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NFS: nfs_lookup doesn't need to revalidate the parent directory's inode
[deliverable/linux.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){
1da177e4 732 RESERVE_SPACE(40);
06735b34
TM		 733 WRITE32(opargs->open_seqid->sequence->counter);
734 WRITEMEM(opargs->open_stateid->data, sizeof(opargs->open_stateid->data));
735 WRITE32(opargs->lock_seqid->sequence->counter);
736 WRITE64(opargs->lock_owner.clientid);
1da177e4 737 WRITE32(4);
06735b34 738 WRITE32(opargs->lock_owner.id);
1da177e4
LT		 739 }
740 else {
1da177e4 741 RESERVE_SPACE(20);
06735b34
TM		 742 WRITEMEM(opargs->lock_stateid->data, sizeof(opargs->lock_stateid->data));
743 WRITE32(opargs->lock_seqid->sequence->counter);
1da177e4
LT		 744 }
745
746 return 0;
747}
748
749static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
750{
751 uint32_t *p;
752 struct nfs_lowner *opargs = arg->u.lockt;
753
754 RESERVE_SPACE(40);
755 WRITE32(OP_LOCKT);
756 WRITE32(arg->type);
757 WRITE64(arg->offset);
758 WRITE64(arg->length);
759 WRITE64(opargs->clientid);
760 WRITE32(4);
761 WRITE32(opargs->id);
762
763 return 0;
764}
765
766static int encode_locku(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
767{
768 uint32_t *p;
769 struct nfs_locku_opargs *opargs = arg->u.locku;
770
771 RESERVE_SPACE(44);
772 WRITE32(OP_LOCKU);
773 WRITE32(arg->type);
cee54fc9 774 WRITE32(opargs->seqid->sequence->counter);
faf5f49c 775 WRITEMEM(opargs->stateid->data, sizeof(opargs->stateid->data));
1da177e4
LT		 776 WRITE64(arg->offset);
777 WRITE64(arg->length);
778
779 return 0;
780}
781
782static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name)
783{
784 int len = name->len;
785 uint32_t *p;
786
787 RESERVE_SPACE(8 + len);
788 WRITE32(OP_LOOKUP);
789 WRITE32(len);
790 WRITEMEM(name->name, len);
791
792 return 0;
793}
794
795static void encode_share_access(struct xdr_stream *xdr, int open_flags)
796{
797 uint32_t *p;
798
799 RESERVE_SPACE(8);
800 switch (open_flags & (FMODE_READ|FMODE_WRITE)) {
801 case FMODE_READ:
802 WRITE32(NFS4_SHARE_ACCESS_READ);
803 break;
804 case FMODE_WRITE:
805 WRITE32(NFS4_SHARE_ACCESS_WRITE);
806 break;
807 case FMODE_READ|FMODE_WRITE:
808 WRITE32(NFS4_SHARE_ACCESS_BOTH);
809 break;
810 default:
811 BUG();
812 }
813 WRITE32(0); /* for linux, share_deny = 0 always */
814}
815
816static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
817{
818 uint32_t *p;
819 /*
820 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
821 * owner 4 = 32
822 */
823 RESERVE_SPACE(8);
824 WRITE32(OP_OPEN);
cee54fc9 825 WRITE32(arg->seqid->sequence->counter);
1da177e4
LT		 826 encode_share_access(xdr, arg->open_flags);
827 RESERVE_SPACE(16);
828 WRITE64(arg->clientid);
829 WRITE32(4);
830 WRITE32(arg->id);
831}
832
833static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
834{
835 uint32_t *p;
836
837 RESERVE_SPACE(4);
838 switch(arg->open_flags & O_EXCL) {
839 case 0:
840 WRITE32(NFS4_CREATE_UNCHECKED);
841 encode_attrs(xdr, arg->u.attrs, arg->server);
842 break;
843 default:
844 WRITE32(NFS4_CREATE_EXCLUSIVE);
845 encode_nfs4_verifier(xdr, &arg->u.verifier);
846 }
847}
848
849static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
850{
851 uint32_t *p;
852
853 RESERVE_SPACE(4);
854 switch (arg->open_flags & O_CREAT) {
855 case 0:
856 WRITE32(NFS4_OPEN_NOCREATE);
857 break;
858 default:
859 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
860 WRITE32(NFS4_OPEN_CREATE);
861 encode_createmode(xdr, arg);
862 }
863}
864
865static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type)
866{
867 uint32_t *p;
868
869 RESERVE_SPACE(4);
870 switch (delegation_type) {
871 case 0:
872 WRITE32(NFS4_OPEN_DELEGATE_NONE);
873 break;
874 case FMODE_READ:
875 WRITE32(NFS4_OPEN_DELEGATE_READ);
876 break;
877 case FMODE_WRITE|FMODE_READ:
878 WRITE32(NFS4_OPEN_DELEGATE_WRITE);
879 break;
880 default:
881 BUG();
882 }
883}
884
885static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
886{
887 uint32_t *p;
888
889 RESERVE_SPACE(4);
890 WRITE32(NFS4_OPEN_CLAIM_NULL);
891 encode_string(xdr, name->len, name->name);
892}
893
894static inline void encode_claim_previous(struct xdr_stream *xdr, int type)
895{
896 uint32_t *p;
897
898 RESERVE_SPACE(4);
899 WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
900 encode_delegation_type(xdr, type);
901}
902
903static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
904{
905 uint32_t *p;
906
907 RESERVE_SPACE(4+sizeof(stateid->data));
908 WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
909 WRITEMEM(stateid->data, sizeof(stateid->data));
910 encode_string(xdr, name->len, name->name);
911}
912
913static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg)
914{
915 encode_openhdr(xdr, arg);
916 encode_opentype(xdr, arg);
917 switch (arg->claim) {
918 case NFS4_OPEN_CLAIM_NULL:
919 encode_claim_null(xdr, arg->name);
920 break;
921 case NFS4_OPEN_CLAIM_PREVIOUS:
922 encode_claim_previous(xdr, arg->u.delegation_type);
923 break;
924 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
925 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
926 break;
927 default:
928 BUG();
929 }
930 return 0;
931}
932
933static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg)
934{
935 uint32_t *p;
936
937 RESERVE_SPACE(8+sizeof(arg->stateid.data));
938 WRITE32(OP_OPEN_CONFIRM);
939 WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
cee54fc9 940 WRITE32(arg->seqid->sequence->counter);
1da177e4
LT		 941
942 return 0;
943}
944
945static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
946{
947 uint32_t *p;
948
9512135d 949 RESERVE_SPACE(8+sizeof(arg->stateid->data));
1da177e4 950 WRITE32(OP_OPEN_DOWNGRADE);
9512135d 951 WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
cee54fc9 952 WRITE32(arg->seqid->sequence->counter);
1da177e4
LT		 953 encode_share_access(xdr, arg->open_flags);
954 return 0;
955}
956
957static int
958encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh)
959{
960 int len = fh->size;
961 uint32_t *p;
962
963 RESERVE_SPACE(8 + len);
964 WRITE32(OP_PUTFH);
965 WRITE32(len);
966 WRITEMEM(fh->data, len);
967
968 return 0;
969}
970
971static int encode_putrootfh(struct xdr_stream *xdr)
972{
973 uint32_t *p;
974
975 RESERVE_SPACE(4);
976 WRITE32(OP_PUTROOTFH);
977
978 return 0;
979}
980
981static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
982{
1da177e4
LT		 983 nfs4_stateid stateid;
984 uint32_t *p;
985
986 RESERVE_SPACE(16);
987 if (ctx->state != NULL) {
988 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
989 WRITEMEM(stateid.data, sizeof(stateid.data));
990 } else
991 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
992}
993
994static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
995{
996 uint32_t *p;
997
998 RESERVE_SPACE(4);
999 WRITE32(OP_READ);
1000
1001 encode_stateid(xdr, args->context);
1002
1003 RESERVE_SPACE(12);
1004 WRITE64(args->offset);
1005 WRITE32(args->count);
1006
1007 return 0;
1008}
1009
1010static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req)
1011{
1012 struct rpc_auth *auth = req->rq_task->tk_auth;
97d312d0
MN		 1013 uint32_t attrs[2] = {
1014 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1015 FATTR4_WORD1_MOUNTED_ON_FILEID,
1016 };
1da177e4
LT		 1017 int replen;
1018 uint32_t *p;
1019
1020 RESERVE_SPACE(32+sizeof(nfs4_verifier));
1021 WRITE32(OP_READDIR);
1022 WRITE64(readdir->cookie);
1023 WRITEMEM(readdir->verifier.data, sizeof(readdir->verifier.data));
1024 WRITE32(readdir->count >> 1); /* We're not doing readdirplus */
1025 WRITE32(readdir->count);
1026 WRITE32(2);
97d312d0
MN		 1027 /* Switch to mounted_on_fileid if the server supports it */
1028 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1029 attrs[0] &= ~FATTR4_WORD0_FILEID;
1030 else
1031 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1032 WRITE32(attrs[0] & readdir->bitmask[0]);
1033 WRITE32(attrs[1] & readdir->bitmask[1]);
eadf4598
TM		 1034 dprintk("%s: cookie = %Lu, verifier = 0x%x%x, bitmap = 0x%x%x\n",
1035 __FUNCTION__,
1036 (unsigned long long)readdir->cookie,
1037 ((u32 *)readdir->verifier.data)[0],
1038 ((u32 *)readdir->verifier.data)[1],
1039 attrs[0] & readdir->bitmask[0],
1040 attrs[1] & readdir->bitmask[1]);
1da177e4
LT		 1041
1042 /* set up reply kvec
1043 * toplevel_status + taglen + rescount + OP_PUTFH + status
1044 * + OP_READDIR + status + verifer(2) = 9
1045 */
1046 replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2;
1047 xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages,
1048 readdir->pgbase, readdir->count);
eadf4598
TM		 1049 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
1050 __FUNCTION__, replen, readdir->pages,
1051 readdir->pgbase, readdir->count);
1da177e4
LT		 1052
1053 return 0;
1054}
1055
1056static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req)
1057{
1058 struct rpc_auth *auth = req->rq_task->tk_auth;
1059 unsigned int replen;
1060 uint32_t *p;
1061
1062 RESERVE_SPACE(4);
1063 WRITE32(OP_READLINK);
1064
1065 /* set up reply kvec
1066 * toplevel_status + taglen + rescount + OP_PUTFH + status
1067 * + OP_READLINK + status + string length = 8
1068 */
1069 replen = (RPC_REPHDRSIZE + auth->au_rslack + 8) << 2;
1070 xdr_inline_pages(&req->rq_rcv_buf, replen, readlink->pages,
1071 readlink->pgbase, readlink->pglen);
1072
1073 return 0;
1074}
1075
1076static int encode_remove(struct xdr_stream *xdr, const struct qstr *name)
1077{
1078 uint32_t *p;
1079
1080 RESERVE_SPACE(8 + name->len);
1081 WRITE32(OP_REMOVE);
1082 WRITE32(name->len);
1083 WRITEMEM(name->name, name->len);
1084
1085 return 0;
1086}
1087
1088static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname)
1089{
1090 uint32_t *p;
1091
1092 RESERVE_SPACE(8 + oldname->len);
1093 WRITE32(OP_RENAME);
1094 WRITE32(oldname->len);
1095 WRITEMEM(oldname->name, oldname->len);
1096
1097 RESERVE_SPACE(4 + newname->len);
1098 WRITE32(newname->len);
1099 WRITEMEM(newname->name, newname->len);
1100
1101 return 0;
1102}
1103
1104static int encode_renew(struct xdr_stream *xdr, const struct nfs4_client *client_stateid)
1105{
1106 uint32_t *p;
1107
1108 RESERVE_SPACE(12);
1109 WRITE32(OP_RENEW);
1110 WRITE64(client_stateid->cl_clientid);
1111
1112 return 0;
1113}
1114
23ec6965
BF		 1115static int
1116encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg)
1117{
1118 uint32_t *p;
1119
1120 RESERVE_SPACE(4+sizeof(zero_stateid.data));
1121 WRITE32(OP_SETATTR);
1122 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
1123 RESERVE_SPACE(2*4);
1124 WRITE32(1);
1125 WRITE32(FATTR4_WORD0_ACL);
1126 if (arg->acl_len % 4)
1127 return -EINVAL;
1128 RESERVE_SPACE(4);
1129 WRITE32(arg->acl_len);
1130 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1131 return 0;
1132}
1133
1da177e4
LT		 1134static int
1135encode_savefh(struct xdr_stream *xdr)
1136{
1137 uint32_t *p;
1138
1139 RESERVE_SPACE(4);
1140 WRITE32(OP_SAVEFH);
1141
1142 return 0;
1143}
1144
1145static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server)
1146{
1147 int status;
1148 uint32_t *p;
1149
1150 RESERVE_SPACE(4+sizeof(arg->stateid.data));
1151 WRITE32(OP_SETATTR);
1152 WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
1153
1154 if ((status = encode_attrs(xdr, arg->iap, server)))
1155 return status;
1156
1157 return 0;
1158}
1159
1160static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid)
1161{
1162 uint32_t *p;
1163
1164 RESERVE_SPACE(4 + sizeof(setclientid->sc_verifier->data));
1165 WRITE32(OP_SETCLIENTID);
1166 WRITEMEM(setclientid->sc_verifier->data, sizeof(setclientid->sc_verifier->data));
1167
1168 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1169 RESERVE_SPACE(4);
1170 WRITE32(setclientid->sc_prog);
1171 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1172 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1173 RESERVE_SPACE(4);
1174 WRITE32(setclientid->sc_cb_ident);
1175
1176 return 0;
1177}
1178
1179static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_client *client_state)
1180{
1181 uint32_t *p;
1182
1183 RESERVE_SPACE(12 + sizeof(client_state->cl_confirm.data));
1184 WRITE32(OP_SETCLIENTID_CONFIRM);
1185 WRITE64(client_state->cl_clientid);
1186 WRITEMEM(client_state->cl_confirm.data, sizeof(client_state->cl_confirm.data));
1187
1188 return 0;
1189}
1190
1191static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args)
1192{
1193 uint32_t *p;
1194
1195 RESERVE_SPACE(4);
1196 WRITE32(OP_WRITE);
1197
1198 encode_stateid(xdr, args->context);
1199
1200 RESERVE_SPACE(16);
1201 WRITE64(args->offset);
1202 WRITE32(args->stable);
1203 WRITE32(args->count);
1204
1205 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1206
1207 return 0;
1208}
1209
1210static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1211{
1212 uint32_t *p;
1213
1214 RESERVE_SPACE(20);
1215
1216 WRITE32(OP_DELEGRETURN);
1217 WRITEMEM(stateid->data, sizeof(stateid->data));
1218 return 0;
1219
1220}
1221/*
1222 * END OF "GENERIC" ENCODE ROUTINES.
1223 */
1224
1225/*
1226 * Encode an ACCESS request
1227 */
1228static int nfs4_xdr_enc_access(struct rpc_rqst *req, uint32_t *p, const struct nfs4_accessargs *args)
1229{
1230 struct xdr_stream xdr;
1231 struct compound_hdr hdr = {
1232 .nops = 2,
1233 };
1234 int status;
1235
1236 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1237 encode_compound_hdr(&xdr, &hdr);
1238 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1239 status = encode_access(&xdr, args->access);
1240 return status;
1241}
1242
1243/*
1244 * Encode LOOKUP request
1245 */
1246static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_arg *args)
1247{
1248 struct xdr_stream xdr;
1249 struct compound_hdr hdr = {
1250 .nops = 4,
1251 };
1252 int status;
1253
1254 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1255 encode_compound_hdr(&xdr, &hdr);
1256 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1257 goto out;
1258 if ((status = encode_lookup(&xdr, args->name)) != 0)
1259 goto out;
1260 if ((status = encode_getfh(&xdr)) != 0)
1261 goto out;
1262 status = encode_getfattr(&xdr, args->bitmask);
1263out:
1264 return status;
1265}
1266
1267/*
1268 * Encode LOOKUP_ROOT request
1269 */
1270static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_root_arg *args)
1271{
1272 struct xdr_stream xdr;
1273 struct compound_hdr hdr = {
1274 .nops = 3,
1275 };
1276 int status;
1277
1278 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1279 encode_compound_hdr(&xdr, &hdr);
1280 if ((status = encode_putrootfh(&xdr)) != 0)
1281 goto out;
1282 if ((status = encode_getfh(&xdr)) == 0)
1283 status = encode_getfattr(&xdr, args->bitmask);
1284out:
1285 return status;
1286}
1287
1288/*
1289 * Encode REMOVE request
1290 */
1291static int nfs4_xdr_enc_remove(struct rpc_rqst *req, uint32_t *p, const struct nfs4_remove_arg *args)
1292{
1293 struct xdr_stream xdr;
1294 struct compound_hdr hdr = {
1295 .nops = 2,
1296 };
1297 int status;
1298
1299 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1300 encode_compound_hdr(&xdr, &hdr);
1301 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1302 status = encode_remove(&xdr, args->name);
1303 return status;
1304}
1305
1306/*
1307 * Encode RENAME request
1308 */
1309static int nfs4_xdr_enc_rename(struct rpc_rqst *req, uint32_t *p, const struct nfs4_rename_arg *args)
1310{
1311 struct xdr_stream xdr;
1312 struct compound_hdr hdr = {
1313 .nops = 4,
1314 };
1315 int status;
1316
1317 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1318 encode_compound_hdr(&xdr, &hdr);
1319 if ((status = encode_putfh(&xdr, args->old_dir)) != 0)
1320 goto out;
1321 if ((status = encode_savefh(&xdr)) != 0)
1322 goto out;
1323 if ((status = encode_putfh(&xdr, args->new_dir)) != 0)
1324 goto out;
1325 status = encode_rename(&xdr, args->old_name, args->new_name);
1326out:
1327 return status;
1328}
1329
1330/*
1331 * Encode LINK request
1332 */
1333static int nfs4_xdr_enc_link(struct rpc_rqst *req, uint32_t *p, const struct nfs4_link_arg *args)
1334{
1335 struct xdr_stream xdr;
1336 struct compound_hdr hdr = {
1337 .nops = 4,
1338 };
1339 int status;
1340
1341 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1342 encode_compound_hdr(&xdr, &hdr);
1343 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1344 goto out;
1345 if ((status = encode_savefh(&xdr)) != 0)
1346 goto out;
1347 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1348 goto out;
1349 status = encode_link(&xdr, args->name);
1350out:
1351 return status;
1352}
1353
1354/*
1355 * Encode CREATE request
1356 */
1357static int nfs4_xdr_enc_create(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1358{
1359 struct xdr_stream xdr;
1360 struct compound_hdr hdr = {
1361 .nops = 4,
1362 };
1363 int status;
1364
1365 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1366 encode_compound_hdr(&xdr, &hdr);
1367 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1368 goto out;
1369 if ((status = encode_create(&xdr, args)) != 0)
1370 goto out;
1371 if ((status = encode_getfh(&xdr)) != 0)
1372 goto out;
1373 status = encode_getfattr(&xdr, args->bitmask);
1374out:
1375 return status;
1376}
1377
1378/*
1379 * Encode SYMLINK request
1380 */
1381static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1382{
1383 return nfs4_xdr_enc_create(req, p, args);
1384}
1385
1386/*
1387 * Encode GETATTR request
1388 */
1389static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, uint32_t *p, const struct nfs4_getattr_arg *args)
1390{
1391 struct xdr_stream xdr;
1392 struct compound_hdr hdr = {
1393 .nops = 2,
1394 };
1395 int status;
1396
1397 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1398 encode_compound_hdr(&xdr, &hdr);
1399 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1400 status = encode_getfattr(&xdr, args->bitmask);
1401 return status;
1402}
1403
1404/*
1405 * Encode a CLOSE request
1406 */
1407static int nfs4_xdr_enc_close(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1408{
1409 struct xdr_stream xdr;
1410 struct compound_hdr hdr = {
1411 .nops = 2,
1412 };
1413 int status;
1414
1415 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1416 encode_compound_hdr(&xdr, &hdr);
1417 status = encode_putfh(&xdr, args->fh);
1418 if(status)
1419 goto out;
1420 status = encode_close(&xdr, args);
1421out:
1422 return status;
1423}
1424
1425/*
1426 * Encode an OPEN request
1427 */
1428static int nfs4_xdr_enc_open(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1429{
1430 struct xdr_stream xdr;
1431 struct compound_hdr hdr = {
1432 .nops = 4,
1433 };
1434 int status;
1435
cee54fc9
TM		 1436 status = nfs_wait_on_sequence(args->seqid, req->rq_task);
1437 if (status != 0)
1438 goto out;
1da177e4
LT		 1439 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1440 encode_compound_hdr(&xdr, &hdr);
1441 status = encode_putfh(&xdr, args->fh);
1442 if (status)
1443 goto out;
1444 status = encode_open(&xdr, args);
1445 if (status)
1446 goto out;
1447 status = encode_getfh(&xdr);
1448 if (status)
1449 goto out;
1450 status = encode_getfattr(&xdr, args->bitmask);
1451out:
1452 return status;
1453}
1454
1455/*
1456 * Encode an OPEN_CONFIRM request
1457 */
1458static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_open_confirmargs *args)
1459{
1460 struct xdr_stream xdr;
1461 struct compound_hdr hdr = {
1462 .nops = 2,
1463 };
1464 int status;
1465
cee54fc9
TM		 1466 status = nfs_wait_on_sequence(args->seqid, req->rq_task);
1467 if (status != 0)
1468 goto out;
1da177e4
LT		 1469 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1470 encode_compound_hdr(&xdr, &hdr);
1471 status = encode_putfh(&xdr, args->fh);
1472 if(status)
1473 goto out;
1474 status = encode_open_confirm(&xdr, args);
1475out:
1476 return status;
1477}
1478
1479/*
1480 * Encode an OPEN request with no attributes.
1481 */
1482static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1483{
1484 struct xdr_stream xdr;
1485 struct compound_hdr hdr = {
1486 .nops = 2,
1487 };
1488 int status;
1489
cee54fc9
TM		 1490 status = nfs_wait_on_sequence(args->seqid, req->rq_task);
1491 if (status != 0)
1492 goto out;
1da177e4
LT		 1493 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1494 encode_compound_hdr(&xdr, &hdr);
1495 status = encode_putfh(&xdr, args->fh);
1496 if (status)
1497 goto out;
1498 status = encode_open(&xdr, args);
1499out:
1500 return status;
1501}
1502
1503/*
1504 * Encode an OPEN_DOWNGRADE request
1505 */
1506static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1507{
1508 struct xdr_stream xdr;
1509 struct compound_hdr hdr = {
1510 .nops = 2,
1511 };
1512 int status;
1513
1514 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1515 encode_compound_hdr(&xdr, &hdr);
1516 status = encode_putfh(&xdr, args->fh);
1517 if (status)
1518 goto out;
1519 status = encode_open_downgrade(&xdr, args);
1520out:
1521 return status;
1522}
1523
1524/*
1525 * Encode a LOCK request
1526 */
1527static int nfs4_xdr_enc_lock(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1528{
1529 struct xdr_stream xdr;
1530 struct compound_hdr hdr = {
1531 .nops = 2,
1532 };
cee54fc9 1533 struct nfs_lock_opargs *opargs = args->u.lock;
1da177e4
LT		 1534 int status;
1535
06735b34 1536 status = nfs_wait_on_sequence(opargs->lock_seqid, req->rq_task);
cee54fc9
TM		 1537 if (status != 0)
1538 goto out;
06735b34
TM		 1539 /* Do we need to do an open_to_lock_owner? */
1540 if (opargs->lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)
1541 opargs->new_lock_owner = 0;
1da177e4
LT		 1542 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1543 encode_compound_hdr(&xdr, &hdr);
1544 status = encode_putfh(&xdr, args->fh);
1545 if(status)
1546 goto out;
1547 status = encode_lock(&xdr, args);
1548out:
1549 return status;
1550}
1551
1552/*
1553 * Encode a LOCKT request
1554 */
1555static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1556{
1557 struct xdr_stream xdr;
1558 struct compound_hdr hdr = {
1559 .nops = 2,
1560 };
1561 int status;
1562
1563 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1564 encode_compound_hdr(&xdr, &hdr);
1565 status = encode_putfh(&xdr, args->fh);
1566 if(status)
1567 goto out;
1568 status = encode_lockt(&xdr, args);
1569out:
1570 return status;
1571}
1572
1573/*
1574 * Encode a LOCKU request
1575 */
1576static int nfs4_xdr_enc_locku(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1577{
1578 struct xdr_stream xdr;
1579 struct compound_hdr hdr = {
1580 .nops = 2,
1581 };
1582 int status;
1583
1584 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1585 encode_compound_hdr(&xdr, &hdr);
1586 status = encode_putfh(&xdr, args->fh);
1587 if(status)
1588 goto out;
1589 status = encode_locku(&xdr, args);
1590out:
1591 return status;
1592}
1593
1594/*
1595 * Encode a READLINK request
1596 */
1597static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readlink *args)
1598{
1599 struct xdr_stream xdr;
1600 struct compound_hdr hdr = {
1601 .nops = 2,
1602 };
1603 int status;
1604
1605 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1606 encode_compound_hdr(&xdr, &hdr);
1607 status = encode_putfh(&xdr, args->fh);
1608 if(status)
1609 goto out;
1610 status = encode_readlink(&xdr, args, req);
1611out:
1612 return status;
1613}
1614
1615/*
1616 * Encode a READDIR request
1617 */
1618static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readdir_arg *args)
1619{
1620 struct xdr_stream xdr;
1621 struct compound_hdr hdr = {
1622 .nops = 2,
1623 };
1624 int status;
1625
1626 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1627 encode_compound_hdr(&xdr, &hdr);
1628 status = encode_putfh(&xdr, args->fh);
1629 if(status)
1630 goto out;
1631 status = encode_readdir(&xdr, args, req);
1632out:
1633 return status;
1634}
1635
1636/*
1637 * Encode a READ request
1638 */
1639static int nfs4_xdr_enc_read(struct rpc_rqst *req, uint32_t *p, struct nfs_readargs *args)
1640{
1641 struct rpc_auth *auth = req->rq_task->tk_auth;
1642 struct xdr_stream xdr;
1643 struct compound_hdr hdr = {
1644 .nops = 2,
1645 };
1646 int replen, status;
1647
1648 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1649 encode_compound_hdr(&xdr, &hdr);
1650 status = encode_putfh(&xdr, args->fh);
1651 if (status)
1652 goto out;
1653 status = encode_read(&xdr, args);
1654 if (status)
1655 goto out;
1656
1657 /* set up reply kvec
1658 * toplevel status + taglen=0 + rescount + OP_PUTFH + status
1659 * + OP_READ + status + eof + datalen = 9
1660 */
1661 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
1662 xdr_inline_pages(&req->rq_rcv_buf, replen,
1663 args->pages, args->pgbase, args->count);
1664out:
1665 return status;
1666}
1667
1668/*
1669 * Encode an SETATTR request
1670 */
1671static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, uint32_t *p, struct nfs_setattrargs *args)
1672
1673{
1674 struct xdr_stream xdr;
1675 struct compound_hdr hdr = {
1676 .nops = 3,
1677 };
1678 int status;
1679
1680 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1681 encode_compound_hdr(&xdr, &hdr);
1682 status = encode_putfh(&xdr, args->fh);
1683 if(status)
1684 goto out;
1685 status = encode_setattr(&xdr, args, args->server);
1686 if(status)
1687 goto out;
1688 status = encode_getfattr(&xdr, args->bitmask);
1689out:
1690 return status;
1691}
1692
029d105e
BF		 1693/*
1694 * Encode a GETACL request
1695 */
1696static int
1697nfs4_xdr_enc_getacl(struct rpc_rqst *req, uint32_t *p,
1698 struct nfs_getaclargs *args)
1699{
1700 struct xdr_stream xdr;
1701 struct rpc_auth *auth = req->rq_task->tk_auth;
1702 struct compound_hdr hdr = {
1703 .nops = 2,
1704 };
1705 int replen, status;
1706
1707 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1708 encode_compound_hdr(&xdr, &hdr);
1709 status = encode_putfh(&xdr, args->fh);
1710 if (status)
1711 goto out;
1712 status = encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0);
1713 /* set up reply buffer: */
1714 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
1715 xdr_inline_pages(&req->rq_rcv_buf, replen,
1716 args->acl_pages, args->acl_pgbase, args->acl_len);
1717out:
1718 return status;
1719}
1720
1da177e4
LT		 1721/*
1722 * Encode a WRITE request
1723 */
1724static int nfs4_xdr_enc_write(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1725{
1726 struct xdr_stream xdr;
1727 struct compound_hdr hdr = {
1728 .nops = 2,
1729 };
1730 int status;
1731
1732 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1733 encode_compound_hdr(&xdr, &hdr);
1734 status = encode_putfh(&xdr, args->fh);
1735 if (status)
1736 goto out;
1737 status = encode_write(&xdr, args);
1738out:
1739 return status;
1740}
1741
1742/*
1743 * a COMMIT request
1744 */
1745static int nfs4_xdr_enc_commit(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1746{
1747 struct xdr_stream xdr;
1748 struct compound_hdr hdr = {
1749 .nops = 2,
1750 };
1751 int status;
1752
1753 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1754 encode_compound_hdr(&xdr, &hdr);
1755 status = encode_putfh(&xdr, args->fh);
1756 if (status)
1757 goto out;
1758 status = encode_commit(&xdr, args);
1759out:
1760 return status;
1761}
1762
1763/*
1764 * FSINFO request
1765 */
1766static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs4_fsinfo_arg *args)
1767{
1768 struct xdr_stream xdr;
1769 struct compound_hdr hdr = {
1770 .nops = 2,
1771 };
1772 int status;
1773
1774 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1775 encode_compound_hdr(&xdr, &hdr);
1776 status = encode_putfh(&xdr, args->fh);
1777 if (!status)
1778 status = encode_fsinfo(&xdr, args->bitmask);
1779 return status;
1780}
1781
1782/*
1783 * a PATHCONF request
1784 */
1785static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct nfs4_pathconf_arg *args)
1786{
1da177e4
LT		 1787 struct xdr_stream xdr;
1788 struct compound_hdr hdr = {
1789 .nops = 2,
1790 };
1791 int status;
1792
1793 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1794 encode_compound_hdr(&xdr, &hdr);
1795 status = encode_putfh(&xdr, args->fh);
1796 if (!status)
1797 status = encode_getattr_one(&xdr,
1798 args->bitmask[0] & nfs4_pathconf_bitmap[0]);
1799 return status;
1800}
1801
1802/*
1803 * a STATFS request
1804 */
1805static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, uint32_t *p, const struct nfs4_statfs_arg *args)
1806{
1da177e4
LT		 1807 struct xdr_stream xdr;
1808 struct compound_hdr hdr = {
1809 .nops = 2,
1810 };
1811 int status;
1812
1813 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1814 encode_compound_hdr(&xdr, &hdr);
1815 status = encode_putfh(&xdr, args->fh);
1816 if (status == 0)
1817 status = encode_getattr_two(&xdr,
1818 args->bitmask[0] & nfs4_statfs_bitmap[0],
1819 args->bitmask[1] & nfs4_statfs_bitmap[1]);
1820 return status;
1821}
1822
1823/*
1824 * GETATTR_BITMAP request
1825 */
1826static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, uint32_t *p, const struct nfs_fh *fhandle)
1827{
1828 struct xdr_stream xdr;
1829 struct compound_hdr hdr = {
1830 .nops = 2,
1831 };
1832 int status;
1833
1834 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1835 encode_compound_hdr(&xdr, &hdr);
1836 status = encode_putfh(&xdr, fhandle);
1837 if (status == 0)
1838 status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
1839 FATTR4_WORD0_LINK_SUPPORT|
1840 FATTR4_WORD0_SYMLINK_SUPPORT|
1841 FATTR4_WORD0_ACLSUPPORT);
1842 return status;
1843}
1844
1845/*
1846 * a RENEW request
1847 */
1848static int nfs4_xdr_enc_renew(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1849{
1850 struct xdr_stream xdr;
1851 struct compound_hdr hdr = {
1852 .nops = 1,
1853 };
1854
1855 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1856 encode_compound_hdr(&xdr, &hdr);
1857 return encode_renew(&xdr, clp);
1858}
1859
1860/*
1861 * a SETCLIENTID request
1862 */
1863static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, uint32_t *p, struct nfs4_setclientid *sc)
1864{
1865 struct xdr_stream xdr;
1866 struct compound_hdr hdr = {
1867 .nops = 1,
1868 };
1869
1870 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1871 encode_compound_hdr(&xdr, &hdr);
1872 return encode_setclientid(&xdr, sc);
1873}
1874
1875/*
1876 * a SETCLIENTID_CONFIRM request
1877 */
1878static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1879{
1880 struct xdr_stream xdr;
1881 struct compound_hdr hdr = {
1882 .nops = 3,
1883 };
1884 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
1885 int status;
1886
1887 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1888 encode_compound_hdr(&xdr, &hdr);
1889 status = encode_setclientid_confirm(&xdr, clp);
1890 if (!status)
1891 status = encode_putrootfh(&xdr);
1892 if (!status)
1893 status = encode_fsinfo(&xdr, lease_bitmap);
1894 return status;
1895}
1896
1897/*
1898 * DELEGRETURN request
1899 */
1900static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, uint32_t *p, const struct nfs4_delegreturnargs *args)
1901{
1902 struct xdr_stream xdr;
1903 struct compound_hdr hdr = {
1904 .nops = 2,
1905 };
1906 int status;
1907
1908 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1909 encode_compound_hdr(&xdr, &hdr);
1910 if ((status = encode_putfh(&xdr, args->fhandle)) == 0)
1911 status = encode_delegreturn(&xdr, args->stateid);
1912 return status;
1913}
1914
1915/*
1916 * START OF "GENERIC" DECODE ROUTINES.
1917 * These may look a little ugly since they are imported from a "generic"
1918 * set of XDR encode/decode routines which are intended to be shared by
1919 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
1920 *
1921 * If the pain of reading these is too great, it should be a straightforward
1922 * task to translate them into Linux-specific versions which are more
1923 * consistent with the style used in NFSv2/v3...
1924 */
1925#define READ32(x) (x) = ntohl(*p++)
1926#define READ64(x) do { \
1927 (x) = (u64)ntohl(*p++) << 32; \
1928 (x) |= ntohl(*p++); \
1929} while (0)
1930#define READTIME(x) do { \
1931 p++; \
1932 (x.tv_sec) = ntohl(*p++); \
1933 (x.tv_nsec) = ntohl(*p++); \
1934} while (0)
1935#define COPYMEM(x,nbytes) do { \
1936 memcpy((x), p, nbytes); \
1937 p += XDR_QUADLEN(nbytes); \
1938} while (0)
1939
1940#define READ_BUF(nbytes) do { \
1941 p = xdr_inline_decode(xdr, nbytes); \
1942 if (!p) { \
1943 printk(KERN_WARNING "%s: reply buffer overflowed in line %d.", \
1944 __FUNCTION__, __LINE__); \
1945 return -EIO; \
1946 } \
1947} while (0)
1948
1949static int decode_opaque_inline(struct xdr_stream *xdr, uint32_t *len, char **string)
1950{
1951 uint32_t *p;
1952
1953 READ_BUF(4);
1954 READ32(*len);
1955 READ_BUF(*len);
1956 *string = (char *)p;
1957 return 0;
1958}
1959
1960static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
1961{
1962 uint32_t *p;
1963
1964 READ_BUF(8);
1965 READ32(hdr->status);
1966 READ32(hdr->taglen);
1967
1968 READ_BUF(hdr->taglen + 4);
1969 hdr->tag = (char *)p;
1970 p += XDR_QUADLEN(hdr->taglen);
1971 READ32(hdr->nops);
1972 return 0;
1973}
1974
1975static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
1976{
1977 uint32_t *p;
1978 uint32_t opnum;
1979 int32_t nfserr;
1980
1981 READ_BUF(8);
1982 READ32(opnum);
1983 if (opnum != expected) {
1984 printk(KERN_NOTICE
1985 "nfs4_decode_op_hdr: Server returned operation"
1986 " %d but we issued a request for %d\n",
1987 opnum, expected);
1988 return -EIO;
1989 }
1990 READ32(nfserr);
1991 if (nfserr != NFS_OK)
1992 return -nfs_stat_to_errno(nfserr);
1993 return 0;
1994}
1995
1996/* Dummy routine */
1997static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs4_client *clp)
1998{
1999 uint32_t *p;
2000 uint32_t strlen;
2001 char *str;
2002
2003 READ_BUF(12);
2004 return decode_opaque_inline(xdr, &strlen, &str);
2005}
2006
2007static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2008{
2009 uint32_t bmlen, *p;
2010
2011 READ_BUF(4);
2012 READ32(bmlen);
2013
2014 bitmap[0] = bitmap[1] = 0;
2015 READ_BUF((bmlen << 2));
2016 if (bmlen > 0) {
2017 READ32(bitmap[0]);
2018 if (bmlen > 1)
2019 READ32(bitmap[1]);
2020 }
2021 return 0;
2022}
2023
2024static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, uint32_t **savep)
2025{
2026 uint32_t *p;
2027
2028 READ_BUF(4);
2029 READ32(*attrlen);
2030 *savep = xdr->p;
2031 return 0;
2032}
2033
2034static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2035{
2036 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2037 decode_attr_bitmap(xdr, bitmask);
2038 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2039 } else
2040 bitmask[0] = bitmask[1] = 0;
2041 dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]);
2042 return 0;
2043}
2044
2045static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2046{
2047 uint32_t *p;
2048
2049 *type = 0;
2050 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2051 return -EIO;
2052 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2053 READ_BUF(4);
2054 READ32(*type);
2055 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2056 dprintk("%s: bad type %d\n", __FUNCTION__, *type);
2057 return -EIO;
2058 }
2059 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2060 }
2061 dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type);
2062 return 0;
2063}
2064
2065static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2066{
2067 uint32_t *p;
2068
2069 *change = 0;
2070 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2071 return -EIO;
2072 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2073 READ_BUF(8);
2074 READ64(*change);
2075 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2076 }
2077 dprintk("%s: change attribute=%Lu\n", __FUNCTION__,
2078 (unsigned long long)*change);
2079 return 0;
2080}
2081
2082static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2083{
2084 uint32_t *p;
2085
2086 *size = 0;
2087 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2088 return -EIO;
2089 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2090 READ_BUF(8);
2091 READ64(*size);
2092 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2093 }
2094 dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size);
2095 return 0;
2096}
2097
2098static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2099{
2100 uint32_t *p;
2101
2102 *res = 0;
2103 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2104 return -EIO;
2105 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2106 READ_BUF(4);
2107 READ32(*res);
2108 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2109 }
2110 dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2111 return 0;
2112}
2113
2114static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2115{
2116 uint32_t *p;
2117
2118 *res = 0;
2119 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2120 return -EIO;
2121 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2122 READ_BUF(4);
2123 READ32(*res);
2124 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2125 }
2126 dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2127 return 0;
2128}
2129
2130static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fsid *fsid)
2131{
2132 uint32_t *p;
2133
2134 fsid->major = 0;
2135 fsid->minor = 0;
2136 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2137 return -EIO;
2138 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2139 READ_BUF(16);
2140 READ64(fsid->major);
2141 READ64(fsid->minor);
2142 bitmap[0] &= ~FATTR4_WORD0_FSID;
2143 }
2144 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__,
2145 (unsigned long long)fsid->major,
2146 (unsigned long long)fsid->minor);
2147 return 0;
2148}
2149
2150static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2151{
2152 uint32_t *p;
2153
2154 *res = 60;
2155 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2156 return -EIO;
2157 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2158 READ_BUF(4);
2159 READ32(*res);
2160 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2161 }
2162 dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res);
2163 return 0;
2164}
2165
2166static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2167{
2168 uint32_t *p;
2169
2170 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2171 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2172 return -EIO;
2173 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2174 READ_BUF(4);
2175 READ32(*res);
2176 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2177 }
2178 dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res);
2179 return 0;
2180}
2181
2182static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2183{
2184 uint32_t *p;
2185
2186 *fileid = 0;
2187 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2188 return -EIO;
2189 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2190 READ_BUF(8);
2191 READ64(*fileid);
2192 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2193 }
2194 dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2195 return 0;
2196}
2197
2198static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2199{
2200 uint32_t *p;
2201 int status = 0;
2202
2203 *res = 0;
2204 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2205 return -EIO;
2206 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2207 READ_BUF(8);
2208 READ64(*res);
2209 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2210 }
2211 dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2212 return status;
2213}
2214
2215static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2216{
2217 uint32_t *p;
2218 int status = 0;
2219
2220 *res = 0;
2221 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2222 return -EIO;
2223 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2224 READ_BUF(8);
2225 READ64(*res);
2226 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2227 }
2228 dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2229 return status;
2230}
2231
2232static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2233{
2234 uint32_t *p;
2235 int status = 0;
2236
2237 *res = 0;
2238 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2239 return -EIO;
2240 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2241 READ_BUF(8);
2242 READ64(*res);
2243 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2244 }
2245 dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2246 return status;
2247}
2248
2249static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2250{
2251 uint32_t *p;
2252 int status = 0;
2253
2254 *res = 0;
2255 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2256 return -EIO;
2257 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2258 READ_BUF(8);
2259 READ64(*res);
2260 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2261 }
2262 dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2263 return status;
2264}
2265
2266static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2267{
2268 uint32_t *p;
2269 int status = 0;
2270
2271 *maxlink = 1;
2272 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2273 return -EIO;
2274 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2275 READ_BUF(4);
2276 READ32(*maxlink);
2277 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2278 }
2279 dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink);
2280 return status;
2281}
2282
2283static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2284{
2285 uint32_t *p;
2286 int status = 0;
2287
2288 *maxname = 1024;
2289 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2290 return -EIO;
2291 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2292 READ_BUF(4);
2293 READ32(*maxname);
2294 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2295 }
2296 dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname);
2297 return status;
2298}
2299
2300static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2301{
2302 uint32_t *p;
2303 int status = 0;
2304
2305 *res = 1024;
2306 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2307 return -EIO;
2308 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2309 uint64_t maxread;
2310 READ_BUF(8);
2311 READ64(maxread);
2312 if (maxread > 0x7FFFFFFF)
2313 maxread = 0x7FFFFFFF;
2314 *res = (uint32_t)maxread;
2315 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2316 }
2317 dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res);
2318 return status;
2319}
2320
2321static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2322{
2323 uint32_t *p;
2324 int status = 0;
2325
2326 *res = 1024;
2327 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2328 return -EIO;
2329 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2330 uint64_t maxwrite;
2331 READ_BUF(8);
2332 READ64(maxwrite);
2333 if (maxwrite > 0x7FFFFFFF)
2334 maxwrite = 0x7FFFFFFF;
2335 *res = (uint32_t)maxwrite;
2336 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2337 }
2338 dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res);
2339 return status;
2340}
2341
2342static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
2343{
2344 uint32_t *p;
2345
2346 *mode = 0;
2347 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
2348 return -EIO;
2349 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
2350 READ_BUF(4);
2351 READ32(*mode);
2352 *mode &= ~S_IFMT;
2353 bitmap[1] &= ~FATTR4_WORD1_MODE;
2354 }
2355 dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode);
2356 return 0;
2357}
2358
2359static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
2360{
2361 uint32_t *p;
2362
2363 *nlink = 1;
2364 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
2365 return -EIO;
2366 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
2367 READ_BUF(4);
2368 READ32(*nlink);
2369 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
2370 }
2371 dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink);
2372 return 0;
2373}
2374
2375static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *uid)
2376{
2377 uint32_t len, *p;
2378
2379 *uid = -2;
2380 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
2381 return -EIO;
2382 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
2383 READ_BUF(4);
2384 READ32(len);
2385 READ_BUF(len);
2386 if (len < XDR_MAX_NETOBJ) {
2387 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
2388 dprintk("%s: nfs_map_name_to_uid failed!\n",
2389 __FUNCTION__);
2390 } else
2391 printk(KERN_WARNING "%s: name too long (%u)!\n",
2392 __FUNCTION__, len);
2393 bitmap[1] &= ~FATTR4_WORD1_OWNER;
2394 }
2395 dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid);
2396 return 0;
2397}
2398
2399static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *gid)
2400{
2401 uint32_t len, *p;
2402
2403 *gid = -2;
2404 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
2405 return -EIO;
2406 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
2407 READ_BUF(4);
2408 READ32(len);
2409 READ_BUF(len);
2410 if (len < XDR_MAX_NETOBJ) {
2411 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
2412 dprintk("%s: nfs_map_group_to_gid failed!\n",
2413 __FUNCTION__);
2414 } else
2415 printk(KERN_WARNING "%s: name too long (%u)!\n",
2416 __FUNCTION__, len);
2417 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
2418 }
2419 dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid);
2420 return 0;
2421}
2422
2423static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
2424{
2425 uint32_t major = 0, minor = 0, *p;
2426
2427 *rdev = MKDEV(0,0);
2428 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
2429 return -EIO;
2430 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
2431 dev_t tmp;
2432
2433 READ_BUF(8);
2434 READ32(major);
2435 READ32(minor);
2436 tmp = MKDEV(major, minor);
2437 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
2438 *rdev = tmp;
2439 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
2440 }
2441 dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor);
2442 return 0;
2443}
2444
2445static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2446{
2447 uint32_t *p;
2448 int status = 0;
2449
2450 *res = 0;
2451 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
2452 return -EIO;
2453 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
2454 READ_BUF(8);
2455 READ64(*res);
2456 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
2457 }
2458 dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2459 return status;
2460}
2461
2462static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2463{
2464 uint32_t *p;
2465 int status = 0;
2466
2467 *res = 0;
2468 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
2469 return -EIO;
2470 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
2471 READ_BUF(8);
2472 READ64(*res);
2473 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
2474 }
2475 dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2476 return status;
2477}
2478
2479static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2480{
2481 uint32_t *p;
2482 int status = 0;
2483
2484 *res = 0;
2485 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
2486 return -EIO;
2487 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
2488 READ_BUF(8);
2489 READ64(*res);
2490 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
2491 }
2492 dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2493 return status;
2494}
2495
2496static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
2497{
2498 uint32_t *p;
2499
2500 *used = 0;
2501 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
2502 return -EIO;
2503 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
2504 READ_BUF(8);
2505 READ64(*used);
2506 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
2507 }
2508 dprintk("%s: space used=%Lu\n", __FUNCTION__,
2509 (unsigned long long)*used);
2510 return 0;
2511}
2512
2513static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
2514{
2515 uint32_t *p;
2516 uint64_t sec;
2517 uint32_t nsec;
2518
2519 READ_BUF(12);
2520 READ64(sec);
2521 READ32(nsec);
2522 time->tv_sec = (time_t)sec;
2523 time->tv_nsec = (long)nsec;
2524 return 0;
2525}
2526
2527static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2528{
2529 int status = 0;
2530
2531 time->tv_sec = 0;
2532 time->tv_nsec = 0;
2533 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
2534 return -EIO;
2535 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
2536 status = decode_attr_time(xdr, time);
2537 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
2538 }
2539 dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2540 return status;
2541}
2542
2543static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2544{
2545 int status = 0;
2546
2547 time->tv_sec = 0;
2548 time->tv_nsec = 0;
2549 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
2550 return -EIO;
2551 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
2552 status = decode_attr_time(xdr, time);
2553 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
2554 }
2555 dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2556 return status;
2557}
2558
2559static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2560{
2561 int status = 0;
2562
2563 time->tv_sec = 0;
2564 time->tv_nsec = 0;
2565 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
2566 return -EIO;
2567 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
2568 status = decode_attr_time(xdr, time);
2569 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
2570 }
2571 dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2572 return status;
2573}
2574
2575static int verify_attr_len(struct xdr_stream *xdr, uint32_t *savep, uint32_t attrlen)
2576{
2577 unsigned int attrwords = XDR_QUADLEN(attrlen);
2578 unsigned int nwords = xdr->p - savep;
2579
2580 if (unlikely(attrwords != nwords)) {
2581 printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n",
2582 __FUNCTION__,
2583 attrwords << 2,
2584 (attrwords < nwords) ? '<' : '>',
2585 nwords << 2);
2586 return -EIO;
2587 }
2588 return 0;
2589}
2590
2591static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2592{
2593 uint32_t *p;
2594
2595 READ_BUF(20);
2596 READ32(cinfo->atomic);
2597 READ64(cinfo->before);
2598 READ64(cinfo->after);
2599 return 0;
2600}
2601
2602static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
2603{
2604 uint32_t *p;
2605 uint32_t supp, acc;
2606 int status;
2607
2608 status = decode_op_hdr(xdr, OP_ACCESS);
2609 if (status)
2610 return status;
2611 READ_BUF(8);
2612 READ32(supp);
2613 READ32(acc);
2614 access->supported = supp;
2615 access->access = acc;
2616 return 0;
2617}
2618
2619static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
2620{
2621 uint32_t *p;
2622 int status;
2623
2624 status = decode_op_hdr(xdr, OP_CLOSE);
2625 if (status)
2626 return status;
2627 READ_BUF(sizeof(res->stateid.data));
2628 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2629 return 0;
2630}
2631
2632static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
2633{
2634 uint32_t *p;
2635 int status;
2636
2637 status = decode_op_hdr(xdr, OP_COMMIT);
2638 if (status)
2639 return status;
2640 READ_BUF(8);
2641 COPYMEM(res->verf->verifier, 8);
2642 return 0;
2643}
2644
2645static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2646{
2647 uint32_t *p;
2648 uint32_t bmlen;
2649 int status;
2650
2651 status = decode_op_hdr(xdr, OP_CREATE);
2652 if (status)
2653 return status;
2654 if ((status = decode_change_info(xdr, cinfo)))
2655 return status;
2656 READ_BUF(4);
2657 READ32(bmlen);
2658 READ_BUF(bmlen << 2);
2659 return 0;
2660}
2661
2662static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
2663{
2664 uint32_t *savep;
2665 uint32_t attrlen,
2666 bitmap[2] = {0};
2667 int status;
2668
2669 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2670 goto xdr_error;
2671 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2672 goto xdr_error;
2673 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2674 goto xdr_error;
2675 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
2676 goto xdr_error;
2677 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
2678 goto xdr_error;
2679 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
2680 goto xdr_error;
2681 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
2682 goto xdr_error;
2683 status = verify_attr_len(xdr, savep, attrlen);
2684xdr_error:
2685 if (status != 0)
2686 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2687 return status;
2688}
2689
2690static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
2691{
2692 uint32_t *savep;
2693 uint32_t attrlen,
2694 bitmap[2] = {0};
2695 int status;
2696
2697 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2698 goto xdr_error;
2699 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2700 goto xdr_error;
2701 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2702 goto xdr_error;
2703
2704 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
2705 goto xdr_error;
2706 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
2707 goto xdr_error;
2708 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
2709 goto xdr_error;
2710 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
2711 goto xdr_error;
2712 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
2713 goto xdr_error;
2714 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
2715 goto xdr_error;
2716
2717 status = verify_attr_len(xdr, savep, attrlen);
2718xdr_error:
2719 if (status != 0)
2720 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2721 return status;
2722}
2723
2724static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
2725{
2726 uint32_t *savep;
2727 uint32_t attrlen,
2728 bitmap[2] = {0};
2729 int status;
2730
2731 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2732 goto xdr_error;
2733 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2734 goto xdr_error;
2735 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2736 goto xdr_error;
2737
2738 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
2739 goto xdr_error;
2740 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
2741 goto xdr_error;
2742
2743 status = verify_attr_len(xdr, savep, attrlen);
2744xdr_error:
2745 if (status != 0)
2746 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2747 return status;
2748}
2749
2750static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
2751{
2752 uint32_t *savep;
2753 uint32_t attrlen,
2754 bitmap[2] = {0},
2755 type;
2756 int status, fmode = 0;
2757
2758 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2759 goto xdr_error;
2760 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2761 goto xdr_error;
2762
2763 fattr->bitmap[0] = bitmap[0];
2764 fattr->bitmap[1] = bitmap[1];
2765
2766 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2767 goto xdr_error;
2768
2769
2770 if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
2771 goto xdr_error;
2772 fattr->type = nfs_type2fmt[type].nfs2type;
2773 fmode = nfs_type2fmt[type].mode;
2774
2775 if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
2776 goto xdr_error;
2777 if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
2778 goto xdr_error;
2779 if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid_u.nfs4)) != 0)
2780 goto xdr_error;
2781 if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
2782 goto xdr_error;
2783 if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
2784 goto xdr_error;
2785 fattr->mode |= fmode;
2786 if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
2787 goto xdr_error;
2788 if ((status = decode_attr_owner(xdr, bitmap, server->nfs4_state, &fattr->uid)) != 0)
2789 goto xdr_error;
2790 if ((status = decode_attr_group(xdr, bitmap, server->nfs4_state, &fattr->gid)) != 0)
2791 goto xdr_error;
2792 if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
2793 goto xdr_error;
2794 if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
2795 goto xdr_error;
2796 if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
2797 goto xdr_error;
2798 if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
2799 goto xdr_error;
2800 if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
2801 goto xdr_error;
33801147 2802 if ((status = verify_attr_len(xdr, savep, attrlen)) == 0)
1da177e4 2803 fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
1da177e4
LT		 2804xdr_error:
2805 if (status != 0)
2806 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2807 return status;
2808}
2809
2810
2811static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
2812{
2813 uint32_t *savep;
2814 uint32_t attrlen, bitmap[2];
2815 int status;
2816
2817 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2818 goto xdr_error;
2819 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2820 goto xdr_error;
2821 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2822 goto xdr_error;
2823
2824 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
2825
2826 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
2827 goto xdr_error;
2828 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
2829 goto xdr_error;
2830 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
2831 goto xdr_error;
2832 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
2833 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
2834 goto xdr_error;
2835 fsinfo->wtpref = fsinfo->wtmax;
2836
2837 status = verify_attr_len(xdr, savep, attrlen);
2838xdr_error:
2839 if (status != 0)
2840 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2841 return status;
2842}
2843
2844static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
2845{
2846 uint32_t *p;
2847 uint32_t len;
2848 int status;
2849
2850 status = decode_op_hdr(xdr, OP_GETFH);
2851 if (status)
2852 return status;
2853 /* Zero handle first to allow comparisons */
2854 memset(fh, 0, sizeof(*fh));
2855
2856 READ_BUF(4);
2857 READ32(len);
2858 if (len > NFS4_FHSIZE)
2859 return -EIO;
2860 fh->size = len;
2861 READ_BUF(len);
2862 COPYMEM(fh->data, len);
2863 return 0;
2864}
2865
2866static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2867{
2868 int status;
2869
2870 status = decode_op_hdr(xdr, OP_LINK);
2871 if (status)
2872 return status;
2873 return decode_change_info(xdr, cinfo);
2874}
2875
2876/*
2877 * We create the owner, so we know a proper owner.id length is 4.
2878 */
2879static int decode_lock_denied (struct xdr_stream *xdr, struct nfs_lock_denied *denied)
2880{
2881 uint32_t *p;
2882 uint32_t namelen;
2883
2884 READ_BUF(32);
2885 READ64(denied->offset);
2886 READ64(denied->length);
2887 READ32(denied->type);
2888 READ64(denied->owner.clientid);
2889 READ32(namelen);
2890 READ_BUF(namelen);
2891 if (namelen == 4)
2892 READ32(denied->owner.id);
2893 return -NFS4ERR_DENIED;
2894}
2895
2896static int decode_lock(struct xdr_stream *xdr, struct nfs_lockres *res)
2897{
2898 uint32_t *p;
2899 int status;
2900
2901 status = decode_op_hdr(xdr, OP_LOCK);
2902 if (status == 0) {
06735b34
TM		 2903 READ_BUF(sizeof(res->u.stateid.data));
2904 COPYMEM(res->u.stateid.data, sizeof(res->u.stateid.data));
1da177e4
LT		 2905 } else if (status == -NFS4ERR_DENIED)
2906 return decode_lock_denied(xdr, &res->u.denied);
2907 return status;
2908}
2909
2910static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockres *res)
2911{
2912 int status;
2913 status = decode_op_hdr(xdr, OP_LOCKT);
2914 if (status == -NFS4ERR_DENIED)
2915 return decode_lock_denied(xdr, &res->u.denied);
2916 return status;
2917}
2918
2919static int decode_locku(struct xdr_stream *xdr, struct nfs_lockres *res)
2920{
2921 uint32_t *p;
2922 int status;
2923
2924 status = decode_op_hdr(xdr, OP_LOCKU);
2925 if (status == 0) {
faf5f49c
TM		 2926 READ_BUF(sizeof(res->u.stateid.data));
2927 COPYMEM(res->u.stateid.data, sizeof(res->u.stateid.data));
1da177e4
LT		 2928 }
2929 return status;
2930}
2931
2932static int decode_lookup(struct xdr_stream *xdr)
2933{
2934 return decode_op_hdr(xdr, OP_LOOKUP);
2935}
2936
2937/* This is too sick! */
2938static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
2939{
2940 uint32_t *p;
2941 uint32_t limit_type, nblocks, blocksize;
2942
2943 READ_BUF(12);
2944 READ32(limit_type);
2945 switch (limit_type) {
2946 case 1:
2947 READ64(*maxsize);
2948 break;
2949 case 2:
2950 READ32(nblocks);
2951 READ32(blocksize);
2952 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
2953 }
2954 return 0;
2955}
2956
2957static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
2958{
2959 uint32_t *p;
2960 uint32_t delegation_type;
2961
2962 READ_BUF(4);
2963 READ32(delegation_type);
2964 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
2965 res->delegation_type = 0;
2966 return 0;
2967 }
2968 READ_BUF(20);
2969 COPYMEM(res->delegation.data, sizeof(res->delegation.data));
2970 READ32(res->do_recall);
2971 switch (delegation_type) {
2972 case NFS4_OPEN_DELEGATE_READ:
2973 res->delegation_type = FMODE_READ;
2974 break;
2975 case NFS4_OPEN_DELEGATE_WRITE:
2976 res->delegation_type = FMODE_WRITE|FMODE_READ;
2977 if (decode_space_limit(xdr, &res->maxsize) < 0)
2978 return -EIO;
2979 }
2980 return decode_ace(xdr, NULL, res->server->nfs4_state);
2981}
2982
2983static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
2984{
2985 uint32_t *p;
2986 uint32_t bmlen;
2987 int status;
2988
2989 status = decode_op_hdr(xdr, OP_OPEN);
2990 if (status)
2991 return status;
2992 READ_BUF(sizeof(res->stateid.data));
2993 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2994
2995 decode_change_info(xdr, &res->cinfo);
2996
2997 READ_BUF(8);
2998 READ32(res->rflags);
2999 READ32(bmlen);
3000 if (bmlen > 10)
3001 goto xdr_error;
3002
3003 READ_BUF(bmlen << 2);
3004 p += bmlen;
3005 return decode_delegation(xdr, res);
3006xdr_error:
3007 printk(KERN_NOTICE "%s: xdr error!\n", __FUNCTION__);
3008 return -EIO;
3009}
3010
3011static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3012{
3013 uint32_t *p;
3014 int status;
3015
3016 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3017 if (status)
3018 return status;
3019 READ_BUF(sizeof(res->stateid.data));
3020 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3021 return 0;
3022}
3023
3024static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3025{
3026 uint32_t *p;
3027 int status;
3028
3029 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3030 if (status)
3031 return status;
3032 READ_BUF(sizeof(res->stateid.data));
3033 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3034 return 0;
3035}
3036
3037static int decode_putfh(struct xdr_stream *xdr)
3038{
3039 return decode_op_hdr(xdr, OP_PUTFH);
3040}
3041
3042static int decode_putrootfh(struct xdr_stream *xdr)
3043{
3044 return decode_op_hdr(xdr, OP_PUTROOTFH);
3045}
3046
3047static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3048{
3049 struct kvec *iov = req->rq_rcv_buf.head;
3050 uint32_t *p;
3051 uint32_t count, eof, recvd, hdrlen;
3052 int status;
3053
3054 status = decode_op_hdr(xdr, OP_READ);
3055 if (status)
3056 return status;
3057 READ_BUF(8);
3058 READ32(eof);
3059 READ32(count);
3060 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3061 recvd = req->rq_rcv_buf.len - hdrlen;
3062 if (count > recvd) {
3063 printk(KERN_WARNING "NFS: server cheating in read reply: "
3064 "count %u > recvd %u\n", count, recvd);
3065 count = recvd;
3066 eof = 0;
3067 }
3068 xdr_read_pages(xdr, count);
3069 res->eof = eof;
3070 res->count = count;
3071 return 0;
3072}
3073
3074static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3075{
3076 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3077 struct page *page = *rcvbuf->pages;
3078 struct kvec *iov = rcvbuf->head;
3079 unsigned int nr, pglen = rcvbuf->page_len;
3080 uint32_t *end, *entry, *p, *kaddr;
3081 uint32_t len, attrlen;
3082 int hdrlen, recvd, status;
3083
3084 status = decode_op_hdr(xdr, OP_READDIR);
3085 if (status)
3086 return status;
3087 READ_BUF(8);
3088 COPYMEM(readdir->verifier.data, 8);
eadf4598
TM		 3089 dprintk("%s: verifier = 0x%x%x\n",
3090 __FUNCTION__,
3091 ((u32 *)readdir->verifier.data)[0],
3092 ((u32 *)readdir->verifier.data)[1]);
3093
1da177e4
LT		 3094
3095 hdrlen = (char *) p - (char *) iov->iov_base;
3096 recvd = rcvbuf->len - hdrlen;
3097 if (pglen > recvd)
3098 pglen = recvd;
3099 xdr_read_pages(xdr, pglen);
3100
3101 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3102 kaddr = p = (uint32_t *) kmap_atomic(page, KM_USER0);
3103 end = (uint32_t *) ((char *)p + pglen + readdir->pgbase);
3104 entry = p;
3105 for (nr = 0; *p++; nr++) {
3106 if (p + 3 > end)
3107 goto short_pkt;
eadf4598 3108 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
1da177e4
LT		 3109 p += 2; /* cookie */
3110 len = ntohl(*p++); /* filename length */
3111 if (len > NFS4_MAXNAMLEN) {
3112 printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len);
3113 goto err_unmap;
3114 }
eadf4598 3115 dprintk("filename = %*s\n", len, (char *)p);
1da177e4
LT		 3116 p += XDR_QUADLEN(len);
3117 if (p + 1 > end)
3118 goto short_pkt;
3119 len = ntohl(*p++); /* bitmap length */
3120 p += len;
3121 if (p + 1 > end)
3122 goto short_pkt;
3123 attrlen = XDR_QUADLEN(ntohl(*p++));
3124 p += attrlen; /* attributes */
3125 if (p + 2 > end)
3126 goto short_pkt;
3127 entry = p;
3128 }
3129 if (!nr && (entry[0] != 0 || entry[1] == 0))
3130 goto short_pkt;
3131out:
3132 kunmap_atomic(kaddr, KM_USER0);
3133 return 0;
3134short_pkt:
eadf4598 3135 dprintk("%s: short packet at entry %d\n", __FUNCTION__, nr);
1da177e4
LT		 3136 entry[0] = entry[1] = 0;
3137 /* truncate listing ? */
3138 if (!nr) {
3139 printk(KERN_NOTICE "NFS: readdir reply truncated!\n");
3140 entry[1] = 1;
3141 }
3142 goto out;
3143err_unmap:
3144 kunmap_atomic(kaddr, KM_USER0);
3145 return -errno_NFSERR_IO;
3146}
3147
3148static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3149{
3150 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3151 struct kvec *iov = rcvbuf->head;
3152 int hdrlen, len, recvd;
3153 uint32_t *p;
3154 char *kaddr;
3155 int status;
3156
3157 status = decode_op_hdr(xdr, OP_READLINK);
3158 if (status)
3159 return status;
3160
3161 /* Convert length of symlink */
3162 READ_BUF(4);
3163 READ32(len);
3164 if (len >= rcvbuf->page_len || len <= 0) {
3165 dprintk(KERN_WARNING "nfs: server returned giant symlink!\n");
3166 return -ENAMETOOLONG;
3167 }
3168 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3169 recvd = req->rq_rcv_buf.len - hdrlen;
3170 if (recvd < len) {
3171 printk(KERN_WARNING "NFS: server cheating in readlink reply: "
3172 "count %u > recvd %u\n", len, recvd);
3173 return -EIO;
3174 }
3175 xdr_read_pages(xdr, len);
3176 /*
3177 * The XDR encode routine has set things up so that
3178 * the link text will be copied directly into the
3179 * buffer. We just have to do overflow-checking,
3180 * and and null-terminate the text (the VFS expects
3181 * null-termination).
3182 */
3183 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3184 kaddr[len+rcvbuf->page_base] = '\0';
3185 kunmap_atomic(kaddr, KM_USER0);
3186 return 0;
3187}
3188
3189static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3190{
3191 int status;
3192
3193 status = decode_op_hdr(xdr, OP_REMOVE);
3194 if (status)
3195 goto out;
3196 status = decode_change_info(xdr, cinfo);
3197out:
3198 return status;
3199}
3200
3201static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3202 struct nfs4_change_info *new_cinfo)
3203{
3204 int status;
3205
3206 status = decode_op_hdr(xdr, OP_RENAME);
3207 if (status)
3208 goto out;
3209 if ((status = decode_change_info(xdr, old_cinfo)))
3210 goto out;
3211 status = decode_change_info(xdr, new_cinfo);
3212out:
3213 return status;
3214}
3215
3216static int decode_renew(struct xdr_stream *xdr)
3217{
3218 return decode_op_hdr(xdr, OP_RENEW);
3219}
3220
029d105e
BF		 3221static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
3222 size_t *acl_len)
3223{
3224 uint32_t *savep;
3225 uint32_t attrlen,
3226 bitmap[2] = {0};
3227 struct kvec *iov = req->rq_rcv_buf.head;
3228 int status;
3229
3230 *acl_len = 0;
3231 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3232 goto out;
3233 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3234 goto out;
3235 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3236 goto out;
3237
3238 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
3239 return -EIO;
3240 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
3241 int hdrlen, recvd;
3242
3243 /* We ignore &savep and don't do consistency checks on
3244 * the attr length. Let userspace figure it out.... */
3245 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
3246 recvd = req->rq_rcv_buf.len - hdrlen;
3247 if (attrlen > recvd) {
3248 printk(KERN_WARNING "NFS: server cheating in getattr"
3249 " acl reply: attrlen %u > recvd %u\n",
3250 attrlen, recvd);
3251 return -EINVAL;
3252 }
3253 if (attrlen <= *acl_len)
3254 xdr_read_pages(xdr, attrlen);
3255 *acl_len = attrlen;
8c233cf9
BF		 3256 } else
3257 status = -EOPNOTSUPP;
029d105e
BF		 3258
3259out:
3260 return status;
3261}
3262
1da177e4
LT		 3263static int
3264decode_savefh(struct xdr_stream *xdr)
3265{
3266 return decode_op_hdr(xdr, OP_SAVEFH);
3267}
3268
3269static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res)
3270{
3271 uint32_t *p;
3272 uint32_t bmlen;
3273 int status;
3274
3275
3276 status = decode_op_hdr(xdr, OP_SETATTR);
3277 if (status)
3278 return status;
3279 READ_BUF(4);
3280 READ32(bmlen);
3281 READ_BUF(bmlen << 2);
3282 return 0;
3283}
3284
3285static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_client *clp)
3286{
3287 uint32_t *p;
3288 uint32_t opnum;
3289 int32_t nfserr;
3290
3291 READ_BUF(8);
3292 READ32(opnum);
3293 if (opnum != OP_SETCLIENTID) {
3294 printk(KERN_NOTICE
3295 "nfs4_decode_setclientid: Server returned operation"
3296 " %d\n", opnum);
3297 return -EIO;
3298 }
3299 READ32(nfserr);
3300 if (nfserr == NFS_OK) {
3301 READ_BUF(8 + sizeof(clp->cl_confirm.data));
3302 READ64(clp->cl_clientid);
3303 COPYMEM(clp->cl_confirm.data, sizeof(clp->cl_confirm.data));
3304 } else if (nfserr == NFSERR_CLID_INUSE) {
3305 uint32_t len;
3306
3307 /* skip netid string */
3308 READ_BUF(4);
3309 READ32(len);
3310 READ_BUF(len);
3311
3312 /* skip uaddr string */
3313 READ_BUF(4);
3314 READ32(len);
3315 READ_BUF(len);
3316 return -NFSERR_CLID_INUSE;
3317 } else
3318 return -nfs_stat_to_errno(nfserr);
3319
3320 return 0;
3321}
3322
3323static int decode_setclientid_confirm(struct xdr_stream *xdr)
3324{
3325 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
3326}
3327
3328static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
3329{
3330 uint32_t *p;
3331 int status;
3332
3333 status = decode_op_hdr(xdr, OP_WRITE);
3334 if (status)
3335 return status;
3336
3337 READ_BUF(16);
3338 READ32(res->count);
3339 READ32(res->verf->committed);
3340 COPYMEM(res->verf->verifier, 8);
3341 return 0;
3342}
3343
3344static int decode_delegreturn(struct xdr_stream *xdr)
3345{
3346 return decode_op_hdr(xdr, OP_DELEGRETURN);
3347}
3348
3349/*
3350 * Decode OPEN_DOWNGRADE response
3351 */
3352static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3353{
3354 struct xdr_stream xdr;
3355 struct compound_hdr hdr;
3356 int status;
3357
3358 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3359 status = decode_compound_hdr(&xdr, &hdr);
3360 if (status)
3361 goto out;
3362 status = decode_putfh(&xdr);
3363 if (status)
3364 goto out;
3365 status = decode_open_downgrade(&xdr, res);
3366out:
3367 return status;
3368}
3369
3370/*
3371 * END OF "GENERIC" DECODE ROUTINES.
3372 */
3373
3374/*
3375 * Decode ACCESS response
3376 */
3377static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_accessres *res)
3378{
3379 struct xdr_stream xdr;
3380 struct compound_hdr hdr;
3381 int status;
3382
3383 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3384 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3385 goto out;
3386 if ((status = decode_putfh(&xdr)) == 0)
3387 status = decode_access(&xdr, res);
3388out:
3389 return status;
3390}
3391
3392/*
3393 * Decode LOOKUP response
3394 */
3395static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3396{
3397 struct xdr_stream xdr;
3398 struct compound_hdr hdr;
3399 int status;
3400
3401 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3402 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3403 goto out;
3404 if ((status = decode_putfh(&xdr)) != 0)
3405 goto out;
3406 if ((status = decode_lookup(&xdr)) != 0)
3407 goto out;
3408 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3409 goto out;
3410 status = decode_getfattr(&xdr, res->fattr, res->server);
3411out:
3412 return status;
3413}
3414
3415/*
3416 * Decode LOOKUP_ROOT response
3417 */
3418static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3419{
3420 struct xdr_stream xdr;
3421 struct compound_hdr hdr;
3422 int status;
3423
3424 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3425 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3426 goto out;
3427 if ((status = decode_putrootfh(&xdr)) != 0)
3428 goto out;
3429 if ((status = decode_getfh(&xdr, res->fh)) == 0)
3430 status = decode_getfattr(&xdr, res->fattr, res->server);
3431out:
3432 return status;
3433}
3434
3435/*
3436 * Decode REMOVE response
3437 */
3438static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo)
3439{
3440 struct xdr_stream xdr;
3441 struct compound_hdr hdr;
3442 int status;
3443
3444 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3445 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3446 goto out;
3447 if ((status = decode_putfh(&xdr)) == 0)
3448 status = decode_remove(&xdr, cinfo);
3449out:
3450 return status;
3451}
3452
3453/*
3454 * Decode RENAME response
3455 */
3456static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_rename_res *res)
3457{
3458 struct xdr_stream xdr;
3459 struct compound_hdr hdr;
3460 int status;
3461
3462 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3463 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3464 goto out;
3465 if ((status = decode_putfh(&xdr)) != 0)
3466 goto out;
3467 if ((status = decode_savefh(&xdr)) != 0)
3468 goto out;
3469 if ((status = decode_putfh(&xdr)) != 0)
3470 goto out;
3471 status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo);
3472out:
3473 return status;
3474}
3475
3476/*
3477 * Decode LINK response
3478 */
3479static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo)
3480{
3481 struct xdr_stream xdr;
3482 struct compound_hdr hdr;
3483 int status;
3484
3485 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3486 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3487 goto out;
3488 if ((status = decode_putfh(&xdr)) != 0)
3489 goto out;
3490 if ((status = decode_savefh(&xdr)) != 0)
3491 goto out;
3492 if ((status = decode_putfh(&xdr)) != 0)
3493 goto out;
3494 status = decode_link(&xdr, cinfo);
3495out:
3496 return status;
3497}
3498
3499/*
3500 * Decode CREATE response
3501 */
3502static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3503{
3504 struct xdr_stream xdr;
3505 struct compound_hdr hdr;
3506 int status;
3507
3508 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3509 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3510 goto out;
3511 if ((status = decode_putfh(&xdr)) != 0)
3512 goto out;
3513 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
3514 goto out;
3515 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3516 goto out;
3517 status = decode_getfattr(&xdr, res->fattr, res->server);
3518 if (status == NFS4ERR_DELAY)
3519 status = 0;
3520out:
3521 return status;
3522}
3523
3524/*
3525 * Decode SYMLINK response
3526 */
3527static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3528{
3529 return nfs4_xdr_dec_create(rqstp, p, res);
3530}
3531
3532/*
3533 * Decode GETATTR response
3534 */
3535static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_getattr_res *res)
3536{
3537 struct xdr_stream xdr;
3538 struct compound_hdr hdr;
3539 int status;
3540
3541 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3542 status = decode_compound_hdr(&xdr, &hdr);
3543 if (status)
3544 goto out;
3545 status = decode_putfh(&xdr);
3546 if (status)
3547 goto out;
3548 status = decode_getfattr(&xdr, res->fattr, res->server);
3549out:
3550 return status;
3551
3552}
3553
23ec6965
BF		 3554/*
3555 * Encode an SETACL request
3556 */
3557static int
3558nfs4_xdr_enc_setacl(struct rpc_rqst *req, uint32_t *p, struct nfs_setaclargs *args)
3559{
3560 struct xdr_stream xdr;
3561 struct compound_hdr hdr = {
3562 .nops = 2,
3563 };
3564 int status;
3565
3566 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
3567 encode_compound_hdr(&xdr, &hdr);
3568 status = encode_putfh(&xdr, args->fh);
3569 if (status)
3570 goto out;
3571 status = encode_setacl(&xdr, args);
3572out:
3573 return status;
3574}
3575/*
3576 * Decode SETACL response
3577 */
3578static int
3579nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, uint32_t *p, void *res)
3580{
3581 struct xdr_stream xdr;
3582 struct compound_hdr hdr;
3583 int status;
3584
3585 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3586 status = decode_compound_hdr(&xdr, &hdr);
3587 if (status)
3588 goto out;
3589 status = decode_putfh(&xdr);
3590 if (status)
3591 goto out;
3592 status = decode_setattr(&xdr, res);
3593out:
3594 return status;
3595}
1da177e4 3596
029d105e
BF		 3597/*
3598 * Decode GETACL response
3599 */
3600static int
3601nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, uint32_t *p, size_t *acl_len)
3602{
3603 struct xdr_stream xdr;
3604 struct compound_hdr hdr;
3605 int status;
3606
3607 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3608 status = decode_compound_hdr(&xdr, &hdr);
3609 if (status)
3610 goto out;
3611 status = decode_putfh(&xdr);
3612 if (status)
3613 goto out;
3614 status = decode_getacl(&xdr, rqstp, acl_len);
3615
3616out:
3617 return status;
3618}
3619
1da177e4
LT		 3620/*
3621 * Decode CLOSE response
3622 */
3623static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3624{
3625 struct xdr_stream xdr;
3626 struct compound_hdr hdr;
3627 int status;
3628
3629 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3630 status = decode_compound_hdr(&xdr, &hdr);
3631 if (status)
3632 goto out;
3633 status = decode_putfh(&xdr);
3634 if (status)
3635 goto out;
3636 status = decode_close(&xdr, res);
3637out:
3638 return status;
3639}
3640
3641/*
3642 * Decode OPEN response
3643 */
3644static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3645{
3646 struct xdr_stream xdr;
3647 struct compound_hdr hdr;
3648 int status;
3649
3650 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3651 status = decode_compound_hdr(&xdr, &hdr);
3652 if (status)
3653 goto out;
3654 status = decode_putfh(&xdr);
3655 if (status)
3656 goto out;
3657 status = decode_open(&xdr, res);
3658 if (status)
3659 goto out;
3660 status = decode_getfh(&xdr, &res->fh);
3661 if (status)
3662 goto out;
3663 status = decode_getfattr(&xdr, res->f_attr, res->server);
3664 if (status == NFS4ERR_DELAY)
3665 status = 0;
3666out:
3667 return status;
3668}
3669
3670/*
3671 * Decode OPEN_CONFIRM response
3672 */
3673static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_open_confirmres *res)
3674{
3675 struct xdr_stream xdr;
3676 struct compound_hdr hdr;
3677 int status;
3678
3679 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3680 status = decode_compound_hdr(&xdr, &hdr);
3681 if (status)
3682 goto out;
3683 status = decode_putfh(&xdr);
3684 if (status)
3685 goto out;
3686 status = decode_open_confirm(&xdr, res);
3687out:
3688 return status;
3689}
3690
3691/*
3692 * Decode OPEN response
3693 */
3694static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3695{
3696 struct xdr_stream xdr;
3697 struct compound_hdr hdr;
3698 int status;
3699
3700 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3701 status = decode_compound_hdr(&xdr, &hdr);
3702 if (status)
3703 goto out;
3704 status = decode_putfh(&xdr);
3705 if (status)
3706 goto out;
3707 status = decode_open(&xdr, res);
3708out:
3709 return status;
3710}
3711
3712/*
3713 * Decode SETATTR response
3714 */
3715static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_setattrres *res)
3716{
3717 struct xdr_stream xdr;
3718 struct compound_hdr hdr;
3719 int status;
3720
3721 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3722 status = decode_compound_hdr(&xdr, &hdr);
3723 if (status)
3724 goto out;
3725 status = decode_putfh(&xdr);
3726 if (status)
3727 goto out;
3728 status = decode_setattr(&xdr, res);
3729 if (status)
3730 goto out;
3731 status = decode_getfattr(&xdr, res->fattr, res->server);
3732 if (status == NFS4ERR_DELAY)
3733 status = 0;
3734out:
3735 return status;
3736}
3737
3738/*
3739 * Decode LOCK response
3740 */
3741static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3742{
3743 struct xdr_stream xdr;
3744 struct compound_hdr hdr;
3745 int status;
3746
3747 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3748 status = decode_compound_hdr(&xdr, &hdr);
3749 if (status)
3750 goto out;
3751 status = decode_putfh(&xdr);
3752 if (status)
3753 goto out;
3754 status = decode_lock(&xdr, res);
3755out:
3756 return status;
3757}
3758
3759/*
3760 * Decode LOCKT response
3761 */
3762static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3763{
3764 struct xdr_stream xdr;
3765 struct compound_hdr hdr;
3766 int status;
3767
3768 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3769 status = decode_compound_hdr(&xdr, &hdr);
3770 if (status)
3771 goto out;
3772 status = decode_putfh(&xdr);
3773 if (status)
3774 goto out;
3775 status = decode_lockt(&xdr, res);
3776out:
3777 return status;
3778}
3779
3780/*
3781 * Decode LOCKU response
3782 */
3783static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3784{
3785 struct xdr_stream xdr;
3786 struct compound_hdr hdr;
3787 int status;
3788
3789 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3790 status = decode_compound_hdr(&xdr, &hdr);
3791 if (status)
3792 goto out;
3793 status = decode_putfh(&xdr);
3794 if (status)
3795 goto out;
3796 status = decode_locku(&xdr, res);
3797out:
3798 return status;
3799}
3800
3801/*
3802 * Decode READLINK response
3803 */
3804static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, uint32_t *p, void *res)
3805{
3806 struct xdr_stream xdr;
3807 struct compound_hdr hdr;
3808 int status;
3809
3810 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3811 status = decode_compound_hdr(&xdr, &hdr);
3812 if (status)
3813 goto out;
3814 status = decode_putfh(&xdr);
3815 if (status)
3816 goto out;
3817 status = decode_readlink(&xdr, rqstp);
3818out:
3819 return status;
3820}
3821
3822/*
3823 * Decode READDIR response
3824 */
3825static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_readdir_res *res)
3826{
3827 struct xdr_stream xdr;
3828 struct compound_hdr hdr;
3829 int status;
3830
3831 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3832 status = decode_compound_hdr(&xdr, &hdr);
3833 if (status)
3834 goto out;
3835 status = decode_putfh(&xdr);
3836 if (status)
3837 goto out;
3838 status = decode_readdir(&xdr, rqstp, res);
3839out:
3840 return status;
3841}
3842
3843/*
3844 * Decode Read response
3845 */
3846static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_readres *res)
3847{
3848 struct xdr_stream xdr;
3849 struct compound_hdr hdr;
3850 int status;
3851
3852 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3853 status = decode_compound_hdr(&xdr, &hdr);
3854 if (status)
3855 goto out;
3856 status = decode_putfh(&xdr);
3857 if (status)
3858 goto out;
3859 status = decode_read(&xdr, rqstp, res);
3860 if (!status)
3861 status = res->count;
3862out:
3863 return status;
3864}
3865
3866/*
3867 * Decode WRITE response
3868 */
3869static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
3870{
3871 struct xdr_stream xdr;
3872 struct compound_hdr hdr;
3873 int status;
3874
3875 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3876 status = decode_compound_hdr(&xdr, &hdr);
3877 if (status)
3878 goto out;
3879 status = decode_putfh(&xdr);
3880 if (status)
3881 goto out;
3882 status = decode_write(&xdr, res);
3883 if (!status)
3884 status = res->count;
3885out:
3886 return status;
3887}
3888
3889/*
3890 * Decode COMMIT response
3891 */
3892static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
3893{
3894 struct xdr_stream xdr;
3895 struct compound_hdr hdr;
3896 int status;
3897
3898 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3899 status = decode_compound_hdr(&xdr, &hdr);
3900 if (status)
3901 goto out;
3902 status = decode_putfh(&xdr);
3903 if (status)
3904 goto out;
3905 status = decode_commit(&xdr, res);
3906out:
3907 return status;
3908}
3909
3910/*
3911 * FSINFO request
3912 */
3913static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
3914{
3915 struct xdr_stream xdr;
3916 struct compound_hdr hdr;
3917 int status;
3918
3919 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3920 status = decode_compound_hdr(&xdr, &hdr);
3921 if (!status)
3922 status = decode_putfh(&xdr);
3923 if (!status)
3924 status = decode_fsinfo(&xdr, fsinfo);
3925 if (!status)
3926 status = -nfs_stat_to_errno(hdr.status);
3927 return status;
3928}
3929
3930/*
3931 * PATHCONF request
3932 */
3933static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, uint32_t *p, struct nfs_pathconf *pathconf)
3934{
3935 struct xdr_stream xdr;
3936 struct compound_hdr hdr;
3937 int status;
3938
3939 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3940 status = decode_compound_hdr(&xdr, &hdr);
3941 if (!status)
3942 status = decode_putfh(&xdr);
3943 if (!status)
3944 status = decode_pathconf(&xdr, pathconf);
3945 return status;
3946}
3947
3948/*
3949 * STATFS request
3950 */
3951static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, uint32_t *p, struct nfs_fsstat *fsstat)
3952{
3953 struct xdr_stream xdr;
3954 struct compound_hdr hdr;
3955 int status;
3956
3957 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3958 status = decode_compound_hdr(&xdr, &hdr);
3959 if (!status)
3960 status = decode_putfh(&xdr);
3961 if (!status)
3962 status = decode_statfs(&xdr, fsstat);
3963 return status;
3964}
3965
3966/*
3967 * GETATTR_BITMAP request
3968 */
3969static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, uint32_t *p, struct nfs4_server_caps_res *res)
3970{
3971 struct xdr_stream xdr;
3972 struct compound_hdr hdr;
3973 int status;
3974
3975 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
3976 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3977 goto out;
3978 if ((status = decode_putfh(&xdr)) != 0)
3979 goto out;
3980 status = decode_server_caps(&xdr, res);
3981out:
3982 return status;
3983}
3984
3985/*
3986 * Decode RENEW response
3987 */
3988static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
3989{
3990 struct xdr_stream xdr;
3991 struct compound_hdr hdr;
3992 int status;
3993
3994 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3995 status = decode_compound_hdr(&xdr, &hdr);
3996 if (!status)
3997 status = decode_renew(&xdr);
3998 return status;
3999}
4000
4001/*
4002 * a SETCLIENTID request
4003 */
4004static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, uint32_t *p,
4005 struct nfs4_client *clp)
4006{
4007 struct xdr_stream xdr;
4008 struct compound_hdr hdr;
4009 int status;
4010
4011 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4012 status = decode_compound_hdr(&xdr, &hdr);
4013 if (!status)
4014 status = decode_setclientid(&xdr, clp);
4015 if (!status)
4016 status = -nfs_stat_to_errno(hdr.status);
4017 return status;
4018}
4019
4020/*
4021 * a SETCLIENTID_CONFIRM request
4022 */
4023static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
4024{
4025 struct xdr_stream xdr;
4026 struct compound_hdr hdr;
4027 int status;
4028
4029 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4030 status = decode_compound_hdr(&xdr, &hdr);
4031 if (!status)
4032 status = decode_setclientid_confirm(&xdr);
4033 if (!status)
4034 status = decode_putrootfh(&xdr);
4035 if (!status)
4036 status = decode_fsinfo(&xdr, fsinfo);
4037 if (!status)
4038 status = -nfs_stat_to_errno(hdr.status);
4039 return status;
4040}
4041
4042/*
4043 * DELEGRETURN request
4044 */
4045static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
4046{
4047 struct xdr_stream xdr;
4048 struct compound_hdr hdr;
4049 int status;
4050
4051 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4052 status = decode_compound_hdr(&xdr, &hdr);
4053 if (status == 0) {
4054 status = decode_putfh(&xdr);
4055 if (status == 0)
4056 status = decode_delegreturn(&xdr);
4057 }
4058 return status;
4059}
4060
4061uint32_t *nfs4_decode_dirent(uint32_t *p, struct nfs_entry *entry, int plus)
4062{
4063 uint32_t bitmap[2] = {0};
4064 uint32_t len;
4065
4066 if (!*p++) {
4067 if (!*p)
4068 return ERR_PTR(-EAGAIN);
4069 entry->eof = 1;
4070 return ERR_PTR(-EBADCOOKIE);
4071 }
4072
4073 entry->prev_cookie = entry->cookie;
4074 p = xdr_decode_hyper(p, &entry->cookie);
4075 entry->len = ntohl(*p++);
4076 entry->name = (const char *) p;
4077 p += XDR_QUADLEN(entry->len);
4078
4079 /*
4080 * In case the server doesn't return an inode number,
4081 * we fake one here. (We don't use inode number 0,
4082 * since glibc seems to choke on it...)
4083 */
4084 entry->ino = 1;
4085
4086 len = ntohl(*p++); /* bitmap length */
4087 if (len-- > 0) {
4088 bitmap[0] = ntohl(*p++);
4089 if (len-- > 0) {
4090 bitmap[1] = ntohl(*p++);
4091 p += len;
4092 }
4093 }
4094 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
4095 if (len > 0) {
97d312d0
MN		 4096 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
4097 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
4098 /* Ignore the return value of rdattr_error for now */
4099 p++;
4100 len--;
4101 }
1da177e4
LT		 4102 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
4103 xdr_decode_hyper(p, &entry->ino);
4104 else if (bitmap[0] == FATTR4_WORD0_FILEID)
4105 xdr_decode_hyper(p, &entry->ino);
4106 p += len;
4107 }
4108
4109 entry->eof = !p[0] && p[1];
4110 return p;
4111}
4112
4113/*
4114 * We need to translate between nfs status return values and
4115 * the local errno values which may not be the same.
4116 */
4117static struct {
4118 int stat;
4119 int errno;
4120} nfs_errtbl[] = {
4121 { NFS4_OK, 0 },
4122 { NFS4ERR_PERM, EPERM },
4123 { NFS4ERR_NOENT, ENOENT },
4124 { NFS4ERR_IO, errno_NFSERR_IO },
4125 { NFS4ERR_NXIO, ENXIO },
4126 { NFS4ERR_ACCESS, EACCES },
4127 { NFS4ERR_EXIST, EEXIST },
4128 { NFS4ERR_XDEV, EXDEV },
4129 { NFS4ERR_NOTDIR, ENOTDIR },
4130 { NFS4ERR_ISDIR, EISDIR },
4131 { NFS4ERR_INVAL, EINVAL },
4132 { NFS4ERR_FBIG, EFBIG },
4133 { NFS4ERR_NOSPC, ENOSPC },
4134 { NFS4ERR_ROFS, EROFS },
4135 { NFS4ERR_MLINK, EMLINK },
4136 { NFS4ERR_NAMETOOLONG, ENAMETOOLONG },
4137 { NFS4ERR_NOTEMPTY, ENOTEMPTY },
4138 { NFS4ERR_DQUOT, EDQUOT },
4139 { NFS4ERR_STALE, ESTALE },
4140 { NFS4ERR_BADHANDLE, EBADHANDLE },
6ebf3656
MN		 4141 { NFS4ERR_BADOWNER, EINVAL },
4142 { NFS4ERR_BADNAME, EINVAL },
1da177e4
LT		 4143 { NFS4ERR_BAD_COOKIE, EBADCOOKIE },
4144 { NFS4ERR_NOTSUPP, ENOTSUPP },
4145 { NFS4ERR_TOOSMALL, ETOOSMALL },
4146 { NFS4ERR_SERVERFAULT, ESERVERFAULT },
4147 { NFS4ERR_BADTYPE, EBADTYPE },
4148 { NFS4ERR_LOCKED, EAGAIN },
4149 { NFS4ERR_RESOURCE, EREMOTEIO },
4150 { NFS4ERR_SYMLINK, ELOOP },
4151 { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP },
4152 { NFS4ERR_DEADLOCK, EDEADLK },
4153 { NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs
4154 * to be handled by a
4155 * middle-layer.
4156 */
4157 { -1, EIO }
4158};
4159
4160/*
4161 * Convert an NFS error code to a local one.
4162 * This one is used jointly by NFSv2 and NFSv3.
4163 */
4164static int
4165nfs_stat_to_errno(int stat)
4166{
4167 int i;
4168 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
4169 if (nfs_errtbl[i].stat == stat)
4170 return nfs_errtbl[i].errno;
4171 }
4172 if (stat <= 10000 || stat > 10100) {
4173 /* The server is looney tunes. */
4174 return ESERVERFAULT;
4175 }
4176 /* If we cannot translate the error, the recovery routines should
4177 * handle it.
4178 * Note: remaining NFSv4 error codes have values > 10000, so should
4179 * not conflict with native Linux error codes.
4180 */
4181 return stat;
4182}
4183
4184#ifndef MAX
4185# define MAX(a, b) (((a) > (b))? (a) : (b))
4186#endif
4187
4188#define PROC(proc, argtype, restype) \
4189[NFSPROC4_CLNT_##proc] = { \
4190 .p_proc = NFSPROC4_COMPOUND, \
4191 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
4192 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
4193 .p_bufsiz = MAX(NFS4_##argtype##_sz,NFS4_##restype##_sz) << 2, \
4194 }
4195
4196struct rpc_procinfo nfs4_procedures[] = {
4197 PROC(READ, enc_read, dec_read),
4198 PROC(WRITE, enc_write, dec_write),
4199 PROC(COMMIT, enc_commit, dec_commit),
4200 PROC(OPEN, enc_open, dec_open),
4201 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
4202 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
4203 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
4204 PROC(CLOSE, enc_close, dec_close),
4205 PROC(SETATTR, enc_setattr, dec_setattr),
4206 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
4207 PROC(RENEW, enc_renew, dec_renew),
4208 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
4209 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
4210 PROC(LOCK, enc_lock, dec_lock),
4211 PROC(LOCKT, enc_lockt, dec_lockt),
4212 PROC(LOCKU, enc_locku, dec_locku),
4213 PROC(ACCESS, enc_access, dec_access),
4214 PROC(GETATTR, enc_getattr, dec_getattr),
4215 PROC(LOOKUP, enc_lookup, dec_lookup),
4216 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
4217 PROC(REMOVE, enc_remove, dec_remove),
4218 PROC(RENAME, enc_rename, dec_rename),
4219 PROC(LINK, enc_link, dec_link),
4220 PROC(SYMLINK, enc_symlink, dec_symlink),
4221 PROC(CREATE, enc_create, dec_create),
4222 PROC(PATHCONF, enc_pathconf, dec_pathconf),
4223 PROC(STATFS, enc_statfs, dec_statfs),
4224 PROC(READLINK, enc_readlink, dec_readlink),
4225 PROC(READDIR, enc_readdir, dec_readdir),
4226 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
4227 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
029d105e 4228 PROC(GETACL, enc_getacl, dec_getacl),
23ec6965 4229 PROC(SETACL, enc_setacl, dec_setacl),
1da177e4
LT		 4230};
4231
4232struct rpc_version nfs_version4 = {
4233 .number = 4,
4234 .nrprocs = sizeof(nfs4_procedures)/sizeof(nfs4_procedures[0]),
4235 .procs = nfs4_procedures
4236};
4237
4238/*
4239 * Local variables:
4240 * c-basic-offset: 8
4241 * End:
4242 */
Linux kernel - Deliverables
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