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NFSv4: Fix a potential CLOSE race
[linux-2.6-block.git] / fs / nfs / nfs4xdr.c
CommitLineData
1da177e4
LT		 1/*
2 * fs/nfs/nfs4xdr.c
3 *
4 * Client-side XDR for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38#include <linux/param.h>
39#include <linux/time.h>
40#include <linux/mm.h>
41#include <linux/slab.h>
42#include <linux/utsname.h>
43#include <linux/errno.h>
44#include <linux/string.h>
45#include <linux/in.h>
46#include <linux/pagemap.h>
47#include <linux/proc_fs.h>
48#include <linux/kdev_t.h>
49#include <linux/sunrpc/clnt.h>
50#include <linux/nfs.h>
51#include <linux/nfs4.h>
52#include <linux/nfs_fs.h>
53#include <linux/nfs_idmap.h>
4ce79717 54#include "nfs4_fs.h"
1da177e4
LT		 55
56#define NFSDBG_FACILITY NFSDBG_XDR
57
58/* Mapping from NFS error code to "errno" error code. */
59#define errno_NFSERR_IO EIO
60
61static int nfs_stat_to_errno(int);
62
63/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
64#ifdef DEBUG
65#define NFS4_MAXTAGLEN 20
66#else
67#define NFS4_MAXTAGLEN 0
68#endif
69
70/* lock,open owner id:
71 * we currently use size 1 (u32) out of (NFS4_OPAQUE_LIMIT >> 2)
72 */
73#define owner_id_maxsz (1 + 1)
74#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
75#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
76#define op_encode_hdr_maxsz (1)
77#define op_decode_hdr_maxsz (2)
78#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
79 (NFS4_FHSIZE >> 2))
80#define decode_putfh_maxsz (op_decode_hdr_maxsz)
81#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
82#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
83#define encode_getfh_maxsz (op_encode_hdr_maxsz)
84#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
85 ((3+NFS4_FHSIZE) >> 2))
96928206
BF		 86#define nfs4_fattr_bitmap_maxsz 3
87#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
1da177e4
LT		 88#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
89#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
96928206
BF		 90/* This is based on getfattr, which uses the most attributes: */
91#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
92 3 + 3 + 3 + 2 * nfs4_name_maxsz))
93#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
94 nfs4_fattr_value_maxsz)
95#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
1da177e4
LT		 96#define encode_savefh_maxsz (op_encode_hdr_maxsz)
97#define decode_savefh_maxsz (op_decode_hdr_maxsz)
98#define encode_fsinfo_maxsz (op_encode_hdr_maxsz + 2)
99#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11)
100#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
101#define decode_renew_maxsz (op_decode_hdr_maxsz)
102#define encode_setclientid_maxsz \
103 (op_encode_hdr_maxsz + \
104 4 /*server->ip_addr*/ + \
105 1 /*Netid*/ + \
106 6 /*uaddr*/ + \
107 6 + (NFS4_VERIFIER_SIZE >> 2))
108#define decode_setclientid_maxsz \
109 (op_decode_hdr_maxsz + \
110 2 + \
111 1024) /* large value for CLID_INUSE */
112#define encode_setclientid_confirm_maxsz \
113 (op_encode_hdr_maxsz + \
114 3 + (NFS4_VERIFIER_SIZE >> 2))
115#define decode_setclientid_confirm_maxsz \
116 (op_decode_hdr_maxsz)
117#define encode_lookup_maxsz (op_encode_hdr_maxsz + \
118 1 + ((3 + NFS4_FHSIZE) >> 2))
119#define encode_remove_maxsz (op_encode_hdr_maxsz + \
120 nfs4_name_maxsz)
121#define encode_rename_maxsz (op_encode_hdr_maxsz + \
122 2 * nfs4_name_maxsz)
123#define decode_rename_maxsz (op_decode_hdr_maxsz + 5 + 5)
124#define encode_link_maxsz (op_encode_hdr_maxsz + \
125 nfs4_name_maxsz)
126#define decode_link_maxsz (op_decode_hdr_maxsz + 5)
127#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
128 1 + nfs4_name_maxsz + \
129 nfs4_path_maxsz + \
96928206 130 nfs4_fattr_maxsz)
1da177e4
LT		 131#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
132#define encode_create_maxsz (op_encode_hdr_maxsz + \
133 2 + nfs4_name_maxsz + \
96928206 134 nfs4_fattr_maxsz)
1da177e4
LT		 135#define decode_create_maxsz (op_decode_hdr_maxsz + 8)
136#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
137#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
138#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
139#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
140#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
141 encode_putfh_maxsz + \
142 op_encode_hdr_maxsz + 7)
143#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
144 decode_putfh_maxsz + \
145 op_decode_hdr_maxsz + 2)
146#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
147 encode_putfh_maxsz + \
148 op_encode_hdr_maxsz)
149#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
150 decode_putfh_maxsz + \
151 op_decode_hdr_maxsz)
152#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
153 encode_putfh_maxsz + \
154 op_encode_hdr_maxsz + 9)
155#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
156 decode_putfh_maxsz + \
157 op_decode_hdr_maxsz + 2)
158#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
159 encode_putfh_maxsz + \
160 op_encode_hdr_maxsz + 8)
161#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
162 decode_putfh_maxsz + \
163 op_decode_hdr_maxsz + 4)
164#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
165 encode_putfh_maxsz + \
166 op_encode_hdr_maxsz + 3)
167#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
168 decode_putfh_maxsz + \
169 op_decode_hdr_maxsz + 2)
170#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
171 encode_putfh_maxsz + \
172 op_encode_hdr_maxsz + \
173 13 + 3 + 2 + 64 + \
174 encode_getattr_maxsz + \
175 encode_getfh_maxsz)
176#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
177 decode_putfh_maxsz + \
178 op_decode_hdr_maxsz + 4 + 5 + 2 + 3 + \
179 decode_getattr_maxsz + \
180 decode_getfh_maxsz)
181#define NFS4_enc_open_confirm_sz \
182 (compound_encode_hdr_maxsz + \
183 encode_putfh_maxsz + \
184 op_encode_hdr_maxsz + 5)
185#define NFS4_dec_open_confirm_sz (compound_decode_hdr_maxsz + \
186 decode_putfh_maxsz + \
187 op_decode_hdr_maxsz + 4)
188#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
189 encode_putfh_maxsz + \
190 op_encode_hdr_maxsz + \
191 11)
192#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
193 decode_putfh_maxsz + \
194 op_decode_hdr_maxsz + \
195 4 + 5 + 2 + 3)
196#define NFS4_enc_open_downgrade_sz \
197 (compound_encode_hdr_maxsz + \
198 encode_putfh_maxsz + \
199 op_encode_hdr_maxsz + 7)
200#define NFS4_dec_open_downgrade_sz \
201 (compound_decode_hdr_maxsz + \
202 decode_putfh_maxsz + \
203 op_decode_hdr_maxsz + 4)
204#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
205 encode_putfh_maxsz + \
206 op_encode_hdr_maxsz + 5)
207#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
208 decode_putfh_maxsz + \
209 op_decode_hdr_maxsz + 4)
210#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
211 encode_putfh_maxsz + \
212 op_encode_hdr_maxsz + 4 + \
96928206 213 nfs4_fattr_maxsz + \
1da177e4
LT		 214 encode_getattr_maxsz)
215#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
216 decode_putfh_maxsz + \
217 op_decode_hdr_maxsz + 3)
218#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
219 encode_putfh_maxsz + \
220 encode_fsinfo_maxsz)
221#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
222 decode_putfh_maxsz + \
223 decode_fsinfo_maxsz)
224#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
225 encode_renew_maxsz)
226#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
227 decode_renew_maxsz)
228#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
229 encode_setclientid_maxsz)
230#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
231 decode_setclientid_maxsz)
232#define NFS4_enc_setclientid_confirm_sz \
233 (compound_encode_hdr_maxsz + \
234 encode_setclientid_confirm_maxsz + \
235 encode_putrootfh_maxsz + \
236 encode_fsinfo_maxsz)
237#define NFS4_dec_setclientid_confirm_sz \
238 (compound_decode_hdr_maxsz + \
239 decode_setclientid_confirm_maxsz + \
240 decode_putrootfh_maxsz + \
241 decode_fsinfo_maxsz)
242#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
243 encode_putfh_maxsz + \
244 encode_getattr_maxsz + \
245 op_encode_hdr_maxsz + \
246 1 + 1 + 2 + 2 + \
247 1 + 4 + 1 + 2 + \
248 owner_id_maxsz)
249#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
250 decode_putfh_maxsz + \
251 decode_getattr_maxsz + \
252 op_decode_hdr_maxsz + \
253 2 + 2 + 1 + 2 + \
254 owner_id_maxsz)
255#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
256 encode_putfh_maxsz + \
257 encode_getattr_maxsz + \
258 op_encode_hdr_maxsz + \
259 1 + 2 + 2 + 2 + \
260 owner_id_maxsz)
261#define NFS4_dec_lockt_sz (NFS4_dec_lock_sz)
262#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
263 encode_putfh_maxsz + \
264 encode_getattr_maxsz + \
265 op_encode_hdr_maxsz + \
266 1 + 1 + 4 + 2 + 2)
267#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
268 decode_putfh_maxsz + \
269 decode_getattr_maxsz + \
270 op_decode_hdr_maxsz + 4)
271#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
272 encode_putfh_maxsz + \
273 op_encode_hdr_maxsz + 1)
274#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
275 decode_putfh_maxsz + \
276 op_decode_hdr_maxsz + 2)
277#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
278 encode_putfh_maxsz + \
279 encode_getattr_maxsz)
280#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
281 decode_putfh_maxsz + \
282 decode_getattr_maxsz)
283#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
284 encode_putfh_maxsz + \
285 encode_lookup_maxsz + \
286 encode_getattr_maxsz + \
287 encode_getfh_maxsz)
288#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
289 decode_putfh_maxsz + \
290 op_decode_hdr_maxsz + \
291 decode_getattr_maxsz + \
292 decode_getfh_maxsz)
293#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
294 encode_putrootfh_maxsz + \
295 encode_getattr_maxsz + \
296 encode_getfh_maxsz)
297#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
298 decode_putrootfh_maxsz + \
299 decode_getattr_maxsz + \
300 decode_getfh_maxsz)
301#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
302 encode_putfh_maxsz + \
303 encode_remove_maxsz)
304#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
305 decode_putfh_maxsz + \
306 op_decode_hdr_maxsz + 5)
307#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
308 encode_putfh_maxsz + \
309 encode_savefh_maxsz + \
310 encode_putfh_maxsz + \
311 encode_rename_maxsz)
312#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
313 decode_putfh_maxsz + \
314 decode_savefh_maxsz + \
315 decode_putfh_maxsz + \
316 decode_rename_maxsz)
317#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
318 encode_putfh_maxsz + \
319 encode_savefh_maxsz + \
320 encode_putfh_maxsz + \
321 encode_link_maxsz)
322#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
323 decode_putfh_maxsz + \
324 decode_savefh_maxsz + \
325 decode_putfh_maxsz + \
326 decode_link_maxsz)
327#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
328 encode_putfh_maxsz + \
329 encode_symlink_maxsz + \
330 encode_getattr_maxsz + \
331 encode_getfh_maxsz)
332#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
333 decode_putfh_maxsz + \
334 decode_symlink_maxsz + \
335 decode_getattr_maxsz + \
336 decode_getfh_maxsz)
337#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
338 encode_putfh_maxsz + \
339 encode_create_maxsz + \
340 encode_getattr_maxsz + \
341 encode_getfh_maxsz)
342#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
343 decode_putfh_maxsz + \
344 decode_create_maxsz + \
345 decode_getattr_maxsz + \
346 decode_getfh_maxsz)
347#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
348 encode_putfh_maxsz + \
349 encode_getattr_maxsz)
350#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
351 decode_putfh_maxsz + \
352 decode_getattr_maxsz)
353#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
354 encode_putfh_maxsz + \
355 encode_getattr_maxsz)
356#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
357 decode_putfh_maxsz + \
358 op_decode_hdr_maxsz + 12)
359#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
360 encode_getattr_maxsz)
361#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
362 decode_getattr_maxsz)
363#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
364 encode_putfh_maxsz + \
365 encode_delegreturn_maxsz)
366#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
367 decode_delegreturn_maxsz)
029d105e
BF		 368#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
369 encode_putfh_maxsz + \
370 encode_getattr_maxsz)
371#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
372 decode_putfh_maxsz + \
373 op_decode_hdr_maxsz + \
374 nfs4_fattr_bitmap_maxsz + 1)
23ec6965
BF		 375#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
376 encode_putfh_maxsz + \
377 op_encode_hdr_maxsz + 4 + \
378 nfs4_fattr_bitmap_maxsz + 1)
379#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
380 decode_putfh_maxsz + \
381 op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
1da177e4
LT		 382
383static struct {
384 unsigned int mode;
385 unsigned int nfs2type;
386} nfs_type2fmt[] = {
387 { 0, NFNON },
388 { S_IFREG, NFREG },
389 { S_IFDIR, NFDIR },
390 { S_IFBLK, NFBLK },
391 { S_IFCHR, NFCHR },
392 { S_IFLNK, NFLNK },
393 { S_IFSOCK, NFSOCK },
394 { S_IFIFO, NFFIFO },
395 { 0, NFNON },
396 { 0, NFNON },
397};
398
399struct compound_hdr {
400 int32_t status;
401 uint32_t nops;
402 uint32_t taglen;
403 char * tag;
404};
405
406/*
407 * START OF "GENERIC" ENCODE ROUTINES.
408 * These may look a little ugly since they are imported from a "generic"
409 * set of XDR encode/decode routines which are intended to be shared by
410 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
411 *
412 * If the pain of reading these is too great, it should be a straightforward
413 * task to translate them into Linux-specific versions which are more
414 * consistent with the style used in NFSv2/v3...
415 */
416#define WRITE32(n) *p++ = htonl(n)
417#define WRITE64(n) do { \
418 *p++ = htonl((uint32_t)((n) >> 32)); \
419 *p++ = htonl((uint32_t)(n)); \
420} while (0)
421#define WRITEMEM(ptr,nbytes) do { \
422 p = xdr_encode_opaque_fixed(p, ptr, nbytes); \
423} while (0)
424
425#define RESERVE_SPACE(nbytes) do { \
426 p = xdr_reserve_space(xdr, nbytes); \
427 if (!p) printk("RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __FUNCTION__); \
428 BUG_ON(!p); \
429} while (0)
430
431static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
432{
433 uint32_t *p;
434
435 p = xdr_reserve_space(xdr, 4 + len);
436 BUG_ON(p == NULL);
437 xdr_encode_opaque(p, str, len);
438}
439
440static int encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
441{
442 uint32_t *p;
443
444 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
445 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
446 RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
447 WRITE32(hdr->taglen);
448 WRITEMEM(hdr->tag, hdr->taglen);
449 WRITE32(NFS4_MINOR_VERSION);
450 WRITE32(hdr->nops);
451 return 0;
452}
453
454static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
455{
456 uint32_t *p;
457
458 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
459 BUG_ON(p == NULL);
460 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
461}
462
463static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
464{
465 char owner_name[IDMAP_NAMESZ];
466 char owner_group[IDMAP_NAMESZ];
467 int owner_namelen = 0;
468 int owner_grouplen = 0;
469 uint32_t *p;
470 uint32_t *q;
471 int len;
472 uint32_t bmval0 = 0;
473 uint32_t bmval1 = 0;
474 int status;
475
476 /*
477 * We reserve enough space to write the entire attribute buffer at once.
478 * In the worst-case, this would be
479 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
480 * = 36 bytes, plus any contribution from variable-length fields
23ec6965 481 * such as owner/group.
1da177e4
LT		 482 */
483 len = 16;
484
485 /* Sigh */
486 if (iap->ia_valid & ATTR_SIZE)
487 len += 8;
488 if (iap->ia_valid & ATTR_MODE)
489 len += 4;
490 if (iap->ia_valid & ATTR_UID) {
491 owner_namelen = nfs_map_uid_to_name(server->nfs4_state, iap->ia_uid, owner_name);
492 if (owner_namelen < 0) {
493 printk(KERN_WARNING "nfs: couldn't resolve uid %d to string\n",
494 iap->ia_uid);
495 /* XXX */
496 strcpy(owner_name, "nobody");
497 owner_namelen = sizeof("nobody") - 1;
498 /* goto out; */
499 }
500 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
501 }
502 if (iap->ia_valid & ATTR_GID) {
503 owner_grouplen = nfs_map_gid_to_group(server->nfs4_state, iap->ia_gid, owner_group);
504 if (owner_grouplen < 0) {
505 printk(KERN_WARNING "nfs4: couldn't resolve gid %d to string\n",
506 iap->ia_gid);
507 strcpy(owner_group, "nobody");
508 owner_grouplen = sizeof("nobody") - 1;
509 /* goto out; */
510 }
511 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
512 }
513 if (iap->ia_valid & ATTR_ATIME_SET)
514 len += 16;
515 else if (iap->ia_valid & ATTR_ATIME)
516 len += 4;
517 if (iap->ia_valid & ATTR_MTIME_SET)
518 len += 16;
519 else if (iap->ia_valid & ATTR_MTIME)
520 len += 4;
521 RESERVE_SPACE(len);
522
523 /*
524 * We write the bitmap length now, but leave the bitmap and the attribute
525 * buffer length to be backfilled at the end of this routine.
526 */
527 WRITE32(2);
528 q = p;
529 p += 3;
530
531 if (iap->ia_valid & ATTR_SIZE) {
532 bmval0 |= FATTR4_WORD0_SIZE;
533 WRITE64(iap->ia_size);
534 }
535 if (iap->ia_valid & ATTR_MODE) {
536 bmval1 |= FATTR4_WORD1_MODE;
537 WRITE32(iap->ia_mode);
538 }
539 if (iap->ia_valid & ATTR_UID) {
540 bmval1 |= FATTR4_WORD1_OWNER;
541 WRITE32(owner_namelen);
542 WRITEMEM(owner_name, owner_namelen);
543 }
544 if (iap->ia_valid & ATTR_GID) {
545 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
546 WRITE32(owner_grouplen);
547 WRITEMEM(owner_group, owner_grouplen);
548 }
549 if (iap->ia_valid & ATTR_ATIME_SET) {
550 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
551 WRITE32(NFS4_SET_TO_CLIENT_TIME);
552 WRITE32(0);
553 WRITE32(iap->ia_mtime.tv_sec);
554 WRITE32(iap->ia_mtime.tv_nsec);
555 }
556 else if (iap->ia_valid & ATTR_ATIME) {
557 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
558 WRITE32(NFS4_SET_TO_SERVER_TIME);
559 }
560 if (iap->ia_valid & ATTR_MTIME_SET) {
561 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
562 WRITE32(NFS4_SET_TO_CLIENT_TIME);
563 WRITE32(0);
564 WRITE32(iap->ia_mtime.tv_sec);
565 WRITE32(iap->ia_mtime.tv_nsec);
566 }
567 else if (iap->ia_valid & ATTR_MTIME) {
568 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
569 WRITE32(NFS4_SET_TO_SERVER_TIME);
570 }
571
572 /*
573 * Now we backfill the bitmap and the attribute buffer length.
574 */
575 if (len != ((char *)p - (char *)q) + 4) {
576 printk ("encode_attr: Attr length calculation error! %u != %Zu\n",
577 len, ((char *)p - (char *)q) + 4);
578 BUG();
579 }
580 len = (char *)p - (char *)q - 12;
581 *q++ = htonl(bmval0);
582 *q++ = htonl(bmval1);
583 *q++ = htonl(len);
584
585 status = 0;
586/* out: */
587 return status;
588}
589
590static int encode_access(struct xdr_stream *xdr, u32 access)
591{
592 uint32_t *p;
593
594 RESERVE_SPACE(8);
595 WRITE32(OP_ACCESS);
596 WRITE32(access);
597
598 return 0;
599}
600
601static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
602{
603 uint32_t *p;
604
9512135d 605 RESERVE_SPACE(8+sizeof(arg->stateid->data));
1da177e4 606 WRITE32(OP_CLOSE);
cee54fc9 607 WRITE32(arg->seqid->sequence->counter);
9512135d 608 WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
1da177e4
LT		 609
610 return 0;
611}
612
613static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args)
614{
615 uint32_t *p;
616
617 RESERVE_SPACE(16);
618 WRITE32(OP_COMMIT);
619 WRITE64(args->offset);
620 WRITE32(args->count);
621
622 return 0;
623}
624
625static int encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create)
626{
627 uint32_t *p;
628
629 RESERVE_SPACE(8);
630 WRITE32(OP_CREATE);
631 WRITE32(create->ftype);
632
633 switch (create->ftype) {
634 case NF4LNK:
635 RESERVE_SPACE(4 + create->u.symlink->len);
636 WRITE32(create->u.symlink->len);
637 WRITEMEM(create->u.symlink->name, create->u.symlink->len);
638 break;
639
640 case NF4BLK: case NF4CHR:
641 RESERVE_SPACE(8);
642 WRITE32(create->u.device.specdata1);
643 WRITE32(create->u.device.specdata2);
644 break;
645
646 default:
647 break;
648 }
649
650 RESERVE_SPACE(4 + create->name->len);
651 WRITE32(create->name->len);
652 WRITEMEM(create->name->name, create->name->len);
653
654 return encode_attrs(xdr, create->attrs, create->server);
655}
656
657static int encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap)
658{
659 uint32_t *p;
660
661 RESERVE_SPACE(12);
662 WRITE32(OP_GETATTR);
663 WRITE32(1);
664 WRITE32(bitmap);
665 return 0;
666}
667
668static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1)
669{
670 uint32_t *p;
671
672 RESERVE_SPACE(16);
673 WRITE32(OP_GETATTR);
674 WRITE32(2);
675 WRITE32(bm0);
676 WRITE32(bm1);
677 return 0;
678}
679
680static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
681{
1da177e4
LT		 682 return encode_getattr_two(xdr,
683 bitmask[0] & nfs4_fattr_bitmap[0],
684 bitmask[1] & nfs4_fattr_bitmap[1]);
685}
686
687static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask)
688{
1da177e4
LT		 689 return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
690 bitmask[1] & nfs4_fsinfo_bitmap[1]);
691}
692
693static int encode_getfh(struct xdr_stream *xdr)
694{
695 uint32_t *p;
696
697 RESERVE_SPACE(4);
698 WRITE32(OP_GETFH);
699
700 return 0;
701}
702
703static int encode_link(struct xdr_stream *xdr, const struct qstr *name)
704{
705 uint32_t *p;
706
707 RESERVE_SPACE(8 + name->len);
708 WRITE32(OP_LINK);
709 WRITE32(name->len);
710 WRITEMEM(name->name, name->len);
711
712 return 0;
713}
714
715/*
716 * opcode,type,reclaim,offset,length,new_lock_owner = 32
717 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
718 */
719static int encode_lock(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
720{
721 uint32_t *p;
722 struct nfs_lock_opargs *opargs = arg->u.lock;
723
724 RESERVE_SPACE(32);
725 WRITE32(OP_LOCK);
726 WRITE32(arg->type);
727 WRITE32(opargs->reclaim);
728 WRITE64(arg->offset);
729 WRITE64(arg->length);
730 WRITE32(opargs->new_lock_owner);
731 if (opargs->new_lock_owner){
732 struct nfs_open_to_lock *ol = opargs->u.open_lock;
733
734 RESERVE_SPACE(40);
cee54fc9 735 WRITE32(ol->open_seqid->sequence->counter);
1da177e4 736 WRITEMEM(&ol->open_stateid, sizeof(ol->open_stateid));
cee54fc9 737 WRITE32(ol->lock_seqid->sequence->counter);
1da177e4
LT		 738 WRITE64(ol->lock_owner.clientid);
739 WRITE32(4);
740 WRITE32(ol->lock_owner.id);
741 }
742 else {
743 struct nfs_exist_lock *el = opargs->u.exist_lock;
744
745 RESERVE_SPACE(20);
746 WRITEMEM(&el->stateid, sizeof(el->stateid));
cee54fc9 747 WRITE32(el->seqid->sequence->counter);
1da177e4
LT		 748 }
749
750 return 0;
751}
752
753static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
754{
755 uint32_t *p;
756 struct nfs_lowner *opargs = arg->u.lockt;
757
758 RESERVE_SPACE(40);
759 WRITE32(OP_LOCKT);
760 WRITE32(arg->type);
761 WRITE64(arg->offset);
762 WRITE64(arg->length);
763 WRITE64(opargs->clientid);
764 WRITE32(4);
765 WRITE32(opargs->id);
766
767 return 0;
768}
769
770static int encode_locku(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
771{
772 uint32_t *p;
773 struct nfs_locku_opargs *opargs = arg->u.locku;
774
775 RESERVE_SPACE(44);
776 WRITE32(OP_LOCKU);
777 WRITE32(arg->type);
cee54fc9 778 WRITE32(opargs->seqid->sequence->counter);
1da177e4
LT		 779 WRITEMEM(&opargs->stateid, sizeof(opargs->stateid));
780 WRITE64(arg->offset);
781 WRITE64(arg->length);
782
783 return 0;
784}
785
786static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name)
787{
788 int len = name->len;
789 uint32_t *p;
790
791 RESERVE_SPACE(8 + len);
792 WRITE32(OP_LOOKUP);
793 WRITE32(len);
794 WRITEMEM(name->name, len);
795
796 return 0;
797}
798
799static void encode_share_access(struct xdr_stream *xdr, int open_flags)
800{
801 uint32_t *p;
802
803 RESERVE_SPACE(8);
804 switch (open_flags & (FMODE_READ|FMODE_WRITE)) {
805 case FMODE_READ:
806 WRITE32(NFS4_SHARE_ACCESS_READ);
807 break;
808 case FMODE_WRITE:
809 WRITE32(NFS4_SHARE_ACCESS_WRITE);
810 break;
811 case FMODE_READ|FMODE_WRITE:
812 WRITE32(NFS4_SHARE_ACCESS_BOTH);
813 break;
814 default:
815 BUG();
816 }
817 WRITE32(0); /* for linux, share_deny = 0 always */
818}
819
820static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
821{
822 uint32_t *p;
823 /*
824 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
825 * owner 4 = 32
826 */
827 RESERVE_SPACE(8);
828 WRITE32(OP_OPEN);
cee54fc9 829 WRITE32(arg->seqid->sequence->counter);
1da177e4
LT		 830 encode_share_access(xdr, arg->open_flags);
831 RESERVE_SPACE(16);
832 WRITE64(arg->clientid);
833 WRITE32(4);
834 WRITE32(arg->id);
835}
836
837static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
838{
839 uint32_t *p;
840
841 RESERVE_SPACE(4);
842 switch(arg->open_flags & O_EXCL) {
843 case 0:
844 WRITE32(NFS4_CREATE_UNCHECKED);
845 encode_attrs(xdr, arg->u.attrs, arg->server);
846 break;
847 default:
848 WRITE32(NFS4_CREATE_EXCLUSIVE);
849 encode_nfs4_verifier(xdr, &arg->u.verifier);
850 }
851}
852
853static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
854{
855 uint32_t *p;
856
857 RESERVE_SPACE(4);
858 switch (arg->open_flags & O_CREAT) {
859 case 0:
860 WRITE32(NFS4_OPEN_NOCREATE);
861 break;
862 default:
863 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
864 WRITE32(NFS4_OPEN_CREATE);
865 encode_createmode(xdr, arg);
866 }
867}
868
869static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type)
870{
871 uint32_t *p;
872
873 RESERVE_SPACE(4);
874 switch (delegation_type) {
875 case 0:
876 WRITE32(NFS4_OPEN_DELEGATE_NONE);
877 break;
878 case FMODE_READ:
879 WRITE32(NFS4_OPEN_DELEGATE_READ);
880 break;
881 case FMODE_WRITE|FMODE_READ:
882 WRITE32(NFS4_OPEN_DELEGATE_WRITE);
883 break;
884 default:
885 BUG();
886 }
887}
888
889static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
890{
891 uint32_t *p;
892
893 RESERVE_SPACE(4);
894 WRITE32(NFS4_OPEN_CLAIM_NULL);
895 encode_string(xdr, name->len, name->name);
896}
897
898static inline void encode_claim_previous(struct xdr_stream *xdr, int type)
899{
900 uint32_t *p;
901
902 RESERVE_SPACE(4);
903 WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
904 encode_delegation_type(xdr, type);
905}
906
907static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
908{
909 uint32_t *p;
910
911 RESERVE_SPACE(4+sizeof(stateid->data));
912 WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
913 WRITEMEM(stateid->data, sizeof(stateid->data));
914 encode_string(xdr, name->len, name->name);
915}
916
917static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg)
918{
919 encode_openhdr(xdr, arg);
920 encode_opentype(xdr, arg);
921 switch (arg->claim) {
922 case NFS4_OPEN_CLAIM_NULL:
923 encode_claim_null(xdr, arg->name);
924 break;
925 case NFS4_OPEN_CLAIM_PREVIOUS:
926 encode_claim_previous(xdr, arg->u.delegation_type);
927 break;
928 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
929 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
930 break;
931 default:
932 BUG();
933 }
934 return 0;
935}
936
937static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg)
938{
939 uint32_t *p;
940
941 RESERVE_SPACE(8+sizeof(arg->stateid.data));
942 WRITE32(OP_OPEN_CONFIRM);
943 WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
cee54fc9 944 WRITE32(arg->seqid->sequence->counter);
1da177e4
LT		 945
946 return 0;
947}
948
949static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
950{
951 uint32_t *p;
952
9512135d 953 RESERVE_SPACE(8+sizeof(arg->stateid->data));
1da177e4 954 WRITE32(OP_OPEN_DOWNGRADE);
9512135d 955 WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
cee54fc9 956 WRITE32(arg->seqid->sequence->counter);
1da177e4
LT		 957 encode_share_access(xdr, arg->open_flags);
958 return 0;
959}
960
961static int
962encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh)
963{
964 int len = fh->size;
965 uint32_t *p;
966
967 RESERVE_SPACE(8 + len);
968 WRITE32(OP_PUTFH);
969 WRITE32(len);
970 WRITEMEM(fh->data, len);
971
972 return 0;
973}
974
975static int encode_putrootfh(struct xdr_stream *xdr)
976{
977 uint32_t *p;
978
979 RESERVE_SPACE(4);
980 WRITE32(OP_PUTROOTFH);
981
982 return 0;
983}
984
985static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
986{
1da177e4
LT		 987 nfs4_stateid stateid;
988 uint32_t *p;
989
990 RESERVE_SPACE(16);
991 if (ctx->state != NULL) {
992 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
993 WRITEMEM(stateid.data, sizeof(stateid.data));
994 } else
995 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
996}
997
998static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
999{
1000 uint32_t *p;
1001
1002 RESERVE_SPACE(4);
1003 WRITE32(OP_READ);
1004
1005 encode_stateid(xdr, args->context);
1006
1007 RESERVE_SPACE(12);
1008 WRITE64(args->offset);
1009 WRITE32(args->count);
1010
1011 return 0;
1012}
1013
1014static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req)
1015{
1016 struct rpc_auth *auth = req->rq_task->tk_auth;
97d312d0
MN		 1017 uint32_t attrs[2] = {
1018 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1019 FATTR4_WORD1_MOUNTED_ON_FILEID,
1020 };
1da177e4
LT		 1021 int replen;
1022 uint32_t *p;
1023
1024 RESERVE_SPACE(32+sizeof(nfs4_verifier));
1025 WRITE32(OP_READDIR);
1026 WRITE64(readdir->cookie);
1027 WRITEMEM(readdir->verifier.data, sizeof(readdir->verifier.data));
1028 WRITE32(readdir->count >> 1); /* We're not doing readdirplus */
1029 WRITE32(readdir->count);
1030 WRITE32(2);
97d312d0
MN		 1031 /* Switch to mounted_on_fileid if the server supports it */
1032 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1033 attrs[0] &= ~FATTR4_WORD0_FILEID;
1034 else
1035 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1036 WRITE32(attrs[0] & readdir->bitmask[0]);
1037 WRITE32(attrs[1] & readdir->bitmask[1]);
eadf4598
TM		 1038 dprintk("%s: cookie = %Lu, verifier = 0x%x%x, bitmap = 0x%x%x\n",
1039 __FUNCTION__,
1040 (unsigned long long)readdir->cookie,
1041 ((u32 *)readdir->verifier.data)[0],
1042 ((u32 *)readdir->verifier.data)[1],
1043 attrs[0] & readdir->bitmask[0],
1044 attrs[1] & readdir->bitmask[1]);
1da177e4
LT		 1045
1046 /* set up reply kvec
1047 * toplevel_status + taglen + rescount + OP_PUTFH + status
1048 * + OP_READDIR + status + verifer(2) = 9
1049 */
1050 replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2;
1051 xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages,
1052 readdir->pgbase, readdir->count);
eadf4598
TM		 1053 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
1054 __FUNCTION__, replen, readdir->pages,
1055 readdir->pgbase, readdir->count);
1da177e4
LT		 1056
1057 return 0;
1058}
1059
1060static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req)
1061{
1062 struct rpc_auth *auth = req->rq_task->tk_auth;
1063 unsigned int replen;
1064 uint32_t *p;
1065
1066 RESERVE_SPACE(4);
1067 WRITE32(OP_READLINK);
1068
1069 /* set up reply kvec
1070 * toplevel_status + taglen + rescount + OP_PUTFH + status
1071 * + OP_READLINK + status + string length = 8
1072 */
1073 replen = (RPC_REPHDRSIZE + auth->au_rslack + 8) << 2;
1074 xdr_inline_pages(&req->rq_rcv_buf, replen, readlink->pages,
1075 readlink->pgbase, readlink->pglen);
1076
1077 return 0;
1078}
1079
1080static int encode_remove(struct xdr_stream *xdr, const struct qstr *name)
1081{
1082 uint32_t *p;
1083
1084 RESERVE_SPACE(8 + name->len);
1085 WRITE32(OP_REMOVE);
1086 WRITE32(name->len);
1087 WRITEMEM(name->name, name->len);
1088
1089 return 0;
1090}
1091
1092static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname)
1093{
1094 uint32_t *p;
1095
1096 RESERVE_SPACE(8 + oldname->len);
1097 WRITE32(OP_RENAME);
1098 WRITE32(oldname->len);
1099 WRITEMEM(oldname->name, oldname->len);
1100
1101 RESERVE_SPACE(4 + newname->len);
1102 WRITE32(newname->len);
1103 WRITEMEM(newname->name, newname->len);
1104
1105 return 0;
1106}
1107
1108static int encode_renew(struct xdr_stream *xdr, const struct nfs4_client *client_stateid)
1109{
1110 uint32_t *p;
1111
1112 RESERVE_SPACE(12);
1113 WRITE32(OP_RENEW);
1114 WRITE64(client_stateid->cl_clientid);
1115
1116 return 0;
1117}
1118
23ec6965
BF		 1119static int
1120encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg)
1121{
1122 uint32_t *p;
1123
1124 RESERVE_SPACE(4+sizeof(zero_stateid.data));
1125 WRITE32(OP_SETATTR);
1126 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
1127 RESERVE_SPACE(2*4);
1128 WRITE32(1);
1129 WRITE32(FATTR4_WORD0_ACL);
1130 if (arg->acl_len % 4)
1131 return -EINVAL;
1132 RESERVE_SPACE(4);
1133 WRITE32(arg->acl_len);
1134 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1135 return 0;
1136}
1137
1da177e4
LT		 1138static int
1139encode_savefh(struct xdr_stream *xdr)
1140{
1141 uint32_t *p;
1142
1143 RESERVE_SPACE(4);
1144 WRITE32(OP_SAVEFH);
1145
1146 return 0;
1147}
1148
1149static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server)
1150{
1151 int status;
1152 uint32_t *p;
1153
1154 RESERVE_SPACE(4+sizeof(arg->stateid.data));
1155 WRITE32(OP_SETATTR);
1156 WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
1157
1158 if ((status = encode_attrs(xdr, arg->iap, server)))
1159 return status;
1160
1161 return 0;
1162}
1163
1164static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid)
1165{
1166 uint32_t *p;
1167
1168 RESERVE_SPACE(4 + sizeof(setclientid->sc_verifier->data));
1169 WRITE32(OP_SETCLIENTID);
1170 WRITEMEM(setclientid->sc_verifier->data, sizeof(setclientid->sc_verifier->data));
1171
1172 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1173 RESERVE_SPACE(4);
1174 WRITE32(setclientid->sc_prog);
1175 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1176 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1177 RESERVE_SPACE(4);
1178 WRITE32(setclientid->sc_cb_ident);
1179
1180 return 0;
1181}
1182
1183static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_client *client_state)
1184{
1185 uint32_t *p;
1186
1187 RESERVE_SPACE(12 + sizeof(client_state->cl_confirm.data));
1188 WRITE32(OP_SETCLIENTID_CONFIRM);
1189 WRITE64(client_state->cl_clientid);
1190 WRITEMEM(client_state->cl_confirm.data, sizeof(client_state->cl_confirm.data));
1191
1192 return 0;
1193}
1194
1195static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args)
1196{
1197 uint32_t *p;
1198
1199 RESERVE_SPACE(4);
1200 WRITE32(OP_WRITE);
1201
1202 encode_stateid(xdr, args->context);
1203
1204 RESERVE_SPACE(16);
1205 WRITE64(args->offset);
1206 WRITE32(args->stable);
1207 WRITE32(args->count);
1208
1209 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1210
1211 return 0;
1212}
1213
1214static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1215{
1216 uint32_t *p;
1217
1218 RESERVE_SPACE(20);
1219
1220 WRITE32(OP_DELEGRETURN);
1221 WRITEMEM(stateid->data, sizeof(stateid->data));
1222 return 0;
1223
1224}
1225/*
1226 * END OF "GENERIC" ENCODE ROUTINES.
1227 */
1228
1229/*
1230 * Encode an ACCESS request
1231 */
1232static int nfs4_xdr_enc_access(struct rpc_rqst *req, uint32_t *p, const struct nfs4_accessargs *args)
1233{
1234 struct xdr_stream xdr;
1235 struct compound_hdr hdr = {
1236 .nops = 2,
1237 };
1238 int status;
1239
1240 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1241 encode_compound_hdr(&xdr, &hdr);
1242 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1243 status = encode_access(&xdr, args->access);
1244 return status;
1245}
1246
1247/*
1248 * Encode LOOKUP request
1249 */
1250static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_arg *args)
1251{
1252 struct xdr_stream xdr;
1253 struct compound_hdr hdr = {
1254 .nops = 4,
1255 };
1256 int status;
1257
1258 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1259 encode_compound_hdr(&xdr, &hdr);
1260 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1261 goto out;
1262 if ((status = encode_lookup(&xdr, args->name)) != 0)
1263 goto out;
1264 if ((status = encode_getfh(&xdr)) != 0)
1265 goto out;
1266 status = encode_getfattr(&xdr, args->bitmask);
1267out:
1268 return status;
1269}
1270
1271/*
1272 * Encode LOOKUP_ROOT request
1273 */
1274static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_root_arg *args)
1275{
1276 struct xdr_stream xdr;
1277 struct compound_hdr hdr = {
1278 .nops = 3,
1279 };
1280 int status;
1281
1282 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1283 encode_compound_hdr(&xdr, &hdr);
1284 if ((status = encode_putrootfh(&xdr)) != 0)
1285 goto out;
1286 if ((status = encode_getfh(&xdr)) == 0)
1287 status = encode_getfattr(&xdr, args->bitmask);
1288out:
1289 return status;
1290}
1291
1292/*
1293 * Encode REMOVE request
1294 */
1295static int nfs4_xdr_enc_remove(struct rpc_rqst *req, uint32_t *p, const struct nfs4_remove_arg *args)
1296{
1297 struct xdr_stream xdr;
1298 struct compound_hdr hdr = {
1299 .nops = 2,
1300 };
1301 int status;
1302
1303 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1304 encode_compound_hdr(&xdr, &hdr);
1305 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1306 status = encode_remove(&xdr, args->name);
1307 return status;
1308}
1309
1310/*
1311 * Encode RENAME request
1312 */
1313static int nfs4_xdr_enc_rename(struct rpc_rqst *req, uint32_t *p, const struct nfs4_rename_arg *args)
1314{
1315 struct xdr_stream xdr;
1316 struct compound_hdr hdr = {
1317 .nops = 4,
1318 };
1319 int status;
1320
1321 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1322 encode_compound_hdr(&xdr, &hdr);
1323 if ((status = encode_putfh(&xdr, args->old_dir)) != 0)
1324 goto out;
1325 if ((status = encode_savefh(&xdr)) != 0)
1326 goto out;
1327 if ((status = encode_putfh(&xdr, args->new_dir)) != 0)
1328 goto out;
1329 status = encode_rename(&xdr, args->old_name, args->new_name);
1330out:
1331 return status;
1332}
1333
1334/*
1335 * Encode LINK request
1336 */
1337static int nfs4_xdr_enc_link(struct rpc_rqst *req, uint32_t *p, const struct nfs4_link_arg *args)
1338{
1339 struct xdr_stream xdr;
1340 struct compound_hdr hdr = {
1341 .nops = 4,
1342 };
1343 int status;
1344
1345 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1346 encode_compound_hdr(&xdr, &hdr);
1347 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1348 goto out;
1349 if ((status = encode_savefh(&xdr)) != 0)
1350 goto out;
1351 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1352 goto out;
1353 status = encode_link(&xdr, args->name);
1354out:
1355 return status;
1356}
1357
1358/*
1359 * Encode CREATE request
1360 */
1361static int nfs4_xdr_enc_create(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1362{
1363 struct xdr_stream xdr;
1364 struct compound_hdr hdr = {
1365 .nops = 4,
1366 };
1367 int status;
1368
1369 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1370 encode_compound_hdr(&xdr, &hdr);
1371 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1372 goto out;
1373 if ((status = encode_create(&xdr, args)) != 0)
1374 goto out;
1375 if ((status = encode_getfh(&xdr)) != 0)
1376 goto out;
1377 status = encode_getfattr(&xdr, args->bitmask);
1378out:
1379 return status;
1380}
1381
1382/*
1383 * Encode SYMLINK request
1384 */
1385static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1386{
1387 return nfs4_xdr_enc_create(req, p, args);
1388}
1389
1390/*
1391 * Encode GETATTR request
1392 */
1393static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, uint32_t *p, const struct nfs4_getattr_arg *args)
1394{
1395 struct xdr_stream xdr;
1396 struct compound_hdr hdr = {
1397 .nops = 2,
1398 };
1399 int status;
1400
1401 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1402 encode_compound_hdr(&xdr, &hdr);
1403 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1404 status = encode_getfattr(&xdr, args->bitmask);
1405 return status;
1406}
1407
1408/*
1409 * Encode a CLOSE request
1410 */
1411static int nfs4_xdr_enc_close(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1412{
1413 struct xdr_stream xdr;
1414 struct compound_hdr hdr = {
1415 .nops = 2,
1416 };
1417 int status;
1418
1419 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1420 encode_compound_hdr(&xdr, &hdr);
1421 status = encode_putfh(&xdr, args->fh);
1422 if(status)
1423 goto out;
1424 status = encode_close(&xdr, args);
1425out:
1426 return status;
1427}
1428
1429/*
1430 * Encode an OPEN request
1431 */
1432static int nfs4_xdr_enc_open(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1433{
1434 struct xdr_stream xdr;
1435 struct compound_hdr hdr = {
1436 .nops = 4,
1437 };
1438 int status;
1439
cee54fc9
TM		 1440 status = nfs_wait_on_sequence(args->seqid, req->rq_task);
1441 if (status != 0)
1442 goto out;
1da177e4
LT		 1443 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1444 encode_compound_hdr(&xdr, &hdr);
1445 status = encode_putfh(&xdr, args->fh);
1446 if (status)
1447 goto out;
1448 status = encode_open(&xdr, args);
1449 if (status)
1450 goto out;
1451 status = encode_getfh(&xdr);
1452 if (status)
1453 goto out;
1454 status = encode_getfattr(&xdr, args->bitmask);
1455out:
1456 return status;
1457}
1458
1459/*
1460 * Encode an OPEN_CONFIRM request
1461 */
1462static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_open_confirmargs *args)
1463{
1464 struct xdr_stream xdr;
1465 struct compound_hdr hdr = {
1466 .nops = 2,
1467 };
1468 int status;
1469
cee54fc9
TM		 1470 status = nfs_wait_on_sequence(args->seqid, req->rq_task);
1471 if (status != 0)
1472 goto out;
1da177e4
LT		 1473 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1474 encode_compound_hdr(&xdr, &hdr);
1475 status = encode_putfh(&xdr, args->fh);
1476 if(status)
1477 goto out;
1478 status = encode_open_confirm(&xdr, args);
1479out:
1480 return status;
1481}
1482
1483/*
1484 * Encode an OPEN request with no attributes.
1485 */
1486static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1487{
1488 struct xdr_stream xdr;
1489 struct compound_hdr hdr = {
1490 .nops = 2,
1491 };
1492 int status;
1493
cee54fc9
TM		 1494 status = nfs_wait_on_sequence(args->seqid, req->rq_task);
1495 if (status != 0)
1496 goto out;
1da177e4
LT		 1497 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1498 encode_compound_hdr(&xdr, &hdr);
1499 status = encode_putfh(&xdr, args->fh);
1500 if (status)
1501 goto out;
1502 status = encode_open(&xdr, args);
1503out:
1504 return status;
1505}
1506
1507/*
1508 * Encode an OPEN_DOWNGRADE request
1509 */
1510static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1511{
1512 struct xdr_stream xdr;
1513 struct compound_hdr hdr = {
1514 .nops = 2,
1515 };
1516 int status;
1517
1518 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1519 encode_compound_hdr(&xdr, &hdr);
1520 status = encode_putfh(&xdr, args->fh);
1521 if (status)
1522 goto out;
1523 status = encode_open_downgrade(&xdr, args);
1524out:
1525 return status;
1526}
1527
1528/*
1529 * Encode a LOCK request
1530 */
1531static int nfs4_xdr_enc_lock(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1532{
1533 struct xdr_stream xdr;
1534 struct compound_hdr hdr = {
1535 .nops = 2,
1536 };
cee54fc9
TM		 1537 struct nfs_lock_opargs *opargs = args->u.lock;
1538 struct nfs_seqid *seqid;
1da177e4
LT		 1539 int status;
1540
cee54fc9
TM		 1541 if (opargs->new_lock_owner)
1542 seqid = opargs->u.open_lock->lock_seqid;
1543 else
1544 seqid = opargs->u.exist_lock->seqid;
1545 status = nfs_wait_on_sequence(seqid, req->rq_task);
1546 if (status != 0)
1547 goto out;
1da177e4
LT		 1548 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1549 encode_compound_hdr(&xdr, &hdr);
1550 status = encode_putfh(&xdr, args->fh);
1551 if(status)
1552 goto out;
1553 status = encode_lock(&xdr, args);
1554out:
1555 return status;
1556}
1557
1558/*
1559 * Encode a LOCKT request
1560 */
1561static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1562{
1563 struct xdr_stream xdr;
1564 struct compound_hdr hdr = {
1565 .nops = 2,
1566 };
1567 int status;
1568
1569 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1570 encode_compound_hdr(&xdr, &hdr);
1571 status = encode_putfh(&xdr, args->fh);
1572 if(status)
1573 goto out;
1574 status = encode_lockt(&xdr, args);
1575out:
1576 return status;
1577}
1578
1579/*
1580 * Encode a LOCKU request
1581 */
1582static int nfs4_xdr_enc_locku(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1583{
1584 struct xdr_stream xdr;
1585 struct compound_hdr hdr = {
1586 .nops = 2,
1587 };
1588 int status;
1589
cee54fc9
TM		 1590 status = nfs_wait_on_sequence(args->u.locku->seqid, req->rq_task);
1591 if (status != 0)
1592 goto out;
1da177e4
LT		 1593 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1594 encode_compound_hdr(&xdr, &hdr);
1595 status = encode_putfh(&xdr, args->fh);
1596 if(status)
1597 goto out;
1598 status = encode_locku(&xdr, args);
1599out:
1600 return status;
1601}
1602
1603/*
1604 * Encode a READLINK request
1605 */
1606static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readlink *args)
1607{
1608 struct xdr_stream xdr;
1609 struct compound_hdr hdr = {
1610 .nops = 2,
1611 };
1612 int status;
1613
1614 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1615 encode_compound_hdr(&xdr, &hdr);
1616 status = encode_putfh(&xdr, args->fh);
1617 if(status)
1618 goto out;
1619 status = encode_readlink(&xdr, args, req);
1620out:
1621 return status;
1622}
1623
1624/*
1625 * Encode a READDIR request
1626 */
1627static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readdir_arg *args)
1628{
1629 struct xdr_stream xdr;
1630 struct compound_hdr hdr = {
1631 .nops = 2,
1632 };
1633 int status;
1634
1635 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1636 encode_compound_hdr(&xdr, &hdr);
1637 status = encode_putfh(&xdr, args->fh);
1638 if(status)
1639 goto out;
1640 status = encode_readdir(&xdr, args, req);
1641out:
1642 return status;
1643}
1644
1645/*
1646 * Encode a READ request
1647 */
1648static int nfs4_xdr_enc_read(struct rpc_rqst *req, uint32_t *p, struct nfs_readargs *args)
1649{
1650 struct rpc_auth *auth = req->rq_task->tk_auth;
1651 struct xdr_stream xdr;
1652 struct compound_hdr hdr = {
1653 .nops = 2,
1654 };
1655 int replen, status;
1656
1657 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1658 encode_compound_hdr(&xdr, &hdr);
1659 status = encode_putfh(&xdr, args->fh);
1660 if (status)
1661 goto out;
1662 status = encode_read(&xdr, args);
1663 if (status)
1664 goto out;
1665
1666 /* set up reply kvec
1667 * toplevel status + taglen=0 + rescount + OP_PUTFH + status
1668 * + OP_READ + status + eof + datalen = 9
1669 */
1670 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
1671 xdr_inline_pages(&req->rq_rcv_buf, replen,
1672 args->pages, args->pgbase, args->count);
1673out:
1674 return status;
1675}
1676
1677/*
1678 * Encode an SETATTR request
1679 */
1680static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, uint32_t *p, struct nfs_setattrargs *args)
1681
1682{
1683 struct xdr_stream xdr;
1684 struct compound_hdr hdr = {
1685 .nops = 3,
1686 };
1687 int status;
1688
1689 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1690 encode_compound_hdr(&xdr, &hdr);
1691 status = encode_putfh(&xdr, args->fh);
1692 if(status)
1693 goto out;
1694 status = encode_setattr(&xdr, args, args->server);
1695 if(status)
1696 goto out;
1697 status = encode_getfattr(&xdr, args->bitmask);
1698out:
1699 return status;
1700}
1701
029d105e
BF		 1702/*
1703 * Encode a GETACL request
1704 */
1705static int
1706nfs4_xdr_enc_getacl(struct rpc_rqst *req, uint32_t *p,
1707 struct nfs_getaclargs *args)
1708{
1709 struct xdr_stream xdr;
1710 struct rpc_auth *auth = req->rq_task->tk_auth;
1711 struct compound_hdr hdr = {
1712 .nops = 2,
1713 };
1714 int replen, status;
1715
1716 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1717 encode_compound_hdr(&xdr, &hdr);
1718 status = encode_putfh(&xdr, args->fh);
1719 if (status)
1720 goto out;
1721 status = encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0);
1722 /* set up reply buffer: */
1723 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
1724 xdr_inline_pages(&req->rq_rcv_buf, replen,
1725 args->acl_pages, args->acl_pgbase, args->acl_len);
1726out:
1727 return status;
1728}
1729
1da177e4
LT		 1730/*
1731 * Encode a WRITE request
1732 */
1733static int nfs4_xdr_enc_write(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1734{
1735 struct xdr_stream xdr;
1736 struct compound_hdr hdr = {
1737 .nops = 2,
1738 };
1739 int status;
1740
1741 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1742 encode_compound_hdr(&xdr, &hdr);
1743 status = encode_putfh(&xdr, args->fh);
1744 if (status)
1745 goto out;
1746 status = encode_write(&xdr, args);
1747out:
1748 return status;
1749}
1750
1751/*
1752 * a COMMIT request
1753 */
1754static int nfs4_xdr_enc_commit(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1755{
1756 struct xdr_stream xdr;
1757 struct compound_hdr hdr = {
1758 .nops = 2,
1759 };
1760 int status;
1761
1762 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1763 encode_compound_hdr(&xdr, &hdr);
1764 status = encode_putfh(&xdr, args->fh);
1765 if (status)
1766 goto out;
1767 status = encode_commit(&xdr, args);
1768out:
1769 return status;
1770}
1771
1772/*
1773 * FSINFO request
1774 */
1775static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs4_fsinfo_arg *args)
1776{
1777 struct xdr_stream xdr;
1778 struct compound_hdr hdr = {
1779 .nops = 2,
1780 };
1781 int status;
1782
1783 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1784 encode_compound_hdr(&xdr, &hdr);
1785 status = encode_putfh(&xdr, args->fh);
1786 if (!status)
1787 status = encode_fsinfo(&xdr, args->bitmask);
1788 return status;
1789}
1790
1791/*
1792 * a PATHCONF request
1793 */
1794static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct nfs4_pathconf_arg *args)
1795{
1da177e4
LT		 1796 struct xdr_stream xdr;
1797 struct compound_hdr hdr = {
1798 .nops = 2,
1799 };
1800 int status;
1801
1802 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1803 encode_compound_hdr(&xdr, &hdr);
1804 status = encode_putfh(&xdr, args->fh);
1805 if (!status)
1806 status = encode_getattr_one(&xdr,
1807 args->bitmask[0] & nfs4_pathconf_bitmap[0]);
1808 return status;
1809}
1810
1811/*
1812 * a STATFS request
1813 */
1814static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, uint32_t *p, const struct nfs4_statfs_arg *args)
1815{
1da177e4
LT		 1816 struct xdr_stream xdr;
1817 struct compound_hdr hdr = {
1818 .nops = 2,
1819 };
1820 int status;
1821
1822 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1823 encode_compound_hdr(&xdr, &hdr);
1824 status = encode_putfh(&xdr, args->fh);
1825 if (status == 0)
1826 status = encode_getattr_two(&xdr,
1827 args->bitmask[0] & nfs4_statfs_bitmap[0],
1828 args->bitmask[1] & nfs4_statfs_bitmap[1]);
1829 return status;
1830}
1831
1832/*
1833 * GETATTR_BITMAP request
1834 */
1835static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, uint32_t *p, const struct nfs_fh *fhandle)
1836{
1837 struct xdr_stream xdr;
1838 struct compound_hdr hdr = {
1839 .nops = 2,
1840 };
1841 int status;
1842
1843 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1844 encode_compound_hdr(&xdr, &hdr);
1845 status = encode_putfh(&xdr, fhandle);
1846 if (status == 0)
1847 status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
1848 FATTR4_WORD0_LINK_SUPPORT|
1849 FATTR4_WORD0_SYMLINK_SUPPORT|
1850 FATTR4_WORD0_ACLSUPPORT);
1851 return status;
1852}
1853
1854/*
1855 * a RENEW request
1856 */
1857static int nfs4_xdr_enc_renew(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1858{
1859 struct xdr_stream xdr;
1860 struct compound_hdr hdr = {
1861 .nops = 1,
1862 };
1863
1864 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1865 encode_compound_hdr(&xdr, &hdr);
1866 return encode_renew(&xdr, clp);
1867}
1868
1869/*
1870 * a SETCLIENTID request
1871 */
1872static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, uint32_t *p, struct nfs4_setclientid *sc)
1873{
1874 struct xdr_stream xdr;
1875 struct compound_hdr hdr = {
1876 .nops = 1,
1877 };
1878
1879 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1880 encode_compound_hdr(&xdr, &hdr);
1881 return encode_setclientid(&xdr, sc);
1882}
1883
1884/*
1885 * a SETCLIENTID_CONFIRM request
1886 */
1887static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1888{
1889 struct xdr_stream xdr;
1890 struct compound_hdr hdr = {
1891 .nops = 3,
1892 };
1893 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
1894 int status;
1895
1896 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1897 encode_compound_hdr(&xdr, &hdr);
1898 status = encode_setclientid_confirm(&xdr, clp);
1899 if (!status)
1900 status = encode_putrootfh(&xdr);
1901 if (!status)
1902 status = encode_fsinfo(&xdr, lease_bitmap);
1903 return status;
1904}
1905
1906/*
1907 * DELEGRETURN request
1908 */
1909static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, uint32_t *p, const struct nfs4_delegreturnargs *args)
1910{
1911 struct xdr_stream xdr;
1912 struct compound_hdr hdr = {
1913 .nops = 2,
1914 };
1915 int status;
1916
1917 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1918 encode_compound_hdr(&xdr, &hdr);
1919 if ((status = encode_putfh(&xdr, args->fhandle)) == 0)
1920 status = encode_delegreturn(&xdr, args->stateid);
1921 return status;
1922}
1923
1924/*
1925 * START OF "GENERIC" DECODE ROUTINES.
1926 * These may look a little ugly since they are imported from a "generic"
1927 * set of XDR encode/decode routines which are intended to be shared by
1928 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
1929 *
1930 * If the pain of reading these is too great, it should be a straightforward
1931 * task to translate them into Linux-specific versions which are more
1932 * consistent with the style used in NFSv2/v3...
1933 */
1934#define READ32(x) (x) = ntohl(*p++)
1935#define READ64(x) do { \
1936 (x) = (u64)ntohl(*p++) << 32; \
1937 (x) |= ntohl(*p++); \
1938} while (0)
1939#define READTIME(x) do { \
1940 p++; \
1941 (x.tv_sec) = ntohl(*p++); \
1942 (x.tv_nsec) = ntohl(*p++); \
1943} while (0)
1944#define COPYMEM(x,nbytes) do { \
1945 memcpy((x), p, nbytes); \
1946 p += XDR_QUADLEN(nbytes); \
1947} while (0)
1948
1949#define READ_BUF(nbytes) do { \
1950 p = xdr_inline_decode(xdr, nbytes); \
1951 if (!p) { \
1952 printk(KERN_WARNING "%s: reply buffer overflowed in line %d.", \
1953 __FUNCTION__, __LINE__); \
1954 return -EIO; \
1955 } \
1956} while (0)
1957
1958static int decode_opaque_inline(struct xdr_stream *xdr, uint32_t *len, char **string)
1959{
1960 uint32_t *p;
1961
1962 READ_BUF(4);
1963 READ32(*len);
1964 READ_BUF(*len);
1965 *string = (char *)p;
1966 return 0;
1967}
1968
1969static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
1970{
1971 uint32_t *p;
1972
1973 READ_BUF(8);
1974 READ32(hdr->status);
1975 READ32(hdr->taglen);
1976
1977 READ_BUF(hdr->taglen + 4);
1978 hdr->tag = (char *)p;
1979 p += XDR_QUADLEN(hdr->taglen);
1980 READ32(hdr->nops);
1981 return 0;
1982}
1983
1984static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
1985{
1986 uint32_t *p;
1987 uint32_t opnum;
1988 int32_t nfserr;
1989
1990 READ_BUF(8);
1991 READ32(opnum);
1992 if (opnum != expected) {
1993 printk(KERN_NOTICE
1994 "nfs4_decode_op_hdr: Server returned operation"
1995 " %d but we issued a request for %d\n",
1996 opnum, expected);
1997 return -EIO;
1998 }
1999 READ32(nfserr);
2000 if (nfserr != NFS_OK)
2001 return -nfs_stat_to_errno(nfserr);
2002 return 0;
2003}
2004
2005/* Dummy routine */
2006static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs4_client *clp)
2007{
2008 uint32_t *p;
2009 uint32_t strlen;
2010 char *str;
2011
2012 READ_BUF(12);
2013 return decode_opaque_inline(xdr, &strlen, &str);
2014}
2015
2016static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2017{
2018 uint32_t bmlen, *p;
2019
2020 READ_BUF(4);
2021 READ32(bmlen);
2022
2023 bitmap[0] = bitmap[1] = 0;
2024 READ_BUF((bmlen << 2));
2025 if (bmlen > 0) {
2026 READ32(bitmap[0]);
2027 if (bmlen > 1)
2028 READ32(bitmap[1]);
2029 }
2030 return 0;
2031}
2032
2033static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, uint32_t **savep)
2034{
2035 uint32_t *p;
2036
2037 READ_BUF(4);
2038 READ32(*attrlen);
2039 *savep = xdr->p;
2040 return 0;
2041}
2042
2043static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2044{
2045 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2046 decode_attr_bitmap(xdr, bitmask);
2047 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2048 } else
2049 bitmask[0] = bitmask[1] = 0;
2050 dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]);
2051 return 0;
2052}
2053
2054static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2055{
2056 uint32_t *p;
2057
2058 *type = 0;
2059 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2060 return -EIO;
2061 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2062 READ_BUF(4);
2063 READ32(*type);
2064 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2065 dprintk("%s: bad type %d\n", __FUNCTION__, *type);
2066 return -EIO;
2067 }
2068 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2069 }
2070 dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type);
2071 return 0;
2072}
2073
2074static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2075{
2076 uint32_t *p;
2077
2078 *change = 0;
2079 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2080 return -EIO;
2081 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2082 READ_BUF(8);
2083 READ64(*change);
2084 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2085 }
2086 dprintk("%s: change attribute=%Lu\n", __FUNCTION__,
2087 (unsigned long long)*change);
2088 return 0;
2089}
2090
2091static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2092{
2093 uint32_t *p;
2094
2095 *size = 0;
2096 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2097 return -EIO;
2098 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2099 READ_BUF(8);
2100 READ64(*size);
2101 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2102 }
2103 dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size);
2104 return 0;
2105}
2106
2107static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2108{
2109 uint32_t *p;
2110
2111 *res = 0;
2112 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2113 return -EIO;
2114 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2115 READ_BUF(4);
2116 READ32(*res);
2117 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2118 }
2119 dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2120 return 0;
2121}
2122
2123static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2124{
2125 uint32_t *p;
2126
2127 *res = 0;
2128 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2129 return -EIO;
2130 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2131 READ_BUF(4);
2132 READ32(*res);
2133 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2134 }
2135 dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2136 return 0;
2137}
2138
2139static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fsid *fsid)
2140{
2141 uint32_t *p;
2142
2143 fsid->major = 0;
2144 fsid->minor = 0;
2145 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2146 return -EIO;
2147 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2148 READ_BUF(16);
2149 READ64(fsid->major);
2150 READ64(fsid->minor);
2151 bitmap[0] &= ~FATTR4_WORD0_FSID;
2152 }
2153 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__,
2154 (unsigned long long)fsid->major,
2155 (unsigned long long)fsid->minor);
2156 return 0;
2157}
2158
2159static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2160{
2161 uint32_t *p;
2162
2163 *res = 60;
2164 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2165 return -EIO;
2166 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2167 READ_BUF(4);
2168 READ32(*res);
2169 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2170 }
2171 dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res);
2172 return 0;
2173}
2174
2175static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2176{
2177 uint32_t *p;
2178
2179 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2180 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2181 return -EIO;
2182 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2183 READ_BUF(4);
2184 READ32(*res);
2185 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2186 }
2187 dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res);
2188 return 0;
2189}
2190
2191static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2192{
2193 uint32_t *p;
2194
2195 *fileid = 0;
2196 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2197 return -EIO;
2198 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2199 READ_BUF(8);
2200 READ64(*fileid);
2201 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2202 }
2203 dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2204 return 0;
2205}
2206
2207static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2208{
2209 uint32_t *p;
2210 int status = 0;
2211
2212 *res = 0;
2213 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2214 return -EIO;
2215 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2216 READ_BUF(8);
2217 READ64(*res);
2218 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2219 }
2220 dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2221 return status;
2222}
2223
2224static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2225{
2226 uint32_t *p;
2227 int status = 0;
2228
2229 *res = 0;
2230 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2231 return -EIO;
2232 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2233 READ_BUF(8);
2234 READ64(*res);
2235 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2236 }
2237 dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2238 return status;
2239}
2240
2241static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2242{
2243 uint32_t *p;
2244 int status = 0;
2245
2246 *res = 0;
2247 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2248 return -EIO;
2249 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2250 READ_BUF(8);
2251 READ64(*res);
2252 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2253 }
2254 dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2255 return status;
2256}
2257
2258static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2259{
2260 uint32_t *p;
2261 int status = 0;
2262
2263 *res = 0;
2264 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2265 return -EIO;
2266 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2267 READ_BUF(8);
2268 READ64(*res);
2269 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2270 }
2271 dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2272 return status;
2273}
2274
2275static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2276{
2277 uint32_t *p;
2278 int status = 0;
2279
2280 *maxlink = 1;
2281 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2282 return -EIO;
2283 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2284 READ_BUF(4);
2285 READ32(*maxlink);
2286 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2287 }
2288 dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink);
2289 return status;
2290}
2291
2292static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2293{
2294 uint32_t *p;
2295 int status = 0;
2296
2297 *maxname = 1024;
2298 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2299 return -EIO;
2300 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2301 READ_BUF(4);
2302 READ32(*maxname);
2303 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2304 }
2305 dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname);
2306 return status;
2307}
2308
2309static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2310{
2311 uint32_t *p;
2312 int status = 0;
2313
2314 *res = 1024;
2315 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2316 return -EIO;
2317 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2318 uint64_t maxread;
2319 READ_BUF(8);
2320 READ64(maxread);
2321 if (maxread > 0x7FFFFFFF)
2322 maxread = 0x7FFFFFFF;
2323 *res = (uint32_t)maxread;
2324 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2325 }
2326 dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res);
2327 return status;
2328}
2329
2330static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2331{
2332 uint32_t *p;
2333 int status = 0;
2334
2335 *res = 1024;
2336 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2337 return -EIO;
2338 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2339 uint64_t maxwrite;
2340 READ_BUF(8);
2341 READ64(maxwrite);
2342 if (maxwrite > 0x7FFFFFFF)
2343 maxwrite = 0x7FFFFFFF;
2344 *res = (uint32_t)maxwrite;
2345 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2346 }
2347 dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res);
2348 return status;
2349}
2350
2351static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
2352{
2353 uint32_t *p;
2354
2355 *mode = 0;
2356 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
2357 return -EIO;
2358 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
2359 READ_BUF(4);
2360 READ32(*mode);
2361 *mode &= ~S_IFMT;
2362 bitmap[1] &= ~FATTR4_WORD1_MODE;
2363 }
2364 dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode);
2365 return 0;
2366}
2367
2368static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
2369{
2370 uint32_t *p;
2371
2372 *nlink = 1;
2373 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
2374 return -EIO;
2375 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
2376 READ_BUF(4);
2377 READ32(*nlink);
2378 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
2379 }
2380 dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink);
2381 return 0;
2382}
2383
2384static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *uid)
2385{
2386 uint32_t len, *p;
2387
2388 *uid = -2;
2389 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
2390 return -EIO;
2391 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
2392 READ_BUF(4);
2393 READ32(len);
2394 READ_BUF(len);
2395 if (len < XDR_MAX_NETOBJ) {
2396 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
2397 dprintk("%s: nfs_map_name_to_uid failed!\n",
2398 __FUNCTION__);
2399 } else
2400 printk(KERN_WARNING "%s: name too long (%u)!\n",
2401 __FUNCTION__, len);
2402 bitmap[1] &= ~FATTR4_WORD1_OWNER;
2403 }
2404 dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid);
2405 return 0;
2406}
2407
2408static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *gid)
2409{
2410 uint32_t len, *p;
2411
2412 *gid = -2;
2413 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
2414 return -EIO;
2415 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
2416 READ_BUF(4);
2417 READ32(len);
2418 READ_BUF(len);
2419 if (len < XDR_MAX_NETOBJ) {
2420 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
2421 dprintk("%s: nfs_map_group_to_gid failed!\n",
2422 __FUNCTION__);
2423 } else
2424 printk(KERN_WARNING "%s: name too long (%u)!\n",
2425 __FUNCTION__, len);
2426 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
2427 }
2428 dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid);
2429 return 0;
2430}
2431
2432static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
2433{
2434 uint32_t major = 0, minor = 0, *p;
2435
2436 *rdev = MKDEV(0,0);
2437 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
2438 return -EIO;
2439 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
2440 dev_t tmp;
2441
2442 READ_BUF(8);
2443 READ32(major);
2444 READ32(minor);
2445 tmp = MKDEV(major, minor);
2446 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
2447 *rdev = tmp;
2448 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
2449 }
2450 dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor);
2451 return 0;
2452}
2453
2454static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2455{
2456 uint32_t *p;
2457 int status = 0;
2458
2459 *res = 0;
2460 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
2461 return -EIO;
2462 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
2463 READ_BUF(8);
2464 READ64(*res);
2465 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
2466 }
2467 dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2468 return status;
2469}
2470
2471static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2472{
2473 uint32_t *p;
2474 int status = 0;
2475
2476 *res = 0;
2477 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
2478 return -EIO;
2479 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
2480 READ_BUF(8);
2481 READ64(*res);
2482 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
2483 }
2484 dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2485 return status;
2486}
2487
2488static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2489{
2490 uint32_t *p;
2491 int status = 0;
2492
2493 *res = 0;
2494 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
2495 return -EIO;
2496 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
2497 READ_BUF(8);
2498 READ64(*res);
2499 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
2500 }
2501 dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2502 return status;
2503}
2504
2505static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
2506{
2507 uint32_t *p;
2508
2509 *used = 0;
2510 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
2511 return -EIO;
2512 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
2513 READ_BUF(8);
2514 READ64(*used);
2515 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
2516 }
2517 dprintk("%s: space used=%Lu\n", __FUNCTION__,
2518 (unsigned long long)*used);
2519 return 0;
2520}
2521
2522static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
2523{
2524 uint32_t *p;
2525 uint64_t sec;
2526 uint32_t nsec;
2527
2528 READ_BUF(12);
2529 READ64(sec);
2530 READ32(nsec);
2531 time->tv_sec = (time_t)sec;
2532 time->tv_nsec = (long)nsec;
2533 return 0;
2534}
2535
2536static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2537{
2538 int status = 0;
2539
2540 time->tv_sec = 0;
2541 time->tv_nsec = 0;
2542 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
2543 return -EIO;
2544 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
2545 status = decode_attr_time(xdr, time);
2546 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
2547 }
2548 dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2549 return status;
2550}
2551
2552static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2553{
2554 int status = 0;
2555
2556 time->tv_sec = 0;
2557 time->tv_nsec = 0;
2558 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
2559 return -EIO;
2560 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
2561 status = decode_attr_time(xdr, time);
2562 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
2563 }
2564 dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2565 return status;
2566}
2567
2568static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2569{
2570 int status = 0;
2571
2572 time->tv_sec = 0;
2573 time->tv_nsec = 0;
2574 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
2575 return -EIO;
2576 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
2577 status = decode_attr_time(xdr, time);
2578 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
2579 }
2580 dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2581 return status;
2582}
2583
2584static int verify_attr_len(struct xdr_stream *xdr, uint32_t *savep, uint32_t attrlen)
2585{
2586 unsigned int attrwords = XDR_QUADLEN(attrlen);
2587 unsigned int nwords = xdr->p - savep;
2588
2589 if (unlikely(attrwords != nwords)) {
2590 printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n",
2591 __FUNCTION__,
2592 attrwords << 2,
2593 (attrwords < nwords) ? '<' : '>',
2594 nwords << 2);
2595 return -EIO;
2596 }
2597 return 0;
2598}
2599
2600static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2601{
2602 uint32_t *p;
2603
2604 READ_BUF(20);
2605 READ32(cinfo->atomic);
2606 READ64(cinfo->before);
2607 READ64(cinfo->after);
2608 return 0;
2609}
2610
2611static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
2612{
2613 uint32_t *p;
2614 uint32_t supp, acc;
2615 int status;
2616
2617 status = decode_op_hdr(xdr, OP_ACCESS);
2618 if (status)
2619 return status;
2620 READ_BUF(8);
2621 READ32(supp);
2622 READ32(acc);
2623 access->supported = supp;
2624 access->access = acc;
2625 return 0;
2626}
2627
2628static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
2629{
2630 uint32_t *p;
2631 int status;
2632
2633 status = decode_op_hdr(xdr, OP_CLOSE);
2634 if (status)
2635 return status;
2636 READ_BUF(sizeof(res->stateid.data));
2637 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2638 return 0;
2639}
2640
2641static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
2642{
2643 uint32_t *p;
2644 int status;
2645
2646 status = decode_op_hdr(xdr, OP_COMMIT);
2647 if (status)
2648 return status;
2649 READ_BUF(8);
2650 COPYMEM(res->verf->verifier, 8);
2651 return 0;
2652}
2653
2654static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2655{
2656 uint32_t *p;
2657 uint32_t bmlen;
2658 int status;
2659
2660 status = decode_op_hdr(xdr, OP_CREATE);
2661 if (status)
2662 return status;
2663 if ((status = decode_change_info(xdr, cinfo)))
2664 return status;
2665 READ_BUF(4);
2666 READ32(bmlen);
2667 READ_BUF(bmlen << 2);
2668 return 0;
2669}
2670
2671static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
2672{
2673 uint32_t *savep;
2674 uint32_t attrlen,
2675 bitmap[2] = {0};
2676 int status;
2677
2678 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2679 goto xdr_error;
2680 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2681 goto xdr_error;
2682 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2683 goto xdr_error;
2684 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
2685 goto xdr_error;
2686 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
2687 goto xdr_error;
2688 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
2689 goto xdr_error;
2690 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
2691 goto xdr_error;
2692 status = verify_attr_len(xdr, savep, attrlen);
2693xdr_error:
2694 if (status != 0)
2695 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2696 return status;
2697}
2698
2699static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
2700{
2701 uint32_t *savep;
2702 uint32_t attrlen,
2703 bitmap[2] = {0};
2704 int status;
2705
2706 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2707 goto xdr_error;
2708 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2709 goto xdr_error;
2710 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2711 goto xdr_error;
2712
2713 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
2714 goto xdr_error;
2715 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
2716 goto xdr_error;
2717 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
2718 goto xdr_error;
2719 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
2720 goto xdr_error;
2721 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
2722 goto xdr_error;
2723 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
2724 goto xdr_error;
2725
2726 status = verify_attr_len(xdr, savep, attrlen);
2727xdr_error:
2728 if (status != 0)
2729 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2730 return status;
2731}
2732
2733static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
2734{
2735 uint32_t *savep;
2736 uint32_t attrlen,
2737 bitmap[2] = {0};
2738 int status;
2739
2740 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2741 goto xdr_error;
2742 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2743 goto xdr_error;
2744 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2745 goto xdr_error;
2746
2747 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
2748 goto xdr_error;
2749 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
2750 goto xdr_error;
2751
2752 status = verify_attr_len(xdr, savep, attrlen);
2753xdr_error:
2754 if (status != 0)
2755 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2756 return status;
2757}
2758
2759static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
2760{
2761 uint32_t *savep;
2762 uint32_t attrlen,
2763 bitmap[2] = {0},
2764 type;
2765 int status, fmode = 0;
2766
2767 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2768 goto xdr_error;
2769 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2770 goto xdr_error;
2771
2772 fattr->bitmap[0] = bitmap[0];
2773 fattr->bitmap[1] = bitmap[1];
2774
2775 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2776 goto xdr_error;
2777
2778
2779 if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
2780 goto xdr_error;
2781 fattr->type = nfs_type2fmt[type].nfs2type;
2782 fmode = nfs_type2fmt[type].mode;
2783
2784 if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
2785 goto xdr_error;
2786 if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
2787 goto xdr_error;
2788 if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid_u.nfs4)) != 0)
2789 goto xdr_error;
2790 if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
2791 goto xdr_error;
2792 if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
2793 goto xdr_error;
2794 fattr->mode |= fmode;
2795 if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
2796 goto xdr_error;
2797 if ((status = decode_attr_owner(xdr, bitmap, server->nfs4_state, &fattr->uid)) != 0)
2798 goto xdr_error;
2799 if ((status = decode_attr_group(xdr, bitmap, server->nfs4_state, &fattr->gid)) != 0)
2800 goto xdr_error;
2801 if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
2802 goto xdr_error;
2803 if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
2804 goto xdr_error;
2805 if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
2806 goto xdr_error;
2807 if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
2808 goto xdr_error;
2809 if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
2810 goto xdr_error;
2811 if ((status = verify_attr_len(xdr, savep, attrlen)) == 0) {
2812 fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
2813 fattr->timestamp = jiffies;
2814 }
2815xdr_error:
2816 if (status != 0)
2817 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2818 return status;
2819}
2820
2821
2822static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
2823{
2824 uint32_t *savep;
2825 uint32_t attrlen, bitmap[2];
2826 int status;
2827
2828 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2829 goto xdr_error;
2830 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2831 goto xdr_error;
2832 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2833 goto xdr_error;
2834
2835 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
2836
2837 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
2838 goto xdr_error;
2839 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
2840 goto xdr_error;
2841 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
2842 goto xdr_error;
2843 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
2844 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
2845 goto xdr_error;
2846 fsinfo->wtpref = fsinfo->wtmax;
2847
2848 status = verify_attr_len(xdr, savep, attrlen);
2849xdr_error:
2850 if (status != 0)
2851 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2852 return status;
2853}
2854
2855static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
2856{
2857 uint32_t *p;
2858 uint32_t len;
2859 int status;
2860
2861 status = decode_op_hdr(xdr, OP_GETFH);
2862 if (status)
2863 return status;
2864 /* Zero handle first to allow comparisons */
2865 memset(fh, 0, sizeof(*fh));
2866
2867 READ_BUF(4);
2868 READ32(len);
2869 if (len > NFS4_FHSIZE)
2870 return -EIO;
2871 fh->size = len;
2872 READ_BUF(len);
2873 COPYMEM(fh->data, len);
2874 return 0;
2875}
2876
2877static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2878{
2879 int status;
2880
2881 status = decode_op_hdr(xdr, OP_LINK);
2882 if (status)
2883 return status;
2884 return decode_change_info(xdr, cinfo);
2885}
2886
2887/*
2888 * We create the owner, so we know a proper owner.id length is 4.
2889 */
2890static int decode_lock_denied (struct xdr_stream *xdr, struct nfs_lock_denied *denied)
2891{
2892 uint32_t *p;
2893 uint32_t namelen;
2894
2895 READ_BUF(32);
2896 READ64(denied->offset);
2897 READ64(denied->length);
2898 READ32(denied->type);
2899 READ64(denied->owner.clientid);
2900 READ32(namelen);
2901 READ_BUF(namelen);
2902 if (namelen == 4)
2903 READ32(denied->owner.id);
2904 return -NFS4ERR_DENIED;
2905}
2906
2907static int decode_lock(struct xdr_stream *xdr, struct nfs_lockres *res)
2908{
2909 uint32_t *p;
2910 int status;
2911
2912 status = decode_op_hdr(xdr, OP_LOCK);
2913 if (status == 0) {
2914 READ_BUF(sizeof(nfs4_stateid));
2915 COPYMEM(&res->u.stateid, sizeof(res->u.stateid));
2916 } else if (status == -NFS4ERR_DENIED)
2917 return decode_lock_denied(xdr, &res->u.denied);
2918 return status;
2919}
2920
2921static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockres *res)
2922{
2923 int status;
2924 status = decode_op_hdr(xdr, OP_LOCKT);
2925 if (status == -NFS4ERR_DENIED)
2926 return decode_lock_denied(xdr, &res->u.denied);
2927 return status;
2928}
2929
2930static int decode_locku(struct xdr_stream *xdr, struct nfs_lockres *res)
2931{
2932 uint32_t *p;
2933 int status;
2934
2935 status = decode_op_hdr(xdr, OP_LOCKU);
2936 if (status == 0) {
2937 READ_BUF(sizeof(nfs4_stateid));
2938 COPYMEM(&res->u.stateid, sizeof(res->u.stateid));
2939 }
2940 return status;
2941}
2942
2943static int decode_lookup(struct xdr_stream *xdr)
2944{
2945 return decode_op_hdr(xdr, OP_LOOKUP);
2946}
2947
2948/* This is too sick! */
2949static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
2950{
2951 uint32_t *p;
2952 uint32_t limit_type, nblocks, blocksize;
2953
2954 READ_BUF(12);
2955 READ32(limit_type);
2956 switch (limit_type) {
2957 case 1:
2958 READ64(*maxsize);
2959 break;
2960 case 2:
2961 READ32(nblocks);
2962 READ32(blocksize);
2963 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
2964 }
2965 return 0;
2966}
2967
2968static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
2969{
2970 uint32_t *p;
2971 uint32_t delegation_type;
2972
2973 READ_BUF(4);
2974 READ32(delegation_type);
2975 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
2976 res->delegation_type = 0;
2977 return 0;
2978 }
2979 READ_BUF(20);
2980 COPYMEM(res->delegation.data, sizeof(res->delegation.data));
2981 READ32(res->do_recall);
2982 switch (delegation_type) {
2983 case NFS4_OPEN_DELEGATE_READ:
2984 res->delegation_type = FMODE_READ;
2985 break;
2986 case NFS4_OPEN_DELEGATE_WRITE:
2987 res->delegation_type = FMODE_WRITE|FMODE_READ;
2988 if (decode_space_limit(xdr, &res->maxsize) < 0)
2989 return -EIO;
2990 }
2991 return decode_ace(xdr, NULL, res->server->nfs4_state);
2992}
2993
2994static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
2995{
2996 uint32_t *p;
2997 uint32_t bmlen;
2998 int status;
2999
3000 status = decode_op_hdr(xdr, OP_OPEN);
3001 if (status)
3002 return status;
3003 READ_BUF(sizeof(res->stateid.data));
3004 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3005
3006 decode_change_info(xdr, &res->cinfo);
3007
3008 READ_BUF(8);
3009 READ32(res->rflags);
3010 READ32(bmlen);
3011 if (bmlen > 10)
3012 goto xdr_error;
3013
3014 READ_BUF(bmlen << 2);
3015 p += bmlen;
3016 return decode_delegation(xdr, res);
3017xdr_error:
3018 printk(KERN_NOTICE "%s: xdr error!\n", __FUNCTION__);
3019 return -EIO;
3020}
3021
3022static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3023{
3024 uint32_t *p;
3025 int status;
3026
3027 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3028 if (status)
3029 return status;
3030 READ_BUF(sizeof(res->stateid.data));
3031 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3032 return 0;
3033}
3034
3035static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3036{
3037 uint32_t *p;
3038 int status;
3039
3040 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3041 if (status)
3042 return status;
3043 READ_BUF(sizeof(res->stateid.data));
3044 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3045 return 0;
3046}
3047
3048static int decode_putfh(struct xdr_stream *xdr)
3049{
3050 return decode_op_hdr(xdr, OP_PUTFH);
3051}
3052
3053static int decode_putrootfh(struct xdr_stream *xdr)
3054{
3055 return decode_op_hdr(xdr, OP_PUTROOTFH);
3056}
3057
3058static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3059{
3060 struct kvec *iov = req->rq_rcv_buf.head;
3061 uint32_t *p;
3062 uint32_t count, eof, recvd, hdrlen;
3063 int status;
3064
3065 status = decode_op_hdr(xdr, OP_READ);
3066 if (status)
3067 return status;
3068 READ_BUF(8);
3069 READ32(eof);
3070 READ32(count);
3071 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3072 recvd = req->rq_rcv_buf.len - hdrlen;
3073 if (count > recvd) {
3074 printk(KERN_WARNING "NFS: server cheating in read reply: "
3075 "count %u > recvd %u\n", count, recvd);
3076 count = recvd;
3077 eof = 0;
3078 }
3079 xdr_read_pages(xdr, count);
3080 res->eof = eof;
3081 res->count = count;
3082 return 0;
3083}
3084
3085static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3086{
3087 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3088 struct page *page = *rcvbuf->pages;
3089 struct kvec *iov = rcvbuf->head;
3090 unsigned int nr, pglen = rcvbuf->page_len;
3091 uint32_t *end, *entry, *p, *kaddr;
3092 uint32_t len, attrlen;
3093 int hdrlen, recvd, status;
3094
3095 status = decode_op_hdr(xdr, OP_READDIR);
3096 if (status)
3097 return status;
3098 READ_BUF(8);
3099 COPYMEM(readdir->verifier.data, 8);
eadf4598
TM		 3100 dprintk("%s: verifier = 0x%x%x\n",
3101 __FUNCTION__,
3102 ((u32 *)readdir->verifier.data)[0],
3103 ((u32 *)readdir->verifier.data)[1]);
3104
1da177e4
LT		 3105
3106 hdrlen = (char *) p - (char *) iov->iov_base;
3107 recvd = rcvbuf->len - hdrlen;
3108 if (pglen > recvd)
3109 pglen = recvd;
3110 xdr_read_pages(xdr, pglen);
3111
3112 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3113 kaddr = p = (uint32_t *) kmap_atomic(page, KM_USER0);
3114 end = (uint32_t *) ((char *)p + pglen + readdir->pgbase);
3115 entry = p;
3116 for (nr = 0; *p++; nr++) {
3117 if (p + 3 > end)
3118 goto short_pkt;
eadf4598 3119 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
1da177e4
LT		 3120 p += 2; /* cookie */
3121 len = ntohl(*p++); /* filename length */
3122 if (len > NFS4_MAXNAMLEN) {
3123 printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len);
3124 goto err_unmap;
3125 }
eadf4598 3126 dprintk("filename = %*s\n", len, (char *)p);
1da177e4
LT		 3127 p += XDR_QUADLEN(len);
3128 if (p + 1 > end)
3129 goto short_pkt;
3130 len = ntohl(*p++); /* bitmap length */
3131 p += len;
3132 if (p + 1 > end)
3133 goto short_pkt;
3134 attrlen = XDR_QUADLEN(ntohl(*p++));
3135 p += attrlen; /* attributes */
3136 if (p + 2 > end)
3137 goto short_pkt;
3138 entry = p;
3139 }
3140 if (!nr && (entry[0] != 0 || entry[1] == 0))
3141 goto short_pkt;
3142out:
3143 kunmap_atomic(kaddr, KM_USER0);
3144 return 0;
3145short_pkt:
eadf4598 3146 dprintk("%s: short packet at entry %d\n", __FUNCTION__, nr);
1da177e4
LT		 3147 entry[0] = entry[1] = 0;
3148 /* truncate listing ? */
3149 if (!nr) {
3150 printk(KERN_NOTICE "NFS: readdir reply truncated!\n");
3151 entry[1] = 1;
3152 }
3153 goto out;
3154err_unmap:
3155 kunmap_atomic(kaddr, KM_USER0);
3156 return -errno_NFSERR_IO;
3157}
3158
3159static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3160{
3161 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3162 struct kvec *iov = rcvbuf->head;
3163 int hdrlen, len, recvd;
3164 uint32_t *p;
3165 char *kaddr;
3166 int status;
3167
3168 status = decode_op_hdr(xdr, OP_READLINK);
3169 if (status)
3170 return status;
3171
3172 /* Convert length of symlink */
3173 READ_BUF(4);
3174 READ32(len);
3175 if (len >= rcvbuf->page_len || len <= 0) {
3176 dprintk(KERN_WARNING "nfs: server returned giant symlink!\n");
3177 return -ENAMETOOLONG;
3178 }
3179 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3180 recvd = req->rq_rcv_buf.len - hdrlen;
3181 if (recvd < len) {
3182 printk(KERN_WARNING "NFS: server cheating in readlink reply: "
3183 "count %u > recvd %u\n", len, recvd);
3184 return -EIO;
3185 }
3186 xdr_read_pages(xdr, len);
3187 /*
3188 * The XDR encode routine has set things up so that
3189 * the link text will be copied directly into the
3190 * buffer. We just have to do overflow-checking,
3191 * and and null-terminate the text (the VFS expects
3192 * null-termination).
3193 */
3194 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3195 kaddr[len+rcvbuf->page_base] = '\0';
3196 kunmap_atomic(kaddr, KM_USER0);
3197 return 0;
3198}
3199
3200static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3201{
3202 int status;
3203
3204 status = decode_op_hdr(xdr, OP_REMOVE);
3205 if (status)
3206 goto out;
3207 status = decode_change_info(xdr, cinfo);
3208out:
3209 return status;
3210}
3211
3212static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3213 struct nfs4_change_info *new_cinfo)
3214{
3215 int status;
3216
3217 status = decode_op_hdr(xdr, OP_RENAME);
3218 if (status)
3219 goto out;
3220 if ((status = decode_change_info(xdr, old_cinfo)))
3221 goto out;
3222 status = decode_change_info(xdr, new_cinfo);
3223out:
3224 return status;
3225}
3226
3227static int decode_renew(struct xdr_stream *xdr)
3228{
3229 return decode_op_hdr(xdr, OP_RENEW);
3230}
3231
029d105e
BF		 3232static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
3233 size_t *acl_len)
3234{
3235 uint32_t *savep;
3236 uint32_t attrlen,
3237 bitmap[2] = {0};
3238 struct kvec *iov = req->rq_rcv_buf.head;
3239 int status;
3240
3241 *acl_len = 0;
3242 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3243 goto out;
3244 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3245 goto out;
3246 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3247 goto out;
3248
3249 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
3250 return -EIO;
3251 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
3252 int hdrlen, recvd;
3253
3254 /* We ignore &savep and don't do consistency checks on
3255 * the attr length. Let userspace figure it out.... */
3256 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
3257 recvd = req->rq_rcv_buf.len - hdrlen;
3258 if (attrlen > recvd) {
3259 printk(KERN_WARNING "NFS: server cheating in getattr"
3260 " acl reply: attrlen %u > recvd %u\n",
3261 attrlen, recvd);
3262 return -EINVAL;
3263 }
3264 if (attrlen <= *acl_len)
3265 xdr_read_pages(xdr, attrlen);
3266 *acl_len = attrlen;
3267 }
3268
3269out:
3270 return status;
3271}
3272
1da177e4
LT		 3273static int
3274decode_savefh(struct xdr_stream *xdr)
3275{
3276 return decode_op_hdr(xdr, OP_SAVEFH);
3277}
3278
3279static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res)
3280{
3281 uint32_t *p;
3282 uint32_t bmlen;
3283 int status;
3284
3285
3286 status = decode_op_hdr(xdr, OP_SETATTR);
3287 if (status)
3288 return status;
3289 READ_BUF(4);
3290 READ32(bmlen);
3291 READ_BUF(bmlen << 2);
3292 return 0;
3293}
3294
3295static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_client *clp)
3296{
3297 uint32_t *p;
3298 uint32_t opnum;
3299 int32_t nfserr;
3300
3301 READ_BUF(8);
3302 READ32(opnum);
3303 if (opnum != OP_SETCLIENTID) {
3304 printk(KERN_NOTICE
3305 "nfs4_decode_setclientid: Server returned operation"
3306 " %d\n", opnum);
3307 return -EIO;
3308 }
3309 READ32(nfserr);
3310 if (nfserr == NFS_OK) {
3311 READ_BUF(8 + sizeof(clp->cl_confirm.data));
3312 READ64(clp->cl_clientid);
3313 COPYMEM(clp->cl_confirm.data, sizeof(clp->cl_confirm.data));
3314 } else if (nfserr == NFSERR_CLID_INUSE) {
3315 uint32_t len;
3316
3317 /* skip netid string */
3318 READ_BUF(4);
3319 READ32(len);
3320 READ_BUF(len);
3321
3322 /* skip uaddr string */
3323 READ_BUF(4);
3324 READ32(len);
3325 READ_BUF(len);
3326 return -NFSERR_CLID_INUSE;
3327 } else
3328 return -nfs_stat_to_errno(nfserr);
3329
3330 return 0;
3331}
3332
3333static int decode_setclientid_confirm(struct xdr_stream *xdr)
3334{
3335 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
3336}
3337
3338static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
3339{
3340 uint32_t *p;
3341 int status;
3342
3343 status = decode_op_hdr(xdr, OP_WRITE);
3344 if (status)
3345 return status;
3346
3347 READ_BUF(16);
3348 READ32(res->count);
3349 READ32(res->verf->committed);
3350 COPYMEM(res->verf->verifier, 8);
3351 return 0;
3352}
3353
3354static int decode_delegreturn(struct xdr_stream *xdr)
3355{
3356 return decode_op_hdr(xdr, OP_DELEGRETURN);
3357}
3358
3359/*
3360 * Decode OPEN_DOWNGRADE response
3361 */
3362static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3363{
3364 struct xdr_stream xdr;
3365 struct compound_hdr hdr;
3366 int status;
3367
3368 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3369 status = decode_compound_hdr(&xdr, &hdr);
3370 if (status)
3371 goto out;
3372 status = decode_putfh(&xdr);
3373 if (status)
3374 goto out;
3375 status = decode_open_downgrade(&xdr, res);
3376out:
3377 return status;
3378}
3379
3380/*
3381 * END OF "GENERIC" DECODE ROUTINES.
3382 */
3383
3384/*
3385 * Decode ACCESS response
3386 */
3387static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_accessres *res)
3388{
3389 struct xdr_stream xdr;
3390 struct compound_hdr hdr;
3391 int status;
3392
3393 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3394 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3395 goto out;
3396 if ((status = decode_putfh(&xdr)) == 0)
3397 status = decode_access(&xdr, res);
3398out:
3399 return status;
3400}
3401
3402/*
3403 * Decode LOOKUP response
3404 */
3405static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3406{
3407 struct xdr_stream xdr;
3408 struct compound_hdr hdr;
3409 int status;
3410
3411 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3412 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3413 goto out;
3414 if ((status = decode_putfh(&xdr)) != 0)
3415 goto out;
3416 if ((status = decode_lookup(&xdr)) != 0)
3417 goto out;
3418 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3419 goto out;
3420 status = decode_getfattr(&xdr, res->fattr, res->server);
3421out:
3422 return status;
3423}
3424
3425/*
3426 * Decode LOOKUP_ROOT response
3427 */
3428static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3429{
3430 struct xdr_stream xdr;
3431 struct compound_hdr hdr;
3432 int status;
3433
3434 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3435 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3436 goto out;
3437 if ((status = decode_putrootfh(&xdr)) != 0)
3438 goto out;
3439 if ((status = decode_getfh(&xdr, res->fh)) == 0)
3440 status = decode_getfattr(&xdr, res->fattr, res->server);
3441out:
3442 return status;
3443}
3444
3445/*
3446 * Decode REMOVE response
3447 */
3448static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo)
3449{
3450 struct xdr_stream xdr;
3451 struct compound_hdr hdr;
3452 int status;
3453
3454 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3455 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3456 goto out;
3457 if ((status = decode_putfh(&xdr)) == 0)
3458 status = decode_remove(&xdr, cinfo);
3459out:
3460 return status;
3461}
3462
3463/*
3464 * Decode RENAME response
3465 */
3466static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_rename_res *res)
3467{
3468 struct xdr_stream xdr;
3469 struct compound_hdr hdr;
3470 int status;
3471
3472 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3473 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3474 goto out;
3475 if ((status = decode_putfh(&xdr)) != 0)
3476 goto out;
3477 if ((status = decode_savefh(&xdr)) != 0)
3478 goto out;
3479 if ((status = decode_putfh(&xdr)) != 0)
3480 goto out;
3481 status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo);
3482out:
3483 return status;
3484}
3485
3486/*
3487 * Decode LINK response
3488 */
3489static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo)
3490{
3491 struct xdr_stream xdr;
3492 struct compound_hdr hdr;
3493 int status;
3494
3495 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3496 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3497 goto out;
3498 if ((status = decode_putfh(&xdr)) != 0)
3499 goto out;
3500 if ((status = decode_savefh(&xdr)) != 0)
3501 goto out;
3502 if ((status = decode_putfh(&xdr)) != 0)
3503 goto out;
3504 status = decode_link(&xdr, cinfo);
3505out:
3506 return status;
3507}
3508
3509/*
3510 * Decode CREATE response
3511 */
3512static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3513{
3514 struct xdr_stream xdr;
3515 struct compound_hdr hdr;
3516 int status;
3517
3518 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3519 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3520 goto out;
3521 if ((status = decode_putfh(&xdr)) != 0)
3522 goto out;
3523 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
3524 goto out;
3525 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3526 goto out;
3527 status = decode_getfattr(&xdr, res->fattr, res->server);
3528 if (status == NFS4ERR_DELAY)
3529 status = 0;
3530out:
3531 return status;
3532}
3533
3534/*
3535 * Decode SYMLINK response
3536 */
3537static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3538{
3539 return nfs4_xdr_dec_create(rqstp, p, res);
3540}
3541
3542/*
3543 * Decode GETATTR response
3544 */
3545static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_getattr_res *res)
3546{
3547 struct xdr_stream xdr;
3548 struct compound_hdr hdr;
3549 int status;
3550
3551 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3552 status = decode_compound_hdr(&xdr, &hdr);
3553 if (status)
3554 goto out;
3555 status = decode_putfh(&xdr);
3556 if (status)
3557 goto out;
3558 status = decode_getfattr(&xdr, res->fattr, res->server);
3559out:
3560 return status;
3561
3562}
3563
23ec6965
BF		 3564/*
3565 * Encode an SETACL request
3566 */
3567static int
3568nfs4_xdr_enc_setacl(struct rpc_rqst *req, uint32_t *p, struct nfs_setaclargs *args)
3569{
3570 struct xdr_stream xdr;
3571 struct compound_hdr hdr = {
3572 .nops = 2,
3573 };
3574 int status;
3575
3576 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
3577 encode_compound_hdr(&xdr, &hdr);
3578 status = encode_putfh(&xdr, args->fh);
3579 if (status)
3580 goto out;
3581 status = encode_setacl(&xdr, args);
3582out:
3583 return status;
3584}
3585/*
3586 * Decode SETACL response
3587 */
3588static int
3589nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, uint32_t *p, void *res)
3590{
3591 struct xdr_stream xdr;
3592 struct compound_hdr hdr;
3593 int status;
3594
3595 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3596 status = decode_compound_hdr(&xdr, &hdr);
3597 if (status)
3598 goto out;
3599 status = decode_putfh(&xdr);
3600 if (status)
3601 goto out;
3602 status = decode_setattr(&xdr, res);
3603out:
3604 return status;
3605}
1da177e4 3606
029d105e
BF		 3607/*
3608 * Decode GETACL response
3609 */
3610static int
3611nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, uint32_t *p, size_t *acl_len)
3612{
3613 struct xdr_stream xdr;
3614 struct compound_hdr hdr;
3615 int status;
3616
3617 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3618 status = decode_compound_hdr(&xdr, &hdr);
3619 if (status)
3620 goto out;
3621 status = decode_putfh(&xdr);
3622 if (status)
3623 goto out;
3624 status = decode_getacl(&xdr, rqstp, acl_len);
3625
3626out:
3627 return status;
3628}
3629
1da177e4
LT		 3630/*
3631 * Decode CLOSE response
3632 */
3633static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3634{
3635 struct xdr_stream xdr;
3636 struct compound_hdr hdr;
3637 int status;
3638
3639 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3640 status = decode_compound_hdr(&xdr, &hdr);
3641 if (status)
3642 goto out;
3643 status = decode_putfh(&xdr);
3644 if (status)
3645 goto out;
3646 status = decode_close(&xdr, res);
3647out:
3648 return status;
3649}
3650
3651/*
3652 * Decode OPEN response
3653 */
3654static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3655{
3656 struct xdr_stream xdr;
3657 struct compound_hdr hdr;
3658 int status;
3659
3660 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3661 status = decode_compound_hdr(&xdr, &hdr);
3662 if (status)
3663 goto out;
3664 status = decode_putfh(&xdr);
3665 if (status)
3666 goto out;
3667 status = decode_open(&xdr, res);
3668 if (status)
3669 goto out;
3670 status = decode_getfh(&xdr, &res->fh);
3671 if (status)
3672 goto out;
3673 status = decode_getfattr(&xdr, res->f_attr, res->server);
3674 if (status == NFS4ERR_DELAY)
3675 status = 0;
3676out:
3677 return status;
3678}
3679
3680/*
3681 * Decode OPEN_CONFIRM response
3682 */
3683static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_open_confirmres *res)
3684{
3685 struct xdr_stream xdr;
3686 struct compound_hdr hdr;
3687 int status;
3688
3689 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3690 status = decode_compound_hdr(&xdr, &hdr);
3691 if (status)
3692 goto out;
3693 status = decode_putfh(&xdr);
3694 if (status)
3695 goto out;
3696 status = decode_open_confirm(&xdr, res);
3697out:
3698 return status;
3699}
3700
3701/*
3702 * Decode OPEN response
3703 */
3704static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3705{
3706 struct xdr_stream xdr;
3707 struct compound_hdr hdr;
3708 int status;
3709
3710 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3711 status = decode_compound_hdr(&xdr, &hdr);
3712 if (status)
3713 goto out;
3714 status = decode_putfh(&xdr);
3715 if (status)
3716 goto out;
3717 status = decode_open(&xdr, res);
3718out:
3719 return status;
3720}
3721
3722/*
3723 * Decode SETATTR response
3724 */
3725static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_setattrres *res)
3726{
3727 struct xdr_stream xdr;
3728 struct compound_hdr hdr;
3729 int status;
3730
3731 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3732 status = decode_compound_hdr(&xdr, &hdr);
3733 if (status)
3734 goto out;
3735 status = decode_putfh(&xdr);
3736 if (status)
3737 goto out;
3738 status = decode_setattr(&xdr, res);
3739 if (status)
3740 goto out;
3741 status = decode_getfattr(&xdr, res->fattr, res->server);
3742 if (status == NFS4ERR_DELAY)
3743 status = 0;
3744out:
3745 return status;
3746}
3747
3748/*
3749 * Decode LOCK response
3750 */
3751static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3752{
3753 struct xdr_stream xdr;
3754 struct compound_hdr hdr;
3755 int status;
3756
3757 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3758 status = decode_compound_hdr(&xdr, &hdr);
3759 if (status)
3760 goto out;
3761 status = decode_putfh(&xdr);
3762 if (status)
3763 goto out;
3764 status = decode_lock(&xdr, res);
3765out:
3766 return status;
3767}
3768
3769/*
3770 * Decode LOCKT response
3771 */
3772static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3773{
3774 struct xdr_stream xdr;
3775 struct compound_hdr hdr;
3776 int status;
3777
3778 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3779 status = decode_compound_hdr(&xdr, &hdr);
3780 if (status)
3781 goto out;
3782 status = decode_putfh(&xdr);
3783 if (status)
3784 goto out;
3785 status = decode_lockt(&xdr, res);
3786out:
3787 return status;
3788}
3789
3790/*
3791 * Decode LOCKU response
3792 */
3793static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3794{
3795 struct xdr_stream xdr;
3796 struct compound_hdr hdr;
3797 int status;
3798
3799 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3800 status = decode_compound_hdr(&xdr, &hdr);
3801 if (status)
3802 goto out;
3803 status = decode_putfh(&xdr);
3804 if (status)
3805 goto out;
3806 status = decode_locku(&xdr, res);
3807out:
3808 return status;
3809}
3810
3811/*
3812 * Decode READLINK response
3813 */
3814static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, uint32_t *p, void *res)
3815{
3816 struct xdr_stream xdr;
3817 struct compound_hdr hdr;
3818 int status;
3819
3820 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3821 status = decode_compound_hdr(&xdr, &hdr);
3822 if (status)
3823 goto out;
3824 status = decode_putfh(&xdr);
3825 if (status)
3826 goto out;
3827 status = decode_readlink(&xdr, rqstp);
3828out:
3829 return status;
3830}
3831
3832/*
3833 * Decode READDIR response
3834 */
3835static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_readdir_res *res)
3836{
3837 struct xdr_stream xdr;
3838 struct compound_hdr hdr;
3839 int status;
3840
3841 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3842 status = decode_compound_hdr(&xdr, &hdr);
3843 if (status)
3844 goto out;
3845 status = decode_putfh(&xdr);
3846 if (status)
3847 goto out;
3848 status = decode_readdir(&xdr, rqstp, res);
3849out:
3850 return status;
3851}
3852
3853/*
3854 * Decode Read response
3855 */
3856static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_readres *res)
3857{
3858 struct xdr_stream xdr;
3859 struct compound_hdr hdr;
3860 int status;
3861
3862 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3863 status = decode_compound_hdr(&xdr, &hdr);
3864 if (status)
3865 goto out;
3866 status = decode_putfh(&xdr);
3867 if (status)
3868 goto out;
3869 status = decode_read(&xdr, rqstp, res);
3870 if (!status)
3871 status = res->count;
3872out:
3873 return status;
3874}
3875
3876/*
3877 * Decode WRITE response
3878 */
3879static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
3880{
3881 struct xdr_stream xdr;
3882 struct compound_hdr hdr;
3883 int status;
3884
3885 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3886 status = decode_compound_hdr(&xdr, &hdr);
3887 if (status)
3888 goto out;
3889 status = decode_putfh(&xdr);
3890 if (status)
3891 goto out;
3892 status = decode_write(&xdr, res);
3893 if (!status)
3894 status = res->count;
3895out:
3896 return status;
3897}
3898
3899/*
3900 * Decode COMMIT response
3901 */
3902static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
3903{
3904 struct xdr_stream xdr;
3905 struct compound_hdr hdr;
3906 int status;
3907
3908 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3909 status = decode_compound_hdr(&xdr, &hdr);
3910 if (status)
3911 goto out;
3912 status = decode_putfh(&xdr);
3913 if (status)
3914 goto out;
3915 status = decode_commit(&xdr, res);
3916out:
3917 return status;
3918}
3919
3920/*
3921 * FSINFO request
3922 */
3923static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
3924{
3925 struct xdr_stream xdr;
3926 struct compound_hdr hdr;
3927 int status;
3928
3929 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3930 status = decode_compound_hdr(&xdr, &hdr);
3931 if (!status)
3932 status = decode_putfh(&xdr);
3933 if (!status)
3934 status = decode_fsinfo(&xdr, fsinfo);
3935 if (!status)
3936 status = -nfs_stat_to_errno(hdr.status);
3937 return status;
3938}
3939
3940/*
3941 * PATHCONF request
3942 */
3943static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, uint32_t *p, struct nfs_pathconf *pathconf)
3944{
3945 struct xdr_stream xdr;
3946 struct compound_hdr hdr;
3947 int status;
3948
3949 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3950 status = decode_compound_hdr(&xdr, &hdr);
3951 if (!status)
3952 status = decode_putfh(&xdr);
3953 if (!status)
3954 status = decode_pathconf(&xdr, pathconf);
3955 return status;
3956}
3957
3958/*
3959 * STATFS request
3960 */
3961static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, uint32_t *p, struct nfs_fsstat *fsstat)
3962{
3963 struct xdr_stream xdr;
3964 struct compound_hdr hdr;
3965 int status;
3966
3967 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3968 status = decode_compound_hdr(&xdr, &hdr);
3969 if (!status)
3970 status = decode_putfh(&xdr);
3971 if (!status)
3972 status = decode_statfs(&xdr, fsstat);
3973 return status;
3974}
3975
3976/*
3977 * GETATTR_BITMAP request
3978 */
3979static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, uint32_t *p, struct nfs4_server_caps_res *res)
3980{
3981 struct xdr_stream xdr;
3982 struct compound_hdr hdr;
3983 int status;
3984
3985 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3986 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3987 goto out;
3988 if ((status = decode_putfh(&xdr)) != 0)
3989 goto out;
3990 status = decode_server_caps(&xdr, res);
3991out:
3992 return status;
3993}
3994
3995/*
3996 * Decode RENEW response
3997 */
3998static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
3999{
4000 struct xdr_stream xdr;
4001 struct compound_hdr hdr;
4002 int status;
4003
4004 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4005 status = decode_compound_hdr(&xdr, &hdr);
4006 if (!status)
4007 status = decode_renew(&xdr);
4008 return status;
4009}
4010
4011/*
4012 * a SETCLIENTID request
4013 */
4014static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, uint32_t *p,
4015 struct nfs4_client *clp)
4016{
4017 struct xdr_stream xdr;
4018 struct compound_hdr hdr;
4019 int status;
4020
4021 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4022 status = decode_compound_hdr(&xdr, &hdr);
4023 if (!status)
4024 status = decode_setclientid(&xdr, clp);
4025 if (!status)
4026 status = -nfs_stat_to_errno(hdr.status);
4027 return status;
4028}
4029
4030/*
4031 * a SETCLIENTID_CONFIRM request
4032 */
4033static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
4034{
4035 struct xdr_stream xdr;
4036 struct compound_hdr hdr;
4037 int status;
4038
4039 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4040 status = decode_compound_hdr(&xdr, &hdr);
4041 if (!status)
4042 status = decode_setclientid_confirm(&xdr);
4043 if (!status)
4044 status = decode_putrootfh(&xdr);
4045 if (!status)
4046 status = decode_fsinfo(&xdr, fsinfo);
4047 if (!status)
4048 status = -nfs_stat_to_errno(hdr.status);
4049 return status;
4050}
4051
4052/*
4053 * DELEGRETURN request
4054 */
4055static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
4056{
4057 struct xdr_stream xdr;
4058 struct compound_hdr hdr;
4059 int status;
4060
4061 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4062 status = decode_compound_hdr(&xdr, &hdr);
4063 if (status == 0) {
4064 status = decode_putfh(&xdr);
4065 if (status == 0)
4066 status = decode_delegreturn(&xdr);
4067 }
4068 return status;
4069}
4070
4071uint32_t *nfs4_decode_dirent(uint32_t *p, struct nfs_entry *entry, int plus)
4072{
4073 uint32_t bitmap[2] = {0};
4074 uint32_t len;
4075
4076 if (!*p++) {
4077 if (!*p)
4078 return ERR_PTR(-EAGAIN);
4079 entry->eof = 1;
4080 return ERR_PTR(-EBADCOOKIE);
4081 }
4082
4083 entry->prev_cookie = entry->cookie;
4084 p = xdr_decode_hyper(p, &entry->cookie);
4085 entry->len = ntohl(*p++);
4086 entry->name = (const char *) p;
4087 p += XDR_QUADLEN(entry->len);
4088
4089 /*
4090 * In case the server doesn't return an inode number,
4091 * we fake one here. (We don't use inode number 0,
4092 * since glibc seems to choke on it...)
4093 */
4094 entry->ino = 1;
4095
4096 len = ntohl(*p++); /* bitmap length */
4097 if (len-- > 0) {
4098 bitmap[0] = ntohl(*p++);
4099 if (len-- > 0) {
4100 bitmap[1] = ntohl(*p++);
4101 p += len;
4102 }
4103 }
4104 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
4105 if (len > 0) {
97d312d0
MN		 4106 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
4107 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
4108 /* Ignore the return value of rdattr_error for now */
4109 p++;
4110 len--;
4111 }
1da177e4
LT		 4112 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
4113 xdr_decode_hyper(p, &entry->ino);
4114 else if (bitmap[0] == FATTR4_WORD0_FILEID)
4115 xdr_decode_hyper(p, &entry->ino);
4116 p += len;
4117 }
4118
4119 entry->eof = !p[0] && p[1];
4120 return p;
4121}
4122
4123/*
4124 * We need to translate between nfs status return values and
4125 * the local errno values which may not be the same.
4126 */
4127static struct {
4128 int stat;
4129 int errno;
4130} nfs_errtbl[] = {
4131 { NFS4_OK, 0 },
4132 { NFS4ERR_PERM, EPERM },
4133 { NFS4ERR_NOENT, ENOENT },
4134 { NFS4ERR_IO, errno_NFSERR_IO },
4135 { NFS4ERR_NXIO, ENXIO },
4136 { NFS4ERR_ACCESS, EACCES },
4137 { NFS4ERR_EXIST, EEXIST },
4138 { NFS4ERR_XDEV, EXDEV },
4139 { NFS4ERR_NOTDIR, ENOTDIR },
4140 { NFS4ERR_ISDIR, EISDIR },
4141 { NFS4ERR_INVAL, EINVAL },
4142 { NFS4ERR_FBIG, EFBIG },
4143 { NFS4ERR_NOSPC, ENOSPC },
4144 { NFS4ERR_ROFS, EROFS },
4145 { NFS4ERR_MLINK, EMLINK },
4146 { NFS4ERR_NAMETOOLONG, ENAMETOOLONG },
4147 { NFS4ERR_NOTEMPTY, ENOTEMPTY },
4148 { NFS4ERR_DQUOT, EDQUOT },
4149 { NFS4ERR_STALE, ESTALE },
4150 { NFS4ERR_BADHANDLE, EBADHANDLE },
6ebf3656
MN		 4151 { NFS4ERR_BADOWNER, EINVAL },
4152 { NFS4ERR_BADNAME, EINVAL },
1da177e4
LT		 4153 { NFS4ERR_BAD_COOKIE, EBADCOOKIE },
4154 { NFS4ERR_NOTSUPP, ENOTSUPP },
4155 { NFS4ERR_TOOSMALL, ETOOSMALL },
4156 { NFS4ERR_SERVERFAULT, ESERVERFAULT },
4157 { NFS4ERR_BADTYPE, EBADTYPE },
4158 { NFS4ERR_LOCKED, EAGAIN },
4159 { NFS4ERR_RESOURCE, EREMOTEIO },
4160 { NFS4ERR_SYMLINK, ELOOP },
4161 { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP },
4162 { NFS4ERR_DEADLOCK, EDEADLK },
4163 { NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs
4164 * to be handled by a
4165 * middle-layer.
4166 */
4167 { -1, EIO }
4168};
4169
4170/*
4171 * Convert an NFS error code to a local one.
4172 * This one is used jointly by NFSv2 and NFSv3.
4173 */
4174static int
4175nfs_stat_to_errno(int stat)
4176{
4177 int i;
4178 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
4179 if (nfs_errtbl[i].stat == stat)
4180 return nfs_errtbl[i].errno;
4181 }
4182 if (stat <= 10000 || stat > 10100) {
4183 /* The server is looney tunes. */
4184 return ESERVERFAULT;
4185 }
4186 /* If we cannot translate the error, the recovery routines should
4187 * handle it.
4188 * Note: remaining NFSv4 error codes have values > 10000, so should
4189 * not conflict with native Linux error codes.
4190 */
4191 return stat;
4192}
4193
4194#ifndef MAX
4195# define MAX(a, b) (((a) > (b))? (a) : (b))
4196#endif
4197
4198#define PROC(proc, argtype, restype) \
4199[NFSPROC4_CLNT_##proc] = { \
4200 .p_proc = NFSPROC4_COMPOUND, \
4201 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
4202 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
4203 .p_bufsiz = MAX(NFS4_##argtype##_sz,NFS4_##restype##_sz) << 2, \
4204 }
4205
4206struct rpc_procinfo nfs4_procedures[] = {
4207 PROC(READ, enc_read, dec_read),
4208 PROC(WRITE, enc_write, dec_write),
4209 PROC(COMMIT, enc_commit, dec_commit),
4210 PROC(OPEN, enc_open, dec_open),
4211 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
4212 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
4213 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
4214 PROC(CLOSE, enc_close, dec_close),
4215 PROC(SETATTR, enc_setattr, dec_setattr),
4216 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
4217 PROC(RENEW, enc_renew, dec_renew),
4218 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
4219 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
4220 PROC(LOCK, enc_lock, dec_lock),
4221 PROC(LOCKT, enc_lockt, dec_lockt),
4222 PROC(LOCKU, enc_locku, dec_locku),
4223 PROC(ACCESS, enc_access, dec_access),
4224 PROC(GETATTR, enc_getattr, dec_getattr),
4225 PROC(LOOKUP, enc_lookup, dec_lookup),
4226 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
4227 PROC(REMOVE, enc_remove, dec_remove),
4228 PROC(RENAME, enc_rename, dec_rename),
4229 PROC(LINK, enc_link, dec_link),
4230 PROC(SYMLINK, enc_symlink, dec_symlink),
4231 PROC(CREATE, enc_create, dec_create),
4232 PROC(PATHCONF, enc_pathconf, dec_pathconf),
4233 PROC(STATFS, enc_statfs, dec_statfs),
4234 PROC(READLINK, enc_readlink, dec_readlink),
4235 PROC(READDIR, enc_readdir, dec_readdir),
4236 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
4237 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
029d105e 4238 PROC(GETACL, enc_getacl, dec_getacl),
23ec6965 4239 PROC(SETACL, enc_setacl, dec_setacl),
1da177e4
LT		 4240};
4241
4242struct rpc_version nfs_version4 = {
4243 .number = 4,
4244 .nrprocs = sizeof(nfs4_procedures)/sizeof(nfs4_procedures[0]),
4245 .procs = nfs4_procedures
4246};
4247
4248/*
4249 * Local variables:
4250 * c-basic-offset: 8
4251 * End:
4252 */
Linux 6.x block layer and io_uring tree(s)