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