((buflen -= 8) < 0) | |
1652 | goto out_resource; | |
1653 | WRITE64((u64) statfs.f_files); | |
1654 | } | |
81c3f413 BF |
1655 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
1656 | status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); | |
1657 | if (status == nfserr_resource) | |
1658 | goto out_resource; | |
1659 | if (status) | |
1660 | goto out; | |
1661 | } | |
1da177e4 LT |
1662 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
1663 | if ((buflen -= 4) < 0) | |
1664 | goto out_resource; | |
1665 | WRITE32(1); | |
1666 | } | |
1667 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
1668 | if ((buflen -= 8) < 0) | |
1669 | goto out_resource; | |
1670 | WRITE64(~(u64)0); | |
1671 | } | |
1672 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
1673 | if ((buflen -= 4) < 0) | |
1674 | goto out_resource; | |
1675 | WRITE32(255); | |
1676 | } | |
1677 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
1678 | if ((buflen -= 4) < 0) | |
1679 | goto out_resource; | |
a16e92ed | 1680 | WRITE32(statfs.f_namelen); |
1da177e4 LT |
1681 | } |
1682 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
1683 | if ((buflen -= 8) < 0) | |
1684 | goto out_resource; | |
7adae489 | 1685 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
1686 | } |
1687 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
1688 | if ((buflen -= 8) < 0) | |
1689 | goto out_resource; | |
7adae489 | 1690 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
1691 | } |
1692 | if (bmval1 & FATTR4_WORD1_MODE) { | |
1693 | if ((buflen -= 4) < 0) | |
1694 | goto out_resource; | |
1695 | WRITE32(stat.mode & S_IALLUGO); | |
1696 | } | |
1697 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
1698 | if ((buflen -= 4) < 0) | |
1699 | goto out_resource; | |
1700 | WRITE32(1); | |
1701 | } | |
1702 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
1703 | if ((buflen -= 4) < 0) | |
1704 | goto out_resource; | |
1705 | WRITE32(stat.nlink); | |
1706 | } | |
1707 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
1708 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); | |
1709 | if (status == nfserr_resource) | |
1710 | goto out_resource; | |
1711 | if (status) | |
1712 | goto out; | |
1713 | } | |
1714 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
1715 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); | |
1716 | if (status == nfserr_resource) | |
1717 | goto out_resource; | |
1718 | if (status) | |
1719 | goto out; | |
1720 | } | |
1721 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
1722 | if ((buflen -= 8) < 0) | |
1723 | goto out_resource; | |
1724 | WRITE32((u32) MAJOR(stat.rdev)); | |
1725 | WRITE32((u32) MINOR(stat.rdev)); | |
1726 | } | |
1727 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
1728 | if ((buflen -= 8) < 0) | |
1729 | goto out_resource; | |
1730 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
1731 | WRITE64(dummy64); | |
1732 | } | |
1733 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
1734 | if ((buflen -= 8) < 0) | |
1735 | goto out_resource; | |
1736 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
1737 | WRITE64(dummy64); | |
1738 | } | |
1739 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
1740 | if ((buflen -= 8) < 0) | |
1741 | goto out_resource; | |
1742 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
1743 | WRITE64(dummy64); | |
1744 | } | |
1745 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
1746 | if ((buflen -= 8) < 0) | |
1747 | goto out_resource; | |
1748 | dummy64 = (u64)stat.blocks << 9; | |
1749 | WRITE64(dummy64); | |
1750 | } | |
1751 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
1752 | if ((buflen -= 12) < 0) | |
1753 | goto out_resource; | |
1754 | WRITE32(0); | |
1755 | WRITE32(stat.atime.tv_sec); | |
1756 | WRITE32(stat.atime.tv_nsec); | |
1757 | } | |
1758 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
1759 | if ((buflen -= 12) < 0) | |
1760 | goto out_resource; | |
1761 | WRITE32(0); | |
1762 | WRITE32(1); | |
1763 | WRITE32(0); | |
1764 | } | |
1765 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
1766 | if ((buflen -= 12) < 0) | |
1767 | goto out_resource; | |
1768 | WRITE32(0); | |
1769 | WRITE32(stat.ctime.tv_sec); | |
1770 | WRITE32(stat.ctime.tv_nsec); | |
1771 | } | |
1772 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
1773 | if ((buflen -= 12) < 0) | |
1774 | goto out_resource; | |
1775 | WRITE32(0); | |
1776 | WRITE32(stat.mtime.tv_sec); | |
1777 | WRITE32(stat.mtime.tv_nsec); | |
1778 | } | |
1779 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
1da177e4 LT |
1780 | if ((buflen -= 8) < 0) |
1781 | goto out_resource; | |
406a7ea9 FF |
1782 | /* |
1783 | * Get parent's attributes if not ignoring crossmount | |
1784 | * and this is the root of a cross-mounted filesystem. | |
1785 | */ | |
1786 | if (ignore_crossmnt == 0 && | |
54775491 JB |
1787 | exp->ex_path.mnt->mnt_root->d_inode == dentry->d_inode) { |
1788 | err = vfs_getattr(exp->ex_path.mnt->mnt_parent, | |
1789 | exp->ex_path.mnt->mnt_mountpoint, &stat); | |
40ee5dc6 PS |
1790 | if (err) |
1791 | goto out_nfserr; | |
1792 | } | |
1793 | WRITE64(stat.ino); | |
1da177e4 LT |
1794 | } |
1795 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
1796 | *countp = p - buffer; | |
1797 | status = nfs_ok; | |
1798 | ||
1799 | out: | |
28e05dd8 | 1800 | kfree(acl); |
1da177e4 LT |
1801 | if (fhp == &tempfh) |
1802 | fh_put(&tempfh); | |
1803 | return status; | |
1804 | out_nfserr: | |
b8dd7b9a | 1805 | status = nfserrno(err); |
1da177e4 LT |
1806 | goto out; |
1807 | out_resource: | |
1808 | *countp = 0; | |
1809 | status = nfserr_resource; | |
1810 | goto out; | |
1811 | out_serverfault: | |
1812 | status = nfserr_serverfault; | |
1813 | goto out; | |
1814 | } | |
1815 | ||
c0ce6ec8 BF |
1816 | static inline int attributes_need_mount(u32 *bmval) |
1817 | { | |
1818 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
1819 | return 1; | |
1820 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
1821 | return 1; | |
1822 | return 0; | |
1823 | } | |
1824 | ||
b37ad28b | 1825 | static __be32 |
1da177e4 | 1826 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, |
2ebbc012 | 1827 | const char *name, int namlen, __be32 *p, int *buflen) |
1da177e4 LT |
1828 | { |
1829 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
1830 | struct dentry *dentry; | |
b37ad28b | 1831 | __be32 nfserr; |
406a7ea9 | 1832 | int ignore_crossmnt = 0; |
1da177e4 LT |
1833 | |
1834 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
1835 | if (IS_ERR(dentry)) | |
1836 | return nfserrno(PTR_ERR(dentry)); | |
1837 | ||
1838 | exp_get(exp); | |
406a7ea9 FF |
1839 | /* |
1840 | * In the case of a mountpoint, the client may be asking for | |
1841 | * attributes that are only properties of the underlying filesystem | |
1842 | * as opposed to the cross-mounted file system. In such a case, | |
1843 | * we will not follow the cross mount and will fill the attribtutes | |
1844 | * directly from the mountpoint dentry. | |
1845 | */ | |
c0ce6ec8 | 1846 | if (d_mountpoint(dentry) && !attributes_need_mount(cd->rd_bmval)) |
406a7ea9 FF |
1847 | ignore_crossmnt = 1; |
1848 | else if (d_mountpoint(dentry)) { | |
021d3a72 BF |
1849 | int err; |
1850 | ||
dcb488a3 AA |
1851 | /* |
1852 | * Why the heck aren't we just using nfsd_lookup?? | |
1853 | * Different "."/".." handling? Something else? | |
1854 | * At least, add a comment here to explain.... | |
1855 | */ | |
021d3a72 BF |
1856 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
1857 | if (err) { | |
1858 | nfserr = nfserrno(err); | |
1da177e4 LT |
1859 | goto out_put; |
1860 | } | |
dcb488a3 AA |
1861 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
1862 | if (nfserr) | |
1863 | goto out_put; | |
1da177e4 LT |
1864 | |
1865 | } | |
1866 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, | |
406a7ea9 | 1867 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
1868 | out_put: |
1869 | dput(dentry); | |
1870 | exp_put(exp); | |
1871 | return nfserr; | |
1872 | } | |
1873 | ||
2ebbc012 | 1874 | static __be32 * |
b37ad28b | 1875 | nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr) |
1da177e4 | 1876 | { |
2ebbc012 | 1877 | __be32 *attrlenp; |
1da177e4 LT |
1878 | |
1879 | if (buflen < 6) | |
1880 | return NULL; | |
1881 | *p++ = htonl(2); | |
1882 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
1883 | *p++ = htonl(0); /* bmval1 */ | |
1884 | ||
1885 | attrlenp = p++; | |
1886 | *p++ = nfserr; /* no htonl */ | |
1887 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
1888 | return p; | |
1889 | } | |
1890 | ||
1891 | static int | |
a0ad13ef N |
1892 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
1893 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 1894 | { |
a0ad13ef | 1895 | struct readdir_cd *ccd = ccdv; |
1da177e4 LT |
1896 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
1897 | int buflen; | |
2ebbc012 | 1898 | __be32 *p = cd->buffer; |
b37ad28b | 1899 | __be32 nfserr = nfserr_toosmall; |
1da177e4 LT |
1900 | |
1901 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
1902 | if (name && isdotent(name, namlen)) { | |
1903 | cd->common.err = nfs_ok; | |
1904 | return 0; | |
1905 | } | |
1906 | ||
1907 | if (cd->offset) | |
1908 | xdr_encode_hyper(cd->offset, (u64) offset); | |
1909 | ||
1910 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); | |
1911 | if (buflen < 0) | |
1912 | goto fail; | |
1913 | ||
1914 | *p++ = xdr_one; /* mark entry present */ | |
1915 | cd->offset = p; /* remember pointer */ | |
1916 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ | |
1917 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
1918 | ||
1919 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen); | |
1920 | switch (nfserr) { | |
1921 | case nfs_ok: | |
1922 | p += buflen; | |
1923 | break; | |
1924 | case nfserr_resource: | |
1925 | nfserr = nfserr_toosmall; | |
1926 | goto fail; | |
1927 | case nfserr_dropit: | |
1928 | goto fail; | |
1929 | default: | |
1930 | /* | |
1931 | * If the client requested the RDATTR_ERROR attribute, | |
1932 | * we stuff the error code into this attribute | |
1933 | * and continue. If this attribute was not requested, | |
1934 | * then in accordance with the spec, we fail the | |
1935 | * entire READDIR operation(!) | |
1936 | */ | |
1937 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
1938 | goto fail; | |
1da177e4 | 1939 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
34081efc FI |
1940 | if (p == NULL) { |
1941 | nfserr = nfserr_toosmall; | |
1da177e4 | 1942 | goto fail; |
34081efc | 1943 | } |
1da177e4 LT |
1944 | } |
1945 | cd->buflen -= (p - cd->buffer); | |
1946 | cd->buffer = p; | |
1947 | cd->common.err = nfs_ok; | |
1948 | return 0; | |
1949 | fail: | |
1950 | cd->common.err = nfserr; | |
1951 | return -EINVAL; | |
1952 | } | |
1953 | ||
e2f282b9 BH |
1954 | static void |
1955 | nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid) | |
1956 | { | |
1957 | ENCODE_HEAD; | |
1958 | ||
1959 | RESERVE_SPACE(sizeof(stateid_t)); | |
1960 | WRITE32(sid->si_generation); | |
1961 | WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
1962 | ADJUST_ARGS(); | |
1963 | } | |
1964 | ||
695e12f8 | 1965 | static __be32 |
b37ad28b | 1966 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 LT |
1967 | { |
1968 | ENCODE_HEAD; | |
1969 | ||
1970 | if (!nfserr) { | |
1971 | RESERVE_SPACE(8); | |
1972 | WRITE32(access->ac_supported); | |
1973 | WRITE32(access->ac_resp_access); | |
1974 | ADJUST_ARGS(); | |
1975 | } | |
695e12f8 | 1976 | return nfserr; |
1da177e4 LT |
1977 | } |
1978 | ||
695e12f8 | 1979 | static __be32 |
b37ad28b | 1980 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 LT |
1981 | { |
1982 | ENCODE_SEQID_OP_HEAD; | |
1983 | ||
e2f282b9 BH |
1984 | if (!nfserr) |
1985 | nfsd4_encode_stateid(resp, &close->cl_stateid); | |
1986 | ||
1da177e4 | 1987 | ENCODE_SEQID_OP_TAIL(close->cl_stateowner); |
695e12f8 | 1988 | return nfserr; |
1da177e4 LT |
1989 | } |
1990 | ||
1991 | ||
695e12f8 | 1992 | static __be32 |
b37ad28b | 1993 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 LT |
1994 | { |
1995 | ENCODE_HEAD; | |
1996 | ||
1997 | if (!nfserr) { | |
1998 | RESERVE_SPACE(8); | |
1999 | WRITEMEM(commit->co_verf.data, 8); | |
2000 | ADJUST_ARGS(); | |
2001 | } | |
695e12f8 | 2002 | return nfserr; |
1da177e4 LT |
2003 | } |
2004 | ||
695e12f8 | 2005 | static __be32 |
b37ad28b | 2006 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 LT |
2007 | { |
2008 | ENCODE_HEAD; | |
2009 | ||
2010 | if (!nfserr) { | |
2011 | RESERVE_SPACE(32); | |
2012 | WRITECINFO(create->cr_cinfo); | |
2013 | WRITE32(2); | |
2014 | WRITE32(create->cr_bmval[0]); | |
2015 | WRITE32(create->cr_bmval[1]); | |
2016 | ADJUST_ARGS(); | |
2017 | } | |
695e12f8 | 2018 | return nfserr; |
1da177e4 LT |
2019 | } |
2020 | ||
b37ad28b AV |
2021 | static __be32 |
2022 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
2023 | { |
2024 | struct svc_fh *fhp = getattr->ga_fhp; | |
2025 | int buflen; | |
2026 | ||
2027 | if (nfserr) | |
2028 | return nfserr; | |
2029 | ||
2030 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); | |
2031 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, | |
2032 | resp->p, &buflen, getattr->ga_bmval, | |
406a7ea9 | 2033 | resp->rqstp, 0); |
1da177e4 LT |
2034 | if (!nfserr) |
2035 | resp->p += buflen; | |
2036 | return nfserr; | |
2037 | } | |
2038 | ||
695e12f8 BH |
2039 | static __be32 |
2040 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 2041 | { |
695e12f8 | 2042 | struct svc_fh *fhp = *fhpp; |
1da177e4 LT |
2043 | unsigned int len; |
2044 | ENCODE_HEAD; | |
2045 | ||
2046 | if (!nfserr) { | |
2047 | len = fhp->fh_handle.fh_size; | |
2048 | RESERVE_SPACE(len + 4); | |
2049 | WRITE32(len); | |
2050 | WRITEMEM(&fhp->fh_handle.fh_base, len); | |
2051 | ADJUST_ARGS(); | |
2052 | } | |
695e12f8 | 2053 | return nfserr; |
1da177e4 LT |
2054 | } |
2055 | ||
2056 | /* | |
2057 | * Including all fields other than the name, a LOCK4denied structure requires | |
2058 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
2059 | */ | |
2060 | static void | |
2061 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) | |
2062 | { | |
2063 | ENCODE_HEAD; | |
2064 | ||
2065 | RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0)); | |
2066 | WRITE64(ld->ld_start); | |
2067 | WRITE64(ld->ld_length); | |
2068 | WRITE32(ld->ld_type); | |
2069 | if (ld->ld_sop) { | |
2070 | WRITEMEM(&ld->ld_clientid, 8); | |
2071 | WRITE32(ld->ld_sop->so_owner.len); | |
2072 | WRITEMEM(ld->ld_sop->so_owner.data, ld->ld_sop->so_owner.len); | |
2073 | kref_put(&ld->ld_sop->so_ref, nfs4_free_stateowner); | |
2074 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ | |
2075 | WRITE64((u64)0); /* clientid */ | |
2076 | WRITE32(0); /* length of owner name */ | |
2077 | } | |
2078 | ADJUST_ARGS(); | |
2079 | } | |
2080 | ||
695e12f8 | 2081 | static __be32 |
b37ad28b | 2082 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 2083 | { |
1da177e4 LT |
2084 | ENCODE_SEQID_OP_HEAD; |
2085 | ||
e2f282b9 BH |
2086 | if (!nfserr) |
2087 | nfsd4_encode_stateid(resp, &lock->lk_resp_stateid); | |
2088 | else if (nfserr == nfserr_denied) | |
1da177e4 LT |
2089 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); |
2090 | ||
3a65588a | 2091 | ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner); |
695e12f8 | 2092 | return nfserr; |
1da177e4 LT |
2093 | } |
2094 | ||
695e12f8 | 2095 | static __be32 |
b37ad28b | 2096 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 LT |
2097 | { |
2098 | if (nfserr == nfserr_denied) | |
2099 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); | |
695e12f8 | 2100 | return nfserr; |
1da177e4 LT |
2101 | } |
2102 | ||
695e12f8 | 2103 | static __be32 |
b37ad28b | 2104 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 LT |
2105 | { |
2106 | ENCODE_SEQID_OP_HEAD; | |
2107 | ||
e2f282b9 BH |
2108 | if (!nfserr) |
2109 | nfsd4_encode_stateid(resp, &locku->lu_stateid); | |
2110 | ||
1da177e4 | 2111 | ENCODE_SEQID_OP_TAIL(locku->lu_stateowner); |
695e12f8 | 2112 | return nfserr; |
1da177e4 LT |
2113 | } |
2114 | ||
2115 | ||
695e12f8 | 2116 | static __be32 |
b37ad28b | 2117 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 LT |
2118 | { |
2119 | ENCODE_HEAD; | |
2120 | ||
2121 | if (!nfserr) { | |
2122 | RESERVE_SPACE(20); | |
2123 | WRITECINFO(link->li_cinfo); | |
2124 | ADJUST_ARGS(); | |
2125 | } | |
695e12f8 | 2126 | return nfserr; |
1da177e4 LT |
2127 | } |
2128 | ||
2129 | ||
695e12f8 | 2130 | static __be32 |
b37ad28b | 2131 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 2132 | { |
1b6b2257 | 2133 | ENCODE_HEAD; |
1da177e4 LT |
2134 | ENCODE_SEQID_OP_HEAD; |
2135 | ||
2136 | if (nfserr) | |
2137 | goto out; | |
2138 | ||
e2f282b9 BH |
2139 | nfsd4_encode_stateid(resp, &open->op_stateid); |
2140 | RESERVE_SPACE(40); | |
1da177e4 LT |
2141 | WRITECINFO(open->op_cinfo); |
2142 | WRITE32(open->op_rflags); | |
2143 | WRITE32(2); | |
2144 | WRITE32(open->op_bmval[0]); | |
2145 | WRITE32(open->op_bmval[1]); | |
2146 | WRITE32(open->op_delegate_type); | |
2147 | ADJUST_ARGS(); | |
2148 | ||
2149 | switch (open->op_delegate_type) { | |
2150 | case NFS4_OPEN_DELEGATE_NONE: | |
2151 | break; | |
2152 | case NFS4_OPEN_DELEGATE_READ: | |
e2f282b9 BH |
2153 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2154 | RESERVE_SPACE(20); | |
7b190fec | 2155 | WRITE32(open->op_recall); |
1da177e4 LT |
2156 | |
2157 | /* | |
2158 | * TODO: ACE's in delegations | |
2159 | */ | |
2160 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2161 | WRITE32(0); | |
2162 | WRITE32(0); | |
2163 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2164 | ADJUST_ARGS(); | |
2165 | break; | |
2166 | case NFS4_OPEN_DELEGATE_WRITE: | |
e2f282b9 BH |
2167 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2168 | RESERVE_SPACE(32); | |
1da177e4 LT |
2169 | WRITE32(0); |
2170 | ||
2171 | /* | |
2172 | * TODO: space_limit's in delegations | |
2173 | */ | |
2174 | WRITE32(NFS4_LIMIT_SIZE); | |
2175 | WRITE32(~(u32)0); | |
2176 | WRITE32(~(u32)0); | |
2177 | ||
2178 | /* | |
2179 | * TODO: ACE's in delegations | |
2180 | */ | |
2181 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2182 | WRITE32(0); | |
2183 | WRITE32(0); | |
2184 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2185 | ADJUST_ARGS(); | |
2186 | break; | |
2187 | default: | |
2188 | BUG(); | |
2189 | } | |
2190 | /* XXX save filehandle here */ | |
2191 | out: | |
2192 | ENCODE_SEQID_OP_TAIL(open->op_stateowner); | |
695e12f8 | 2193 | return nfserr; |
1da177e4 LT |
2194 | } |
2195 | ||
695e12f8 | 2196 | static __be32 |
b37ad28b | 2197 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 LT |
2198 | { |
2199 | ENCODE_SEQID_OP_HEAD; | |
e2f282b9 BH |
2200 | |
2201 | if (!nfserr) | |
2202 | nfsd4_encode_stateid(resp, &oc->oc_resp_stateid); | |
1da177e4 LT |
2203 | |
2204 | ENCODE_SEQID_OP_TAIL(oc->oc_stateowner); | |
695e12f8 | 2205 | return nfserr; |
1da177e4 LT |
2206 | } |
2207 | ||
695e12f8 | 2208 | static __be32 |
b37ad28b | 2209 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 LT |
2210 | { |
2211 | ENCODE_SEQID_OP_HEAD; | |
e2f282b9 BH |
2212 | |
2213 | if (!nfserr) | |
2214 | nfsd4_encode_stateid(resp, &od->od_stateid); | |
1da177e4 LT |
2215 | |
2216 | ENCODE_SEQID_OP_TAIL(od->od_stateowner); | |
695e12f8 | 2217 | return nfserr; |
1da177e4 LT |
2218 | } |
2219 | ||
b37ad28b AV |
2220 | static __be32 |
2221 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
44524359 | 2222 | struct nfsd4_read *read) |
1da177e4 LT |
2223 | { |
2224 | u32 eof; | |
2225 | int v, pn; | |
2226 | unsigned long maxcount; | |
2227 | long len; | |
2228 | ENCODE_HEAD; | |
2229 | ||
2230 | if (nfserr) | |
2231 | return nfserr; | |
2232 | if (resp->xbuf->page_len) | |
2233 | return nfserr_resource; | |
2234 | ||
2235 | RESERVE_SPACE(8); /* eof flag and byte count */ | |
2236 | ||
7adae489 | 2237 | maxcount = svc_max_payload(resp->rqstp); |
1da177e4 LT |
2238 | if (maxcount > read->rd_length) |
2239 | maxcount = read->rd_length; | |
2240 | ||
2241 | len = maxcount; | |
2242 | v = 0; | |
2243 | while (len > 0) { | |
44524359 | 2244 | pn = resp->rqstp->rq_resused++; |
3cc03b16 | 2245 | resp->rqstp->rq_vec[v].iov_base = |
44524359 | 2246 | page_address(resp->rqstp->rq_respages[pn]); |
3cc03b16 | 2247 | resp->rqstp->rq_vec[v].iov_len = |
44524359 | 2248 | len < PAGE_SIZE ? len : PAGE_SIZE; |
1da177e4 LT |
2249 | v++; |
2250 | len -= PAGE_SIZE; | |
2251 | } | |
2252 | read->rd_vlen = v; | |
2253 | ||
2254 | nfserr = nfsd_read(read->rd_rqstp, read->rd_fhp, read->rd_filp, | |
3cc03b16 | 2255 | read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, |
1da177e4 LT |
2256 | &maxcount); |
2257 | ||
2258 | if (nfserr == nfserr_symlink) | |
2259 | nfserr = nfserr_inval; | |
2260 | if (nfserr) | |
2261 | return nfserr; | |
44524359 N |
2262 | eof = (read->rd_offset + maxcount >= |
2263 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 LT |
2264 | |
2265 | WRITE32(eof); | |
2266 | WRITE32(maxcount); | |
2267 | ADJUST_ARGS(); | |
6ed6decc N |
2268 | resp->xbuf->head[0].iov_len = (char*)p |
2269 | - (char*)resp->xbuf->head[0].iov_base; | |
1da177e4 LT |
2270 | resp->xbuf->page_len = maxcount; |
2271 | ||
6ed6decc | 2272 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2273 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2274 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2275 | if (maxcount&3) { |
6ed6decc N |
2276 | RESERVE_SPACE(4); |
2277 | WRITE32(0); | |
1da177e4 LT |
2278 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2279 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2280 | ADJUST_ARGS(); |
1da177e4 LT |
2281 | } |
2282 | return 0; | |
2283 | } | |
2284 | ||
b37ad28b AV |
2285 | static __be32 |
2286 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
2287 | { |
2288 | int maxcount; | |
2289 | char *page; | |
2290 | ENCODE_HEAD; | |
2291 | ||
2292 | if (nfserr) | |
2293 | return nfserr; | |
2294 | if (resp->xbuf->page_len) | |
2295 | return nfserr_resource; | |
2296 | ||
44524359 | 2297 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
1da177e4 LT |
2298 | |
2299 | maxcount = PAGE_SIZE; | |
2300 | RESERVE_SPACE(4); | |
2301 | ||
2302 | /* | |
2303 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
2304 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
2305 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
2306 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
2307 | */ | |
2308 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); | |
2309 | if (nfserr == nfserr_isdir) | |
2310 | return nfserr_inval; | |
2311 | if (nfserr) | |
2312 | return nfserr; | |
2313 | ||
2314 | WRITE32(maxcount); | |
2315 | ADJUST_ARGS(); | |
6ed6decc N |
2316 | resp->xbuf->head[0].iov_len = (char*)p |
2317 | - (char*)resp->xbuf->head[0].iov_base; | |
2318 | resp->xbuf->page_len = maxcount; | |
1da177e4 | 2319 | |
6ed6decc | 2320 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2321 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2322 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2323 | if (maxcount&3) { |
6ed6decc N |
2324 | RESERVE_SPACE(4); |
2325 | WRITE32(0); | |
1da177e4 LT |
2326 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2327 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2328 | ADJUST_ARGS(); |
1da177e4 LT |
2329 | } |
2330 | return 0; | |
2331 | } | |
2332 | ||
b37ad28b AV |
2333 | static __be32 |
2334 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
2335 | { |
2336 | int maxcount; | |
2337 | loff_t offset; | |
2ebbc012 | 2338 | __be32 *page, *savep, *tailbase; |
1da177e4 LT |
2339 | ENCODE_HEAD; |
2340 | ||
2341 | if (nfserr) | |
2342 | return nfserr; | |
2343 | if (resp->xbuf->page_len) | |
2344 | return nfserr_resource; | |
2345 | ||
2346 | RESERVE_SPACE(8); /* verifier */ | |
2347 | savep = p; | |
2348 | ||
2349 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
2350 | WRITE32(0); | |
2351 | WRITE32(0); | |
2352 | ADJUST_ARGS(); | |
2353 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; | |
bb6e8a9f | 2354 | tailbase = p; |
1da177e4 LT |
2355 | |
2356 | maxcount = PAGE_SIZE; | |
2357 | if (maxcount > readdir->rd_maxcount) | |
2358 | maxcount = readdir->rd_maxcount; | |
2359 | ||
2360 | /* | |
2361 | * Convert from bytes to words, account for the two words already | |
2362 | * written, make sure to leave two words at the end for the next | |
2363 | * pointer and eof field. | |
2364 | */ | |
2365 | maxcount = (maxcount >> 2) - 4; | |
2366 | if (maxcount < 0) { | |
2367 | nfserr = nfserr_toosmall; | |
2368 | goto err_no_verf; | |
2369 | } | |
2370 | ||
44524359 | 2371 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
1da177e4 LT |
2372 | readdir->common.err = 0; |
2373 | readdir->buflen = maxcount; | |
2374 | readdir->buffer = page; | |
2375 | readdir->offset = NULL; | |
2376 | ||
2377 | offset = readdir->rd_cookie; | |
2378 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
2379 | &offset, | |
2380 | &readdir->common, nfsd4_encode_dirent); | |
2381 | if (nfserr == nfs_ok && | |
2382 | readdir->common.err == nfserr_toosmall && | |
2383 | readdir->buffer == page) | |
2384 | nfserr = nfserr_toosmall; | |
2385 | if (nfserr == nfserr_symlink) | |
2386 | nfserr = nfserr_notdir; | |
2387 | if (nfserr) | |
2388 | goto err_no_verf; | |
2389 | ||
2390 | if (readdir->offset) | |
2391 | xdr_encode_hyper(readdir->offset, offset); | |
2392 | ||
2393 | p = readdir->buffer; | |
2394 | *p++ = 0; /* no more entries */ | |
2395 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
44524359 N |
2396 | resp->xbuf->page_len = ((char*)p) - (char*)page_address( |
2397 | resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); | |
1da177e4 | 2398 | |
bb6e8a9f | 2399 | /* Use rest of head for padding and remaining ops: */ |
bb6e8a9f | 2400 | resp->xbuf->tail[0].iov_base = tailbase; |
1da177e4 LT |
2401 | resp->xbuf->tail[0].iov_len = 0; |
2402 | resp->p = resp->xbuf->tail[0].iov_base; | |
bb6e8a9f | 2403 | resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; |
1da177e4 LT |
2404 | |
2405 | return 0; | |
2406 | err_no_verf: | |
2407 | p = savep; | |
2408 | ADJUST_ARGS(); | |
2409 | return nfserr; | |
2410 | } | |
2411 | ||
695e12f8 | 2412 | static __be32 |
b37ad28b | 2413 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 LT |
2414 | { |
2415 | ENCODE_HEAD; | |
2416 | ||
2417 | if (!nfserr) { | |
2418 | RESERVE_SPACE(20); | |
2419 | WRITECINFO(remove->rm_cinfo); | |
2420 | ADJUST_ARGS(); | |
2421 | } | |
695e12f8 | 2422 | return nfserr; |
1da177e4 LT |
2423 | } |
2424 | ||
695e12f8 | 2425 | static __be32 |
b37ad28b | 2426 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 LT |
2427 | { |
2428 | ENCODE_HEAD; | |
2429 | ||
2430 | if (!nfserr) { | |
2431 | RESERVE_SPACE(40); | |
2432 | WRITECINFO(rename->rn_sinfo); | |
2433 | WRITECINFO(rename->rn_tinfo); | |
2434 | ADJUST_ARGS(); | |
2435 | } | |
695e12f8 | 2436 | return nfserr; |
1da177e4 LT |
2437 | } |
2438 | ||
695e12f8 | 2439 | static __be32 |
ca5c8cde | 2440 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, |
dcb488a3 AA |
2441 | struct nfsd4_secinfo *secinfo) |
2442 | { | |
2443 | int i = 0; | |
2444 | struct svc_export *exp = secinfo->si_exp; | |
4796f457 BF |
2445 | u32 nflavs; |
2446 | struct exp_flavor_info *flavs; | |
2447 | struct exp_flavor_info def_flavs[2]; | |
dcb488a3 AA |
2448 | ENCODE_HEAD; |
2449 | ||
2450 | if (nfserr) | |
2451 | goto out; | |
4796f457 BF |
2452 | if (exp->ex_nflavors) { |
2453 | flavs = exp->ex_flavors; | |
2454 | nflavs = exp->ex_nflavors; | |
2455 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
2456 | flavs = def_flavs; | |
2457 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
2458 | nflavs = 2; | |
2459 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
2460 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
2461 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
2462 | nflavs = 1; | |
2463 | flavs[0].pseudoflavor | |
2464 | = svcauth_gss_flavor(exp->ex_client); | |
2465 | } else { | |
2466 | nflavs = 1; | |
2467 | flavs[0].pseudoflavor | |
2468 | = exp->ex_client->flavour->flavour; | |
2469 | } | |
2470 | } | |
2471 | ||
dcb488a3 | 2472 | RESERVE_SPACE(4); |
4796f457 | 2473 | WRITE32(nflavs); |
dcb488a3 | 2474 | ADJUST_ARGS(); |
4796f457 BF |
2475 | for (i = 0; i < nflavs; i++) { |
2476 | u32 flav = flavs[i].pseudoflavor; | |
dcb488a3 AA |
2477 | struct gss_api_mech *gm = gss_mech_get_by_pseudoflavor(flav); |
2478 | ||
2479 | if (gm) { | |
2480 | RESERVE_SPACE(4); | |
2481 | WRITE32(RPC_AUTH_GSS); | |
2482 | ADJUST_ARGS(); | |
2483 | RESERVE_SPACE(4 + gm->gm_oid.len); | |
2484 | WRITE32(gm->gm_oid.len); | |
2485 | WRITEMEM(gm->gm_oid.data, gm->gm_oid.len); | |
2486 | ADJUST_ARGS(); | |
2487 | RESERVE_SPACE(4); | |
2488 | WRITE32(0); /* qop */ | |
2489 | ADJUST_ARGS(); | |
2490 | RESERVE_SPACE(4); | |
2491 | WRITE32(gss_pseudoflavor_to_service(gm, flav)); | |
2492 | ADJUST_ARGS(); | |
2493 | gss_mech_put(gm); | |
2494 | } else { | |
2495 | RESERVE_SPACE(4); | |
2496 | WRITE32(flav); | |
2497 | ADJUST_ARGS(); | |
2498 | } | |
2499 | } | |
2500 | out: | |
2501 | if (exp) | |
2502 | exp_put(exp); | |
695e12f8 | 2503 | return nfserr; |
dcb488a3 AA |
2504 | } |
2505 | ||
1da177e4 LT |
2506 | /* |
2507 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
2508 | * regardless of the error status. | |
2509 | */ | |
695e12f8 | 2510 | static __be32 |
b37ad28b | 2511 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 LT |
2512 | { |
2513 | ENCODE_HEAD; | |
2514 | ||
2515 | RESERVE_SPACE(12); | |
2516 | if (nfserr) { | |
2517 | WRITE32(2); | |
2518 | WRITE32(0); | |
2519 | WRITE32(0); | |
2520 | } | |
2521 | else { | |
2522 | WRITE32(2); | |
2523 | WRITE32(setattr->sa_bmval[0]); | |
2524 | WRITE32(setattr->sa_bmval[1]); | |
2525 | } | |
2526 | ADJUST_ARGS(); | |
695e12f8 | 2527 | return nfserr; |
1da177e4 LT |
2528 | } |
2529 | ||
695e12f8 | 2530 | static __be32 |
b37ad28b | 2531 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 LT |
2532 | { |
2533 | ENCODE_HEAD; | |
2534 | ||
2535 | if (!nfserr) { | |
2536 | RESERVE_SPACE(8 + sizeof(nfs4_verifier)); | |
2537 | WRITEMEM(&scd->se_clientid, 8); | |
2538 | WRITEMEM(&scd->se_confirm, sizeof(nfs4_verifier)); | |
2539 | ADJUST_ARGS(); | |
2540 | } | |
2541 | else if (nfserr == nfserr_clid_inuse) { | |
2542 | RESERVE_SPACE(8); | |
2543 | WRITE32(0); | |
2544 | WRITE32(0); | |
2545 | ADJUST_ARGS(); | |
2546 | } | |
695e12f8 | 2547 | return nfserr; |
1da177e4 LT |
2548 | } |
2549 | ||
695e12f8 | 2550 | static __be32 |
b37ad28b | 2551 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 LT |
2552 | { |
2553 | ENCODE_HEAD; | |
2554 | ||
2555 | if (!nfserr) { | |
2556 | RESERVE_SPACE(16); | |
2557 | WRITE32(write->wr_bytes_written); | |
2558 | WRITE32(write->wr_how_written); | |
2559 | WRITEMEM(write->wr_verifier.data, 8); | |
2560 | ADJUST_ARGS(); | |
2561 | } | |
695e12f8 | 2562 | return nfserr; |
1da177e4 LT |
2563 | } |
2564 | ||
695e12f8 BH |
2565 | static __be32 |
2566 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
2567 | { | |
2568 | return nfserr; | |
2569 | } | |
2570 | ||
2571 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
2572 | ||
2573 | static nfsd4_enc nfsd4_enc_ops[] = { | |
ad1060c8 BF |
2574 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
2575 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
2576 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
2577 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
2578 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
2579 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
2580 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
2581 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
2582 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
2583 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
2584 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
2585 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
2586 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
2587 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
2588 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
2589 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
2590 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, | |
2591 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
2592 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
2593 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
2594 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
2595 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
2596 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
2597 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
2598 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
2599 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
2600 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
2601 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
2602 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
2603 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
2604 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
2605 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
2606 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
2607 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
2608 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
2609 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
695e12f8 BH |
2610 | }; |
2611 | ||
1da177e4 LT |
2612 | void |
2613 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
2614 | { | |
2ebbc012 | 2615 | __be32 *statp; |
1da177e4 LT |
2616 | ENCODE_HEAD; |
2617 | ||
2618 | RESERVE_SPACE(8); | |
2619 | WRITE32(op->opnum); | |
2620 | statp = p++; /* to be backfilled at the end */ | |
2621 | ADJUST_ARGS(); | |
2622 | ||
695e12f8 BH |
2623 | if (op->opnum == OP_ILLEGAL) |
2624 | goto status; | |
2625 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || | |
2626 | !nfsd4_enc_ops[op->opnum]); | |
2627 | op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u); | |
2628 | status: | |
1da177e4 LT |
2629 | /* |
2630 | * Note: We write the status directly, instead of using WRITE32(), | |
2631 | * since it is already in network byte order. | |
2632 | */ | |
2633 | *statp = op->status; | |
2634 | } | |
2635 | ||
2636 | /* | |
2637 | * Encode the reply stored in the stateowner reply cache | |
2638 | * | |
2639 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
2640 | * previously sent already encoded operation. | |
2641 | * | |
2642 | * called with nfs4_lock_state() held | |
2643 | */ | |
2644 | void | |
2645 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
2646 | { | |
2647 | ENCODE_HEAD; | |
2648 | struct nfs4_replay *rp = op->replay; | |
2649 | ||
2650 | BUG_ON(!rp); | |
2651 | ||
2652 | RESERVE_SPACE(8); | |
2653 | WRITE32(op->opnum); | |
2654 | *p++ = rp->rp_status; /* already xdr'ed */ | |
2655 | ADJUST_ARGS(); | |
2656 | ||
2657 | RESERVE_SPACE(rp->rp_buflen); | |
2658 | WRITEMEM(rp->rp_buf, rp->rp_buflen); | |
2659 | ADJUST_ARGS(); | |
2660 | } | |
2661 | ||
2662 | /* | |
2663 | * END OF "GENERIC" ENCODE ROUTINES. | |
2664 | */ | |
2665 | ||
2666 | int | |
2ebbc012 | 2667 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
2668 | { |
2669 | return xdr_ressize_check(rqstp, p); | |
2670 | } | |
2671 | ||
2672 | void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args) | |
2673 | { | |
2674 | if (args->ops != args->iops) { | |
2675 | kfree(args->ops); | |
2676 | args->ops = args->iops; | |
2677 | } | |
f99d49ad JJ |
2678 | kfree(args->tmpp); |
2679 | args->tmpp = NULL; | |
1da177e4 LT |
2680 | while (args->to_free) { |
2681 | struct tmpbuf *tb = args->to_free; | |
2682 | args->to_free = tb->next; | |
2683 | tb->release(tb->buf); | |
2684 | kfree(tb); | |
2685 | } | |
2686 | } | |
2687 | ||
2688 | int | |
2ebbc012 | 2689 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 2690 | { |
b37ad28b | 2691 | __be32 status; |
1da177e4 LT |
2692 | |
2693 | args->p = p; | |
2694 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
2695 | args->pagelist = rqstp->rq_arg.pages; | |
2696 | args->pagelen = rqstp->rq_arg.page_len; | |
2697 | args->tmpp = NULL; | |
2698 | args->to_free = NULL; | |
2699 | args->ops = args->iops; | |
2700 | args->rqstp = rqstp; | |
2701 | ||
2702 | status = nfsd4_decode_compound(args); | |
2703 | if (status) { | |
2704 | nfsd4_release_compoundargs(args); | |
2705 | } | |
2706 | return !status; | |
2707 | } | |
2708 | ||
2709 | int | |
2ebbc012 | 2710 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
2711 | { |
2712 | /* | |
2713 | * All that remains is to write the tag and operation count... | |
2714 | */ | |
2715 | struct kvec *iov; | |
2716 | p = resp->tagp; | |
2717 | *p++ = htonl(resp->taglen); | |
2718 | memcpy(p, resp->tag, resp->taglen); | |
2719 | p += XDR_QUADLEN(resp->taglen); | |
2720 | *p++ = htonl(resp->opcnt); | |
2721 | ||
2722 | if (rqstp->rq_res.page_len) | |
2723 | iov = &rqstp->rq_res.tail[0]; | |
2724 | else | |
2725 | iov = &rqstp->rq_res.head[0]; | |
2726 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; | |
2727 | BUG_ON(iov->iov_len > PAGE_SIZE); | |
2728 | return 1; | |
2729 | } | |
2730 | ||
2731 | /* | |
2732 | * Local variables: | |
2733 | * c-basic-offset: 8 | |
2734 | * End: | |
2735 | */ |