Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Server-side XDR for NFSv4 |
3 | * | |
4 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Kendrick Smith <kmsmith@umich.edu> | |
8 | * Andy Adamson <andros@umich.edu> | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or without | |
11 | * modification, are permitted provided that the following conditions | |
12 | * are met: | |
13 | * | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions and the following disclaimer. | |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in the | |
18 | * documentation and/or other materials provided with the distribution. | |
19 | * 3. Neither the name of the University nor the names of its | |
20 | * contributors may be used to endorse or promote products derived | |
21 | * from this software without specific prior written permission. | |
22 | * | |
23 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
24 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
25 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
26 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
30 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
31 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
32 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
33 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
34 | * | |
35 | * TODO: Neil Brown made the following observation: We currently | |
36 | * initially reserve NFSD_BUFSIZE space on the transmit queue and | |
37 | * never release any of that until the request is complete. | |
38 | * It would be good to calculate a new maximum response size while | |
39 | * decoding the COMPOUND, and call svc_reserve with this number | |
40 | * at the end of nfs4svc_decode_compoundargs. | |
41 | */ | |
42 | ||
5a0e3ad6 | 43 | #include <linux/slab.h> |
1da177e4 | 44 | #include <linux/namei.h> |
341eb184 | 45 | #include <linux/statfs.h> |
0733d213 | 46 | #include <linux/utsname.h> |
17456804 | 47 | #include <linux/pagemap.h> |
4796f457 | 48 | #include <linux/sunrpc/svcauth_gss.h> |
9a74af21 | 49 | |
2ca72e17 BF |
50 | #include "idmap.h" |
51 | #include "acl.h" | |
9a74af21 | 52 | #include "xdr4.h" |
0a3adade | 53 | #include "vfs.h" |
17456804 | 54 | #include "state.h" |
1091006c | 55 | #include "cache.h" |
3d733711 | 56 | #include "netns.h" |
2ca72e17 | 57 | |
18032ca0 DQ |
58 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
59 | #include <linux/security.h> | |
60 | #endif | |
61 | ||
62 | ||
1da177e4 LT |
63 | #define NFSDDBG_FACILITY NFSDDBG_XDR |
64 | ||
42ca0993 BF |
65 | /* |
66 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing | |
67 | * directory in order to indicate to the client that a filesystem boundary is present | |
68 | * We use a fixed fsid for a referral | |
69 | */ | |
70 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL | |
71 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL | |
72 | ||
b37ad28b | 73 | static __be32 |
a36b1725 | 74 | check_filename(char *str, int len) |
1da177e4 LT |
75 | { |
76 | int i; | |
77 | ||
78 | if (len == 0) | |
79 | return nfserr_inval; | |
80 | if (isdotent(str, len)) | |
a36b1725 | 81 | return nfserr_badname; |
1da177e4 LT |
82 | for (i = 0; i < len; i++) |
83 | if (str[i] == '/') | |
a36b1725 | 84 | return nfserr_badname; |
1da177e4 LT |
85 | return 0; |
86 | } | |
87 | ||
1da177e4 | 88 | #define DECODE_HEAD \ |
2ebbc012 | 89 | __be32 *p; \ |
b37ad28b | 90 | __be32 status |
1da177e4 LT |
91 | #define DECODE_TAIL \ |
92 | status = 0; \ | |
93 | out: \ | |
94 | return status; \ | |
95 | xdr_error: \ | |
817cb9d4 CL |
96 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
97 | __FILE__, __LINE__); \ | |
1da177e4 LT |
98 | status = nfserr_bad_xdr; \ |
99 | goto out | |
100 | ||
101 | #define READ32(x) (x) = ntohl(*p++) | |
102 | #define READ64(x) do { \ | |
103 | (x) = (u64)ntohl(*p++) << 32; \ | |
104 | (x) |= ntohl(*p++); \ | |
105 | } while (0) | |
106 | #define READTIME(x) do { \ | |
107 | p++; \ | |
108 | (x) = ntohl(*p++); \ | |
109 | p++; \ | |
110 | } while (0) | |
111 | #define READMEM(x,nbytes) do { \ | |
112 | x = (char *)p; \ | |
113 | p += XDR_QUADLEN(nbytes); \ | |
114 | } while (0) | |
115 | #define SAVEMEM(x,nbytes) do { \ | |
116 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
117 | savemem(argp, p, nbytes) : \ | |
118 | (char *)p)) { \ | |
817cb9d4 CL |
119 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
120 | __FILE__, __LINE__); \ | |
1da177e4 LT |
121 | goto xdr_error; \ |
122 | } \ | |
123 | p += XDR_QUADLEN(nbytes); \ | |
124 | } while (0) | |
125 | #define COPYMEM(x,nbytes) do { \ | |
126 | memcpy((x), p, nbytes); \ | |
127 | p += XDR_QUADLEN(nbytes); \ | |
128 | } while (0) | |
129 | ||
130 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ | |
131 | #define READ_BUF(nbytes) do { \ | |
132 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ | |
133 | p = argp->p; \ | |
134 | argp->p += XDR_QUADLEN(nbytes); \ | |
135 | } else if (!(p = read_buf(argp, nbytes))) { \ | |
817cb9d4 CL |
136 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
137 | __FILE__, __LINE__); \ | |
1da177e4 LT |
138 | goto xdr_error; \ |
139 | } \ | |
140 | } while (0) | |
141 | ||
ca2a05aa | 142 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
1da177e4 LT |
143 | { |
144 | /* We want more bytes than seem to be available. | |
145 | * Maybe we need a new page, maybe we have just run out | |
146 | */ | |
ca2a05aa | 147 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
2ebbc012 | 148 | __be32 *p; |
1da177e4 LT |
149 | if (avail + argp->pagelen < nbytes) |
150 | return NULL; | |
151 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ | |
152 | return NULL; | |
153 | /* ok, we can do it with the current plus the next page */ | |
154 | if (nbytes <= sizeof(argp->tmp)) | |
155 | p = argp->tmp; | |
156 | else { | |
f99d49ad | 157 | kfree(argp->tmpp); |
1da177e4 LT |
158 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
159 | if (!p) | |
160 | return NULL; | |
161 | ||
162 | } | |
ca2a05aa BF |
163 | /* |
164 | * The following memcpy is safe because read_buf is always | |
165 | * called with nbytes > avail, and the two cases above both | |
166 | * guarantee p points to at least nbytes bytes. | |
167 | */ | |
1da177e4 LT |
168 | memcpy(p, argp->p, avail); |
169 | /* step to next page */ | |
170 | argp->p = page_address(argp->pagelist[0]); | |
171 | argp->pagelist++; | |
172 | if (argp->pagelen < PAGE_SIZE) { | |
2bc3c117 | 173 | argp->end = argp->p + (argp->pagelen>>2); |
1da177e4 LT |
174 | argp->pagelen = 0; |
175 | } else { | |
2bc3c117 | 176 | argp->end = argp->p + (PAGE_SIZE>>2); |
1da177e4 LT |
177 | argp->pagelen -= PAGE_SIZE; |
178 | } | |
179 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); | |
180 | argp->p += XDR_QUADLEN(nbytes - avail); | |
181 | return p; | |
182 | } | |
183 | ||
60adfc50 AA |
184 | static int zero_clientid(clientid_t *clid) |
185 | { | |
186 | return (clid->cl_boot == 0) && (clid->cl_id == 0); | |
187 | } | |
188 | ||
1da177e4 LT |
189 | static int |
190 | defer_free(struct nfsd4_compoundargs *argp, | |
191 | void (*release)(const void *), void *p) | |
192 | { | |
193 | struct tmpbuf *tb; | |
194 | ||
195 | tb = kmalloc(sizeof(*tb), GFP_KERNEL); | |
196 | if (!tb) | |
197 | return -ENOMEM; | |
198 | tb->buf = p; | |
199 | tb->release = release; | |
200 | tb->next = argp->to_free; | |
201 | argp->to_free = tb; | |
202 | return 0; | |
203 | } | |
204 | ||
2ebbc012 | 205 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
1da177e4 | 206 | { |
1da177e4 | 207 | if (p == argp->tmp) { |
67114fe6 | 208 | p = kmemdup(argp->tmp, nbytes, GFP_KERNEL); |
a4db5fe5 BF |
209 | if (!p) |
210 | return NULL; | |
1da177e4 | 211 | } else { |
73dff8be | 212 | BUG_ON(p != argp->tmpp); |
1da177e4 LT |
213 | argp->tmpp = NULL; |
214 | } | |
215 | if (defer_free(argp, kfree, p)) { | |
a4db5fe5 | 216 | kfree(p); |
1da177e4 LT |
217 | return NULL; |
218 | } else | |
219 | return (char *)p; | |
220 | } | |
221 | ||
b37ad28b | 222 | static __be32 |
1da177e4 LT |
223 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
224 | { | |
225 | u32 bmlen; | |
226 | DECODE_HEAD; | |
227 | ||
228 | bmval[0] = 0; | |
229 | bmval[1] = 0; | |
7e705706 | 230 | bmval[2] = 0; |
1da177e4 LT |
231 | |
232 | READ_BUF(4); | |
233 | READ32(bmlen); | |
234 | if (bmlen > 1000) | |
235 | goto xdr_error; | |
236 | ||
237 | READ_BUF(bmlen << 2); | |
238 | if (bmlen > 0) | |
239 | READ32(bmval[0]); | |
240 | if (bmlen > 1) | |
241 | READ32(bmval[1]); | |
7e705706 AA |
242 | if (bmlen > 2) |
243 | READ32(bmval[2]); | |
1da177e4 LT |
244 | |
245 | DECODE_TAIL; | |
246 | } | |
247 | ||
b37ad28b | 248 | static __be32 |
3c8e0316 | 249 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, |
18032ca0 DQ |
250 | struct iattr *iattr, struct nfs4_acl **acl, |
251 | struct xdr_netobj *label) | |
1da177e4 LT |
252 | { |
253 | int expected_len, len = 0; | |
254 | u32 dummy32; | |
255 | char *buf; | |
b8dd7b9a | 256 | int host_err; |
1da177e4 LT |
257 | |
258 | DECODE_HEAD; | |
259 | iattr->ia_valid = 0; | |
260 | if ((status = nfsd4_decode_bitmap(argp, bmval))) | |
261 | return status; | |
262 | ||
1da177e4 LT |
263 | READ_BUF(4); |
264 | READ32(expected_len); | |
265 | ||
266 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
267 | READ_BUF(8); | |
268 | len += 8; | |
269 | READ64(iattr->ia_size); | |
270 | iattr->ia_valid |= ATTR_SIZE; | |
271 | } | |
272 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
64a817cf | 273 | u32 nace; |
28e05dd8 | 274 | struct nfs4_ace *ace; |
1da177e4 LT |
275 | |
276 | READ_BUF(4); len += 4; | |
277 | READ32(nace); | |
278 | ||
28e05dd8 BF |
279 | if (nace > NFS4_ACL_MAX) |
280 | return nfserr_resource; | |
281 | ||
282 | *acl = nfs4_acl_new(nace); | |
1da177e4 | 283 | if (*acl == NULL) { |
b8dd7b9a | 284 | host_err = -ENOMEM; |
1da177e4 LT |
285 | goto out_nfserr; |
286 | } | |
28e05dd8 | 287 | defer_free(argp, kfree, *acl); |
1da177e4 | 288 | |
28e05dd8 BF |
289 | (*acl)->naces = nace; |
290 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { | |
1da177e4 | 291 | READ_BUF(16); len += 16; |
28e05dd8 BF |
292 | READ32(ace->type); |
293 | READ32(ace->flag); | |
294 | READ32(ace->access_mask); | |
1da177e4 LT |
295 | READ32(dummy32); |
296 | READ_BUF(dummy32); | |
297 | len += XDR_QUADLEN(dummy32) << 2; | |
298 | READMEM(buf, dummy32); | |
28e05dd8 | 299 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
3c726023 | 300 | status = nfs_ok; |
28e05dd8 | 301 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ab8e4aee | 302 | ; |
28e05dd8 | 303 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
3c726023 | 304 | status = nfsd_map_name_to_gid(argp->rqstp, |
ab8e4aee | 305 | buf, dummy32, &ace->who_gid); |
1da177e4 | 306 | else |
3c726023 | 307 | status = nfsd_map_name_to_uid(argp->rqstp, |
ab8e4aee | 308 | buf, dummy32, &ace->who_uid); |
3c726023 BF |
309 | if (status) |
310 | return status; | |
1da177e4 LT |
311 | } |
312 | } else | |
313 | *acl = NULL; | |
314 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
315 | READ_BUF(4); | |
316 | len += 4; | |
317 | READ32(iattr->ia_mode); | |
318 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); | |
319 | iattr->ia_valid |= ATTR_MODE; | |
320 | } | |
321 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
322 | READ_BUF(4); | |
323 | len += 4; | |
324 | READ32(dummy32); | |
325 | READ_BUF(dummy32); | |
326 | len += (XDR_QUADLEN(dummy32) << 2); | |
327 | READMEM(buf, dummy32); | |
47c85291 N |
328 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
329 | return status; | |
1da177e4 LT |
330 | iattr->ia_valid |= ATTR_UID; |
331 | } | |
332 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
333 | READ_BUF(4); | |
334 | len += 4; | |
335 | READ32(dummy32); | |
336 | READ_BUF(dummy32); | |
337 | len += (XDR_QUADLEN(dummy32) << 2); | |
338 | READMEM(buf, dummy32); | |
47c85291 N |
339 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
340 | return status; | |
1da177e4 LT |
341 | iattr->ia_valid |= ATTR_GID; |
342 | } | |
343 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
344 | READ_BUF(4); | |
345 | len += 4; | |
346 | READ32(dummy32); | |
347 | switch (dummy32) { | |
348 | case NFS4_SET_TO_CLIENT_TIME: | |
349 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
350 | all 32 bits of 'nseconds'. */ | |
351 | READ_BUF(12); | |
352 | len += 12; | |
bf8d9097 | 353 | READ64(iattr->ia_atime.tv_sec); |
1da177e4 LT |
354 | READ32(iattr->ia_atime.tv_nsec); |
355 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) | |
356 | return nfserr_inval; | |
357 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); | |
358 | break; | |
359 | case NFS4_SET_TO_SERVER_TIME: | |
360 | iattr->ia_valid |= ATTR_ATIME; | |
361 | break; | |
362 | default: | |
363 | goto xdr_error; | |
364 | } | |
365 | } | |
1da177e4 LT |
366 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
367 | READ_BUF(4); | |
368 | len += 4; | |
369 | READ32(dummy32); | |
370 | switch (dummy32) { | |
371 | case NFS4_SET_TO_CLIENT_TIME: | |
372 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore | |
373 | all 32 bits of 'nseconds'. */ | |
374 | READ_BUF(12); | |
375 | len += 12; | |
bf8d9097 | 376 | READ64(iattr->ia_mtime.tv_sec); |
1da177e4 LT |
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 | } | |
18032ca0 DQ |
389 | |
390 | label->len = 0; | |
391 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL | |
392 | if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) { | |
393 | READ_BUF(4); | |
394 | len += 4; | |
395 | READ32(dummy32); /* lfs: we don't use it */ | |
396 | READ_BUF(4); | |
397 | len += 4; | |
398 | READ32(dummy32); /* pi: we don't use it either */ | |
399 | READ_BUF(4); | |
400 | len += 4; | |
401 | READ32(dummy32); | |
402 | READ_BUF(dummy32); | |
403 | if (dummy32 > NFSD4_MAX_SEC_LABEL_LEN) | |
404 | return nfserr_badlabel; | |
405 | len += (XDR_QUADLEN(dummy32) << 2); | |
406 | READMEM(buf, dummy32); | |
407 | label->data = kzalloc(dummy32 + 1, GFP_KERNEL); | |
408 | if (!label->data) | |
409 | return nfserr_jukebox; | |
410 | defer_free(argp, kfree, label->data); | |
411 | memcpy(label->data, buf, dummy32); | |
412 | } | |
413 | #endif | |
414 | ||
3c8e0316 YZ |
415 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
416 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 | |
417 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) | |
418 | READ_BUF(expected_len - len); | |
419 | else if (len != expected_len) | |
1da177e4 LT |
420 | goto xdr_error; |
421 | ||
422 | DECODE_TAIL; | |
423 | ||
424 | out_nfserr: | |
b8dd7b9a | 425 | status = nfserrno(host_err); |
1da177e4 LT |
426 | goto out; |
427 | } | |
428 | ||
e31a1b66 BH |
429 | static __be32 |
430 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
431 | { | |
432 | DECODE_HEAD; | |
433 | ||
434 | READ_BUF(sizeof(stateid_t)); | |
435 | READ32(sid->si_generation); | |
436 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
437 | ||
438 | DECODE_TAIL; | |
439 | } | |
440 | ||
b37ad28b | 441 | static __be32 |
1da177e4 LT |
442 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
443 | { | |
444 | DECODE_HEAD; | |
445 | ||
446 | READ_BUF(4); | |
447 | READ32(access->ac_req_access); | |
448 | ||
449 | DECODE_TAIL; | |
450 | } | |
451 | ||
acb2887e BF |
452 | static __be32 nfsd4_decode_cb_sec(struct nfsd4_compoundargs *argp, struct nfsd4_cb_sec *cbs) |
453 | { | |
454 | DECODE_HEAD; | |
12fc3e92 | 455 | u32 dummy, uid, gid; |
acb2887e BF |
456 | char *machine_name; |
457 | int i; | |
458 | int nr_secflavs; | |
459 | ||
460 | /* callback_sec_params4 */ | |
461 | READ_BUF(4); | |
462 | READ32(nr_secflavs); | |
12fc3e92 | 463 | cbs->flavor = (u32)(-1); |
acb2887e BF |
464 | for (i = 0; i < nr_secflavs; ++i) { |
465 | READ_BUF(4); | |
466 | READ32(dummy); | |
467 | switch (dummy) { | |
468 | case RPC_AUTH_NULL: | |
469 | /* Nothing to read */ | |
12fc3e92 BF |
470 | if (cbs->flavor == (u32)(-1)) |
471 | cbs->flavor = RPC_AUTH_NULL; | |
acb2887e BF |
472 | break; |
473 | case RPC_AUTH_UNIX: | |
474 | READ_BUF(8); | |
475 | /* stamp */ | |
476 | READ32(dummy); | |
477 | ||
478 | /* machine name */ | |
479 | READ32(dummy); | |
480 | READ_BUF(dummy); | |
481 | SAVEMEM(machine_name, dummy); | |
482 | ||
483 | /* uid, gid */ | |
484 | READ_BUF(8); | |
12fc3e92 BF |
485 | READ32(uid); |
486 | READ32(gid); | |
acb2887e BF |
487 | |
488 | /* more gids */ | |
489 | READ_BUF(4); | |
490 | READ32(dummy); | |
491 | READ_BUF(dummy * 4); | |
12fc3e92 | 492 | if (cbs->flavor == (u32)(-1)) { |
03bc6d1c EB |
493 | kuid_t kuid = make_kuid(&init_user_ns, uid); |
494 | kgid_t kgid = make_kgid(&init_user_ns, gid); | |
495 | if (uid_valid(kuid) && gid_valid(kgid)) { | |
496 | cbs->uid = kuid; | |
497 | cbs->gid = kgid; | |
498 | cbs->flavor = RPC_AUTH_UNIX; | |
499 | } else { | |
500 | dprintk("RPC_AUTH_UNIX with invalid" | |
501 | "uid or gid ignoring!\n"); | |
502 | } | |
12fc3e92 | 503 | } |
acb2887e BF |
504 | break; |
505 | case RPC_AUTH_GSS: | |
506 | dprintk("RPC_AUTH_GSS callback secflavor " | |
507 | "not supported!\n"); | |
508 | READ_BUF(8); | |
509 | /* gcbp_service */ | |
510 | READ32(dummy); | |
511 | /* gcbp_handle_from_server */ | |
512 | READ32(dummy); | |
513 | READ_BUF(dummy); | |
514 | p += XDR_QUADLEN(dummy); | |
515 | /* gcbp_handle_from_client */ | |
516 | READ_BUF(4); | |
517 | READ32(dummy); | |
518 | READ_BUF(dummy); | |
519 | break; | |
520 | default: | |
521 | dprintk("Illegal callback secflavor\n"); | |
522 | return nfserr_inval; | |
523 | } | |
524 | } | |
525 | DECODE_TAIL; | |
526 | } | |
527 | ||
cb73a9f4 BF |
528 | static __be32 nfsd4_decode_backchannel_ctl(struct nfsd4_compoundargs *argp, struct nfsd4_backchannel_ctl *bc) |
529 | { | |
530 | DECODE_HEAD; | |
531 | ||
532 | READ_BUF(4); | |
533 | READ32(bc->bc_cb_program); | |
534 | nfsd4_decode_cb_sec(argp, &bc->bc_cb_sec); | |
535 | ||
536 | DECODE_TAIL; | |
537 | } | |
538 | ||
1d1bc8f2 BF |
539 | static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) |
540 | { | |
541 | DECODE_HEAD; | |
1d1bc8f2 BF |
542 | |
543 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 8); | |
544 | COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
545 | READ32(bcts->dir); | |
6ce2357f BS |
546 | /* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker |
547 | * could help us figure out we should be using it. */ | |
1d1bc8f2 BF |
548 | DECODE_TAIL; |
549 | } | |
550 | ||
b37ad28b | 551 | static __be32 |
1da177e4 LT |
552 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
553 | { | |
554 | DECODE_HEAD; | |
555 | ||
e31a1b66 | 556 | READ_BUF(4); |
1da177e4 | 557 | READ32(close->cl_seqid); |
e31a1b66 | 558 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
1da177e4 LT |
559 | |
560 | DECODE_TAIL; | |
561 | } | |
562 | ||
563 | ||
b37ad28b | 564 | static __be32 |
1da177e4 LT |
565 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
566 | { | |
567 | DECODE_HEAD; | |
568 | ||
569 | READ_BUF(12); | |
570 | READ64(commit->co_offset); | |
571 | READ32(commit->co_count); | |
572 | ||
573 | DECODE_TAIL; | |
574 | } | |
575 | ||
b37ad28b | 576 | static __be32 |
1da177e4 LT |
577 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
578 | { | |
579 | DECODE_HEAD; | |
580 | ||
581 | READ_BUF(4); | |
582 | READ32(create->cr_type); | |
583 | switch (create->cr_type) { | |
584 | case NF4LNK: | |
585 | READ_BUF(4); | |
586 | READ32(create->cr_linklen); | |
587 | READ_BUF(create->cr_linklen); | |
588 | SAVEMEM(create->cr_linkname, create->cr_linklen); | |
589 | break; | |
590 | case NF4BLK: | |
591 | case NF4CHR: | |
592 | READ_BUF(8); | |
593 | READ32(create->cr_specdata1); | |
594 | READ32(create->cr_specdata2); | |
595 | break; | |
596 | case NF4SOCK: | |
597 | case NF4FIFO: | |
598 | case NF4DIR: | |
599 | default: | |
600 | break; | |
601 | } | |
602 | ||
603 | READ_BUF(4); | |
604 | READ32(create->cr_namelen); | |
605 | READ_BUF(create->cr_namelen); | |
606 | SAVEMEM(create->cr_name, create->cr_namelen); | |
a36b1725 | 607 | if ((status = check_filename(create->cr_name, create->cr_namelen))) |
1da177e4 LT |
608 | return status; |
609 | ||
3c8e0316 | 610 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
18032ca0 | 611 | &create->cr_acl, &create->cr_label); |
c0d6fc8a | 612 | if (status) |
1da177e4 LT |
613 | goto out; |
614 | ||
615 | DECODE_TAIL; | |
616 | } | |
617 | ||
b37ad28b | 618 | static inline __be32 |
1da177e4 LT |
619 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
620 | { | |
e31a1b66 | 621 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
1da177e4 LT |
622 | } |
623 | ||
b37ad28b | 624 | static inline __be32 |
1da177e4 LT |
625 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
626 | { | |
627 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); | |
628 | } | |
629 | ||
b37ad28b | 630 | static __be32 |
1da177e4 LT |
631 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
632 | { | |
633 | DECODE_HEAD; | |
634 | ||
635 | READ_BUF(4); | |
636 | READ32(link->li_namelen); | |
637 | READ_BUF(link->li_namelen); | |
638 | SAVEMEM(link->li_name, link->li_namelen); | |
a36b1725 | 639 | if ((status = check_filename(link->li_name, link->li_namelen))) |
1da177e4 LT |
640 | return status; |
641 | ||
642 | DECODE_TAIL; | |
643 | } | |
644 | ||
b37ad28b | 645 | static __be32 |
1da177e4 LT |
646 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
647 | { | |
648 | DECODE_HEAD; | |
649 | ||
1da177e4 LT |
650 | /* |
651 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) | |
652 | */ | |
653 | READ_BUF(28); | |
654 | READ32(lock->lk_type); | |
655 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) | |
656 | goto xdr_error; | |
657 | READ32(lock->lk_reclaim); | |
658 | READ64(lock->lk_offset); | |
659 | READ64(lock->lk_length); | |
660 | READ32(lock->lk_is_new); | |
661 | ||
662 | if (lock->lk_is_new) { | |
e31a1b66 | 663 | READ_BUF(4); |
1da177e4 | 664 | READ32(lock->lk_new_open_seqid); |
e31a1b66 BH |
665 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
666 | if (status) | |
667 | return status; | |
668 | READ_BUF(8 + sizeof(clientid_t)); | |
1da177e4 LT |
669 | READ32(lock->lk_new_lock_seqid); |
670 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); | |
671 | READ32(lock->lk_new_owner.len); | |
672 | READ_BUF(lock->lk_new_owner.len); | |
673 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); | |
674 | } else { | |
e31a1b66 BH |
675 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
676 | if (status) | |
677 | return status; | |
678 | READ_BUF(4); | |
1da177e4 LT |
679 | READ32(lock->lk_old_lock_seqid); |
680 | } | |
681 | ||
682 | DECODE_TAIL; | |
683 | } | |
684 | ||
b37ad28b | 685 | static __be32 |
1da177e4 LT |
686 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
687 | { | |
688 | DECODE_HEAD; | |
689 | ||
690 | READ_BUF(32); | |
691 | READ32(lockt->lt_type); | |
692 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) | |
693 | goto xdr_error; | |
694 | READ64(lockt->lt_offset); | |
695 | READ64(lockt->lt_length); | |
696 | COPYMEM(&lockt->lt_clientid, 8); | |
697 | READ32(lockt->lt_owner.len); | |
698 | READ_BUF(lockt->lt_owner.len); | |
699 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); | |
700 | ||
701 | DECODE_TAIL; | |
702 | } | |
703 | ||
b37ad28b | 704 | static __be32 |
1da177e4 LT |
705 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
706 | { | |
707 | DECODE_HEAD; | |
708 | ||
e31a1b66 | 709 | READ_BUF(8); |
1da177e4 LT |
710 | READ32(locku->lu_type); |
711 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) | |
712 | goto xdr_error; | |
713 | READ32(locku->lu_seqid); | |
e31a1b66 BH |
714 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
715 | if (status) | |
716 | return status; | |
717 | READ_BUF(16); | |
1da177e4 LT |
718 | READ64(locku->lu_offset); |
719 | READ64(locku->lu_length); | |
720 | ||
721 | DECODE_TAIL; | |
722 | } | |
723 | ||
b37ad28b | 724 | static __be32 |
1da177e4 LT |
725 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
726 | { | |
727 | DECODE_HEAD; | |
728 | ||
729 | READ_BUF(4); | |
730 | READ32(lookup->lo_len); | |
731 | READ_BUF(lookup->lo_len); | |
732 | SAVEMEM(lookup->lo_name, lookup->lo_len); | |
a36b1725 | 733 | if ((status = check_filename(lookup->lo_name, lookup->lo_len))) |
1da177e4 LT |
734 | return status; |
735 | ||
736 | DECODE_TAIL; | |
737 | } | |
738 | ||
2c8bd7e0 | 739 | static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when) |
04f9e664 BF |
740 | { |
741 | __be32 *p; | |
742 | u32 w; | |
743 | ||
744 | READ_BUF(4); | |
745 | READ32(w); | |
2c8bd7e0 BH |
746 | *share_access = w & NFS4_SHARE_ACCESS_MASK; |
747 | *deleg_want = w & NFS4_SHARE_WANT_MASK; | |
748 | if (deleg_when) | |
749 | *deleg_when = w & NFS4_SHARE_WHEN_MASK; | |
750 | ||
04f9e664 BF |
751 | switch (w & NFS4_SHARE_ACCESS_MASK) { |
752 | case NFS4_SHARE_ACCESS_READ: | |
753 | case NFS4_SHARE_ACCESS_WRITE: | |
754 | case NFS4_SHARE_ACCESS_BOTH: | |
755 | break; | |
756 | default: | |
757 | return nfserr_bad_xdr; | |
758 | } | |
fc0d14fe | 759 | w &= ~NFS4_SHARE_ACCESS_MASK; |
04f9e664 BF |
760 | if (!w) |
761 | return nfs_ok; | |
762 | if (!argp->minorversion) | |
763 | return nfserr_bad_xdr; | |
764 | switch (w & NFS4_SHARE_WANT_MASK) { | |
765 | case NFS4_SHARE_WANT_NO_PREFERENCE: | |
766 | case NFS4_SHARE_WANT_READ_DELEG: | |
767 | case NFS4_SHARE_WANT_WRITE_DELEG: | |
768 | case NFS4_SHARE_WANT_ANY_DELEG: | |
769 | case NFS4_SHARE_WANT_NO_DELEG: | |
770 | case NFS4_SHARE_WANT_CANCEL: | |
771 | break; | |
772 | default: | |
773 | return nfserr_bad_xdr; | |
774 | } | |
92bac8c5 | 775 | w &= ~NFS4_SHARE_WANT_MASK; |
04f9e664 BF |
776 | if (!w) |
777 | return nfs_ok; | |
2c8bd7e0 BH |
778 | |
779 | if (!deleg_when) /* open_downgrade */ | |
780 | return nfserr_inval; | |
04f9e664 BF |
781 | switch (w) { |
782 | case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL: | |
783 | case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED: | |
c668fc6d BH |
784 | case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL | |
785 | NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED): | |
04f9e664 BF |
786 | return nfs_ok; |
787 | } | |
788 | xdr_error: | |
789 | return nfserr_bad_xdr; | |
790 | } | |
791 | ||
792 | static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x) | |
793 | { | |
794 | __be32 *p; | |
795 | ||
796 | READ_BUF(4); | |
797 | READ32(*x); | |
798 | /* Note: unlinke access bits, deny bits may be zero. */ | |
01cd4afa | 799 | if (*x & ~NFS4_SHARE_DENY_BOTH) |
04f9e664 BF |
800 | return nfserr_bad_xdr; |
801 | return nfs_ok; | |
802 | xdr_error: | |
803 | return nfserr_bad_xdr; | |
804 | } | |
805 | ||
a084daf5 BF |
806 | static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o) |
807 | { | |
808 | __be32 *p; | |
809 | ||
810 | READ_BUF(4); | |
811 | READ32(o->len); | |
812 | ||
813 | if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT) | |
814 | return nfserr_bad_xdr; | |
815 | ||
816 | READ_BUF(o->len); | |
817 | SAVEMEM(o->data, o->len); | |
818 | return nfs_ok; | |
819 | xdr_error: | |
820 | return nfserr_bad_xdr; | |
821 | } | |
822 | ||
b37ad28b | 823 | static __be32 |
1da177e4 LT |
824 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
825 | { | |
826 | DECODE_HEAD; | |
2c8bd7e0 | 827 | u32 dummy; |
1da177e4 LT |
828 | |
829 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
830 | open->op_iattr.ia_valid = 0; | |
fe0750e5 | 831 | open->op_openowner = NULL; |
1da177e4 | 832 | |
9d313b17 | 833 | open->op_xdr_error = 0; |
1da177e4 | 834 | /* seqid, share_access, share_deny, clientid, ownerlen */ |
04f9e664 | 835 | READ_BUF(4); |
1da177e4 | 836 | READ32(open->op_seqid); |
2c8bd7e0 BH |
837 | /* decode, yet ignore deleg_when until supported */ |
838 | status = nfsd4_decode_share_access(argp, &open->op_share_access, | |
839 | &open->op_deleg_want, &dummy); | |
04f9e664 BF |
840 | if (status) |
841 | goto xdr_error; | |
842 | status = nfsd4_decode_share_deny(argp, &open->op_share_deny); | |
843 | if (status) | |
844 | goto xdr_error; | |
a084daf5 | 845 | READ_BUF(sizeof(clientid_t)); |
1da177e4 | 846 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); |
a084daf5 BF |
847 | status = nfsd4_decode_opaque(argp, &open->op_owner); |
848 | if (status) | |
849 | goto xdr_error; | |
850 | READ_BUF(4); | |
1da177e4 LT |
851 | READ32(open->op_create); |
852 | switch (open->op_create) { | |
853 | case NFS4_OPEN_NOCREATE: | |
854 | break; | |
855 | case NFS4_OPEN_CREATE: | |
856 | READ_BUF(4); | |
857 | READ32(open->op_createmode); | |
858 | switch (open->op_createmode) { | |
859 | case NFS4_CREATE_UNCHECKED: | |
860 | case NFS4_CREATE_GUARDED: | |
c0d6fc8a | 861 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
18032ca0 | 862 | &open->op_iattr, &open->op_acl, &open->op_label); |
c0d6fc8a | 863 | if (status) |
1da177e4 LT |
864 | goto out; |
865 | break; | |
866 | case NFS4_CREATE_EXCLUSIVE: | |
ab4684d1 CL |
867 | READ_BUF(NFS4_VERIFIER_SIZE); |
868 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 869 | break; |
79fb54ab BH |
870 | case NFS4_CREATE_EXCLUSIVE4_1: |
871 | if (argp->minorversion < 1) | |
872 | goto xdr_error; | |
ab4684d1 CL |
873 | READ_BUF(NFS4_VERIFIER_SIZE); |
874 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); | |
79fb54ab | 875 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
18032ca0 | 876 | &open->op_iattr, &open->op_acl, &open->op_label); |
79fb54ab BH |
877 | if (status) |
878 | goto out; | |
879 | break; | |
1da177e4 LT |
880 | default: |
881 | goto xdr_error; | |
882 | } | |
883 | break; | |
884 | default: | |
885 | goto xdr_error; | |
886 | } | |
887 | ||
888 | /* open_claim */ | |
889 | READ_BUF(4); | |
890 | READ32(open->op_claim_type); | |
891 | switch (open->op_claim_type) { | |
892 | case NFS4_OPEN_CLAIM_NULL: | |
893 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
894 | READ_BUF(4); | |
895 | READ32(open->op_fname.len); | |
896 | READ_BUF(open->op_fname.len); | |
897 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 898 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
899 | return status; |
900 | break; | |
901 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
902 | READ_BUF(4); | |
903 | READ32(open->op_delegate_type); | |
904 | break; | |
905 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
e31a1b66 BH |
906 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
907 | if (status) | |
908 | return status; | |
909 | READ_BUF(4); | |
1da177e4 LT |
910 | READ32(open->op_fname.len); |
911 | READ_BUF(open->op_fname.len); | |
912 | SAVEMEM(open->op_fname.data, open->op_fname.len); | |
a36b1725 | 913 | if ((status = check_filename(open->op_fname.data, open->op_fname.len))) |
1da177e4 LT |
914 | return status; |
915 | break; | |
8b289b2c BF |
916 | case NFS4_OPEN_CLAIM_FH: |
917 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
918 | if (argp->minorversion < 1) | |
919 | goto xdr_error; | |
920 | /* void */ | |
921 | break; | |
922 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
923 | if (argp->minorversion < 1) | |
924 | goto xdr_error; | |
925 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); | |
926 | if (status) | |
927 | return status; | |
928 | break; | |
1da177e4 LT |
929 | default: |
930 | goto xdr_error; | |
931 | } | |
932 | ||
933 | DECODE_TAIL; | |
934 | } | |
935 | ||
b37ad28b | 936 | static __be32 |
1da177e4 LT |
937 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
938 | { | |
939 | DECODE_HEAD; | |
940 | ||
e31a1b66 BH |
941 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
942 | if (status) | |
943 | return status; | |
944 | READ_BUF(4); | |
1da177e4 LT |
945 | READ32(open_conf->oc_seqid); |
946 | ||
947 | DECODE_TAIL; | |
948 | } | |
949 | ||
b37ad28b | 950 | static __be32 |
1da177e4 LT |
951 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
952 | { | |
953 | DECODE_HEAD; | |
954 | ||
e31a1b66 BH |
955 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
956 | if (status) | |
957 | return status; | |
04f9e664 | 958 | READ_BUF(4); |
1da177e4 | 959 | READ32(open_down->od_seqid); |
2c8bd7e0 BH |
960 | status = nfsd4_decode_share_access(argp, &open_down->od_share_access, |
961 | &open_down->od_deleg_want, NULL); | |
04f9e664 BF |
962 | if (status) |
963 | return status; | |
964 | status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny); | |
965 | if (status) | |
966 | return status; | |
1da177e4 LT |
967 | DECODE_TAIL; |
968 | } | |
969 | ||
b37ad28b | 970 | static __be32 |
1da177e4 LT |
971 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
972 | { | |
973 | DECODE_HEAD; | |
974 | ||
975 | READ_BUF(4); | |
976 | READ32(putfh->pf_fhlen); | |
977 | if (putfh->pf_fhlen > NFS4_FHSIZE) | |
978 | goto xdr_error; | |
979 | READ_BUF(putfh->pf_fhlen); | |
980 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); | |
981 | ||
982 | DECODE_TAIL; | |
983 | } | |
984 | ||
b37ad28b | 985 | static __be32 |
1da177e4 LT |
986 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
987 | { | |
988 | DECODE_HEAD; | |
989 | ||
e31a1b66 BH |
990 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
991 | if (status) | |
992 | return status; | |
993 | READ_BUF(12); | |
1da177e4 LT |
994 | READ64(read->rd_offset); |
995 | READ32(read->rd_length); | |
996 | ||
997 | DECODE_TAIL; | |
998 | } | |
999 | ||
b37ad28b | 1000 | static __be32 |
1da177e4 LT |
1001 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
1002 | { | |
1003 | DECODE_HEAD; | |
1004 | ||
1005 | READ_BUF(24); | |
1006 | READ64(readdir->rd_cookie); | |
1007 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); | |
1008 | READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ | |
1009 | READ32(readdir->rd_maxcount); | |
1010 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) | |
1011 | goto out; | |
1012 | ||
1013 | DECODE_TAIL; | |
1014 | } | |
1015 | ||
b37ad28b | 1016 | static __be32 |
1da177e4 LT |
1017 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
1018 | { | |
1019 | DECODE_HEAD; | |
1020 | ||
1021 | READ_BUF(4); | |
1022 | READ32(remove->rm_namelen); | |
1023 | READ_BUF(remove->rm_namelen); | |
1024 | SAVEMEM(remove->rm_name, remove->rm_namelen); | |
a36b1725 | 1025 | if ((status = check_filename(remove->rm_name, remove->rm_namelen))) |
1da177e4 LT |
1026 | return status; |
1027 | ||
1028 | DECODE_TAIL; | |
1029 | } | |
1030 | ||
b37ad28b | 1031 | static __be32 |
1da177e4 LT |
1032 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
1033 | { | |
1034 | DECODE_HEAD; | |
1035 | ||
1036 | READ_BUF(4); | |
1037 | READ32(rename->rn_snamelen); | |
1038 | READ_BUF(rename->rn_snamelen + 4); | |
1039 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); | |
1040 | READ32(rename->rn_tnamelen); | |
1041 | READ_BUF(rename->rn_tnamelen); | |
1042 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); | |
a36b1725 | 1043 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen))) |
1da177e4 | 1044 | return status; |
a36b1725 | 1045 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen))) |
1da177e4 LT |
1046 | return status; |
1047 | ||
1048 | DECODE_TAIL; | |
1049 | } | |
1050 | ||
b37ad28b | 1051 | static __be32 |
1da177e4 LT |
1052 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
1053 | { | |
1054 | DECODE_HEAD; | |
1055 | ||
1056 | READ_BUF(sizeof(clientid_t)); | |
1057 | COPYMEM(clientid, sizeof(clientid_t)); | |
1058 | ||
1059 | DECODE_TAIL; | |
1060 | } | |
1061 | ||
dcb488a3 AA |
1062 | static __be32 |
1063 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
1064 | struct nfsd4_secinfo *secinfo) | |
1065 | { | |
1066 | DECODE_HEAD; | |
1067 | ||
1068 | READ_BUF(4); | |
1069 | READ32(secinfo->si_namelen); | |
1070 | READ_BUF(secinfo->si_namelen); | |
1071 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); | |
a36b1725 | 1072 | status = check_filename(secinfo->si_name, secinfo->si_namelen); |
dcb488a3 AA |
1073 | if (status) |
1074 | return status; | |
1075 | DECODE_TAIL; | |
1076 | } | |
1077 | ||
04f4ad16 BF |
1078 | static __be32 |
1079 | nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, | |
1080 | struct nfsd4_secinfo_no_name *sin) | |
1081 | { | |
1082 | DECODE_HEAD; | |
1083 | ||
1084 | READ_BUF(4); | |
1085 | READ32(sin->sin_style); | |
1086 | DECODE_TAIL; | |
1087 | } | |
1088 | ||
b37ad28b | 1089 | static __be32 |
1da177e4 LT |
1090 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
1091 | { | |
e31a1b66 | 1092 | __be32 status; |
1da177e4 | 1093 | |
e31a1b66 BH |
1094 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
1095 | if (status) | |
1096 | return status; | |
3c8e0316 | 1097 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
18032ca0 | 1098 | &setattr->sa_acl, &setattr->sa_label); |
1da177e4 LT |
1099 | } |
1100 | ||
b37ad28b | 1101 | static __be32 |
1da177e4 LT |
1102 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
1103 | { | |
1104 | DECODE_HEAD; | |
1105 | ||
ab4684d1 CL |
1106 | READ_BUF(NFS4_VERIFIER_SIZE); |
1107 | COPYMEM(setclientid->se_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 | 1108 | |
a084daf5 BF |
1109 | status = nfsd4_decode_opaque(argp, &setclientid->se_name); |
1110 | if (status) | |
1111 | return nfserr_bad_xdr; | |
1112 | READ_BUF(8); | |
1da177e4 LT |
1113 | READ32(setclientid->se_callback_prog); |
1114 | READ32(setclientid->se_callback_netid_len); | |
1115 | ||
1116 | READ_BUF(setclientid->se_callback_netid_len + 4); | |
1117 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); | |
1118 | READ32(setclientid->se_callback_addr_len); | |
1119 | ||
1120 | READ_BUF(setclientid->se_callback_addr_len + 4); | |
1121 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); | |
1122 | READ32(setclientid->se_callback_ident); | |
1123 | ||
1124 | DECODE_TAIL; | |
1125 | } | |
1126 | ||
b37ad28b | 1127 | static __be32 |
1da177e4 LT |
1128 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
1129 | { | |
1130 | DECODE_HEAD; | |
1131 | ||
ab4684d1 | 1132 | READ_BUF(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 1133 | COPYMEM(&scd_c->sc_clientid, 8); |
ab4684d1 | 1134 | COPYMEM(&scd_c->sc_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
1135 | |
1136 | DECODE_TAIL; | |
1137 | } | |
1138 | ||
1139 | /* Also used for NVERIFY */ | |
b37ad28b | 1140 | static __be32 |
1da177e4 LT |
1141 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
1142 | { | |
1da177e4 LT |
1143 | DECODE_HEAD; |
1144 | ||
1145 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) | |
1146 | goto out; | |
1147 | ||
1148 | /* For convenience's sake, we compare raw xdr'd attributes in | |
e5f95703 BF |
1149 | * nfsd4_proc_verify */ |
1150 | ||
1da177e4 LT |
1151 | READ_BUF(4); |
1152 | READ32(verify->ve_attrlen); | |
1153 | READ_BUF(verify->ve_attrlen); | |
1154 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); | |
1155 | ||
1156 | DECODE_TAIL; | |
1157 | } | |
1158 | ||
b37ad28b | 1159 | static __be32 |
1da177e4 LT |
1160 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
1161 | { | |
1162 | int avail; | |
1da177e4 LT |
1163 | int len; |
1164 | DECODE_HEAD; | |
1165 | ||
e31a1b66 BH |
1166 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
1167 | if (status) | |
1168 | return status; | |
1169 | READ_BUF(16); | |
1da177e4 LT |
1170 | READ64(write->wr_offset); |
1171 | READ32(write->wr_stable_how); | |
1172 | if (write->wr_stable_how > 2) | |
1173 | goto xdr_error; | |
1174 | READ32(write->wr_buflen); | |
1175 | ||
1176 | /* Sorry .. no magic macros for this.. * | |
1177 | * READ_BUF(write->wr_buflen); | |
1178 | * SAVEMEM(write->wr_buf, write->wr_buflen); | |
1179 | */ | |
1180 | avail = (char*)argp->end - (char*)argp->p; | |
1181 | if (avail + argp->pagelen < write->wr_buflen) { | |
817cb9d4 CL |
1182 | dprintk("NFSD: xdr error (%s:%d)\n", |
1183 | __FILE__, __LINE__); | |
1da177e4 LT |
1184 | goto xdr_error; |
1185 | } | |
70cc7f75 BF |
1186 | write->wr_head.iov_base = p; |
1187 | write->wr_head.iov_len = avail; | |
5a80a54d | 1188 | WARN_ON(avail != (XDR_QUADLEN(avail) << 2)); |
70cc7f75 | 1189 | write->wr_pagelist = argp->pagelist; |
5a80a54d BF |
1190 | |
1191 | len = XDR_QUADLEN(write->wr_buflen) << 2; | |
1192 | if (len >= avail) { | |
1193 | int pages; | |
1194 | ||
1195 | len -= avail; | |
1196 | ||
1197 | pages = len >> PAGE_SHIFT; | |
1198 | argp->pagelist += pages; | |
1199 | argp->pagelen -= pages * PAGE_SIZE; | |
1200 | len -= pages * PAGE_SIZE; | |
1201 | ||
1202 | argp->p = (__be32 *)page_address(argp->pagelist[0]); | |
1203 | argp->end = argp->p + XDR_QUADLEN(PAGE_SIZE); | |
1da177e4 | 1204 | } |
5a80a54d | 1205 | argp->p += XDR_QUADLEN(len); |
1da177e4 LT |
1206 | |
1207 | DECODE_TAIL; | |
1208 | } | |
1209 | ||
b37ad28b | 1210 | static __be32 |
1da177e4 LT |
1211 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
1212 | { | |
1213 | DECODE_HEAD; | |
1214 | ||
1215 | READ_BUF(12); | |
1216 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); | |
1217 | READ32(rlockowner->rl_owner.len); | |
1218 | READ_BUF(rlockowner->rl_owner.len); | |
1219 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); | |
1220 | ||
60adfc50 AA |
1221 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1222 | return nfserr_inval; | |
1da177e4 LT |
1223 | DECODE_TAIL; |
1224 | } | |
1225 | ||
2db134eb AA |
1226 | static __be32 |
1227 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
0733d213 | 1228 | struct nfsd4_exchange_id *exid) |
2db134eb | 1229 | { |
5afa040b | 1230 | int dummy, tmp; |
0733d213 AA |
1231 | DECODE_HEAD; |
1232 | ||
1233 | READ_BUF(NFS4_VERIFIER_SIZE); | |
1234 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); | |
1235 | ||
a084daf5 BF |
1236 | status = nfsd4_decode_opaque(argp, &exid->clname); |
1237 | if (status) | |
1238 | return nfserr_bad_xdr; | |
0733d213 AA |
1239 | |
1240 | READ_BUF(4); | |
1241 | READ32(exid->flags); | |
1242 | ||
1243 | /* Ignore state_protect4_a */ | |
1244 | READ_BUF(4); | |
1245 | READ32(exid->spa_how); | |
1246 | switch (exid->spa_how) { | |
1247 | case SP4_NONE: | |
1248 | break; | |
1249 | case SP4_MACH_CRED: | |
1250 | /* spo_must_enforce */ | |
1251 | READ_BUF(4); | |
1252 | READ32(dummy); | |
1253 | READ_BUF(dummy * 4); | |
1254 | p += dummy; | |
1255 | ||
1256 | /* spo_must_allow */ | |
1257 | READ_BUF(4); | |
1258 | READ32(dummy); | |
1259 | READ_BUF(dummy * 4); | |
1260 | p += dummy; | |
1261 | break; | |
1262 | case SP4_SSV: | |
1263 | /* ssp_ops */ | |
1264 | READ_BUF(4); | |
1265 | READ32(dummy); | |
1266 | READ_BUF(dummy * 4); | |
1267 | p += dummy; | |
1268 | ||
1269 | READ_BUF(4); | |
1270 | READ32(dummy); | |
1271 | READ_BUF(dummy * 4); | |
1272 | p += dummy; | |
1273 | ||
1274 | /* ssp_hash_algs<> */ | |
1275 | READ_BUF(4); | |
5afa040b MJ |
1276 | READ32(tmp); |
1277 | while (tmp--) { | |
1278 | READ_BUF(4); | |
1279 | READ32(dummy); | |
1280 | READ_BUF(dummy); | |
1281 | p += XDR_QUADLEN(dummy); | |
1282 | } | |
0733d213 AA |
1283 | |
1284 | /* ssp_encr_algs<> */ | |
1285 | READ_BUF(4); | |
5afa040b MJ |
1286 | READ32(tmp); |
1287 | while (tmp--) { | |
1288 | READ_BUF(4); | |
1289 | READ32(dummy); | |
1290 | READ_BUF(dummy); | |
1291 | p += XDR_QUADLEN(dummy); | |
1292 | } | |
0733d213 AA |
1293 | |
1294 | /* ssp_window and ssp_num_gss_handles */ | |
1295 | READ_BUF(8); | |
1296 | READ32(dummy); | |
1297 | READ32(dummy); | |
1298 | break; | |
1299 | default: | |
1300 | goto xdr_error; | |
1301 | } | |
1302 | ||
1303 | /* Ignore Implementation ID */ | |
1304 | READ_BUF(4); /* nfs_impl_id4 array length */ | |
1305 | READ32(dummy); | |
1306 | ||
1307 | if (dummy > 1) | |
1308 | goto xdr_error; | |
1309 | ||
1310 | if (dummy == 1) { | |
1311 | /* nii_domain */ | |
1312 | READ_BUF(4); | |
1313 | READ32(dummy); | |
1314 | READ_BUF(dummy); | |
1315 | p += XDR_QUADLEN(dummy); | |
1316 | ||
1317 | /* nii_name */ | |
1318 | READ_BUF(4); | |
1319 | READ32(dummy); | |
1320 | READ_BUF(dummy); | |
1321 | p += XDR_QUADLEN(dummy); | |
1322 | ||
1323 | /* nii_date */ | |
1324 | READ_BUF(12); | |
1325 | p += 3; | |
1326 | } | |
1327 | DECODE_TAIL; | |
2db134eb AA |
1328 | } |
1329 | ||
1330 | static __be32 | |
1331 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1332 | struct nfsd4_create_session *sess) | |
1333 | { | |
ec6b5d7b | 1334 | DECODE_HEAD; |
ec6b5d7b | 1335 | u32 dummy; |
ec6b5d7b AA |
1336 | |
1337 | READ_BUF(16); | |
1338 | COPYMEM(&sess->clientid, 8); | |
1339 | READ32(sess->seqid); | |
1340 | READ32(sess->flags); | |
1341 | ||
1342 | /* Fore channel attrs */ | |
1343 | READ_BUF(28); | |
1344 | READ32(dummy); /* headerpadsz is always 0 */ | |
1345 | READ32(sess->fore_channel.maxreq_sz); | |
1346 | READ32(sess->fore_channel.maxresp_sz); | |
1347 | READ32(sess->fore_channel.maxresp_cached); | |
1348 | READ32(sess->fore_channel.maxops); | |
1349 | READ32(sess->fore_channel.maxreqs); | |
1350 | READ32(sess->fore_channel.nr_rdma_attrs); | |
1351 | if (sess->fore_channel.nr_rdma_attrs == 1) { | |
1352 | READ_BUF(4); | |
1353 | READ32(sess->fore_channel.rdma_attrs); | |
1354 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { | |
1355 | dprintk("Too many fore channel attr bitmaps!\n"); | |
1356 | goto xdr_error; | |
1357 | } | |
1358 | ||
1359 | /* Back channel attrs */ | |
1360 | READ_BUF(28); | |
1361 | READ32(dummy); /* headerpadsz is always 0 */ | |
1362 | READ32(sess->back_channel.maxreq_sz); | |
1363 | READ32(sess->back_channel.maxresp_sz); | |
1364 | READ32(sess->back_channel.maxresp_cached); | |
1365 | READ32(sess->back_channel.maxops); | |
1366 | READ32(sess->back_channel.maxreqs); | |
1367 | READ32(sess->back_channel.nr_rdma_attrs); | |
1368 | if (sess->back_channel.nr_rdma_attrs == 1) { | |
1369 | READ_BUF(4); | |
1370 | READ32(sess->back_channel.rdma_attrs); | |
1371 | } else if (sess->back_channel.nr_rdma_attrs > 1) { | |
1372 | dprintk("Too many back channel attr bitmaps!\n"); | |
1373 | goto xdr_error; | |
1374 | } | |
1375 | ||
acb2887e | 1376 | READ_BUF(4); |
ec6b5d7b | 1377 | READ32(sess->callback_prog); |
acb2887e | 1378 | nfsd4_decode_cb_sec(argp, &sess->cb_sec); |
ec6b5d7b | 1379 | DECODE_TAIL; |
2db134eb AA |
1380 | } |
1381 | ||
1382 | static __be32 | |
1383 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, | |
1384 | struct nfsd4_destroy_session *destroy_session) | |
1385 | { | |
e10e0cfc BH |
1386 | DECODE_HEAD; |
1387 | READ_BUF(NFS4_MAX_SESSIONID_LEN); | |
1388 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1389 | ||
1390 | DECODE_TAIL; | |
2db134eb AA |
1391 | } |
1392 | ||
e1ca12df BS |
1393 | static __be32 |
1394 | nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp, | |
1395 | struct nfsd4_free_stateid *free_stateid) | |
1396 | { | |
1397 | DECODE_HEAD; | |
1398 | ||
1399 | READ_BUF(sizeof(stateid_t)); | |
1400 | READ32(free_stateid->fr_stateid.si_generation); | |
1401 | COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t)); | |
1402 | ||
1403 | DECODE_TAIL; | |
1404 | } | |
1405 | ||
2db134eb AA |
1406 | static __be32 |
1407 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, | |
1408 | struct nfsd4_sequence *seq) | |
1409 | { | |
b85d4c01 BH |
1410 | DECODE_HEAD; |
1411 | ||
1412 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); | |
1413 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
1414 | READ32(seq->seqid); | |
1415 | READ32(seq->slotid); | |
1416 | READ32(seq->maxslots); | |
1417 | READ32(seq->cachethis); | |
1418 | ||
1419 | DECODE_TAIL; | |
2db134eb AA |
1420 | } |
1421 | ||
17456804 BS |
1422 | static __be32 |
1423 | nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid) | |
1424 | { | |
17456804 | 1425 | int i; |
03cfb420 BS |
1426 | __be32 *p, status; |
1427 | struct nfsd4_test_stateid_id *stateid; | |
17456804 BS |
1428 | |
1429 | READ_BUF(4); | |
1430 | test_stateid->ts_num_ids = ntohl(*p++); | |
1431 | ||
03cfb420 | 1432 | INIT_LIST_HEAD(&test_stateid->ts_stateid_list); |
17456804 BS |
1433 | |
1434 | for (i = 0; i < test_stateid->ts_num_ids; i++) { | |
03cfb420 BS |
1435 | stateid = kmalloc(sizeof(struct nfsd4_test_stateid_id), GFP_KERNEL); |
1436 | if (!stateid) { | |
afcf6792 | 1437 | status = nfserrno(-ENOMEM); |
03cfb420 BS |
1438 | goto out; |
1439 | } | |
1440 | ||
1441 | defer_free(argp, kfree, stateid); | |
1442 | INIT_LIST_HEAD(&stateid->ts_id_list); | |
1443 | list_add_tail(&stateid->ts_id_list, &test_stateid->ts_stateid_list); | |
1444 | ||
1445 | status = nfsd4_decode_stateid(argp, &stateid->ts_id_stateid); | |
17456804 | 1446 | if (status) |
03cfb420 | 1447 | goto out; |
17456804 BS |
1448 | } |
1449 | ||
1450 | status = 0; | |
1451 | out: | |
1452 | return status; | |
1453 | xdr_error: | |
1454 | dprintk("NFSD: xdr error (%s:%d)\n", __FILE__, __LINE__); | |
1455 | status = nfserr_bad_xdr; | |
1456 | goto out; | |
1457 | } | |
1458 | ||
345c2842 MJ |
1459 | static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_clientid *dc) |
1460 | { | |
1461 | DECODE_HEAD; | |
1462 | ||
1463 | READ_BUF(8); | |
1464 | COPYMEM(&dc->clientid, 8); | |
1465 | ||
1466 | DECODE_TAIL; | |
1467 | } | |
1468 | ||
4dc6ec00 BF |
1469 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) |
1470 | { | |
1471 | DECODE_HEAD; | |
1472 | ||
1473 | READ_BUF(4); | |
1474 | READ32(rc->rca_one_fs); | |
1475 | ||
1476 | DECODE_TAIL; | |
1477 | } | |
1478 | ||
347e0ad9 BH |
1479 | static __be32 |
1480 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
1481 | { | |
1482 | return nfs_ok; | |
1483 | } | |
1484 | ||
3c375c6f BH |
1485 | static __be32 |
1486 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
1487 | { | |
1e685ec2 | 1488 | return nfserr_notsupp; |
3c375c6f BH |
1489 | } |
1490 | ||
347e0ad9 BH |
1491 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
1492 | ||
1493 | static nfsd4_dec nfsd4_dec_ops[] = { | |
ad1060c8 BF |
1494 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1495 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1496 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1497 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1498 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1499 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1500 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1501 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1502 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1503 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1504 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1505 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1506 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1507 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1508 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1509 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1510 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1511 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
1512 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1513 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
a1c8c4d1 | 1514 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_noop, |
ad1060c8 BF |
1515 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
1516 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1517 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1518 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1519 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1520 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1521 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
1522 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1523 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1524 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1525 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1526 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
1527 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
1528 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1529 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1530 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
347e0ad9 BH |
1531 | }; |
1532 | ||
2db134eb | 1533 | static nfsd4_dec nfsd41_dec_ops[] = { |
9064caae RD |
1534 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
1535 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
1536 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
1537 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
1538 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1539 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
1540 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
1541 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1542 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
1543 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
1544 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
1545 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
1546 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
1547 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
1548 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1549 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
1550 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1551 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1552 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
1553 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
1554 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1555 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1556 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
1557 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
1558 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
1559 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
1560 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
1561 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1562 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1563 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
1564 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
1565 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
1566 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1567 | [OP_SETCLIENTID_CONFIRM]= (nfsd4_dec)nfsd4_decode_notsupp, | |
1568 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
1569 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
1570 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_notsupp, | |
2db134eb AA |
1571 | |
1572 | /* new operations for NFSv4.1 */ | |
cb73a9f4 | 1573 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_backchannel_ctl, |
1d1bc8f2 | 1574 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
9064caae RD |
1575 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
1576 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
1577 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
e1ca12df | 1578 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, |
9064caae RD |
1579 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
1580 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1581 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1582 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1583 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
1584 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
04f4ad16 | 1585 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
9064caae RD |
1586 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
1587 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
17456804 | 1588 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid, |
9064caae | 1589 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
345c2842 | 1590 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, |
4dc6ec00 | 1591 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
2db134eb AA |
1592 | }; |
1593 | ||
f2feb96b BH |
1594 | struct nfsd4_minorversion_ops { |
1595 | nfsd4_dec *decoders; | |
1596 | int nops; | |
1597 | }; | |
1598 | ||
1599 | static struct nfsd4_minorversion_ops nfsd4_minorversion[] = { | |
ad1060c8 | 1600 | [0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) }, |
2db134eb | 1601 | [1] = { nfsd41_dec_ops, ARRAY_SIZE(nfsd41_dec_ops) }, |
4bdc33ed | 1602 | [2] = { nfsd41_dec_ops, ARRAY_SIZE(nfsd41_dec_ops) }, |
f2feb96b BH |
1603 | }; |
1604 | ||
b37ad28b | 1605 | static __be32 |
1da177e4 LT |
1606 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
1607 | { | |
1608 | DECODE_HEAD; | |
1609 | struct nfsd4_op *op; | |
f2feb96b | 1610 | struct nfsd4_minorversion_ops *ops; |
1091006c | 1611 | bool cachethis = false; |
1da177e4 LT |
1612 | int i; |
1613 | ||
1da177e4 LT |
1614 | READ_BUF(4); |
1615 | READ32(argp->taglen); | |
1616 | READ_BUF(argp->taglen + 8); | |
1617 | SAVEMEM(argp->tag, argp->taglen); | |
1618 | READ32(argp->minorversion); | |
1619 | READ32(argp->opcnt); | |
1620 | ||
1621 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
1622 | goto xdr_error; | |
1623 | if (argp->opcnt > 100) | |
1624 | goto xdr_error; | |
1625 | ||
e8c96f8c | 1626 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
1da177e4 LT |
1627 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1628 | if (!argp->ops) { | |
1629 | argp->ops = argp->iops; | |
817cb9d4 | 1630 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
1631 | goto xdr_error; |
1632 | } | |
1633 | } | |
1634 | ||
f2feb96b | 1635 | if (argp->minorversion >= ARRAY_SIZE(nfsd4_minorversion)) |
30cff1ff BH |
1636 | argp->opcnt = 0; |
1637 | ||
f2feb96b | 1638 | ops = &nfsd4_minorversion[argp->minorversion]; |
1da177e4 LT |
1639 | for (i = 0; i < argp->opcnt; i++) { |
1640 | op = &argp->ops[i]; | |
1641 | op->replay = NULL; | |
1642 | ||
8a61b18c BF |
1643 | READ_BUF(4); |
1644 | READ32(op->opnum); | |
1da177e4 | 1645 | |
de3cab79 | 1646 | if (op->opnum >= FIRST_NFS4_OP && op->opnum <= LAST_NFS4_OP) |
f2feb96b | 1647 | op->status = ops->decoders[op->opnum](argp, &op->u); |
347e0ad9 | 1648 | else { |
1da177e4 LT |
1649 | op->opnum = OP_ILLEGAL; |
1650 | op->status = nfserr_op_illegal; | |
1da177e4 LT |
1651 | } |
1652 | ||
1653 | if (op->status) { | |
1654 | argp->opcnt = i+1; | |
1655 | break; | |
1656 | } | |
1091006c BF |
1657 | /* |
1658 | * We'll try to cache the result in the DRC if any one | |
1659 | * op in the compound wants to be cached: | |
1660 | */ | |
1661 | cachethis |= nfsd4_cache_this_op(op); | |
1da177e4 | 1662 | } |
1091006c BF |
1663 | /* Sessions make the DRC unnecessary: */ |
1664 | if (argp->minorversion) | |
1665 | cachethis = false; | |
1666 | argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; | |
1da177e4 LT |
1667 | |
1668 | DECODE_TAIL; | |
1669 | } | |
1da177e4 | 1670 | |
1da177e4 LT |
1671 | #define WRITE32(n) *p++ = htonl(n) |
1672 | #define WRITE64(n) do { \ | |
1673 | *p++ = htonl((u32)((n) >> 32)); \ | |
1674 | *p++ = htonl((u32)(n)); \ | |
1675 | } while (0) | |
5108b276 | 1676 | #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \ |
1da177e4 LT |
1677 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ |
1678 | memcpy(p, ptr, nbytes); \ | |
1679 | p += XDR_QUADLEN(nbytes); \ | |
5108b276 | 1680 | }} while (0) |
c654b8a9 BF |
1681 | |
1682 | static void write32(__be32 **p, u32 n) | |
1683 | { | |
45eaa1c1 | 1684 | *(*p)++ = htonl(n); |
c654b8a9 BF |
1685 | } |
1686 | ||
1687 | static void write64(__be32 **p, u64 n) | |
1688 | { | |
45eaa1c1 | 1689 | write32(p, (n >> 32)); |
c654b8a9 BF |
1690 | write32(p, (u32)n); |
1691 | } | |
1692 | ||
1693 | static void write_change(__be32 **p, struct kstat *stat, struct inode *inode) | |
1694 | { | |
1695 | if (IS_I_VERSION(inode)) { | |
1696 | write64(p, inode->i_version); | |
1697 | } else { | |
1698 | write32(p, stat->ctime.tv_sec); | |
1699 | write32(p, stat->ctime.tv_nsec); | |
1700 | } | |
1701 | } | |
1702 | ||
1703 | static void write_cinfo(__be32 **p, struct nfsd4_change_info *c) | |
1704 | { | |
1705 | write32(p, c->atomic); | |
1706 | if (c->change_supported) { | |
1707 | write64(p, c->before_change); | |
1708 | write64(p, c->after_change); | |
1709 | } else { | |
1710 | write32(p, c->before_ctime_sec); | |
1711 | write32(p, c->before_ctime_nsec); | |
1712 | write32(p, c->after_ctime_sec); | |
1713 | write32(p, c->after_ctime_nsec); | |
1714 | } | |
1715 | } | |
1da177e4 LT |
1716 | |
1717 | #define RESERVE_SPACE(nbytes) do { \ | |
1718 | p = resp->p; \ | |
1719 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ | |
1720 | } while (0) | |
1721 | #define ADJUST_ARGS() resp->p = p | |
1722 | ||
81c3f413 | 1723 | /* Encode as an array of strings the string given with components |
e7a0444a | 1724 | * separated @sep, escaped with esc_enter and esc_exit. |
81c3f413 | 1725 | */ |
e7a0444a WAA |
1726 | static __be32 nfsd4_encode_components_esc(char sep, char *components, |
1727 | __be32 **pp, int *buflen, | |
1728 | char esc_enter, char esc_exit) | |
81c3f413 | 1729 | { |
2ebbc012 AV |
1730 | __be32 *p = *pp; |
1731 | __be32 *countp = p; | |
81c3f413 | 1732 | int strlen, count=0; |
e7a0444a | 1733 | char *str, *end, *next; |
81c3f413 BF |
1734 | |
1735 | dprintk("nfsd4_encode_components(%s)\n", components); | |
1736 | if ((*buflen -= 4) < 0) | |
1737 | return nfserr_resource; | |
1738 | WRITE32(0); /* We will fill this in with @count later */ | |
1739 | end = str = components; | |
1740 | while (*end) { | |
e7a0444a WAA |
1741 | bool found_esc = false; |
1742 | ||
1743 | /* try to parse as esc_start, ..., esc_end, sep */ | |
1744 | if (*str == esc_enter) { | |
1745 | for (; *end && (*end != esc_exit); end++) | |
1746 | /* find esc_exit or end of string */; | |
1747 | next = end + 1; | |
1748 | if (*end && (!*next || *next == sep)) { | |
1749 | str++; | |
1750 | found_esc = true; | |
1751 | } | |
1752 | } | |
1753 | ||
1754 | if (!found_esc) | |
1755 | for (; *end && (*end != sep); end++) | |
1756 | /* find sep or end of string */; | |
1757 | ||
81c3f413 BF |
1758 | strlen = end - str; |
1759 | if (strlen) { | |
1760 | if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0) | |
1761 | return nfserr_resource; | |
1762 | WRITE32(strlen); | |
1763 | WRITEMEM(str, strlen); | |
1764 | count++; | |
1765 | } | |
1766 | else | |
1767 | end++; | |
1768 | str = end; | |
1769 | } | |
1770 | *pp = p; | |
1771 | p = countp; | |
1772 | WRITE32(count); | |
1773 | return 0; | |
1774 | } | |
1775 | ||
e7a0444a WAA |
1776 | /* Encode as an array of strings the string given with components |
1777 | * separated @sep. | |
1778 | */ | |
1779 | static __be32 nfsd4_encode_components(char sep, char *components, | |
1780 | __be32 **pp, int *buflen) | |
1781 | { | |
1782 | return nfsd4_encode_components_esc(sep, components, pp, buflen, 0, 0); | |
1783 | } | |
1784 | ||
81c3f413 BF |
1785 | /* |
1786 | * encode a location element of a fs_locations structure | |
1787 | */ | |
b37ad28b | 1788 | static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location, |
2ebbc012 | 1789 | __be32 **pp, int *buflen) |
81c3f413 | 1790 | { |
b37ad28b | 1791 | __be32 status; |
2ebbc012 | 1792 | __be32 *p = *pp; |
81c3f413 | 1793 | |
e7a0444a WAA |
1794 | status = nfsd4_encode_components_esc(':', location->hosts, &p, buflen, |
1795 | '[', ']'); | |
81c3f413 BF |
1796 | if (status) |
1797 | return status; | |
1798 | status = nfsd4_encode_components('/', location->path, &p, buflen); | |
1799 | if (status) | |
1800 | return status; | |
1801 | *pp = p; | |
1802 | return 0; | |
1803 | } | |
1804 | ||
1805 | /* | |
ed748aac | 1806 | * Encode a path in RFC3530 'pathname4' format |
81c3f413 | 1807 | */ |
ed748aac TM |
1808 | static __be32 nfsd4_encode_path(const struct path *root, |
1809 | const struct path *path, __be32 **pp, int *buflen) | |
81c3f413 | 1810 | { |
ed748aac TM |
1811 | struct path cur = { |
1812 | .mnt = path->mnt, | |
1813 | .dentry = path->dentry, | |
1814 | }; | |
1815 | __be32 *p = *pp; | |
1816 | struct dentry **components = NULL; | |
1817 | unsigned int ncomponents = 0; | |
1818 | __be32 err = nfserr_jukebox; | |
81c3f413 | 1819 | |
ed748aac | 1820 | dprintk("nfsd4_encode_components("); |
81c3f413 | 1821 | |
ed748aac TM |
1822 | path_get(&cur); |
1823 | /* First walk the path up to the nfsd root, and store the | |
1824 | * dentries/path components in an array. | |
1825 | */ | |
1826 | for (;;) { | |
1827 | if (cur.dentry == root->dentry && cur.mnt == root->mnt) | |
1828 | break; | |
1829 | if (cur.dentry == cur.mnt->mnt_root) { | |
1830 | if (follow_up(&cur)) | |
1831 | continue; | |
1832 | goto out_free; | |
1833 | } | |
1834 | if ((ncomponents & 15) == 0) { | |
1835 | struct dentry **new; | |
1836 | new = krealloc(components, | |
1837 | sizeof(*new) * (ncomponents + 16), | |
1838 | GFP_KERNEL); | |
1839 | if (!new) | |
1840 | goto out_free; | |
1841 | components = new; | |
1842 | } | |
1843 | components[ncomponents++] = cur.dentry; | |
1844 | cur.dentry = dget_parent(cur.dentry); | |
1845 | } | |
81c3f413 | 1846 | |
ed748aac TM |
1847 | *buflen -= 4; |
1848 | if (*buflen < 0) | |
1849 | goto out_free; | |
1850 | WRITE32(ncomponents); | |
1851 | ||
1852 | while (ncomponents) { | |
1853 | struct dentry *dentry = components[ncomponents - 1]; | |
1854 | unsigned int len = dentry->d_name.len; | |
1855 | ||
1856 | *buflen -= 4 + (XDR_QUADLEN(len) << 2); | |
1857 | if (*buflen < 0) | |
1858 | goto out_free; | |
1859 | WRITE32(len); | |
1860 | WRITEMEM(dentry->d_name.name, len); | |
1861 | dprintk("/%s", dentry->d_name.name); | |
1862 | dput(dentry); | |
1863 | ncomponents--; | |
81c3f413 | 1864 | } |
ed748aac TM |
1865 | |
1866 | *pp = p; | |
1867 | err = 0; | |
1868 | out_free: | |
1869 | dprintk(")\n"); | |
1870 | while (ncomponents) | |
1871 | dput(components[--ncomponents]); | |
1872 | kfree(components); | |
1873 | path_put(&cur); | |
1874 | return err; | |
1875 | } | |
1876 | ||
1877 | static __be32 nfsd4_encode_fsloc_fsroot(struct svc_rqst *rqstp, | |
1878 | const struct path *path, __be32 **pp, int *buflen) | |
1879 | { | |
1880 | struct svc_export *exp_ps; | |
1881 | __be32 res; | |
1882 | ||
1883 | exp_ps = rqst_find_fsidzero_export(rqstp); | |
1884 | if (IS_ERR(exp_ps)) | |
1885 | return nfserrno(PTR_ERR(exp_ps)); | |
1886 | res = nfsd4_encode_path(&exp_ps->ex_path, path, pp, buflen); | |
1887 | exp_put(exp_ps); | |
1888 | return res; | |
81c3f413 BF |
1889 | } |
1890 | ||
1891 | /* | |
1892 | * encode a fs_locations structure | |
1893 | */ | |
b37ad28b | 1894 | static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp, |
81c3f413 | 1895 | struct svc_export *exp, |
2ebbc012 | 1896 | __be32 **pp, int *buflen) |
81c3f413 | 1897 | { |
b37ad28b | 1898 | __be32 status; |
cc45f017 | 1899 | int i; |
2ebbc012 | 1900 | __be32 *p = *pp; |
81c3f413 | 1901 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
81c3f413 | 1902 | |
ed748aac | 1903 | status = nfsd4_encode_fsloc_fsroot(rqstp, &exp->ex_path, &p, buflen); |
81c3f413 BF |
1904 | if (status) |
1905 | return status; | |
1906 | if ((*buflen -= 4) < 0) | |
1907 | return nfserr_resource; | |
1908 | WRITE32(fslocs->locations_count); | |
1909 | for (i=0; i<fslocs->locations_count; i++) { | |
1910 | status = nfsd4_encode_fs_location4(&fslocs->locations[i], | |
1911 | &p, buflen); | |
1912 | if (status) | |
1913 | return status; | |
1914 | } | |
1915 | *pp = p; | |
1916 | return 0; | |
1917 | } | |
1da177e4 | 1918 | |
3d2544b1 BF |
1919 | static u32 nfs4_file_type(umode_t mode) |
1920 | { | |
1921 | switch (mode & S_IFMT) { | |
1922 | case S_IFIFO: return NF4FIFO; | |
1923 | case S_IFCHR: return NF4CHR; | |
1924 | case S_IFDIR: return NF4DIR; | |
1925 | case S_IFBLK: return NF4BLK; | |
1926 | case S_IFLNK: return NF4LNK; | |
1927 | case S_IFREG: return NF4REG; | |
1928 | case S_IFSOCK: return NF4SOCK; | |
1929 | default: return NF4BAD; | |
1930 | }; | |
1931 | } | |
1da177e4 | 1932 | |
b37ad28b | 1933 | static __be32 |
ab8e4aee | 1934 | nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, kuid_t uid, kgid_t gid, |
2ebbc012 | 1935 | __be32 **p, int *buflen) |
1da177e4 LT |
1936 | { |
1937 | int status; | |
1938 | ||
1939 | if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) | |
1940 | return nfserr_resource; | |
1941 | if (whotype != NFS4_ACL_WHO_NAMED) | |
1942 | status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); | |
ab8e4aee EB |
1943 | else if (gid_valid(gid)) |
1944 | status = nfsd_map_gid_to_name(rqstp, gid, (u8 *)(*p + 1)); | |
1da177e4 | 1945 | else |
ab8e4aee | 1946 | status = nfsd_map_uid_to_name(rqstp, uid, (u8 *)(*p + 1)); |
1da177e4 LT |
1947 | if (status < 0) |
1948 | return nfserrno(status); | |
1949 | *p = xdr_encode_opaque(*p, NULL, status); | |
1950 | *buflen -= (XDR_QUADLEN(status) << 2) + 4; | |
1951 | BUG_ON(*buflen < 0); | |
1952 | return 0; | |
1953 | } | |
1954 | ||
b37ad28b | 1955 | static inline __be32 |
ab8e4aee | 1956 | nfsd4_encode_user(struct svc_rqst *rqstp, kuid_t user, __be32 **p, int *buflen) |
1da177e4 | 1957 | { |
ab8e4aee EB |
1958 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, user, INVALID_GID, |
1959 | p, buflen); | |
1da177e4 LT |
1960 | } |
1961 | ||
b37ad28b | 1962 | static inline __be32 |
ab8e4aee | 1963 | nfsd4_encode_group(struct svc_rqst *rqstp, kgid_t group, __be32 **p, int *buflen) |
1da177e4 | 1964 | { |
ab8e4aee EB |
1965 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, INVALID_UID, group, |
1966 | p, buflen); | |
1da177e4 LT |
1967 | } |
1968 | ||
b37ad28b | 1969 | static inline __be32 |
ab8e4aee | 1970 | nfsd4_encode_aclname(struct svc_rqst *rqstp, struct nfs4_ace *ace, |
2ebbc012 | 1971 | __be32 **p, int *buflen) |
1da177e4 | 1972 | { |
ab8e4aee EB |
1973 | kuid_t uid = INVALID_UID; |
1974 | kgid_t gid = INVALID_GID; | |
1975 | ||
1976 | if (ace->whotype == NFS4_ACL_WHO_NAMED) { | |
1977 | if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) | |
1978 | gid = ace->who_gid; | |
1979 | else | |
1980 | uid = ace->who_uid; | |
1981 | } | |
1982 | return nfsd4_encode_name(rqstp, ace->whotype, uid, gid, p, buflen); | |
1da177e4 LT |
1983 | } |
1984 | ||
42ca0993 BF |
1985 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
1986 | FATTR4_WORD0_RDATTR_ERROR) | |
1987 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
1988 | ||
18032ca0 DQ |
1989 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
1990 | static inline __be32 | |
1991 | nfsd4_encode_security_label(struct svc_rqst *rqstp, void *context, int len, __be32 **pp, int *buflen) | |
1992 | { | |
1993 | __be32 *p = *pp; | |
1994 | ||
1995 | if (*buflen < ((XDR_QUADLEN(len) << 2) + 4 + 4 + 4)) | |
1996 | return nfserr_resource; | |
1997 | ||
1998 | /* | |
1999 | * For now we use a 0 here to indicate the null translation; in | |
2000 | * the future we may place a call to translation code here. | |
2001 | */ | |
2002 | if ((*buflen -= 8) < 0) | |
2003 | return nfserr_resource; | |
2004 | ||
2005 | WRITE32(0); /* lfs */ | |
2006 | WRITE32(0); /* pi */ | |
2007 | p = xdr_encode_opaque(p, context, len); | |
2008 | *buflen -= (XDR_QUADLEN(len) << 2) + 4; | |
2009 | ||
2010 | *pp = p; | |
2011 | return 0; | |
2012 | } | |
2013 | #else | |
2014 | static inline __be32 | |
ba4e55bb | 2015 | nfsd4_encode_security_label(struct svc_rqst *rqstp, void *context, int len, __be32 **pp, int *buflen) |
18032ca0 DQ |
2016 | { return 0; } |
2017 | #endif | |
2018 | ||
b37ad28b | 2019 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
42ca0993 BF |
2020 | { |
2021 | /* As per referral draft: */ | |
2022 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
2023 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
2024 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
2025 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
2026 | *rdattr_err = NFSERR_MOVED; | |
2027 | else | |
2028 | return nfserr_moved; | |
2029 | } | |
2030 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
2031 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
2032 | return 0; | |
2033 | } | |
1da177e4 | 2034 | |
ae7095a7 BF |
2035 | |
2036 | static int get_parent_attributes(struct svc_export *exp, struct kstat *stat) | |
2037 | { | |
2038 | struct path path = exp->ex_path; | |
2039 | int err; | |
2040 | ||
2041 | path_get(&path); | |
2042 | while (follow_up(&path)) { | |
2043 | if (path.dentry != path.mnt->mnt_root) | |
2044 | break; | |
2045 | } | |
3dadecce | 2046 | err = vfs_getattr(&path, stat); |
ae7095a7 BF |
2047 | path_put(&path); |
2048 | return err; | |
2049 | } | |
2050 | ||
1da177e4 LT |
2051 | /* |
2052 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
2053 | * ourselves. | |
2054 | * | |
84822d0b | 2055 | * countp is the buffer size in _words_ |
1da177e4 | 2056 | */ |
b37ad28b | 2057 | __be32 |
1da177e4 | 2058 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, |
84822d0b | 2059 | struct dentry *dentry, __be32 **buffer, int count, u32 *bmval, |
406a7ea9 | 2060 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
2061 | { |
2062 | u32 bmval0 = bmval[0]; | |
2063 | u32 bmval1 = bmval[1]; | |
7e705706 | 2064 | u32 bmval2 = bmval[2]; |
1da177e4 LT |
2065 | struct kstat stat; |
2066 | struct svc_fh tempfh; | |
2067 | struct kstatfs statfs; | |
84822d0b | 2068 | int buflen = count << 2; |
2ebbc012 | 2069 | __be32 *attrlenp; |
1da177e4 LT |
2070 | u32 dummy; |
2071 | u64 dummy64; | |
42ca0993 | 2072 | u32 rdattr_err = 0; |
84822d0b | 2073 | __be32 *p = *buffer; |
b37ad28b | 2074 | __be32 status; |
b8dd7b9a | 2075 | int err; |
1da177e4 LT |
2076 | int aclsupport = 0; |
2077 | struct nfs4_acl *acl = NULL; | |
18032ca0 DQ |
2078 | void *context = NULL; |
2079 | int contextlen; | |
2080 | bool contextsupport = false; | |
7e705706 AA |
2081 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
2082 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
2083 | struct path path = { |
2084 | .mnt = exp->ex_path.mnt, | |
2085 | .dentry = dentry, | |
2086 | }; | |
3d733711 | 2087 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
1da177e4 LT |
2088 | |
2089 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
7e705706 AA |
2090 | BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); |
2091 | BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); | |
2092 | BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); | |
1da177e4 | 2093 | |
42ca0993 | 2094 | if (exp->ex_fslocs.migrated) { |
7e705706 | 2095 | BUG_ON(bmval[2]); |
42ca0993 BF |
2096 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); |
2097 | if (status) | |
2098 | goto out; | |
2099 | } | |
2100 | ||
3dadecce | 2101 | err = vfs_getattr(&path, &stat); |
b8dd7b9a | 2102 | if (err) |
1da177e4 | 2103 | goto out_nfserr; |
a16e92ed BF |
2104 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | |
2105 | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
2106 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
2107 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 2108 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 2109 | if (err) |
1da177e4 LT |
2110 | goto out_nfserr; |
2111 | } | |
2112 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
2113 | fh_init(&tempfh, NFS4_FHSIZE); | |
2114 | status = fh_compose(&tempfh, exp, dentry, NULL); | |
2115 | if (status) | |
2116 | goto out; | |
2117 | fhp = &tempfh; | |
2118 | } | |
2119 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT | |
2120 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
b8dd7b9a AV |
2121 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
2122 | aclsupport = (err == 0); | |
1da177e4 | 2123 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 2124 | if (err == -EOPNOTSUPP) |
1da177e4 | 2125 | bmval0 &= ~FATTR4_WORD0_ACL; |
b8dd7b9a | 2126 | else if (err == -EINVAL) { |
1da177e4 LT |
2127 | status = nfserr_attrnotsupp; |
2128 | goto out; | |
b8dd7b9a | 2129 | } else if (err != 0) |
1da177e4 LT |
2130 | goto out_nfserr; |
2131 | } | |
2132 | } | |
1da177e4 | 2133 | |
18032ca0 DQ |
2134 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
2135 | if ((bmval[2] & FATTR4_WORD2_SECURITY_LABEL) || | |
2136 | bmval[0] & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
2137 | err = security_inode_getsecctx(dentry->d_inode, | |
2138 | &context, &contextlen); | |
2139 | contextsupport = (err == 0); | |
2140 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { | |
2141 | if (err == -EOPNOTSUPP) | |
2142 | bmval2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2143 | else if (err) | |
2144 | goto out_nfserr; | |
2145 | } | |
2146 | } | |
2147 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ | |
2148 | ||
2b44f1ba BH |
2149 | if (bmval2) { |
2150 | if ((buflen -= 16) < 0) | |
2151 | goto out_resource; | |
7e705706 AA |
2152 | WRITE32(3); |
2153 | WRITE32(bmval0); | |
2154 | WRITE32(bmval1); | |
2155 | WRITE32(bmval2); | |
2b44f1ba BH |
2156 | } else if (bmval1) { |
2157 | if ((buflen -= 12) < 0) | |
2158 | goto out_resource; | |
7e705706 AA |
2159 | WRITE32(2); |
2160 | WRITE32(bmval0); | |
2161 | WRITE32(bmval1); | |
2162 | } else { | |
2b44f1ba BH |
2163 | if ((buflen -= 8) < 0) |
2164 | goto out_resource; | |
7e705706 AA |
2165 | WRITE32(1); |
2166 | WRITE32(bmval0); | |
2167 | } | |
1da177e4 LT |
2168 | attrlenp = p++; /* to be backfilled later */ |
2169 | ||
2170 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
7e705706 AA |
2171 | u32 word0 = nfsd_suppattrs0(minorversion); |
2172 | u32 word1 = nfsd_suppattrs1(minorversion); | |
2173 | u32 word2 = nfsd_suppattrs2(minorversion); | |
2174 | ||
42ca0993 BF |
2175 | if (!aclsupport) |
2176 | word0 &= ~FATTR4_WORD0_ACL; | |
18032ca0 DQ |
2177 | if (!contextsupport) |
2178 | word2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
7e705706 | 2179 | if (!word2) { |
2b44f1ba BH |
2180 | if ((buflen -= 12) < 0) |
2181 | goto out_resource; | |
7e705706 AA |
2182 | WRITE32(2); |
2183 | WRITE32(word0); | |
2184 | WRITE32(word1); | |
2185 | } else { | |
2b44f1ba BH |
2186 | if ((buflen -= 16) < 0) |
2187 | goto out_resource; | |
7e705706 AA |
2188 | WRITE32(3); |
2189 | WRITE32(word0); | |
2190 | WRITE32(word1); | |
2191 | WRITE32(word2); | |
2192 | } | |
1da177e4 LT |
2193 | } |
2194 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
2195 | if ((buflen -= 4) < 0) | |
2196 | goto out_resource; | |
3d2544b1 | 2197 | dummy = nfs4_file_type(stat.mode); |
1da177e4 LT |
2198 | if (dummy == NF4BAD) |
2199 | goto out_serverfault; | |
2200 | WRITE32(dummy); | |
2201 | } | |
2202 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
2203 | if ((buflen -= 4) < 0) | |
2204 | goto out_resource; | |
49640001 | 2205 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
e34ac862 | 2206 | WRITE32(NFS4_FH_PERSISTENT); |
49640001 | 2207 | else |
e34ac862 | 2208 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
1da177e4 LT |
2209 | } |
2210 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
1da177e4 LT |
2211 | if ((buflen -= 8) < 0) |
2212 | goto out_resource; | |
c654b8a9 | 2213 | write_change(&p, &stat, dentry->d_inode); |
1da177e4 LT |
2214 | } |
2215 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
2216 | if ((buflen -= 8) < 0) | |
2217 | goto out_resource; | |
2218 | WRITE64(stat.size); | |
2219 | } | |
2220 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
2221 | if ((buflen -= 4) < 0) | |
2222 | goto out_resource; | |
2223 | WRITE32(1); | |
2224 | } | |
2225 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
2226 | if ((buflen -= 4) < 0) | |
2227 | goto out_resource; | |
2228 | WRITE32(1); | |
2229 | } | |
2230 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
2231 | if ((buflen -= 4) < 0) | |
2232 | goto out_resource; | |
2233 | WRITE32(0); | |
2234 | } | |
2235 | if (bmval0 & FATTR4_WORD0_FSID) { | |
2236 | if ((buflen -= 16) < 0) | |
2237 | goto out_resource; | |
42ca0993 BF |
2238 | if (exp->ex_fslocs.migrated) { |
2239 | WRITE64(NFS4_REFERRAL_FSID_MAJOR); | |
2240 | WRITE64(NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
2241 | } else switch(fsid_source(fhp)) { |
2242 | case FSIDSOURCE_FSID: | |
1da177e4 LT |
2243 | WRITE64((u64)exp->ex_fsid); |
2244 | WRITE64((u64)0); | |
af6a4e28 N |
2245 | break; |
2246 | case FSIDSOURCE_DEV: | |
1da177e4 LT |
2247 | WRITE32(0); |
2248 | WRITE32(MAJOR(stat.dev)); | |
2249 | WRITE32(0); | |
2250 | WRITE32(MINOR(stat.dev)); | |
af6a4e28 N |
2251 | break; |
2252 | case FSIDSOURCE_UUID: | |
2253 | WRITEMEM(exp->ex_uuid, 16); | |
2254 | break; | |
1da177e4 LT |
2255 | } |
2256 | } | |
2257 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
2258 | if ((buflen -= 4) < 0) | |
2259 | goto out_resource; | |
2260 | WRITE32(0); | |
2261 | } | |
2262 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
2263 | if ((buflen -= 4) < 0) | |
2264 | goto out_resource; | |
3d733711 | 2265 | WRITE32(nn->nfsd4_lease); |
1da177e4 LT |
2266 | } |
2267 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
2268 | if ((buflen -= 4) < 0) | |
2269 | goto out_resource; | |
42ca0993 | 2270 | WRITE32(rdattr_err); |
1da177e4 LT |
2271 | } |
2272 | if (bmval0 & FATTR4_WORD0_ACL) { | |
2273 | struct nfs4_ace *ace; | |
1da177e4 LT |
2274 | |
2275 | if (acl == NULL) { | |
2276 | if ((buflen -= 4) < 0) | |
2277 | goto out_resource; | |
2278 | ||
2279 | WRITE32(0); | |
2280 | goto out_acl; | |
2281 | } | |
2282 | if ((buflen -= 4) < 0) | |
2283 | goto out_resource; | |
2284 | WRITE32(acl->naces); | |
2285 | ||
28e05dd8 | 2286 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
1da177e4 LT |
2287 | if ((buflen -= 4*3) < 0) |
2288 | goto out_resource; | |
2289 | WRITE32(ace->type); | |
2290 | WRITE32(ace->flag); | |
2291 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); | |
ab8e4aee | 2292 | status = nfsd4_encode_aclname(rqstp, ace, &p, &buflen); |
1da177e4 LT |
2293 | if (status == nfserr_resource) |
2294 | goto out_resource; | |
2295 | if (status) | |
2296 | goto out; | |
2297 | } | |
2298 | } | |
2299 | out_acl: | |
2300 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
2301 | if ((buflen -= 4) < 0) | |
2302 | goto out_resource; | |
2303 | WRITE32(aclsupport ? | |
2304 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); | |
2305 | } | |
2306 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
2307 | if ((buflen -= 4) < 0) | |
2308 | goto out_resource; | |
2309 | WRITE32(1); | |
2310 | } | |
2311 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
2312 | if ((buflen -= 4) < 0) | |
2313 | goto out_resource; | |
2930d381 | 2314 | WRITE32(0); |
1da177e4 LT |
2315 | } |
2316 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
2317 | if ((buflen -= 4) < 0) | |
2318 | goto out_resource; | |
2319 | WRITE32(1); | |
2320 | } | |
2321 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
2322 | if ((buflen -= 4) < 0) | |
2323 | goto out_resource; | |
2324 | WRITE32(1); | |
2325 | } | |
2326 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
2327 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; | |
2328 | if (buflen < 0) | |
2329 | goto out_resource; | |
2330 | WRITE32(fhp->fh_handle.fh_size); | |
2331 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); | |
2332 | } | |
2333 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
2334 | if ((buflen -= 8) < 0) | |
2335 | goto out_resource; | |
40ee5dc6 | 2336 | WRITE64(stat.ino); |
1da177e4 LT |
2337 | } |
2338 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
2339 | if ((buflen -= 8) < 0) | |
2340 | goto out_resource; | |
2341 | WRITE64((u64) statfs.f_ffree); | |
2342 | } | |
2343 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
2344 | if ((buflen -= 8) < 0) | |
2345 | goto out_resource; | |
2346 | WRITE64((u64) statfs.f_ffree); | |
2347 | } | |
2348 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
2349 | if ((buflen -= 8) < 0) | |
2350 | goto out_resource; | |
2351 | WRITE64((u64) statfs.f_files); | |
2352 | } | |
81c3f413 BF |
2353 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
2354 | status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); | |
2355 | if (status == nfserr_resource) | |
2356 | goto out_resource; | |
2357 | if (status) | |
2358 | goto out; | |
2359 | } | |
1da177e4 LT |
2360 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
2361 | if ((buflen -= 4) < 0) | |
2362 | goto out_resource; | |
2363 | WRITE32(1); | |
2364 | } | |
2365 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
2366 | if ((buflen -= 8) < 0) | |
2367 | goto out_resource; | |
2368 | WRITE64(~(u64)0); | |
2369 | } | |
2370 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
2371 | if ((buflen -= 4) < 0) | |
2372 | goto out_resource; | |
2373 | WRITE32(255); | |
2374 | } | |
2375 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
2376 | if ((buflen -= 4) < 0) | |
2377 | goto out_resource; | |
a16e92ed | 2378 | WRITE32(statfs.f_namelen); |
1da177e4 LT |
2379 | } |
2380 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
2381 | if ((buflen -= 8) < 0) | |
2382 | goto out_resource; | |
7adae489 | 2383 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2384 | } |
2385 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
2386 | if ((buflen -= 8) < 0) | |
2387 | goto out_resource; | |
7adae489 | 2388 | WRITE64((u64) svc_max_payload(rqstp)); |
1da177e4 LT |
2389 | } |
2390 | if (bmval1 & FATTR4_WORD1_MODE) { | |
2391 | if ((buflen -= 4) < 0) | |
2392 | goto out_resource; | |
2393 | WRITE32(stat.mode & S_IALLUGO); | |
2394 | } | |
2395 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
2396 | if ((buflen -= 4) < 0) | |
2397 | goto out_resource; | |
2398 | WRITE32(1); | |
2399 | } | |
2400 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
2401 | if ((buflen -= 4) < 0) | |
2402 | goto out_resource; | |
2403 | WRITE32(stat.nlink); | |
2404 | } | |
2405 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
2406 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); | |
2407 | if (status == nfserr_resource) | |
2408 | goto out_resource; | |
2409 | if (status) | |
2410 | goto out; | |
2411 | } | |
2412 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
2413 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); | |
2414 | if (status == nfserr_resource) | |
2415 | goto out_resource; | |
2416 | if (status) | |
2417 | goto out; | |
2418 | } | |
2419 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
2420 | if ((buflen -= 8) < 0) | |
2421 | goto out_resource; | |
2422 | WRITE32((u32) MAJOR(stat.rdev)); | |
2423 | WRITE32((u32) MINOR(stat.rdev)); | |
2424 | } | |
2425 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
2426 | if ((buflen -= 8) < 0) | |
2427 | goto out_resource; | |
2428 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
2429 | WRITE64(dummy64); | |
2430 | } | |
2431 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
2432 | if ((buflen -= 8) < 0) | |
2433 | goto out_resource; | |
2434 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
2435 | WRITE64(dummy64); | |
2436 | } | |
2437 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
2438 | if ((buflen -= 8) < 0) | |
2439 | goto out_resource; | |
2440 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
2441 | WRITE64(dummy64); | |
2442 | } | |
2443 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
2444 | if ((buflen -= 8) < 0) | |
2445 | goto out_resource; | |
2446 | dummy64 = (u64)stat.blocks << 9; | |
2447 | WRITE64(dummy64); | |
2448 | } | |
2449 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
2450 | if ((buflen -= 12) < 0) | |
2451 | goto out_resource; | |
bf8d9097 | 2452 | WRITE64((s64)stat.atime.tv_sec); |
1da177e4 LT |
2453 | WRITE32(stat.atime.tv_nsec); |
2454 | } | |
2455 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
2456 | if ((buflen -= 12) < 0) | |
2457 | goto out_resource; | |
2458 | WRITE32(0); | |
2459 | WRITE32(1); | |
2460 | WRITE32(0); | |
2461 | } | |
2462 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
2463 | if ((buflen -= 12) < 0) | |
2464 | goto out_resource; | |
bf8d9097 | 2465 | WRITE64((s64)stat.ctime.tv_sec); |
1da177e4 LT |
2466 | WRITE32(stat.ctime.tv_nsec); |
2467 | } | |
2468 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
2469 | if ((buflen -= 12) < 0) | |
2470 | goto out_resource; | |
bf8d9097 | 2471 | WRITE64((s64)stat.mtime.tv_sec); |
1da177e4 LT |
2472 | WRITE32(stat.mtime.tv_nsec); |
2473 | } | |
2474 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
1da177e4 LT |
2475 | if ((buflen -= 8) < 0) |
2476 | goto out_resource; | |
406a7ea9 FF |
2477 | /* |
2478 | * Get parent's attributes if not ignoring crossmount | |
2479 | * and this is the root of a cross-mounted filesystem. | |
2480 | */ | |
2481 | if (ignore_crossmnt == 0 && | |
ae7095a7 BF |
2482 | dentry == exp->ex_path.mnt->mnt_root) |
2483 | get_parent_attributes(exp, &stat); | |
40ee5dc6 | 2484 | WRITE64(stat.ino); |
1da177e4 | 2485 | } |
18032ca0 DQ |
2486 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { |
2487 | status = nfsd4_encode_security_label(rqstp, context, | |
2488 | contextlen, &p, &buflen); | |
2489 | if (status) | |
2490 | goto out; | |
2491 | } | |
8c18f205 BH |
2492 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
2493 | WRITE32(3); | |
2494 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0); | |
2495 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1); | |
2496 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2); | |
2497 | } | |
7e705706 | 2498 | |
1da177e4 | 2499 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); |
84822d0b | 2500 | *buffer = p; |
1da177e4 LT |
2501 | status = nfs_ok; |
2502 | ||
2503 | out: | |
ba4e55bb | 2504 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
18032ca0 DQ |
2505 | if (context) |
2506 | security_release_secctx(context, contextlen); | |
ba4e55bb | 2507 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ |
28e05dd8 | 2508 | kfree(acl); |
1da177e4 LT |
2509 | if (fhp == &tempfh) |
2510 | fh_put(&tempfh); | |
2511 | return status; | |
2512 | out_nfserr: | |
b8dd7b9a | 2513 | status = nfserrno(err); |
1da177e4 LT |
2514 | goto out; |
2515 | out_resource: | |
1da177e4 LT |
2516 | status = nfserr_resource; |
2517 | goto out; | |
2518 | out_serverfault: | |
2519 | status = nfserr_serverfault; | |
2520 | goto out; | |
2521 | } | |
2522 | ||
c0ce6ec8 BF |
2523 | static inline int attributes_need_mount(u32 *bmval) |
2524 | { | |
2525 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
2526 | return 1; | |
2527 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
2528 | return 1; | |
2529 | return 0; | |
2530 | } | |
2531 | ||
b37ad28b | 2532 | static __be32 |
1da177e4 | 2533 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, |
84822d0b | 2534 | const char *name, int namlen, __be32 **p, int buflen) |
1da177e4 LT |
2535 | { |
2536 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
2537 | struct dentry *dentry; | |
b37ad28b | 2538 | __be32 nfserr; |
406a7ea9 | 2539 | int ignore_crossmnt = 0; |
1da177e4 LT |
2540 | |
2541 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); | |
2542 | if (IS_ERR(dentry)) | |
2543 | return nfserrno(PTR_ERR(dentry)); | |
b2c0cea6 BF |
2544 | if (!dentry->d_inode) { |
2545 | /* | |
2546 | * nfsd_buffered_readdir drops the i_mutex between | |
2547 | * readdir and calling this callback, leaving a window | |
2548 | * where this directory entry could have gone away. | |
2549 | */ | |
2550 | dput(dentry); | |
2551 | return nfserr_noent; | |
2552 | } | |
1da177e4 LT |
2553 | |
2554 | exp_get(exp); | |
406a7ea9 FF |
2555 | /* |
2556 | * In the case of a mountpoint, the client may be asking for | |
2557 | * attributes that are only properties of the underlying filesystem | |
2558 | * as opposed to the cross-mounted file system. In such a case, | |
2559 | * we will not follow the cross mount and will fill the attribtutes | |
2560 | * directly from the mountpoint dentry. | |
2561 | */ | |
3227fa41 | 2562 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
2563 | int err; |
2564 | ||
3227fa41 BF |
2565 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
2566 | && !attributes_need_mount(cd->rd_bmval)) { | |
2567 | ignore_crossmnt = 1; | |
2568 | goto out_encode; | |
2569 | } | |
dcb488a3 AA |
2570 | /* |
2571 | * Why the heck aren't we just using nfsd_lookup?? | |
2572 | * Different "."/".." handling? Something else? | |
2573 | * At least, add a comment here to explain.... | |
2574 | */ | |
021d3a72 BF |
2575 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
2576 | if (err) { | |
2577 | nfserr = nfserrno(err); | |
1da177e4 LT |
2578 | goto out_put; |
2579 | } | |
dcb488a3 AA |
2580 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
2581 | if (nfserr) | |
2582 | goto out_put; | |
1da177e4 LT |
2583 | |
2584 | } | |
3227fa41 | 2585 | out_encode: |
1da177e4 | 2586 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, |
406a7ea9 | 2587 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
2588 | out_put: |
2589 | dput(dentry); | |
2590 | exp_put(exp); | |
2591 | return nfserr; | |
2592 | } | |
2593 | ||
2ebbc012 | 2594 | static __be32 * |
b37ad28b | 2595 | nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr) |
1da177e4 | 2596 | { |
2ebbc012 | 2597 | __be32 *attrlenp; |
1da177e4 LT |
2598 | |
2599 | if (buflen < 6) | |
2600 | return NULL; | |
2601 | *p++ = htonl(2); | |
2602 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
2603 | *p++ = htonl(0); /* bmval1 */ | |
2604 | ||
2605 | attrlenp = p++; | |
2606 | *p++ = nfserr; /* no htonl */ | |
2607 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); | |
2608 | return p; | |
2609 | } | |
2610 | ||
2611 | static int | |
a0ad13ef N |
2612 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
2613 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 2614 | { |
a0ad13ef | 2615 | struct readdir_cd *ccd = ccdv; |
1da177e4 LT |
2616 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
2617 | int buflen; | |
2ebbc012 | 2618 | __be32 *p = cd->buffer; |
b2c0cea6 | 2619 | __be32 *cookiep; |
b37ad28b | 2620 | __be32 nfserr = nfserr_toosmall; |
1da177e4 LT |
2621 | |
2622 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
2623 | if (name && isdotent(name, namlen)) { | |
2624 | cd->common.err = nfs_ok; | |
2625 | return 0; | |
2626 | } | |
2627 | ||
2628 | if (cd->offset) | |
2629 | xdr_encode_hyper(cd->offset, (u64) offset); | |
2630 | ||
2631 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); | |
2632 | if (buflen < 0) | |
2633 | goto fail; | |
2634 | ||
2635 | *p++ = xdr_one; /* mark entry present */ | |
b2c0cea6 | 2636 | cookiep = p; |
1da177e4 LT |
2637 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
2638 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
2639 | ||
84822d0b | 2640 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, &p, buflen); |
1da177e4 LT |
2641 | switch (nfserr) { |
2642 | case nfs_ok: | |
1da177e4 LT |
2643 | break; |
2644 | case nfserr_resource: | |
2645 | nfserr = nfserr_toosmall; | |
2646 | goto fail; | |
b2c0cea6 BF |
2647 | case nfserr_noent: |
2648 | goto skip_entry; | |
1da177e4 LT |
2649 | default: |
2650 | /* | |
2651 | * If the client requested the RDATTR_ERROR attribute, | |
2652 | * we stuff the error code into this attribute | |
2653 | * and continue. If this attribute was not requested, | |
2654 | * then in accordance with the spec, we fail the | |
2655 | * entire READDIR operation(!) | |
2656 | */ | |
2657 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
2658 | goto fail; | |
1da177e4 | 2659 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
34081efc FI |
2660 | if (p == NULL) { |
2661 | nfserr = nfserr_toosmall; | |
1da177e4 | 2662 | goto fail; |
34081efc | 2663 | } |
1da177e4 LT |
2664 | } |
2665 | cd->buflen -= (p - cd->buffer); | |
2666 | cd->buffer = p; | |
b2c0cea6 BF |
2667 | cd->offset = cookiep; |
2668 | skip_entry: | |
1da177e4 LT |
2669 | cd->common.err = nfs_ok; |
2670 | return 0; | |
2671 | fail: | |
2672 | cd->common.err = nfserr; | |
2673 | return -EINVAL; | |
2674 | } | |
2675 | ||
e2f282b9 BH |
2676 | static void |
2677 | nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid) | |
2678 | { | |
bc749ca4 | 2679 | __be32 *p; |
e2f282b9 BH |
2680 | |
2681 | RESERVE_SPACE(sizeof(stateid_t)); | |
2682 | WRITE32(sid->si_generation); | |
2683 | WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); | |
2684 | ADJUST_ARGS(); | |
2685 | } | |
2686 | ||
695e12f8 | 2687 | static __be32 |
b37ad28b | 2688 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 2689 | { |
bc749ca4 | 2690 | __be32 *p; |
1da177e4 LT |
2691 | |
2692 | if (!nfserr) { | |
2693 | RESERVE_SPACE(8); | |
2694 | WRITE32(access->ac_supported); | |
2695 | WRITE32(access->ac_resp_access); | |
2696 | ADJUST_ARGS(); | |
2697 | } | |
695e12f8 | 2698 | return nfserr; |
1da177e4 LT |
2699 | } |
2700 | ||
1d1bc8f2 BF |
2701 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
2702 | { | |
2703 | __be32 *p; | |
2704 | ||
2705 | if (!nfserr) { | |
2706 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 8); | |
2707 | WRITEMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
2708 | WRITE32(bcts->dir); | |
6e67b5d1 | 2709 | /* Sorry, we do not yet support RDMA over 4.1: */ |
1d1bc8f2 BF |
2710 | WRITE32(0); |
2711 | ADJUST_ARGS(); | |
2712 | } | |
2713 | return nfserr; | |
2714 | } | |
2715 | ||
695e12f8 | 2716 | static __be32 |
b37ad28b | 2717 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 | 2718 | { |
e2f282b9 BH |
2719 | if (!nfserr) |
2720 | nfsd4_encode_stateid(resp, &close->cl_stateid); | |
2721 | ||
695e12f8 | 2722 | return nfserr; |
1da177e4 LT |
2723 | } |
2724 | ||
2725 | ||
695e12f8 | 2726 | static __be32 |
b37ad28b | 2727 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 2728 | { |
bc749ca4 | 2729 | __be32 *p; |
1da177e4 LT |
2730 | |
2731 | if (!nfserr) { | |
ab4684d1 CL |
2732 | RESERVE_SPACE(NFS4_VERIFIER_SIZE); |
2733 | WRITEMEM(commit->co_verf.data, NFS4_VERIFIER_SIZE); | |
1da177e4 LT |
2734 | ADJUST_ARGS(); |
2735 | } | |
695e12f8 | 2736 | return nfserr; |
1da177e4 LT |
2737 | } |
2738 | ||
695e12f8 | 2739 | static __be32 |
b37ad28b | 2740 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 2741 | { |
bc749ca4 | 2742 | __be32 *p; |
1da177e4 LT |
2743 | |
2744 | if (!nfserr) { | |
2745 | RESERVE_SPACE(32); | |
c654b8a9 | 2746 | write_cinfo(&p, &create->cr_cinfo); |
1da177e4 LT |
2747 | WRITE32(2); |
2748 | WRITE32(create->cr_bmval[0]); | |
2749 | WRITE32(create->cr_bmval[1]); | |
2750 | ADJUST_ARGS(); | |
2751 | } | |
695e12f8 | 2752 | return nfserr; |
1da177e4 LT |
2753 | } |
2754 | ||
b37ad28b AV |
2755 | static __be32 |
2756 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
2757 | { |
2758 | struct svc_fh *fhp = getattr->ga_fhp; | |
2759 | int buflen; | |
2760 | ||
2761 | if (nfserr) | |
2762 | return nfserr; | |
2763 | ||
2764 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); | |
2765 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, | |
84822d0b | 2766 | &resp->p, buflen, getattr->ga_bmval, |
406a7ea9 | 2767 | resp->rqstp, 0); |
1da177e4 LT |
2768 | return nfserr; |
2769 | } | |
2770 | ||
695e12f8 BH |
2771 | static __be32 |
2772 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 2773 | { |
695e12f8 | 2774 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 2775 | unsigned int len; |
bc749ca4 | 2776 | __be32 *p; |
1da177e4 LT |
2777 | |
2778 | if (!nfserr) { | |
2779 | len = fhp->fh_handle.fh_size; | |
2780 | RESERVE_SPACE(len + 4); | |
2781 | WRITE32(len); | |
2782 | WRITEMEM(&fhp->fh_handle.fh_base, len); | |
2783 | ADJUST_ARGS(); | |
2784 | } | |
695e12f8 | 2785 | return nfserr; |
1da177e4 LT |
2786 | } |
2787 | ||
2788 | /* | |
2789 | * Including all fields other than the name, a LOCK4denied structure requires | |
2790 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
2791 | */ | |
2792 | static void | |
2793 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) | |
2794 | { | |
7c13f344 | 2795 | struct xdr_netobj *conf = &ld->ld_owner; |
bc749ca4 | 2796 | __be32 *p; |
1da177e4 | 2797 | |
7c13f344 | 2798 | RESERVE_SPACE(32 + XDR_LEN(conf->len)); |
1da177e4 LT |
2799 | WRITE64(ld->ld_start); |
2800 | WRITE64(ld->ld_length); | |
2801 | WRITE32(ld->ld_type); | |
7c13f344 | 2802 | if (conf->len) { |
1da177e4 | 2803 | WRITEMEM(&ld->ld_clientid, 8); |
7c13f344 BF |
2804 | WRITE32(conf->len); |
2805 | WRITEMEM(conf->data, conf->len); | |
2806 | kfree(conf->data); | |
1da177e4 LT |
2807 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
2808 | WRITE64((u64)0); /* clientid */ | |
2809 | WRITE32(0); /* length of owner name */ | |
2810 | } | |
2811 | ADJUST_ARGS(); | |
2812 | } | |
2813 | ||
695e12f8 | 2814 | static __be32 |
b37ad28b | 2815 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 2816 | { |
e2f282b9 BH |
2817 | if (!nfserr) |
2818 | nfsd4_encode_stateid(resp, &lock->lk_resp_stateid); | |
2819 | else if (nfserr == nfserr_denied) | |
1da177e4 LT |
2820 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); |
2821 | ||
695e12f8 | 2822 | return nfserr; |
1da177e4 LT |
2823 | } |
2824 | ||
695e12f8 | 2825 | static __be32 |
b37ad28b | 2826 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 LT |
2827 | { |
2828 | if (nfserr == nfserr_denied) | |
2829 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); | |
695e12f8 | 2830 | return nfserr; |
1da177e4 LT |
2831 | } |
2832 | ||
695e12f8 | 2833 | static __be32 |
b37ad28b | 2834 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 | 2835 | { |
e2f282b9 BH |
2836 | if (!nfserr) |
2837 | nfsd4_encode_stateid(resp, &locku->lu_stateid); | |
2838 | ||
695e12f8 | 2839 | return nfserr; |
1da177e4 LT |
2840 | } |
2841 | ||
2842 | ||
695e12f8 | 2843 | static __be32 |
b37ad28b | 2844 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 2845 | { |
bc749ca4 | 2846 | __be32 *p; |
1da177e4 LT |
2847 | |
2848 | if (!nfserr) { | |
2849 | RESERVE_SPACE(20); | |
c654b8a9 | 2850 | write_cinfo(&p, &link->li_cinfo); |
1da177e4 LT |
2851 | ADJUST_ARGS(); |
2852 | } | |
695e12f8 | 2853 | return nfserr; |
1da177e4 LT |
2854 | } |
2855 | ||
2856 | ||
695e12f8 | 2857 | static __be32 |
b37ad28b | 2858 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 2859 | { |
bc749ca4 | 2860 | __be32 *p; |
1da177e4 LT |
2861 | |
2862 | if (nfserr) | |
2863 | goto out; | |
2864 | ||
e2f282b9 BH |
2865 | nfsd4_encode_stateid(resp, &open->op_stateid); |
2866 | RESERVE_SPACE(40); | |
c654b8a9 | 2867 | write_cinfo(&p, &open->op_cinfo); |
1da177e4 LT |
2868 | WRITE32(open->op_rflags); |
2869 | WRITE32(2); | |
2870 | WRITE32(open->op_bmval[0]); | |
2871 | WRITE32(open->op_bmval[1]); | |
2872 | WRITE32(open->op_delegate_type); | |
2873 | ADJUST_ARGS(); | |
2874 | ||
2875 | switch (open->op_delegate_type) { | |
2876 | case NFS4_OPEN_DELEGATE_NONE: | |
2877 | break; | |
2878 | case NFS4_OPEN_DELEGATE_READ: | |
e2f282b9 BH |
2879 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2880 | RESERVE_SPACE(20); | |
7b190fec | 2881 | WRITE32(open->op_recall); |
1da177e4 LT |
2882 | |
2883 | /* | |
2884 | * TODO: ACE's in delegations | |
2885 | */ | |
2886 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2887 | WRITE32(0); | |
2888 | WRITE32(0); | |
2889 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2890 | ADJUST_ARGS(); | |
2891 | break; | |
2892 | case NFS4_OPEN_DELEGATE_WRITE: | |
e2f282b9 BH |
2893 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
2894 | RESERVE_SPACE(32); | |
1da177e4 LT |
2895 | WRITE32(0); |
2896 | ||
2897 | /* | |
2898 | * TODO: space_limit's in delegations | |
2899 | */ | |
2900 | WRITE32(NFS4_LIMIT_SIZE); | |
2901 | WRITE32(~(u32)0); | |
2902 | WRITE32(~(u32)0); | |
2903 | ||
2904 | /* | |
2905 | * TODO: ACE's in delegations | |
2906 | */ | |
2907 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); | |
2908 | WRITE32(0); | |
2909 | WRITE32(0); | |
2910 | WRITE32(0); /* XXX: is NULL principal ok? */ | |
2911 | ADJUST_ARGS(); | |
2912 | break; | |
d24433cd BH |
2913 | case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */ |
2914 | switch (open->op_why_no_deleg) { | |
2915 | case WND4_CONTENTION: | |
2916 | case WND4_RESOURCE: | |
2917 | RESERVE_SPACE(8); | |
2918 | WRITE32(open->op_why_no_deleg); | |
2919 | WRITE32(0); /* deleg signaling not supported yet */ | |
2920 | break; | |
2921 | default: | |
2922 | RESERVE_SPACE(4); | |
2923 | WRITE32(open->op_why_no_deleg); | |
2924 | } | |
2925 | ADJUST_ARGS(); | |
2926 | break; | |
1da177e4 LT |
2927 | default: |
2928 | BUG(); | |
2929 | } | |
2930 | /* XXX save filehandle here */ | |
2931 | out: | |
695e12f8 | 2932 | return nfserr; |
1da177e4 LT |
2933 | } |
2934 | ||
695e12f8 | 2935 | static __be32 |
b37ad28b | 2936 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 | 2937 | { |
e2f282b9 BH |
2938 | if (!nfserr) |
2939 | nfsd4_encode_stateid(resp, &oc->oc_resp_stateid); | |
1da177e4 | 2940 | |
695e12f8 | 2941 | return nfserr; |
1da177e4 LT |
2942 | } |
2943 | ||
695e12f8 | 2944 | static __be32 |
b37ad28b | 2945 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 | 2946 | { |
e2f282b9 BH |
2947 | if (!nfserr) |
2948 | nfsd4_encode_stateid(resp, &od->od_stateid); | |
1da177e4 | 2949 | |
695e12f8 | 2950 | return nfserr; |
1da177e4 LT |
2951 | } |
2952 | ||
b37ad28b AV |
2953 | static __be32 |
2954 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
44524359 | 2955 | struct nfsd4_read *read) |
1da177e4 LT |
2956 | { |
2957 | u32 eof; | |
afc59400 BF |
2958 | int v; |
2959 | struct page *page; | |
1da177e4 LT |
2960 | unsigned long maxcount; |
2961 | long len; | |
bc749ca4 | 2962 | __be32 *p; |
1da177e4 LT |
2963 | |
2964 | if (nfserr) | |
2965 | return nfserr; | |
2966 | if (resp->xbuf->page_len) | |
2967 | return nfserr_resource; | |
2968 | ||
2969 | RESERVE_SPACE(8); /* eof flag and byte count */ | |
2970 | ||
7adae489 | 2971 | maxcount = svc_max_payload(resp->rqstp); |
1da177e4 LT |
2972 | if (maxcount > read->rd_length) |
2973 | maxcount = read->rd_length; | |
2974 | ||
2975 | len = maxcount; | |
2976 | v = 0; | |
2977 | while (len > 0) { | |
afc59400 BF |
2978 | page = *(resp->rqstp->rq_next_page); |
2979 | if (!page) { /* ran out of pages */ | |
d5f50b0c BF |
2980 | maxcount -= len; |
2981 | break; | |
2982 | } | |
afc59400 | 2983 | resp->rqstp->rq_vec[v].iov_base = page_address(page); |
3cc03b16 | 2984 | resp->rqstp->rq_vec[v].iov_len = |
44524359 | 2985 | len < PAGE_SIZE ? len : PAGE_SIZE; |
afc59400 | 2986 | resp->rqstp->rq_next_page++; |
1da177e4 LT |
2987 | v++; |
2988 | len -= PAGE_SIZE; | |
2989 | } | |
2990 | read->rd_vlen = v; | |
2991 | ||
039a87ca | 2992 | nfserr = nfsd_read_file(read->rd_rqstp, read->rd_fhp, read->rd_filp, |
3cc03b16 | 2993 | read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, |
1da177e4 LT |
2994 | &maxcount); |
2995 | ||
1da177e4 LT |
2996 | if (nfserr) |
2997 | return nfserr; | |
44524359 N |
2998 | eof = (read->rd_offset + maxcount >= |
2999 | read->rd_fhp->fh_dentry->d_inode->i_size); | |
1da177e4 LT |
3000 | |
3001 | WRITE32(eof); | |
3002 | WRITE32(maxcount); | |
3003 | ADJUST_ARGS(); | |
6ed6decc N |
3004 | resp->xbuf->head[0].iov_len = (char*)p |
3005 | - (char*)resp->xbuf->head[0].iov_base; | |
1da177e4 LT |
3006 | resp->xbuf->page_len = maxcount; |
3007 | ||
6ed6decc | 3008 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 3009 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 3010 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 3011 | if (maxcount&3) { |
6ed6decc N |
3012 | RESERVE_SPACE(4); |
3013 | WRITE32(0); | |
1da177e4 LT |
3014 | resp->xbuf->tail[0].iov_base += maxcount&3; |
3015 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 3016 | ADJUST_ARGS(); |
1da177e4 LT |
3017 | } |
3018 | return 0; | |
3019 | } | |
3020 | ||
b37ad28b AV |
3021 | static __be32 |
3022 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
3023 | { |
3024 | int maxcount; | |
3025 | char *page; | |
bc749ca4 | 3026 | __be32 *p; |
1da177e4 LT |
3027 | |
3028 | if (nfserr) | |
3029 | return nfserr; | |
3030 | if (resp->xbuf->page_len) | |
3031 | return nfserr_resource; | |
afc59400 | 3032 | if (!*resp->rqstp->rq_next_page) |
d5f50b0c | 3033 | return nfserr_resource; |
1da177e4 | 3034 | |
afc59400 | 3035 | page = page_address(*(resp->rqstp->rq_next_page++)); |
1da177e4 LT |
3036 | |
3037 | maxcount = PAGE_SIZE; | |
3038 | RESERVE_SPACE(4); | |
3039 | ||
3040 | /* | |
3041 | * XXX: By default, the ->readlink() VFS op will truncate symlinks | |
3042 | * if they would overflow the buffer. Is this kosher in NFSv4? If | |
3043 | * not, one easy fix is: if ->readlink() precisely fills the buffer, | |
3044 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. | |
3045 | */ | |
3046 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); | |
3047 | if (nfserr == nfserr_isdir) | |
3048 | return nfserr_inval; | |
3049 | if (nfserr) | |
3050 | return nfserr; | |
3051 | ||
3052 | WRITE32(maxcount); | |
3053 | ADJUST_ARGS(); | |
6ed6decc N |
3054 | resp->xbuf->head[0].iov_len = (char*)p |
3055 | - (char*)resp->xbuf->head[0].iov_base; | |
3056 | resp->xbuf->page_len = maxcount; | |
1da177e4 | 3057 | |
6ed6decc | 3058 | /* Use rest of head for padding and remaining ops: */ |
6ed6decc | 3059 | resp->xbuf->tail[0].iov_base = p; |
1da177e4 | 3060 | resp->xbuf->tail[0].iov_len = 0; |
1da177e4 | 3061 | if (maxcount&3) { |
6ed6decc N |
3062 | RESERVE_SPACE(4); |
3063 | WRITE32(0); | |
1da177e4 LT |
3064 | resp->xbuf->tail[0].iov_base += maxcount&3; |
3065 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); | |
6ed6decc | 3066 | ADJUST_ARGS(); |
1da177e4 LT |
3067 | } |
3068 | return 0; | |
3069 | } | |
3070 | ||
b37ad28b AV |
3071 | static __be32 |
3072 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
3073 | { |
3074 | int maxcount; | |
3075 | loff_t offset; | |
2ebbc012 | 3076 | __be32 *page, *savep, *tailbase; |
bc749ca4 | 3077 | __be32 *p; |
1da177e4 LT |
3078 | |
3079 | if (nfserr) | |
3080 | return nfserr; | |
3081 | if (resp->xbuf->page_len) | |
3082 | return nfserr_resource; | |
afc59400 | 3083 | if (!*resp->rqstp->rq_next_page) |
d5f50b0c | 3084 | return nfserr_resource; |
1da177e4 | 3085 | |
ab4684d1 | 3086 | RESERVE_SPACE(NFS4_VERIFIER_SIZE); |
1da177e4 LT |
3087 | savep = p; |
3088 | ||
3089 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
3090 | WRITE32(0); | |
3091 | WRITE32(0); | |
3092 | ADJUST_ARGS(); | |
3093 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; | |
bb6e8a9f | 3094 | tailbase = p; |
1da177e4 LT |
3095 | |
3096 | maxcount = PAGE_SIZE; | |
3097 | if (maxcount > readdir->rd_maxcount) | |
3098 | maxcount = readdir->rd_maxcount; | |
3099 | ||
3100 | /* | |
3101 | * Convert from bytes to words, account for the two words already | |
3102 | * written, make sure to leave two words at the end for the next | |
3103 | * pointer and eof field. | |
3104 | */ | |
3105 | maxcount = (maxcount >> 2) - 4; | |
3106 | if (maxcount < 0) { | |
3107 | nfserr = nfserr_toosmall; | |
3108 | goto err_no_verf; | |
3109 | } | |
3110 | ||
afc59400 | 3111 | page = page_address(*(resp->rqstp->rq_next_page++)); |
1da177e4 LT |
3112 | readdir->common.err = 0; |
3113 | readdir->buflen = maxcount; | |
3114 | readdir->buffer = page; | |
3115 | readdir->offset = NULL; | |
3116 | ||
3117 | offset = readdir->rd_cookie; | |
3118 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
3119 | &offset, | |
3120 | &readdir->common, nfsd4_encode_dirent); | |
3121 | if (nfserr == nfs_ok && | |
3122 | readdir->common.err == nfserr_toosmall && | |
3123 | readdir->buffer == page) | |
3124 | nfserr = nfserr_toosmall; | |
1da177e4 LT |
3125 | if (nfserr) |
3126 | goto err_no_verf; | |
3127 | ||
3128 | if (readdir->offset) | |
3129 | xdr_encode_hyper(readdir->offset, offset); | |
3130 | ||
3131 | p = readdir->buffer; | |
3132 | *p++ = 0; /* no more entries */ | |
3133 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
afc59400 BF |
3134 | resp->xbuf->page_len = ((char*)p) - |
3135 | (char*)page_address(*(resp->rqstp->rq_next_page-1)); | |
1da177e4 | 3136 | |
bb6e8a9f | 3137 | /* Use rest of head for padding and remaining ops: */ |
bb6e8a9f | 3138 | resp->xbuf->tail[0].iov_base = tailbase; |
1da177e4 LT |
3139 | resp->xbuf->tail[0].iov_len = 0; |
3140 | resp->p = resp->xbuf->tail[0].iov_base; | |
bb6e8a9f | 3141 | resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; |
1da177e4 LT |
3142 | |
3143 | return 0; | |
3144 | err_no_verf: | |
3145 | p = savep; | |
3146 | ADJUST_ARGS(); | |
3147 | return nfserr; | |
3148 | } | |
3149 | ||
695e12f8 | 3150 | static __be32 |
b37ad28b | 3151 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 3152 | { |
bc749ca4 | 3153 | __be32 *p; |
1da177e4 LT |
3154 | |
3155 | if (!nfserr) { | |
3156 | RESERVE_SPACE(20); | |
c654b8a9 | 3157 | write_cinfo(&p, &remove->rm_cinfo); |
1da177e4 LT |
3158 | ADJUST_ARGS(); |
3159 | } | |
695e12f8 | 3160 | return nfserr; |
1da177e4 LT |
3161 | } |
3162 | ||
695e12f8 | 3163 | static __be32 |
b37ad28b | 3164 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 3165 | { |
bc749ca4 | 3166 | __be32 *p; |
1da177e4 LT |
3167 | |
3168 | if (!nfserr) { | |
3169 | RESERVE_SPACE(40); | |
c654b8a9 BF |
3170 | write_cinfo(&p, &rename->rn_sinfo); |
3171 | write_cinfo(&p, &rename->rn_tinfo); | |
1da177e4 LT |
3172 | ADJUST_ARGS(); |
3173 | } | |
695e12f8 | 3174 | return nfserr; |
1da177e4 LT |
3175 | } |
3176 | ||
695e12f8 | 3177 | static __be32 |
22b6dee8 | 3178 | nfsd4_do_encode_secinfo(struct nfsd4_compoundres *resp, |
a77c806f | 3179 | __be32 nfserr, struct svc_export *exp) |
dcb488a3 | 3180 | { |
676e4ebd | 3181 | u32 i, nflavs, supported; |
4796f457 BF |
3182 | struct exp_flavor_info *flavs; |
3183 | struct exp_flavor_info def_flavs[2]; | |
676e4ebd CL |
3184 | __be32 *p, *flavorsp; |
3185 | static bool report = true; | |
dcb488a3 AA |
3186 | |
3187 | if (nfserr) | |
3188 | goto out; | |
4796f457 BF |
3189 | if (exp->ex_nflavors) { |
3190 | flavs = exp->ex_flavors; | |
3191 | nflavs = exp->ex_nflavors; | |
3192 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
3193 | flavs = def_flavs; | |
3194 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
3195 | nflavs = 2; | |
3196 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
3197 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
3198 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
3199 | nflavs = 1; | |
3200 | flavs[0].pseudoflavor | |
3201 | = svcauth_gss_flavor(exp->ex_client); | |
3202 | } else { | |
3203 | nflavs = 1; | |
3204 | flavs[0].pseudoflavor | |
3205 | = exp->ex_client->flavour->flavour; | |
3206 | } | |
3207 | } | |
3208 | ||
676e4ebd | 3209 | supported = 0; |
dcb488a3 | 3210 | RESERVE_SPACE(4); |
676e4ebd | 3211 | flavorsp = p++; /* to be backfilled later */ |
dcb488a3 | 3212 | ADJUST_ARGS(); |
676e4ebd | 3213 | |
4796f457 | 3214 | for (i = 0; i < nflavs; i++) { |
676e4ebd | 3215 | rpc_authflavor_t pf = flavs[i].pseudoflavor; |
a77c806f | 3216 | struct rpcsec_gss_info info; |
dcb488a3 | 3217 | |
676e4ebd CL |
3218 | if (rpcauth_get_gssinfo(pf, &info) == 0) { |
3219 | supported++; | |
ed9411a0 | 3220 | RESERVE_SPACE(4 + 4 + info.oid.len + 4 + 4); |
dcb488a3 | 3221 | WRITE32(RPC_AUTH_GSS); |
a77c806f CL |
3222 | WRITE32(info.oid.len); |
3223 | WRITEMEM(info.oid.data, info.oid.len); | |
a77c806f | 3224 | WRITE32(info.qop); |
a77c806f | 3225 | WRITE32(info.service); |
dcb488a3 | 3226 | ADJUST_ARGS(); |
676e4ebd CL |
3227 | } else if (pf < RPC_AUTH_MAXFLAVOR) { |
3228 | supported++; | |
dcb488a3 | 3229 | RESERVE_SPACE(4); |
676e4ebd | 3230 | WRITE32(pf); |
dcb488a3 | 3231 | ADJUST_ARGS(); |
676e4ebd CL |
3232 | } else { |
3233 | if (report) | |
3234 | pr_warn("NFS: SECINFO: security flavor %u " | |
3235 | "is not supported\n", pf); | |
dcb488a3 AA |
3236 | } |
3237 | } | |
a77c806f | 3238 | |
676e4ebd CL |
3239 | if (nflavs != supported) |
3240 | report = false; | |
3241 | *flavorsp = htonl(supported); | |
3242 | ||
dcb488a3 AA |
3243 | out: |
3244 | if (exp) | |
3245 | exp_put(exp); | |
695e12f8 | 3246 | return nfserr; |
dcb488a3 AA |
3247 | } |
3248 | ||
22b6dee8 MJ |
3249 | static __be32 |
3250 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3251 | struct nfsd4_secinfo *secinfo) | |
3252 | { | |
3253 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->si_exp); | |
3254 | } | |
3255 | ||
3256 | static __be32 | |
3257 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, | |
3258 | struct nfsd4_secinfo_no_name *secinfo) | |
3259 | { | |
3260 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->sin_exp); | |
3261 | } | |
3262 | ||
1da177e4 LT |
3263 | /* |
3264 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
3265 | * regardless of the error status. | |
3266 | */ | |
695e12f8 | 3267 | static __be32 |
b37ad28b | 3268 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 3269 | { |
bc749ca4 | 3270 | __be32 *p; |
1da177e4 | 3271 | |
18032ca0 | 3272 | RESERVE_SPACE(16); |
1da177e4 | 3273 | if (nfserr) { |
18032ca0 DQ |
3274 | WRITE32(3); |
3275 | WRITE32(0); | |
1da177e4 LT |
3276 | WRITE32(0); |
3277 | WRITE32(0); | |
3278 | } | |
3279 | else { | |
18032ca0 | 3280 | WRITE32(3); |
1da177e4 LT |
3281 | WRITE32(setattr->sa_bmval[0]); |
3282 | WRITE32(setattr->sa_bmval[1]); | |
18032ca0 | 3283 | WRITE32(setattr->sa_bmval[2]); |
1da177e4 LT |
3284 | } |
3285 | ADJUST_ARGS(); | |
695e12f8 | 3286 | return nfserr; |
1da177e4 LT |
3287 | } |
3288 | ||
695e12f8 | 3289 | static __be32 |
b37ad28b | 3290 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 3291 | { |
bc749ca4 | 3292 | __be32 *p; |
1da177e4 LT |
3293 | |
3294 | if (!nfserr) { | |
ab4684d1 | 3295 | RESERVE_SPACE(8 + NFS4_VERIFIER_SIZE); |
1da177e4 | 3296 | WRITEMEM(&scd->se_clientid, 8); |
ab4684d1 | 3297 | WRITEMEM(&scd->se_confirm, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
3298 | ADJUST_ARGS(); |
3299 | } | |
3300 | else if (nfserr == nfserr_clid_inuse) { | |
3301 | RESERVE_SPACE(8); | |
3302 | WRITE32(0); | |
3303 | WRITE32(0); | |
3304 | ADJUST_ARGS(); | |
3305 | } | |
695e12f8 | 3306 | return nfserr; |
1da177e4 LT |
3307 | } |
3308 | ||
695e12f8 | 3309 | static __be32 |
b37ad28b | 3310 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 3311 | { |
bc749ca4 | 3312 | __be32 *p; |
1da177e4 LT |
3313 | |
3314 | if (!nfserr) { | |
3315 | RESERVE_SPACE(16); | |
3316 | WRITE32(write->wr_bytes_written); | |
3317 | WRITE32(write->wr_how_written); | |
ab4684d1 | 3318 | WRITEMEM(write->wr_verifier.data, NFS4_VERIFIER_SIZE); |
1da177e4 LT |
3319 | ADJUST_ARGS(); |
3320 | } | |
695e12f8 | 3321 | return nfserr; |
1da177e4 LT |
3322 | } |
3323 | ||
57266a6e BF |
3324 | static const u32 nfs4_minimal_spo_must_enforce[2] = { |
3325 | [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | | |
3326 | 1 << (OP_EXCHANGE_ID - 32) | | |
3327 | 1 << (OP_CREATE_SESSION - 32) | | |
3328 | 1 << (OP_DESTROY_SESSION - 32) | | |
3329 | 1 << (OP_DESTROY_CLIENTID - 32) | |
3330 | }; | |
3331 | ||
2db134eb | 3332 | static __be32 |
57b7b43b | 3333 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3334 | struct nfsd4_exchange_id *exid) |
3335 | { | |
bc749ca4 | 3336 | __be32 *p; |
0733d213 AA |
3337 | char *major_id; |
3338 | char *server_scope; | |
3339 | int major_id_sz; | |
3340 | int server_scope_sz; | |
3341 | uint64_t minor_id = 0; | |
3342 | ||
3343 | if (nfserr) | |
3344 | return nfserr; | |
3345 | ||
3346 | major_id = utsname()->nodename; | |
3347 | major_id_sz = strlen(major_id); | |
3348 | server_scope = utsname()->nodename; | |
3349 | server_scope_sz = strlen(server_scope); | |
3350 | ||
3351 | RESERVE_SPACE( | |
3352 | 8 /* eir_clientid */ + | |
3353 | 4 /* eir_sequenceid */ + | |
3354 | 4 /* eir_flags */ + | |
3355 | 4 /* spr_how (SP4_NONE) */ + | |
3356 | 8 /* so_minor_id */ + | |
3357 | 4 /* so_major_id.len */ + | |
3358 | (XDR_QUADLEN(major_id_sz) * 4) + | |
3359 | 4 /* eir_server_scope.len */ + | |
3360 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
3361 | 4 /* eir_server_impl_id.count (0) */); | |
3362 | ||
3363 | WRITEMEM(&exid->clientid, 8); | |
3364 | WRITE32(exid->seqid); | |
3365 | WRITE32(exid->flags); | |
3366 | ||
3367 | /* state_protect4_r. Currently only support SP4_NONE */ | |
3368 | BUG_ON(exid->spa_how != SP4_NONE); | |
3369 | WRITE32(exid->spa_how); | |
57266a6e BF |
3370 | switch (exid->spa_how) { |
3371 | case SP4_NONE: | |
3372 | break; | |
3373 | case SP4_MACH_CRED: | |
3374 | /* spo_must_enforce bitmap: */ | |
3375 | WRITE32(2); | |
3376 | WRITE32(nfs4_minimal_spo_must_enforce[0]); | |
3377 | WRITE32(nfs4_minimal_spo_must_enforce[1]); | |
3378 | /* empty spo_must_allow bitmap: */ | |
3379 | WRITE32(0); | |
3380 | break; | |
3381 | default: | |
3382 | WARN_ON_ONCE(1); | |
3383 | } | |
0733d213 AA |
3384 | |
3385 | /* The server_owner struct */ | |
3386 | WRITE64(minor_id); /* Minor id */ | |
3387 | /* major id */ | |
3388 | WRITE32(major_id_sz); | |
3389 | WRITEMEM(major_id, major_id_sz); | |
3390 | ||
3391 | /* Server scope */ | |
3392 | WRITE32(server_scope_sz); | |
3393 | WRITEMEM(server_scope, server_scope_sz); | |
3394 | ||
3395 | /* Implementation id */ | |
3396 | WRITE32(0); /* zero length nfs_impl_id4 array */ | |
3397 | ADJUST_ARGS(); | |
3398 | return 0; | |
2db134eb AA |
3399 | } |
3400 | ||
3401 | static __be32 | |
57b7b43b | 3402 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3403 | struct nfsd4_create_session *sess) |
3404 | { | |
bc749ca4 | 3405 | __be32 *p; |
ec6b5d7b AA |
3406 | |
3407 | if (nfserr) | |
3408 | return nfserr; | |
3409 | ||
3410 | RESERVE_SPACE(24); | |
3411 | WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3412 | WRITE32(sess->seqid); | |
3413 | WRITE32(sess->flags); | |
3414 | ADJUST_ARGS(); | |
3415 | ||
3416 | RESERVE_SPACE(28); | |
3417 | WRITE32(0); /* headerpadsz */ | |
3418 | WRITE32(sess->fore_channel.maxreq_sz); | |
3419 | WRITE32(sess->fore_channel.maxresp_sz); | |
3420 | WRITE32(sess->fore_channel.maxresp_cached); | |
3421 | WRITE32(sess->fore_channel.maxops); | |
3422 | WRITE32(sess->fore_channel.maxreqs); | |
3423 | WRITE32(sess->fore_channel.nr_rdma_attrs); | |
3424 | ADJUST_ARGS(); | |
3425 | ||
3426 | if (sess->fore_channel.nr_rdma_attrs) { | |
3427 | RESERVE_SPACE(4); | |
3428 | WRITE32(sess->fore_channel.rdma_attrs); | |
3429 | ADJUST_ARGS(); | |
3430 | } | |
3431 | ||
3432 | RESERVE_SPACE(28); | |
3433 | WRITE32(0); /* headerpadsz */ | |
3434 | WRITE32(sess->back_channel.maxreq_sz); | |
3435 | WRITE32(sess->back_channel.maxresp_sz); | |
3436 | WRITE32(sess->back_channel.maxresp_cached); | |
3437 | WRITE32(sess->back_channel.maxops); | |
3438 | WRITE32(sess->back_channel.maxreqs); | |
3439 | WRITE32(sess->back_channel.nr_rdma_attrs); | |
3440 | ADJUST_ARGS(); | |
3441 | ||
3442 | if (sess->back_channel.nr_rdma_attrs) { | |
3443 | RESERVE_SPACE(4); | |
3444 | WRITE32(sess->back_channel.rdma_attrs); | |
3445 | ADJUST_ARGS(); | |
3446 | } | |
3447 | return 0; | |
2db134eb AA |
3448 | } |
3449 | ||
3450 | static __be32 | |
57b7b43b | 3451 | nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3452 | struct nfsd4_destroy_session *destroy_session) |
3453 | { | |
2db134eb AA |
3454 | return nfserr; |
3455 | } | |
3456 | ||
e1ca12df | 3457 | static __be32 |
d1829b38 | 3458 | nfsd4_encode_free_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
e1ca12df BS |
3459 | struct nfsd4_free_stateid *free_stateid) |
3460 | { | |
3461 | __be32 *p; | |
3462 | ||
3463 | if (nfserr) | |
3464 | return nfserr; | |
3465 | ||
3466 | RESERVE_SPACE(4); | |
d1829b38 | 3467 | *p++ = nfserr; |
e1ca12df BS |
3468 | ADJUST_ARGS(); |
3469 | return nfserr; | |
3470 | } | |
3471 | ||
c47d832b | 3472 | static __be32 |
57b7b43b | 3473 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
3474 | struct nfsd4_sequence *seq) |
3475 | { | |
bc749ca4 | 3476 | __be32 *p; |
b85d4c01 BH |
3477 | |
3478 | if (nfserr) | |
3479 | return nfserr; | |
3480 | ||
3481 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20); | |
3482 | WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); | |
3483 | WRITE32(seq->seqid); | |
3484 | WRITE32(seq->slotid); | |
b7d7ca35 BF |
3485 | /* Note slotid's are numbered from zero: */ |
3486 | WRITE32(seq->maxslots - 1); /* sr_highest_slotid */ | |
3487 | WRITE32(seq->maxslots - 1); /* sr_target_highest_slotid */ | |
0d7bb719 | 3488 | WRITE32(seq->status_flags); |
b85d4c01 BH |
3489 | |
3490 | ADJUST_ARGS(); | |
557ce264 | 3491 | resp->cstate.datap = p; /* DRC cache data pointer */ |
b85d4c01 | 3492 | return 0; |
2db134eb AA |
3493 | } |
3494 | ||
2355c596 | 3495 | static __be32 |
57b7b43b | 3496 | nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
17456804 BS |
3497 | struct nfsd4_test_stateid *test_stateid) |
3498 | { | |
03cfb420 | 3499 | struct nfsd4_test_stateid_id *stateid, *next; |
17456804 | 3500 | __be32 *p; |
17456804 | 3501 | |
03cfb420 | 3502 | RESERVE_SPACE(4 + (4 * test_stateid->ts_num_ids)); |
17456804 | 3503 | *p++ = htonl(test_stateid->ts_num_ids); |
17456804 | 3504 | |
03cfb420 | 3505 | list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) { |
02f5fde5 | 3506 | *p++ = stateid->ts_id_status; |
17456804 | 3507 | } |
17456804 | 3508 | |
03cfb420 | 3509 | ADJUST_ARGS(); |
17456804 BS |
3510 | return nfserr; |
3511 | } | |
3512 | ||
695e12f8 BH |
3513 | static __be32 |
3514 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
3515 | { | |
3516 | return nfserr; | |
3517 | } | |
3518 | ||
3519 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); | |
3520 | ||
2db134eb AA |
3521 | /* |
3522 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
3523 | * since we don't need to filter out obsolete ops as this is | |
3524 | * done in the decoding phase. | |
3525 | */ | |
695e12f8 | 3526 | static nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
3527 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
3528 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
3529 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
3530 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
3531 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
3532 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
3533 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
3534 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
3535 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
3536 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
3537 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
3538 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
3539 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
3540 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
3541 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3542 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 3543 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
3544 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
3545 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
3546 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3547 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3548 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3549 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
3550 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
3551 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
3552 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
3553 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
3554 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
3555 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3556 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
3557 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
3558 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
3559 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
3560 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
3561 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
3562 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
3563 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
3564 | |
3565 | /* NFSv4.1 operations */ | |
3566 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
1d1bc8f2 | 3567 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
2db134eb AA |
3568 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
3569 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
3570 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session, | |
e1ca12df | 3571 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_free_stateid, |
2db134eb AA |
3572 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3573 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, | |
3574 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
3575 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
3576 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
3577 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
22b6dee8 | 3578 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
2db134eb AA |
3579 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
3580 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
17456804 | 3581 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, |
2db134eb AA |
3582 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
3583 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
3584 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
695e12f8 BH |
3585 | }; |
3586 | ||
496c262c AA |
3587 | /* |
3588 | * Calculate the total amount of memory that the compound response has taken | |
58e7b33a | 3589 | * after encoding the current operation with pad. |
496c262c | 3590 | * |
58e7b33a MJ |
3591 | * pad: if operation is non-idempotent, pad was calculate by op_rsize_bop() |
3592 | * which was specified at nfsd4_operation, else pad is zero. | |
496c262c | 3593 | * |
58e7b33a | 3594 | * Compare this length to the session se_fmaxresp_sz and se_fmaxresp_cached. |
496c262c AA |
3595 | * |
3596 | * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so | |
3597 | * will be at least a page and will therefore hold the xdr_buf head. | |
3598 | */ | |
57b7b43b | 3599 | __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad) |
496c262c | 3600 | { |
496c262c | 3601 | struct xdr_buf *xb = &resp->rqstp->rq_res; |
496c262c AA |
3602 | struct nfsd4_session *session = NULL; |
3603 | struct nfsd4_slot *slot = resp->cstate.slot; | |
58e7b33a | 3604 | u32 length, tlen = 0; |
496c262c AA |
3605 | |
3606 | if (!nfsd4_has_session(&resp->cstate)) | |
58e7b33a | 3607 | return 0; |
496c262c AA |
3608 | |
3609 | session = resp->cstate.session; | |
58e7b33a MJ |
3610 | if (session == NULL) |
3611 | return 0; | |
496c262c AA |
3612 | |
3613 | if (xb->page_len == 0) { | |
3614 | length = (char *)resp->p - (char *)xb->head[0].iov_base + pad; | |
3615 | } else { | |
3616 | if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0) | |
3617 | tlen = (char *)resp->p - (char *)xb->tail[0].iov_base; | |
3618 | ||
3619 | length = xb->head[0].iov_len + xb->page_len + tlen + pad; | |
3620 | } | |
3621 | dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__, | |
3622 | length, xb->page_len, tlen, pad); | |
3623 | ||
58e7b33a MJ |
3624 | if (length > session->se_fchannel.maxresp_sz) |
3625 | return nfserr_rep_too_big; | |
3626 | ||
73e79482 | 3627 | if ((slot->sl_flags & NFSD4_SLOT_CACHETHIS) && |
58e7b33a | 3628 | length > session->se_fchannel.maxresp_cached) |
496c262c | 3629 | return nfserr_rep_too_big_to_cache; |
58e7b33a MJ |
3630 | |
3631 | return 0; | |
496c262c AA |
3632 | } |
3633 | ||
1da177e4 LT |
3634 | void |
3635 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3636 | { | |
9411b1d4 | 3637 | struct nfs4_stateowner *so = resp->cstate.replay_owner; |
2ebbc012 | 3638 | __be32 *statp; |
bc749ca4 | 3639 | __be32 *p; |
1da177e4 LT |
3640 | |
3641 | RESERVE_SPACE(8); | |
3642 | WRITE32(op->opnum); | |
3643 | statp = p++; /* to be backfilled at the end */ | |
3644 | ADJUST_ARGS(); | |
3645 | ||
695e12f8 BH |
3646 | if (op->opnum == OP_ILLEGAL) |
3647 | goto status; | |
3648 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || | |
3649 | !nfsd4_enc_ops[op->opnum]); | |
3650 | op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u); | |
496c262c | 3651 | /* nfsd4_check_drc_limit guarantees enough room for error status */ |
58e7b33a MJ |
3652 | if (!op->status) |
3653 | op->status = nfsd4_check_resp_size(resp, 0); | |
9411b1d4 BF |
3654 | if (so) { |
3655 | so->so_replay.rp_status = op->status; | |
3656 | so->so_replay.rp_buflen = (char *)resp->p - (char *)(statp+1); | |
3657 | memcpy(so->so_replay.rp_buf, statp+1, so->so_replay.rp_buflen); | |
3658 | } | |
695e12f8 | 3659 | status: |
1da177e4 LT |
3660 | /* |
3661 | * Note: We write the status directly, instead of using WRITE32(), | |
3662 | * since it is already in network byte order. | |
3663 | */ | |
3664 | *statp = op->status; | |
3665 | } | |
3666 | ||
3667 | /* | |
3668 | * Encode the reply stored in the stateowner reply cache | |
3669 | * | |
3670 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
3671 | * previously sent already encoded operation. | |
3672 | * | |
3673 | * called with nfs4_lock_state() held | |
3674 | */ | |
3675 | void | |
3676 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
3677 | { | |
bc749ca4 | 3678 | __be32 *p; |
1da177e4 LT |
3679 | struct nfs4_replay *rp = op->replay; |
3680 | ||
3681 | BUG_ON(!rp); | |
3682 | ||
3683 | RESERVE_SPACE(8); | |
3684 | WRITE32(op->opnum); | |
3685 | *p++ = rp->rp_status; /* already xdr'ed */ | |
3686 | ADJUST_ARGS(); | |
3687 | ||
3688 | RESERVE_SPACE(rp->rp_buflen); | |
3689 | WRITEMEM(rp->rp_buf, rp->rp_buflen); | |
3690 | ADJUST_ARGS(); | |
3691 | } | |
3692 | ||
1da177e4 | 3693 | int |
2ebbc012 | 3694 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
3695 | { |
3696 | return xdr_ressize_check(rqstp, p); | |
3697 | } | |
3698 | ||
3e98abff | 3699 | int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp) |
1da177e4 | 3700 | { |
3e98abff BF |
3701 | struct svc_rqst *rqstp = rq; |
3702 | struct nfsd4_compoundargs *args = rqstp->rq_argp; | |
3703 | ||
1da177e4 LT |
3704 | if (args->ops != args->iops) { |
3705 | kfree(args->ops); | |
3706 | args->ops = args->iops; | |
3707 | } | |
f99d49ad JJ |
3708 | kfree(args->tmpp); |
3709 | args->tmpp = NULL; | |
1da177e4 LT |
3710 | while (args->to_free) { |
3711 | struct tmpbuf *tb = args->to_free; | |
3712 | args->to_free = tb->next; | |
3713 | tb->release(tb->buf); | |
3714 | kfree(tb); | |
3715 | } | |
3e98abff | 3716 | return 1; |
1da177e4 LT |
3717 | } |
3718 | ||
3719 | int | |
2ebbc012 | 3720 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
1da177e4 | 3721 | { |
1da177e4 LT |
3722 | args->p = p; |
3723 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; | |
3724 | args->pagelist = rqstp->rq_arg.pages; | |
3725 | args->pagelen = rqstp->rq_arg.page_len; | |
3726 | args->tmpp = NULL; | |
3727 | args->to_free = NULL; | |
3728 | args->ops = args->iops; | |
3729 | args->rqstp = rqstp; | |
3730 | ||
3e98abff | 3731 | return !nfsd4_decode_compound(args); |
1da177e4 LT |
3732 | } |
3733 | ||
3734 | int | |
2ebbc012 | 3735 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
1da177e4 LT |
3736 | { |
3737 | /* | |
3738 | * All that remains is to write the tag and operation count... | |
3739 | */ | |
557ce264 | 3740 | struct nfsd4_compound_state *cs = &resp->cstate; |
1da177e4 LT |
3741 | struct kvec *iov; |
3742 | p = resp->tagp; | |
3743 | *p++ = htonl(resp->taglen); | |
3744 | memcpy(p, resp->tag, resp->taglen); | |
3745 | p += XDR_QUADLEN(resp->taglen); | |
3746 | *p++ = htonl(resp->opcnt); | |
3747 | ||
3748 | if (rqstp->rq_res.page_len) | |
3749 | iov = &rqstp->rq_res.tail[0]; | |
3750 | else | |
3751 | iov = &rqstp->rq_res.head[0]; | |
3752 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; | |
3753 | BUG_ON(iov->iov_len > PAGE_SIZE); | |
26c0c75e BF |
3754 | if (nfsd4_has_session(cs)) { |
3755 | if (cs->status != nfserr_replay_cache) { | |
3756 | nfsd4_store_cache_entry(resp); | |
73e79482 | 3757 | cs->slot->sl_flags &= ~NFSD4_SLOT_INUSE; |
26c0c75e | 3758 | } |
d7682988 | 3759 | /* Renew the clientid on success and on replay */ |
221a6876 BF |
3760 | put_client_renew(cs->session->se_client); |
3761 | nfsd4_put_session(cs->session); | |
da3846a2 | 3762 | } |
1da177e4 LT |
3763 | return 1; |
3764 | } | |
3765 | ||
3766 | /* | |
3767 | * Local variables: | |
3768 | * c-basic-offset: 8 | |
3769 | * End: | |
3770 | */ |