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Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Server-side XDR for NFSv4 |
3 | * | |
4 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Kendrick Smith <kmsmith@umich.edu> | |
8 | * Andy Adamson <andros@umich.edu> | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or without | |
11 | * modification, are permitted provided that the following conditions | |
12 | * are met: | |
13 | * | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions and the following disclaimer. | |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in the | |
18 | * documentation and/or other materials provided with the distribution. | |
19 | * 3. Neither the name of the University nor the names of its | |
20 | * contributors may be used to endorse or promote products derived | |
21 | * from this software without specific prior written permission. | |
22 | * | |
23 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
24 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
25 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
26 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
30 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
31 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
32 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
33 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
34 | * | |
35 | * TODO: Neil Brown made the following observation: We currently | |
36 | * initially reserve NFSD_BUFSIZE space on the transmit queue and | |
37 | * never release any of that until the request is complete. | |
38 | * It would be good to calculate a new maximum response size while | |
39 | * decoding the COMPOUND, and call svc_reserve with this number | |
40 | * at the end of nfs4svc_decode_compoundargs. | |
41 | */ | |
42 | ||
43 | #include <linux/param.h> | |
44 | #include <linux/smp.h> | |
1da177e4 LT |
45 | #include <linux/fs.h> |
46 | #include <linux/namei.h> | |
47 | #include <linux/vfs.h> | |
0733d213 | 48 | #include <linux/utsname.h> |
1da177e4 LT |
49 | #include <linux/sunrpc/xdr.h> |
50 | #include <linux/sunrpc/svc.h> | |
51 | #include <linux/sunrpc/clnt.h> | |
52 | #include <linux/nfsd/nfsd.h> | |
53 | #include <linux/nfsd/state.h> | |
54 | #include <linux/nfsd/xdr4.h> | |
55 | #include <linux/nfsd_idmap.h> | |
56 | #include <linux/nfs4.h> | |
57 | #include <linux/nfs4_acl.h> | |
dcb488a3 | 58 | #include <linux/sunrpc/gss_api.h> |
4796f457 | 59 | #include <linux/sunrpc/svcauth_gss.h> |
1da177e4 LT |
60 | |
61 | #define NFSDDBG_FACILITY NFSDDBG_XDR | |
62 | ||
42ca0993 BF |
63 | /* |
64 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing | |
65 | * directory in order to indicate to the client that a filesystem boundary is present | |
66 | * We use a fixed fsid for a referral | |
67 | */ | |
68 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL | |
69 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL | |
70 | ||
b37ad28b AV |
71 | static __be32 |
72 | check_filename(char *str, int len, __be32 err) | |
1da177e4 LT |
73 | { |
74 | int i; | |
75 | ||
76 | if (len == 0) | |
77 | return nfserr_inval; | |
78 | if (isdotent(str, len)) | |
79 | return err; | |
80 | for (i = 0; i < len; i++) | |
81 | if (str[i] == '/') | |
82 | return err; | |
83 | return 0; | |
84 | } | |
85 | ||
86 | /* | |
87 | * START OF "GENERIC" DECODE ROUTINES. | |
88 | * These may look a little ugly since they are imported from a "generic" | |
89 | * set of XDR encode/decode routines which are intended to be shared by | |
90 | * all of our NFSv4 implementations (OpenBSD, MacOS X...). | |
91 | * | |
92 | * If the pain of reading these is too great, it should be a straightforward | |
93 | * task to translate them into Linux-specific versions which are more | |
94 | * consistent with the style used in NFSv2/v3... | |
95 | */ | |
96 | #define DECODE_HEAD \ | |
2ebbc012 | 97 | __be32 *p; \ |
b37ad28b | 98 | __be32 status |
1da177e4 LT |
99 | #define DECODE_TAIL \ |
100 | status = 0; \ | |
101 | out: \ | |
102 | return status; \ | |
103 | xdr_error: \ | |
817cb9d4 CL |
104 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
105 | __FILE__, __LINE__); \ | |
1da177e4 LT |
106 | status = nfserr_bad_xdr; \ |
107 | goto out | |
108 | ||
109 | #define READ32(x) (x) = ntohl(*p++) | |
110 | #define READ64(x) do { \ | |
111 | (x) = (u64)ntohl(*p++) << 32; \ | |
112 | (x) |= ntohl(*p++); \ | |
113 | } while (0) | |
114 | #define READTIME(x) do { \ | |
115 | p++; \ | |
116 | (x) = ntohl(*p++); \ | |
117 | p++; \ | |
118 | } while (0) | |
119 | #define READMEM(x,nbytes) do { \ | |
120 | x = (char *)p; \ | |
121 | p += XDR_QUADLEN(nbytes); \ | |
122 | } while (0) | |
123 | #define SAVEMEM(x,nbytes) do { \ | |
124 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
125 | savemem(argp, p, nbytes) : \ | |
126 | (char *)p)) { \ | |
817cb9d4 CL |
127 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
128 | __FILE__, __LINE__); \ | |
1da177e4 LT |
129 | goto xdr_error; \ |
130 | } \ | |
131 | p += XDR_QUADLEN(nbytes); \ | |
132 | } while (0) | |
133 | #define COPYMEM(x,nbytes) do { \ | |
134 | memcpy((x), p, nbytes); \ | |
135 | p += XDR_QUADLEN(nbytes); \ | |
136 | } while (0) | |
137 | ||
138 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ | |
139 | #define READ_BUF(nbytes) do { \ | |
140 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ | |
141 | p = argp->p; \ | |
142 | argp->p += XDR_QUADLEN(nbytes); \ | |
143 | } else if (!(p = read_buf(argp, nbytes))) { \ | |
817cb9d4 CL |
144 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
145 | __FILE__, __LINE__); \ | |
1da177e4 LT |
146 | goto xdr_error; \ |
147 | } \ | |
148 | } while (0) | |
149 | ||
ca2a05aa | 150 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
1da177e4 LT |
151 | { |
152 | /* We want more bytes than seem to be available. | |
153 | * Maybe we need a new page, maybe we have just run out | |
154 | */ | |
ca2a05aa | 155 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
2ebbc012 | 156 | __be32 *p; |
1da177e4 LT |
157 | if (avail + argp->pagelen < nbytes) |
158 | return NULL; | |
159 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ | |
160 | return NULL; | |
161 | /* ok, we can do it with the current plus the next page */ | |
162 | if (nbytes <= sizeof(argp->tmp)) | |
163 | p = argp->tmp; | |
164 | else { | |
f99d49ad | 165 | kfree(argp->tmpp); |
1da177e4 LT |
166 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
167 | if (!p) | |
168 | return NULL; | |
169 | ||
170 | } | |
ca2a05aa BF |
171 | /* |
172 | * The following memcpy is safe because read_buf is always | |
173 | * called with nbytes > avail, and the two cases above both | |
174 | * guarantee p points to at least nbytes bytes. | |
175 | */ | |
1da177e4 LT |
176 | memcpy(p, argp->p, avail); |
177 | /* step to next page */ | |
178 | argp->p = page_address(argp->pagelist[0]); | |
179 | argp->pagelist++; | |
180 | if (argp->pagelen < PAGE_SIZE) { | |
181 | argp->end = p + (argp->pagelen>>2); | |
182 | argp->pagelen = 0; | |
183 | } else { | |
184 | argp->end = p + (PAGE_SIZE>>2); | |
185 | argp->pagelen -= PAGE_SIZE; | |
186 | } | |
187 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); | |
188 | argp->p += XDR_QUADLEN(nbytes - avail); | |
189 | return p; | |
190 | } | |
191 | ||
60adfc50 AA |
192 | static int zero_clientid(clientid_t *clid) |
193 | { | |
194 | return (clid->cl_boot == 0) && (clid->cl_id == 0); | |
195 | } | |
196 | ||
1da177e4 LT |
197 | static int |
198 | defer_free(struct nfsd4_compoundargs *argp, | |
199 | void (*release)(const void *), void *p) | |
200 | { | |
201 | struct tmpbuf *tb; | |
202 | ||
203 | tb = kmalloc(sizeof(*tb), GFP_KERNEL); | |
204 | if (!tb) | |
205 | return -ENOMEM; | |
206 | tb->buf = p; | |
207 | tb->release = release; | |
208 | tb->next = argp->to_free; | |
209 | argp->to_free = tb; | |
210 | return 0; | |
211 | } | |
212 | ||
2ebbc012 | 213 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
1da177e4 | 214 | { |
1da177e4 | 215 | if (p == argp->tmp) { |
a4db5fe5 BF |
216 | p = kmalloc(nbytes, GFP_KERNEL); |
217 | if (!p) | |
218 | return NULL; | |
1da177e4 LT |
219 | memcpy(p, argp->tmp, nbytes); |
220 | } else { | |
73dff8be | 221 | BUG_ON(p != argp->tmpp); |
1da177e4 LT |
222 | argp->tmpp = NULL; |
223 | } | |
224 | if (defer_free(argp, kfree, p)) { | |
a4db5fe5 | 225 | kfree(p); |
1da177e4 LT |
226 | return NULL; |
227 | } else | |
228 | return (char *)p; | |
229 | } | |
230 | ||
b37ad28b | 231 | static __be32 |
1da177e4 LT |
232 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
233 | { | |
234 | u32 bmlen; | |
235 | DECODE_HEAD; | |
236 | ||
237 | bmval[0] = 0; | |
238 | bmval[1] = 0; | |
239 | ||
240 | READ_BUF(4); | |
241 | READ32(bmlen); | |
242 | if (bmlen > 1000) | |
243 | goto xdr_error; | |
244 | ||
245 | READ_BUF(bmlen << 2); | |
246 | if (bmlen > 0) | |
247 | READ32(bmval[0]); | |
248 | if (bmlen > 1) | |
249 | READ32(bmval[1]); | |
250 | ||
251 | DECODE_TAIL; | |
252 | } | |
253 | ||
c0d6fc8a BH |
254 | static u32 nfsd_attrmask[] = { |
255 | NFSD_WRITEABLE_ATTRS_WORD0, | |
256 | NFSD_WRITEABLE_ATTRS_WORD1 | |
257 | }; | |
258 | ||
b37ad28b | 259 | static __be32 |
c0d6fc8a BH |
260 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, u32 *writable, |
261 | struct iattr *iattr, struct nfs4_acl **acl) | |
1da177e4 LT |
262 | { |
263 | int expected_len, len = 0; | |
264 | u32 dummy32; | |
265 | char *buf; | |
b8dd7b9a | 266 | int host_err; |
1da177e4 LT |
267 | |
268 | DECODE_HEAD; | |
269 | iattr->ia_valid = 0; | |
270 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
271 | return status; | |
272 | ||
273 | /* | |
f34f9242 | 274 | * According to spec, unsupported attributes return ERR_ATTRNOTSUPP; |
1da177e4 LT |
275 | * read-only attributes return ERR_INVAL. |
276 | */ | |
277 | if ((bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) || (bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1)) | |
278 | return nfserr_attrnotsupp; | |
c0d6fc8a | 279 | if ((bmval[0] & ~writable[0]) || (bmval[1] & ~writable[1])) |
1da177e4 LT |
280 | return nfserr_inval; |
281 | ||
282 | READ_BUF(4); | |
283 | READ32(expected_len); | |
284 | ||
285 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
286 | READ_BUF(8); | |
287 | len += 8; | |
288 | READ64(iattr->ia_size); | |
289 | iattr->ia_valid |= ATTR_SIZE; | |
290 | } | |
291 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
28e05dd8 BF |
292 | int nace; |
293 | struct nfs4_ace *ace; | |
1da177e4 LT |
294 | |
295 | READ_BUF(4); len += 4; | |
296 | READ32(nace); | |
297 | ||
28e05dd8 BF |
298 | if (nace > NFS4_ACL_MAX) |
299 | return nfserr_resource; | |
300 | ||
301 | *acl = nfs4_acl_new(nace); | |
1da177e4 | 302 | if (*acl == NULL) { |
b8dd7b9a | 303 | host_err = -ENOMEM; |
1da177e4 LT |
304 | goto out_nfserr; |
305 | } | |
28e05dd8 | 306 | defer_free(argp, kfree, *acl); |
1da177e4 | 307 | |
28e05dd8 BF |
308 | (*acl)->naces = nace; |
309 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { | |
1da177e4 | 310 | READ_BUF(16); len += 16; |
28e05dd8 BF |
311 | READ32(ace->type); |
312 | READ32(ace->flag); | |
313 | READ32(ace->access_mask); | |
1da177e4 LT |
314 | READ32(dummy32); |
315 | READ_BUF(dummy32); | |
316 | len += XDR_QUADLEN(dummy32) << 2; | |
317 | READMEM(buf, dummy32); | |
28e05dd8 | 318 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
b8dd7b9a | 319 | host_err = 0; |
28e05dd8 BF |
320 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
321 | ace->who = 0; | |
322 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) | |
b8dd7b9a | 323 | host_err = nfsd_map_name_to_gid(argp->rqstp, |
28e05dd8 | 324 | buf, dummy32, &ace->who); |
1da177e4 | 325 | else |
b8dd7b9a | 326 | host_err = nfsd_map_name_to_uid(argp->rqstp, |
28e05dd8 | 327 | buf, dummy32, &ace->who); |
b8dd7b9a | 328 | if (host_err) |
1da177e4 | 329 | goto out_nfserr; |
1da177e4 LT |
330 | } |
331 | } else | |
332 | *acl = NULL; | |
333 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
334 | READ_BUF(4); | |
335 | len += 4; | |
336 | READ32(iattr->ia_mode); | |
337 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); | |
338 | iattr->ia_valid |= ATTR_MODE; | |
339 | } | |
340 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
341 | READ_BUF(4); | |
342 | len += 4; | |
343 | READ32(dummy32); | |
344 | READ_BUF(dummy32); | |
345 | len += (XDR_QUADLEN(dummy32) << 2); | |
346 | READMEM(buf, dummy32); | |
b8dd7b9a | 347 | if ((host_err = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
1da177e4 LT |
348 | goto out_nfserr; |
349 | iattr->ia_valid |= ATTR_UID; | |
350 | } | |
351 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
352 | READ_BUF(4); | |
353 | len += 4; | |
354 | READ32(dummy32); | |
355 | READ_BUF(dummy32); | |
356 | len += (XDR_QUADLEN(dummy32) << 2); | |
357 | READMEM(buf, dummy32); | |
b8dd7b9a | 358 | if ((host_err = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
1da177e4 LT |
359 | goto out_nfserr; |
360 | iattr->ia_valid |= ATTR_GID; | |
361 | } | |
362 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
363 | READ_BUF(4); | |
364 | len += 4; | |
365 | READ32(dummy32); | |
366 | switch (dummy32) { | |
367 | case NFS4_SET_TO_CLIENT_TIME: | |
368 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
369 | all 32 bits of 'nseconds'. */ | |
370 | READ_BUF(12); | |
371 | len += 12; | |
372 | READ32(dummy32); | |
373 | if (dummy32) | |
374 | return nfserr_inval; | |
375 | READ32(iattr->ia_atime.tv_sec); | |
376 | READ32(iattr->ia_atime.tv_nsec); | |
377 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) | |
378 | return nfserr_inval; | |
379 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); | |
380 | break; | |
381 | case NFS4_SET_TO_SERVER_TIME: | |
382 | iattr->ia_valid |= ATTR_ATIME; | |
383 | break; | |
384 | default: | |
385 | goto xdr_error; | |
386 | } | |
387 | } | |
1da177e4 LT |
388 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
389 | READ_BUF(4); | |
390 | len += 4; | |
391 | READ32(dummy32); | |
392 | switch (dummy32) { | |
393 | case NFS4_SET_TO_CLIENT_TIME: | |
394 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
395 | all 32 bits of 'nseconds'. */ | |
396 | READ_BUF(12); | |
397 | len += 12; | |
398 | READ32(dummy32); | |
399 | if (dummy32) | |
400 | return nfserr_inval; | |
401 | READ32(iattr->ia_mtime.tv_sec); | |
402 | READ32(iattr->ia_mtime.tv_nsec); | |
403 | if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) | |
404 | return nfserr_inval; | |
405 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); | |
406 | break; | |
407 | case NFS4_SET_TO_SERVER_TIME: | |
408 | iattr->ia_valid |= ATTR_MTIME; | |
409 | break; | |
410 | default: | |
411 | goto xdr_error; | |
412 | } | |
413 | } | |
414 | if (len != expected_len) | |
415 | goto xdr_error; | |
416 | ||
417 | DECODE_TAIL; | |
418 | ||
419 | out_nfserr: | |
b8dd7b9a | 420 | status = nfserrno(host_err); |
1da177e4 LT |
421 | goto out; |
422 | } | |
423 | ||
e31a1b66 BH |
424 | static __be32 |
425 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
426 | { | |
427 | DECODE_HEAD; | |
428 | ||
429 | READ_BUF(sizeof(stateid_t)); | |
430 | READ32(sid->si_generation); | |
431 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
432 | ||
433 | DECODE_TAIL; | |
434 | } | |
435 | ||
b37ad28b | 436 | static __be32 |
1da177e4 LT |
437 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
438 | { | |
439 | DECODE_HEAD; | |
440 | ||
441 | READ_BUF(4); | |
442 | READ32(access->ac_req_access); | |
443 | ||
444 | DECODE_TAIL; | |
445 | } | |
446 | ||
b37ad28b | 447 | static __be32 |
1da177e4 LT |
448 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
449 | { | |
450 | DECODE_HEAD; | |
451 | ||
452 | close->cl_stateowner = NULL; | |
e31a1b66 | 453 | READ_BUF(4); |
1da177e4 | 454 | READ32(close->cl_seqid); |
e31a1b66 | 455 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
1da177e4 LT |
456 | |
457 | DECODE_TAIL; | |
458 | } | |
459 | ||
460 | ||
b37ad28b | 461 | static __be32 |
1da177e4 LT |
462 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
463 | { | |
464 | DECODE_HEAD; | |
465 | ||
466 | READ_BUF(12); | |
467 | READ64(commit->co_offset); | |
468 | READ32(commit->co_count); | |
469 | ||
470 | DECODE_TAIL; | |
471 | } | |
472 | ||
b37ad28b | 473 | static __be32 |
1da177e4 LT |
474 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
475 | { | |
476 | DECODE_HEAD; | |
477 | ||
478 | READ_BUF(4); | |
479 | READ32(create->cr_type); | |
480 | switch (create->cr_type) { | |
481 | case NF4LNK: | |
482 | READ_BUF(4); | |
483 | READ32(create->cr_linklen); | |
484 | READ_BUF(create->cr_linklen); | |
485 | SAVEMEM(create->cr_linkname, create->cr_linklen); | |
486 | break; | |
487 | case NF4BLK: | |
488 | case NF4CHR: | |
489 | READ_BUF(8); | |
490 | READ32(create->cr_specdata1); | |
491 | READ32(create->cr_specdata2); | |
492 | break; | |
493 | case NF4SOCK: | |
494 | case NF4FIFO: | |
495 | case NF4DIR: | |
496 | default: | |
497 | break; | |
498 | } | |
499 | ||
500 | READ_BUF(4); | |
501 | READ32(create->cr_namelen); | |
502 | READ_BUF(create->cr_namelen); | |
503 | SAVEMEM(create->cr_name, create->cr_namelen); | |
504 | if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval))) | |
505 | return status; | |
506 | ||
c0d6fc8a BH |
507 | status = nfsd4_decode_fattr(argp, create->cr_bmval, nfsd_attrmask, |
508 | &create->cr_iattr, &create->cr_acl); | |
509 | if (status) | |
1da177e4 LT |
510 | goto out; |
511 | ||
512 | DECODE_TAIL; | |
513 | } | |
514 | ||
b37ad28b | 515 | static inline __be32 |
1da177e4 LT |
516 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
517 | { | |
e31a1b66 | 518 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
1da177e4 LT |
519 | } |
520 | ||
b37ad28b | 521 | static inline __be32 |
1da177e4 LT |
522 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
523 | { | |
524 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
525 | } | |
526 | ||
b37ad28b | 527 | static __be32 |
1da177e4 LT |
528 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
529 | { | |
530 | DECODE_HEAD; | |
531 | ||
532 | READ_BUF(4); | |
533 | READ32(link->li_namelen); | |
534 | READ_BUF(link->li_namelen); | |
535 | SAVEMEM(link->li_name, link->li_namelen); | |
536 | if ((status = check_filename(link->li_name, link->li_namelen, nfserr_inval))) | |
537 | return status; | |
538 | ||
539 | DECODE_TAIL; | |
540 | } | |
541 | ||
b37ad28b | 542 | static __be32 |
1da177e4 LT |
543 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
544 | { | |
545 | DECODE_HEAD; | |
546 | ||
3a65588a | 547 | lock->lk_replay_owner = NULL; |
1da177e4 LT |
548 | /* |
549 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
550 | */ | |
551 | READ_BUF(28); | |
552 | READ32(lock->lk_type); | |
553 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) | |
554 | goto xdr_error; | |
555 | READ32(lock->lk_reclaim); | |
556 | READ64(lock->lk_offset); | |
557 | READ64(lock->lk_length); | |
558 | READ32(lock->lk_is_new); | |
559 | ||
560 | if (lock->lk_is_new) { | |
e31a1b66 | 561 | READ_BUF(4); |
1da177e4 | 562 | READ32(lock->lk_new_open_seqid); |
e31a1b66 BH |
563 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
564 | if (status) | |
565 | return status; | |
566 | READ_BUF(8 + sizeof(clientid_t)); | |
1da177e4 LT |
567 | READ32(lock->lk_new_lock_seqid); |
568 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); | |
569 | READ32(lock->lk_new_owner.len); | |
570 | READ_BUF(lock->lk_new_owner.len); | |
571 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
572 | } else { | |
e31a1b66 BH |
573 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
574 | if (status) | |
575 | return status; | |
576 | READ_BUF(4); | |
1da177e4 LT |
577 | READ32(lock->lk_old_lock_seqid); |
578 | } | |
579 | ||
580 | DECODE_TAIL; | |
581 | } | |
582 | ||
b37ad28b | 583 | static __be32 |
1da177e4 LT |
584 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
585 | { | |
586 | DECODE_HEAD; | |
587 | ||
588 | READ_BUF(32); | |
589 | READ32(lockt->lt_type); | |
590 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) | |
591 | goto xdr_error; | |
592 | READ64(lockt->lt_offset); | |
593 | READ64(lockt->lt_length); | |
594 | COPYMEM(&lockt->lt_clientid, 8); | |
595 | READ32(lockt->lt_owner.len); | |
596 | READ_BUF(lockt->lt_owner.len); | |
597 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
598 | ||
60adfc50 AA |
599 | if (argp->minorversion && !zero_clientid(&lockt->lt_clientid)) |
600 | return nfserr_inval; | |
1da177e4 LT |
601 | DECODE_TAIL; |
602 | } | |
603 | ||
b37ad28b | 604 | static __be32 |
1da177e4 LT |
605 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
606 | { | |
607 | DECODE_HEAD; | |
608 | ||
609 | locku->lu_stateowner = NULL; | |
e31a1b66 | 610 | READ_BUF(8); |
1da177e4 LT |
611 | READ32(locku->lu_type); |
612 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) | |
613 | goto xdr_error; | |
614 | READ32(locku->lu_seqid); | |
e31a1b66 BH |
615 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
616 | if (status) | |
617 | return status; | |
618 | READ_BUF(16); | |
1da177e4 LT |
619 | READ64(locku->lu_offset); |
620 | READ64(locku->lu_length); | |
621 | ||
622 | DECODE_TAIL; | |
623 | } | |
624 | ||
b37ad28b | 625 | static __be32 |
1da177e4 LT |
626 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
627 | { | |
628 | DECODE_HEAD; | |
629 | ||
630 | READ_BUF(4); | |
631 | READ32(lookup->lo_len); | |
632 | READ_BUF(lookup->lo_len); | |
633 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
634 | if ((status = check_filename(lookup->lo_name, lookup->lo_len, nfserr_noent))) | |
635 | return status; | |
636 | ||
637 | DECODE_TAIL; | |
638 | } | |
639 | ||
b37ad28b | 640 | static __be32 |
1da177e4 LT |
641 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
642 | { | |
643 | DECODE_HEAD; | |
644 | ||
645 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
646 | open->op_iattr.ia_valid = 0; | |
647 | open->op_stateowner = NULL; | |
648 | ||
649 | /* seqid, share_access, share_deny, clientid, ownerlen */ | |
650 | READ_BUF(16 + sizeof(clientid_t)); | |
651 | READ32(open->op_seqid); | |
652 | READ32(open->op_share_access); | |
653 | READ32(open->op_share_deny); | |
654 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); | |
655 | READ32(open->op_owner.len); | |
656 | ||
657 | /* owner, open_flag */ | |
658 | READ_BUF(open->op_owner.len + 4); | |
659 | SAVEMEM(open->op_owner.data, open->op_owner.len); | |
660 | READ32(open->op_create); | |
661 | switch (open->op_create) { | |
662 | case NFS4_OPEN_NOCREATE: | |
663 | break; | |
664 | case NFS4_OPEN_CREATE: | |
665 | READ_BUF(4); | |
666 | READ32(open->op_createmode); | |
667 | switch (open->op_createmode) { | |
668 | case NFS4_CREATE_UNCHECKED: | |
669 | case NFS4_CREATE_GUARDED: | |
c0d6fc8a BH |
670 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
671 | nfsd_attrmask, &open->op_iattr, &open->op_acl); | |
672 | if (status) | |
1da177e4 LT |
673 | goto out; |
674 | break; | |
675 | case NFS4_CREATE_EXCLUSIVE: | |
676 | READ_BUF(8); | |
677 | COPYMEM(open->op_verf.data, 8); | |
678 | break; | |
679 | default: | |
680 | goto xdr_error; | |
681 | } | |
682 | break; | |
683 | default: | |
684 | goto xdr_error; | |
685 | } | |
686 | ||
687 | /* open_claim */ | |
688 | READ_BUF(4); | |
689 | READ32(open->op_claim_type); | |
690 | switch (open->op_claim_type) { | |
691 | case NFS4_OPEN_CLAIM_NULL: | |
692 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
693 | READ_BUF(4); | |
694 | READ32(open->op_fname.len); | |
695 | READ_BUF(open->op_fname.len); | |
696 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
697 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) | |
698 | return status; | |
699 | break; | |
700 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
701 | READ_BUF(4); | |
702 | READ32(open->op_delegate_type); | |
703 | break; | |
704 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
e31a1b66 BH |
705 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
706 | if (status) | |
707 | return status; | |
708 | READ_BUF(4); | |
1da177e4 LT |
709 | READ32(open->op_fname.len); |
710 | READ_BUF(open->op_fname.len); | |
711 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
712 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) | |
713 | return status; | |
714 | break; | |
715 | default: | |
716 | goto xdr_error; | |
717 | } | |
718 | ||
719 | DECODE_TAIL; | |
720 | } | |
721 | ||
b37ad28b | 722 | static __be32 |
1da177e4 LT |
723 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
724 | { | |
725 | DECODE_HEAD; | |
726 | ||
727 | open_conf->oc_stateowner = NULL; | |
e31a1b66 BH |
728 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
729 | if (status) | |
730 | return status; | |
731 | READ_BUF(4); | |
1da177e4 LT |
732 | READ32(open_conf->oc_seqid); |
733 | ||
734 | DECODE_TAIL; | |
735 | } | |
736 | ||
b37ad28b | 737 | static __be32 |
1da177e4 LT |
738 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
739 | { | |
740 | DECODE_HEAD; | |
741 | ||
742 | open_down->od_stateowner = NULL; | |
e31a1b66 BH |
743 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
744 | if (status) | |
745 | return status; | |
746 | READ_BUF(12); | |
1da177e4 LT |
747 | READ32(open_down->od_seqid); |
748 | READ32(open_down->od_share_access); | |
749 | READ32(open_down->od_share_deny); | |
750 | ||
751 | DECODE_TAIL; | |
752 | } | |
753 | ||
b37ad28b | 754 | static __be32 |
1da177e4 LT |
755 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
756 | { | |
757 | DECODE_HEAD; | |
758 | ||
759 | READ_BUF(4); | |
760 | READ32(putfh->pf_fhlen); | |
761 | if (putfh->pf_fhlen > NFS4_FHSIZE) | |
762 | goto xdr_error; | |
763 | READ_BUF(putfh->pf_fhlen); | |
764 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
765 | ||
766 | DECODE_TAIL; | |
767 | } | |
768 | ||
b37ad28b | 769 | static __be32 |
1da177e4 LT |
770 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
771 | { | |
772 | DECODE_HEAD; | |
773 | ||
e31a1b66 BH |
774 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
775 | if (status) | |
776 | return status; | |
777 | READ_BUF(12); | |
1da177e4 LT |
778 | READ64(read->rd_offset); |
779 | READ32(read->rd_length); | |
780 | ||
781 | DECODE_TAIL; | |
782 | } | |
783 | ||
b37ad28b | 784 | static __be32 |
1da177e4 LT |
785 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
786 | { | |
787 | DECODE_HEAD; | |
788 | ||
789 | READ_BUF(24); | |
790 | READ64(readdir->rd_cookie); | |
791 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); | |
792 | READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ | |
793 | READ32(readdir->rd_maxcount); | |
794 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) | |
795 | goto out; | |
796 | ||
797 | DECODE_TAIL; | |
798 | } | |
799 | ||
b37ad28b | 800 | static __be32 |
1da177e4 LT |
801 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
802 | { | |
803 | DECODE_HEAD; | |
804 | ||
805 | READ_BUF(4); | |
806 | READ32(remove->rm_namelen); | |
807 | READ_BUF(remove->rm_namelen); | |
808 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
809 | if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent))) | |
810 | return status; | |
811 | ||
812 | DECODE_TAIL; | |
813 | } | |
814 | ||
b37ad28b | 815 | static __be32 |
1da177e4 LT |
816 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
817 | { | |
818 | DECODE_HEAD; | |
819 | ||
820 | READ_BUF(4); | |
821 | READ32(rename->rn_snamelen); | |
822 | READ_BUF(rename->rn_snamelen + 4); | |
823 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); | |
824 | READ32(rename->rn_tnamelen); | |
825 | READ_BUF(rename->rn_tnamelen); | |
826 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
827 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent))) | |
828 | return status; | |
829 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval))) | |
830 | return status; | |
831 | ||
832 | DECODE_TAIL; | |
833 | } | |
834 | ||
b37ad28b | 835 | static __be32 |
1da177e4 LT |
836 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
837 | { | |
838 | DECODE_HEAD; | |
839 | ||
840 | READ_BUF(sizeof(clientid_t)); | |
841 | COPYMEM(clientid, sizeof(clientid_t)); | |
842 | ||
843 | DECODE_TAIL; | |
844 | } | |
845 | ||
dcb488a3 AA |
846 | static __be32 |
847 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
848 | struct nfsd4_secinfo *secinfo) | |
849 | { | |
850 | DECODE_HEAD; | |
851 | ||
852 | READ_BUF(4); | |
853 | READ32(secinfo->si_namelen); | |
854 | READ_BUF(secinfo->si_namelen); | |
855 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
856 | status = check_filename(secinfo->si_name, secinfo->si_namelen, | |
857 | nfserr_noent); | |
858 | if (status) | |
859 | return status; | |
860 | DECODE_TAIL; | |
861 | } | |
862 | ||
b37ad28b | 863 | static __be32 |
1da177e4 LT |
864 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
865 | { | |
e31a1b66 | 866 | __be32 status; |
1da177e4 | 867 | |
e31a1b66 BH |
868 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
869 | if (status) | |
870 | return status; | |
c0d6fc8a | 871 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, nfsd_attrmask, |
e31a1b66 | 872 | &setattr->sa_iattr, &setattr->sa_acl); |
1da177e4 LT |
873 | } |
874 | ||
b37ad28b | 875 | static __be32 |
1da177e4 LT |
876 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
877 | { | |
878 | DECODE_HEAD; | |
879 | ||
880 | READ_BUF(12); | |
881 | COPYMEM(setclientid->se_verf.data, 8); | |
882 | READ32(setclientid->se_namelen); | |
883 | ||
884 | READ_BUF(setclientid->se_namelen + 8); | |
885 | SAVEMEM(setclientid->se_name, setclientid->se_namelen); | |
886 | READ32(setclientid->se_callback_prog); | |
887 | READ32(setclientid->se_callback_netid_len); | |
888 | ||
889 | READ_BUF(setclientid->se_callback_netid_len + 4); | |
890 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); | |
891 | READ32(setclientid->se_callback_addr_len); | |
892 | ||
893 | READ_BUF(setclientid->se_callback_addr_len + 4); | |
894 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); | |
895 | READ32(setclientid->se_callback_ident); | |
896 | ||
897 | DECODE_TAIL; | |
898 | } | |
899 | ||
b37ad28b | 900 | static __be32 |
1da177e4 LT |
901 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
902 | { | |
903 | DECODE_HEAD; | |
904 | ||
905 | READ_BUF(8 + sizeof(nfs4_verifier)); | |
906 | COPYMEM(&scd_c->sc_clientid, 8); | |
907 | COPYMEM(&scd_c->sc_confirm, sizeof(nfs4_verifier)); | |
908 | ||
909 | DECODE_TAIL; | |
910 | } | |
911 | ||
912 | /* Also used for NVERIFY */ | |
b37ad28b | 913 | static __be32 |
1da177e4 LT |
914 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
915 | { | |
916 | #if 0 | |
917 | struct nfsd4_compoundargs save = { | |
918 | .p = argp->p, | |
919 | .end = argp->end, | |
920 | .rqstp = argp->rqstp, | |
921 | }; | |
922 | u32 ve_bmval[2]; | |
923 | struct iattr ve_iattr; /* request */ | |
924 | struct nfs4_acl *ve_acl; /* request */ | |
925 | #endif | |
926 | DECODE_HEAD; | |
927 | ||
928 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
929 | goto out; | |
930 | ||
931 | /* For convenience's sake, we compare raw xdr'd attributes in | |
932 | * nfsd4_proc_verify; however we still decode here just to return | |
933 | * correct error in case of bad xdr. */ | |
934 | #if 0 | |
935 | status = nfsd4_decode_fattr(ve_bmval, &ve_iattr, &ve_acl); | |
936 | if (status == nfserr_inval) { | |
937 | status = nfserrno(status); | |
938 | goto out; | |
939 | } | |
940 | #endif | |
941 | READ_BUF(4); | |
942 | READ32(verify->ve_attrlen); | |
943 | READ_BUF(verify->ve_attrlen); | |
944 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
945 | ||
946 | DECODE_TAIL; | |
947 | } | |
948 | ||
b37ad28b | 949 | static __be32 |
1da177e4 LT |
950 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
951 | { | |
952 | int avail; | |
953 | int v; | |
954 | int len; | |
955 | DECODE_HEAD; | |
956 | ||
e31a1b66 BH |
957 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
958 | if (status) | |
959 | return status; | |
960 | READ_BUF(16); | |
1da177e4 LT |
961 | READ64(write->wr_offset); |
962 | READ32(write->wr_stable_how); | |
963 | if (write->wr_stable_how > 2) | |
964 | goto xdr_error; | |
965 | READ32(write->wr_buflen); | |
966 | ||
967 | /* Sorry .. no magic macros for this.. * | |
968 | * READ_BUF(write->wr_buflen); | |
969 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
970 | */ | |
971 | avail = (char*)argp->end - (char*)argp->p; | |
972 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
973 | dprintk("NFSD: xdr error (%s:%d)\n", |
974 | __FILE__, __LINE__); | |
1da177e4 LT |
975 | goto xdr_error; |
976 | } | |
3cc03b16 N |
977 | argp->rqstp->rq_vec[0].iov_base = p; |
978 | argp->rqstp->rq_vec[0].iov_len = avail; | |
1da177e4 LT |
979 | v = 0; |
980 | len = write->wr_buflen; | |
3cc03b16 N |
981 | while (len > argp->rqstp->rq_vec[v].iov_len) { |
982 | len -= argp->rqstp->rq_vec[v].iov_len; | |
1da177e4 | 983 | v++; |
3cc03b16 | 984 | argp->rqstp->rq_vec[v].iov_base = page_address(argp->pagelist[0]); |
1da177e4 LT |
985 | argp->pagelist++; |
986 | if (argp->pagelen >= PAGE_SIZE) { | |
3cc03b16 | 987 | argp->rqstp->rq_vec[v].iov_len = PAGE_SIZE; |
1da177e4 LT |
988 | argp->pagelen -= PAGE_SIZE; |
989 | } else { | |
3cc03b16 | 990 | argp->rqstp->rq_vec[v].iov_len = argp->pagelen; |
1da177e4 LT |
991 | argp->pagelen -= len; |
992 | } | |
993 | } | |
2ebbc012 AV |
994 | argp->end = (__be32*) (argp->rqstp->rq_vec[v].iov_base + argp->rqstp->rq_vec[v].iov_len); |
995 | argp->p = (__be32*) (argp->rqstp->rq_vec[v].iov_base + (XDR_QUADLEN(len) << 2)); | |
3cc03b16 | 996 | argp->rqstp->rq_vec[v].iov_len = len; |
1da177e4 LT |
997 | write->wr_vlen = v+1; |
998 | ||
999 | DECODE_TAIL; | |
1000 | } | |
1001 | ||
b37ad28b | 1002 | static __be32 |
1da177e4 LT |
1003 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
1004 | { | |
1005 | DECODE_HEAD; | |
1006 | ||
1007 | READ_BUF(12); | |
1008 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
1009 | READ32(rlockowner->rl_owner.len); | |
1010 | READ_BUF(rlockowner->rl_owner.len); | |
1011 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
1012 | ||
60adfc50 AA |
1013 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1014 | return nfserr_inval; | |
1da177e4 LT |
1015 | DECODE_TAIL; |
1016 | } | |
1017 | ||
2db134eb AA |
1018 | static __be32 |
1019 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1020 | struct nfsd4_exchange_id *exid) |
2db134eb | 1021 | { |
0733d213 AA |
1022 | int dummy; |
1023 | DECODE_HEAD; | |
1024 | ||
1025 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1026 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1027 | ||
1028 | READ_BUF(4); | |
1029 | READ32(exid->clname.len); | |
1030 | ||
1031 | READ_BUF(exid->clname.len); | |
1032 | SAVEMEM(exid->clname.data, exid->clname.len); | |
1033 | ||
1034 | READ_BUF(4); | |
1035 | READ32(exid->flags); | |
1036 | ||
1037 | /* Ignore state_protect4_a */ | |
1038 | READ_BUF(4); | |
1039 | READ32(exid->spa_how); | |
1040 | switch (exid->spa_how) { | |
1041 | case SP4_NONE: | |
1042 | break; | |
1043 | case SP4_MACH_CRED: | |
1044 | /* spo_must_enforce */ | |
1045 | READ_BUF(4); | |
1046 | READ32(dummy); | |
1047 | READ_BUF(dummy * 4); | |
1048 | p += dummy; | |
1049 | ||
1050 | /* spo_must_allow */ | |
1051 | READ_BUF(4); | |
1052 | READ32(dummy); | |
1053 | READ_BUF(dummy * 4); | |
1054 | p += dummy; | |
1055 | break; | |
1056 | case SP4_SSV: | |
1057 | /* ssp_ops */ | |
1058 | READ_BUF(4); | |
1059 | READ32(dummy); | |
1060 | READ_BUF(dummy * 4); | |
1061 | p += dummy; | |
1062 | ||
1063 | READ_BUF(4); | |
1064 | READ32(dummy); | |
1065 | READ_BUF(dummy * 4); | |
1066 | p += dummy; | |
1067 | ||
1068 | /* ssp_hash_algs<> */ | |
1069 | READ_BUF(4); | |
1070 | READ32(dummy); | |
1071 | READ_BUF(dummy); | |
1072 | p += XDR_QUADLEN(dummy); | |
1073 | ||
1074 | /* ssp_encr_algs<> */ | |
1075 | READ_BUF(4); | |
1076 | READ32(dummy); | |
1077 | READ_BUF(dummy); | |
1078 | p += XDR_QUADLEN(dummy); | |
1079 | ||
1080 | /* ssp_window and ssp_num_gss_handles */ | |
1081 | READ_BUF(8); | |
1082 | READ32(dummy); | |
1083 | READ32(dummy); | |
1084 | break; | |
1085 | default: | |
1086 | goto xdr_error; | |
1087 | } | |
1088 | ||
1089 | /* Ignore Implementation ID */ | |
1090 | READ_BUF(4); /* nfs_impl_id4 array length */ | |
1091 | READ32(dummy); | |
1092 | ||
1093 | if (dummy > 1) | |
1094 | goto xdr_error; | |
1095 | ||
1096 | if (dummy == 1) { | |
1097 | /* nii_domain */ | |
1098 | READ_BUF(4); | |
1099 | READ32(dummy); | |
1100 | READ_BUF(dummy); | |
1101 | p += XDR_QUADLEN(dummy); | |
1102 | ||
1103 | /* nii_name */ | |
1104 | READ_BUF(4); | |
1105 | READ32(dummy); | |
1106 | READ_BUF(dummy); | |
1107 | p += XDR_QUADLEN(dummy); | |
1108 | ||
1109 | /* nii_date */ | |
1110 | READ_BUF(12); | |
1111 | p += 3; | |
1112 | } | |
1113 | DECODE_TAIL; | |
2db134eb AA |
1114 | } |
1115 | ||
1116 | static __be32 | |
1117 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1118 | struct nfsd4_create_session *sess) | |
1119 | { | |
ec6b5d7b AA |
1120 | DECODE_HEAD; |
1121 | ||
1122 | u32 dummy; | |
1123 | char *machine_name; | |
1124 | int i; | |
1125 | int nr_secflavs; | |
1126 | ||
1127 | READ_BUF(16); | |
1128 | COPYMEM(&sess->clientid, 8); | |
1129 | READ32(sess->seqid); | |
1130 | READ32(sess->flags); | |
1131 | ||
1132 | /* Fore channel attrs */ | |
1133 | READ_BUF(28); | |
1134 | READ32(dummy); /* headerpadsz is always 0 */ | |
1135 | READ32(sess->fore_channel.maxreq_sz); | |
1136 | READ32(sess->fore_channel.maxresp_sz); | |
1137 | READ32(sess->fore_channel.maxresp_cached); | |
1138 | READ32(sess->fore_channel.maxops); | |
1139 | READ32(sess->fore_channel.maxreqs); | |
1140 | READ32(sess->fore_channel.nr_rdma_attrs); | |
1141 | if (sess->fore_channel.nr_rdma_attrs == 1) { | |
1142 | READ_BUF(4); | |
1143 | READ32(sess->fore_channel.rdma_attrs); | |
1144 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { | |
1145 | dprintk("Too many fore channel attr bitmaps!\n"); | |
1146 | goto xdr_error; | |
1147 | } | |
1148 | ||
1149 | /* Back channel attrs */ | |
1150 | READ_BUF(28); | |
1151 | READ32(dummy); /* headerpadsz is always 0 */ | |
1152 | READ32(sess->back_channel.maxreq_sz); | |
1153 | READ32(sess->back_channel.maxresp_sz); | |
1154 | READ32(sess->back_channel.maxresp_cached); | |
1155 | READ32(sess->back_channel.maxops); | |
1156 | READ32(sess->back_channel.maxreqs); | |
1157 | READ32(sess->back_channel.nr_rdma_attrs); | |
1158 | if (sess->back_channel.nr_rdma_attrs == 1) { | |
1159 | READ_BUF(4); | |
1160 | READ32(sess->back_channel.rdma_attrs); | |
1161 | } else if (sess->back_channel.nr_rdma_attrs > 1) { | |
1162 | dprintk("Too many back channel attr bitmaps!\n"); | |
1163 | goto xdr_error; | |
1164 | } | |
1165 | ||
1166 | READ_BUF(8); | |
1167 | READ32(sess->callback_prog); | |
1168 | ||
1169 | /* callback_sec_params4 */ | |
1170 | READ32(nr_secflavs); | |
1171 | for (i = 0; i < nr_secflavs; ++i) { | |
1172 | READ_BUF(4); | |
1173 | READ32(dummy); | |
1174 | switch (dummy) { | |
1175 | case RPC_AUTH_NULL: | |
1176 | /* Nothing to read */ | |
1177 | break; | |
1178 | case RPC_AUTH_UNIX: | |
1179 | READ_BUF(8); | |
1180 | /* stamp */ | |
1181 | READ32(dummy); | |
1182 | ||
1183 | /* machine name */ | |
1184 | READ32(dummy); | |
1185 | READ_BUF(dummy); | |
1186 | SAVEMEM(machine_name, dummy); | |
1187 | ||
1188 | /* uid, gid */ | |
1189 | READ_BUF(8); | |
1190 | READ32(sess->uid); | |
1191 | READ32(sess->gid); | |
1192 | ||
1193 | /* more gids */ | |
1194 | READ_BUF(4); | |
1195 | READ32(dummy); | |
1196 | READ_BUF(dummy * 4); | |
1197 | for (i = 0; i < dummy; ++i) | |
1198 | READ32(dummy); | |
1199 | break; | |
1200 | case RPC_AUTH_GSS: | |
1201 | dprintk("RPC_AUTH_GSS callback secflavor " | |
1202 | "not supported!\n"); | |
1203 | READ_BUF(8); | |
1204 | /* gcbp_service */ | |
1205 | READ32(dummy); | |
1206 | /* gcbp_handle_from_server */ | |
1207 | READ32(dummy); | |
1208 | READ_BUF(dummy); | |
1209 | p += XDR_QUADLEN(dummy); | |
1210 | /* gcbp_handle_from_client */ | |
1211 | READ_BUF(4); | |
1212 | READ32(dummy); | |
1213 | READ_BUF(dummy); | |
1214 | p += XDR_QUADLEN(dummy); | |
1215 | break; | |
1216 | default: | |
1217 | dprintk("Illegal callback secflavor\n"); | |
1218 | return nfserr_inval; | |
1219 | } | |
1220 | } | |
1221 | DECODE_TAIL; | |
2db134eb AA |
1222 | } |
1223 | ||
1224 | static __be32 | |
1225 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, | |
1226 | struct nfsd4_destroy_session *destroy_session) | |
1227 | { | |
e10e0cfc BH |
1228 | DECODE_HEAD; |
1229 | READ_BUF(NFS4_MAX_SESSIONID_LEN); | |
1230 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1231 | ||
1232 | DECODE_TAIL; | |
2db134eb AA |
1233 | } |
1234 | ||
1235 | static __be32 | |
1236 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, | |
1237 | struct nfsd4_sequence *seq) | |
1238 | { | |
b85d4c01 BH |
1239 | DECODE_HEAD; |
1240 | ||
1241 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); | |
1242 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1243 | READ32(seq->seqid); | |
1244 | READ32(seq->slotid); | |
1245 | READ32(seq->maxslots); | |
1246 | READ32(seq->cachethis); | |
1247 | ||
1248 | DECODE_TAIL; | |
2db134eb AA |
1249 | } |
1250 | ||
347e0ad9 BH |
1251 | static __be32 |
1252 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1253 | { | |
1254 | return nfs_ok; | |
1255 | } | |
1256 | ||
3c375c6f BH |
1257 | static __be32 |
1258 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1259 | { | |
1e685ec2 | 1260 | return nfserr_notsupp; |
3c375c6f BH |
1261 | } |
1262 | ||
347e0ad9 BH |
1263 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1264 | ||
1265 | static nfsd4_dec nfsd4_dec_ops[] = { | |
ad1060c8 BF |
1266 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1267 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1268 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1269 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1270 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1271 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1272 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1273 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1274 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1275 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1276 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1277 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1278 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1279 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1280 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1281 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1282 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1283 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1284 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1285 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
a1c8c4d1 | 1286 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_noop, |
ad1060c8 BF |
1287 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1288 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1289 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1290 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1291 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1292 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1293 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1294 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1295 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1296 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1297 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1298 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1299 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1300 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1301 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1302 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
347e0ad9 BH |
1303 | }; |
1304 | ||
2db134eb AA |
1305 | static nfsd4_dec nfsd41_dec_ops[] = { |
1306 | [OP_ACCESS] (nfsd4_dec)nfsd4_decode_access, | |
1307 | [OP_CLOSE] (nfsd4_dec)nfsd4_decode_close, | |
1308 | [OP_COMMIT] (nfsd4_dec)nfsd4_decode_commit, | |
1309 | [OP_CREATE] (nfsd4_dec)nfsd4_decode_create, | |
1310 | [OP_DELEGPURGE] (nfsd4_dec)nfsd4_decode_notsupp, | |
1311 | [OP_DELEGRETURN] (nfsd4_dec)nfsd4_decode_delegreturn, | |
1312 | [OP_GETATTR] (nfsd4_dec)nfsd4_decode_getattr, | |
1313 | [OP_GETFH] (nfsd4_dec)nfsd4_decode_noop, | |
1314 | [OP_LINK] (nfsd4_dec)nfsd4_decode_link, | |
1315 | [OP_LOCK] (nfsd4_dec)nfsd4_decode_lock, | |
1316 | [OP_LOCKT] (nfsd4_dec)nfsd4_decode_lockt, | |
1317 | [OP_LOCKU] (nfsd4_dec)nfsd4_decode_locku, | |
1318 | [OP_LOOKUP] (nfsd4_dec)nfsd4_decode_lookup, | |
1319 | [OP_LOOKUPP] (nfsd4_dec)nfsd4_decode_noop, | |
1320 | [OP_NVERIFY] (nfsd4_dec)nfsd4_decode_verify, | |
1321 | [OP_OPEN] (nfsd4_dec)nfsd4_decode_open, | |
1322 | [OP_OPENATTR] (nfsd4_dec)nfsd4_decode_notsupp, | |
1323 | [OP_OPEN_CONFIRM] (nfsd4_dec)nfsd4_decode_notsupp, | |
1324 | [OP_OPEN_DOWNGRADE] (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1325 | [OP_PUTFH] (nfsd4_dec)nfsd4_decode_putfh, | |
1326 | [OP_PUTPUBFH] (nfsd4_dec)nfsd4_decode_notsupp, | |
1327 | [OP_PUTROOTFH] (nfsd4_dec)nfsd4_decode_noop, | |
1328 | [OP_READ] (nfsd4_dec)nfsd4_decode_read, | |
1329 | [OP_READDIR] (nfsd4_dec)nfsd4_decode_readdir, | |
1330 | [OP_READLINK] (nfsd4_dec)nfsd4_decode_noop, | |
1331 | [OP_REMOVE] (nfsd4_dec)nfsd4_decode_remove, | |
1332 | [OP_RENAME] (nfsd4_dec)nfsd4_decode_rename, | |
1333 | [OP_RENEW] (nfsd4_dec)nfsd4_decode_notsupp, | |
1334 | [OP_RESTOREFH] (nfsd4_dec)nfsd4_decode_noop, | |
1335 | [OP_SAVEFH] (nfsd4_dec)nfsd4_decode_noop, | |
1336 | [OP_SECINFO] (nfsd4_dec)nfsd4_decode_secinfo, | |
1337 | [OP_SETATTR] (nfsd4_dec)nfsd4_decode_setattr, | |
1338 | [OP_SETCLIENTID] (nfsd4_dec)nfsd4_decode_notsupp, | |
1339 | [OP_SETCLIENTID_CONFIRM](nfsd4_dec)nfsd4_decode_notsupp, | |
1340 | [OP_VERIFY] (nfsd4_dec)nfsd4_decode_verify, | |
1341 | [OP_WRITE] (nfsd4_dec)nfsd4_decode_write, | |
1342 | [OP_RELEASE_LOCKOWNER] (nfsd4_dec)nfsd4_decode_notsupp, | |
1343 | ||
1344 | /* new operations for NFSv4.1 */ | |
1345 | [OP_BACKCHANNEL_CTL] (nfsd4_dec)nfsd4_decode_notsupp, | |
1346 | [OP_BIND_CONN_TO_SESSION](nfsd4_dec)nfsd4_decode_notsupp, | |
1347 | [OP_EXCHANGE_ID] (nfsd4_dec)nfsd4_decode_exchange_id, | |
1348 | [OP_CREATE_SESSION] (nfsd4_dec)nfsd4_decode_create_session, | |
1349 | [OP_DESTROY_SESSION] (nfsd4_dec)nfsd4_decode_destroy_session, | |
1350 | [OP_FREE_STATEID] (nfsd4_dec)nfsd4_decode_notsupp, | |
1351 | [OP_GET_DIR_DELEGATION] (nfsd4_dec)nfsd4_decode_notsupp, | |
1352 | [OP_GETDEVICEINFO] (nfsd4_dec)nfsd4_decode_notsupp, | |
1353 | [OP_GETDEVICELIST] (nfsd4_dec)nfsd4_decode_notsupp, | |
1354 | [OP_LAYOUTCOMMIT] (nfsd4_dec)nfsd4_decode_notsupp, | |
1355 | [OP_LAYOUTGET] (nfsd4_dec)nfsd4_decode_notsupp, | |
1356 | [OP_LAYOUTRETURN] (nfsd4_dec)nfsd4_decode_notsupp, | |
1357 | [OP_SECINFO_NO_NAME] (nfsd4_dec)nfsd4_decode_notsupp, | |
1358 | [OP_SEQUENCE] (nfsd4_dec)nfsd4_decode_sequence, | |
1359 | [OP_SET_SSV] (nfsd4_dec)nfsd4_decode_notsupp, | |
1360 | [OP_TEST_STATEID] (nfsd4_dec)nfsd4_decode_notsupp, | |
1361 | [OP_WANT_DELEGATION] (nfsd4_dec)nfsd4_decode_notsupp, | |
1362 | [OP_DESTROY_CLIENTID] (nfsd4_dec)nfsd4_decode_notsupp, | |
1363 | [OP_RECLAIM_COMPLETE] (nfsd4_dec)nfsd4_decode_notsupp, | |
1364 | }; | |
1365 | ||
f2feb96b BH |
1366 | struct nfsd4_minorversion_ops { |
1367 | nfsd4_dec *decoders; | |
1368 | int nops; | |
1369 | }; | |
1370 | ||
1371 | static struct nfsd4_minorversion_ops nfsd4_minorversion[] = { | |
ad1060c8 | 1372 | [0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) }, |
2db134eb | 1373 | [1] = { nfsd41_dec_ops, ARRAY_SIZE(nfsd41_dec_ops) }, |
f2feb96b BH |
1374 | }; |
1375 | ||
b37ad28b | 1376 | static __be32 |
1da177e4 LT |
1377 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1378 | { | |
1379 | DECODE_HEAD; | |
1380 | struct nfsd4_op *op; | |
f2feb96b | 1381 | struct nfsd4_minorversion_ops *ops; |
1da177e4 LT |
1382 | int i; |
1383 | ||
1384 | /* | |
1385 | * XXX: According to spec, we should check the tag | |
1386 | * for UTF-8 compliance. I'm postponing this for | |
1387 | * now because it seems that some clients do use | |
1388 | * binary tags. | |
1389 | */ | |
1390 | READ_BUF(4); | |
1391 | READ32(argp->taglen); | |
1392 | READ_BUF(argp->taglen + 8); | |
1393 | SAVEMEM(argp->tag, argp->taglen); | |
1394 | READ32(argp->minorversion); | |
1395 | READ32(argp->opcnt); | |
1396 | ||
1397 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1398 | goto xdr_error; | |
1399 | if (argp->opcnt > 100) | |
1400 | goto xdr_error; | |
1401 | ||
e8c96f8c | 1402 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
1da177e4 LT |
1403 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1404 | if (!argp->ops) { | |
1405 | argp->ops = argp->iops; | |
817cb9d4 | 1406 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1407 | goto xdr_error; |
1408 | } | |
1409 | } | |
1410 | ||
f2feb96b | 1411 | if (argp->minorversion >= ARRAY_SIZE(nfsd4_minorversion)) |
30cff1ff BH |
1412 | argp->opcnt = 0; |
1413 | ||
f2feb96b | 1414 | ops = &nfsd4_minorversion[argp->minorversion]; |
1da177e4 LT |
1415 | for (i = 0; i < argp->opcnt; i++) { |
1416 | op = &argp->ops[i]; | |
1417 | op->replay = NULL; | |
1418 | ||
1419 | /* | |
1420 | * We can't use READ_BUF() here because we need to handle | |
1421 | * a missing opcode as an OP_WRITE + 1. So we need to check | |
1422 | * to see if we're truly at the end of our buffer or if there | |
1423 | * is another page we need to flip to. | |
1424 | */ | |
1425 | ||
1426 | if (argp->p == argp->end) { | |
1427 | if (argp->pagelen < 4) { | |
1428 | /* There isn't an opcode still on the wire */ | |
1429 | op->opnum = OP_WRITE + 1; | |
1430 | op->status = nfserr_bad_xdr; | |
1431 | argp->opcnt = i+1; | |
1432 | break; | |
1433 | } | |
1434 | ||
1435 | /* | |
1436 | * False alarm. We just hit a page boundary, but there | |
1437 | * is still data available. Move pointer across page | |
1438 | * boundary. *snip from READ_BUF* | |
1439 | */ | |
1440 | argp->p = page_address(argp->pagelist[0]); | |
1441 | argp->pagelist++; | |
1442 | if (argp->pagelen < PAGE_SIZE) { | |
1443 | argp->end = p + (argp->pagelen>>2); | |
1444 | argp->pagelen = 0; | |
1445 | } else { | |
1446 | argp->end = p + (PAGE_SIZE>>2); | |
1447 | argp->pagelen -= PAGE_SIZE; | |
1448 | } | |
1449 | } | |
1450 | op->opnum = ntohl(*argp->p++); | |
1451 | ||
f2feb96b BH |
1452 | if (op->opnum >= OP_ACCESS && op->opnum < ops->nops) |
1453 | op->status = ops->decoders[op->opnum](argp, &op->u); | |
347e0ad9 | 1454 | else { |
1da177e4 LT |
1455 | op->opnum = OP_ILLEGAL; |
1456 | op->status = nfserr_op_illegal; | |
1da177e4 LT |
1457 | } |
1458 | ||
1459 | if (op->status) { | |
1460 | argp->opcnt = i+1; | |
1461 | break; | |
1462 | } | |
1463 | } | |
1464 | ||
1465 | DECODE_TAIL; | |
1466 | } | |
1467 | /* | |
1468 | * END OF "GENERIC" DECODE ROUTINES. | |
1469 | */ | |
1470 | ||
1471 | /* | |
1472 | * START OF "GENERIC" ENCODE ROUTINES. | |
1473 | * These may look a little ugly since they are imported from a "generic" | |
1474 | * set of XDR encode/decode routines which are intended to be shared by | |
1475 | * all of our NFSv4 implementations (OpenBSD, MacOS X...). | |
1476 | * | |
1477 | * If the pain of reading these is too great, it should be a straightforward | |
1478 | * task to translate them into Linux-specific versions which are more | |
1479 | * consistent with the style used in NFSv2/v3... | |
1480 | */ | |
2ebbc012 | 1481 | #define ENCODE_HEAD __be32 *p |
1da177e4 LT |
1482 | |
1483 | #define WRITE32(n) *p++ = htonl(n) | |
1484 | #define WRITE64(n) do { \ | |
1485 | *p++ = htonl((u32)((n) >> 32)); \ | |
1486 | *p++ = htonl((u32)(n)); \ | |
1487 | } while (0) | |
5108b276 | 1488 | #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \ |
1da177e4 LT |
1489 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ |
1490 | memcpy(p, ptr, nbytes); \ | |
1491 | p += XDR_QUADLEN(nbytes); \ | |
5108b276 | 1492 | }} while (0) |
1da177e4 LT |
1493 | #define WRITECINFO(c) do { \ |
1494 | *p++ = htonl(c.atomic); \ | |
1495 | *p++ = htonl(c.before_ctime_sec); \ | |
1496 | *p++ = htonl(c.before_ctime_nsec); \ | |
1497 | *p++ = htonl(c.after_ctime_sec); \ | |
1498 | *p++ = htonl(c.after_ctime_nsec); \ | |
1499 | } while (0) | |
1500 | ||
1501 | #define RESERVE_SPACE(nbytes) do { \ | |
1502 | p = resp->p; \ | |
1503 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ | |
1504 | } while (0) | |
1505 | #define ADJUST_ARGS() resp->p = p | |
1506 | ||
1507 | /* | |
1508 | * Header routine to setup seqid operation replay cache | |
1509 | */ | |
1510 | #define ENCODE_SEQID_OP_HEAD \ | |
2ebbc012 | 1511 | __be32 *save; \ |
1da177e4 LT |
1512 | \ |
1513 | save = resp->p; | |
1514 | ||
1515 | /* | |
7fb64cee N |
1516 | * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This |
1517 | * is where sequence id's are incremented, and the replay cache is filled. | |
1518 | * Note that we increment sequence id's here, at the last moment, so we're sure | |
1519 | * we know whether the error to be returned is a sequence id mutating error. | |
1da177e4 LT |
1520 | */ |
1521 | ||
1522 | #define ENCODE_SEQID_OP_TAIL(stateowner) do { \ | |
1523 | if (seqid_mutating_err(nfserr) && stateowner) { \ | |
bd9aac52 | 1524 | stateowner->so_seqid++; \ |
1da177e4 LT |
1525 | stateowner->so_replay.rp_status = nfserr; \ |
1526 | stateowner->so_replay.rp_buflen = \ | |
1527 | (((char *)(resp)->p - (char *)save)); \ | |
1528 | memcpy(stateowner->so_replay.rp_buf, save, \ | |
1529 | stateowner->so_replay.rp_buflen); \ | |
1530 | } } while (0); | |
1531 | ||
81c3f413 BF |
1532 | /* Encode as an array of strings the string given with components |
1533 | * seperated @sep. | |
1534 | */ | |
b37ad28b | 1535 | static __be32 nfsd4_encode_components(char sep, char *components, |
2ebbc012 | 1536 | __be32 **pp, int *buflen) |
81c3f413 | 1537 | { |
2ebbc012 AV |
1538 | __be32 *p = *pp; |
1539 | __be32 *countp = p; | |
81c3f413 BF |
1540 | int strlen, count=0; |
1541 | char *str, *end; | |
1542 | ||
1543 | dprintk("nfsd4_encode_components(%s)\n", components); | |
1544 | if ((*buflen -= 4) < 0) | |
1545 | return nfserr_resource; | |
1546 | WRITE32(0); /* We will fill this in with @count later */ | |
1547 | end = str = components; | |
1548 | while (*end) { | |
1549 | for (; *end && (*end != sep); end++) | |
1550 | ; /* Point to end of component */ | |
1551 | strlen = end - str; | |
1552 | if (strlen) { | |
1553 | if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0) | |
1554 | return nfserr_resource; | |
1555 | WRITE32(strlen); | |
1556 | WRITEMEM(str, strlen); | |
1557 | count++; | |
1558 | } | |
1559 | else | |
1560 | end++; | |
1561 | str = end; | |
1562 | } | |
1563 | *pp = p; | |
1564 | p = countp; | |
1565 | WRITE32(count); | |
1566 | return 0; | |
1567 | } | |
1568 | ||
1569 | /* | |
1570 | * encode a location element of a fs_locations structure | |
1571 | */ | |
b37ad28b | 1572 | static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location, |
2ebbc012 | 1573 | __be32 **pp, int *buflen) |
81c3f413 | 1574 | { |
b37ad28b | 1575 | __be32 status; |
2ebbc012 | 1576 | __be32 *p = *pp; |
81c3f413 BF |
1577 | |
1578 | status = nfsd4_encode_components(':', location->hosts, &p, buflen); | |
1579 | if (status) | |
1580 | return status; | |
1581 | status = nfsd4_encode_components('/', location->path, &p, buflen); | |
1582 | if (status) | |
1583 | return status; | |
1584 | *pp = p; | |
1585 | return 0; | |
1586 | } | |
1587 | ||
1588 | /* | |
1589 | * Return the path to an export point in the pseudo filesystem namespace | |
1590 | * Returned string is safe to use as long as the caller holds a reference | |
1591 | * to @exp. | |
1592 | */ | |
b37ad28b | 1593 | static char *nfsd4_path(struct svc_rqst *rqstp, struct svc_export *exp, __be32 *stat) |
81c3f413 BF |
1594 | { |
1595 | struct svc_fh tmp_fh; | |
1596 | char *path, *rootpath; | |
81c3f413 BF |
1597 | |
1598 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
df547efb | 1599 | *stat = exp_pseudoroot(rqstp, &tmp_fh); |
cc45f017 AV |
1600 | if (*stat) |
1601 | return NULL; | |
54775491 | 1602 | rootpath = tmp_fh.fh_export->ex_pathname; |
81c3f413 | 1603 | |
54775491 | 1604 | path = exp->ex_pathname; |
81c3f413 BF |
1605 | |
1606 | if (strncmp(path, rootpath, strlen(rootpath))) { | |
817cb9d4 | 1607 | dprintk("nfsd: fs_locations failed;" |
81c3f413 | 1608 | "%s is not contained in %s\n", path, rootpath); |
cc45f017 AV |
1609 | *stat = nfserr_notsupp; |
1610 | return NULL; | |
81c3f413 BF |
1611 | } |
1612 | ||
1613 | return path + strlen(rootpath); | |
1614 | } | |
1615 | ||
1616 | /* | |
1617 | * encode a fs_locations structure | |
1618 | */ | |
b37ad28b | 1619 | static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp, |
81c3f413 | 1620 | struct svc_export *exp, |
2ebbc012 | 1621 | __be32 **pp, int *buflen) |
81c3f413 | 1622 | { |
b37ad28b | 1623 | __be32 status; |
cc45f017 | 1624 | int i; |
2ebbc012 | 1625 | __be32 *p = *pp; |
81c3f413 | 1626 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
cc45f017 | 1627 | char *root = nfsd4_path(rqstp, exp, &status); |
81c3f413 | 1628 | |
cc45f017 AV |
1629 | if (status) |
1630 | return status; | |
81c3f413 BF |
1631 | status = nfsd4_encode_components('/', root, &p, buflen); |
1632 | if (status) | |
1633 | return status; | |
1634 | if ((*buflen -= 4) < 0) | |
1635 | return nfserr_resource; | |
1636 | WRITE32(fslocs->locations_count); | |
1637 | for (i=0; i<fslocs->locations_count; i++) { | |
1638 | status = nfsd4_encode_fs_location4(&fslocs->locations[i], | |
1639 | &p, buflen); | |
1640 | if (status) | |
1641 | return status; | |
1642 | } | |
1643 | *pp = p; | |
1644 | return 0; | |
1645 | } | |
1da177e4 LT |
1646 | |
1647 | static u32 nfs4_ftypes[16] = { | |
1648 | NF4BAD, NF4FIFO, NF4CHR, NF4BAD, | |
1649 | NF4DIR, NF4BAD, NF4BLK, NF4BAD, | |
1650 | NF4REG, NF4BAD, NF4LNK, NF4BAD, | |
1651 | NF4SOCK, NF4BAD, NF4LNK, NF4BAD, | |
1652 | }; | |
1653 | ||
b37ad28b | 1654 | static __be32 |
1da177e4 | 1655 | nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
2ebbc012 | 1656 | __be32 **p, int *buflen) |
1da177e4 LT |
1657 | { |
1658 | int status; | |
1659 | ||
1660 | if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) | |
1661 | return nfserr_resource; | |
1662 | if (whotype != NFS4_ACL_WHO_NAMED) | |
1663 | status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); | |
1664 | else if (group) | |
1665 | status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1666 | else | |
1667 | status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1668 | if (status < 0) | |
1669 | return nfserrno(status); | |
1670 | *p = xdr_encode_opaque(*p, NULL, status); | |
1671 | *buflen -= (XDR_QUADLEN(status) << 2) + 4; | |
1672 | BUG_ON(*buflen < 0); | |
1673 | return 0; | |
1674 | } | |
1675 | ||
b37ad28b | 1676 | static inline __be32 |
2ebbc012 | 1677 | nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, __be32 **p, int *buflen) |
1da177e4 LT |
1678 | { |
1679 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen); | |
1680 | } | |
1681 | ||
b37ad28b | 1682 | static inline __be32 |
2ebbc012 | 1683 | nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, __be32 **p, int *buflen) |
1da177e4 LT |
1684 | { |
1685 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen); | |
1686 | } | |
1687 | ||
b37ad28b | 1688 | static inline __be32 |
1da177e4 | 1689 | nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
2ebbc012 | 1690 | __be32 **p, int *buflen) |
1da177e4 LT |
1691 | { |
1692 | return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen); | |
1693 | } | |
1694 | ||
42ca0993 BF |
1695 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
1696 | FATTR4_WORD0_RDATTR_ERROR) | |
1697 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
1698 | ||
b37ad28b | 1699 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
42ca0993 BF |
1700 | { |
1701 | /* As per referral draft: */ | |
1702 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
1703 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
1704 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
1705 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
1706 | *rdattr_err = NFSERR_MOVED; | |
1707 | else | |
1708 | return nfserr_moved; | |
1709 | } | |
1710 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
1711 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
1712 | return 0; | |
1713 | } | |
1da177e4 LT |
1714 | |
1715 | /* | |
1716 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
1717 | * ourselves. | |
1718 | * | |
1719 | * @countp is the buffer size in _words_; upon successful return this becomes | |
1720 | * replaced with the number of words written. | |
1721 | */ | |
b37ad28b | 1722 | __be32 |
1da177e4 | 1723 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, |
2ebbc012 | 1724 | struct dentry *dentry, __be32 *buffer, int *countp, u32 *bmval, |
406a7ea9 | 1725 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
1726 | { |
1727 | u32 bmval0 = bmval[0]; | |
1728 | u32 bmval1 = bmval[1]; | |
1729 | struct kstat stat; | |
1730 | struct svc_fh tempfh; | |
1731 | struct kstatfs statfs; | |
1732 | int buflen = *countp << 2; | |
2ebbc012 | 1733 | __be32 *attrlenp; |
1da177e4 LT |
1734 | u32 dummy; |
1735 | u64 dummy64; | |
42ca0993 | 1736 | u32 rdattr_err = 0; |
2ebbc012 | 1737 | __be32 *p = buffer; |
b37ad28b | 1738 | __be32 status; |
b8dd7b9a | 1739 | int err; |
1da177e4 LT |
1740 | int aclsupport = 0; |
1741 | struct nfs4_acl *acl = NULL; | |
1742 | ||
1743 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
1744 | BUG_ON(bmval0 & ~NFSD_SUPPORTED_ATTRS_WORD0); | |
1745 | BUG_ON(bmval1 & ~NFSD_SUPPORTED_ATTRS_WORD1); | |
1746 | ||
42ca0993 BF |
1747 | if (exp->ex_fslocs.migrated) { |
1748 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); | |
1749 | if (status) | |
1750 | goto out; | |
1751 | } | |
1752 | ||
54775491 | 1753 | err = vfs_getattr(exp->ex_path.mnt, dentry, &stat); |
b8dd7b9a | 1754 | if (err) |
1da177e4 | 1755 | goto out_nfserr; |
a16e92ed BF |
1756 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | |
1757 | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
1758 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
1759 | FATTR4_WORD1_SPACE_TOTAL))) { | |
b8dd7b9a AV |
1760 | err = vfs_statfs(dentry, &statfs); |
1761 | if (err) | |
1da177e4 LT |
1762 | goto out_nfserr; |
1763 | } | |
1764 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
1765 | fh_init(&tempfh, NFS4_FHSIZE); | |
1766 | status = fh_compose(&tempfh, exp, dentry, NULL); | |
1767 | if (status) | |
1768 | goto out; | |
1769 | fhp = &tempfh; | |
1770 | } | |
1771 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
1772 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
b8dd7b9a AV |
1773 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
1774 | aclsupport = (err == 0); | |
1da177e4 | 1775 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 1776 | if (err == -EOPNOTSUPP) |
1da177e4 | 1777 | bmval0 &= ~FATTR4_WORD0_ACL; |
b8dd7b9a | 1778 | else if (err == -EINVAL) { |
1da177e4 LT |
1779 | status = nfserr_attrnotsupp; |
1780 | goto out; | |
b8dd7b9a | 1781 | } else if (err != 0) |
1da177e4 LT |
1782 | goto out_nfserr; |
1783 | } | |
1784 | } | |
81c3f413 BF |
1785 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
1786 | if (exp->ex_fslocs.locations == NULL) { | |
1787 | bmval0 &= ~FATTR4_WORD0_FS_LOCATIONS; | |
1788 | } | |
1789 | } | |
1da177e4 LT |
1790 | if ((buflen -= 16) < 0) |
1791 | goto out_resource; | |
1792 | ||
1793 | WRITE32(2); | |
1794 | WRITE32(bmval0); | |
1795 | WRITE32(bmval1); | |
1796 | attrlenp = p++; /* to be backfilled later */ | |
1797 | ||
1798 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
42ca0993 | 1799 | u32 word0 = NFSD_SUPPORTED_ATTRS_WORD0; |
1da177e4 LT |
1800 | if ((buflen -= 12) < 0) |
1801 | goto out_resource; | |
42ca0993 BF |
1802 | if (!aclsupport) |
1803 | word0 &= ~FATTR4_WORD0_ACL; | |
1804 | if (!exp->ex_fslocs.locations) | |
1805 | word0 &= ~FATTR4_WORD0_FS_LOCATIONS; | |
1da177e4 | 1806 | WRITE32(2); |
42ca0993 | 1807 | WRITE32(word0); |
1da177e4 LT |
1808 | WRITE32(NFSD_SUPPORTED_ATTRS_WORD1); |
1809 | } | |
1810 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
1811 | if ((buflen -= 4) < 0) | |
1812 | goto out_resource; | |
1813 | dummy = nfs4_ftypes[(stat.mode & S_IFMT) >> 12]; | |
1814 | if (dummy == NF4BAD) | |
1815 | goto out_serverfault; | |
1816 | WRITE32(dummy); | |
1817 | } | |
1818 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
1819 | if ((buflen -= 4) < 0) | |
1820 | goto out_resource; | |
49640001 | 1821 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
e34ac862 | 1822 | WRITE32(NFS4_FH_PERSISTENT); |
49640001 | 1823 | else |
e34ac862 | 1824 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
1da177e4 LT |
1825 | } |
1826 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
1827 | /* | |
1828 | * Note: This _must_ be consistent with the scheme for writing | |
1829 | * change_info, so any changes made here must be reflected there | |
1830 | * as well. (See xdr4.h:set_change_info() and the WRITECINFO() | |
1831 | * macro above.) | |
1832 | */ | |
1833 | if ((buflen -= 8) < 0) | |
1834 | goto out_resource; | |
1835 | WRITE32(stat.ctime.tv_sec); | |
1836 | WRITE32(stat.ctime.tv_nsec); | |
1837 | } | |
1838 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
1839 | if ((buflen -= 8) < 0) | |
1840 | goto out_resource; | |
1841 | WRITE64(stat.size); | |
1842 | } | |
1843 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
1844 | if ((buflen -= 4) < 0) | |
1845 | goto out_resource; | |
1846 | WRITE32(1); | |
1847 | } | |
1848 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
1849 | if ((buflen -= 4) < 0) | |
1850 | goto out_resource; | |
1851 | WRITE32(1); | |
1852 | } | |
1853 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
1854 | if ((buflen -= 4) < 0) | |
1855 | goto out_resource; | |
1856 | WRITE32(0); | |
1857 | } | |
1858 | if (bmval0 & FATTR4_WORD0_FSID) { | |
1859 | if ((buflen -= 16) < 0) | |
1860 | goto out_resource; | |
42ca0993 BF |
1861 | if (exp->ex_fslocs.migrated) { |
1862 | WRITE64(NFS4_REFERRAL_FSID_MAJOR); | |
1863 | WRITE64(NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
1864 | } else switch(fsid_source(fhp)) { |
1865 | case FSIDSOURCE_FSID: | |
1da177e4 LT |
1866 | WRITE64((u64)exp->ex_fsid); |
1867 | WRITE64((u64)0); | |
af6a4e28 N |
1868 | break; |
1869 | case FSIDSOURCE_DEV: | |
1da177e4 LT |
1870 | WRITE32(0); |
1871 | WRITE32(MAJOR(stat.dev)); | |
1872 | WRITE32(0); | |
1873 | WRITE32(MINOR(stat.dev)); | |
af6a4e28 N |
1874 | break; |
1875 | case FSIDSOURCE_UUID: | |
1876 | WRITEMEM(exp->ex_uuid, 16); | |
1877 | break; | |
1da177e4 LT |
1878 | } |
1879 | } | |
1880 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
1881 | if ((buflen -= 4) < 0) | |
1882 | goto out_resource; | |
1883 | WRITE32(0); | |
1884 | } | |
1885 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
1886 | if ((buflen -= 4) < 0) | |
1887 | goto out_resource; | |
1888 | WRITE32(NFSD_LEASE_TIME); | |
1889 | } | |
1890 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
1891 | if ((buflen -= 4) < 0) | |
1892 | goto out_resource; | |
42ca0993 | 1893 | WRITE32(rdattr_err); |
1da177e4 LT |
1894 | } |
1895 | if (bmval0 & FATTR4_WORD0_ACL) { | |
1896 | struct nfs4_ace *ace; | |
1da177e4 LT |
1897 | |
1898 | if (acl == NULL) { | |
1899 | if ((buflen -= 4) < 0) | |
1900 | goto out_resource; | |
1901 | ||
1902 | WRITE32(0); | |
1903 | goto out_acl; | |
1904 | } | |
1905 | if ((buflen -= 4) < 0) | |
1906 | goto out_resource; | |
1907 | WRITE32(acl->naces); | |
1908 | ||
28e05dd8 | 1909 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
1da177e4 LT |
1910 | if ((buflen -= 4*3) < 0) |
1911 | goto out_resource; | |
1912 | WRITE32(ace->type); | |
1913 | WRITE32(ace->flag); | |
1914 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); | |
1915 | status = nfsd4_encode_aclname(rqstp, ace->whotype, | |
1916 | ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP, | |
1917 | &p, &buflen); | |
1918 | if (status == nfserr_resource) | |
1919 | goto out_resource; | |
1920 | if (status) | |
1921 | goto out; | |
1922 | } | |
1923 | } | |
1924 | out_acl: | |
1925 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
1926 | if ((buflen -= 4) < 0) | |
1927 | goto out_resource; | |
1928 | WRITE32(aclsupport ? | |
1929 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); | |
1930 | } | |
1931 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
1932 | if ((buflen -= 4) < 0) | |
1933 | goto out_resource; | |
1934 | WRITE32(1); | |
1935 | } | |
1936 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
1937 | if ((buflen -= 4) < 0) | |
1938 | goto out_resource; | |
1939 | WRITE32(1); | |
1940 | } | |
1941 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
1942 | if ((buflen -= 4) < 0) | |
1943 | goto out_resource; | |
1944 | WRITE32(1); | |
1945 | } | |
1946 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
1947 | if ((buflen -= 4) < 0) | |
1948 | goto out_resource; | |
1949 | WRITE32(1); | |
1950 | } | |
1951 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
1952 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; | |
1953 | if (buflen < 0) | |
1954 | goto out_resource; | |
1955 | WRITE32(fhp->fh_handle.fh_size); | |
1956 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); | |
1957 | } | |
1958 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
1959 | if ((buflen -= 8) < 0) | |
1960 | goto out_resource; | |
40ee5dc6 | 1961 | WRITE64(stat.ino); |
1da177e4 LT |
1962 | } |
1963 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
1964 | if ((buflen -= 8) < 0) | |
1965 | goto out_resource; | |
1966 | WRITE64((u64) statfs.f_ffree); | |
1967 | } | |
1968 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
1969 | if ((buflen -= 8) < 0) | |
1970 | goto out_resource; | |
1971 | WRITE64((u64) statfs.f_ffree); | |
1972 | } | |
1973 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
1974 | if ((buflen -= 8) < 0) | |
1975 | goto out_resource; | |
1976 | WRITE64((u64) statfs.f_files); | |
1977 | } | |
81c3f413 BF |
1978 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
1979 | status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); | |
1980 | if (status == nfserr_resource) | |
1981 | goto out_resource; | |
1982 | if (status) | |
1983 | goto out; | |
1984 | } | |
1da177e4 LT |
1985 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
1986 | if ((buflen -= 4) < 0) | |
1987 | goto out_resource; | |
1988 | WRITE32(1); | |
1989 | } | |
1990 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
1991 | if ((buflen -= 8) < 0) | |
1992 | goto out_resource; | |
1993 | WRITE64(~(u64)0); | |
1994 | } | |
1995 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
1996 | if ((buflen -= 4) < 0) | |
1997 | goto out_resource; | |
1998 | WRITE32(255); | |
1999 | } | |
2000 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
2001 | if ((buflen -= 4) < 0) | |
2002 | goto out_resource; | |
a16e92ed | 2003 | WRITE32(statfs.f_namelen); |
1da177e4 LT |
2004 | } |
2005 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
2006 | if ((buflen -= 8) < 0) | |
2007 | goto out_resource; | |
7adae489 | 2008 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2009 | } |
2010 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
2011 | if ((buflen -= 8) < 0) | |
2012 | goto out_resource; | |
7adae489 | 2013 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2014 | } |
2015 | if (bmval1 & FATTR4_WORD1_MODE) { | |
2016 | if ((buflen -= 4) < 0) | |
2017 | goto out_resource; | |
2018 | WRITE32(stat.mode & S_IALLUGO); | |
2019 | } | |
2020 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
2021 | if ((buflen -= 4) < 0) | |
2022 | goto out_resource; | |
2023 | WRITE32(1); | |
2024 | } | |
2025 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
2026 | if ((buflen -= 4) < 0) | |
2027 | goto out_resource; | |
2028 | WRITE32(stat.nlink); | |
2029 | } | |
2030 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
2031 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); | |
2032 | if (status == nfserr_resource) | |
2033 | goto out_resource; | |
2034 | if (status) | |
2035 | goto out; | |
2036 | } | |
2037 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
2038 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); | |
2039 | if (status == nfserr_resource) | |
2040 | goto out_resource; | |
2041 | if (status) | |
2042 | goto out; | |
2043 | } | |
2044 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
2045 | if ((buflen -= 8) < 0) | |
2046 | goto out_resource; | |
2047 | WRITE32((u32) MAJOR(stat.rdev)); | |
2048 | WRITE32((u32) MINOR(stat.rdev)); | |
2049 | } | |
2050 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
2051 | if ((buflen -= 8) < 0) | |
2052 | goto out_resource; | |
2053 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
2054 | WRITE64(dummy64); | |
2055 | } | |
2056 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
2057 | if ((buflen -= 8) < 0) | |
2058 | goto out_resource; | |
2059 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
2060 | WRITE64(dummy64); | |
2061 | } | |
2062 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
2063 | if ((buflen -= 8) < 0) | |
2064 | goto out_resource; | |
2065 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
2066 | WRITE64(dummy64); | |
2067 | } | |
2068 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
2069 | if ((buflen -= 8) < 0) | |
2070 | goto out_resource; | |
2071 | dummy64 = (u64)stat.blocks << 9; | |
2072 | WRITE64(dummy64); | |
2073 | } | |
2074 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
2075 | if ((buflen -= 12) < 0) | |
2076 | goto out_resource; | |
2077 | WRITE32(0); | |
2078 | WRITE32(stat.atime.tv_sec); | |
2079 | WRITE32(stat.atime.tv_nsec); | |
2080 | } | |
2081 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
2082 | if ((buflen -= 12) < 0) | |
2083 | goto out_resource; | |
2084 | WRITE32(0); | |
2085 | WRITE32(1); | |
2086 | WRITE32(0); | |
2087 | } | |
2088 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
2089 | if ((buflen -= 12) < 0) | |
2090 | goto out_resource; | |
2091 | WRITE32(0); | |
2092 | WRITE32(stat.ctime.tv_sec); | |
2093 | WRITE32(stat.ctime.tv_nsec); | |
2094 | } | |
2095 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
2096 | if ((buflen -= 12) < 0) | |
2097 | goto out_resource; | |
2098 | WRITE32(0); | |
2099 | WRITE32(stat.mtime.tv_sec); | |
2100 | WRITE32(stat.mtime.tv_nsec); | |
2101 | } | |
2102 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
1da177e4 LT |
2103 | if ((buflen -= 8) < 0) |
2104 | goto out_resource; | |
406a7ea9 FF |
2105 | /* |
2106 | * Get parent's attributes if not ignoring crossmount | |
2107 | * and this is the root of a cross-mounted filesystem. | |
2108 | */ | |
2109 | if (ignore_crossmnt == 0 && | |
54775491 JB |
2110 | exp->ex_path.mnt->mnt_root->d_inode == dentry->d_inode) { |
2111 | err = vfs_getattr(exp->ex_path.mnt->mnt_parent, | |
2112 | exp->ex_path.mnt->mnt_mountpoint, &stat); | |
40ee5dc6 PS |
2113 | if (err) |
2114 | goto out_nfserr; | |
2115 | } | |
2116 | WRITE64(stat.ino); | |
1da177e4 LT |
2117 | } |
2118 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
2119 | *countp = p - buffer; | |
2120 | status = nfs_ok; | |
2121 | ||
2122 | out: | |
28e05dd8 | 2123 | kfree(acl); |
1da177e4 LT |
2124 | if (fhp == &tempfh) |
2125 | fh_put(&tempfh); | |
2126 | return status; | |
2127 | out_nfserr: | |
b8dd7b9a | 2128 | status = nfserrno(err); |
1da177e4 LT |
2129 | goto out; |
2130 | out_resource: | |
2131 | *countp = 0; | |
2132 | status = nfserr_resource; | |
2133 | goto out; | |
2134 | out_serverfault: | |
2135 | status = nfserr_serverfault; | |
2136 | goto out; | |
2137 | } | |
2138 | ||
c0ce6ec8 BF |
2139 | static inline int attributes_need_mount(u32 *bmval) |
2140 | { | |
2141 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2142 | return 1; | |
2143 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2144 | return 1; | |
2145 | return 0; | |
2146 | } | |
2147 | ||
b37ad28b | 2148 | static __be32 |
1da177e4 | 2149 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, |
2ebbc012 | 2150 | const char *name, int namlen, __be32 *p, int *buflen) |
1da177e4 LT |
2151 | { |
2152 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2153 | struct dentry *dentry; | |
b37ad28b | 2154 | __be32 nfserr; |
406a7ea9 | 2155 | int ignore_crossmnt = 0; |
1da177e4 LT |
2156 | |
2157 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
2158 | if (IS_ERR(dentry)) | |
2159 | return nfserrno(PTR_ERR(dentry)); | |
2160 | ||
2161 | exp_get(exp); | |
406a7ea9 FF |
2162 | /* |
2163 | * In the case of a mountpoint, the client may be asking for | |
2164 | * attributes that are only properties of the underlying filesystem | |
2165 | * as opposed to the cross-mounted file system. In such a case, | |
2166 | * we will not follow the cross mount and will fill the attribtutes | |
2167 | * directly from the mountpoint dentry. | |
2168 | */ | |
c0ce6ec8 | 2169 | if (d_mountpoint(dentry) && !attributes_need_mount(cd->rd_bmval)) |
406a7ea9 FF |
2170 | ignore_crossmnt = 1; |
2171 | else if (d_mountpoint(dentry)) { | |
021d3a72 BF |
2172 | int err; |
2173 | ||
dcb488a3 AA |
2174 | /* |
2175 | * Why the heck aren't we just using nfsd_lookup?? | |
2176 | * Different "."/".." handling? Something else? | |
2177 | * At least, add a comment here to explain.... | |
2178 | */ | |
021d3a72 BF |
2179 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
2180 | if (err) { | |
2181 | nfserr = nfserrno(err); | |
1da177e4 LT |
2182 | goto out_put; |
2183 | } | |
dcb488a3 AA |
2184 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
2185 | if (nfserr) | |
2186 | goto out_put; | |
1da177e4 LT |
2187 | |
2188 | } | |
2189 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, | |
406a7ea9 | 2190 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
2191 | out_put: |
2192 | dput(dentry); | |
2193 | exp_put(exp); | |
2194 | return nfserr; | |
2195 | } | |
2196 | ||
2ebbc012 | 2197 | static __be32 * |
b37ad28b | 2198 | nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr) |
1da177e4 | 2199 | { |
2ebbc012 | 2200 | __be32 *attrlenp; |
1da177e4 LT |
2201 | |
2202 | if (buflen < 6) | |
2203 | return NULL; | |
2204 | *p++ = htonl(2); | |
2205 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
2206 | *p++ = htonl(0); /* bmval1 */ | |
2207 | ||
2208 | attrlenp = p++; | |
2209 | *p++ = nfserr; /* no htonl */ | |
2210 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
2211 | return p; | |
2212 | } | |
2213 | ||
2214 | static int | |
a0ad13ef N |
2215 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
2216 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 2217 | { |
a0ad13ef | 2218 | struct readdir_cd *ccd = ccdv; |
1da177e4 LT |
2219 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
2220 | int buflen; | |
2ebbc012 | 2221 | __be32 *p = cd->buffer; |
b37ad28b | 2222 | __be32 nfserr = nfserr_toosmall; |
1da177e4 LT |
2223 | |
2224 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
2225 | if (name && isdotent(name, namlen)) { | |
2226 | cd->common.err = nfs_ok; | |
2227 | return 0; | |
2228 | } | |
2229 | ||
2230 | if (cd->offset) | |
2231 | xdr_encode_hyper(cd->offset, (u64) offset); | |
2232 | ||
2233 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); | |
2234 | if (buflen < 0) | |
2235 | goto fail; | |
2236 | ||
2237 | *p++ = xdr_one; /* mark entry present */ | |
2238 | cd->offset = p; /* remember pointer */ | |
2239 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ | |
2240 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
2241 | ||
2242 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen); | |
2243 | switch (nfserr) { | |
2244 | case nfs_ok: | |
2245 | p += buflen; | |
2246 | break; | |
2247 | case nfserr_resource: | |
2248 | nfserr = nfserr_toosmall; | |
2249 | goto fail; | |
2250 | case nfserr_dropit: | |
2251 | goto fail; | |
2252 | default: | |
2253 | /* | |
2254 | * If the client requested the RDATTR_ERROR attribute, | |
2255 | * we stuff the error code into this attribute | |
2256 | * and continue. If this attribute was not requested, | |
2257 | * then in accordance with the spec, we fail the | |
2258 | * entire READDIR operation(!) | |
2259 | */ | |
2260 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
2261 | goto fail; | |
1da177e4 | 2262 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
34081efc FI |
2263 | if (p == NULL) { |
2264 | nfserr = nfserr_toosmall; | |
1da177e4 | 2265 | goto fail; |
34081efc | 2266 | } |
1da177e4 LT |
2267 | } |
2268 | cd->buflen -= (p - cd->buffer); | |
2269 | cd->buffer = p; | |
2270 | cd->common.err = nfs_ok; | |
2271 | return 0; | |
2272 | fail: | |
2273 | cd->common.err = nfserr; | |
2274 | return -EINVAL; | |
2275 | } | |
2276 | ||
e2f282b9 BH |
2277 | static void |
2278 | nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid) | |
2279 | { | |
2280 | ENCODE_HEAD; | |
2281 | ||
2282 | RESERVE_SPACE(sizeof(stateid_t)); | |
2283 | WRITE32(sid->si_generation); | |
2284 | WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
2285 | ADJUST_ARGS(); | |
2286 | } | |
2287 | ||
695e12f8 | 2288 | static __be32 |
b37ad28b | 2289 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 LT |
2290 | { |
2291 | ENCODE_HEAD; | |
2292 | ||
2293 | if (!nfserr) { | |
2294 | RESERVE_SPACE(8); | |
2295 | WRITE32(access->ac_supported); | |
2296 | WRITE32(access->ac_resp_access); | |
2297 | ADJUST_ARGS(); | |
2298 | } | |
695e12f8 | 2299 | return nfserr; |
1da177e4 LT |
2300 | } |
2301 | ||
695e12f8 | 2302 | static __be32 |
b37ad28b | 2303 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 LT |
2304 | { |
2305 | ENCODE_SEQID_OP_HEAD; | |
2306 | ||
e2f282b9 BH |
2307 | if (!nfserr) |
2308 | nfsd4_encode_stateid(resp, &close->cl_stateid); | |
2309 | ||
1da177e4 | 2310 | ENCODE_SEQID_OP_TAIL(close->cl_stateowner); |
695e12f8 | 2311 | return nfserr; |
1da177e4 LT |
2312 | } |
2313 | ||
2314 | ||
695e12f8 | 2315 | static __be32 |
b37ad28b | 2316 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 LT |
2317 | { |
2318 | ENCODE_HEAD; | |
2319 | ||
2320 | if (!nfserr) { | |
2321 | RESERVE_SPACE(8); | |
2322 | WRITEMEM(commit->co_verf.data, 8); | |
2323 | ADJUST_ARGS(); | |
2324 | } | |
695e12f8 | 2325 | return nfserr; |
1da177e4 LT |
2326 | } |
2327 | ||
695e12f8 | 2328 | static __be32 |
b37ad28b | 2329 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 LT |
2330 | { |
2331 | ENCODE_HEAD; | |
2332 | ||
2333 | if (!nfserr) { | |
2334 | RESERVE_SPACE(32); | |
2335 | WRITECINFO(create->cr_cinfo); | |
2336 | WRITE32(2); | |
2337 | WRITE32(create->cr_bmval[0]); | |
2338 | WRITE32(create->cr_bmval[1]); | |
2339 | ADJUST_ARGS(); | |
2340 | } | |
695e12f8 | 2341 | return nfserr; |
1da177e4 LT |
2342 | } |
2343 | ||
b37ad28b AV |
2344 | static __be32 |
2345 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
2346 | { |
2347 | struct svc_fh *fhp = getattr->ga_fhp; | |
2348 | int buflen; | |
2349 | ||
2350 | if (nfserr) | |
2351 | return nfserr; | |
2352 | ||
2353 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); | |
2354 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, | |
2355 | resp->p, &buflen, getattr->ga_bmval, | |
406a7ea9 | 2356 | resp->rqstp, 0); |
1da177e4 LT |
2357 | if (!nfserr) |
2358 | resp->p += buflen; | |
2359 | return nfserr; | |
2360 | } | |
2361 | ||
695e12f8 BH |
2362 | static __be32 |
2363 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 2364 | { |
695e12f8 | 2365 | struct svc_fh *fhp = *fhpp; |
1da177e4 LT |
2366 | unsigned int len; |
2367 | ENCODE_HEAD; | |
2368 | ||
2369 | if (!nfserr) { | |
2370 | len = fhp->fh_handle.fh_size; | |
2371 | RESERVE_SPACE(len + 4); | |
2372 | WRITE32(len); | |
2373 | WRITEMEM(&fhp->fh_handle.fh_base, len); | |
2374 | ADJUST_ARGS(); | |
2375 | } | |
695e12f8 | 2376 | return nfserr; |
1da177e4 LT |
2377 | } |
2378 | ||
2379 | /* | |
2380 | * Including all fields other than the name, a LOCK4denied structure requires | |
2381 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
2382 | */ | |
2383 | static void | |
2384 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) | |
2385 | { | |
2386 | ENCODE_HEAD; | |
2387 | ||
2388 | RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0)); | |
2389 | WRITE64(ld->ld_start); | |
2390 | WRITE64(ld->ld_length); | |
2391 | WRITE32(ld->ld_type); | |
2392 | if (ld->ld_sop) { | |
2393 | WRITEMEM(&ld->ld_clientid, 8); | |
2394 | WRITE32(ld->ld_sop->so_owner.len); | |
2395 | WRITEMEM(ld->ld_sop->so_owner.data, ld->ld_sop->so_owner.len); | |
2396 | kref_put(&ld->ld_sop->so_ref, nfs4_free_stateowner); | |
2397 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ | |
2398 | WRITE64((u64)0); /* clientid */ | |
2399 | WRITE32(0); /* length of owner name */ | |
2400 | } | |
2401 | ADJUST_ARGS(); | |
2402 | } | |
2403 | ||
695e12f8 | 2404 | static __be32 |
b37ad28b | 2405 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 2406 | { |
1da177e4 LT |
2407 | ENCODE_SEQID_OP_HEAD; |
2408 | ||
e2f282b9 BH |
2409 | if (!nfserr) |
2410 | nfsd4_encode_stateid(resp, &lock->lk_resp_stateid); | |
2411 | else if (nfserr == nfserr_denied) | |
1da177e4 LT |
2412 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); |
2413 | ||
3a65588a | 2414 | ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner); |
695e12f8 | 2415 | return nfserr; |
1da177e4 LT |
2416 | } |
2417 | ||
695e12f8 | 2418 | static __be32 |
b37ad28b | 2419 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 LT |
2420 | { |
2421 | if (nfserr == nfserr_denied) | |
2422 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); | |
695e12f8 | 2423 | return nfserr; |
1da177e4 LT |
2424 | } |
2425 | ||
695e12f8 | 2426 | static __be32 |
b37ad28b | 2427 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 LT |
2428 | { |
2429 | ENCODE_SEQID_OP_HEAD; | |
2430 | ||
e2f282b9 BH |
2431 | if (!nfserr) |
2432 | nfsd4_encode_stateid(resp, &locku->lu_stateid); | |
2433 | ||
1da177e4 | 2434 | ENCODE_SEQID_OP_TAIL(locku->lu_stateowner); |
695e12f8 | 2435 | return nfserr; |
1da177e4 LT |
2436 | } |
2437 | ||
2438 | ||
695e12f8 | 2439 | static __be32 |
b37ad28b | 2440 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 LT |
2441 | { |
2442 | ENCODE_HEAD; | |
2443 | ||
2444 | if (!nfserr) { | |
2445 | RESERVE_SPACE(20); | |
2446 | WRITECINFO(link->li_cinfo); | |
2447 | ADJUST_ARGS(); | |
2448 | } | |
695e12f8 | 2449 | return nfserr; |
1da177e4 LT |
2450 | } |
2451 | ||
2452 | ||
695e12f8 | 2453 | static __be32 |
b37ad28b | 2454 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 2455 | { |
1b6b2257 | 2456 | ENCODE_HEAD; |
1da177e4 LT |
2457 | ENCODE_SEQID_OP_HEAD; |
2458 | ||
2459 | if (nfserr) | |
2460 | goto out; | |
2461 | ||
e2f282b9 BH |
2462 | nfsd4_encode_stateid(resp, &open->op_stateid); |
2463 | RESERVE_SPACE(40); | |
1da177e4 LT |
2464 | WRITECINFO(open->op_cinfo); |
2465 | WRITE32(open->op_rflags); | |
2466 | WRITE32(2); | |
2467 | WRITE32(open->op_bmval[0]); | |
2468 | WRITE32(open->op_bmval[1]); | |
2469 | WRITE32(open->op_delegate_type); | |
2470 | ADJUST_ARGS(); | |
2471 | ||
2472 | switch (open->op_delegate_type) { | |
2473 | case NFS4_OPEN_DELEGATE_NONE: | |
2474 | break; | |
2475 | case NFS4_OPEN_DELEGATE_READ: | |
e2f282b9 BH |
2476 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2477 | RESERVE_SPACE(20); | |
7b190fec | 2478 | WRITE32(open->op_recall); |
1da177e4 LT |
2479 | |
2480 | /* | |
2481 | * TODO: ACE's in delegations | |
2482 | */ | |
2483 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2484 | WRITE32(0); | |
2485 | WRITE32(0); | |
2486 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2487 | ADJUST_ARGS(); | |
2488 | break; | |
2489 | case NFS4_OPEN_DELEGATE_WRITE: | |
e2f282b9 BH |
2490 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2491 | RESERVE_SPACE(32); | |
1da177e4 LT |
2492 | WRITE32(0); |
2493 | ||
2494 | /* | |
2495 | * TODO: space_limit's in delegations | |
2496 | */ | |
2497 | WRITE32(NFS4_LIMIT_SIZE); | |
2498 | WRITE32(~(u32)0); | |
2499 | WRITE32(~(u32)0); | |
2500 | ||
2501 | /* | |
2502 | * TODO: ACE's in delegations | |
2503 | */ | |
2504 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2505 | WRITE32(0); | |
2506 | WRITE32(0); | |
2507 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2508 | ADJUST_ARGS(); | |
2509 | break; | |
2510 | default: | |
2511 | BUG(); | |
2512 | } | |
2513 | /* XXX save filehandle here */ | |
2514 | out: | |
2515 | ENCODE_SEQID_OP_TAIL(open->op_stateowner); | |
695e12f8 | 2516 | return nfserr; |
1da177e4 LT |
2517 | } |
2518 | ||
695e12f8 | 2519 | static __be32 |
b37ad28b | 2520 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 LT |
2521 | { |
2522 | ENCODE_SEQID_OP_HEAD; | |
e2f282b9 BH |
2523 | |
2524 | if (!nfserr) | |
2525 | nfsd4_encode_stateid(resp, &oc->oc_resp_stateid); | |
1da177e4 LT |
2526 | |
2527 | ENCODE_SEQID_OP_TAIL(oc->oc_stateowner); | |
695e12f8 | 2528 | return nfserr; |
1da177e4 LT |
2529 | } |
2530 | ||
695e12f8 | 2531 | static __be32 |
b37ad28b | 2532 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 LT |
2533 | { |
2534 | ENCODE_SEQID_OP_HEAD; | |
e2f282b9 BH |
2535 | |
2536 | if (!nfserr) | |
2537 | nfsd4_encode_stateid(resp, &od->od_stateid); | |
1da177e4 LT |
2538 | |
2539 | ENCODE_SEQID_OP_TAIL(od->od_stateowner); | |
695e12f8 | 2540 | return nfserr; |
1da177e4 LT |
2541 | } |
2542 | ||
b37ad28b AV |
2543 | static __be32 |
2544 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
44524359 | 2545 | struct nfsd4_read *read) |
1da177e4 LT |
2546 | { |
2547 | u32 eof; | |
2548 | int v, pn; | |
2549 | unsigned long maxcount; | |
2550 | long len; | |
2551 | ENCODE_HEAD; | |
2552 | ||
2553 | if (nfserr) | |
2554 | return nfserr; | |
2555 | if (resp->xbuf->page_len) | |
2556 | return nfserr_resource; | |
2557 | ||
2558 | RESERVE_SPACE(8); /* eof flag and byte count */ | |
2559 | ||
7adae489 | 2560 | maxcount = svc_max_payload(resp->rqstp); |
1da177e4 LT |
2561 | if (maxcount > read->rd_length) |
2562 | maxcount = read->rd_length; | |
2563 | ||
2564 | len = maxcount; | |
2565 | v = 0; | |
2566 | while (len > 0) { | |
44524359 | 2567 | pn = resp->rqstp->rq_resused++; |
3cc03b16 | 2568 | resp->rqstp->rq_vec[v].iov_base = |
44524359 | 2569 | page_address(resp->rqstp->rq_respages[pn]); |
3cc03b16 | 2570 | resp->rqstp->rq_vec[v].iov_len = |
44524359 | 2571 | len < PAGE_SIZE ? len : PAGE_SIZE; |
1da177e4 LT |
2572 | v++; |
2573 | len -= PAGE_SIZE; | |
2574 | } | |
2575 | read->rd_vlen = v; | |
2576 | ||
2577 | nfserr = nfsd_read(read->rd_rqstp, read->rd_fhp, read->rd_filp, | |
3cc03b16 | 2578 | read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, |
1da177e4 LT |
2579 | &maxcount); |
2580 | ||
2581 | if (nfserr == nfserr_symlink) | |
2582 | nfserr = nfserr_inval; | |
2583 | if (nfserr) | |
2584 | return nfserr; | |
44524359 N |
2585 | eof = (read->rd_offset + maxcount >= |
2586 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 LT |
2587 | |
2588 | WRITE32(eof); | |
2589 | WRITE32(maxcount); | |
2590 | ADJUST_ARGS(); | |
6ed6decc N |
2591 | resp->xbuf->head[0].iov_len = (char*)p |
2592 | - (char*)resp->xbuf->head[0].iov_base; | |
1da177e4 LT |
2593 | resp->xbuf->page_len = maxcount; |
2594 | ||
6ed6decc | 2595 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2596 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2597 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2598 | if (maxcount&3) { |
6ed6decc N |
2599 | RESERVE_SPACE(4); |
2600 | WRITE32(0); | |
1da177e4 LT |
2601 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2602 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2603 | ADJUST_ARGS(); |
1da177e4 LT |
2604 | } |
2605 | return 0; | |
2606 | } | |
2607 | ||
b37ad28b AV |
2608 | static __be32 |
2609 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
2610 | { |
2611 | int maxcount; | |
2612 | char *page; | |
2613 | ENCODE_HEAD; | |
2614 | ||
2615 | if (nfserr) | |
2616 | return nfserr; | |
2617 | if (resp->xbuf->page_len) | |
2618 | return nfserr_resource; | |
2619 | ||
44524359 | 2620 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
1da177e4 LT |
2621 | |
2622 | maxcount = PAGE_SIZE; | |
2623 | RESERVE_SPACE(4); | |
2624 | ||
2625 | /* | |
2626 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
2627 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
2628 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
2629 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
2630 | */ | |
2631 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); | |
2632 | if (nfserr == nfserr_isdir) | |
2633 | return nfserr_inval; | |
2634 | if (nfserr) | |
2635 | return nfserr; | |
2636 | ||
2637 | WRITE32(maxcount); | |
2638 | ADJUST_ARGS(); | |
6ed6decc N |
2639 | resp->xbuf->head[0].iov_len = (char*)p |
2640 | - (char*)resp->xbuf->head[0].iov_base; | |
2641 | resp->xbuf->page_len = maxcount; | |
1da177e4 | 2642 | |
6ed6decc | 2643 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2644 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2645 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2646 | if (maxcount&3) { |
6ed6decc N |
2647 | RESERVE_SPACE(4); |
2648 | WRITE32(0); | |
1da177e4 LT |
2649 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2650 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2651 | ADJUST_ARGS(); |
1da177e4 LT |
2652 | } |
2653 | return 0; | |
2654 | } | |
2655 | ||
b37ad28b AV |
2656 | static __be32 |
2657 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
2658 | { |
2659 | int maxcount; | |
2660 | loff_t offset; | |
2ebbc012 | 2661 | __be32 *page, *savep, *tailbase; |
1da177e4 LT |
2662 | ENCODE_HEAD; |
2663 | ||
2664 | if (nfserr) | |
2665 | return nfserr; | |
2666 | if (resp->xbuf->page_len) | |
2667 | return nfserr_resource; | |
2668 | ||
2669 | RESERVE_SPACE(8); /* verifier */ | |
2670 | savep = p; | |
2671 | ||
2672 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
2673 | WRITE32(0); | |
2674 | WRITE32(0); | |
2675 | ADJUST_ARGS(); | |
2676 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; | |
bb6e8a9f | 2677 | tailbase = p; |
1da177e4 LT |
2678 | |
2679 | maxcount = PAGE_SIZE; | |
2680 | if (maxcount > readdir->rd_maxcount) | |
2681 | maxcount = readdir->rd_maxcount; | |
2682 | ||
2683 | /* | |
2684 | * Convert from bytes to words, account for the two words already | |
2685 | * written, make sure to leave two words at the end for the next | |
2686 | * pointer and eof field. | |
2687 | */ | |
2688 | maxcount = (maxcount >> 2) - 4; | |
2689 | if (maxcount < 0) { | |
2690 | nfserr = nfserr_toosmall; | |
2691 | goto err_no_verf; | |
2692 | } | |
2693 | ||
44524359 | 2694 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
1da177e4 LT |
2695 | readdir->common.err = 0; |
2696 | readdir->buflen = maxcount; | |
2697 | readdir->buffer = page; | |
2698 | readdir->offset = NULL; | |
2699 | ||
2700 | offset = readdir->rd_cookie; | |
2701 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
2702 | &offset, | |
2703 | &readdir->common, nfsd4_encode_dirent); | |
2704 | if (nfserr == nfs_ok && | |
2705 | readdir->common.err == nfserr_toosmall && | |
2706 | readdir->buffer == page) | |
2707 | nfserr = nfserr_toosmall; | |
2708 | if (nfserr == nfserr_symlink) | |
2709 | nfserr = nfserr_notdir; | |
2710 | if (nfserr) | |
2711 | goto err_no_verf; | |
2712 | ||
2713 | if (readdir->offset) | |
2714 | xdr_encode_hyper(readdir->offset, offset); | |
2715 | ||
2716 | p = readdir->buffer; | |
2717 | *p++ = 0; /* no more entries */ | |
2718 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
44524359 N |
2719 | resp->xbuf->page_len = ((char*)p) - (char*)page_address( |
2720 | resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); | |
1da177e4 | 2721 | |
bb6e8a9f | 2722 | /* Use rest of head for padding and remaining ops: */ |
bb6e8a9f | 2723 | resp->xbuf->tail[0].iov_base = tailbase; |
1da177e4 LT |
2724 | resp->xbuf->tail[0].iov_len = 0; |
2725 | resp->p = resp->xbuf->tail[0].iov_base; | |
bb6e8a9f | 2726 | resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; |
1da177e4 LT |
2727 | |
2728 | return 0; | |
2729 | err_no_verf: | |
2730 | p = savep; | |
2731 | ADJUST_ARGS(); | |
2732 | return nfserr; | |
2733 | } | |
2734 | ||
695e12f8 | 2735 | static __be32 |
b37ad28b | 2736 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 LT |
2737 | { |
2738 | ENCODE_HEAD; | |
2739 | ||
2740 | if (!nfserr) { | |
2741 | RESERVE_SPACE(20); | |
2742 | WRITECINFO(remove->rm_cinfo); | |
2743 | ADJUST_ARGS(); | |
2744 | } | |
695e12f8 | 2745 | return nfserr; |
1da177e4 LT |
2746 | } |
2747 | ||
695e12f8 | 2748 | static __be32 |
b37ad28b | 2749 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 LT |
2750 | { |
2751 | ENCODE_HEAD; | |
2752 | ||
2753 | if (!nfserr) { | |
2754 | RESERVE_SPACE(40); | |
2755 | WRITECINFO(rename->rn_sinfo); | |
2756 | WRITECINFO(rename->rn_tinfo); | |
2757 | ADJUST_ARGS(); | |
2758 | } | |
695e12f8 | 2759 | return nfserr; |
1da177e4 LT |
2760 | } |
2761 | ||
695e12f8 | 2762 | static __be32 |
ca5c8cde | 2763 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, |
dcb488a3 AA |
2764 | struct nfsd4_secinfo *secinfo) |
2765 | { | |
2766 | int i = 0; | |
2767 | struct svc_export *exp = secinfo->si_exp; | |
4796f457 BF |
2768 | u32 nflavs; |
2769 | struct exp_flavor_info *flavs; | |
2770 | struct exp_flavor_info def_flavs[2]; | |
dcb488a3 AA |
2771 | ENCODE_HEAD; |
2772 | ||
2773 | if (nfserr) | |
2774 | goto out; | |
4796f457 BF |
2775 | if (exp->ex_nflavors) { |
2776 | flavs = exp->ex_flavors; | |
2777 | nflavs = exp->ex_nflavors; | |
2778 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
2779 | flavs = def_flavs; | |
2780 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
2781 | nflavs = 2; | |
2782 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
2783 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
2784 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
2785 | nflavs = 1; | |
2786 | flavs[0].pseudoflavor | |
2787 | = svcauth_gss_flavor(exp->ex_client); | |
2788 | } else { | |
2789 | nflavs = 1; | |
2790 | flavs[0].pseudoflavor | |
2791 | = exp->ex_client->flavour->flavour; | |
2792 | } | |
2793 | } | |
2794 | ||
dcb488a3 | 2795 | RESERVE_SPACE(4); |
4796f457 | 2796 | WRITE32(nflavs); |
dcb488a3 | 2797 | ADJUST_ARGS(); |
4796f457 BF |
2798 | for (i = 0; i < nflavs; i++) { |
2799 | u32 flav = flavs[i].pseudoflavor; | |
dcb488a3 AA |
2800 | struct gss_api_mech *gm = gss_mech_get_by_pseudoflavor(flav); |
2801 | ||
2802 | if (gm) { | |
2803 | RESERVE_SPACE(4); | |
2804 | WRITE32(RPC_AUTH_GSS); | |
2805 | ADJUST_ARGS(); | |
2806 | RESERVE_SPACE(4 + gm->gm_oid.len); | |
2807 | WRITE32(gm->gm_oid.len); | |
2808 | WRITEMEM(gm->gm_oid.data, gm->gm_oid.len); | |
2809 | ADJUST_ARGS(); | |
2810 | RESERVE_SPACE(4); | |
2811 | WRITE32(0); /* qop */ | |
2812 | ADJUST_ARGS(); | |
2813 | RESERVE_SPACE(4); | |
2814 | WRITE32(gss_pseudoflavor_to_service(gm, flav)); | |
2815 | ADJUST_ARGS(); | |
2816 | gss_mech_put(gm); | |
2817 | } else { | |
2818 | RESERVE_SPACE(4); | |
2819 | WRITE32(flav); | |
2820 | ADJUST_ARGS(); | |
2821 | } | |
2822 | } | |
2823 | out: | |
2824 | if (exp) | |
2825 | exp_put(exp); | |
695e12f8 | 2826 | return nfserr; |
dcb488a3 AA |
2827 | } |
2828 | ||
1da177e4 LT |
2829 | /* |
2830 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
2831 | * regardless of the error status. | |
2832 | */ | |
695e12f8 | 2833 | static __be32 |
b37ad28b | 2834 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 LT |
2835 | { |
2836 | ENCODE_HEAD; | |
2837 | ||
2838 | RESERVE_SPACE(12); | |
2839 | if (nfserr) { | |
2840 | WRITE32(2); | |
2841 | WRITE32(0); | |
2842 | WRITE32(0); | |
2843 | } | |
2844 | else { | |
2845 | WRITE32(2); | |
2846 | WRITE32(setattr->sa_bmval[0]); | |
2847 | WRITE32(setattr->sa_bmval[1]); | |
2848 | } | |
2849 | ADJUST_ARGS(); | |
695e12f8 | 2850 | return nfserr; |
1da177e4 LT |
2851 | } |
2852 | ||
695e12f8 | 2853 | static __be32 |
b37ad28b | 2854 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 LT |
2855 | { |
2856 | ENCODE_HEAD; | |
2857 | ||
2858 | if (!nfserr) { | |
2859 | RESERVE_SPACE(8 + sizeof(nfs4_verifier)); | |
2860 | WRITEMEM(&scd->se_clientid, 8); | |
2861 | WRITEMEM(&scd->se_confirm, sizeof(nfs4_verifier)); | |
2862 | ADJUST_ARGS(); | |
2863 | } | |
2864 | else if (nfserr == nfserr_clid_inuse) { | |
2865 | RESERVE_SPACE(8); | |
2866 | WRITE32(0); | |
2867 | WRITE32(0); | |
2868 | ADJUST_ARGS(); | |
2869 | } | |
695e12f8 | 2870 | return nfserr; |
1da177e4 LT |
2871 | } |
2872 | ||
695e12f8 | 2873 | static __be32 |
b37ad28b | 2874 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 LT |
2875 | { |
2876 | ENCODE_HEAD; | |
2877 | ||
2878 | if (!nfserr) { | |
2879 | RESERVE_SPACE(16); | |
2880 | WRITE32(write->wr_bytes_written); | |
2881 | WRITE32(write->wr_how_written); | |
2882 | WRITEMEM(write->wr_verifier.data, 8); | |
2883 | ADJUST_ARGS(); | |
2884 | } | |
695e12f8 | 2885 | return nfserr; |
1da177e4 LT |
2886 | } |
2887 | ||
2db134eb AA |
2888 | static __be32 |
2889 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, int nfserr, | |
2890 | struct nfsd4_exchange_id *exid) | |
2891 | { | |
0733d213 AA |
2892 | ENCODE_HEAD; |
2893 | char *major_id; | |
2894 | char *server_scope; | |
2895 | int major_id_sz; | |
2896 | int server_scope_sz; | |
2897 | uint64_t minor_id = 0; | |
2898 | ||
2899 | if (nfserr) | |
2900 | return nfserr; | |
2901 | ||
2902 | major_id = utsname()->nodename; | |
2903 | major_id_sz = strlen(major_id); | |
2904 | server_scope = utsname()->nodename; | |
2905 | server_scope_sz = strlen(server_scope); | |
2906 | ||
2907 | RESERVE_SPACE( | |
2908 | 8 /* eir_clientid */ + | |
2909 | 4 /* eir_sequenceid */ + | |
2910 | 4 /* eir_flags */ + | |
2911 | 4 /* spr_how (SP4_NONE) */ + | |
2912 | 8 /* so_minor_id */ + | |
2913 | 4 /* so_major_id.len */ + | |
2914 | (XDR_QUADLEN(major_id_sz) * 4) + | |
2915 | 4 /* eir_server_scope.len */ + | |
2916 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
2917 | 4 /* eir_server_impl_id.count (0) */); | |
2918 | ||
2919 | WRITEMEM(&exid->clientid, 8); | |
2920 | WRITE32(exid->seqid); | |
2921 | WRITE32(exid->flags); | |
2922 | ||
2923 | /* state_protect4_r. Currently only support SP4_NONE */ | |
2924 | BUG_ON(exid->spa_how != SP4_NONE); | |
2925 | WRITE32(exid->spa_how); | |
2926 | ||
2927 | /* The server_owner struct */ | |
2928 | WRITE64(minor_id); /* Minor id */ | |
2929 | /* major id */ | |
2930 | WRITE32(major_id_sz); | |
2931 | WRITEMEM(major_id, major_id_sz); | |
2932 | ||
2933 | /* Server scope */ | |
2934 | WRITE32(server_scope_sz); | |
2935 | WRITEMEM(server_scope, server_scope_sz); | |
2936 | ||
2937 | /* Implementation id */ | |
2938 | WRITE32(0); /* zero length nfs_impl_id4 array */ | |
2939 | ADJUST_ARGS(); | |
2940 | return 0; | |
2db134eb AA |
2941 | } |
2942 | ||
2943 | static __be32 | |
2944 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, int nfserr, | |
2945 | struct nfsd4_create_session *sess) | |
2946 | { | |
ec6b5d7b AA |
2947 | ENCODE_HEAD; |
2948 | ||
2949 | if (nfserr) | |
2950 | return nfserr; | |
2951 | ||
2952 | RESERVE_SPACE(24); | |
2953 | WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
2954 | WRITE32(sess->seqid); | |
2955 | WRITE32(sess->flags); | |
2956 | ADJUST_ARGS(); | |
2957 | ||
2958 | RESERVE_SPACE(28); | |
2959 | WRITE32(0); /* headerpadsz */ | |
2960 | WRITE32(sess->fore_channel.maxreq_sz); | |
2961 | WRITE32(sess->fore_channel.maxresp_sz); | |
2962 | WRITE32(sess->fore_channel.maxresp_cached); | |
2963 | WRITE32(sess->fore_channel.maxops); | |
2964 | WRITE32(sess->fore_channel.maxreqs); | |
2965 | WRITE32(sess->fore_channel.nr_rdma_attrs); | |
2966 | ADJUST_ARGS(); | |
2967 | ||
2968 | if (sess->fore_channel.nr_rdma_attrs) { | |
2969 | RESERVE_SPACE(4); | |
2970 | WRITE32(sess->fore_channel.rdma_attrs); | |
2971 | ADJUST_ARGS(); | |
2972 | } | |
2973 | ||
2974 | RESERVE_SPACE(28); | |
2975 | WRITE32(0); /* headerpadsz */ | |
2976 | WRITE32(sess->back_channel.maxreq_sz); | |
2977 | WRITE32(sess->back_channel.maxresp_sz); | |
2978 | WRITE32(sess->back_channel.maxresp_cached); | |
2979 | WRITE32(sess->back_channel.maxops); | |
2980 | WRITE32(sess->back_channel.maxreqs); | |
2981 | WRITE32(sess->back_channel.nr_rdma_attrs); | |
2982 | ADJUST_ARGS(); | |
2983 | ||
2984 | if (sess->back_channel.nr_rdma_attrs) { | |
2985 | RESERVE_SPACE(4); | |
2986 | WRITE32(sess->back_channel.rdma_attrs); | |
2987 | ADJUST_ARGS(); | |
2988 | } | |
2989 | return 0; | |
2db134eb AA |
2990 | } |
2991 | ||
2992 | static __be32 | |
2993 | nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, int nfserr, | |
2994 | struct nfsd4_destroy_session *destroy_session) | |
2995 | { | |
2db134eb AA |
2996 | return nfserr; |
2997 | } | |
2998 | ||
bf864a31 | 2999 | __be32 |
2db134eb AA |
3000 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr, |
3001 | struct nfsd4_sequence *seq) | |
3002 | { | |
b85d4c01 BH |
3003 | ENCODE_HEAD; |
3004 | ||
3005 | if (nfserr) | |
3006 | return nfserr; | |
3007 | ||
3008 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20); | |
3009 | WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3010 | WRITE32(seq->seqid); | |
3011 | WRITE32(seq->slotid); | |
3012 | WRITE32(seq->maxslots); | |
3013 | /* | |
3014 | * FIXME: for now: | |
3015 | * target_maxslots = maxslots | |
3016 | * status_flags = 0 | |
3017 | */ | |
3018 | WRITE32(seq->maxslots); | |
3019 | WRITE32(0); | |
3020 | ||
3021 | ADJUST_ARGS(); | |
3022 | return 0; | |
2db134eb AA |
3023 | } |
3024 | ||
695e12f8 BH |
3025 | static __be32 |
3026 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
3027 | { | |
3028 | return nfserr; | |
3029 | } | |
3030 | ||
3031 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
3032 | ||
2db134eb AA |
3033 | /* |
3034 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
3035 | * since we don't need to filter out obsolete ops as this is | |
3036 | * done in the decoding phase. | |
3037 | */ | |
695e12f8 | 3038 | static nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
3039 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
3040 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
3041 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
3042 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
3043 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
3044 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
3045 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
3046 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
3047 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
3048 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
3049 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
3050 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
3051 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
3052 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
3053 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3054 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 3055 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
3056 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
3057 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
3058 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3059 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3060 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3061 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
3062 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
3063 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
3064 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
3065 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
3066 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
3067 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3068 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3069 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
3070 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
3071 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
3072 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
3073 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3074 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
3075 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3076 | |
3077 | /* NFSv4.1 operations */ | |
3078 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
3079 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_noop, | |
3080 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, | |
3081 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
3082 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session, | |
3083 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
3084 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, | |
3085 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, | |
3086 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
3087 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
3088 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
3089 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
3090 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_noop, | |
3091 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, | |
3092 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
3093 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
3094 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, | |
3095 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
3096 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
695e12f8 BH |
3097 | }; |
3098 | ||
496c262c AA |
3099 | /* |
3100 | * Calculate the total amount of memory that the compound response has taken | |
3101 | * after encoding the current operation. | |
3102 | * | |
3103 | * pad: add on 8 bytes for the next operation's op_code and status so that | |
3104 | * there is room to cache a failure on the next operation. | |
3105 | * | |
3106 | * Compare this length to the session se_fmaxresp_cached. | |
3107 | * | |
3108 | * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so | |
3109 | * will be at least a page and will therefore hold the xdr_buf head. | |
3110 | */ | |
3111 | static int nfsd4_check_drc_limit(struct nfsd4_compoundres *resp) | |
3112 | { | |
3113 | int status = 0; | |
3114 | struct xdr_buf *xb = &resp->rqstp->rq_res; | |
3115 | struct nfsd4_compoundargs *args = resp->rqstp->rq_argp; | |
3116 | struct nfsd4_session *session = NULL; | |
3117 | struct nfsd4_slot *slot = resp->cstate.slot; | |
3118 | u32 length, tlen = 0, pad = 8; | |
3119 | ||
3120 | if (!nfsd4_has_session(&resp->cstate)) | |
3121 | return status; | |
3122 | ||
3123 | session = resp->cstate.session; | |
3124 | if (session == NULL || slot->sl_cache_entry.ce_cachethis == 0) | |
3125 | return status; | |
3126 | ||
3127 | if (resp->opcnt >= args->opcnt) | |
3128 | pad = 0; /* this is the last operation */ | |
3129 | ||
3130 | if (xb->page_len == 0) { | |
3131 | length = (char *)resp->p - (char *)xb->head[0].iov_base + pad; | |
3132 | } else { | |
3133 | if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0) | |
3134 | tlen = (char *)resp->p - (char *)xb->tail[0].iov_base; | |
3135 | ||
3136 | length = xb->head[0].iov_len + xb->page_len + tlen + pad; | |
3137 | } | |
3138 | dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__, | |
3139 | length, xb->page_len, tlen, pad); | |
3140 | ||
3141 | if (length <= session->se_fmaxresp_cached) | |
3142 | return status; | |
3143 | else | |
3144 | return nfserr_rep_too_big_to_cache; | |
3145 | } | |
3146 | ||
1da177e4 LT |
3147 | void |
3148 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3149 | { | |
2ebbc012 | 3150 | __be32 *statp; |
1da177e4 LT |
3151 | ENCODE_HEAD; |
3152 | ||
3153 | RESERVE_SPACE(8); | |
3154 | WRITE32(op->opnum); | |
3155 | statp = p++; /* to be backfilled at the end */ | |
3156 | ADJUST_ARGS(); | |
3157 | ||
695e12f8 BH |
3158 | if (op->opnum == OP_ILLEGAL) |
3159 | goto status; | |
3160 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || | |
3161 | !nfsd4_enc_ops[op->opnum]); | |
3162 | op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u); | |
496c262c AA |
3163 | /* nfsd4_check_drc_limit guarantees enough room for error status */ |
3164 | if (!op->status && nfsd4_check_drc_limit(resp)) | |
3165 | op->status = nfserr_rep_too_big_to_cache; | |
695e12f8 | 3166 | status: |
1da177e4 LT |
3167 | /* |
3168 | * Note: We write the status directly, instead of using WRITE32(), | |
3169 | * since it is already in network byte order. | |
3170 | */ | |
3171 | *statp = op->status; | |
3172 | } | |
3173 | ||
3174 | /* | |
3175 | * Encode the reply stored in the stateowner reply cache | |
3176 | * | |
3177 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
3178 | * previously sent already encoded operation. | |
3179 | * | |
3180 | * called with nfs4_lock_state() held | |
3181 | */ | |
3182 | void | |
3183 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3184 | { | |
3185 | ENCODE_HEAD; | |
3186 | struct nfs4_replay *rp = op->replay; | |
3187 | ||
3188 | BUG_ON(!rp); | |
3189 | ||
3190 | RESERVE_SPACE(8); | |
3191 | WRITE32(op->opnum); | |
3192 | *p++ = rp->rp_status; /* already xdr'ed */ | |
3193 | ADJUST_ARGS(); | |
3194 | ||
3195 | RESERVE_SPACE(rp->rp_buflen); | |
3196 | WRITEMEM(rp->rp_buf, rp->rp_buflen); | |
3197 | ADJUST_ARGS(); | |
3198 | } | |
3199 | ||
3200 | /* | |
3201 | * END OF "GENERIC" ENCODE ROUTINES. | |
3202 | */ | |
3203 | ||
3204 | int | |
2ebbc012 | 3205 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
3206 | { |
3207 | return xdr_ressize_check(rqstp, p); | |
3208 | } | |
3209 | ||
3210 | void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args) | |
3211 | { | |
3212 | if (args->ops != args->iops) { | |
3213 | kfree(args->ops); | |
3214 | args->ops = args->iops; | |
3215 | } | |
f99d49ad JJ |
3216 | kfree(args->tmpp); |
3217 | args->tmpp = NULL; | |
1da177e4 LT |
3218 | while (args->to_free) { |
3219 | struct tmpbuf *tb = args->to_free; | |
3220 | args->to_free = tb->next; | |
3221 | tb->release(tb->buf); | |
3222 | kfree(tb); | |
3223 | } | |
3224 | } | |
3225 | ||
3226 | int | |
2ebbc012 | 3227 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 3228 | { |
b37ad28b | 3229 | __be32 status; |
1da177e4 LT |
3230 | |
3231 | args->p = p; | |
3232 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
3233 | args->pagelist = rqstp->rq_arg.pages; | |
3234 | args->pagelen = rqstp->rq_arg.page_len; | |
3235 | args->tmpp = NULL; | |
3236 | args->to_free = NULL; | |
3237 | args->ops = args->iops; | |
3238 | args->rqstp = rqstp; | |
3239 | ||
3240 | status = nfsd4_decode_compound(args); | |
3241 | if (status) { | |
3242 | nfsd4_release_compoundargs(args); | |
3243 | } | |
3244 | return !status; | |
3245 | } | |
3246 | ||
3247 | int | |
2ebbc012 | 3248 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
3249 | { |
3250 | /* | |
3251 | * All that remains is to write the tag and operation count... | |
3252 | */ | |
3253 | struct kvec *iov; | |
3254 | p = resp->tagp; | |
3255 | *p++ = htonl(resp->taglen); | |
3256 | memcpy(p, resp->tag, resp->taglen); | |
3257 | p += XDR_QUADLEN(resp->taglen); | |
3258 | *p++ = htonl(resp->opcnt); | |
3259 | ||
3260 | if (rqstp->rq_res.page_len) | |
3261 | iov = &rqstp->rq_res.tail[0]; | |
3262 | else | |
3263 | iov = &rqstp->rq_res.head[0]; | |
3264 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; | |
3265 | BUG_ON(iov->iov_len > PAGE_SIZE); | |
6668958f | 3266 | if (nfsd4_has_session(&resp->cstate)) { |
bf864a31 AA |
3267 | if (resp->cstate.status == nfserr_replay_cache && |
3268 | !nfsd4_not_cached(resp)) { | |
da3846a2 AA |
3269 | iov->iov_len = resp->cstate.iovlen; |
3270 | } else { | |
3271 | nfsd4_store_cache_entry(resp); | |
3272 | dprintk("%s: SET SLOT STATE TO AVAILABLE\n", __func__); | |
3273 | resp->cstate.slot->sl_inuse = 0; | |
3274 | } | |
3275 | if (resp->cstate.session) | |
3276 | nfsd4_put_session(resp->cstate.session); | |
3277 | } | |
1da177e4 LT |
3278 | return 1; |
3279 | } | |
3280 | ||
3281 | /* | |
3282 | * Local variables: | |
3283 | * c-basic-offset: 8 | |
3284 | * End: | |
3285 | */ |