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> |
17456804 | 47 | #include <linux/pagemap.h> |
4796f457 | 48 | #include <linux/sunrpc/svcauth_gss.h> |
9a74af21 | 49 | |
2ca72e17 BF |
50 | #include "idmap.h" |
51 | #include "acl.h" | |
9a74af21 | 52 | #include "xdr4.h" |
0a3adade | 53 | #include "vfs.h" |
17456804 | 54 | #include "state.h" |
1091006c | 55 | #include "cache.h" |
3d733711 | 56 | #include "netns.h" |
2ca72e17 | 57 | |
1da177e4 LT |
58 | #define NFSDDBG_FACILITY NFSDDBG_XDR |
59 | ||
42ca0993 BF |
60 | /* |
61 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing | |
62 | * directory in order to indicate to the client that a filesystem boundary is present | |
63 | * We use a fixed fsid for a referral | |
64 | */ | |
65 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL | |
66 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL | |
67 | ||
b37ad28b | 68 | static __be32 |
a36b1725 | 69 | check_filename(char *str, int len) |
1da177e4 LT |
70 | { |
71 | int i; | |
72 | ||
73 | if (len == 0) | |
74 | return nfserr_inval; | |
75 | if (isdotent(str, len)) | |
a36b1725 | 76 | return nfserr_badname; |
1da177e4 LT |
77 | for (i = 0; i < len; i++) |
78 | if (str[i] == '/') | |
a36b1725 | 79 | return nfserr_badname; |
1da177e4 LT |
80 | return 0; |
81 | } | |
82 | ||
1da177e4 | 83 | #define DECODE_HEAD \ |
2ebbc012 | 84 | __be32 *p; \ |
b37ad28b | 85 | __be32 status |
1da177e4 LT |
86 | #define DECODE_TAIL \ |
87 | status = 0; \ | |
88 | out: \ | |
89 | return status; \ | |
90 | xdr_error: \ | |
817cb9d4 CL |
91 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
92 | __FILE__, __LINE__); \ | |
1da177e4 LT |
93 | status = nfserr_bad_xdr; \ |
94 | goto out | |
95 | ||
96 | #define READ32(x) (x) = ntohl(*p++) | |
97 | #define READ64(x) do { \ | |
98 | (x) = (u64)ntohl(*p++) << 32; \ | |
99 | (x) |= ntohl(*p++); \ | |
100 | } while (0) | |
101 | #define READTIME(x) do { \ | |
102 | p++; \ | |
103 | (x) = ntohl(*p++); \ | |
104 | p++; \ | |
105 | } while (0) | |
106 | #define READMEM(x,nbytes) do { \ | |
107 | x = (char *)p; \ | |
108 | p += XDR_QUADLEN(nbytes); \ | |
109 | } while (0) | |
110 | #define SAVEMEM(x,nbytes) do { \ | |
111 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
112 | savemem(argp, p, nbytes) : \ | |
113 | (char *)p)) { \ | |
817cb9d4 CL |
114 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
115 | __FILE__, __LINE__); \ | |
1da177e4 LT |
116 | goto xdr_error; \ |
117 | } \ | |
118 | p += XDR_QUADLEN(nbytes); \ | |
119 | } while (0) | |
120 | #define COPYMEM(x,nbytes) do { \ | |
121 | memcpy((x), p, nbytes); \ | |
122 | p += XDR_QUADLEN(nbytes); \ | |
123 | } while (0) | |
124 | ||
125 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ | |
126 | #define READ_BUF(nbytes) do { \ | |
127 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ | |
128 | p = argp->p; \ | |
129 | argp->p += XDR_QUADLEN(nbytes); \ | |
130 | } else if (!(p = read_buf(argp, nbytes))) { \ | |
817cb9d4 CL |
131 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
132 | __FILE__, __LINE__); \ | |
1da177e4 LT |
133 | goto xdr_error; \ |
134 | } \ | |
135 | } while (0) | |
136 | ||
ca2a05aa | 137 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
1da177e4 LT |
138 | { |
139 | /* We want more bytes than seem to be available. | |
140 | * Maybe we need a new page, maybe we have just run out | |
141 | */ | |
ca2a05aa | 142 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
2ebbc012 | 143 | __be32 *p; |
1da177e4 LT |
144 | if (avail + argp->pagelen < nbytes) |
145 | return NULL; | |
146 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ | |
147 | return NULL; | |
148 | /* ok, we can do it with the current plus the next page */ | |
149 | if (nbytes <= sizeof(argp->tmp)) | |
150 | p = argp->tmp; | |
151 | else { | |
f99d49ad | 152 | kfree(argp->tmpp); |
1da177e4 LT |
153 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
154 | if (!p) | |
155 | return NULL; | |
156 | ||
157 | } | |
ca2a05aa BF |
158 | /* |
159 | * The following memcpy is safe because read_buf is always | |
160 | * called with nbytes > avail, and the two cases above both | |
161 | * guarantee p points to at least nbytes bytes. | |
162 | */ | |
1da177e4 LT |
163 | memcpy(p, argp->p, avail); |
164 | /* step to next page */ | |
165 | argp->p = page_address(argp->pagelist[0]); | |
166 | argp->pagelist++; | |
167 | if (argp->pagelen < PAGE_SIZE) { | |
2bc3c117 | 168 | argp->end = argp->p + (argp->pagelen>>2); |
1da177e4 LT |
169 | argp->pagelen = 0; |
170 | } else { | |
2bc3c117 | 171 | argp->end = argp->p + (PAGE_SIZE>>2); |
1da177e4 LT |
172 | argp->pagelen -= PAGE_SIZE; |
173 | } | |
174 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); | |
175 | argp->p += XDR_QUADLEN(nbytes - avail); | |
176 | return p; | |
177 | } | |
178 | ||
60adfc50 AA |
179 | static int zero_clientid(clientid_t *clid) |
180 | { | |
181 | return (clid->cl_boot == 0) && (clid->cl_id == 0); | |
182 | } | |
183 | ||
1da177e4 LT |
184 | static int |
185 | defer_free(struct nfsd4_compoundargs *argp, | |
186 | void (*release)(const void *), void *p) | |
187 | { | |
188 | struct tmpbuf *tb; | |
189 | ||
190 | tb = kmalloc(sizeof(*tb), GFP_KERNEL); | |
191 | if (!tb) | |
192 | return -ENOMEM; | |
193 | tb->buf = p; | |
194 | tb->release = release; | |
195 | tb->next = argp->to_free; | |
196 | argp->to_free = tb; | |
197 | return 0; | |
198 | } | |
199 | ||
2ebbc012 | 200 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
1da177e4 | 201 | { |
1da177e4 | 202 | if (p == argp->tmp) { |
67114fe6 | 203 | p = kmemdup(argp->tmp, nbytes, GFP_KERNEL); |
a4db5fe5 BF |
204 | if (!p) |
205 | return NULL; | |
1da177e4 | 206 | } else { |
73dff8be | 207 | BUG_ON(p != argp->tmpp); |
1da177e4 LT |
208 | argp->tmpp = NULL; |
209 | } | |
210 | if (defer_free(argp, kfree, p)) { | |
a4db5fe5 | 211 | kfree(p); |
1da177e4 LT |
212 | return NULL; |
213 | } else | |
214 | return (char *)p; | |
215 | } | |
216 | ||
b37ad28b | 217 | static __be32 |
1da177e4 LT |
218 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
219 | { | |
220 | u32 bmlen; | |
221 | DECODE_HEAD; | |
222 | ||
223 | bmval[0] = 0; | |
224 | bmval[1] = 0; | |
7e705706 | 225 | bmval[2] = 0; |
1da177e4 LT |
226 | |
227 | READ_BUF(4); | |
228 | READ32(bmlen); | |
229 | if (bmlen > 1000) | |
230 | goto xdr_error; | |
231 | ||
232 | READ_BUF(bmlen << 2); | |
233 | if (bmlen > 0) | |
234 | READ32(bmval[0]); | |
235 | if (bmlen > 1) | |
236 | READ32(bmval[1]); | |
7e705706 AA |
237 | if (bmlen > 2) |
238 | READ32(bmval[2]); | |
1da177e4 LT |
239 | |
240 | DECODE_TAIL; | |
241 | } | |
242 | ||
b37ad28b | 243 | static __be32 |
3c8e0316 | 244 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, |
c0d6fc8a | 245 | struct iattr *iattr, struct nfs4_acl **acl) |
1da177e4 LT |
246 | { |
247 | int expected_len, len = 0; | |
248 | u32 dummy32; | |
249 | char *buf; | |
b8dd7b9a | 250 | int host_err; |
1da177e4 LT |
251 | |
252 | DECODE_HEAD; | |
253 | iattr->ia_valid = 0; | |
254 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
255 | return status; | |
256 | ||
1da177e4 LT |
257 | READ_BUF(4); |
258 | READ32(expected_len); | |
259 | ||
260 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
261 | READ_BUF(8); | |
262 | len += 8; | |
263 | READ64(iattr->ia_size); | |
264 | iattr->ia_valid |= ATTR_SIZE; | |
265 | } | |
266 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
64a817cf | 267 | u32 nace; |
28e05dd8 | 268 | struct nfs4_ace *ace; |
1da177e4 LT |
269 | |
270 | READ_BUF(4); len += 4; | |
271 | READ32(nace); | |
272 | ||
28e05dd8 BF |
273 | if (nace > NFS4_ACL_MAX) |
274 | return nfserr_resource; | |
275 | ||
276 | *acl = nfs4_acl_new(nace); | |
1da177e4 | 277 | if (*acl == NULL) { |
b8dd7b9a | 278 | host_err = -ENOMEM; |
1da177e4 LT |
279 | goto out_nfserr; |
280 | } | |
28e05dd8 | 281 | defer_free(argp, kfree, *acl); |
1da177e4 | 282 | |
28e05dd8 BF |
283 | (*acl)->naces = nace; |
284 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { | |
1da177e4 | 285 | READ_BUF(16); len += 16; |
28e05dd8 BF |
286 | READ32(ace->type); |
287 | READ32(ace->flag); | |
288 | READ32(ace->access_mask); | |
1da177e4 LT |
289 | READ32(dummy32); |
290 | READ_BUF(dummy32); | |
291 | len += XDR_QUADLEN(dummy32) << 2; | |
292 | READMEM(buf, dummy32); | |
28e05dd8 | 293 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
3c726023 | 294 | status = nfs_ok; |
28e05dd8 | 295 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ab8e4aee | 296 | ; |
28e05dd8 | 297 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
3c726023 | 298 | status = nfsd_map_name_to_gid(argp->rqstp, |
ab8e4aee | 299 | buf, dummy32, &ace->who_gid); |
1da177e4 | 300 | else |
3c726023 | 301 | status = nfsd_map_name_to_uid(argp->rqstp, |
ab8e4aee | 302 | buf, dummy32, &ace->who_uid); |
3c726023 BF |
303 | if (status) |
304 | return status; | |
1da177e4 LT |
305 | } |
306 | } else | |
307 | *acl = NULL; | |
308 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
309 | READ_BUF(4); | |
310 | len += 4; | |
311 | READ32(iattr->ia_mode); | |
312 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); | |
313 | iattr->ia_valid |= ATTR_MODE; | |
314 | } | |
315 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
316 | READ_BUF(4); | |
317 | len += 4; | |
318 | READ32(dummy32); | |
319 | READ_BUF(dummy32); | |
320 | len += (XDR_QUADLEN(dummy32) << 2); | |
321 | READMEM(buf, dummy32); | |
47c85291 N |
322 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
323 | return status; | |
1da177e4 LT |
324 | iattr->ia_valid |= ATTR_UID; |
325 | } | |
326 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
327 | READ_BUF(4); | |
328 | len += 4; | |
329 | READ32(dummy32); | |
330 | READ_BUF(dummy32); | |
331 | len += (XDR_QUADLEN(dummy32) << 2); | |
332 | READMEM(buf, dummy32); | |
47c85291 N |
333 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
334 | return status; | |
1da177e4 LT |
335 | iattr->ia_valid |= ATTR_GID; |
336 | } | |
337 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
338 | READ_BUF(4); | |
339 | len += 4; | |
340 | READ32(dummy32); | |
341 | switch (dummy32) { | |
342 | case NFS4_SET_TO_CLIENT_TIME: | |
343 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
344 | all 32 bits of 'nseconds'. */ | |
345 | READ_BUF(12); | |
346 | len += 12; | |
347 | READ32(dummy32); | |
348 | if (dummy32) | |
349 | return nfserr_inval; | |
350 | READ32(iattr->ia_atime.tv_sec); | |
351 | READ32(iattr->ia_atime.tv_nsec); | |
352 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) | |
353 | return nfserr_inval; | |
354 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); | |
355 | break; | |
356 | case NFS4_SET_TO_SERVER_TIME: | |
357 | iattr->ia_valid |= ATTR_ATIME; | |
358 | break; | |
359 | default: | |
360 | goto xdr_error; | |
361 | } | |
362 | } | |
1da177e4 LT |
363 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
364 | READ_BUF(4); | |
365 | len += 4; | |
366 | READ32(dummy32); | |
367 | switch (dummy32) { | |
368 | case NFS4_SET_TO_CLIENT_TIME: | |
369 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
370 | all 32 bits of 'nseconds'. */ | |
371 | READ_BUF(12); | |
372 | len += 12; | |
373 | READ32(dummy32); | |
374 | if (dummy32) | |
375 | return nfserr_inval; | |
376 | READ32(iattr->ia_mtime.tv_sec); | |
377 | READ32(iattr->ia_mtime.tv_nsec); | |
378 | if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) | |
379 | return nfserr_inval; | |
380 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); | |
381 | break; | |
382 | case NFS4_SET_TO_SERVER_TIME: | |
383 | iattr->ia_valid |= ATTR_MTIME; | |
384 | break; | |
385 | default: | |
386 | goto xdr_error; | |
387 | } | |
388 | } | |
3c8e0316 YZ |
389 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
390 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 | |
391 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) | |
392 | READ_BUF(expected_len - len); | |
393 | else if (len != expected_len) | |
1da177e4 LT |
394 | goto xdr_error; |
395 | ||
396 | DECODE_TAIL; | |
397 | ||
398 | out_nfserr: | |
b8dd7b9a | 399 | status = nfserrno(host_err); |
1da177e4 LT |
400 | goto out; |
401 | } | |
402 | ||
e31a1b66 BH |
403 | static __be32 |
404 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
405 | { | |
406 | DECODE_HEAD; | |
407 | ||
408 | READ_BUF(sizeof(stateid_t)); | |
409 | READ32(sid->si_generation); | |
410 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
411 | ||
412 | DECODE_TAIL; | |
413 | } | |
414 | ||
b37ad28b | 415 | static __be32 |
1da177e4 LT |
416 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
417 | { | |
418 | DECODE_HEAD; | |
419 | ||
420 | READ_BUF(4); | |
421 | READ32(access->ac_req_access); | |
422 | ||
423 | DECODE_TAIL; | |
424 | } | |
425 | ||
acb2887e BF |
426 | static __be32 nfsd4_decode_cb_sec(struct nfsd4_compoundargs *argp, struct nfsd4_cb_sec *cbs) |
427 | { | |
428 | DECODE_HEAD; | |
12fc3e92 | 429 | u32 dummy, uid, gid; |
acb2887e BF |
430 | char *machine_name; |
431 | int i; | |
432 | int nr_secflavs; | |
433 | ||
434 | /* callback_sec_params4 */ | |
435 | READ_BUF(4); | |
436 | READ32(nr_secflavs); | |
12fc3e92 | 437 | cbs->flavor = (u32)(-1); |
acb2887e BF |
438 | for (i = 0; i < nr_secflavs; ++i) { |
439 | READ_BUF(4); | |
440 | READ32(dummy); | |
441 | switch (dummy) { | |
442 | case RPC_AUTH_NULL: | |
443 | /* Nothing to read */ | |
12fc3e92 BF |
444 | if (cbs->flavor == (u32)(-1)) |
445 | cbs->flavor = RPC_AUTH_NULL; | |
acb2887e BF |
446 | break; |
447 | case RPC_AUTH_UNIX: | |
448 | READ_BUF(8); | |
449 | /* stamp */ | |
450 | READ32(dummy); | |
451 | ||
452 | /* machine name */ | |
453 | READ32(dummy); | |
454 | READ_BUF(dummy); | |
455 | SAVEMEM(machine_name, dummy); | |
456 | ||
457 | /* uid, gid */ | |
458 | READ_BUF(8); | |
12fc3e92 BF |
459 | READ32(uid); |
460 | READ32(gid); | |
acb2887e BF |
461 | |
462 | /* more gids */ | |
463 | READ_BUF(4); | |
464 | READ32(dummy); | |
465 | READ_BUF(dummy * 4); | |
12fc3e92 | 466 | if (cbs->flavor == (u32)(-1)) { |
03bc6d1c EB |
467 | kuid_t kuid = make_kuid(&init_user_ns, uid); |
468 | kgid_t kgid = make_kgid(&init_user_ns, gid); | |
469 | if (uid_valid(kuid) && gid_valid(kgid)) { | |
470 | cbs->uid = kuid; | |
471 | cbs->gid = kgid; | |
472 | cbs->flavor = RPC_AUTH_UNIX; | |
473 | } else { | |
474 | dprintk("RPC_AUTH_UNIX with invalid" | |
475 | "uid or gid ignoring!\n"); | |
476 | } | |
12fc3e92 | 477 | } |
acb2887e BF |
478 | break; |
479 | case RPC_AUTH_GSS: | |
480 | dprintk("RPC_AUTH_GSS callback secflavor " | |
481 | "not supported!\n"); | |
482 | READ_BUF(8); | |
483 | /* gcbp_service */ | |
484 | READ32(dummy); | |
485 | /* gcbp_handle_from_server */ | |
486 | READ32(dummy); | |
487 | READ_BUF(dummy); | |
488 | p += XDR_QUADLEN(dummy); | |
489 | /* gcbp_handle_from_client */ | |
490 | READ_BUF(4); | |
491 | READ32(dummy); | |
492 | READ_BUF(dummy); | |
493 | break; | |
494 | default: | |
495 | dprintk("Illegal callback secflavor\n"); | |
496 | return nfserr_inval; | |
497 | } | |
498 | } | |
499 | DECODE_TAIL; | |
500 | } | |
501 | ||
cb73a9f4 BF |
502 | static __be32 nfsd4_decode_backchannel_ctl(struct nfsd4_compoundargs *argp, struct nfsd4_backchannel_ctl *bc) |
503 | { | |
504 | DECODE_HEAD; | |
505 | ||
506 | READ_BUF(4); | |
507 | READ32(bc->bc_cb_program); | |
508 | nfsd4_decode_cb_sec(argp, &bc->bc_cb_sec); | |
509 | ||
510 | DECODE_TAIL; | |
511 | } | |
512 | ||
1d1bc8f2 BF |
513 | static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) |
514 | { | |
515 | DECODE_HEAD; | |
1d1bc8f2 BF |
516 | |
517 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 8); | |
518 | COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
519 | READ32(bcts->dir); | |
6ce2357f BS |
520 | /* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker |
521 | * could help us figure out we should be using it. */ | |
1d1bc8f2 BF |
522 | DECODE_TAIL; |
523 | } | |
524 | ||
b37ad28b | 525 | static __be32 |
1da177e4 LT |
526 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
527 | { | |
528 | DECODE_HEAD; | |
529 | ||
e31a1b66 | 530 | READ_BUF(4); |
1da177e4 | 531 | READ32(close->cl_seqid); |
e31a1b66 | 532 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
1da177e4 LT |
533 | |
534 | DECODE_TAIL; | |
535 | } | |
536 | ||
537 | ||
b37ad28b | 538 | static __be32 |
1da177e4 LT |
539 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
540 | { | |
541 | DECODE_HEAD; | |
542 | ||
543 | READ_BUF(12); | |
544 | READ64(commit->co_offset); | |
545 | READ32(commit->co_count); | |
546 | ||
547 | DECODE_TAIL; | |
548 | } | |
549 | ||
b37ad28b | 550 | static __be32 |
1da177e4 LT |
551 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
552 | { | |
553 | DECODE_HEAD; | |
554 | ||
555 | READ_BUF(4); | |
556 | READ32(create->cr_type); | |
557 | switch (create->cr_type) { | |
558 | case NF4LNK: | |
559 | READ_BUF(4); | |
560 | READ32(create->cr_linklen); | |
561 | READ_BUF(create->cr_linklen); | |
562 | SAVEMEM(create->cr_linkname, create->cr_linklen); | |
563 | break; | |
564 | case NF4BLK: | |
565 | case NF4CHR: | |
566 | READ_BUF(8); | |
567 | READ32(create->cr_specdata1); | |
568 | READ32(create->cr_specdata2); | |
569 | break; | |
570 | case NF4SOCK: | |
571 | case NF4FIFO: | |
572 | case NF4DIR: | |
573 | default: | |
574 | break; | |
575 | } | |
576 | ||
577 | READ_BUF(4); | |
578 | READ32(create->cr_namelen); | |
579 | READ_BUF(create->cr_namelen); | |
580 | SAVEMEM(create->cr_name, create->cr_namelen); | |
a36b1725 | 581 | if ((status = check_filename(create->cr_name, create->cr_namelen))) |
1da177e4 LT |
582 | return status; |
583 | ||
3c8e0316 YZ |
584 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
585 | &create->cr_acl); | |
c0d6fc8a | 586 | if (status) |
1da177e4 LT |
587 | goto out; |
588 | ||
589 | DECODE_TAIL; | |
590 | } | |
591 | ||
b37ad28b | 592 | static inline __be32 |
1da177e4 LT |
593 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
594 | { | |
e31a1b66 | 595 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
1da177e4 LT |
596 | } |
597 | ||
b37ad28b | 598 | static inline __be32 |
1da177e4 LT |
599 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
600 | { | |
601 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
602 | } | |
603 | ||
b37ad28b | 604 | static __be32 |
1da177e4 LT |
605 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
606 | { | |
607 | DECODE_HEAD; | |
608 | ||
609 | READ_BUF(4); | |
610 | READ32(link->li_namelen); | |
611 | READ_BUF(link->li_namelen); | |
612 | SAVEMEM(link->li_name, link->li_namelen); | |
a36b1725 | 613 | if ((status = check_filename(link->li_name, link->li_namelen))) |
1da177e4 LT |
614 | return status; |
615 | ||
616 | DECODE_TAIL; | |
617 | } | |
618 | ||
b37ad28b | 619 | static __be32 |
1da177e4 LT |
620 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
621 | { | |
622 | DECODE_HEAD; | |
623 | ||
1da177e4 LT |
624 | /* |
625 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
626 | */ | |
627 | READ_BUF(28); | |
628 | READ32(lock->lk_type); | |
629 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) | |
630 | goto xdr_error; | |
631 | READ32(lock->lk_reclaim); | |
632 | READ64(lock->lk_offset); | |
633 | READ64(lock->lk_length); | |
634 | READ32(lock->lk_is_new); | |
635 | ||
636 | if (lock->lk_is_new) { | |
e31a1b66 | 637 | READ_BUF(4); |
1da177e4 | 638 | READ32(lock->lk_new_open_seqid); |
e31a1b66 BH |
639 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
640 | if (status) | |
641 | return status; | |
642 | READ_BUF(8 + sizeof(clientid_t)); | |
1da177e4 LT |
643 | READ32(lock->lk_new_lock_seqid); |
644 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); | |
645 | READ32(lock->lk_new_owner.len); | |
646 | READ_BUF(lock->lk_new_owner.len); | |
647 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
648 | } else { | |
e31a1b66 BH |
649 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
650 | if (status) | |
651 | return status; | |
652 | READ_BUF(4); | |
1da177e4 LT |
653 | READ32(lock->lk_old_lock_seqid); |
654 | } | |
655 | ||
656 | DECODE_TAIL; | |
657 | } | |
658 | ||
b37ad28b | 659 | static __be32 |
1da177e4 LT |
660 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
661 | { | |
662 | DECODE_HEAD; | |
663 | ||
664 | READ_BUF(32); | |
665 | READ32(lockt->lt_type); | |
666 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) | |
667 | goto xdr_error; | |
668 | READ64(lockt->lt_offset); | |
669 | READ64(lockt->lt_length); | |
670 | COPYMEM(&lockt->lt_clientid, 8); | |
671 | READ32(lockt->lt_owner.len); | |
672 | READ_BUF(lockt->lt_owner.len); | |
673 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
674 | ||
675 | DECODE_TAIL; | |
676 | } | |
677 | ||
b37ad28b | 678 | static __be32 |
1da177e4 LT |
679 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
680 | { | |
681 | DECODE_HEAD; | |
682 | ||
e31a1b66 | 683 | READ_BUF(8); |
1da177e4 LT |
684 | READ32(locku->lu_type); |
685 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) | |
686 | goto xdr_error; | |
687 | READ32(locku->lu_seqid); | |
e31a1b66 BH |
688 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
689 | if (status) | |
690 | return status; | |
691 | READ_BUF(16); | |
1da177e4 LT |
692 | READ64(locku->lu_offset); |
693 | READ64(locku->lu_length); | |
694 | ||
695 | DECODE_TAIL; | |
696 | } | |
697 | ||
b37ad28b | 698 | static __be32 |
1da177e4 LT |
699 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
700 | { | |
701 | DECODE_HEAD; | |
702 | ||
703 | READ_BUF(4); | |
704 | READ32(lookup->lo_len); | |
705 | READ_BUF(lookup->lo_len); | |
706 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
a36b1725 | 707 | if ((status = check_filename(lookup->lo_name, lookup->lo_len))) |
1da177e4 LT |
708 | return status; |
709 | ||
710 | DECODE_TAIL; | |
711 | } | |
712 | ||
2c8bd7e0 | 713 | static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when) |
04f9e664 BF |
714 | { |
715 | __be32 *p; | |
716 | u32 w; | |
717 | ||
718 | READ_BUF(4); | |
719 | READ32(w); | |
2c8bd7e0 BH |
720 | *share_access = w & NFS4_SHARE_ACCESS_MASK; |
721 | *deleg_want = w & NFS4_SHARE_WANT_MASK; | |
722 | if (deleg_when) | |
723 | *deleg_when = w & NFS4_SHARE_WHEN_MASK; | |
724 | ||
04f9e664 BF |
725 | switch (w & NFS4_SHARE_ACCESS_MASK) { |
726 | case NFS4_SHARE_ACCESS_READ: | |
727 | case NFS4_SHARE_ACCESS_WRITE: | |
728 | case NFS4_SHARE_ACCESS_BOTH: | |
729 | break; | |
730 | default: | |
731 | return nfserr_bad_xdr; | |
732 | } | |
fc0d14fe | 733 | w &= ~NFS4_SHARE_ACCESS_MASK; |
04f9e664 BF |
734 | if (!w) |
735 | return nfs_ok; | |
736 | if (!argp->minorversion) | |
737 | return nfserr_bad_xdr; | |
738 | switch (w & NFS4_SHARE_WANT_MASK) { | |
739 | case NFS4_SHARE_WANT_NO_PREFERENCE: | |
740 | case NFS4_SHARE_WANT_READ_DELEG: | |
741 | case NFS4_SHARE_WANT_WRITE_DELEG: | |
742 | case NFS4_SHARE_WANT_ANY_DELEG: | |
743 | case NFS4_SHARE_WANT_NO_DELEG: | |
744 | case NFS4_SHARE_WANT_CANCEL: | |
745 | break; | |
746 | default: | |
747 | return nfserr_bad_xdr; | |
748 | } | |
92bac8c5 | 749 | w &= ~NFS4_SHARE_WANT_MASK; |
04f9e664 BF |
750 | if (!w) |
751 | return nfs_ok; | |
2c8bd7e0 BH |
752 | |
753 | if (!deleg_when) /* open_downgrade */ | |
754 | return nfserr_inval; | |
04f9e664 BF |
755 | switch (w) { |
756 | case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL: | |
757 | case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED: | |
c668fc6d BH |
758 | case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL | |
759 | NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED): | |
04f9e664 BF |
760 | return nfs_ok; |
761 | } | |
762 | xdr_error: | |
763 | return nfserr_bad_xdr; | |
764 | } | |
765 | ||
766 | static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x) | |
767 | { | |
768 | __be32 *p; | |
769 | ||
770 | READ_BUF(4); | |
771 | READ32(*x); | |
772 | /* Note: unlinke access bits, deny bits may be zero. */ | |
01cd4afa | 773 | if (*x & ~NFS4_SHARE_DENY_BOTH) |
04f9e664 BF |
774 | return nfserr_bad_xdr; |
775 | return nfs_ok; | |
776 | xdr_error: | |
777 | return nfserr_bad_xdr; | |
778 | } | |
779 | ||
a084daf5 BF |
780 | static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o) |
781 | { | |
782 | __be32 *p; | |
783 | ||
784 | READ_BUF(4); | |
785 | READ32(o->len); | |
786 | ||
787 | if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT) | |
788 | return nfserr_bad_xdr; | |
789 | ||
790 | READ_BUF(o->len); | |
791 | SAVEMEM(o->data, o->len); | |
792 | return nfs_ok; | |
793 | xdr_error: | |
794 | return nfserr_bad_xdr; | |
795 | } | |
796 | ||
b37ad28b | 797 | static __be32 |
1da177e4 LT |
798 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
799 | { | |
800 | DECODE_HEAD; | |
2c8bd7e0 | 801 | u32 dummy; |
1da177e4 LT |
802 | |
803 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
804 | open->op_iattr.ia_valid = 0; | |
fe0750e5 | 805 | open->op_openowner = NULL; |
1da177e4 | 806 | |
9d313b17 | 807 | open->op_xdr_error = 0; |
1da177e4 | 808 | /* seqid, share_access, share_deny, clientid, ownerlen */ |
04f9e664 | 809 | READ_BUF(4); |
1da177e4 | 810 | READ32(open->op_seqid); |
2c8bd7e0 BH |
811 | /* decode, yet ignore deleg_when until supported */ |
812 | status = nfsd4_decode_share_access(argp, &open->op_share_access, | |
813 | &open->op_deleg_want, &dummy); | |
04f9e664 BF |
814 | if (status) |
815 | goto xdr_error; | |
816 | status = nfsd4_decode_share_deny(argp, &open->op_share_deny); | |
817 | if (status) | |
818 | goto xdr_error; | |
a084daf5 | 819 | READ_BUF(sizeof(clientid_t)); |
1da177e4 | 820 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); |
a084daf5 BF |
821 | status = nfsd4_decode_opaque(argp, &open->op_owner); |
822 | if (status) | |
823 | goto xdr_error; | |
824 | READ_BUF(4); | |
1da177e4 LT |
825 | READ32(open->op_create); |
826 | switch (open->op_create) { | |
827 | case NFS4_OPEN_NOCREATE: | |
828 | break; | |
829 | case NFS4_OPEN_CREATE: | |
830 | READ_BUF(4); | |
831 | READ32(open->op_createmode); | |
832 | switch (open->op_createmode) { | |
833 | case NFS4_CREATE_UNCHECKED: | |
834 | case NFS4_CREATE_GUARDED: | |
c0d6fc8a | 835 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
3c8e0316 | 836 | &open->op_iattr, &open->op_acl); |
c0d6fc8a | 837 | if (status) |
1da177e4 LT |
838 | goto out; |
839 | break; | |
840 | case NFS4_CREATE_EXCLUSIVE: | |
ab4684d1 CL |
841 | READ_BUF(NFS4_VERIFIER_SIZE); |
842 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 843 | break; |
79fb54ab BH |
844 | case NFS4_CREATE_EXCLUSIVE4_1: |
845 | if (argp->minorversion < 1) | |
846 | goto xdr_error; | |
ab4684d1 CL |
847 | READ_BUF(NFS4_VERIFIER_SIZE); |
848 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
79fb54ab | 849 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
3c8e0316 | 850 | &open->op_iattr, &open->op_acl); |
79fb54ab BH |
851 | if (status) |
852 | goto out; | |
853 | break; | |
1da177e4 LT |
854 | default: |
855 | goto xdr_error; | |
856 | } | |
857 | break; | |
858 | default: | |
859 | goto xdr_error; | |
860 | } | |
861 | ||
862 | /* open_claim */ | |
863 | READ_BUF(4); | |
864 | READ32(open->op_claim_type); | |
865 | switch (open->op_claim_type) { | |
866 | case NFS4_OPEN_CLAIM_NULL: | |
867 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
868 | READ_BUF(4); | |
869 | READ32(open->op_fname.len); | |
870 | READ_BUF(open->op_fname.len); | |
871 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 872 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
873 | return status; |
874 | break; | |
875 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
876 | READ_BUF(4); | |
877 | READ32(open->op_delegate_type); | |
878 | break; | |
879 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
e31a1b66 BH |
880 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
881 | if (status) | |
882 | return status; | |
883 | READ_BUF(4); | |
1da177e4 LT |
884 | READ32(open->op_fname.len); |
885 | READ_BUF(open->op_fname.len); | |
886 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 887 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
888 | return status; |
889 | break; | |
8b289b2c BF |
890 | case NFS4_OPEN_CLAIM_FH: |
891 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
892 | if (argp->minorversion < 1) | |
893 | goto xdr_error; | |
894 | /* void */ | |
895 | break; | |
896 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
897 | if (argp->minorversion < 1) | |
898 | goto xdr_error; | |
899 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); | |
900 | if (status) | |
901 | return status; | |
902 | break; | |
1da177e4 LT |
903 | default: |
904 | goto xdr_error; | |
905 | } | |
906 | ||
907 | DECODE_TAIL; | |
908 | } | |
909 | ||
b37ad28b | 910 | static __be32 |
1da177e4 LT |
911 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
912 | { | |
913 | DECODE_HEAD; | |
914 | ||
e31a1b66 BH |
915 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
916 | if (status) | |
917 | return status; | |
918 | READ_BUF(4); | |
1da177e4 LT |
919 | READ32(open_conf->oc_seqid); |
920 | ||
921 | DECODE_TAIL; | |
922 | } | |
923 | ||
b37ad28b | 924 | static __be32 |
1da177e4 LT |
925 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
926 | { | |
927 | DECODE_HEAD; | |
928 | ||
e31a1b66 BH |
929 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
930 | if (status) | |
931 | return status; | |
04f9e664 | 932 | READ_BUF(4); |
1da177e4 | 933 | READ32(open_down->od_seqid); |
2c8bd7e0 BH |
934 | status = nfsd4_decode_share_access(argp, &open_down->od_share_access, |
935 | &open_down->od_deleg_want, NULL); | |
04f9e664 BF |
936 | if (status) |
937 | return status; | |
938 | status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny); | |
939 | if (status) | |
940 | return status; | |
1da177e4 LT |
941 | DECODE_TAIL; |
942 | } | |
943 | ||
b37ad28b | 944 | static __be32 |
1da177e4 LT |
945 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
946 | { | |
947 | DECODE_HEAD; | |
948 | ||
949 | READ_BUF(4); | |
950 | READ32(putfh->pf_fhlen); | |
951 | if (putfh->pf_fhlen > NFS4_FHSIZE) | |
952 | goto xdr_error; | |
953 | READ_BUF(putfh->pf_fhlen); | |
954 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
955 | ||
956 | DECODE_TAIL; | |
957 | } | |
958 | ||
b37ad28b | 959 | static __be32 |
1da177e4 LT |
960 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
961 | { | |
962 | DECODE_HEAD; | |
963 | ||
e31a1b66 BH |
964 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
965 | if (status) | |
966 | return status; | |
967 | READ_BUF(12); | |
1da177e4 LT |
968 | READ64(read->rd_offset); |
969 | READ32(read->rd_length); | |
970 | ||
971 | DECODE_TAIL; | |
972 | } | |
973 | ||
b37ad28b | 974 | static __be32 |
1da177e4 LT |
975 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
976 | { | |
977 | DECODE_HEAD; | |
978 | ||
979 | READ_BUF(24); | |
980 | READ64(readdir->rd_cookie); | |
981 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); | |
982 | READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ | |
983 | READ32(readdir->rd_maxcount); | |
984 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) | |
985 | goto out; | |
986 | ||
987 | DECODE_TAIL; | |
988 | } | |
989 | ||
b37ad28b | 990 | static __be32 |
1da177e4 LT |
991 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
992 | { | |
993 | DECODE_HEAD; | |
994 | ||
995 | READ_BUF(4); | |
996 | READ32(remove->rm_namelen); | |
997 | READ_BUF(remove->rm_namelen); | |
998 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
a36b1725 | 999 | if ((status = check_filename(remove->rm_name, remove->rm_namelen))) |
1da177e4 LT |
1000 | return status; |
1001 | ||
1002 | DECODE_TAIL; | |
1003 | } | |
1004 | ||
b37ad28b | 1005 | static __be32 |
1da177e4 LT |
1006 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
1007 | { | |
1008 | DECODE_HEAD; | |
1009 | ||
1010 | READ_BUF(4); | |
1011 | READ32(rename->rn_snamelen); | |
1012 | READ_BUF(rename->rn_snamelen + 4); | |
1013 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); | |
1014 | READ32(rename->rn_tnamelen); | |
1015 | READ_BUF(rename->rn_tnamelen); | |
1016 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
a36b1725 | 1017 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen))) |
1da177e4 | 1018 | return status; |
a36b1725 | 1019 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen))) |
1da177e4 LT |
1020 | return status; |
1021 | ||
1022 | DECODE_TAIL; | |
1023 | } | |
1024 | ||
b37ad28b | 1025 | static __be32 |
1da177e4 LT |
1026 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
1027 | { | |
1028 | DECODE_HEAD; | |
1029 | ||
1030 | READ_BUF(sizeof(clientid_t)); | |
1031 | COPYMEM(clientid, sizeof(clientid_t)); | |
1032 | ||
1033 | DECODE_TAIL; | |
1034 | } | |
1035 | ||
dcb488a3 AA |
1036 | static __be32 |
1037 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
1038 | struct nfsd4_secinfo *secinfo) | |
1039 | { | |
1040 | DECODE_HEAD; | |
1041 | ||
1042 | READ_BUF(4); | |
1043 | READ32(secinfo->si_namelen); | |
1044 | READ_BUF(secinfo->si_namelen); | |
1045 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
a36b1725 | 1046 | status = check_filename(secinfo->si_name, secinfo->si_namelen); |
dcb488a3 AA |
1047 | if (status) |
1048 | return status; | |
1049 | DECODE_TAIL; | |
1050 | } | |
1051 | ||
04f4ad16 BF |
1052 | static __be32 |
1053 | nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, | |
1054 | struct nfsd4_secinfo_no_name *sin) | |
1055 | { | |
1056 | DECODE_HEAD; | |
1057 | ||
1058 | READ_BUF(4); | |
1059 | READ32(sin->sin_style); | |
1060 | DECODE_TAIL; | |
1061 | } | |
1062 | ||
b37ad28b | 1063 | static __be32 |
1da177e4 LT |
1064 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
1065 | { | |
e31a1b66 | 1066 | __be32 status; |
1da177e4 | 1067 | |
e31a1b66 BH |
1068 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
1069 | if (status) | |
1070 | return status; | |
3c8e0316 YZ |
1071 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
1072 | &setattr->sa_acl); | |
1da177e4 LT |
1073 | } |
1074 | ||
b37ad28b | 1075 | static __be32 |
1da177e4 LT |
1076 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
1077 | { | |
1078 | DECODE_HEAD; | |
1079 | ||
ab4684d1 CL |
1080 | READ_BUF(NFS4_VERIFIER_SIZE); |
1081 | COPYMEM(setclientid->se_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 1082 | |
a084daf5 BF |
1083 | status = nfsd4_decode_opaque(argp, &setclientid->se_name); |
1084 | if (status) | |
1085 | return nfserr_bad_xdr; | |
1086 | READ_BUF(8); | |
1da177e4 LT |
1087 | READ32(setclientid->se_callback_prog); |
1088 | READ32(setclientid->se_callback_netid_len); | |
1089 | ||
1090 | READ_BUF(setclientid->se_callback_netid_len + 4); | |
1091 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); | |
1092 | READ32(setclientid->se_callback_addr_len); | |
1093 | ||
1094 | READ_BUF(setclientid->se_callback_addr_len + 4); | |
1095 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); | |
1096 | READ32(setclientid->se_callback_ident); | |
1097 | ||
1098 | DECODE_TAIL; | |
1099 | } | |
1100 | ||
b37ad28b | 1101 | static __be32 |
1da177e4 LT |
1102 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
1103 | { | |
1104 | DECODE_HEAD; | |
1105 | ||
ab4684d1 | 1106 | READ_BUF(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 1107 | COPYMEM(&scd_c->sc_clientid, 8); |
ab4684d1 | 1108 | COPYMEM(&scd_c->sc_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
1109 | |
1110 | DECODE_TAIL; | |
1111 | } | |
1112 | ||
1113 | /* Also used for NVERIFY */ | |
b37ad28b | 1114 | static __be32 |
1da177e4 LT |
1115 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
1116 | { | |
1da177e4 LT |
1117 | DECODE_HEAD; |
1118 | ||
1119 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
1120 | goto out; | |
1121 | ||
1122 | /* For convenience's sake, we compare raw xdr'd attributes in | |
e5f95703 BF |
1123 | * nfsd4_proc_verify */ |
1124 | ||
1da177e4 LT |
1125 | READ_BUF(4); |
1126 | READ32(verify->ve_attrlen); | |
1127 | READ_BUF(verify->ve_attrlen); | |
1128 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
1129 | ||
1130 | DECODE_TAIL; | |
1131 | } | |
1132 | ||
b37ad28b | 1133 | static __be32 |
1da177e4 LT |
1134 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
1135 | { | |
1136 | int avail; | |
1da177e4 LT |
1137 | int len; |
1138 | DECODE_HEAD; | |
1139 | ||
e31a1b66 BH |
1140 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
1141 | if (status) | |
1142 | return status; | |
1143 | READ_BUF(16); | |
1da177e4 LT |
1144 | READ64(write->wr_offset); |
1145 | READ32(write->wr_stable_how); | |
1146 | if (write->wr_stable_how > 2) | |
1147 | goto xdr_error; | |
1148 | READ32(write->wr_buflen); | |
1149 | ||
1150 | /* Sorry .. no magic macros for this.. * | |
1151 | * READ_BUF(write->wr_buflen); | |
1152 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
1153 | */ | |
1154 | avail = (char*)argp->end - (char*)argp->p; | |
1155 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
1156 | dprintk("NFSD: xdr error (%s:%d)\n", |
1157 | __FILE__, __LINE__); | |
1da177e4 LT |
1158 | goto xdr_error; |
1159 | } | |
70cc7f75 BF |
1160 | write->wr_head.iov_base = p; |
1161 | write->wr_head.iov_len = avail; | |
5a80a54d | 1162 | WARN_ON(avail != (XDR_QUADLEN(avail) << 2)); |
70cc7f75 | 1163 | write->wr_pagelist = argp->pagelist; |
5a80a54d BF |
1164 | |
1165 | len = XDR_QUADLEN(write->wr_buflen) << 2; | |
1166 | if (len >= avail) { | |
1167 | int pages; | |
1168 | ||
1169 | len -= avail; | |
1170 | ||
1171 | pages = len >> PAGE_SHIFT; | |
1172 | argp->pagelist += pages; | |
1173 | argp->pagelen -= pages * PAGE_SIZE; | |
1174 | len -= pages * PAGE_SIZE; | |
1175 | ||
1176 | argp->p = (__be32 *)page_address(argp->pagelist[0]); | |
1177 | argp->end = argp->p + XDR_QUADLEN(PAGE_SIZE); | |
1da177e4 | 1178 | } |
5a80a54d | 1179 | argp->p += XDR_QUADLEN(len); |
1da177e4 LT |
1180 | |
1181 | DECODE_TAIL; | |
1182 | } | |
1183 | ||
b37ad28b | 1184 | static __be32 |
1da177e4 LT |
1185 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
1186 | { | |
1187 | DECODE_HEAD; | |
1188 | ||
1189 | READ_BUF(12); | |
1190 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
1191 | READ32(rlockowner->rl_owner.len); | |
1192 | READ_BUF(rlockowner->rl_owner.len); | |
1193 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
1194 | ||
60adfc50 AA |
1195 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1196 | return nfserr_inval; | |
1da177e4 LT |
1197 | DECODE_TAIL; |
1198 | } | |
1199 | ||
2db134eb AA |
1200 | static __be32 |
1201 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1202 | struct nfsd4_exchange_id *exid) |
2db134eb | 1203 | { |
5afa040b | 1204 | int dummy, tmp; |
0733d213 AA |
1205 | DECODE_HEAD; |
1206 | ||
1207 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1208 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1209 | ||
a084daf5 BF |
1210 | status = nfsd4_decode_opaque(argp, &exid->clname); |
1211 | if (status) | |
1212 | return nfserr_bad_xdr; | |
0733d213 AA |
1213 | |
1214 | READ_BUF(4); | |
1215 | READ32(exid->flags); | |
1216 | ||
1217 | /* Ignore state_protect4_a */ | |
1218 | READ_BUF(4); | |
1219 | READ32(exid->spa_how); | |
1220 | switch (exid->spa_how) { | |
1221 | case SP4_NONE: | |
1222 | break; | |
1223 | case SP4_MACH_CRED: | |
1224 | /* spo_must_enforce */ | |
1225 | READ_BUF(4); | |
1226 | READ32(dummy); | |
1227 | READ_BUF(dummy * 4); | |
1228 | p += dummy; | |
1229 | ||
1230 | /* spo_must_allow */ | |
1231 | READ_BUF(4); | |
1232 | READ32(dummy); | |
1233 | READ_BUF(dummy * 4); | |
1234 | p += dummy; | |
1235 | break; | |
1236 | case SP4_SSV: | |
1237 | /* ssp_ops */ | |
1238 | READ_BUF(4); | |
1239 | READ32(dummy); | |
1240 | READ_BUF(dummy * 4); | |
1241 | p += dummy; | |
1242 | ||
1243 | READ_BUF(4); | |
1244 | READ32(dummy); | |
1245 | READ_BUF(dummy * 4); | |
1246 | p += dummy; | |
1247 | ||
1248 | /* ssp_hash_algs<> */ | |
1249 | READ_BUF(4); | |
5afa040b MJ |
1250 | READ32(tmp); |
1251 | while (tmp--) { | |
1252 | READ_BUF(4); | |
1253 | READ32(dummy); | |
1254 | READ_BUF(dummy); | |
1255 | p += XDR_QUADLEN(dummy); | |
1256 | } | |
0733d213 AA |
1257 | |
1258 | /* ssp_encr_algs<> */ | |
1259 | READ_BUF(4); | |
5afa040b MJ |
1260 | READ32(tmp); |
1261 | while (tmp--) { | |
1262 | READ_BUF(4); | |
1263 | READ32(dummy); | |
1264 | READ_BUF(dummy); | |
1265 | p += XDR_QUADLEN(dummy); | |
1266 | } | |
0733d213 AA |
1267 | |
1268 | /* ssp_window and ssp_num_gss_handles */ | |
1269 | READ_BUF(8); | |
1270 | READ32(dummy); | |
1271 | READ32(dummy); | |
1272 | break; | |
1273 | default: | |
1274 | goto xdr_error; | |
1275 | } | |
1276 | ||
1277 | /* Ignore Implementation ID */ | |
1278 | READ_BUF(4); /* nfs_impl_id4 array length */ | |
1279 | READ32(dummy); | |
1280 | ||
1281 | if (dummy > 1) | |
1282 | goto xdr_error; | |
1283 | ||
1284 | if (dummy == 1) { | |
1285 | /* nii_domain */ | |
1286 | READ_BUF(4); | |
1287 | READ32(dummy); | |
1288 | READ_BUF(dummy); | |
1289 | p += XDR_QUADLEN(dummy); | |
1290 | ||
1291 | /* nii_name */ | |
1292 | READ_BUF(4); | |
1293 | READ32(dummy); | |
1294 | READ_BUF(dummy); | |
1295 | p += XDR_QUADLEN(dummy); | |
1296 | ||
1297 | /* nii_date */ | |
1298 | READ_BUF(12); | |
1299 | p += 3; | |
1300 | } | |
1301 | DECODE_TAIL; | |
2db134eb AA |
1302 | } |
1303 | ||
1304 | static __be32 | |
1305 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1306 | struct nfsd4_create_session *sess) | |
1307 | { | |
ec6b5d7b | 1308 | DECODE_HEAD; |
ec6b5d7b | 1309 | u32 dummy; |
ec6b5d7b AA |
1310 | |
1311 | READ_BUF(16); | |
1312 | COPYMEM(&sess->clientid, 8); | |
1313 | READ32(sess->seqid); | |
1314 | READ32(sess->flags); | |
1315 | ||
1316 | /* Fore channel attrs */ | |
1317 | READ_BUF(28); | |
1318 | READ32(dummy); /* headerpadsz is always 0 */ | |
1319 | READ32(sess->fore_channel.maxreq_sz); | |
1320 | READ32(sess->fore_channel.maxresp_sz); | |
1321 | READ32(sess->fore_channel.maxresp_cached); | |
1322 | READ32(sess->fore_channel.maxops); | |
1323 | READ32(sess->fore_channel.maxreqs); | |
1324 | READ32(sess->fore_channel.nr_rdma_attrs); | |
1325 | if (sess->fore_channel.nr_rdma_attrs == 1) { | |
1326 | READ_BUF(4); | |
1327 | READ32(sess->fore_channel.rdma_attrs); | |
1328 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { | |
1329 | dprintk("Too many fore channel attr bitmaps!\n"); | |
1330 | goto xdr_error; | |
1331 | } | |
1332 | ||
1333 | /* Back channel attrs */ | |
1334 | READ_BUF(28); | |
1335 | READ32(dummy); /* headerpadsz is always 0 */ | |
1336 | READ32(sess->back_channel.maxreq_sz); | |
1337 | READ32(sess->back_channel.maxresp_sz); | |
1338 | READ32(sess->back_channel.maxresp_cached); | |
1339 | READ32(sess->back_channel.maxops); | |
1340 | READ32(sess->back_channel.maxreqs); | |
1341 | READ32(sess->back_channel.nr_rdma_attrs); | |
1342 | if (sess->back_channel.nr_rdma_attrs == 1) { | |
1343 | READ_BUF(4); | |
1344 | READ32(sess->back_channel.rdma_attrs); | |
1345 | } else if (sess->back_channel.nr_rdma_attrs > 1) { | |
1346 | dprintk("Too many back channel attr bitmaps!\n"); | |
1347 | goto xdr_error; | |
1348 | } | |
1349 | ||
acb2887e | 1350 | READ_BUF(4); |
ec6b5d7b | 1351 | READ32(sess->callback_prog); |
acb2887e | 1352 | nfsd4_decode_cb_sec(argp, &sess->cb_sec); |
ec6b5d7b | 1353 | DECODE_TAIL; |
2db134eb AA |
1354 | } |
1355 | ||
1356 | static __be32 | |
1357 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, | |
1358 | struct nfsd4_destroy_session *destroy_session) | |
1359 | { | |
e10e0cfc BH |
1360 | DECODE_HEAD; |
1361 | READ_BUF(NFS4_MAX_SESSIONID_LEN); | |
1362 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1363 | ||
1364 | DECODE_TAIL; | |
2db134eb AA |
1365 | } |
1366 | ||
e1ca12df BS |
1367 | static __be32 |
1368 | nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp, | |
1369 | struct nfsd4_free_stateid *free_stateid) | |
1370 | { | |
1371 | DECODE_HEAD; | |
1372 | ||
1373 | READ_BUF(sizeof(stateid_t)); | |
1374 | READ32(free_stateid->fr_stateid.si_generation); | |
1375 | COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
1376 | ||
1377 | DECODE_TAIL; | |
1378 | } | |
1379 | ||
2db134eb AA |
1380 | static __be32 |
1381 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, | |
1382 | struct nfsd4_sequence *seq) | |
1383 | { | |
b85d4c01 BH |
1384 | DECODE_HEAD; |
1385 | ||
1386 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); | |
1387 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1388 | READ32(seq->seqid); | |
1389 | READ32(seq->slotid); | |
1390 | READ32(seq->maxslots); | |
1391 | READ32(seq->cachethis); | |
1392 | ||
1393 | DECODE_TAIL; | |
2db134eb AA |
1394 | } |
1395 | ||
17456804 BS |
1396 | static __be32 |
1397 | nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid) | |
1398 | { | |
17456804 | 1399 | int i; |
03cfb420 BS |
1400 | __be32 *p, status; |
1401 | struct nfsd4_test_stateid_id *stateid; | |
17456804 BS |
1402 | |
1403 | READ_BUF(4); | |
1404 | test_stateid->ts_num_ids = ntohl(*p++); | |
1405 | ||
03cfb420 | 1406 | INIT_LIST_HEAD(&test_stateid->ts_stateid_list); |
17456804 BS |
1407 | |
1408 | for (i = 0; i < test_stateid->ts_num_ids; i++) { | |
03cfb420 BS |
1409 | stateid = kmalloc(sizeof(struct nfsd4_test_stateid_id), GFP_KERNEL); |
1410 | if (!stateid) { | |
afcf6792 | 1411 | status = nfserrno(-ENOMEM); |
03cfb420 BS |
1412 | goto out; |
1413 | } | |
1414 | ||
1415 | defer_free(argp, kfree, stateid); | |
1416 | INIT_LIST_HEAD(&stateid->ts_id_list); | |
1417 | list_add_tail(&stateid->ts_id_list, &test_stateid->ts_stateid_list); | |
1418 | ||
1419 | status = nfsd4_decode_stateid(argp, &stateid->ts_id_stateid); | |
17456804 | 1420 | if (status) |
03cfb420 | 1421 | goto out; |
17456804 BS |
1422 | } |
1423 | ||
1424 | status = 0; | |
1425 | out: | |
1426 | return status; | |
1427 | xdr_error: | |
1428 | dprintk("NFSD: xdr error (%s:%d)\n", __FILE__, __LINE__); | |
1429 | status = nfserr_bad_xdr; | |
1430 | goto out; | |
1431 | } | |
1432 | ||
345c2842 MJ |
1433 | static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_clientid *dc) |
1434 | { | |
1435 | DECODE_HEAD; | |
1436 | ||
1437 | READ_BUF(8); | |
1438 | COPYMEM(&dc->clientid, 8); | |
1439 | ||
1440 | DECODE_TAIL; | |
1441 | } | |
1442 | ||
4dc6ec00 BF |
1443 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) |
1444 | { | |
1445 | DECODE_HEAD; | |
1446 | ||
1447 | READ_BUF(4); | |
1448 | READ32(rc->rca_one_fs); | |
1449 | ||
1450 | DECODE_TAIL; | |
1451 | } | |
1452 | ||
347e0ad9 BH |
1453 | static __be32 |
1454 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1455 | { | |
1456 | return nfs_ok; | |
1457 | } | |
1458 | ||
3c375c6f BH |
1459 | static __be32 |
1460 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1461 | { | |
1e685ec2 | 1462 | return nfserr_notsupp; |
3c375c6f BH |
1463 | } |
1464 | ||
347e0ad9 BH |
1465 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1466 | ||
1467 | static nfsd4_dec nfsd4_dec_ops[] = { | |
ad1060c8 BF |
1468 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1469 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1470 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1471 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1472 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1473 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1474 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1475 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1476 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1477 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1478 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1479 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1480 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1481 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1482 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1483 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1484 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1485 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1486 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1487 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
a1c8c4d1 | 1488 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_noop, |
ad1060c8 BF |
1489 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1490 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1491 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1492 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1493 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1494 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1495 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1496 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1497 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1498 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1499 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1500 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1501 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1502 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1503 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1504 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
347e0ad9 BH |
1505 | }; |
1506 | ||
2db134eb | 1507 | static nfsd4_dec nfsd41_dec_ops[] = { |
9064caae RD |
1508 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1509 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1510 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1511 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1512 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1513 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1514 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1515 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1516 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1517 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1518 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1519 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1520 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1521 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1522 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1523 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1524 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1525 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1526 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1527 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
1528 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1529 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1530 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1531 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1532 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1533 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1534 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1535 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1536 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1537 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1538 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1539 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1540 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1541 | [OP_SETCLIENTID_CONFIRM]= (nfsd4_dec)nfsd4_decode_notsupp, | |
1542 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1543 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1544 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_notsupp, | |
2db134eb AA |
1545 | |
1546 | /* new operations for NFSv4.1 */ | |
cb73a9f4 | 1547 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_backchannel_ctl, |
1d1bc8f2 | 1548 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
9064caae RD |
1549 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
1550 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
1551 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
e1ca12df | 1552 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, |
9064caae RD |
1553 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
1554 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1555 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1556 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1557 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1558 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
04f4ad16 | 1559 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
9064caae RD |
1560 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
1561 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
17456804 | 1562 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid, |
9064caae | 1563 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
345c2842 | 1564 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, |
4dc6ec00 | 1565 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
2db134eb AA |
1566 | }; |
1567 | ||
f2feb96b BH |
1568 | struct nfsd4_minorversion_ops { |
1569 | nfsd4_dec *decoders; | |
1570 | int nops; | |
1571 | }; | |
1572 | ||
1573 | static struct nfsd4_minorversion_ops nfsd4_minorversion[] = { | |
ad1060c8 | 1574 | [0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) }, |
2db134eb | 1575 | [1] = { nfsd41_dec_ops, ARRAY_SIZE(nfsd41_dec_ops) }, |
f2feb96b BH |
1576 | }; |
1577 | ||
b37ad28b | 1578 | static __be32 |
1da177e4 LT |
1579 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1580 | { | |
1581 | DECODE_HEAD; | |
1582 | struct nfsd4_op *op; | |
f2feb96b | 1583 | struct nfsd4_minorversion_ops *ops; |
1091006c | 1584 | bool cachethis = false; |
1da177e4 LT |
1585 | int i; |
1586 | ||
1da177e4 LT |
1587 | READ_BUF(4); |
1588 | READ32(argp->taglen); | |
1589 | READ_BUF(argp->taglen + 8); | |
1590 | SAVEMEM(argp->tag, argp->taglen); | |
1591 | READ32(argp->minorversion); | |
1592 | READ32(argp->opcnt); | |
1593 | ||
1594 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1595 | goto xdr_error; | |
1596 | if (argp->opcnt > 100) | |
1597 | goto xdr_error; | |
1598 | ||
e8c96f8c | 1599 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
1da177e4 LT |
1600 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1601 | if (!argp->ops) { | |
1602 | argp->ops = argp->iops; | |
817cb9d4 | 1603 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1604 | goto xdr_error; |
1605 | } | |
1606 | } | |
1607 | ||
f2feb96b | 1608 | if (argp->minorversion >= ARRAY_SIZE(nfsd4_minorversion)) |
30cff1ff BH |
1609 | argp->opcnt = 0; |
1610 | ||
f2feb96b | 1611 | ops = &nfsd4_minorversion[argp->minorversion]; |
1da177e4 LT |
1612 | for (i = 0; i < argp->opcnt; i++) { |
1613 | op = &argp->ops[i]; | |
1614 | op->replay = NULL; | |
1615 | ||
8a61b18c BF |
1616 | READ_BUF(4); |
1617 | READ32(op->opnum); | |
1da177e4 | 1618 | |
de3cab79 | 1619 | if (op->opnum >= FIRST_NFS4_OP && op->opnum <= LAST_NFS4_OP) |
f2feb96b | 1620 | op->status = ops->decoders[op->opnum](argp, &op->u); |
347e0ad9 | 1621 | else { |
1da177e4 LT |
1622 | op->opnum = OP_ILLEGAL; |
1623 | op->status = nfserr_op_illegal; | |
1da177e4 LT |
1624 | } |
1625 | ||
1626 | if (op->status) { | |
1627 | argp->opcnt = i+1; | |
1628 | break; | |
1629 | } | |
1091006c BF |
1630 | /* |
1631 | * We'll try to cache the result in the DRC if any one | |
1632 | * op in the compound wants to be cached: | |
1633 | */ | |
1634 | cachethis |= nfsd4_cache_this_op(op); | |
1da177e4 | 1635 | } |
1091006c BF |
1636 | /* Sessions make the DRC unnecessary: */ |
1637 | if (argp->minorversion) | |
1638 | cachethis = false; | |
1639 | argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; | |
1da177e4 LT |
1640 | |
1641 | DECODE_TAIL; | |
1642 | } | |
1da177e4 | 1643 | |
1da177e4 LT |
1644 | #define WRITE32(n) *p++ = htonl(n) |
1645 | #define WRITE64(n) do { \ | |
1646 | *p++ = htonl((u32)((n) >> 32)); \ | |
1647 | *p++ = htonl((u32)(n)); \ | |
1648 | } while (0) | |
5108b276 | 1649 | #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \ |
1da177e4 LT |
1650 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ |
1651 | memcpy(p, ptr, nbytes); \ | |
1652 | p += XDR_QUADLEN(nbytes); \ | |
5108b276 | 1653 | }} while (0) |
c654b8a9 BF |
1654 | |
1655 | static void write32(__be32 **p, u32 n) | |
1656 | { | |
45eaa1c1 | 1657 | *(*p)++ = htonl(n); |
c654b8a9 BF |
1658 | } |
1659 | ||
1660 | static void write64(__be32 **p, u64 n) | |
1661 | { | |
45eaa1c1 | 1662 | write32(p, (n >> 32)); |
c654b8a9 BF |
1663 | write32(p, (u32)n); |
1664 | } | |
1665 | ||
1666 | static void write_change(__be32 **p, struct kstat *stat, struct inode *inode) | |
1667 | { | |
1668 | if (IS_I_VERSION(inode)) { | |
1669 | write64(p, inode->i_version); | |
1670 | } else { | |
1671 | write32(p, stat->ctime.tv_sec); | |
1672 | write32(p, stat->ctime.tv_nsec); | |
1673 | } | |
1674 | } | |
1675 | ||
1676 | static void write_cinfo(__be32 **p, struct nfsd4_change_info *c) | |
1677 | { | |
1678 | write32(p, c->atomic); | |
1679 | if (c->change_supported) { | |
1680 | write64(p, c->before_change); | |
1681 | write64(p, c->after_change); | |
1682 | } else { | |
1683 | write32(p, c->before_ctime_sec); | |
1684 | write32(p, c->before_ctime_nsec); | |
1685 | write32(p, c->after_ctime_sec); | |
1686 | write32(p, c->after_ctime_nsec); | |
1687 | } | |
1688 | } | |
1da177e4 LT |
1689 | |
1690 | #define RESERVE_SPACE(nbytes) do { \ | |
1691 | p = resp->p; \ | |
1692 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ | |
1693 | } while (0) | |
1694 | #define ADJUST_ARGS() resp->p = p | |
1695 | ||
1696 | /* | |
1697 | * Header routine to setup seqid operation replay cache | |
1698 | */ | |
1699 | #define ENCODE_SEQID_OP_HEAD \ | |
2ebbc012 | 1700 | __be32 *save; \ |
1da177e4 LT |
1701 | \ |
1702 | save = resp->p; | |
1703 | ||
1704 | /* | |
7fb64cee N |
1705 | * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This |
1706 | * is where sequence id's are incremented, and the replay cache is filled. | |
1707 | * Note that we increment sequence id's here, at the last moment, so we're sure | |
1708 | * we know whether the error to be returned is a sequence id mutating error. | |
1da177e4 LT |
1709 | */ |
1710 | ||
f3e42237 BF |
1711 | static void encode_seqid_op_tail(struct nfsd4_compoundres *resp, __be32 *save, __be32 nfserr) |
1712 | { | |
1713 | struct nfs4_stateowner *stateowner = resp->cstate.replay_owner; | |
1714 | ||
1715 | if (seqid_mutating_err(ntohl(nfserr)) && stateowner) { | |
1716 | stateowner->so_seqid++; | |
1717 | stateowner->so_replay.rp_status = nfserr; | |
1718 | stateowner->so_replay.rp_buflen = | |
1719 | (char *)resp->p - (char *)save; | |
1720 | memcpy(stateowner->so_replay.rp_buf, save, | |
1721 | stateowner->so_replay.rp_buflen); | |
38c387b5 | 1722 | nfsd4_purge_closed_stateid(stateowner); |
f3e42237 BF |
1723 | } |
1724 | } | |
1da177e4 | 1725 | |
81c3f413 | 1726 | /* Encode as an array of strings the string given with components |
e7a0444a | 1727 | * separated @sep, escaped with esc_enter and esc_exit. |
81c3f413 | 1728 | */ |
e7a0444a WAA |
1729 | static __be32 nfsd4_encode_components_esc(char sep, char *components, |
1730 | __be32 **pp, int *buflen, | |
1731 | char esc_enter, char esc_exit) | |
81c3f413 | 1732 | { |
2ebbc012 AV |
1733 | __be32 *p = *pp; |
1734 | __be32 *countp = p; | |
81c3f413 | 1735 | int strlen, count=0; |
e7a0444a | 1736 | char *str, *end, *next; |
81c3f413 BF |
1737 | |
1738 | dprintk("nfsd4_encode_components(%s)\n", components); | |
1739 | if ((*buflen -= 4) < 0) | |
1740 | return nfserr_resource; | |
1741 | WRITE32(0); /* We will fill this in with @count later */ | |
1742 | end = str = components; | |
1743 | while (*end) { | |
e7a0444a WAA |
1744 | bool found_esc = false; |
1745 | ||
1746 | /* try to parse as esc_start, ..., esc_end, sep */ | |
1747 | if (*str == esc_enter) { | |
1748 | for (; *end && (*end != esc_exit); end++) | |
1749 | /* find esc_exit or end of string */; | |
1750 | next = end + 1; | |
1751 | if (*end && (!*next || *next == sep)) { | |
1752 | str++; | |
1753 | found_esc = true; | |
1754 | } | |
1755 | } | |
1756 | ||
1757 | if (!found_esc) | |
1758 | for (; *end && (*end != sep); end++) | |
1759 | /* find sep or end of string */; | |
1760 | ||
81c3f413 BF |
1761 | strlen = end - str; |
1762 | if (strlen) { | |
1763 | if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0) | |
1764 | return nfserr_resource; | |
1765 | WRITE32(strlen); | |
1766 | WRITEMEM(str, strlen); | |
1767 | count++; | |
1768 | } | |
1769 | else | |
1770 | end++; | |
1771 | str = end; | |
1772 | } | |
1773 | *pp = p; | |
1774 | p = countp; | |
1775 | WRITE32(count); | |
1776 | return 0; | |
1777 | } | |
1778 | ||
e7a0444a WAA |
1779 | /* Encode as an array of strings the string given with components |
1780 | * separated @sep. | |
1781 | */ | |
1782 | static __be32 nfsd4_encode_components(char sep, char *components, | |
1783 | __be32 **pp, int *buflen) | |
1784 | { | |
1785 | return nfsd4_encode_components_esc(sep, components, pp, buflen, 0, 0); | |
1786 | } | |
1787 | ||
81c3f413 BF |
1788 | /* |
1789 | * encode a location element of a fs_locations structure | |
1790 | */ | |
b37ad28b | 1791 | static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location, |
2ebbc012 | 1792 | __be32 **pp, int *buflen) |
81c3f413 | 1793 | { |
b37ad28b | 1794 | __be32 status; |
2ebbc012 | 1795 | __be32 *p = *pp; |
81c3f413 | 1796 | |
e7a0444a WAA |
1797 | status = nfsd4_encode_components_esc(':', location->hosts, &p, buflen, |
1798 | '[', ']'); | |
81c3f413 BF |
1799 | if (status) |
1800 | return status; | |
1801 | status = nfsd4_encode_components('/', location->path, &p, buflen); | |
1802 | if (status) | |
1803 | return status; | |
1804 | *pp = p; | |
1805 | return 0; | |
1806 | } | |
1807 | ||
1808 | /* | |
ed748aac | 1809 | * Encode a path in RFC3530 'pathname4' format |
81c3f413 | 1810 | */ |
ed748aac TM |
1811 | static __be32 nfsd4_encode_path(const struct path *root, |
1812 | const struct path *path, __be32 **pp, int *buflen) | |
81c3f413 | 1813 | { |
ed748aac TM |
1814 | struct path cur = { |
1815 | .mnt = path->mnt, | |
1816 | .dentry = path->dentry, | |
1817 | }; | |
1818 | __be32 *p = *pp; | |
1819 | struct dentry **components = NULL; | |
1820 | unsigned int ncomponents = 0; | |
1821 | __be32 err = nfserr_jukebox; | |
81c3f413 | 1822 | |
ed748aac | 1823 | dprintk("nfsd4_encode_components("); |
81c3f413 | 1824 | |
ed748aac TM |
1825 | path_get(&cur); |
1826 | /* First walk the path up to the nfsd root, and store the | |
1827 | * dentries/path components in an array. | |
1828 | */ | |
1829 | for (;;) { | |
1830 | if (cur.dentry == root->dentry && cur.mnt == root->mnt) | |
1831 | break; | |
1832 | if (cur.dentry == cur.mnt->mnt_root) { | |
1833 | if (follow_up(&cur)) | |
1834 | continue; | |
1835 | goto out_free; | |
1836 | } | |
1837 | if ((ncomponents & 15) == 0) { | |
1838 | struct dentry **new; | |
1839 | new = krealloc(components, | |
1840 | sizeof(*new) * (ncomponents + 16), | |
1841 | GFP_KERNEL); | |
1842 | if (!new) | |
1843 | goto out_free; | |
1844 | components = new; | |
1845 | } | |
1846 | components[ncomponents++] = cur.dentry; | |
1847 | cur.dentry = dget_parent(cur.dentry); | |
1848 | } | |
81c3f413 | 1849 | |
ed748aac TM |
1850 | *buflen -= 4; |
1851 | if (*buflen < 0) | |
1852 | goto out_free; | |
1853 | WRITE32(ncomponents); | |
1854 | ||
1855 | while (ncomponents) { | |
1856 | struct dentry *dentry = components[ncomponents - 1]; | |
1857 | unsigned int len = dentry->d_name.len; | |
1858 | ||
1859 | *buflen -= 4 + (XDR_QUADLEN(len) << 2); | |
1860 | if (*buflen < 0) | |
1861 | goto out_free; | |
1862 | WRITE32(len); | |
1863 | WRITEMEM(dentry->d_name.name, len); | |
1864 | dprintk("/%s", dentry->d_name.name); | |
1865 | dput(dentry); | |
1866 | ncomponents--; | |
81c3f413 | 1867 | } |
ed748aac TM |
1868 | |
1869 | *pp = p; | |
1870 | err = 0; | |
1871 | out_free: | |
1872 | dprintk(")\n"); | |
1873 | while (ncomponents) | |
1874 | dput(components[--ncomponents]); | |
1875 | kfree(components); | |
1876 | path_put(&cur); | |
1877 | return err; | |
1878 | } | |
1879 | ||
1880 | static __be32 nfsd4_encode_fsloc_fsroot(struct svc_rqst *rqstp, | |
1881 | const struct path *path, __be32 **pp, int *buflen) | |
1882 | { | |
1883 | struct svc_export *exp_ps; | |
1884 | __be32 res; | |
1885 | ||
1886 | exp_ps = rqst_find_fsidzero_export(rqstp); | |
1887 | if (IS_ERR(exp_ps)) | |
1888 | return nfserrno(PTR_ERR(exp_ps)); | |
1889 | res = nfsd4_encode_path(&exp_ps->ex_path, path, pp, buflen); | |
1890 | exp_put(exp_ps); | |
1891 | return res; | |
81c3f413 BF |
1892 | } |
1893 | ||
1894 | /* | |
1895 | * encode a fs_locations structure | |
1896 | */ | |
b37ad28b | 1897 | static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp, |
81c3f413 | 1898 | struct svc_export *exp, |
2ebbc012 | 1899 | __be32 **pp, int *buflen) |
81c3f413 | 1900 | { |
b37ad28b | 1901 | __be32 status; |
cc45f017 | 1902 | int i; |
2ebbc012 | 1903 | __be32 *p = *pp; |
81c3f413 | 1904 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
81c3f413 | 1905 | |
ed748aac | 1906 | status = nfsd4_encode_fsloc_fsroot(rqstp, &exp->ex_path, &p, buflen); |
81c3f413 BF |
1907 | if (status) |
1908 | return status; | |
1909 | if ((*buflen -= 4) < 0) | |
1910 | return nfserr_resource; | |
1911 | WRITE32(fslocs->locations_count); | |
1912 | for (i=0; i<fslocs->locations_count; i++) { | |
1913 | status = nfsd4_encode_fs_location4(&fslocs->locations[i], | |
1914 | &p, buflen); | |
1915 | if (status) | |
1916 | return status; | |
1917 | } | |
1918 | *pp = p; | |
1919 | return 0; | |
1920 | } | |
1da177e4 | 1921 | |
3d2544b1 BF |
1922 | static u32 nfs4_file_type(umode_t mode) |
1923 | { | |
1924 | switch (mode & S_IFMT) { | |
1925 | case S_IFIFO: return NF4FIFO; | |
1926 | case S_IFCHR: return NF4CHR; | |
1927 | case S_IFDIR: return NF4DIR; | |
1928 | case S_IFBLK: return NF4BLK; | |
1929 | case S_IFLNK: return NF4LNK; | |
1930 | case S_IFREG: return NF4REG; | |
1931 | case S_IFSOCK: return NF4SOCK; | |
1932 | default: return NF4BAD; | |
1933 | }; | |
1934 | } | |
1da177e4 | 1935 | |
b37ad28b | 1936 | static __be32 |
ab8e4aee | 1937 | nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, kuid_t uid, kgid_t gid, |
2ebbc012 | 1938 | __be32 **p, int *buflen) |
1da177e4 LT |
1939 | { |
1940 | int status; | |
1941 | ||
1942 | if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) | |
1943 | return nfserr_resource; | |
1944 | if (whotype != NFS4_ACL_WHO_NAMED) | |
1945 | status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); | |
ab8e4aee EB |
1946 | else if (gid_valid(gid)) |
1947 | status = nfsd_map_gid_to_name(rqstp, gid, (u8 *)(*p + 1)); | |
1da177e4 | 1948 | else |
ab8e4aee | 1949 | status = nfsd_map_uid_to_name(rqstp, uid, (u8 *)(*p + 1)); |
1da177e4 LT |
1950 | if (status < 0) |
1951 | return nfserrno(status); | |
1952 | *p = xdr_encode_opaque(*p, NULL, status); | |
1953 | *buflen -= (XDR_QUADLEN(status) << 2) + 4; | |
1954 | BUG_ON(*buflen < 0); | |
1955 | return 0; | |
1956 | } | |
1957 | ||
b37ad28b | 1958 | static inline __be32 |
ab8e4aee | 1959 | nfsd4_encode_user(struct svc_rqst *rqstp, kuid_t user, __be32 **p, int *buflen) |
1da177e4 | 1960 | { |
ab8e4aee EB |
1961 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, user, INVALID_GID, |
1962 | p, buflen); | |
1da177e4 LT |
1963 | } |
1964 | ||
b37ad28b | 1965 | static inline __be32 |
ab8e4aee | 1966 | nfsd4_encode_group(struct svc_rqst *rqstp, kgid_t group, __be32 **p, int *buflen) |
1da177e4 | 1967 | { |
ab8e4aee EB |
1968 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, INVALID_UID, group, |
1969 | p, buflen); | |
1da177e4 LT |
1970 | } |
1971 | ||
b37ad28b | 1972 | static inline __be32 |
ab8e4aee | 1973 | nfsd4_encode_aclname(struct svc_rqst *rqstp, struct nfs4_ace *ace, |
2ebbc012 | 1974 | __be32 **p, int *buflen) |
1da177e4 | 1975 | { |
ab8e4aee EB |
1976 | kuid_t uid = INVALID_UID; |
1977 | kgid_t gid = INVALID_GID; | |
1978 | ||
1979 | if (ace->whotype == NFS4_ACL_WHO_NAMED) { | |
1980 | if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) | |
1981 | gid = ace->who_gid; | |
1982 | else | |
1983 | uid = ace->who_uid; | |
1984 | } | |
1985 | return nfsd4_encode_name(rqstp, ace->whotype, uid, gid, p, buflen); | |
1da177e4 LT |
1986 | } |
1987 | ||
42ca0993 BF |
1988 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
1989 | FATTR4_WORD0_RDATTR_ERROR) | |
1990 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
1991 | ||
b37ad28b | 1992 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
42ca0993 BF |
1993 | { |
1994 | /* As per referral draft: */ | |
1995 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
1996 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
1997 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
1998 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
1999 | *rdattr_err = NFSERR_MOVED; | |
2000 | else | |
2001 | return nfserr_moved; | |
2002 | } | |
2003 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
2004 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
2005 | return 0; | |
2006 | } | |
1da177e4 | 2007 | |
ae7095a7 BF |
2008 | |
2009 | static int get_parent_attributes(struct svc_export *exp, struct kstat *stat) | |
2010 | { | |
2011 | struct path path = exp->ex_path; | |
2012 | int err; | |
2013 | ||
2014 | path_get(&path); | |
2015 | while (follow_up(&path)) { | |
2016 | if (path.dentry != path.mnt->mnt_root) | |
2017 | break; | |
2018 | } | |
3dadecce | 2019 | err = vfs_getattr(&path, stat); |
ae7095a7 BF |
2020 | path_put(&path); |
2021 | return err; | |
2022 | } | |
2023 | ||
1da177e4 LT |
2024 | /* |
2025 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
2026 | * ourselves. | |
2027 | * | |
84822d0b | 2028 | * countp is the buffer size in _words_ |
1da177e4 | 2029 | */ |
b37ad28b | 2030 | __be32 |
1da177e4 | 2031 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, |
84822d0b | 2032 | struct dentry *dentry, __be32 **buffer, int count, u32 *bmval, |
406a7ea9 | 2033 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
2034 | { |
2035 | u32 bmval0 = bmval[0]; | |
2036 | u32 bmval1 = bmval[1]; | |
7e705706 | 2037 | u32 bmval2 = bmval[2]; |
1da177e4 LT |
2038 | struct kstat stat; |
2039 | struct svc_fh tempfh; | |
2040 | struct kstatfs statfs; | |
84822d0b | 2041 | int buflen = count << 2; |
2ebbc012 | 2042 | __be32 *attrlenp; |
1da177e4 LT |
2043 | u32 dummy; |
2044 | u64 dummy64; | |
42ca0993 | 2045 | u32 rdattr_err = 0; |
84822d0b | 2046 | __be32 *p = *buffer; |
b37ad28b | 2047 | __be32 status; |
b8dd7b9a | 2048 | int err; |
1da177e4 LT |
2049 | int aclsupport = 0; |
2050 | struct nfs4_acl *acl = NULL; | |
7e705706 AA |
2051 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
2052 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
2053 | struct path path = { |
2054 | .mnt = exp->ex_path.mnt, | |
2055 | .dentry = dentry, | |
2056 | }; | |
3d733711 | 2057 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
1da177e4 LT |
2058 | |
2059 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
7e705706 AA |
2060 | BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); |
2061 | BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); | |
2062 | BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); | |
1da177e4 | 2063 | |
42ca0993 | 2064 | if (exp->ex_fslocs.migrated) { |
7e705706 | 2065 | BUG_ON(bmval[2]); |
42ca0993 BF |
2066 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); |
2067 | if (status) | |
2068 | goto out; | |
2069 | } | |
2070 | ||
3dadecce | 2071 | err = vfs_getattr(&path, &stat); |
b8dd7b9a | 2072 | if (err) |
1da177e4 | 2073 | goto out_nfserr; |
a16e92ed BF |
2074 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | |
2075 | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
2076 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
2077 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 2078 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 2079 | if (err) |
1da177e4 LT |
2080 | goto out_nfserr; |
2081 | } | |
2082 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
2083 | fh_init(&tempfh, NFS4_FHSIZE); | |
2084 | status = fh_compose(&tempfh, exp, dentry, NULL); | |
2085 | if (status) | |
2086 | goto out; | |
2087 | fhp = &tempfh; | |
2088 | } | |
2089 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
2090 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
b8dd7b9a AV |
2091 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
2092 | aclsupport = (err == 0); | |
1da177e4 | 2093 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 2094 | if (err == -EOPNOTSUPP) |
1da177e4 | 2095 | bmval0 &= ~FATTR4_WORD0_ACL; |
b8dd7b9a | 2096 | else if (err == -EINVAL) { |
1da177e4 LT |
2097 | status = nfserr_attrnotsupp; |
2098 | goto out; | |
b8dd7b9a | 2099 | } else if (err != 0) |
1da177e4 LT |
2100 | goto out_nfserr; |
2101 | } | |
2102 | } | |
1da177e4 | 2103 | |
2b44f1ba BH |
2104 | if (bmval2) { |
2105 | if ((buflen -= 16) < 0) | |
2106 | goto out_resource; | |
7e705706 AA |
2107 | WRITE32(3); |
2108 | WRITE32(bmval0); | |
2109 | WRITE32(bmval1); | |
2110 | WRITE32(bmval2); | |
2b44f1ba BH |
2111 | } else if (bmval1) { |
2112 | if ((buflen -= 12) < 0) | |
2113 | goto out_resource; | |
7e705706 AA |
2114 | WRITE32(2); |
2115 | WRITE32(bmval0); | |
2116 | WRITE32(bmval1); | |
2117 | } else { | |
2b44f1ba BH |
2118 | if ((buflen -= 8) < 0) |
2119 | goto out_resource; | |
7e705706 AA |
2120 | WRITE32(1); |
2121 | WRITE32(bmval0); | |
2122 | } | |
1da177e4 LT |
2123 | attrlenp = p++; /* to be backfilled later */ |
2124 | ||
2125 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
7e705706 AA |
2126 | u32 word0 = nfsd_suppattrs0(minorversion); |
2127 | u32 word1 = nfsd_suppattrs1(minorversion); | |
2128 | u32 word2 = nfsd_suppattrs2(minorversion); | |
2129 | ||
42ca0993 BF |
2130 | if (!aclsupport) |
2131 | word0 &= ~FATTR4_WORD0_ACL; | |
7e705706 | 2132 | if (!word2) { |
2b44f1ba BH |
2133 | if ((buflen -= 12) < 0) |
2134 | goto out_resource; | |
7e705706 AA |
2135 | WRITE32(2); |
2136 | WRITE32(word0); | |
2137 | WRITE32(word1); | |
2138 | } else { | |
2b44f1ba BH |
2139 | if ((buflen -= 16) < 0) |
2140 | goto out_resource; | |
7e705706 AA |
2141 | WRITE32(3); |
2142 | WRITE32(word0); | |
2143 | WRITE32(word1); | |
2144 | WRITE32(word2); | |
2145 | } | |
1da177e4 LT |
2146 | } |
2147 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
2148 | if ((buflen -= 4) < 0) | |
2149 | goto out_resource; | |
3d2544b1 | 2150 | dummy = nfs4_file_type(stat.mode); |
1da177e4 LT |
2151 | if (dummy == NF4BAD) |
2152 | goto out_serverfault; | |
2153 | WRITE32(dummy); | |
2154 | } | |
2155 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
2156 | if ((buflen -= 4) < 0) | |
2157 | goto out_resource; | |
49640001 | 2158 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
e34ac862 | 2159 | WRITE32(NFS4_FH_PERSISTENT); |
49640001 | 2160 | else |
e34ac862 | 2161 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
1da177e4 LT |
2162 | } |
2163 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
1da177e4 LT |
2164 | if ((buflen -= 8) < 0) |
2165 | goto out_resource; | |
c654b8a9 | 2166 | write_change(&p, &stat, dentry->d_inode); |
1da177e4 LT |
2167 | } |
2168 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
2169 | if ((buflen -= 8) < 0) | |
2170 | goto out_resource; | |
2171 | WRITE64(stat.size); | |
2172 | } | |
2173 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
2174 | if ((buflen -= 4) < 0) | |
2175 | goto out_resource; | |
2176 | WRITE32(1); | |
2177 | } | |
2178 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
2179 | if ((buflen -= 4) < 0) | |
2180 | goto out_resource; | |
2181 | WRITE32(1); | |
2182 | } | |
2183 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
2184 | if ((buflen -= 4) < 0) | |
2185 | goto out_resource; | |
2186 | WRITE32(0); | |
2187 | } | |
2188 | if (bmval0 & FATTR4_WORD0_FSID) { | |
2189 | if ((buflen -= 16) < 0) | |
2190 | goto out_resource; | |
42ca0993 BF |
2191 | if (exp->ex_fslocs.migrated) { |
2192 | WRITE64(NFS4_REFERRAL_FSID_MAJOR); | |
2193 | WRITE64(NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
2194 | } else switch(fsid_source(fhp)) { |
2195 | case FSIDSOURCE_FSID: | |
1da177e4 LT |
2196 | WRITE64((u64)exp->ex_fsid); |
2197 | WRITE64((u64)0); | |
af6a4e28 N |
2198 | break; |
2199 | case FSIDSOURCE_DEV: | |
1da177e4 LT |
2200 | WRITE32(0); |
2201 | WRITE32(MAJOR(stat.dev)); | |
2202 | WRITE32(0); | |
2203 | WRITE32(MINOR(stat.dev)); | |
af6a4e28 N |
2204 | break; |
2205 | case FSIDSOURCE_UUID: | |
2206 | WRITEMEM(exp->ex_uuid, 16); | |
2207 | break; | |
1da177e4 LT |
2208 | } |
2209 | } | |
2210 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
2211 | if ((buflen -= 4) < 0) | |
2212 | goto out_resource; | |
2213 | WRITE32(0); | |
2214 | } | |
2215 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
2216 | if ((buflen -= 4) < 0) | |
2217 | goto out_resource; | |
3d733711 | 2218 | WRITE32(nn->nfsd4_lease); |
1da177e4 LT |
2219 | } |
2220 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
2221 | if ((buflen -= 4) < 0) | |
2222 | goto out_resource; | |
42ca0993 | 2223 | WRITE32(rdattr_err); |
1da177e4 LT |
2224 | } |
2225 | if (bmval0 & FATTR4_WORD0_ACL) { | |
2226 | struct nfs4_ace *ace; | |
1da177e4 LT |
2227 | |
2228 | if (acl == NULL) { | |
2229 | if ((buflen -= 4) < 0) | |
2230 | goto out_resource; | |
2231 | ||
2232 | WRITE32(0); | |
2233 | goto out_acl; | |
2234 | } | |
2235 | if ((buflen -= 4) < 0) | |
2236 | goto out_resource; | |
2237 | WRITE32(acl->naces); | |
2238 | ||
28e05dd8 | 2239 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
1da177e4 LT |
2240 | if ((buflen -= 4*3) < 0) |
2241 | goto out_resource; | |
2242 | WRITE32(ace->type); | |
2243 | WRITE32(ace->flag); | |
2244 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); | |
ab8e4aee | 2245 | status = nfsd4_encode_aclname(rqstp, ace, &p, &buflen); |
1da177e4 LT |
2246 | if (status == nfserr_resource) |
2247 | goto out_resource; | |
2248 | if (status) | |
2249 | goto out; | |
2250 | } | |
2251 | } | |
2252 | out_acl: | |
2253 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
2254 | if ((buflen -= 4) < 0) | |
2255 | goto out_resource; | |
2256 | WRITE32(aclsupport ? | |
2257 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); | |
2258 | } | |
2259 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
2260 | if ((buflen -= 4) < 0) | |
2261 | goto out_resource; | |
2262 | WRITE32(1); | |
2263 | } | |
2264 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
2265 | if ((buflen -= 4) < 0) | |
2266 | goto out_resource; | |
2930d381 | 2267 | WRITE32(0); |
1da177e4 LT |
2268 | } |
2269 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
2270 | if ((buflen -= 4) < 0) | |
2271 | goto out_resource; | |
2272 | WRITE32(1); | |
2273 | } | |
2274 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
2275 | if ((buflen -= 4) < 0) | |
2276 | goto out_resource; | |
2277 | WRITE32(1); | |
2278 | } | |
2279 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
2280 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; | |
2281 | if (buflen < 0) | |
2282 | goto out_resource; | |
2283 | WRITE32(fhp->fh_handle.fh_size); | |
2284 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); | |
2285 | } | |
2286 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
2287 | if ((buflen -= 8) < 0) | |
2288 | goto out_resource; | |
40ee5dc6 | 2289 | WRITE64(stat.ino); |
1da177e4 LT |
2290 | } |
2291 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
2292 | if ((buflen -= 8) < 0) | |
2293 | goto out_resource; | |
2294 | WRITE64((u64) statfs.f_ffree); | |
2295 | } | |
2296 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
2297 | if ((buflen -= 8) < 0) | |
2298 | goto out_resource; | |
2299 | WRITE64((u64) statfs.f_ffree); | |
2300 | } | |
2301 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
2302 | if ((buflen -= 8) < 0) | |
2303 | goto out_resource; | |
2304 | WRITE64((u64) statfs.f_files); | |
2305 | } | |
81c3f413 BF |
2306 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
2307 | status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); | |
2308 | if (status == nfserr_resource) | |
2309 | goto out_resource; | |
2310 | if (status) | |
2311 | goto out; | |
2312 | } | |
1da177e4 LT |
2313 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
2314 | if ((buflen -= 4) < 0) | |
2315 | goto out_resource; | |
2316 | WRITE32(1); | |
2317 | } | |
2318 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
2319 | if ((buflen -= 8) < 0) | |
2320 | goto out_resource; | |
2321 | WRITE64(~(u64)0); | |
2322 | } | |
2323 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
2324 | if ((buflen -= 4) < 0) | |
2325 | goto out_resource; | |
2326 | WRITE32(255); | |
2327 | } | |
2328 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
2329 | if ((buflen -= 4) < 0) | |
2330 | goto out_resource; | |
a16e92ed | 2331 | WRITE32(statfs.f_namelen); |
1da177e4 LT |
2332 | } |
2333 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
2334 | if ((buflen -= 8) < 0) | |
2335 | goto out_resource; | |
7adae489 | 2336 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2337 | } |
2338 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
2339 | if ((buflen -= 8) < 0) | |
2340 | goto out_resource; | |
7adae489 | 2341 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2342 | } |
2343 | if (bmval1 & FATTR4_WORD1_MODE) { | |
2344 | if ((buflen -= 4) < 0) | |
2345 | goto out_resource; | |
2346 | WRITE32(stat.mode & S_IALLUGO); | |
2347 | } | |
2348 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
2349 | if ((buflen -= 4) < 0) | |
2350 | goto out_resource; | |
2351 | WRITE32(1); | |
2352 | } | |
2353 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
2354 | if ((buflen -= 4) < 0) | |
2355 | goto out_resource; | |
2356 | WRITE32(stat.nlink); | |
2357 | } | |
2358 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
2359 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); | |
2360 | if (status == nfserr_resource) | |
2361 | goto out_resource; | |
2362 | if (status) | |
2363 | goto out; | |
2364 | } | |
2365 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
2366 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); | |
2367 | if (status == nfserr_resource) | |
2368 | goto out_resource; | |
2369 | if (status) | |
2370 | goto out; | |
2371 | } | |
2372 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
2373 | if ((buflen -= 8) < 0) | |
2374 | goto out_resource; | |
2375 | WRITE32((u32) MAJOR(stat.rdev)); | |
2376 | WRITE32((u32) MINOR(stat.rdev)); | |
2377 | } | |
2378 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
2379 | if ((buflen -= 8) < 0) | |
2380 | goto out_resource; | |
2381 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
2382 | WRITE64(dummy64); | |
2383 | } | |
2384 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
2385 | if ((buflen -= 8) < 0) | |
2386 | goto out_resource; | |
2387 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
2388 | WRITE64(dummy64); | |
2389 | } | |
2390 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
2391 | if ((buflen -= 8) < 0) | |
2392 | goto out_resource; | |
2393 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
2394 | WRITE64(dummy64); | |
2395 | } | |
2396 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
2397 | if ((buflen -= 8) < 0) | |
2398 | goto out_resource; | |
2399 | dummy64 = (u64)stat.blocks << 9; | |
2400 | WRITE64(dummy64); | |
2401 | } | |
2402 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
2403 | if ((buflen -= 12) < 0) | |
2404 | goto out_resource; | |
2405 | WRITE32(0); | |
2406 | WRITE32(stat.atime.tv_sec); | |
2407 | WRITE32(stat.atime.tv_nsec); | |
2408 | } | |
2409 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
2410 | if ((buflen -= 12) < 0) | |
2411 | goto out_resource; | |
2412 | WRITE32(0); | |
2413 | WRITE32(1); | |
2414 | WRITE32(0); | |
2415 | } | |
2416 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
2417 | if ((buflen -= 12) < 0) | |
2418 | goto out_resource; | |
2419 | WRITE32(0); | |
2420 | WRITE32(stat.ctime.tv_sec); | |
2421 | WRITE32(stat.ctime.tv_nsec); | |
2422 | } | |
2423 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
2424 | if ((buflen -= 12) < 0) | |
2425 | goto out_resource; | |
2426 | WRITE32(0); | |
2427 | WRITE32(stat.mtime.tv_sec); | |
2428 | WRITE32(stat.mtime.tv_nsec); | |
2429 | } | |
2430 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
1da177e4 LT |
2431 | if ((buflen -= 8) < 0) |
2432 | goto out_resource; | |
406a7ea9 FF |
2433 | /* |
2434 | * Get parent's attributes if not ignoring crossmount | |
2435 | * and this is the root of a cross-mounted filesystem. | |
2436 | */ | |
2437 | if (ignore_crossmnt == 0 && | |
ae7095a7 BF |
2438 | dentry == exp->ex_path.mnt->mnt_root) |
2439 | get_parent_attributes(exp, &stat); | |
40ee5dc6 | 2440 | WRITE64(stat.ino); |
1da177e4 | 2441 | } |
8c18f205 BH |
2442 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
2443 | WRITE32(3); | |
2444 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0); | |
2445 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1); | |
2446 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2); | |
2447 | } | |
7e705706 | 2448 | |
1da177e4 | 2449 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); |
84822d0b | 2450 | *buffer = p; |
1da177e4 LT |
2451 | status = nfs_ok; |
2452 | ||
2453 | out: | |
28e05dd8 | 2454 | kfree(acl); |
1da177e4 LT |
2455 | if (fhp == &tempfh) |
2456 | fh_put(&tempfh); | |
2457 | return status; | |
2458 | out_nfserr: | |
b8dd7b9a | 2459 | status = nfserrno(err); |
1da177e4 LT |
2460 | goto out; |
2461 | out_resource: | |
1da177e4 LT |
2462 | status = nfserr_resource; |
2463 | goto out; | |
2464 | out_serverfault: | |
2465 | status = nfserr_serverfault; | |
2466 | goto out; | |
2467 | } | |
2468 | ||
c0ce6ec8 BF |
2469 | static inline int attributes_need_mount(u32 *bmval) |
2470 | { | |
2471 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2472 | return 1; | |
2473 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2474 | return 1; | |
2475 | return 0; | |
2476 | } | |
2477 | ||
b37ad28b | 2478 | static __be32 |
1da177e4 | 2479 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, |
84822d0b | 2480 | const char *name, int namlen, __be32 **p, int buflen) |
1da177e4 LT |
2481 | { |
2482 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2483 | struct dentry *dentry; | |
b37ad28b | 2484 | __be32 nfserr; |
406a7ea9 | 2485 | int ignore_crossmnt = 0; |
1da177e4 LT |
2486 | |
2487 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
2488 | if (IS_ERR(dentry)) | |
2489 | return nfserrno(PTR_ERR(dentry)); | |
b2c0cea6 BF |
2490 | if (!dentry->d_inode) { |
2491 | /* | |
2492 | * nfsd_buffered_readdir drops the i_mutex between | |
2493 | * readdir and calling this callback, leaving a window | |
2494 | * where this directory entry could have gone away. | |
2495 | */ | |
2496 | dput(dentry); | |
2497 | return nfserr_noent; | |
2498 | } | |
1da177e4 LT |
2499 | |
2500 | exp_get(exp); | |
406a7ea9 FF |
2501 | /* |
2502 | * In the case of a mountpoint, the client may be asking for | |
2503 | * attributes that are only properties of the underlying filesystem | |
2504 | * as opposed to the cross-mounted file system. In such a case, | |
2505 | * we will not follow the cross mount and will fill the attribtutes | |
2506 | * directly from the mountpoint dentry. | |
2507 | */ | |
3227fa41 | 2508 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
2509 | int err; |
2510 | ||
3227fa41 BF |
2511 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
2512 | && !attributes_need_mount(cd->rd_bmval)) { | |
2513 | ignore_crossmnt = 1; | |
2514 | goto out_encode; | |
2515 | } | |
dcb488a3 AA |
2516 | /* |
2517 | * Why the heck aren't we just using nfsd_lookup?? | |
2518 | * Different "."/".." handling? Something else? | |
2519 | * At least, add a comment here to explain.... | |
2520 | */ | |
021d3a72 BF |
2521 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
2522 | if (err) { | |
2523 | nfserr = nfserrno(err); | |
1da177e4 LT |
2524 | goto out_put; |
2525 | } | |
dcb488a3 AA |
2526 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
2527 | if (nfserr) | |
2528 | goto out_put; | |
1da177e4 LT |
2529 | |
2530 | } | |
3227fa41 | 2531 | out_encode: |
1da177e4 | 2532 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, |
406a7ea9 | 2533 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
2534 | out_put: |
2535 | dput(dentry); | |
2536 | exp_put(exp); | |
2537 | return nfserr; | |
2538 | } | |
2539 | ||
2ebbc012 | 2540 | static __be32 * |
b37ad28b | 2541 | nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr) |
1da177e4 | 2542 | { |
2ebbc012 | 2543 | __be32 *attrlenp; |
1da177e4 LT |
2544 | |
2545 | if (buflen < 6) | |
2546 | return NULL; | |
2547 | *p++ = htonl(2); | |
2548 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
2549 | *p++ = htonl(0); /* bmval1 */ | |
2550 | ||
2551 | attrlenp = p++; | |
2552 | *p++ = nfserr; /* no htonl */ | |
2553 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
2554 | return p; | |
2555 | } | |
2556 | ||
2557 | static int | |
a0ad13ef N |
2558 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
2559 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 2560 | { |
a0ad13ef | 2561 | struct readdir_cd *ccd = ccdv; |
1da177e4 LT |
2562 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
2563 | int buflen; | |
2ebbc012 | 2564 | __be32 *p = cd->buffer; |
b2c0cea6 | 2565 | __be32 *cookiep; |
b37ad28b | 2566 | __be32 nfserr = nfserr_toosmall; |
1da177e4 LT |
2567 | |
2568 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
2569 | if (name && isdotent(name, namlen)) { | |
2570 | cd->common.err = nfs_ok; | |
2571 | return 0; | |
2572 | } | |
2573 | ||
2574 | if (cd->offset) | |
2575 | xdr_encode_hyper(cd->offset, (u64) offset); | |
2576 | ||
2577 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); | |
2578 | if (buflen < 0) | |
2579 | goto fail; | |
2580 | ||
2581 | *p++ = xdr_one; /* mark entry present */ | |
b2c0cea6 | 2582 | cookiep = p; |
1da177e4 LT |
2583 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
2584 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
2585 | ||
84822d0b | 2586 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, &p, buflen); |
1da177e4 LT |
2587 | switch (nfserr) { |
2588 | case nfs_ok: | |
1da177e4 LT |
2589 | break; |
2590 | case nfserr_resource: | |
2591 | nfserr = nfserr_toosmall; | |
2592 | goto fail; | |
b2c0cea6 BF |
2593 | case nfserr_noent: |
2594 | goto skip_entry; | |
1da177e4 LT |
2595 | default: |
2596 | /* | |
2597 | * If the client requested the RDATTR_ERROR attribute, | |
2598 | * we stuff the error code into this attribute | |
2599 | * and continue. If this attribute was not requested, | |
2600 | * then in accordance with the spec, we fail the | |
2601 | * entire READDIR operation(!) | |
2602 | */ | |
2603 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
2604 | goto fail; | |
1da177e4 | 2605 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
34081efc FI |
2606 | if (p == NULL) { |
2607 | nfserr = nfserr_toosmall; | |
1da177e4 | 2608 | goto fail; |
34081efc | 2609 | } |
1da177e4 LT |
2610 | } |
2611 | cd->buflen -= (p - cd->buffer); | |
2612 | cd->buffer = p; | |
b2c0cea6 BF |
2613 | cd->offset = cookiep; |
2614 | skip_entry: | |
1da177e4 LT |
2615 | cd->common.err = nfs_ok; |
2616 | return 0; | |
2617 | fail: | |
2618 | cd->common.err = nfserr; | |
2619 | return -EINVAL; | |
2620 | } | |
2621 | ||
e2f282b9 BH |
2622 | static void |
2623 | nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid) | |
2624 | { | |
bc749ca4 | 2625 | __be32 *p; |
e2f282b9 BH |
2626 | |
2627 | RESERVE_SPACE(sizeof(stateid_t)); | |
2628 | WRITE32(sid->si_generation); | |
2629 | WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
2630 | ADJUST_ARGS(); | |
2631 | } | |
2632 | ||
695e12f8 | 2633 | static __be32 |
b37ad28b | 2634 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 2635 | { |
bc749ca4 | 2636 | __be32 *p; |
1da177e4 LT |
2637 | |
2638 | if (!nfserr) { | |
2639 | RESERVE_SPACE(8); | |
2640 | WRITE32(access->ac_supported); | |
2641 | WRITE32(access->ac_resp_access); | |
2642 | ADJUST_ARGS(); | |
2643 | } | |
695e12f8 | 2644 | return nfserr; |
1da177e4 LT |
2645 | } |
2646 | ||
1d1bc8f2 BF |
2647 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
2648 | { | |
2649 | __be32 *p; | |
2650 | ||
2651 | if (!nfserr) { | |
2652 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 8); | |
2653 | WRITEMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
2654 | WRITE32(bcts->dir); | |
6e67b5d1 | 2655 | /* Sorry, we do not yet support RDMA over 4.1: */ |
1d1bc8f2 BF |
2656 | WRITE32(0); |
2657 | ADJUST_ARGS(); | |
2658 | } | |
2659 | return nfserr; | |
2660 | } | |
2661 | ||
695e12f8 | 2662 | static __be32 |
b37ad28b | 2663 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 LT |
2664 | { |
2665 | ENCODE_SEQID_OP_HEAD; | |
2666 | ||
e2f282b9 BH |
2667 | if (!nfserr) |
2668 | nfsd4_encode_stateid(resp, &close->cl_stateid); | |
2669 | ||
f3e42237 | 2670 | encode_seqid_op_tail(resp, save, nfserr); |
695e12f8 | 2671 | return nfserr; |
1da177e4 LT |
2672 | } |
2673 | ||
2674 | ||
695e12f8 | 2675 | static __be32 |
b37ad28b | 2676 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 2677 | { |
bc749ca4 | 2678 | __be32 *p; |
1da177e4 LT |
2679 | |
2680 | if (!nfserr) { | |
ab4684d1 CL |
2681 | RESERVE_SPACE(NFS4_VERIFIER_SIZE); |
2682 | WRITEMEM(commit->co_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 LT |
2683 | ADJUST_ARGS(); |
2684 | } | |
695e12f8 | 2685 | return nfserr; |
1da177e4 LT |
2686 | } |
2687 | ||
695e12f8 | 2688 | static __be32 |
b37ad28b | 2689 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 2690 | { |
bc749ca4 | 2691 | __be32 *p; |
1da177e4 LT |
2692 | |
2693 | if (!nfserr) { | |
2694 | RESERVE_SPACE(32); | |
c654b8a9 | 2695 | write_cinfo(&p, &create->cr_cinfo); |
1da177e4 LT |
2696 | WRITE32(2); |
2697 | WRITE32(create->cr_bmval[0]); | |
2698 | WRITE32(create->cr_bmval[1]); | |
2699 | ADJUST_ARGS(); | |
2700 | } | |
695e12f8 | 2701 | return nfserr; |
1da177e4 LT |
2702 | } |
2703 | ||
b37ad28b AV |
2704 | static __be32 |
2705 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
2706 | { |
2707 | struct svc_fh *fhp = getattr->ga_fhp; | |
2708 | int buflen; | |
2709 | ||
2710 | if (nfserr) | |
2711 | return nfserr; | |
2712 | ||
2713 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); | |
2714 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, | |
84822d0b | 2715 | &resp->p, buflen, getattr->ga_bmval, |
406a7ea9 | 2716 | resp->rqstp, 0); |
1da177e4 LT |
2717 | return nfserr; |
2718 | } | |
2719 | ||
695e12f8 BH |
2720 | static __be32 |
2721 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 2722 | { |
695e12f8 | 2723 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 2724 | unsigned int len; |
bc749ca4 | 2725 | __be32 *p; |
1da177e4 LT |
2726 | |
2727 | if (!nfserr) { | |
2728 | len = fhp->fh_handle.fh_size; | |
2729 | RESERVE_SPACE(len + 4); | |
2730 | WRITE32(len); | |
2731 | WRITEMEM(&fhp->fh_handle.fh_base, len); | |
2732 | ADJUST_ARGS(); | |
2733 | } | |
695e12f8 | 2734 | return nfserr; |
1da177e4 LT |
2735 | } |
2736 | ||
2737 | /* | |
2738 | * Including all fields other than the name, a LOCK4denied structure requires | |
2739 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
2740 | */ | |
2741 | static void | |
2742 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) | |
2743 | { | |
7c13f344 | 2744 | struct xdr_netobj *conf = &ld->ld_owner; |
bc749ca4 | 2745 | __be32 *p; |
1da177e4 | 2746 | |
7c13f344 | 2747 | RESERVE_SPACE(32 + XDR_LEN(conf->len)); |
1da177e4 LT |
2748 | WRITE64(ld->ld_start); |
2749 | WRITE64(ld->ld_length); | |
2750 | WRITE32(ld->ld_type); | |
7c13f344 | 2751 | if (conf->len) { |
1da177e4 | 2752 | WRITEMEM(&ld->ld_clientid, 8); |
7c13f344 BF |
2753 | WRITE32(conf->len); |
2754 | WRITEMEM(conf->data, conf->len); | |
2755 | kfree(conf->data); | |
1da177e4 LT |
2756 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
2757 | WRITE64((u64)0); /* clientid */ | |
2758 | WRITE32(0); /* length of owner name */ | |
2759 | } | |
2760 | ADJUST_ARGS(); | |
2761 | } | |
2762 | ||
695e12f8 | 2763 | static __be32 |
b37ad28b | 2764 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 2765 | { |
1da177e4 LT |
2766 | ENCODE_SEQID_OP_HEAD; |
2767 | ||
e2f282b9 BH |
2768 | if (!nfserr) |
2769 | nfsd4_encode_stateid(resp, &lock->lk_resp_stateid); | |
2770 | else if (nfserr == nfserr_denied) | |
1da177e4 LT |
2771 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); |
2772 | ||
f3e42237 | 2773 | encode_seqid_op_tail(resp, save, nfserr); |
695e12f8 | 2774 | return nfserr; |
1da177e4 LT |
2775 | } |
2776 | ||
695e12f8 | 2777 | static __be32 |
b37ad28b | 2778 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 LT |
2779 | { |
2780 | if (nfserr == nfserr_denied) | |
2781 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); | |
695e12f8 | 2782 | return nfserr; |
1da177e4 LT |
2783 | } |
2784 | ||
695e12f8 | 2785 | static __be32 |
b37ad28b | 2786 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 LT |
2787 | { |
2788 | ENCODE_SEQID_OP_HEAD; | |
2789 | ||
e2f282b9 BH |
2790 | if (!nfserr) |
2791 | nfsd4_encode_stateid(resp, &locku->lu_stateid); | |
2792 | ||
f3e42237 | 2793 | encode_seqid_op_tail(resp, save, nfserr); |
695e12f8 | 2794 | return nfserr; |
1da177e4 LT |
2795 | } |
2796 | ||
2797 | ||
695e12f8 | 2798 | static __be32 |
b37ad28b | 2799 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 2800 | { |
bc749ca4 | 2801 | __be32 *p; |
1da177e4 LT |
2802 | |
2803 | if (!nfserr) { | |
2804 | RESERVE_SPACE(20); | |
c654b8a9 | 2805 | write_cinfo(&p, &link->li_cinfo); |
1da177e4 LT |
2806 | ADJUST_ARGS(); |
2807 | } | |
695e12f8 | 2808 | return nfserr; |
1da177e4 LT |
2809 | } |
2810 | ||
2811 | ||
695e12f8 | 2812 | static __be32 |
b37ad28b | 2813 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 2814 | { |
bc749ca4 | 2815 | __be32 *p; |
1da177e4 LT |
2816 | ENCODE_SEQID_OP_HEAD; |
2817 | ||
2818 | if (nfserr) | |
2819 | goto out; | |
2820 | ||
e2f282b9 BH |
2821 | nfsd4_encode_stateid(resp, &open->op_stateid); |
2822 | RESERVE_SPACE(40); | |
c654b8a9 | 2823 | write_cinfo(&p, &open->op_cinfo); |
1da177e4 LT |
2824 | WRITE32(open->op_rflags); |
2825 | WRITE32(2); | |
2826 | WRITE32(open->op_bmval[0]); | |
2827 | WRITE32(open->op_bmval[1]); | |
2828 | WRITE32(open->op_delegate_type); | |
2829 | ADJUST_ARGS(); | |
2830 | ||
2831 | switch (open->op_delegate_type) { | |
2832 | case NFS4_OPEN_DELEGATE_NONE: | |
2833 | break; | |
2834 | case NFS4_OPEN_DELEGATE_READ: | |
e2f282b9 BH |
2835 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2836 | RESERVE_SPACE(20); | |
7b190fec | 2837 | WRITE32(open->op_recall); |
1da177e4 LT |
2838 | |
2839 | /* | |
2840 | * TODO: ACE's in delegations | |
2841 | */ | |
2842 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2843 | WRITE32(0); | |
2844 | WRITE32(0); | |
2845 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2846 | ADJUST_ARGS(); | |
2847 | break; | |
2848 | case NFS4_OPEN_DELEGATE_WRITE: | |
e2f282b9 BH |
2849 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2850 | RESERVE_SPACE(32); | |
1da177e4 LT |
2851 | WRITE32(0); |
2852 | ||
2853 | /* | |
2854 | * TODO: space_limit's in delegations | |
2855 | */ | |
2856 | WRITE32(NFS4_LIMIT_SIZE); | |
2857 | WRITE32(~(u32)0); | |
2858 | WRITE32(~(u32)0); | |
2859 | ||
2860 | /* | |
2861 | * TODO: ACE's in delegations | |
2862 | */ | |
2863 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2864 | WRITE32(0); | |
2865 | WRITE32(0); | |
2866 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2867 | ADJUST_ARGS(); | |
2868 | break; | |
d24433cd BH |
2869 | case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */ |
2870 | switch (open->op_why_no_deleg) { | |
2871 | case WND4_CONTENTION: | |
2872 | case WND4_RESOURCE: | |
2873 | RESERVE_SPACE(8); | |
2874 | WRITE32(open->op_why_no_deleg); | |
2875 | WRITE32(0); /* deleg signaling not supported yet */ | |
2876 | break; | |
2877 | default: | |
2878 | RESERVE_SPACE(4); | |
2879 | WRITE32(open->op_why_no_deleg); | |
2880 | } | |
2881 | ADJUST_ARGS(); | |
2882 | break; | |
1da177e4 LT |
2883 | default: |
2884 | BUG(); | |
2885 | } | |
2886 | /* XXX save filehandle here */ | |
2887 | out: | |
f3e42237 | 2888 | encode_seqid_op_tail(resp, save, nfserr); |
695e12f8 | 2889 | return nfserr; |
1da177e4 LT |
2890 | } |
2891 | ||
695e12f8 | 2892 | static __be32 |
b37ad28b | 2893 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 LT |
2894 | { |
2895 | ENCODE_SEQID_OP_HEAD; | |
e2f282b9 BH |
2896 | |
2897 | if (!nfserr) | |
2898 | nfsd4_encode_stateid(resp, &oc->oc_resp_stateid); | |
1da177e4 | 2899 | |
f3e42237 | 2900 | encode_seqid_op_tail(resp, save, nfserr); |
695e12f8 | 2901 | return nfserr; |
1da177e4 LT |
2902 | } |
2903 | ||
695e12f8 | 2904 | static __be32 |
b37ad28b | 2905 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 LT |
2906 | { |
2907 | ENCODE_SEQID_OP_HEAD; | |
e2f282b9 BH |
2908 | |
2909 | if (!nfserr) | |
2910 | nfsd4_encode_stateid(resp, &od->od_stateid); | |
1da177e4 | 2911 | |
f3e42237 | 2912 | encode_seqid_op_tail(resp, save, nfserr); |
695e12f8 | 2913 | return nfserr; |
1da177e4 LT |
2914 | } |
2915 | ||
b37ad28b AV |
2916 | static __be32 |
2917 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
44524359 | 2918 | struct nfsd4_read *read) |
1da177e4 LT |
2919 | { |
2920 | u32 eof; | |
afc59400 BF |
2921 | int v; |
2922 | struct page *page; | |
1da177e4 LT |
2923 | unsigned long maxcount; |
2924 | long len; | |
bc749ca4 | 2925 | __be32 *p; |
1da177e4 LT |
2926 | |
2927 | if (nfserr) | |
2928 | return nfserr; | |
2929 | if (resp->xbuf->page_len) | |
2930 | return nfserr_resource; | |
2931 | ||
2932 | RESERVE_SPACE(8); /* eof flag and byte count */ | |
2933 | ||
7adae489 | 2934 | maxcount = svc_max_payload(resp->rqstp); |
1da177e4 LT |
2935 | if (maxcount > read->rd_length) |
2936 | maxcount = read->rd_length; | |
2937 | ||
2938 | len = maxcount; | |
2939 | v = 0; | |
2940 | while (len > 0) { | |
afc59400 BF |
2941 | page = *(resp->rqstp->rq_next_page); |
2942 | if (!page) { /* ran out of pages */ | |
d5f50b0c BF |
2943 | maxcount -= len; |
2944 | break; | |
2945 | } | |
afc59400 | 2946 | resp->rqstp->rq_vec[v].iov_base = page_address(page); |
3cc03b16 | 2947 | resp->rqstp->rq_vec[v].iov_len = |
44524359 | 2948 | len < PAGE_SIZE ? len : PAGE_SIZE; |
afc59400 | 2949 | resp->rqstp->rq_next_page++; |
1da177e4 LT |
2950 | v++; |
2951 | len -= PAGE_SIZE; | |
2952 | } | |
2953 | read->rd_vlen = v; | |
2954 | ||
039a87ca | 2955 | nfserr = nfsd_read_file(read->rd_rqstp, read->rd_fhp, read->rd_filp, |
3cc03b16 | 2956 | read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, |
1da177e4 LT |
2957 | &maxcount); |
2958 | ||
1da177e4 LT |
2959 | if (nfserr) |
2960 | return nfserr; | |
44524359 N |
2961 | eof = (read->rd_offset + maxcount >= |
2962 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 LT |
2963 | |
2964 | WRITE32(eof); | |
2965 | WRITE32(maxcount); | |
2966 | ADJUST_ARGS(); | |
6ed6decc N |
2967 | resp->xbuf->head[0].iov_len = (char*)p |
2968 | - (char*)resp->xbuf->head[0].iov_base; | |
1da177e4 LT |
2969 | resp->xbuf->page_len = maxcount; |
2970 | ||
6ed6decc | 2971 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2972 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2973 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2974 | if (maxcount&3) { |
6ed6decc N |
2975 | RESERVE_SPACE(4); |
2976 | WRITE32(0); | |
1da177e4 LT |
2977 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2978 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2979 | ADJUST_ARGS(); |
1da177e4 LT |
2980 | } |
2981 | return 0; | |
2982 | } | |
2983 | ||
b37ad28b AV |
2984 | static __be32 |
2985 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
2986 | { |
2987 | int maxcount; | |
2988 | char *page; | |
bc749ca4 | 2989 | __be32 *p; |
1da177e4 LT |
2990 | |
2991 | if (nfserr) | |
2992 | return nfserr; | |
2993 | if (resp->xbuf->page_len) | |
2994 | return nfserr_resource; | |
afc59400 | 2995 | if (!*resp->rqstp->rq_next_page) |
d5f50b0c | 2996 | return nfserr_resource; |
1da177e4 | 2997 | |
afc59400 | 2998 | page = page_address(*(resp->rqstp->rq_next_page++)); |
1da177e4 LT |
2999 | |
3000 | maxcount = PAGE_SIZE; | |
3001 | RESERVE_SPACE(4); | |
3002 | ||
3003 | /* | |
3004 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
3005 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
3006 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
3007 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
3008 | */ | |
3009 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); | |
3010 | if (nfserr == nfserr_isdir) | |
3011 | return nfserr_inval; | |
3012 | if (nfserr) | |
3013 | return nfserr; | |
3014 | ||
3015 | WRITE32(maxcount); | |
3016 | ADJUST_ARGS(); | |
6ed6decc N |
3017 | resp->xbuf->head[0].iov_len = (char*)p |
3018 | - (char*)resp->xbuf->head[0].iov_base; | |
3019 | resp->xbuf->page_len = maxcount; | |
1da177e4 | 3020 | |
6ed6decc | 3021 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 3022 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 3023 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 3024 | if (maxcount&3) { |
6ed6decc N |
3025 | RESERVE_SPACE(4); |
3026 | WRITE32(0); | |
1da177e4 LT |
3027 | resp->xbuf->tail[0].iov_base += maxcount&3; |
3028 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 3029 | ADJUST_ARGS(); |
1da177e4 LT |
3030 | } |
3031 | return 0; | |
3032 | } | |
3033 | ||
b37ad28b AV |
3034 | static __be32 |
3035 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
3036 | { |
3037 | int maxcount; | |
3038 | loff_t offset; | |
2ebbc012 | 3039 | __be32 *page, *savep, *tailbase; |
bc749ca4 | 3040 | __be32 *p; |
1da177e4 LT |
3041 | |
3042 | if (nfserr) | |
3043 | return nfserr; | |
3044 | if (resp->xbuf->page_len) | |
3045 | return nfserr_resource; | |
afc59400 | 3046 | if (!*resp->rqstp->rq_next_page) |
d5f50b0c | 3047 | return nfserr_resource; |
1da177e4 | 3048 | |
ab4684d1 | 3049 | RESERVE_SPACE(NFS4_VERIFIER_SIZE); |
1da177e4 LT |
3050 | savep = p; |
3051 | ||
3052 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
3053 | WRITE32(0); | |
3054 | WRITE32(0); | |
3055 | ADJUST_ARGS(); | |
3056 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; | |
bb6e8a9f | 3057 | tailbase = p; |
1da177e4 LT |
3058 | |
3059 | maxcount = PAGE_SIZE; | |
3060 | if (maxcount > readdir->rd_maxcount) | |
3061 | maxcount = readdir->rd_maxcount; | |
3062 | ||
3063 | /* | |
3064 | * Convert from bytes to words, account for the two words already | |
3065 | * written, make sure to leave two words at the end for the next | |
3066 | * pointer and eof field. | |
3067 | */ | |
3068 | maxcount = (maxcount >> 2) - 4; | |
3069 | if (maxcount < 0) { | |
3070 | nfserr = nfserr_toosmall; | |
3071 | goto err_no_verf; | |
3072 | } | |
3073 | ||
afc59400 | 3074 | page = page_address(*(resp->rqstp->rq_next_page++)); |
1da177e4 LT |
3075 | readdir->common.err = 0; |
3076 | readdir->buflen = maxcount; | |
3077 | readdir->buffer = page; | |
3078 | readdir->offset = NULL; | |
3079 | ||
3080 | offset = readdir->rd_cookie; | |
3081 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
3082 | &offset, | |
3083 | &readdir->common, nfsd4_encode_dirent); | |
3084 | if (nfserr == nfs_ok && | |
3085 | readdir->common.err == nfserr_toosmall && | |
3086 | readdir->buffer == page) | |
3087 | nfserr = nfserr_toosmall; | |
1da177e4 LT |
3088 | if (nfserr) |
3089 | goto err_no_verf; | |
3090 | ||
3091 | if (readdir->offset) | |
3092 | xdr_encode_hyper(readdir->offset, offset); | |
3093 | ||
3094 | p = readdir->buffer; | |
3095 | *p++ = 0; /* no more entries */ | |
3096 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
afc59400 BF |
3097 | resp->xbuf->page_len = ((char*)p) - |
3098 | (char*)page_address(*(resp->rqstp->rq_next_page-1)); | |
1da177e4 | 3099 | |
bb6e8a9f | 3100 | /* Use rest of head for padding and remaining ops: */ |
bb6e8a9f | 3101 | resp->xbuf->tail[0].iov_base = tailbase; |
1da177e4 LT |
3102 | resp->xbuf->tail[0].iov_len = 0; |
3103 | resp->p = resp->xbuf->tail[0].iov_base; | |
bb6e8a9f | 3104 | resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; |
1da177e4 LT |
3105 | |
3106 | return 0; | |
3107 | err_no_verf: | |
3108 | p = savep; | |
3109 | ADJUST_ARGS(); | |
3110 | return nfserr; | |
3111 | } | |
3112 | ||
695e12f8 | 3113 | static __be32 |
b37ad28b | 3114 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 3115 | { |
bc749ca4 | 3116 | __be32 *p; |
1da177e4 LT |
3117 | |
3118 | if (!nfserr) { | |
3119 | RESERVE_SPACE(20); | |
c654b8a9 | 3120 | write_cinfo(&p, &remove->rm_cinfo); |
1da177e4 LT |
3121 | ADJUST_ARGS(); |
3122 | } | |
695e12f8 | 3123 | return nfserr; |
1da177e4 LT |
3124 | } |
3125 | ||
695e12f8 | 3126 | static __be32 |
b37ad28b | 3127 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 3128 | { |
bc749ca4 | 3129 | __be32 *p; |
1da177e4 LT |
3130 | |
3131 | if (!nfserr) { | |
3132 | RESERVE_SPACE(40); | |
c654b8a9 BF |
3133 | write_cinfo(&p, &rename->rn_sinfo); |
3134 | write_cinfo(&p, &rename->rn_tinfo); | |
1da177e4 LT |
3135 | ADJUST_ARGS(); |
3136 | } | |
695e12f8 | 3137 | return nfserr; |
1da177e4 LT |
3138 | } |
3139 | ||
695e12f8 | 3140 | static __be32 |
22b6dee8 MJ |
3141 | nfsd4_do_encode_secinfo(struct nfsd4_compoundres *resp, |
3142 | __be32 nfserr,struct svc_export *exp) | |
dcb488a3 AA |
3143 | { |
3144 | int i = 0; | |
4796f457 BF |
3145 | u32 nflavs; |
3146 | struct exp_flavor_info *flavs; | |
3147 | struct exp_flavor_info def_flavs[2]; | |
bc749ca4 | 3148 | __be32 *p; |
dcb488a3 AA |
3149 | |
3150 | if (nfserr) | |
3151 | goto out; | |
4796f457 BF |
3152 | if (exp->ex_nflavors) { |
3153 | flavs = exp->ex_flavors; | |
3154 | nflavs = exp->ex_nflavors; | |
3155 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
3156 | flavs = def_flavs; | |
3157 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
3158 | nflavs = 2; | |
3159 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
3160 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
3161 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
3162 | nflavs = 1; | |
3163 | flavs[0].pseudoflavor | |
3164 | = svcauth_gss_flavor(exp->ex_client); | |
3165 | } else { | |
3166 | nflavs = 1; | |
3167 | flavs[0].pseudoflavor | |
3168 | = exp->ex_client->flavour->flavour; | |
3169 | } | |
3170 | } | |
3171 | ||
dcb488a3 | 3172 | RESERVE_SPACE(4); |
4796f457 | 3173 | WRITE32(nflavs); |
dcb488a3 | 3174 | ADJUST_ARGS(); |
4796f457 BF |
3175 | for (i = 0; i < nflavs; i++) { |
3176 | u32 flav = flavs[i].pseudoflavor; | |
dcb488a3 AA |
3177 | struct gss_api_mech *gm = gss_mech_get_by_pseudoflavor(flav); |
3178 | ||
3179 | if (gm) { | |
3180 | RESERVE_SPACE(4); | |
3181 | WRITE32(RPC_AUTH_GSS); | |
3182 | ADJUST_ARGS(); | |
3183 | RESERVE_SPACE(4 + gm->gm_oid.len); | |
3184 | WRITE32(gm->gm_oid.len); | |
3185 | WRITEMEM(gm->gm_oid.data, gm->gm_oid.len); | |
3186 | ADJUST_ARGS(); | |
3187 | RESERVE_SPACE(4); | |
3188 | WRITE32(0); /* qop */ | |
3189 | ADJUST_ARGS(); | |
3190 | RESERVE_SPACE(4); | |
3191 | WRITE32(gss_pseudoflavor_to_service(gm, flav)); | |
3192 | ADJUST_ARGS(); | |
3193 | gss_mech_put(gm); | |
3194 | } else { | |
3195 | RESERVE_SPACE(4); | |
3196 | WRITE32(flav); | |
3197 | ADJUST_ARGS(); | |
3198 | } | |
3199 | } | |
3200 | out: | |
3201 | if (exp) | |
3202 | exp_put(exp); | |
695e12f8 | 3203 | return nfserr; |
dcb488a3 AA |
3204 | } |
3205 | ||
22b6dee8 MJ |
3206 | static __be32 |
3207 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3208 | struct nfsd4_secinfo *secinfo) | |
3209 | { | |
3210 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->si_exp); | |
3211 | } | |
3212 | ||
3213 | static __be32 | |
3214 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3215 | struct nfsd4_secinfo_no_name *secinfo) | |
3216 | { | |
3217 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->sin_exp); | |
3218 | } | |
3219 | ||
1da177e4 LT |
3220 | /* |
3221 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
3222 | * regardless of the error status. | |
3223 | */ | |
695e12f8 | 3224 | static __be32 |
b37ad28b | 3225 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 3226 | { |
bc749ca4 | 3227 | __be32 *p; |
1da177e4 LT |
3228 | |
3229 | RESERVE_SPACE(12); | |
3230 | if (nfserr) { | |
3231 | WRITE32(2); | |
3232 | WRITE32(0); | |
3233 | WRITE32(0); | |
3234 | } | |
3235 | else { | |
3236 | WRITE32(2); | |
3237 | WRITE32(setattr->sa_bmval[0]); | |
3238 | WRITE32(setattr->sa_bmval[1]); | |
3239 | } | |
3240 | ADJUST_ARGS(); | |
695e12f8 | 3241 | return nfserr; |
1da177e4 LT |
3242 | } |
3243 | ||
695e12f8 | 3244 | static __be32 |
b37ad28b | 3245 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 3246 | { |
bc749ca4 | 3247 | __be32 *p; |
1da177e4 LT |
3248 | |
3249 | if (!nfserr) { | |
ab4684d1 | 3250 | RESERVE_SPACE(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 3251 | WRITEMEM(&scd->se_clientid, 8); |
ab4684d1 | 3252 | WRITEMEM(&scd->se_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
3253 | ADJUST_ARGS(); |
3254 | } | |
3255 | else if (nfserr == nfserr_clid_inuse) { | |
3256 | RESERVE_SPACE(8); | |
3257 | WRITE32(0); | |
3258 | WRITE32(0); | |
3259 | ADJUST_ARGS(); | |
3260 | } | |
695e12f8 | 3261 | return nfserr; |
1da177e4 LT |
3262 | } |
3263 | ||
695e12f8 | 3264 | static __be32 |
b37ad28b | 3265 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 3266 | { |
bc749ca4 | 3267 | __be32 *p; |
1da177e4 LT |
3268 | |
3269 | if (!nfserr) { | |
3270 | RESERVE_SPACE(16); | |
3271 | WRITE32(write->wr_bytes_written); | |
3272 | WRITE32(write->wr_how_written); | |
ab4684d1 | 3273 | WRITEMEM(write->wr_verifier.data, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
3274 | ADJUST_ARGS(); |
3275 | } | |
695e12f8 | 3276 | return nfserr; |
1da177e4 LT |
3277 | } |
3278 | ||
2db134eb | 3279 | static __be32 |
57b7b43b | 3280 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3281 | struct nfsd4_exchange_id *exid) |
3282 | { | |
bc749ca4 | 3283 | __be32 *p; |
0733d213 AA |
3284 | char *major_id; |
3285 | char *server_scope; | |
3286 | int major_id_sz; | |
3287 | int server_scope_sz; | |
3288 | uint64_t minor_id = 0; | |
3289 | ||
3290 | if (nfserr) | |
3291 | return nfserr; | |
3292 | ||
3293 | major_id = utsname()->nodename; | |
3294 | major_id_sz = strlen(major_id); | |
3295 | server_scope = utsname()->nodename; | |
3296 | server_scope_sz = strlen(server_scope); | |
3297 | ||
3298 | RESERVE_SPACE( | |
3299 | 8 /* eir_clientid */ + | |
3300 | 4 /* eir_sequenceid */ + | |
3301 | 4 /* eir_flags */ + | |
3302 | 4 /* spr_how (SP4_NONE) */ + | |
3303 | 8 /* so_minor_id */ + | |
3304 | 4 /* so_major_id.len */ + | |
3305 | (XDR_QUADLEN(major_id_sz) * 4) + | |
3306 | 4 /* eir_server_scope.len */ + | |
3307 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
3308 | 4 /* eir_server_impl_id.count (0) */); | |
3309 | ||
3310 | WRITEMEM(&exid->clientid, 8); | |
3311 | WRITE32(exid->seqid); | |
3312 | WRITE32(exid->flags); | |
3313 | ||
3314 | /* state_protect4_r. Currently only support SP4_NONE */ | |
3315 | BUG_ON(exid->spa_how != SP4_NONE); | |
3316 | WRITE32(exid->spa_how); | |
3317 | ||
3318 | /* The server_owner struct */ | |
3319 | WRITE64(minor_id); /* Minor id */ | |
3320 | /* major id */ | |
3321 | WRITE32(major_id_sz); | |
3322 | WRITEMEM(major_id, major_id_sz); | |
3323 | ||
3324 | /* Server scope */ | |
3325 | WRITE32(server_scope_sz); | |
3326 | WRITEMEM(server_scope, server_scope_sz); | |
3327 | ||
3328 | /* Implementation id */ | |
3329 | WRITE32(0); /* zero length nfs_impl_id4 array */ | |
3330 | ADJUST_ARGS(); | |
3331 | return 0; | |
2db134eb AA |
3332 | } |
3333 | ||
3334 | static __be32 | |
57b7b43b | 3335 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3336 | struct nfsd4_create_session *sess) |
3337 | { | |
bc749ca4 | 3338 | __be32 *p; |
ec6b5d7b AA |
3339 | |
3340 | if (nfserr) | |
3341 | return nfserr; | |
3342 | ||
3343 | RESERVE_SPACE(24); | |
3344 | WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3345 | WRITE32(sess->seqid); | |
3346 | WRITE32(sess->flags); | |
3347 | ADJUST_ARGS(); | |
3348 | ||
3349 | RESERVE_SPACE(28); | |
3350 | WRITE32(0); /* headerpadsz */ | |
3351 | WRITE32(sess->fore_channel.maxreq_sz); | |
3352 | WRITE32(sess->fore_channel.maxresp_sz); | |
3353 | WRITE32(sess->fore_channel.maxresp_cached); | |
3354 | WRITE32(sess->fore_channel.maxops); | |
3355 | WRITE32(sess->fore_channel.maxreqs); | |
3356 | WRITE32(sess->fore_channel.nr_rdma_attrs); | |
3357 | ADJUST_ARGS(); | |
3358 | ||
3359 | if (sess->fore_channel.nr_rdma_attrs) { | |
3360 | RESERVE_SPACE(4); | |
3361 | WRITE32(sess->fore_channel.rdma_attrs); | |
3362 | ADJUST_ARGS(); | |
3363 | } | |
3364 | ||
3365 | RESERVE_SPACE(28); | |
3366 | WRITE32(0); /* headerpadsz */ | |
3367 | WRITE32(sess->back_channel.maxreq_sz); | |
3368 | WRITE32(sess->back_channel.maxresp_sz); | |
3369 | WRITE32(sess->back_channel.maxresp_cached); | |
3370 | WRITE32(sess->back_channel.maxops); | |
3371 | WRITE32(sess->back_channel.maxreqs); | |
3372 | WRITE32(sess->back_channel.nr_rdma_attrs); | |
3373 | ADJUST_ARGS(); | |
3374 | ||
3375 | if (sess->back_channel.nr_rdma_attrs) { | |
3376 | RESERVE_SPACE(4); | |
3377 | WRITE32(sess->back_channel.rdma_attrs); | |
3378 | ADJUST_ARGS(); | |
3379 | } | |
3380 | return 0; | |
2db134eb AA |
3381 | } |
3382 | ||
3383 | static __be32 | |
57b7b43b | 3384 | nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3385 | struct nfsd4_destroy_session *destroy_session) |
3386 | { | |
2db134eb AA |
3387 | return nfserr; |
3388 | } | |
3389 | ||
e1ca12df | 3390 | static __be32 |
d1829b38 | 3391 | nfsd4_encode_free_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
e1ca12df BS |
3392 | struct nfsd4_free_stateid *free_stateid) |
3393 | { | |
3394 | __be32 *p; | |
3395 | ||
3396 | if (nfserr) | |
3397 | return nfserr; | |
3398 | ||
3399 | RESERVE_SPACE(4); | |
d1829b38 | 3400 | *p++ = nfserr; |
e1ca12df BS |
3401 | ADJUST_ARGS(); |
3402 | return nfserr; | |
3403 | } | |
3404 | ||
c47d832b | 3405 | static __be32 |
57b7b43b | 3406 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3407 | struct nfsd4_sequence *seq) |
3408 | { | |
bc749ca4 | 3409 | __be32 *p; |
b85d4c01 BH |
3410 | |
3411 | if (nfserr) | |
3412 | return nfserr; | |
3413 | ||
3414 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20); | |
3415 | WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3416 | WRITE32(seq->seqid); | |
3417 | WRITE32(seq->slotid); | |
b7d7ca35 BF |
3418 | /* Note slotid's are numbered from zero: */ |
3419 | WRITE32(seq->maxslots - 1); /* sr_highest_slotid */ | |
3420 | WRITE32(seq->maxslots - 1); /* sr_target_highest_slotid */ | |
0d7bb719 | 3421 | WRITE32(seq->status_flags); |
b85d4c01 BH |
3422 | |
3423 | ADJUST_ARGS(); | |
557ce264 | 3424 | resp->cstate.datap = p; /* DRC cache data pointer */ |
b85d4c01 | 3425 | return 0; |
2db134eb AA |
3426 | } |
3427 | ||
2355c596 | 3428 | static __be32 |
57b7b43b | 3429 | nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
17456804 BS |
3430 | struct nfsd4_test_stateid *test_stateid) |
3431 | { | |
03cfb420 | 3432 | struct nfsd4_test_stateid_id *stateid, *next; |
17456804 | 3433 | __be32 *p; |
17456804 | 3434 | |
03cfb420 | 3435 | RESERVE_SPACE(4 + (4 * test_stateid->ts_num_ids)); |
17456804 | 3436 | *p++ = htonl(test_stateid->ts_num_ids); |
17456804 | 3437 | |
03cfb420 | 3438 | list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) { |
02f5fde5 | 3439 | *p++ = stateid->ts_id_status; |
17456804 | 3440 | } |
17456804 | 3441 | |
03cfb420 | 3442 | ADJUST_ARGS(); |
17456804 BS |
3443 | return nfserr; |
3444 | } | |
3445 | ||
695e12f8 BH |
3446 | static __be32 |
3447 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
3448 | { | |
3449 | return nfserr; | |
3450 | } | |
3451 | ||
3452 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
3453 | ||
2db134eb AA |
3454 | /* |
3455 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
3456 | * since we don't need to filter out obsolete ops as this is | |
3457 | * done in the decoding phase. | |
3458 | */ | |
695e12f8 | 3459 | static nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
3460 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
3461 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
3462 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
3463 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
3464 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
3465 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
3466 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
3467 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
3468 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
3469 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
3470 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
3471 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
3472 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
3473 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
3474 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3475 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 3476 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
3477 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
3478 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
3479 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3480 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3481 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3482 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
3483 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
3484 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
3485 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
3486 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
3487 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
3488 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3489 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3490 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
3491 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
3492 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
3493 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
3494 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3495 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
3496 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3497 | |
3498 | /* NFSv4.1 operations */ | |
3499 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
1d1bc8f2 | 3500 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
2db134eb AA |
3501 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
3502 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
3503 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session, | |
e1ca12df | 3504 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_free_stateid, |
2db134eb AA |
3505 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3506 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, | |
3507 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
3508 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
3509 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
3510 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
22b6dee8 | 3511 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
2db134eb AA |
3512 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
3513 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
17456804 | 3514 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, |
2db134eb AA |
3515 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3516 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
3517 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
695e12f8 BH |
3518 | }; |
3519 | ||
496c262c AA |
3520 | /* |
3521 | * Calculate the total amount of memory that the compound response has taken | |
58e7b33a | 3522 | * after encoding the current operation with pad. |
496c262c | 3523 | * |
58e7b33a MJ |
3524 | * pad: if operation is non-idempotent, pad was calculate by op_rsize_bop() |
3525 | * which was specified at nfsd4_operation, else pad is zero. | |
496c262c | 3526 | * |
58e7b33a | 3527 | * Compare this length to the session se_fmaxresp_sz and se_fmaxresp_cached. |
496c262c AA |
3528 | * |
3529 | * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so | |
3530 | * will be at least a page and will therefore hold the xdr_buf head. | |
3531 | */ | |
57b7b43b | 3532 | __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad) |
496c262c | 3533 | { |
496c262c | 3534 | struct xdr_buf *xb = &resp->rqstp->rq_res; |
496c262c AA |
3535 | struct nfsd4_session *session = NULL; |
3536 | struct nfsd4_slot *slot = resp->cstate.slot; | |
58e7b33a | 3537 | u32 length, tlen = 0; |
496c262c AA |
3538 | |
3539 | if (!nfsd4_has_session(&resp->cstate)) | |
58e7b33a | 3540 | return 0; |
496c262c AA |
3541 | |
3542 | session = resp->cstate.session; | |
58e7b33a MJ |
3543 | if (session == NULL) |
3544 | return 0; | |
496c262c AA |
3545 | |
3546 | if (xb->page_len == 0) { | |
3547 | length = (char *)resp->p - (char *)xb->head[0].iov_base + pad; | |
3548 | } else { | |
3549 | if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0) | |
3550 | tlen = (char *)resp->p - (char *)xb->tail[0].iov_base; | |
3551 | ||
3552 | length = xb->head[0].iov_len + xb->page_len + tlen + pad; | |
3553 | } | |
3554 | dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__, | |
3555 | length, xb->page_len, tlen, pad); | |
3556 | ||
58e7b33a MJ |
3557 | if (length > session->se_fchannel.maxresp_sz) |
3558 | return nfserr_rep_too_big; | |
3559 | ||
73e79482 | 3560 | if ((slot->sl_flags & NFSD4_SLOT_CACHETHIS) && |
58e7b33a | 3561 | length > session->se_fchannel.maxresp_cached) |
496c262c | 3562 | return nfserr_rep_too_big_to_cache; |
58e7b33a MJ |
3563 | |
3564 | return 0; | |
496c262c AA |
3565 | } |
3566 | ||
1da177e4 LT |
3567 | void |
3568 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3569 | { | |
2ebbc012 | 3570 | __be32 *statp; |
bc749ca4 | 3571 | __be32 *p; |
1da177e4 LT |
3572 | |
3573 | RESERVE_SPACE(8); | |
3574 | WRITE32(op->opnum); | |
3575 | statp = p++; /* to be backfilled at the end */ | |
3576 | ADJUST_ARGS(); | |
3577 | ||
695e12f8 BH |
3578 | if (op->opnum == OP_ILLEGAL) |
3579 | goto status; | |
3580 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || | |
3581 | !nfsd4_enc_ops[op->opnum]); | |
3582 | op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u); | |
496c262c | 3583 | /* nfsd4_check_drc_limit guarantees enough room for error status */ |
58e7b33a MJ |
3584 | if (!op->status) |
3585 | op->status = nfsd4_check_resp_size(resp, 0); | |
695e12f8 | 3586 | status: |
1da177e4 LT |
3587 | /* |
3588 | * Note: We write the status directly, instead of using WRITE32(), | |
3589 | * since it is already in network byte order. | |
3590 | */ | |
3591 | *statp = op->status; | |
3592 | } | |
3593 | ||
3594 | /* | |
3595 | * Encode the reply stored in the stateowner reply cache | |
3596 | * | |
3597 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
3598 | * previously sent already encoded operation. | |
3599 | * | |
3600 | * called with nfs4_lock_state() held | |
3601 | */ | |
3602 | void | |
3603 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3604 | { | |
bc749ca4 | 3605 | __be32 *p; |
1da177e4 LT |
3606 | struct nfs4_replay *rp = op->replay; |
3607 | ||
3608 | BUG_ON(!rp); | |
3609 | ||
3610 | RESERVE_SPACE(8); | |
3611 | WRITE32(op->opnum); | |
3612 | *p++ = rp->rp_status; /* already xdr'ed */ | |
3613 | ADJUST_ARGS(); | |
3614 | ||
3615 | RESERVE_SPACE(rp->rp_buflen); | |
3616 | WRITEMEM(rp->rp_buf, rp->rp_buflen); | |
3617 | ADJUST_ARGS(); | |
3618 | } | |
3619 | ||
1da177e4 | 3620 | int |
2ebbc012 | 3621 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
3622 | { |
3623 | return xdr_ressize_check(rqstp, p); | |
3624 | } | |
3625 | ||
3e98abff | 3626 | int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp) |
1da177e4 | 3627 | { |
3e98abff BF |
3628 | struct svc_rqst *rqstp = rq; |
3629 | struct nfsd4_compoundargs *args = rqstp->rq_argp; | |
3630 | ||
1da177e4 LT |
3631 | if (args->ops != args->iops) { |
3632 | kfree(args->ops); | |
3633 | args->ops = args->iops; | |
3634 | } | |
f99d49ad JJ |
3635 | kfree(args->tmpp); |
3636 | args->tmpp = NULL; | |
1da177e4 LT |
3637 | while (args->to_free) { |
3638 | struct tmpbuf *tb = args->to_free; | |
3639 | args->to_free = tb->next; | |
3640 | tb->release(tb->buf); | |
3641 | kfree(tb); | |
3642 | } | |
3e98abff | 3643 | return 1; |
1da177e4 LT |
3644 | } |
3645 | ||
3646 | int | |
2ebbc012 | 3647 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 3648 | { |
1da177e4 LT |
3649 | args->p = p; |
3650 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
3651 | args->pagelist = rqstp->rq_arg.pages; | |
3652 | args->pagelen = rqstp->rq_arg.page_len; | |
3653 | args->tmpp = NULL; | |
3654 | args->to_free = NULL; | |
3655 | args->ops = args->iops; | |
3656 | args->rqstp = rqstp; | |
3657 | ||
3e98abff | 3658 | return !nfsd4_decode_compound(args); |
1da177e4 LT |
3659 | } |
3660 | ||
3661 | int | |
2ebbc012 | 3662 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
3663 | { |
3664 | /* | |
3665 | * All that remains is to write the tag and operation count... | |
3666 | */ | |
557ce264 | 3667 | struct nfsd4_compound_state *cs = &resp->cstate; |
1da177e4 LT |
3668 | struct kvec *iov; |
3669 | p = resp->tagp; | |
3670 | *p++ = htonl(resp->taglen); | |
3671 | memcpy(p, resp->tag, resp->taglen); | |
3672 | p += XDR_QUADLEN(resp->taglen); | |
3673 | *p++ = htonl(resp->opcnt); | |
3674 | ||
3675 | if (rqstp->rq_res.page_len) | |
3676 | iov = &rqstp->rq_res.tail[0]; | |
3677 | else | |
3678 | iov = &rqstp->rq_res.head[0]; | |
3679 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; | |
3680 | BUG_ON(iov->iov_len > PAGE_SIZE); | |
26c0c75e BF |
3681 | if (nfsd4_has_session(cs)) { |
3682 | if (cs->status != nfserr_replay_cache) { | |
3683 | nfsd4_store_cache_entry(resp); | |
73e79482 | 3684 | cs->slot->sl_flags &= ~NFSD4_SLOT_INUSE; |
26c0c75e | 3685 | } |
d7682988 | 3686 | /* Renew the clientid on success and on replay */ |
221a6876 BF |
3687 | put_client_renew(cs->session->se_client); |
3688 | nfsd4_put_session(cs->session); | |
da3846a2 | 3689 | } |
1da177e4 LT |
3690 | return 1; |
3691 | } | |
3692 | ||
3693 | /* | |
3694 | * Local variables: | |
3695 | * c-basic-offset: 8 | |
3696 | * End: | |
3697 | */ |