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Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Server-side XDR for NFSv4 |
3 | * | |
4 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Kendrick Smith <kmsmith@umich.edu> | |
8 | * Andy Adamson <andros@umich.edu> | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or without | |
11 | * modification, are permitted provided that the following conditions | |
12 | * are met: | |
13 | * | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions and the following disclaimer. | |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in the | |
18 | * documentation and/or other materials provided with the distribution. | |
19 | * 3. Neither the name of the University nor the names of its | |
20 | * contributors may be used to endorse or promote products derived | |
21 | * from this software without specific prior written permission. | |
22 | * | |
23 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
24 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
25 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
26 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
30 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
31 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
32 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
33 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
34 | * | |
35 | * TODO: Neil Brown made the following observation: We currently | |
36 | * initially reserve NFSD_BUFSIZE space on the transmit queue and | |
37 | * never release any of that until the request is complete. | |
38 | * It would be good to calculate a new maximum response size while | |
39 | * decoding the COMPOUND, and call svc_reserve with this number | |
40 | * at the end of nfs4svc_decode_compoundargs. | |
41 | */ | |
42 | ||
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) { | |
28e05dd8 BF |
267 | int nace; |
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 BF |
466 | if (cbs->flavor == (u32)(-1)) { |
467 | cbs->uid = uid; | |
468 | cbs->gid = gid; | |
469 | cbs->flavor = RPC_AUTH_UNIX; | |
470 | } | |
acb2887e BF |
471 | break; |
472 | case RPC_AUTH_GSS: | |
473 | dprintk("RPC_AUTH_GSS callback secflavor " | |
474 | "not supported!\n"); | |
475 | READ_BUF(8); | |
476 | /* gcbp_service */ | |
477 | READ32(dummy); | |
478 | /* gcbp_handle_from_server */ | |
479 | READ32(dummy); | |
480 | READ_BUF(dummy); | |
481 | p += XDR_QUADLEN(dummy); | |
482 | /* gcbp_handle_from_client */ | |
483 | READ_BUF(4); | |
484 | READ32(dummy); | |
485 | READ_BUF(dummy); | |
486 | break; | |
487 | default: | |
488 | dprintk("Illegal callback secflavor\n"); | |
489 | return nfserr_inval; | |
490 | } | |
491 | } | |
492 | DECODE_TAIL; | |
493 | } | |
494 | ||
cb73a9f4 BF |
495 | static __be32 nfsd4_decode_backchannel_ctl(struct nfsd4_compoundargs *argp, struct nfsd4_backchannel_ctl *bc) |
496 | { | |
497 | DECODE_HEAD; | |
498 | ||
499 | READ_BUF(4); | |
500 | READ32(bc->bc_cb_program); | |
501 | nfsd4_decode_cb_sec(argp, &bc->bc_cb_sec); | |
502 | ||
503 | DECODE_TAIL; | |
504 | } | |
505 | ||
1d1bc8f2 BF |
506 | static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) |
507 | { | |
508 | DECODE_HEAD; | |
1d1bc8f2 BF |
509 | |
510 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 8); | |
511 | COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
512 | READ32(bcts->dir); | |
6ce2357f BS |
513 | /* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker |
514 | * could help us figure out we should be using it. */ | |
1d1bc8f2 BF |
515 | DECODE_TAIL; |
516 | } | |
517 | ||
b37ad28b | 518 | static __be32 |
1da177e4 LT |
519 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
520 | { | |
521 | DECODE_HEAD; | |
522 | ||
e31a1b66 | 523 | READ_BUF(4); |
1da177e4 | 524 | READ32(close->cl_seqid); |
e31a1b66 | 525 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
1da177e4 LT |
526 | |
527 | DECODE_TAIL; | |
528 | } | |
529 | ||
530 | ||
b37ad28b | 531 | static __be32 |
1da177e4 LT |
532 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
533 | { | |
534 | DECODE_HEAD; | |
535 | ||
536 | READ_BUF(12); | |
537 | READ64(commit->co_offset); | |
538 | READ32(commit->co_count); | |
539 | ||
540 | DECODE_TAIL; | |
541 | } | |
542 | ||
b37ad28b | 543 | static __be32 |
1da177e4 LT |
544 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
545 | { | |
546 | DECODE_HEAD; | |
547 | ||
548 | READ_BUF(4); | |
549 | READ32(create->cr_type); | |
550 | switch (create->cr_type) { | |
551 | case NF4LNK: | |
552 | READ_BUF(4); | |
553 | READ32(create->cr_linklen); | |
554 | READ_BUF(create->cr_linklen); | |
555 | SAVEMEM(create->cr_linkname, create->cr_linklen); | |
556 | break; | |
557 | case NF4BLK: | |
558 | case NF4CHR: | |
559 | READ_BUF(8); | |
560 | READ32(create->cr_specdata1); | |
561 | READ32(create->cr_specdata2); | |
562 | break; | |
563 | case NF4SOCK: | |
564 | case NF4FIFO: | |
565 | case NF4DIR: | |
566 | default: | |
567 | break; | |
568 | } | |
569 | ||
570 | READ_BUF(4); | |
571 | READ32(create->cr_namelen); | |
572 | READ_BUF(create->cr_namelen); | |
573 | SAVEMEM(create->cr_name, create->cr_namelen); | |
a36b1725 | 574 | if ((status = check_filename(create->cr_name, create->cr_namelen))) |
1da177e4 LT |
575 | return status; |
576 | ||
3c8e0316 YZ |
577 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
578 | &create->cr_acl); | |
c0d6fc8a | 579 | if (status) |
1da177e4 LT |
580 | goto out; |
581 | ||
582 | DECODE_TAIL; | |
583 | } | |
584 | ||
b37ad28b | 585 | static inline __be32 |
1da177e4 LT |
586 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
587 | { | |
e31a1b66 | 588 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
1da177e4 LT |
589 | } |
590 | ||
b37ad28b | 591 | static inline __be32 |
1da177e4 LT |
592 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
593 | { | |
594 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
595 | } | |
596 | ||
b37ad28b | 597 | static __be32 |
1da177e4 LT |
598 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
599 | { | |
600 | DECODE_HEAD; | |
601 | ||
602 | READ_BUF(4); | |
603 | READ32(link->li_namelen); | |
604 | READ_BUF(link->li_namelen); | |
605 | SAVEMEM(link->li_name, link->li_namelen); | |
a36b1725 | 606 | if ((status = check_filename(link->li_name, link->li_namelen))) |
1da177e4 LT |
607 | return status; |
608 | ||
609 | DECODE_TAIL; | |
610 | } | |
611 | ||
b37ad28b | 612 | static __be32 |
1da177e4 LT |
613 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
614 | { | |
615 | DECODE_HEAD; | |
616 | ||
1da177e4 LT |
617 | /* |
618 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
619 | */ | |
620 | READ_BUF(28); | |
621 | READ32(lock->lk_type); | |
622 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) | |
623 | goto xdr_error; | |
624 | READ32(lock->lk_reclaim); | |
625 | READ64(lock->lk_offset); | |
626 | READ64(lock->lk_length); | |
627 | READ32(lock->lk_is_new); | |
628 | ||
629 | if (lock->lk_is_new) { | |
e31a1b66 | 630 | READ_BUF(4); |
1da177e4 | 631 | READ32(lock->lk_new_open_seqid); |
e31a1b66 BH |
632 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
633 | if (status) | |
634 | return status; | |
635 | READ_BUF(8 + sizeof(clientid_t)); | |
1da177e4 LT |
636 | READ32(lock->lk_new_lock_seqid); |
637 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); | |
638 | READ32(lock->lk_new_owner.len); | |
639 | READ_BUF(lock->lk_new_owner.len); | |
640 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
641 | } else { | |
e31a1b66 BH |
642 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
643 | if (status) | |
644 | return status; | |
645 | READ_BUF(4); | |
1da177e4 LT |
646 | READ32(lock->lk_old_lock_seqid); |
647 | } | |
648 | ||
649 | DECODE_TAIL; | |
650 | } | |
651 | ||
b37ad28b | 652 | static __be32 |
1da177e4 LT |
653 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
654 | { | |
655 | DECODE_HEAD; | |
656 | ||
657 | READ_BUF(32); | |
658 | READ32(lockt->lt_type); | |
659 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) | |
660 | goto xdr_error; | |
661 | READ64(lockt->lt_offset); | |
662 | READ64(lockt->lt_length); | |
663 | COPYMEM(&lockt->lt_clientid, 8); | |
664 | READ32(lockt->lt_owner.len); | |
665 | READ_BUF(lockt->lt_owner.len); | |
666 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
667 | ||
668 | DECODE_TAIL; | |
669 | } | |
670 | ||
b37ad28b | 671 | static __be32 |
1da177e4 LT |
672 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
673 | { | |
674 | DECODE_HEAD; | |
675 | ||
e31a1b66 | 676 | READ_BUF(8); |
1da177e4 LT |
677 | READ32(locku->lu_type); |
678 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) | |
679 | goto xdr_error; | |
680 | READ32(locku->lu_seqid); | |
e31a1b66 BH |
681 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
682 | if (status) | |
683 | return status; | |
684 | READ_BUF(16); | |
1da177e4 LT |
685 | READ64(locku->lu_offset); |
686 | READ64(locku->lu_length); | |
687 | ||
688 | DECODE_TAIL; | |
689 | } | |
690 | ||
b37ad28b | 691 | static __be32 |
1da177e4 LT |
692 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
693 | { | |
694 | DECODE_HEAD; | |
695 | ||
696 | READ_BUF(4); | |
697 | READ32(lookup->lo_len); | |
698 | READ_BUF(lookup->lo_len); | |
699 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
a36b1725 | 700 | if ((status = check_filename(lookup->lo_name, lookup->lo_len))) |
1da177e4 LT |
701 | return status; |
702 | ||
703 | DECODE_TAIL; | |
704 | } | |
705 | ||
2c8bd7e0 | 706 | static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when) |
04f9e664 BF |
707 | { |
708 | __be32 *p; | |
709 | u32 w; | |
710 | ||
711 | READ_BUF(4); | |
712 | READ32(w); | |
2c8bd7e0 BH |
713 | *share_access = w & NFS4_SHARE_ACCESS_MASK; |
714 | *deleg_want = w & NFS4_SHARE_WANT_MASK; | |
715 | if (deleg_when) | |
716 | *deleg_when = w & NFS4_SHARE_WHEN_MASK; | |
717 | ||
04f9e664 BF |
718 | switch (w & NFS4_SHARE_ACCESS_MASK) { |
719 | case NFS4_SHARE_ACCESS_READ: | |
720 | case NFS4_SHARE_ACCESS_WRITE: | |
721 | case NFS4_SHARE_ACCESS_BOTH: | |
722 | break; | |
723 | default: | |
724 | return nfserr_bad_xdr; | |
725 | } | |
fc0d14fe | 726 | w &= ~NFS4_SHARE_ACCESS_MASK; |
04f9e664 BF |
727 | if (!w) |
728 | return nfs_ok; | |
729 | if (!argp->minorversion) | |
730 | return nfserr_bad_xdr; | |
731 | switch (w & NFS4_SHARE_WANT_MASK) { | |
732 | case NFS4_SHARE_WANT_NO_PREFERENCE: | |
733 | case NFS4_SHARE_WANT_READ_DELEG: | |
734 | case NFS4_SHARE_WANT_WRITE_DELEG: | |
735 | case NFS4_SHARE_WANT_ANY_DELEG: | |
736 | case NFS4_SHARE_WANT_NO_DELEG: | |
737 | case NFS4_SHARE_WANT_CANCEL: | |
738 | break; | |
739 | default: | |
740 | return nfserr_bad_xdr; | |
741 | } | |
92bac8c5 | 742 | w &= ~NFS4_SHARE_WANT_MASK; |
04f9e664 BF |
743 | if (!w) |
744 | return nfs_ok; | |
2c8bd7e0 BH |
745 | |
746 | if (!deleg_when) /* open_downgrade */ | |
747 | return nfserr_inval; | |
04f9e664 BF |
748 | switch (w) { |
749 | case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL: | |
750 | case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED: | |
c668fc6d BH |
751 | case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL | |
752 | NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED): | |
04f9e664 BF |
753 | return nfs_ok; |
754 | } | |
755 | xdr_error: | |
756 | return nfserr_bad_xdr; | |
757 | } | |
758 | ||
759 | static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x) | |
760 | { | |
761 | __be32 *p; | |
762 | ||
763 | READ_BUF(4); | |
764 | READ32(*x); | |
765 | /* Note: unlinke access bits, deny bits may be zero. */ | |
01cd4afa | 766 | if (*x & ~NFS4_SHARE_DENY_BOTH) |
04f9e664 BF |
767 | return nfserr_bad_xdr; |
768 | return nfs_ok; | |
769 | xdr_error: | |
770 | return nfserr_bad_xdr; | |
771 | } | |
772 | ||
a084daf5 BF |
773 | static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o) |
774 | { | |
775 | __be32 *p; | |
776 | ||
777 | READ_BUF(4); | |
778 | READ32(o->len); | |
779 | ||
780 | if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT) | |
781 | return nfserr_bad_xdr; | |
782 | ||
783 | READ_BUF(o->len); | |
784 | SAVEMEM(o->data, o->len); | |
785 | return nfs_ok; | |
786 | xdr_error: | |
787 | return nfserr_bad_xdr; | |
788 | } | |
789 | ||
b37ad28b | 790 | static __be32 |
1da177e4 LT |
791 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
792 | { | |
793 | DECODE_HEAD; | |
2c8bd7e0 | 794 | u32 dummy; |
1da177e4 LT |
795 | |
796 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
797 | open->op_iattr.ia_valid = 0; | |
fe0750e5 | 798 | open->op_openowner = NULL; |
1da177e4 LT |
799 | |
800 | /* seqid, share_access, share_deny, clientid, ownerlen */ | |
04f9e664 | 801 | READ_BUF(4); |
1da177e4 | 802 | READ32(open->op_seqid); |
2c8bd7e0 BH |
803 | /* decode, yet ignore deleg_when until supported */ |
804 | status = nfsd4_decode_share_access(argp, &open->op_share_access, | |
805 | &open->op_deleg_want, &dummy); | |
04f9e664 BF |
806 | if (status) |
807 | goto xdr_error; | |
808 | status = nfsd4_decode_share_deny(argp, &open->op_share_deny); | |
809 | if (status) | |
810 | goto xdr_error; | |
a084daf5 | 811 | READ_BUF(sizeof(clientid_t)); |
1da177e4 | 812 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); |
a084daf5 BF |
813 | status = nfsd4_decode_opaque(argp, &open->op_owner); |
814 | if (status) | |
815 | goto xdr_error; | |
816 | READ_BUF(4); | |
1da177e4 LT |
817 | READ32(open->op_create); |
818 | switch (open->op_create) { | |
819 | case NFS4_OPEN_NOCREATE: | |
820 | break; | |
821 | case NFS4_OPEN_CREATE: | |
822 | READ_BUF(4); | |
823 | READ32(open->op_createmode); | |
824 | switch (open->op_createmode) { | |
825 | case NFS4_CREATE_UNCHECKED: | |
826 | case NFS4_CREATE_GUARDED: | |
c0d6fc8a | 827 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
3c8e0316 | 828 | &open->op_iattr, &open->op_acl); |
c0d6fc8a | 829 | if (status) |
1da177e4 LT |
830 | goto out; |
831 | break; | |
832 | case NFS4_CREATE_EXCLUSIVE: | |
ab4684d1 CL |
833 | READ_BUF(NFS4_VERIFIER_SIZE); |
834 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 835 | break; |
79fb54ab BH |
836 | case NFS4_CREATE_EXCLUSIVE4_1: |
837 | if (argp->minorversion < 1) | |
838 | goto xdr_error; | |
ab4684d1 CL |
839 | READ_BUF(NFS4_VERIFIER_SIZE); |
840 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
79fb54ab | 841 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
3c8e0316 | 842 | &open->op_iattr, &open->op_acl); |
79fb54ab BH |
843 | if (status) |
844 | goto out; | |
845 | break; | |
1da177e4 LT |
846 | default: |
847 | goto xdr_error; | |
848 | } | |
849 | break; | |
850 | default: | |
851 | goto xdr_error; | |
852 | } | |
853 | ||
854 | /* open_claim */ | |
855 | READ_BUF(4); | |
856 | READ32(open->op_claim_type); | |
857 | switch (open->op_claim_type) { | |
858 | case NFS4_OPEN_CLAIM_NULL: | |
859 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
860 | READ_BUF(4); | |
861 | READ32(open->op_fname.len); | |
862 | READ_BUF(open->op_fname.len); | |
863 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 864 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
865 | return status; |
866 | break; | |
867 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
868 | READ_BUF(4); | |
869 | READ32(open->op_delegate_type); | |
870 | break; | |
871 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
e31a1b66 BH |
872 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
873 | if (status) | |
874 | return status; | |
875 | READ_BUF(4); | |
1da177e4 LT |
876 | READ32(open->op_fname.len); |
877 | READ_BUF(open->op_fname.len); | |
878 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 879 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
880 | return status; |
881 | break; | |
8b289b2c BF |
882 | case NFS4_OPEN_CLAIM_FH: |
883 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
884 | if (argp->minorversion < 1) | |
885 | goto xdr_error; | |
886 | /* void */ | |
887 | break; | |
888 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
889 | if (argp->minorversion < 1) | |
890 | goto xdr_error; | |
891 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); | |
892 | if (status) | |
893 | return status; | |
894 | break; | |
1da177e4 LT |
895 | default: |
896 | goto xdr_error; | |
897 | } | |
898 | ||
899 | DECODE_TAIL; | |
900 | } | |
901 | ||
b37ad28b | 902 | static __be32 |
1da177e4 LT |
903 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
904 | { | |
905 | DECODE_HEAD; | |
906 | ||
e31a1b66 BH |
907 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
908 | if (status) | |
909 | return status; | |
910 | READ_BUF(4); | |
1da177e4 LT |
911 | READ32(open_conf->oc_seqid); |
912 | ||
913 | DECODE_TAIL; | |
914 | } | |
915 | ||
b37ad28b | 916 | static __be32 |
1da177e4 LT |
917 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
918 | { | |
919 | DECODE_HEAD; | |
920 | ||
e31a1b66 BH |
921 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
922 | if (status) | |
923 | return status; | |
04f9e664 | 924 | READ_BUF(4); |
1da177e4 | 925 | READ32(open_down->od_seqid); |
2c8bd7e0 BH |
926 | status = nfsd4_decode_share_access(argp, &open_down->od_share_access, |
927 | &open_down->od_deleg_want, NULL); | |
04f9e664 BF |
928 | if (status) |
929 | return status; | |
930 | status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny); | |
931 | if (status) | |
932 | return status; | |
1da177e4 LT |
933 | DECODE_TAIL; |
934 | } | |
935 | ||
b37ad28b | 936 | static __be32 |
1da177e4 LT |
937 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
938 | { | |
939 | DECODE_HEAD; | |
940 | ||
941 | READ_BUF(4); | |
942 | READ32(putfh->pf_fhlen); | |
943 | if (putfh->pf_fhlen > NFS4_FHSIZE) | |
944 | goto xdr_error; | |
945 | READ_BUF(putfh->pf_fhlen); | |
946 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
947 | ||
948 | DECODE_TAIL; | |
949 | } | |
950 | ||
b37ad28b | 951 | static __be32 |
1da177e4 LT |
952 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
953 | { | |
954 | DECODE_HEAD; | |
955 | ||
e31a1b66 BH |
956 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
957 | if (status) | |
958 | return status; | |
959 | READ_BUF(12); | |
1da177e4 LT |
960 | READ64(read->rd_offset); |
961 | READ32(read->rd_length); | |
962 | ||
963 | DECODE_TAIL; | |
964 | } | |
965 | ||
b37ad28b | 966 | static __be32 |
1da177e4 LT |
967 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
968 | { | |
969 | DECODE_HEAD; | |
970 | ||
971 | READ_BUF(24); | |
972 | READ64(readdir->rd_cookie); | |
973 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); | |
974 | READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ | |
975 | READ32(readdir->rd_maxcount); | |
976 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) | |
977 | goto out; | |
978 | ||
979 | DECODE_TAIL; | |
980 | } | |
981 | ||
b37ad28b | 982 | static __be32 |
1da177e4 LT |
983 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
984 | { | |
985 | DECODE_HEAD; | |
986 | ||
987 | READ_BUF(4); | |
988 | READ32(remove->rm_namelen); | |
989 | READ_BUF(remove->rm_namelen); | |
990 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
a36b1725 | 991 | if ((status = check_filename(remove->rm_name, remove->rm_namelen))) |
1da177e4 LT |
992 | return status; |
993 | ||
994 | DECODE_TAIL; | |
995 | } | |
996 | ||
b37ad28b | 997 | static __be32 |
1da177e4 LT |
998 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
999 | { | |
1000 | DECODE_HEAD; | |
1001 | ||
1002 | READ_BUF(4); | |
1003 | READ32(rename->rn_snamelen); | |
1004 | READ_BUF(rename->rn_snamelen + 4); | |
1005 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); | |
1006 | READ32(rename->rn_tnamelen); | |
1007 | READ_BUF(rename->rn_tnamelen); | |
1008 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
a36b1725 | 1009 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen))) |
1da177e4 | 1010 | return status; |
a36b1725 | 1011 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen))) |
1da177e4 LT |
1012 | return status; |
1013 | ||
1014 | DECODE_TAIL; | |
1015 | } | |
1016 | ||
b37ad28b | 1017 | static __be32 |
1da177e4 LT |
1018 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
1019 | { | |
1020 | DECODE_HEAD; | |
1021 | ||
1022 | READ_BUF(sizeof(clientid_t)); | |
1023 | COPYMEM(clientid, sizeof(clientid_t)); | |
1024 | ||
1025 | DECODE_TAIL; | |
1026 | } | |
1027 | ||
dcb488a3 AA |
1028 | static __be32 |
1029 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
1030 | struct nfsd4_secinfo *secinfo) | |
1031 | { | |
1032 | DECODE_HEAD; | |
1033 | ||
1034 | READ_BUF(4); | |
1035 | READ32(secinfo->si_namelen); | |
1036 | READ_BUF(secinfo->si_namelen); | |
1037 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
a36b1725 | 1038 | status = check_filename(secinfo->si_name, secinfo->si_namelen); |
dcb488a3 AA |
1039 | if (status) |
1040 | return status; | |
1041 | DECODE_TAIL; | |
1042 | } | |
1043 | ||
04f4ad16 BF |
1044 | static __be32 |
1045 | nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, | |
1046 | struct nfsd4_secinfo_no_name *sin) | |
1047 | { | |
1048 | DECODE_HEAD; | |
1049 | ||
1050 | READ_BUF(4); | |
1051 | READ32(sin->sin_style); | |
1052 | DECODE_TAIL; | |
1053 | } | |
1054 | ||
b37ad28b | 1055 | static __be32 |
1da177e4 LT |
1056 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
1057 | { | |
e31a1b66 | 1058 | __be32 status; |
1da177e4 | 1059 | |
e31a1b66 BH |
1060 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
1061 | if (status) | |
1062 | return status; | |
3c8e0316 YZ |
1063 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
1064 | &setattr->sa_acl); | |
1da177e4 LT |
1065 | } |
1066 | ||
b37ad28b | 1067 | static __be32 |
1da177e4 LT |
1068 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
1069 | { | |
1070 | DECODE_HEAD; | |
1071 | ||
ab4684d1 CL |
1072 | READ_BUF(NFS4_VERIFIER_SIZE); |
1073 | COPYMEM(setclientid->se_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 1074 | |
a084daf5 BF |
1075 | status = nfsd4_decode_opaque(argp, &setclientid->se_name); |
1076 | if (status) | |
1077 | return nfserr_bad_xdr; | |
1078 | READ_BUF(8); | |
1da177e4 LT |
1079 | READ32(setclientid->se_callback_prog); |
1080 | READ32(setclientid->se_callback_netid_len); | |
1081 | ||
1082 | READ_BUF(setclientid->se_callback_netid_len + 4); | |
1083 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); | |
1084 | READ32(setclientid->se_callback_addr_len); | |
1085 | ||
1086 | READ_BUF(setclientid->se_callback_addr_len + 4); | |
1087 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); | |
1088 | READ32(setclientid->se_callback_ident); | |
1089 | ||
1090 | DECODE_TAIL; | |
1091 | } | |
1092 | ||
b37ad28b | 1093 | static __be32 |
1da177e4 LT |
1094 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
1095 | { | |
1096 | DECODE_HEAD; | |
1097 | ||
ab4684d1 | 1098 | READ_BUF(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 1099 | COPYMEM(&scd_c->sc_clientid, 8); |
ab4684d1 | 1100 | COPYMEM(&scd_c->sc_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
1101 | |
1102 | DECODE_TAIL; | |
1103 | } | |
1104 | ||
1105 | /* Also used for NVERIFY */ | |
b37ad28b | 1106 | static __be32 |
1da177e4 LT |
1107 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
1108 | { | |
1da177e4 LT |
1109 | DECODE_HEAD; |
1110 | ||
1111 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
1112 | goto out; | |
1113 | ||
1114 | /* For convenience's sake, we compare raw xdr'd attributes in | |
e5f95703 BF |
1115 | * nfsd4_proc_verify */ |
1116 | ||
1da177e4 LT |
1117 | READ_BUF(4); |
1118 | READ32(verify->ve_attrlen); | |
1119 | READ_BUF(verify->ve_attrlen); | |
1120 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
1121 | ||
1122 | DECODE_TAIL; | |
1123 | } | |
1124 | ||
b37ad28b | 1125 | static __be32 |
1da177e4 LT |
1126 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
1127 | { | |
1128 | int avail; | |
1da177e4 LT |
1129 | int len; |
1130 | DECODE_HEAD; | |
1131 | ||
e31a1b66 BH |
1132 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
1133 | if (status) | |
1134 | return status; | |
1135 | READ_BUF(16); | |
1da177e4 LT |
1136 | READ64(write->wr_offset); |
1137 | READ32(write->wr_stable_how); | |
1138 | if (write->wr_stable_how > 2) | |
1139 | goto xdr_error; | |
1140 | READ32(write->wr_buflen); | |
1141 | ||
1142 | /* Sorry .. no magic macros for this.. * | |
1143 | * READ_BUF(write->wr_buflen); | |
1144 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
1145 | */ | |
1146 | avail = (char*)argp->end - (char*)argp->p; | |
1147 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
1148 | dprintk("NFSD: xdr error (%s:%d)\n", |
1149 | __FILE__, __LINE__); | |
1da177e4 LT |
1150 | goto xdr_error; |
1151 | } | |
70cc7f75 BF |
1152 | write->wr_head.iov_base = p; |
1153 | write->wr_head.iov_len = avail; | |
5a80a54d | 1154 | WARN_ON(avail != (XDR_QUADLEN(avail) << 2)); |
70cc7f75 | 1155 | write->wr_pagelist = argp->pagelist; |
5a80a54d BF |
1156 | |
1157 | len = XDR_QUADLEN(write->wr_buflen) << 2; | |
1158 | if (len >= avail) { | |
1159 | int pages; | |
1160 | ||
1161 | len -= avail; | |
1162 | ||
1163 | pages = len >> PAGE_SHIFT; | |
1164 | argp->pagelist += pages; | |
1165 | argp->pagelen -= pages * PAGE_SIZE; | |
1166 | len -= pages * PAGE_SIZE; | |
1167 | ||
1168 | argp->p = (__be32 *)page_address(argp->pagelist[0]); | |
1169 | argp->end = argp->p + XDR_QUADLEN(PAGE_SIZE); | |
1da177e4 | 1170 | } |
5a80a54d | 1171 | argp->p += XDR_QUADLEN(len); |
1da177e4 LT |
1172 | |
1173 | DECODE_TAIL; | |
1174 | } | |
1175 | ||
b37ad28b | 1176 | static __be32 |
1da177e4 LT |
1177 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
1178 | { | |
1179 | DECODE_HEAD; | |
1180 | ||
1181 | READ_BUF(12); | |
1182 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
1183 | READ32(rlockowner->rl_owner.len); | |
1184 | READ_BUF(rlockowner->rl_owner.len); | |
1185 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
1186 | ||
60adfc50 AA |
1187 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1188 | return nfserr_inval; | |
1da177e4 LT |
1189 | DECODE_TAIL; |
1190 | } | |
1191 | ||
2db134eb AA |
1192 | static __be32 |
1193 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1194 | struct nfsd4_exchange_id *exid) |
2db134eb | 1195 | { |
5afa040b | 1196 | int dummy, tmp; |
0733d213 AA |
1197 | DECODE_HEAD; |
1198 | ||
1199 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1200 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1201 | ||
a084daf5 BF |
1202 | status = nfsd4_decode_opaque(argp, &exid->clname); |
1203 | if (status) | |
1204 | return nfserr_bad_xdr; | |
0733d213 AA |
1205 | |
1206 | READ_BUF(4); | |
1207 | READ32(exid->flags); | |
1208 | ||
1209 | /* Ignore state_protect4_a */ | |
1210 | READ_BUF(4); | |
1211 | READ32(exid->spa_how); | |
1212 | switch (exid->spa_how) { | |
1213 | case SP4_NONE: | |
1214 | break; | |
1215 | case SP4_MACH_CRED: | |
1216 | /* spo_must_enforce */ | |
1217 | READ_BUF(4); | |
1218 | READ32(dummy); | |
1219 | READ_BUF(dummy * 4); | |
1220 | p += dummy; | |
1221 | ||
1222 | /* spo_must_allow */ | |
1223 | READ_BUF(4); | |
1224 | READ32(dummy); | |
1225 | READ_BUF(dummy * 4); | |
1226 | p += dummy; | |
1227 | break; | |
1228 | case SP4_SSV: | |
1229 | /* ssp_ops */ | |
1230 | READ_BUF(4); | |
1231 | READ32(dummy); | |
1232 | READ_BUF(dummy * 4); | |
1233 | p += dummy; | |
1234 | ||
1235 | READ_BUF(4); | |
1236 | READ32(dummy); | |
1237 | READ_BUF(dummy * 4); | |
1238 | p += dummy; | |
1239 | ||
1240 | /* ssp_hash_algs<> */ | |
1241 | READ_BUF(4); | |
5afa040b MJ |
1242 | READ32(tmp); |
1243 | while (tmp--) { | |
1244 | READ_BUF(4); | |
1245 | READ32(dummy); | |
1246 | READ_BUF(dummy); | |
1247 | p += XDR_QUADLEN(dummy); | |
1248 | } | |
0733d213 AA |
1249 | |
1250 | /* ssp_encr_algs<> */ | |
1251 | READ_BUF(4); | |
5afa040b MJ |
1252 | READ32(tmp); |
1253 | while (tmp--) { | |
1254 | READ_BUF(4); | |
1255 | READ32(dummy); | |
1256 | READ_BUF(dummy); | |
1257 | p += XDR_QUADLEN(dummy); | |
1258 | } | |
0733d213 AA |
1259 | |
1260 | /* ssp_window and ssp_num_gss_handles */ | |
1261 | READ_BUF(8); | |
1262 | READ32(dummy); | |
1263 | READ32(dummy); | |
1264 | break; | |
1265 | default: | |
1266 | goto xdr_error; | |
1267 | } | |
1268 | ||
1269 | /* Ignore Implementation ID */ | |
1270 | READ_BUF(4); /* nfs_impl_id4 array length */ | |
1271 | READ32(dummy); | |
1272 | ||
1273 | if (dummy > 1) | |
1274 | goto xdr_error; | |
1275 | ||
1276 | if (dummy == 1) { | |
1277 | /* nii_domain */ | |
1278 | READ_BUF(4); | |
1279 | READ32(dummy); | |
1280 | READ_BUF(dummy); | |
1281 | p += XDR_QUADLEN(dummy); | |
1282 | ||
1283 | /* nii_name */ | |
1284 | READ_BUF(4); | |
1285 | READ32(dummy); | |
1286 | READ_BUF(dummy); | |
1287 | p += XDR_QUADLEN(dummy); | |
1288 | ||
1289 | /* nii_date */ | |
1290 | READ_BUF(12); | |
1291 | p += 3; | |
1292 | } | |
1293 | DECODE_TAIL; | |
2db134eb AA |
1294 | } |
1295 | ||
1296 | static __be32 | |
1297 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1298 | struct nfsd4_create_session *sess) | |
1299 | { | |
ec6b5d7b | 1300 | DECODE_HEAD; |
ec6b5d7b | 1301 | u32 dummy; |
ec6b5d7b AA |
1302 | |
1303 | READ_BUF(16); | |
1304 | COPYMEM(&sess->clientid, 8); | |
1305 | READ32(sess->seqid); | |
1306 | READ32(sess->flags); | |
1307 | ||
1308 | /* Fore channel attrs */ | |
1309 | READ_BUF(28); | |
1310 | READ32(dummy); /* headerpadsz is always 0 */ | |
1311 | READ32(sess->fore_channel.maxreq_sz); | |
1312 | READ32(sess->fore_channel.maxresp_sz); | |
1313 | READ32(sess->fore_channel.maxresp_cached); | |
1314 | READ32(sess->fore_channel.maxops); | |
1315 | READ32(sess->fore_channel.maxreqs); | |
1316 | READ32(sess->fore_channel.nr_rdma_attrs); | |
1317 | if (sess->fore_channel.nr_rdma_attrs == 1) { | |
1318 | READ_BUF(4); | |
1319 | READ32(sess->fore_channel.rdma_attrs); | |
1320 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { | |
1321 | dprintk("Too many fore channel attr bitmaps!\n"); | |
1322 | goto xdr_error; | |
1323 | } | |
1324 | ||
1325 | /* Back channel attrs */ | |
1326 | READ_BUF(28); | |
1327 | READ32(dummy); /* headerpadsz is always 0 */ | |
1328 | READ32(sess->back_channel.maxreq_sz); | |
1329 | READ32(sess->back_channel.maxresp_sz); | |
1330 | READ32(sess->back_channel.maxresp_cached); | |
1331 | READ32(sess->back_channel.maxops); | |
1332 | READ32(sess->back_channel.maxreqs); | |
1333 | READ32(sess->back_channel.nr_rdma_attrs); | |
1334 | if (sess->back_channel.nr_rdma_attrs == 1) { | |
1335 | READ_BUF(4); | |
1336 | READ32(sess->back_channel.rdma_attrs); | |
1337 | } else if (sess->back_channel.nr_rdma_attrs > 1) { | |
1338 | dprintk("Too many back channel attr bitmaps!\n"); | |
1339 | goto xdr_error; | |
1340 | } | |
1341 | ||
acb2887e | 1342 | READ_BUF(4); |
ec6b5d7b | 1343 | READ32(sess->callback_prog); |
acb2887e | 1344 | nfsd4_decode_cb_sec(argp, &sess->cb_sec); |
ec6b5d7b | 1345 | DECODE_TAIL; |
2db134eb AA |
1346 | } |
1347 | ||
1348 | static __be32 | |
1349 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, | |
1350 | struct nfsd4_destroy_session *destroy_session) | |
1351 | { | |
e10e0cfc BH |
1352 | DECODE_HEAD; |
1353 | READ_BUF(NFS4_MAX_SESSIONID_LEN); | |
1354 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1355 | ||
1356 | DECODE_TAIL; | |
2db134eb AA |
1357 | } |
1358 | ||
e1ca12df BS |
1359 | static __be32 |
1360 | nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp, | |
1361 | struct nfsd4_free_stateid *free_stateid) | |
1362 | { | |
1363 | DECODE_HEAD; | |
1364 | ||
1365 | READ_BUF(sizeof(stateid_t)); | |
1366 | READ32(free_stateid->fr_stateid.si_generation); | |
1367 | COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
1368 | ||
1369 | DECODE_TAIL; | |
1370 | } | |
1371 | ||
2db134eb AA |
1372 | static __be32 |
1373 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, | |
1374 | struct nfsd4_sequence *seq) | |
1375 | { | |
b85d4c01 BH |
1376 | DECODE_HEAD; |
1377 | ||
1378 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); | |
1379 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1380 | READ32(seq->seqid); | |
1381 | READ32(seq->slotid); | |
1382 | READ32(seq->maxslots); | |
1383 | READ32(seq->cachethis); | |
1384 | ||
1385 | DECODE_TAIL; | |
2db134eb AA |
1386 | } |
1387 | ||
17456804 BS |
1388 | static __be32 |
1389 | nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid) | |
1390 | { | |
17456804 | 1391 | int i; |
03cfb420 BS |
1392 | __be32 *p, status; |
1393 | struct nfsd4_test_stateid_id *stateid; | |
17456804 BS |
1394 | |
1395 | READ_BUF(4); | |
1396 | test_stateid->ts_num_ids = ntohl(*p++); | |
1397 | ||
03cfb420 | 1398 | INIT_LIST_HEAD(&test_stateid->ts_stateid_list); |
17456804 BS |
1399 | |
1400 | for (i = 0; i < test_stateid->ts_num_ids; i++) { | |
03cfb420 BS |
1401 | stateid = kmalloc(sizeof(struct nfsd4_test_stateid_id), GFP_KERNEL); |
1402 | if (!stateid) { | |
afcf6792 | 1403 | status = nfserrno(-ENOMEM); |
03cfb420 BS |
1404 | goto out; |
1405 | } | |
1406 | ||
1407 | defer_free(argp, kfree, stateid); | |
1408 | INIT_LIST_HEAD(&stateid->ts_id_list); | |
1409 | list_add_tail(&stateid->ts_id_list, &test_stateid->ts_stateid_list); | |
1410 | ||
1411 | status = nfsd4_decode_stateid(argp, &stateid->ts_id_stateid); | |
17456804 | 1412 | if (status) |
03cfb420 | 1413 | goto out; |
17456804 BS |
1414 | } |
1415 | ||
1416 | status = 0; | |
1417 | out: | |
1418 | return status; | |
1419 | xdr_error: | |
1420 | dprintk("NFSD: xdr error (%s:%d)\n", __FILE__, __LINE__); | |
1421 | status = nfserr_bad_xdr; | |
1422 | goto out; | |
1423 | } | |
1424 | ||
345c2842 MJ |
1425 | static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_clientid *dc) |
1426 | { | |
1427 | DECODE_HEAD; | |
1428 | ||
1429 | READ_BUF(8); | |
1430 | COPYMEM(&dc->clientid, 8); | |
1431 | ||
1432 | DECODE_TAIL; | |
1433 | } | |
1434 | ||
4dc6ec00 BF |
1435 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) |
1436 | { | |
1437 | DECODE_HEAD; | |
1438 | ||
1439 | READ_BUF(4); | |
1440 | READ32(rc->rca_one_fs); | |
1441 | ||
1442 | DECODE_TAIL; | |
1443 | } | |
1444 | ||
347e0ad9 BH |
1445 | static __be32 |
1446 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1447 | { | |
1448 | return nfs_ok; | |
1449 | } | |
1450 | ||
3c375c6f BH |
1451 | static __be32 |
1452 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1453 | { | |
1e685ec2 | 1454 | return nfserr_notsupp; |
3c375c6f BH |
1455 | } |
1456 | ||
347e0ad9 BH |
1457 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1458 | ||
1459 | static nfsd4_dec nfsd4_dec_ops[] = { | |
ad1060c8 BF |
1460 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1461 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1462 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1463 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1464 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1465 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1466 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1467 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1468 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1469 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1470 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1471 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1472 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1473 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1474 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1475 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1476 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1477 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1478 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1479 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
a1c8c4d1 | 1480 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_noop, |
ad1060c8 BF |
1481 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1482 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1483 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1484 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1485 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1486 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1487 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1488 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1489 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1490 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1491 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1492 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1493 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1494 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1495 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1496 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
347e0ad9 BH |
1497 | }; |
1498 | ||
2db134eb | 1499 | static nfsd4_dec nfsd41_dec_ops[] = { |
9064caae RD |
1500 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1501 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1502 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1503 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1504 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1505 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1506 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1507 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1508 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1509 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1510 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1511 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1512 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1513 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1514 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1515 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1516 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1517 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1518 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1519 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
1520 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1521 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1522 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1523 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1524 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1525 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1526 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1527 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1528 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1529 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1530 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1531 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1532 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1533 | [OP_SETCLIENTID_CONFIRM]= (nfsd4_dec)nfsd4_decode_notsupp, | |
1534 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1535 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1536 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_notsupp, | |
2db134eb AA |
1537 | |
1538 | /* new operations for NFSv4.1 */ | |
cb73a9f4 | 1539 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_backchannel_ctl, |
1d1bc8f2 | 1540 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
9064caae RD |
1541 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
1542 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
1543 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
e1ca12df | 1544 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, |
9064caae RD |
1545 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
1546 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1547 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1548 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1549 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1550 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
04f4ad16 | 1551 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
9064caae RD |
1552 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
1553 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
17456804 | 1554 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid, |
9064caae | 1555 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
345c2842 | 1556 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, |
4dc6ec00 | 1557 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
2db134eb AA |
1558 | }; |
1559 | ||
f2feb96b BH |
1560 | struct nfsd4_minorversion_ops { |
1561 | nfsd4_dec *decoders; | |
1562 | int nops; | |
1563 | }; | |
1564 | ||
1565 | static struct nfsd4_minorversion_ops nfsd4_minorversion[] = { | |
ad1060c8 | 1566 | [0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) }, |
2db134eb | 1567 | [1] = { nfsd41_dec_ops, ARRAY_SIZE(nfsd41_dec_ops) }, |
f2feb96b BH |
1568 | }; |
1569 | ||
b37ad28b | 1570 | static __be32 |
1da177e4 LT |
1571 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1572 | { | |
1573 | DECODE_HEAD; | |
1574 | struct nfsd4_op *op; | |
f2feb96b | 1575 | struct nfsd4_minorversion_ops *ops; |
1091006c | 1576 | bool cachethis = false; |
1da177e4 LT |
1577 | int i; |
1578 | ||
1da177e4 LT |
1579 | READ_BUF(4); |
1580 | READ32(argp->taglen); | |
1581 | READ_BUF(argp->taglen + 8); | |
1582 | SAVEMEM(argp->tag, argp->taglen); | |
1583 | READ32(argp->minorversion); | |
1584 | READ32(argp->opcnt); | |
1585 | ||
1586 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1587 | goto xdr_error; | |
1588 | if (argp->opcnt > 100) | |
1589 | goto xdr_error; | |
1590 | ||
e8c96f8c | 1591 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
1da177e4 LT |
1592 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1593 | if (!argp->ops) { | |
1594 | argp->ops = argp->iops; | |
817cb9d4 | 1595 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1596 | goto xdr_error; |
1597 | } | |
1598 | } | |
1599 | ||
f2feb96b | 1600 | if (argp->minorversion >= ARRAY_SIZE(nfsd4_minorversion)) |
30cff1ff BH |
1601 | argp->opcnt = 0; |
1602 | ||
f2feb96b | 1603 | ops = &nfsd4_minorversion[argp->minorversion]; |
1da177e4 LT |
1604 | for (i = 0; i < argp->opcnt; i++) { |
1605 | op = &argp->ops[i]; | |
1606 | op->replay = NULL; | |
1607 | ||
8a61b18c BF |
1608 | READ_BUF(4); |
1609 | READ32(op->opnum); | |
1da177e4 | 1610 | |
de3cab79 | 1611 | if (op->opnum >= FIRST_NFS4_OP && op->opnum <= LAST_NFS4_OP) |
f2feb96b | 1612 | op->status = ops->decoders[op->opnum](argp, &op->u); |
347e0ad9 | 1613 | else { |
1da177e4 LT |
1614 | op->opnum = OP_ILLEGAL; |
1615 | op->status = nfserr_op_illegal; | |
1da177e4 LT |
1616 | } |
1617 | ||
1618 | if (op->status) { | |
1619 | argp->opcnt = i+1; | |
1620 | break; | |
1621 | } | |
1091006c BF |
1622 | /* |
1623 | * We'll try to cache the result in the DRC if any one | |
1624 | * op in the compound wants to be cached: | |
1625 | */ | |
1626 | cachethis |= nfsd4_cache_this_op(op); | |
1da177e4 | 1627 | } |
1091006c BF |
1628 | /* Sessions make the DRC unnecessary: */ |
1629 | if (argp->minorversion) | |
1630 | cachethis = false; | |
1631 | argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; | |
1da177e4 LT |
1632 | |
1633 | DECODE_TAIL; | |
1634 | } | |
1da177e4 | 1635 | |
1da177e4 LT |
1636 | #define WRITE32(n) *p++ = htonl(n) |
1637 | #define WRITE64(n) do { \ | |
1638 | *p++ = htonl((u32)((n) >> 32)); \ | |
1639 | *p++ = htonl((u32)(n)); \ | |
1640 | } while (0) | |
5108b276 | 1641 | #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \ |
1da177e4 LT |
1642 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ |
1643 | memcpy(p, ptr, nbytes); \ | |
1644 | p += XDR_QUADLEN(nbytes); \ | |
5108b276 | 1645 | }} while (0) |
c654b8a9 BF |
1646 | |
1647 | static void write32(__be32 **p, u32 n) | |
1648 | { | |
45eaa1c1 | 1649 | *(*p)++ = htonl(n); |
c654b8a9 BF |
1650 | } |
1651 | ||
1652 | static void write64(__be32 **p, u64 n) | |
1653 | { | |
45eaa1c1 | 1654 | write32(p, (n >> 32)); |
c654b8a9 BF |
1655 | write32(p, (u32)n); |
1656 | } | |
1657 | ||
1658 | static void write_change(__be32 **p, struct kstat *stat, struct inode *inode) | |
1659 | { | |
1660 | if (IS_I_VERSION(inode)) { | |
1661 | write64(p, inode->i_version); | |
1662 | } else { | |
1663 | write32(p, stat->ctime.tv_sec); | |
1664 | write32(p, stat->ctime.tv_nsec); | |
1665 | } | |
1666 | } | |
1667 | ||
1668 | static void write_cinfo(__be32 **p, struct nfsd4_change_info *c) | |
1669 | { | |
1670 | write32(p, c->atomic); | |
1671 | if (c->change_supported) { | |
1672 | write64(p, c->before_change); | |
1673 | write64(p, c->after_change); | |
1674 | } else { | |
1675 | write32(p, c->before_ctime_sec); | |
1676 | write32(p, c->before_ctime_nsec); | |
1677 | write32(p, c->after_ctime_sec); | |
1678 | write32(p, c->after_ctime_nsec); | |
1679 | } | |
1680 | } | |
1da177e4 LT |
1681 | |
1682 | #define RESERVE_SPACE(nbytes) do { \ | |
1683 | p = resp->p; \ | |
1684 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ | |
1685 | } while (0) | |
1686 | #define ADJUST_ARGS() resp->p = p | |
1687 | ||
1688 | /* | |
1689 | * Header routine to setup seqid operation replay cache | |
1690 | */ | |
1691 | #define ENCODE_SEQID_OP_HEAD \ | |
2ebbc012 | 1692 | __be32 *save; \ |
1da177e4 LT |
1693 | \ |
1694 | save = resp->p; | |
1695 | ||
1696 | /* | |
7fb64cee N |
1697 | * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This |
1698 | * is where sequence id's are incremented, and the replay cache is filled. | |
1699 | * Note that we increment sequence id's here, at the last moment, so we're sure | |
1700 | * we know whether the error to be returned is a sequence id mutating error. | |
1da177e4 LT |
1701 | */ |
1702 | ||
f3e42237 BF |
1703 | static void encode_seqid_op_tail(struct nfsd4_compoundres *resp, __be32 *save, __be32 nfserr) |
1704 | { | |
1705 | struct nfs4_stateowner *stateowner = resp->cstate.replay_owner; | |
1706 | ||
1707 | if (seqid_mutating_err(ntohl(nfserr)) && stateowner) { | |
1708 | stateowner->so_seqid++; | |
1709 | stateowner->so_replay.rp_status = nfserr; | |
1710 | stateowner->so_replay.rp_buflen = | |
1711 | (char *)resp->p - (char *)save; | |
1712 | memcpy(stateowner->so_replay.rp_buf, save, | |
1713 | stateowner->so_replay.rp_buflen); | |
38c387b5 | 1714 | nfsd4_purge_closed_stateid(stateowner); |
f3e42237 BF |
1715 | } |
1716 | } | |
1da177e4 | 1717 | |
81c3f413 | 1718 | /* Encode as an array of strings the string given with components |
e7a0444a | 1719 | * separated @sep, escaped with esc_enter and esc_exit. |
81c3f413 | 1720 | */ |
e7a0444a WAA |
1721 | static __be32 nfsd4_encode_components_esc(char sep, char *components, |
1722 | __be32 **pp, int *buflen, | |
1723 | char esc_enter, char esc_exit) | |
81c3f413 | 1724 | { |
2ebbc012 AV |
1725 | __be32 *p = *pp; |
1726 | __be32 *countp = p; | |
81c3f413 | 1727 | int strlen, count=0; |
e7a0444a | 1728 | char *str, *end, *next; |
81c3f413 BF |
1729 | |
1730 | dprintk("nfsd4_encode_components(%s)\n", components); | |
1731 | if ((*buflen -= 4) < 0) | |
1732 | return nfserr_resource; | |
1733 | WRITE32(0); /* We will fill this in with @count later */ | |
1734 | end = str = components; | |
1735 | while (*end) { | |
e7a0444a WAA |
1736 | bool found_esc = false; |
1737 | ||
1738 | /* try to parse as esc_start, ..., esc_end, sep */ | |
1739 | if (*str == esc_enter) { | |
1740 | for (; *end && (*end != esc_exit); end++) | |
1741 | /* find esc_exit or end of string */; | |
1742 | next = end + 1; | |
1743 | if (*end && (!*next || *next == sep)) { | |
1744 | str++; | |
1745 | found_esc = true; | |
1746 | } | |
1747 | } | |
1748 | ||
1749 | if (!found_esc) | |
1750 | for (; *end && (*end != sep); end++) | |
1751 | /* find sep or end of string */; | |
1752 | ||
81c3f413 BF |
1753 | strlen = end - str; |
1754 | if (strlen) { | |
1755 | if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0) | |
1756 | return nfserr_resource; | |
1757 | WRITE32(strlen); | |
1758 | WRITEMEM(str, strlen); | |
1759 | count++; | |
1760 | } | |
1761 | else | |
1762 | end++; | |
1763 | str = end; | |
1764 | } | |
1765 | *pp = p; | |
1766 | p = countp; | |
1767 | WRITE32(count); | |
1768 | return 0; | |
1769 | } | |
1770 | ||
e7a0444a WAA |
1771 | /* Encode as an array of strings the string given with components |
1772 | * separated @sep. | |
1773 | */ | |
1774 | static __be32 nfsd4_encode_components(char sep, char *components, | |
1775 | __be32 **pp, int *buflen) | |
1776 | { | |
1777 | return nfsd4_encode_components_esc(sep, components, pp, buflen, 0, 0); | |
1778 | } | |
1779 | ||
81c3f413 BF |
1780 | /* |
1781 | * encode a location element of a fs_locations structure | |
1782 | */ | |
b37ad28b | 1783 | static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location, |
2ebbc012 | 1784 | __be32 **pp, int *buflen) |
81c3f413 | 1785 | { |
b37ad28b | 1786 | __be32 status; |
2ebbc012 | 1787 | __be32 *p = *pp; |
81c3f413 | 1788 | |
e7a0444a WAA |
1789 | status = nfsd4_encode_components_esc(':', location->hosts, &p, buflen, |
1790 | '[', ']'); | |
81c3f413 BF |
1791 | if (status) |
1792 | return status; | |
1793 | status = nfsd4_encode_components('/', location->path, &p, buflen); | |
1794 | if (status) | |
1795 | return status; | |
1796 | *pp = p; | |
1797 | return 0; | |
1798 | } | |
1799 | ||
1800 | /* | |
ed748aac | 1801 | * Encode a path in RFC3530 'pathname4' format |
81c3f413 | 1802 | */ |
ed748aac TM |
1803 | static __be32 nfsd4_encode_path(const struct path *root, |
1804 | const struct path *path, __be32 **pp, int *buflen) | |
81c3f413 | 1805 | { |
ed748aac TM |
1806 | struct path cur = { |
1807 | .mnt = path->mnt, | |
1808 | .dentry = path->dentry, | |
1809 | }; | |
1810 | __be32 *p = *pp; | |
1811 | struct dentry **components = NULL; | |
1812 | unsigned int ncomponents = 0; | |
1813 | __be32 err = nfserr_jukebox; | |
81c3f413 | 1814 | |
ed748aac | 1815 | dprintk("nfsd4_encode_components("); |
81c3f413 | 1816 | |
ed748aac TM |
1817 | path_get(&cur); |
1818 | /* First walk the path up to the nfsd root, and store the | |
1819 | * dentries/path components in an array. | |
1820 | */ | |
1821 | for (;;) { | |
1822 | if (cur.dentry == root->dentry && cur.mnt == root->mnt) | |
1823 | break; | |
1824 | if (cur.dentry == cur.mnt->mnt_root) { | |
1825 | if (follow_up(&cur)) | |
1826 | continue; | |
1827 | goto out_free; | |
1828 | } | |
1829 | if ((ncomponents & 15) == 0) { | |
1830 | struct dentry **new; | |
1831 | new = krealloc(components, | |
1832 | sizeof(*new) * (ncomponents + 16), | |
1833 | GFP_KERNEL); | |
1834 | if (!new) | |
1835 | goto out_free; | |
1836 | components = new; | |
1837 | } | |
1838 | components[ncomponents++] = cur.dentry; | |
1839 | cur.dentry = dget_parent(cur.dentry); | |
1840 | } | |
81c3f413 | 1841 | |
ed748aac TM |
1842 | *buflen -= 4; |
1843 | if (*buflen < 0) | |
1844 | goto out_free; | |
1845 | WRITE32(ncomponents); | |
1846 | ||
1847 | while (ncomponents) { | |
1848 | struct dentry *dentry = components[ncomponents - 1]; | |
1849 | unsigned int len = dentry->d_name.len; | |
1850 | ||
1851 | *buflen -= 4 + (XDR_QUADLEN(len) << 2); | |
1852 | if (*buflen < 0) | |
1853 | goto out_free; | |
1854 | WRITE32(len); | |
1855 | WRITEMEM(dentry->d_name.name, len); | |
1856 | dprintk("/%s", dentry->d_name.name); | |
1857 | dput(dentry); | |
1858 | ncomponents--; | |
81c3f413 | 1859 | } |
ed748aac TM |
1860 | |
1861 | *pp = p; | |
1862 | err = 0; | |
1863 | out_free: | |
1864 | dprintk(")\n"); | |
1865 | while (ncomponents) | |
1866 | dput(components[--ncomponents]); | |
1867 | kfree(components); | |
1868 | path_put(&cur); | |
1869 | return err; | |
1870 | } | |
1871 | ||
1872 | static __be32 nfsd4_encode_fsloc_fsroot(struct svc_rqst *rqstp, | |
1873 | const struct path *path, __be32 **pp, int *buflen) | |
1874 | { | |
1875 | struct svc_export *exp_ps; | |
1876 | __be32 res; | |
1877 | ||
1878 | exp_ps = rqst_find_fsidzero_export(rqstp); | |
1879 | if (IS_ERR(exp_ps)) | |
1880 | return nfserrno(PTR_ERR(exp_ps)); | |
1881 | res = nfsd4_encode_path(&exp_ps->ex_path, path, pp, buflen); | |
1882 | exp_put(exp_ps); | |
1883 | return res; | |
81c3f413 BF |
1884 | } |
1885 | ||
1886 | /* | |
1887 | * encode a fs_locations structure | |
1888 | */ | |
b37ad28b | 1889 | static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp, |
81c3f413 | 1890 | struct svc_export *exp, |
2ebbc012 | 1891 | __be32 **pp, int *buflen) |
81c3f413 | 1892 | { |
b37ad28b | 1893 | __be32 status; |
cc45f017 | 1894 | int i; |
2ebbc012 | 1895 | __be32 *p = *pp; |
81c3f413 | 1896 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
81c3f413 | 1897 | |
ed748aac | 1898 | status = nfsd4_encode_fsloc_fsroot(rqstp, &exp->ex_path, &p, buflen); |
81c3f413 BF |
1899 | if (status) |
1900 | return status; | |
1901 | if ((*buflen -= 4) < 0) | |
1902 | return nfserr_resource; | |
1903 | WRITE32(fslocs->locations_count); | |
1904 | for (i=0; i<fslocs->locations_count; i++) { | |
1905 | status = nfsd4_encode_fs_location4(&fslocs->locations[i], | |
1906 | &p, buflen); | |
1907 | if (status) | |
1908 | return status; | |
1909 | } | |
1910 | *pp = p; | |
1911 | return 0; | |
1912 | } | |
1da177e4 | 1913 | |
3d2544b1 BF |
1914 | static u32 nfs4_file_type(umode_t mode) |
1915 | { | |
1916 | switch (mode & S_IFMT) { | |
1917 | case S_IFIFO: return NF4FIFO; | |
1918 | case S_IFCHR: return NF4CHR; | |
1919 | case S_IFDIR: return NF4DIR; | |
1920 | case S_IFBLK: return NF4BLK; | |
1921 | case S_IFLNK: return NF4LNK; | |
1922 | case S_IFREG: return NF4REG; | |
1923 | case S_IFSOCK: return NF4SOCK; | |
1924 | default: return NF4BAD; | |
1925 | }; | |
1926 | } | |
1da177e4 | 1927 | |
b37ad28b | 1928 | static __be32 |
ab8e4aee | 1929 | nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, kuid_t uid, kgid_t gid, |
2ebbc012 | 1930 | __be32 **p, int *buflen) |
1da177e4 LT |
1931 | { |
1932 | int status; | |
1933 | ||
1934 | if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) | |
1935 | return nfserr_resource; | |
1936 | if (whotype != NFS4_ACL_WHO_NAMED) | |
1937 | status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); | |
ab8e4aee EB |
1938 | else if (gid_valid(gid)) |
1939 | status = nfsd_map_gid_to_name(rqstp, gid, (u8 *)(*p + 1)); | |
1da177e4 | 1940 | else |
ab8e4aee | 1941 | status = nfsd_map_uid_to_name(rqstp, uid, (u8 *)(*p + 1)); |
1da177e4 LT |
1942 | if (status < 0) |
1943 | return nfserrno(status); | |
1944 | *p = xdr_encode_opaque(*p, NULL, status); | |
1945 | *buflen -= (XDR_QUADLEN(status) << 2) + 4; | |
1946 | BUG_ON(*buflen < 0); | |
1947 | return 0; | |
1948 | } | |
1949 | ||
b37ad28b | 1950 | static inline __be32 |
ab8e4aee | 1951 | nfsd4_encode_user(struct svc_rqst *rqstp, kuid_t user, __be32 **p, int *buflen) |
1da177e4 | 1952 | { |
ab8e4aee EB |
1953 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, user, INVALID_GID, |
1954 | p, buflen); | |
1da177e4 LT |
1955 | } |
1956 | ||
b37ad28b | 1957 | static inline __be32 |
ab8e4aee | 1958 | nfsd4_encode_group(struct svc_rqst *rqstp, kgid_t group, __be32 **p, int *buflen) |
1da177e4 | 1959 | { |
ab8e4aee EB |
1960 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, INVALID_UID, group, |
1961 | p, buflen); | |
1da177e4 LT |
1962 | } |
1963 | ||
b37ad28b | 1964 | static inline __be32 |
ab8e4aee | 1965 | nfsd4_encode_aclname(struct svc_rqst *rqstp, struct nfs4_ace *ace, |
2ebbc012 | 1966 | __be32 **p, int *buflen) |
1da177e4 | 1967 | { |
ab8e4aee EB |
1968 | kuid_t uid = INVALID_UID; |
1969 | kgid_t gid = INVALID_GID; | |
1970 | ||
1971 | if (ace->whotype == NFS4_ACL_WHO_NAMED) { | |
1972 | if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) | |
1973 | gid = ace->who_gid; | |
1974 | else | |
1975 | uid = ace->who_uid; | |
1976 | } | |
1977 | return nfsd4_encode_name(rqstp, ace->whotype, uid, gid, p, buflen); | |
1da177e4 LT |
1978 | } |
1979 | ||
42ca0993 BF |
1980 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
1981 | FATTR4_WORD0_RDATTR_ERROR) | |
1982 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
1983 | ||
b37ad28b | 1984 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
42ca0993 BF |
1985 | { |
1986 | /* As per referral draft: */ | |
1987 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
1988 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
1989 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
1990 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
1991 | *rdattr_err = NFSERR_MOVED; | |
1992 | else | |
1993 | return nfserr_moved; | |
1994 | } | |
1995 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
1996 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
1997 | return 0; | |
1998 | } | |
1da177e4 | 1999 | |
ae7095a7 BF |
2000 | |
2001 | static int get_parent_attributes(struct svc_export *exp, struct kstat *stat) | |
2002 | { | |
2003 | struct path path = exp->ex_path; | |
2004 | int err; | |
2005 | ||
2006 | path_get(&path); | |
2007 | while (follow_up(&path)) { | |
2008 | if (path.dentry != path.mnt->mnt_root) | |
2009 | break; | |
2010 | } | |
2011 | err = vfs_getattr(path.mnt, path.dentry, stat); | |
2012 | path_put(&path); | |
2013 | return err; | |
2014 | } | |
2015 | ||
1da177e4 LT |
2016 | /* |
2017 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
2018 | * ourselves. | |
2019 | * | |
2020 | * @countp is the buffer size in _words_; upon successful return this becomes | |
2021 | * replaced with the number of words written. | |
2022 | */ | |
b37ad28b | 2023 | __be32 |
1da177e4 | 2024 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, |
2ebbc012 | 2025 | struct dentry *dentry, __be32 *buffer, int *countp, u32 *bmval, |
406a7ea9 | 2026 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
2027 | { |
2028 | u32 bmval0 = bmval[0]; | |
2029 | u32 bmval1 = bmval[1]; | |
7e705706 | 2030 | u32 bmval2 = bmval[2]; |
1da177e4 LT |
2031 | struct kstat stat; |
2032 | struct svc_fh tempfh; | |
2033 | struct kstatfs statfs; | |
2034 | int buflen = *countp << 2; | |
2ebbc012 | 2035 | __be32 *attrlenp; |
1da177e4 LT |
2036 | u32 dummy; |
2037 | u64 dummy64; | |
42ca0993 | 2038 | u32 rdattr_err = 0; |
2ebbc012 | 2039 | __be32 *p = buffer; |
b37ad28b | 2040 | __be32 status; |
b8dd7b9a | 2041 | int err; |
1da177e4 LT |
2042 | int aclsupport = 0; |
2043 | struct nfs4_acl *acl = NULL; | |
7e705706 AA |
2044 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
2045 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
2046 | struct path path = { |
2047 | .mnt = exp->ex_path.mnt, | |
2048 | .dentry = dentry, | |
2049 | }; | |
3d733711 | 2050 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
1da177e4 LT |
2051 | |
2052 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
7e705706 AA |
2053 | BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); |
2054 | BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); | |
2055 | BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); | |
1da177e4 | 2056 | |
42ca0993 | 2057 | if (exp->ex_fslocs.migrated) { |
7e705706 | 2058 | BUG_ON(bmval[2]); |
42ca0993 BF |
2059 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); |
2060 | if (status) | |
2061 | goto out; | |
2062 | } | |
2063 | ||
54775491 | 2064 | err = vfs_getattr(exp->ex_path.mnt, dentry, &stat); |
b8dd7b9a | 2065 | if (err) |
1da177e4 | 2066 | goto out_nfserr; |
a16e92ed BF |
2067 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | |
2068 | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
2069 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
2070 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 2071 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 2072 | if (err) |
1da177e4 LT |
2073 | goto out_nfserr; |
2074 | } | |
2075 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
2076 | fh_init(&tempfh, NFS4_FHSIZE); | |
2077 | status = fh_compose(&tempfh, exp, dentry, NULL); | |
2078 | if (status) | |
2079 | goto out; | |
2080 | fhp = &tempfh; | |
2081 | } | |
2082 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
2083 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
b8dd7b9a AV |
2084 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
2085 | aclsupport = (err == 0); | |
1da177e4 | 2086 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 2087 | if (err == -EOPNOTSUPP) |
1da177e4 | 2088 | bmval0 &= ~FATTR4_WORD0_ACL; |
b8dd7b9a | 2089 | else if (err == -EINVAL) { |
1da177e4 LT |
2090 | status = nfserr_attrnotsupp; |
2091 | goto out; | |
b8dd7b9a | 2092 | } else if (err != 0) |
1da177e4 LT |
2093 | goto out_nfserr; |
2094 | } | |
2095 | } | |
1da177e4 | 2096 | |
2b44f1ba BH |
2097 | if (bmval2) { |
2098 | if ((buflen -= 16) < 0) | |
2099 | goto out_resource; | |
7e705706 AA |
2100 | WRITE32(3); |
2101 | WRITE32(bmval0); | |
2102 | WRITE32(bmval1); | |
2103 | WRITE32(bmval2); | |
2b44f1ba BH |
2104 | } else if (bmval1) { |
2105 | if ((buflen -= 12) < 0) | |
2106 | goto out_resource; | |
7e705706 AA |
2107 | WRITE32(2); |
2108 | WRITE32(bmval0); | |
2109 | WRITE32(bmval1); | |
2110 | } else { | |
2b44f1ba BH |
2111 | if ((buflen -= 8) < 0) |
2112 | goto out_resource; | |
7e705706 AA |
2113 | WRITE32(1); |
2114 | WRITE32(bmval0); | |
2115 | } | |
1da177e4 LT |
2116 | attrlenp = p++; /* to be backfilled later */ |
2117 | ||
2118 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
7e705706 AA |
2119 | u32 word0 = nfsd_suppattrs0(minorversion); |
2120 | u32 word1 = nfsd_suppattrs1(minorversion); | |
2121 | u32 word2 = nfsd_suppattrs2(minorversion); | |
2122 | ||
42ca0993 BF |
2123 | if (!aclsupport) |
2124 | word0 &= ~FATTR4_WORD0_ACL; | |
7e705706 | 2125 | if (!word2) { |
2b44f1ba BH |
2126 | if ((buflen -= 12) < 0) |
2127 | goto out_resource; | |
7e705706 AA |
2128 | WRITE32(2); |
2129 | WRITE32(word0); | |
2130 | WRITE32(word1); | |
2131 | } else { | |
2b44f1ba BH |
2132 | if ((buflen -= 16) < 0) |
2133 | goto out_resource; | |
7e705706 AA |
2134 | WRITE32(3); |
2135 | WRITE32(word0); | |
2136 | WRITE32(word1); | |
2137 | WRITE32(word2); | |
2138 | } | |
1da177e4 LT |
2139 | } |
2140 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
2141 | if ((buflen -= 4) < 0) | |
2142 | goto out_resource; | |
3d2544b1 | 2143 | dummy = nfs4_file_type(stat.mode); |
1da177e4 LT |
2144 | if (dummy == NF4BAD) |
2145 | goto out_serverfault; | |
2146 | WRITE32(dummy); | |
2147 | } | |
2148 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
2149 | if ((buflen -= 4) < 0) | |
2150 | goto out_resource; | |
49640001 | 2151 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
e34ac862 | 2152 | WRITE32(NFS4_FH_PERSISTENT); |
49640001 | 2153 | else |
e34ac862 | 2154 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
1da177e4 LT |
2155 | } |
2156 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
1da177e4 LT |
2157 | if ((buflen -= 8) < 0) |
2158 | goto out_resource; | |
c654b8a9 | 2159 | write_change(&p, &stat, dentry->d_inode); |
1da177e4 LT |
2160 | } |
2161 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
2162 | if ((buflen -= 8) < 0) | |
2163 | goto out_resource; | |
2164 | WRITE64(stat.size); | |
2165 | } | |
2166 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
2167 | if ((buflen -= 4) < 0) | |
2168 | goto out_resource; | |
2169 | WRITE32(1); | |
2170 | } | |
2171 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
2172 | if ((buflen -= 4) < 0) | |
2173 | goto out_resource; | |
2174 | WRITE32(1); | |
2175 | } | |
2176 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
2177 | if ((buflen -= 4) < 0) | |
2178 | goto out_resource; | |
2179 | WRITE32(0); | |
2180 | } | |
2181 | if (bmval0 & FATTR4_WORD0_FSID) { | |
2182 | if ((buflen -= 16) < 0) | |
2183 | goto out_resource; | |
42ca0993 BF |
2184 | if (exp->ex_fslocs.migrated) { |
2185 | WRITE64(NFS4_REFERRAL_FSID_MAJOR); | |
2186 | WRITE64(NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
2187 | } else switch(fsid_source(fhp)) { |
2188 | case FSIDSOURCE_FSID: | |
1da177e4 LT |
2189 | WRITE64((u64)exp->ex_fsid); |
2190 | WRITE64((u64)0); | |
af6a4e28 N |
2191 | break; |
2192 | case FSIDSOURCE_DEV: | |
1da177e4 LT |
2193 | WRITE32(0); |
2194 | WRITE32(MAJOR(stat.dev)); | |
2195 | WRITE32(0); | |
2196 | WRITE32(MINOR(stat.dev)); | |
af6a4e28 N |
2197 | break; |
2198 | case FSIDSOURCE_UUID: | |
2199 | WRITEMEM(exp->ex_uuid, 16); | |
2200 | break; | |
1da177e4 LT |
2201 | } |
2202 | } | |
2203 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
2204 | if ((buflen -= 4) < 0) | |
2205 | goto out_resource; | |
2206 | WRITE32(0); | |
2207 | } | |
2208 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
2209 | if ((buflen -= 4) < 0) | |
2210 | goto out_resource; | |
3d733711 | 2211 | WRITE32(nn->nfsd4_lease); |
1da177e4 LT |
2212 | } |
2213 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
2214 | if ((buflen -= 4) < 0) | |
2215 | goto out_resource; | |
42ca0993 | 2216 | WRITE32(rdattr_err); |
1da177e4 LT |
2217 | } |
2218 | if (bmval0 & FATTR4_WORD0_ACL) { | |
2219 | struct nfs4_ace *ace; | |
1da177e4 LT |
2220 | |
2221 | if (acl == NULL) { | |
2222 | if ((buflen -= 4) < 0) | |
2223 | goto out_resource; | |
2224 | ||
2225 | WRITE32(0); | |
2226 | goto out_acl; | |
2227 | } | |
2228 | if ((buflen -= 4) < 0) | |
2229 | goto out_resource; | |
2230 | WRITE32(acl->naces); | |
2231 | ||
28e05dd8 | 2232 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
1da177e4 LT |
2233 | if ((buflen -= 4*3) < 0) |
2234 | goto out_resource; | |
2235 | WRITE32(ace->type); | |
2236 | WRITE32(ace->flag); | |
2237 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); | |
ab8e4aee | 2238 | status = nfsd4_encode_aclname(rqstp, ace, &p, &buflen); |
1da177e4 LT |
2239 | if (status == nfserr_resource) |
2240 | goto out_resource; | |
2241 | if (status) | |
2242 | goto out; | |
2243 | } | |
2244 | } | |
2245 | out_acl: | |
2246 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
2247 | if ((buflen -= 4) < 0) | |
2248 | goto out_resource; | |
2249 | WRITE32(aclsupport ? | |
2250 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); | |
2251 | } | |
2252 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
2253 | if ((buflen -= 4) < 0) | |
2254 | goto out_resource; | |
2255 | WRITE32(1); | |
2256 | } | |
2257 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
2258 | if ((buflen -= 4) < 0) | |
2259 | goto out_resource; | |
2930d381 | 2260 | WRITE32(0); |
1da177e4 LT |
2261 | } |
2262 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
2263 | if ((buflen -= 4) < 0) | |
2264 | goto out_resource; | |
2265 | WRITE32(1); | |
2266 | } | |
2267 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
2268 | if ((buflen -= 4) < 0) | |
2269 | goto out_resource; | |
2270 | WRITE32(1); | |
2271 | } | |
2272 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
2273 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; | |
2274 | if (buflen < 0) | |
2275 | goto out_resource; | |
2276 | WRITE32(fhp->fh_handle.fh_size); | |
2277 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); | |
2278 | } | |
2279 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
2280 | if ((buflen -= 8) < 0) | |
2281 | goto out_resource; | |
40ee5dc6 | 2282 | WRITE64(stat.ino); |
1da177e4 LT |
2283 | } |
2284 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
2285 | if ((buflen -= 8) < 0) | |
2286 | goto out_resource; | |
2287 | WRITE64((u64) statfs.f_ffree); | |
2288 | } | |
2289 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
2290 | if ((buflen -= 8) < 0) | |
2291 | goto out_resource; | |
2292 | WRITE64((u64) statfs.f_ffree); | |
2293 | } | |
2294 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
2295 | if ((buflen -= 8) < 0) | |
2296 | goto out_resource; | |
2297 | WRITE64((u64) statfs.f_files); | |
2298 | } | |
81c3f413 BF |
2299 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
2300 | status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); | |
2301 | if (status == nfserr_resource) | |
2302 | goto out_resource; | |
2303 | if (status) | |
2304 | goto out; | |
2305 | } | |
1da177e4 LT |
2306 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
2307 | if ((buflen -= 4) < 0) | |
2308 | goto out_resource; | |
2309 | WRITE32(1); | |
2310 | } | |
2311 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
2312 | if ((buflen -= 8) < 0) | |
2313 | goto out_resource; | |
2314 | WRITE64(~(u64)0); | |
2315 | } | |
2316 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
2317 | if ((buflen -= 4) < 0) | |
2318 | goto out_resource; | |
2319 | WRITE32(255); | |
2320 | } | |
2321 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
2322 | if ((buflen -= 4) < 0) | |
2323 | goto out_resource; | |
a16e92ed | 2324 | WRITE32(statfs.f_namelen); |
1da177e4 LT |
2325 | } |
2326 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
2327 | if ((buflen -= 8) < 0) | |
2328 | goto out_resource; | |
7adae489 | 2329 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2330 | } |
2331 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
2332 | if ((buflen -= 8) < 0) | |
2333 | goto out_resource; | |
7adae489 | 2334 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2335 | } |
2336 | if (bmval1 & FATTR4_WORD1_MODE) { | |
2337 | if ((buflen -= 4) < 0) | |
2338 | goto out_resource; | |
2339 | WRITE32(stat.mode & S_IALLUGO); | |
2340 | } | |
2341 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
2342 | if ((buflen -= 4) < 0) | |
2343 | goto out_resource; | |
2344 | WRITE32(1); | |
2345 | } | |
2346 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
2347 | if ((buflen -= 4) < 0) | |
2348 | goto out_resource; | |
2349 | WRITE32(stat.nlink); | |
2350 | } | |
2351 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
2352 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); | |
2353 | if (status == nfserr_resource) | |
2354 | goto out_resource; | |
2355 | if (status) | |
2356 | goto out; | |
2357 | } | |
2358 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
2359 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); | |
2360 | if (status == nfserr_resource) | |
2361 | goto out_resource; | |
2362 | if (status) | |
2363 | goto out; | |
2364 | } | |
2365 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
2366 | if ((buflen -= 8) < 0) | |
2367 | goto out_resource; | |
2368 | WRITE32((u32) MAJOR(stat.rdev)); | |
2369 | WRITE32((u32) MINOR(stat.rdev)); | |
2370 | } | |
2371 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
2372 | if ((buflen -= 8) < 0) | |
2373 | goto out_resource; | |
2374 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
2375 | WRITE64(dummy64); | |
2376 | } | |
2377 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
2378 | if ((buflen -= 8) < 0) | |
2379 | goto out_resource; | |
2380 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
2381 | WRITE64(dummy64); | |
2382 | } | |
2383 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
2384 | if ((buflen -= 8) < 0) | |
2385 | goto out_resource; | |
2386 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
2387 | WRITE64(dummy64); | |
2388 | } | |
2389 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
2390 | if ((buflen -= 8) < 0) | |
2391 | goto out_resource; | |
2392 | dummy64 = (u64)stat.blocks << 9; | |
2393 | WRITE64(dummy64); | |
2394 | } | |
2395 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
2396 | if ((buflen -= 12) < 0) | |
2397 | goto out_resource; | |
2398 | WRITE32(0); | |
2399 | WRITE32(stat.atime.tv_sec); | |
2400 | WRITE32(stat.atime.tv_nsec); | |
2401 | } | |
2402 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
2403 | if ((buflen -= 12) < 0) | |
2404 | goto out_resource; | |
2405 | WRITE32(0); | |
2406 | WRITE32(1); | |
2407 | WRITE32(0); | |
2408 | } | |
2409 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
2410 | if ((buflen -= 12) < 0) | |
2411 | goto out_resource; | |
2412 | WRITE32(0); | |
2413 | WRITE32(stat.ctime.tv_sec); | |
2414 | WRITE32(stat.ctime.tv_nsec); | |
2415 | } | |
2416 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
2417 | if ((buflen -= 12) < 0) | |
2418 | goto out_resource; | |
2419 | WRITE32(0); | |
2420 | WRITE32(stat.mtime.tv_sec); | |
2421 | WRITE32(stat.mtime.tv_nsec); | |
2422 | } | |
2423 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
1da177e4 LT |
2424 | if ((buflen -= 8) < 0) |
2425 | goto out_resource; | |
406a7ea9 FF |
2426 | /* |
2427 | * Get parent's attributes if not ignoring crossmount | |
2428 | * and this is the root of a cross-mounted filesystem. | |
2429 | */ | |
2430 | if (ignore_crossmnt == 0 && | |
ae7095a7 BF |
2431 | dentry == exp->ex_path.mnt->mnt_root) |
2432 | get_parent_attributes(exp, &stat); | |
40ee5dc6 | 2433 | WRITE64(stat.ino); |
1da177e4 | 2434 | } |
8c18f205 BH |
2435 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
2436 | WRITE32(3); | |
2437 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0); | |
2438 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1); | |
2439 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2); | |
2440 | } | |
7e705706 | 2441 | |
1da177e4 LT |
2442 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); |
2443 | *countp = p - buffer; | |
2444 | status = nfs_ok; | |
2445 | ||
2446 | out: | |
28e05dd8 | 2447 | kfree(acl); |
1da177e4 LT |
2448 | if (fhp == &tempfh) |
2449 | fh_put(&tempfh); | |
2450 | return status; | |
2451 | out_nfserr: | |
b8dd7b9a | 2452 | status = nfserrno(err); |
1da177e4 LT |
2453 | goto out; |
2454 | out_resource: | |
2455 | *countp = 0; | |
2456 | status = nfserr_resource; | |
2457 | goto out; | |
2458 | out_serverfault: | |
2459 | status = nfserr_serverfault; | |
2460 | goto out; | |
2461 | } | |
2462 | ||
c0ce6ec8 BF |
2463 | static inline int attributes_need_mount(u32 *bmval) |
2464 | { | |
2465 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2466 | return 1; | |
2467 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2468 | return 1; | |
2469 | return 0; | |
2470 | } | |
2471 | ||
b37ad28b | 2472 | static __be32 |
1da177e4 | 2473 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, |
2ebbc012 | 2474 | const char *name, int namlen, __be32 *p, int *buflen) |
1da177e4 LT |
2475 | { |
2476 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2477 | struct dentry *dentry; | |
b37ad28b | 2478 | __be32 nfserr; |
406a7ea9 | 2479 | int ignore_crossmnt = 0; |
1da177e4 LT |
2480 | |
2481 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
2482 | if (IS_ERR(dentry)) | |
2483 | return nfserrno(PTR_ERR(dentry)); | |
b2c0cea6 BF |
2484 | if (!dentry->d_inode) { |
2485 | /* | |
2486 | * nfsd_buffered_readdir drops the i_mutex between | |
2487 | * readdir and calling this callback, leaving a window | |
2488 | * where this directory entry could have gone away. | |
2489 | */ | |
2490 | dput(dentry); | |
2491 | return nfserr_noent; | |
2492 | } | |
1da177e4 LT |
2493 | |
2494 | exp_get(exp); | |
406a7ea9 FF |
2495 | /* |
2496 | * In the case of a mountpoint, the client may be asking for | |
2497 | * attributes that are only properties of the underlying filesystem | |
2498 | * as opposed to the cross-mounted file system. In such a case, | |
2499 | * we will not follow the cross mount and will fill the attribtutes | |
2500 | * directly from the mountpoint dentry. | |
2501 | */ | |
3227fa41 | 2502 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
2503 | int err; |
2504 | ||
3227fa41 BF |
2505 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
2506 | && !attributes_need_mount(cd->rd_bmval)) { | |
2507 | ignore_crossmnt = 1; | |
2508 | goto out_encode; | |
2509 | } | |
dcb488a3 AA |
2510 | /* |
2511 | * Why the heck aren't we just using nfsd_lookup?? | |
2512 | * Different "."/".." handling? Something else? | |
2513 | * At least, add a comment here to explain.... | |
2514 | */ | |
021d3a72 BF |
2515 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
2516 | if (err) { | |
2517 | nfserr = nfserrno(err); | |
1da177e4 LT |
2518 | goto out_put; |
2519 | } | |
dcb488a3 AA |
2520 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
2521 | if (nfserr) | |
2522 | goto out_put; | |
1da177e4 LT |
2523 | |
2524 | } | |
3227fa41 | 2525 | out_encode: |
1da177e4 | 2526 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, |
406a7ea9 | 2527 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
2528 | out_put: |
2529 | dput(dentry); | |
2530 | exp_put(exp); | |
2531 | return nfserr; | |
2532 | } | |
2533 | ||
2ebbc012 | 2534 | static __be32 * |
b37ad28b | 2535 | nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr) |
1da177e4 | 2536 | { |
2ebbc012 | 2537 | __be32 *attrlenp; |
1da177e4 LT |
2538 | |
2539 | if (buflen < 6) | |
2540 | return NULL; | |
2541 | *p++ = htonl(2); | |
2542 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
2543 | *p++ = htonl(0); /* bmval1 */ | |
2544 | ||
2545 | attrlenp = p++; | |
2546 | *p++ = nfserr; /* no htonl */ | |
2547 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
2548 | return p; | |
2549 | } | |
2550 | ||
2551 | static int | |
a0ad13ef N |
2552 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
2553 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 2554 | { |
a0ad13ef | 2555 | struct readdir_cd *ccd = ccdv; |
1da177e4 LT |
2556 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
2557 | int buflen; | |
2ebbc012 | 2558 | __be32 *p = cd->buffer; |
b2c0cea6 | 2559 | __be32 *cookiep; |
b37ad28b | 2560 | __be32 nfserr = nfserr_toosmall; |
1da177e4 LT |
2561 | |
2562 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
2563 | if (name && isdotent(name, namlen)) { | |
2564 | cd->common.err = nfs_ok; | |
2565 | return 0; | |
2566 | } | |
2567 | ||
2568 | if (cd->offset) | |
2569 | xdr_encode_hyper(cd->offset, (u64) offset); | |
2570 | ||
2571 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); | |
2572 | if (buflen < 0) | |
2573 | goto fail; | |
2574 | ||
2575 | *p++ = xdr_one; /* mark entry present */ | |
b2c0cea6 | 2576 | cookiep = p; |
1da177e4 LT |
2577 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
2578 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
2579 | ||
2580 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen); | |
2581 | switch (nfserr) { | |
2582 | case nfs_ok: | |
2583 | p += buflen; | |
2584 | break; | |
2585 | case nfserr_resource: | |
2586 | nfserr = nfserr_toosmall; | |
2587 | goto fail; | |
b2c0cea6 BF |
2588 | case nfserr_noent: |
2589 | goto skip_entry; | |
1da177e4 LT |
2590 | default: |
2591 | /* | |
2592 | * If the client requested the RDATTR_ERROR attribute, | |
2593 | * we stuff the error code into this attribute | |
2594 | * and continue. If this attribute was not requested, | |
2595 | * then in accordance with the spec, we fail the | |
2596 | * entire READDIR operation(!) | |
2597 | */ | |
2598 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
2599 | goto fail; | |
1da177e4 | 2600 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
34081efc FI |
2601 | if (p == NULL) { |
2602 | nfserr = nfserr_toosmall; | |
1da177e4 | 2603 | goto fail; |
34081efc | 2604 | } |
1da177e4 LT |
2605 | } |
2606 | cd->buflen -= (p - cd->buffer); | |
2607 | cd->buffer = p; | |
b2c0cea6 BF |
2608 | cd->offset = cookiep; |
2609 | skip_entry: | |
1da177e4 LT |
2610 | cd->common.err = nfs_ok; |
2611 | return 0; | |
2612 | fail: | |
2613 | cd->common.err = nfserr; | |
2614 | return -EINVAL; | |
2615 | } | |
2616 | ||
e2f282b9 BH |
2617 | static void |
2618 | nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid) | |
2619 | { | |
bc749ca4 | 2620 | __be32 *p; |
e2f282b9 BH |
2621 | |
2622 | RESERVE_SPACE(sizeof(stateid_t)); | |
2623 | WRITE32(sid->si_generation); | |
2624 | WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
2625 | ADJUST_ARGS(); | |
2626 | } | |
2627 | ||
695e12f8 | 2628 | static __be32 |
b37ad28b | 2629 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 2630 | { |
bc749ca4 | 2631 | __be32 *p; |
1da177e4 LT |
2632 | |
2633 | if (!nfserr) { | |
2634 | RESERVE_SPACE(8); | |
2635 | WRITE32(access->ac_supported); | |
2636 | WRITE32(access->ac_resp_access); | |
2637 | ADJUST_ARGS(); | |
2638 | } | |
695e12f8 | 2639 | return nfserr; |
1da177e4 LT |
2640 | } |
2641 | ||
1d1bc8f2 BF |
2642 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
2643 | { | |
2644 | __be32 *p; | |
2645 | ||
2646 | if (!nfserr) { | |
2647 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 8); | |
2648 | WRITEMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
2649 | WRITE32(bcts->dir); | |
6e67b5d1 | 2650 | /* Sorry, we do not yet support RDMA over 4.1: */ |
1d1bc8f2 BF |
2651 | WRITE32(0); |
2652 | ADJUST_ARGS(); | |
2653 | } | |
2654 | return nfserr; | |
2655 | } | |
2656 | ||
695e12f8 | 2657 | static __be32 |
b37ad28b | 2658 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 LT |
2659 | { |
2660 | ENCODE_SEQID_OP_HEAD; | |
2661 | ||
e2f282b9 BH |
2662 | if (!nfserr) |
2663 | nfsd4_encode_stateid(resp, &close->cl_stateid); | |
2664 | ||
f3e42237 | 2665 | encode_seqid_op_tail(resp, save, nfserr); |
695e12f8 | 2666 | return nfserr; |
1da177e4 LT |
2667 | } |
2668 | ||
2669 | ||
695e12f8 | 2670 | static __be32 |
b37ad28b | 2671 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 2672 | { |
bc749ca4 | 2673 | __be32 *p; |
1da177e4 LT |
2674 | |
2675 | if (!nfserr) { | |
ab4684d1 CL |
2676 | RESERVE_SPACE(NFS4_VERIFIER_SIZE); |
2677 | WRITEMEM(commit->co_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 LT |
2678 | ADJUST_ARGS(); |
2679 | } | |
695e12f8 | 2680 | return nfserr; |
1da177e4 LT |
2681 | } |
2682 | ||
695e12f8 | 2683 | static __be32 |
b37ad28b | 2684 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 2685 | { |
bc749ca4 | 2686 | __be32 *p; |
1da177e4 LT |
2687 | |
2688 | if (!nfserr) { | |
2689 | RESERVE_SPACE(32); | |
c654b8a9 | 2690 | write_cinfo(&p, &create->cr_cinfo); |
1da177e4 LT |
2691 | WRITE32(2); |
2692 | WRITE32(create->cr_bmval[0]); | |
2693 | WRITE32(create->cr_bmval[1]); | |
2694 | ADJUST_ARGS(); | |
2695 | } | |
695e12f8 | 2696 | return nfserr; |
1da177e4 LT |
2697 | } |
2698 | ||
b37ad28b AV |
2699 | static __be32 |
2700 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
2701 | { |
2702 | struct svc_fh *fhp = getattr->ga_fhp; | |
2703 | int buflen; | |
2704 | ||
2705 | if (nfserr) | |
2706 | return nfserr; | |
2707 | ||
2708 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); | |
2709 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, | |
2710 | resp->p, &buflen, getattr->ga_bmval, | |
406a7ea9 | 2711 | resp->rqstp, 0); |
1da177e4 LT |
2712 | if (!nfserr) |
2713 | resp->p += buflen; | |
2714 | return nfserr; | |
2715 | } | |
2716 | ||
695e12f8 BH |
2717 | static __be32 |
2718 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 2719 | { |
695e12f8 | 2720 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 2721 | unsigned int len; |
bc749ca4 | 2722 | __be32 *p; |
1da177e4 LT |
2723 | |
2724 | if (!nfserr) { | |
2725 | len = fhp->fh_handle.fh_size; | |
2726 | RESERVE_SPACE(len + 4); | |
2727 | WRITE32(len); | |
2728 | WRITEMEM(&fhp->fh_handle.fh_base, len); | |
2729 | ADJUST_ARGS(); | |
2730 | } | |
695e12f8 | 2731 | return nfserr; |
1da177e4 LT |
2732 | } |
2733 | ||
2734 | /* | |
2735 | * Including all fields other than the name, a LOCK4denied structure requires | |
2736 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
2737 | */ | |
2738 | static void | |
2739 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) | |
2740 | { | |
7c13f344 | 2741 | struct xdr_netobj *conf = &ld->ld_owner; |
bc749ca4 | 2742 | __be32 *p; |
1da177e4 | 2743 | |
7c13f344 | 2744 | RESERVE_SPACE(32 + XDR_LEN(conf->len)); |
1da177e4 LT |
2745 | WRITE64(ld->ld_start); |
2746 | WRITE64(ld->ld_length); | |
2747 | WRITE32(ld->ld_type); | |
7c13f344 | 2748 | if (conf->len) { |
1da177e4 | 2749 | WRITEMEM(&ld->ld_clientid, 8); |
7c13f344 BF |
2750 | WRITE32(conf->len); |
2751 | WRITEMEM(conf->data, conf->len); | |
2752 | kfree(conf->data); | |
1da177e4 LT |
2753 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
2754 | WRITE64((u64)0); /* clientid */ | |
2755 | WRITE32(0); /* length of owner name */ | |
2756 | } | |
2757 | ADJUST_ARGS(); | |
2758 | } | |
2759 | ||
695e12f8 | 2760 | static __be32 |
b37ad28b | 2761 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 2762 | { |
1da177e4 LT |
2763 | ENCODE_SEQID_OP_HEAD; |
2764 | ||
e2f282b9 BH |
2765 | if (!nfserr) |
2766 | nfsd4_encode_stateid(resp, &lock->lk_resp_stateid); | |
2767 | else if (nfserr == nfserr_denied) | |
1da177e4 LT |
2768 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); |
2769 | ||
f3e42237 | 2770 | encode_seqid_op_tail(resp, save, nfserr); |
695e12f8 | 2771 | return nfserr; |
1da177e4 LT |
2772 | } |
2773 | ||
695e12f8 | 2774 | static __be32 |
b37ad28b | 2775 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 LT |
2776 | { |
2777 | if (nfserr == nfserr_denied) | |
2778 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); | |
695e12f8 | 2779 | return nfserr; |
1da177e4 LT |
2780 | } |
2781 | ||
695e12f8 | 2782 | static __be32 |
b37ad28b | 2783 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 LT |
2784 | { |
2785 | ENCODE_SEQID_OP_HEAD; | |
2786 | ||
e2f282b9 BH |
2787 | if (!nfserr) |
2788 | nfsd4_encode_stateid(resp, &locku->lu_stateid); | |
2789 | ||
f3e42237 | 2790 | encode_seqid_op_tail(resp, save, nfserr); |
695e12f8 | 2791 | return nfserr; |
1da177e4 LT |
2792 | } |
2793 | ||
2794 | ||
695e12f8 | 2795 | static __be32 |
b37ad28b | 2796 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 2797 | { |
bc749ca4 | 2798 | __be32 *p; |
1da177e4 LT |
2799 | |
2800 | if (!nfserr) { | |
2801 | RESERVE_SPACE(20); | |
c654b8a9 | 2802 | write_cinfo(&p, &link->li_cinfo); |
1da177e4 LT |
2803 | ADJUST_ARGS(); |
2804 | } | |
695e12f8 | 2805 | return nfserr; |
1da177e4 LT |
2806 | } |
2807 | ||
2808 | ||
695e12f8 | 2809 | static __be32 |
b37ad28b | 2810 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 2811 | { |
bc749ca4 | 2812 | __be32 *p; |
1da177e4 LT |
2813 | ENCODE_SEQID_OP_HEAD; |
2814 | ||
2815 | if (nfserr) | |
2816 | goto out; | |
2817 | ||
e2f282b9 BH |
2818 | nfsd4_encode_stateid(resp, &open->op_stateid); |
2819 | RESERVE_SPACE(40); | |
c654b8a9 | 2820 | write_cinfo(&p, &open->op_cinfo); |
1da177e4 LT |
2821 | WRITE32(open->op_rflags); |
2822 | WRITE32(2); | |
2823 | WRITE32(open->op_bmval[0]); | |
2824 | WRITE32(open->op_bmval[1]); | |
2825 | WRITE32(open->op_delegate_type); | |
2826 | ADJUST_ARGS(); | |
2827 | ||
2828 | switch (open->op_delegate_type) { | |
2829 | case NFS4_OPEN_DELEGATE_NONE: | |
2830 | break; | |
2831 | case NFS4_OPEN_DELEGATE_READ: | |
e2f282b9 BH |
2832 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2833 | RESERVE_SPACE(20); | |
7b190fec | 2834 | WRITE32(open->op_recall); |
1da177e4 LT |
2835 | |
2836 | /* | |
2837 | * TODO: ACE's in delegations | |
2838 | */ | |
2839 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2840 | WRITE32(0); | |
2841 | WRITE32(0); | |
2842 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2843 | ADJUST_ARGS(); | |
2844 | break; | |
2845 | case NFS4_OPEN_DELEGATE_WRITE: | |
e2f282b9 BH |
2846 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2847 | RESERVE_SPACE(32); | |
1da177e4 LT |
2848 | WRITE32(0); |
2849 | ||
2850 | /* | |
2851 | * TODO: space_limit's in delegations | |
2852 | */ | |
2853 | WRITE32(NFS4_LIMIT_SIZE); | |
2854 | WRITE32(~(u32)0); | |
2855 | WRITE32(~(u32)0); | |
2856 | ||
2857 | /* | |
2858 | * TODO: ACE's in delegations | |
2859 | */ | |
2860 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2861 | WRITE32(0); | |
2862 | WRITE32(0); | |
2863 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2864 | ADJUST_ARGS(); | |
2865 | break; | |
d24433cd BH |
2866 | case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */ |
2867 | switch (open->op_why_no_deleg) { | |
2868 | case WND4_CONTENTION: | |
2869 | case WND4_RESOURCE: | |
2870 | RESERVE_SPACE(8); | |
2871 | WRITE32(open->op_why_no_deleg); | |
2872 | WRITE32(0); /* deleg signaling not supported yet */ | |
2873 | break; | |
2874 | default: | |
2875 | RESERVE_SPACE(4); | |
2876 | WRITE32(open->op_why_no_deleg); | |
2877 | } | |
2878 | ADJUST_ARGS(); | |
2879 | break; | |
1da177e4 LT |
2880 | default: |
2881 | BUG(); | |
2882 | } | |
2883 | /* XXX save filehandle here */ | |
2884 | out: | |
f3e42237 | 2885 | encode_seqid_op_tail(resp, save, nfserr); |
695e12f8 | 2886 | return nfserr; |
1da177e4 LT |
2887 | } |
2888 | ||
695e12f8 | 2889 | static __be32 |
b37ad28b | 2890 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 LT |
2891 | { |
2892 | ENCODE_SEQID_OP_HEAD; | |
e2f282b9 BH |
2893 | |
2894 | if (!nfserr) | |
2895 | nfsd4_encode_stateid(resp, &oc->oc_resp_stateid); | |
1da177e4 | 2896 | |
f3e42237 | 2897 | encode_seqid_op_tail(resp, save, nfserr); |
695e12f8 | 2898 | return nfserr; |
1da177e4 LT |
2899 | } |
2900 | ||
695e12f8 | 2901 | static __be32 |
b37ad28b | 2902 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 LT |
2903 | { |
2904 | ENCODE_SEQID_OP_HEAD; | |
e2f282b9 BH |
2905 | |
2906 | if (!nfserr) | |
2907 | nfsd4_encode_stateid(resp, &od->od_stateid); | |
1da177e4 | 2908 | |
f3e42237 | 2909 | encode_seqid_op_tail(resp, save, nfserr); |
695e12f8 | 2910 | return nfserr; |
1da177e4 LT |
2911 | } |
2912 | ||
b37ad28b AV |
2913 | static __be32 |
2914 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
44524359 | 2915 | struct nfsd4_read *read) |
1da177e4 LT |
2916 | { |
2917 | u32 eof; | |
afc59400 BF |
2918 | int v; |
2919 | struct page *page; | |
1da177e4 LT |
2920 | unsigned long maxcount; |
2921 | long len; | |
bc749ca4 | 2922 | __be32 *p; |
1da177e4 LT |
2923 | |
2924 | if (nfserr) | |
2925 | return nfserr; | |
2926 | if (resp->xbuf->page_len) | |
2927 | return nfserr_resource; | |
2928 | ||
2929 | RESERVE_SPACE(8); /* eof flag and byte count */ | |
2930 | ||
7adae489 | 2931 | maxcount = svc_max_payload(resp->rqstp); |
1da177e4 LT |
2932 | if (maxcount > read->rd_length) |
2933 | maxcount = read->rd_length; | |
2934 | ||
2935 | len = maxcount; | |
2936 | v = 0; | |
2937 | while (len > 0) { | |
afc59400 BF |
2938 | page = *(resp->rqstp->rq_next_page); |
2939 | if (!page) { /* ran out of pages */ | |
d5f50b0c BF |
2940 | maxcount -= len; |
2941 | break; | |
2942 | } | |
afc59400 | 2943 | resp->rqstp->rq_vec[v].iov_base = page_address(page); |
3cc03b16 | 2944 | resp->rqstp->rq_vec[v].iov_len = |
44524359 | 2945 | len < PAGE_SIZE ? len : PAGE_SIZE; |
afc59400 | 2946 | resp->rqstp->rq_next_page++; |
1da177e4 LT |
2947 | v++; |
2948 | len -= PAGE_SIZE; | |
2949 | } | |
2950 | read->rd_vlen = v; | |
2951 | ||
039a87ca | 2952 | nfserr = nfsd_read_file(read->rd_rqstp, read->rd_fhp, read->rd_filp, |
3cc03b16 | 2953 | read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, |
1da177e4 LT |
2954 | &maxcount); |
2955 | ||
1da177e4 LT |
2956 | if (nfserr) |
2957 | return nfserr; | |
44524359 N |
2958 | eof = (read->rd_offset + maxcount >= |
2959 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 LT |
2960 | |
2961 | WRITE32(eof); | |
2962 | WRITE32(maxcount); | |
2963 | ADJUST_ARGS(); | |
6ed6decc N |
2964 | resp->xbuf->head[0].iov_len = (char*)p |
2965 | - (char*)resp->xbuf->head[0].iov_base; | |
1da177e4 LT |
2966 | resp->xbuf->page_len = maxcount; |
2967 | ||
6ed6decc | 2968 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 2969 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 2970 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 2971 | if (maxcount&3) { |
6ed6decc N |
2972 | RESERVE_SPACE(4); |
2973 | WRITE32(0); | |
1da177e4 LT |
2974 | resp->xbuf->tail[0].iov_base += maxcount&3; |
2975 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 2976 | ADJUST_ARGS(); |
1da177e4 LT |
2977 | } |
2978 | return 0; | |
2979 | } | |
2980 | ||
b37ad28b AV |
2981 | static __be32 |
2982 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
2983 | { |
2984 | int maxcount; | |
2985 | char *page; | |
bc749ca4 | 2986 | __be32 *p; |
1da177e4 LT |
2987 | |
2988 | if (nfserr) | |
2989 | return nfserr; | |
2990 | if (resp->xbuf->page_len) | |
2991 | return nfserr_resource; | |
afc59400 | 2992 | if (!*resp->rqstp->rq_next_page) |
d5f50b0c | 2993 | return nfserr_resource; |
1da177e4 | 2994 | |
afc59400 | 2995 | page = page_address(*(resp->rqstp->rq_next_page++)); |
1da177e4 LT |
2996 | |
2997 | maxcount = PAGE_SIZE; | |
2998 | RESERVE_SPACE(4); | |
2999 | ||
3000 | /* | |
3001 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
3002 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
3003 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
3004 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
3005 | */ | |
3006 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); | |
3007 | if (nfserr == nfserr_isdir) | |
3008 | return nfserr_inval; | |
3009 | if (nfserr) | |
3010 | return nfserr; | |
3011 | ||
3012 | WRITE32(maxcount); | |
3013 | ADJUST_ARGS(); | |
6ed6decc N |
3014 | resp->xbuf->head[0].iov_len = (char*)p |
3015 | - (char*)resp->xbuf->head[0].iov_base; | |
3016 | resp->xbuf->page_len = maxcount; | |
1da177e4 | 3017 | |
6ed6decc | 3018 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 3019 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 3020 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 3021 | if (maxcount&3) { |
6ed6decc N |
3022 | RESERVE_SPACE(4); |
3023 | WRITE32(0); | |
1da177e4 LT |
3024 | resp->xbuf->tail[0].iov_base += maxcount&3; |
3025 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 3026 | ADJUST_ARGS(); |
1da177e4 LT |
3027 | } |
3028 | return 0; | |
3029 | } | |
3030 | ||
b37ad28b AV |
3031 | static __be32 |
3032 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
3033 | { |
3034 | int maxcount; | |
3035 | loff_t offset; | |
2ebbc012 | 3036 | __be32 *page, *savep, *tailbase; |
bc749ca4 | 3037 | __be32 *p; |
1da177e4 LT |
3038 | |
3039 | if (nfserr) | |
3040 | return nfserr; | |
3041 | if (resp->xbuf->page_len) | |
3042 | return nfserr_resource; | |
afc59400 | 3043 | if (!*resp->rqstp->rq_next_page) |
d5f50b0c | 3044 | return nfserr_resource; |
1da177e4 | 3045 | |
ab4684d1 | 3046 | RESERVE_SPACE(NFS4_VERIFIER_SIZE); |
1da177e4 LT |
3047 | savep = p; |
3048 | ||
3049 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
3050 | WRITE32(0); | |
3051 | WRITE32(0); | |
3052 | ADJUST_ARGS(); | |
3053 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; | |
bb6e8a9f | 3054 | tailbase = p; |
1da177e4 LT |
3055 | |
3056 | maxcount = PAGE_SIZE; | |
3057 | if (maxcount > readdir->rd_maxcount) | |
3058 | maxcount = readdir->rd_maxcount; | |
3059 | ||
3060 | /* | |
3061 | * Convert from bytes to words, account for the two words already | |
3062 | * written, make sure to leave two words at the end for the next | |
3063 | * pointer and eof field. | |
3064 | */ | |
3065 | maxcount = (maxcount >> 2) - 4; | |
3066 | if (maxcount < 0) { | |
3067 | nfserr = nfserr_toosmall; | |
3068 | goto err_no_verf; | |
3069 | } | |
3070 | ||
afc59400 | 3071 | page = page_address(*(resp->rqstp->rq_next_page++)); |
1da177e4 LT |
3072 | readdir->common.err = 0; |
3073 | readdir->buflen = maxcount; | |
3074 | readdir->buffer = page; | |
3075 | readdir->offset = NULL; | |
3076 | ||
3077 | offset = readdir->rd_cookie; | |
3078 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
3079 | &offset, | |
3080 | &readdir->common, nfsd4_encode_dirent); | |
3081 | if (nfserr == nfs_ok && | |
3082 | readdir->common.err == nfserr_toosmall && | |
3083 | readdir->buffer == page) | |
3084 | nfserr = nfserr_toosmall; | |
1da177e4 LT |
3085 | if (nfserr) |
3086 | goto err_no_verf; | |
3087 | ||
3088 | if (readdir->offset) | |
3089 | xdr_encode_hyper(readdir->offset, offset); | |
3090 | ||
3091 | p = readdir->buffer; | |
3092 | *p++ = 0; /* no more entries */ | |
3093 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
afc59400 BF |
3094 | resp->xbuf->page_len = ((char*)p) - |
3095 | (char*)page_address(*(resp->rqstp->rq_next_page-1)); | |
1da177e4 | 3096 | |
bb6e8a9f | 3097 | /* Use rest of head for padding and remaining ops: */ |
bb6e8a9f | 3098 | resp->xbuf->tail[0].iov_base = tailbase; |
1da177e4 LT |
3099 | resp->xbuf->tail[0].iov_len = 0; |
3100 | resp->p = resp->xbuf->tail[0].iov_base; | |
bb6e8a9f | 3101 | resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; |
1da177e4 LT |
3102 | |
3103 | return 0; | |
3104 | err_no_verf: | |
3105 | p = savep; | |
3106 | ADJUST_ARGS(); | |
3107 | return nfserr; | |
3108 | } | |
3109 | ||
695e12f8 | 3110 | static __be32 |
b37ad28b | 3111 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 3112 | { |
bc749ca4 | 3113 | __be32 *p; |
1da177e4 LT |
3114 | |
3115 | if (!nfserr) { | |
3116 | RESERVE_SPACE(20); | |
c654b8a9 | 3117 | write_cinfo(&p, &remove->rm_cinfo); |
1da177e4 LT |
3118 | ADJUST_ARGS(); |
3119 | } | |
695e12f8 | 3120 | return nfserr; |
1da177e4 LT |
3121 | } |
3122 | ||
695e12f8 | 3123 | static __be32 |
b37ad28b | 3124 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 3125 | { |
bc749ca4 | 3126 | __be32 *p; |
1da177e4 LT |
3127 | |
3128 | if (!nfserr) { | |
3129 | RESERVE_SPACE(40); | |
c654b8a9 BF |
3130 | write_cinfo(&p, &rename->rn_sinfo); |
3131 | write_cinfo(&p, &rename->rn_tinfo); | |
1da177e4 LT |
3132 | ADJUST_ARGS(); |
3133 | } | |
695e12f8 | 3134 | return nfserr; |
1da177e4 LT |
3135 | } |
3136 | ||
695e12f8 | 3137 | static __be32 |
22b6dee8 MJ |
3138 | nfsd4_do_encode_secinfo(struct nfsd4_compoundres *resp, |
3139 | __be32 nfserr,struct svc_export *exp) | |
dcb488a3 AA |
3140 | { |
3141 | int i = 0; | |
4796f457 BF |
3142 | u32 nflavs; |
3143 | struct exp_flavor_info *flavs; | |
3144 | struct exp_flavor_info def_flavs[2]; | |
bc749ca4 | 3145 | __be32 *p; |
dcb488a3 AA |
3146 | |
3147 | if (nfserr) | |
3148 | goto out; | |
4796f457 BF |
3149 | if (exp->ex_nflavors) { |
3150 | flavs = exp->ex_flavors; | |
3151 | nflavs = exp->ex_nflavors; | |
3152 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
3153 | flavs = def_flavs; | |
3154 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
3155 | nflavs = 2; | |
3156 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
3157 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
3158 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
3159 | nflavs = 1; | |
3160 | flavs[0].pseudoflavor | |
3161 | = svcauth_gss_flavor(exp->ex_client); | |
3162 | } else { | |
3163 | nflavs = 1; | |
3164 | flavs[0].pseudoflavor | |
3165 | = exp->ex_client->flavour->flavour; | |
3166 | } | |
3167 | } | |
3168 | ||
dcb488a3 | 3169 | RESERVE_SPACE(4); |
4796f457 | 3170 | WRITE32(nflavs); |
dcb488a3 | 3171 | ADJUST_ARGS(); |
4796f457 BF |
3172 | for (i = 0; i < nflavs; i++) { |
3173 | u32 flav = flavs[i].pseudoflavor; | |
dcb488a3 AA |
3174 | struct gss_api_mech *gm = gss_mech_get_by_pseudoflavor(flav); |
3175 | ||
3176 | if (gm) { | |
3177 | RESERVE_SPACE(4); | |
3178 | WRITE32(RPC_AUTH_GSS); | |
3179 | ADJUST_ARGS(); | |
3180 | RESERVE_SPACE(4 + gm->gm_oid.len); | |
3181 | WRITE32(gm->gm_oid.len); | |
3182 | WRITEMEM(gm->gm_oid.data, gm->gm_oid.len); | |
3183 | ADJUST_ARGS(); | |
3184 | RESERVE_SPACE(4); | |
3185 | WRITE32(0); /* qop */ | |
3186 | ADJUST_ARGS(); | |
3187 | RESERVE_SPACE(4); | |
3188 | WRITE32(gss_pseudoflavor_to_service(gm, flav)); | |
3189 | ADJUST_ARGS(); | |
3190 | gss_mech_put(gm); | |
3191 | } else { | |
3192 | RESERVE_SPACE(4); | |
3193 | WRITE32(flav); | |
3194 | ADJUST_ARGS(); | |
3195 | } | |
3196 | } | |
3197 | out: | |
3198 | if (exp) | |
3199 | exp_put(exp); | |
695e12f8 | 3200 | return nfserr; |
dcb488a3 AA |
3201 | } |
3202 | ||
22b6dee8 MJ |
3203 | static __be32 |
3204 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3205 | struct nfsd4_secinfo *secinfo) | |
3206 | { | |
3207 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->si_exp); | |
3208 | } | |
3209 | ||
3210 | static __be32 | |
3211 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3212 | struct nfsd4_secinfo_no_name *secinfo) | |
3213 | { | |
3214 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->sin_exp); | |
3215 | } | |
3216 | ||
1da177e4 LT |
3217 | /* |
3218 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
3219 | * regardless of the error status. | |
3220 | */ | |
695e12f8 | 3221 | static __be32 |
b37ad28b | 3222 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 3223 | { |
bc749ca4 | 3224 | __be32 *p; |
1da177e4 LT |
3225 | |
3226 | RESERVE_SPACE(12); | |
3227 | if (nfserr) { | |
3228 | WRITE32(2); | |
3229 | WRITE32(0); | |
3230 | WRITE32(0); | |
3231 | } | |
3232 | else { | |
3233 | WRITE32(2); | |
3234 | WRITE32(setattr->sa_bmval[0]); | |
3235 | WRITE32(setattr->sa_bmval[1]); | |
3236 | } | |
3237 | ADJUST_ARGS(); | |
695e12f8 | 3238 | return nfserr; |
1da177e4 LT |
3239 | } |
3240 | ||
695e12f8 | 3241 | static __be32 |
b37ad28b | 3242 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 3243 | { |
bc749ca4 | 3244 | __be32 *p; |
1da177e4 LT |
3245 | |
3246 | if (!nfserr) { | |
ab4684d1 | 3247 | RESERVE_SPACE(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 3248 | WRITEMEM(&scd->se_clientid, 8); |
ab4684d1 | 3249 | WRITEMEM(&scd->se_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
3250 | ADJUST_ARGS(); |
3251 | } | |
3252 | else if (nfserr == nfserr_clid_inuse) { | |
3253 | RESERVE_SPACE(8); | |
3254 | WRITE32(0); | |
3255 | WRITE32(0); | |
3256 | ADJUST_ARGS(); | |
3257 | } | |
695e12f8 | 3258 | return nfserr; |
1da177e4 LT |
3259 | } |
3260 | ||
695e12f8 | 3261 | static __be32 |
b37ad28b | 3262 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 3263 | { |
bc749ca4 | 3264 | __be32 *p; |
1da177e4 LT |
3265 | |
3266 | if (!nfserr) { | |
3267 | RESERVE_SPACE(16); | |
3268 | WRITE32(write->wr_bytes_written); | |
3269 | WRITE32(write->wr_how_written); | |
ab4684d1 | 3270 | WRITEMEM(write->wr_verifier.data, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
3271 | ADJUST_ARGS(); |
3272 | } | |
695e12f8 | 3273 | return nfserr; |
1da177e4 LT |
3274 | } |
3275 | ||
2db134eb | 3276 | static __be32 |
57b7b43b | 3277 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3278 | struct nfsd4_exchange_id *exid) |
3279 | { | |
bc749ca4 | 3280 | __be32 *p; |
0733d213 AA |
3281 | char *major_id; |
3282 | char *server_scope; | |
3283 | int major_id_sz; | |
3284 | int server_scope_sz; | |
3285 | uint64_t minor_id = 0; | |
3286 | ||
3287 | if (nfserr) | |
3288 | return nfserr; | |
3289 | ||
3290 | major_id = utsname()->nodename; | |
3291 | major_id_sz = strlen(major_id); | |
3292 | server_scope = utsname()->nodename; | |
3293 | server_scope_sz = strlen(server_scope); | |
3294 | ||
3295 | RESERVE_SPACE( | |
3296 | 8 /* eir_clientid */ + | |
3297 | 4 /* eir_sequenceid */ + | |
3298 | 4 /* eir_flags */ + | |
3299 | 4 /* spr_how (SP4_NONE) */ + | |
3300 | 8 /* so_minor_id */ + | |
3301 | 4 /* so_major_id.len */ + | |
3302 | (XDR_QUADLEN(major_id_sz) * 4) + | |
3303 | 4 /* eir_server_scope.len */ + | |
3304 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
3305 | 4 /* eir_server_impl_id.count (0) */); | |
3306 | ||
3307 | WRITEMEM(&exid->clientid, 8); | |
3308 | WRITE32(exid->seqid); | |
3309 | WRITE32(exid->flags); | |
3310 | ||
3311 | /* state_protect4_r. Currently only support SP4_NONE */ | |
3312 | BUG_ON(exid->spa_how != SP4_NONE); | |
3313 | WRITE32(exid->spa_how); | |
3314 | ||
3315 | /* The server_owner struct */ | |
3316 | WRITE64(minor_id); /* Minor id */ | |
3317 | /* major id */ | |
3318 | WRITE32(major_id_sz); | |
3319 | WRITEMEM(major_id, major_id_sz); | |
3320 | ||
3321 | /* Server scope */ | |
3322 | WRITE32(server_scope_sz); | |
3323 | WRITEMEM(server_scope, server_scope_sz); | |
3324 | ||
3325 | /* Implementation id */ | |
3326 | WRITE32(0); /* zero length nfs_impl_id4 array */ | |
3327 | ADJUST_ARGS(); | |
3328 | return 0; | |
2db134eb AA |
3329 | } |
3330 | ||
3331 | static __be32 | |
57b7b43b | 3332 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3333 | struct nfsd4_create_session *sess) |
3334 | { | |
bc749ca4 | 3335 | __be32 *p; |
ec6b5d7b AA |
3336 | |
3337 | if (nfserr) | |
3338 | return nfserr; | |
3339 | ||
3340 | RESERVE_SPACE(24); | |
3341 | WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3342 | WRITE32(sess->seqid); | |
3343 | WRITE32(sess->flags); | |
3344 | ADJUST_ARGS(); | |
3345 | ||
3346 | RESERVE_SPACE(28); | |
3347 | WRITE32(0); /* headerpadsz */ | |
3348 | WRITE32(sess->fore_channel.maxreq_sz); | |
3349 | WRITE32(sess->fore_channel.maxresp_sz); | |
3350 | WRITE32(sess->fore_channel.maxresp_cached); | |
3351 | WRITE32(sess->fore_channel.maxops); | |
3352 | WRITE32(sess->fore_channel.maxreqs); | |
3353 | WRITE32(sess->fore_channel.nr_rdma_attrs); | |
3354 | ADJUST_ARGS(); | |
3355 | ||
3356 | if (sess->fore_channel.nr_rdma_attrs) { | |
3357 | RESERVE_SPACE(4); | |
3358 | WRITE32(sess->fore_channel.rdma_attrs); | |
3359 | ADJUST_ARGS(); | |
3360 | } | |
3361 | ||
3362 | RESERVE_SPACE(28); | |
3363 | WRITE32(0); /* headerpadsz */ | |
3364 | WRITE32(sess->back_channel.maxreq_sz); | |
3365 | WRITE32(sess->back_channel.maxresp_sz); | |
3366 | WRITE32(sess->back_channel.maxresp_cached); | |
3367 | WRITE32(sess->back_channel.maxops); | |
3368 | WRITE32(sess->back_channel.maxreqs); | |
3369 | WRITE32(sess->back_channel.nr_rdma_attrs); | |
3370 | ADJUST_ARGS(); | |
3371 | ||
3372 | if (sess->back_channel.nr_rdma_attrs) { | |
3373 | RESERVE_SPACE(4); | |
3374 | WRITE32(sess->back_channel.rdma_attrs); | |
3375 | ADJUST_ARGS(); | |
3376 | } | |
3377 | return 0; | |
2db134eb AA |
3378 | } |
3379 | ||
3380 | static __be32 | |
57b7b43b | 3381 | nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3382 | struct nfsd4_destroy_session *destroy_session) |
3383 | { | |
2db134eb AA |
3384 | return nfserr; |
3385 | } | |
3386 | ||
e1ca12df | 3387 | static __be32 |
d1829b38 | 3388 | nfsd4_encode_free_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
e1ca12df BS |
3389 | struct nfsd4_free_stateid *free_stateid) |
3390 | { | |
3391 | __be32 *p; | |
3392 | ||
3393 | if (nfserr) | |
3394 | return nfserr; | |
3395 | ||
3396 | RESERVE_SPACE(4); | |
d1829b38 | 3397 | *p++ = nfserr; |
e1ca12df BS |
3398 | ADJUST_ARGS(); |
3399 | return nfserr; | |
3400 | } | |
3401 | ||
c47d832b | 3402 | static __be32 |
57b7b43b | 3403 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3404 | struct nfsd4_sequence *seq) |
3405 | { | |
bc749ca4 | 3406 | __be32 *p; |
b85d4c01 BH |
3407 | |
3408 | if (nfserr) | |
3409 | return nfserr; | |
3410 | ||
3411 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20); | |
3412 | WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3413 | WRITE32(seq->seqid); | |
3414 | WRITE32(seq->slotid); | |
b7d7ca35 BF |
3415 | /* Note slotid's are numbered from zero: */ |
3416 | WRITE32(seq->maxslots - 1); /* sr_highest_slotid */ | |
3417 | WRITE32(seq->maxslots - 1); /* sr_target_highest_slotid */ | |
0d7bb719 | 3418 | WRITE32(seq->status_flags); |
b85d4c01 BH |
3419 | |
3420 | ADJUST_ARGS(); | |
557ce264 | 3421 | resp->cstate.datap = p; /* DRC cache data pointer */ |
b85d4c01 | 3422 | return 0; |
2db134eb AA |
3423 | } |
3424 | ||
2355c596 | 3425 | static __be32 |
57b7b43b | 3426 | nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
17456804 BS |
3427 | struct nfsd4_test_stateid *test_stateid) |
3428 | { | |
03cfb420 | 3429 | struct nfsd4_test_stateid_id *stateid, *next; |
17456804 | 3430 | __be32 *p; |
17456804 | 3431 | |
03cfb420 | 3432 | RESERVE_SPACE(4 + (4 * test_stateid->ts_num_ids)); |
17456804 | 3433 | *p++ = htonl(test_stateid->ts_num_ids); |
17456804 | 3434 | |
03cfb420 | 3435 | list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) { |
02f5fde5 | 3436 | *p++ = stateid->ts_id_status; |
17456804 | 3437 | } |
17456804 | 3438 | |
03cfb420 | 3439 | ADJUST_ARGS(); |
17456804 BS |
3440 | return nfserr; |
3441 | } | |
3442 | ||
695e12f8 BH |
3443 | static __be32 |
3444 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
3445 | { | |
3446 | return nfserr; | |
3447 | } | |
3448 | ||
3449 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
3450 | ||
2db134eb AA |
3451 | /* |
3452 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
3453 | * since we don't need to filter out obsolete ops as this is | |
3454 | * done in the decoding phase. | |
3455 | */ | |
695e12f8 | 3456 | static nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
3457 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
3458 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
3459 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
3460 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
3461 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
3462 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
3463 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
3464 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
3465 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
3466 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
3467 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
3468 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
3469 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
3470 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
3471 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3472 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 3473 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
3474 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
3475 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
3476 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3477 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3478 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3479 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
3480 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
3481 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
3482 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
3483 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
3484 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
3485 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3486 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3487 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
3488 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
3489 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
3490 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
3491 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3492 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
3493 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3494 | |
3495 | /* NFSv4.1 operations */ | |
3496 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
1d1bc8f2 | 3497 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
2db134eb AA |
3498 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
3499 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
3500 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session, | |
e1ca12df | 3501 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_free_stateid, |
2db134eb AA |
3502 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3503 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, | |
3504 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
3505 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
3506 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
3507 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
22b6dee8 | 3508 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
2db134eb AA |
3509 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
3510 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
17456804 | 3511 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, |
2db134eb AA |
3512 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3513 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
3514 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
695e12f8 BH |
3515 | }; |
3516 | ||
496c262c AA |
3517 | /* |
3518 | * Calculate the total amount of memory that the compound response has taken | |
58e7b33a | 3519 | * after encoding the current operation with pad. |
496c262c | 3520 | * |
58e7b33a MJ |
3521 | * pad: if operation is non-idempotent, pad was calculate by op_rsize_bop() |
3522 | * which was specified at nfsd4_operation, else pad is zero. | |
496c262c | 3523 | * |
58e7b33a | 3524 | * Compare this length to the session se_fmaxresp_sz and se_fmaxresp_cached. |
496c262c AA |
3525 | * |
3526 | * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so | |
3527 | * will be at least a page and will therefore hold the xdr_buf head. | |
3528 | */ | |
57b7b43b | 3529 | __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad) |
496c262c | 3530 | { |
496c262c | 3531 | struct xdr_buf *xb = &resp->rqstp->rq_res; |
496c262c AA |
3532 | struct nfsd4_session *session = NULL; |
3533 | struct nfsd4_slot *slot = resp->cstate.slot; | |
58e7b33a | 3534 | u32 length, tlen = 0; |
496c262c AA |
3535 | |
3536 | if (!nfsd4_has_session(&resp->cstate)) | |
58e7b33a | 3537 | return 0; |
496c262c AA |
3538 | |
3539 | session = resp->cstate.session; | |
58e7b33a MJ |
3540 | if (session == NULL) |
3541 | return 0; | |
496c262c AA |
3542 | |
3543 | if (xb->page_len == 0) { | |
3544 | length = (char *)resp->p - (char *)xb->head[0].iov_base + pad; | |
3545 | } else { | |
3546 | if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0) | |
3547 | tlen = (char *)resp->p - (char *)xb->tail[0].iov_base; | |
3548 | ||
3549 | length = xb->head[0].iov_len + xb->page_len + tlen + pad; | |
3550 | } | |
3551 | dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__, | |
3552 | length, xb->page_len, tlen, pad); | |
3553 | ||
58e7b33a MJ |
3554 | if (length > session->se_fchannel.maxresp_sz) |
3555 | return nfserr_rep_too_big; | |
3556 | ||
73e79482 | 3557 | if ((slot->sl_flags & NFSD4_SLOT_CACHETHIS) && |
58e7b33a | 3558 | length > session->se_fchannel.maxresp_cached) |
496c262c | 3559 | return nfserr_rep_too_big_to_cache; |
58e7b33a MJ |
3560 | |
3561 | return 0; | |
496c262c AA |
3562 | } |
3563 | ||
1da177e4 LT |
3564 | void |
3565 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3566 | { | |
2ebbc012 | 3567 | __be32 *statp; |
bc749ca4 | 3568 | __be32 *p; |
1da177e4 LT |
3569 | |
3570 | RESERVE_SPACE(8); | |
3571 | WRITE32(op->opnum); | |
3572 | statp = p++; /* to be backfilled at the end */ | |
3573 | ADJUST_ARGS(); | |
3574 | ||
695e12f8 BH |
3575 | if (op->opnum == OP_ILLEGAL) |
3576 | goto status; | |
3577 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || | |
3578 | !nfsd4_enc_ops[op->opnum]); | |
3579 | op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u); | |
496c262c | 3580 | /* nfsd4_check_drc_limit guarantees enough room for error status */ |
58e7b33a MJ |
3581 | if (!op->status) |
3582 | op->status = nfsd4_check_resp_size(resp, 0); | |
695e12f8 | 3583 | status: |
1da177e4 LT |
3584 | /* |
3585 | * Note: We write the status directly, instead of using WRITE32(), | |
3586 | * since it is already in network byte order. | |
3587 | */ | |
3588 | *statp = op->status; | |
3589 | } | |
3590 | ||
3591 | /* | |
3592 | * Encode the reply stored in the stateowner reply cache | |
3593 | * | |
3594 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
3595 | * previously sent already encoded operation. | |
3596 | * | |
3597 | * called with nfs4_lock_state() held | |
3598 | */ | |
3599 | void | |
3600 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3601 | { | |
bc749ca4 | 3602 | __be32 *p; |
1da177e4 LT |
3603 | struct nfs4_replay *rp = op->replay; |
3604 | ||
3605 | BUG_ON(!rp); | |
3606 | ||
3607 | RESERVE_SPACE(8); | |
3608 | WRITE32(op->opnum); | |
3609 | *p++ = rp->rp_status; /* already xdr'ed */ | |
3610 | ADJUST_ARGS(); | |
3611 | ||
3612 | RESERVE_SPACE(rp->rp_buflen); | |
3613 | WRITEMEM(rp->rp_buf, rp->rp_buflen); | |
3614 | ADJUST_ARGS(); | |
3615 | } | |
3616 | ||
1da177e4 | 3617 | int |
2ebbc012 | 3618 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
3619 | { |
3620 | return xdr_ressize_check(rqstp, p); | |
3621 | } | |
3622 | ||
3e98abff | 3623 | int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp) |
1da177e4 | 3624 | { |
3e98abff BF |
3625 | struct svc_rqst *rqstp = rq; |
3626 | struct nfsd4_compoundargs *args = rqstp->rq_argp; | |
3627 | ||
1da177e4 LT |
3628 | if (args->ops != args->iops) { |
3629 | kfree(args->ops); | |
3630 | args->ops = args->iops; | |
3631 | } | |
f99d49ad JJ |
3632 | kfree(args->tmpp); |
3633 | args->tmpp = NULL; | |
1da177e4 LT |
3634 | while (args->to_free) { |
3635 | struct tmpbuf *tb = args->to_free; | |
3636 | args->to_free = tb->next; | |
3637 | tb->release(tb->buf); | |
3638 | kfree(tb); | |
3639 | } | |
3e98abff | 3640 | return 1; |
1da177e4 LT |
3641 | } |
3642 | ||
3643 | int | |
2ebbc012 | 3644 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 3645 | { |
1da177e4 LT |
3646 | args->p = p; |
3647 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
3648 | args->pagelist = rqstp->rq_arg.pages; | |
3649 | args->pagelen = rqstp->rq_arg.page_len; | |
3650 | args->tmpp = NULL; | |
3651 | args->to_free = NULL; | |
3652 | args->ops = args->iops; | |
3653 | args->rqstp = rqstp; | |
3654 | ||
3e98abff | 3655 | return !nfsd4_decode_compound(args); |
1da177e4 LT |
3656 | } |
3657 | ||
3658 | int | |
2ebbc012 | 3659 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
3660 | { |
3661 | /* | |
3662 | * All that remains is to write the tag and operation count... | |
3663 | */ | |
557ce264 | 3664 | struct nfsd4_compound_state *cs = &resp->cstate; |
1da177e4 LT |
3665 | struct kvec *iov; |
3666 | p = resp->tagp; | |
3667 | *p++ = htonl(resp->taglen); | |
3668 | memcpy(p, resp->tag, resp->taglen); | |
3669 | p += XDR_QUADLEN(resp->taglen); | |
3670 | *p++ = htonl(resp->opcnt); | |
3671 | ||
3672 | if (rqstp->rq_res.page_len) | |
3673 | iov = &rqstp->rq_res.tail[0]; | |
3674 | else | |
3675 | iov = &rqstp->rq_res.head[0]; | |
3676 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; | |
3677 | BUG_ON(iov->iov_len > PAGE_SIZE); | |
26c0c75e BF |
3678 | if (nfsd4_has_session(cs)) { |
3679 | if (cs->status != nfserr_replay_cache) { | |
3680 | nfsd4_store_cache_entry(resp); | |
73e79482 | 3681 | cs->slot->sl_flags &= ~NFSD4_SLOT_INUSE; |
26c0c75e | 3682 | } |
d7682988 BH |
3683 | /* Renew the clientid on success and on replay */ |
3684 | release_session_client(cs->session); | |
76407f76 | 3685 | nfsd4_put_session(cs->session); |
da3846a2 | 3686 | } |
1da177e4 LT |
3687 | return 1; |
3688 | } | |
3689 | ||
3690 | /* | |
3691 | * Local variables: | |
3692 | * c-basic-offset: 8 | |
3693 | * End: | |
3694 | */ |