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 | ||
5a0e3ad6 | 43 | #include <linux/slab.h> |
1da177e4 | 44 | #include <linux/namei.h> |
341eb184 | 45 | #include <linux/statfs.h> |
0733d213 | 46 | #include <linux/utsname.h> |
4796f457 | 47 | #include <linux/sunrpc/svcauth_gss.h> |
9a74af21 | 48 | |
2ca72e17 BF |
49 | #include "idmap.h" |
50 | #include "acl.h" | |
9a74af21 | 51 | #include "xdr4.h" |
0a3adade | 52 | #include "vfs.h" |
1da177e4 | 53 | |
2ca72e17 | 54 | |
1da177e4 LT |
55 | #define NFSDDBG_FACILITY NFSDDBG_XDR |
56 | ||
42ca0993 BF |
57 | /* |
58 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing | |
59 | * directory in order to indicate to the client that a filesystem boundary is present | |
60 | * We use a fixed fsid for a referral | |
61 | */ | |
62 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL | |
63 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL | |
64 | ||
b37ad28b AV |
65 | static __be32 |
66 | check_filename(char *str, int len, __be32 err) | |
1da177e4 LT |
67 | { |
68 | int i; | |
69 | ||
70 | if (len == 0) | |
71 | return nfserr_inval; | |
72 | if (isdotent(str, len)) | |
73 | return err; | |
74 | for (i = 0; i < len; i++) | |
75 | if (str[i] == '/') | |
76 | return err; | |
77 | return 0; | |
78 | } | |
79 | ||
1da177e4 | 80 | #define DECODE_HEAD \ |
2ebbc012 | 81 | __be32 *p; \ |
b37ad28b | 82 | __be32 status |
1da177e4 LT |
83 | #define DECODE_TAIL \ |
84 | status = 0; \ | |
85 | out: \ | |
86 | return status; \ | |
87 | xdr_error: \ | |
817cb9d4 CL |
88 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
89 | __FILE__, __LINE__); \ | |
1da177e4 LT |
90 | status = nfserr_bad_xdr; \ |
91 | goto out | |
92 | ||
93 | #define READ32(x) (x) = ntohl(*p++) | |
94 | #define READ64(x) do { \ | |
95 | (x) = (u64)ntohl(*p++) << 32; \ | |
96 | (x) |= ntohl(*p++); \ | |
97 | } while (0) | |
98 | #define READTIME(x) do { \ | |
99 | p++; \ | |
100 | (x) = ntohl(*p++); \ | |
101 | p++; \ | |
102 | } while (0) | |
103 | #define READMEM(x,nbytes) do { \ | |
104 | x = (char *)p; \ | |
105 | p += XDR_QUADLEN(nbytes); \ | |
106 | } while (0) | |
107 | #define SAVEMEM(x,nbytes) do { \ | |
108 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
109 | savemem(argp, p, nbytes) : \ | |
110 | (char *)p)) { \ | |
817cb9d4 CL |
111 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
112 | __FILE__, __LINE__); \ | |
1da177e4 LT |
113 | goto xdr_error; \ |
114 | } \ | |
115 | p += XDR_QUADLEN(nbytes); \ | |
116 | } while (0) | |
117 | #define COPYMEM(x,nbytes) do { \ | |
118 | memcpy((x), p, nbytes); \ | |
119 | p += XDR_QUADLEN(nbytes); \ | |
120 | } while (0) | |
121 | ||
122 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ | |
123 | #define READ_BUF(nbytes) do { \ | |
124 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ | |
125 | p = argp->p; \ | |
126 | argp->p += XDR_QUADLEN(nbytes); \ | |
127 | } else if (!(p = read_buf(argp, nbytes))) { \ | |
817cb9d4 CL |
128 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
129 | __FILE__, __LINE__); \ | |
1da177e4 LT |
130 | goto xdr_error; \ |
131 | } \ | |
132 | } while (0) | |
133 | ||
ca2a05aa | 134 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
1da177e4 LT |
135 | { |
136 | /* We want more bytes than seem to be available. | |
137 | * Maybe we need a new page, maybe we have just run out | |
138 | */ | |
ca2a05aa | 139 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
2ebbc012 | 140 | __be32 *p; |
1da177e4 LT |
141 | if (avail + argp->pagelen < nbytes) |
142 | return NULL; | |
143 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ | |
144 | return NULL; | |
145 | /* ok, we can do it with the current plus the next page */ | |
146 | if (nbytes <= sizeof(argp->tmp)) | |
147 | p = argp->tmp; | |
148 | else { | |
f99d49ad | 149 | kfree(argp->tmpp); |
1da177e4 LT |
150 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
151 | if (!p) | |
152 | return NULL; | |
153 | ||
154 | } | |
ca2a05aa BF |
155 | /* |
156 | * The following memcpy is safe because read_buf is always | |
157 | * called with nbytes > avail, and the two cases above both | |
158 | * guarantee p points to at least nbytes bytes. | |
159 | */ | |
1da177e4 LT |
160 | memcpy(p, argp->p, avail); |
161 | /* step to next page */ | |
162 | argp->p = page_address(argp->pagelist[0]); | |
163 | argp->pagelist++; | |
164 | if (argp->pagelen < PAGE_SIZE) { | |
2bc3c117 | 165 | argp->end = argp->p + (argp->pagelen>>2); |
1da177e4 LT |
166 | argp->pagelen = 0; |
167 | } else { | |
2bc3c117 | 168 | argp->end = argp->p + (PAGE_SIZE>>2); |
1da177e4 LT |
169 | argp->pagelen -= PAGE_SIZE; |
170 | } | |
171 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); | |
172 | argp->p += XDR_QUADLEN(nbytes - avail); | |
173 | return p; | |
174 | } | |
175 | ||
60adfc50 AA |
176 | static int zero_clientid(clientid_t *clid) |
177 | { | |
178 | return (clid->cl_boot == 0) && (clid->cl_id == 0); | |
179 | } | |
180 | ||
1da177e4 LT |
181 | static int |
182 | defer_free(struct nfsd4_compoundargs *argp, | |
183 | void (*release)(const void *), void *p) | |
184 | { | |
185 | struct tmpbuf *tb; | |
186 | ||
187 | tb = kmalloc(sizeof(*tb), GFP_KERNEL); | |
188 | if (!tb) | |
189 | return -ENOMEM; | |
190 | tb->buf = p; | |
191 | tb->release = release; | |
192 | tb->next = argp->to_free; | |
193 | argp->to_free = tb; | |
194 | return 0; | |
195 | } | |
196 | ||
2ebbc012 | 197 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
1da177e4 | 198 | { |
1da177e4 | 199 | if (p == argp->tmp) { |
a4db5fe5 BF |
200 | p = kmalloc(nbytes, GFP_KERNEL); |
201 | if (!p) | |
202 | return NULL; | |
1da177e4 LT |
203 | memcpy(p, argp->tmp, nbytes); |
204 | } else { | |
73dff8be | 205 | BUG_ON(p != argp->tmpp); |
1da177e4 LT |
206 | argp->tmpp = NULL; |
207 | } | |
208 | if (defer_free(argp, kfree, p)) { | |
a4db5fe5 | 209 | kfree(p); |
1da177e4 LT |
210 | return NULL; |
211 | } else | |
212 | return (char *)p; | |
213 | } | |
214 | ||
b37ad28b | 215 | static __be32 |
1da177e4 LT |
216 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
217 | { | |
218 | u32 bmlen; | |
219 | DECODE_HEAD; | |
220 | ||
221 | bmval[0] = 0; | |
222 | bmval[1] = 0; | |
7e705706 | 223 | bmval[2] = 0; |
1da177e4 LT |
224 | |
225 | READ_BUF(4); | |
226 | READ32(bmlen); | |
227 | if (bmlen > 1000) | |
228 | goto xdr_error; | |
229 | ||
230 | READ_BUF(bmlen << 2); | |
231 | if (bmlen > 0) | |
232 | READ32(bmval[0]); | |
233 | if (bmlen > 1) | |
234 | READ32(bmval[1]); | |
7e705706 AA |
235 | if (bmlen > 2) |
236 | READ32(bmval[2]); | |
1da177e4 LT |
237 | |
238 | DECODE_TAIL; | |
239 | } | |
240 | ||
b37ad28b | 241 | static __be32 |
3c8e0316 | 242 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, |
c0d6fc8a | 243 | struct iattr *iattr, struct nfs4_acl **acl) |
1da177e4 LT |
244 | { |
245 | int expected_len, len = 0; | |
246 | u32 dummy32; | |
247 | char *buf; | |
b8dd7b9a | 248 | int host_err; |
1da177e4 LT |
249 | |
250 | DECODE_HEAD; | |
251 | iattr->ia_valid = 0; | |
252 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
253 | return status; | |
254 | ||
1da177e4 LT |
255 | READ_BUF(4); |
256 | READ32(expected_len); | |
257 | ||
258 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
259 | READ_BUF(8); | |
260 | len += 8; | |
261 | READ64(iattr->ia_size); | |
262 | iattr->ia_valid |= ATTR_SIZE; | |
263 | } | |
264 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
28e05dd8 BF |
265 | int nace; |
266 | struct nfs4_ace *ace; | |
1da177e4 LT |
267 | |
268 | READ_BUF(4); len += 4; | |
269 | READ32(nace); | |
270 | ||
28e05dd8 BF |
271 | if (nace > NFS4_ACL_MAX) |
272 | return nfserr_resource; | |
273 | ||
274 | *acl = nfs4_acl_new(nace); | |
1da177e4 | 275 | if (*acl == NULL) { |
b8dd7b9a | 276 | host_err = -ENOMEM; |
1da177e4 LT |
277 | goto out_nfserr; |
278 | } | |
28e05dd8 | 279 | defer_free(argp, kfree, *acl); |
1da177e4 | 280 | |
28e05dd8 BF |
281 | (*acl)->naces = nace; |
282 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { | |
1da177e4 | 283 | READ_BUF(16); len += 16; |
28e05dd8 BF |
284 | READ32(ace->type); |
285 | READ32(ace->flag); | |
286 | READ32(ace->access_mask); | |
1da177e4 LT |
287 | READ32(dummy32); |
288 | READ_BUF(dummy32); | |
289 | len += XDR_QUADLEN(dummy32) << 2; | |
290 | READMEM(buf, dummy32); | |
28e05dd8 | 291 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
3c726023 | 292 | status = nfs_ok; |
28e05dd8 BF |
293 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
294 | ace->who = 0; | |
295 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) | |
3c726023 | 296 | status = nfsd_map_name_to_gid(argp->rqstp, |
28e05dd8 | 297 | buf, dummy32, &ace->who); |
1da177e4 | 298 | else |
3c726023 | 299 | status = nfsd_map_name_to_uid(argp->rqstp, |
28e05dd8 | 300 | buf, dummy32, &ace->who); |
3c726023 BF |
301 | if (status) |
302 | return status; | |
1da177e4 LT |
303 | } |
304 | } else | |
305 | *acl = NULL; | |
306 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
307 | READ_BUF(4); | |
308 | len += 4; | |
309 | READ32(iattr->ia_mode); | |
310 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); | |
311 | iattr->ia_valid |= ATTR_MODE; | |
312 | } | |
313 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
314 | READ_BUF(4); | |
315 | len += 4; | |
316 | READ32(dummy32); | |
317 | READ_BUF(dummy32); | |
318 | len += (XDR_QUADLEN(dummy32) << 2); | |
319 | READMEM(buf, dummy32); | |
47c85291 N |
320 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
321 | return status; | |
1da177e4 LT |
322 | iattr->ia_valid |= ATTR_UID; |
323 | } | |
324 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
325 | READ_BUF(4); | |
326 | len += 4; | |
327 | READ32(dummy32); | |
328 | READ_BUF(dummy32); | |
329 | len += (XDR_QUADLEN(dummy32) << 2); | |
330 | READMEM(buf, dummy32); | |
47c85291 N |
331 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
332 | return status; | |
1da177e4 LT |
333 | iattr->ia_valid |= ATTR_GID; |
334 | } | |
335 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
336 | READ_BUF(4); | |
337 | len += 4; | |
338 | READ32(dummy32); | |
339 | switch (dummy32) { | |
340 | case NFS4_SET_TO_CLIENT_TIME: | |
341 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
342 | all 32 bits of 'nseconds'. */ | |
343 | READ_BUF(12); | |
344 | len += 12; | |
345 | READ32(dummy32); | |
346 | if (dummy32) | |
347 | return nfserr_inval; | |
348 | READ32(iattr->ia_atime.tv_sec); | |
349 | READ32(iattr->ia_atime.tv_nsec); | |
350 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) | |
351 | return nfserr_inval; | |
352 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); | |
353 | break; | |
354 | case NFS4_SET_TO_SERVER_TIME: | |
355 | iattr->ia_valid |= ATTR_ATIME; | |
356 | break; | |
357 | default: | |
358 | goto xdr_error; | |
359 | } | |
360 | } | |
1da177e4 LT |
361 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
362 | READ_BUF(4); | |
363 | len += 4; | |
364 | READ32(dummy32); | |
365 | switch (dummy32) { | |
366 | case NFS4_SET_TO_CLIENT_TIME: | |
367 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
368 | all 32 bits of 'nseconds'. */ | |
369 | READ_BUF(12); | |
370 | len += 12; | |
371 | READ32(dummy32); | |
372 | if (dummy32) | |
373 | return nfserr_inval; | |
374 | READ32(iattr->ia_mtime.tv_sec); | |
375 | READ32(iattr->ia_mtime.tv_nsec); | |
376 | if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) | |
377 | return nfserr_inval; | |
378 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); | |
379 | break; | |
380 | case NFS4_SET_TO_SERVER_TIME: | |
381 | iattr->ia_valid |= ATTR_MTIME; | |
382 | break; | |
383 | default: | |
384 | goto xdr_error; | |
385 | } | |
386 | } | |
3c8e0316 YZ |
387 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
388 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 | |
389 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) | |
390 | READ_BUF(expected_len - len); | |
391 | else if (len != expected_len) | |
1da177e4 LT |
392 | goto xdr_error; |
393 | ||
394 | DECODE_TAIL; | |
395 | ||
396 | out_nfserr: | |
b8dd7b9a | 397 | status = nfserrno(host_err); |
1da177e4 LT |
398 | goto out; |
399 | } | |
400 | ||
e31a1b66 BH |
401 | static __be32 |
402 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
403 | { | |
404 | DECODE_HEAD; | |
405 | ||
406 | READ_BUF(sizeof(stateid_t)); | |
407 | READ32(sid->si_generation); | |
408 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
409 | ||
410 | DECODE_TAIL; | |
411 | } | |
412 | ||
b37ad28b | 413 | static __be32 |
1da177e4 LT |
414 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
415 | { | |
416 | DECODE_HEAD; | |
417 | ||
418 | READ_BUF(4); | |
419 | READ32(access->ac_req_access); | |
420 | ||
421 | DECODE_TAIL; | |
422 | } | |
423 | ||
1d1bc8f2 BF |
424 | static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) |
425 | { | |
426 | DECODE_HEAD; | |
427 | u32 dummy; | |
428 | ||
429 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 8); | |
430 | COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
431 | READ32(bcts->dir); | |
432 | /* XXX: Perhaps Tom Tucker could help us figure out how we | |
433 | * should be using ctsa_use_conn_in_rdma_mode: */ | |
434 | READ32(dummy); | |
435 | ||
436 | DECODE_TAIL; | |
437 | } | |
438 | ||
b37ad28b | 439 | static __be32 |
1da177e4 LT |
440 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
441 | { | |
442 | DECODE_HEAD; | |
443 | ||
444 | close->cl_stateowner = NULL; | |
e31a1b66 | 445 | READ_BUF(4); |
1da177e4 | 446 | READ32(close->cl_seqid); |
e31a1b66 | 447 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
1da177e4 LT |
448 | |
449 | DECODE_TAIL; | |
450 | } | |
451 | ||
452 | ||
b37ad28b | 453 | static __be32 |
1da177e4 LT |
454 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
455 | { | |
456 | DECODE_HEAD; | |
457 | ||
458 | READ_BUF(12); | |
459 | READ64(commit->co_offset); | |
460 | READ32(commit->co_count); | |
461 | ||
462 | DECODE_TAIL; | |
463 | } | |
464 | ||
b37ad28b | 465 | static __be32 |
1da177e4 LT |
466 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
467 | { | |
468 | DECODE_HEAD; | |
469 | ||
470 | READ_BUF(4); | |
471 | READ32(create->cr_type); | |
472 | switch (create->cr_type) { | |
473 | case NF4LNK: | |
474 | READ_BUF(4); | |
475 | READ32(create->cr_linklen); | |
476 | READ_BUF(create->cr_linklen); | |
477 | SAVEMEM(create->cr_linkname, create->cr_linklen); | |
478 | break; | |
479 | case NF4BLK: | |
480 | case NF4CHR: | |
481 | READ_BUF(8); | |
482 | READ32(create->cr_specdata1); | |
483 | READ32(create->cr_specdata2); | |
484 | break; | |
485 | case NF4SOCK: | |
486 | case NF4FIFO: | |
487 | case NF4DIR: | |
488 | default: | |
489 | break; | |
490 | } | |
491 | ||
492 | READ_BUF(4); | |
493 | READ32(create->cr_namelen); | |
494 | READ_BUF(create->cr_namelen); | |
495 | SAVEMEM(create->cr_name, create->cr_namelen); | |
496 | if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval))) | |
497 | return status; | |
498 | ||
3c8e0316 YZ |
499 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
500 | &create->cr_acl); | |
c0d6fc8a | 501 | if (status) |
1da177e4 LT |
502 | goto out; |
503 | ||
504 | DECODE_TAIL; | |
505 | } | |
506 | ||
b37ad28b | 507 | static inline __be32 |
1da177e4 LT |
508 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
509 | { | |
e31a1b66 | 510 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
1da177e4 LT |
511 | } |
512 | ||
b37ad28b | 513 | static inline __be32 |
1da177e4 LT |
514 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
515 | { | |
516 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
517 | } | |
518 | ||
b37ad28b | 519 | static __be32 |
1da177e4 LT |
520 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
521 | { | |
522 | DECODE_HEAD; | |
523 | ||
524 | READ_BUF(4); | |
525 | READ32(link->li_namelen); | |
526 | READ_BUF(link->li_namelen); | |
527 | SAVEMEM(link->li_name, link->li_namelen); | |
528 | if ((status = check_filename(link->li_name, link->li_namelen, nfserr_inval))) | |
529 | return status; | |
530 | ||
531 | DECODE_TAIL; | |
532 | } | |
533 | ||
b37ad28b | 534 | static __be32 |
1da177e4 LT |
535 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
536 | { | |
537 | DECODE_HEAD; | |
538 | ||
3a65588a | 539 | lock->lk_replay_owner = NULL; |
1da177e4 LT |
540 | /* |
541 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
542 | */ | |
543 | READ_BUF(28); | |
544 | READ32(lock->lk_type); | |
545 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) | |
546 | goto xdr_error; | |
547 | READ32(lock->lk_reclaim); | |
548 | READ64(lock->lk_offset); | |
549 | READ64(lock->lk_length); | |
550 | READ32(lock->lk_is_new); | |
551 | ||
552 | if (lock->lk_is_new) { | |
e31a1b66 | 553 | READ_BUF(4); |
1da177e4 | 554 | READ32(lock->lk_new_open_seqid); |
e31a1b66 BH |
555 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
556 | if (status) | |
557 | return status; | |
558 | READ_BUF(8 + sizeof(clientid_t)); | |
1da177e4 LT |
559 | READ32(lock->lk_new_lock_seqid); |
560 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); | |
561 | READ32(lock->lk_new_owner.len); | |
562 | READ_BUF(lock->lk_new_owner.len); | |
563 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
564 | } else { | |
e31a1b66 BH |
565 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
566 | if (status) | |
567 | return status; | |
568 | READ_BUF(4); | |
1da177e4 LT |
569 | READ32(lock->lk_old_lock_seqid); |
570 | } | |
571 | ||
572 | DECODE_TAIL; | |
573 | } | |
574 | ||
b37ad28b | 575 | static __be32 |
1da177e4 LT |
576 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
577 | { | |
578 | DECODE_HEAD; | |
579 | ||
580 | READ_BUF(32); | |
581 | READ32(lockt->lt_type); | |
582 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) | |
583 | goto xdr_error; | |
584 | READ64(lockt->lt_offset); | |
585 | READ64(lockt->lt_length); | |
586 | COPYMEM(&lockt->lt_clientid, 8); | |
587 | READ32(lockt->lt_owner.len); | |
588 | READ_BUF(lockt->lt_owner.len); | |
589 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
590 | ||
60adfc50 AA |
591 | if (argp->minorversion && !zero_clientid(&lockt->lt_clientid)) |
592 | return nfserr_inval; | |
1da177e4 LT |
593 | DECODE_TAIL; |
594 | } | |
595 | ||
b37ad28b | 596 | static __be32 |
1da177e4 LT |
597 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
598 | { | |
599 | DECODE_HEAD; | |
600 | ||
601 | locku->lu_stateowner = NULL; | |
e31a1b66 | 602 | READ_BUF(8); |
1da177e4 LT |
603 | READ32(locku->lu_type); |
604 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) | |
605 | goto xdr_error; | |
606 | READ32(locku->lu_seqid); | |
e31a1b66 BH |
607 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
608 | if (status) | |
609 | return status; | |
610 | READ_BUF(16); | |
1da177e4 LT |
611 | READ64(locku->lu_offset); |
612 | READ64(locku->lu_length); | |
613 | ||
614 | DECODE_TAIL; | |
615 | } | |
616 | ||
b37ad28b | 617 | static __be32 |
1da177e4 LT |
618 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
619 | { | |
620 | DECODE_HEAD; | |
621 | ||
622 | READ_BUF(4); | |
623 | READ32(lookup->lo_len); | |
624 | READ_BUF(lookup->lo_len); | |
625 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
626 | if ((status = check_filename(lookup->lo_name, lookup->lo_len, nfserr_noent))) | |
627 | return status; | |
628 | ||
629 | DECODE_TAIL; | |
630 | } | |
631 | ||
b37ad28b | 632 | static __be32 |
1da177e4 LT |
633 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
634 | { | |
635 | DECODE_HEAD; | |
636 | ||
637 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
638 | open->op_iattr.ia_valid = 0; | |
639 | open->op_stateowner = NULL; | |
640 | ||
641 | /* seqid, share_access, share_deny, clientid, ownerlen */ | |
642 | READ_BUF(16 + sizeof(clientid_t)); | |
643 | READ32(open->op_seqid); | |
644 | READ32(open->op_share_access); | |
645 | READ32(open->op_share_deny); | |
646 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); | |
647 | READ32(open->op_owner.len); | |
648 | ||
649 | /* owner, open_flag */ | |
650 | READ_BUF(open->op_owner.len + 4); | |
651 | SAVEMEM(open->op_owner.data, open->op_owner.len); | |
652 | READ32(open->op_create); | |
653 | switch (open->op_create) { | |
654 | case NFS4_OPEN_NOCREATE: | |
655 | break; | |
656 | case NFS4_OPEN_CREATE: | |
657 | READ_BUF(4); | |
658 | READ32(open->op_createmode); | |
659 | switch (open->op_createmode) { | |
660 | case NFS4_CREATE_UNCHECKED: | |
661 | case NFS4_CREATE_GUARDED: | |
c0d6fc8a | 662 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
3c8e0316 | 663 | &open->op_iattr, &open->op_acl); |
c0d6fc8a | 664 | if (status) |
1da177e4 LT |
665 | goto out; |
666 | break; | |
667 | case NFS4_CREATE_EXCLUSIVE: | |
668 | READ_BUF(8); | |
669 | COPYMEM(open->op_verf.data, 8); | |
670 | break; | |
79fb54ab BH |
671 | case NFS4_CREATE_EXCLUSIVE4_1: |
672 | if (argp->minorversion < 1) | |
673 | goto xdr_error; | |
674 | READ_BUF(8); | |
675 | COPYMEM(open->op_verf.data, 8); | |
676 | status = nfsd4_decode_fattr(argp, open->op_bmval, | |
3c8e0316 | 677 | &open->op_iattr, &open->op_acl); |
79fb54ab BH |
678 | if (status) |
679 | goto out; | |
680 | break; | |
1da177e4 LT |
681 | default: |
682 | goto xdr_error; | |
683 | } | |
684 | break; | |
685 | default: | |
686 | goto xdr_error; | |
687 | } | |
688 | ||
689 | /* open_claim */ | |
690 | READ_BUF(4); | |
691 | READ32(open->op_claim_type); | |
692 | switch (open->op_claim_type) { | |
693 | case NFS4_OPEN_CLAIM_NULL: | |
694 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
695 | READ_BUF(4); | |
696 | READ32(open->op_fname.len); | |
697 | READ_BUF(open->op_fname.len); | |
698 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
699 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) | |
700 | return status; | |
701 | break; | |
702 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
703 | READ_BUF(4); | |
704 | READ32(open->op_delegate_type); | |
705 | break; | |
706 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
e31a1b66 BH |
707 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
708 | if (status) | |
709 | return status; | |
710 | READ_BUF(4); | |
1da177e4 LT |
711 | READ32(open->op_fname.len); |
712 | READ_BUF(open->op_fname.len); | |
713 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
714 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) | |
715 | return status; | |
716 | break; | |
717 | default: | |
718 | goto xdr_error; | |
719 | } | |
720 | ||
721 | DECODE_TAIL; | |
722 | } | |
723 | ||
b37ad28b | 724 | static __be32 |
1da177e4 LT |
725 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
726 | { | |
727 | DECODE_HEAD; | |
728 | ||
729 | open_conf->oc_stateowner = NULL; | |
e31a1b66 BH |
730 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
731 | if (status) | |
732 | return status; | |
733 | READ_BUF(4); | |
1da177e4 LT |
734 | READ32(open_conf->oc_seqid); |
735 | ||
736 | DECODE_TAIL; | |
737 | } | |
738 | ||
b37ad28b | 739 | static __be32 |
1da177e4 LT |
740 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
741 | { | |
742 | DECODE_HEAD; | |
743 | ||
744 | open_down->od_stateowner = NULL; | |
e31a1b66 BH |
745 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
746 | if (status) | |
747 | return status; | |
748 | READ_BUF(12); | |
1da177e4 LT |
749 | READ32(open_down->od_seqid); |
750 | READ32(open_down->od_share_access); | |
751 | READ32(open_down->od_share_deny); | |
752 | ||
753 | DECODE_TAIL; | |
754 | } | |
755 | ||
b37ad28b | 756 | static __be32 |
1da177e4 LT |
757 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
758 | { | |
759 | DECODE_HEAD; | |
760 | ||
761 | READ_BUF(4); | |
762 | READ32(putfh->pf_fhlen); | |
763 | if (putfh->pf_fhlen > NFS4_FHSIZE) | |
764 | goto xdr_error; | |
765 | READ_BUF(putfh->pf_fhlen); | |
766 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
767 | ||
768 | DECODE_TAIL; | |
769 | } | |
770 | ||
b37ad28b | 771 | static __be32 |
1da177e4 LT |
772 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
773 | { | |
774 | DECODE_HEAD; | |
775 | ||
e31a1b66 BH |
776 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
777 | if (status) | |
778 | return status; | |
779 | READ_BUF(12); | |
1da177e4 LT |
780 | READ64(read->rd_offset); |
781 | READ32(read->rd_length); | |
782 | ||
783 | DECODE_TAIL; | |
784 | } | |
785 | ||
b37ad28b | 786 | static __be32 |
1da177e4 LT |
787 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
788 | { | |
789 | DECODE_HEAD; | |
790 | ||
791 | READ_BUF(24); | |
792 | READ64(readdir->rd_cookie); | |
793 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); | |
794 | READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ | |
795 | READ32(readdir->rd_maxcount); | |
796 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) | |
797 | goto out; | |
798 | ||
799 | DECODE_TAIL; | |
800 | } | |
801 | ||
b37ad28b | 802 | static __be32 |
1da177e4 LT |
803 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
804 | { | |
805 | DECODE_HEAD; | |
806 | ||
807 | READ_BUF(4); | |
808 | READ32(remove->rm_namelen); | |
809 | READ_BUF(remove->rm_namelen); | |
810 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
811 | if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent))) | |
812 | return status; | |
813 | ||
814 | DECODE_TAIL; | |
815 | } | |
816 | ||
b37ad28b | 817 | static __be32 |
1da177e4 LT |
818 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
819 | { | |
820 | DECODE_HEAD; | |
821 | ||
822 | READ_BUF(4); | |
823 | READ32(rename->rn_snamelen); | |
824 | READ_BUF(rename->rn_snamelen + 4); | |
825 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); | |
826 | READ32(rename->rn_tnamelen); | |
827 | READ_BUF(rename->rn_tnamelen); | |
828 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
829 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent))) | |
830 | return status; | |
831 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval))) | |
832 | return status; | |
833 | ||
834 | DECODE_TAIL; | |
835 | } | |
836 | ||
b37ad28b | 837 | static __be32 |
1da177e4 LT |
838 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
839 | { | |
840 | DECODE_HEAD; | |
841 | ||
842 | READ_BUF(sizeof(clientid_t)); | |
843 | COPYMEM(clientid, sizeof(clientid_t)); | |
844 | ||
845 | DECODE_TAIL; | |
846 | } | |
847 | ||
dcb488a3 AA |
848 | static __be32 |
849 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
850 | struct nfsd4_secinfo *secinfo) | |
851 | { | |
852 | DECODE_HEAD; | |
853 | ||
854 | READ_BUF(4); | |
855 | READ32(secinfo->si_namelen); | |
856 | READ_BUF(secinfo->si_namelen); | |
857 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
858 | status = check_filename(secinfo->si_name, secinfo->si_namelen, | |
859 | nfserr_noent); | |
860 | if (status) | |
861 | return status; | |
862 | DECODE_TAIL; | |
863 | } | |
864 | ||
04f4ad16 BF |
865 | static __be32 |
866 | nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, | |
867 | struct nfsd4_secinfo_no_name *sin) | |
868 | { | |
869 | DECODE_HEAD; | |
870 | ||
871 | READ_BUF(4); | |
872 | READ32(sin->sin_style); | |
873 | DECODE_TAIL; | |
874 | } | |
875 | ||
b37ad28b | 876 | static __be32 |
1da177e4 LT |
877 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
878 | { | |
e31a1b66 | 879 | __be32 status; |
1da177e4 | 880 | |
e31a1b66 BH |
881 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
882 | if (status) | |
883 | return status; | |
3c8e0316 YZ |
884 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
885 | &setattr->sa_acl); | |
1da177e4 LT |
886 | } |
887 | ||
b37ad28b | 888 | static __be32 |
1da177e4 LT |
889 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
890 | { | |
891 | DECODE_HEAD; | |
892 | ||
893 | READ_BUF(12); | |
894 | COPYMEM(setclientid->se_verf.data, 8); | |
895 | READ32(setclientid->se_namelen); | |
896 | ||
897 | READ_BUF(setclientid->se_namelen + 8); | |
898 | SAVEMEM(setclientid->se_name, setclientid->se_namelen); | |
899 | READ32(setclientid->se_callback_prog); | |
900 | READ32(setclientid->se_callback_netid_len); | |
901 | ||
902 | READ_BUF(setclientid->se_callback_netid_len + 4); | |
903 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); | |
904 | READ32(setclientid->se_callback_addr_len); | |
905 | ||
906 | READ_BUF(setclientid->se_callback_addr_len + 4); | |
907 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); | |
908 | READ32(setclientid->se_callback_ident); | |
909 | ||
910 | DECODE_TAIL; | |
911 | } | |
912 | ||
b37ad28b | 913 | static __be32 |
1da177e4 LT |
914 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
915 | { | |
916 | DECODE_HEAD; | |
917 | ||
918 | READ_BUF(8 + sizeof(nfs4_verifier)); | |
919 | COPYMEM(&scd_c->sc_clientid, 8); | |
920 | COPYMEM(&scd_c->sc_confirm, sizeof(nfs4_verifier)); | |
921 | ||
922 | DECODE_TAIL; | |
923 | } | |
924 | ||
925 | /* Also used for NVERIFY */ | |
b37ad28b | 926 | static __be32 |
1da177e4 LT |
927 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
928 | { | |
929 | #if 0 | |
930 | struct nfsd4_compoundargs save = { | |
931 | .p = argp->p, | |
932 | .end = argp->end, | |
933 | .rqstp = argp->rqstp, | |
934 | }; | |
935 | u32 ve_bmval[2]; | |
936 | struct iattr ve_iattr; /* request */ | |
937 | struct nfs4_acl *ve_acl; /* request */ | |
938 | #endif | |
939 | DECODE_HEAD; | |
940 | ||
941 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
942 | goto out; | |
943 | ||
944 | /* For convenience's sake, we compare raw xdr'd attributes in | |
945 | * nfsd4_proc_verify; however we still decode here just to return | |
946 | * correct error in case of bad xdr. */ | |
947 | #if 0 | |
948 | status = nfsd4_decode_fattr(ve_bmval, &ve_iattr, &ve_acl); | |
949 | if (status == nfserr_inval) { | |
950 | status = nfserrno(status); | |
951 | goto out; | |
952 | } | |
953 | #endif | |
954 | READ_BUF(4); | |
955 | READ32(verify->ve_attrlen); | |
956 | READ_BUF(verify->ve_attrlen); | |
957 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
958 | ||
959 | DECODE_TAIL; | |
960 | } | |
961 | ||
b37ad28b | 962 | static __be32 |
1da177e4 LT |
963 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
964 | { | |
965 | int avail; | |
966 | int v; | |
967 | int len; | |
968 | DECODE_HEAD; | |
969 | ||
e31a1b66 BH |
970 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
971 | if (status) | |
972 | return status; | |
973 | READ_BUF(16); | |
1da177e4 LT |
974 | READ64(write->wr_offset); |
975 | READ32(write->wr_stable_how); | |
976 | if (write->wr_stable_how > 2) | |
977 | goto xdr_error; | |
978 | READ32(write->wr_buflen); | |
979 | ||
980 | /* Sorry .. no magic macros for this.. * | |
981 | * READ_BUF(write->wr_buflen); | |
982 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
983 | */ | |
984 | avail = (char*)argp->end - (char*)argp->p; | |
985 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
986 | dprintk("NFSD: xdr error (%s:%d)\n", |
987 | __FILE__, __LINE__); | |
1da177e4 LT |
988 | goto xdr_error; |
989 | } | |
3cc03b16 N |
990 | argp->rqstp->rq_vec[0].iov_base = p; |
991 | argp->rqstp->rq_vec[0].iov_len = avail; | |
1da177e4 LT |
992 | v = 0; |
993 | len = write->wr_buflen; | |
3cc03b16 N |
994 | while (len > argp->rqstp->rq_vec[v].iov_len) { |
995 | len -= argp->rqstp->rq_vec[v].iov_len; | |
1da177e4 | 996 | v++; |
3cc03b16 | 997 | argp->rqstp->rq_vec[v].iov_base = page_address(argp->pagelist[0]); |
1da177e4 LT |
998 | argp->pagelist++; |
999 | if (argp->pagelen >= PAGE_SIZE) { | |
3cc03b16 | 1000 | argp->rqstp->rq_vec[v].iov_len = PAGE_SIZE; |
1da177e4 LT |
1001 | argp->pagelen -= PAGE_SIZE; |
1002 | } else { | |
3cc03b16 | 1003 | argp->rqstp->rq_vec[v].iov_len = argp->pagelen; |
1da177e4 LT |
1004 | argp->pagelen -= len; |
1005 | } | |
1006 | } | |
2ebbc012 AV |
1007 | argp->end = (__be32*) (argp->rqstp->rq_vec[v].iov_base + argp->rqstp->rq_vec[v].iov_len); |
1008 | argp->p = (__be32*) (argp->rqstp->rq_vec[v].iov_base + (XDR_QUADLEN(len) << 2)); | |
3cc03b16 | 1009 | argp->rqstp->rq_vec[v].iov_len = len; |
1da177e4 LT |
1010 | write->wr_vlen = v+1; |
1011 | ||
1012 | DECODE_TAIL; | |
1013 | } | |
1014 | ||
b37ad28b | 1015 | static __be32 |
1da177e4 LT |
1016 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
1017 | { | |
1018 | DECODE_HEAD; | |
1019 | ||
1020 | READ_BUF(12); | |
1021 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
1022 | READ32(rlockowner->rl_owner.len); | |
1023 | READ_BUF(rlockowner->rl_owner.len); | |
1024 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
1025 | ||
60adfc50 AA |
1026 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1027 | return nfserr_inval; | |
1da177e4 LT |
1028 | DECODE_TAIL; |
1029 | } | |
1030 | ||
2db134eb AA |
1031 | static __be32 |
1032 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1033 | struct nfsd4_exchange_id *exid) |
2db134eb | 1034 | { |
5afa040b | 1035 | int dummy, tmp; |
0733d213 AA |
1036 | DECODE_HEAD; |
1037 | ||
1038 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1039 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1040 | ||
1041 | READ_BUF(4); | |
1042 | READ32(exid->clname.len); | |
1043 | ||
1044 | READ_BUF(exid->clname.len); | |
1045 | SAVEMEM(exid->clname.data, exid->clname.len); | |
1046 | ||
1047 | READ_BUF(4); | |
1048 | READ32(exid->flags); | |
1049 | ||
1050 | /* Ignore state_protect4_a */ | |
1051 | READ_BUF(4); | |
1052 | READ32(exid->spa_how); | |
1053 | switch (exid->spa_how) { | |
1054 | case SP4_NONE: | |
1055 | break; | |
1056 | case SP4_MACH_CRED: | |
1057 | /* spo_must_enforce */ | |
1058 | READ_BUF(4); | |
1059 | READ32(dummy); | |
1060 | READ_BUF(dummy * 4); | |
1061 | p += dummy; | |
1062 | ||
1063 | /* spo_must_allow */ | |
1064 | READ_BUF(4); | |
1065 | READ32(dummy); | |
1066 | READ_BUF(dummy * 4); | |
1067 | p += dummy; | |
1068 | break; | |
1069 | case SP4_SSV: | |
1070 | /* ssp_ops */ | |
1071 | READ_BUF(4); | |
1072 | READ32(dummy); | |
1073 | READ_BUF(dummy * 4); | |
1074 | p += dummy; | |
1075 | ||
1076 | READ_BUF(4); | |
1077 | READ32(dummy); | |
1078 | READ_BUF(dummy * 4); | |
1079 | p += dummy; | |
1080 | ||
1081 | /* ssp_hash_algs<> */ | |
1082 | READ_BUF(4); | |
5afa040b MJ |
1083 | READ32(tmp); |
1084 | while (tmp--) { | |
1085 | READ_BUF(4); | |
1086 | READ32(dummy); | |
1087 | READ_BUF(dummy); | |
1088 | p += XDR_QUADLEN(dummy); | |
1089 | } | |
0733d213 AA |
1090 | |
1091 | /* ssp_encr_algs<> */ | |
1092 | READ_BUF(4); | |
5afa040b MJ |
1093 | READ32(tmp); |
1094 | while (tmp--) { | |
1095 | READ_BUF(4); | |
1096 | READ32(dummy); | |
1097 | READ_BUF(dummy); | |
1098 | p += XDR_QUADLEN(dummy); | |
1099 | } | |
0733d213 AA |
1100 | |
1101 | /* ssp_window and ssp_num_gss_handles */ | |
1102 | READ_BUF(8); | |
1103 | READ32(dummy); | |
1104 | READ32(dummy); | |
1105 | break; | |
1106 | default: | |
1107 | goto xdr_error; | |
1108 | } | |
1109 | ||
1110 | /* Ignore Implementation ID */ | |
1111 | READ_BUF(4); /* nfs_impl_id4 array length */ | |
1112 | READ32(dummy); | |
1113 | ||
1114 | if (dummy > 1) | |
1115 | goto xdr_error; | |
1116 | ||
1117 | if (dummy == 1) { | |
1118 | /* nii_domain */ | |
1119 | READ_BUF(4); | |
1120 | READ32(dummy); | |
1121 | READ_BUF(dummy); | |
1122 | p += XDR_QUADLEN(dummy); | |
1123 | ||
1124 | /* nii_name */ | |
1125 | READ_BUF(4); | |
1126 | READ32(dummy); | |
1127 | READ_BUF(dummy); | |
1128 | p += XDR_QUADLEN(dummy); | |
1129 | ||
1130 | /* nii_date */ | |
1131 | READ_BUF(12); | |
1132 | p += 3; | |
1133 | } | |
1134 | DECODE_TAIL; | |
2db134eb AA |
1135 | } |
1136 | ||
1137 | static __be32 | |
1138 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1139 | struct nfsd4_create_session *sess) | |
1140 | { | |
ec6b5d7b AA |
1141 | DECODE_HEAD; |
1142 | ||
1143 | u32 dummy; | |
1144 | char *machine_name; | |
3ec07aa9 | 1145 | int i, j; |
ec6b5d7b AA |
1146 | int nr_secflavs; |
1147 | ||
1148 | READ_BUF(16); | |
1149 | COPYMEM(&sess->clientid, 8); | |
1150 | READ32(sess->seqid); | |
1151 | READ32(sess->flags); | |
1152 | ||
1153 | /* Fore channel attrs */ | |
1154 | READ_BUF(28); | |
1155 | READ32(dummy); /* headerpadsz is always 0 */ | |
1156 | READ32(sess->fore_channel.maxreq_sz); | |
1157 | READ32(sess->fore_channel.maxresp_sz); | |
1158 | READ32(sess->fore_channel.maxresp_cached); | |
1159 | READ32(sess->fore_channel.maxops); | |
1160 | READ32(sess->fore_channel.maxreqs); | |
1161 | READ32(sess->fore_channel.nr_rdma_attrs); | |
1162 | if (sess->fore_channel.nr_rdma_attrs == 1) { | |
1163 | READ_BUF(4); | |
1164 | READ32(sess->fore_channel.rdma_attrs); | |
1165 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { | |
1166 | dprintk("Too many fore channel attr bitmaps!\n"); | |
1167 | goto xdr_error; | |
1168 | } | |
1169 | ||
1170 | /* Back channel attrs */ | |
1171 | READ_BUF(28); | |
1172 | READ32(dummy); /* headerpadsz is always 0 */ | |
1173 | READ32(sess->back_channel.maxreq_sz); | |
1174 | READ32(sess->back_channel.maxresp_sz); | |
1175 | READ32(sess->back_channel.maxresp_cached); | |
1176 | READ32(sess->back_channel.maxops); | |
1177 | READ32(sess->back_channel.maxreqs); | |
1178 | READ32(sess->back_channel.nr_rdma_attrs); | |
1179 | if (sess->back_channel.nr_rdma_attrs == 1) { | |
1180 | READ_BUF(4); | |
1181 | READ32(sess->back_channel.rdma_attrs); | |
1182 | } else if (sess->back_channel.nr_rdma_attrs > 1) { | |
1183 | dprintk("Too many back channel attr bitmaps!\n"); | |
1184 | goto xdr_error; | |
1185 | } | |
1186 | ||
1187 | READ_BUF(8); | |
1188 | READ32(sess->callback_prog); | |
1189 | ||
1190 | /* callback_sec_params4 */ | |
1191 | READ32(nr_secflavs); | |
1192 | for (i = 0; i < nr_secflavs; ++i) { | |
1193 | READ_BUF(4); | |
1194 | READ32(dummy); | |
1195 | switch (dummy) { | |
1196 | case RPC_AUTH_NULL: | |
1197 | /* Nothing to read */ | |
1198 | break; | |
1199 | case RPC_AUTH_UNIX: | |
1200 | READ_BUF(8); | |
1201 | /* stamp */ | |
1202 | READ32(dummy); | |
1203 | ||
1204 | /* machine name */ | |
1205 | READ32(dummy); | |
1206 | READ_BUF(dummy); | |
1207 | SAVEMEM(machine_name, dummy); | |
1208 | ||
1209 | /* uid, gid */ | |
1210 | READ_BUF(8); | |
1211 | READ32(sess->uid); | |
1212 | READ32(sess->gid); | |
1213 | ||
1214 | /* more gids */ | |
1215 | READ_BUF(4); | |
1216 | READ32(dummy); | |
1217 | READ_BUF(dummy * 4); | |
3ec07aa9 | 1218 | for (j = 0; j < dummy; ++j) |
ec6b5d7b AA |
1219 | READ32(dummy); |
1220 | break; | |
1221 | case RPC_AUTH_GSS: | |
1222 | dprintk("RPC_AUTH_GSS callback secflavor " | |
1223 | "not supported!\n"); | |
1224 | READ_BUF(8); | |
1225 | /* gcbp_service */ | |
1226 | READ32(dummy); | |
1227 | /* gcbp_handle_from_server */ | |
1228 | READ32(dummy); | |
1229 | READ_BUF(dummy); | |
1230 | p += XDR_QUADLEN(dummy); | |
1231 | /* gcbp_handle_from_client */ | |
1232 | READ_BUF(4); | |
1233 | READ32(dummy); | |
1234 | READ_BUF(dummy); | |
1235 | p += XDR_QUADLEN(dummy); | |
1236 | break; | |
1237 | default: | |
1238 | dprintk("Illegal callback secflavor\n"); | |
1239 | return nfserr_inval; | |
1240 | } | |
1241 | } | |
1242 | DECODE_TAIL; | |
2db134eb AA |
1243 | } |
1244 | ||
1245 | static __be32 | |
1246 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, | |
1247 | struct nfsd4_destroy_session *destroy_session) | |
1248 | { | |
e10e0cfc BH |
1249 | DECODE_HEAD; |
1250 | READ_BUF(NFS4_MAX_SESSIONID_LEN); | |
1251 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1252 | ||
1253 | DECODE_TAIL; | |
2db134eb AA |
1254 | } |
1255 | ||
1256 | static __be32 | |
1257 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, | |
1258 | struct nfsd4_sequence *seq) | |
1259 | { | |
b85d4c01 BH |
1260 | DECODE_HEAD; |
1261 | ||
1262 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); | |
1263 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1264 | READ32(seq->seqid); | |
1265 | READ32(seq->slotid); | |
1266 | READ32(seq->maxslots); | |
1267 | READ32(seq->cachethis); | |
1268 | ||
1269 | DECODE_TAIL; | |
2db134eb AA |
1270 | } |
1271 | ||
4dc6ec00 BF |
1272 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) |
1273 | { | |
1274 | DECODE_HEAD; | |
1275 | ||
1276 | READ_BUF(4); | |
1277 | READ32(rc->rca_one_fs); | |
1278 | ||
1279 | DECODE_TAIL; | |
1280 | } | |
1281 | ||
347e0ad9 BH |
1282 | static __be32 |
1283 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1284 | { | |
1285 | return nfs_ok; | |
1286 | } | |
1287 | ||
3c375c6f BH |
1288 | static __be32 |
1289 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1290 | { | |
1e685ec2 | 1291 | return nfserr_notsupp; |
3c375c6f BH |
1292 | } |
1293 | ||
347e0ad9 BH |
1294 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1295 | ||
1296 | static nfsd4_dec nfsd4_dec_ops[] = { | |
ad1060c8 BF |
1297 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1298 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1299 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1300 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1301 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1302 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1303 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1304 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1305 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1306 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1307 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1308 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1309 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1310 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1311 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1312 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1313 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1314 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1315 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1316 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
a1c8c4d1 | 1317 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_noop, |
ad1060c8 BF |
1318 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1319 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1320 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1321 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1322 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1323 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1324 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1325 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1326 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1327 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1328 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1329 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1330 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1331 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1332 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1333 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
347e0ad9 BH |
1334 | }; |
1335 | ||
2db134eb | 1336 | static nfsd4_dec nfsd41_dec_ops[] = { |
9064caae RD |
1337 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1338 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1339 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1340 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1341 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1342 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1343 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1344 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1345 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1346 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1347 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1348 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1349 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1350 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1351 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1352 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1353 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1354 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1355 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1356 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
1357 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1358 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1359 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1360 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1361 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1362 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1363 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1364 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1365 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1366 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1367 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1368 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1369 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1370 | [OP_SETCLIENTID_CONFIRM]= (nfsd4_dec)nfsd4_decode_notsupp, | |
1371 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1372 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1373 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_notsupp, | |
2db134eb AA |
1374 | |
1375 | /* new operations for NFSv4.1 */ | |
9064caae | 1376 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_notsupp, |
1d1bc8f2 | 1377 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
9064caae RD |
1378 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
1379 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
1380 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
1381 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1382 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1383 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1384 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1385 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1386 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1387 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
04f4ad16 | 1388 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
9064caae RD |
1389 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
1390 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1391 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1392 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1393 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp, | |
4dc6ec00 | 1394 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
2db134eb AA |
1395 | }; |
1396 | ||
f2feb96b BH |
1397 | struct nfsd4_minorversion_ops { |
1398 | nfsd4_dec *decoders; | |
1399 | int nops; | |
1400 | }; | |
1401 | ||
1402 | static struct nfsd4_minorversion_ops nfsd4_minorversion[] = { | |
ad1060c8 | 1403 | [0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) }, |
2db134eb | 1404 | [1] = { nfsd41_dec_ops, ARRAY_SIZE(nfsd41_dec_ops) }, |
f2feb96b BH |
1405 | }; |
1406 | ||
b37ad28b | 1407 | static __be32 |
1da177e4 LT |
1408 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1409 | { | |
1410 | DECODE_HEAD; | |
1411 | struct nfsd4_op *op; | |
f2feb96b | 1412 | struct nfsd4_minorversion_ops *ops; |
1da177e4 LT |
1413 | int i; |
1414 | ||
1415 | /* | |
1416 | * XXX: According to spec, we should check the tag | |
1417 | * for UTF-8 compliance. I'm postponing this for | |
1418 | * now because it seems that some clients do use | |
1419 | * binary tags. | |
1420 | */ | |
1421 | READ_BUF(4); | |
1422 | READ32(argp->taglen); | |
1423 | READ_BUF(argp->taglen + 8); | |
1424 | SAVEMEM(argp->tag, argp->taglen); | |
1425 | READ32(argp->minorversion); | |
1426 | READ32(argp->opcnt); | |
1427 | ||
1428 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1429 | goto xdr_error; | |
1430 | if (argp->opcnt > 100) | |
1431 | goto xdr_error; | |
1432 | ||
e8c96f8c | 1433 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
1da177e4 LT |
1434 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1435 | if (!argp->ops) { | |
1436 | argp->ops = argp->iops; | |
817cb9d4 | 1437 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1438 | goto xdr_error; |
1439 | } | |
1440 | } | |
1441 | ||
f2feb96b | 1442 | if (argp->minorversion >= ARRAY_SIZE(nfsd4_minorversion)) |
30cff1ff BH |
1443 | argp->opcnt = 0; |
1444 | ||
f2feb96b | 1445 | ops = &nfsd4_minorversion[argp->minorversion]; |
1da177e4 LT |
1446 | for (i = 0; i < argp->opcnt; i++) { |
1447 | op = &argp->ops[i]; | |
1448 | op->replay = NULL; | |
1449 | ||
1450 | /* | |
1451 | * We can't use READ_BUF() here because we need to handle | |
1452 | * a missing opcode as an OP_WRITE + 1. So we need to check | |
1453 | * to see if we're truly at the end of our buffer or if there | |
1454 | * is another page we need to flip to. | |
1455 | */ | |
1456 | ||
1457 | if (argp->p == argp->end) { | |
1458 | if (argp->pagelen < 4) { | |
1459 | /* There isn't an opcode still on the wire */ | |
1460 | op->opnum = OP_WRITE + 1; | |
1461 | op->status = nfserr_bad_xdr; | |
1462 | argp->opcnt = i+1; | |
1463 | break; | |
1464 | } | |
1465 | ||
1466 | /* | |
1467 | * False alarm. We just hit a page boundary, but there | |
1468 | * is still data available. Move pointer across page | |
1469 | * boundary. *snip from READ_BUF* | |
1470 | */ | |
1471 | argp->p = page_address(argp->pagelist[0]); | |
1472 | argp->pagelist++; | |
1473 | if (argp->pagelen < PAGE_SIZE) { | |
2bc3c117 | 1474 | argp->end = argp->p + (argp->pagelen>>2); |
1da177e4 LT |
1475 | argp->pagelen = 0; |
1476 | } else { | |
2bc3c117 | 1477 | argp->end = argp->p + (PAGE_SIZE>>2); |
1da177e4 LT |
1478 | argp->pagelen -= PAGE_SIZE; |
1479 | } | |
1480 | } | |
1481 | op->opnum = ntohl(*argp->p++); | |
1482 | ||
de3cab79 | 1483 | if (op->opnum >= FIRST_NFS4_OP && op->opnum <= LAST_NFS4_OP) |
f2feb96b | 1484 | op->status = ops->decoders[op->opnum](argp, &op->u); |
347e0ad9 | 1485 | else { |
1da177e4 LT |
1486 | op->opnum = OP_ILLEGAL; |
1487 | op->status = nfserr_op_illegal; | |
1da177e4 LT |
1488 | } |
1489 | ||
1490 | if (op->status) { | |
1491 | argp->opcnt = i+1; | |
1492 | break; | |
1493 | } | |
1494 | } | |
1495 | ||
1496 | DECODE_TAIL; | |
1497 | } | |
1da177e4 | 1498 | |
1da177e4 LT |
1499 | #define WRITE32(n) *p++ = htonl(n) |
1500 | #define WRITE64(n) do { \ | |
1501 | *p++ = htonl((u32)((n) >> 32)); \ | |
1502 | *p++ = htonl((u32)(n)); \ | |
1503 | } while (0) | |
5108b276 | 1504 | #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \ |
1da177e4 LT |
1505 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ |
1506 | memcpy(p, ptr, nbytes); \ | |
1507 | p += XDR_QUADLEN(nbytes); \ | |
5108b276 | 1508 | }} while (0) |
c654b8a9 BF |
1509 | |
1510 | static void write32(__be32 **p, u32 n) | |
1511 | { | |
1512 | *(*p)++ = n; | |
1513 | } | |
1514 | ||
1515 | static void write64(__be32 **p, u64 n) | |
1516 | { | |
1517 | write32(p, (u32)(n >> 32)); | |
1518 | write32(p, (u32)n); | |
1519 | } | |
1520 | ||
1521 | static void write_change(__be32 **p, struct kstat *stat, struct inode *inode) | |
1522 | { | |
1523 | if (IS_I_VERSION(inode)) { | |
1524 | write64(p, inode->i_version); | |
1525 | } else { | |
1526 | write32(p, stat->ctime.tv_sec); | |
1527 | write32(p, stat->ctime.tv_nsec); | |
1528 | } | |
1529 | } | |
1530 | ||
1531 | static void write_cinfo(__be32 **p, struct nfsd4_change_info *c) | |
1532 | { | |
1533 | write32(p, c->atomic); | |
1534 | if (c->change_supported) { | |
1535 | write64(p, c->before_change); | |
1536 | write64(p, c->after_change); | |
1537 | } else { | |
1538 | write32(p, c->before_ctime_sec); | |
1539 | write32(p, c->before_ctime_nsec); | |
1540 | write32(p, c->after_ctime_sec); | |
1541 | write32(p, c->after_ctime_nsec); | |
1542 | } | |
1543 | } | |
1da177e4 LT |
1544 | |
1545 | #define RESERVE_SPACE(nbytes) do { \ | |
1546 | p = resp->p; \ | |
1547 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ | |
1548 | } while (0) | |
1549 | #define ADJUST_ARGS() resp->p = p | |
1550 | ||
1551 | /* | |
1552 | * Header routine to setup seqid operation replay cache | |
1553 | */ | |
1554 | #define ENCODE_SEQID_OP_HEAD \ | |
2ebbc012 | 1555 | __be32 *save; \ |
1da177e4 LT |
1556 | \ |
1557 | save = resp->p; | |
1558 | ||
1559 | /* | |
7fb64cee N |
1560 | * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This |
1561 | * is where sequence id's are incremented, and the replay cache is filled. | |
1562 | * Note that we increment sequence id's here, at the last moment, so we're sure | |
1563 | * we know whether the error to be returned is a sequence id mutating error. | |
1da177e4 LT |
1564 | */ |
1565 | ||
1566 | #define ENCODE_SEQID_OP_TAIL(stateowner) do { \ | |
1567 | if (seqid_mutating_err(nfserr) && stateowner) { \ | |
bd9aac52 | 1568 | stateowner->so_seqid++; \ |
1da177e4 LT |
1569 | stateowner->so_replay.rp_status = nfserr; \ |
1570 | stateowner->so_replay.rp_buflen = \ | |
1571 | (((char *)(resp)->p - (char *)save)); \ | |
1572 | memcpy(stateowner->so_replay.rp_buf, save, \ | |
1573 | stateowner->so_replay.rp_buflen); \ | |
1574 | } } while (0); | |
1575 | ||
81c3f413 | 1576 | /* Encode as an array of strings the string given with components |
3ad2f3fb | 1577 | * separated @sep. |
81c3f413 | 1578 | */ |
b37ad28b | 1579 | static __be32 nfsd4_encode_components(char sep, char *components, |
2ebbc012 | 1580 | __be32 **pp, int *buflen) |
81c3f413 | 1581 | { |
2ebbc012 AV |
1582 | __be32 *p = *pp; |
1583 | __be32 *countp = p; | |
81c3f413 BF |
1584 | int strlen, count=0; |
1585 | char *str, *end; | |
1586 | ||
1587 | dprintk("nfsd4_encode_components(%s)\n", components); | |
1588 | if ((*buflen -= 4) < 0) | |
1589 | return nfserr_resource; | |
1590 | WRITE32(0); /* We will fill this in with @count later */ | |
1591 | end = str = components; | |
1592 | while (*end) { | |
1593 | for (; *end && (*end != sep); end++) | |
1594 | ; /* Point to end of component */ | |
1595 | strlen = end - str; | |
1596 | if (strlen) { | |
1597 | if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0) | |
1598 | return nfserr_resource; | |
1599 | WRITE32(strlen); | |
1600 | WRITEMEM(str, strlen); | |
1601 | count++; | |
1602 | } | |
1603 | else | |
1604 | end++; | |
1605 | str = end; | |
1606 | } | |
1607 | *pp = p; | |
1608 | p = countp; | |
1609 | WRITE32(count); | |
1610 | return 0; | |
1611 | } | |
1612 | ||
1613 | /* | |
1614 | * encode a location element of a fs_locations structure | |
1615 | */ | |
b37ad28b | 1616 | static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location, |
2ebbc012 | 1617 | __be32 **pp, int *buflen) |
81c3f413 | 1618 | { |
b37ad28b | 1619 | __be32 status; |
2ebbc012 | 1620 | __be32 *p = *pp; |
81c3f413 BF |
1621 | |
1622 | status = nfsd4_encode_components(':', location->hosts, &p, buflen); | |
1623 | if (status) | |
1624 | return status; | |
1625 | status = nfsd4_encode_components('/', location->path, &p, buflen); | |
1626 | if (status) | |
1627 | return status; | |
1628 | *pp = p; | |
1629 | return 0; | |
1630 | } | |
1631 | ||
1632 | /* | |
1633 | * Return the path to an export point in the pseudo filesystem namespace | |
1634 | * Returned string is safe to use as long as the caller holds a reference | |
1635 | * to @exp. | |
1636 | */ | |
b37ad28b | 1637 | static char *nfsd4_path(struct svc_rqst *rqstp, struct svc_export *exp, __be32 *stat) |
81c3f413 BF |
1638 | { |
1639 | struct svc_fh tmp_fh; | |
2671a4bf TM |
1640 | char *path = NULL, *rootpath; |
1641 | size_t rootlen; | |
81c3f413 BF |
1642 | |
1643 | fh_init(&tmp_fh, NFS4_FHSIZE); | |
df547efb | 1644 | *stat = exp_pseudoroot(rqstp, &tmp_fh); |
cc45f017 AV |
1645 | if (*stat) |
1646 | return NULL; | |
54775491 | 1647 | rootpath = tmp_fh.fh_export->ex_pathname; |
81c3f413 | 1648 | |
54775491 | 1649 | path = exp->ex_pathname; |
81c3f413 | 1650 | |
2671a4bf TM |
1651 | rootlen = strlen(rootpath); |
1652 | if (strncmp(path, rootpath, rootlen)) { | |
817cb9d4 | 1653 | dprintk("nfsd: fs_locations failed;" |
81c3f413 | 1654 | "%s is not contained in %s\n", path, rootpath); |
cc45f017 | 1655 | *stat = nfserr_notsupp; |
2671a4bf TM |
1656 | path = NULL; |
1657 | goto out; | |
81c3f413 | 1658 | } |
2671a4bf TM |
1659 | path += rootlen; |
1660 | out: | |
1661 | fh_put(&tmp_fh); | |
1662 | return path; | |
81c3f413 BF |
1663 | } |
1664 | ||
1665 | /* | |
1666 | * encode a fs_locations structure | |
1667 | */ | |
b37ad28b | 1668 | static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp, |
81c3f413 | 1669 | struct svc_export *exp, |
2ebbc012 | 1670 | __be32 **pp, int *buflen) |
81c3f413 | 1671 | { |
b37ad28b | 1672 | __be32 status; |
cc45f017 | 1673 | int i; |
2ebbc012 | 1674 | __be32 *p = *pp; |
81c3f413 | 1675 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
cc45f017 | 1676 | char *root = nfsd4_path(rqstp, exp, &status); |
81c3f413 | 1677 | |
cc45f017 AV |
1678 | if (status) |
1679 | return status; | |
81c3f413 BF |
1680 | status = nfsd4_encode_components('/', root, &p, buflen); |
1681 | if (status) | |
1682 | return status; | |
1683 | if ((*buflen -= 4) < 0) | |
1684 | return nfserr_resource; | |
1685 | WRITE32(fslocs->locations_count); | |
1686 | for (i=0; i<fslocs->locations_count; i++) { | |
1687 | status = nfsd4_encode_fs_location4(&fslocs->locations[i], | |
1688 | &p, buflen); | |
1689 | if (status) | |
1690 | return status; | |
1691 | } | |
1692 | *pp = p; | |
1693 | return 0; | |
1694 | } | |
1da177e4 LT |
1695 | |
1696 | static u32 nfs4_ftypes[16] = { | |
1697 | NF4BAD, NF4FIFO, NF4CHR, NF4BAD, | |
1698 | NF4DIR, NF4BAD, NF4BLK, NF4BAD, | |
1699 | NF4REG, NF4BAD, NF4LNK, NF4BAD, | |
1700 | NF4SOCK, NF4BAD, NF4LNK, NF4BAD, | |
1701 | }; | |
1702 | ||
b37ad28b | 1703 | static __be32 |
1da177e4 | 1704 | nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
2ebbc012 | 1705 | __be32 **p, int *buflen) |
1da177e4 LT |
1706 | { |
1707 | int status; | |
1708 | ||
1709 | if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) | |
1710 | return nfserr_resource; | |
1711 | if (whotype != NFS4_ACL_WHO_NAMED) | |
1712 | status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); | |
1713 | else if (group) | |
1714 | status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1715 | else | |
1716 | status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1)); | |
1717 | if (status < 0) | |
1718 | return nfserrno(status); | |
1719 | *p = xdr_encode_opaque(*p, NULL, status); | |
1720 | *buflen -= (XDR_QUADLEN(status) << 2) + 4; | |
1721 | BUG_ON(*buflen < 0); | |
1722 | return 0; | |
1723 | } | |
1724 | ||
b37ad28b | 1725 | static inline __be32 |
2ebbc012 | 1726 | nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, __be32 **p, int *buflen) |
1da177e4 LT |
1727 | { |
1728 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen); | |
1729 | } | |
1730 | ||
b37ad28b | 1731 | static inline __be32 |
2ebbc012 | 1732 | nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, __be32 **p, int *buflen) |
1da177e4 LT |
1733 | { |
1734 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen); | |
1735 | } | |
1736 | ||
b37ad28b | 1737 | static inline __be32 |
1da177e4 | 1738 | nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
2ebbc012 | 1739 | __be32 **p, int *buflen) |
1da177e4 LT |
1740 | { |
1741 | return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen); | |
1742 | } | |
1743 | ||
42ca0993 BF |
1744 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
1745 | FATTR4_WORD0_RDATTR_ERROR) | |
1746 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
1747 | ||
b37ad28b | 1748 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
42ca0993 BF |
1749 | { |
1750 | /* As per referral draft: */ | |
1751 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
1752 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
1753 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
1754 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
1755 | *rdattr_err = NFSERR_MOVED; | |
1756 | else | |
1757 | return nfserr_moved; | |
1758 | } | |
1759 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
1760 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
1761 | return 0; | |
1762 | } | |
1da177e4 LT |
1763 | |
1764 | /* | |
1765 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
1766 | * ourselves. | |
1767 | * | |
1768 | * @countp is the buffer size in _words_; upon successful return this becomes | |
1769 | * replaced with the number of words written. | |
1770 | */ | |
b37ad28b | 1771 | __be32 |
1da177e4 | 1772 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, |
2ebbc012 | 1773 | struct dentry *dentry, __be32 *buffer, int *countp, u32 *bmval, |
406a7ea9 | 1774 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
1775 | { |
1776 | u32 bmval0 = bmval[0]; | |
1777 | u32 bmval1 = bmval[1]; | |
7e705706 | 1778 | u32 bmval2 = bmval[2]; |
1da177e4 LT |
1779 | struct kstat stat; |
1780 | struct svc_fh tempfh; | |
1781 | struct kstatfs statfs; | |
1782 | int buflen = *countp << 2; | |
2ebbc012 | 1783 | __be32 *attrlenp; |
1da177e4 LT |
1784 | u32 dummy; |
1785 | u64 dummy64; | |
42ca0993 | 1786 | u32 rdattr_err = 0; |
2ebbc012 | 1787 | __be32 *p = buffer; |
b37ad28b | 1788 | __be32 status; |
b8dd7b9a | 1789 | int err; |
1da177e4 LT |
1790 | int aclsupport = 0; |
1791 | struct nfs4_acl *acl = NULL; | |
7e705706 AA |
1792 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
1793 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
1794 | struct path path = { |
1795 | .mnt = exp->ex_path.mnt, | |
1796 | .dentry = dentry, | |
1797 | }; | |
1da177e4 LT |
1798 | |
1799 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
7e705706 AA |
1800 | BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); |
1801 | BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); | |
1802 | BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); | |
1da177e4 | 1803 | |
42ca0993 | 1804 | if (exp->ex_fslocs.migrated) { |
7e705706 | 1805 | BUG_ON(bmval[2]); |
42ca0993 BF |
1806 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); |
1807 | if (status) | |
1808 | goto out; | |
1809 | } | |
1810 | ||
54775491 | 1811 | err = vfs_getattr(exp->ex_path.mnt, dentry, &stat); |
b8dd7b9a | 1812 | if (err) |
1da177e4 | 1813 | goto out_nfserr; |
a16e92ed BF |
1814 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | |
1815 | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
1816 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
1817 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 1818 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 1819 | if (err) |
1da177e4 LT |
1820 | goto out_nfserr; |
1821 | } | |
1822 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
1823 | fh_init(&tempfh, NFS4_FHSIZE); | |
1824 | status = fh_compose(&tempfh, exp, dentry, NULL); | |
1825 | if (status) | |
1826 | goto out; | |
1827 | fhp = &tempfh; | |
1828 | } | |
1829 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
1830 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
b8dd7b9a AV |
1831 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
1832 | aclsupport = (err == 0); | |
1da177e4 | 1833 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 1834 | if (err == -EOPNOTSUPP) |
1da177e4 | 1835 | bmval0 &= ~FATTR4_WORD0_ACL; |
b8dd7b9a | 1836 | else if (err == -EINVAL) { |
1da177e4 LT |
1837 | status = nfserr_attrnotsupp; |
1838 | goto out; | |
b8dd7b9a | 1839 | } else if (err != 0) |
1da177e4 LT |
1840 | goto out_nfserr; |
1841 | } | |
1842 | } | |
1da177e4 | 1843 | |
2b44f1ba BH |
1844 | if (bmval2) { |
1845 | if ((buflen -= 16) < 0) | |
1846 | goto out_resource; | |
7e705706 AA |
1847 | WRITE32(3); |
1848 | WRITE32(bmval0); | |
1849 | WRITE32(bmval1); | |
1850 | WRITE32(bmval2); | |
2b44f1ba BH |
1851 | } else if (bmval1) { |
1852 | if ((buflen -= 12) < 0) | |
1853 | goto out_resource; | |
7e705706 AA |
1854 | WRITE32(2); |
1855 | WRITE32(bmval0); | |
1856 | WRITE32(bmval1); | |
1857 | } else { | |
2b44f1ba BH |
1858 | if ((buflen -= 8) < 0) |
1859 | goto out_resource; | |
7e705706 AA |
1860 | WRITE32(1); |
1861 | WRITE32(bmval0); | |
1862 | } | |
1da177e4 LT |
1863 | attrlenp = p++; /* to be backfilled later */ |
1864 | ||
1865 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
7e705706 AA |
1866 | u32 word0 = nfsd_suppattrs0(minorversion); |
1867 | u32 word1 = nfsd_suppattrs1(minorversion); | |
1868 | u32 word2 = nfsd_suppattrs2(minorversion); | |
1869 | ||
42ca0993 BF |
1870 | if (!aclsupport) |
1871 | word0 &= ~FATTR4_WORD0_ACL; | |
7e705706 | 1872 | if (!word2) { |
2b44f1ba BH |
1873 | if ((buflen -= 12) < 0) |
1874 | goto out_resource; | |
7e705706 AA |
1875 | WRITE32(2); |
1876 | WRITE32(word0); | |
1877 | WRITE32(word1); | |
1878 | } else { | |
2b44f1ba BH |
1879 | if ((buflen -= 16) < 0) |
1880 | goto out_resource; | |
7e705706 AA |
1881 | WRITE32(3); |
1882 | WRITE32(word0); | |
1883 | WRITE32(word1); | |
1884 | WRITE32(word2); | |
1885 | } | |
1da177e4 LT |
1886 | } |
1887 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
1888 | if ((buflen -= 4) < 0) | |
1889 | goto out_resource; | |
1890 | dummy = nfs4_ftypes[(stat.mode & S_IFMT) >> 12]; | |
1891 | if (dummy == NF4BAD) | |
1892 | goto out_serverfault; | |
1893 | WRITE32(dummy); | |
1894 | } | |
1895 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
1896 | if ((buflen -= 4) < 0) | |
1897 | goto out_resource; | |
49640001 | 1898 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
e34ac862 | 1899 | WRITE32(NFS4_FH_PERSISTENT); |
49640001 | 1900 | else |
e34ac862 | 1901 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
1da177e4 LT |
1902 | } |
1903 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
1da177e4 LT |
1904 | if ((buflen -= 8) < 0) |
1905 | goto out_resource; | |
c654b8a9 | 1906 | write_change(&p, &stat, dentry->d_inode); |
1da177e4 LT |
1907 | } |
1908 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
1909 | if ((buflen -= 8) < 0) | |
1910 | goto out_resource; | |
1911 | WRITE64(stat.size); | |
1912 | } | |
1913 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
1914 | if ((buflen -= 4) < 0) | |
1915 | goto out_resource; | |
1916 | WRITE32(1); | |
1917 | } | |
1918 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
1919 | if ((buflen -= 4) < 0) | |
1920 | goto out_resource; | |
1921 | WRITE32(1); | |
1922 | } | |
1923 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
1924 | if ((buflen -= 4) < 0) | |
1925 | goto out_resource; | |
1926 | WRITE32(0); | |
1927 | } | |
1928 | if (bmval0 & FATTR4_WORD0_FSID) { | |
1929 | if ((buflen -= 16) < 0) | |
1930 | goto out_resource; | |
42ca0993 BF |
1931 | if (exp->ex_fslocs.migrated) { |
1932 | WRITE64(NFS4_REFERRAL_FSID_MAJOR); | |
1933 | WRITE64(NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
1934 | } else switch(fsid_source(fhp)) { |
1935 | case FSIDSOURCE_FSID: | |
1da177e4 LT |
1936 | WRITE64((u64)exp->ex_fsid); |
1937 | WRITE64((u64)0); | |
af6a4e28 N |
1938 | break; |
1939 | case FSIDSOURCE_DEV: | |
1da177e4 LT |
1940 | WRITE32(0); |
1941 | WRITE32(MAJOR(stat.dev)); | |
1942 | WRITE32(0); | |
1943 | WRITE32(MINOR(stat.dev)); | |
af6a4e28 N |
1944 | break; |
1945 | case FSIDSOURCE_UUID: | |
1946 | WRITEMEM(exp->ex_uuid, 16); | |
1947 | break; | |
1da177e4 LT |
1948 | } |
1949 | } | |
1950 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
1951 | if ((buflen -= 4) < 0) | |
1952 | goto out_resource; | |
1953 | WRITE32(0); | |
1954 | } | |
1955 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
1956 | if ((buflen -= 4) < 0) | |
1957 | goto out_resource; | |
cf07d2ea | 1958 | WRITE32(nfsd4_lease); |
1da177e4 LT |
1959 | } |
1960 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
1961 | if ((buflen -= 4) < 0) | |
1962 | goto out_resource; | |
42ca0993 | 1963 | WRITE32(rdattr_err); |
1da177e4 LT |
1964 | } |
1965 | if (bmval0 & FATTR4_WORD0_ACL) { | |
1966 | struct nfs4_ace *ace; | |
1da177e4 LT |
1967 | |
1968 | if (acl == NULL) { | |
1969 | if ((buflen -= 4) < 0) | |
1970 | goto out_resource; | |
1971 | ||
1972 | WRITE32(0); | |
1973 | goto out_acl; | |
1974 | } | |
1975 | if ((buflen -= 4) < 0) | |
1976 | goto out_resource; | |
1977 | WRITE32(acl->naces); | |
1978 | ||
28e05dd8 | 1979 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
1da177e4 LT |
1980 | if ((buflen -= 4*3) < 0) |
1981 | goto out_resource; | |
1982 | WRITE32(ace->type); | |
1983 | WRITE32(ace->flag); | |
1984 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); | |
1985 | status = nfsd4_encode_aclname(rqstp, ace->whotype, | |
1986 | ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP, | |
1987 | &p, &buflen); | |
1988 | if (status == nfserr_resource) | |
1989 | goto out_resource; | |
1990 | if (status) | |
1991 | goto out; | |
1992 | } | |
1993 | } | |
1994 | out_acl: | |
1995 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
1996 | if ((buflen -= 4) < 0) | |
1997 | goto out_resource; | |
1998 | WRITE32(aclsupport ? | |
1999 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); | |
2000 | } | |
2001 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
2002 | if ((buflen -= 4) < 0) | |
2003 | goto out_resource; | |
2004 | WRITE32(1); | |
2005 | } | |
2006 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
2007 | if ((buflen -= 4) < 0) | |
2008 | goto out_resource; | |
2009 | WRITE32(1); | |
2010 | } | |
2011 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
2012 | if ((buflen -= 4) < 0) | |
2013 | goto out_resource; | |
2014 | WRITE32(1); | |
2015 | } | |
2016 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
2017 | if ((buflen -= 4) < 0) | |
2018 | goto out_resource; | |
2019 | WRITE32(1); | |
2020 | } | |
2021 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
2022 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; | |
2023 | if (buflen < 0) | |
2024 | goto out_resource; | |
2025 | WRITE32(fhp->fh_handle.fh_size); | |
2026 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); | |
2027 | } | |
2028 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
2029 | if ((buflen -= 8) < 0) | |
2030 | goto out_resource; | |
40ee5dc6 | 2031 | WRITE64(stat.ino); |
1da177e4 LT |
2032 | } |
2033 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
2034 | if ((buflen -= 8) < 0) | |
2035 | goto out_resource; | |
2036 | WRITE64((u64) statfs.f_ffree); | |
2037 | } | |
2038 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
2039 | if ((buflen -= 8) < 0) | |
2040 | goto out_resource; | |
2041 | WRITE64((u64) statfs.f_ffree); | |
2042 | } | |
2043 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
2044 | if ((buflen -= 8) < 0) | |
2045 | goto out_resource; | |
2046 | WRITE64((u64) statfs.f_files); | |
2047 | } | |
81c3f413 BF |
2048 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
2049 | status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); | |
2050 | if (status == nfserr_resource) | |
2051 | goto out_resource; | |
2052 | if (status) | |
2053 | goto out; | |
2054 | } | |
1da177e4 LT |
2055 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
2056 | if ((buflen -= 4) < 0) | |
2057 | goto out_resource; | |
2058 | WRITE32(1); | |
2059 | } | |
2060 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
2061 | if ((buflen -= 8) < 0) | |
2062 | goto out_resource; | |
2063 | WRITE64(~(u64)0); | |
2064 | } | |
2065 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
2066 | if ((buflen -= 4) < 0) | |
2067 | goto out_resource; | |
2068 | WRITE32(255); | |
2069 | } | |
2070 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
2071 | if ((buflen -= 4) < 0) | |
2072 | goto out_resource; | |
a16e92ed | 2073 | WRITE32(statfs.f_namelen); |
1da177e4 LT |
2074 | } |
2075 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
2076 | if ((buflen -= 8) < 0) | |
2077 | goto out_resource; | |
7adae489 | 2078 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2079 | } |
2080 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
2081 | if ((buflen -= 8) < 0) | |
2082 | goto out_resource; | |
7adae489 | 2083 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2084 | } |
2085 | if (bmval1 & FATTR4_WORD1_MODE) { | |
2086 | if ((buflen -= 4) < 0) | |
2087 | goto out_resource; | |
2088 | WRITE32(stat.mode & S_IALLUGO); | |
2089 | } | |
2090 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
2091 | if ((buflen -= 4) < 0) | |
2092 | goto out_resource; | |
2093 | WRITE32(1); | |
2094 | } | |
2095 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
2096 | if ((buflen -= 4) < 0) | |
2097 | goto out_resource; | |
2098 | WRITE32(stat.nlink); | |
2099 | } | |
2100 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
2101 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); | |
2102 | if (status == nfserr_resource) | |
2103 | goto out_resource; | |
2104 | if (status) | |
2105 | goto out; | |
2106 | } | |
2107 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
2108 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); | |
2109 | if (status == nfserr_resource) | |
2110 | goto out_resource; | |
2111 | if (status) | |
2112 | goto out; | |
2113 | } | |
2114 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
2115 | if ((buflen -= 8) < 0) | |
2116 | goto out_resource; | |
2117 | WRITE32((u32) MAJOR(stat.rdev)); | |
2118 | WRITE32((u32) MINOR(stat.rdev)); | |
2119 | } | |
2120 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
2121 | if ((buflen -= 8) < 0) | |
2122 | goto out_resource; | |
2123 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
2124 | WRITE64(dummy64); | |
2125 | } | |
2126 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
2127 | if ((buflen -= 8) < 0) | |
2128 | goto out_resource; | |
2129 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
2130 | WRITE64(dummy64); | |
2131 | } | |
2132 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
2133 | if ((buflen -= 8) < 0) | |
2134 | goto out_resource; | |
2135 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
2136 | WRITE64(dummy64); | |
2137 | } | |
2138 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
2139 | if ((buflen -= 8) < 0) | |
2140 | goto out_resource; | |
2141 | dummy64 = (u64)stat.blocks << 9; | |
2142 | WRITE64(dummy64); | |
2143 | } | |
2144 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
2145 | if ((buflen -= 12) < 0) | |
2146 | goto out_resource; | |
2147 | WRITE32(0); | |
2148 | WRITE32(stat.atime.tv_sec); | |
2149 | WRITE32(stat.atime.tv_nsec); | |
2150 | } | |
2151 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
2152 | if ((buflen -= 12) < 0) | |
2153 | goto out_resource; | |
2154 | WRITE32(0); | |
2155 | WRITE32(1); | |
2156 | WRITE32(0); | |
2157 | } | |
2158 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
2159 | if ((buflen -= 12) < 0) | |
2160 | goto out_resource; | |
2161 | WRITE32(0); | |
2162 | WRITE32(stat.ctime.tv_sec); | |
2163 | WRITE32(stat.ctime.tv_nsec); | |
2164 | } | |
2165 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
2166 | if ((buflen -= 12) < 0) | |
2167 | goto out_resource; | |
2168 | WRITE32(0); | |
2169 | WRITE32(stat.mtime.tv_sec); | |
2170 | WRITE32(stat.mtime.tv_nsec); | |
2171 | } | |
2172 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
1da177e4 LT |
2173 | if ((buflen -= 8) < 0) |
2174 | goto out_resource; | |
406a7ea9 FF |
2175 | /* |
2176 | * Get parent's attributes if not ignoring crossmount | |
2177 | * and this is the root of a cross-mounted filesystem. | |
2178 | */ | |
2179 | if (ignore_crossmnt == 0 && | |
462d6057 AV |
2180 | dentry == exp->ex_path.mnt->mnt_root) { |
2181 | struct path path = exp->ex_path; | |
2182 | path_get(&path); | |
2183 | while (follow_up(&path)) { | |
2184 | if (path.dentry != path.mnt->mnt_root) | |
2185 | break; | |
2186 | } | |
2187 | err = vfs_getattr(path.mnt, path.dentry, &stat); | |
2188 | path_put(&path); | |
40ee5dc6 PS |
2189 | if (err) |
2190 | goto out_nfserr; | |
2191 | } | |
2192 | WRITE64(stat.ino); | |
1da177e4 | 2193 | } |
8c18f205 BH |
2194 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
2195 | WRITE32(3); | |
2196 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0); | |
2197 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1); | |
2198 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2); | |
2199 | } | |
7e705706 | 2200 | |
1da177e4 LT |
2201 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); |
2202 | *countp = p - buffer; | |
2203 | status = nfs_ok; | |
2204 | ||
2205 | out: | |
28e05dd8 | 2206 | kfree(acl); |
1da177e4 LT |
2207 | if (fhp == &tempfh) |
2208 | fh_put(&tempfh); | |
2209 | return status; | |
2210 | out_nfserr: | |
b8dd7b9a | 2211 | status = nfserrno(err); |
1da177e4 LT |
2212 | goto out; |
2213 | out_resource: | |
2214 | *countp = 0; | |
2215 | status = nfserr_resource; | |
2216 | goto out; | |
2217 | out_serverfault: | |
2218 | status = nfserr_serverfault; | |
2219 | goto out; | |
2220 | } | |
2221 | ||
c0ce6ec8 BF |
2222 | static inline int attributes_need_mount(u32 *bmval) |
2223 | { | |
2224 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2225 | return 1; | |
2226 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2227 | return 1; | |
2228 | return 0; | |
2229 | } | |
2230 | ||
b37ad28b | 2231 | static __be32 |
1da177e4 | 2232 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, |
2ebbc012 | 2233 | const char *name, int namlen, __be32 *p, int *buflen) |
1da177e4 LT |
2234 | { |
2235 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2236 | struct dentry *dentry; | |
b37ad28b | 2237 | __be32 nfserr; |
406a7ea9 | 2238 | int ignore_crossmnt = 0; |
1da177e4 LT |
2239 | |
2240 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
2241 | if (IS_ERR(dentry)) | |
2242 | return nfserrno(PTR_ERR(dentry)); | |
b2c0cea6 BF |
2243 | if (!dentry->d_inode) { |
2244 | /* | |
2245 | * nfsd_buffered_readdir drops the i_mutex between | |
2246 | * readdir and calling this callback, leaving a window | |
2247 | * where this directory entry could have gone away. | |
2248 | */ | |
2249 | dput(dentry); | |
2250 | return nfserr_noent; | |
2251 | } | |
1da177e4 LT |
2252 | |
2253 | exp_get(exp); | |
406a7ea9 FF |
2254 | /* |
2255 | * In the case of a mountpoint, the client may be asking for | |
2256 | * attributes that are only properties of the underlying filesystem | |
2257 | * as opposed to the cross-mounted file system. In such a case, | |
2258 | * we will not follow the cross mount and will fill the attribtutes | |
2259 | * directly from the mountpoint dentry. | |
2260 | */ | |
3227fa41 | 2261 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
2262 | int err; |
2263 | ||
3227fa41 BF |
2264 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
2265 | && !attributes_need_mount(cd->rd_bmval)) { | |
2266 | ignore_crossmnt = 1; | |
2267 | goto out_encode; | |
2268 | } | |
dcb488a3 AA |
2269 | /* |
2270 | * Why the heck aren't we just using nfsd_lookup?? | |
2271 | * Different "."/".." handling? Something else? | |
2272 | * At least, add a comment here to explain.... | |
2273 | */ | |
021d3a72 BF |
2274 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
2275 | if (err) { | |
2276 | nfserr = nfserrno(err); | |
1da177e4 LT |
2277 | goto out_put; |
2278 | } | |
dcb488a3 AA |
2279 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
2280 | if (nfserr) | |
2281 | goto out_put; | |
1da177e4 LT |
2282 | |
2283 | } | |
3227fa41 | 2284 | out_encode: |
1da177e4 | 2285 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, |
406a7ea9 | 2286 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
2287 | out_put: |
2288 | dput(dentry); | |
2289 | exp_put(exp); | |
2290 | return nfserr; | |
2291 | } | |
2292 | ||
2ebbc012 | 2293 | static __be32 * |
b37ad28b | 2294 | nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr) |
1da177e4 | 2295 | { |
2ebbc012 | 2296 | __be32 *attrlenp; |
1da177e4 LT |
2297 | |
2298 | if (buflen < 6) | |
2299 | return NULL; | |
2300 | *p++ = htonl(2); | |
2301 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
2302 | *p++ = htonl(0); /* bmval1 */ | |
2303 | ||
2304 | attrlenp = p++; | |
2305 | *p++ = nfserr; /* no htonl */ | |
2306 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
2307 | return p; | |
2308 | } | |
2309 | ||
2310 | static int | |
a0ad13ef N |
2311 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
2312 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 2313 | { |
a0ad13ef | 2314 | struct readdir_cd *ccd = ccdv; |
1da177e4 LT |
2315 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
2316 | int buflen; | |
2ebbc012 | 2317 | __be32 *p = cd->buffer; |
b2c0cea6 | 2318 | __be32 *cookiep; |
b37ad28b | 2319 | __be32 nfserr = nfserr_toosmall; |
1da177e4 LT |
2320 | |
2321 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
2322 | if (name && isdotent(name, namlen)) { | |
2323 | cd->common.err = nfs_ok; | |
2324 | return 0; | |
2325 | } | |
2326 | ||
2327 | if (cd->offset) | |
2328 | xdr_encode_hyper(cd->offset, (u64) offset); | |
2329 | ||
2330 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); | |
2331 | if (buflen < 0) | |
2332 | goto fail; | |
2333 | ||
2334 | *p++ = xdr_one; /* mark entry present */ | |
b2c0cea6 | 2335 | cookiep = p; |
1da177e4 LT |
2336 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
2337 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
2338 | ||
2339 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen); | |
2340 | switch (nfserr) { | |
2341 | case nfs_ok: | |
2342 | p += buflen; | |
2343 | break; | |
2344 | case nfserr_resource: | |
2345 | nfserr = nfserr_toosmall; | |
2346 | goto fail; | |
b2c0cea6 BF |
2347 | case nfserr_noent: |
2348 | goto skip_entry; | |
1da177e4 LT |
2349 | default: |
2350 | /* | |
2351 | * If the client requested the RDATTR_ERROR attribute, | |
2352 | * we stuff the error code into this attribute | |
2353 | * and continue. If this attribute was not requested, | |
2354 | * then in accordance with the spec, we fail the | |
2355 | * entire READDIR operation(!) | |
2356 | */ | |
2357 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
2358 | goto fail; | |
1da177e4 | 2359 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
34081efc FI |
2360 | if (p == NULL) { |
2361 | nfserr = nfserr_toosmall; | |
1da177e4 | 2362 | goto fail; |
34081efc | 2363 | } |
1da177e4 LT |
2364 | } |
2365 | cd->buflen -= (p - cd->buffer); | |
2366 | cd->buffer = p; | |
b2c0cea6 BF |
2367 | cd->offset = cookiep; |
2368 | skip_entry: | |
1da177e4 LT |
2369 | cd->common.err = nfs_ok; |
2370 | return 0; | |
2371 | fail: | |
2372 | cd->common.err = nfserr; | |
2373 | return -EINVAL; | |
2374 | } | |
2375 | ||
e2f282b9 BH |
2376 | static void |
2377 | nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid) | |
2378 | { | |
bc749ca4 | 2379 | __be32 *p; |
e2f282b9 BH |
2380 | |
2381 | RESERVE_SPACE(sizeof(stateid_t)); | |
2382 | WRITE32(sid->si_generation); | |
2383 | WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
2384 | ADJUST_ARGS(); | |
2385 | } | |
2386 | ||
695e12f8 | 2387 | static __be32 |
b37ad28b | 2388 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 2389 | { |
bc749ca4 | 2390 | __be32 *p; |
1da177e4 LT |
2391 | |
2392 | if (!nfserr) { | |
2393 | RESERVE_SPACE(8); | |
2394 | WRITE32(access->ac_supported); | |
2395 | WRITE32(access->ac_resp_access); | |
2396 | ADJUST_ARGS(); | |
2397 | } | |
695e12f8 | 2398 | return nfserr; |
1da177e4 LT |
2399 | } |
2400 | ||
1d1bc8f2 BF |
2401 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
2402 | { | |
2403 | __be32 *p; | |
2404 | ||
2405 | if (!nfserr) { | |
2406 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 8); | |
2407 | WRITEMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
2408 | WRITE32(bcts->dir); | |
2409 | /* XXX: ? */ | |
2410 | WRITE32(0); | |
2411 | ADJUST_ARGS(); | |
2412 | } | |
2413 | return nfserr; | |
2414 | } | |
2415 | ||
695e12f8 | 2416 | static __be32 |
b37ad28b | 2417 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 LT |
2418 | { |
2419 | ENCODE_SEQID_OP_HEAD; | |
2420 | ||
e2f282b9 BH |
2421 | if (!nfserr) |
2422 | nfsd4_encode_stateid(resp, &close->cl_stateid); | |
2423 | ||
1da177e4 | 2424 | ENCODE_SEQID_OP_TAIL(close->cl_stateowner); |
695e12f8 | 2425 | return nfserr; |
1da177e4 LT |
2426 | } |
2427 | ||
2428 | ||
695e12f8 | 2429 | static __be32 |
b37ad28b | 2430 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 2431 | { |
bc749ca4 | 2432 | __be32 *p; |
1da177e4 LT |
2433 | |
2434 | if (!nfserr) { | |
2435 | RESERVE_SPACE(8); | |
2436 | WRITEMEM(commit->co_verf.data, 8); | |
2437 | ADJUST_ARGS(); | |
2438 | } | |
695e12f8 | 2439 | return nfserr; |
1da177e4 LT |
2440 | } |
2441 | ||
695e12f8 | 2442 | static __be32 |
b37ad28b | 2443 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 2444 | { |
bc749ca4 | 2445 | __be32 *p; |
1da177e4 LT |
2446 | |
2447 | if (!nfserr) { | |
2448 | RESERVE_SPACE(32); | |
c654b8a9 | 2449 | write_cinfo(&p, &create->cr_cinfo); |
1da177e4 LT |
2450 | WRITE32(2); |
2451 | WRITE32(create->cr_bmval[0]); | |
2452 | WRITE32(create->cr_bmval[1]); | |
2453 | ADJUST_ARGS(); | |
2454 | } | |
695e12f8 | 2455 | return nfserr; |
1da177e4 LT |
2456 | } |
2457 | ||
b37ad28b AV |
2458 | static __be32 |
2459 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
2460 | { |
2461 | struct svc_fh *fhp = getattr->ga_fhp; | |
2462 | int buflen; | |
2463 | ||
2464 | if (nfserr) | |
2465 | return nfserr; | |
2466 | ||
2467 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); | |
2468 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, | |
2469 | resp->p, &buflen, getattr->ga_bmval, | |
406a7ea9 | 2470 | resp->rqstp, 0); |
1da177e4 LT |
2471 | if (!nfserr) |
2472 | resp->p += buflen; | |
2473 | return nfserr; | |
2474 | } | |
2475 | ||
695e12f8 BH |
2476 | static __be32 |
2477 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 2478 | { |
695e12f8 | 2479 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 2480 | unsigned int len; |
bc749ca4 | 2481 | __be32 *p; |
1da177e4 LT |
2482 | |
2483 | if (!nfserr) { | |
2484 | len = fhp->fh_handle.fh_size; | |
2485 | RESERVE_SPACE(len + 4); | |
2486 | WRITE32(len); | |
2487 | WRITEMEM(&fhp->fh_handle.fh_base, len); | |
2488 | ADJUST_ARGS(); | |
2489 | } | |
695e12f8 | 2490 | return nfserr; |
1da177e4 LT |
2491 | } |
2492 | ||
2493 | /* | |
2494 | * Including all fields other than the name, a LOCK4denied structure requires | |
2495 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
2496 | */ | |
2497 | static void | |
2498 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) | |
2499 | { | |
bc749ca4 | 2500 | __be32 *p; |
1da177e4 LT |
2501 | |
2502 | RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0)); | |
2503 | WRITE64(ld->ld_start); | |
2504 | WRITE64(ld->ld_length); | |
2505 | WRITE32(ld->ld_type); | |
2506 | if (ld->ld_sop) { | |
2507 | WRITEMEM(&ld->ld_clientid, 8); | |
2508 | WRITE32(ld->ld_sop->so_owner.len); | |
2509 | WRITEMEM(ld->ld_sop->so_owner.data, ld->ld_sop->so_owner.len); | |
2510 | kref_put(&ld->ld_sop->so_ref, nfs4_free_stateowner); | |
2511 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ | |
2512 | WRITE64((u64)0); /* clientid */ | |
2513 | WRITE32(0); /* length of owner name */ | |
2514 | } | |
2515 | ADJUST_ARGS(); | |
2516 | } | |
2517 | ||
695e12f8 | 2518 | static __be32 |
b37ad28b | 2519 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 2520 | { |
1da177e4 LT |
2521 | ENCODE_SEQID_OP_HEAD; |
2522 | ||
e2f282b9 BH |
2523 | if (!nfserr) |
2524 | nfsd4_encode_stateid(resp, &lock->lk_resp_stateid); | |
2525 | else if (nfserr == nfserr_denied) | |
1da177e4 LT |
2526 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); |
2527 | ||
3a65588a | 2528 | ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner); |
695e12f8 | 2529 | return nfserr; |
1da177e4 LT |
2530 | } |
2531 | ||
695e12f8 | 2532 | static __be32 |
b37ad28b | 2533 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 LT |
2534 | { |
2535 | if (nfserr == nfserr_denied) | |
2536 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); | |
695e12f8 | 2537 | return nfserr; |
1da177e4 LT |
2538 | } |
2539 | ||
695e12f8 | 2540 | static __be32 |
b37ad28b | 2541 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 LT |
2542 | { |
2543 | ENCODE_SEQID_OP_HEAD; | |
2544 | ||
e2f282b9 BH |
2545 | if (!nfserr) |
2546 | nfsd4_encode_stateid(resp, &locku->lu_stateid); | |
2547 | ||
1da177e4 | 2548 | ENCODE_SEQID_OP_TAIL(locku->lu_stateowner); |
695e12f8 | 2549 | return nfserr; |
1da177e4 LT |
2550 | } |
2551 | ||
2552 | ||
695e12f8 | 2553 | static __be32 |
b37ad28b | 2554 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 2555 | { |
bc749ca4 | 2556 | __be32 *p; |
1da177e4 LT |
2557 | |
2558 | if (!nfserr) { | |
2559 | RESERVE_SPACE(20); | |
c654b8a9 | 2560 | write_cinfo(&p, &link->li_cinfo); |
1da177e4 LT |
2561 | ADJUST_ARGS(); |
2562 | } | |
695e12f8 | 2563 | return nfserr; |
1da177e4 LT |
2564 | } |
2565 | ||
2566 | ||
695e12f8 | 2567 | static __be32 |
b37ad28b | 2568 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 2569 | { |
bc749ca4 | 2570 | __be32 *p; |
1da177e4 LT |
2571 | ENCODE_SEQID_OP_HEAD; |
2572 | ||
2573 | if (nfserr) | |
2574 | goto out; | |
2575 | ||
e2f282b9 BH |
2576 | nfsd4_encode_stateid(resp, &open->op_stateid); |
2577 | RESERVE_SPACE(40); | |
c654b8a9 | 2578 | write_cinfo(&p, &open->op_cinfo); |
1da177e4 LT |
2579 | WRITE32(open->op_rflags); |
2580 | WRITE32(2); | |
2581 | WRITE32(open->op_bmval[0]); | |
2582 | WRITE32(open->op_bmval[1]); | |
2583 | WRITE32(open->op_delegate_type); | |
2584 | ADJUST_ARGS(); | |
2585 | ||
2586 | switch (open->op_delegate_type) { | |
2587 | case NFS4_OPEN_DELEGATE_NONE: | |
2588 | break; | |
2589 | case NFS4_OPEN_DELEGATE_READ: | |
e2f282b9 BH |
2590 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2591 | RESERVE_SPACE(20); | |
7b190fec | 2592 | WRITE32(open->op_recall); |
1da177e4 LT |
2593 | |
2594 | /* | |
2595 | * TODO: ACE's in delegations | |
2596 | */ | |
2597 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2598 | WRITE32(0); | |
2599 | WRITE32(0); | |
2600 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2601 | ADJUST_ARGS(); | |
2602 | break; | |
2603 | case NFS4_OPEN_DELEGATE_WRITE: | |
e2f282b9 BH |
2604 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2605 | RESERVE_SPACE(32); | |
1da177e4 LT |
2606 | WRITE32(0); |
2607 | ||
2608 | /* | |
2609 | * TODO: space_limit's in delegations | |
2610 | */ | |
2611 | WRITE32(NFS4_LIMIT_SIZE); | |
2612 | WRITE32(~(u32)0); | |
2613 | WRITE32(~(u32)0); | |
2614 | ||
2615 | /* | |
2616 | * TODO: ACE's in delegations | |
2617 | */ | |
2618 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2619 | WRITE32(0); | |
2620 | WRITE32(0); | |
2621 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2622 | ADJUST_ARGS(); | |
2623 | break; | |
2624 | default: | |
2625 | BUG(); | |
2626 | } | |
2627 | /* XXX save filehandle here */ | |
2628 | out: | |
2629 | ENCODE_SEQID_OP_TAIL(open->op_stateowner); | |
695e12f8 | 2630 | return nfserr; |
1da177e4 LT |
2631 | } |
2632 | ||
695e12f8 | 2633 | static __be32 |
b37ad28b | 2634 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 LT |
2635 | { |
2636 | ENCODE_SEQID_OP_HEAD; | |
e2f282b9 BH |
2637 | |
2638 | if (!nfserr) | |
2639 | nfsd4_encode_stateid(resp, &oc->oc_resp_stateid); | |
1da177e4 LT |
2640 | |
2641 | ENCODE_SEQID_OP_TAIL(oc->oc_stateowner); | |
695e12f8 | 2642 | return nfserr; |
1da177e4 LT |
2643 | } |
2644 | ||
695e12f8 | 2645 | static __be32 |
b37ad28b | 2646 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 LT |
2647 | { |
2648 | ENCODE_SEQID_OP_HEAD; | |
e2f282b9 BH |
2649 | |
2650 | if (!nfserr) | |
2651 | nfsd4_encode_stateid(resp, &od->od_stateid); | |
1da177e4 LT |
2652 | |
2653 | ENCODE_SEQID_OP_TAIL(od->od_stateowner); | |
695e12f8 | 2654 | return nfserr; |
1da177e4 LT |
2655 | } |
2656 | ||
b37ad28b AV |
2657 | static __be32 |
2658 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
44524359 | 2659 | struct nfsd4_read *read) |
1da177e4 LT |
2660 | { |
2661 | u32 eof; | |
2662 | int v, pn; | |
2663 | unsigned long maxcount; | |
2664 | long len; | |
bc749ca4 | 2665 | __be32 *p; |
1da177e4 LT |
2666 | |
2667 | if (nfserr) | |
2668 | return nfserr; | |
2669 | if (resp->xbuf->page_len) | |
2670 | return nfserr_resource; | |
2671 | ||
2672 | RESERVE_SPACE(8); /* eof flag and byte count */ | |
2673 | ||
7adae489 | 2674 | maxcount = svc_max_payload(resp->rqstp); |
1da177e4 LT |
2675 | if (maxcount > read->rd_length) |
2676 | maxcount = read->rd_length; | |
2677 | ||
2678 | len = maxcount; | |
2679 | v = 0; | |
2680 | while (len > 0) { | |
44524359 | 2681 | pn = resp->rqstp->rq_resused++; |
3cc03b16 | 2682 | resp->rqstp->rq_vec[v].iov_base = |
44524359 | 2683 | page_address(resp->rqstp->rq_respages[pn]); |
3cc03b16 | 2684 | resp->rqstp->rq_vec[v].iov_len = |
44524359 | 2685 | len < PAGE_SIZE ? len : PAGE_SIZE; |
1da177e4 LT |
2686 | v++; |
2687 | len -= PAGE_SIZE; | |
2688 | } | |
2689 | read->rd_vlen = v; | |
2690 | ||
039a87ca | 2691 | nfserr = nfsd_read_file(read->rd_rqstp, read->rd_fhp, read->rd_filp, |
3cc03b16 | 2692 | read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, |
1da177e4 LT |
2693 | &maxcount); |
2694 | ||
2695 | if (nfserr == nfserr_symlink) | |
2696 | nfserr = nfserr_inval; | |
2697 | if (nfserr) | |
2698 | return nfserr; | |
44524359 N |
2699 | eof = (read->rd_offset + maxcount >= |
2700 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 LT |
2701 | |
2702 | WRITE32(eof); | |
2703 | WRITE32(maxcount); | |
2704 | ADJUST_ARGS(); | |
6ed6decc N |
2705 | resp->xbuf->head[0].iov_len = (char*)p |
2706 | - (char*)resp->xbuf->head[0].iov_base; | |
1da177e4 LT |
2707 | resp->xbuf->page_len = maxcount; |
2708 | ||
6ed6decc | 2709 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2710 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2711 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2712 | if (maxcount&3) { |
6ed6decc N |
2713 | RESERVE_SPACE(4); |
2714 | WRITE32(0); | |
1da177e4 LT |
2715 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2716 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2717 | ADJUST_ARGS(); |
1da177e4 LT |
2718 | } |
2719 | return 0; | |
2720 | } | |
2721 | ||
b37ad28b AV |
2722 | static __be32 |
2723 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
2724 | { |
2725 | int maxcount; | |
2726 | char *page; | |
bc749ca4 | 2727 | __be32 *p; |
1da177e4 LT |
2728 | |
2729 | if (nfserr) | |
2730 | return nfserr; | |
2731 | if (resp->xbuf->page_len) | |
2732 | return nfserr_resource; | |
2733 | ||
44524359 | 2734 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
1da177e4 LT |
2735 | |
2736 | maxcount = PAGE_SIZE; | |
2737 | RESERVE_SPACE(4); | |
2738 | ||
2739 | /* | |
2740 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
2741 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
2742 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
2743 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
2744 | */ | |
2745 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); | |
2746 | if (nfserr == nfserr_isdir) | |
2747 | return nfserr_inval; | |
2748 | if (nfserr) | |
2749 | return nfserr; | |
2750 | ||
2751 | WRITE32(maxcount); | |
2752 | ADJUST_ARGS(); | |
6ed6decc N |
2753 | resp->xbuf->head[0].iov_len = (char*)p |
2754 | - (char*)resp->xbuf->head[0].iov_base; | |
2755 | resp->xbuf->page_len = maxcount; | |
1da177e4 | 2756 | |
6ed6decc | 2757 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2758 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2759 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2760 | if (maxcount&3) { |
6ed6decc N |
2761 | RESERVE_SPACE(4); |
2762 | WRITE32(0); | |
1da177e4 LT |
2763 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2764 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2765 | ADJUST_ARGS(); |
1da177e4 LT |
2766 | } |
2767 | return 0; | |
2768 | } | |
2769 | ||
b37ad28b AV |
2770 | static __be32 |
2771 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
2772 | { |
2773 | int maxcount; | |
2774 | loff_t offset; | |
2ebbc012 | 2775 | __be32 *page, *savep, *tailbase; |
bc749ca4 | 2776 | __be32 *p; |
1da177e4 LT |
2777 | |
2778 | if (nfserr) | |
2779 | return nfserr; | |
2780 | if (resp->xbuf->page_len) | |
2781 | return nfserr_resource; | |
2782 | ||
2783 | RESERVE_SPACE(8); /* verifier */ | |
2784 | savep = p; | |
2785 | ||
2786 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
2787 | WRITE32(0); | |
2788 | WRITE32(0); | |
2789 | ADJUST_ARGS(); | |
2790 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; | |
bb6e8a9f | 2791 | tailbase = p; |
1da177e4 LT |
2792 | |
2793 | maxcount = PAGE_SIZE; | |
2794 | if (maxcount > readdir->rd_maxcount) | |
2795 | maxcount = readdir->rd_maxcount; | |
2796 | ||
2797 | /* | |
2798 | * Convert from bytes to words, account for the two words already | |
2799 | * written, make sure to leave two words at the end for the next | |
2800 | * pointer and eof field. | |
2801 | */ | |
2802 | maxcount = (maxcount >> 2) - 4; | |
2803 | if (maxcount < 0) { | |
2804 | nfserr = nfserr_toosmall; | |
2805 | goto err_no_verf; | |
2806 | } | |
2807 | ||
44524359 | 2808 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
1da177e4 LT |
2809 | readdir->common.err = 0; |
2810 | readdir->buflen = maxcount; | |
2811 | readdir->buffer = page; | |
2812 | readdir->offset = NULL; | |
2813 | ||
2814 | offset = readdir->rd_cookie; | |
2815 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
2816 | &offset, | |
2817 | &readdir->common, nfsd4_encode_dirent); | |
2818 | if (nfserr == nfs_ok && | |
2819 | readdir->common.err == nfserr_toosmall && | |
2820 | readdir->buffer == page) | |
2821 | nfserr = nfserr_toosmall; | |
2822 | if (nfserr == nfserr_symlink) | |
2823 | nfserr = nfserr_notdir; | |
2824 | if (nfserr) | |
2825 | goto err_no_verf; | |
2826 | ||
2827 | if (readdir->offset) | |
2828 | xdr_encode_hyper(readdir->offset, offset); | |
2829 | ||
2830 | p = readdir->buffer; | |
2831 | *p++ = 0; /* no more entries */ | |
2832 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
44524359 N |
2833 | resp->xbuf->page_len = ((char*)p) - (char*)page_address( |
2834 | resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); | |
1da177e4 | 2835 | |
bb6e8a9f | 2836 | /* Use rest of head for padding and remaining ops: */ |
bb6e8a9f | 2837 | resp->xbuf->tail[0].iov_base = tailbase; |
1da177e4 LT |
2838 | resp->xbuf->tail[0].iov_len = 0; |
2839 | resp->p = resp->xbuf->tail[0].iov_base; | |
bb6e8a9f | 2840 | resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; |
1da177e4 LT |
2841 | |
2842 | return 0; | |
2843 | err_no_verf: | |
2844 | p = savep; | |
2845 | ADJUST_ARGS(); | |
2846 | return nfserr; | |
2847 | } | |
2848 | ||
695e12f8 | 2849 | static __be32 |
b37ad28b | 2850 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 2851 | { |
bc749ca4 | 2852 | __be32 *p; |
1da177e4 LT |
2853 | |
2854 | if (!nfserr) { | |
2855 | RESERVE_SPACE(20); | |
c654b8a9 | 2856 | write_cinfo(&p, &remove->rm_cinfo); |
1da177e4 LT |
2857 | ADJUST_ARGS(); |
2858 | } | |
695e12f8 | 2859 | return nfserr; |
1da177e4 LT |
2860 | } |
2861 | ||
695e12f8 | 2862 | static __be32 |
b37ad28b | 2863 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 2864 | { |
bc749ca4 | 2865 | __be32 *p; |
1da177e4 LT |
2866 | |
2867 | if (!nfserr) { | |
2868 | RESERVE_SPACE(40); | |
c654b8a9 BF |
2869 | write_cinfo(&p, &rename->rn_sinfo); |
2870 | write_cinfo(&p, &rename->rn_tinfo); | |
1da177e4 LT |
2871 | ADJUST_ARGS(); |
2872 | } | |
695e12f8 | 2873 | return nfserr; |
1da177e4 LT |
2874 | } |
2875 | ||
695e12f8 | 2876 | static __be32 |
22b6dee8 MJ |
2877 | nfsd4_do_encode_secinfo(struct nfsd4_compoundres *resp, |
2878 | __be32 nfserr,struct svc_export *exp) | |
dcb488a3 AA |
2879 | { |
2880 | int i = 0; | |
4796f457 BF |
2881 | u32 nflavs; |
2882 | struct exp_flavor_info *flavs; | |
2883 | struct exp_flavor_info def_flavs[2]; | |
bc749ca4 | 2884 | __be32 *p; |
dcb488a3 AA |
2885 | |
2886 | if (nfserr) | |
2887 | goto out; | |
4796f457 BF |
2888 | if (exp->ex_nflavors) { |
2889 | flavs = exp->ex_flavors; | |
2890 | nflavs = exp->ex_nflavors; | |
2891 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
2892 | flavs = def_flavs; | |
2893 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
2894 | nflavs = 2; | |
2895 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
2896 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
2897 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
2898 | nflavs = 1; | |
2899 | flavs[0].pseudoflavor | |
2900 | = svcauth_gss_flavor(exp->ex_client); | |
2901 | } else { | |
2902 | nflavs = 1; | |
2903 | flavs[0].pseudoflavor | |
2904 | = exp->ex_client->flavour->flavour; | |
2905 | } | |
2906 | } | |
2907 | ||
dcb488a3 | 2908 | RESERVE_SPACE(4); |
4796f457 | 2909 | WRITE32(nflavs); |
dcb488a3 | 2910 | ADJUST_ARGS(); |
4796f457 BF |
2911 | for (i = 0; i < nflavs; i++) { |
2912 | u32 flav = flavs[i].pseudoflavor; | |
dcb488a3 AA |
2913 | struct gss_api_mech *gm = gss_mech_get_by_pseudoflavor(flav); |
2914 | ||
2915 | if (gm) { | |
2916 | RESERVE_SPACE(4); | |
2917 | WRITE32(RPC_AUTH_GSS); | |
2918 | ADJUST_ARGS(); | |
2919 | RESERVE_SPACE(4 + gm->gm_oid.len); | |
2920 | WRITE32(gm->gm_oid.len); | |
2921 | WRITEMEM(gm->gm_oid.data, gm->gm_oid.len); | |
2922 | ADJUST_ARGS(); | |
2923 | RESERVE_SPACE(4); | |
2924 | WRITE32(0); /* qop */ | |
2925 | ADJUST_ARGS(); | |
2926 | RESERVE_SPACE(4); | |
2927 | WRITE32(gss_pseudoflavor_to_service(gm, flav)); | |
2928 | ADJUST_ARGS(); | |
2929 | gss_mech_put(gm); | |
2930 | } else { | |
2931 | RESERVE_SPACE(4); | |
2932 | WRITE32(flav); | |
2933 | ADJUST_ARGS(); | |
2934 | } | |
2935 | } | |
2936 | out: | |
2937 | if (exp) | |
2938 | exp_put(exp); | |
695e12f8 | 2939 | return nfserr; |
dcb488a3 AA |
2940 | } |
2941 | ||
22b6dee8 MJ |
2942 | static __be32 |
2943 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
2944 | struct nfsd4_secinfo *secinfo) | |
2945 | { | |
2946 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->si_exp); | |
2947 | } | |
2948 | ||
2949 | static __be32 | |
2950 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, | |
2951 | struct nfsd4_secinfo_no_name *secinfo) | |
2952 | { | |
2953 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->sin_exp); | |
2954 | } | |
2955 | ||
1da177e4 LT |
2956 | /* |
2957 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
2958 | * regardless of the error status. | |
2959 | */ | |
695e12f8 | 2960 | static __be32 |
b37ad28b | 2961 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 2962 | { |
bc749ca4 | 2963 | __be32 *p; |
1da177e4 LT |
2964 | |
2965 | RESERVE_SPACE(12); | |
2966 | if (nfserr) { | |
2967 | WRITE32(2); | |
2968 | WRITE32(0); | |
2969 | WRITE32(0); | |
2970 | } | |
2971 | else { | |
2972 | WRITE32(2); | |
2973 | WRITE32(setattr->sa_bmval[0]); | |
2974 | WRITE32(setattr->sa_bmval[1]); | |
2975 | } | |
2976 | ADJUST_ARGS(); | |
695e12f8 | 2977 | return nfserr; |
1da177e4 LT |
2978 | } |
2979 | ||
695e12f8 | 2980 | static __be32 |
b37ad28b | 2981 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 2982 | { |
bc749ca4 | 2983 | __be32 *p; |
1da177e4 LT |
2984 | |
2985 | if (!nfserr) { | |
2986 | RESERVE_SPACE(8 + sizeof(nfs4_verifier)); | |
2987 | WRITEMEM(&scd->se_clientid, 8); | |
2988 | WRITEMEM(&scd->se_confirm, sizeof(nfs4_verifier)); | |
2989 | ADJUST_ARGS(); | |
2990 | } | |
2991 | else if (nfserr == nfserr_clid_inuse) { | |
2992 | RESERVE_SPACE(8); | |
2993 | WRITE32(0); | |
2994 | WRITE32(0); | |
2995 | ADJUST_ARGS(); | |
2996 | } | |
695e12f8 | 2997 | return nfserr; |
1da177e4 LT |
2998 | } |
2999 | ||
695e12f8 | 3000 | static __be32 |
b37ad28b | 3001 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 3002 | { |
bc749ca4 | 3003 | __be32 *p; |
1da177e4 LT |
3004 | |
3005 | if (!nfserr) { | |
3006 | RESERVE_SPACE(16); | |
3007 | WRITE32(write->wr_bytes_written); | |
3008 | WRITE32(write->wr_how_written); | |
3009 | WRITEMEM(write->wr_verifier.data, 8); | |
3010 | ADJUST_ARGS(); | |
3011 | } | |
695e12f8 | 3012 | return nfserr; |
1da177e4 LT |
3013 | } |
3014 | ||
2db134eb AA |
3015 | static __be32 |
3016 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, int nfserr, | |
3017 | struct nfsd4_exchange_id *exid) | |
3018 | { | |
bc749ca4 | 3019 | __be32 *p; |
0733d213 AA |
3020 | char *major_id; |
3021 | char *server_scope; | |
3022 | int major_id_sz; | |
3023 | int server_scope_sz; | |
3024 | uint64_t minor_id = 0; | |
3025 | ||
3026 | if (nfserr) | |
3027 | return nfserr; | |
3028 | ||
3029 | major_id = utsname()->nodename; | |
3030 | major_id_sz = strlen(major_id); | |
3031 | server_scope = utsname()->nodename; | |
3032 | server_scope_sz = strlen(server_scope); | |
3033 | ||
3034 | RESERVE_SPACE( | |
3035 | 8 /* eir_clientid */ + | |
3036 | 4 /* eir_sequenceid */ + | |
3037 | 4 /* eir_flags */ + | |
3038 | 4 /* spr_how (SP4_NONE) */ + | |
3039 | 8 /* so_minor_id */ + | |
3040 | 4 /* so_major_id.len */ + | |
3041 | (XDR_QUADLEN(major_id_sz) * 4) + | |
3042 | 4 /* eir_server_scope.len */ + | |
3043 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
3044 | 4 /* eir_server_impl_id.count (0) */); | |
3045 | ||
3046 | WRITEMEM(&exid->clientid, 8); | |
3047 | WRITE32(exid->seqid); | |
3048 | WRITE32(exid->flags); | |
3049 | ||
3050 | /* state_protect4_r. Currently only support SP4_NONE */ | |
3051 | BUG_ON(exid->spa_how != SP4_NONE); | |
3052 | WRITE32(exid->spa_how); | |
3053 | ||
3054 | /* The server_owner struct */ | |
3055 | WRITE64(minor_id); /* Minor id */ | |
3056 | /* major id */ | |
3057 | WRITE32(major_id_sz); | |
3058 | WRITEMEM(major_id, major_id_sz); | |
3059 | ||
3060 | /* Server scope */ | |
3061 | WRITE32(server_scope_sz); | |
3062 | WRITEMEM(server_scope, server_scope_sz); | |
3063 | ||
3064 | /* Implementation id */ | |
3065 | WRITE32(0); /* zero length nfs_impl_id4 array */ | |
3066 | ADJUST_ARGS(); | |
3067 | return 0; | |
2db134eb AA |
3068 | } |
3069 | ||
3070 | static __be32 | |
3071 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, int nfserr, | |
3072 | struct nfsd4_create_session *sess) | |
3073 | { | |
bc749ca4 | 3074 | __be32 *p; |
ec6b5d7b AA |
3075 | |
3076 | if (nfserr) | |
3077 | return nfserr; | |
3078 | ||
3079 | RESERVE_SPACE(24); | |
3080 | WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3081 | WRITE32(sess->seqid); | |
3082 | WRITE32(sess->flags); | |
3083 | ADJUST_ARGS(); | |
3084 | ||
3085 | RESERVE_SPACE(28); | |
3086 | WRITE32(0); /* headerpadsz */ | |
3087 | WRITE32(sess->fore_channel.maxreq_sz); | |
3088 | WRITE32(sess->fore_channel.maxresp_sz); | |
3089 | WRITE32(sess->fore_channel.maxresp_cached); | |
3090 | WRITE32(sess->fore_channel.maxops); | |
3091 | WRITE32(sess->fore_channel.maxreqs); | |
3092 | WRITE32(sess->fore_channel.nr_rdma_attrs); | |
3093 | ADJUST_ARGS(); | |
3094 | ||
3095 | if (sess->fore_channel.nr_rdma_attrs) { | |
3096 | RESERVE_SPACE(4); | |
3097 | WRITE32(sess->fore_channel.rdma_attrs); | |
3098 | ADJUST_ARGS(); | |
3099 | } | |
3100 | ||
3101 | RESERVE_SPACE(28); | |
3102 | WRITE32(0); /* headerpadsz */ | |
3103 | WRITE32(sess->back_channel.maxreq_sz); | |
3104 | WRITE32(sess->back_channel.maxresp_sz); | |
3105 | WRITE32(sess->back_channel.maxresp_cached); | |
3106 | WRITE32(sess->back_channel.maxops); | |
3107 | WRITE32(sess->back_channel.maxreqs); | |
3108 | WRITE32(sess->back_channel.nr_rdma_attrs); | |
3109 | ADJUST_ARGS(); | |
3110 | ||
3111 | if (sess->back_channel.nr_rdma_attrs) { | |
3112 | RESERVE_SPACE(4); | |
3113 | WRITE32(sess->back_channel.rdma_attrs); | |
3114 | ADJUST_ARGS(); | |
3115 | } | |
3116 | return 0; | |
2db134eb AA |
3117 | } |
3118 | ||
3119 | static __be32 | |
3120 | nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, int nfserr, | |
3121 | struct nfsd4_destroy_session *destroy_session) | |
3122 | { | |
2db134eb AA |
3123 | return nfserr; |
3124 | } | |
3125 | ||
bf864a31 | 3126 | __be32 |
2db134eb AA |
3127 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr, |
3128 | struct nfsd4_sequence *seq) | |
3129 | { | |
bc749ca4 | 3130 | __be32 *p; |
b85d4c01 BH |
3131 | |
3132 | if (nfserr) | |
3133 | return nfserr; | |
3134 | ||
3135 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20); | |
3136 | WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3137 | WRITE32(seq->seqid); | |
3138 | WRITE32(seq->slotid); | |
3139 | WRITE32(seq->maxslots); | |
0d7bb719 | 3140 | /* For now: target_maxslots = maxslots */ |
b85d4c01 | 3141 | WRITE32(seq->maxslots); |
0d7bb719 | 3142 | WRITE32(seq->status_flags); |
b85d4c01 BH |
3143 | |
3144 | ADJUST_ARGS(); | |
557ce264 | 3145 | resp->cstate.datap = p; /* DRC cache data pointer */ |
b85d4c01 | 3146 | return 0; |
2db134eb AA |
3147 | } |
3148 | ||
695e12f8 BH |
3149 | static __be32 |
3150 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
3151 | { | |
3152 | return nfserr; | |
3153 | } | |
3154 | ||
3155 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
3156 | ||
2db134eb AA |
3157 | /* |
3158 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
3159 | * since we don't need to filter out obsolete ops as this is | |
3160 | * done in the decoding phase. | |
3161 | */ | |
695e12f8 | 3162 | static nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
3163 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
3164 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
3165 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
3166 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
3167 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
3168 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
3169 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
3170 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
3171 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
3172 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
3173 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
3174 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
3175 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
3176 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
3177 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3178 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 3179 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
3180 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
3181 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
3182 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3183 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3184 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3185 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
3186 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
3187 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
3188 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
3189 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
3190 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
3191 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3192 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3193 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
3194 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
3195 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
3196 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
3197 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3198 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
3199 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3200 | |
3201 | /* NFSv4.1 operations */ | |
3202 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
1d1bc8f2 | 3203 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
2db134eb AA |
3204 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
3205 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
3206 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session, | |
3207 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
3208 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, | |
3209 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, | |
3210 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
3211 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
3212 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
3213 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
22b6dee8 | 3214 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
2db134eb AA |
3215 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
3216 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
3217 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
3218 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, | |
3219 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
3220 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
695e12f8 BH |
3221 | }; |
3222 | ||
496c262c AA |
3223 | /* |
3224 | * Calculate the total amount of memory that the compound response has taken | |
3225 | * after encoding the current operation. | |
3226 | * | |
3227 | * pad: add on 8 bytes for the next operation's op_code and status so that | |
3228 | * there is room to cache a failure on the next operation. | |
3229 | * | |
3230 | * Compare this length to the session se_fmaxresp_cached. | |
3231 | * | |
3232 | * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so | |
3233 | * will be at least a page and will therefore hold the xdr_buf head. | |
3234 | */ | |
3235 | static int nfsd4_check_drc_limit(struct nfsd4_compoundres *resp) | |
3236 | { | |
3237 | int status = 0; | |
3238 | struct xdr_buf *xb = &resp->rqstp->rq_res; | |
3239 | struct nfsd4_compoundargs *args = resp->rqstp->rq_argp; | |
3240 | struct nfsd4_session *session = NULL; | |
3241 | struct nfsd4_slot *slot = resp->cstate.slot; | |
3242 | u32 length, tlen = 0, pad = 8; | |
3243 | ||
3244 | if (!nfsd4_has_session(&resp->cstate)) | |
3245 | return status; | |
3246 | ||
3247 | session = resp->cstate.session; | |
557ce264 | 3248 | if (session == NULL || slot->sl_cachethis == 0) |
496c262c AA |
3249 | return status; |
3250 | ||
3251 | if (resp->opcnt >= args->opcnt) | |
3252 | pad = 0; /* this is the last operation */ | |
3253 | ||
3254 | if (xb->page_len == 0) { | |
3255 | length = (char *)resp->p - (char *)xb->head[0].iov_base + pad; | |
3256 | } else { | |
3257 | if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0) | |
3258 | tlen = (char *)resp->p - (char *)xb->tail[0].iov_base; | |
3259 | ||
3260 | length = xb->head[0].iov_len + xb->page_len + tlen + pad; | |
3261 | } | |
3262 | dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__, | |
3263 | length, xb->page_len, tlen, pad); | |
3264 | ||
6c18ba9f | 3265 | if (length <= session->se_fchannel.maxresp_cached) |
496c262c AA |
3266 | return status; |
3267 | else | |
3268 | return nfserr_rep_too_big_to_cache; | |
3269 | } | |
3270 | ||
1da177e4 LT |
3271 | void |
3272 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3273 | { | |
2ebbc012 | 3274 | __be32 *statp; |
bc749ca4 | 3275 | __be32 *p; |
1da177e4 LT |
3276 | |
3277 | RESERVE_SPACE(8); | |
3278 | WRITE32(op->opnum); | |
3279 | statp = p++; /* to be backfilled at the end */ | |
3280 | ADJUST_ARGS(); | |
3281 | ||
695e12f8 BH |
3282 | if (op->opnum == OP_ILLEGAL) |
3283 | goto status; | |
3284 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || | |
3285 | !nfsd4_enc_ops[op->opnum]); | |
3286 | op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u); | |
496c262c AA |
3287 | /* nfsd4_check_drc_limit guarantees enough room for error status */ |
3288 | if (!op->status && nfsd4_check_drc_limit(resp)) | |
3289 | op->status = nfserr_rep_too_big_to_cache; | |
695e12f8 | 3290 | status: |
1da177e4 LT |
3291 | /* |
3292 | * Note: We write the status directly, instead of using WRITE32(), | |
3293 | * since it is already in network byte order. | |
3294 | */ | |
3295 | *statp = op->status; | |
3296 | } | |
3297 | ||
3298 | /* | |
3299 | * Encode the reply stored in the stateowner reply cache | |
3300 | * | |
3301 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
3302 | * previously sent already encoded operation. | |
3303 | * | |
3304 | * called with nfs4_lock_state() held | |
3305 | */ | |
3306 | void | |
3307 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3308 | { | |
bc749ca4 | 3309 | __be32 *p; |
1da177e4 LT |
3310 | struct nfs4_replay *rp = op->replay; |
3311 | ||
3312 | BUG_ON(!rp); | |
3313 | ||
3314 | RESERVE_SPACE(8); | |
3315 | WRITE32(op->opnum); | |
3316 | *p++ = rp->rp_status; /* already xdr'ed */ | |
3317 | ADJUST_ARGS(); | |
3318 | ||
3319 | RESERVE_SPACE(rp->rp_buflen); | |
3320 | WRITEMEM(rp->rp_buf, rp->rp_buflen); | |
3321 | ADJUST_ARGS(); | |
3322 | } | |
3323 | ||
1da177e4 | 3324 | int |
2ebbc012 | 3325 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
3326 | { |
3327 | return xdr_ressize_check(rqstp, p); | |
3328 | } | |
3329 | ||
3330 | void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args) | |
3331 | { | |
3332 | if (args->ops != args->iops) { | |
3333 | kfree(args->ops); | |
3334 | args->ops = args->iops; | |
3335 | } | |
f99d49ad JJ |
3336 | kfree(args->tmpp); |
3337 | args->tmpp = NULL; | |
1da177e4 LT |
3338 | while (args->to_free) { |
3339 | struct tmpbuf *tb = args->to_free; | |
3340 | args->to_free = tb->next; | |
3341 | tb->release(tb->buf); | |
3342 | kfree(tb); | |
3343 | } | |
3344 | } | |
3345 | ||
3346 | int | |
2ebbc012 | 3347 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 3348 | { |
b37ad28b | 3349 | __be32 status; |
1da177e4 LT |
3350 | |
3351 | args->p = p; | |
3352 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
3353 | args->pagelist = rqstp->rq_arg.pages; | |
3354 | args->pagelen = rqstp->rq_arg.page_len; | |
3355 | args->tmpp = NULL; | |
3356 | args->to_free = NULL; | |
3357 | args->ops = args->iops; | |
3358 | args->rqstp = rqstp; | |
3359 | ||
3360 | status = nfsd4_decode_compound(args); | |
3361 | if (status) { | |
3362 | nfsd4_release_compoundargs(args); | |
3363 | } | |
3364 | return !status; | |
3365 | } | |
3366 | ||
3367 | int | |
2ebbc012 | 3368 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
3369 | { |
3370 | /* | |
3371 | * All that remains is to write the tag and operation count... | |
3372 | */ | |
557ce264 | 3373 | struct nfsd4_compound_state *cs = &resp->cstate; |
1da177e4 LT |
3374 | struct kvec *iov; |
3375 | p = resp->tagp; | |
3376 | *p++ = htonl(resp->taglen); | |
3377 | memcpy(p, resp->tag, resp->taglen); | |
3378 | p += XDR_QUADLEN(resp->taglen); | |
3379 | *p++ = htonl(resp->opcnt); | |
3380 | ||
3381 | if (rqstp->rq_res.page_len) | |
3382 | iov = &rqstp->rq_res.tail[0]; | |
3383 | else | |
3384 | iov = &rqstp->rq_res.head[0]; | |
3385 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; | |
3386 | BUG_ON(iov->iov_len > PAGE_SIZE); | |
26c0c75e BF |
3387 | if (nfsd4_has_session(cs)) { |
3388 | if (cs->status != nfserr_replay_cache) { | |
3389 | nfsd4_store_cache_entry(resp); | |
3390 | dprintk("%s: SET SLOT STATE TO AVAILABLE\n", __func__); | |
dbd65a7e | 3391 | cs->slot->sl_inuse = false; |
26c0c75e | 3392 | } |
d7682988 BH |
3393 | /* Renew the clientid on success and on replay */ |
3394 | release_session_client(cs->session); | |
76407f76 | 3395 | nfsd4_put_session(cs->session); |
da3846a2 | 3396 | } |
1da177e4 LT |
3397 | return 1; |
3398 | } | |
3399 | ||
3400 | /* | |
3401 | * Local variables: | |
3402 | * c-basic-offset: 8 | |
3403 | * End: | |
3404 | */ |