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NFSv4: Add post-op attributes to nfs4_proc_link()
[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)
56ae19f3
TM		 98#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
99#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
1da177e4
LT		 100#define encode_fsinfo_maxsz (op_encode_hdr_maxsz + 2)
101#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11)
102#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
103#define decode_renew_maxsz (op_decode_hdr_maxsz)
104#define encode_setclientid_maxsz \
105 (op_encode_hdr_maxsz + \
106 4 /*server->ip_addr*/ + \
107 1 /*Netid*/ + \
108 6 /*uaddr*/ + \
109 6 + (NFS4_VERIFIER_SIZE >> 2))
110#define decode_setclientid_maxsz \
111 (op_decode_hdr_maxsz + \
112 2 + \
113 1024) /* large value for CLID_INUSE */
114#define encode_setclientid_confirm_maxsz \
115 (op_encode_hdr_maxsz + \
116 3 + (NFS4_VERIFIER_SIZE >> 2))
117#define decode_setclientid_confirm_maxsz \
118 (op_decode_hdr_maxsz)
119#define encode_lookup_maxsz (op_encode_hdr_maxsz + \
120 1 + ((3 + NFS4_FHSIZE) >> 2))
121#define encode_remove_maxsz (op_encode_hdr_maxsz + \
122 nfs4_name_maxsz)
123#define encode_rename_maxsz (op_encode_hdr_maxsz + \
124 2 * nfs4_name_maxsz)
125#define decode_rename_maxsz (op_decode_hdr_maxsz + 5 + 5)
126#define encode_link_maxsz (op_encode_hdr_maxsz + \
127 nfs4_name_maxsz)
128#define decode_link_maxsz (op_decode_hdr_maxsz + 5)
129#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
130 1 + nfs4_name_maxsz + \
131 nfs4_path_maxsz + \
96928206 132 nfs4_fattr_maxsz)
1da177e4
LT		 133#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
134#define encode_create_maxsz (op_encode_hdr_maxsz + \
135 2 + nfs4_name_maxsz + \
96928206 136 nfs4_fattr_maxsz)
1da177e4
LT		 137#define decode_create_maxsz (op_decode_hdr_maxsz + 8)
138#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
139#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
140#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
141#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
142#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
143 encode_putfh_maxsz + \
144 op_encode_hdr_maxsz + 7)
145#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
146 decode_putfh_maxsz + \
147 op_decode_hdr_maxsz + 2)
148#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
149 encode_putfh_maxsz + \
150 op_encode_hdr_maxsz)
151#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
152 decode_putfh_maxsz + \
153 op_decode_hdr_maxsz)
154#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
155 encode_putfh_maxsz + \
156 op_encode_hdr_maxsz + 9)
157#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
158 decode_putfh_maxsz + \
159 op_decode_hdr_maxsz + 2)
160#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
161 encode_putfh_maxsz + \
162 op_encode_hdr_maxsz + 8)
163#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
164 decode_putfh_maxsz + \
165 op_decode_hdr_maxsz + 4)
166#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
167 encode_putfh_maxsz + \
168 op_encode_hdr_maxsz + 3)
169#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
170 decode_putfh_maxsz + \
171 op_decode_hdr_maxsz + 2)
172#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
173 encode_putfh_maxsz + \
174 op_encode_hdr_maxsz + \
175 13 + 3 + 2 + 64 + \
176 encode_getattr_maxsz + \
177 encode_getfh_maxsz)
178#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
179 decode_putfh_maxsz + \
180 op_decode_hdr_maxsz + 4 + 5 + 2 + 3 + \
181 decode_getattr_maxsz + \
182 decode_getfh_maxsz)
183#define NFS4_enc_open_confirm_sz \
184 (compound_encode_hdr_maxsz + \
185 encode_putfh_maxsz + \
186 op_encode_hdr_maxsz + 5)
187#define NFS4_dec_open_confirm_sz (compound_decode_hdr_maxsz + \
188 decode_putfh_maxsz + \
189 op_decode_hdr_maxsz + 4)
190#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
191 encode_putfh_maxsz + \
192 op_encode_hdr_maxsz + \
193 11)
194#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
195 decode_putfh_maxsz + \
196 op_decode_hdr_maxsz + \
197 4 + 5 + 2 + 3)
198#define NFS4_enc_open_downgrade_sz \
199 (compound_encode_hdr_maxsz + \
200 encode_putfh_maxsz + \
516a6af6
TM		 201 op_encode_hdr_maxsz + 7 + \
202 encode_getattr_maxsz)
1da177e4
LT		 203#define NFS4_dec_open_downgrade_sz \
204 (compound_decode_hdr_maxsz + \
205 decode_putfh_maxsz + \
516a6af6
TM		 206 op_decode_hdr_maxsz + 4 + \
207 decode_getattr_maxsz)
1da177e4
LT		 208#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
209 encode_putfh_maxsz + \
516a6af6
TM		 210 op_encode_hdr_maxsz + 5 + \
211 encode_getattr_maxsz)
1da177e4
LT		 212#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
213 decode_putfh_maxsz + \
516a6af6
TM		 214 op_decode_hdr_maxsz + 4 + \
215 decode_getattr_maxsz)
1da177e4
LT		 216#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
217 encode_putfh_maxsz + \
218 op_encode_hdr_maxsz + 4 + \
96928206 219 nfs4_fattr_maxsz + \
1da177e4
LT		 220 encode_getattr_maxsz)
221#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
222 decode_putfh_maxsz + \
223 op_decode_hdr_maxsz + 3)
224#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
225 encode_putfh_maxsz + \
226 encode_fsinfo_maxsz)
227#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
228 decode_putfh_maxsz + \
229 decode_fsinfo_maxsz)
230#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
231 encode_renew_maxsz)
232#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
233 decode_renew_maxsz)
234#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
235 encode_setclientid_maxsz)
236#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
237 decode_setclientid_maxsz)
238#define NFS4_enc_setclientid_confirm_sz \
239 (compound_encode_hdr_maxsz + \
240 encode_setclientid_confirm_maxsz + \
241 encode_putrootfh_maxsz + \
242 encode_fsinfo_maxsz)
243#define NFS4_dec_setclientid_confirm_sz \
244 (compound_decode_hdr_maxsz + \
245 decode_setclientid_confirm_maxsz + \
246 decode_putrootfh_maxsz + \
247 decode_fsinfo_maxsz)
248#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
249 encode_putfh_maxsz + \
250 encode_getattr_maxsz + \
251 op_encode_hdr_maxsz + \
252 1 + 1 + 2 + 2 + \
253 1 + 4 + 1 + 2 + \
254 owner_id_maxsz)
255#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
256 decode_putfh_maxsz + \
257 decode_getattr_maxsz + \
258 op_decode_hdr_maxsz + \
259 2 + 2 + 1 + 2 + \
260 owner_id_maxsz)
261#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
262 encode_putfh_maxsz + \
263 encode_getattr_maxsz + \
264 op_encode_hdr_maxsz + \
265 1 + 2 + 2 + 2 + \
266 owner_id_maxsz)
267#define NFS4_dec_lockt_sz (NFS4_dec_lock_sz)
268#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
269 encode_putfh_maxsz + \
270 encode_getattr_maxsz + \
271 op_encode_hdr_maxsz + \
272 1 + 1 + 4 + 2 + 2)
273#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
274 decode_putfh_maxsz + \
275 decode_getattr_maxsz + \
276 op_decode_hdr_maxsz + 4)
277#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
278 encode_putfh_maxsz + \
279 op_encode_hdr_maxsz + 1)
280#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
281 decode_putfh_maxsz + \
282 op_decode_hdr_maxsz + 2)
283#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
284 encode_putfh_maxsz + \
285 encode_getattr_maxsz)
286#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
287 decode_putfh_maxsz + \
288 decode_getattr_maxsz)
289#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
290 encode_putfh_maxsz + \
291 encode_lookup_maxsz + \
292 encode_getattr_maxsz + \
293 encode_getfh_maxsz)
294#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
295 decode_putfh_maxsz + \
296 op_decode_hdr_maxsz + \
297 decode_getattr_maxsz + \
298 decode_getfh_maxsz)
299#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
300 encode_putrootfh_maxsz + \
301 encode_getattr_maxsz + \
302 encode_getfh_maxsz)
303#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
304 decode_putrootfh_maxsz + \
305 decode_getattr_maxsz + \
306 decode_getfh_maxsz)
307#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
308 encode_putfh_maxsz + \
309 encode_remove_maxsz)
310#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
311 decode_putfh_maxsz + \
312 op_decode_hdr_maxsz + 5)
313#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
314 encode_putfh_maxsz + \
315 encode_savefh_maxsz + \
316 encode_putfh_maxsz + \
317 encode_rename_maxsz)
318#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
319 decode_putfh_maxsz + \
320 decode_savefh_maxsz + \
321 decode_putfh_maxsz + \
322 decode_rename_maxsz)
323#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
324 encode_putfh_maxsz + \
325 encode_savefh_maxsz + \
326 encode_putfh_maxsz + \
91ba2eee
TM		 327 encode_link_maxsz + \
328 decode_getattr_maxsz + \
329 encode_restorefh_maxsz + \
330 decode_getattr_maxsz)
1da177e4
LT		 331#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
332 decode_putfh_maxsz + \
333 decode_savefh_maxsz + \
334 decode_putfh_maxsz + \
91ba2eee
TM		 335 decode_link_maxsz + \
336 decode_getattr_maxsz + \
337 decode_restorefh_maxsz + \
338 decode_getattr_maxsz)
1da177e4
LT		 339#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
340 encode_putfh_maxsz + \
341 encode_symlink_maxsz + \
342 encode_getattr_maxsz + \
343 encode_getfh_maxsz)
344#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
345 decode_putfh_maxsz + \
346 decode_symlink_maxsz + \
347 decode_getattr_maxsz + \
348 decode_getfh_maxsz)
349#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
350 encode_putfh_maxsz + \
56ae19f3 351 encode_savefh_maxsz + \
1da177e4 352 encode_create_maxsz + \
56ae19f3 353 encode_getfh_maxsz + \
1da177e4 354 encode_getattr_maxsz + \
56ae19f3
TM		 355 encode_restorefh_maxsz + \
356 encode_getattr_maxsz)
1da177e4
LT		 357#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
358 decode_putfh_maxsz + \
56ae19f3 359 decode_savefh_maxsz + \
1da177e4 360 decode_create_maxsz + \
56ae19f3 361 decode_getfh_maxsz + \
1da177e4 362 decode_getattr_maxsz + \
56ae19f3
TM		 363 decode_restorefh_maxsz + \
364 decode_getattr_maxsz)
1da177e4
LT		 365#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
366 encode_putfh_maxsz + \
367 encode_getattr_maxsz)
368#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
369 decode_putfh_maxsz + \
370 decode_getattr_maxsz)
371#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
372 encode_putfh_maxsz + \
373 encode_getattr_maxsz)
374#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
375 decode_putfh_maxsz + \
376 op_decode_hdr_maxsz + 12)
377#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
378 encode_getattr_maxsz)
379#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
380 decode_getattr_maxsz)
381#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
382 encode_putfh_maxsz + \
383 encode_delegreturn_maxsz)
384#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
385 decode_delegreturn_maxsz)
029d105e
BF		 386#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
387 encode_putfh_maxsz + \
388 encode_getattr_maxsz)
389#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
390 decode_putfh_maxsz + \
391 op_decode_hdr_maxsz + \
392 nfs4_fattr_bitmap_maxsz + 1)
23ec6965
BF		 393#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
394 encode_putfh_maxsz + \
395 op_encode_hdr_maxsz + 4 + \
396 nfs4_fattr_bitmap_maxsz + 1)
397#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
398 decode_putfh_maxsz + \
399 op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
1da177e4
LT		 400
401static struct {
402 unsigned int mode;
403 unsigned int nfs2type;
404} nfs_type2fmt[] = {
405 { 0, NFNON },
406 { S_IFREG, NFREG },
407 { S_IFDIR, NFDIR },
408 { S_IFBLK, NFBLK },
409 { S_IFCHR, NFCHR },
410 { S_IFLNK, NFLNK },
411 { S_IFSOCK, NFSOCK },
412 { S_IFIFO, NFFIFO },
413 { 0, NFNON },
414 { 0, NFNON },
415};
416
417struct compound_hdr {
418 int32_t status;
419 uint32_t nops;
420 uint32_t taglen;
421 char * tag;
422};
423
424/*
425 * START OF "GENERIC" ENCODE ROUTINES.
426 * These may look a little ugly since they are imported from a "generic"
427 * set of XDR encode/decode routines which are intended to be shared by
428 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
429 *
430 * If the pain of reading these is too great, it should be a straightforward
431 * task to translate them into Linux-specific versions which are more
432 * consistent with the style used in NFSv2/v3...
433 */
434#define WRITE32(n) *p++ = htonl(n)
435#define WRITE64(n) do { \
436 *p++ = htonl((uint32_t)((n) >> 32)); \
437 *p++ = htonl((uint32_t)(n)); \
438} while (0)
439#define WRITEMEM(ptr,nbytes) do { \
440 p = xdr_encode_opaque_fixed(p, ptr, nbytes); \
441} while (0)
442
443#define RESERVE_SPACE(nbytes) do { \
444 p = xdr_reserve_space(xdr, nbytes); \
445 if (!p) printk("RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __FUNCTION__); \
446 BUG_ON(!p); \
447} while (0)
448
449static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
450{
451 uint32_t *p;
452
453 p = xdr_reserve_space(xdr, 4 + len);
454 BUG_ON(p == NULL);
455 xdr_encode_opaque(p, str, len);
456}
457
458static int encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
459{
460 uint32_t *p;
461
462 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
463 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
464 RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
465 WRITE32(hdr->taglen);
466 WRITEMEM(hdr->tag, hdr->taglen);
467 WRITE32(NFS4_MINOR_VERSION);
468 WRITE32(hdr->nops);
469 return 0;
470}
471
472static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
473{
474 uint32_t *p;
475
476 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
477 BUG_ON(p == NULL);
478 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
479}
480
481static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
482{
483 char owner_name[IDMAP_NAMESZ];
484 char owner_group[IDMAP_NAMESZ];
485 int owner_namelen = 0;
486 int owner_grouplen = 0;
487 uint32_t *p;
488 uint32_t *q;
489 int len;
490 uint32_t bmval0 = 0;
491 uint32_t bmval1 = 0;
492 int status;
493
494 /*
495 * We reserve enough space to write the entire attribute buffer at once.
496 * In the worst-case, this would be
497 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
498 * = 36 bytes, plus any contribution from variable-length fields
23ec6965 499 * such as owner/group.
1da177e4
LT		 500 */
501 len = 16;
502
503 /* Sigh */
504 if (iap->ia_valid & ATTR_SIZE)
505 len += 8;
506 if (iap->ia_valid & ATTR_MODE)
507 len += 4;
508 if (iap->ia_valid & ATTR_UID) {
509 owner_namelen = nfs_map_uid_to_name(server->nfs4_state, iap->ia_uid, owner_name);
510 if (owner_namelen < 0) {
511 printk(KERN_WARNING "nfs: couldn't resolve uid %d to string\n",
512 iap->ia_uid);
513 /* XXX */
514 strcpy(owner_name, "nobody");
515 owner_namelen = sizeof("nobody") - 1;
516 /* goto out; */
517 }
518 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
519 }
520 if (iap->ia_valid & ATTR_GID) {
521 owner_grouplen = nfs_map_gid_to_group(server->nfs4_state, iap->ia_gid, owner_group);
522 if (owner_grouplen < 0) {
523 printk(KERN_WARNING "nfs4: couldn't resolve gid %d to string\n",
524 iap->ia_gid);
525 strcpy(owner_group, "nobody");
526 owner_grouplen = sizeof("nobody") - 1;
527 /* goto out; */
528 }
529 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
530 }
531 if (iap->ia_valid & ATTR_ATIME_SET)
532 len += 16;
533 else if (iap->ia_valid & ATTR_ATIME)
534 len += 4;
535 if (iap->ia_valid & ATTR_MTIME_SET)
536 len += 16;
537 else if (iap->ia_valid & ATTR_MTIME)
538 len += 4;
539 RESERVE_SPACE(len);
540
541 /*
542 * We write the bitmap length now, but leave the bitmap and the attribute
543 * buffer length to be backfilled at the end of this routine.
544 */
545 WRITE32(2);
546 q = p;
547 p += 3;
548
549 if (iap->ia_valid & ATTR_SIZE) {
550 bmval0 |= FATTR4_WORD0_SIZE;
551 WRITE64(iap->ia_size);
552 }
553 if (iap->ia_valid & ATTR_MODE) {
554 bmval1 |= FATTR4_WORD1_MODE;
555 WRITE32(iap->ia_mode);
556 }
557 if (iap->ia_valid & ATTR_UID) {
558 bmval1 |= FATTR4_WORD1_OWNER;
559 WRITE32(owner_namelen);
560 WRITEMEM(owner_name, owner_namelen);
561 }
562 if (iap->ia_valid & ATTR_GID) {
563 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
564 WRITE32(owner_grouplen);
565 WRITEMEM(owner_group, owner_grouplen);
566 }
567 if (iap->ia_valid & ATTR_ATIME_SET) {
568 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
569 WRITE32(NFS4_SET_TO_CLIENT_TIME);
570 WRITE32(0);
571 WRITE32(iap->ia_mtime.tv_sec);
572 WRITE32(iap->ia_mtime.tv_nsec);
573 }
574 else if (iap->ia_valid & ATTR_ATIME) {
575 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
576 WRITE32(NFS4_SET_TO_SERVER_TIME);
577 }
578 if (iap->ia_valid & ATTR_MTIME_SET) {
579 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
580 WRITE32(NFS4_SET_TO_CLIENT_TIME);
581 WRITE32(0);
582 WRITE32(iap->ia_mtime.tv_sec);
583 WRITE32(iap->ia_mtime.tv_nsec);
584 }
585 else if (iap->ia_valid & ATTR_MTIME) {
586 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
587 WRITE32(NFS4_SET_TO_SERVER_TIME);
588 }
589
590 /*
591 * Now we backfill the bitmap and the attribute buffer length.
592 */
593 if (len != ((char *)p - (char *)q) + 4) {
594 printk ("encode_attr: Attr length calculation error! %u != %Zu\n",
595 len, ((char *)p - (char *)q) + 4);
596 BUG();
597 }
598 len = (char *)p - (char *)q - 12;
599 *q++ = htonl(bmval0);
600 *q++ = htonl(bmval1);
601 *q++ = htonl(len);
602
603 status = 0;
604/* out: */
605 return status;
606}
607
608static int encode_access(struct xdr_stream *xdr, u32 access)
609{
610 uint32_t *p;
611
612 RESERVE_SPACE(8);
613 WRITE32(OP_ACCESS);
614 WRITE32(access);
615
616 return 0;
617}
618
619static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
620{
621 uint32_t *p;
622
9512135d 623 RESERVE_SPACE(8+sizeof(arg->stateid->data));
1da177e4 624 WRITE32(OP_CLOSE);
cee54fc9 625 WRITE32(arg->seqid->sequence->counter);
9512135d 626 WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
1da177e4
LT		 627
628 return 0;
629}
630
631static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args)
632{
633 uint32_t *p;
634
635 RESERVE_SPACE(16);
636 WRITE32(OP_COMMIT);
637 WRITE64(args->offset);
638 WRITE32(args->count);
639
640 return 0;
641}
642
643static int encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create)
644{
645 uint32_t *p;
646
647 RESERVE_SPACE(8);
648 WRITE32(OP_CREATE);
649 WRITE32(create->ftype);
650
651 switch (create->ftype) {
652 case NF4LNK:
653 RESERVE_SPACE(4 + create->u.symlink->len);
654 WRITE32(create->u.symlink->len);
655 WRITEMEM(create->u.symlink->name, create->u.symlink->len);
656 break;
657
658 case NF4BLK: case NF4CHR:
659 RESERVE_SPACE(8);
660 WRITE32(create->u.device.specdata1);
661 WRITE32(create->u.device.specdata2);
662 break;
663
664 default:
665 break;
666 }
667
668 RESERVE_SPACE(4 + create->name->len);
669 WRITE32(create->name->len);
670 WRITEMEM(create->name->name, create->name->len);
671
672 return encode_attrs(xdr, create->attrs, create->server);
673}
674
675static int encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap)
676{
677 uint32_t *p;
678
679 RESERVE_SPACE(12);
680 WRITE32(OP_GETATTR);
681 WRITE32(1);
682 WRITE32(bitmap);
683 return 0;
684}
685
686static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1)
687{
688 uint32_t *p;
689
690 RESERVE_SPACE(16);
691 WRITE32(OP_GETATTR);
692 WRITE32(2);
693 WRITE32(bm0);
694 WRITE32(bm1);
695 return 0;
696}
697
698static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
699{
1da177e4
LT		 700 return encode_getattr_two(xdr,
701 bitmask[0] & nfs4_fattr_bitmap[0],
702 bitmask[1] & nfs4_fattr_bitmap[1]);
703}
704
705static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask)
706{
1da177e4
LT		 707 return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
708 bitmask[1] & nfs4_fsinfo_bitmap[1]);
709}
710
711static int encode_getfh(struct xdr_stream *xdr)
712{
713 uint32_t *p;
714
715 RESERVE_SPACE(4);
716 WRITE32(OP_GETFH);
717
718 return 0;
719}
720
721static int encode_link(struct xdr_stream *xdr, const struct qstr *name)
722{
723 uint32_t *p;
724
725 RESERVE_SPACE(8 + name->len);
726 WRITE32(OP_LINK);
727 WRITE32(name->len);
728 WRITEMEM(name->name, name->len);
729
730 return 0;
731}
732
733/*
734 * opcode,type,reclaim,offset,length,new_lock_owner = 32
735 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
736 */
737static int encode_lock(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
738{
739 uint32_t *p;
740 struct nfs_lock_opargs *opargs = arg->u.lock;
741
742 RESERVE_SPACE(32);
743 WRITE32(OP_LOCK);
744 WRITE32(arg->type);
745 WRITE32(opargs->reclaim);
746 WRITE64(arg->offset);
747 WRITE64(arg->length);
748 WRITE32(opargs->new_lock_owner);
749 if (opargs->new_lock_owner){
1da177e4 750 RESERVE_SPACE(40);
06735b34
TM		 751 WRITE32(opargs->open_seqid->sequence->counter);
752 WRITEMEM(opargs->open_stateid->data, sizeof(opargs->open_stateid->data));
753 WRITE32(opargs->lock_seqid->sequence->counter);
754 WRITE64(opargs->lock_owner.clientid);
1da177e4 755 WRITE32(4);
06735b34 756 WRITE32(opargs->lock_owner.id);
1da177e4
LT		 757 }
758 else {
1da177e4 759 RESERVE_SPACE(20);
06735b34
TM		 760 WRITEMEM(opargs->lock_stateid->data, sizeof(opargs->lock_stateid->data));
761 WRITE32(opargs->lock_seqid->sequence->counter);
1da177e4
LT		 762 }
763
764 return 0;
765}
766
767static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
768{
769 uint32_t *p;
770 struct nfs_lowner *opargs = arg->u.lockt;
771
772 RESERVE_SPACE(40);
773 WRITE32(OP_LOCKT);
774 WRITE32(arg->type);
775 WRITE64(arg->offset);
776 WRITE64(arg->length);
777 WRITE64(opargs->clientid);
778 WRITE32(4);
779 WRITE32(opargs->id);
780
781 return 0;
782}
783
784static int encode_locku(struct xdr_stream *xdr, const struct nfs_lockargs *arg)
785{
786 uint32_t *p;
787 struct nfs_locku_opargs *opargs = arg->u.locku;
788
789 RESERVE_SPACE(44);
790 WRITE32(OP_LOCKU);
791 WRITE32(arg->type);
cee54fc9 792 WRITE32(opargs->seqid->sequence->counter);
faf5f49c 793 WRITEMEM(opargs->stateid->data, sizeof(opargs->stateid->data));
1da177e4
LT		 794 WRITE64(arg->offset);
795 WRITE64(arg->length);
796
797 return 0;
798}
799
800static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name)
801{
802 int len = name->len;
803 uint32_t *p;
804
805 RESERVE_SPACE(8 + len);
806 WRITE32(OP_LOOKUP);
807 WRITE32(len);
808 WRITEMEM(name->name, len);
809
810 return 0;
811}
812
813static void encode_share_access(struct xdr_stream *xdr, int open_flags)
814{
815 uint32_t *p;
816
817 RESERVE_SPACE(8);
818 switch (open_flags & (FMODE_READ|FMODE_WRITE)) {
819 case FMODE_READ:
820 WRITE32(NFS4_SHARE_ACCESS_READ);
821 break;
822 case FMODE_WRITE:
823 WRITE32(NFS4_SHARE_ACCESS_WRITE);
824 break;
825 case FMODE_READ|FMODE_WRITE:
826 WRITE32(NFS4_SHARE_ACCESS_BOTH);
827 break;
828 default:
829 BUG();
830 }
831 WRITE32(0); /* for linux, share_deny = 0 always */
832}
833
834static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
835{
836 uint32_t *p;
837 /*
838 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
839 * owner 4 = 32
840 */
841 RESERVE_SPACE(8);
842 WRITE32(OP_OPEN);
cee54fc9 843 WRITE32(arg->seqid->sequence->counter);
1da177e4
LT		 844 encode_share_access(xdr, arg->open_flags);
845 RESERVE_SPACE(16);
846 WRITE64(arg->clientid);
847 WRITE32(4);
848 WRITE32(arg->id);
849}
850
851static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
852{
853 uint32_t *p;
854
855 RESERVE_SPACE(4);
856 switch(arg->open_flags & O_EXCL) {
857 case 0:
858 WRITE32(NFS4_CREATE_UNCHECKED);
859 encode_attrs(xdr, arg->u.attrs, arg->server);
860 break;
861 default:
862 WRITE32(NFS4_CREATE_EXCLUSIVE);
863 encode_nfs4_verifier(xdr, &arg->u.verifier);
864 }
865}
866
867static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
868{
869 uint32_t *p;
870
871 RESERVE_SPACE(4);
872 switch (arg->open_flags & O_CREAT) {
873 case 0:
874 WRITE32(NFS4_OPEN_NOCREATE);
875 break;
876 default:
877 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
878 WRITE32(NFS4_OPEN_CREATE);
879 encode_createmode(xdr, arg);
880 }
881}
882
883static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type)
884{
885 uint32_t *p;
886
887 RESERVE_SPACE(4);
888 switch (delegation_type) {
889 case 0:
890 WRITE32(NFS4_OPEN_DELEGATE_NONE);
891 break;
892 case FMODE_READ:
893 WRITE32(NFS4_OPEN_DELEGATE_READ);
894 break;
895 case FMODE_WRITE|FMODE_READ:
896 WRITE32(NFS4_OPEN_DELEGATE_WRITE);
897 break;
898 default:
899 BUG();
900 }
901}
902
903static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
904{
905 uint32_t *p;
906
907 RESERVE_SPACE(4);
908 WRITE32(NFS4_OPEN_CLAIM_NULL);
909 encode_string(xdr, name->len, name->name);
910}
911
912static inline void encode_claim_previous(struct xdr_stream *xdr, int type)
913{
914 uint32_t *p;
915
916 RESERVE_SPACE(4);
917 WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
918 encode_delegation_type(xdr, type);
919}
920
921static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
922{
923 uint32_t *p;
924
925 RESERVE_SPACE(4+sizeof(stateid->data));
926 WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
927 WRITEMEM(stateid->data, sizeof(stateid->data));
928 encode_string(xdr, name->len, name->name);
929}
930
931static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg)
932{
933 encode_openhdr(xdr, arg);
934 encode_opentype(xdr, arg);
935 switch (arg->claim) {
936 case NFS4_OPEN_CLAIM_NULL:
937 encode_claim_null(xdr, arg->name);
938 break;
939 case NFS4_OPEN_CLAIM_PREVIOUS:
940 encode_claim_previous(xdr, arg->u.delegation_type);
941 break;
942 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
943 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
944 break;
945 default:
946 BUG();
947 }
948 return 0;
949}
950
951static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg)
952{
953 uint32_t *p;
954
955 RESERVE_SPACE(8+sizeof(arg->stateid.data));
956 WRITE32(OP_OPEN_CONFIRM);
957 WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
cee54fc9 958 WRITE32(arg->seqid->sequence->counter);
1da177e4
LT		 959
960 return 0;
961}
962
963static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
964{
965 uint32_t *p;
966
9512135d 967 RESERVE_SPACE(8+sizeof(arg->stateid->data));
1da177e4 968 WRITE32(OP_OPEN_DOWNGRADE);
9512135d 969 WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
cee54fc9 970 WRITE32(arg->seqid->sequence->counter);
1da177e4
LT		 971 encode_share_access(xdr, arg->open_flags);
972 return 0;
973}
974
975static int
976encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh)
977{
978 int len = fh->size;
979 uint32_t *p;
980
981 RESERVE_SPACE(8 + len);
982 WRITE32(OP_PUTFH);
983 WRITE32(len);
984 WRITEMEM(fh->data, len);
985
986 return 0;
987}
988
989static int encode_putrootfh(struct xdr_stream *xdr)
990{
991 uint32_t *p;
992
993 RESERVE_SPACE(4);
994 WRITE32(OP_PUTROOTFH);
995
996 return 0;
997}
998
999static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
1000{
1da177e4
LT		 1001 nfs4_stateid stateid;
1002 uint32_t *p;
1003
1004 RESERVE_SPACE(16);
1005 if (ctx->state != NULL) {
1006 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
1007 WRITEMEM(stateid.data, sizeof(stateid.data));
1008 } else
1009 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
1010}
1011
1012static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
1013{
1014 uint32_t *p;
1015
1016 RESERVE_SPACE(4);
1017 WRITE32(OP_READ);
1018
1019 encode_stateid(xdr, args->context);
1020
1021 RESERVE_SPACE(12);
1022 WRITE64(args->offset);
1023 WRITE32(args->count);
1024
1025 return 0;
1026}
1027
1028static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req)
1029{
1030 struct rpc_auth *auth = req->rq_task->tk_auth;
97d312d0
MN		 1031 uint32_t attrs[2] = {
1032 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1033 FATTR4_WORD1_MOUNTED_ON_FILEID,
1034 };
1da177e4
LT		 1035 int replen;
1036 uint32_t *p;
1037
1038 RESERVE_SPACE(32+sizeof(nfs4_verifier));
1039 WRITE32(OP_READDIR);
1040 WRITE64(readdir->cookie);
1041 WRITEMEM(readdir->verifier.data, sizeof(readdir->verifier.data));
1042 WRITE32(readdir->count >> 1); /* We're not doing readdirplus */
1043 WRITE32(readdir->count);
1044 WRITE32(2);
97d312d0
MN		 1045 /* Switch to mounted_on_fileid if the server supports it */
1046 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1047 attrs[0] &= ~FATTR4_WORD0_FILEID;
1048 else
1049 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1050 WRITE32(attrs[0] & readdir->bitmask[0]);
1051 WRITE32(attrs[1] & readdir->bitmask[1]);
eadf4598
TM		 1052 dprintk("%s: cookie = %Lu, verifier = 0x%x%x, bitmap = 0x%x%x\n",
1053 __FUNCTION__,
1054 (unsigned long long)readdir->cookie,
1055 ((u32 *)readdir->verifier.data)[0],
1056 ((u32 *)readdir->verifier.data)[1],
1057 attrs[0] & readdir->bitmask[0],
1058 attrs[1] & readdir->bitmask[1]);
1da177e4
LT		 1059
1060 /* set up reply kvec
1061 * toplevel_status + taglen + rescount + OP_PUTFH + status
1062 * + OP_READDIR + status + verifer(2) = 9
1063 */
1064 replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2;
1065 xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages,
1066 readdir->pgbase, readdir->count);
eadf4598
TM		 1067 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
1068 __FUNCTION__, replen, readdir->pages,
1069 readdir->pgbase, readdir->count);
1da177e4
LT		 1070
1071 return 0;
1072}
1073
1074static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req)
1075{
1076 struct rpc_auth *auth = req->rq_task->tk_auth;
1077 unsigned int replen;
1078 uint32_t *p;
1079
1080 RESERVE_SPACE(4);
1081 WRITE32(OP_READLINK);
1082
1083 /* set up reply kvec
1084 * toplevel_status + taglen + rescount + OP_PUTFH + status
1085 * + OP_READLINK + status + string length = 8
1086 */
1087 replen = (RPC_REPHDRSIZE + auth->au_rslack + 8) << 2;
1088 xdr_inline_pages(&req->rq_rcv_buf, replen, readlink->pages,
1089 readlink->pgbase, readlink->pglen);
1090
1091 return 0;
1092}
1093
1094static int encode_remove(struct xdr_stream *xdr, const struct qstr *name)
1095{
1096 uint32_t *p;
1097
1098 RESERVE_SPACE(8 + name->len);
1099 WRITE32(OP_REMOVE);
1100 WRITE32(name->len);
1101 WRITEMEM(name->name, name->len);
1102
1103 return 0;
1104}
1105
1106static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname)
1107{
1108 uint32_t *p;
1109
1110 RESERVE_SPACE(8 + oldname->len);
1111 WRITE32(OP_RENAME);
1112 WRITE32(oldname->len);
1113 WRITEMEM(oldname->name, oldname->len);
1114
1115 RESERVE_SPACE(4 + newname->len);
1116 WRITE32(newname->len);
1117 WRITEMEM(newname->name, newname->len);
1118
1119 return 0;
1120}
1121
1122static int encode_renew(struct xdr_stream *xdr, const struct nfs4_client *client_stateid)
1123{
1124 uint32_t *p;
1125
1126 RESERVE_SPACE(12);
1127 WRITE32(OP_RENEW);
1128 WRITE64(client_stateid->cl_clientid);
1129
1130 return 0;
1131}
1132
56ae19f3
TM		 1133static int
1134encode_restorefh(struct xdr_stream *xdr)
1135{
1136 uint32_t *p;
1137
1138 RESERVE_SPACE(4);
1139 WRITE32(OP_RESTOREFH);
1140
1141 return 0;
1142}
1143
23ec6965
BF		 1144static int
1145encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg)
1146{
1147 uint32_t *p;
1148
1149 RESERVE_SPACE(4+sizeof(zero_stateid.data));
1150 WRITE32(OP_SETATTR);
1151 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
1152 RESERVE_SPACE(2*4);
1153 WRITE32(1);
1154 WRITE32(FATTR4_WORD0_ACL);
1155 if (arg->acl_len % 4)
1156 return -EINVAL;
1157 RESERVE_SPACE(4);
1158 WRITE32(arg->acl_len);
1159 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1160 return 0;
1161}
1162
1da177e4
LT		 1163static int
1164encode_savefh(struct xdr_stream *xdr)
1165{
1166 uint32_t *p;
1167
1168 RESERVE_SPACE(4);
1169 WRITE32(OP_SAVEFH);
1170
1171 return 0;
1172}
1173
1174static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server)
1175{
1176 int status;
1177 uint32_t *p;
1178
1179 RESERVE_SPACE(4+sizeof(arg->stateid.data));
1180 WRITE32(OP_SETATTR);
1181 WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
1182
1183 if ((status = encode_attrs(xdr, arg->iap, server)))
1184 return status;
1185
1186 return 0;
1187}
1188
1189static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid)
1190{
1191 uint32_t *p;
1192
1193 RESERVE_SPACE(4 + sizeof(setclientid->sc_verifier->data));
1194 WRITE32(OP_SETCLIENTID);
1195 WRITEMEM(setclientid->sc_verifier->data, sizeof(setclientid->sc_verifier->data));
1196
1197 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1198 RESERVE_SPACE(4);
1199 WRITE32(setclientid->sc_prog);
1200 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1201 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1202 RESERVE_SPACE(4);
1203 WRITE32(setclientid->sc_cb_ident);
1204
1205 return 0;
1206}
1207
1208static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_client *client_state)
1209{
1210 uint32_t *p;
1211
1212 RESERVE_SPACE(12 + sizeof(client_state->cl_confirm.data));
1213 WRITE32(OP_SETCLIENTID_CONFIRM);
1214 WRITE64(client_state->cl_clientid);
1215 WRITEMEM(client_state->cl_confirm.data, sizeof(client_state->cl_confirm.data));
1216
1217 return 0;
1218}
1219
1220static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args)
1221{
1222 uint32_t *p;
1223
1224 RESERVE_SPACE(4);
1225 WRITE32(OP_WRITE);
1226
1227 encode_stateid(xdr, args->context);
1228
1229 RESERVE_SPACE(16);
1230 WRITE64(args->offset);
1231 WRITE32(args->stable);
1232 WRITE32(args->count);
1233
1234 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1235
1236 return 0;
1237}
1238
1239static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1240{
1241 uint32_t *p;
1242
1243 RESERVE_SPACE(20);
1244
1245 WRITE32(OP_DELEGRETURN);
1246 WRITEMEM(stateid->data, sizeof(stateid->data));
1247 return 0;
1248
1249}
1250/*
1251 * END OF "GENERIC" ENCODE ROUTINES.
1252 */
1253
1254/*
1255 * Encode an ACCESS request
1256 */
1257static int nfs4_xdr_enc_access(struct rpc_rqst *req, uint32_t *p, const struct nfs4_accessargs *args)
1258{
1259 struct xdr_stream xdr;
1260 struct compound_hdr hdr = {
1261 .nops = 2,
1262 };
1263 int status;
1264
1265 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1266 encode_compound_hdr(&xdr, &hdr);
1267 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1268 status = encode_access(&xdr, args->access);
1269 return status;
1270}
1271
1272/*
1273 * Encode LOOKUP request
1274 */
1275static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_arg *args)
1276{
1277 struct xdr_stream xdr;
1278 struct compound_hdr hdr = {
1279 .nops = 4,
1280 };
1281 int status;
1282
1283 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1284 encode_compound_hdr(&xdr, &hdr);
1285 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1286 goto out;
1287 if ((status = encode_lookup(&xdr, args->name)) != 0)
1288 goto out;
1289 if ((status = encode_getfh(&xdr)) != 0)
1290 goto out;
1291 status = encode_getfattr(&xdr, args->bitmask);
1292out:
1293 return status;
1294}
1295
1296/*
1297 * Encode LOOKUP_ROOT request
1298 */
1299static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_root_arg *args)
1300{
1301 struct xdr_stream xdr;
1302 struct compound_hdr hdr = {
1303 .nops = 3,
1304 };
1305 int status;
1306
1307 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1308 encode_compound_hdr(&xdr, &hdr);
1309 if ((status = encode_putrootfh(&xdr)) != 0)
1310 goto out;
1311 if ((status = encode_getfh(&xdr)) == 0)
1312 status = encode_getfattr(&xdr, args->bitmask);
1313out:
1314 return status;
1315}
1316
1317/*
1318 * Encode REMOVE request
1319 */
1320static int nfs4_xdr_enc_remove(struct rpc_rqst *req, uint32_t *p, const struct nfs4_remove_arg *args)
1321{
1322 struct xdr_stream xdr;
1323 struct compound_hdr hdr = {
1324 .nops = 2,
1325 };
1326 int status;
1327
1328 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1329 encode_compound_hdr(&xdr, &hdr);
1330 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1331 status = encode_remove(&xdr, args->name);
1332 return status;
1333}
1334
1335/*
1336 * Encode RENAME request
1337 */
1338static int nfs4_xdr_enc_rename(struct rpc_rqst *req, uint32_t *p, const struct nfs4_rename_arg *args)
1339{
1340 struct xdr_stream xdr;
1341 struct compound_hdr hdr = {
1342 .nops = 4,
1343 };
1344 int status;
1345
1346 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1347 encode_compound_hdr(&xdr, &hdr);
1348 if ((status = encode_putfh(&xdr, args->old_dir)) != 0)
1349 goto out;
1350 if ((status = encode_savefh(&xdr)) != 0)
1351 goto out;
1352 if ((status = encode_putfh(&xdr, args->new_dir)) != 0)
1353 goto out;
1354 status = encode_rename(&xdr, args->old_name, args->new_name);
1355out:
1356 return status;
1357}
1358
1359/*
1360 * Encode LINK request
1361 */
1362static int nfs4_xdr_enc_link(struct rpc_rqst *req, uint32_t *p, const struct nfs4_link_arg *args)
1363{
1364 struct xdr_stream xdr;
1365 struct compound_hdr hdr = {
91ba2eee 1366 .nops = 7,
1da177e4
LT		 1367 };
1368 int status;
1369
1370 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1371 encode_compound_hdr(&xdr, &hdr);
1372 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1373 goto out;
1374 if ((status = encode_savefh(&xdr)) != 0)
1375 goto out;
1376 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1377 goto out;
91ba2eee
TM		 1378 if ((status = encode_link(&xdr, args->name)) != 0)
1379 goto out;
1380 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1381 goto out;
1382 if ((status = encode_restorefh(&xdr)) != 0)
1383 goto out;
1384 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1385out:
1386 return status;
1387}
1388
1389/*
1390 * Encode CREATE request
1391 */
1392static int nfs4_xdr_enc_create(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1393{
1394 struct xdr_stream xdr;
1395 struct compound_hdr hdr = {
56ae19f3 1396 .nops = 7,
1da177e4
LT		 1397 };
1398 int status;
1399
1400 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1401 encode_compound_hdr(&xdr, &hdr);
1402 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1403 goto out;
56ae19f3
TM		 1404 if ((status = encode_savefh(&xdr)) != 0)
1405 goto out;
1da177e4
LT		 1406 if ((status = encode_create(&xdr, args)) != 0)
1407 goto out;
1408 if ((status = encode_getfh(&xdr)) != 0)
1409 goto out;
56ae19f3
TM		 1410 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1411 goto out;
1412 if ((status = encode_restorefh(&xdr)) != 0)
1413 goto out;
1da177e4
LT		 1414 status = encode_getfattr(&xdr, args->bitmask);
1415out:
1416 return status;
1417}
1418
1419/*
1420 * Encode SYMLINK request
1421 */
1422static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1423{
1424 return nfs4_xdr_enc_create(req, p, args);
1425}
1426
1427/*
1428 * Encode GETATTR request
1429 */
1430static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, uint32_t *p, const struct nfs4_getattr_arg *args)
1431{
1432 struct xdr_stream xdr;
1433 struct compound_hdr hdr = {
1434 .nops = 2,
1435 };
1436 int status;
1437
1438 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1439 encode_compound_hdr(&xdr, &hdr);
1440 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1441 status = encode_getfattr(&xdr, args->bitmask);
1442 return status;
1443}
1444
1445/*
1446 * Encode a CLOSE request
1447 */
1448static int nfs4_xdr_enc_close(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1449{
1450 struct xdr_stream xdr;
1451 struct compound_hdr hdr = {
516a6af6 1452 .nops = 3,
1da177e4
LT		 1453 };
1454 int status;
1455
1456 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1457 encode_compound_hdr(&xdr, &hdr);
1458 status = encode_putfh(&xdr, args->fh);
1459 if(status)
1460 goto out;
1461 status = encode_close(&xdr, args);
516a6af6
TM		 1462 if (status != 0)
1463 goto out;
1464 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1465out:
1466 return status;
1467}
1468
1469/*
1470 * Encode an OPEN request
1471 */
1472static int nfs4_xdr_enc_open(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1473{
1474 struct xdr_stream xdr;
1475 struct compound_hdr hdr = {
56ae19f3 1476 .nops = 7,
1da177e4
LT		 1477 };
1478 int status;
1479
cee54fc9
TM		 1480 status = nfs_wait_on_sequence(args->seqid, req->rq_task);
1481 if (status != 0)
1482 goto out;
1da177e4
LT		 1483 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1484 encode_compound_hdr(&xdr, &hdr);
1485 status = encode_putfh(&xdr, args->fh);
56ae19f3
TM		 1486 if (status)
1487 goto out;
1488 status = encode_savefh(&xdr);
1da177e4
LT		 1489 if (status)
1490 goto out;
1491 status = encode_open(&xdr, args);
1492 if (status)
1493 goto out;
1494 status = encode_getfh(&xdr);
1495 if (status)
1496 goto out;
1497 status = encode_getfattr(&xdr, args->bitmask);
56ae19f3
TM		 1498 if (status)
1499 goto out;
1500 status = encode_restorefh(&xdr);
1501 if (status)
1502 goto out;
1503 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1504out:
1505 return status;
1506}
1507
1508/*
1509 * Encode an OPEN_CONFIRM request
1510 */
1511static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_open_confirmargs *args)
1512{
1513 struct xdr_stream xdr;
1514 struct compound_hdr hdr = {
1515 .nops = 2,
1516 };
1517 int status;
1518
cee54fc9
TM		 1519 status = nfs_wait_on_sequence(args->seqid, req->rq_task);
1520 if (status != 0)
1521 goto out;
1da177e4
LT		 1522 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1523 encode_compound_hdr(&xdr, &hdr);
1524 status = encode_putfh(&xdr, args->fh);
1525 if(status)
1526 goto out;
1527 status = encode_open_confirm(&xdr, args);
1528out:
1529 return status;
1530}
1531
1532/*
1533 * Encode an OPEN request with no attributes.
1534 */
1535static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1536{
1537 struct xdr_stream xdr;
1538 struct compound_hdr hdr = {
1539 .nops = 2,
1540 };
1541 int status;
1542
cee54fc9
TM		 1543 status = nfs_wait_on_sequence(args->seqid, req->rq_task);
1544 if (status != 0)
1545 goto out;
1da177e4
LT		 1546 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1547 encode_compound_hdr(&xdr, &hdr);
1548 status = encode_putfh(&xdr, args->fh);
1549 if (status)
1550 goto out;
1551 status = encode_open(&xdr, args);
1552out:
1553 return status;
1554}
1555
1556/*
1557 * Encode an OPEN_DOWNGRADE request
1558 */
1559static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1560{
1561 struct xdr_stream xdr;
1562 struct compound_hdr hdr = {
516a6af6 1563 .nops = 3,
1da177e4
LT		 1564 };
1565 int status;
1566
1567 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1568 encode_compound_hdr(&xdr, &hdr);
1569 status = encode_putfh(&xdr, args->fh);
1570 if (status)
1571 goto out;
1572 status = encode_open_downgrade(&xdr, args);
516a6af6
TM		 1573 if (status != 0)
1574 goto out;
1575 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1576out:
1577 return status;
1578}
1579
1580/*
1581 * Encode a LOCK request
1582 */
1583static int nfs4_xdr_enc_lock(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1584{
1585 struct xdr_stream xdr;
1586 struct compound_hdr hdr = {
1587 .nops = 2,
1588 };
cee54fc9 1589 struct nfs_lock_opargs *opargs = args->u.lock;
1da177e4
LT		 1590 int status;
1591
06735b34 1592 status = nfs_wait_on_sequence(opargs->lock_seqid, req->rq_task);
cee54fc9
TM		 1593 if (status != 0)
1594 goto out;
06735b34
TM		 1595 /* Do we need to do an open_to_lock_owner? */
1596 if (opargs->lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)
1597 opargs->new_lock_owner = 0;
1da177e4
LT		 1598 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1599 encode_compound_hdr(&xdr, &hdr);
1600 status = encode_putfh(&xdr, args->fh);
1601 if(status)
1602 goto out;
1603 status = encode_lock(&xdr, args);
1604out:
1605 return status;
1606}
1607
1608/*
1609 * Encode a LOCKT request
1610 */
1611static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1612{
1613 struct xdr_stream xdr;
1614 struct compound_hdr hdr = {
1615 .nops = 2,
1616 };
1617 int status;
1618
1619 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1620 encode_compound_hdr(&xdr, &hdr);
1621 status = encode_putfh(&xdr, args->fh);
1622 if(status)
1623 goto out;
1624 status = encode_lockt(&xdr, args);
1625out:
1626 return status;
1627}
1628
1629/*
1630 * Encode a LOCKU request
1631 */
1632static int nfs4_xdr_enc_locku(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args)
1633{
1634 struct xdr_stream xdr;
1635 struct compound_hdr hdr = {
1636 .nops = 2,
1637 };
1638 int status;
1639
1640 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1641 encode_compound_hdr(&xdr, &hdr);
1642 status = encode_putfh(&xdr, args->fh);
1643 if(status)
1644 goto out;
1645 status = encode_locku(&xdr, args);
1646out:
1647 return status;
1648}
1649
1650/*
1651 * Encode a READLINK request
1652 */
1653static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readlink *args)
1654{
1655 struct xdr_stream xdr;
1656 struct compound_hdr hdr = {
1657 .nops = 2,
1658 };
1659 int status;
1660
1661 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1662 encode_compound_hdr(&xdr, &hdr);
1663 status = encode_putfh(&xdr, args->fh);
1664 if(status)
1665 goto out;
1666 status = encode_readlink(&xdr, args, req);
1667out:
1668 return status;
1669}
1670
1671/*
1672 * Encode a READDIR request
1673 */
1674static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readdir_arg *args)
1675{
1676 struct xdr_stream xdr;
1677 struct compound_hdr hdr = {
1678 .nops = 2,
1679 };
1680 int status;
1681
1682 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1683 encode_compound_hdr(&xdr, &hdr);
1684 status = encode_putfh(&xdr, args->fh);
1685 if(status)
1686 goto out;
1687 status = encode_readdir(&xdr, args, req);
1688out:
1689 return status;
1690}
1691
1692/*
1693 * Encode a READ request
1694 */
1695static int nfs4_xdr_enc_read(struct rpc_rqst *req, uint32_t *p, struct nfs_readargs *args)
1696{
1697 struct rpc_auth *auth = req->rq_task->tk_auth;
1698 struct xdr_stream xdr;
1699 struct compound_hdr hdr = {
1700 .nops = 2,
1701 };
1702 int replen, status;
1703
1704 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1705 encode_compound_hdr(&xdr, &hdr);
1706 status = encode_putfh(&xdr, args->fh);
1707 if (status)
1708 goto out;
1709 status = encode_read(&xdr, args);
1710 if (status)
1711 goto out;
1712
1713 /* set up reply kvec
1714 * toplevel status + taglen=0 + rescount + OP_PUTFH + status
1715 * + OP_READ + status + eof + datalen = 9
1716 */
1717 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
1718 xdr_inline_pages(&req->rq_rcv_buf, replen,
1719 args->pages, args->pgbase, args->count);
1720out:
1721 return status;
1722}
1723
1724/*
1725 * Encode an SETATTR request
1726 */
1727static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, uint32_t *p, struct nfs_setattrargs *args)
1728
1729{
1730 struct xdr_stream xdr;
1731 struct compound_hdr hdr = {
1732 .nops = 3,
1733 };
1734 int status;
1735
1736 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1737 encode_compound_hdr(&xdr, &hdr);
1738 status = encode_putfh(&xdr, args->fh);
1739 if(status)
1740 goto out;
1741 status = encode_setattr(&xdr, args, args->server);
1742 if(status)
1743 goto out;
1744 status = encode_getfattr(&xdr, args->bitmask);
1745out:
1746 return status;
1747}
1748
029d105e
BF		 1749/*
1750 * Encode a GETACL request
1751 */
1752static int
1753nfs4_xdr_enc_getacl(struct rpc_rqst *req, uint32_t *p,
1754 struct nfs_getaclargs *args)
1755{
1756 struct xdr_stream xdr;
1757 struct rpc_auth *auth = req->rq_task->tk_auth;
1758 struct compound_hdr hdr = {
1759 .nops = 2,
1760 };
1761 int replen, status;
1762
1763 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1764 encode_compound_hdr(&xdr, &hdr);
1765 status = encode_putfh(&xdr, args->fh);
1766 if (status)
1767 goto out;
1768 status = encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0);
1769 /* set up reply buffer: */
1770 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
1771 xdr_inline_pages(&req->rq_rcv_buf, replen,
1772 args->acl_pages, args->acl_pgbase, args->acl_len);
1773out:
1774 return status;
1775}
1776
1da177e4
LT		 1777/*
1778 * Encode a WRITE request
1779 */
1780static int nfs4_xdr_enc_write(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1781{
1782 struct xdr_stream xdr;
1783 struct compound_hdr hdr = {
1784 .nops = 2,
1785 };
1786 int status;
1787
1788 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1789 encode_compound_hdr(&xdr, &hdr);
1790 status = encode_putfh(&xdr, args->fh);
1791 if (status)
1792 goto out;
1793 status = encode_write(&xdr, args);
1794out:
1795 return status;
1796}
1797
1798/*
1799 * a COMMIT request
1800 */
1801static int nfs4_xdr_enc_commit(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1802{
1803 struct xdr_stream xdr;
1804 struct compound_hdr hdr = {
1805 .nops = 2,
1806 };
1807 int status;
1808
1809 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1810 encode_compound_hdr(&xdr, &hdr);
1811 status = encode_putfh(&xdr, args->fh);
1812 if (status)
1813 goto out;
1814 status = encode_commit(&xdr, args);
1815out:
1816 return status;
1817}
1818
1819/*
1820 * FSINFO request
1821 */
1822static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs4_fsinfo_arg *args)
1823{
1824 struct xdr_stream xdr;
1825 struct compound_hdr hdr = {
1826 .nops = 2,
1827 };
1828 int status;
1829
1830 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1831 encode_compound_hdr(&xdr, &hdr);
1832 status = encode_putfh(&xdr, args->fh);
1833 if (!status)
1834 status = encode_fsinfo(&xdr, args->bitmask);
1835 return status;
1836}
1837
1838/*
1839 * a PATHCONF request
1840 */
1841static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct nfs4_pathconf_arg *args)
1842{
1da177e4
LT		 1843 struct xdr_stream xdr;
1844 struct compound_hdr hdr = {
1845 .nops = 2,
1846 };
1847 int status;
1848
1849 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1850 encode_compound_hdr(&xdr, &hdr);
1851 status = encode_putfh(&xdr, args->fh);
1852 if (!status)
1853 status = encode_getattr_one(&xdr,
1854 args->bitmask[0] & nfs4_pathconf_bitmap[0]);
1855 return status;
1856}
1857
1858/*
1859 * a STATFS request
1860 */
1861static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, uint32_t *p, const struct nfs4_statfs_arg *args)
1862{
1da177e4
LT		 1863 struct xdr_stream xdr;
1864 struct compound_hdr hdr = {
1865 .nops = 2,
1866 };
1867 int status;
1868
1869 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1870 encode_compound_hdr(&xdr, &hdr);
1871 status = encode_putfh(&xdr, args->fh);
1872 if (status == 0)
1873 status = encode_getattr_two(&xdr,
1874 args->bitmask[0] & nfs4_statfs_bitmap[0],
1875 args->bitmask[1] & nfs4_statfs_bitmap[1]);
1876 return status;
1877}
1878
1879/*
1880 * GETATTR_BITMAP request
1881 */
1882static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, uint32_t *p, const struct nfs_fh *fhandle)
1883{
1884 struct xdr_stream xdr;
1885 struct compound_hdr hdr = {
1886 .nops = 2,
1887 };
1888 int status;
1889
1890 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1891 encode_compound_hdr(&xdr, &hdr);
1892 status = encode_putfh(&xdr, fhandle);
1893 if (status == 0)
1894 status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
1895 FATTR4_WORD0_LINK_SUPPORT|
1896 FATTR4_WORD0_SYMLINK_SUPPORT|
1897 FATTR4_WORD0_ACLSUPPORT);
1898 return status;
1899}
1900
1901/*
1902 * a RENEW request
1903 */
1904static int nfs4_xdr_enc_renew(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1905{
1906 struct xdr_stream xdr;
1907 struct compound_hdr hdr = {
1908 .nops = 1,
1909 };
1910
1911 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1912 encode_compound_hdr(&xdr, &hdr);
1913 return encode_renew(&xdr, clp);
1914}
1915
1916/*
1917 * a SETCLIENTID request
1918 */
1919static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, uint32_t *p, struct nfs4_setclientid *sc)
1920{
1921 struct xdr_stream xdr;
1922 struct compound_hdr hdr = {
1923 .nops = 1,
1924 };
1925
1926 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1927 encode_compound_hdr(&xdr, &hdr);
1928 return encode_setclientid(&xdr, sc);
1929}
1930
1931/*
1932 * a SETCLIENTID_CONFIRM request
1933 */
1934static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1935{
1936 struct xdr_stream xdr;
1937 struct compound_hdr hdr = {
1938 .nops = 3,
1939 };
1940 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
1941 int status;
1942
1943 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1944 encode_compound_hdr(&xdr, &hdr);
1945 status = encode_setclientid_confirm(&xdr, clp);
1946 if (!status)
1947 status = encode_putrootfh(&xdr);
1948 if (!status)
1949 status = encode_fsinfo(&xdr, lease_bitmap);
1950 return status;
1951}
1952
1953/*
1954 * DELEGRETURN request
1955 */
1956static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, uint32_t *p, const struct nfs4_delegreturnargs *args)
1957{
1958 struct xdr_stream xdr;
1959 struct compound_hdr hdr = {
1960 .nops = 2,
1961 };
1962 int status;
1963
1964 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1965 encode_compound_hdr(&xdr, &hdr);
1966 if ((status = encode_putfh(&xdr, args->fhandle)) == 0)
1967 status = encode_delegreturn(&xdr, args->stateid);
1968 return status;
1969}
1970
1971/*
1972 * START OF "GENERIC" DECODE ROUTINES.
1973 * These may look a little ugly since they are imported from a "generic"
1974 * set of XDR encode/decode routines which are intended to be shared by
1975 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
1976 *
1977 * If the pain of reading these is too great, it should be a straightforward
1978 * task to translate them into Linux-specific versions which are more
1979 * consistent with the style used in NFSv2/v3...
1980 */
1981#define READ32(x) (x) = ntohl(*p++)
1982#define READ64(x) do { \
1983 (x) = (u64)ntohl(*p++) << 32; \
1984 (x) |= ntohl(*p++); \
1985} while (0)
1986#define READTIME(x) do { \
1987 p++; \
1988 (x.tv_sec) = ntohl(*p++); \
1989 (x.tv_nsec) = ntohl(*p++); \
1990} while (0)
1991#define COPYMEM(x,nbytes) do { \
1992 memcpy((x), p, nbytes); \
1993 p += XDR_QUADLEN(nbytes); \
1994} while (0)
1995
1996#define READ_BUF(nbytes) do { \
1997 p = xdr_inline_decode(xdr, nbytes); \
1998 if (!p) { \
1999 printk(KERN_WARNING "%s: reply buffer overflowed in line %d.", \
2000 __FUNCTION__, __LINE__); \
2001 return -EIO; \
2002 } \
2003} while (0)
2004
2005static int decode_opaque_inline(struct xdr_stream *xdr, uint32_t *len, char **string)
2006{
2007 uint32_t *p;
2008
2009 READ_BUF(4);
2010 READ32(*len);
2011 READ_BUF(*len);
2012 *string = (char *)p;
2013 return 0;
2014}
2015
2016static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2017{
2018 uint32_t *p;
2019
2020 READ_BUF(8);
2021 READ32(hdr->status);
2022 READ32(hdr->taglen);
2023
2024 READ_BUF(hdr->taglen + 4);
2025 hdr->tag = (char *)p;
2026 p += XDR_QUADLEN(hdr->taglen);
2027 READ32(hdr->nops);
2028 return 0;
2029}
2030
2031static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2032{
2033 uint32_t *p;
2034 uint32_t opnum;
2035 int32_t nfserr;
2036
2037 READ_BUF(8);
2038 READ32(opnum);
2039 if (opnum != expected) {
2040 printk(KERN_NOTICE
2041 "nfs4_decode_op_hdr: Server returned operation"
2042 " %d but we issued a request for %d\n",
2043 opnum, expected);
2044 return -EIO;
2045 }
2046 READ32(nfserr);
2047 if (nfserr != NFS_OK)
2048 return -nfs_stat_to_errno(nfserr);
2049 return 0;
2050}
2051
2052/* Dummy routine */
2053static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs4_client *clp)
2054{
2055 uint32_t *p;
2056 uint32_t strlen;
2057 char *str;
2058
2059 READ_BUF(12);
2060 return decode_opaque_inline(xdr, &strlen, &str);
2061}
2062
2063static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2064{
2065 uint32_t bmlen, *p;
2066
2067 READ_BUF(4);
2068 READ32(bmlen);
2069
2070 bitmap[0] = bitmap[1] = 0;
2071 READ_BUF((bmlen << 2));
2072 if (bmlen > 0) {
2073 READ32(bitmap[0]);
2074 if (bmlen > 1)
2075 READ32(bitmap[1]);
2076 }
2077 return 0;
2078}
2079
2080static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, uint32_t **savep)
2081{
2082 uint32_t *p;
2083
2084 READ_BUF(4);
2085 READ32(*attrlen);
2086 *savep = xdr->p;
2087 return 0;
2088}
2089
2090static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2091{
2092 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2093 decode_attr_bitmap(xdr, bitmask);
2094 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2095 } else
2096 bitmask[0] = bitmask[1] = 0;
2097 dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]);
2098 return 0;
2099}
2100
2101static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2102{
2103 uint32_t *p;
2104
2105 *type = 0;
2106 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2107 return -EIO;
2108 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2109 READ_BUF(4);
2110 READ32(*type);
2111 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2112 dprintk("%s: bad type %d\n", __FUNCTION__, *type);
2113 return -EIO;
2114 }
2115 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2116 }
2117 dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type);
2118 return 0;
2119}
2120
2121static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2122{
2123 uint32_t *p;
2124
2125 *change = 0;
2126 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2127 return -EIO;
2128 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2129 READ_BUF(8);
2130 READ64(*change);
2131 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2132 }
2133 dprintk("%s: change attribute=%Lu\n", __FUNCTION__,
2134 (unsigned long long)*change);
2135 return 0;
2136}
2137
2138static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2139{
2140 uint32_t *p;
2141
2142 *size = 0;
2143 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2144 return -EIO;
2145 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2146 READ_BUF(8);
2147 READ64(*size);
2148 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2149 }
2150 dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size);
2151 return 0;
2152}
2153
2154static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2155{
2156 uint32_t *p;
2157
2158 *res = 0;
2159 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2160 return -EIO;
2161 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2162 READ_BUF(4);
2163 READ32(*res);
2164 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2165 }
2166 dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2167 return 0;
2168}
2169
2170static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2171{
2172 uint32_t *p;
2173
2174 *res = 0;
2175 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2176 return -EIO;
2177 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2178 READ_BUF(4);
2179 READ32(*res);
2180 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2181 }
2182 dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2183 return 0;
2184}
2185
2186static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fsid *fsid)
2187{
2188 uint32_t *p;
2189
2190 fsid->major = 0;
2191 fsid->minor = 0;
2192 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2193 return -EIO;
2194 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2195 READ_BUF(16);
2196 READ64(fsid->major);
2197 READ64(fsid->minor);
2198 bitmap[0] &= ~FATTR4_WORD0_FSID;
2199 }
2200 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__,
2201 (unsigned long long)fsid->major,
2202 (unsigned long long)fsid->minor);
2203 return 0;
2204}
2205
2206static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2207{
2208 uint32_t *p;
2209
2210 *res = 60;
2211 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2212 return -EIO;
2213 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2214 READ_BUF(4);
2215 READ32(*res);
2216 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2217 }
2218 dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res);
2219 return 0;
2220}
2221
2222static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2223{
2224 uint32_t *p;
2225
2226 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2227 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2228 return -EIO;
2229 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2230 READ_BUF(4);
2231 READ32(*res);
2232 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2233 }
2234 dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res);
2235 return 0;
2236}
2237
2238static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2239{
2240 uint32_t *p;
2241
2242 *fileid = 0;
2243 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2244 return -EIO;
2245 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2246 READ_BUF(8);
2247 READ64(*fileid);
2248 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2249 }
2250 dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2251 return 0;
2252}
2253
2254static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2255{
2256 uint32_t *p;
2257 int status = 0;
2258
2259 *res = 0;
2260 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2261 return -EIO;
2262 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2263 READ_BUF(8);
2264 READ64(*res);
2265 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2266 }
2267 dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2268 return status;
2269}
2270
2271static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2272{
2273 uint32_t *p;
2274 int status = 0;
2275
2276 *res = 0;
2277 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2278 return -EIO;
2279 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2280 READ_BUF(8);
2281 READ64(*res);
2282 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2283 }
2284 dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2285 return status;
2286}
2287
2288static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2289{
2290 uint32_t *p;
2291 int status = 0;
2292
2293 *res = 0;
2294 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2295 return -EIO;
2296 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2297 READ_BUF(8);
2298 READ64(*res);
2299 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2300 }
2301 dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2302 return status;
2303}
2304
2305static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2306{
2307 uint32_t *p;
2308 int status = 0;
2309
2310 *res = 0;
2311 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2312 return -EIO;
2313 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2314 READ_BUF(8);
2315 READ64(*res);
2316 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2317 }
2318 dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2319 return status;
2320}
2321
2322static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2323{
2324 uint32_t *p;
2325 int status = 0;
2326
2327 *maxlink = 1;
2328 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2329 return -EIO;
2330 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2331 READ_BUF(4);
2332 READ32(*maxlink);
2333 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2334 }
2335 dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink);
2336 return status;
2337}
2338
2339static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2340{
2341 uint32_t *p;
2342 int status = 0;
2343
2344 *maxname = 1024;
2345 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2346 return -EIO;
2347 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2348 READ_BUF(4);
2349 READ32(*maxname);
2350 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2351 }
2352 dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname);
2353 return status;
2354}
2355
2356static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2357{
2358 uint32_t *p;
2359 int status = 0;
2360
2361 *res = 1024;
2362 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2363 return -EIO;
2364 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2365 uint64_t maxread;
2366 READ_BUF(8);
2367 READ64(maxread);
2368 if (maxread > 0x7FFFFFFF)
2369 maxread = 0x7FFFFFFF;
2370 *res = (uint32_t)maxread;
2371 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2372 }
2373 dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res);
2374 return status;
2375}
2376
2377static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2378{
2379 uint32_t *p;
2380 int status = 0;
2381
2382 *res = 1024;
2383 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2384 return -EIO;
2385 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2386 uint64_t maxwrite;
2387 READ_BUF(8);
2388 READ64(maxwrite);
2389 if (maxwrite > 0x7FFFFFFF)
2390 maxwrite = 0x7FFFFFFF;
2391 *res = (uint32_t)maxwrite;
2392 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2393 }
2394 dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res);
2395 return status;
2396}
2397
2398static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
2399{
2400 uint32_t *p;
2401
2402 *mode = 0;
2403 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
2404 return -EIO;
2405 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
2406 READ_BUF(4);
2407 READ32(*mode);
2408 *mode &= ~S_IFMT;
2409 bitmap[1] &= ~FATTR4_WORD1_MODE;
2410 }
2411 dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode);
2412 return 0;
2413}
2414
2415static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
2416{
2417 uint32_t *p;
2418
2419 *nlink = 1;
2420 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
2421 return -EIO;
2422 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
2423 READ_BUF(4);
2424 READ32(*nlink);
2425 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
2426 }
2427 dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink);
2428 return 0;
2429}
2430
2431static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *uid)
2432{
2433 uint32_t len, *p;
2434
2435 *uid = -2;
2436 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
2437 return -EIO;
2438 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
2439 READ_BUF(4);
2440 READ32(len);
2441 READ_BUF(len);
2442 if (len < XDR_MAX_NETOBJ) {
2443 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
2444 dprintk("%s: nfs_map_name_to_uid failed!\n",
2445 __FUNCTION__);
2446 } else
2447 printk(KERN_WARNING "%s: name too long (%u)!\n",
2448 __FUNCTION__, len);
2449 bitmap[1] &= ~FATTR4_WORD1_OWNER;
2450 }
2451 dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid);
2452 return 0;
2453}
2454
2455static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *gid)
2456{
2457 uint32_t len, *p;
2458
2459 *gid = -2;
2460 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
2461 return -EIO;
2462 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
2463 READ_BUF(4);
2464 READ32(len);
2465 READ_BUF(len);
2466 if (len < XDR_MAX_NETOBJ) {
2467 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
2468 dprintk("%s: nfs_map_group_to_gid failed!\n",
2469 __FUNCTION__);
2470 } else
2471 printk(KERN_WARNING "%s: name too long (%u)!\n",
2472 __FUNCTION__, len);
2473 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
2474 }
2475 dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid);
2476 return 0;
2477}
2478
2479static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
2480{
2481 uint32_t major = 0, minor = 0, *p;
2482
2483 *rdev = MKDEV(0,0);
2484 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
2485 return -EIO;
2486 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
2487 dev_t tmp;
2488
2489 READ_BUF(8);
2490 READ32(major);
2491 READ32(minor);
2492 tmp = MKDEV(major, minor);
2493 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
2494 *rdev = tmp;
2495 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
2496 }
2497 dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor);
2498 return 0;
2499}
2500
2501static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2502{
2503 uint32_t *p;
2504 int status = 0;
2505
2506 *res = 0;
2507 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
2508 return -EIO;
2509 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
2510 READ_BUF(8);
2511 READ64(*res);
2512 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
2513 }
2514 dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2515 return status;
2516}
2517
2518static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2519{
2520 uint32_t *p;
2521 int status = 0;
2522
2523 *res = 0;
2524 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
2525 return -EIO;
2526 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
2527 READ_BUF(8);
2528 READ64(*res);
2529 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
2530 }
2531 dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2532 return status;
2533}
2534
2535static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2536{
2537 uint32_t *p;
2538 int status = 0;
2539
2540 *res = 0;
2541 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
2542 return -EIO;
2543 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
2544 READ_BUF(8);
2545 READ64(*res);
2546 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
2547 }
2548 dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2549 return status;
2550}
2551
2552static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
2553{
2554 uint32_t *p;
2555
2556 *used = 0;
2557 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
2558 return -EIO;
2559 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
2560 READ_BUF(8);
2561 READ64(*used);
2562 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
2563 }
2564 dprintk("%s: space used=%Lu\n", __FUNCTION__,
2565 (unsigned long long)*used);
2566 return 0;
2567}
2568
2569static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
2570{
2571 uint32_t *p;
2572 uint64_t sec;
2573 uint32_t nsec;
2574
2575 READ_BUF(12);
2576 READ64(sec);
2577 READ32(nsec);
2578 time->tv_sec = (time_t)sec;
2579 time->tv_nsec = (long)nsec;
2580 return 0;
2581}
2582
2583static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2584{
2585 int status = 0;
2586
2587 time->tv_sec = 0;
2588 time->tv_nsec = 0;
2589 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
2590 return -EIO;
2591 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
2592 status = decode_attr_time(xdr, time);
2593 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
2594 }
2595 dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2596 return status;
2597}
2598
2599static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2600{
2601 int status = 0;
2602
2603 time->tv_sec = 0;
2604 time->tv_nsec = 0;
2605 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
2606 return -EIO;
2607 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
2608 status = decode_attr_time(xdr, time);
2609 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
2610 }
2611 dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2612 return status;
2613}
2614
2615static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2616{
2617 int status = 0;
2618
2619 time->tv_sec = 0;
2620 time->tv_nsec = 0;
2621 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
2622 return -EIO;
2623 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
2624 status = decode_attr_time(xdr, time);
2625 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
2626 }
2627 dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2628 return status;
2629}
2630
2631static int verify_attr_len(struct xdr_stream *xdr, uint32_t *savep, uint32_t attrlen)
2632{
2633 unsigned int attrwords = XDR_QUADLEN(attrlen);
2634 unsigned int nwords = xdr->p - savep;
2635
2636 if (unlikely(attrwords != nwords)) {
2637 printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n",
2638 __FUNCTION__,
2639 attrwords << 2,
2640 (attrwords < nwords) ? '<' : '>',
2641 nwords << 2);
2642 return -EIO;
2643 }
2644 return 0;
2645}
2646
2647static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2648{
2649 uint32_t *p;
2650
2651 READ_BUF(20);
2652 READ32(cinfo->atomic);
2653 READ64(cinfo->before);
2654 READ64(cinfo->after);
2655 return 0;
2656}
2657
2658static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
2659{
2660 uint32_t *p;
2661 uint32_t supp, acc;
2662 int status;
2663
2664 status = decode_op_hdr(xdr, OP_ACCESS);
2665 if (status)
2666 return status;
2667 READ_BUF(8);
2668 READ32(supp);
2669 READ32(acc);
2670 access->supported = supp;
2671 access->access = acc;
2672 return 0;
2673}
2674
2675static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
2676{
2677 uint32_t *p;
2678 int status;
2679
2680 status = decode_op_hdr(xdr, OP_CLOSE);
2681 if (status)
2682 return status;
2683 READ_BUF(sizeof(res->stateid.data));
2684 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2685 return 0;
2686}
2687
2688static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
2689{
2690 uint32_t *p;
2691 int status;
2692
2693 status = decode_op_hdr(xdr, OP_COMMIT);
2694 if (status)
2695 return status;
2696 READ_BUF(8);
2697 COPYMEM(res->verf->verifier, 8);
2698 return 0;
2699}
2700
2701static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2702{
2703 uint32_t *p;
2704 uint32_t bmlen;
2705 int status;
2706
2707 status = decode_op_hdr(xdr, OP_CREATE);
2708 if (status)
2709 return status;
2710 if ((status = decode_change_info(xdr, cinfo)))
2711 return status;
2712 READ_BUF(4);
2713 READ32(bmlen);
2714 READ_BUF(bmlen << 2);
2715 return 0;
2716}
2717
2718static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
2719{
2720 uint32_t *savep;
2721 uint32_t attrlen,
2722 bitmap[2] = {0};
2723 int status;
2724
2725 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2726 goto xdr_error;
2727 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2728 goto xdr_error;
2729 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2730 goto xdr_error;
2731 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
2732 goto xdr_error;
2733 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
2734 goto xdr_error;
2735 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
2736 goto xdr_error;
2737 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
2738 goto xdr_error;
2739 status = verify_attr_len(xdr, savep, attrlen);
2740xdr_error:
2741 if (status != 0)
2742 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2743 return status;
2744}
2745
2746static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
2747{
2748 uint32_t *savep;
2749 uint32_t attrlen,
2750 bitmap[2] = {0};
2751 int status;
2752
2753 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2754 goto xdr_error;
2755 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2756 goto xdr_error;
2757 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2758 goto xdr_error;
2759
2760 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
2761 goto xdr_error;
2762 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
2763 goto xdr_error;
2764 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
2765 goto xdr_error;
2766 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
2767 goto xdr_error;
2768 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
2769 goto xdr_error;
2770 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
2771 goto xdr_error;
2772
2773 status = verify_attr_len(xdr, savep, attrlen);
2774xdr_error:
2775 if (status != 0)
2776 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2777 return status;
2778}
2779
2780static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
2781{
2782 uint32_t *savep;
2783 uint32_t attrlen,
2784 bitmap[2] = {0};
2785 int status;
2786
2787 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2788 goto xdr_error;
2789 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2790 goto xdr_error;
2791 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2792 goto xdr_error;
2793
2794 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
2795 goto xdr_error;
2796 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
2797 goto xdr_error;
2798
2799 status = verify_attr_len(xdr, savep, attrlen);
2800xdr_error:
2801 if (status != 0)
2802 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2803 return status;
2804}
2805
2806static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
2807{
2808 uint32_t *savep;
2809 uint32_t attrlen,
2810 bitmap[2] = {0},
2811 type;
2812 int status, fmode = 0;
2813
2814 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2815 goto xdr_error;
2816 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2817 goto xdr_error;
2818
2819 fattr->bitmap[0] = bitmap[0];
2820 fattr->bitmap[1] = bitmap[1];
2821
2822 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2823 goto xdr_error;
2824
2825
2826 if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
2827 goto xdr_error;
2828 fattr->type = nfs_type2fmt[type].nfs2type;
2829 fmode = nfs_type2fmt[type].mode;
2830
2831 if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
2832 goto xdr_error;
2833 if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
2834 goto xdr_error;
2835 if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid_u.nfs4)) != 0)
2836 goto xdr_error;
2837 if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
2838 goto xdr_error;
2839 if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
2840 goto xdr_error;
2841 fattr->mode |= fmode;
2842 if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
2843 goto xdr_error;
2844 if ((status = decode_attr_owner(xdr, bitmap, server->nfs4_state, &fattr->uid)) != 0)
2845 goto xdr_error;
2846 if ((status = decode_attr_group(xdr, bitmap, server->nfs4_state, &fattr->gid)) != 0)
2847 goto xdr_error;
2848 if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
2849 goto xdr_error;
2850 if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
2851 goto xdr_error;
2852 if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
2853 goto xdr_error;
2854 if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
2855 goto xdr_error;
2856 if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
2857 goto xdr_error;
33801147 2858 if ((status = verify_attr_len(xdr, savep, attrlen)) == 0)
1da177e4 2859 fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
1da177e4
LT		 2860xdr_error:
2861 if (status != 0)
2862 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2863 return status;
2864}
2865
2866
2867static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
2868{
2869 uint32_t *savep;
2870 uint32_t attrlen, bitmap[2];
2871 int status;
2872
2873 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2874 goto xdr_error;
2875 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2876 goto xdr_error;
2877 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2878 goto xdr_error;
2879
2880 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
2881
2882 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
2883 goto xdr_error;
2884 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
2885 goto xdr_error;
2886 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
2887 goto xdr_error;
2888 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
2889 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
2890 goto xdr_error;
2891 fsinfo->wtpref = fsinfo->wtmax;
2892
2893 status = verify_attr_len(xdr, savep, attrlen);
2894xdr_error:
2895 if (status != 0)
2896 printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status);
2897 return status;
2898}
2899
2900static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
2901{
2902 uint32_t *p;
2903 uint32_t len;
2904 int status;
2905
2906 status = decode_op_hdr(xdr, OP_GETFH);
2907 if (status)
2908 return status;
2909 /* Zero handle first to allow comparisons */
2910 memset(fh, 0, sizeof(*fh));
2911
2912 READ_BUF(4);
2913 READ32(len);
2914 if (len > NFS4_FHSIZE)
2915 return -EIO;
2916 fh->size = len;
2917 READ_BUF(len);
2918 COPYMEM(fh->data, len);
2919 return 0;
2920}
2921
2922static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2923{
2924 int status;
2925
2926 status = decode_op_hdr(xdr, OP_LINK);
2927 if (status)
2928 return status;
2929 return decode_change_info(xdr, cinfo);
2930}
2931
2932/*
2933 * We create the owner, so we know a proper owner.id length is 4.
2934 */
2935static int decode_lock_denied (struct xdr_stream *xdr, struct nfs_lock_denied *denied)
2936{
2937 uint32_t *p;
2938 uint32_t namelen;
2939
2940 READ_BUF(32);
2941 READ64(denied->offset);
2942 READ64(denied->length);
2943 READ32(denied->type);
2944 READ64(denied->owner.clientid);
2945 READ32(namelen);
2946 READ_BUF(namelen);
2947 if (namelen == 4)
2948 READ32(denied->owner.id);
2949 return -NFS4ERR_DENIED;
2950}
2951
2952static int decode_lock(struct xdr_stream *xdr, struct nfs_lockres *res)
2953{
2954 uint32_t *p;
2955 int status;
2956
2957 status = decode_op_hdr(xdr, OP_LOCK);
2958 if (status == 0) {
06735b34
TM		 2959 READ_BUF(sizeof(res->u.stateid.data));
2960 COPYMEM(res->u.stateid.data, sizeof(res->u.stateid.data));
1da177e4
LT		 2961 } else if (status == -NFS4ERR_DENIED)
2962 return decode_lock_denied(xdr, &res->u.denied);
2963 return status;
2964}
2965
2966static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockres *res)
2967{
2968 int status;
2969 status = decode_op_hdr(xdr, OP_LOCKT);
2970 if (status == -NFS4ERR_DENIED)
2971 return decode_lock_denied(xdr, &res->u.denied);
2972 return status;
2973}
2974
2975static int decode_locku(struct xdr_stream *xdr, struct nfs_lockres *res)
2976{
2977 uint32_t *p;
2978 int status;
2979
2980 status = decode_op_hdr(xdr, OP_LOCKU);
2981 if (status == 0) {
faf5f49c
TM		 2982 READ_BUF(sizeof(res->u.stateid.data));
2983 COPYMEM(res->u.stateid.data, sizeof(res->u.stateid.data));
1da177e4
LT		 2984 }
2985 return status;
2986}
2987
2988static int decode_lookup(struct xdr_stream *xdr)
2989{
2990 return decode_op_hdr(xdr, OP_LOOKUP);
2991}
2992
2993/* This is too sick! */
2994static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
2995{
2996 uint32_t *p;
2997 uint32_t limit_type, nblocks, blocksize;
2998
2999 READ_BUF(12);
3000 READ32(limit_type);
3001 switch (limit_type) {
3002 case 1:
3003 READ64(*maxsize);
3004 break;
3005 case 2:
3006 READ32(nblocks);
3007 READ32(blocksize);
3008 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
3009 }
3010 return 0;
3011}
3012
3013static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
3014{
3015 uint32_t *p;
3016 uint32_t delegation_type;
3017
3018 READ_BUF(4);
3019 READ32(delegation_type);
3020 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
3021 res->delegation_type = 0;
3022 return 0;
3023 }
3024 READ_BUF(20);
3025 COPYMEM(res->delegation.data, sizeof(res->delegation.data));
3026 READ32(res->do_recall);
3027 switch (delegation_type) {
3028 case NFS4_OPEN_DELEGATE_READ:
3029 res->delegation_type = FMODE_READ;
3030 break;
3031 case NFS4_OPEN_DELEGATE_WRITE:
3032 res->delegation_type = FMODE_WRITE|FMODE_READ;
3033 if (decode_space_limit(xdr, &res->maxsize) < 0)
3034 return -EIO;
3035 }
3036 return decode_ace(xdr, NULL, res->server->nfs4_state);
3037}
3038
3039static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
3040{
3041 uint32_t *p;
3042 uint32_t bmlen;
3043 int status;
3044
3045 status = decode_op_hdr(xdr, OP_OPEN);
3046 if (status)
3047 return status;
3048 READ_BUF(sizeof(res->stateid.data));
3049 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3050
3051 decode_change_info(xdr, &res->cinfo);
3052
3053 READ_BUF(8);
3054 READ32(res->rflags);
3055 READ32(bmlen);
3056 if (bmlen > 10)
3057 goto xdr_error;
3058
3059 READ_BUF(bmlen << 2);
3060 p += bmlen;
3061 return decode_delegation(xdr, res);
3062xdr_error:
3063 printk(KERN_NOTICE "%s: xdr error!\n", __FUNCTION__);
3064 return -EIO;
3065}
3066
3067static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3068{
3069 uint32_t *p;
3070 int status;
3071
3072 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3073 if (status)
3074 return status;
3075 READ_BUF(sizeof(res->stateid.data));
3076 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3077 return 0;
3078}
3079
3080static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3081{
3082 uint32_t *p;
3083 int status;
3084
3085 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3086 if (status)
3087 return status;
3088 READ_BUF(sizeof(res->stateid.data));
3089 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3090 return 0;
3091}
3092
3093static int decode_putfh(struct xdr_stream *xdr)
3094{
3095 return decode_op_hdr(xdr, OP_PUTFH);
3096}
3097
3098static int decode_putrootfh(struct xdr_stream *xdr)
3099{
3100 return decode_op_hdr(xdr, OP_PUTROOTFH);
3101}
3102
3103static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3104{
3105 struct kvec *iov = req->rq_rcv_buf.head;
3106 uint32_t *p;
3107 uint32_t count, eof, recvd, hdrlen;
3108 int status;
3109
3110 status = decode_op_hdr(xdr, OP_READ);
3111 if (status)
3112 return status;
3113 READ_BUF(8);
3114 READ32(eof);
3115 READ32(count);
3116 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3117 recvd = req->rq_rcv_buf.len - hdrlen;
3118 if (count > recvd) {
3119 printk(KERN_WARNING "NFS: server cheating in read reply: "
3120 "count %u > recvd %u\n", count, recvd);
3121 count = recvd;
3122 eof = 0;
3123 }
3124 xdr_read_pages(xdr, count);
3125 res->eof = eof;
3126 res->count = count;
3127 return 0;
3128}
3129
3130static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3131{
3132 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3133 struct page *page = *rcvbuf->pages;
3134 struct kvec *iov = rcvbuf->head;
3135 unsigned int nr, pglen = rcvbuf->page_len;
3136 uint32_t *end, *entry, *p, *kaddr;
3137 uint32_t len, attrlen;
3138 int hdrlen, recvd, status;
3139
3140 status = decode_op_hdr(xdr, OP_READDIR);
3141 if (status)
3142 return status;
3143 READ_BUF(8);
3144 COPYMEM(readdir->verifier.data, 8);
eadf4598
TM		 3145 dprintk("%s: verifier = 0x%x%x\n",
3146 __FUNCTION__,
3147 ((u32 *)readdir->verifier.data)[0],
3148 ((u32 *)readdir->verifier.data)[1]);
3149
1da177e4
LT		 3150
3151 hdrlen = (char *) p - (char *) iov->iov_base;
3152 recvd = rcvbuf->len - hdrlen;
3153 if (pglen > recvd)
3154 pglen = recvd;
3155 xdr_read_pages(xdr, pglen);
3156
3157 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3158 kaddr = p = (uint32_t *) kmap_atomic(page, KM_USER0);
3159 end = (uint32_t *) ((char *)p + pglen + readdir->pgbase);
3160 entry = p;
3161 for (nr = 0; *p++; nr++) {
3162 if (p + 3 > end)
3163 goto short_pkt;
eadf4598 3164 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
1da177e4
LT		 3165 p += 2; /* cookie */
3166 len = ntohl(*p++); /* filename length */
3167 if (len > NFS4_MAXNAMLEN) {
3168 printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len);
3169 goto err_unmap;
3170 }
eadf4598 3171 dprintk("filename = %*s\n", len, (char *)p);
1da177e4
LT		 3172 p += XDR_QUADLEN(len);
3173 if (p + 1 > end)
3174 goto short_pkt;
3175 len = ntohl(*p++); /* bitmap length */
3176 p += len;
3177 if (p + 1 > end)
3178 goto short_pkt;
3179 attrlen = XDR_QUADLEN(ntohl(*p++));
3180 p += attrlen; /* attributes */
3181 if (p + 2 > end)
3182 goto short_pkt;
3183 entry = p;
3184 }
3185 if (!nr && (entry[0] != 0 || entry[1] == 0))
3186 goto short_pkt;
3187out:
3188 kunmap_atomic(kaddr, KM_USER0);
3189 return 0;
3190short_pkt:
eadf4598 3191 dprintk("%s: short packet at entry %d\n", __FUNCTION__, nr);
1da177e4
LT		 3192 entry[0] = entry[1] = 0;
3193 /* truncate listing ? */
3194 if (!nr) {
3195 printk(KERN_NOTICE "NFS: readdir reply truncated!\n");
3196 entry[1] = 1;
3197 }
3198 goto out;
3199err_unmap:
3200 kunmap_atomic(kaddr, KM_USER0);
3201 return -errno_NFSERR_IO;
3202}
3203
3204static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3205{
3206 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3207 struct kvec *iov = rcvbuf->head;
3208 int hdrlen, len, recvd;
3209 uint32_t *p;
3210 char *kaddr;
3211 int status;
3212
3213 status = decode_op_hdr(xdr, OP_READLINK);
3214 if (status)
3215 return status;
3216
3217 /* Convert length of symlink */
3218 READ_BUF(4);
3219 READ32(len);
3220 if (len >= rcvbuf->page_len || len <= 0) {
3221 dprintk(KERN_WARNING "nfs: server returned giant symlink!\n");
3222 return -ENAMETOOLONG;
3223 }
3224 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3225 recvd = req->rq_rcv_buf.len - hdrlen;
3226 if (recvd < len) {
3227 printk(KERN_WARNING "NFS: server cheating in readlink reply: "
3228 "count %u > recvd %u\n", len, recvd);
3229 return -EIO;
3230 }
3231 xdr_read_pages(xdr, len);
3232 /*
3233 * The XDR encode routine has set things up so that
3234 * the link text will be copied directly into the
3235 * buffer. We just have to do overflow-checking,
3236 * and and null-terminate the text (the VFS expects
3237 * null-termination).
3238 */
3239 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3240 kaddr[len+rcvbuf->page_base] = '\0';
3241 kunmap_atomic(kaddr, KM_USER0);
3242 return 0;
3243}
3244
3245static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3246{
3247 int status;
3248
3249 status = decode_op_hdr(xdr, OP_REMOVE);
3250 if (status)
3251 goto out;
3252 status = decode_change_info(xdr, cinfo);
3253out:
3254 return status;
3255}
3256
3257static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3258 struct nfs4_change_info *new_cinfo)
3259{
3260 int status;
3261
3262 status = decode_op_hdr(xdr, OP_RENAME);
3263 if (status)
3264 goto out;
3265 if ((status = decode_change_info(xdr, old_cinfo)))
3266 goto out;
3267 status = decode_change_info(xdr, new_cinfo);
3268out:
3269 return status;
3270}
3271
3272static int decode_renew(struct xdr_stream *xdr)
3273{
3274 return decode_op_hdr(xdr, OP_RENEW);
3275}
3276
56ae19f3
TM		 3277static int
3278decode_restorefh(struct xdr_stream *xdr)
3279{
3280 return decode_op_hdr(xdr, OP_RESTOREFH);
3281}
3282
029d105e
BF		 3283static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
3284 size_t *acl_len)
3285{
3286 uint32_t *savep;
3287 uint32_t attrlen,
3288 bitmap[2] = {0};
3289 struct kvec *iov = req->rq_rcv_buf.head;
3290 int status;
3291
3292 *acl_len = 0;
3293 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3294 goto out;
3295 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3296 goto out;
3297 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3298 goto out;
3299
3300 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
3301 return -EIO;
3302 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
3303 int hdrlen, recvd;
3304
3305 /* We ignore &savep and don't do consistency checks on
3306 * the attr length. Let userspace figure it out.... */
3307 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
3308 recvd = req->rq_rcv_buf.len - hdrlen;
3309 if (attrlen > recvd) {
3310 printk(KERN_WARNING "NFS: server cheating in getattr"
3311 " acl reply: attrlen %u > recvd %u\n",
3312 attrlen, recvd);
3313 return -EINVAL;
3314 }
3315 if (attrlen <= *acl_len)
3316 xdr_read_pages(xdr, attrlen);
3317 *acl_len = attrlen;
8c233cf9
BF		 3318 } else
3319 status = -EOPNOTSUPP;
029d105e
BF		 3320
3321out:
3322 return status;
3323}
3324
1da177e4
LT		 3325static int
3326decode_savefh(struct xdr_stream *xdr)
3327{
3328 return decode_op_hdr(xdr, OP_SAVEFH);
3329}
3330
3331static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res)
3332{
3333 uint32_t *p;
3334 uint32_t bmlen;
3335 int status;
3336
3337
3338 status = decode_op_hdr(xdr, OP_SETATTR);
3339 if (status)
3340 return status;
3341 READ_BUF(4);
3342 READ32(bmlen);
3343 READ_BUF(bmlen << 2);
3344 return 0;
3345}
3346
3347static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_client *clp)
3348{
3349 uint32_t *p;
3350 uint32_t opnum;
3351 int32_t nfserr;
3352
3353 READ_BUF(8);
3354 READ32(opnum);
3355 if (opnum != OP_SETCLIENTID) {
3356 printk(KERN_NOTICE
3357 "nfs4_decode_setclientid: Server returned operation"
3358 " %d\n", opnum);
3359 return -EIO;
3360 }
3361 READ32(nfserr);
3362 if (nfserr == NFS_OK) {
3363 READ_BUF(8 + sizeof(clp->cl_confirm.data));
3364 READ64(clp->cl_clientid);
3365 COPYMEM(clp->cl_confirm.data, sizeof(clp->cl_confirm.data));
3366 } else if (nfserr == NFSERR_CLID_INUSE) {
3367 uint32_t len;
3368
3369 /* skip netid string */
3370 READ_BUF(4);
3371 READ32(len);
3372 READ_BUF(len);
3373
3374 /* skip uaddr string */
3375 READ_BUF(4);
3376 READ32(len);
3377 READ_BUF(len);
3378 return -NFSERR_CLID_INUSE;
3379 } else
3380 return -nfs_stat_to_errno(nfserr);
3381
3382 return 0;
3383}
3384
3385static int decode_setclientid_confirm(struct xdr_stream *xdr)
3386{
3387 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
3388}
3389
3390static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
3391{
3392 uint32_t *p;
3393 int status;
3394
3395 status = decode_op_hdr(xdr, OP_WRITE);
3396 if (status)
3397 return status;
3398
3399 READ_BUF(16);
3400 READ32(res->count);
3401 READ32(res->verf->committed);
3402 COPYMEM(res->verf->verifier, 8);
3403 return 0;
3404}
3405
3406static int decode_delegreturn(struct xdr_stream *xdr)
3407{
3408 return decode_op_hdr(xdr, OP_DELEGRETURN);
3409}
3410
3411/*
3412 * Decode OPEN_DOWNGRADE response
3413 */
3414static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3415{
3416 struct xdr_stream xdr;
3417 struct compound_hdr hdr;
3418 int status;
3419
3420 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3421 status = decode_compound_hdr(&xdr, &hdr);
3422 if (status)
3423 goto out;
3424 status = decode_putfh(&xdr);
3425 if (status)
3426 goto out;
3427 status = decode_open_downgrade(&xdr, res);
516a6af6
TM		 3428 if (status != 0)
3429 goto out;
3430 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 3431out:
3432 return status;
3433}
3434
3435/*
3436 * END OF "GENERIC" DECODE ROUTINES.
3437 */
3438
3439/*
3440 * Decode ACCESS response
3441 */
3442static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_accessres *res)
3443{
3444 struct xdr_stream xdr;
3445 struct compound_hdr hdr;
3446 int status;
3447
3448 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3449 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3450 goto out;
3451 if ((status = decode_putfh(&xdr)) == 0)
3452 status = decode_access(&xdr, res);
3453out:
3454 return status;
3455}
3456
3457/*
3458 * Decode LOOKUP response
3459 */
3460static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3461{
3462 struct xdr_stream xdr;
3463 struct compound_hdr hdr;
3464 int status;
3465
3466 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3467 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3468 goto out;
3469 if ((status = decode_putfh(&xdr)) != 0)
3470 goto out;
3471 if ((status = decode_lookup(&xdr)) != 0)
3472 goto out;
3473 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3474 goto out;
3475 status = decode_getfattr(&xdr, res->fattr, res->server);
3476out:
3477 return status;
3478}
3479
3480/*
3481 * Decode LOOKUP_ROOT response
3482 */
3483static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3484{
3485 struct xdr_stream xdr;
3486 struct compound_hdr hdr;
3487 int status;
3488
3489 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3490 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3491 goto out;
3492 if ((status = decode_putrootfh(&xdr)) != 0)
3493 goto out;
3494 if ((status = decode_getfh(&xdr, res->fh)) == 0)
3495 status = decode_getfattr(&xdr, res->fattr, res->server);
3496out:
3497 return status;
3498}
3499
3500/*
3501 * Decode REMOVE response
3502 */
3503static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo)
3504{
3505 struct xdr_stream xdr;
3506 struct compound_hdr hdr;
3507 int status;
3508
3509 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3510 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3511 goto out;
3512 if ((status = decode_putfh(&xdr)) == 0)
3513 status = decode_remove(&xdr, cinfo);
3514out:
3515 return status;
3516}
3517
3518/*
3519 * Decode RENAME response
3520 */
3521static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_rename_res *res)
3522{
3523 struct xdr_stream xdr;
3524 struct compound_hdr hdr;
3525 int status;
3526
3527 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3528 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3529 goto out;
3530 if ((status = decode_putfh(&xdr)) != 0)
3531 goto out;
3532 if ((status = decode_savefh(&xdr)) != 0)
3533 goto out;
3534 if ((status = decode_putfh(&xdr)) != 0)
3535 goto out;
3536 status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo);
3537out:
3538 return status;
3539}
3540
3541/*
3542 * Decode LINK response
3543 */
91ba2eee 3544static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_link_res *res)
1da177e4
LT		 3545{
3546 struct xdr_stream xdr;
3547 struct compound_hdr hdr;
3548 int status;
3549
3550 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3551 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3552 goto out;
3553 if ((status = decode_putfh(&xdr)) != 0)
3554 goto out;
3555 if ((status = decode_savefh(&xdr)) != 0)
3556 goto out;
3557 if ((status = decode_putfh(&xdr)) != 0)
3558 goto out;
91ba2eee
TM		 3559 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
3560 goto out;
3561 /*
3562 * Note order: OP_LINK leaves the directory as the current
3563 * filehandle.
3564 */
3565 if (decode_getfattr(&xdr, res->dir_attr, res->server) != 0)
3566 goto out;
3567 if ((status = decode_restorefh(&xdr)) != 0)
3568 goto out;
3569 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 3570out:
3571 return status;
3572}
3573
3574/*
3575 * Decode CREATE response
3576 */
3577static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3578{
3579 struct xdr_stream xdr;
3580 struct compound_hdr hdr;
3581 int status;
3582
3583 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3584 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3585 goto out;
3586 if ((status = decode_putfh(&xdr)) != 0)
3587 goto out;
56ae19f3
TM		 3588 if ((status = decode_savefh(&xdr)) != 0)
3589 goto out;
1da177e4
LT		 3590 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
3591 goto out;
3592 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3593 goto out;
56ae19f3
TM		 3594 if (decode_getfattr(&xdr, res->fattr, res->server) != 0)
3595 goto out;
3596 if ((status = decode_restorefh(&xdr)) != 0)
3597 goto out;
3598 decode_getfattr(&xdr, res->dir_fattr, res->server);
1da177e4
LT		 3599out:
3600 return status;
3601}
3602
3603/*
3604 * Decode SYMLINK response
3605 */
3606static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3607{
3608 return nfs4_xdr_dec_create(rqstp, p, res);
3609}
3610
3611/*
3612 * Decode GETATTR response
3613 */
3614static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_getattr_res *res)
3615{
3616 struct xdr_stream xdr;
3617 struct compound_hdr hdr;
3618 int status;
3619
3620 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3621 status = decode_compound_hdr(&xdr, &hdr);
3622 if (status)
3623 goto out;
3624 status = decode_putfh(&xdr);
3625 if (status)
3626 goto out;
3627 status = decode_getfattr(&xdr, res->fattr, res->server);
3628out:
3629 return status;
3630
3631}
3632
23ec6965
BF		 3633/*
3634 * Encode an SETACL request
3635 */
3636static int
3637nfs4_xdr_enc_setacl(struct rpc_rqst *req, uint32_t *p, struct nfs_setaclargs *args)
3638{
3639 struct xdr_stream xdr;
3640 struct compound_hdr hdr = {
3641 .nops = 2,
3642 };
3643 int status;
3644
3645 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
3646 encode_compound_hdr(&xdr, &hdr);
3647 status = encode_putfh(&xdr, args->fh);
3648 if (status)
3649 goto out;
3650 status = encode_setacl(&xdr, args);
3651out:
3652 return status;
3653}
3654/*
3655 * Decode SETACL response
3656 */
3657static int
3658nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, uint32_t *p, void *res)
3659{
3660 struct xdr_stream xdr;
3661 struct compound_hdr hdr;
3662 int status;
3663
3664 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3665 status = decode_compound_hdr(&xdr, &hdr);
3666 if (status)
3667 goto out;
3668 status = decode_putfh(&xdr);
3669 if (status)
3670 goto out;
3671 status = decode_setattr(&xdr, res);
3672out:
3673 return status;
3674}
1da177e4 3675
029d105e
BF		 3676/*
3677 * Decode GETACL response
3678 */
3679static int
3680nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, uint32_t *p, size_t *acl_len)
3681{
3682 struct xdr_stream xdr;
3683 struct compound_hdr hdr;
3684 int status;
3685
3686 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3687 status = decode_compound_hdr(&xdr, &hdr);
3688 if (status)
3689 goto out;
3690 status = decode_putfh(&xdr);
3691 if (status)
3692 goto out;
3693 status = decode_getacl(&xdr, rqstp, acl_len);
3694
3695out:
3696 return status;
3697}
3698
1da177e4
LT		 3699/*
3700 * Decode CLOSE response
3701 */
3702static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3703{
3704 struct xdr_stream xdr;
3705 struct compound_hdr hdr;
3706 int status;
3707
3708 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3709 status = decode_compound_hdr(&xdr, &hdr);
3710 if (status)
3711 goto out;
3712 status = decode_putfh(&xdr);
3713 if (status)
3714 goto out;
3715 status = decode_close(&xdr, res);
516a6af6
TM		 3716 if (status != 0)
3717 goto out;
3718 /*
3719 * Note: Server may do delete on close for this file
3720 * in which case the getattr call will fail with
3721 * an ESTALE error. Shouldn't be a problem,
3722 * though, since fattr->valid will remain unset.
3723 */
3724 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 3725out:
3726 return status;
3727}
3728
3729/*
3730 * Decode OPEN response
3731 */
3732static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3733{
3734 struct xdr_stream xdr;
3735 struct compound_hdr hdr;
3736 int status;
3737
3738 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3739 status = decode_compound_hdr(&xdr, &hdr);
3740 if (status)
3741 goto out;
3742 status = decode_putfh(&xdr);
3743 if (status)
3744 goto out;
56ae19f3
TM		 3745 status = decode_savefh(&xdr);
3746 if (status)
3747 goto out;
1da177e4
LT		 3748 status = decode_open(&xdr, res);
3749 if (status)
3750 goto out;
3751 status = decode_getfh(&xdr, &res->fh);
3752 if (status)
3753 goto out;
56ae19f3
TM		 3754 if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
3755 goto out;
3756 if ((status = decode_restorefh(&xdr)) != 0)
3757 goto out;
3758 decode_getfattr(&xdr, res->dir_attr, res->server);
1da177e4
LT		 3759out:
3760 return status;
3761}
3762
3763/*
3764 * Decode OPEN_CONFIRM response
3765 */
3766static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_open_confirmres *res)
3767{
3768 struct xdr_stream xdr;
3769 struct compound_hdr hdr;
3770 int status;
3771
3772 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3773 status = decode_compound_hdr(&xdr, &hdr);
3774 if (status)
3775 goto out;
3776 status = decode_putfh(&xdr);
3777 if (status)
3778 goto out;
3779 status = decode_open_confirm(&xdr, res);
3780out:
3781 return status;
3782}
3783
3784/*
3785 * Decode OPEN response
3786 */
3787static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3788{
3789 struct xdr_stream xdr;
3790 struct compound_hdr hdr;
3791 int status;
3792
3793 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3794 status = decode_compound_hdr(&xdr, &hdr);
3795 if (status)
3796 goto out;
3797 status = decode_putfh(&xdr);
3798 if (status)
3799 goto out;
3800 status = decode_open(&xdr, res);
3801out:
3802 return status;
3803}
3804
3805/*
3806 * Decode SETATTR response
3807 */
3808static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_setattrres *res)
3809{
3810 struct xdr_stream xdr;
3811 struct compound_hdr hdr;
3812 int status;
3813
3814 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3815 status = decode_compound_hdr(&xdr, &hdr);
3816 if (status)
3817 goto out;
3818 status = decode_putfh(&xdr);
3819 if (status)
3820 goto out;
3821 status = decode_setattr(&xdr, res);
3822 if (status)
3823 goto out;
3824 status = decode_getfattr(&xdr, res->fattr, res->server);
3825 if (status == NFS4ERR_DELAY)
3826 status = 0;
3827out:
3828 return status;
3829}
3830
3831/*
3832 * Decode LOCK response
3833 */
3834static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3835{
3836 struct xdr_stream xdr;
3837 struct compound_hdr hdr;
3838 int status;
3839
3840 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3841 status = decode_compound_hdr(&xdr, &hdr);
3842 if (status)
3843 goto out;
3844 status = decode_putfh(&xdr);
3845 if (status)
3846 goto out;
3847 status = decode_lock(&xdr, res);
3848out:
3849 return status;
3850}
3851
3852/*
3853 * Decode LOCKT response
3854 */
3855static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3856{
3857 struct xdr_stream xdr;
3858 struct compound_hdr hdr;
3859 int status;
3860
3861 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3862 status = decode_compound_hdr(&xdr, &hdr);
3863 if (status)
3864 goto out;
3865 status = decode_putfh(&xdr);
3866 if (status)
3867 goto out;
3868 status = decode_lockt(&xdr, res);
3869out:
3870 return status;
3871}
3872
3873/*
3874 * Decode LOCKU response
3875 */
3876static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res)
3877{
3878 struct xdr_stream xdr;
3879 struct compound_hdr hdr;
3880 int status;
3881
3882 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3883 status = decode_compound_hdr(&xdr, &hdr);
3884 if (status)
3885 goto out;
3886 status = decode_putfh(&xdr);
3887 if (status)
3888 goto out;
3889 status = decode_locku(&xdr, res);
3890out:
3891 return status;
3892}
3893
3894/*
3895 * Decode READLINK response
3896 */
3897static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, uint32_t *p, void *res)
3898{
3899 struct xdr_stream xdr;
3900 struct compound_hdr hdr;
3901 int status;
3902
3903 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3904 status = decode_compound_hdr(&xdr, &hdr);
3905 if (status)
3906 goto out;
3907 status = decode_putfh(&xdr);
3908 if (status)
3909 goto out;
3910 status = decode_readlink(&xdr, rqstp);
3911out:
3912 return status;
3913}
3914
3915/*
3916 * Decode READDIR response
3917 */
3918static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_readdir_res *res)
3919{
3920 struct xdr_stream xdr;
3921 struct compound_hdr hdr;
3922 int status;
3923
3924 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3925 status = decode_compound_hdr(&xdr, &hdr);
3926 if (status)
3927 goto out;
3928 status = decode_putfh(&xdr);
3929 if (status)
3930 goto out;
3931 status = decode_readdir(&xdr, rqstp, res);
3932out:
3933 return status;
3934}
3935
3936/*
3937 * Decode Read response
3938 */
3939static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_readres *res)
3940{
3941 struct xdr_stream xdr;
3942 struct compound_hdr hdr;
3943 int status;
3944
3945 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3946 status = decode_compound_hdr(&xdr, &hdr);
3947 if (status)
3948 goto out;
3949 status = decode_putfh(&xdr);
3950 if (status)
3951 goto out;
3952 status = decode_read(&xdr, rqstp, res);
3953 if (!status)
3954 status = res->count;
3955out:
3956 return status;
3957}
3958
3959/*
3960 * Decode WRITE response
3961 */
3962static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
3963{
3964 struct xdr_stream xdr;
3965 struct compound_hdr hdr;
3966 int status;
3967
3968 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3969 status = decode_compound_hdr(&xdr, &hdr);
3970 if (status)
3971 goto out;
3972 status = decode_putfh(&xdr);
3973 if (status)
3974 goto out;
3975 status = decode_write(&xdr, res);
3976 if (!status)
3977 status = res->count;
3978out:
3979 return status;
3980}
3981
3982/*
3983 * Decode COMMIT response
3984 */
3985static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
3986{
3987 struct xdr_stream xdr;
3988 struct compound_hdr hdr;
3989 int status;
3990
3991 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3992 status = decode_compound_hdr(&xdr, &hdr);
3993 if (status)
3994 goto out;
3995 status = decode_putfh(&xdr);
3996 if (status)
3997 goto out;
3998 status = decode_commit(&xdr, res);
3999out:
4000 return status;
4001}
4002
4003/*
4004 * FSINFO request
4005 */
4006static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
4007{
4008 struct xdr_stream xdr;
4009 struct compound_hdr hdr;
4010 int status;
4011
4012 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4013 status = decode_compound_hdr(&xdr, &hdr);
4014 if (!status)
4015 status = decode_putfh(&xdr);
4016 if (!status)
4017 status = decode_fsinfo(&xdr, fsinfo);
4018 if (!status)
4019 status = -nfs_stat_to_errno(hdr.status);
4020 return status;
4021}
4022
4023/*
4024 * PATHCONF request
4025 */
4026static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, uint32_t *p, struct nfs_pathconf *pathconf)
4027{
4028 struct xdr_stream xdr;
4029 struct compound_hdr hdr;
4030 int status;
4031
4032 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4033 status = decode_compound_hdr(&xdr, &hdr);
4034 if (!status)
4035 status = decode_putfh(&xdr);
4036 if (!status)
4037 status = decode_pathconf(&xdr, pathconf);
4038 return status;
4039}
4040
4041/*
4042 * STATFS request
4043 */
4044static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, uint32_t *p, struct nfs_fsstat *fsstat)
4045{
4046 struct xdr_stream xdr;
4047 struct compound_hdr hdr;
4048 int status;
4049
4050 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4051 status = decode_compound_hdr(&xdr, &hdr);
4052 if (!status)
4053 status = decode_putfh(&xdr);
4054 if (!status)
4055 status = decode_statfs(&xdr, fsstat);
4056 return status;
4057}
4058
4059/*
4060 * GETATTR_BITMAP request
4061 */
4062static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, uint32_t *p, struct nfs4_server_caps_res *res)
4063{
4064 struct xdr_stream xdr;
4065 struct compound_hdr hdr;
4066 int status;
4067
4068 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4069 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
4070 goto out;
4071 if ((status = decode_putfh(&xdr)) != 0)
4072 goto out;
4073 status = decode_server_caps(&xdr, res);
4074out:
4075 return status;
4076}
4077
4078/*
4079 * Decode RENEW response
4080 */
4081static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
4082{
4083 struct xdr_stream xdr;
4084 struct compound_hdr hdr;
4085 int status;
4086
4087 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4088 status = decode_compound_hdr(&xdr, &hdr);
4089 if (!status)
4090 status = decode_renew(&xdr);
4091 return status;
4092}
4093
4094/*
4095 * a SETCLIENTID request
4096 */
4097static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, uint32_t *p,
4098 struct nfs4_client *clp)
4099{
4100 struct xdr_stream xdr;
4101 struct compound_hdr hdr;
4102 int status;
4103
4104 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4105 status = decode_compound_hdr(&xdr, &hdr);
4106 if (!status)
4107 status = decode_setclientid(&xdr, clp);
4108 if (!status)
4109 status = -nfs_stat_to_errno(hdr.status);
4110 return status;
4111}
4112
4113/*
4114 * a SETCLIENTID_CONFIRM request
4115 */
4116static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
4117{
4118 struct xdr_stream xdr;
4119 struct compound_hdr hdr;
4120 int status;
4121
4122 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4123 status = decode_compound_hdr(&xdr, &hdr);
4124 if (!status)
4125 status = decode_setclientid_confirm(&xdr);
4126 if (!status)
4127 status = decode_putrootfh(&xdr);
4128 if (!status)
4129 status = decode_fsinfo(&xdr, fsinfo);
4130 if (!status)
4131 status = -nfs_stat_to_errno(hdr.status);
4132 return status;
4133}
4134
4135/*
4136 * DELEGRETURN request
4137 */
4138static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
4139{
4140 struct xdr_stream xdr;
4141 struct compound_hdr hdr;
4142 int status;
4143
4144 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4145 status = decode_compound_hdr(&xdr, &hdr);
4146 if (status == 0) {
4147 status = decode_putfh(&xdr);
4148 if (status == 0)
4149 status = decode_delegreturn(&xdr);
4150 }
4151 return status;
4152}
4153
4154uint32_t *nfs4_decode_dirent(uint32_t *p, struct nfs_entry *entry, int plus)
4155{
4156 uint32_t bitmap[2] = {0};
4157 uint32_t len;
4158
4159 if (!*p++) {
4160 if (!*p)
4161 return ERR_PTR(-EAGAIN);
4162 entry->eof = 1;
4163 return ERR_PTR(-EBADCOOKIE);
4164 }
4165
4166 entry->prev_cookie = entry->cookie;
4167 p = xdr_decode_hyper(p, &entry->cookie);
4168 entry->len = ntohl(*p++);
4169 entry->name = (const char *) p;
4170 p += XDR_QUADLEN(entry->len);
4171
4172 /*
4173 * In case the server doesn't return an inode number,
4174 * we fake one here. (We don't use inode number 0,
4175 * since glibc seems to choke on it...)
4176 */
4177 entry->ino = 1;
4178
4179 len = ntohl(*p++); /* bitmap length */
4180 if (len-- > 0) {
4181 bitmap[0] = ntohl(*p++);
4182 if (len-- > 0) {
4183 bitmap[1] = ntohl(*p++);
4184 p += len;
4185 }
4186 }
4187 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
4188 if (len > 0) {
97d312d0
MN		 4189 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
4190 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
4191 /* Ignore the return value of rdattr_error for now */
4192 p++;
4193 len--;
4194 }
1da177e4
LT		 4195 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
4196 xdr_decode_hyper(p, &entry->ino);
4197 else if (bitmap[0] == FATTR4_WORD0_FILEID)
4198 xdr_decode_hyper(p, &entry->ino);
4199 p += len;
4200 }
4201
4202 entry->eof = !p[0] && p[1];
4203 return p;
4204}
4205
4206/*
4207 * We need to translate between nfs status return values and
4208 * the local errno values which may not be the same.
4209 */
4210static struct {
4211 int stat;
4212 int errno;
4213} nfs_errtbl[] = {
4214 { NFS4_OK, 0 },
4215 { NFS4ERR_PERM, EPERM },
4216 { NFS4ERR_NOENT, ENOENT },
4217 { NFS4ERR_IO, errno_NFSERR_IO },
4218 { NFS4ERR_NXIO, ENXIO },
4219 { NFS4ERR_ACCESS, EACCES },
4220 { NFS4ERR_EXIST, EEXIST },
4221 { NFS4ERR_XDEV, EXDEV },
4222 { NFS4ERR_NOTDIR, ENOTDIR },
4223 { NFS4ERR_ISDIR, EISDIR },
4224 { NFS4ERR_INVAL, EINVAL },
4225 { NFS4ERR_FBIG, EFBIG },
4226 { NFS4ERR_NOSPC, ENOSPC },
4227 { NFS4ERR_ROFS, EROFS },
4228 { NFS4ERR_MLINK, EMLINK },
4229 { NFS4ERR_NAMETOOLONG, ENAMETOOLONG },
4230 { NFS4ERR_NOTEMPTY, ENOTEMPTY },
4231 { NFS4ERR_DQUOT, EDQUOT },
4232 { NFS4ERR_STALE, ESTALE },
4233 { NFS4ERR_BADHANDLE, EBADHANDLE },
6ebf3656
MN		 4234 { NFS4ERR_BADOWNER, EINVAL },
4235 { NFS4ERR_BADNAME, EINVAL },
1da177e4
LT		 4236 { NFS4ERR_BAD_COOKIE, EBADCOOKIE },
4237 { NFS4ERR_NOTSUPP, ENOTSUPP },
4238 { NFS4ERR_TOOSMALL, ETOOSMALL },
4239 { NFS4ERR_SERVERFAULT, ESERVERFAULT },
4240 { NFS4ERR_BADTYPE, EBADTYPE },
4241 { NFS4ERR_LOCKED, EAGAIN },
4242 { NFS4ERR_RESOURCE, EREMOTEIO },
4243 { NFS4ERR_SYMLINK, ELOOP },
4244 { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP },
4245 { NFS4ERR_DEADLOCK, EDEADLK },
4246 { NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs
4247 * to be handled by a
4248 * middle-layer.
4249 */
4250 { -1, EIO }
4251};
4252
4253/*
4254 * Convert an NFS error code to a local one.
4255 * This one is used jointly by NFSv2 and NFSv3.
4256 */
4257static int
4258nfs_stat_to_errno(int stat)
4259{
4260 int i;
4261 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
4262 if (nfs_errtbl[i].stat == stat)
4263 return nfs_errtbl[i].errno;
4264 }
4265 if (stat <= 10000 || stat > 10100) {
4266 /* The server is looney tunes. */
4267 return ESERVERFAULT;
4268 }
4269 /* If we cannot translate the error, the recovery routines should
4270 * handle it.
4271 * Note: remaining NFSv4 error codes have values > 10000, so should
4272 * not conflict with native Linux error codes.
4273 */
4274 return stat;
4275}
4276
4277#ifndef MAX
4278# define MAX(a, b) (((a) > (b))? (a) : (b))
4279#endif
4280
4281#define PROC(proc, argtype, restype) \
4282[NFSPROC4_CLNT_##proc] = { \
4283 .p_proc = NFSPROC4_COMPOUND, \
4284 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
4285 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
4286 .p_bufsiz = MAX(NFS4_##argtype##_sz,NFS4_##restype##_sz) << 2, \
4287 }
4288
4289struct rpc_procinfo nfs4_procedures[] = {
4290 PROC(READ, enc_read, dec_read),
4291 PROC(WRITE, enc_write, dec_write),
4292 PROC(COMMIT, enc_commit, dec_commit),
4293 PROC(OPEN, enc_open, dec_open),
4294 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
4295 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
4296 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
4297 PROC(CLOSE, enc_close, dec_close),
4298 PROC(SETATTR, enc_setattr, dec_setattr),
4299 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
4300 PROC(RENEW, enc_renew, dec_renew),
4301 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
4302 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
4303 PROC(LOCK, enc_lock, dec_lock),
4304 PROC(LOCKT, enc_lockt, dec_lockt),
4305 PROC(LOCKU, enc_locku, dec_locku),
4306 PROC(ACCESS, enc_access, dec_access),
4307 PROC(GETATTR, enc_getattr, dec_getattr),
4308 PROC(LOOKUP, enc_lookup, dec_lookup),
4309 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
4310 PROC(REMOVE, enc_remove, dec_remove),
4311 PROC(RENAME, enc_rename, dec_rename),
4312 PROC(LINK, enc_link, dec_link),
4313 PROC(SYMLINK, enc_symlink, dec_symlink),
4314 PROC(CREATE, enc_create, dec_create),
4315 PROC(PATHCONF, enc_pathconf, dec_pathconf),
4316 PROC(STATFS, enc_statfs, dec_statfs),
4317 PROC(READLINK, enc_readlink, dec_readlink),
4318 PROC(READDIR, enc_readdir, dec_readdir),
4319 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
4320 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
029d105e 4321 PROC(GETACL, enc_getacl, dec_getacl),
23ec6965 4322 PROC(SETACL, enc_setacl, dec_setacl),
1da177e4
LT		 4323};
4324
4325struct rpc_version nfs_version4 = {
4326 .number = 4,
4327 .nrprocs = sizeof(nfs4_procedures)/sizeof(nfs4_procedures[0]),
4328 .procs = nfs4_procedures
4329};
4330
4331/*
4332 * Local variables:
4333 * c-basic-offset: 8
4334 * End:
4335 */
Linux kernel - Deliverables
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