Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Server-side XDR for NFSv4 |
3 | * | |
4 | * Copyright (c) 2002 The Regents of the University of Michigan. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Kendrick Smith <kmsmith@umich.edu> | |
8 | * Andy Adamson <andros@umich.edu> | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or without | |
11 | * modification, are permitted provided that the following conditions | |
12 | * are met: | |
13 | * | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions and the following disclaimer. | |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in the | |
18 | * documentation and/or other materials provided with the distribution. | |
19 | * 3. Neither the name of the University nor the names of its | |
20 | * contributors may be used to endorse or promote products derived | |
21 | * from this software without specific prior written permission. | |
22 | * | |
23 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
24 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
25 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
26 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
30 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
31 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
32 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
33 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
1da177e4 LT |
34 | */ |
35 | ||
96bcad50 | 36 | #include <linux/file.h> |
5a0e3ad6 | 37 | #include <linux/slab.h> |
1da177e4 | 38 | #include <linux/namei.h> |
341eb184 | 39 | #include <linux/statfs.h> |
0733d213 | 40 | #include <linux/utsname.h> |
17456804 | 41 | #include <linux/pagemap.h> |
4796f457 | 42 | #include <linux/sunrpc/svcauth_gss.h> |
84e1b21d | 43 | #include <linux/sunrpc/addr.h> |
23e50fe3 FL |
44 | #include <linux/xattr.h> |
45 | #include <uapi/linux/xattr.h> | |
9a74af21 | 46 | |
2ca72e17 BF |
47 | #include "idmap.h" |
48 | #include "acl.h" | |
9a74af21 | 49 | #include "xdr4.h" |
0a3adade | 50 | #include "vfs.h" |
17456804 | 51 | #include "state.h" |
1091006c | 52 | #include "cache.h" |
3d733711 | 53 | #include "netns.h" |
9cf514cc | 54 | #include "pnfs.h" |
5c4583b2 | 55 | #include "filecache.h" |
2ca72e17 | 56 | |
08281341 CL |
57 | #include "trace.h" |
58 | ||
18032ca0 DQ |
59 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
60 | #include <linux/security.h> | |
61 | #endif | |
62 | ||
63 | ||
1da177e4 LT |
64 | #define NFSDDBG_FACILITY NFSDDBG_XDR |
65 | ||
5cf23dbb | 66 | const u32 nfsd_suppattrs[3][3] = { |
916d2d84 BF |
67 | {NFSD4_SUPPORTED_ATTRS_WORD0, |
68 | NFSD4_SUPPORTED_ATTRS_WORD1, | |
69 | NFSD4_SUPPORTED_ATTRS_WORD2}, | |
70 | ||
71 | {NFSD4_1_SUPPORTED_ATTRS_WORD0, | |
72 | NFSD4_1_SUPPORTED_ATTRS_WORD1, | |
73 | NFSD4_1_SUPPORTED_ATTRS_WORD2}, | |
74 | ||
75 | {NFSD4_1_SUPPORTED_ATTRS_WORD0, | |
76 | NFSD4_1_SUPPORTED_ATTRS_WORD1, | |
77 | NFSD4_2_SUPPORTED_ATTRS_WORD2}, | |
78 | }; | |
79 | ||
42ca0993 BF |
80 | /* |
81 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing | |
82 | * directory in order to indicate to the client that a filesystem boundary is present | |
83 | * We use a fixed fsid for a referral | |
84 | */ | |
85 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL | |
86 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL | |
87 | ||
b37ad28b | 88 | static __be32 |
a36b1725 | 89 | check_filename(char *str, int len) |
1da177e4 LT |
90 | { |
91 | int i; | |
92 | ||
93 | if (len == 0) | |
94 | return nfserr_inval; | |
000dfa18 CL |
95 | if (len > NFS4_MAXNAMLEN) |
96 | return nfserr_nametoolong; | |
1da177e4 | 97 | if (isdotent(str, len)) |
a36b1725 | 98 | return nfserr_badname; |
1da177e4 LT |
99 | for (i = 0; i < len; i++) |
100 | if (str[i] == '/') | |
a36b1725 | 101 | return nfserr_badname; |
1da177e4 LT |
102 | return 0; |
103 | } | |
104 | ||
1da177e4 | 105 | #define DECODE_HEAD \ |
2ebbc012 | 106 | __be32 *p; \ |
b37ad28b | 107 | __be32 status |
1da177e4 LT |
108 | #define DECODE_TAIL \ |
109 | status = 0; \ | |
110 | out: \ | |
111 | return status; \ | |
112 | xdr_error: \ | |
817cb9d4 CL |
113 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
114 | __FILE__, __LINE__); \ | |
1da177e4 LT |
115 | status = nfserr_bad_xdr; \ |
116 | goto out | |
117 | ||
1da177e4 LT |
118 | #define READMEM(x,nbytes) do { \ |
119 | x = (char *)p; \ | |
120 | p += XDR_QUADLEN(nbytes); \ | |
121 | } while (0) | |
122 | #define SAVEMEM(x,nbytes) do { \ | |
123 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ | |
124 | savemem(argp, p, nbytes) : \ | |
125 | (char *)p)) { \ | |
817cb9d4 CL |
126 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
127 | __FILE__, __LINE__); \ | |
1da177e4 LT |
128 | goto xdr_error; \ |
129 | } \ | |
130 | p += XDR_QUADLEN(nbytes); \ | |
131 | } while (0) | |
132 | #define COPYMEM(x,nbytes) do { \ | |
133 | memcpy((x), p, nbytes); \ | |
134 | p += XDR_QUADLEN(nbytes); \ | |
135 | } while (0) | |
c1346a12 CL |
136 | #define READ_BUF(nbytes) \ |
137 | do { \ | |
138 | p = xdr_inline_decode(argp->xdr,\ | |
139 | nbytes); \ | |
140 | if (!p) \ | |
141 | goto xdr_error; \ | |
142 | } while (0) | |
2b86e3aa | 143 | |
60adfc50 AA |
144 | static int zero_clientid(clientid_t *clid) |
145 | { | |
146 | return (clid->cl_boot == 0) && (clid->cl_id == 0); | |
147 | } | |
148 | ||
2d8498db | 149 | /** |
d5e23383 | 150 | * svcxdr_tmpalloc - allocate memory to be freed after compound processing |
ce043ac8 | 151 | * @argp: NFSv4 compound argument structure |
ed992753 | 152 | * @len: length of buffer to allocate |
2d8498db | 153 | * |
ed992753 TM |
154 | * Allocates a buffer of size @len to be freed when processing the compound |
155 | * operation described in @argp finishes. | |
2d8498db | 156 | */ |
d5e23383 BF |
157 | static void * |
158 | svcxdr_tmpalloc(struct nfsd4_compoundargs *argp, u32 len) | |
1da177e4 | 159 | { |
d5e23383 | 160 | struct svcxdr_tmpbuf *tb; |
1da177e4 | 161 | |
d5e23383 | 162 | tb = kmalloc(sizeof(*tb) + len, GFP_KERNEL); |
1da177e4 | 163 | if (!tb) |
d5e23383 | 164 | return NULL; |
1da177e4 LT |
165 | tb->next = argp->to_free; |
166 | argp->to_free = tb; | |
d5e23383 | 167 | return tb->buf; |
1da177e4 LT |
168 | } |
169 | ||
29c353b3 BF |
170 | /* |
171 | * For xdr strings that need to be passed to other kernel api's | |
172 | * as null-terminated strings. | |
173 | * | |
174 | * Note null-terminating in place usually isn't safe since the | |
175 | * buffer might end on a page boundary. | |
176 | */ | |
177 | static char * | |
178 | svcxdr_dupstr(struct nfsd4_compoundargs *argp, void *buf, u32 len) | |
179 | { | |
d5e23383 | 180 | char *p = svcxdr_tmpalloc(argp, len + 1); |
29c353b3 BF |
181 | |
182 | if (!p) | |
183 | return NULL; | |
184 | memcpy(p, buf, len); | |
185 | p[len] = '\0'; | |
29c353b3 | 186 | return p; |
1da177e4 LT |
187 | } |
188 | ||
2d8498db CH |
189 | /** |
190 | * savemem - duplicate a chunk of memory for later processing | |
191 | * @argp: NFSv4 compound argument structure to be freed with | |
192 | * @p: pointer to be duplicated | |
193 | * @nbytes: length to be duplicated | |
194 | * | |
195 | * Returns a pointer to a copy of @nbytes bytes of memory at @p | |
196 | * that are preserved until processing of the NFSv4 compound | |
197 | * operation described by @argp finishes. | |
198 | */ | |
2ebbc012 | 199 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
1da177e4 | 200 | { |
d5e23383 BF |
201 | void *ret; |
202 | ||
203 | ret = svcxdr_tmpalloc(argp, nbytes); | |
204 | if (!ret) | |
1da177e4 | 205 | return NULL; |
d5e23383 BF |
206 | memcpy(ret, p, nbytes); |
207 | return ret; | |
1da177e4 LT |
208 | } |
209 | ||
5dcbfabb CL |
210 | |
211 | /* | |
212 | * NFSv4 basic data type decoders | |
213 | */ | |
214 | ||
1a994408 CL |
215 | /* |
216 | * This helper handles variable-length opaques which belong to protocol | |
217 | * elements that this implementation does not support. | |
218 | */ | |
219 | static __be32 | |
220 | nfsd4_decode_ignored_string(struct nfsd4_compoundargs *argp, u32 maxlen) | |
221 | { | |
222 | u32 len; | |
223 | ||
224 | if (xdr_stream_decode_u32(argp->xdr, &len) < 0) | |
225 | return nfserr_bad_xdr; | |
226 | if (maxlen && len > maxlen) | |
227 | return nfserr_bad_xdr; | |
228 | if (!xdr_inline_decode(argp->xdr, len)) | |
229 | return nfserr_bad_xdr; | |
230 | ||
231 | return nfs_ok; | |
232 | } | |
233 | ||
5dcbfabb CL |
234 | static __be32 |
235 | nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o) | |
236 | { | |
237 | __be32 *p; | |
238 | u32 len; | |
239 | ||
240 | if (xdr_stream_decode_u32(argp->xdr, &len) < 0) | |
241 | return nfserr_bad_xdr; | |
242 | if (len == 0 || len > NFS4_OPAQUE_LIMIT) | |
243 | return nfserr_bad_xdr; | |
244 | p = xdr_inline_decode(argp->xdr, len); | |
245 | if (!p) | |
246 | return nfserr_bad_xdr; | |
247 | o->data = svcxdr_tmpalloc(argp, len); | |
248 | if (!o->data) | |
249 | return nfserr_jukebox; | |
250 | o->len = len; | |
251 | memcpy(o->data, p, len); | |
252 | ||
253 | return nfs_ok; | |
254 | } | |
255 | ||
000dfa18 CL |
256 | static __be32 |
257 | nfsd4_decode_component4(struct nfsd4_compoundargs *argp, char **namp, u32 *lenp) | |
258 | { | |
259 | __be32 *p, status; | |
260 | ||
261 | if (xdr_stream_decode_u32(argp->xdr, lenp) < 0) | |
262 | return nfserr_bad_xdr; | |
263 | p = xdr_inline_decode(argp->xdr, *lenp); | |
264 | if (!p) | |
265 | return nfserr_bad_xdr; | |
266 | status = check_filename((char *)p, *lenp); | |
267 | if (status) | |
268 | return status; | |
269 | *namp = svcxdr_tmpalloc(argp, *lenp); | |
270 | if (!*namp) | |
271 | return nfserr_jukebox; | |
272 | memcpy(*namp, p, *lenp); | |
273 | ||
274 | return nfs_ok; | |
275 | } | |
276 | ||
1c3eff7e CL |
277 | static __be32 |
278 | nfsd4_decode_nfstime4(struct nfsd4_compoundargs *argp, struct timespec64 *tv) | |
279 | { | |
280 | __be32 *p; | |
281 | ||
282 | p = xdr_inline_decode(argp->xdr, XDR_UNIT * 3); | |
283 | if (!p) | |
284 | return nfserr_bad_xdr; | |
285 | p = xdr_decode_hyper(p, &tv->tv_sec); | |
286 | tv->tv_nsec = be32_to_cpup(p++); | |
287 | if (tv->tv_nsec >= (u32)1000000000) | |
288 | return nfserr_inval; | |
289 | return nfs_ok; | |
290 | } | |
291 | ||
796dd1c6 CL |
292 | static __be32 |
293 | nfsd4_decode_verifier4(struct nfsd4_compoundargs *argp, nfs4_verifier *verf) | |
294 | { | |
295 | __be32 *p; | |
296 | ||
297 | p = xdr_inline_decode(argp->xdr, NFS4_VERIFIER_SIZE); | |
298 | if (!p) | |
299 | return nfserr_bad_xdr; | |
300 | memcpy(verf->data, p, sizeof(verf->data)); | |
301 | return nfs_ok; | |
302 | } | |
303 | ||
d1c263a0 CL |
304 | /** |
305 | * nfsd4_decode_bitmap4 - Decode an NFSv4 bitmap4 | |
306 | * @argp: NFSv4 compound argument structure | |
307 | * @bmval: pointer to an array of u32's to decode into | |
308 | * @bmlen: size of the @bmval array | |
309 | * | |
310 | * The server needs to return nfs_ok rather than nfserr_bad_xdr when | |
311 | * encountering bitmaps containing bits it does not recognize. This | |
312 | * includes bits in bitmap words past WORDn, where WORDn is the last | |
313 | * bitmap WORD the implementation currently supports. Thus we are | |
314 | * careful here to simply ignore bits in bitmap words that this | |
315 | * implementation has yet to support explicitly. | |
316 | * | |
317 | * Return values: | |
318 | * %nfs_ok: @bmval populated successfully | |
319 | * %nfserr_bad_xdr: the encoded bitmap was invalid | |
320 | */ | |
321 | static __be32 | |
322 | nfsd4_decode_bitmap4(struct nfsd4_compoundargs *argp, u32 *bmval, u32 bmlen) | |
323 | { | |
324 | u32 i, count; | |
325 | __be32 *p; | |
326 | ||
327 | if (xdr_stream_decode_u32(argp->xdr, &count) < 0) | |
328 | return nfserr_bad_xdr; | |
329 | /* request sanity */ | |
330 | if (count > 1000) | |
331 | return nfserr_bad_xdr; | |
332 | p = xdr_inline_decode(argp->xdr, count << 2); | |
333 | if (!p) | |
334 | return nfserr_bad_xdr; | |
335 | i = 0; | |
336 | while (i < count) | |
337 | bmval[i++] = be32_to_cpup(p++); | |
338 | while (i < bmlen) | |
339 | bmval[i++] = 0; | |
340 | ||
341 | return nfs_ok; | |
342 | } | |
343 | ||
c941a968 CL |
344 | static __be32 |
345 | nfsd4_decode_nfsace4(struct nfsd4_compoundargs *argp, struct nfs4_ace *ace) | |
346 | { | |
347 | __be32 *p, status; | |
348 | u32 length; | |
349 | ||
350 | if (xdr_stream_decode_u32(argp->xdr, &ace->type) < 0) | |
351 | return nfserr_bad_xdr; | |
352 | if (xdr_stream_decode_u32(argp->xdr, &ace->flag) < 0) | |
353 | return nfserr_bad_xdr; | |
354 | if (xdr_stream_decode_u32(argp->xdr, &ace->access_mask) < 0) | |
355 | return nfserr_bad_xdr; | |
356 | ||
357 | if (xdr_stream_decode_u32(argp->xdr, &length) < 0) | |
358 | return nfserr_bad_xdr; | |
359 | p = xdr_inline_decode(argp->xdr, length); | |
360 | if (!p) | |
361 | return nfserr_bad_xdr; | |
362 | ace->whotype = nfs4_acl_get_whotype((char *)p, length); | |
363 | if (ace->whotype != NFS4_ACL_WHO_NAMED) | |
364 | status = nfs_ok; | |
365 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) | |
366 | status = nfsd_map_name_to_gid(argp->rqstp, | |
367 | (char *)p, length, &ace->who_gid); | |
368 | else | |
369 | status = nfsd_map_name_to_uid(argp->rqstp, | |
370 | (char *)p, length, &ace->who_uid); | |
371 | ||
372 | return status; | |
373 | } | |
374 | ||
375 | /* A counted array of nfsace4's */ | |
376 | static noinline __be32 | |
377 | nfsd4_decode_acl(struct nfsd4_compoundargs *argp, struct nfs4_acl **acl) | |
378 | { | |
379 | struct nfs4_ace *ace; | |
380 | __be32 status; | |
381 | u32 count; | |
382 | ||
383 | if (xdr_stream_decode_u32(argp->xdr, &count) < 0) | |
384 | return nfserr_bad_xdr; | |
385 | ||
386 | if (count > xdr_stream_remaining(argp->xdr) / 20) | |
387 | /* | |
388 | * Even with 4-byte names there wouldn't be | |
389 | * space for that many aces; something fishy is | |
390 | * going on: | |
391 | */ | |
392 | return nfserr_fbig; | |
393 | ||
394 | *acl = svcxdr_tmpalloc(argp, nfs4_acl_bytes(count)); | |
395 | if (*acl == NULL) | |
396 | return nfserr_jukebox; | |
397 | ||
398 | (*acl)->naces = count; | |
399 | for (ace = (*acl)->aces; ace < (*acl)->aces + count; ace++) { | |
400 | status = nfsd4_decode_nfsace4(argp, ace); | |
401 | if (status) | |
402 | return status; | |
403 | } | |
404 | ||
405 | return nfs_ok; | |
406 | } | |
407 | ||
dabe9182 CL |
408 | static noinline __be32 |
409 | nfsd4_decode_security_label(struct nfsd4_compoundargs *argp, | |
410 | struct xdr_netobj *label) | |
411 | { | |
412 | u32 lfs, pi, length; | |
413 | __be32 *p; | |
414 | ||
415 | if (xdr_stream_decode_u32(argp->xdr, &lfs) < 0) | |
416 | return nfserr_bad_xdr; | |
417 | if (xdr_stream_decode_u32(argp->xdr, &pi) < 0) | |
418 | return nfserr_bad_xdr; | |
419 | ||
420 | if (xdr_stream_decode_u32(argp->xdr, &length) < 0) | |
421 | return nfserr_bad_xdr; | |
422 | if (length > NFS4_MAXLABELLEN) | |
423 | return nfserr_badlabel; | |
424 | p = xdr_inline_decode(argp->xdr, length); | |
425 | if (!p) | |
426 | return nfserr_bad_xdr; | |
427 | label->len = length; | |
428 | label->data = svcxdr_dupstr(argp, p, length); | |
429 | if (!label->data) | |
430 | return nfserr_jukebox; | |
431 | ||
432 | return nfs_ok; | |
433 | } | |
434 | ||
b37ad28b | 435 | static __be32 |
d1c263a0 CL |
436 | nfsd4_decode_fattr4(struct nfsd4_compoundargs *argp, u32 *bmval, u32 bmlen, |
437 | struct iattr *iattr, struct nfs4_acl **acl, | |
438 | struct xdr_netobj *label, int *umask) | |
1da177e4 | 439 | { |
081d53fe CL |
440 | unsigned int starting_pos; |
441 | u32 attrlist4_count; | |
d1c263a0 | 442 | __be32 *p, status; |
1da177e4 | 443 | |
1da177e4 | 444 | iattr->ia_valid = 0; |
d1c263a0 CL |
445 | status = nfsd4_decode_bitmap4(argp, bmval, bmlen); |
446 | if (status) | |
447 | return nfserr_bad_xdr; | |
1da177e4 | 448 | |
e864c189 BF |
449 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
450 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 | |
451 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) { | |
452 | if (nfsd_attrs_supported(argp->minorversion, bmval)) | |
453 | return nfserr_inval; | |
454 | return nfserr_attrnotsupp; | |
455 | } | |
456 | ||
081d53fe CL |
457 | if (xdr_stream_decode_u32(argp->xdr, &attrlist4_count) < 0) |
458 | return nfserr_bad_xdr; | |
459 | starting_pos = xdr_stream_pos(argp->xdr); | |
1da177e4 LT |
460 | |
461 | if (bmval[0] & FATTR4_WORD0_SIZE) { | |
2ac1b9b2 CL |
462 | u64 size; |
463 | ||
464 | if (xdr_stream_decode_u64(argp->xdr, &size) < 0) | |
465 | return nfserr_bad_xdr; | |
466 | iattr->ia_size = size; | |
1da177e4 LT |
467 | iattr->ia_valid |= ATTR_SIZE; |
468 | } | |
469 | if (bmval[0] & FATTR4_WORD0_ACL) { | |
c941a968 CL |
470 | status = nfsd4_decode_acl(argp, acl); |
471 | if (status) | |
472 | return status; | |
1da177e4 LT |
473 | } else |
474 | *acl = NULL; | |
475 | if (bmval[1] & FATTR4_WORD1_MODE) { | |
1c8f0ad7 CL |
476 | u32 mode; |
477 | ||
478 | if (xdr_stream_decode_u32(argp->xdr, &mode) < 0) | |
479 | return nfserr_bad_xdr; | |
480 | iattr->ia_mode = mode; | |
1da177e4 LT |
481 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); |
482 | iattr->ia_valid |= ATTR_MODE; | |
483 | } | |
484 | if (bmval[1] & FATTR4_WORD1_OWNER) { | |
9853a5ac CL |
485 | u32 length; |
486 | ||
487 | if (xdr_stream_decode_u32(argp->xdr, &length) < 0) | |
488 | return nfserr_bad_xdr; | |
489 | p = xdr_inline_decode(argp->xdr, length); | |
490 | if (!p) | |
491 | return nfserr_bad_xdr; | |
492 | status = nfsd_map_name_to_uid(argp->rqstp, (char *)p, length, | |
493 | &iattr->ia_uid); | |
494 | if (status) | |
47c85291 | 495 | return status; |
1da177e4 LT |
496 | iattr->ia_valid |= ATTR_UID; |
497 | } | |
498 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { | |
393c31dd CL |
499 | u32 length; |
500 | ||
501 | if (xdr_stream_decode_u32(argp->xdr, &length) < 0) | |
502 | return nfserr_bad_xdr; | |
503 | p = xdr_inline_decode(argp->xdr, length); | |
504 | if (!p) | |
505 | return nfserr_bad_xdr; | |
506 | status = nfsd_map_name_to_gid(argp->rqstp, (char *)p, length, | |
507 | &iattr->ia_gid); | |
508 | if (status) | |
47c85291 | 509 | return status; |
1da177e4 LT |
510 | iattr->ia_valid |= ATTR_GID; |
511 | } | |
512 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { | |
1c3eff7e CL |
513 | u32 set_it; |
514 | ||
515 | if (xdr_stream_decode_u32(argp->xdr, &set_it) < 0) | |
516 | return nfserr_bad_xdr; | |
517 | switch (set_it) { | |
1da177e4 | 518 | case NFS4_SET_TO_CLIENT_TIME: |
1c3eff7e | 519 | status = nfsd4_decode_nfstime4(argp, &iattr->ia_atime); |
4c94e13e CH |
520 | if (status) |
521 | return status; | |
1da177e4 LT |
522 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); |
523 | break; | |
524 | case NFS4_SET_TO_SERVER_TIME: | |
525 | iattr->ia_valid |= ATTR_ATIME; | |
526 | break; | |
527 | default: | |
1c3eff7e | 528 | return nfserr_bad_xdr; |
1da177e4 LT |
529 | } |
530 | } | |
1da177e4 | 531 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
1c3eff7e CL |
532 | u32 set_it; |
533 | ||
534 | if (xdr_stream_decode_u32(argp->xdr, &set_it) < 0) | |
535 | return nfserr_bad_xdr; | |
536 | switch (set_it) { | |
1da177e4 | 537 | case NFS4_SET_TO_CLIENT_TIME: |
1c3eff7e | 538 | status = nfsd4_decode_nfstime4(argp, &iattr->ia_mtime); |
4c94e13e CH |
539 | if (status) |
540 | return status; | |
1da177e4 LT |
541 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); |
542 | break; | |
543 | case NFS4_SET_TO_SERVER_TIME: | |
544 | iattr->ia_valid |= ATTR_MTIME; | |
545 | break; | |
546 | default: | |
1c3eff7e | 547 | return nfserr_bad_xdr; |
1da177e4 LT |
548 | } |
549 | } | |
18032ca0 | 550 | label->len = 0; |
2285ae76 AB |
551 | if (IS_ENABLED(CONFIG_NFSD_V4_SECURITY_LABEL) && |
552 | bmval[2] & FATTR4_WORD2_SECURITY_LABEL) { | |
dabe9182 CL |
553 | status = nfsd4_decode_security_label(argp, label); |
554 | if (status) | |
555 | return status; | |
18032ca0 | 556 | } |
47057abd | 557 | if (bmval[2] & FATTR4_WORD2_MODE_UMASK) { |
66f0476c CL |
558 | u32 mode, mask; |
559 | ||
47057abd | 560 | if (!umask) |
66f0476c CL |
561 | return nfserr_bad_xdr; |
562 | if (xdr_stream_decode_u32(argp->xdr, &mode) < 0) | |
563 | return nfserr_bad_xdr; | |
564 | iattr->ia_mode = mode & (S_IFMT | S_IALLUGO); | |
565 | if (xdr_stream_decode_u32(argp->xdr, &mask) < 0) | |
566 | return nfserr_bad_xdr; | |
567 | *umask = mask & S_IRWXUGO; | |
47057abd AG |
568 | iattr->ia_valid |= ATTR_MODE; |
569 | } | |
081d53fe CL |
570 | |
571 | /* request sanity: did attrlist4 contain the expected number of words? */ | |
572 | if (attrlist4_count != xdr_stream_pos(argp->xdr) - starting_pos) | |
573 | return nfserr_bad_xdr; | |
1da177e4 | 574 | |
d1c263a0 | 575 | return nfs_ok; |
1da177e4 LT |
576 | } |
577 | ||
e31a1b66 BH |
578 | static __be32 |
579 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
580 | { | |
581 | DECODE_HEAD; | |
582 | ||
583 | READ_BUF(sizeof(stateid_t)); | |
06553991 | 584 | sid->si_generation = be32_to_cpup(p++); |
e31a1b66 BH |
585 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); |
586 | ||
587 | DECODE_TAIL; | |
588 | } | |
589 | ||
d3d2f381 CL |
590 | static __be32 |
591 | nfsd4_decode_stateid4(struct nfsd4_compoundargs *argp, stateid_t *sid) | |
592 | { | |
593 | __be32 *p; | |
594 | ||
595 | p = xdr_inline_decode(argp->xdr, NFS4_STATEID_SIZE); | |
596 | if (!p) | |
597 | return nfserr_bad_xdr; | |
598 | sid->si_generation = be32_to_cpup(p++); | |
599 | memcpy(&sid->si_opaque, p, sizeof(sid->si_opaque)); | |
600 | return nfs_ok; | |
601 | } | |
602 | ||
144e8269 CL |
603 | static __be32 |
604 | nfsd4_decode_clientid4(struct nfsd4_compoundargs *argp, clientid_t *clientid) | |
605 | { | |
606 | __be32 *p; | |
607 | ||
608 | p = xdr_inline_decode(argp->xdr, sizeof(__be64)); | |
609 | if (!p) | |
610 | return nfserr_bad_xdr; | |
611 | memcpy(clientid, p, sizeof(*clientid)); | |
612 | return nfs_ok; | |
613 | } | |
614 | ||
615 | static __be32 | |
616 | nfsd4_decode_state_owner4(struct nfsd4_compoundargs *argp, | |
617 | clientid_t *clientid, struct xdr_netobj *owner) | |
618 | { | |
619 | __be32 status; | |
620 | ||
621 | status = nfsd4_decode_clientid4(argp, clientid); | |
622 | if (status) | |
623 | return status; | |
624 | return nfsd4_decode_opaque(argp, owner); | |
625 | } | |
626 | ||
04495971 CL |
627 | #ifdef CONFIG_NFSD_PNFS |
628 | static __be32 | |
629 | nfsd4_decode_deviceid4(struct nfsd4_compoundargs *argp, | |
630 | struct nfsd4_deviceid *devid) | |
631 | { | |
632 | __be32 *p; | |
633 | ||
634 | p = xdr_inline_decode(argp->xdr, NFS4_DEVICEID4_SIZE); | |
635 | if (!p) | |
636 | return nfserr_bad_xdr; | |
637 | memcpy(devid, p, sizeof(*devid)); | |
638 | return nfs_ok; | |
639 | } | |
5185980d CL |
640 | |
641 | static __be32 | |
642 | nfsd4_decode_layoutupdate4(struct nfsd4_compoundargs *argp, | |
643 | struct nfsd4_layoutcommit *lcp) | |
644 | { | |
645 | if (xdr_stream_decode_u32(argp->xdr, &lcp->lc_layout_type) < 0) | |
646 | return nfserr_bad_xdr; | |
647 | if (lcp->lc_layout_type < LAYOUT_NFSV4_1_FILES) | |
648 | return nfserr_bad_xdr; | |
649 | if (lcp->lc_layout_type >= LAYOUT_TYPE_MAX) | |
650 | return nfserr_bad_xdr; | |
651 | ||
652 | if (xdr_stream_decode_u32(argp->xdr, &lcp->lc_up_len) < 0) | |
653 | return nfserr_bad_xdr; | |
654 | if (lcp->lc_up_len > 0) { | |
655 | lcp->lc_up_layout = xdr_inline_decode(argp->xdr, lcp->lc_up_len); | |
656 | if (!lcp->lc_up_layout) | |
657 | return nfserr_bad_xdr; | |
658 | } | |
659 | ||
660 | return nfs_ok; | |
661 | } | |
662 | ||
645fcad3 CL |
663 | static __be32 |
664 | nfsd4_decode_layoutreturn4(struct nfsd4_compoundargs *argp, | |
665 | struct nfsd4_layoutreturn *lrp) | |
666 | { | |
667 | __be32 status; | |
668 | ||
669 | if (xdr_stream_decode_u32(argp->xdr, &lrp->lr_return_type) < 0) | |
670 | return nfserr_bad_xdr; | |
671 | switch (lrp->lr_return_type) { | |
672 | case RETURN_FILE: | |
673 | if (xdr_stream_decode_u64(argp->xdr, &lrp->lr_seg.offset) < 0) | |
674 | return nfserr_bad_xdr; | |
675 | if (xdr_stream_decode_u64(argp->xdr, &lrp->lr_seg.length) < 0) | |
676 | return nfserr_bad_xdr; | |
677 | status = nfsd4_decode_stateid4(argp, &lrp->lr_sid); | |
678 | if (status) | |
679 | return status; | |
680 | if (xdr_stream_decode_u32(argp->xdr, &lrp->lrf_body_len) < 0) | |
681 | return nfserr_bad_xdr; | |
682 | if (lrp->lrf_body_len > 0) { | |
683 | lrp->lrf_body = xdr_inline_decode(argp->xdr, lrp->lrf_body_len); | |
684 | if (!lrp->lrf_body) | |
685 | return nfserr_bad_xdr; | |
686 | } | |
687 | break; | |
688 | case RETURN_FSID: | |
689 | case RETURN_ALL: | |
690 | lrp->lr_seg.offset = 0; | |
691 | lrp->lr_seg.length = NFS4_MAX_UINT64; | |
692 | break; | |
693 | default: | |
694 | return nfserr_bad_xdr; | |
695 | } | |
696 | ||
697 | return nfs_ok; | |
698 | } | |
699 | ||
04495971 CL |
700 | #endif /* CONFIG_NFSD_PNFS */ |
701 | ||
571e0451 CL |
702 | static __be32 |
703 | nfsd4_decode_sessionid4(struct nfsd4_compoundargs *argp, | |
704 | struct nfs4_sessionid *sessionid) | |
705 | { | |
706 | __be32 *p; | |
707 | ||
708 | p = xdr_inline_decode(argp->xdr, NFS4_MAX_SESSIONID_LEN); | |
709 | if (!p) | |
710 | return nfserr_bad_xdr; | |
711 | memcpy(sessionid->data, p, sizeof(sessionid->data)); | |
712 | return nfs_ok; | |
713 | } | |
714 | ||
1a994408 CL |
715 | /* Defined in Appendix A of RFC 5531 */ |
716 | static __be32 | |
717 | nfsd4_decode_authsys_parms(struct nfsd4_compoundargs *argp, | |
718 | struct nfsd4_cb_sec *cbs) | |
acb2887e | 719 | { |
1a994408 CL |
720 | u32 stamp, gidcount, uid, gid; |
721 | __be32 *p, status; | |
722 | ||
723 | if (xdr_stream_decode_u32(argp->xdr, &stamp) < 0) | |
724 | return nfserr_bad_xdr; | |
725 | /* machine name */ | |
726 | status = nfsd4_decode_ignored_string(argp, 255); | |
727 | if (status) | |
728 | return status; | |
729 | if (xdr_stream_decode_u32(argp->xdr, &uid) < 0) | |
730 | return nfserr_bad_xdr; | |
731 | if (xdr_stream_decode_u32(argp->xdr, &gid) < 0) | |
732 | return nfserr_bad_xdr; | |
733 | if (xdr_stream_decode_u32(argp->xdr, &gidcount) < 0) | |
734 | return nfserr_bad_xdr; | |
735 | if (gidcount > 16) | |
736 | return nfserr_bad_xdr; | |
737 | p = xdr_inline_decode(argp->xdr, gidcount << 2); | |
738 | if (!p) | |
739 | return nfserr_bad_xdr; | |
740 | if (cbs->flavor == (u32)(-1)) { | |
741 | struct user_namespace *userns = nfsd_user_namespace(argp->rqstp); | |
742 | ||
743 | kuid_t kuid = make_kuid(userns, uid); | |
744 | kgid_t kgid = make_kgid(userns, gid); | |
745 | if (uid_valid(kuid) && gid_valid(kgid)) { | |
746 | cbs->uid = kuid; | |
747 | cbs->gid = kgid; | |
748 | cbs->flavor = RPC_AUTH_UNIX; | |
749 | } else { | |
750 | dprintk("RPC_AUTH_UNIX with invalid uid or gid, ignoring!\n"); | |
751 | } | |
752 | } | |
753 | ||
754 | return nfs_ok; | |
755 | } | |
756 | ||
757 | static __be32 | |
758 | nfsd4_decode_gss_cb_handles4(struct nfsd4_compoundargs *argp, | |
759 | struct nfsd4_cb_sec *cbs) | |
760 | { | |
761 | __be32 status; | |
762 | u32 service; | |
763 | ||
764 | dprintk("RPC_AUTH_GSS callback secflavor not supported!\n"); | |
765 | ||
766 | if (xdr_stream_decode_u32(argp->xdr, &service) < 0) | |
767 | return nfserr_bad_xdr; | |
768 | if (service < RPC_GSS_SVC_NONE || service > RPC_GSS_SVC_PRIVACY) | |
769 | return nfserr_bad_xdr; | |
770 | /* gcbp_handle_from_server */ | |
771 | status = nfsd4_decode_ignored_string(argp, 0); | |
772 | if (status) | |
773 | return status; | |
774 | /* gcbp_handle_from_client */ | |
775 | status = nfsd4_decode_ignored_string(argp, 0); | |
776 | if (status) | |
777 | return status; | |
778 | ||
779 | return nfs_ok; | |
780 | } | |
781 | ||
782 | /* a counted array of callback_sec_parms4 items */ | |
783 | static __be32 | |
784 | nfsd4_decode_cb_sec(struct nfsd4_compoundargs *argp, struct nfsd4_cb_sec *cbs) | |
785 | { | |
786 | u32 i, secflavor, nr_secflavs; | |
787 | __be32 status; | |
acb2887e BF |
788 | |
789 | /* callback_sec_params4 */ | |
1a994408 CL |
790 | if (xdr_stream_decode_u32(argp->xdr, &nr_secflavs) < 0) |
791 | return nfserr_bad_xdr; | |
57569a70 BF |
792 | if (nr_secflavs) |
793 | cbs->flavor = (u32)(-1); | |
794 | else | |
795 | /* Is this legal? Be generous, take it to mean AUTH_NONE: */ | |
796 | cbs->flavor = 0; | |
1a994408 | 797 | |
acb2887e | 798 | for (i = 0; i < nr_secflavs; ++i) { |
1a994408 CL |
799 | if (xdr_stream_decode_u32(argp->xdr, &secflavor) < 0) |
800 | return nfserr_bad_xdr; | |
801 | switch (secflavor) { | |
acb2887e | 802 | case RPC_AUTH_NULL: |
1a994408 | 803 | /* void */ |
12fc3e92 BF |
804 | if (cbs->flavor == (u32)(-1)) |
805 | cbs->flavor = RPC_AUTH_NULL; | |
acb2887e BF |
806 | break; |
807 | case RPC_AUTH_UNIX: | |
1a994408 CL |
808 | status = nfsd4_decode_authsys_parms(argp, cbs); |
809 | if (status) | |
810 | return status; | |
acb2887e BF |
811 | break; |
812 | case RPC_AUTH_GSS: | |
1a994408 CL |
813 | status = nfsd4_decode_gss_cb_handles4(argp, cbs); |
814 | if (status) | |
815 | return status; | |
acb2887e BF |
816 | break; |
817 | default: | |
acb2887e BF |
818 | return nfserr_inval; |
819 | } | |
820 | } | |
1a994408 CL |
821 | |
822 | return nfs_ok; | |
acb2887e BF |
823 | } |
824 | ||
1a994408 | 825 | |
d169a6a9 CL |
826 | /* |
827 | * NFSv4 operation argument decoders | |
828 | */ | |
829 | ||
830 | static __be32 | |
831 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, | |
832 | struct nfsd4_access *access) | |
833 | { | |
834 | if (xdr_stream_decode_u32(argp->xdr, &access->ac_req_access) < 0) | |
835 | return nfserr_bad_xdr; | |
836 | return nfs_ok; | |
837 | } | |
838 | ||
b37ad28b | 839 | static __be32 |
1da177e4 LT |
840 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
841 | { | |
d3d2f381 CL |
842 | if (xdr_stream_decode_u32(argp->xdr, &close->cl_seqid) < 0) |
843 | return nfserr_bad_xdr; | |
844 | return nfsd4_decode_stateid4(argp, &close->cl_stateid); | |
1da177e4 LT |
845 | } |
846 | ||
847 | ||
b37ad28b | 848 | static __be32 |
1da177e4 LT |
849 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
850 | { | |
cbd9abb3 CL |
851 | if (xdr_stream_decode_u64(argp->xdr, &commit->co_offset) < 0) |
852 | return nfserr_bad_xdr; | |
853 | if (xdr_stream_decode_u32(argp->xdr, &commit->co_count) < 0) | |
854 | return nfserr_bad_xdr; | |
855 | return nfs_ok; | |
1da177e4 LT |
856 | } |
857 | ||
b37ad28b | 858 | static __be32 |
1da177e4 LT |
859 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
860 | { | |
000dfa18 | 861 | __be32 *p, status; |
1da177e4 | 862 | |
000dfa18 CL |
863 | if (xdr_stream_decode_u32(argp->xdr, &create->cr_type) < 0) |
864 | return nfserr_bad_xdr; | |
1da177e4 LT |
865 | switch (create->cr_type) { |
866 | case NF4LNK: | |
000dfa18 CL |
867 | if (xdr_stream_decode_u32(argp->xdr, &create->cr_datalen) < 0) |
868 | return nfserr_bad_xdr; | |
869 | p = xdr_inline_decode(argp->xdr, create->cr_datalen); | |
870 | if (!p) | |
871 | return nfserr_bad_xdr; | |
29c353b3 | 872 | create->cr_data = svcxdr_dupstr(argp, p, create->cr_datalen); |
7fb84306 | 873 | if (!create->cr_data) |
76f47128 | 874 | return nfserr_jukebox; |
1da177e4 LT |
875 | break; |
876 | case NF4BLK: | |
877 | case NF4CHR: | |
000dfa18 CL |
878 | if (xdr_stream_decode_u32(argp->xdr, &create->cr_specdata1) < 0) |
879 | return nfserr_bad_xdr; | |
880 | if (xdr_stream_decode_u32(argp->xdr, &create->cr_specdata2) < 0) | |
881 | return nfserr_bad_xdr; | |
1da177e4 LT |
882 | break; |
883 | case NF4SOCK: | |
884 | case NF4FIFO: | |
885 | case NF4DIR: | |
886 | default: | |
887 | break; | |
888 | } | |
000dfa18 CL |
889 | status = nfsd4_decode_component4(argp, &create->cr_name, |
890 | &create->cr_namelen); | |
891 | if (status) | |
1da177e4 | 892 | return status; |
d1c263a0 CL |
893 | status = nfsd4_decode_fattr4(argp, create->cr_bmval, |
894 | ARRAY_SIZE(create->cr_bmval), | |
895 | &create->cr_iattr, &create->cr_acl, | |
896 | &create->cr_label, &create->cr_umask); | |
c0d6fc8a | 897 | if (status) |
000dfa18 | 898 | return status; |
1da177e4 | 899 | |
000dfa18 | 900 | return nfs_ok; |
1da177e4 LT |
901 | } |
902 | ||
b37ad28b | 903 | static inline __be32 |
1da177e4 LT |
904 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
905 | { | |
95e6482c | 906 | return nfsd4_decode_stateid4(argp, &dr->dr_stateid); |
1da177e4 LT |
907 | } |
908 | ||
b37ad28b | 909 | static inline __be32 |
1da177e4 LT |
910 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
911 | { | |
f759eff2 CL |
912 | return nfsd4_decode_bitmap4(argp, getattr->ga_bmval, |
913 | ARRAY_SIZE(getattr->ga_bmval)); | |
1da177e4 LT |
914 | } |
915 | ||
b37ad28b | 916 | static __be32 |
1da177e4 LT |
917 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
918 | { | |
5c505d12 | 919 | return nfsd4_decode_component4(argp, &link->li_name, &link->li_namelen); |
1da177e4 LT |
920 | } |
921 | ||
8918cc0d CL |
922 | static __be32 |
923 | nfsd4_decode_open_to_lock_owner4(struct nfsd4_compoundargs *argp, | |
924 | struct nfsd4_lock *lock) | |
925 | { | |
926 | __be32 status; | |
927 | ||
928 | if (xdr_stream_decode_u32(argp->xdr, &lock->lk_new_open_seqid) < 0) | |
929 | return nfserr_bad_xdr; | |
930 | status = nfsd4_decode_stateid4(argp, &lock->lk_new_open_stateid); | |
931 | if (status) | |
932 | return status; | |
933 | if (xdr_stream_decode_u32(argp->xdr, &lock->lk_new_lock_seqid) < 0) | |
934 | return nfserr_bad_xdr; | |
935 | return nfsd4_decode_state_owner4(argp, &lock->lk_new_clientid, | |
936 | &lock->lk_new_owner); | |
937 | } | |
938 | ||
939 | static __be32 | |
940 | nfsd4_decode_exist_lock_owner4(struct nfsd4_compoundargs *argp, | |
941 | struct nfsd4_lock *lock) | |
942 | { | |
943 | __be32 status; | |
944 | ||
945 | status = nfsd4_decode_stateid4(argp, &lock->lk_old_lock_stateid); | |
946 | if (status) | |
947 | return status; | |
948 | if (xdr_stream_decode_u32(argp->xdr, &lock->lk_old_lock_seqid) < 0) | |
949 | return nfserr_bad_xdr; | |
950 | ||
951 | return nfs_ok; | |
952 | } | |
953 | ||
954 | static __be32 | |
955 | nfsd4_decode_locker4(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) | |
956 | { | |
957 | if (xdr_stream_decode_bool(argp->xdr, &lock->lk_is_new) < 0) | |
958 | return nfserr_bad_xdr; | |
959 | if (lock->lk_is_new) | |
960 | return nfsd4_decode_open_to_lock_owner4(argp, lock); | |
961 | return nfsd4_decode_exist_lock_owner4(argp, lock); | |
962 | } | |
963 | ||
b37ad28b | 964 | static __be32 |
1da177e4 LT |
965 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
966 | { | |
7c59deed CL |
967 | if (xdr_stream_decode_u32(argp->xdr, &lock->lk_type) < 0) |
968 | return nfserr_bad_xdr; | |
1da177e4 | 969 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) |
7c59deed CL |
970 | return nfserr_bad_xdr; |
971 | if (xdr_stream_decode_bool(argp->xdr, &lock->lk_reclaim) < 0) | |
972 | return nfserr_bad_xdr; | |
973 | if (xdr_stream_decode_u64(argp->xdr, &lock->lk_offset) < 0) | |
974 | return nfserr_bad_xdr; | |
975 | if (xdr_stream_decode_u64(argp->xdr, &lock->lk_length) < 0) | |
976 | return nfserr_bad_xdr; | |
977 | return nfsd4_decode_locker4(argp, lock); | |
1da177e4 LT |
978 | } |
979 | ||
b37ad28b | 980 | static __be32 |
1da177e4 LT |
981 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
982 | { | |
0a146f04 CL |
983 | if (xdr_stream_decode_u32(argp->xdr, &lockt->lt_type) < 0) |
984 | return nfserr_bad_xdr; | |
985 | if ((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) | |
986 | return nfserr_bad_xdr; | |
987 | if (xdr_stream_decode_u64(argp->xdr, &lockt->lt_offset) < 0) | |
988 | return nfserr_bad_xdr; | |
989 | if (xdr_stream_decode_u64(argp->xdr, &lockt->lt_length) < 0) | |
990 | return nfserr_bad_xdr; | |
991 | return nfsd4_decode_state_owner4(argp, &lockt->lt_clientid, | |
992 | &lockt->lt_owner); | |
1da177e4 LT |
993 | } |
994 | ||
b37ad28b | 995 | static __be32 |
1da177e4 LT |
996 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
997 | { | |
ca9cf9fc | 998 | __be32 status; |
1da177e4 | 999 | |
ca9cf9fc CL |
1000 | if (xdr_stream_decode_u32(argp->xdr, &locku->lu_type) < 0) |
1001 | return nfserr_bad_xdr; | |
1da177e4 | 1002 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) |
ca9cf9fc CL |
1003 | return nfserr_bad_xdr; |
1004 | if (xdr_stream_decode_u32(argp->xdr, &locku->lu_seqid) < 0) | |
1005 | return nfserr_bad_xdr; | |
1006 | status = nfsd4_decode_stateid4(argp, &locku->lu_stateid); | |
e31a1b66 BH |
1007 | if (status) |
1008 | return status; | |
ca9cf9fc CL |
1009 | if (xdr_stream_decode_u64(argp->xdr, &locku->lu_offset) < 0) |
1010 | return nfserr_bad_xdr; | |
1011 | if (xdr_stream_decode_u64(argp->xdr, &locku->lu_length) < 0) | |
1012 | return nfserr_bad_xdr; | |
1da177e4 | 1013 | |
ca9cf9fc | 1014 | return nfs_ok; |
1da177e4 LT |
1015 | } |
1016 | ||
b37ad28b | 1017 | static __be32 |
1da177e4 LT |
1018 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
1019 | { | |
3d5877e8 | 1020 | return nfsd4_decode_component4(argp, &lookup->lo_name, &lookup->lo_len); |
1da177e4 LT |
1021 | } |
1022 | ||
bf33bab3 CL |
1023 | static __be32 |
1024 | nfsd4_decode_createhow4(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) | |
1025 | { | |
1026 | __be32 status; | |
1027 | ||
1028 | if (xdr_stream_decode_u32(argp->xdr, &open->op_createmode) < 0) | |
1029 | return nfserr_bad_xdr; | |
1030 | switch (open->op_createmode) { | |
1031 | case NFS4_CREATE_UNCHECKED: | |
1032 | case NFS4_CREATE_GUARDED: | |
1033 | status = nfsd4_decode_fattr4(argp, open->op_bmval, | |
1034 | ARRAY_SIZE(open->op_bmval), | |
1035 | &open->op_iattr, &open->op_acl, | |
1036 | &open->op_label, &open->op_umask); | |
1037 | if (status) | |
1038 | return status; | |
1039 | break; | |
1040 | case NFS4_CREATE_EXCLUSIVE: | |
1041 | status = nfsd4_decode_verifier4(argp, &open->op_verf); | |
1042 | if (status) | |
1043 | return status; | |
1044 | break; | |
1045 | case NFS4_CREATE_EXCLUSIVE4_1: | |
1046 | if (argp->minorversion < 1) | |
1047 | return nfserr_bad_xdr; | |
1048 | status = nfsd4_decode_verifier4(argp, &open->op_verf); | |
1049 | if (status) | |
1050 | return status; | |
1051 | status = nfsd4_decode_fattr4(argp, open->op_bmval, | |
1052 | ARRAY_SIZE(open->op_bmval), | |
1053 | &open->op_iattr, &open->op_acl, | |
1054 | &open->op_label, &open->op_umask); | |
1055 | if (status) | |
1056 | return status; | |
1057 | break; | |
1058 | default: | |
1059 | return nfserr_bad_xdr; | |
1060 | } | |
1061 | ||
1062 | return nfs_ok; | |
1063 | } | |
1064 | ||
e6ec04b2 CL |
1065 | static __be32 |
1066 | nfsd4_decode_openflag4(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) | |
1067 | { | |
1068 | __be32 status; | |
1069 | ||
1070 | if (xdr_stream_decode_u32(argp->xdr, &open->op_create) < 0) | |
1071 | return nfserr_bad_xdr; | |
1072 | switch (open->op_create) { | |
1073 | case NFS4_OPEN_NOCREATE: | |
1074 | break; | |
1075 | case NFS4_OPEN_CREATE: | |
1076 | status = nfsd4_decode_createhow4(argp, open); | |
1077 | if (status) | |
1078 | return status; | |
1079 | break; | |
1080 | default: | |
1081 | return nfserr_bad_xdr; | |
1082 | } | |
1083 | ||
1084 | return nfs_ok; | |
1085 | } | |
1086 | ||
2c8bd7e0 | 1087 | static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when) |
04f9e664 | 1088 | { |
04f9e664 BF |
1089 | u32 w; |
1090 | ||
9aa62f51 CL |
1091 | if (xdr_stream_decode_u32(argp->xdr, &w) < 0) |
1092 | return nfserr_bad_xdr; | |
2c8bd7e0 BH |
1093 | *share_access = w & NFS4_SHARE_ACCESS_MASK; |
1094 | *deleg_want = w & NFS4_SHARE_WANT_MASK; | |
1095 | if (deleg_when) | |
1096 | *deleg_when = w & NFS4_SHARE_WHEN_MASK; | |
1097 | ||
04f9e664 BF |
1098 | switch (w & NFS4_SHARE_ACCESS_MASK) { |
1099 | case NFS4_SHARE_ACCESS_READ: | |
1100 | case NFS4_SHARE_ACCESS_WRITE: | |
1101 | case NFS4_SHARE_ACCESS_BOTH: | |
1102 | break; | |
1103 | default: | |
1104 | return nfserr_bad_xdr; | |
1105 | } | |
fc0d14fe | 1106 | w &= ~NFS4_SHARE_ACCESS_MASK; |
04f9e664 BF |
1107 | if (!w) |
1108 | return nfs_ok; | |
1109 | if (!argp->minorversion) | |
1110 | return nfserr_bad_xdr; | |
1111 | switch (w & NFS4_SHARE_WANT_MASK) { | |
1112 | case NFS4_SHARE_WANT_NO_PREFERENCE: | |
1113 | case NFS4_SHARE_WANT_READ_DELEG: | |
1114 | case NFS4_SHARE_WANT_WRITE_DELEG: | |
1115 | case NFS4_SHARE_WANT_ANY_DELEG: | |
1116 | case NFS4_SHARE_WANT_NO_DELEG: | |
1117 | case NFS4_SHARE_WANT_CANCEL: | |
1118 | break; | |
1119 | default: | |
1120 | return nfserr_bad_xdr; | |
1121 | } | |
92bac8c5 | 1122 | w &= ~NFS4_SHARE_WANT_MASK; |
04f9e664 BF |
1123 | if (!w) |
1124 | return nfs_ok; | |
2c8bd7e0 BH |
1125 | |
1126 | if (!deleg_when) /* open_downgrade */ | |
1127 | return nfserr_inval; | |
04f9e664 BF |
1128 | switch (w) { |
1129 | case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL: | |
1130 | case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED: | |
c668fc6d BH |
1131 | case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL | |
1132 | NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED): | |
04f9e664 BF |
1133 | return nfs_ok; |
1134 | } | |
04f9e664 BF |
1135 | return nfserr_bad_xdr; |
1136 | } | |
1137 | ||
1138 | static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x) | |
1139 | { | |
b07bebd9 CL |
1140 | if (xdr_stream_decode_u32(argp->xdr, x) < 0) |
1141 | return nfserr_bad_xdr; | |
1142 | /* Note: unlike access bits, deny bits may be zero. */ | |
01cd4afa | 1143 | if (*x & ~NFS4_SHARE_DENY_BOTH) |
04f9e664 | 1144 | return nfserr_bad_xdr; |
b07bebd9 | 1145 | |
04f9e664 | 1146 | return nfs_ok; |
04f9e664 BF |
1147 | } |
1148 | ||
1708e50b CL |
1149 | static __be32 |
1150 | nfsd4_decode_open_claim4(struct nfsd4_compoundargs *argp, | |
1151 | struct nfsd4_open *open) | |
1152 | { | |
1153 | __be32 status; | |
1154 | ||
1155 | if (xdr_stream_decode_u32(argp->xdr, &open->op_claim_type) < 0) | |
1156 | return nfserr_bad_xdr; | |
1157 | switch (open->op_claim_type) { | |
1158 | case NFS4_OPEN_CLAIM_NULL: | |
1159 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: | |
1160 | status = nfsd4_decode_component4(argp, &open->op_fname, | |
1161 | &open->op_fnamelen); | |
1162 | if (status) | |
1163 | return status; | |
1164 | break; | |
1165 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
1166 | if (xdr_stream_decode_u32(argp->xdr, &open->op_delegate_type) < 0) | |
1167 | return nfserr_bad_xdr; | |
1168 | break; | |
1169 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
1170 | status = nfsd4_decode_stateid4(argp, &open->op_delegate_stateid); | |
1171 | if (status) | |
1172 | return status; | |
1173 | status = nfsd4_decode_component4(argp, &open->op_fname, | |
1174 | &open->op_fnamelen); | |
1175 | if (status) | |
1176 | return status; | |
1177 | break; | |
1178 | case NFS4_OPEN_CLAIM_FH: | |
1179 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: | |
1180 | if (argp->minorversion < 1) | |
1181 | return nfserr_bad_xdr; | |
1182 | /* void */ | |
1183 | break; | |
1184 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: | |
1185 | if (argp->minorversion < 1) | |
1186 | return nfserr_bad_xdr; | |
1187 | status = nfsd4_decode_stateid4(argp, &open->op_delegate_stateid); | |
1188 | if (status) | |
1189 | return status; | |
1190 | break; | |
1191 | default: | |
1192 | return nfserr_bad_xdr; | |
1193 | } | |
1194 | ||
1195 | return nfs_ok; | |
1196 | } | |
1197 | ||
b37ad28b | 1198 | static __be32 |
1da177e4 LT |
1199 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
1200 | { | |
61e5e0b3 | 1201 | __be32 status; |
2c8bd7e0 | 1202 | u32 dummy; |
1da177e4 LT |
1203 | |
1204 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); | |
1205 | open->op_iattr.ia_valid = 0; | |
fe0750e5 | 1206 | open->op_openowner = NULL; |
1da177e4 | 1207 | |
9d313b17 | 1208 | open->op_xdr_error = 0; |
61e5e0b3 CL |
1209 | if (xdr_stream_decode_u32(argp->xdr, &open->op_seqid) < 0) |
1210 | return nfserr_bad_xdr; | |
1211 | /* deleg_want is ignored */ | |
2c8bd7e0 BH |
1212 | status = nfsd4_decode_share_access(argp, &open->op_share_access, |
1213 | &open->op_deleg_want, &dummy); | |
04f9e664 | 1214 | if (status) |
61e5e0b3 | 1215 | return status; |
04f9e664 BF |
1216 | status = nfsd4_decode_share_deny(argp, &open->op_share_deny); |
1217 | if (status) | |
61e5e0b3 CL |
1218 | return status; |
1219 | status = nfsd4_decode_state_owner4(argp, &open->op_clientid, | |
1220 | &open->op_owner); | |
a084daf5 | 1221 | if (status) |
61e5e0b3 | 1222 | return status; |
e6ec04b2 CL |
1223 | status = nfsd4_decode_openflag4(argp, open); |
1224 | if (status) | |
1225 | return status; | |
61e5e0b3 | 1226 | return nfsd4_decode_open_claim4(argp, open); |
1da177e4 LT |
1227 | } |
1228 | ||
b37ad28b | 1229 | static __be32 |
1da177e4 LT |
1230 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
1231 | { | |
06bee693 | 1232 | __be32 status; |
e1a90ebd AS |
1233 | |
1234 | if (argp->minorversion >= 1) | |
1235 | return nfserr_notsupp; | |
1236 | ||
06bee693 | 1237 | status = nfsd4_decode_stateid4(argp, &open_conf->oc_req_stateid); |
e31a1b66 BH |
1238 | if (status) |
1239 | return status; | |
06bee693 CL |
1240 | if (xdr_stream_decode_u32(argp->xdr, &open_conf->oc_seqid) < 0) |
1241 | return nfserr_bad_xdr; | |
e1a90ebd | 1242 | |
06bee693 | 1243 | return nfs_ok; |
1da177e4 LT |
1244 | } |
1245 | ||
b37ad28b | 1246 | static __be32 |
1da177e4 LT |
1247 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
1248 | { | |
dca71651 CL |
1249 | __be32 status; |
1250 | ||
1251 | status = nfsd4_decode_stateid4(argp, &open_down->od_stateid); | |
e31a1b66 BH |
1252 | if (status) |
1253 | return status; | |
dca71651 CL |
1254 | if (xdr_stream_decode_u32(argp->xdr, &open_down->od_seqid) < 0) |
1255 | return nfserr_bad_xdr; | |
1256 | /* deleg_want is ignored */ | |
2c8bd7e0 BH |
1257 | status = nfsd4_decode_share_access(argp, &open_down->od_share_access, |
1258 | &open_down->od_deleg_want, NULL); | |
04f9e664 BF |
1259 | if (status) |
1260 | return status; | |
dca71651 | 1261 | return nfsd4_decode_share_deny(argp, &open_down->od_share_deny); |
1da177e4 LT |
1262 | } |
1263 | ||
b37ad28b | 1264 | static __be32 |
1da177e4 LT |
1265 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
1266 | { | |
a73bed98 | 1267 | __be32 *p; |
1da177e4 | 1268 | |
a73bed98 CL |
1269 | if (xdr_stream_decode_u32(argp->xdr, &putfh->pf_fhlen) < 0) |
1270 | return nfserr_bad_xdr; | |
1da177e4 | 1271 | if (putfh->pf_fhlen > NFS4_FHSIZE) |
a73bed98 CL |
1272 | return nfserr_bad_xdr; |
1273 | p = xdr_inline_decode(argp->xdr, putfh->pf_fhlen); | |
1274 | if (!p) | |
1275 | return nfserr_bad_xdr; | |
1276 | putfh->pf_fhval = svcxdr_tmpalloc(argp, putfh->pf_fhlen); | |
1277 | if (!putfh->pf_fhval) | |
1278 | return nfserr_jukebox; | |
1279 | memcpy(putfh->pf_fhval, p, putfh->pf_fhlen); | |
1da177e4 | 1280 | |
a73bed98 | 1281 | return nfs_ok; |
1da177e4 LT |
1282 | } |
1283 | ||
e1a90ebd AS |
1284 | static __be32 |
1285 | nfsd4_decode_putpubfh(struct nfsd4_compoundargs *argp, void *p) | |
1286 | { | |
1287 | if (argp->minorversion == 0) | |
1288 | return nfs_ok; | |
1289 | return nfserr_notsupp; | |
1290 | } | |
1291 | ||
b37ad28b | 1292 | static __be32 |
1da177e4 LT |
1293 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
1294 | { | |
3909c3bc | 1295 | __be32 status; |
1da177e4 | 1296 | |
3909c3bc | 1297 | status = nfsd4_decode_stateid4(argp, &read->rd_stateid); |
e31a1b66 BH |
1298 | if (status) |
1299 | return status; | |
3909c3bc CL |
1300 | if (xdr_stream_decode_u64(argp->xdr, &read->rd_offset) < 0) |
1301 | return nfserr_bad_xdr; | |
1302 | if (xdr_stream_decode_u32(argp->xdr, &read->rd_length) < 0) | |
1303 | return nfserr_bad_xdr; | |
1da177e4 | 1304 | |
3909c3bc | 1305 | return nfs_ok; |
1da177e4 LT |
1306 | } |
1307 | ||
b37ad28b | 1308 | static __be32 |
1da177e4 LT |
1309 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
1310 | { | |
0dfaf2a3 | 1311 | __be32 status; |
1da177e4 | 1312 | |
0dfaf2a3 CL |
1313 | if (xdr_stream_decode_u64(argp->xdr, &readdir->rd_cookie) < 0) |
1314 | return nfserr_bad_xdr; | |
1315 | status = nfsd4_decode_verifier4(argp, &readdir->rd_verf); | |
1316 | if (status) | |
1317 | return status; | |
1318 | if (xdr_stream_decode_u32(argp->xdr, &readdir->rd_dircount) < 0) | |
1319 | return nfserr_bad_xdr; | |
1320 | if (xdr_stream_decode_u32(argp->xdr, &readdir->rd_maxcount) < 0) | |
1321 | return nfserr_bad_xdr; | |
1322 | if (xdr_stream_decode_uint32_array(argp->xdr, readdir->rd_bmval, | |
1323 | ARRAY_SIZE(readdir->rd_bmval)) < 0) | |
1324 | return nfserr_bad_xdr; | |
1da177e4 | 1325 | |
0dfaf2a3 | 1326 | return nfs_ok; |
1da177e4 LT |
1327 | } |
1328 | ||
b37ad28b | 1329 | static __be32 |
1da177e4 LT |
1330 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
1331 | { | |
b7f5fbf2 | 1332 | return nfsd4_decode_component4(argp, &remove->rm_name, &remove->rm_namelen); |
1da177e4 LT |
1333 | } |
1334 | ||
b37ad28b | 1335 | static __be32 |
1da177e4 LT |
1336 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
1337 | { | |
ba881a0a | 1338 | __be32 status; |
1da177e4 | 1339 | |
ba881a0a CL |
1340 | status = nfsd4_decode_component4(argp, &rename->rn_sname, &rename->rn_snamelen); |
1341 | if (status) | |
1da177e4 | 1342 | return status; |
ba881a0a | 1343 | return nfsd4_decode_component4(argp, &rename->rn_tname, &rename->rn_tnamelen); |
1da177e4 LT |
1344 | } |
1345 | ||
b37ad28b | 1346 | static __be32 |
1da177e4 LT |
1347 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
1348 | { | |
d12f9045 | 1349 | return nfsd4_decode_clientid4(argp, clientid); |
1da177e4 LT |
1350 | } |
1351 | ||
dcb488a3 AA |
1352 | static __be32 |
1353 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, | |
1354 | struct nfsd4_secinfo *secinfo) | |
1355 | { | |
d0abdae5 | 1356 | return nfsd4_decode_component4(argp, &secinfo->si_name, &secinfo->si_namelen); |
dcb488a3 AA |
1357 | } |
1358 | ||
b37ad28b | 1359 | static __be32 |
1da177e4 LT |
1360 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
1361 | { | |
e31a1b66 | 1362 | __be32 status; |
1da177e4 | 1363 | |
44592fe9 | 1364 | status = nfsd4_decode_stateid4(argp, &setattr->sa_stateid); |
e31a1b66 BH |
1365 | if (status) |
1366 | return status; | |
d1c263a0 CL |
1367 | return nfsd4_decode_fattr4(argp, setattr->sa_bmval, |
1368 | ARRAY_SIZE(setattr->sa_bmval), | |
1369 | &setattr->sa_iattr, &setattr->sa_acl, | |
1370 | &setattr->sa_label, NULL); | |
1da177e4 LT |
1371 | } |
1372 | ||
b37ad28b | 1373 | static __be32 |
1da177e4 LT |
1374 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
1375 | { | |
92fa6c08 | 1376 | __be32 *p, status; |
1da177e4 | 1377 | |
e1a90ebd AS |
1378 | if (argp->minorversion >= 1) |
1379 | return nfserr_notsupp; | |
1380 | ||
92fa6c08 CL |
1381 | status = nfsd4_decode_verifier4(argp, &setclientid->se_verf); |
1382 | if (status) | |
1383 | return status; | |
a084daf5 BF |
1384 | status = nfsd4_decode_opaque(argp, &setclientid->se_name); |
1385 | if (status) | |
92fa6c08 CL |
1386 | return status; |
1387 | if (xdr_stream_decode_u32(argp->xdr, &setclientid->se_callback_prog) < 0) | |
a084daf5 | 1388 | return nfserr_bad_xdr; |
92fa6c08 CL |
1389 | if (xdr_stream_decode_u32(argp->xdr, &setclientid->se_callback_netid_len) < 0) |
1390 | return nfserr_bad_xdr; | |
1391 | p = xdr_inline_decode(argp->xdr, setclientid->se_callback_netid_len); | |
1392 | if (!p) | |
1393 | return nfserr_bad_xdr; | |
1394 | setclientid->se_callback_netid_val = svcxdr_tmpalloc(argp, | |
1395 | setclientid->se_callback_netid_len); | |
1396 | if (!setclientid->se_callback_netid_val) | |
1397 | return nfserr_jukebox; | |
1398 | memcpy(setclientid->se_callback_netid_val, p, | |
1399 | setclientid->se_callback_netid_len); | |
1da177e4 | 1400 | |
92fa6c08 CL |
1401 | if (xdr_stream_decode_u32(argp->xdr, &setclientid->se_callback_addr_len) < 0) |
1402 | return nfserr_bad_xdr; | |
1403 | p = xdr_inline_decode(argp->xdr, setclientid->se_callback_addr_len); | |
1404 | if (!p) | |
1405 | return nfserr_bad_xdr; | |
1406 | setclientid->se_callback_addr_val = svcxdr_tmpalloc(argp, | |
1407 | setclientid->se_callback_addr_len); | |
1408 | if (!setclientid->se_callback_addr_val) | |
1409 | return nfserr_jukebox; | |
1410 | memcpy(setclientid->se_callback_addr_val, p, | |
1411 | setclientid->se_callback_addr_len); | |
1412 | if (xdr_stream_decode_u32(argp->xdr, &setclientid->se_callback_ident) < 0) | |
1413 | return nfserr_bad_xdr; | |
1da177e4 | 1414 | |
92fa6c08 | 1415 | return nfs_ok; |
1da177e4 LT |
1416 | } |
1417 | ||
b37ad28b | 1418 | static __be32 |
1da177e4 LT |
1419 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
1420 | { | |
d1ca5514 | 1421 | __be32 status; |
1da177e4 | 1422 | |
e1a90ebd AS |
1423 | if (argp->minorversion >= 1) |
1424 | return nfserr_notsupp; | |
1425 | ||
d1ca5514 CL |
1426 | status = nfsd4_decode_clientid4(argp, &scd_c->sc_clientid); |
1427 | if (status) | |
1428 | return status; | |
1429 | return nfsd4_decode_verifier4(argp, &scd_c->sc_confirm); | |
1da177e4 LT |
1430 | } |
1431 | ||
1432 | /* Also used for NVERIFY */ | |
b37ad28b | 1433 | static __be32 |
1da177e4 LT |
1434 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
1435 | { | |
67cd453e | 1436 | __be32 *p, status; |
1da177e4 | 1437 | |
67cd453e CL |
1438 | status = nfsd4_decode_bitmap4(argp, verify->ve_bmval, |
1439 | ARRAY_SIZE(verify->ve_bmval)); | |
1440 | if (status) | |
1441 | return status; | |
1da177e4 LT |
1442 | |
1443 | /* For convenience's sake, we compare raw xdr'd attributes in | |
e5f95703 BF |
1444 | * nfsd4_proc_verify */ |
1445 | ||
67cd453e CL |
1446 | if (xdr_stream_decode_u32(argp->xdr, &verify->ve_attrlen) < 0) |
1447 | return nfserr_bad_xdr; | |
1448 | p = xdr_inline_decode(argp->xdr, verify->ve_attrlen); | |
1449 | if (!p) | |
1450 | return nfserr_bad_xdr; | |
1451 | verify->ve_attrval = svcxdr_tmpalloc(argp, verify->ve_attrlen); | |
1452 | if (!verify->ve_attrval) | |
1453 | return nfserr_jukebox; | |
1454 | memcpy(verify->ve_attrval, p, verify->ve_attrlen); | |
1da177e4 | 1455 | |
67cd453e | 1456 | return nfs_ok; |
1da177e4 LT |
1457 | } |
1458 | ||
b37ad28b | 1459 | static __be32 |
1da177e4 LT |
1460 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
1461 | { | |
244e2bef | 1462 | __be32 status; |
1da177e4 | 1463 | |
244e2bef | 1464 | status = nfsd4_decode_stateid4(argp, &write->wr_stateid); |
e31a1b66 BH |
1465 | if (status) |
1466 | return status; | |
244e2bef CL |
1467 | if (xdr_stream_decode_u64(argp->xdr, &write->wr_offset) < 0) |
1468 | return nfserr_bad_xdr; | |
1469 | if (xdr_stream_decode_u32(argp->xdr, &write->wr_stable_how) < 0) | |
1470 | return nfserr_bad_xdr; | |
54bbb7d2 | 1471 | if (write->wr_stable_how > NFS_FILE_SYNC) |
244e2bef CL |
1472 | return nfserr_bad_xdr; |
1473 | if (xdr_stream_decode_u32(argp->xdr, &write->wr_buflen) < 0) | |
1474 | return nfserr_bad_xdr; | |
c1346a12 | 1475 | if (!xdr_stream_subsegment(argp->xdr, &write->wr_payload, write->wr_buflen)) |
244e2bef | 1476 | return nfserr_bad_xdr; |
1da177e4 | 1477 | |
244e2bef | 1478 | return nfs_ok; |
1da177e4 LT |
1479 | } |
1480 | ||
b37ad28b | 1481 | static __be32 |
1da177e4 LT |
1482 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
1483 | { | |
a4a80c15 | 1484 | __be32 status; |
1da177e4 | 1485 | |
e1a90ebd AS |
1486 | if (argp->minorversion >= 1) |
1487 | return nfserr_notsupp; | |
1488 | ||
a4a80c15 CL |
1489 | status = nfsd4_decode_state_owner4(argp, &rlockowner->rl_clientid, |
1490 | &rlockowner->rl_owner); | |
1491 | if (status) | |
1492 | return status; | |
1da177e4 | 1493 | |
60adfc50 AA |
1494 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
1495 | return nfserr_inval; | |
a4a80c15 CL |
1496 | |
1497 | return nfs_ok; | |
1da177e4 LT |
1498 | } |
1499 | ||
0f81d960 CL |
1500 | static __be32 nfsd4_decode_backchannel_ctl(struct nfsd4_compoundargs *argp, struct nfsd4_backchannel_ctl *bc) |
1501 | { | |
1502 | if (xdr_stream_decode_u32(argp->xdr, &bc->bc_cb_program) < 0) | |
1503 | return nfserr_bad_xdr; | |
1504 | return nfsd4_decode_cb_sec(argp, &bc->bc_cb_sec); | |
1505 | } | |
1506 | ||
571e0451 CL |
1507 | static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) |
1508 | { | |
1509 | u32 use_conn_in_rdma_mode; | |
1510 | __be32 status; | |
1511 | ||
1512 | status = nfsd4_decode_sessionid4(argp, &bcts->sessionid); | |
1513 | if (status) | |
1514 | return status; | |
1515 | if (xdr_stream_decode_u32(argp->xdr, &bcts->dir) < 0) | |
1516 | return nfserr_bad_xdr; | |
1517 | if (xdr_stream_decode_u32(argp->xdr, &use_conn_in_rdma_mode) < 0) | |
1518 | return nfserr_bad_xdr; | |
1519 | ||
1520 | return nfs_ok; | |
1521 | } | |
1522 | ||
2548aa78 CL |
1523 | static __be32 |
1524 | nfsd4_decode_state_protect_ops(struct nfsd4_compoundargs *argp, | |
1525 | struct nfsd4_exchange_id *exid) | |
1526 | { | |
1527 | __be32 status; | |
1528 | ||
1529 | status = nfsd4_decode_bitmap4(argp, exid->spo_must_enforce, | |
1530 | ARRAY_SIZE(exid->spo_must_enforce)); | |
1531 | if (status) | |
1532 | return nfserr_bad_xdr; | |
1533 | status = nfsd4_decode_bitmap4(argp, exid->spo_must_allow, | |
1534 | ARRAY_SIZE(exid->spo_must_allow)); | |
1535 | if (status) | |
1536 | return nfserr_bad_xdr; | |
1537 | ||
1538 | return nfs_ok; | |
1539 | } | |
1540 | ||
547bfeb4 CL |
1541 | /* |
1542 | * This implementation currently does not support SP4_SSV. | |
1543 | * This decoder simply skips over these arguments. | |
1544 | */ | |
1545 | static noinline __be32 | |
1546 | nfsd4_decode_ssv_sp_parms(struct nfsd4_compoundargs *argp, | |
1547 | struct nfsd4_exchange_id *exid) | |
1548 | { | |
1549 | u32 count, window, num_gss_handles; | |
1550 | __be32 status; | |
1551 | ||
1552 | /* ssp_ops */ | |
1553 | status = nfsd4_decode_state_protect_ops(argp, exid); | |
1554 | if (status) | |
1555 | return status; | |
1556 | ||
1557 | /* ssp_hash_algs<> */ | |
1558 | if (xdr_stream_decode_u32(argp->xdr, &count) < 0) | |
1559 | return nfserr_bad_xdr; | |
1560 | while (count--) { | |
1561 | status = nfsd4_decode_ignored_string(argp, 0); | |
1562 | if (status) | |
1563 | return status; | |
1564 | } | |
1565 | ||
1566 | /* ssp_encr_algs<> */ | |
1567 | if (xdr_stream_decode_u32(argp->xdr, &count) < 0) | |
1568 | return nfserr_bad_xdr; | |
1569 | while (count--) { | |
1570 | status = nfsd4_decode_ignored_string(argp, 0); | |
1571 | if (status) | |
1572 | return status; | |
1573 | } | |
1574 | ||
1575 | if (xdr_stream_decode_u32(argp->xdr, &window) < 0) | |
1576 | return nfserr_bad_xdr; | |
1577 | if (xdr_stream_decode_u32(argp->xdr, &num_gss_handles) < 0) | |
1578 | return nfserr_bad_xdr; | |
1579 | ||
1580 | return nfs_ok; | |
1581 | } | |
1582 | ||
2db134eb | 1583 | static __be32 |
523ec6ed CL |
1584 | nfsd4_decode_state_protect4_a(struct nfsd4_compoundargs *argp, |
1585 | struct nfsd4_exchange_id *exid) | |
2db134eb | 1586 | { |
523ec6ed | 1587 | __be32 status; |
0733d213 | 1588 | |
523ec6ed | 1589 | if (xdr_stream_decode_u32(argp->xdr, &exid->spa_how) < 0) |
a084daf5 | 1590 | return nfserr_bad_xdr; |
0733d213 AA |
1591 | switch (exid->spa_how) { |
1592 | case SP4_NONE: | |
1593 | break; | |
1594 | case SP4_MACH_CRED: | |
2548aa78 | 1595 | status = nfsd4_decode_state_protect_ops(argp, exid); |
ed941643 | 1596 | if (status) |
2548aa78 | 1597 | return status; |
0733d213 AA |
1598 | break; |
1599 | case SP4_SSV: | |
547bfeb4 | 1600 | status = nfsd4_decode_ssv_sp_parms(argp, exid); |
2548aa78 CL |
1601 | if (status) |
1602 | return status; | |
0733d213 AA |
1603 | break; |
1604 | default: | |
523ec6ed | 1605 | return nfserr_bad_xdr; |
0733d213 AA |
1606 | } |
1607 | ||
523ec6ed CL |
1608 | return nfs_ok; |
1609 | } | |
1610 | ||
10ff8422 CL |
1611 | static __be32 |
1612 | nfsd4_decode_nfs_impl_id4(struct nfsd4_compoundargs *argp, | |
1613 | struct nfsd4_exchange_id *exid) | |
1614 | { | |
1615 | __be32 status; | |
1616 | u32 count; | |
1617 | ||
1618 | if (xdr_stream_decode_u32(argp->xdr, &count) < 0) | |
1619 | return nfserr_bad_xdr; | |
1620 | switch (count) { | |
1621 | case 0: | |
1622 | break; | |
1623 | case 1: | |
1624 | /* Note that RFC 8881 places no length limit on | |
1625 | * nii_domain, but this implementation permits no | |
1626 | * more than NFS4_OPAQUE_LIMIT bytes */ | |
1627 | status = nfsd4_decode_opaque(argp, &exid->nii_domain); | |
1628 | if (status) | |
1629 | return status; | |
1630 | /* Note that RFC 8881 places no length limit on | |
1631 | * nii_name, but this implementation permits no | |
1632 | * more than NFS4_OPAQUE_LIMIT bytes */ | |
1633 | status = nfsd4_decode_opaque(argp, &exid->nii_name); | |
1634 | if (status) | |
1635 | return status; | |
1636 | status = nfsd4_decode_nfstime4(argp, &exid->nii_time); | |
1637 | if (status) | |
1638 | return status; | |
1639 | break; | |
1640 | default: | |
1641 | return nfserr_bad_xdr; | |
1642 | } | |
1643 | ||
1644 | return nfs_ok; | |
1645 | } | |
1646 | ||
523ec6ed CL |
1647 | static __be32 |
1648 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, | |
1649 | struct nfsd4_exchange_id *exid) | |
1650 | { | |
10ff8422 | 1651 | __be32 status; |
523ec6ed CL |
1652 | |
1653 | status = nfsd4_decode_verifier4(argp, &exid->verifier); | |
1654 | if (status) | |
1655 | return status; | |
1656 | status = nfsd4_decode_opaque(argp, &exid->clname); | |
1657 | if (status) | |
1658 | return status; | |
1659 | if (xdr_stream_decode_u32(argp->xdr, &exid->flags) < 0) | |
1660 | return nfserr_bad_xdr; | |
1661 | status = nfsd4_decode_state_protect4_a(argp, exid); | |
1662 | if (status) | |
1663 | return status; | |
10ff8422 | 1664 | return nfsd4_decode_nfs_impl_id4(argp, exid); |
2db134eb AA |
1665 | } |
1666 | ||
3a3f1fba CL |
1667 | static __be32 |
1668 | nfsd4_decode_channel_attrs4(struct nfsd4_compoundargs *argp, | |
1669 | struct nfsd4_channel_attrs *ca) | |
1670 | { | |
1671 | __be32 *p; | |
1672 | ||
1673 | p = xdr_inline_decode(argp->xdr, XDR_UNIT * 7); | |
1674 | if (!p) | |
1675 | return nfserr_bad_xdr; | |
1676 | ||
1677 | /* headerpadsz is ignored */ | |
1678 | p++; | |
1679 | ca->maxreq_sz = be32_to_cpup(p++); | |
1680 | ca->maxresp_sz = be32_to_cpup(p++); | |
1681 | ca->maxresp_cached = be32_to_cpup(p++); | |
1682 | ca->maxops = be32_to_cpup(p++); | |
1683 | ca->maxreqs = be32_to_cpup(p++); | |
1684 | ca->nr_rdma_attrs = be32_to_cpup(p); | |
1685 | switch (ca->nr_rdma_attrs) { | |
1686 | case 0: | |
1687 | break; | |
1688 | case 1: | |
1689 | if (xdr_stream_decode_u32(argp->xdr, &ca->rdma_attrs) < 0) | |
1690 | return nfserr_bad_xdr; | |
1691 | break; | |
1692 | default: | |
1693 | return nfserr_bad_xdr; | |
1694 | } | |
1695 | ||
1696 | return nfs_ok; | |
1697 | } | |
1698 | ||
2db134eb AA |
1699 | static __be32 |
1700 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, | |
1701 | struct nfsd4_create_session *sess) | |
1702 | { | |
81243e3f | 1703 | __be32 status; |
ec6b5d7b | 1704 | |
81243e3f CL |
1705 | status = nfsd4_decode_clientid4(argp, &sess->clientid); |
1706 | if (status) | |
1707 | return status; | |
1708 | if (xdr_stream_decode_u32(argp->xdr, &sess->seqid) < 0) | |
1709 | return nfserr_bad_xdr; | |
1710 | if (xdr_stream_decode_u32(argp->xdr, &sess->flags) < 0) | |
1711 | return nfserr_bad_xdr; | |
3a3f1fba CL |
1712 | status = nfsd4_decode_channel_attrs4(argp, &sess->fore_channel); |
1713 | if (status) | |
1714 | return status; | |
1715 | status = nfsd4_decode_channel_attrs4(argp, &sess->back_channel); | |
81243e3f CL |
1716 | if (status) |
1717 | return status; | |
1718 | if (xdr_stream_decode_u32(argp->xdr, &sess->callback_prog) < 0) | |
1719 | return nfserr_bad_xdr; | |
1720 | status = nfsd4_decode_cb_sec(argp, &sess->cb_sec); | |
3a3f1fba CL |
1721 | if (status) |
1722 | return status; | |
ec6b5d7b | 1723 | |
81243e3f | 1724 | return nfs_ok; |
2db134eb AA |
1725 | } |
1726 | ||
1727 | static __be32 | |
1728 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, | |
1729 | struct nfsd4_destroy_session *destroy_session) | |
1730 | { | |
94e254af | 1731 | return nfsd4_decode_sessionid4(argp, &destroy_session->sessionid); |
2db134eb AA |
1732 | } |
1733 | ||
e1ca12df BS |
1734 | static __be32 |
1735 | nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp, | |
1736 | struct nfsd4_free_stateid *free_stateid) | |
1737 | { | |
aec387d5 | 1738 | return nfsd4_decode_stateid4(argp, &free_stateid->fr_stateid); |
e1ca12df BS |
1739 | } |
1740 | ||
9cf514cc CH |
1741 | #ifdef CONFIG_NFSD_PNFS |
1742 | static __be32 | |
1743 | nfsd4_decode_getdeviceinfo(struct nfsd4_compoundargs *argp, | |
1744 | struct nfsd4_getdeviceinfo *gdev) | |
1745 | { | |
04495971 CL |
1746 | __be32 status; |
1747 | ||
1748 | status = nfsd4_decode_deviceid4(argp, &gdev->gd_devid); | |
1749 | if (status) | |
1750 | return status; | |
1751 | if (xdr_stream_decode_u32(argp->xdr, &gdev->gd_layout_type) < 0) | |
1752 | return nfserr_bad_xdr; | |
1753 | if (xdr_stream_decode_u32(argp->xdr, &gdev->gd_maxcount) < 0) | |
1754 | return nfserr_bad_xdr; | |
1755 | if (xdr_stream_decode_uint32_array(argp->xdr, | |
1756 | &gdev->gd_notify_types, 1) < 0) | |
1757 | return nfserr_bad_xdr; | |
1758 | ||
1759 | return nfs_ok; | |
9cf514cc CH |
1760 | } |
1761 | ||
5185980d CL |
1762 | static __be32 |
1763 | nfsd4_decode_layoutcommit(struct nfsd4_compoundargs *argp, | |
1764 | struct nfsd4_layoutcommit *lcp) | |
1765 | { | |
1766 | __be32 *p, status; | |
1767 | ||
1768 | if (xdr_stream_decode_u64(argp->xdr, &lcp->lc_seg.offset) < 0) | |
1769 | return nfserr_bad_xdr; | |
1770 | if (xdr_stream_decode_u64(argp->xdr, &lcp->lc_seg.length) < 0) | |
1771 | return nfserr_bad_xdr; | |
1772 | if (xdr_stream_decode_bool(argp->xdr, &lcp->lc_reclaim) < 0) | |
1773 | return nfserr_bad_xdr; | |
1774 | status = nfsd4_decode_stateid4(argp, &lcp->lc_sid); | |
1775 | if (status) | |
1776 | return status; | |
1777 | if (xdr_stream_decode_u32(argp->xdr, &lcp->lc_newoffset) < 0) | |
1778 | return nfserr_bad_xdr; | |
1779 | if (lcp->lc_newoffset) { | |
1780 | if (xdr_stream_decode_u64(argp->xdr, &lcp->lc_last_wr) < 0) | |
1781 | return nfserr_bad_xdr; | |
1782 | } else | |
1783 | lcp->lc_last_wr = 0; | |
1784 | p = xdr_inline_decode(argp->xdr, XDR_UNIT); | |
1785 | if (!p) | |
1786 | return nfserr_bad_xdr; | |
1787 | if (xdr_item_is_present(p)) { | |
1788 | status = nfsd4_decode_nfstime4(argp, &lcp->lc_mtime); | |
1789 | if (status) | |
1790 | return status; | |
1791 | } else { | |
1792 | lcp->lc_mtime.tv_nsec = UTIME_NOW; | |
1793 | } | |
1794 | return nfsd4_decode_layoutupdate4(argp, lcp); | |
1795 | } | |
1796 | ||
9cf514cc CH |
1797 | static __be32 |
1798 | nfsd4_decode_layoutget(struct nfsd4_compoundargs *argp, | |
1799 | struct nfsd4_layoutget *lgp) | |
1800 | { | |
c8e88e3a | 1801 | __be32 status; |
db59c0ef | 1802 | |
c8e88e3a CL |
1803 | if (xdr_stream_decode_u32(argp->xdr, &lgp->lg_signal) < 0) |
1804 | return nfserr_bad_xdr; | |
1805 | if (xdr_stream_decode_u32(argp->xdr, &lgp->lg_layout_type) < 0) | |
1806 | return nfserr_bad_xdr; | |
1807 | if (xdr_stream_decode_u32(argp->xdr, &lgp->lg_seg.iomode) < 0) | |
1808 | return nfserr_bad_xdr; | |
1809 | if (xdr_stream_decode_u64(argp->xdr, &lgp->lg_seg.offset) < 0) | |
1810 | return nfserr_bad_xdr; | |
1811 | if (xdr_stream_decode_u64(argp->xdr, &lgp->lg_seg.length) < 0) | |
1812 | return nfserr_bad_xdr; | |
1813 | if (xdr_stream_decode_u64(argp->xdr, &lgp->lg_minlength) < 0) | |
1814 | return nfserr_bad_xdr; | |
1815 | status = nfsd4_decode_stateid4(argp, &lgp->lg_sid); | |
db59c0ef KM |
1816 | if (status) |
1817 | return status; | |
c8e88e3a CL |
1818 | if (xdr_stream_decode_u32(argp->xdr, &lgp->lg_maxcount) < 0) |
1819 | return nfserr_bad_xdr; | |
db59c0ef | 1820 | |
c8e88e3a | 1821 | return nfs_ok; |
9cf514cc CH |
1822 | } |
1823 | ||
9cf514cc CH |
1824 | static __be32 |
1825 | nfsd4_decode_layoutreturn(struct nfsd4_compoundargs *argp, | |
1826 | struct nfsd4_layoutreturn *lrp) | |
1827 | { | |
645fcad3 CL |
1828 | if (xdr_stream_decode_bool(argp->xdr, &lrp->lr_reclaim) < 0) |
1829 | return nfserr_bad_xdr; | |
1830 | if (xdr_stream_decode_u32(argp->xdr, &lrp->lr_layout_type) < 0) | |
1831 | return nfserr_bad_xdr; | |
1832 | if (xdr_stream_decode_u32(argp->xdr, &lrp->lr_seg.iomode) < 0) | |
1833 | return nfserr_bad_xdr; | |
1834 | return nfsd4_decode_layoutreturn4(argp, lrp); | |
9cf514cc CH |
1835 | } |
1836 | #endif /* CONFIG_NFSD_PNFS */ | |
1837 | ||
53d70873 CL |
1838 | static __be32 nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, |
1839 | struct nfsd4_secinfo_no_name *sin) | |
1840 | { | |
1841 | if (xdr_stream_decode_u32(argp->xdr, &sin->sin_style) < 0) | |
1842 | return nfserr_bad_xdr; | |
1843 | return nfs_ok; | |
1844 | } | |
1845 | ||
cf907b11 CL |
1846 | static __be32 |
1847 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, | |
1848 | struct nfsd4_sequence *seq) | |
1849 | { | |
1850 | __be32 *p, status; | |
1851 | ||
1852 | status = nfsd4_decode_sessionid4(argp, &seq->sessionid); | |
1853 | if (status) | |
1854 | return status; | |
1855 | p = xdr_inline_decode(argp->xdr, XDR_UNIT * 4); | |
1856 | if (!p) | |
1857 | return nfserr_bad_xdr; | |
1858 | seq->seqid = be32_to_cpup(p++); | |
1859 | seq->slotid = be32_to_cpup(p++); | |
1860 | seq->maxslots = be32_to_cpup(p++); | |
1861 | seq->cachethis = be32_to_cpup(p); | |
1862 | ||
1863 | return nfs_ok; | |
1864 | } | |
1865 | ||
b7a0c8f6 CL |
1866 | static __be32 |
1867 | nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid) | |
1868 | { | |
1869 | struct nfsd4_test_stateid_id *stateid; | |
1870 | __be32 status; | |
1871 | u32 i; | |
1872 | ||
1873 | if (xdr_stream_decode_u32(argp->xdr, &test_stateid->ts_num_ids) < 0) | |
1874 | return nfserr_bad_xdr; | |
1875 | ||
1876 | INIT_LIST_HEAD(&test_stateid->ts_stateid_list); | |
1877 | for (i = 0; i < test_stateid->ts_num_ids; i++) { | |
1878 | stateid = svcxdr_tmpalloc(argp, sizeof(*stateid)); | |
1879 | if (!stateid) | |
1880 | return nfserrno(-ENOMEM); /* XXX: not jukebox? */ | |
1881 | INIT_LIST_HEAD(&stateid->ts_id_list); | |
1882 | list_add_tail(&stateid->ts_id_list, &test_stateid->ts_stateid_list); | |
1883 | status = nfsd4_decode_stateid4(argp, &stateid->ts_id_stateid); | |
1884 | if (status) | |
1885 | return status; | |
1886 | } | |
1887 | ||
1888 | return nfs_ok; | |
1889 | } | |
1890 | ||
c95f2ec3 CL |
1891 | static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, |
1892 | struct nfsd4_destroy_clientid *dc) | |
1893 | { | |
1894 | return nfsd4_decode_clientid4(argp, &dc->clientid); | |
1895 | } | |
1896 | ||
0d646784 CL |
1897 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, |
1898 | struct nfsd4_reclaim_complete *rc) | |
1899 | { | |
1900 | if (xdr_stream_decode_bool(argp->xdr, &rc->rca_one_fs) < 0) | |
1901 | return nfserr_bad_xdr; | |
1902 | return nfs_ok; | |
1903 | } | |
1904 | ||
95d871f0 AS |
1905 | static __be32 |
1906 | nfsd4_decode_fallocate(struct nfsd4_compoundargs *argp, | |
1907 | struct nfsd4_fallocate *fallocate) | |
1908 | { | |
6aef27aa | 1909 | __be32 status; |
95d871f0 | 1910 | |
6aef27aa | 1911 | status = nfsd4_decode_stateid4(argp, &fallocate->falloc_stateid); |
95d871f0 AS |
1912 | if (status) |
1913 | return status; | |
6aef27aa CL |
1914 | if (xdr_stream_decode_u64(argp->xdr, &fallocate->falloc_offset) < 0) |
1915 | return nfserr_bad_xdr; | |
1916 | if (xdr_stream_decode_u64(argp->xdr, &fallocate->falloc_length) < 0) | |
1917 | return nfserr_bad_xdr; | |
95d871f0 | 1918 | |
6aef27aa | 1919 | return nfs_ok; |
95d871f0 AS |
1920 | } |
1921 | ||
ffa0160a CH |
1922 | static __be32 |
1923 | nfsd4_decode_clone(struct nfsd4_compoundargs *argp, struct nfsd4_clone *clone) | |
1924 | { | |
1925 | DECODE_HEAD; | |
1926 | ||
1927 | status = nfsd4_decode_stateid(argp, &clone->cl_src_stateid); | |
1928 | if (status) | |
1929 | return status; | |
1930 | status = nfsd4_decode_stateid(argp, &clone->cl_dst_stateid); | |
1931 | if (status) | |
1932 | return status; | |
1933 | ||
1934 | READ_BUF(8 + 8 + 8); | |
1935 | p = xdr_decode_hyper(p, &clone->cl_src_pos); | |
1936 | p = xdr_decode_hyper(p, &clone->cl_dst_pos); | |
1937 | p = xdr_decode_hyper(p, &clone->cl_count); | |
1938 | DECODE_TAIL; | |
1939 | } | |
1940 | ||
84e1b21d OK |
1941 | static __be32 nfsd4_decode_nl4_server(struct nfsd4_compoundargs *argp, |
1942 | struct nl4_server *ns) | |
1943 | { | |
84e1b21d | 1944 | struct nfs42_netaddr *naddr; |
f49e4b4d | 1945 | __be32 *p; |
84e1b21d | 1946 | |
f49e4b4d CL |
1947 | if (xdr_stream_decode_u32(argp->xdr, &ns->nl4_type) < 0) |
1948 | return nfserr_bad_xdr; | |
84e1b21d OK |
1949 | |
1950 | /* currently support for 1 inter-server source server */ | |
1951 | switch (ns->nl4_type) { | |
1952 | case NL4_NETADDR: | |
1953 | naddr = &ns->u.nl4_addr; | |
1954 | ||
f49e4b4d CL |
1955 | if (xdr_stream_decode_u32(argp->xdr, &naddr->netid_len) < 0) |
1956 | return nfserr_bad_xdr; | |
84e1b21d | 1957 | if (naddr->netid_len > RPCBIND_MAXNETIDLEN) |
f49e4b4d | 1958 | return nfserr_bad_xdr; |
84e1b21d | 1959 | |
f49e4b4d CL |
1960 | p = xdr_inline_decode(argp->xdr, naddr->netid_len); |
1961 | if (!p) | |
1962 | return nfserr_bad_xdr; | |
1963 | memcpy(naddr->netid, p, naddr->netid_len); | |
84e1b21d | 1964 | |
f49e4b4d CL |
1965 | if (xdr_stream_decode_u32(argp->xdr, &naddr->addr_len) < 0) |
1966 | return nfserr_bad_xdr; | |
84e1b21d | 1967 | if (naddr->addr_len > RPCBIND_MAXUADDRLEN) |
f49e4b4d | 1968 | return nfserr_bad_xdr; |
84e1b21d | 1969 | |
f49e4b4d CL |
1970 | p = xdr_inline_decode(argp->xdr, naddr->addr_len); |
1971 | if (!p) | |
1972 | return nfserr_bad_xdr; | |
1973 | memcpy(naddr->addr, p, naddr->addr_len); | |
84e1b21d OK |
1974 | break; |
1975 | default: | |
f49e4b4d | 1976 | return nfserr_bad_xdr; |
84e1b21d | 1977 | } |
f49e4b4d CL |
1978 | |
1979 | return nfs_ok; | |
84e1b21d OK |
1980 | } |
1981 | ||
29ae7f9d AS |
1982 | static __be32 |
1983 | nfsd4_decode_copy(struct nfsd4_compoundargs *argp, struct nfsd4_copy *copy) | |
1984 | { | |
84e1b21d | 1985 | struct nl4_server *ns_dummy; |
e8febea7 CL |
1986 | u32 consecutive, i, count; |
1987 | __be32 status; | |
29ae7f9d | 1988 | |
e8febea7 | 1989 | status = nfsd4_decode_stateid4(argp, ©->cp_src_stateid); |
29ae7f9d AS |
1990 | if (status) |
1991 | return status; | |
e8febea7 | 1992 | status = nfsd4_decode_stateid4(argp, ©->cp_dst_stateid); |
29ae7f9d AS |
1993 | if (status) |
1994 | return status; | |
e8febea7 CL |
1995 | if (xdr_stream_decode_u64(argp->xdr, ©->cp_src_pos) < 0) |
1996 | return nfserr_bad_xdr; | |
1997 | if (xdr_stream_decode_u64(argp->xdr, ©->cp_dst_pos) < 0) | |
1998 | return nfserr_bad_xdr; | |
1999 | if (xdr_stream_decode_u64(argp->xdr, ©->cp_count) < 0) | |
2000 | return nfserr_bad_xdr; | |
2001 | /* ca_consecutive: we always do consecutive copies */ | |
2002 | if (xdr_stream_decode_u32(argp->xdr, &consecutive) < 0) | |
2003 | return nfserr_bad_xdr; | |
2004 | if (xdr_stream_decode_u32(argp->xdr, ©->cp_synchronous) < 0) | |
2005 | return nfserr_bad_xdr; | |
29ae7f9d | 2006 | |
e8febea7 CL |
2007 | if (xdr_stream_decode_u32(argp->xdr, &count) < 0) |
2008 | return nfserr_bad_xdr; | |
84e1b21d OK |
2009 | copy->cp_intra = false; |
2010 | if (count == 0) { /* intra-server copy */ | |
2011 | copy->cp_intra = true; | |
e8febea7 | 2012 | return nfs_ok; |
84e1b21d OK |
2013 | } |
2014 | ||
e8febea7 | 2015 | /* decode all the supplied server addresses but use only the first */ |
84e1b21d OK |
2016 | status = nfsd4_decode_nl4_server(argp, ©->cp_src); |
2017 | if (status) | |
2018 | return status; | |
2019 | ||
2020 | ns_dummy = kmalloc(sizeof(struct nl4_server), GFP_KERNEL); | |
2021 | if (ns_dummy == NULL) | |
e8febea7 | 2022 | return nfserrno(-ENOMEM); /* XXX: jukebox? */ |
84e1b21d OK |
2023 | for (i = 0; i < count - 1; i++) { |
2024 | status = nfsd4_decode_nl4_server(argp, ns_dummy); | |
2025 | if (status) { | |
2026 | kfree(ns_dummy); | |
2027 | return status; | |
2028 | } | |
2029 | } | |
2030 | kfree(ns_dummy); | |
29ae7f9d | 2031 | |
e8febea7 | 2032 | return nfs_ok; |
29ae7f9d AS |
2033 | } |
2034 | ||
6308bc98 OK |
2035 | static __be32 |
2036 | nfsd4_decode_offload_status(struct nfsd4_compoundargs *argp, | |
2037 | struct nfsd4_offload_status *os) | |
2038 | { | |
2039 | return nfsd4_decode_stateid(argp, &os->stateid); | |
2040 | } | |
2041 | ||
51911868 OK |
2042 | static __be32 |
2043 | nfsd4_decode_copy_notify(struct nfsd4_compoundargs *argp, | |
2044 | struct nfsd4_copy_notify *cn) | |
2045 | { | |
5aff7d08 | 2046 | __be32 status; |
51911868 OK |
2047 | |
2048 | status = nfsd4_decode_stateid(argp, &cn->cpn_src_stateid); | |
2049 | if (status) | |
2050 | return status; | |
2051 | return nfsd4_decode_nl4_server(argp, &cn->cpn_dst); | |
2052 | } | |
2053 | ||
24bab491 AS |
2054 | static __be32 |
2055 | nfsd4_decode_seek(struct nfsd4_compoundargs *argp, struct nfsd4_seek *seek) | |
2056 | { | |
2057 | DECODE_HEAD; | |
2058 | ||
2059 | status = nfsd4_decode_stateid(argp, &seek->seek_stateid); | |
2060 | if (status) | |
2061 | return status; | |
2062 | ||
2063 | READ_BUF(8 + 4); | |
2064 | p = xdr_decode_hyper(p, &seek->seek_offset); | |
2065 | seek->seek_whence = be32_to_cpup(p); | |
2066 | ||
2067 | DECODE_TAIL; | |
2068 | } | |
2069 | ||
23e50fe3 FL |
2070 | /* |
2071 | * XDR data that is more than PAGE_SIZE in size is normally part of a | |
2072 | * read or write. However, the size of extended attributes is limited | |
2073 | * by the maximum request size, and then further limited by the underlying | |
2074 | * filesystem limits. This can exceed PAGE_SIZE (currently, XATTR_SIZE_MAX | |
2075 | * is 64k). Since there is no kvec- or page-based interface to xattrs, | |
2076 | * and we're not dealing with contiguous pages, we need to do some copying. | |
2077 | */ | |
2078 | ||
2079 | /* | |
c1346a12 | 2080 | * Decode data into buffer. |
23e50fe3 FL |
2081 | */ |
2082 | static __be32 | |
c1346a12 CL |
2083 | nfsd4_vbuf_from_vector(struct nfsd4_compoundargs *argp, struct xdr_buf *xdr, |
2084 | char **bufp, u32 buflen) | |
23e50fe3 | 2085 | { |
c1346a12 CL |
2086 | struct page **pages = xdr->pages; |
2087 | struct kvec *head = xdr->head; | |
23e50fe3 FL |
2088 | char *tmp, *dp; |
2089 | u32 len; | |
2090 | ||
2091 | if (buflen <= head->iov_len) { | |
2092 | /* | |
2093 | * We're in luck, the head has enough space. Just return | |
2094 | * the head, no need for copying. | |
2095 | */ | |
2096 | *bufp = head->iov_base; | |
2097 | return 0; | |
2098 | } | |
2099 | ||
2100 | tmp = svcxdr_tmpalloc(argp, buflen); | |
2101 | if (tmp == NULL) | |
2102 | return nfserr_jukebox; | |
2103 | ||
2104 | dp = tmp; | |
2105 | memcpy(dp, head->iov_base, head->iov_len); | |
2106 | buflen -= head->iov_len; | |
2107 | dp += head->iov_len; | |
2108 | ||
2109 | while (buflen > 0) { | |
2110 | len = min_t(u32, buflen, PAGE_SIZE); | |
2111 | memcpy(dp, page_address(*pages), len); | |
2112 | ||
2113 | buflen -= len; | |
2114 | dp += len; | |
2115 | pages++; | |
2116 | } | |
2117 | ||
2118 | *bufp = tmp; | |
2119 | return 0; | |
2120 | } | |
2121 | ||
2122 | /* | |
2123 | * Get a user extended attribute name from the XDR buffer. | |
2124 | * It will not have the "user." prefix, so prepend it. | |
2125 | * Lastly, check for nul characters in the name. | |
2126 | */ | |
2127 | static __be32 | |
2128 | nfsd4_decode_xattr_name(struct nfsd4_compoundargs *argp, char **namep) | |
2129 | { | |
2130 | DECODE_HEAD; | |
2131 | char *name, *sp, *dp; | |
2132 | u32 namelen, cnt; | |
2133 | ||
2134 | READ_BUF(4); | |
2135 | namelen = be32_to_cpup(p++); | |
2136 | ||
2137 | if (namelen > (XATTR_NAME_MAX - XATTR_USER_PREFIX_LEN)) | |
2138 | return nfserr_nametoolong; | |
2139 | ||
2140 | if (namelen == 0) | |
2141 | goto xdr_error; | |
2142 | ||
2143 | READ_BUF(namelen); | |
2144 | ||
2145 | name = svcxdr_tmpalloc(argp, namelen + XATTR_USER_PREFIX_LEN + 1); | |
2146 | if (!name) | |
2147 | return nfserr_jukebox; | |
2148 | ||
2149 | memcpy(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN); | |
2150 | ||
2151 | /* | |
2152 | * Copy the extended attribute name over while checking for 0 | |
2153 | * characters. | |
2154 | */ | |
2155 | sp = (char *)p; | |
2156 | dp = name + XATTR_USER_PREFIX_LEN; | |
2157 | cnt = namelen; | |
2158 | ||
2159 | while (cnt-- > 0) { | |
2160 | if (*sp == '\0') | |
2161 | goto xdr_error; | |
2162 | *dp++ = *sp++; | |
2163 | } | |
2164 | *dp = '\0'; | |
2165 | ||
2166 | *namep = name; | |
2167 | ||
2168 | DECODE_TAIL; | |
2169 | } | |
2170 | ||
2171 | /* | |
2172 | * A GETXATTR op request comes without a length specifier. We just set the | |
2173 | * maximum length for the reply based on XATTR_SIZE_MAX and the maximum | |
2174 | * channel reply size. nfsd_getxattr will probe the length of the xattr, | |
2175 | * check it against getxa_len, and allocate + return the value. | |
2176 | */ | |
2177 | static __be32 | |
2178 | nfsd4_decode_getxattr(struct nfsd4_compoundargs *argp, | |
2179 | struct nfsd4_getxattr *getxattr) | |
2180 | { | |
2181 | __be32 status; | |
2182 | u32 maxcount; | |
2183 | ||
2184 | status = nfsd4_decode_xattr_name(argp, &getxattr->getxa_name); | |
2185 | if (status) | |
2186 | return status; | |
2187 | ||
2188 | maxcount = svc_max_payload(argp->rqstp); | |
2189 | maxcount = min_t(u32, XATTR_SIZE_MAX, maxcount); | |
2190 | ||
2191 | getxattr->getxa_len = maxcount; | |
2192 | ||
2193 | return status; | |
2194 | } | |
2195 | ||
2196 | static __be32 | |
2197 | nfsd4_decode_setxattr(struct nfsd4_compoundargs *argp, | |
2198 | struct nfsd4_setxattr *setxattr) | |
2199 | { | |
2200 | DECODE_HEAD; | |
2201 | u32 flags, maxcount, size; | |
23e50fe3 FL |
2202 | |
2203 | READ_BUF(4); | |
2204 | flags = be32_to_cpup(p++); | |
2205 | ||
2206 | if (flags > SETXATTR4_REPLACE) | |
2207 | return nfserr_inval; | |
2208 | setxattr->setxa_flags = flags; | |
2209 | ||
2210 | status = nfsd4_decode_xattr_name(argp, &setxattr->setxa_name); | |
2211 | if (status) | |
2212 | return status; | |
2213 | ||
2214 | maxcount = svc_max_payload(argp->rqstp); | |
2215 | maxcount = min_t(u32, XATTR_SIZE_MAX, maxcount); | |
2216 | ||
2217 | READ_BUF(4); | |
2218 | size = be32_to_cpup(p++); | |
2219 | if (size > maxcount) | |
2220 | return nfserr_xattr2big; | |
2221 | ||
2222 | setxattr->setxa_len = size; | |
2223 | if (size > 0) { | |
c1346a12 | 2224 | struct xdr_buf payload; |
23e50fe3 | 2225 | |
c1346a12 CL |
2226 | if (!xdr_stream_subsegment(argp->xdr, &payload, size)) |
2227 | goto xdr_error; | |
2228 | status = nfsd4_vbuf_from_vector(argp, &payload, | |
2229 | &setxattr->setxa_buf, size); | |
23e50fe3 FL |
2230 | } |
2231 | ||
2232 | DECODE_TAIL; | |
2233 | } | |
2234 | ||
2235 | static __be32 | |
2236 | nfsd4_decode_listxattrs(struct nfsd4_compoundargs *argp, | |
2237 | struct nfsd4_listxattrs *listxattrs) | |
2238 | { | |
2239 | DECODE_HEAD; | |
2240 | u32 maxcount; | |
2241 | ||
2242 | READ_BUF(12); | |
2243 | p = xdr_decode_hyper(p, &listxattrs->lsxa_cookie); | |
2244 | ||
2245 | /* | |
2246 | * If the cookie is too large to have even one user.x attribute | |
2247 | * plus trailing '\0' left in a maximum size buffer, it's invalid. | |
2248 | */ | |
2249 | if (listxattrs->lsxa_cookie >= | |
2250 | (XATTR_LIST_MAX / (XATTR_USER_PREFIX_LEN + 2))) | |
2251 | return nfserr_badcookie; | |
2252 | ||
2253 | maxcount = be32_to_cpup(p++); | |
2254 | if (maxcount < 8) | |
2255 | /* Always need at least 2 words (length and one character) */ | |
2256 | return nfserr_inval; | |
2257 | ||
2258 | maxcount = min(maxcount, svc_max_payload(argp->rqstp)); | |
2259 | listxattrs->lsxa_maxcount = maxcount; | |
2260 | ||
2261 | DECODE_TAIL; | |
2262 | } | |
2263 | ||
2264 | static __be32 | |
2265 | nfsd4_decode_removexattr(struct nfsd4_compoundargs *argp, | |
2266 | struct nfsd4_removexattr *removexattr) | |
2267 | { | |
2268 | return nfsd4_decode_xattr_name(argp, &removexattr->rmxa_name); | |
2269 | } | |
2270 | ||
347e0ad9 BH |
2271 | static __be32 |
2272 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) | |
2273 | { | |
2274 | return nfs_ok; | |
2275 | } | |
2276 | ||
3c375c6f BH |
2277 | static __be32 |
2278 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) | |
2279 | { | |
1e685ec2 | 2280 | return nfserr_notsupp; |
3c375c6f BH |
2281 | } |
2282 | ||
347e0ad9 BH |
2283 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
2284 | ||
c1df609d | 2285 | static const nfsd4_dec nfsd4_dec_ops[] = { |
ad1060c8 BF |
2286 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
2287 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, | |
2288 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, | |
2289 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, | |
2290 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, | |
2291 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, | |
2292 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, | |
2293 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, | |
2294 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, | |
2295 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, | |
2296 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, | |
2297 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, | |
2298 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, | |
2299 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, | |
2300 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
2301 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, | |
2302 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
2303 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, | |
2304 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, | |
2305 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, | |
e1a90ebd | 2306 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_putpubfh, |
ad1060c8 BF |
2307 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
2308 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, | |
2309 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, | |
2310 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, | |
2311 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, | |
2312 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, | |
2313 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, | |
2314 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, | |
2315 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, | |
2316 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, | |
2317 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, | |
2318 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, | |
2319 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, | |
2320 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, | |
2321 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, | |
2322 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, | |
2db134eb AA |
2323 | |
2324 | /* new operations for NFSv4.1 */ | |
cb73a9f4 | 2325 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_backchannel_ctl, |
1d1bc8f2 | 2326 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
9064caae RD |
2327 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
2328 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, | |
2329 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, | |
e1ca12df | 2330 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, |
9064caae | 2331 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
9cf514cc CH |
2332 | #ifdef CONFIG_NFSD_PNFS |
2333 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_getdeviceinfo, | |
2334 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
2335 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_layoutcommit, | |
2336 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_layoutget, | |
2337 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_layoutreturn, | |
2338 | #else | |
9064caae RD |
2339 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, |
2340 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, | |
2341 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, | |
2342 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, | |
2343 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, | |
9cf514cc | 2344 | #endif |
04f4ad16 | 2345 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
9064caae RD |
2346 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
2347 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, | |
17456804 | 2348 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid, |
9064caae | 2349 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
345c2842 | 2350 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, |
4dc6ec00 | 2351 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
87a15a80 AS |
2352 | |
2353 | /* new operations for NFSv4.2 */ | |
95d871f0 | 2354 | [OP_ALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate, |
29ae7f9d | 2355 | [OP_COPY] = (nfsd4_dec)nfsd4_decode_copy, |
51911868 | 2356 | [OP_COPY_NOTIFY] = (nfsd4_dec)nfsd4_decode_copy_notify, |
b0cb9085 | 2357 | [OP_DEALLOCATE] = (nfsd4_dec)nfsd4_decode_fallocate, |
87a15a80 AS |
2358 | [OP_IO_ADVISE] = (nfsd4_dec)nfsd4_decode_notsupp, |
2359 | [OP_LAYOUTERROR] = (nfsd4_dec)nfsd4_decode_notsupp, | |
2360 | [OP_LAYOUTSTATS] = (nfsd4_dec)nfsd4_decode_notsupp, | |
885e2bf3 | 2361 | [OP_OFFLOAD_CANCEL] = (nfsd4_dec)nfsd4_decode_offload_status, |
6308bc98 | 2362 | [OP_OFFLOAD_STATUS] = (nfsd4_dec)nfsd4_decode_offload_status, |
528b8493 | 2363 | [OP_READ_PLUS] = (nfsd4_dec)nfsd4_decode_read, |
24bab491 | 2364 | [OP_SEEK] = (nfsd4_dec)nfsd4_decode_seek, |
87a15a80 | 2365 | [OP_WRITE_SAME] = (nfsd4_dec)nfsd4_decode_notsupp, |
ffa0160a | 2366 | [OP_CLONE] = (nfsd4_dec)nfsd4_decode_clone, |
23e50fe3 FL |
2367 | /* RFC 8276 extended atributes operations */ |
2368 | [OP_GETXATTR] = (nfsd4_dec)nfsd4_decode_getxattr, | |
2369 | [OP_SETXATTR] = (nfsd4_dec)nfsd4_decode_setxattr, | |
2370 | [OP_LISTXATTRS] = (nfsd4_dec)nfsd4_decode_listxattrs, | |
2371 | [OP_REMOVEXATTR] = (nfsd4_dec)nfsd4_decode_removexattr, | |
2db134eb AA |
2372 | }; |
2373 | ||
e1a90ebd AS |
2374 | static inline bool |
2375 | nfsd4_opnum_in_range(struct nfsd4_compoundargs *argp, struct nfsd4_op *op) | |
2376 | { | |
8217d146 | 2377 | if (op->opnum < FIRST_NFS4_OP) |
e1a90ebd | 2378 | return false; |
8217d146 | 2379 | else if (argp->minorversion == 0 && op->opnum > LAST_NFS40_OP) |
e1a90ebd | 2380 | return false; |
8217d146 AS |
2381 | else if (argp->minorversion == 1 && op->opnum > LAST_NFS41_OP) |
2382 | return false; | |
2383 | else if (argp->minorversion == 2 && op->opnum > LAST_NFS42_OP) | |
e1a90ebd AS |
2384 | return false; |
2385 | return true; | |
2386 | } | |
f2feb96b | 2387 | |
b37ad28b | 2388 | static __be32 |
1da177e4 LT |
2389 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
2390 | { | |
2391 | DECODE_HEAD; | |
2392 | struct nfsd4_op *op; | |
1091006c | 2393 | bool cachethis = false; |
a5cddc88 BF |
2394 | int auth_slack= argp->rqstp->rq_auth_slack; |
2395 | int max_reply = auth_slack + 8; /* opcnt, status */ | |
b0e35fda BF |
2396 | int readcount = 0; |
2397 | int readbytes = 0; | |
1da177e4 LT |
2398 | int i; |
2399 | ||
1da177e4 | 2400 | READ_BUF(4); |
06553991 | 2401 | argp->taglen = be32_to_cpup(p++); |
4aed9c46 | 2402 | READ_BUF(argp->taglen); |
1da177e4 | 2403 | SAVEMEM(argp->tag, argp->taglen); |
4aed9c46 | 2404 | READ_BUF(8); |
06553991 BF |
2405 | argp->minorversion = be32_to_cpup(p++); |
2406 | argp->opcnt = be32_to_cpup(p++); | |
4f0cefbf | 2407 | max_reply += 4 + (XDR_QUADLEN(argp->taglen) << 2); |
1da177e4 LT |
2408 | |
2409 | if (argp->taglen > NFSD4_MAX_TAGLEN) | |
2410 | goto xdr_error; | |
0078117c BF |
2411 | /* |
2412 | * NFS4ERR_RESOURCE is a more helpful error than GARBAGE_ARGS | |
2413 | * here, so we return success at the xdr level so that | |
2414 | * nfsd4_proc can handle this is an NFS-level error. | |
2415 | */ | |
2416 | if (argp->opcnt > NFSD_MAX_OPS_PER_COMPOUND) | |
2417 | return 0; | |
1da177e4 | 2418 | |
e8c96f8c | 2419 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
5d6031ca | 2420 | argp->ops = kzalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
1da177e4 LT |
2421 | if (!argp->ops) { |
2422 | argp->ops = argp->iops; | |
817cb9d4 | 2423 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
1da177e4 LT |
2424 | goto xdr_error; |
2425 | } | |
2426 | } | |
2427 | ||
e1a90ebd | 2428 | if (argp->minorversion > NFSD_SUPPORTED_MINOR_VERSION) |
30cff1ff BH |
2429 | argp->opcnt = 0; |
2430 | ||
1da177e4 LT |
2431 | for (i = 0; i < argp->opcnt; i++) { |
2432 | op = &argp->ops[i]; | |
2433 | op->replay = NULL; | |
2434 | ||
8a61b18c | 2435 | READ_BUF(4); |
06553991 | 2436 | op->opnum = be32_to_cpup(p++); |
1da177e4 | 2437 | |
08281341 | 2438 | if (nfsd4_opnum_in_range(argp, op)) { |
e1a90ebd | 2439 | op->status = nfsd4_dec_ops[op->opnum](argp, &op->u); |
08281341 CL |
2440 | if (op->status != nfs_ok) |
2441 | trace_nfsd_compound_decode_err(argp->rqstp, | |
2442 | argp->opcnt, i, | |
2443 | op->opnum, | |
2444 | op->status); | |
2445 | } else { | |
1da177e4 LT |
2446 | op->opnum = OP_ILLEGAL; |
2447 | op->status = nfserr_op_illegal; | |
1da177e4 | 2448 | } |
f4f9ef4a | 2449 | op->opdesc = OPDESC(op); |
1091006c BF |
2450 | /* |
2451 | * We'll try to cache the result in the DRC if any one | |
2452 | * op in the compound wants to be cached: | |
2453 | */ | |
2454 | cachethis |= nfsd4_cache_this_op(op); | |
6ff40dec | 2455 | |
528b8493 | 2456 | if (op->opnum == OP_READ || op->opnum == OP_READ_PLUS) { |
b0e35fda BF |
2457 | readcount++; |
2458 | readbytes += nfsd4_max_reply(argp->rqstp, op); | |
2459 | } else | |
2460 | max_reply += nfsd4_max_reply(argp->rqstp, op); | |
f7b43d0c | 2461 | /* |
7323f0d2 KM |
2462 | * OP_LOCK and OP_LOCKT may return a conflicting lock. |
2463 | * (Special case because it will just skip encoding this | |
2464 | * if it runs out of xdr buffer space, and it is the only | |
2465 | * operation that behaves this way.) | |
f7b43d0c | 2466 | */ |
7323f0d2 | 2467 | if (op->opnum == OP_LOCK || op->opnum == OP_LOCKT) |
f7b43d0c | 2468 | max_reply += NFS4_OPAQUE_LIMIT; |
e372ba60 BF |
2469 | |
2470 | if (op->status) { | |
2471 | argp->opcnt = i+1; | |
2472 | break; | |
2473 | } | |
1da177e4 | 2474 | } |
1091006c BF |
2475 | /* Sessions make the DRC unnecessary: */ |
2476 | if (argp->minorversion) | |
2477 | cachethis = false; | |
b0e35fda | 2478 | svc_reserve(argp->rqstp, max_reply + readbytes); |
1091006c | 2479 | argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; |
1da177e4 | 2480 | |
a5cddc88 | 2481 | if (readcount > 1 || max_reply > PAGE_SIZE - auth_slack) |
779fb0f3 | 2482 | clear_bit(RQ_SPLICE_OK, &argp->rqstp->rq_flags); |
b0e35fda | 2483 | |
1da177e4 LT |
2484 | DECODE_TAIL; |
2485 | } | |
1da177e4 | 2486 | |
b8800921 N |
2487 | static __be32 *encode_change(__be32 *p, struct kstat *stat, struct inode *inode, |
2488 | struct svc_export *exp) | |
c654b8a9 | 2489 | { |
b8800921 N |
2490 | if (exp->ex_flags & NFSEXP_V4ROOT) { |
2491 | *p++ = cpu_to_be32(convert_to_wallclock(exp->cd->flush_time)); | |
2492 | *p++ = 0; | |
2493 | } else if (IS_I_VERSION(inode)) { | |
39ca1bf6 | 2494 | p = xdr_encode_hyper(p, nfsd4_change_attribute(stat, inode)); |
c654b8a9 | 2495 | } else { |
d05d5744 BF |
2496 | *p++ = cpu_to_be32(stat->ctime.tv_sec); |
2497 | *p++ = cpu_to_be32(stat->ctime.tv_nsec); | |
c654b8a9 | 2498 | } |
d05d5744 | 2499 | return p; |
c654b8a9 BF |
2500 | } |
2501 | ||
16945141 BF |
2502 | /* |
2503 | * ctime (in NFSv4, time_metadata) is not writeable, and the client | |
2504 | * doesn't really care what resolution could theoretically be stored by | |
2505 | * the filesystem. | |
2506 | * | |
2507 | * The client cares how close together changes can be while still | |
2508 | * guaranteeing ctime changes. For most filesystems (which have | |
2509 | * timestamps with nanosecond fields) that is limited by the resolution | |
2510 | * of the time returned from current_time() (which I'm assuming to be | |
2511 | * 1/HZ). | |
2512 | */ | |
2513 | static __be32 *encode_time_delta(__be32 *p, struct inode *inode) | |
2514 | { | |
e4598e38 | 2515 | struct timespec64 ts; |
16945141 BF |
2516 | u32 ns; |
2517 | ||
2518 | ns = max_t(u32, NSEC_PER_SEC/HZ, inode->i_sb->s_time_gran); | |
e4598e38 | 2519 | ts = ns_to_timespec64(ns); |
16945141 BF |
2520 | |
2521 | p = xdr_encode_hyper(p, ts.tv_sec); | |
2522 | *p++ = cpu_to_be32(ts.tv_nsec); | |
2523 | ||
2524 | return p; | |
2525 | } | |
2526 | ||
d05d5744 | 2527 | static __be32 *encode_cinfo(__be32 *p, struct nfsd4_change_info *c) |
c654b8a9 | 2528 | { |
d05d5744 | 2529 | *p++ = cpu_to_be32(c->atomic); |
c654b8a9 | 2530 | if (c->change_supported) { |
d05d5744 BF |
2531 | p = xdr_encode_hyper(p, c->before_change); |
2532 | p = xdr_encode_hyper(p, c->after_change); | |
c654b8a9 | 2533 | } else { |
d05d5744 BF |
2534 | *p++ = cpu_to_be32(c->before_ctime_sec); |
2535 | *p++ = cpu_to_be32(c->before_ctime_nsec); | |
2536 | *p++ = cpu_to_be32(c->after_ctime_sec); | |
2537 | *p++ = cpu_to_be32(c->after_ctime_nsec); | |
c654b8a9 | 2538 | } |
d05d5744 | 2539 | return p; |
c654b8a9 | 2540 | } |
1da177e4 | 2541 | |
81c3f413 | 2542 | /* Encode as an array of strings the string given with components |
e7a0444a | 2543 | * separated @sep, escaped with esc_enter and esc_exit. |
81c3f413 | 2544 | */ |
ddd1ea56 BF |
2545 | static __be32 nfsd4_encode_components_esc(struct xdr_stream *xdr, char sep, |
2546 | char *components, char esc_enter, | |
2547 | char esc_exit) | |
81c3f413 | 2548 | { |
ddd1ea56 | 2549 | __be32 *p; |
082d4bd7 BF |
2550 | __be32 pathlen; |
2551 | int pathlen_offset; | |
81c3f413 | 2552 | int strlen, count=0; |
e7a0444a | 2553 | char *str, *end, *next; |
81c3f413 BF |
2554 | |
2555 | dprintk("nfsd4_encode_components(%s)\n", components); | |
082d4bd7 BF |
2556 | |
2557 | pathlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
2558 | p = xdr_reserve_space(xdr, 4); |
2559 | if (!p) | |
81c3f413 | 2560 | return nfserr_resource; |
082d4bd7 BF |
2561 | p++; /* We will fill this in with @count later */ |
2562 | ||
81c3f413 BF |
2563 | end = str = components; |
2564 | while (*end) { | |
e7a0444a WAA |
2565 | bool found_esc = false; |
2566 | ||
2567 | /* try to parse as esc_start, ..., esc_end, sep */ | |
2568 | if (*str == esc_enter) { | |
2569 | for (; *end && (*end != esc_exit); end++) | |
2570 | /* find esc_exit or end of string */; | |
2571 | next = end + 1; | |
2572 | if (*end && (!*next || *next == sep)) { | |
2573 | str++; | |
2574 | found_esc = true; | |
2575 | } | |
2576 | } | |
2577 | ||
2578 | if (!found_esc) | |
2579 | for (; *end && (*end != sep); end++) | |
2580 | /* find sep or end of string */; | |
2581 | ||
81c3f413 BF |
2582 | strlen = end - str; |
2583 | if (strlen) { | |
ddd1ea56 BF |
2584 | p = xdr_reserve_space(xdr, strlen + 4); |
2585 | if (!p) | |
81c3f413 | 2586 | return nfserr_resource; |
0c0c267b | 2587 | p = xdr_encode_opaque(p, str, strlen); |
81c3f413 BF |
2588 | count++; |
2589 | } | |
2590 | else | |
2591 | end++; | |
5a64e569 BC |
2592 | if (found_esc) |
2593 | end = next; | |
2594 | ||
81c3f413 BF |
2595 | str = end; |
2596 | } | |
bf7491f1 | 2597 | pathlen = htonl(count); |
082d4bd7 | 2598 | write_bytes_to_xdr_buf(xdr->buf, pathlen_offset, &pathlen, 4); |
81c3f413 BF |
2599 | return 0; |
2600 | } | |
2601 | ||
e7a0444a WAA |
2602 | /* Encode as an array of strings the string given with components |
2603 | * separated @sep. | |
2604 | */ | |
ddd1ea56 BF |
2605 | static __be32 nfsd4_encode_components(struct xdr_stream *xdr, char sep, |
2606 | char *components) | |
e7a0444a | 2607 | { |
ddd1ea56 | 2608 | return nfsd4_encode_components_esc(xdr, sep, components, 0, 0); |
e7a0444a WAA |
2609 | } |
2610 | ||
81c3f413 BF |
2611 | /* |
2612 | * encode a location element of a fs_locations structure | |
2613 | */ | |
ddd1ea56 BF |
2614 | static __be32 nfsd4_encode_fs_location4(struct xdr_stream *xdr, |
2615 | struct nfsd4_fs_location *location) | |
81c3f413 | 2616 | { |
b37ad28b | 2617 | __be32 status; |
81c3f413 | 2618 | |
ddd1ea56 | 2619 | status = nfsd4_encode_components_esc(xdr, ':', location->hosts, |
e7a0444a | 2620 | '[', ']'); |
81c3f413 BF |
2621 | if (status) |
2622 | return status; | |
ddd1ea56 | 2623 | status = nfsd4_encode_components(xdr, '/', location->path); |
81c3f413 BF |
2624 | if (status) |
2625 | return status; | |
81c3f413 BF |
2626 | return 0; |
2627 | } | |
2628 | ||
2629 | /* | |
ed748aac | 2630 | * Encode a path in RFC3530 'pathname4' format |
81c3f413 | 2631 | */ |
ddd1ea56 BF |
2632 | static __be32 nfsd4_encode_path(struct xdr_stream *xdr, |
2633 | const struct path *root, | |
2634 | const struct path *path) | |
81c3f413 | 2635 | { |
301f0268 | 2636 | struct path cur = *path; |
ddd1ea56 | 2637 | __be32 *p; |
ed748aac TM |
2638 | struct dentry **components = NULL; |
2639 | unsigned int ncomponents = 0; | |
2640 | __be32 err = nfserr_jukebox; | |
81c3f413 | 2641 | |
ed748aac | 2642 | dprintk("nfsd4_encode_components("); |
81c3f413 | 2643 | |
ed748aac TM |
2644 | path_get(&cur); |
2645 | /* First walk the path up to the nfsd root, and store the | |
2646 | * dentries/path components in an array. | |
2647 | */ | |
2648 | for (;;) { | |
b77a4b2e | 2649 | if (path_equal(&cur, root)) |
ed748aac TM |
2650 | break; |
2651 | if (cur.dentry == cur.mnt->mnt_root) { | |
2652 | if (follow_up(&cur)) | |
2653 | continue; | |
2654 | goto out_free; | |
2655 | } | |
2656 | if ((ncomponents & 15) == 0) { | |
2657 | struct dentry **new; | |
2658 | new = krealloc(components, | |
2659 | sizeof(*new) * (ncomponents + 16), | |
2660 | GFP_KERNEL); | |
2661 | if (!new) | |
2662 | goto out_free; | |
2663 | components = new; | |
2664 | } | |
2665 | components[ncomponents++] = cur.dentry; | |
2666 | cur.dentry = dget_parent(cur.dentry); | |
2667 | } | |
ddd1ea56 BF |
2668 | err = nfserr_resource; |
2669 | p = xdr_reserve_space(xdr, 4); | |
2670 | if (!p) | |
ed748aac | 2671 | goto out_free; |
c373b0a4 | 2672 | *p++ = cpu_to_be32(ncomponents); |
ed748aac TM |
2673 | |
2674 | while (ncomponents) { | |
2675 | struct dentry *dentry = components[ncomponents - 1]; | |
301f0268 | 2676 | unsigned int len; |
ed748aac | 2677 | |
301f0268 AV |
2678 | spin_lock(&dentry->d_lock); |
2679 | len = dentry->d_name.len; | |
ddd1ea56 BF |
2680 | p = xdr_reserve_space(xdr, len + 4); |
2681 | if (!p) { | |
301f0268 | 2682 | spin_unlock(&dentry->d_lock); |
ed748aac | 2683 | goto out_free; |
301f0268 | 2684 | } |
0c0c267b | 2685 | p = xdr_encode_opaque(p, dentry->d_name.name, len); |
a455589f | 2686 | dprintk("/%pd", dentry); |
301f0268 | 2687 | spin_unlock(&dentry->d_lock); |
ed748aac TM |
2688 | dput(dentry); |
2689 | ncomponents--; | |
81c3f413 | 2690 | } |
ed748aac | 2691 | |
ed748aac TM |
2692 | err = 0; |
2693 | out_free: | |
2694 | dprintk(")\n"); | |
2695 | while (ncomponents) | |
2696 | dput(components[--ncomponents]); | |
2697 | kfree(components); | |
2698 | path_put(&cur); | |
2699 | return err; | |
2700 | } | |
2701 | ||
ddd1ea56 BF |
2702 | static __be32 nfsd4_encode_fsloc_fsroot(struct xdr_stream *xdr, |
2703 | struct svc_rqst *rqstp, const struct path *path) | |
ed748aac TM |
2704 | { |
2705 | struct svc_export *exp_ps; | |
2706 | __be32 res; | |
2707 | ||
2708 | exp_ps = rqst_find_fsidzero_export(rqstp); | |
2709 | if (IS_ERR(exp_ps)) | |
2710 | return nfserrno(PTR_ERR(exp_ps)); | |
ddd1ea56 | 2711 | res = nfsd4_encode_path(xdr, &exp_ps->ex_path, path); |
ed748aac TM |
2712 | exp_put(exp_ps); |
2713 | return res; | |
81c3f413 BF |
2714 | } |
2715 | ||
2716 | /* | |
2717 | * encode a fs_locations structure | |
2718 | */ | |
ddd1ea56 BF |
2719 | static __be32 nfsd4_encode_fs_locations(struct xdr_stream *xdr, |
2720 | struct svc_rqst *rqstp, struct svc_export *exp) | |
81c3f413 | 2721 | { |
b37ad28b | 2722 | __be32 status; |
cc45f017 | 2723 | int i; |
ddd1ea56 | 2724 | __be32 *p; |
81c3f413 | 2725 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
81c3f413 | 2726 | |
ddd1ea56 | 2727 | status = nfsd4_encode_fsloc_fsroot(xdr, rqstp, &exp->ex_path); |
81c3f413 BF |
2728 | if (status) |
2729 | return status; | |
ddd1ea56 BF |
2730 | p = xdr_reserve_space(xdr, 4); |
2731 | if (!p) | |
81c3f413 | 2732 | return nfserr_resource; |
c373b0a4 | 2733 | *p++ = cpu_to_be32(fslocs->locations_count); |
81c3f413 | 2734 | for (i=0; i<fslocs->locations_count; i++) { |
ddd1ea56 | 2735 | status = nfsd4_encode_fs_location4(xdr, &fslocs->locations[i]); |
81c3f413 BF |
2736 | if (status) |
2737 | return status; | |
2738 | } | |
81c3f413 BF |
2739 | return 0; |
2740 | } | |
1da177e4 | 2741 | |
3d2544b1 BF |
2742 | static u32 nfs4_file_type(umode_t mode) |
2743 | { | |
2744 | switch (mode & S_IFMT) { | |
2745 | case S_IFIFO: return NF4FIFO; | |
2746 | case S_IFCHR: return NF4CHR; | |
2747 | case S_IFDIR: return NF4DIR; | |
2748 | case S_IFBLK: return NF4BLK; | |
2749 | case S_IFLNK: return NF4LNK; | |
2750 | case S_IFREG: return NF4REG; | |
2751 | case S_IFSOCK: return NF4SOCK; | |
2752 | default: return NF4BAD; | |
25fef48b | 2753 | } |
3d2544b1 | 2754 | } |
1da177e4 | 2755 | |
b37ad28b | 2756 | static inline __be32 |
ddd1ea56 BF |
2757 | nfsd4_encode_aclname(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2758 | struct nfs4_ace *ace) | |
1da177e4 | 2759 | { |
3554116d | 2760 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
ddd1ea56 | 2761 | return nfs4_acl_write_who(xdr, ace->whotype); |
3554116d | 2762 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
ddd1ea56 | 2763 | return nfsd4_encode_group(xdr, rqstp, ace->who_gid); |
3554116d | 2764 | else |
ddd1ea56 | 2765 | return nfsd4_encode_user(xdr, rqstp, ace->who_uid); |
1da177e4 LT |
2766 | } |
2767 | ||
6896f15a | 2768 | static inline __be32 |
8a4c3926 | 2769 | nfsd4_encode_layout_types(struct xdr_stream *xdr, u32 layout_types) |
6896f15a | 2770 | { |
8a4c3926 JL |
2771 | __be32 *p; |
2772 | unsigned long i = hweight_long(layout_types); | |
6896f15a | 2773 | |
8a4c3926 JL |
2774 | p = xdr_reserve_space(xdr, 4 + 4 * i); |
2775 | if (!p) | |
2776 | return nfserr_resource; | |
2777 | ||
2778 | *p++ = cpu_to_be32(i); | |
2779 | ||
2780 | for (i = LAYOUT_NFSV4_1_FILES; i < LAYOUT_TYPE_MAX; ++i) | |
2781 | if (layout_types & (1 << i)) | |
2782 | *p++ = cpu_to_be32(i); | |
6896f15a KM |
2783 | |
2784 | return 0; | |
2785 | } | |
2786 | ||
42ca0993 BF |
2787 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
2788 | FATTR4_WORD0_RDATTR_ERROR) | |
2789 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID | |
c2227a39 | 2790 | #define WORD2_ABSENT_FS_ATTRS 0 |
42ca0993 | 2791 | |
18032ca0 DQ |
2792 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
2793 | static inline __be32 | |
ddd1ea56 BF |
2794 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2795 | void *context, int len) | |
18032ca0 | 2796 | { |
ddd1ea56 | 2797 | __be32 *p; |
18032ca0 | 2798 | |
ddd1ea56 BF |
2799 | p = xdr_reserve_space(xdr, len + 4 + 4 + 4); |
2800 | if (!p) | |
18032ca0 DQ |
2801 | return nfserr_resource; |
2802 | ||
2803 | /* | |
2804 | * For now we use a 0 here to indicate the null translation; in | |
2805 | * the future we may place a call to translation code here. | |
2806 | */ | |
c373b0a4 BF |
2807 | *p++ = cpu_to_be32(0); /* lfs */ |
2808 | *p++ = cpu_to_be32(0); /* pi */ | |
18032ca0 | 2809 | p = xdr_encode_opaque(p, context, len); |
18032ca0 DQ |
2810 | return 0; |
2811 | } | |
2812 | #else | |
2813 | static inline __be32 | |
ddd1ea56 BF |
2814 | nfsd4_encode_security_label(struct xdr_stream *xdr, struct svc_rqst *rqstp, |
2815 | void *context, int len) | |
18032ca0 DQ |
2816 | { return 0; } |
2817 | #endif | |
2818 | ||
c2227a39 | 2819 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *bmval2, u32 *rdattr_err) |
42ca0993 BF |
2820 | { |
2821 | /* As per referral draft: */ | |
2822 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || | |
2823 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { | |
2824 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || | |
2825 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) | |
2826 | *rdattr_err = NFSERR_MOVED; | |
2827 | else | |
2828 | return nfserr_moved; | |
2829 | } | |
2830 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; | |
2831 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; | |
c2227a39 | 2832 | *bmval2 &= WORD2_ABSENT_FS_ATTRS; |
42ca0993 BF |
2833 | return 0; |
2834 | } | |
1da177e4 | 2835 | |
ae7095a7 BF |
2836 | |
2837 | static int get_parent_attributes(struct svc_export *exp, struct kstat *stat) | |
2838 | { | |
2839 | struct path path = exp->ex_path; | |
2840 | int err; | |
2841 | ||
2842 | path_get(&path); | |
2843 | while (follow_up(&path)) { | |
2844 | if (path.dentry != path.mnt->mnt_root) | |
2845 | break; | |
2846 | } | |
a528d35e | 2847 | err = vfs_getattr(&path, stat, STATX_BASIC_STATS, AT_STATX_SYNC_AS_STAT); |
ae7095a7 BF |
2848 | path_put(&path); |
2849 | return err; | |
2850 | } | |
2851 | ||
75976de6 KM |
2852 | static __be32 |
2853 | nfsd4_encode_bitmap(struct xdr_stream *xdr, u32 bmval0, u32 bmval1, u32 bmval2) | |
2854 | { | |
2855 | __be32 *p; | |
2856 | ||
2857 | if (bmval2) { | |
2858 | p = xdr_reserve_space(xdr, 16); | |
2859 | if (!p) | |
2860 | goto out_resource; | |
2861 | *p++ = cpu_to_be32(3); | |
2862 | *p++ = cpu_to_be32(bmval0); | |
2863 | *p++ = cpu_to_be32(bmval1); | |
2864 | *p++ = cpu_to_be32(bmval2); | |
2865 | } else if (bmval1) { | |
2866 | p = xdr_reserve_space(xdr, 12); | |
2867 | if (!p) | |
2868 | goto out_resource; | |
2869 | *p++ = cpu_to_be32(2); | |
2870 | *p++ = cpu_to_be32(bmval0); | |
2871 | *p++ = cpu_to_be32(bmval1); | |
2872 | } else { | |
2873 | p = xdr_reserve_space(xdr, 8); | |
2874 | if (!p) | |
2875 | goto out_resource; | |
2876 | *p++ = cpu_to_be32(1); | |
2877 | *p++ = cpu_to_be32(bmval0); | |
2878 | } | |
2879 | ||
2880 | return 0; | |
2881 | out_resource: | |
2882 | return nfserr_resource; | |
2883 | } | |
2884 | ||
1da177e4 LT |
2885 | /* |
2886 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle | |
2887 | * ourselves. | |
1da177e4 | 2888 | */ |
da2ebce6 | 2889 | static __be32 |
d5184658 BF |
2890 | nfsd4_encode_fattr(struct xdr_stream *xdr, struct svc_fh *fhp, |
2891 | struct svc_export *exp, | |
2892 | struct dentry *dentry, u32 *bmval, | |
406a7ea9 | 2893 | struct svc_rqst *rqstp, int ignore_crossmnt) |
1da177e4 LT |
2894 | { |
2895 | u32 bmval0 = bmval[0]; | |
2896 | u32 bmval1 = bmval[1]; | |
7e705706 | 2897 | u32 bmval2 = bmval[2]; |
1da177e4 | 2898 | struct kstat stat; |
d50e6136 | 2899 | struct svc_fh *tempfh = NULL; |
1da177e4 | 2900 | struct kstatfs statfs; |
ddd1ea56 | 2901 | __be32 *p; |
1fcea5b2 | 2902 | int starting_len = xdr->buf->len; |
082d4bd7 BF |
2903 | int attrlen_offset; |
2904 | __be32 attrlen; | |
1da177e4 LT |
2905 | u32 dummy; |
2906 | u64 dummy64; | |
42ca0993 | 2907 | u32 rdattr_err = 0; |
b37ad28b | 2908 | __be32 status; |
b8dd7b9a | 2909 | int err; |
1da177e4 | 2910 | struct nfs4_acl *acl = NULL; |
0ab88ca4 | 2911 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
18032ca0 DQ |
2912 | void *context = NULL; |
2913 | int contextlen; | |
0ab88ca4 | 2914 | #endif |
18032ca0 | 2915 | bool contextsupport = false; |
7e705706 AA |
2916 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
2917 | u32 minorversion = resp->cstate.minorversion; | |
ebabe9a9 CH |
2918 | struct path path = { |
2919 | .mnt = exp->ex_path.mnt, | |
2920 | .dentry = dentry, | |
2921 | }; | |
3d733711 | 2922 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
1da177e4 LT |
2923 | |
2924 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); | |
916d2d84 | 2925 | BUG_ON(!nfsd_attrs_supported(minorversion, bmval)); |
1da177e4 | 2926 | |
42ca0993 | 2927 | if (exp->ex_fslocs.migrated) { |
c2227a39 | 2928 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &bmval2, &rdattr_err); |
42ca0993 BF |
2929 | if (status) |
2930 | goto out; | |
2931 | } | |
2932 | ||
a528d35e | 2933 | err = vfs_getattr(&path, &stat, STATX_BASIC_STATS, AT_STATX_SYNC_AS_STAT); |
b8dd7b9a | 2934 | if (err) |
1da177e4 | 2935 | goto out_nfserr; |
12337901 CH |
2936 | if ((bmval0 & (FATTR4_WORD0_FILES_AVAIL | FATTR4_WORD0_FILES_FREE | |
2937 | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_MAXNAME)) || | |
1da177e4 LT |
2938 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
2939 | FATTR4_WORD1_SPACE_TOTAL))) { | |
ebabe9a9 | 2940 | err = vfs_statfs(&path, &statfs); |
b8dd7b9a | 2941 | if (err) |
1da177e4 LT |
2942 | goto out_nfserr; |
2943 | } | |
2944 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { | |
d50e6136 BF |
2945 | tempfh = kmalloc(sizeof(struct svc_fh), GFP_KERNEL); |
2946 | status = nfserr_jukebox; | |
2947 | if (!tempfh) | |
2948 | goto out; | |
2949 | fh_init(tempfh, NFS4_FHSIZE); | |
2950 | status = fh_compose(tempfh, exp, dentry, NULL); | |
1da177e4 LT |
2951 | if (status) |
2952 | goto out; | |
d50e6136 | 2953 | fhp = tempfh; |
1da177e4 | 2954 | } |
0c9d65e7 | 2955 | if (bmval0 & FATTR4_WORD0_ACL) { |
b8dd7b9a | 2956 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
0c9d65e7 AG |
2957 | if (err == -EOPNOTSUPP) |
2958 | bmval0 &= ~FATTR4_WORD0_ACL; | |
2959 | else if (err == -EINVAL) { | |
2960 | status = nfserr_attrnotsupp; | |
2961 | goto out; | |
2962 | } else if (err != 0) | |
2963 | goto out_nfserr; | |
1da177e4 | 2964 | } |
1da177e4 | 2965 | |
18032ca0 | 2966 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
c2227a39 KM |
2967 | if ((bmval2 & FATTR4_WORD2_SECURITY_LABEL) || |
2968 | bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
32ddd944 BF |
2969 | if (exp->ex_flags & NFSEXP_SECURITY_LABEL) |
2970 | err = security_inode_getsecctx(d_inode(dentry), | |
18032ca0 | 2971 | &context, &contextlen); |
32ddd944 BF |
2972 | else |
2973 | err = -EOPNOTSUPP; | |
18032ca0 DQ |
2974 | contextsupport = (err == 0); |
2975 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { | |
2976 | if (err == -EOPNOTSUPP) | |
2977 | bmval2 &= ~FATTR4_WORD2_SECURITY_LABEL; | |
2978 | else if (err) | |
2979 | goto out_nfserr; | |
2980 | } | |
2981 | } | |
2982 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ | |
2983 | ||
75976de6 KM |
2984 | status = nfsd4_encode_bitmap(xdr, bmval0, bmval1, bmval2); |
2985 | if (status) | |
2986 | goto out; | |
082d4bd7 BF |
2987 | |
2988 | attrlen_offset = xdr->buf->len; | |
ddd1ea56 BF |
2989 | p = xdr_reserve_space(xdr, 4); |
2990 | if (!p) | |
2991 | goto out_resource; | |
082d4bd7 | 2992 | p++; /* to be backfilled later */ |
1da177e4 LT |
2993 | |
2994 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { | |
dcd20869 BF |
2995 | u32 supp[3]; |
2996 | ||
2997 | memcpy(supp, nfsd_suppattrs[minorversion], sizeof(supp)); | |
7e705706 | 2998 | |
0c9d65e7 | 2999 | if (!IS_POSIXACL(dentry->d_inode)) |
916d2d84 | 3000 | supp[0] &= ~FATTR4_WORD0_ACL; |
18032ca0 | 3001 | if (!contextsupport) |
916d2d84 BF |
3002 | supp[2] &= ~FATTR4_WORD2_SECURITY_LABEL; |
3003 | if (!supp[2]) { | |
ddd1ea56 BF |
3004 | p = xdr_reserve_space(xdr, 12); |
3005 | if (!p) | |
2b44f1ba | 3006 | goto out_resource; |
c373b0a4 | 3007 | *p++ = cpu_to_be32(2); |
916d2d84 BF |
3008 | *p++ = cpu_to_be32(supp[0]); |
3009 | *p++ = cpu_to_be32(supp[1]); | |
7e705706 | 3010 | } else { |
ddd1ea56 BF |
3011 | p = xdr_reserve_space(xdr, 16); |
3012 | if (!p) | |
2b44f1ba | 3013 | goto out_resource; |
c373b0a4 | 3014 | *p++ = cpu_to_be32(3); |
916d2d84 BF |
3015 | *p++ = cpu_to_be32(supp[0]); |
3016 | *p++ = cpu_to_be32(supp[1]); | |
3017 | *p++ = cpu_to_be32(supp[2]); | |
7e705706 | 3018 | } |
1da177e4 LT |
3019 | } |
3020 | if (bmval0 & FATTR4_WORD0_TYPE) { | |
ddd1ea56 BF |
3021 | p = xdr_reserve_space(xdr, 4); |
3022 | if (!p) | |
1da177e4 | 3023 | goto out_resource; |
3d2544b1 | 3024 | dummy = nfs4_file_type(stat.mode); |
6b6d8137 BF |
3025 | if (dummy == NF4BAD) { |
3026 | status = nfserr_serverfault; | |
3027 | goto out; | |
3028 | } | |
c373b0a4 | 3029 | *p++ = cpu_to_be32(dummy); |
1da177e4 LT |
3030 | } |
3031 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { | |
ddd1ea56 BF |
3032 | p = xdr_reserve_space(xdr, 4); |
3033 | if (!p) | |
1da177e4 | 3034 | goto out_resource; |
49640001 | 3035 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
c373b0a4 | 3036 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT); |
49640001 | 3037 | else |
c373b0a4 BF |
3038 | *p++ = cpu_to_be32(NFS4_FH_PERSISTENT| |
3039 | NFS4_FH_VOL_RENAME); | |
1da177e4 LT |
3040 | } |
3041 | if (bmval0 & FATTR4_WORD0_CHANGE) { | |
ddd1ea56 BF |
3042 | p = xdr_reserve_space(xdr, 8); |
3043 | if (!p) | |
1da177e4 | 3044 | goto out_resource; |
b8800921 | 3045 | p = encode_change(p, &stat, d_inode(dentry), exp); |
1da177e4 LT |
3046 | } |
3047 | if (bmval0 & FATTR4_WORD0_SIZE) { | |
ddd1ea56 BF |
3048 | p = xdr_reserve_space(xdr, 8); |
3049 | if (!p) | |
1da177e4 | 3050 | goto out_resource; |
b64c7f3b | 3051 | p = xdr_encode_hyper(p, stat.size); |
1da177e4 LT |
3052 | } |
3053 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { | |
ddd1ea56 BF |
3054 | p = xdr_reserve_space(xdr, 4); |
3055 | if (!p) | |
1da177e4 | 3056 | goto out_resource; |
c373b0a4 | 3057 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
3058 | } |
3059 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { | |
ddd1ea56 BF |
3060 | p = xdr_reserve_space(xdr, 4); |
3061 | if (!p) | |
1da177e4 | 3062 | goto out_resource; |
c373b0a4 | 3063 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
3064 | } |
3065 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { | |
ddd1ea56 BF |
3066 | p = xdr_reserve_space(xdr, 4); |
3067 | if (!p) | |
1da177e4 | 3068 | goto out_resource; |
c373b0a4 | 3069 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
3070 | } |
3071 | if (bmval0 & FATTR4_WORD0_FSID) { | |
ddd1ea56 BF |
3072 | p = xdr_reserve_space(xdr, 16); |
3073 | if (!p) | |
1da177e4 | 3074 | goto out_resource; |
42ca0993 | 3075 | if (exp->ex_fslocs.migrated) { |
b64c7f3b BF |
3076 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MAJOR); |
3077 | p = xdr_encode_hyper(p, NFS4_REFERRAL_FSID_MINOR); | |
af6a4e28 N |
3078 | } else switch(fsid_source(fhp)) { |
3079 | case FSIDSOURCE_FSID: | |
b64c7f3b BF |
3080 | p = xdr_encode_hyper(p, (u64)exp->ex_fsid); |
3081 | p = xdr_encode_hyper(p, (u64)0); | |
af6a4e28 N |
3082 | break; |
3083 | case FSIDSOURCE_DEV: | |
c373b0a4 BF |
3084 | *p++ = cpu_to_be32(0); |
3085 | *p++ = cpu_to_be32(MAJOR(stat.dev)); | |
3086 | *p++ = cpu_to_be32(0); | |
3087 | *p++ = cpu_to_be32(MINOR(stat.dev)); | |
af6a4e28 N |
3088 | break; |
3089 | case FSIDSOURCE_UUID: | |
94eb3689 KM |
3090 | p = xdr_encode_opaque_fixed(p, exp->ex_uuid, |
3091 | EX_UUID_LEN); | |
af6a4e28 | 3092 | break; |
1da177e4 LT |
3093 | } |
3094 | } | |
3095 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { | |
ddd1ea56 BF |
3096 | p = xdr_reserve_space(xdr, 4); |
3097 | if (!p) | |
1da177e4 | 3098 | goto out_resource; |
c373b0a4 | 3099 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
3100 | } |
3101 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { | |
ddd1ea56 BF |
3102 | p = xdr_reserve_space(xdr, 4); |
3103 | if (!p) | |
1da177e4 | 3104 | goto out_resource; |
c373b0a4 | 3105 | *p++ = cpu_to_be32(nn->nfsd4_lease); |
1da177e4 LT |
3106 | } |
3107 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { | |
ddd1ea56 BF |
3108 | p = xdr_reserve_space(xdr, 4); |
3109 | if (!p) | |
1da177e4 | 3110 | goto out_resource; |
c373b0a4 | 3111 | *p++ = cpu_to_be32(rdattr_err); |
1da177e4 LT |
3112 | } |
3113 | if (bmval0 & FATTR4_WORD0_ACL) { | |
3114 | struct nfs4_ace *ace; | |
1da177e4 LT |
3115 | |
3116 | if (acl == NULL) { | |
ddd1ea56 BF |
3117 | p = xdr_reserve_space(xdr, 4); |
3118 | if (!p) | |
1da177e4 LT |
3119 | goto out_resource; |
3120 | ||
c373b0a4 | 3121 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
3122 | goto out_acl; |
3123 | } | |
ddd1ea56 BF |
3124 | p = xdr_reserve_space(xdr, 4); |
3125 | if (!p) | |
1da177e4 | 3126 | goto out_resource; |
c373b0a4 | 3127 | *p++ = cpu_to_be32(acl->naces); |
1da177e4 | 3128 | |
28e05dd8 | 3129 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
ddd1ea56 BF |
3130 | p = xdr_reserve_space(xdr, 4*3); |
3131 | if (!p) | |
1da177e4 | 3132 | goto out_resource; |
c373b0a4 BF |
3133 | *p++ = cpu_to_be32(ace->type); |
3134 | *p++ = cpu_to_be32(ace->flag); | |
3135 | *p++ = cpu_to_be32(ace->access_mask & | |
3136 | NFS4_ACE_MASK_ALL); | |
ddd1ea56 | 3137 | status = nfsd4_encode_aclname(xdr, rqstp, ace); |
1da177e4 LT |
3138 | if (status) |
3139 | goto out; | |
3140 | } | |
3141 | } | |
3142 | out_acl: | |
3143 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { | |
ddd1ea56 BF |
3144 | p = xdr_reserve_space(xdr, 4); |
3145 | if (!p) | |
1da177e4 | 3146 | goto out_resource; |
0c9d65e7 | 3147 | *p++ = cpu_to_be32(IS_POSIXACL(dentry->d_inode) ? |
1da177e4 LT |
3148 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); |
3149 | } | |
3150 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { | |
ddd1ea56 BF |
3151 | p = xdr_reserve_space(xdr, 4); |
3152 | if (!p) | |
1da177e4 | 3153 | goto out_resource; |
c373b0a4 | 3154 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
3155 | } |
3156 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { | |
ddd1ea56 BF |
3157 | p = xdr_reserve_space(xdr, 4); |
3158 | if (!p) | |
1da177e4 | 3159 | goto out_resource; |
c373b0a4 | 3160 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
3161 | } |
3162 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { | |
ddd1ea56 BF |
3163 | p = xdr_reserve_space(xdr, 4); |
3164 | if (!p) | |
1da177e4 | 3165 | goto out_resource; |
c373b0a4 | 3166 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
3167 | } |
3168 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { | |
ddd1ea56 BF |
3169 | p = xdr_reserve_space(xdr, 4); |
3170 | if (!p) | |
1da177e4 | 3171 | goto out_resource; |
c373b0a4 | 3172 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
3173 | } |
3174 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { | |
ddd1ea56 BF |
3175 | p = xdr_reserve_space(xdr, fhp->fh_handle.fh_size + 4); |
3176 | if (!p) | |
1da177e4 | 3177 | goto out_resource; |
0c0c267b BF |
3178 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, |
3179 | fhp->fh_handle.fh_size); | |
1da177e4 LT |
3180 | } |
3181 | if (bmval0 & FATTR4_WORD0_FILEID) { | |
ddd1ea56 BF |
3182 | p = xdr_reserve_space(xdr, 8); |
3183 | if (!p) | |
1da177e4 | 3184 | goto out_resource; |
b64c7f3b | 3185 | p = xdr_encode_hyper(p, stat.ino); |
1da177e4 LT |
3186 | } |
3187 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { | |
ddd1ea56 BF |
3188 | p = xdr_reserve_space(xdr, 8); |
3189 | if (!p) | |
1da177e4 | 3190 | goto out_resource; |
b64c7f3b | 3191 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
3192 | } |
3193 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { | |
ddd1ea56 BF |
3194 | p = xdr_reserve_space(xdr, 8); |
3195 | if (!p) | |
1da177e4 | 3196 | goto out_resource; |
b64c7f3b | 3197 | p = xdr_encode_hyper(p, (u64) statfs.f_ffree); |
1da177e4 LT |
3198 | } |
3199 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { | |
ddd1ea56 BF |
3200 | p = xdr_reserve_space(xdr, 8); |
3201 | if (!p) | |
1da177e4 | 3202 | goto out_resource; |
b64c7f3b | 3203 | p = xdr_encode_hyper(p, (u64) statfs.f_files); |
1da177e4 | 3204 | } |
81c3f413 | 3205 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
ddd1ea56 | 3206 | status = nfsd4_encode_fs_locations(xdr, rqstp, exp); |
81c3f413 BF |
3207 | if (status) |
3208 | goto out; | |
3209 | } | |
1da177e4 | 3210 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
ddd1ea56 BF |
3211 | p = xdr_reserve_space(xdr, 4); |
3212 | if (!p) | |
1da177e4 | 3213 | goto out_resource; |
c373b0a4 | 3214 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
3215 | } |
3216 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { | |
ddd1ea56 BF |
3217 | p = xdr_reserve_space(xdr, 8); |
3218 | if (!p) | |
1da177e4 | 3219 | goto out_resource; |
b64c7f3b | 3220 | p = xdr_encode_hyper(p, exp->ex_path.mnt->mnt_sb->s_maxbytes); |
1da177e4 LT |
3221 | } |
3222 | if (bmval0 & FATTR4_WORD0_MAXLINK) { | |
ddd1ea56 BF |
3223 | p = xdr_reserve_space(xdr, 4); |
3224 | if (!p) | |
1da177e4 | 3225 | goto out_resource; |
c373b0a4 | 3226 | *p++ = cpu_to_be32(255); |
1da177e4 LT |
3227 | } |
3228 | if (bmval0 & FATTR4_WORD0_MAXNAME) { | |
ddd1ea56 BF |
3229 | p = xdr_reserve_space(xdr, 4); |
3230 | if (!p) | |
1da177e4 | 3231 | goto out_resource; |
c373b0a4 | 3232 | *p++ = cpu_to_be32(statfs.f_namelen); |
1da177e4 LT |
3233 | } |
3234 | if (bmval0 & FATTR4_WORD0_MAXREAD) { | |
ddd1ea56 BF |
3235 | p = xdr_reserve_space(xdr, 8); |
3236 | if (!p) | |
1da177e4 | 3237 | goto out_resource; |
b64c7f3b | 3238 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
3239 | } |
3240 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { | |
ddd1ea56 BF |
3241 | p = xdr_reserve_space(xdr, 8); |
3242 | if (!p) | |
1da177e4 | 3243 | goto out_resource; |
b64c7f3b | 3244 | p = xdr_encode_hyper(p, (u64) svc_max_payload(rqstp)); |
1da177e4 LT |
3245 | } |
3246 | if (bmval1 & FATTR4_WORD1_MODE) { | |
ddd1ea56 BF |
3247 | p = xdr_reserve_space(xdr, 4); |
3248 | if (!p) | |
1da177e4 | 3249 | goto out_resource; |
c373b0a4 | 3250 | *p++ = cpu_to_be32(stat.mode & S_IALLUGO); |
1da177e4 LT |
3251 | } |
3252 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { | |
ddd1ea56 BF |
3253 | p = xdr_reserve_space(xdr, 4); |
3254 | if (!p) | |
1da177e4 | 3255 | goto out_resource; |
c373b0a4 | 3256 | *p++ = cpu_to_be32(1); |
1da177e4 LT |
3257 | } |
3258 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { | |
ddd1ea56 BF |
3259 | p = xdr_reserve_space(xdr, 4); |
3260 | if (!p) | |
1da177e4 | 3261 | goto out_resource; |
c373b0a4 | 3262 | *p++ = cpu_to_be32(stat.nlink); |
1da177e4 LT |
3263 | } |
3264 | if (bmval1 & FATTR4_WORD1_OWNER) { | |
ddd1ea56 | 3265 | status = nfsd4_encode_user(xdr, rqstp, stat.uid); |
1da177e4 LT |
3266 | if (status) |
3267 | goto out; | |
3268 | } | |
3269 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { | |
ddd1ea56 | 3270 | status = nfsd4_encode_group(xdr, rqstp, stat.gid); |
1da177e4 LT |
3271 | if (status) |
3272 | goto out; | |
3273 | } | |
3274 | if (bmval1 & FATTR4_WORD1_RAWDEV) { | |
ddd1ea56 BF |
3275 | p = xdr_reserve_space(xdr, 8); |
3276 | if (!p) | |
1da177e4 | 3277 | goto out_resource; |
c373b0a4 BF |
3278 | *p++ = cpu_to_be32((u32) MAJOR(stat.rdev)); |
3279 | *p++ = cpu_to_be32((u32) MINOR(stat.rdev)); | |
1da177e4 LT |
3280 | } |
3281 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { | |
ddd1ea56 BF |
3282 | p = xdr_reserve_space(xdr, 8); |
3283 | if (!p) | |
1da177e4 LT |
3284 | goto out_resource; |
3285 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; | |
b64c7f3b | 3286 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
3287 | } |
3288 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { | |
ddd1ea56 BF |
3289 | p = xdr_reserve_space(xdr, 8); |
3290 | if (!p) | |
1da177e4 LT |
3291 | goto out_resource; |
3292 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; | |
b64c7f3b | 3293 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
3294 | } |
3295 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { | |
ddd1ea56 BF |
3296 | p = xdr_reserve_space(xdr, 8); |
3297 | if (!p) | |
1da177e4 LT |
3298 | goto out_resource; |
3299 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; | |
b64c7f3b | 3300 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
3301 | } |
3302 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { | |
ddd1ea56 BF |
3303 | p = xdr_reserve_space(xdr, 8); |
3304 | if (!p) | |
1da177e4 LT |
3305 | goto out_resource; |
3306 | dummy64 = (u64)stat.blocks << 9; | |
b64c7f3b | 3307 | p = xdr_encode_hyper(p, dummy64); |
1da177e4 LT |
3308 | } |
3309 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { | |
ddd1ea56 BF |
3310 | p = xdr_reserve_space(xdr, 12); |
3311 | if (!p) | |
1da177e4 | 3312 | goto out_resource; |
b64c7f3b | 3313 | p = xdr_encode_hyper(p, (s64)stat.atime.tv_sec); |
c373b0a4 | 3314 | *p++ = cpu_to_be32(stat.atime.tv_nsec); |
1da177e4 LT |
3315 | } |
3316 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { | |
ddd1ea56 BF |
3317 | p = xdr_reserve_space(xdr, 12); |
3318 | if (!p) | |
1da177e4 | 3319 | goto out_resource; |
16945141 | 3320 | p = encode_time_delta(p, d_inode(dentry)); |
1da177e4 LT |
3321 | } |
3322 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { | |
ddd1ea56 BF |
3323 | p = xdr_reserve_space(xdr, 12); |
3324 | if (!p) | |
1da177e4 | 3325 | goto out_resource; |
b64c7f3b | 3326 | p = xdr_encode_hyper(p, (s64)stat.ctime.tv_sec); |
c373b0a4 | 3327 | *p++ = cpu_to_be32(stat.ctime.tv_nsec); |
1da177e4 LT |
3328 | } |
3329 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { | |
ddd1ea56 BF |
3330 | p = xdr_reserve_space(xdr, 12); |
3331 | if (!p) | |
1da177e4 | 3332 | goto out_resource; |
b64c7f3b | 3333 | p = xdr_encode_hyper(p, (s64)stat.mtime.tv_sec); |
c373b0a4 | 3334 | *p++ = cpu_to_be32(stat.mtime.tv_nsec); |
1da177e4 LT |
3335 | } |
3336 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
0a2050d7 KM |
3337 | struct kstat parent_stat; |
3338 | u64 ino = stat.ino; | |
3339 | ||
ddd1ea56 BF |
3340 | p = xdr_reserve_space(xdr, 8); |
3341 | if (!p) | |
1da177e4 | 3342 | goto out_resource; |
406a7ea9 FF |
3343 | /* |
3344 | * Get parent's attributes if not ignoring crossmount | |
3345 | * and this is the root of a cross-mounted filesystem. | |
3346 | */ | |
3347 | if (ignore_crossmnt == 0 && | |
0a2050d7 KM |
3348 | dentry == exp->ex_path.mnt->mnt_root) { |
3349 | err = get_parent_attributes(exp, &parent_stat); | |
3350 | if (err) | |
3351 | goto out_nfserr; | |
3352 | ino = parent_stat.ino; | |
3353 | } | |
3354 | p = xdr_encode_hyper(p, ino); | |
1da177e4 | 3355 | } |
9cf514cc | 3356 | #ifdef CONFIG_NFSD_PNFS |
6896f15a | 3357 | if (bmval1 & FATTR4_WORD1_FS_LAYOUT_TYPES) { |
8a4c3926 | 3358 | status = nfsd4_encode_layout_types(xdr, exp->ex_layout_types); |
6896f15a KM |
3359 | if (status) |
3360 | goto out; | |
3361 | } | |
3362 | ||
3363 | if (bmval2 & FATTR4_WORD2_LAYOUT_TYPES) { | |
8a4c3926 | 3364 | status = nfsd4_encode_layout_types(xdr, exp->ex_layout_types); |
6896f15a KM |
3365 | if (status) |
3366 | goto out; | |
9cf514cc CH |
3367 | } |
3368 | ||
3369 | if (bmval2 & FATTR4_WORD2_LAYOUT_BLKSIZE) { | |
3370 | p = xdr_reserve_space(xdr, 4); | |
3371 | if (!p) | |
3372 | goto out_resource; | |
3373 | *p++ = cpu_to_be32(stat.blksize); | |
3374 | } | |
3375 | #endif /* CONFIG_NFSD_PNFS */ | |
8c18f205 | 3376 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
b26b78cb TM |
3377 | u32 supp[3]; |
3378 | ||
3379 | memcpy(supp, nfsd_suppattrs[minorversion], sizeof(supp)); | |
3380 | supp[0] &= NFSD_SUPPATTR_EXCLCREAT_WORD0; | |
3381 | supp[1] &= NFSD_SUPPATTR_EXCLCREAT_WORD1; | |
3382 | supp[2] &= NFSD_SUPPATTR_EXCLCREAT_WORD2; | |
3383 | ||
3384 | status = nfsd4_encode_bitmap(xdr, supp[0], supp[1], supp[2]); | |
75976de6 KM |
3385 | if (status) |
3386 | goto out; | |
8c18f205 | 3387 | } |
7e705706 | 3388 | |
a8585763 BF |
3389 | if (bmval2 & FATTR4_WORD2_CHANGE_ATTR_TYPE) { |
3390 | p = xdr_reserve_space(xdr, 4); | |
3391 | if (!p) | |
3392 | goto out_resource; | |
3393 | if (IS_I_VERSION(d_inode(dentry))) | |
3394 | *p++ = cpu_to_be32(NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR); | |
3395 | else | |
3396 | *p++ = cpu_to_be32(NFS4_CHANGE_TYPE_IS_TIME_METADATA); | |
3397 | } | |
3398 | ||
0ab88ca4 | 3399 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
7d580722 KM |
3400 | if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { |
3401 | status = nfsd4_encode_security_label(xdr, rqstp, context, | |
3402 | contextlen); | |
3403 | if (status) | |
3404 | goto out; | |
3405 | } | |
0ab88ca4 | 3406 | #endif |
7d580722 | 3407 | |
0e885e84 FL |
3408 | if (bmval2 & FATTR4_WORD2_XATTR_SUPPORT) { |
3409 | p = xdr_reserve_space(xdr, 4); | |
3410 | if (!p) | |
3411 | goto out_resource; | |
3412 | err = xattr_supported_namespace(d_inode(dentry), | |
3413 | XATTR_USER_PREFIX); | |
3414 | *p++ = cpu_to_be32(err == 0); | |
3415 | } | |
3416 | ||
082d4bd7 BF |
3417 | attrlen = htonl(xdr->buf->len - attrlen_offset - 4); |
3418 | write_bytes_to_xdr_buf(xdr->buf, attrlen_offset, &attrlen, 4); | |
1da177e4 LT |
3419 | status = nfs_ok; |
3420 | ||
3421 | out: | |
ba4e55bb | 3422 | #ifdef CONFIG_NFSD_V4_SECURITY_LABEL |
18032ca0 DQ |
3423 | if (context) |
3424 | security_release_secctx(context, contextlen); | |
ba4e55bb | 3425 | #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ |
28e05dd8 | 3426 | kfree(acl); |
18df11d0 | 3427 | if (tempfh) { |
d50e6136 | 3428 | fh_put(tempfh); |
18df11d0 YZ |
3429 | kfree(tempfh); |
3430 | } | |
1fcea5b2 BF |
3431 | if (status) |
3432 | xdr_truncate_encode(xdr, starting_len); | |
1da177e4 LT |
3433 | return status; |
3434 | out_nfserr: | |
b8dd7b9a | 3435 | status = nfserrno(err); |
1da177e4 LT |
3436 | goto out; |
3437 | out_resource: | |
1da177e4 LT |
3438 | status = nfserr_resource; |
3439 | goto out; | |
1da177e4 LT |
3440 | } |
3441 | ||
2825a7f9 BF |
3442 | static void svcxdr_init_encode_from_buffer(struct xdr_stream *xdr, |
3443 | struct xdr_buf *buf, __be32 *p, int bytes) | |
3444 | { | |
3445 | xdr->scratch.iov_len = 0; | |
3446 | memset(buf, 0, sizeof(struct xdr_buf)); | |
3447 | buf->head[0].iov_base = p; | |
3448 | buf->head[0].iov_len = 0; | |
3449 | buf->len = 0; | |
3450 | xdr->buf = buf; | |
3451 | xdr->iov = buf->head; | |
3452 | xdr->p = p; | |
3453 | xdr->end = (void *)p + bytes; | |
3454 | buf->buflen = bytes; | |
3455 | } | |
3456 | ||
d5184658 BF |
3457 | __be32 nfsd4_encode_fattr_to_buf(__be32 **p, int words, |
3458 | struct svc_fh *fhp, struct svc_export *exp, | |
3459 | struct dentry *dentry, u32 *bmval, | |
3460 | struct svc_rqst *rqstp, int ignore_crossmnt) | |
3461 | { | |
2825a7f9 | 3462 | struct xdr_buf dummy; |
d5184658 BF |
3463 | struct xdr_stream xdr; |
3464 | __be32 ret; | |
3465 | ||
2825a7f9 | 3466 | svcxdr_init_encode_from_buffer(&xdr, &dummy, *p, words << 2); |
d5184658 BF |
3467 | ret = nfsd4_encode_fattr(&xdr, fhp, exp, dentry, bmval, rqstp, |
3468 | ignore_crossmnt); | |
3469 | *p = xdr.p; | |
3470 | return ret; | |
3471 | } | |
3472 | ||
c0ce6ec8 BF |
3473 | static inline int attributes_need_mount(u32 *bmval) |
3474 | { | |
3475 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) | |
3476 | return 1; | |
3477 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) | |
3478 | return 1; | |
3479 | return 0; | |
3480 | } | |
3481 | ||
b37ad28b | 3482 | static __be32 |
561f0ed4 BF |
3483 | nfsd4_encode_dirent_fattr(struct xdr_stream *xdr, struct nfsd4_readdir *cd, |
3484 | const char *name, int namlen) | |
1da177e4 LT |
3485 | { |
3486 | struct svc_export *exp = cd->rd_fhp->fh_export; | |
3487 | struct dentry *dentry; | |
b37ad28b | 3488 | __be32 nfserr; |
406a7ea9 | 3489 | int ignore_crossmnt = 0; |
1da177e4 | 3490 | |
6c2d4798 | 3491 | dentry = lookup_positive_unlocked(name, cd->rd_fhp->fh_dentry, namlen); |
1da177e4 LT |
3492 | if (IS_ERR(dentry)) |
3493 | return nfserrno(PTR_ERR(dentry)); | |
3494 | ||
3495 | exp_get(exp); | |
406a7ea9 FF |
3496 | /* |
3497 | * In the case of a mountpoint, the client may be asking for | |
3498 | * attributes that are only properties of the underlying filesystem | |
3499 | * as opposed to the cross-mounted file system. In such a case, | |
3500 | * we will not follow the cross mount and will fill the attribtutes | |
3501 | * directly from the mountpoint dentry. | |
3502 | */ | |
3227fa41 | 3503 | if (nfsd_mountpoint(dentry, exp)) { |
021d3a72 BF |
3504 | int err; |
3505 | ||
3227fa41 BF |
3506 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
3507 | && !attributes_need_mount(cd->rd_bmval)) { | |
3508 | ignore_crossmnt = 1; | |
3509 | goto out_encode; | |
3510 | } | |
dcb488a3 AA |
3511 | /* |
3512 | * Why the heck aren't we just using nfsd_lookup?? | |
3513 | * Different "."/".." handling? Something else? | |
3514 | * At least, add a comment here to explain.... | |
3515 | */ | |
021d3a72 BF |
3516 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
3517 | if (err) { | |
3518 | nfserr = nfserrno(err); | |
1da177e4 LT |
3519 | goto out_put; |
3520 | } | |
dcb488a3 AA |
3521 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
3522 | if (nfserr) | |
3523 | goto out_put; | |
1da177e4 LT |
3524 | |
3525 | } | |
3227fa41 | 3526 | out_encode: |
561f0ed4 | 3527 | nfserr = nfsd4_encode_fattr(xdr, NULL, exp, dentry, cd->rd_bmval, |
406a7ea9 | 3528 | cd->rd_rqstp, ignore_crossmnt); |
1da177e4 LT |
3529 | out_put: |
3530 | dput(dentry); | |
3531 | exp_put(exp); | |
3532 | return nfserr; | |
3533 | } | |
3534 | ||
2ebbc012 | 3535 | static __be32 * |
561f0ed4 | 3536 | nfsd4_encode_rdattr_error(struct xdr_stream *xdr, __be32 nfserr) |
1da177e4 | 3537 | { |
561f0ed4 BF |
3538 | __be32 *p; |
3539 | ||
c3a45617 | 3540 | p = xdr_reserve_space(xdr, 20); |
561f0ed4 | 3541 | if (!p) |
1da177e4 LT |
3542 | return NULL; |
3543 | *p++ = htonl(2); | |
3544 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ | |
3545 | *p++ = htonl(0); /* bmval1 */ | |
3546 | ||
87915c64 | 3547 | *p++ = htonl(4); /* attribute length */ |
1da177e4 | 3548 | *p++ = nfserr; /* no htonl */ |
1da177e4 LT |
3549 | return p; |
3550 | } | |
3551 | ||
3552 | static int | |
a0ad13ef N |
3553 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
3554 | loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 3555 | { |
a0ad13ef | 3556 | struct readdir_cd *ccd = ccdv; |
1da177e4 | 3557 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
561f0ed4 BF |
3558 | struct xdr_stream *xdr = cd->xdr; |
3559 | int start_offset = xdr->buf->len; | |
3560 | int cookie_offset; | |
aee37764 | 3561 | u32 name_and_cookie; |
561f0ed4 | 3562 | int entry_bytes; |
b37ad28b | 3563 | __be32 nfserr = nfserr_toosmall; |
561f0ed4 BF |
3564 | __be64 wire_offset; |
3565 | __be32 *p; | |
1da177e4 LT |
3566 | |
3567 | /* In nfsv4, "." and ".." never make it onto the wire.. */ | |
3568 | if (name && isdotent(name, namlen)) { | |
3569 | cd->common.err = nfs_ok; | |
3570 | return 0; | |
3571 | } | |
3572 | ||
561f0ed4 BF |
3573 | if (cd->cookie_offset) { |
3574 | wire_offset = cpu_to_be64(offset); | |
3575 | write_bytes_to_xdr_buf(xdr->buf, cd->cookie_offset, | |
3576 | &wire_offset, 8); | |
3577 | } | |
1da177e4 | 3578 | |
561f0ed4 BF |
3579 | p = xdr_reserve_space(xdr, 4); |
3580 | if (!p) | |
1da177e4 | 3581 | goto fail; |
1da177e4 | 3582 | *p++ = xdr_one; /* mark entry present */ |
561f0ed4 BF |
3583 | cookie_offset = xdr->buf->len; |
3584 | p = xdr_reserve_space(xdr, 3*4 + namlen); | |
3585 | if (!p) | |
3586 | goto fail; | |
1da177e4 LT |
3587 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
3588 | p = xdr_encode_array(p, name, namlen); /* name length & name */ | |
3589 | ||
561f0ed4 | 3590 | nfserr = nfsd4_encode_dirent_fattr(xdr, cd, name, namlen); |
1da177e4 LT |
3591 | switch (nfserr) { |
3592 | case nfs_ok: | |
1da177e4 LT |
3593 | break; |
3594 | case nfserr_resource: | |
3595 | nfserr = nfserr_toosmall; | |
3596 | goto fail; | |
b2c0cea6 | 3597 | case nfserr_noent: |
f41c5ad2 | 3598 | xdr_truncate_encode(xdr, start_offset); |
b2c0cea6 | 3599 | goto skip_entry; |
1da177e4 LT |
3600 | default: |
3601 | /* | |
3602 | * If the client requested the RDATTR_ERROR attribute, | |
3603 | * we stuff the error code into this attribute | |
3604 | * and continue. If this attribute was not requested, | |
3605 | * then in accordance with the spec, we fail the | |
3606 | * entire READDIR operation(!) | |
3607 | */ | |
3608 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) | |
3609 | goto fail; | |
561f0ed4 | 3610 | p = nfsd4_encode_rdattr_error(xdr, nfserr); |
34081efc FI |
3611 | if (p == NULL) { |
3612 | nfserr = nfserr_toosmall; | |
1da177e4 | 3613 | goto fail; |
34081efc | 3614 | } |
1da177e4 | 3615 | } |
561f0ed4 BF |
3616 | nfserr = nfserr_toosmall; |
3617 | entry_bytes = xdr->buf->len - start_offset; | |
3618 | if (entry_bytes > cd->rd_maxcount) | |
3619 | goto fail; | |
3620 | cd->rd_maxcount -= entry_bytes; | |
aee37764 BF |
3621 | /* |
3622 | * RFC 3530 14.2.24 describes rd_dircount as only a "hint", so | |
3623 | * let's always let through the first entry, at least: | |
3624 | */ | |
0ec016e3 BF |
3625 | if (!cd->rd_dircount) |
3626 | goto fail; | |
3627 | name_and_cookie = 4 + 4 * XDR_QUADLEN(namlen) + 8; | |
aee37764 BF |
3628 | if (name_and_cookie > cd->rd_dircount && cd->cookie_offset) |
3629 | goto fail; | |
3630 | cd->rd_dircount -= min(cd->rd_dircount, name_and_cookie); | |
0ec016e3 | 3631 | |
561f0ed4 | 3632 | cd->cookie_offset = cookie_offset; |
b2c0cea6 | 3633 | skip_entry: |
1da177e4 LT |
3634 | cd->common.err = nfs_ok; |
3635 | return 0; | |
3636 | fail: | |
561f0ed4 | 3637 | xdr_truncate_encode(xdr, start_offset); |
1da177e4 LT |
3638 | cd->common.err = nfserr; |
3639 | return -EINVAL; | |
3640 | } | |
3641 | ||
d0a381dd BF |
3642 | static __be32 |
3643 | nfsd4_encode_stateid(struct xdr_stream *xdr, stateid_t *sid) | |
e2f282b9 | 3644 | { |
bc749ca4 | 3645 | __be32 *p; |
e2f282b9 | 3646 | |
d0a381dd BF |
3647 | p = xdr_reserve_space(xdr, sizeof(stateid_t)); |
3648 | if (!p) | |
3649 | return nfserr_resource; | |
c373b0a4 | 3650 | *p++ = cpu_to_be32(sid->si_generation); |
0c0c267b BF |
3651 | p = xdr_encode_opaque_fixed(p, &sid->si_opaque, |
3652 | sizeof(stateid_opaque_t)); | |
d0a381dd | 3653 | return 0; |
e2f282b9 BH |
3654 | } |
3655 | ||
695e12f8 | 3656 | static __be32 |
b37ad28b | 3657 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
1da177e4 | 3658 | { |
d0a381dd | 3659 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3660 | __be32 *p; |
1da177e4 | 3661 | |
bac966d6 BF |
3662 | p = xdr_reserve_space(xdr, 8); |
3663 | if (!p) | |
3664 | return nfserr_resource; | |
3665 | *p++ = cpu_to_be32(access->ac_supported); | |
3666 | *p++ = cpu_to_be32(access->ac_resp_access); | |
3667 | return 0; | |
1da177e4 LT |
3668 | } |
3669 | ||
1d1bc8f2 BF |
3670 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
3671 | { | |
d0a381dd | 3672 | struct xdr_stream *xdr = &resp->xdr; |
1d1bc8f2 BF |
3673 | __be32 *p; |
3674 | ||
bac966d6 BF |
3675 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 8); |
3676 | if (!p) | |
3677 | return nfserr_resource; | |
3678 | p = xdr_encode_opaque_fixed(p, bcts->sessionid.data, | |
3679 | NFS4_MAX_SESSIONID_LEN); | |
3680 | *p++ = cpu_to_be32(bcts->dir); | |
3681 | /* Upshifting from TCP to RDMA is not supported */ | |
3682 | *p++ = cpu_to_be32(0); | |
3683 | return 0; | |
1d1bc8f2 BF |
3684 | } |
3685 | ||
695e12f8 | 3686 | static __be32 |
b37ad28b | 3687 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
1da177e4 | 3688 | { |
d0a381dd BF |
3689 | struct xdr_stream *xdr = &resp->xdr; |
3690 | ||
bac966d6 | 3691 | return nfsd4_encode_stateid(xdr, &close->cl_stateid); |
1da177e4 LT |
3692 | } |
3693 | ||
3694 | ||
695e12f8 | 3695 | static __be32 |
b37ad28b | 3696 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
1da177e4 | 3697 | { |
d0a381dd | 3698 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3699 | __be32 *p; |
1da177e4 | 3700 | |
bac966d6 BF |
3701 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
3702 | if (!p) | |
3703 | return nfserr_resource; | |
3704 | p = xdr_encode_opaque_fixed(p, commit->co_verf.data, | |
0c0c267b | 3705 | NFS4_VERIFIER_SIZE); |
bac966d6 | 3706 | return 0; |
1da177e4 LT |
3707 | } |
3708 | ||
695e12f8 | 3709 | static __be32 |
b37ad28b | 3710 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
1da177e4 | 3711 | { |
d0a381dd | 3712 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3713 | __be32 *p; |
1da177e4 | 3714 | |
bac966d6 BF |
3715 | p = xdr_reserve_space(xdr, 20); |
3716 | if (!p) | |
3717 | return nfserr_resource; | |
3718 | encode_cinfo(p, &create->cr_cinfo); | |
b96811cd | 3719 | return nfsd4_encode_bitmap(xdr, create->cr_bmval[0], |
bac966d6 | 3720 | create->cr_bmval[1], create->cr_bmval[2]); |
1da177e4 LT |
3721 | } |
3722 | ||
b37ad28b AV |
3723 | static __be32 |
3724 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) | |
1da177e4 LT |
3725 | { |
3726 | struct svc_fh *fhp = getattr->ga_fhp; | |
d5184658 | 3727 | struct xdr_stream *xdr = &resp->xdr; |
1da177e4 | 3728 | |
bac966d6 BF |
3729 | return nfsd4_encode_fattr(xdr, fhp, fhp->fh_export, fhp->fh_dentry, |
3730 | getattr->ga_bmval, resp->rqstp, 0); | |
1da177e4 LT |
3731 | } |
3732 | ||
695e12f8 BH |
3733 | static __be32 |
3734 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) | |
1da177e4 | 3735 | { |
d0a381dd | 3736 | struct xdr_stream *xdr = &resp->xdr; |
695e12f8 | 3737 | struct svc_fh *fhp = *fhpp; |
1da177e4 | 3738 | unsigned int len; |
bc749ca4 | 3739 | __be32 *p; |
1da177e4 | 3740 | |
bac966d6 BF |
3741 | len = fhp->fh_handle.fh_size; |
3742 | p = xdr_reserve_space(xdr, len + 4); | |
3743 | if (!p) | |
3744 | return nfserr_resource; | |
3745 | p = xdr_encode_opaque(p, &fhp->fh_handle.fh_base, len); | |
3746 | return 0; | |
1da177e4 LT |
3747 | } |
3748 | ||
3749 | /* | |
3750 | * Including all fields other than the name, a LOCK4denied structure requires | |
3751 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. | |
3752 | */ | |
d0a381dd BF |
3753 | static __be32 |
3754 | nfsd4_encode_lock_denied(struct xdr_stream *xdr, struct nfsd4_lock_denied *ld) | |
1da177e4 | 3755 | { |
7c13f344 | 3756 | struct xdr_netobj *conf = &ld->ld_owner; |
bc749ca4 | 3757 | __be32 *p; |
1da177e4 | 3758 | |
8c7424cf | 3759 | again: |
d0a381dd | 3760 | p = xdr_reserve_space(xdr, 32 + XDR_LEN(conf->len)); |
8c7424cf BF |
3761 | if (!p) { |
3762 | /* | |
3763 | * Don't fail to return the result just because we can't | |
3764 | * return the conflicting open: | |
3765 | */ | |
3766 | if (conf->len) { | |
f98bac5a | 3767 | kfree(conf->data); |
8c7424cf BF |
3768 | conf->len = 0; |
3769 | conf->data = NULL; | |
3770 | goto again; | |
3771 | } | |
d0a381dd | 3772 | return nfserr_resource; |
8c7424cf | 3773 | } |
b64c7f3b BF |
3774 | p = xdr_encode_hyper(p, ld->ld_start); |
3775 | p = xdr_encode_hyper(p, ld->ld_length); | |
c373b0a4 | 3776 | *p++ = cpu_to_be32(ld->ld_type); |
7c13f344 | 3777 | if (conf->len) { |
0c0c267b BF |
3778 | p = xdr_encode_opaque_fixed(p, &ld->ld_clientid, 8); |
3779 | p = xdr_encode_opaque(p, conf->data, conf->len); | |
f98bac5a | 3780 | kfree(conf->data); |
1da177e4 | 3781 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
b64c7f3b | 3782 | p = xdr_encode_hyper(p, (u64)0); /* clientid */ |
c373b0a4 | 3783 | *p++ = cpu_to_be32(0); /* length of owner name */ |
1da177e4 | 3784 | } |
d0a381dd | 3785 | return nfserr_denied; |
1da177e4 LT |
3786 | } |
3787 | ||
695e12f8 | 3788 | static __be32 |
b37ad28b | 3789 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
1da177e4 | 3790 | { |
d0a381dd BF |
3791 | struct xdr_stream *xdr = &resp->xdr; |
3792 | ||
e2f282b9 | 3793 | if (!nfserr) |
d0a381dd | 3794 | nfserr = nfsd4_encode_stateid(xdr, &lock->lk_resp_stateid); |
e2f282b9 | 3795 | else if (nfserr == nfserr_denied) |
d0a381dd | 3796 | nfserr = nfsd4_encode_lock_denied(xdr, &lock->lk_denied); |
f98bac5a | 3797 | |
695e12f8 | 3798 | return nfserr; |
1da177e4 LT |
3799 | } |
3800 | ||
695e12f8 | 3801 | static __be32 |
b37ad28b | 3802 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
1da177e4 | 3803 | { |
d0a381dd BF |
3804 | struct xdr_stream *xdr = &resp->xdr; |
3805 | ||
1da177e4 | 3806 | if (nfserr == nfserr_denied) |
d0a381dd | 3807 | nfsd4_encode_lock_denied(xdr, &lockt->lt_denied); |
695e12f8 | 3808 | return nfserr; |
1da177e4 LT |
3809 | } |
3810 | ||
695e12f8 | 3811 | static __be32 |
b37ad28b | 3812 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
1da177e4 | 3813 | { |
d0a381dd BF |
3814 | struct xdr_stream *xdr = &resp->xdr; |
3815 | ||
bac966d6 | 3816 | return nfsd4_encode_stateid(xdr, &locku->lu_stateid); |
1da177e4 LT |
3817 | } |
3818 | ||
3819 | ||
695e12f8 | 3820 | static __be32 |
b37ad28b | 3821 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
1da177e4 | 3822 | { |
d0a381dd | 3823 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3824 | __be32 *p; |
1da177e4 | 3825 | |
bac966d6 BF |
3826 | p = xdr_reserve_space(xdr, 20); |
3827 | if (!p) | |
3828 | return nfserr_resource; | |
3829 | p = encode_cinfo(p, &link->li_cinfo); | |
3830 | return 0; | |
1da177e4 LT |
3831 | } |
3832 | ||
3833 | ||
695e12f8 | 3834 | static __be32 |
b37ad28b | 3835 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
1da177e4 | 3836 | { |
d0a381dd | 3837 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 3838 | __be32 *p; |
1da177e4 | 3839 | |
d0a381dd BF |
3840 | nfserr = nfsd4_encode_stateid(xdr, &open->op_stateid); |
3841 | if (nfserr) | |
bac966d6 | 3842 | return nfserr; |
75976de6 | 3843 | p = xdr_reserve_space(xdr, 24); |
d0a381dd BF |
3844 | if (!p) |
3845 | return nfserr_resource; | |
d05d5744 | 3846 | p = encode_cinfo(p, &open->op_cinfo); |
c373b0a4 | 3847 | *p++ = cpu_to_be32(open->op_rflags); |
1da177e4 | 3848 | |
75976de6 KM |
3849 | nfserr = nfsd4_encode_bitmap(xdr, open->op_bmval[0], open->op_bmval[1], |
3850 | open->op_bmval[2]); | |
3851 | if (nfserr) | |
bac966d6 | 3852 | return nfserr; |
75976de6 KM |
3853 | |
3854 | p = xdr_reserve_space(xdr, 4); | |
3855 | if (!p) | |
3856 | return nfserr_resource; | |
3857 | ||
3858 | *p++ = cpu_to_be32(open->op_delegate_type); | |
1da177e4 LT |
3859 | switch (open->op_delegate_type) { |
3860 | case NFS4_OPEN_DELEGATE_NONE: | |
3861 | break; | |
3862 | case NFS4_OPEN_DELEGATE_READ: | |
d0a381dd BF |
3863 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
3864 | if (nfserr) | |
3865 | return nfserr; | |
3866 | p = xdr_reserve_space(xdr, 20); | |
3867 | if (!p) | |
3868 | return nfserr_resource; | |
c373b0a4 | 3869 | *p++ = cpu_to_be32(open->op_recall); |
1da177e4 LT |
3870 | |
3871 | /* | |
3872 | * TODO: ACE's in delegations | |
3873 | */ | |
c373b0a4 BF |
3874 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
3875 | *p++ = cpu_to_be32(0); | |
3876 | *p++ = cpu_to_be32(0); | |
3877 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 LT |
3878 | break; |
3879 | case NFS4_OPEN_DELEGATE_WRITE: | |
d0a381dd BF |
3880 | nfserr = nfsd4_encode_stateid(xdr, &open->op_delegate_stateid); |
3881 | if (nfserr) | |
3882 | return nfserr; | |
3883 | p = xdr_reserve_space(xdr, 32); | |
3884 | if (!p) | |
3885 | return nfserr_resource; | |
c373b0a4 | 3886 | *p++ = cpu_to_be32(0); |
1da177e4 LT |
3887 | |
3888 | /* | |
3889 | * TODO: space_limit's in delegations | |
3890 | */ | |
c373b0a4 BF |
3891 | *p++ = cpu_to_be32(NFS4_LIMIT_SIZE); |
3892 | *p++ = cpu_to_be32(~(u32)0); | |
3893 | *p++ = cpu_to_be32(~(u32)0); | |
1da177e4 LT |
3894 | |
3895 | /* | |
3896 | * TODO: ACE's in delegations | |
3897 | */ | |
c373b0a4 BF |
3898 | *p++ = cpu_to_be32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
3899 | *p++ = cpu_to_be32(0); | |
3900 | *p++ = cpu_to_be32(0); | |
3901 | *p++ = cpu_to_be32(0); /* XXX: is NULL principal ok? */ | |
1da177e4 | 3902 | break; |
d24433cd BH |
3903 | case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */ |
3904 | switch (open->op_why_no_deleg) { | |
3905 | case WND4_CONTENTION: | |
3906 | case WND4_RESOURCE: | |
d0a381dd BF |
3907 | p = xdr_reserve_space(xdr, 8); |
3908 | if (!p) | |
3909 | return nfserr_resource; | |
c373b0a4 BF |
3910 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
3911 | /* deleg signaling not supported yet: */ | |
3912 | *p++ = cpu_to_be32(0); | |
d24433cd BH |
3913 | break; |
3914 | default: | |
d0a381dd BF |
3915 | p = xdr_reserve_space(xdr, 4); |
3916 | if (!p) | |
3917 | return nfserr_resource; | |
c373b0a4 | 3918 | *p++ = cpu_to_be32(open->op_why_no_deleg); |
d24433cd | 3919 | } |
d24433cd | 3920 | break; |
1da177e4 LT |
3921 | default: |
3922 | BUG(); | |
3923 | } | |
3924 | /* XXX save filehandle here */ | |
bac966d6 | 3925 | return 0; |
1da177e4 LT |
3926 | } |
3927 | ||
695e12f8 | 3928 | static __be32 |
b37ad28b | 3929 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
1da177e4 | 3930 | { |
d0a381dd BF |
3931 | struct xdr_stream *xdr = &resp->xdr; |
3932 | ||
bac966d6 | 3933 | return nfsd4_encode_stateid(xdr, &oc->oc_resp_stateid); |
1da177e4 LT |
3934 | } |
3935 | ||
695e12f8 | 3936 | static __be32 |
b37ad28b | 3937 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
1da177e4 | 3938 | { |
d0a381dd BF |
3939 | struct xdr_stream *xdr = &resp->xdr; |
3940 | ||
bac966d6 | 3941 | return nfsd4_encode_stateid(xdr, &od->od_stateid); |
1da177e4 LT |
3942 | } |
3943 | ||
dc97618d BF |
3944 | static __be32 nfsd4_encode_splice_read( |
3945 | struct nfsd4_compoundres *resp, | |
3946 | struct nfsd4_read *read, | |
3947 | struct file *file, unsigned long maxcount) | |
1da177e4 | 3948 | { |
ddd1ea56 | 3949 | struct xdr_stream *xdr = &resp->xdr; |
34a78b48 | 3950 | struct xdr_buf *buf = xdr->buf; |
76e5492b | 3951 | int status, space_left; |
dc97618d | 3952 | u32 eof; |
dc97618d | 3953 | __be32 nfserr; |
fec25fa4 | 3954 | __be32 *p = xdr->p - 2; |
1da177e4 | 3955 | |
d5d5c304 KM |
3956 | /* Make sure there will be room for padding if needed */ |
3957 | if (xdr->end - xdr->p < 1) | |
d0a381dd | 3958 | return nfserr_resource; |
dc97618d | 3959 | |
87c5942e | 3960 | nfserr = nfsd_splice_read(read->rd_rqstp, read->rd_fhp, |
83a63072 | 3961 | file, read->rd_offset, &maxcount, &eof); |
87c5942e | 3962 | read->rd_length = maxcount; |
76e5492b CL |
3963 | if (nfserr) |
3964 | goto out_err; | |
3965 | status = svc_encode_result_payload(read->rd_rqstp, | |
3966 | buf->head[0].iov_len, maxcount); | |
3967 | if (status) { | |
3968 | nfserr = nfserrno(status); | |
3969 | goto out_err; | |
b0e35fda | 3970 | } |
1da177e4 | 3971 | |
fec25fa4 BF |
3972 | *(p++) = htonl(eof); |
3973 | *(p++) = htonl(maxcount); | |
dc97618d | 3974 | |
34a78b48 BF |
3975 | buf->page_len = maxcount; |
3976 | buf->len += maxcount; | |
15b23ef5 BF |
3977 | xdr->page_ptr += (buf->page_base + maxcount + PAGE_SIZE - 1) |
3978 | / PAGE_SIZE; | |
dc97618d BF |
3979 | |
3980 | /* Use rest of head for padding and remaining ops: */ | |
34a78b48 BF |
3981 | buf->tail[0].iov_base = xdr->p; |
3982 | buf->tail[0].iov_len = 0; | |
fec25fa4 | 3983 | xdr->iov = buf->tail; |
dc97618d | 3984 | if (maxcount&3) { |
fec25fa4 BF |
3985 | int pad = 4 - (maxcount&3); |
3986 | ||
3987 | *(xdr->p++) = 0; | |
3988 | ||
34a78b48 | 3989 | buf->tail[0].iov_base += maxcount&3; |
fec25fa4 BF |
3990 | buf->tail[0].iov_len = pad; |
3991 | buf->len += pad; | |
b0e35fda | 3992 | } |
2825a7f9 | 3993 | |
dc97618d | 3994 | space_left = min_t(int, (void *)xdr->end - (void *)xdr->p, |
34a78b48 BF |
3995 | buf->buflen - buf->len); |
3996 | buf->buflen = buf->len + space_left; | |
dc97618d BF |
3997 | xdr->end = (__be32 *)((void *)xdr->end + space_left); |
3998 | ||
3999 | return 0; | |
76e5492b CL |
4000 | |
4001 | out_err: | |
4002 | /* | |
4003 | * nfsd_splice_actor may have already messed with the | |
4004 | * page length; reset it so as not to confuse | |
4005 | * xdr_truncate_encode in our caller. | |
4006 | */ | |
4007 | buf->page_len = 0; | |
4008 | return nfserr; | |
dc97618d BF |
4009 | } |
4010 | ||
4011 | static __be32 nfsd4_encode_readv(struct nfsd4_compoundres *resp, | |
4012 | struct nfsd4_read *read, | |
4013 | struct file *file, unsigned long maxcount) | |
4014 | { | |
4015 | struct xdr_stream *xdr = &resp->xdr; | |
4016 | u32 eof; | |
dc97618d | 4017 | int starting_len = xdr->buf->len - 8; |
dc97618d BF |
4018 | __be32 nfserr; |
4019 | __be32 tmp; | |
b0420980 | 4020 | int pad; |
1da177e4 | 4021 | |
403217f3 AS |
4022 | read->rd_vlen = xdr_reserve_space_vec(xdr, resp->rqstp->rq_vec, maxcount); |
4023 | if (read->rd_vlen < 0) | |
4024 | return nfserr_resource; | |
1da177e4 | 4025 | |
87c5942e | 4026 | nfserr = nfsd_readv(resp->rqstp, read->rd_fhp, file, read->rd_offset, |
83a63072 TM |
4027 | resp->rqstp->rq_vec, read->rd_vlen, &maxcount, |
4028 | &eof); | |
87c5942e | 4029 | read->rd_length = maxcount; |
dc97618d | 4030 | if (nfserr) |
1da177e4 | 4031 | return nfserr; |
03493bca | 4032 | if (svc_encode_result_payload(resp->rqstp, starting_len + 8, maxcount)) |
41205539 | 4033 | return nfserr_io; |
7dcf4ab9 | 4034 | xdr_truncate_encode(xdr, starting_len + 8 + xdr_align_size(maxcount)); |
dc97618d | 4035 | |
dc97618d BF |
4036 | tmp = htonl(eof); |
4037 | write_bytes_to_xdr_buf(xdr->buf, starting_len , &tmp, 4); | |
4038 | tmp = htonl(maxcount); | |
4039 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 4, &tmp, 4); | |
4040 | ||
7dcf4ab9 | 4041 | tmp = xdr_zero; |
b0420980 BF |
4042 | pad = (maxcount&3) ? 4 - (maxcount&3) : 0; |
4043 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 8 + maxcount, | |
7dcf4ab9 | 4044 | &tmp, pad); |
1da177e4 | 4045 | return 0; |
dc97618d BF |
4046 | |
4047 | } | |
4048 | ||
4049 | static __be32 | |
4050 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4051 | struct nfsd4_read *read) | |
4052 | { | |
4053 | unsigned long maxcount; | |
4054 | struct xdr_stream *xdr = &resp->xdr; | |
5c4583b2 | 4055 | struct file *file; |
dc97618d | 4056 | int starting_len = xdr->buf->len; |
dc97618d | 4057 | __be32 *p; |
dc97618d | 4058 | |
5c4583b2 JL |
4059 | if (nfserr) |
4060 | return nfserr; | |
4061 | file = read->rd_nf->nf_file; | |
4062 | ||
dc97618d BF |
4063 | p = xdr_reserve_space(xdr, 8); /* eof flag and byte count */ |
4064 | if (!p) { | |
779fb0f3 | 4065 | WARN_ON_ONCE(test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)); |
bac966d6 | 4066 | return nfserr_resource; |
dc97618d | 4067 | } |
68e8bb03 CH |
4068 | if (resp->xdr.buf->page_len && |
4069 | test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) { | |
b0420980 | 4070 | WARN_ON_ONCE(1); |
bac966d6 | 4071 | return nfserr_resource; |
dc97618d | 4072 | } |
dc97618d BF |
4073 | xdr_commit_encode(xdr); |
4074 | ||
4075 | maxcount = svc_max_payload(resp->rqstp); | |
68e8bb03 CH |
4076 | maxcount = min_t(unsigned long, maxcount, |
4077 | (xdr->buf->buflen - xdr->buf->len)); | |
3c7aa15d | 4078 | maxcount = min_t(unsigned long, maxcount, read->rd_length); |
dc97618d | 4079 | |
68e8bb03 CH |
4080 | if (file->f_op->splice_read && |
4081 | test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) | |
96bcad50 | 4082 | nfserr = nfsd4_encode_splice_read(resp, read, file, maxcount); |
dc97618d | 4083 | else |
96bcad50 | 4084 | nfserr = nfsd4_encode_readv(resp, read, file, maxcount); |
dc97618d | 4085 | |
96bcad50 | 4086 | if (nfserr) |
dc97618d | 4087 | xdr_truncate_encode(xdr, starting_len); |
96bcad50 | 4088 | |
96bcad50 | 4089 | return nfserr; |
1da177e4 LT |
4090 | } |
4091 | ||
b37ad28b AV |
4092 | static __be32 |
4093 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) | |
1da177e4 LT |
4094 | { |
4095 | int maxcount; | |
476a7b1f BF |
4096 | __be32 wire_count; |
4097 | int zero = 0; | |
ddd1ea56 | 4098 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 4099 | int length_offset = xdr->buf->len; |
76e5492b | 4100 | int status; |
bc749ca4 | 4101 | __be32 *p; |
1da177e4 | 4102 | |
2825a7f9 BF |
4103 | p = xdr_reserve_space(xdr, 4); |
4104 | if (!p) | |
4105 | return nfserr_resource; | |
1da177e4 | 4106 | maxcount = PAGE_SIZE; |
d0a381dd | 4107 | |
476a7b1f BF |
4108 | p = xdr_reserve_space(xdr, maxcount); |
4109 | if (!p) | |
4e21ac4b | 4110 | return nfserr_resource; |
1da177e4 | 4111 | /* |
fd4a0edf MS |
4112 | * XXX: By default, vfs_readlink() will truncate symlinks if they |
4113 | * would overflow the buffer. Is this kosher in NFSv4? If not, one | |
4114 | * easy fix is: if vfs_readlink() precisely fills the buffer, assume | |
4115 | * that truncation occurred, and return NFS4ERR_RESOURCE. | |
1da177e4 | 4116 | */ |
476a7b1f BF |
4117 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, |
4118 | (char *)p, &maxcount); | |
1da177e4 | 4119 | if (nfserr == nfserr_isdir) |
d3f627c8 | 4120 | nfserr = nfserr_inval; |
76e5492b CL |
4121 | if (nfserr) |
4122 | goto out_err; | |
4123 | status = svc_encode_result_payload(readlink->rl_rqstp, length_offset, | |
4124 | maxcount); | |
4125 | if (status) { | |
4126 | nfserr = nfserrno(status); | |
4127 | goto out_err; | |
d3f627c8 | 4128 | } |
1da177e4 | 4129 | |
476a7b1f BF |
4130 | wire_count = htonl(maxcount); |
4131 | write_bytes_to_xdr_buf(xdr->buf, length_offset, &wire_count, 4); | |
69bbd9c7 | 4132 | xdr_truncate_encode(xdr, length_offset + 4 + ALIGN(maxcount, 4)); |
476a7b1f BF |
4133 | if (maxcount & 3) |
4134 | write_bytes_to_xdr_buf(xdr->buf, length_offset + 4 + maxcount, | |
4135 | &zero, 4 - (maxcount&3)); | |
1da177e4 | 4136 | return 0; |
76e5492b CL |
4137 | |
4138 | out_err: | |
4139 | xdr_truncate_encode(xdr, length_offset); | |
4140 | return nfserr; | |
1da177e4 LT |
4141 | } |
4142 | ||
b37ad28b AV |
4143 | static __be32 |
4144 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) | |
1da177e4 LT |
4145 | { |
4146 | int maxcount; | |
561f0ed4 | 4147 | int bytes_left; |
1da177e4 | 4148 | loff_t offset; |
561f0ed4 | 4149 | __be64 wire_offset; |
ddd1ea56 | 4150 | struct xdr_stream *xdr = &resp->xdr; |
1fcea5b2 | 4151 | int starting_len = xdr->buf->len; |
bc749ca4 | 4152 | __be32 *p; |
1da177e4 | 4153 | |
d0a381dd BF |
4154 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); |
4155 | if (!p) | |
4156 | return nfserr_resource; | |
1da177e4 LT |
4157 | |
4158 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ | |
c373b0a4 BF |
4159 | *p++ = cpu_to_be32(0); |
4160 | *p++ = cpu_to_be32(0); | |
4aea24b2 BF |
4161 | resp->xdr.buf->head[0].iov_len = ((char *)resp->xdr.p) |
4162 | - (char *)resp->xdr.buf->head[0].iov_base; | |
1da177e4 LT |
4163 | |
4164 | /* | |
561f0ed4 BF |
4165 | * Number of bytes left for directory entries allowing for the |
4166 | * final 8 bytes of the readdir and a following failed op: | |
4167 | */ | |
4168 | bytes_left = xdr->buf->buflen - xdr->buf->len | |
4169 | - COMPOUND_ERR_SLACK_SPACE - 8; | |
4170 | if (bytes_left < 0) { | |
4171 | nfserr = nfserr_resource; | |
4172 | goto err_no_verf; | |
4173 | } | |
9c2ece6e SM |
4174 | maxcount = svc_max_payload(resp->rqstp); |
4175 | maxcount = min_t(u32, readdir->rd_maxcount, maxcount); | |
561f0ed4 BF |
4176 | /* |
4177 | * Note the rfc defines rd_maxcount as the size of the | |
4178 | * READDIR4resok structure, which includes the verifier above | |
4179 | * and the 8 bytes encoded at the end of this function: | |
1da177e4 | 4180 | */ |
561f0ed4 BF |
4181 | if (maxcount < 16) { |
4182 | nfserr = nfserr_toosmall; | |
1da177e4 LT |
4183 | goto err_no_verf; |
4184 | } | |
561f0ed4 | 4185 | maxcount = min_t(int, maxcount-16, bytes_left); |
1da177e4 | 4186 | |
aee37764 BF |
4187 | /* RFC 3530 14.2.24 allows us to ignore dircount when it's 0: */ |
4188 | if (!readdir->rd_dircount) | |
9c2ece6e | 4189 | readdir->rd_dircount = svc_max_payload(resp->rqstp); |
aee37764 | 4190 | |
561f0ed4 BF |
4191 | readdir->xdr = xdr; |
4192 | readdir->rd_maxcount = maxcount; | |
1da177e4 | 4193 | readdir->common.err = 0; |
561f0ed4 | 4194 | readdir->cookie_offset = 0; |
1da177e4 LT |
4195 | |
4196 | offset = readdir->rd_cookie; | |
4197 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, | |
4198 | &offset, | |
4199 | &readdir->common, nfsd4_encode_dirent); | |
4200 | if (nfserr == nfs_ok && | |
4201 | readdir->common.err == nfserr_toosmall && | |
561f0ed4 BF |
4202 | xdr->buf->len == starting_len + 8) { |
4203 | /* nothing encoded; which limit did we hit?: */ | |
4204 | if (maxcount - 16 < bytes_left) | |
4205 | /* It was the fault of rd_maxcount: */ | |
4206 | nfserr = nfserr_toosmall; | |
4207 | else | |
4208 | /* We ran out of buffer space: */ | |
4209 | nfserr = nfserr_resource; | |
4210 | } | |
1da177e4 LT |
4211 | if (nfserr) |
4212 | goto err_no_verf; | |
4213 | ||
561f0ed4 BF |
4214 | if (readdir->cookie_offset) { |
4215 | wire_offset = cpu_to_be64(offset); | |
4216 | write_bytes_to_xdr_buf(xdr->buf, readdir->cookie_offset, | |
4217 | &wire_offset, 8); | |
4218 | } | |
1da177e4 | 4219 | |
561f0ed4 BF |
4220 | p = xdr_reserve_space(xdr, 8); |
4221 | if (!p) { | |
4222 | WARN_ON_ONCE(1); | |
4223 | goto err_no_verf; | |
4224 | } | |
1da177e4 LT |
4225 | *p++ = 0; /* no more entries */ |
4226 | *p++ = htonl(readdir->common.err == nfserr_eof); | |
1da177e4 LT |
4227 | |
4228 | return 0; | |
4229 | err_no_verf: | |
1fcea5b2 | 4230 | xdr_truncate_encode(xdr, starting_len); |
1da177e4 LT |
4231 | return nfserr; |
4232 | } | |
4233 | ||
695e12f8 | 4234 | static __be32 |
b37ad28b | 4235 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
1da177e4 | 4236 | { |
d0a381dd | 4237 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 4238 | __be32 *p; |
1da177e4 | 4239 | |
bac966d6 BF |
4240 | p = xdr_reserve_space(xdr, 20); |
4241 | if (!p) | |
4242 | return nfserr_resource; | |
4243 | p = encode_cinfo(p, &remove->rm_cinfo); | |
4244 | return 0; | |
1da177e4 LT |
4245 | } |
4246 | ||
695e12f8 | 4247 | static __be32 |
b37ad28b | 4248 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
1da177e4 | 4249 | { |
d0a381dd | 4250 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 4251 | __be32 *p; |
1da177e4 | 4252 | |
bac966d6 BF |
4253 | p = xdr_reserve_space(xdr, 40); |
4254 | if (!p) | |
4255 | return nfserr_resource; | |
4256 | p = encode_cinfo(p, &rename->rn_sinfo); | |
4257 | p = encode_cinfo(p, &rename->rn_tinfo); | |
4258 | return 0; | |
1da177e4 LT |
4259 | } |
4260 | ||
695e12f8 | 4261 | static __be32 |
bac966d6 | 4262 | nfsd4_do_encode_secinfo(struct xdr_stream *xdr, struct svc_export *exp) |
dcb488a3 | 4263 | { |
676e4ebd | 4264 | u32 i, nflavs, supported; |
4796f457 BF |
4265 | struct exp_flavor_info *flavs; |
4266 | struct exp_flavor_info def_flavs[2]; | |
676e4ebd CL |
4267 | __be32 *p, *flavorsp; |
4268 | static bool report = true; | |
dcb488a3 | 4269 | |
4796f457 BF |
4270 | if (exp->ex_nflavors) { |
4271 | flavs = exp->ex_flavors; | |
4272 | nflavs = exp->ex_nflavors; | |
4273 | } else { /* Handling of some defaults in absence of real secinfo: */ | |
4274 | flavs = def_flavs; | |
4275 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { | |
4276 | nflavs = 2; | |
4277 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; | |
4278 | flavs[1].pseudoflavor = RPC_AUTH_NULL; | |
4279 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { | |
4280 | nflavs = 1; | |
4281 | flavs[0].pseudoflavor | |
4282 | = svcauth_gss_flavor(exp->ex_client); | |
4283 | } else { | |
4284 | nflavs = 1; | |
4285 | flavs[0].pseudoflavor | |
4286 | = exp->ex_client->flavour->flavour; | |
4287 | } | |
4288 | } | |
4289 | ||
676e4ebd | 4290 | supported = 0; |
d0a381dd BF |
4291 | p = xdr_reserve_space(xdr, 4); |
4292 | if (!p) | |
bac966d6 | 4293 | return nfserr_resource; |
676e4ebd | 4294 | flavorsp = p++; /* to be backfilled later */ |
676e4ebd | 4295 | |
4796f457 | 4296 | for (i = 0; i < nflavs; i++) { |
676e4ebd | 4297 | rpc_authflavor_t pf = flavs[i].pseudoflavor; |
a77c806f | 4298 | struct rpcsec_gss_info info; |
dcb488a3 | 4299 | |
676e4ebd CL |
4300 | if (rpcauth_get_gssinfo(pf, &info) == 0) { |
4301 | supported++; | |
d0a381dd BF |
4302 | p = xdr_reserve_space(xdr, 4 + 4 + |
4303 | XDR_LEN(info.oid.len) + 4 + 4); | |
4304 | if (!p) | |
bac966d6 | 4305 | return nfserr_resource; |
c373b0a4 | 4306 | *p++ = cpu_to_be32(RPC_AUTH_GSS); |
0c0c267b | 4307 | p = xdr_encode_opaque(p, info.oid.data, info.oid.len); |
c373b0a4 BF |
4308 | *p++ = cpu_to_be32(info.qop); |
4309 | *p++ = cpu_to_be32(info.service); | |
676e4ebd CL |
4310 | } else if (pf < RPC_AUTH_MAXFLAVOR) { |
4311 | supported++; | |
d0a381dd BF |
4312 | p = xdr_reserve_space(xdr, 4); |
4313 | if (!p) | |
bac966d6 | 4314 | return nfserr_resource; |
c373b0a4 | 4315 | *p++ = cpu_to_be32(pf); |
676e4ebd CL |
4316 | } else { |
4317 | if (report) | |
4318 | pr_warn("NFS: SECINFO: security flavor %u " | |
4319 | "is not supported\n", pf); | |
dcb488a3 AA |
4320 | } |
4321 | } | |
a77c806f | 4322 | |
676e4ebd CL |
4323 | if (nflavs != supported) |
4324 | report = false; | |
4325 | *flavorsp = htonl(supported); | |
bac966d6 | 4326 | return 0; |
dcb488a3 AA |
4327 | } |
4328 | ||
22b6dee8 MJ |
4329 | static __be32 |
4330 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4331 | struct nfsd4_secinfo *secinfo) | |
4332 | { | |
d0a381dd BF |
4333 | struct xdr_stream *xdr = &resp->xdr; |
4334 | ||
bac966d6 | 4335 | return nfsd4_do_encode_secinfo(xdr, secinfo->si_exp); |
22b6dee8 MJ |
4336 | } |
4337 | ||
4338 | static __be32 | |
4339 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4340 | struct nfsd4_secinfo_no_name *secinfo) | |
4341 | { | |
d0a381dd BF |
4342 | struct xdr_stream *xdr = &resp->xdr; |
4343 | ||
bac966d6 | 4344 | return nfsd4_do_encode_secinfo(xdr, secinfo->sin_exp); |
22b6dee8 MJ |
4345 | } |
4346 | ||
1da177e4 LT |
4347 | /* |
4348 | * The SETATTR encode routine is special -- it always encodes a bitmap, | |
4349 | * regardless of the error status. | |
4350 | */ | |
695e12f8 | 4351 | static __be32 |
b37ad28b | 4352 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
1da177e4 | 4353 | { |
d0a381dd | 4354 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 4355 | __be32 *p; |
1da177e4 | 4356 | |
d0a381dd BF |
4357 | p = xdr_reserve_space(xdr, 16); |
4358 | if (!p) | |
4359 | return nfserr_resource; | |
1da177e4 | 4360 | if (nfserr) { |
c373b0a4 BF |
4361 | *p++ = cpu_to_be32(3); |
4362 | *p++ = cpu_to_be32(0); | |
4363 | *p++ = cpu_to_be32(0); | |
4364 | *p++ = cpu_to_be32(0); | |
1da177e4 LT |
4365 | } |
4366 | else { | |
c373b0a4 BF |
4367 | *p++ = cpu_to_be32(3); |
4368 | *p++ = cpu_to_be32(setattr->sa_bmval[0]); | |
4369 | *p++ = cpu_to_be32(setattr->sa_bmval[1]); | |
4370 | *p++ = cpu_to_be32(setattr->sa_bmval[2]); | |
1da177e4 | 4371 | } |
695e12f8 | 4372 | return nfserr; |
1da177e4 LT |
4373 | } |
4374 | ||
695e12f8 | 4375 | static __be32 |
b37ad28b | 4376 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
1da177e4 | 4377 | { |
d0a381dd | 4378 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 4379 | __be32 *p; |
1da177e4 LT |
4380 | |
4381 | if (!nfserr) { | |
d0a381dd BF |
4382 | p = xdr_reserve_space(xdr, 8 + NFS4_VERIFIER_SIZE); |
4383 | if (!p) | |
4384 | return nfserr_resource; | |
0c0c267b BF |
4385 | p = xdr_encode_opaque_fixed(p, &scd->se_clientid, 8); |
4386 | p = xdr_encode_opaque_fixed(p, &scd->se_confirm, | |
4387 | NFS4_VERIFIER_SIZE); | |
1da177e4 LT |
4388 | } |
4389 | else if (nfserr == nfserr_clid_inuse) { | |
d0a381dd BF |
4390 | p = xdr_reserve_space(xdr, 8); |
4391 | if (!p) | |
4392 | return nfserr_resource; | |
c373b0a4 BF |
4393 | *p++ = cpu_to_be32(0); |
4394 | *p++ = cpu_to_be32(0); | |
1da177e4 | 4395 | } |
695e12f8 | 4396 | return nfserr; |
1da177e4 LT |
4397 | } |
4398 | ||
695e12f8 | 4399 | static __be32 |
b37ad28b | 4400 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
1da177e4 | 4401 | { |
d0a381dd | 4402 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 4403 | __be32 *p; |
1da177e4 | 4404 | |
bac966d6 BF |
4405 | p = xdr_reserve_space(xdr, 16); |
4406 | if (!p) | |
4407 | return nfserr_resource; | |
4408 | *p++ = cpu_to_be32(write->wr_bytes_written); | |
4409 | *p++ = cpu_to_be32(write->wr_how_written); | |
4410 | p = xdr_encode_opaque_fixed(p, write->wr_verifier.data, | |
4411 | NFS4_VERIFIER_SIZE); | |
4412 | return 0; | |
1da177e4 LT |
4413 | } |
4414 | ||
2db134eb | 4415 | static __be32 |
57b7b43b | 4416 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
4417 | struct nfsd4_exchange_id *exid) |
4418 | { | |
d0a381dd | 4419 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 4420 | __be32 *p; |
0733d213 AA |
4421 | char *major_id; |
4422 | char *server_scope; | |
4423 | int major_id_sz; | |
4424 | int server_scope_sz; | |
4425 | uint64_t minor_id = 0; | |
7627d7dc | 4426 | struct nfsd_net *nn = net_generic(SVC_NET(resp->rqstp), nfsd_net_id); |
0733d213 | 4427 | |
7627d7dc SM |
4428 | major_id = nn->nfsd_name; |
4429 | major_id_sz = strlen(nn->nfsd_name); | |
4430 | server_scope = nn->nfsd_name; | |
4431 | server_scope_sz = strlen(nn->nfsd_name); | |
0733d213 | 4432 | |
d0a381dd | 4433 | p = xdr_reserve_space(xdr, |
0733d213 AA |
4434 | 8 /* eir_clientid */ + |
4435 | 4 /* eir_sequenceid */ + | |
4436 | 4 /* eir_flags */ + | |
a8bb84bc | 4437 | 4 /* spr_how */); |
d0a381dd BF |
4438 | if (!p) |
4439 | return nfserr_resource; | |
0733d213 | 4440 | |
0c0c267b | 4441 | p = xdr_encode_opaque_fixed(p, &exid->clientid, 8); |
c373b0a4 BF |
4442 | *p++ = cpu_to_be32(exid->seqid); |
4443 | *p++ = cpu_to_be32(exid->flags); | |
0733d213 | 4444 | |
c373b0a4 | 4445 | *p++ = cpu_to_be32(exid->spa_how); |
a8bb84bc | 4446 | |
57266a6e BF |
4447 | switch (exid->spa_how) { |
4448 | case SP4_NONE: | |
4449 | break; | |
4450 | case SP4_MACH_CRED: | |
4451 | /* spo_must_enforce bitmap: */ | |
bac966d6 | 4452 | nfserr = nfsd4_encode_bitmap(xdr, |
ed941643 AE |
4453 | exid->spo_must_enforce[0], |
4454 | exid->spo_must_enforce[1], | |
4455 | exid->spo_must_enforce[2]); | |
bac966d6 BF |
4456 | if (nfserr) |
4457 | return nfserr; | |
ed941643 | 4458 | /* spo_must_allow bitmap: */ |
bac966d6 | 4459 | nfserr = nfsd4_encode_bitmap(xdr, |
ed941643 AE |
4460 | exid->spo_must_allow[0], |
4461 | exid->spo_must_allow[1], | |
4462 | exid->spo_must_allow[2]); | |
bac966d6 BF |
4463 | if (nfserr) |
4464 | return nfserr; | |
57266a6e BF |
4465 | break; |
4466 | default: | |
4467 | WARN_ON_ONCE(1); | |
4468 | } | |
0733d213 | 4469 | |
d0a381dd | 4470 | p = xdr_reserve_space(xdr, |
a8bb84bc KM |
4471 | 8 /* so_minor_id */ + |
4472 | 4 /* so_major_id.len */ + | |
4473 | (XDR_QUADLEN(major_id_sz) * 4) + | |
4474 | 4 /* eir_server_scope.len */ + | |
4475 | (XDR_QUADLEN(server_scope_sz) * 4) + | |
4476 | 4 /* eir_server_impl_id.count (0) */); | |
d0a381dd BF |
4477 | if (!p) |
4478 | return nfserr_resource; | |
a8bb84bc | 4479 | |
0733d213 | 4480 | /* The server_owner struct */ |
b64c7f3b | 4481 | p = xdr_encode_hyper(p, minor_id); /* Minor id */ |
0733d213 | 4482 | /* major id */ |
0c0c267b | 4483 | p = xdr_encode_opaque(p, major_id, major_id_sz); |
0733d213 AA |
4484 | |
4485 | /* Server scope */ | |
0c0c267b | 4486 | p = xdr_encode_opaque(p, server_scope, server_scope_sz); |
0733d213 AA |
4487 | |
4488 | /* Implementation id */ | |
c373b0a4 | 4489 | *p++ = cpu_to_be32(0); /* zero length nfs_impl_id4 array */ |
0733d213 | 4490 | return 0; |
2db134eb AA |
4491 | } |
4492 | ||
4493 | static __be32 | |
57b7b43b | 4494 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
4495 | struct nfsd4_create_session *sess) |
4496 | { | |
d0a381dd | 4497 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 4498 | __be32 *p; |
ec6b5d7b | 4499 | |
d0a381dd BF |
4500 | p = xdr_reserve_space(xdr, 24); |
4501 | if (!p) | |
4502 | return nfserr_resource; | |
0c0c267b BF |
4503 | p = xdr_encode_opaque_fixed(p, sess->sessionid.data, |
4504 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
4505 | *p++ = cpu_to_be32(sess->seqid); |
4506 | *p++ = cpu_to_be32(sess->flags); | |
ec6b5d7b | 4507 | |
d0a381dd BF |
4508 | p = xdr_reserve_space(xdr, 28); |
4509 | if (!p) | |
4510 | return nfserr_resource; | |
c373b0a4 BF |
4511 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
4512 | *p++ = cpu_to_be32(sess->fore_channel.maxreq_sz); | |
4513 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_sz); | |
4514 | *p++ = cpu_to_be32(sess->fore_channel.maxresp_cached); | |
4515 | *p++ = cpu_to_be32(sess->fore_channel.maxops); | |
4516 | *p++ = cpu_to_be32(sess->fore_channel.maxreqs); | |
4517 | *p++ = cpu_to_be32(sess->fore_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
4518 | |
4519 | if (sess->fore_channel.nr_rdma_attrs) { | |
d0a381dd BF |
4520 | p = xdr_reserve_space(xdr, 4); |
4521 | if (!p) | |
4522 | return nfserr_resource; | |
c373b0a4 | 4523 | *p++ = cpu_to_be32(sess->fore_channel.rdma_attrs); |
ec6b5d7b AA |
4524 | } |
4525 | ||
d0a381dd BF |
4526 | p = xdr_reserve_space(xdr, 28); |
4527 | if (!p) | |
4528 | return nfserr_resource; | |
c373b0a4 BF |
4529 | *p++ = cpu_to_be32(0); /* headerpadsz */ |
4530 | *p++ = cpu_to_be32(sess->back_channel.maxreq_sz); | |
4531 | *p++ = cpu_to_be32(sess->back_channel.maxresp_sz); | |
4532 | *p++ = cpu_to_be32(sess->back_channel.maxresp_cached); | |
4533 | *p++ = cpu_to_be32(sess->back_channel.maxops); | |
4534 | *p++ = cpu_to_be32(sess->back_channel.maxreqs); | |
4535 | *p++ = cpu_to_be32(sess->back_channel.nr_rdma_attrs); | |
ec6b5d7b AA |
4536 | |
4537 | if (sess->back_channel.nr_rdma_attrs) { | |
d0a381dd BF |
4538 | p = xdr_reserve_space(xdr, 4); |
4539 | if (!p) | |
4540 | return nfserr_resource; | |
c373b0a4 | 4541 | *p++ = cpu_to_be32(sess->back_channel.rdma_attrs); |
ec6b5d7b AA |
4542 | } |
4543 | return 0; | |
2db134eb AA |
4544 | } |
4545 | ||
c47d832b | 4546 | static __be32 |
57b7b43b | 4547 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, |
2db134eb AA |
4548 | struct nfsd4_sequence *seq) |
4549 | { | |
d0a381dd | 4550 | struct xdr_stream *xdr = &resp->xdr; |
bc749ca4 | 4551 | __be32 *p; |
b85d4c01 | 4552 | |
d0a381dd BF |
4553 | p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN + 20); |
4554 | if (!p) | |
4555 | return nfserr_resource; | |
0c0c267b BF |
4556 | p = xdr_encode_opaque_fixed(p, seq->sessionid.data, |
4557 | NFS4_MAX_SESSIONID_LEN); | |
c373b0a4 BF |
4558 | *p++ = cpu_to_be32(seq->seqid); |
4559 | *p++ = cpu_to_be32(seq->slotid); | |
b7d7ca35 | 4560 | /* Note slotid's are numbered from zero: */ |
c373b0a4 BF |
4561 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_highest_slotid */ |
4562 | *p++ = cpu_to_be32(seq->maxslots - 1); /* sr_target_highest_slotid */ | |
4563 | *p++ = cpu_to_be32(seq->status_flags); | |
b85d4c01 | 4564 | |
f5236013 | 4565 | resp->cstate.data_offset = xdr->buf->len; /* DRC cache data pointer */ |
b85d4c01 | 4566 | return 0; |
2db134eb AA |
4567 | } |
4568 | ||
2355c596 | 4569 | static __be32 |
57b7b43b | 4570 | nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, |
17456804 BS |
4571 | struct nfsd4_test_stateid *test_stateid) |
4572 | { | |
d0a381dd | 4573 | struct xdr_stream *xdr = &resp->xdr; |
03cfb420 | 4574 | struct nfsd4_test_stateid_id *stateid, *next; |
17456804 | 4575 | __be32 *p; |
17456804 | 4576 | |
d0a381dd BF |
4577 | p = xdr_reserve_space(xdr, 4 + (4 * test_stateid->ts_num_ids)); |
4578 | if (!p) | |
4579 | return nfserr_resource; | |
17456804 | 4580 | *p++ = htonl(test_stateid->ts_num_ids); |
17456804 | 4581 | |
03cfb420 | 4582 | list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) { |
02f5fde5 | 4583 | *p++ = stateid->ts_id_status; |
17456804 | 4584 | } |
17456804 | 4585 | |
bac966d6 | 4586 | return 0; |
17456804 BS |
4587 | } |
4588 | ||
9cf514cc CH |
4589 | #ifdef CONFIG_NFSD_PNFS |
4590 | static __be32 | |
4591 | nfsd4_encode_getdeviceinfo(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4592 | struct nfsd4_getdeviceinfo *gdev) | |
4593 | { | |
4594 | struct xdr_stream *xdr = &resp->xdr; | |
f961e3f2 | 4595 | const struct nfsd4_layout_ops *ops; |
9cf514cc CH |
4596 | u32 starting_len = xdr->buf->len, needed_len; |
4597 | __be32 *p; | |
4598 | ||
9cf514cc CH |
4599 | p = xdr_reserve_space(xdr, 4); |
4600 | if (!p) | |
bac966d6 | 4601 | return nfserr_resource; |
9cf514cc CH |
4602 | |
4603 | *p++ = cpu_to_be32(gdev->gd_layout_type); | |
4604 | ||
4605 | /* If maxcount is 0 then just update notifications */ | |
4606 | if (gdev->gd_maxcount != 0) { | |
f961e3f2 | 4607 | ops = nfsd4_layout_ops[gdev->gd_layout_type]; |
9cf514cc CH |
4608 | nfserr = ops->encode_getdeviceinfo(xdr, gdev); |
4609 | if (nfserr) { | |
4610 | /* | |
4611 | * We don't bother to burden the layout drivers with | |
4612 | * enforcing gd_maxcount, just tell the client to | |
4613 | * come back with a bigger buffer if it's not enough. | |
4614 | */ | |
4615 | if (xdr->buf->len + 4 > gdev->gd_maxcount) | |
4616 | goto toosmall; | |
bac966d6 | 4617 | return nfserr; |
9cf514cc CH |
4618 | } |
4619 | } | |
4620 | ||
9cf514cc CH |
4621 | if (gdev->gd_notify_types) { |
4622 | p = xdr_reserve_space(xdr, 4 + 4); | |
4623 | if (!p) | |
bac966d6 | 4624 | return nfserr_resource; |
9cf514cc CH |
4625 | *p++ = cpu_to_be32(1); /* bitmap length */ |
4626 | *p++ = cpu_to_be32(gdev->gd_notify_types); | |
4627 | } else { | |
4628 | p = xdr_reserve_space(xdr, 4); | |
4629 | if (!p) | |
bac966d6 | 4630 | return nfserr_resource; |
9cf514cc CH |
4631 | *p++ = 0; |
4632 | } | |
4633 | ||
bac966d6 | 4634 | return 0; |
9cf514cc CH |
4635 | toosmall: |
4636 | dprintk("%s: maxcount too small\n", __func__); | |
4637 | needed_len = xdr->buf->len + 4 /* notifications */; | |
4638 | xdr_truncate_encode(xdr, starting_len); | |
4639 | p = xdr_reserve_space(xdr, 4); | |
bac966d6 BF |
4640 | if (!p) |
4641 | return nfserr_resource; | |
4642 | *p++ = cpu_to_be32(needed_len); | |
4643 | return nfserr_toosmall; | |
9cf514cc CH |
4644 | } |
4645 | ||
4646 | static __be32 | |
4647 | nfsd4_encode_layoutget(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4648 | struct nfsd4_layoutget *lgp) | |
4649 | { | |
4650 | struct xdr_stream *xdr = &resp->xdr; | |
f961e3f2 | 4651 | const struct nfsd4_layout_ops *ops; |
9cf514cc CH |
4652 | __be32 *p; |
4653 | ||
9cf514cc CH |
4654 | p = xdr_reserve_space(xdr, 36 + sizeof(stateid_opaque_t)); |
4655 | if (!p) | |
bac966d6 | 4656 | return nfserr_resource; |
9cf514cc CH |
4657 | |
4658 | *p++ = cpu_to_be32(1); /* we always set return-on-close */ | |
4659 | *p++ = cpu_to_be32(lgp->lg_sid.si_generation); | |
4660 | p = xdr_encode_opaque_fixed(p, &lgp->lg_sid.si_opaque, | |
4661 | sizeof(stateid_opaque_t)); | |
4662 | ||
4663 | *p++ = cpu_to_be32(1); /* we always return a single layout */ | |
4664 | p = xdr_encode_hyper(p, lgp->lg_seg.offset); | |
4665 | p = xdr_encode_hyper(p, lgp->lg_seg.length); | |
4666 | *p++ = cpu_to_be32(lgp->lg_seg.iomode); | |
4667 | *p++ = cpu_to_be32(lgp->lg_layout_type); | |
4668 | ||
f961e3f2 | 4669 | ops = nfsd4_layout_ops[lgp->lg_layout_type]; |
bac966d6 | 4670 | return ops->encode_layoutget(xdr, lgp); |
9cf514cc CH |
4671 | } |
4672 | ||
4673 | static __be32 | |
4674 | nfsd4_encode_layoutcommit(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4675 | struct nfsd4_layoutcommit *lcp) | |
4676 | { | |
4677 | struct xdr_stream *xdr = &resp->xdr; | |
4678 | __be32 *p; | |
4679 | ||
9cf514cc CH |
4680 | p = xdr_reserve_space(xdr, 4); |
4681 | if (!p) | |
4682 | return nfserr_resource; | |
4683 | *p++ = cpu_to_be32(lcp->lc_size_chg); | |
4684 | if (lcp->lc_size_chg) { | |
4685 | p = xdr_reserve_space(xdr, 8); | |
4686 | if (!p) | |
4687 | return nfserr_resource; | |
4688 | p = xdr_encode_hyper(p, lcp->lc_newsize); | |
4689 | } | |
4690 | ||
bac966d6 | 4691 | return 0; |
9cf514cc CH |
4692 | } |
4693 | ||
4694 | static __be32 | |
4695 | nfsd4_encode_layoutreturn(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4696 | struct nfsd4_layoutreturn *lrp) | |
4697 | { | |
4698 | struct xdr_stream *xdr = &resp->xdr; | |
4699 | __be32 *p; | |
4700 | ||
9cf514cc CH |
4701 | p = xdr_reserve_space(xdr, 4); |
4702 | if (!p) | |
4703 | return nfserr_resource; | |
4704 | *p++ = cpu_to_be32(lrp->lrs_present); | |
4705 | if (lrp->lrs_present) | |
376675da | 4706 | return nfsd4_encode_stateid(xdr, &lrp->lr_sid); |
bac966d6 | 4707 | return 0; |
9cf514cc CH |
4708 | } |
4709 | #endif /* CONFIG_NFSD_PNFS */ | |
4710 | ||
29ae7f9d | 4711 | static __be32 |
e0639dc5 OK |
4712 | nfsd42_encode_write_res(struct nfsd4_compoundres *resp, |
4713 | struct nfsd42_write_res *write, bool sync) | |
29ae7f9d AS |
4714 | { |
4715 | __be32 *p; | |
e0639dc5 OK |
4716 | p = xdr_reserve_space(&resp->xdr, 4); |
4717 | if (!p) | |
4718 | return nfserr_resource; | |
29ae7f9d | 4719 | |
e0639dc5 OK |
4720 | if (sync) |
4721 | *p++ = cpu_to_be32(0); | |
4722 | else { | |
4723 | __be32 nfserr; | |
4724 | *p++ = cpu_to_be32(1); | |
4725 | nfserr = nfsd4_encode_stateid(&resp->xdr, &write->cb_stateid); | |
4726 | if (nfserr) | |
4727 | return nfserr; | |
4728 | } | |
4729 | p = xdr_reserve_space(&resp->xdr, 8 + 4 + NFS4_VERIFIER_SIZE); | |
29ae7f9d AS |
4730 | if (!p) |
4731 | return nfserr_resource; | |
4732 | ||
29ae7f9d AS |
4733 | p = xdr_encode_hyper(p, write->wr_bytes_written); |
4734 | *p++ = cpu_to_be32(write->wr_stable_how); | |
4735 | p = xdr_encode_opaque_fixed(p, write->wr_verifier.data, | |
4736 | NFS4_VERIFIER_SIZE); | |
4737 | return nfs_ok; | |
4738 | } | |
4739 | ||
51911868 OK |
4740 | static __be32 |
4741 | nfsd42_encode_nl4_server(struct nfsd4_compoundres *resp, struct nl4_server *ns) | |
4742 | { | |
4743 | struct xdr_stream *xdr = &resp->xdr; | |
4744 | struct nfs42_netaddr *addr; | |
4745 | __be32 *p; | |
4746 | ||
4747 | p = xdr_reserve_space(xdr, 4); | |
4748 | *p++ = cpu_to_be32(ns->nl4_type); | |
4749 | ||
4750 | switch (ns->nl4_type) { | |
4751 | case NL4_NETADDR: | |
4752 | addr = &ns->u.nl4_addr; | |
4753 | ||
4754 | /* netid_len, netid, uaddr_len, uaddr (port included | |
4755 | * in RPCBIND_MAXUADDRLEN) | |
4756 | */ | |
4757 | p = xdr_reserve_space(xdr, | |
4758 | 4 /* netid len */ + | |
4759 | (XDR_QUADLEN(addr->netid_len) * 4) + | |
4760 | 4 /* uaddr len */ + | |
4761 | (XDR_QUADLEN(addr->addr_len) * 4)); | |
4762 | if (!p) | |
4763 | return nfserr_resource; | |
4764 | ||
4765 | *p++ = cpu_to_be32(addr->netid_len); | |
4766 | p = xdr_encode_opaque_fixed(p, addr->netid, | |
4767 | addr->netid_len); | |
4768 | *p++ = cpu_to_be32(addr->addr_len); | |
4769 | p = xdr_encode_opaque_fixed(p, addr->addr, | |
4770 | addr->addr_len); | |
4771 | break; | |
4772 | default: | |
4773 | WARN_ON_ONCE(ns->nl4_type != NL4_NETADDR); | |
4774 | return nfserr_inval; | |
4775 | } | |
4776 | ||
4777 | return 0; | |
4778 | } | |
4779 | ||
29ae7f9d AS |
4780 | static __be32 |
4781 | nfsd4_encode_copy(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4782 | struct nfsd4_copy *copy) | |
4783 | { | |
4784 | __be32 *p; | |
4785 | ||
e0639dc5 | 4786 | nfserr = nfsd42_encode_write_res(resp, ©->cp_res, |
e8febea7 | 4787 | !!copy->cp_synchronous); |
bac966d6 BF |
4788 | if (nfserr) |
4789 | return nfserr; | |
29ae7f9d | 4790 | |
bac966d6 | 4791 | p = xdr_reserve_space(&resp->xdr, 4 + 4); |
edcc8452 | 4792 | *p++ = xdr_one; /* cr_consecutive */ |
bac966d6 BF |
4793 | *p++ = cpu_to_be32(copy->cp_synchronous); |
4794 | return 0; | |
29ae7f9d AS |
4795 | } |
4796 | ||
6308bc98 OK |
4797 | static __be32 |
4798 | nfsd4_encode_offload_status(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4799 | struct nfsd4_offload_status *os) | |
4800 | { | |
4801 | struct xdr_stream *xdr = &resp->xdr; | |
4802 | __be32 *p; | |
4803 | ||
4804 | p = xdr_reserve_space(xdr, 8 + 4); | |
4805 | if (!p) | |
4806 | return nfserr_resource; | |
4807 | p = xdr_encode_hyper(p, os->count); | |
4808 | *p++ = cpu_to_be32(0); | |
528b8493 AS |
4809 | return nfserr; |
4810 | } | |
4811 | ||
4812 | static __be32 | |
4813 | nfsd4_encode_read_plus_data(struct nfsd4_compoundres *resp, | |
4814 | struct nfsd4_read *read, | |
9f0b5792 AS |
4815 | unsigned long *maxcount, u32 *eof, |
4816 | loff_t *pos) | |
528b8493 AS |
4817 | { |
4818 | struct xdr_stream *xdr = &resp->xdr; | |
4819 | struct file *file = read->rd_nf->nf_file; | |
4820 | int starting_len = xdr->buf->len; | |
9f0b5792 | 4821 | loff_t hole_pos; |
528b8493 AS |
4822 | __be32 nfserr; |
4823 | __be32 *p, tmp; | |
4824 | __be64 tmp64; | |
4825 | ||
9f0b5792 | 4826 | hole_pos = pos ? *pos : vfs_llseek(file, read->rd_offset, SEEK_HOLE); |
2db27992 | 4827 | if (hole_pos > read->rd_offset) |
278765ea AS |
4828 | *maxcount = min_t(unsigned long, *maxcount, hole_pos - read->rd_offset); |
4829 | *maxcount = min_t(unsigned long, *maxcount, (xdr->buf->buflen - xdr->buf->len)); | |
528b8493 AS |
4830 | |
4831 | /* Content type, offset, byte count */ | |
4832 | p = xdr_reserve_space(xdr, 4 + 8 + 4); | |
4833 | if (!p) | |
4834 | return nfserr_resource; | |
4835 | ||
278765ea | 4836 | read->rd_vlen = xdr_reserve_space_vec(xdr, resp->rqstp->rq_vec, *maxcount); |
528b8493 AS |
4837 | if (read->rd_vlen < 0) |
4838 | return nfserr_resource; | |
4839 | ||
4840 | nfserr = nfsd_readv(resp->rqstp, read->rd_fhp, file, read->rd_offset, | |
278765ea | 4841 | resp->rqstp->rq_vec, read->rd_vlen, maxcount, eof); |
528b8493 AS |
4842 | if (nfserr) |
4843 | return nfserr; | |
4844 | ||
4845 | tmp = htonl(NFS4_CONTENT_DATA); | |
4846 | write_bytes_to_xdr_buf(xdr->buf, starting_len, &tmp, 4); | |
4847 | tmp64 = cpu_to_be64(read->rd_offset); | |
4848 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 4, &tmp64, 8); | |
278765ea | 4849 | tmp = htonl(*maxcount); |
528b8493 AS |
4850 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 12, &tmp, 4); |
4851 | return nfs_ok; | |
4852 | } | |
4853 | ||
2db27992 AS |
4854 | static __be32 |
4855 | nfsd4_encode_read_plus_hole(struct nfsd4_compoundres *resp, | |
4856 | struct nfsd4_read *read, | |
278765ea | 4857 | unsigned long *maxcount, u32 *eof) |
2db27992 AS |
4858 | { |
4859 | struct file *file = read->rd_nf->nf_file; | |
278765ea | 4860 | loff_t data_pos = vfs_llseek(file, read->rd_offset, SEEK_DATA); |
9f0b5792 | 4861 | loff_t f_size = i_size_read(file_inode(file)); |
278765ea | 4862 | unsigned long count; |
2db27992 AS |
4863 | __be32 *p; |
4864 | ||
278765ea | 4865 | if (data_pos == -ENXIO) |
9f0b5792 AS |
4866 | data_pos = f_size; |
4867 | else if (data_pos <= read->rd_offset || (data_pos < f_size && data_pos % PAGE_SIZE)) | |
4868 | return nfsd4_encode_read_plus_data(resp, read, maxcount, eof, &f_size); | |
278765ea AS |
4869 | count = data_pos - read->rd_offset; |
4870 | ||
2db27992 AS |
4871 | /* Content type, offset, byte count */ |
4872 | p = xdr_reserve_space(&resp->xdr, 4 + 8 + 8); | |
4873 | if (!p) | |
4874 | return nfserr_resource; | |
4875 | ||
4876 | *p++ = htonl(NFS4_CONTENT_HOLE); | |
4877 | p = xdr_encode_hyper(p, read->rd_offset); | |
278765ea | 4878 | p = xdr_encode_hyper(p, count); |
2db27992 | 4879 | |
9f0b5792 | 4880 | *eof = (read->rd_offset + count) >= f_size; |
278765ea | 4881 | *maxcount = min_t(unsigned long, count, *maxcount); |
2db27992 AS |
4882 | return nfs_ok; |
4883 | } | |
4884 | ||
528b8493 AS |
4885 | static __be32 |
4886 | nfsd4_encode_read_plus(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4887 | struct nfsd4_read *read) | |
4888 | { | |
278765ea | 4889 | unsigned long maxcount, count; |
528b8493 AS |
4890 | struct xdr_stream *xdr = &resp->xdr; |
4891 | struct file *file; | |
4892 | int starting_len = xdr->buf->len; | |
9f0b5792 | 4893 | int last_segment = xdr->buf->len; |
528b8493 AS |
4894 | int segments = 0; |
4895 | __be32 *p, tmp; | |
9f0b5792 | 4896 | bool is_data; |
2db27992 | 4897 | loff_t pos; |
528b8493 AS |
4898 | u32 eof; |
4899 | ||
4900 | if (nfserr) | |
4901 | return nfserr; | |
4902 | file = read->rd_nf->nf_file; | |
4903 | ||
4904 | /* eof flag, segment count */ | |
4905 | p = xdr_reserve_space(xdr, 4 + 4); | |
4906 | if (!p) | |
4907 | return nfserr_resource; | |
4908 | xdr_commit_encode(xdr); | |
4909 | ||
4910 | maxcount = svc_max_payload(resp->rqstp); | |
4911 | maxcount = min_t(unsigned long, maxcount, | |
4912 | (xdr->buf->buflen - xdr->buf->len)); | |
4913 | maxcount = min_t(unsigned long, maxcount, read->rd_length); | |
278765ea | 4914 | count = maxcount; |
528b8493 AS |
4915 | |
4916 | eof = read->rd_offset >= i_size_read(file_inode(file)); | |
2db27992 AS |
4917 | if (eof) |
4918 | goto out; | |
4919 | ||
9f0b5792 AS |
4920 | pos = vfs_llseek(file, read->rd_offset, SEEK_HOLE); |
4921 | is_data = pos > read->rd_offset; | |
2db27992 | 4922 | |
9f0b5792 | 4923 | while (count > 0 && !eof) { |
278765ea | 4924 | maxcount = count; |
9f0b5792 AS |
4925 | if (is_data) |
4926 | nfserr = nfsd4_encode_read_plus_data(resp, read, &maxcount, &eof, | |
4927 | segments == 0 ? &pos : NULL); | |
4928 | else | |
4929 | nfserr = nfsd4_encode_read_plus_hole(resp, read, &maxcount, &eof); | |
278765ea AS |
4930 | if (nfserr) |
4931 | goto out; | |
4932 | count -= maxcount; | |
4933 | read->rd_offset += maxcount; | |
9f0b5792 AS |
4934 | is_data = !is_data; |
4935 | last_segment = xdr->buf->len; | |
528b8493 AS |
4936 | segments++; |
4937 | } | |
4938 | ||
2db27992 | 4939 | out: |
278765ea | 4940 | if (nfserr && segments == 0) |
528b8493 AS |
4941 | xdr_truncate_encode(xdr, starting_len); |
4942 | else { | |
4943 | tmp = htonl(eof); | |
4944 | write_bytes_to_xdr_buf(xdr->buf, starting_len, &tmp, 4); | |
4945 | tmp = htonl(segments); | |
4946 | write_bytes_to_xdr_buf(xdr->buf, starting_len + 4, &tmp, 4); | |
9f0b5792 AS |
4947 | if (nfserr) { |
4948 | xdr_truncate_encode(xdr, last_segment); | |
4949 | nfserr = nfs_ok; | |
4950 | } | |
528b8493 | 4951 | } |
6308bc98 OK |
4952 | |
4953 | return nfserr; | |
4954 | } | |
4955 | ||
51911868 OK |
4956 | static __be32 |
4957 | nfsd4_encode_copy_notify(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4958 | struct nfsd4_copy_notify *cn) | |
4959 | { | |
4960 | struct xdr_stream *xdr = &resp->xdr; | |
4961 | __be32 *p; | |
4962 | ||
4963 | if (nfserr) | |
4964 | return nfserr; | |
4965 | ||
4966 | /* 8 sec, 4 nsec */ | |
4967 | p = xdr_reserve_space(xdr, 12); | |
4968 | if (!p) | |
4969 | return nfserr_resource; | |
4970 | ||
4971 | /* cnr_lease_time */ | |
4972 | p = xdr_encode_hyper(p, cn->cpn_sec); | |
4973 | *p++ = cpu_to_be32(cn->cpn_nsec); | |
4974 | ||
4975 | /* cnr_stateid */ | |
4976 | nfserr = nfsd4_encode_stateid(xdr, &cn->cpn_cnr_stateid); | |
4977 | if (nfserr) | |
4978 | return nfserr; | |
4979 | ||
4980 | /* cnr_src.nl_nsvr */ | |
4981 | p = xdr_reserve_space(xdr, 4); | |
4982 | if (!p) | |
4983 | return nfserr_resource; | |
4984 | ||
4985 | *p++ = cpu_to_be32(1); | |
4986 | ||
4987 | return nfsd42_encode_nl4_server(resp, &cn->cpn_src); | |
4988 | } | |
4989 | ||
24bab491 AS |
4990 | static __be32 |
4991 | nfsd4_encode_seek(struct nfsd4_compoundres *resp, __be32 nfserr, | |
4992 | struct nfsd4_seek *seek) | |
4993 | { | |
4994 | __be32 *p; | |
4995 | ||
24bab491 AS |
4996 | p = xdr_reserve_space(&resp->xdr, 4 + 8); |
4997 | *p++ = cpu_to_be32(seek->seek_eof); | |
4998 | p = xdr_encode_hyper(p, seek->seek_pos); | |
4999 | ||
bac966d6 | 5000 | return 0; |
24bab491 AS |
5001 | } |
5002 | ||
695e12f8 BH |
5003 | static __be32 |
5004 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) | |
5005 | { | |
5006 | return nfserr; | |
5007 | } | |
5008 | ||
23e50fe3 FL |
5009 | /* |
5010 | * Encode kmalloc-ed buffer in to XDR stream. | |
5011 | */ | |
b9a49237 | 5012 | static __be32 |
23e50fe3 FL |
5013 | nfsd4_vbuf_to_stream(struct xdr_stream *xdr, char *buf, u32 buflen) |
5014 | { | |
5015 | u32 cplen; | |
5016 | __be32 *p; | |
5017 | ||
5018 | cplen = min_t(unsigned long, buflen, | |
5019 | ((void *)xdr->end - (void *)xdr->p)); | |
5020 | p = xdr_reserve_space(xdr, cplen); | |
5021 | if (!p) | |
5022 | return nfserr_resource; | |
5023 | ||
5024 | memcpy(p, buf, cplen); | |
5025 | buf += cplen; | |
5026 | buflen -= cplen; | |
5027 | ||
5028 | while (buflen) { | |
5029 | cplen = min_t(u32, buflen, PAGE_SIZE); | |
5030 | p = xdr_reserve_space(xdr, cplen); | |
5031 | if (!p) | |
5032 | return nfserr_resource; | |
5033 | ||
5034 | memcpy(p, buf, cplen); | |
5035 | ||
5036 | if (cplen < PAGE_SIZE) { | |
5037 | /* | |
5038 | * We're done, with a length that wasn't page | |
5039 | * aligned, so possibly not word aligned. Pad | |
5040 | * any trailing bytes with 0. | |
5041 | */ | |
5042 | xdr_encode_opaque_fixed(p, NULL, cplen); | |
5043 | break; | |
5044 | } | |
5045 | ||
5046 | buflen -= PAGE_SIZE; | |
5047 | buf += PAGE_SIZE; | |
5048 | } | |
5049 | ||
5050 | return 0; | |
5051 | } | |
5052 | ||
5053 | static __be32 | |
5054 | nfsd4_encode_getxattr(struct nfsd4_compoundres *resp, __be32 nfserr, | |
5055 | struct nfsd4_getxattr *getxattr) | |
5056 | { | |
5057 | struct xdr_stream *xdr = &resp->xdr; | |
5058 | __be32 *p, err; | |
5059 | ||
5060 | p = xdr_reserve_space(xdr, 4); | |
5061 | if (!p) | |
5062 | return nfserr_resource; | |
5063 | ||
5064 | *p = cpu_to_be32(getxattr->getxa_len); | |
5065 | ||
5066 | if (getxattr->getxa_len == 0) | |
5067 | return 0; | |
5068 | ||
5069 | err = nfsd4_vbuf_to_stream(xdr, getxattr->getxa_buf, | |
5070 | getxattr->getxa_len); | |
5071 | ||
5072 | kvfree(getxattr->getxa_buf); | |
5073 | ||
5074 | return err; | |
5075 | } | |
5076 | ||
5077 | static __be32 | |
5078 | nfsd4_encode_setxattr(struct nfsd4_compoundres *resp, __be32 nfserr, | |
5079 | struct nfsd4_setxattr *setxattr) | |
5080 | { | |
5081 | struct xdr_stream *xdr = &resp->xdr; | |
5082 | __be32 *p; | |
5083 | ||
5084 | p = xdr_reserve_space(xdr, 20); | |
5085 | if (!p) | |
5086 | return nfserr_resource; | |
5087 | ||
5088 | encode_cinfo(p, &setxattr->setxa_cinfo); | |
5089 | ||
5090 | return 0; | |
5091 | } | |
5092 | ||
5093 | /* | |
5094 | * See if there are cookie values that can be rejected outright. | |
5095 | */ | |
5096 | static __be32 | |
5097 | nfsd4_listxattr_validate_cookie(struct nfsd4_listxattrs *listxattrs, | |
5098 | u32 *offsetp) | |
5099 | { | |
5100 | u64 cookie = listxattrs->lsxa_cookie; | |
5101 | ||
5102 | /* | |
5103 | * If the cookie is larger than the maximum number we can fit | |
5104 | * in either the buffer we just got back from vfs_listxattr, or, | |
5105 | * XDR-encoded, in the return buffer, it's invalid. | |
5106 | */ | |
5107 | if (cookie > (listxattrs->lsxa_len) / (XATTR_USER_PREFIX_LEN + 2)) | |
5108 | return nfserr_badcookie; | |
5109 | ||
5110 | if (cookie > (listxattrs->lsxa_maxcount / | |
5111 | (XDR_QUADLEN(XATTR_USER_PREFIX_LEN + 2) + 4))) | |
5112 | return nfserr_badcookie; | |
5113 | ||
5114 | *offsetp = (u32)cookie; | |
5115 | return 0; | |
5116 | } | |
5117 | ||
5118 | static __be32 | |
5119 | nfsd4_encode_listxattrs(struct nfsd4_compoundres *resp, __be32 nfserr, | |
5120 | struct nfsd4_listxattrs *listxattrs) | |
5121 | { | |
5122 | struct xdr_stream *xdr = &resp->xdr; | |
5123 | u32 cookie_offset, count_offset, eof; | |
5124 | u32 left, xdrleft, slen, count; | |
5125 | u32 xdrlen, offset; | |
5126 | u64 cookie; | |
5127 | char *sp; | |
b9a49237 | 5128 | __be32 status, tmp; |
23e50fe3 FL |
5129 | __be32 *p; |
5130 | u32 nuser; | |
5131 | ||
5132 | eof = 1; | |
5133 | ||
5134 | status = nfsd4_listxattr_validate_cookie(listxattrs, &offset); | |
5135 | if (status) | |
5136 | goto out; | |
5137 | ||
5138 | /* | |
5139 | * Reserve space for the cookie and the name array count. Record | |
5140 | * the offsets to save them later. | |
5141 | */ | |
5142 | cookie_offset = xdr->buf->len; | |
5143 | count_offset = cookie_offset + 8; | |
5144 | p = xdr_reserve_space(xdr, 12); | |
5145 | if (!p) { | |
5146 | status = nfserr_resource; | |
5147 | goto out; | |
5148 | } | |
5149 | ||
5150 | count = 0; | |
5151 | left = listxattrs->lsxa_len; | |
5152 | sp = listxattrs->lsxa_buf; | |
5153 | nuser = 0; | |
5154 | ||
5155 | xdrleft = listxattrs->lsxa_maxcount; | |
5156 | ||
5157 | while (left > 0 && xdrleft > 0) { | |
5158 | slen = strlen(sp); | |
5159 | ||
5160 | /* | |
4cce11fa | 5161 | * Check if this is a "user." attribute, skip it if not. |
23e50fe3 FL |
5162 | */ |
5163 | if (strncmp(sp, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) | |
5164 | goto contloop; | |
5165 | ||
5166 | slen -= XATTR_USER_PREFIX_LEN; | |
5167 | xdrlen = 4 + ((slen + 3) & ~3); | |
5168 | if (xdrlen > xdrleft) { | |
5169 | if (count == 0) { | |
5170 | /* | |
5171 | * Can't even fit the first attribute name. | |
5172 | */ | |
5173 | status = nfserr_toosmall; | |
5174 | goto out; | |
5175 | } | |
5176 | eof = 0; | |
5177 | goto wreof; | |
5178 | } | |
5179 | ||
5180 | left -= XATTR_USER_PREFIX_LEN; | |
5181 | sp += XATTR_USER_PREFIX_LEN; | |
5182 | if (nuser++ < offset) | |
5183 | goto contloop; | |
5184 | ||
5185 | ||
5186 | p = xdr_reserve_space(xdr, xdrlen); | |
5187 | if (!p) { | |
5188 | status = nfserr_resource; | |
5189 | goto out; | |
5190 | } | |
5191 | ||
e2a1840e | 5192 | xdr_encode_opaque(p, sp, slen); |
23e50fe3 FL |
5193 | |
5194 | xdrleft -= xdrlen; | |
5195 | count++; | |
5196 | contloop: | |
5197 | sp += slen + 1; | |
5198 | left -= slen + 1; | |
5199 | } | |
5200 | ||
5201 | /* | |
5202 | * If there were user attributes to copy, but we didn't copy | |
5203 | * any, the offset was too large (e.g. the cookie was invalid). | |
5204 | */ | |
5205 | if (nuser > 0 && count == 0) { | |
5206 | status = nfserr_badcookie; | |
5207 | goto out; | |
5208 | } | |
5209 | ||
5210 | wreof: | |
5211 | p = xdr_reserve_space(xdr, 4); | |
5212 | if (!p) { | |
5213 | status = nfserr_resource; | |
5214 | goto out; | |
5215 | } | |
5216 | *p = cpu_to_be32(eof); | |
5217 | ||
5218 | cookie = offset + count; | |
5219 | ||
5220 | write_bytes_to_xdr_buf(xdr->buf, cookie_offset, &cookie, 8); | |
b9a49237 CL |
5221 | tmp = cpu_to_be32(count); |
5222 | write_bytes_to_xdr_buf(xdr->buf, count_offset, &tmp, 4); | |
23e50fe3 FL |
5223 | out: |
5224 | if (listxattrs->lsxa_len) | |
5225 | kvfree(listxattrs->lsxa_buf); | |
5226 | return status; | |
5227 | } | |
5228 | ||
5229 | static __be32 | |
5230 | nfsd4_encode_removexattr(struct nfsd4_compoundres *resp, __be32 nfserr, | |
5231 | struct nfsd4_removexattr *removexattr) | |
5232 | { | |
5233 | struct xdr_stream *xdr = &resp->xdr; | |
5234 | __be32 *p; | |
5235 | ||
5236 | p = xdr_reserve_space(xdr, 20); | |
5237 | if (!p) | |
5238 | return nfserr_resource; | |
5239 | ||
5240 | p = encode_cinfo(p, &removexattr->rmxa_cinfo); | |
5241 | return 0; | |
5242 | } | |
5243 | ||
695e12f8 BH |
5244 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); |
5245 | ||
2db134eb AA |
5246 | /* |
5247 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 | |
5248 | * since we don't need to filter out obsolete ops as this is | |
5249 | * done in the decoding phase. | |
5250 | */ | |
c1df609d | 5251 | static const nfsd4_enc nfsd4_enc_ops[] = { |
ad1060c8 BF |
5252 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
5253 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, | |
5254 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, | |
5255 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, | |
5256 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, | |
5257 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
5258 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, | |
5259 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, | |
5260 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, | |
5261 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, | |
5262 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, | |
5263 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, | |
5264 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, | |
5265 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, | |
5266 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
5267 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, | |
84f09f46 | 5268 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
ad1060c8 BF |
5269 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
5270 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, | |
5271 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
5272 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, | |
5273 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, | |
5274 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, | |
5275 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, | |
5276 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, | |
5277 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, | |
5278 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, | |
5279 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, | |
5280 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, | |
5281 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, | |
5282 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, | |
5283 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, | |
5284 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, | |
5285 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, | |
5286 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, | |
5287 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, | |
5288 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb AA |
5289 | |
5290 | /* NFSv4.1 operations */ | |
5291 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, | |
1d1bc8f2 | 5292 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
2db134eb AA |
5293 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
5294 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, | |
43212cc7 KM |
5295 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_noop, |
5296 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, | |
2db134eb | 5297 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
9cf514cc CH |
5298 | #ifdef CONFIG_NFSD_PNFS |
5299 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_getdeviceinfo, | |
5300 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
5301 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_layoutcommit, | |
5302 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_layoutget, | |
5303 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_layoutreturn, | |
5304 | #else | |
2db134eb AA |
5305 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, |
5306 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, | |
5307 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, | |
5308 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, | |
5309 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, | |
9cf514cc | 5310 | #endif |
22b6dee8 | 5311 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
2db134eb AA |
5312 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
5313 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, | |
17456804 | 5314 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, |
2db134eb AA |
5315 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
5316 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, | |
5317 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, | |
87a15a80 AS |
5318 | |
5319 | /* NFSv4.2 operations */ | |
5320 | [OP_ALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, | |
29ae7f9d | 5321 | [OP_COPY] = (nfsd4_enc)nfsd4_encode_copy, |
51911868 | 5322 | [OP_COPY_NOTIFY] = (nfsd4_enc)nfsd4_encode_copy_notify, |
87a15a80 AS |
5323 | [OP_DEALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, |
5324 | [OP_IO_ADVISE] = (nfsd4_enc)nfsd4_encode_noop, | |
5325 | [OP_LAYOUTERROR] = (nfsd4_enc)nfsd4_encode_noop, | |
5326 | [OP_LAYOUTSTATS] = (nfsd4_enc)nfsd4_encode_noop, | |
5327 | [OP_OFFLOAD_CANCEL] = (nfsd4_enc)nfsd4_encode_noop, | |
6308bc98 | 5328 | [OP_OFFLOAD_STATUS] = (nfsd4_enc)nfsd4_encode_offload_status, |
528b8493 | 5329 | [OP_READ_PLUS] = (nfsd4_enc)nfsd4_encode_read_plus, |
24bab491 | 5330 | [OP_SEEK] = (nfsd4_enc)nfsd4_encode_seek, |
87a15a80 | 5331 | [OP_WRITE_SAME] = (nfsd4_enc)nfsd4_encode_noop, |
ffa0160a | 5332 | [OP_CLONE] = (nfsd4_enc)nfsd4_encode_noop, |
23e50fe3 FL |
5333 | |
5334 | /* RFC 8276 extended atributes operations */ | |
5335 | [OP_GETXATTR] = (nfsd4_enc)nfsd4_encode_getxattr, | |
5336 | [OP_SETXATTR] = (nfsd4_enc)nfsd4_encode_setxattr, | |
5337 | [OP_LISTXATTRS] = (nfsd4_enc)nfsd4_encode_listxattrs, | |
5338 | [OP_REMOVEXATTR] = (nfsd4_enc)nfsd4_encode_removexattr, | |
695e12f8 BH |
5339 | }; |
5340 | ||
496c262c | 5341 | /* |
a8095f7e BF |
5342 | * Calculate whether we still have space to encode repsize bytes. |
5343 | * There are two considerations: | |
5344 | * - For NFS versions >=4.1, the size of the reply must stay within | |
5345 | * session limits | |
5346 | * - For all NFS versions, we must stay within limited preallocated | |
5347 | * buffer space. | |
496c262c | 5348 | * |
a8095f7e BF |
5349 | * This is called before the operation is processed, so can only provide |
5350 | * an upper estimate. For some nonidempotent operations (such as | |
5351 | * getattr), it's not necessarily a problem if that estimate is wrong, | |
5352 | * as we can fail it after processing without significant side effects. | |
496c262c | 5353 | */ |
a8095f7e | 5354 | __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 respsize) |
496c262c | 5355 | { |
67492c99 | 5356 | struct xdr_buf *buf = &resp->rqstp->rq_res; |
47ee5298 | 5357 | struct nfsd4_slot *slot = resp->cstate.slot; |
496c262c | 5358 | |
47ee5298 BF |
5359 | if (buf->len + respsize <= buf->buflen) |
5360 | return nfs_ok; | |
5361 | if (!nfsd4_has_session(&resp->cstate)) | |
ea8d7720 | 5362 | return nfserr_resource; |
47ee5298 BF |
5363 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) { |
5364 | WARN_ON_ONCE(1); | |
5365 | return nfserr_rep_too_big_to_cache; | |
ea8d7720 | 5366 | } |
47ee5298 | 5367 | return nfserr_rep_too_big; |
496c262c AA |
5368 | } |
5369 | ||
1da177e4 LT |
5370 | void |
5371 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) | |
5372 | { | |
082d4bd7 | 5373 | struct xdr_stream *xdr = &resp->xdr; |
9411b1d4 | 5374 | struct nfs4_stateowner *so = resp->cstate.replay_owner; |
5f4ab945 | 5375 | struct svc_rqst *rqstp = resp->rqstp; |
34b1744c | 5376 | const struct nfsd4_operation *opdesc = op->opdesc; |
082d4bd7 | 5377 | int post_err_offset; |
07d1f802 | 5378 | nfsd4_enc encoder; |
bc749ca4 | 5379 | __be32 *p; |
1da177e4 | 5380 | |
d0a381dd BF |
5381 | p = xdr_reserve_space(xdr, 8); |
5382 | if (!p) { | |
5383 | WARN_ON_ONCE(1); | |
5384 | return; | |
5385 | } | |
c373b0a4 | 5386 | *p++ = cpu_to_be32(op->opnum); |
082d4bd7 | 5387 | post_err_offset = xdr->buf->len; |
1da177e4 | 5388 | |
695e12f8 BH |
5389 | if (op->opnum == OP_ILLEGAL) |
5390 | goto status; | |
b7571e4c BF |
5391 | if (op->status && opdesc && |
5392 | !(opdesc->op_flags & OP_NONTRIVIAL_ERROR_ENCODE)) | |
5393 | goto status; | |
695e12f8 BH |
5394 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || |
5395 | !nfsd4_enc_ops[op->opnum]); | |
07d1f802 BF |
5396 | encoder = nfsd4_enc_ops[op->opnum]; |
5397 | op->status = encoder(resp, op->status, &op->u); | |
08281341 CL |
5398 | if (op->status) |
5399 | trace_nfsd_compound_encode_err(rqstp, op->opnum, op->status); | |
34b1744c BF |
5400 | if (opdesc && opdesc->op_release) |
5401 | opdesc->op_release(&op->u); | |
2825a7f9 BF |
5402 | xdr_commit_encode(xdr); |
5403 | ||
067e1ace | 5404 | /* nfsd4_check_resp_size guarantees enough room for error status */ |
5f4ab945 BF |
5405 | if (!op->status) { |
5406 | int space_needed = 0; | |
5407 | if (!nfsd4_last_compound_op(rqstp)) | |
5408 | space_needed = COMPOUND_ERR_SLACK_SPACE; | |
5409 | op->status = nfsd4_check_resp_size(resp, space_needed); | |
5410 | } | |
c8f13d97 BF |
5411 | if (op->status == nfserr_resource && nfsd4_has_session(&resp->cstate)) { |
5412 | struct nfsd4_slot *slot = resp->cstate.slot; | |
5413 | ||
5414 | if (slot->sl_flags & NFSD4_SLOT_CACHETHIS) | |
5415 | op->status = nfserr_rep_too_big_to_cache; | |
5416 | else | |
5417 | op->status = nfserr_rep_too_big; | |
5418 | } | |
07d1f802 BF |
5419 | if (op->status == nfserr_resource || |
5420 | op->status == nfserr_rep_too_big || | |
5421 | op->status == nfserr_rep_too_big_to_cache) { | |
5422 | /* | |
5423 | * The operation may have already been encoded or | |
5424 | * partially encoded. No op returns anything additional | |
5425 | * in the case of one of these three errors, so we can | |
5426 | * just truncate back to after the status. But it's a | |
5427 | * bug if we had to do this on a non-idempotent op: | |
5428 | */ | |
5429 | warn_on_nonidempotent_op(op); | |
082d4bd7 | 5430 | xdr_truncate_encode(xdr, post_err_offset); |
07d1f802 | 5431 | } |
9411b1d4 | 5432 | if (so) { |
082d4bd7 BF |
5433 | int len = xdr->buf->len - post_err_offset; |
5434 | ||
9411b1d4 | 5435 | so->so_replay.rp_status = op->status; |
082d4bd7 BF |
5436 | so->so_replay.rp_buflen = len; |
5437 | read_bytes_from_xdr_buf(xdr->buf, post_err_offset, | |
5438 | so->so_replay.rp_buf, len); | |
9411b1d4 | 5439 | } |
695e12f8 | 5440 | status: |
082d4bd7 BF |
5441 | /* Note that op->status is already in network byte order: */ |
5442 | write_bytes_to_xdr_buf(xdr->buf, post_err_offset - 4, &op->status, 4); | |
1da177e4 LT |
5443 | } |
5444 | ||
5445 | /* | |
5446 | * Encode the reply stored in the stateowner reply cache | |
5447 | * | |
5448 | * XDR note: do not encode rp->rp_buflen: the buffer contains the | |
5449 | * previously sent already encoded operation. | |
1da177e4 LT |
5450 | */ |
5451 | void | |
d0a381dd | 5452 | nfsd4_encode_replay(struct xdr_stream *xdr, struct nfsd4_op *op) |
1da177e4 | 5453 | { |
bc749ca4 | 5454 | __be32 *p; |
1da177e4 LT |
5455 | struct nfs4_replay *rp = op->replay; |
5456 | ||
d0a381dd BF |
5457 | p = xdr_reserve_space(xdr, 8 + rp->rp_buflen); |
5458 | if (!p) { | |
5459 | WARN_ON_ONCE(1); | |
5460 | return; | |
5461 | } | |
c373b0a4 | 5462 | *p++ = cpu_to_be32(op->opnum); |
1da177e4 | 5463 | *p++ = rp->rp_status; /* already xdr'ed */ |
1da177e4 | 5464 | |
0c0c267b | 5465 | p = xdr_encode_opaque_fixed(p, rp->rp_buf, rp->rp_buflen); |
1da177e4 LT |
5466 | } |
5467 | ||
8537488b | 5468 | void nfsd4_release_compoundargs(struct svc_rqst *rqstp) |
1da177e4 | 5469 | { |
3e98abff BF |
5470 | struct nfsd4_compoundargs *args = rqstp->rq_argp; |
5471 | ||
1da177e4 LT |
5472 | if (args->ops != args->iops) { |
5473 | kfree(args->ops); | |
5474 | args->ops = args->iops; | |
5475 | } | |
1da177e4 | 5476 | while (args->to_free) { |
d5e23383 | 5477 | struct svcxdr_tmpbuf *tb = args->to_free; |
1da177e4 | 5478 | args->to_free = tb->next; |
1da177e4 LT |
5479 | kfree(tb); |
5480 | } | |
5481 | } | |
5482 | ||
5483 | int | |
026fec7e | 5484 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 5485 | { |
026fec7e CH |
5486 | struct nfsd4_compoundargs *args = rqstp->rq_argp; |
5487 | ||
c1346a12 | 5488 | /* svcxdr_tmp_alloc */ |
1da177e4 LT |
5489 | args->tmpp = NULL; |
5490 | args->to_free = NULL; | |
c1346a12 CL |
5491 | |
5492 | args->xdr = &rqstp->rq_arg_stream; | |
1da177e4 LT |
5493 | args->ops = args->iops; |
5494 | args->rqstp = rqstp; | |
5495 | ||
3e98abff | 5496 | return !nfsd4_decode_compound(args); |
1da177e4 LT |
5497 | } |
5498 | ||
5499 | int | |
63f8de37 | 5500 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 5501 | { |
63f8de37 | 5502 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
6ac90391 BF |
5503 | struct xdr_buf *buf = resp->xdr.buf; |
5504 | ||
5505 | WARN_ON_ONCE(buf->len != buf->head[0].iov_len + buf->page_len + | |
5506 | buf->tail[0].iov_len); | |
dd97fdde | 5507 | |
cc028a10 CL |
5508 | *p = resp->cstate.status; |
5509 | ||
2825a7f9 BF |
5510 | rqstp->rq_next_page = resp->xdr.page_ptr + 1; |
5511 | ||
1da177e4 LT |
5512 | p = resp->tagp; |
5513 | *p++ = htonl(resp->taglen); | |
5514 | memcpy(p, resp->tag, resp->taglen); | |
5515 | p += XDR_QUADLEN(resp->taglen); | |
5516 | *p++ = htonl(resp->opcnt); | |
5517 | ||
b607664e | 5518 | nfsd4_sequence_done(resp); |
1da177e4 LT |
5519 | return 1; |
5520 | } | |
5521 | ||
5522 | /* | |
5523 | * Local variables: | |
5524 | * c-basic-offset: 8 | |
5525 | * End: | |
5526 | */ |