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NFSv4: More NFSv4 xdr cleanups
[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
0a8ea437 61static int nfs4_stat_to_errno(int);
1da177e4
LT		 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:
9f958ab8 71 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
1da177e4 72 */
9f958ab8
TM		 73#define open_owner_id_maxsz (1 + 4)
74#define lock_owner_id_maxsz (1 + 4)
9104a55d 75#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
1da177e4
LT		 76#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
77#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
78#define op_encode_hdr_maxsz (1)
79#define op_decode_hdr_maxsz (2)
9104a55d
TM		 80#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
81#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
82#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
83#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
1da177e4
LT		 84#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
85 (NFS4_FHSIZE >> 2))
86#define decode_putfh_maxsz (op_decode_hdr_maxsz)
87#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
88#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
89#define encode_getfh_maxsz (op_encode_hdr_maxsz)
90#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
91 ((3+NFS4_FHSIZE) >> 2))
96928206
BF		 92#define nfs4_fattr_bitmap_maxsz 3
93#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
1da177e4
LT		 94#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
95#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
bd625ba8
TM		 96#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
97#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
96928206
BF		 98/* This is based on getfattr, which uses the most attributes: */
99#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
bd625ba8 100 3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz))
96928206
BF		 101#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
102 nfs4_fattr_value_maxsz)
103#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
9104a55d
TM		 104#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
105 1 + 2 + 1 + \
106 nfs4_owner_maxsz + \
107 nfs4_group_maxsz + \
108 4 + 4)
1da177e4
LT		 109#define encode_savefh_maxsz (op_encode_hdr_maxsz)
110#define decode_savefh_maxsz (op_decode_hdr_maxsz)
56ae19f3
TM		 111#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
112#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
1da177e4
LT		 113#define encode_fsinfo_maxsz (op_encode_hdr_maxsz + 2)
114#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11)
115#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
116#define decode_renew_maxsz (op_decode_hdr_maxsz)
117#define encode_setclientid_maxsz \
118 (op_encode_hdr_maxsz + \
119 4 /*server->ip_addr*/ + \
120 1 /*Netid*/ + \
121 6 /*uaddr*/ + \
122 6 + (NFS4_VERIFIER_SIZE >> 2))
123#define decode_setclientid_maxsz \
124 (op_decode_hdr_maxsz + \
125 2 + \
126 1024) /* large value for CLID_INUSE */
127#define encode_setclientid_confirm_maxsz \
128 (op_encode_hdr_maxsz + \
129 3 + (NFS4_VERIFIER_SIZE >> 2))
130#define decode_setclientid_confirm_maxsz \
131 (op_decode_hdr_maxsz)
e6889620
TM		 132#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
133#define decode_lookup_maxsz (op_decode_hdr_maxsz)
2cebf828
TM		 134#define encode_share_access_maxsz \
135 (2)
9104a55d 136#define encode_createmode_maxsz (1 + encode_attrs_maxsz)
2cebf828
TM		 137#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
138#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
139#define encode_open_maxsz (op_encode_hdr_maxsz + \
140 2 + encode_share_access_maxsz + 2 + \
141 open_owner_id_maxsz + \
142 encode_opentype_maxsz + \
143 encode_claim_null_maxsz)
144#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
9104a55d 145#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
2cebf828
TM		 146 decode_ace_maxsz)
147#define decode_change_info_maxsz (5)
148#define decode_open_maxsz (op_decode_hdr_maxsz + \
9104a55d 149 decode_stateid_maxsz + \
2cebf828
TM		 150 decode_change_info_maxsz + 1 + \
151 nfs4_fattr_bitmap_maxsz + \
152 decode_delegation_maxsz)
9104a55d
TM		 153#define encode_open_confirm_maxsz \
154 (op_encode_hdr_maxsz + \
155 encode_stateid_maxsz + 1)
156#define decode_open_confirm_maxsz \
157 (op_decode_hdr_maxsz + \
158 decode_stateid_maxsz)
159#define encode_open_downgrade_maxsz \
160 (op_encode_hdr_maxsz + \
161 encode_stateid_maxsz + 1 + \
162 encode_share_access_maxsz)
163#define decode_open_downgrade_maxsz \
164 (op_decode_hdr_maxsz + \
165 decode_stateid_maxsz)
166#define encode_close_maxsz (op_encode_hdr_maxsz + \
167 1 + encode_stateid_maxsz)
168#define decode_close_maxsz (op_decode_hdr_maxsz + \
169 decode_stateid_maxsz)
170#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
171 encode_stateid_maxsz + \
172 encode_attrs_maxsz)
173#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
174 nfs4_fattr_bitmap_maxsz)
175#define encode_read_maxsz (op_encode_hdr_maxsz + \
176 encode_stateid_maxsz + 3)
177#define decode_read_maxsz (op_decode_hdr_maxsz + 2)
178#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
179 2 + encode_verifier_maxsz + 5)
180#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
181 decode_verifier_maxsz)
182#define encode_readlink_maxsz (op_encode_hdr_maxsz)
183#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
184#define encode_write_maxsz (op_encode_hdr_maxsz + \
185 encode_stateid_maxsz + 4)
186#define decode_write_maxsz (op_decode_hdr_maxsz + \
187 2 + decode_verifier_maxsz)
188#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
189#define decode_commit_maxsz (op_decode_hdr_maxsz + \
190 decode_verifier_maxsz)
1da177e4
LT		 191#define encode_remove_maxsz (op_encode_hdr_maxsz + \
192 nfs4_name_maxsz)
193#define encode_rename_maxsz (op_encode_hdr_maxsz + \
194 2 * nfs4_name_maxsz)
195#define decode_rename_maxsz (op_decode_hdr_maxsz + 5 + 5)
196#define encode_link_maxsz (op_encode_hdr_maxsz + \
197 nfs4_name_maxsz)
198#define decode_link_maxsz (op_decode_hdr_maxsz + 5)
9104a55d
TM		 199#define encode_lock_maxsz (op_encode_hdr_maxsz + \
200 7 + \
201 1 + encode_stateid_maxsz + 8)
202#define decode_lock_denied_maxsz \
203 (8 + decode_lockowner_maxsz)
204#define decode_lock_maxsz (op_decode_hdr_maxsz + \
205 decode_lock_denied_maxsz)
206#define encode_lockt_maxsz (op_encode_hdr_maxsz + 12)
207#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
208 decode_lock_denied_maxsz)
209#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
210 encode_stateid_maxsz + \
211 4)
212#define decode_locku_maxsz (op_decode_hdr_maxsz + \
213 decode_stateid_maxsz)
214#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
215#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
1da177e4
LT		 216#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
217 1 + nfs4_name_maxsz + \
94a6d753 218 1 + \
96928206 219 nfs4_fattr_maxsz)
1da177e4
LT		 220#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
221#define encode_create_maxsz (op_encode_hdr_maxsz + \
9104a55d
TM		 222 1 + 2 + nfs4_name_maxsz + \
223 encode_attrs_maxsz)
2cebf828
TM		 224#define decode_create_maxsz (op_decode_hdr_maxsz + \
225 decode_change_info_maxsz + \
226 nfs4_fattr_bitmap_maxsz)
9104a55d
TM		 227#define encode_statfs_maxsz (encode_getattr_maxsz)
228#define decode_statfs_maxsz (decode_getattr_maxsz)
1da177e4
LT		 229#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
230#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
9104a55d
TM		 231#define encode_getacl_maxsz (encode_getattr_maxsz)
232#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
233 nfs4_fattr_bitmap_maxsz + 1)
234#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
235 encode_stateid_maxsz + 3)
236#define decode_setacl_maxsz (decode_setattr_maxsz)
e6889620
TM		 237#define encode_fs_locations_maxsz \
238 (encode_getattr_maxsz)
239#define decode_fs_locations_maxsz \
240 (0)
1da177e4
LT		 241#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
242#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
243#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
244 encode_putfh_maxsz + \
9104a55d 245 encode_read_maxsz)
1da177e4
LT		 246#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
247 decode_putfh_maxsz + \
9104a55d 248 decode_read_maxsz)
1da177e4
LT		 249#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
250 encode_putfh_maxsz + \
9104a55d 251 encode_readlink_maxsz)
1da177e4
LT		 252#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
253 decode_putfh_maxsz + \
9104a55d 254 decode_readlink_maxsz)
1da177e4
LT		 255#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
256 encode_putfh_maxsz + \
9104a55d 257 encode_readdir_maxsz)
1da177e4
LT		 258#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
259 decode_putfh_maxsz + \
9104a55d 260 decode_readdir_maxsz)
1da177e4
LT		 261#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
262 encode_putfh_maxsz + \
9104a55d 263 encode_write_maxsz + \
4f9838c7 264 encode_getattr_maxsz)
1da177e4
LT		 265#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
266 decode_putfh_maxsz + \
9104a55d 267 decode_write_maxsz + \
4f9838c7 268 decode_getattr_maxsz)
1da177e4
LT		 269#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
270 encode_putfh_maxsz + \
9104a55d 271 encode_commit_maxsz + \
4f9838c7 272 encode_getattr_maxsz)
1da177e4
LT		 273#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
274 decode_putfh_maxsz + \
9104a55d 275 decode_commit_maxsz + \
4f9838c7 276 decode_getattr_maxsz)
1da177e4 277#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
2cebf828
TM		 278 encode_putfh_maxsz + \
279 encode_savefh_maxsz + \
280 encode_open_maxsz + \
281 encode_getfh_maxsz + \
282 encode_getattr_maxsz + \
283 encode_restorefh_maxsz + \
284 encode_getattr_maxsz)
1da177e4 285#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
2cebf828
TM		 286 decode_putfh_maxsz + \
287 decode_savefh_maxsz + \
288 decode_open_maxsz + \
289 decode_getfh_maxsz + \
290 decode_getattr_maxsz + \
291 decode_restorefh_maxsz + \
292 decode_getattr_maxsz)
9104a55d
TM		 293#define NFS4_enc_open_confirm_sz \
294 (compound_encode_hdr_maxsz + \
295 encode_putfh_maxsz + \
296 encode_open_confirm_maxsz)
297#define NFS4_dec_open_confirm_sz \
298 (compound_decode_hdr_maxsz + \
299 decode_putfh_maxsz + \
300 decode_open_confirm_maxsz)
1da177e4
LT		 301#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
302 encode_putfh_maxsz + \
2cebf828
TM		 303 encode_open_maxsz + \
304 encode_getattr_maxsz)
1da177e4
LT		 305#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
306 decode_putfh_maxsz + \
2cebf828
TM		 307 decode_open_maxsz + \
308 decode_getattr_maxsz)
1da177e4
LT		 309#define NFS4_enc_open_downgrade_sz \
310 (compound_encode_hdr_maxsz + \
9104a55d
TM		 311 encode_putfh_maxsz + \
312 encode_open_downgrade_maxsz + \
313 encode_getattr_maxsz)
1da177e4
LT		 314#define NFS4_dec_open_downgrade_sz \
315 (compound_decode_hdr_maxsz + \
9104a55d
TM		 316 decode_putfh_maxsz + \
317 decode_open_downgrade_maxsz + \
318 decode_getattr_maxsz)
319#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
320 encode_putfh_maxsz + \
321 encode_close_maxsz + \
322 encode_getattr_maxsz)
323#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
324 decode_putfh_maxsz + \
325 decode_close_maxsz + \
326 decode_getattr_maxsz)
327#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
328 encode_putfh_maxsz + \
329 encode_setattr_maxsz + \
330 encode_getattr_maxsz)
331#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
332 decode_putfh_maxsz + \
333 decode_setattr_maxsz + \
334 decode_getattr_maxsz)
1da177e4
LT		 335#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
336 encode_putfh_maxsz + \
337 encode_fsinfo_maxsz)
338#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
339 decode_putfh_maxsz + \
340 decode_fsinfo_maxsz)
341#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
342 encode_renew_maxsz)
343#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
344 decode_renew_maxsz)
345#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
346 encode_setclientid_maxsz)
347#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
348 decode_setclientid_maxsz)
349#define NFS4_enc_setclientid_confirm_sz \
350 (compound_encode_hdr_maxsz + \
351 encode_setclientid_confirm_maxsz + \
352 encode_putrootfh_maxsz + \
353 encode_fsinfo_maxsz)
354#define NFS4_dec_setclientid_confirm_sz \
355 (compound_decode_hdr_maxsz + \
356 decode_setclientid_confirm_maxsz + \
357 decode_putrootfh_maxsz + \
358 decode_fsinfo_maxsz)
359#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
360 encode_putfh_maxsz + \
9104a55d 361 encode_lock_maxsz)
1da177e4
LT		 362#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
363 decode_putfh_maxsz + \
9104a55d 364 decode_lock_maxsz)
1da177e4
LT		 365#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
366 encode_putfh_maxsz + \
9104a55d
TM		 367 encode_lockt_maxsz)
368#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
369 decode_putfh_maxsz + \
370 decode_lockt_maxsz)
1da177e4
LT		 371#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
372 encode_putfh_maxsz + \
9104a55d 373 encode_locku_maxsz)
1da177e4
LT		 374#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
375 decode_putfh_maxsz + \
9104a55d 376 decode_locku_maxsz)
1da177e4
LT		 377#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
378 encode_putfh_maxsz + \
9104a55d 379 encode_access_maxsz)
1da177e4
LT		 380#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
381 decode_putfh_maxsz + \
9104a55d 382 decode_access_maxsz)
1da177e4
LT		 383#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
384 encode_putfh_maxsz + \
385 encode_getattr_maxsz)
386#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
387 decode_putfh_maxsz + \
388 decode_getattr_maxsz)
389#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
390 encode_putfh_maxsz + \
391 encode_lookup_maxsz + \
392 encode_getattr_maxsz + \
393 encode_getfh_maxsz)
394#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
395 decode_putfh_maxsz + \
e6889620 396 decode_lookup_maxsz + \
1da177e4
LT		 397 decode_getattr_maxsz + \
398 decode_getfh_maxsz)
399#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
400 encode_putrootfh_maxsz + \
401 encode_getattr_maxsz + \
402 encode_getfh_maxsz)
403#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
404 decode_putrootfh_maxsz + \
405 decode_getattr_maxsz + \
406 decode_getfh_maxsz)
407#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
408 encode_putfh_maxsz + \
16e42959
TM		 409 encode_remove_maxsz + \
410 encode_getattr_maxsz)
1da177e4
LT		 411#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
412 decode_putfh_maxsz + \
16e42959
TM		 413 op_decode_hdr_maxsz + 5 + \
414 decode_getattr_maxsz)
1da177e4
LT		 415#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
416 encode_putfh_maxsz + \
417 encode_savefh_maxsz + \
418 encode_putfh_maxsz + \
6caf2c82
TM		 419 encode_rename_maxsz + \
420 encode_getattr_maxsz + \
421 encode_restorefh_maxsz + \
422 encode_getattr_maxsz)
1da177e4
LT		 423#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
424 decode_putfh_maxsz + \
425 decode_savefh_maxsz + \
426 decode_putfh_maxsz + \
6caf2c82
TM		 427 decode_rename_maxsz + \
428 decode_getattr_maxsz + \
429 decode_restorefh_maxsz + \
430 decode_getattr_maxsz)
1da177e4
LT		 431#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
432 encode_putfh_maxsz + \
433 encode_savefh_maxsz + \
434 encode_putfh_maxsz + \
91ba2eee
TM		 435 encode_link_maxsz + \
436 decode_getattr_maxsz + \
437 encode_restorefh_maxsz + \
438 decode_getattr_maxsz)
1da177e4
LT		 439#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
440 decode_putfh_maxsz + \
441 decode_savefh_maxsz + \
442 decode_putfh_maxsz + \
91ba2eee
TM		 443 decode_link_maxsz + \
444 decode_getattr_maxsz + \
445 decode_restorefh_maxsz + \
446 decode_getattr_maxsz)
1da177e4
LT		 447#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
448 encode_putfh_maxsz + \
449 encode_symlink_maxsz + \
450 encode_getattr_maxsz + \
451 encode_getfh_maxsz)
452#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
453 decode_putfh_maxsz + \
454 decode_symlink_maxsz + \
455 decode_getattr_maxsz + \
456 decode_getfh_maxsz)
457#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
458 encode_putfh_maxsz + \
56ae19f3 459 encode_savefh_maxsz + \
1da177e4 460 encode_create_maxsz + \
56ae19f3 461 encode_getfh_maxsz + \
1da177e4 462 encode_getattr_maxsz + \
56ae19f3
TM		 463 encode_restorefh_maxsz + \
464 encode_getattr_maxsz)
1da177e4
LT		 465#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
466 decode_putfh_maxsz + \
56ae19f3 467 decode_savefh_maxsz + \
1da177e4 468 decode_create_maxsz + \
56ae19f3 469 decode_getfh_maxsz + \
1da177e4 470 decode_getattr_maxsz + \
56ae19f3
TM		 471 decode_restorefh_maxsz + \
472 decode_getattr_maxsz)
1da177e4
LT		 473#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
474 encode_putfh_maxsz + \
475 encode_getattr_maxsz)
476#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
477 decode_putfh_maxsz + \
478 decode_getattr_maxsz)
479#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
480 encode_putfh_maxsz + \
9104a55d 481 encode_statfs_maxsz)
1da177e4
LT		 482#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
483 decode_putfh_maxsz + \
9104a55d 484 decode_statfs_maxsz)
1da177e4 485#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
ab91f264 486 encode_putfh_maxsz + \
1da177e4
LT		 487 encode_getattr_maxsz)
488#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
ab91f264 489 decode_putfh_maxsz + \
1da177e4
LT		 490 decode_getattr_maxsz)
491#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
492 encode_putfh_maxsz + \
fa178f29
TM		 493 encode_delegreturn_maxsz + \
494 encode_getattr_maxsz)
1da177e4 495#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
fa178f29
TM		 496 decode_delegreturn_maxsz + \
497 decode_getattr_maxsz)
029d105e
BF		 498#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
499 encode_putfh_maxsz + \
9104a55d 500 encode_getacl_maxsz)
029d105e
BF		 501#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
502 decode_putfh_maxsz + \
9104a55d 503 decode_getacl_maxsz)
23ec6965
BF		 504#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
505 encode_putfh_maxsz + \
9104a55d 506 encode_setacl_maxsz)
23ec6965
BF		 507#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
508 decode_putfh_maxsz + \
9104a55d 509 decode_setacl_maxsz)
683b57b4
TM		 510#define NFS4_enc_fs_locations_sz \
511 (compound_encode_hdr_maxsz + \
512 encode_putfh_maxsz + \
e6889620
TM		 513 encode_lookup_maxsz + \
514 encode_fs_locations_maxsz)
683b57b4
TM		 515#define NFS4_dec_fs_locations_sz \
516 (compound_decode_hdr_maxsz + \
517 decode_putfh_maxsz + \
e6889620
TM		 518 decode_lookup_maxsz + \
519 decode_fs_locations_maxsz)
1da177e4
LT		 520
521static struct {
522 unsigned int mode;
523 unsigned int nfs2type;
524} nfs_type2fmt[] = {
525 { 0, NFNON },
526 { S_IFREG, NFREG },
527 { S_IFDIR, NFDIR },
528 { S_IFBLK, NFBLK },
529 { S_IFCHR, NFCHR },
530 { S_IFLNK, NFLNK },
531 { S_IFSOCK, NFSOCK },
532 { S_IFIFO, NFFIFO },
533 { 0, NFNON },
534 { 0, NFNON },
535};
536
537struct compound_hdr {
538 int32_t status;
539 uint32_t nops;
540 uint32_t taglen;
541 char * tag;
542};
543
544/*
545 * START OF "GENERIC" ENCODE ROUTINES.
546 * These may look a little ugly since they are imported from a "generic"
547 * set of XDR encode/decode routines which are intended to be shared by
548 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
549 *
550 * If the pain of reading these is too great, it should be a straightforward
551 * task to translate them into Linux-specific versions which are more
552 * consistent with the style used in NFSv2/v3...
553 */
554#define WRITE32(n) *p++ = htonl(n)
555#define WRITE64(n) do { \
556 *p++ = htonl((uint32_t)((n) >> 32)); \
557 *p++ = htonl((uint32_t)(n)); \
558} while (0)
559#define WRITEMEM(ptr,nbytes) do { \
560 p = xdr_encode_opaque_fixed(p, ptr, nbytes); \
561} while (0)
562
563#define RESERVE_SPACE(nbytes) do { \
564 p = xdr_reserve_space(xdr, nbytes); \
565 if (!p) printk("RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __FUNCTION__); \
566 BUG_ON(!p); \
567} while (0)
568
569static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
570{
8687b63a 571 __be32 *p;
1da177e4
LT		 572
573 p = xdr_reserve_space(xdr, 4 + len);
574 BUG_ON(p == NULL);
575 xdr_encode_opaque(p, str, len);
576}
577
578static int encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
579{
8687b63a 580 __be32 *p;
1da177e4
LT		 581
582 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
583 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
584 RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
585 WRITE32(hdr->taglen);
586 WRITEMEM(hdr->tag, hdr->taglen);
587 WRITE32(NFS4_MINOR_VERSION);
588 WRITE32(hdr->nops);
589 return 0;
590}
591
592static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
593{
8687b63a 594 __be32 *p;
1da177e4
LT		 595
596 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
597 BUG_ON(p == NULL);
598 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
599}
600
601static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
602{
603 char owner_name[IDMAP_NAMESZ];
604 char owner_group[IDMAP_NAMESZ];
605 int owner_namelen = 0;
606 int owner_grouplen = 0;
8687b63a
AV		 607 __be32 *p;
608 __be32 *q;
1da177e4
LT		 609 int len;
610 uint32_t bmval0 = 0;
611 uint32_t bmval1 = 0;
612 int status;
613
614 /*
615 * We reserve enough space to write the entire attribute buffer at once.
616 * In the worst-case, this would be
617 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
618 * = 36 bytes, plus any contribution from variable-length fields
23ec6965 619 * such as owner/group.
1da177e4
LT		 620 */
621 len = 16;
622
623 /* Sigh */
624 if (iap->ia_valid & ATTR_SIZE)
625 len += 8;
626 if (iap->ia_valid & ATTR_MODE)
627 len += 4;
628 if (iap->ia_valid & ATTR_UID) {
7539bbab 629 owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name);
1da177e4
LT		 630 if (owner_namelen < 0) {
631 printk(KERN_WARNING "nfs: couldn't resolve uid %d to string\n",
632 iap->ia_uid);
633 /* XXX */
634 strcpy(owner_name, "nobody");
635 owner_namelen = sizeof("nobody") - 1;
636 /* goto out; */
637 }
638 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
639 }
640 if (iap->ia_valid & ATTR_GID) {
7539bbab 641 owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group);
1da177e4
LT		 642 if (owner_grouplen < 0) {
643 printk(KERN_WARNING "nfs4: couldn't resolve gid %d to string\n",
644 iap->ia_gid);
645 strcpy(owner_group, "nobody");
646 owner_grouplen = sizeof("nobody") - 1;
647 /* goto out; */
648 }
649 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
650 }
651 if (iap->ia_valid & ATTR_ATIME_SET)
652 len += 16;
653 else if (iap->ia_valid & ATTR_ATIME)
654 len += 4;
655 if (iap->ia_valid & ATTR_MTIME_SET)
656 len += 16;
657 else if (iap->ia_valid & ATTR_MTIME)
658 len += 4;
659 RESERVE_SPACE(len);
660
661 /*
662 * We write the bitmap length now, but leave the bitmap and the attribute
663 * buffer length to be backfilled at the end of this routine.
664 */
665 WRITE32(2);
666 q = p;
667 p += 3;
668
669 if (iap->ia_valid & ATTR_SIZE) {
670 bmval0 |= FATTR4_WORD0_SIZE;
671 WRITE64(iap->ia_size);
672 }
673 if (iap->ia_valid & ATTR_MODE) {
674 bmval1 |= FATTR4_WORD1_MODE;
cf3fff54 675 WRITE32(iap->ia_mode & S_IALLUGO);
1da177e4
LT		 676 }
677 if (iap->ia_valid & ATTR_UID) {
678 bmval1 |= FATTR4_WORD1_OWNER;
679 WRITE32(owner_namelen);
680 WRITEMEM(owner_name, owner_namelen);
681 }
682 if (iap->ia_valid & ATTR_GID) {
683 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
684 WRITE32(owner_grouplen);
685 WRITEMEM(owner_group, owner_grouplen);
686 }
687 if (iap->ia_valid & ATTR_ATIME_SET) {
688 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
689 WRITE32(NFS4_SET_TO_CLIENT_TIME);
690 WRITE32(0);
691 WRITE32(iap->ia_mtime.tv_sec);
692 WRITE32(iap->ia_mtime.tv_nsec);
693 }
694 else if (iap->ia_valid & ATTR_ATIME) {
695 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
696 WRITE32(NFS4_SET_TO_SERVER_TIME);
697 }
698 if (iap->ia_valid & ATTR_MTIME_SET) {
699 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
700 WRITE32(NFS4_SET_TO_CLIENT_TIME);
701 WRITE32(0);
702 WRITE32(iap->ia_mtime.tv_sec);
703 WRITE32(iap->ia_mtime.tv_nsec);
704 }
705 else if (iap->ia_valid & ATTR_MTIME) {
706 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
707 WRITE32(NFS4_SET_TO_SERVER_TIME);
708 }
709
710 /*
711 * Now we backfill the bitmap and the attribute buffer length.
712 */
713 if (len != ((char *)p - (char *)q) + 4) {
714 printk ("encode_attr: Attr length calculation error! %u != %Zu\n",
715 len, ((char *)p - (char *)q) + 4);
716 BUG();
717 }
718 len = (char *)p - (char *)q - 12;
719 *q++ = htonl(bmval0);
720 *q++ = htonl(bmval1);
721 *q++ = htonl(len);
722
723 status = 0;
724/* out: */
725 return status;
726}
727
728static int encode_access(struct xdr_stream *xdr, u32 access)
729{
8687b63a 730 __be32 *p;
1da177e4
LT		 731
732 RESERVE_SPACE(8);
733 WRITE32(OP_ACCESS);
734 WRITE32(access);
735
736 return 0;
737}
738
739static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
740{
8687b63a 741 __be32 *p;
1da177e4 742
8ae20abd 743 RESERVE_SPACE(8+NFS4_STATEID_SIZE);
1da177e4 744 WRITE32(OP_CLOSE);
cee54fc9 745 WRITE32(arg->seqid->sequence->counter);
8ae20abd 746 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
1da177e4
LT		 747
748 return 0;
749}
750
751static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args)
752{
8687b63a 753 __be32 *p;
1da177e4
LT		 754
755 RESERVE_SPACE(16);
756 WRITE32(OP_COMMIT);
757 WRITE64(args->offset);
758 WRITE32(args->count);
759
760 return 0;
761}
762
763static int encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create)
764{
8687b63a 765 __be32 *p;
1da177e4
LT		 766
767 RESERVE_SPACE(8);
768 WRITE32(OP_CREATE);
769 WRITE32(create->ftype);
770
771 switch (create->ftype) {
772 case NF4LNK:
94a6d753
CL		 773 RESERVE_SPACE(4);
774 WRITE32(create->u.symlink.len);
775 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
1da177e4
LT		 776 break;
777
778 case NF4BLK: case NF4CHR:
779 RESERVE_SPACE(8);
780 WRITE32(create->u.device.specdata1);
781 WRITE32(create->u.device.specdata2);
782 break;
783
784 default:
785 break;
786 }
787
788 RESERVE_SPACE(4 + create->name->len);
789 WRITE32(create->name->len);
790 WRITEMEM(create->name->name, create->name->len);
791
792 return encode_attrs(xdr, create->attrs, create->server);
793}
794
795static int encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap)
796{
8687b63a 797 __be32 *p;
1da177e4
LT		 798
799 RESERVE_SPACE(12);
800 WRITE32(OP_GETATTR);
801 WRITE32(1);
802 WRITE32(bitmap);
803 return 0;
804}
805
806static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1)
807{
8687b63a 808 __be32 *p;
1da177e4
LT		 809
810 RESERVE_SPACE(16);
811 WRITE32(OP_GETATTR);
812 WRITE32(2);
813 WRITE32(bm0);
814 WRITE32(bm1);
815 return 0;
816}
817
818static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
819{
1da177e4
LT		 820 return encode_getattr_two(xdr,
821 bitmask[0] & nfs4_fattr_bitmap[0],
822 bitmask[1] & nfs4_fattr_bitmap[1]);
823}
824
825static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask)
826{
1da177e4
LT		 827 return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
828 bitmask[1] & nfs4_fsinfo_bitmap[1]);
829}
830
830b8e33
MN		 831static int encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask)
832{
833 return encode_getattr_two(xdr,
834 bitmask[0] & nfs4_fs_locations_bitmap[0],
835 bitmask[1] & nfs4_fs_locations_bitmap[1]);
836}
837
1da177e4
LT		 838static int encode_getfh(struct xdr_stream *xdr)
839{
8687b63a 840 __be32 *p;
1da177e4
LT		 841
842 RESERVE_SPACE(4);
843 WRITE32(OP_GETFH);
844
845 return 0;
846}
847
848static int encode_link(struct xdr_stream *xdr, const struct qstr *name)
849{
8687b63a 850 __be32 *p;
1da177e4
LT		 851
852 RESERVE_SPACE(8 + name->len);
853 WRITE32(OP_LINK);
854 WRITE32(name->len);
855 WRITEMEM(name->name, name->len);
856
857 return 0;
858}
859
911d1aaf
TM		 860static inline int nfs4_lock_type(struct file_lock *fl, int block)
861{
862 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
863 return block ? NFS4_READW_LT : NFS4_READ_LT;
864 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
865}
866
867static inline uint64_t nfs4_lock_length(struct file_lock *fl)
868{
869 if (fl->fl_end == OFFSET_MAX)
870 return ~(uint64_t)0;
871 return fl->fl_end - fl->fl_start + 1;
872}
873
1da177e4
LT		 874/*
875 * opcode,type,reclaim,offset,length,new_lock_owner = 32
876 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
877 */
911d1aaf 878static int encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args)
1da177e4 879{
8687b63a 880 __be32 *p;
1da177e4
LT		 881
882 RESERVE_SPACE(32);
883 WRITE32(OP_LOCK);
911d1aaf
TM		 884 WRITE32(nfs4_lock_type(args->fl, args->block));
885 WRITE32(args->reclaim);
886 WRITE64(args->fl->fl_start);
887 WRITE64(nfs4_lock_length(args->fl));
888 WRITE32(args->new_lock_owner);
889 if (args->new_lock_owner){
9f958ab8 890 RESERVE_SPACE(4+NFS4_STATEID_SIZE+32);
911d1aaf 891 WRITE32(args->open_seqid->sequence->counter);
8ae20abd 892 WRITEMEM(args->open_stateid->data, NFS4_STATEID_SIZE);
911d1aaf
TM		 893 WRITE32(args->lock_seqid->sequence->counter);
894 WRITE64(args->lock_owner.clientid);
9f958ab8
TM		 895 WRITE32(16);
896 WRITEMEM("lock id:", 8);
897 WRITE64(args->lock_owner.id);
1da177e4
LT		 898 }
899 else {
8ae20abd
TM		 900 RESERVE_SPACE(NFS4_STATEID_SIZE+4);
901 WRITEMEM(args->lock_stateid->data, NFS4_STATEID_SIZE);
911d1aaf 902 WRITE32(args->lock_seqid->sequence->counter);
1da177e4
LT		 903 }
904
905 return 0;
906}
907
911d1aaf 908static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args)
1da177e4 909{
8687b63a 910 __be32 *p;
1da177e4 911
9f958ab8 912 RESERVE_SPACE(52);
1da177e4 913 WRITE32(OP_LOCKT);
911d1aaf
TM		 914 WRITE32(nfs4_lock_type(args->fl, 0));
915 WRITE64(args->fl->fl_start);
916 WRITE64(nfs4_lock_length(args->fl));
917 WRITE64(args->lock_owner.clientid);
9f958ab8
TM		 918 WRITE32(16);
919 WRITEMEM("lock id:", 8);
920 WRITE64(args->lock_owner.id);
1da177e4
LT		 921
922 return 0;
923}
924
911d1aaf 925static int encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args)
1da177e4 926{
8687b63a 927 __be32 *p;
1da177e4 928
8ae20abd 929 RESERVE_SPACE(12+NFS4_STATEID_SIZE+16);
1da177e4 930 WRITE32(OP_LOCKU);
911d1aaf
TM		 931 WRITE32(nfs4_lock_type(args->fl, 0));
932 WRITE32(args->seqid->sequence->counter);
8ae20abd 933 WRITEMEM(args->stateid->data, NFS4_STATEID_SIZE);
911d1aaf
TM		 934 WRITE64(args->fl->fl_start);
935 WRITE64(nfs4_lock_length(args->fl));
1da177e4
LT		 936
937 return 0;
938}
939
940static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name)
941{
942 int len = name->len;
8687b63a 943 __be32 *p;
1da177e4
LT		 944
945 RESERVE_SPACE(8 + len);
946 WRITE32(OP_LOOKUP);
947 WRITE32(len);
948 WRITEMEM(name->name, len);
949
950 return 0;
951}
952
953static void encode_share_access(struct xdr_stream *xdr, int open_flags)
954{
8687b63a 955 __be32 *p;
1da177e4
LT		 956
957 RESERVE_SPACE(8);
958 switch (open_flags & (FMODE_READ|FMODE_WRITE)) {
959 case FMODE_READ:
960 WRITE32(NFS4_SHARE_ACCESS_READ);
961 break;
962 case FMODE_WRITE:
963 WRITE32(NFS4_SHARE_ACCESS_WRITE);
964 break;
965 case FMODE_READ|FMODE_WRITE:
966 WRITE32(NFS4_SHARE_ACCESS_BOTH);
967 break;
968 default:
969 BUG();
970 }
971 WRITE32(0); /* for linux, share_deny = 0 always */
972}
973
974static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
975{
8687b63a 976 __be32 *p;
1da177e4
LT		 977 /*
978 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
979 * owner 4 = 32
980 */
981 RESERVE_SPACE(8);
982 WRITE32(OP_OPEN);
cee54fc9 983 WRITE32(arg->seqid->sequence->counter);
1da177e4 984 encode_share_access(xdr, arg->open_flags);
9f958ab8 985 RESERVE_SPACE(28);
1da177e4 986 WRITE64(arg->clientid);
9f958ab8
TM		 987 WRITE32(16);
988 WRITEMEM("open id:", 8);
989 WRITE64(arg->id);
1da177e4
LT		 990}
991
992static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
993{
8687b63a 994 __be32 *p;
1da177e4
LT		 995
996 RESERVE_SPACE(4);
997 switch(arg->open_flags & O_EXCL) {
998 case 0:
999 WRITE32(NFS4_CREATE_UNCHECKED);
1000 encode_attrs(xdr, arg->u.attrs, arg->server);
1001 break;
1002 default:
1003 WRITE32(NFS4_CREATE_EXCLUSIVE);
1004 encode_nfs4_verifier(xdr, &arg->u.verifier);
1005 }
1006}
1007
1008static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1009{
8687b63a 1010 __be32 *p;
1da177e4
LT		 1011
1012 RESERVE_SPACE(4);
1013 switch (arg->open_flags & O_CREAT) {
1014 case 0:
1015 WRITE32(NFS4_OPEN_NOCREATE);
1016 break;
1017 default:
1018 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
1019 WRITE32(NFS4_OPEN_CREATE);
1020 encode_createmode(xdr, arg);
1021 }
1022}
1023
1024static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type)
1025{
8687b63a 1026 __be32 *p;
1da177e4
LT		 1027
1028 RESERVE_SPACE(4);
1029 switch (delegation_type) {
1030 case 0:
1031 WRITE32(NFS4_OPEN_DELEGATE_NONE);
1032 break;
1033 case FMODE_READ:
1034 WRITE32(NFS4_OPEN_DELEGATE_READ);
1035 break;
1036 case FMODE_WRITE|FMODE_READ:
1037 WRITE32(NFS4_OPEN_DELEGATE_WRITE);
1038 break;
1039 default:
1040 BUG();
1041 }
1042}
1043
1044static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1045{
8687b63a 1046 __be32 *p;
1da177e4
LT		 1047
1048 RESERVE_SPACE(4);
1049 WRITE32(NFS4_OPEN_CLAIM_NULL);
1050 encode_string(xdr, name->len, name->name);
1051}
1052
1053static inline void encode_claim_previous(struct xdr_stream *xdr, int type)
1054{
8687b63a 1055 __be32 *p;
1da177e4
LT		 1056
1057 RESERVE_SPACE(4);
1058 WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
1059 encode_delegation_type(xdr, type);
1060}
1061
1062static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1063{
8687b63a 1064 __be32 *p;
1da177e4 1065
8ae20abd 1066 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1da177e4 1067 WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
8ae20abd 1068 WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
1da177e4
LT		 1069 encode_string(xdr, name->len, name->name);
1070}
1071
1072static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1073{
1074 encode_openhdr(xdr, arg);
1075 encode_opentype(xdr, arg);
1076 switch (arg->claim) {
1077 case NFS4_OPEN_CLAIM_NULL:
1078 encode_claim_null(xdr, arg->name);
1079 break;
1080 case NFS4_OPEN_CLAIM_PREVIOUS:
1081 encode_claim_previous(xdr, arg->u.delegation_type);
1082 break;
1083 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1084 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1085 break;
1086 default:
1087 BUG();
1088 }
1089 return 0;
1090}
1091
1092static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg)
1093{
8687b63a 1094 __be32 *p;
1da177e4 1095
8ae20abd 1096 RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
1da177e4 1097 WRITE32(OP_OPEN_CONFIRM);
8ae20abd 1098 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
cee54fc9 1099 WRITE32(arg->seqid->sequence->counter);
1da177e4
LT		 1100
1101 return 0;
1102}
1103
1104static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
1105{
8687b63a 1106 __be32 *p;
1da177e4 1107
8ae20abd 1108 RESERVE_SPACE(4+NFS4_STATEID_SIZE+4);
1da177e4 1109 WRITE32(OP_OPEN_DOWNGRADE);
8ae20abd 1110 WRITEMEM(arg->stateid->data, NFS4_STATEID_SIZE);
cee54fc9 1111 WRITE32(arg->seqid->sequence->counter);
1da177e4
LT		 1112 encode_share_access(xdr, arg->open_flags);
1113 return 0;
1114}
1115
1116static int
1117encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh)
1118{
1119 int len = fh->size;
8687b63a 1120 __be32 *p;
1da177e4
LT		 1121
1122 RESERVE_SPACE(8 + len);
1123 WRITE32(OP_PUTFH);
1124 WRITE32(len);
1125 WRITEMEM(fh->data, len);
1126
1127 return 0;
1128}
1129
1130static int encode_putrootfh(struct xdr_stream *xdr)
1131{
8687b63a 1132 __be32 *p;
1da177e4
LT		 1133
1134 RESERVE_SPACE(4);
1135 WRITE32(OP_PUTROOTFH);
1136
1137 return 0;
1138}
1139
1140static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
1141{
1da177e4 1142 nfs4_stateid stateid;
8687b63a 1143 __be32 *p;
1da177e4 1144
8ae20abd 1145 RESERVE_SPACE(NFS4_STATEID_SIZE);
1da177e4
LT		 1146 if (ctx->state != NULL) {
1147 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
8ae20abd 1148 WRITEMEM(stateid.data, NFS4_STATEID_SIZE);
1da177e4 1149 } else
8ae20abd 1150 WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
1da177e4
LT		 1151}
1152
1153static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
1154{
8687b63a 1155 __be32 *p;
1da177e4
LT		 1156
1157 RESERVE_SPACE(4);
1158 WRITE32(OP_READ);
1159
1160 encode_stateid(xdr, args->context);
1161
1162 RESERVE_SPACE(12);
1163 WRITE64(args->offset);
1164 WRITE32(args->count);
1165
1166 return 0;
1167}
1168
1169static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req)
1170{
1be27f36 1171 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
97d312d0
MN		 1172 uint32_t attrs[2] = {
1173 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1174 FATTR4_WORD1_MOUNTED_ON_FILEID,
1175 };
1da177e4 1176 int replen;
8687b63a 1177 __be32 *p;
1da177e4 1178
8ae20abd 1179 RESERVE_SPACE(12+NFS4_VERIFIER_SIZE+20);
1da177e4
LT		 1180 WRITE32(OP_READDIR);
1181 WRITE64(readdir->cookie);
8ae20abd 1182 WRITEMEM(readdir->verifier.data, NFS4_VERIFIER_SIZE);
1da177e4
LT		 1183 WRITE32(readdir->count >> 1); /* We're not doing readdirplus */
1184 WRITE32(readdir->count);
1185 WRITE32(2);
97d312d0
MN		 1186 /* Switch to mounted_on_fileid if the server supports it */
1187 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1188 attrs[0] &= ~FATTR4_WORD0_FILEID;
1189 else
1190 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1191 WRITE32(attrs[0] & readdir->bitmask[0]);
1192 WRITE32(attrs[1] & readdir->bitmask[1]);
eadf4598
TM		 1193 dprintk("%s: cookie = %Lu, verifier = 0x%x%x, bitmap = 0x%x%x\n",
1194 __FUNCTION__,
1195 (unsigned long long)readdir->cookie,
1196 ((u32 *)readdir->verifier.data)[0],
1197 ((u32 *)readdir->verifier.data)[1],
1198 attrs[0] & readdir->bitmask[0],
1199 attrs[1] & readdir->bitmask[1]);
1da177e4
LT		 1200
1201 /* set up reply kvec
1202 * toplevel_status + taglen + rescount + OP_PUTFH + status
1203 * + OP_READDIR + status + verifer(2) = 9
1204 */
1205 replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2;
1206 xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages,
1207 readdir->pgbase, readdir->count);
eadf4598
TM		 1208 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
1209 __FUNCTION__, replen, readdir->pages,
1210 readdir->pgbase, readdir->count);
1da177e4
LT		 1211
1212 return 0;
1213}
1214
1215static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req)
1216{
1be27f36 1217 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
1da177e4 1218 unsigned int replen;
8687b63a 1219 __be32 *p;
1da177e4
LT		 1220
1221 RESERVE_SPACE(4);
1222 WRITE32(OP_READLINK);
1223
1224 /* set up reply kvec
1225 * toplevel_status + taglen + rescount + OP_PUTFH + status
1226 * + OP_READLINK + status + string length = 8
1227 */
1228 replen = (RPC_REPHDRSIZE + auth->au_rslack + 8) << 2;
1229 xdr_inline_pages(&req->rq_rcv_buf, replen, readlink->pages,
1230 readlink->pgbase, readlink->pglen);
1231
1232 return 0;
1233}
1234
1235static int encode_remove(struct xdr_stream *xdr, const struct qstr *name)
1236{
8687b63a 1237 __be32 *p;
1da177e4
LT		 1238
1239 RESERVE_SPACE(8 + name->len);
1240 WRITE32(OP_REMOVE);
1241 WRITE32(name->len);
1242 WRITEMEM(name->name, name->len);
1243
1244 return 0;
1245}
1246
1247static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname)
1248{
8687b63a 1249 __be32 *p;
1da177e4
LT		 1250
1251 RESERVE_SPACE(8 + oldname->len);
1252 WRITE32(OP_RENAME);
1253 WRITE32(oldname->len);
1254 WRITEMEM(oldname->name, oldname->len);
1255
1256 RESERVE_SPACE(4 + newname->len);
1257 WRITE32(newname->len);
1258 WRITEMEM(newname->name, newname->len);
1259
1260 return 0;
1261}
1262
adfa6f98 1263static int encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid)
1da177e4 1264{
8687b63a 1265 __be32 *p;
1da177e4
LT		 1266
1267 RESERVE_SPACE(12);
1268 WRITE32(OP_RENEW);
1269 WRITE64(client_stateid->cl_clientid);
1270
1271 return 0;
1272}
1273
56ae19f3
TM		 1274static int
1275encode_restorefh(struct xdr_stream *xdr)
1276{
8687b63a 1277 __be32 *p;
56ae19f3
TM		 1278
1279 RESERVE_SPACE(4);
1280 WRITE32(OP_RESTOREFH);
1281
1282 return 0;
1283}
1284
23ec6965
BF		 1285static int
1286encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg)
1287{
8687b63a 1288 __be32 *p;
23ec6965 1289
8ae20abd 1290 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
23ec6965 1291 WRITE32(OP_SETATTR);
8ae20abd 1292 WRITEMEM(zero_stateid.data, NFS4_STATEID_SIZE);
23ec6965
BF		 1293 RESERVE_SPACE(2*4);
1294 WRITE32(1);
1295 WRITE32(FATTR4_WORD0_ACL);
1296 if (arg->acl_len % 4)
1297 return -EINVAL;
1298 RESERVE_SPACE(4);
1299 WRITE32(arg->acl_len);
1300 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1301 return 0;
1302}
1303
1da177e4
LT		 1304static int
1305encode_savefh(struct xdr_stream *xdr)
1306{
8687b63a 1307 __be32 *p;
1da177e4
LT		 1308
1309 RESERVE_SPACE(4);
1310 WRITE32(OP_SAVEFH);
1311
1312 return 0;
1313}
1314
1315static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server)
1316{
1317 int status;
8687b63a 1318 __be32 *p;
1da177e4 1319
8ae20abd 1320 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1da177e4 1321 WRITE32(OP_SETATTR);
8ae20abd 1322 WRITEMEM(arg->stateid.data, NFS4_STATEID_SIZE);
1da177e4
LT		 1323
1324 if ((status = encode_attrs(xdr, arg->iap, server)))
1325 return status;
1326
1327 return 0;
1328}
1329
1330static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid)
1331{
8687b63a 1332 __be32 *p;
1da177e4 1333
8ae20abd 1334 RESERVE_SPACE(4 + NFS4_VERIFIER_SIZE);
1da177e4 1335 WRITE32(OP_SETCLIENTID);
8ae20abd 1336 WRITEMEM(setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
1da177e4
LT		 1337
1338 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1339 RESERVE_SPACE(4);
1340 WRITE32(setclientid->sc_prog);
1341 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1342 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1343 RESERVE_SPACE(4);
1344 WRITE32(setclientid->sc_cb_ident);
1345
1346 return 0;
1347}
1348
adfa6f98 1349static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs_client *client_state)
1da177e4 1350{
8687b63a 1351 __be32 *p;
1da177e4 1352
8ae20abd 1353 RESERVE_SPACE(12 + NFS4_VERIFIER_SIZE);
1da177e4
LT		 1354 WRITE32(OP_SETCLIENTID_CONFIRM);
1355 WRITE64(client_state->cl_clientid);
8ae20abd 1356 WRITEMEM(client_state->cl_confirm.data, NFS4_VERIFIER_SIZE);
1da177e4
LT		 1357
1358 return 0;
1359}
1360
1361static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args)
1362{
8687b63a 1363 __be32 *p;
1da177e4
LT		 1364
1365 RESERVE_SPACE(4);
1366 WRITE32(OP_WRITE);
1367
1368 encode_stateid(xdr, args->context);
1369
1370 RESERVE_SPACE(16);
1371 WRITE64(args->offset);
1372 WRITE32(args->stable);
1373 WRITE32(args->count);
1374
1375 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1376
1377 return 0;
1378}
1379
1380static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1381{
8687b63a 1382 __be32 *p;
1da177e4 1383
8ae20abd 1384 RESERVE_SPACE(4+NFS4_STATEID_SIZE);
1da177e4
LT		 1385
1386 WRITE32(OP_DELEGRETURN);
8ae20abd 1387 WRITEMEM(stateid->data, NFS4_STATEID_SIZE);
1da177e4
LT		 1388 return 0;
1389
1390}
1391/*
1392 * END OF "GENERIC" ENCODE ROUTINES.
1393 */
1394
1395/*
1396 * Encode an ACCESS request
1397 */
8687b63a 1398static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
1da177e4
LT		 1399{
1400 struct xdr_stream xdr;
1401 struct compound_hdr hdr = {
1402 .nops = 2,
1403 };
1404 int status;
1405
1406 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1407 encode_compound_hdr(&xdr, &hdr);
1408 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1409 status = encode_access(&xdr, args->access);
1410 return status;
1411}
1412
1413/*
1414 * Encode LOOKUP request
1415 */
8687b63a 1416static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
1da177e4
LT		 1417{
1418 struct xdr_stream xdr;
1419 struct compound_hdr hdr = {
1420 .nops = 4,
1421 };
1422 int status;
1423
1424 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1425 encode_compound_hdr(&xdr, &hdr);
1426 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1427 goto out;
1428 if ((status = encode_lookup(&xdr, args->name)) != 0)
1429 goto out;
1430 if ((status = encode_getfh(&xdr)) != 0)
1431 goto out;
1432 status = encode_getfattr(&xdr, args->bitmask);
1433out:
1434 return status;
1435}
1436
1437/*
1438 * Encode LOOKUP_ROOT request
1439 */
8687b63a 1440static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
1da177e4
LT		 1441{
1442 struct xdr_stream xdr;
1443 struct compound_hdr hdr = {
1444 .nops = 3,
1445 };
1446 int status;
1447
1448 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1449 encode_compound_hdr(&xdr, &hdr);
1450 if ((status = encode_putrootfh(&xdr)) != 0)
1451 goto out;
1452 if ((status = encode_getfh(&xdr)) == 0)
1453 status = encode_getfattr(&xdr, args->bitmask);
1454out:
1455 return status;
1456}
1457
1458/*
1459 * Encode REMOVE request
1460 */
8687b63a 1461static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs4_remove_arg *args)
1da177e4
LT		 1462{
1463 struct xdr_stream xdr;
1464 struct compound_hdr hdr = {
16e42959 1465 .nops = 3,
1da177e4
LT		 1466 };
1467 int status;
1468
1469 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1470 encode_compound_hdr(&xdr, &hdr);
16e42959
TM		 1471 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1472 goto out;
1473 if ((status = encode_remove(&xdr, args->name)) != 0)
1474 goto out;
1475 status = encode_getfattr(&xdr, args->bitmask);
1476out:
1da177e4
LT		 1477 return status;
1478}
1479
1480/*
1481 * Encode RENAME request
1482 */
8687b63a 1483static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs4_rename_arg *args)
1da177e4
LT		 1484{
1485 struct xdr_stream xdr;
1486 struct compound_hdr hdr = {
6caf2c82 1487 .nops = 7,
1da177e4
LT		 1488 };
1489 int status;
1490
1491 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1492 encode_compound_hdr(&xdr, &hdr);
1493 if ((status = encode_putfh(&xdr, args->old_dir)) != 0)
1494 goto out;
1495 if ((status = encode_savefh(&xdr)) != 0)
1496 goto out;
1497 if ((status = encode_putfh(&xdr, args->new_dir)) != 0)
1498 goto out;
6caf2c82
TM		 1499 if ((status = encode_rename(&xdr, args->old_name, args->new_name)) != 0)
1500 goto out;
1501 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1502 goto out;
1503 if ((status = encode_restorefh(&xdr)) != 0)
1504 goto out;
1505 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1506out:
1507 return status;
1508}
1509
1510/*
1511 * Encode LINK request
1512 */
8687b63a 1513static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
1da177e4
LT		 1514{
1515 struct xdr_stream xdr;
1516 struct compound_hdr hdr = {
91ba2eee 1517 .nops = 7,
1da177e4
LT		 1518 };
1519 int status;
1520
1521 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1522 encode_compound_hdr(&xdr, &hdr);
1523 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1524 goto out;
1525 if ((status = encode_savefh(&xdr)) != 0)
1526 goto out;
1527 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1528 goto out;
91ba2eee
TM		 1529 if ((status = encode_link(&xdr, args->name)) != 0)
1530 goto out;
1531 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1532 goto out;
1533 if ((status = encode_restorefh(&xdr)) != 0)
1534 goto out;
1535 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1536out:
1537 return status;
1538}
1539
1540/*
1541 * Encode CREATE request
1542 */
8687b63a 1543static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1da177e4
LT		 1544{
1545 struct xdr_stream xdr;
1546 struct compound_hdr hdr = {
56ae19f3 1547 .nops = 7,
1da177e4
LT		 1548 };
1549 int status;
1550
1551 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1552 encode_compound_hdr(&xdr, &hdr);
1553 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1554 goto out;
56ae19f3
TM		 1555 if ((status = encode_savefh(&xdr)) != 0)
1556 goto out;
1da177e4
LT		 1557 if ((status = encode_create(&xdr, args)) != 0)
1558 goto out;
1559 if ((status = encode_getfh(&xdr)) != 0)
1560 goto out;
56ae19f3
TM		 1561 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1562 goto out;
1563 if ((status = encode_restorefh(&xdr)) != 0)
1564 goto out;
1da177e4
LT		 1565 status = encode_getfattr(&xdr, args->bitmask);
1566out:
1567 return status;
1568}
1569
1570/*
1571 * Encode SYMLINK request
1572 */
8687b63a 1573static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
1da177e4
LT		 1574{
1575 return nfs4_xdr_enc_create(req, p, args);
1576}
1577
1578/*
1579 * Encode GETATTR request
1580 */
8687b63a 1581static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
1da177e4
LT		 1582{
1583 struct xdr_stream xdr;
1584 struct compound_hdr hdr = {
1585 .nops = 2,
1586 };
1587 int status;
1588
1589 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1590 encode_compound_hdr(&xdr, &hdr);
1591 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1592 status = encode_getfattr(&xdr, args->bitmask);
1593 return status;
1594}
1595
1596/*
1597 * Encode a CLOSE request
1598 */
8687b63a 1599static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1da177e4
LT		 1600{
1601 struct xdr_stream xdr;
1602 struct compound_hdr hdr = {
516a6af6 1603 .nops = 3,
1da177e4
LT		 1604 };
1605 int status;
1606
1607 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1608 encode_compound_hdr(&xdr, &hdr);
1609 status = encode_putfh(&xdr, args->fh);
1610 if(status)
1611 goto out;
1612 status = encode_close(&xdr, args);
516a6af6
TM		 1613 if (status != 0)
1614 goto out;
1615 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1616out:
1617 return status;
1618}
1619
1620/*
1621 * Encode an OPEN request
1622 */
8687b63a 1623static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1da177e4
LT		 1624{
1625 struct xdr_stream xdr;
1626 struct compound_hdr hdr = {
56ae19f3 1627 .nops = 7,
1da177e4
LT		 1628 };
1629 int status;
1630
1631 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1632 encode_compound_hdr(&xdr, &hdr);
1633 status = encode_putfh(&xdr, args->fh);
56ae19f3
TM		 1634 if (status)
1635 goto out;
1636 status = encode_savefh(&xdr);
1da177e4
LT		 1637 if (status)
1638 goto out;
1639 status = encode_open(&xdr, args);
1640 if (status)
1641 goto out;
1642 status = encode_getfh(&xdr);
1643 if (status)
1644 goto out;
1645 status = encode_getfattr(&xdr, args->bitmask);
56ae19f3
TM		 1646 if (status)
1647 goto out;
1648 status = encode_restorefh(&xdr);
1649 if (status)
1650 goto out;
1651 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1652out:
1653 return status;
1654}
1655
1656/*
1657 * Encode an OPEN_CONFIRM request
1658 */
8687b63a 1659static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
1da177e4
LT		 1660{
1661 struct xdr_stream xdr;
1662 struct compound_hdr hdr = {
1663 .nops = 2,
1664 };
1665 int status;
1666
1667 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1668 encode_compound_hdr(&xdr, &hdr);
1669 status = encode_putfh(&xdr, args->fh);
1670 if(status)
1671 goto out;
1672 status = encode_open_confirm(&xdr, args);
1673out:
1674 return status;
1675}
1676
1677/*
1678 * Encode an OPEN request with no attributes.
1679 */
8687b63a 1680static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
1da177e4
LT		 1681{
1682 struct xdr_stream xdr;
1683 struct compound_hdr hdr = {
864472e9 1684 .nops = 3,
1da177e4
LT		 1685 };
1686 int status;
1687
1688 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1689 encode_compound_hdr(&xdr, &hdr);
1690 status = encode_putfh(&xdr, args->fh);
1691 if (status)
1692 goto out;
1693 status = encode_open(&xdr, args);
864472e9
TM		 1694 if (status)
1695 goto out;
1696 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1697out:
1698 return status;
1699}
1700
1701/*
1702 * Encode an OPEN_DOWNGRADE request
1703 */
8687b63a 1704static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
1da177e4
LT		 1705{
1706 struct xdr_stream xdr;
1707 struct compound_hdr hdr = {
516a6af6 1708 .nops = 3,
1da177e4
LT		 1709 };
1710 int status;
1711
1712 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1713 encode_compound_hdr(&xdr, &hdr);
1714 status = encode_putfh(&xdr, args->fh);
1715 if (status)
1716 goto out;
1717 status = encode_open_downgrade(&xdr, args);
516a6af6
TM		 1718 if (status != 0)
1719 goto out;
1720 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1721out:
1722 return status;
1723}
1724
1725/*
1726 * Encode a LOCK request
1727 */
8687b63a 1728static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
1da177e4
LT		 1729{
1730 struct xdr_stream xdr;
1731 struct compound_hdr hdr = {
1732 .nops = 2,
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_lock(&xdr, args);
1742out:
1743 return status;
1744}
1745
1746/*
1747 * Encode a LOCKT request
1748 */
8687b63a 1749static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
1da177e4
LT		 1750{
1751 struct xdr_stream xdr;
1752 struct compound_hdr hdr = {
1753 .nops = 2,
1754 };
1755 int status;
1756
1757 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1758 encode_compound_hdr(&xdr, &hdr);
1759 status = encode_putfh(&xdr, args->fh);
1760 if(status)
1761 goto out;
1762 status = encode_lockt(&xdr, args);
1763out:
1764 return status;
1765}
1766
1767/*
1768 * Encode a LOCKU request
1769 */
8687b63a 1770static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
1da177e4
LT		 1771{
1772 struct xdr_stream xdr;
1773 struct compound_hdr hdr = {
1774 .nops = 2,
1775 };
1776 int status;
1777
1778 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1779 encode_compound_hdr(&xdr, &hdr);
1780 status = encode_putfh(&xdr, args->fh);
1781 if(status)
1782 goto out;
1783 status = encode_locku(&xdr, args);
1784out:
1785 return status;
1786}
1787
1788/*
1789 * Encode a READLINK request
1790 */
8687b63a 1791static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
1da177e4
LT		 1792{
1793 struct xdr_stream xdr;
1794 struct compound_hdr hdr = {
1795 .nops = 2,
1796 };
1797 int status;
1798
1799 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1800 encode_compound_hdr(&xdr, &hdr);
1801 status = encode_putfh(&xdr, args->fh);
1802 if(status)
1803 goto out;
1804 status = encode_readlink(&xdr, args, req);
1805out:
1806 return status;
1807}
1808
1809/*
1810 * Encode a READDIR request
1811 */
8687b63a 1812static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
1da177e4
LT		 1813{
1814 struct xdr_stream xdr;
1815 struct compound_hdr hdr = {
1816 .nops = 2,
1817 };
1818 int status;
1819
1820 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1821 encode_compound_hdr(&xdr, &hdr);
1822 status = encode_putfh(&xdr, args->fh);
1823 if(status)
1824 goto out;
1825 status = encode_readdir(&xdr, args, req);
1826out:
1827 return status;
1828}
1829
1830/*
1831 * Encode a READ request
1832 */
8687b63a 1833static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
1da177e4 1834{
1be27f36 1835 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
1da177e4
LT		 1836 struct xdr_stream xdr;
1837 struct compound_hdr hdr = {
1838 .nops = 2,
1839 };
1840 int replen, status;
1841
1842 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1843 encode_compound_hdr(&xdr, &hdr);
1844 status = encode_putfh(&xdr, args->fh);
1845 if (status)
1846 goto out;
1847 status = encode_read(&xdr, args);
1848 if (status)
1849 goto out;
1850
1851 /* set up reply kvec
1852 * toplevel status + taglen=0 + rescount + OP_PUTFH + status
1853 * + OP_READ + status + eof + datalen = 9
1854 */
1855 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
1856 xdr_inline_pages(&req->rq_rcv_buf, replen,
1857 args->pages, args->pgbase, args->count);
1858out:
1859 return status;
1860}
1861
1862/*
1863 * Encode an SETATTR request
1864 */
8687b63a 1865static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
1da177e4
LT		 1866
1867{
1868 struct xdr_stream xdr;
1869 struct compound_hdr hdr = {
1870 .nops = 3,
1871 };
1872 int status;
1873
1874 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1875 encode_compound_hdr(&xdr, &hdr);
1876 status = encode_putfh(&xdr, args->fh);
1877 if(status)
1878 goto out;
1879 status = encode_setattr(&xdr, args, args->server);
1880 if(status)
1881 goto out;
1882 status = encode_getfattr(&xdr, args->bitmask);
1883out:
1884 return status;
1885}
1886
029d105e
BF		 1887/*
1888 * Encode a GETACL request
1889 */
1890static int
8687b63a 1891nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
029d105e
BF		 1892 struct nfs_getaclargs *args)
1893{
1894 struct xdr_stream xdr;
1be27f36 1895 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
029d105e
BF		 1896 struct compound_hdr hdr = {
1897 .nops = 2,
1898 };
1899 int replen, status;
1900
1901 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1902 encode_compound_hdr(&xdr, &hdr);
1903 status = encode_putfh(&xdr, args->fh);
1904 if (status)
1905 goto out;
1906 status = encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0);
1907 /* set up reply buffer: */
1908 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
1909 xdr_inline_pages(&req->rq_rcv_buf, replen,
1910 args->acl_pages, args->acl_pgbase, args->acl_len);
1911out:
1912 return status;
1913}
1914
1da177e4
LT		 1915/*
1916 * Encode a WRITE request
1917 */
8687b63a 1918static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
1da177e4
LT		 1919{
1920 struct xdr_stream xdr;
1921 struct compound_hdr hdr = {
4f9838c7 1922 .nops = 3,
1da177e4
LT		 1923 };
1924 int status;
1925
1926 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1927 encode_compound_hdr(&xdr, &hdr);
1928 status = encode_putfh(&xdr, args->fh);
1929 if (status)
1930 goto out;
1931 status = encode_write(&xdr, args);
4f9838c7
TM		 1932 if (status)
1933 goto out;
1934 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1935out:
1936 return status;
1937}
1938
1939/*
1940 * a COMMIT request
1941 */
8687b63a 1942static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
1da177e4
LT		 1943{
1944 struct xdr_stream xdr;
1945 struct compound_hdr hdr = {
4f9838c7 1946 .nops = 3,
1da177e4
LT		 1947 };
1948 int status;
1949
1950 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1951 encode_compound_hdr(&xdr, &hdr);
1952 status = encode_putfh(&xdr, args->fh);
1953 if (status)
1954 goto out;
1955 status = encode_commit(&xdr, args);
4f9838c7
TM		 1956 if (status)
1957 goto out;
1958 status = encode_getfattr(&xdr, args->bitmask);
1da177e4
LT		 1959out:
1960 return status;
1961}
1962
1963/*
1964 * FSINFO request
1965 */
8687b63a 1966static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
1da177e4
LT		 1967{
1968 struct xdr_stream xdr;
1969 struct compound_hdr hdr = {
1970 .nops = 2,
1971 };
1972 int status;
1973
1974 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1975 encode_compound_hdr(&xdr, &hdr);
1976 status = encode_putfh(&xdr, args->fh);
1977 if (!status)
1978 status = encode_fsinfo(&xdr, args->bitmask);
1979 return status;
1980}
1981
1982/*
1983 * a PATHCONF request
1984 */
8687b63a 1985static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
1da177e4 1986{
1da177e4
LT		 1987 struct xdr_stream xdr;
1988 struct compound_hdr hdr = {
1989 .nops = 2,
1990 };
1991 int status;
1992
1993 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1994 encode_compound_hdr(&xdr, &hdr);
1995 status = encode_putfh(&xdr, args->fh);
1996 if (!status)
1997 status = encode_getattr_one(&xdr,
1998 args->bitmask[0] & nfs4_pathconf_bitmap[0]);
1999 return status;
2000}
2001
2002/*
2003 * a STATFS request
2004 */
8687b63a 2005static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
1da177e4 2006{
1da177e4
LT		 2007 struct xdr_stream xdr;
2008 struct compound_hdr hdr = {
2009 .nops = 2,
2010 };
2011 int status;
2012
2013 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2014 encode_compound_hdr(&xdr, &hdr);
2015 status = encode_putfh(&xdr, args->fh);
2016 if (status == 0)
2017 status = encode_getattr_two(&xdr,
2018 args->bitmask[0] & nfs4_statfs_bitmap[0],
2019 args->bitmask[1] & nfs4_statfs_bitmap[1]);
2020 return status;
2021}
2022
2023/*
2024 * GETATTR_BITMAP request
2025 */
8687b63a 2026static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p, const struct nfs_fh *fhandle)
1da177e4
LT		 2027{
2028 struct xdr_stream xdr;
2029 struct compound_hdr hdr = {
2030 .nops = 2,
2031 };
2032 int status;
2033
2034 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2035 encode_compound_hdr(&xdr, &hdr);
2036 status = encode_putfh(&xdr, fhandle);
2037 if (status == 0)
2038 status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2039 FATTR4_WORD0_LINK_SUPPORT|
2040 FATTR4_WORD0_SYMLINK_SUPPORT|
2041 FATTR4_WORD0_ACLSUPPORT);
2042 return status;
2043}
2044
2045/*
2046 * a RENEW request
2047 */
8687b63a 2048static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
1da177e4
LT		 2049{
2050 struct xdr_stream xdr;
2051 struct compound_hdr hdr = {
2052 .nops = 1,
2053 };
2054
2055 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2056 encode_compound_hdr(&xdr, &hdr);
2057 return encode_renew(&xdr, clp);
2058}
2059
2060/*
2061 * a SETCLIENTID request
2062 */
8687b63a 2063static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
1da177e4
LT		 2064{
2065 struct xdr_stream xdr;
2066 struct compound_hdr hdr = {
2067 .nops = 1,
2068 };
2069
2070 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2071 encode_compound_hdr(&xdr, &hdr);
2072 return encode_setclientid(&xdr, sc);
2073}
2074
2075/*
2076 * a SETCLIENTID_CONFIRM request
2077 */
8687b63a 2078static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
1da177e4
LT		 2079{
2080 struct xdr_stream xdr;
2081 struct compound_hdr hdr = {
2082 .nops = 3,
2083 };
2084 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2085 int status;
2086
2087 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2088 encode_compound_hdr(&xdr, &hdr);
2089 status = encode_setclientid_confirm(&xdr, clp);
2090 if (!status)
2091 status = encode_putrootfh(&xdr);
2092 if (!status)
2093 status = encode_fsinfo(&xdr, lease_bitmap);
2094 return status;
2095}
2096
2097/*
2098 * DELEGRETURN request
2099 */
8687b63a 2100static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
1da177e4
LT		 2101{
2102 struct xdr_stream xdr;
2103 struct compound_hdr hdr = {
fa178f29 2104 .nops = 3,
1da177e4
LT		 2105 };
2106 int status;
2107
2108 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2109 encode_compound_hdr(&xdr, &hdr);
fa178f29
TM		 2110 status = encode_putfh(&xdr, args->fhandle);
2111 if (status != 0)
2112 goto out;
2113 status = encode_delegreturn(&xdr, args->stateid);
2114 if (status != 0)
2115 goto out;
2116 status = encode_getfattr(&xdr, args->bitmask);
2117out:
1da177e4
LT		 2118 return status;
2119}
2120
683b57b4
TM		 2121/*
2122 * Encode FS_LOCATIONS request
2123 */
8687b63a 2124static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
683b57b4
TM		 2125{
2126 struct xdr_stream xdr;
2127 struct compound_hdr hdr = {
2128 .nops = 3,
2129 };
1be27f36 2130 struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth;
683b57b4
TM		 2131 int replen;
2132 int status;
2133
2134 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2135 encode_compound_hdr(&xdr, &hdr);
2136 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
2137 goto out;
2138 if ((status = encode_lookup(&xdr, args->name)) != 0)
2139 goto out;
830b8e33 2140 if ((status = encode_fs_locations(&xdr, args->bitmask)) != 0)
683b57b4
TM		 2141 goto out;
2142 /* set up reply
830b8e33 2143 * toplevel_status + OP_PUTFH + status
683b57b4
TM		 2144 * + OP_LOOKUP + status + OP_GETATTR + status = 7
2145 */
2146 replen = (RPC_REPHDRSIZE + auth->au_rslack + 7) << 2;
2147 xdr_inline_pages(&req->rq_rcv_buf, replen, &args->page,
2148 0, PAGE_SIZE);
2149out:
2150 return status;
2151}
2152
1da177e4
LT		 2153/*
2154 * START OF "GENERIC" DECODE ROUTINES.
2155 * These may look a little ugly since they are imported from a "generic"
2156 * set of XDR encode/decode routines which are intended to be shared by
2157 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
2158 *
2159 * If the pain of reading these is too great, it should be a straightforward
2160 * task to translate them into Linux-specific versions which are more
2161 * consistent with the style used in NFSv2/v3...
2162 */
2163#define READ32(x) (x) = ntohl(*p++)
2164#define READ64(x) do { \
2165 (x) = (u64)ntohl(*p++) << 32; \
2166 (x) |= ntohl(*p++); \
2167} while (0)
2168#define READTIME(x) do { \
2169 p++; \
2170 (x.tv_sec) = ntohl(*p++); \
2171 (x.tv_nsec) = ntohl(*p++); \
2172} while (0)
2173#define COPYMEM(x,nbytes) do { \
2174 memcpy((x), p, nbytes); \
2175 p += XDR_QUADLEN(nbytes); \
2176} while (0)
2177
2178#define READ_BUF(nbytes) do { \
2179 p = xdr_inline_decode(xdr, nbytes); \
e4cc6ee2
CL		 2180 if (unlikely(!p)) { \
2181 printk(KERN_INFO "%s: prematurely hit end of receive" \
2182 " buffer\n", __FUNCTION__); \
2183 printk(KERN_INFO "%s: xdr->p=%p, bytes=%u, xdr->end=%p\n", \
2184 __FUNCTION__, xdr->p, nbytes, xdr->end); \
1da177e4
LT		 2185 return -EIO; \
2186 } \
2187} while (0)
2188
683b57b4 2189static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
1da177e4 2190{
8687b63a 2191 __be32 *p;
1da177e4
LT		 2192
2193 READ_BUF(4);
2194 READ32(*len);
2195 READ_BUF(*len);
2196 *string = (char *)p;
2197 return 0;
2198}
2199
2200static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2201{
8687b63a 2202 __be32 *p;
1da177e4
LT		 2203
2204 READ_BUF(8);
2205 READ32(hdr->status);
2206 READ32(hdr->taglen);
2207
2208 READ_BUF(hdr->taglen + 4);
2209 hdr->tag = (char *)p;
2210 p += XDR_QUADLEN(hdr->taglen);
2211 READ32(hdr->nops);
2212 return 0;
2213}
2214
2215static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2216{
8687b63a 2217 __be32 *p;
1da177e4
LT		 2218 uint32_t opnum;
2219 int32_t nfserr;
2220
2221 READ_BUF(8);
2222 READ32(opnum);
2223 if (opnum != expected) {
2224 printk(KERN_NOTICE
2225 "nfs4_decode_op_hdr: Server returned operation"
2226 " %d but we issued a request for %d\n",
2227 opnum, expected);
2228 return -EIO;
2229 }
2230 READ32(nfserr);
2231 if (nfserr != NFS_OK)
0a8ea437 2232 return -nfs4_stat_to_errno(nfserr);
1da177e4
LT		 2233 return 0;
2234}
2235
2236/* Dummy routine */
adfa6f98 2237static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
1da177e4 2238{
8687b63a 2239 __be32 *p;
683b57b4 2240 unsigned int strlen;
1da177e4
LT		 2241 char *str;
2242
2243 READ_BUF(12);
2244 return decode_opaque_inline(xdr, &strlen, &str);
2245}
2246
2247static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2248{
8687b63a
AV		 2249 uint32_t bmlen;
2250 __be32 *p;
1da177e4
LT		 2251
2252 READ_BUF(4);
2253 READ32(bmlen);
2254
2255 bitmap[0] = bitmap[1] = 0;
2256 READ_BUF((bmlen << 2));
2257 if (bmlen > 0) {
2258 READ32(bitmap[0]);
2259 if (bmlen > 1)
2260 READ32(bitmap[1]);
2261 }
2262 return 0;
2263}
2264
8687b63a 2265static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
1da177e4 2266{
8687b63a 2267 __be32 *p;
1da177e4
LT		 2268
2269 READ_BUF(4);
2270 READ32(*attrlen);
2271 *savep = xdr->p;
2272 return 0;
2273}
2274
2275static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2276{
2277 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2278 decode_attr_bitmap(xdr, bitmask);
2279 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2280 } else
2281 bitmask[0] = bitmask[1] = 0;
2282 dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]);
2283 return 0;
2284}
2285
2286static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2287{
8687b63a 2288 __be32 *p;
1da177e4
LT		 2289
2290 *type = 0;
2291 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2292 return -EIO;
2293 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2294 READ_BUF(4);
2295 READ32(*type);
2296 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2297 dprintk("%s: bad type %d\n", __FUNCTION__, *type);
2298 return -EIO;
2299 }
2300 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2301 }
2302 dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type);
2303 return 0;
2304}
2305
2306static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2307{
8687b63a 2308 __be32 *p;
1da177e4
LT		 2309
2310 *change = 0;
2311 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2312 return -EIO;
2313 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2314 READ_BUF(8);
2315 READ64(*change);
2316 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2317 }
2318 dprintk("%s: change attribute=%Lu\n", __FUNCTION__,
2319 (unsigned long long)*change);
2320 return 0;
2321}
2322
2323static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2324{
8687b63a 2325 __be32 *p;
1da177e4
LT		 2326
2327 *size = 0;
2328 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2329 return -EIO;
2330 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2331 READ_BUF(8);
2332 READ64(*size);
2333 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2334 }
2335 dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size);
2336 return 0;
2337}
2338
2339static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2340{
8687b63a 2341 __be32 *p;
1da177e4
LT		 2342
2343 *res = 0;
2344 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2345 return -EIO;
2346 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2347 READ_BUF(4);
2348 READ32(*res);
2349 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2350 }
2351 dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2352 return 0;
2353}
2354
2355static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2356{
8687b63a 2357 __be32 *p;
1da177e4
LT		 2358
2359 *res = 0;
2360 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2361 return -EIO;
2362 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2363 READ_BUF(4);
2364 READ32(*res);
2365 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2366 }
2367 dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2368 return 0;
2369}
2370
8b4bdcf8 2371static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
1da177e4 2372{
8687b63a 2373 __be32 *p;
1da177e4
LT		 2374
2375 fsid->major = 0;
2376 fsid->minor = 0;
2377 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2378 return -EIO;
2379 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2380 READ_BUF(16);
2381 READ64(fsid->major);
2382 READ64(fsid->minor);
2383 bitmap[0] &= ~FATTR4_WORD0_FSID;
2384 }
2385 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__,
2386 (unsigned long long)fsid->major,
2387 (unsigned long long)fsid->minor);
2388 return 0;
2389}
2390
2391static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2392{
8687b63a 2393 __be32 *p;
1da177e4
LT		 2394
2395 *res = 60;
2396 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2397 return -EIO;
2398 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2399 READ_BUF(4);
2400 READ32(*res);
2401 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2402 }
2403 dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res);
2404 return 0;
2405}
2406
2407static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2408{
8687b63a 2409 __be32 *p;
1da177e4
LT		 2410
2411 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2412 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2413 return -EIO;
2414 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2415 READ_BUF(4);
2416 READ32(*res);
2417 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2418 }
2419 dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res);
2420 return 0;
2421}
2422
2423static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2424{
8687b63a 2425 __be32 *p;
1da177e4
LT		 2426
2427 *fileid = 0;
2428 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2429 return -EIO;
2430 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2431 READ_BUF(8);
2432 READ64(*fileid);
2433 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2434 }
2435 dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2436 return 0;
2437}
2438
99baf625
MN		 2439static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2440{
8687b63a 2441 __be32 *p;
99baf625
MN		 2442
2443 *fileid = 0;
2444 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
2445 return -EIO;
2446 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
2447 READ_BUF(8);
2448 READ64(*fileid);
2449 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
2450 }
2451 dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2452 return 0;
2453}
2454
1da177e4
LT		 2455static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2456{
8687b63a 2457 __be32 *p;
1da177e4
LT		 2458 int status = 0;
2459
2460 *res = 0;
2461 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2462 return -EIO;
2463 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2464 READ_BUF(8);
2465 READ64(*res);
2466 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2467 }
2468 dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2469 return status;
2470}
2471
2472static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2473{
8687b63a 2474 __be32 *p;
1da177e4
LT		 2475 int status = 0;
2476
2477 *res = 0;
2478 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2479 return -EIO;
2480 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2481 READ_BUF(8);
2482 READ64(*res);
2483 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2484 }
2485 dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2486 return status;
2487}
2488
2489static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2490{
8687b63a 2491 __be32 *p;
1da177e4
LT		 2492 int status = 0;
2493
2494 *res = 0;
2495 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2496 return -EIO;
2497 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2498 READ_BUF(8);
2499 READ64(*res);
2500 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2501 }
2502 dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2503 return status;
2504}
2505
7aaa0b3b
MN		 2506static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
2507{
2508 int n;
8687b63a 2509 __be32 *p;
7aaa0b3b
MN		 2510 int status = 0;
2511
2512 READ_BUF(4);
2513 READ32(n);
33a43f28 2514 if (n < 0)
7aaa0b3b 2515 goto out_eio;
33a43f28
AA		 2516 if (n == 0)
2517 goto root_path;
7aaa0b3b
MN		 2518 dprintk("path ");
2519 path->ncomponents = 0;
2520 while (path->ncomponents < n) {
2521 struct nfs4_string *component = &path->components[path->ncomponents];
2522 status = decode_opaque_inline(xdr, &component->len, &component->data);
2523 if (unlikely(status != 0))
2524 goto out_eio;
2525 if (path->ncomponents != n)
2526 dprintk("/");
2527 dprintk("%s", component->data);
2528 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
2529 path->ncomponents++;
2530 else {
2531 dprintk("cannot parse %d components in path\n", n);
2532 goto out_eio;
2533 }
2534 }
2535out:
2536 dprintk("\n");
2537 return status;
33a43f28
AA		 2538root_path:
2539/* a root pathname is sent as a zero component4 */
2540 path->ncomponents = 1;
2541 path->components[0].len=0;
2542 path->components[0].data=NULL;
2543 dprintk("path /\n");
2544 goto out;
7aaa0b3b
MN		 2545out_eio:
2546 dprintk(" status %d", status);
2547 status = -EIO;
2548 goto out;
2549}
2550
2551static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
683b57b4
TM		 2552{
2553 int n;
8687b63a 2554 __be32 *p;
683b57b4
TM		 2555 int status = -EIO;
2556
2557 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
2558 goto out;
2559 status = 0;
2560 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
2561 goto out;
7aaa0b3b
MN		 2562 dprintk("%s: fsroot ", __FUNCTION__);
2563 status = decode_pathname(xdr, &res->fs_path);
683b57b4
TM		 2564 if (unlikely(status != 0))
2565 goto out;
2566 READ_BUF(4);
2567 READ32(n);
2568 if (n <= 0)
2569 goto out_eio;
2570 res->nlocations = 0;
2571 while (res->nlocations < n) {
7aaa0b3b
MN		 2572 int m;
2573 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
683b57b4 2574
7aaa0b3b
MN		 2575 READ_BUF(4);
2576 READ32(m);
2577 if (m <= 0)
683b57b4 2578 goto out_eio;
7aaa0b3b
MN		 2579
2580 loc->nservers = 0;
2581 dprintk("%s: servers ", __FUNCTION__);
2582 while (loc->nservers < m) {
2583 struct nfs4_string *server = &loc->servers[loc->nservers];
2584 status = decode_opaque_inline(xdr, &server->len, &server->data);
2585 if (unlikely(status != 0))
2586 goto out_eio;
2587 dprintk("%s ", server->data);
2588 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
2589 loc->nservers++;
2590 else {
2591 int i;
2592 dprintk("%s: using first %d of %d servers returned for location %d\n", __FUNCTION__, NFS4_FS_LOCATION_MAXSERVERS, m, res->nlocations);
2593 for (i = loc->nservers; i < m; i++) {
2e42c3e2 2594 unsigned int len;
7aaa0b3b
MN		 2595 char *data;
2596 status = decode_opaque_inline(xdr, &len, &data);
2597 if (unlikely(status != 0))
2598 goto out_eio;
2599 }
2600 }
2601 }
2602 status = decode_pathname(xdr, &loc->rootpath);
683b57b4
TM		 2603 if (unlikely(status != 0))
2604 goto out_eio;
7aaa0b3b 2605 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
683b57b4
TM		 2606 res->nlocations++;
2607 }
2608out:
2609 dprintk("%s: fs_locations done, error = %d\n", __FUNCTION__, status);
2610 return status;
2611out_eio:
2612 status = -EIO;
2613 goto out;
2614}
2615
1da177e4
LT		 2616static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2617{
8687b63a 2618 __be32 *p;
1da177e4
LT		 2619 int status = 0;
2620
2621 *res = 0;
2622 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2623 return -EIO;
2624 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2625 READ_BUF(8);
2626 READ64(*res);
2627 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2628 }
2629 dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2630 return status;
2631}
2632
2633static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2634{
8687b63a 2635 __be32 *p;
1da177e4
LT		 2636 int status = 0;
2637
2638 *maxlink = 1;
2639 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2640 return -EIO;
2641 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2642 READ_BUF(4);
2643 READ32(*maxlink);
2644 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2645 }
2646 dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink);
2647 return status;
2648}
2649
2650static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2651{
8687b63a 2652 __be32 *p;
1da177e4
LT		 2653 int status = 0;
2654
2655 *maxname = 1024;
2656 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2657 return -EIO;
2658 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2659 READ_BUF(4);
2660 READ32(*maxname);
2661 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2662 }
2663 dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname);
2664 return status;
2665}
2666
2667static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2668{
8687b63a 2669 __be32 *p;
1da177e4
LT		 2670 int status = 0;
2671
2672 *res = 1024;
2673 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2674 return -EIO;
2675 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2676 uint64_t maxread;
2677 READ_BUF(8);
2678 READ64(maxread);
2679 if (maxread > 0x7FFFFFFF)
2680 maxread = 0x7FFFFFFF;
2681 *res = (uint32_t)maxread;
2682 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2683 }
2684 dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res);
2685 return status;
2686}
2687
2688static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2689{
8687b63a 2690 __be32 *p;
1da177e4
LT		 2691 int status = 0;
2692
2693 *res = 1024;
2694 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2695 return -EIO;
2696 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2697 uint64_t maxwrite;
2698 READ_BUF(8);
2699 READ64(maxwrite);
2700 if (maxwrite > 0x7FFFFFFF)
2701 maxwrite = 0x7FFFFFFF;
2702 *res = (uint32_t)maxwrite;
2703 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2704 }
2705 dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res);
2706 return status;
2707}
2708
2709static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
2710{
8687b63a 2711 __be32 *p;
1da177e4
LT		 2712
2713 *mode = 0;
2714 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
2715 return -EIO;
2716 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
2717 READ_BUF(4);
2718 READ32(*mode);
2719 *mode &= ~S_IFMT;
2720 bitmap[1] &= ~FATTR4_WORD1_MODE;
2721 }
2722 dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode);
2723 return 0;
2724}
2725
2726static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
2727{
8687b63a 2728 __be32 *p;
1da177e4
LT		 2729
2730 *nlink = 1;
2731 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
2732 return -EIO;
2733 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
2734 READ_BUF(4);
2735 READ32(*nlink);
2736 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
2737 }
2738 dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink);
2739 return 0;
2740}
2741
2e42c3e2 2742static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *uid)
1da177e4 2743{
8687b63a
AV		 2744 uint32_t len;
2745 __be32 *p;
1da177e4
LT		 2746
2747 *uid = -2;
2748 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
2749 return -EIO;
2750 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
2751 READ_BUF(4);
2752 READ32(len);
2753 READ_BUF(len);
2754 if (len < XDR_MAX_NETOBJ) {
2755 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
2756 dprintk("%s: nfs_map_name_to_uid failed!\n",
2757 __FUNCTION__);
2758 } else
2759 printk(KERN_WARNING "%s: name too long (%u)!\n",
2760 __FUNCTION__, len);
2761 bitmap[1] &= ~FATTR4_WORD1_OWNER;
2762 }
2763 dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid);
2764 return 0;
2765}
2766
2e42c3e2 2767static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, uint32_t *gid)
1da177e4 2768{
8687b63a
AV		 2769 uint32_t len;
2770 __be32 *p;
1da177e4
LT		 2771
2772 *gid = -2;
2773 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
2774 return -EIO;
2775 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
2776 READ_BUF(4);
2777 READ32(len);
2778 READ_BUF(len);
2779 if (len < XDR_MAX_NETOBJ) {
2780 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
2781 dprintk("%s: nfs_map_group_to_gid failed!\n",
2782 __FUNCTION__);
2783 } else
2784 printk(KERN_WARNING "%s: name too long (%u)!\n",
2785 __FUNCTION__, len);
2786 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
2787 }
2788 dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid);
2789 return 0;
2790}
2791
2792static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
2793{
8687b63a
AV		 2794 uint32_t major = 0, minor = 0;
2795 __be32 *p;
1da177e4
LT		 2796
2797 *rdev = MKDEV(0,0);
2798 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
2799 return -EIO;
2800 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
2801 dev_t tmp;
2802
2803 READ_BUF(8);
2804 READ32(major);
2805 READ32(minor);
2806 tmp = MKDEV(major, minor);
2807 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
2808 *rdev = tmp;
2809 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
2810 }
2811 dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor);
2812 return 0;
2813}
2814
2815static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2816{
8687b63a 2817 __be32 *p;
1da177e4
LT		 2818 int status = 0;
2819
2820 *res = 0;
2821 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
2822 return -EIO;
2823 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
2824 READ_BUF(8);
2825 READ64(*res);
2826 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
2827 }
2828 dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2829 return status;
2830}
2831
2832static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2833{
8687b63a 2834 __be32 *p;
1da177e4
LT		 2835 int status = 0;
2836
2837 *res = 0;
2838 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
2839 return -EIO;
2840 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
2841 READ_BUF(8);
2842 READ64(*res);
2843 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
2844 }
2845 dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2846 return status;
2847}
2848
2849static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2850{
8687b63a 2851 __be32 *p;
1da177e4
LT		 2852 int status = 0;
2853
2854 *res = 0;
2855 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
2856 return -EIO;
2857 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
2858 READ_BUF(8);
2859 READ64(*res);
2860 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
2861 }
2862 dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2863 return status;
2864}
2865
2866static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
2867{
8687b63a 2868 __be32 *p;
1da177e4
LT		 2869
2870 *used = 0;
2871 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
2872 return -EIO;
2873 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
2874 READ_BUF(8);
2875 READ64(*used);
2876 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
2877 }
2878 dprintk("%s: space used=%Lu\n", __FUNCTION__,
2879 (unsigned long long)*used);
2880 return 0;
2881}
2882
2883static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
2884{
8687b63a 2885 __be32 *p;
1da177e4
LT		 2886 uint64_t sec;
2887 uint32_t nsec;
2888
2889 READ_BUF(12);
2890 READ64(sec);
2891 READ32(nsec);
2892 time->tv_sec = (time_t)sec;
2893 time->tv_nsec = (long)nsec;
2894 return 0;
2895}
2896
2897static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2898{
2899 int status = 0;
2900
2901 time->tv_sec = 0;
2902 time->tv_nsec = 0;
2903 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
2904 return -EIO;
2905 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
2906 status = decode_attr_time(xdr, time);
2907 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
2908 }
2909 dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2910 return status;
2911}
2912
2913static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2914{
2915 int status = 0;
2916
2917 time->tv_sec = 0;
2918 time->tv_nsec = 0;
2919 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
2920 return -EIO;
2921 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
2922 status = decode_attr_time(xdr, time);
2923 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
2924 }
2925 dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2926 return status;
2927}
2928
2929static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2930{
2931 int status = 0;
2932
2933 time->tv_sec = 0;
2934 time->tv_nsec = 0;
2935 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
2936 return -EIO;
2937 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
2938 status = decode_attr_time(xdr, time);
2939 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
2940 }
2941 dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2942 return status;
2943}
2944
8687b63a 2945static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
1da177e4
LT		 2946{
2947 unsigned int attrwords = XDR_QUADLEN(attrlen);
2948 unsigned int nwords = xdr->p - savep;
2949
2950 if (unlikely(attrwords != nwords)) {
2951 printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n",
2952 __FUNCTION__,
2953 attrwords << 2,
2954 (attrwords < nwords) ? '<' : '>',
2955 nwords << 2);
2956 return -EIO;
2957 }
2958 return 0;
2959}
2960
2961static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2962{
8687b63a 2963 __be32 *p;
1da177e4
LT		 2964
2965 READ_BUF(20);
2966 READ32(cinfo->atomic);
2967 READ64(cinfo->before);
2968 READ64(cinfo->after);
2969 return 0;
2970}
2971
2972static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
2973{
8687b63a 2974 __be32 *p;
1da177e4
LT		 2975 uint32_t supp, acc;
2976 int status;
2977
2978 status = decode_op_hdr(xdr, OP_ACCESS);
2979 if (status)
2980 return status;
2981 READ_BUF(8);
2982 READ32(supp);
2983 READ32(acc);
2984 access->supported = supp;
2985 access->access = acc;
2986 return 0;
2987}
2988
2989static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
2990{
8687b63a 2991 __be32 *p;
1da177e4
LT		 2992 int status;
2993
2994 status = decode_op_hdr(xdr, OP_CLOSE);
2995 if (status)
2996 return status;
8ae20abd
TM		 2997 READ_BUF(NFS4_STATEID_SIZE);
2998 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
1da177e4
LT		 2999 return 0;
3000}
3001
3002static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
3003{
8687b63a 3004 __be32 *p;
1da177e4
LT		 3005 int status;
3006
3007 status = decode_op_hdr(xdr, OP_COMMIT);
3008 if (status)
3009 return status;
3010 READ_BUF(8);
3011 COPYMEM(res->verf->verifier, 8);
3012 return 0;
3013}
3014
3015static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3016{
8687b63a 3017 __be32 *p;
1da177e4
LT		 3018 uint32_t bmlen;
3019 int status;
3020
3021 status = decode_op_hdr(xdr, OP_CREATE);
3022 if (status)
3023 return status;
3024 if ((status = decode_change_info(xdr, cinfo)))
3025 return status;
3026 READ_BUF(4);
3027 READ32(bmlen);
3028 READ_BUF(bmlen << 2);
3029 return 0;
3030}
3031
3032static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
3033{
8687b63a 3034 __be32 *savep;
1da177e4
LT		 3035 uint32_t attrlen,
3036 bitmap[2] = {0};
3037 int status;
3038
3039 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3040 goto xdr_error;
3041 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3042 goto xdr_error;
3043 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3044 goto xdr_error;
3045 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
3046 goto xdr_error;
3047 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
3048 goto xdr_error;
3049 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
3050 goto xdr_error;
3051 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
3052 goto xdr_error;
3053 status = verify_attr_len(xdr, savep, attrlen);
3054xdr_error:
16c32b71 3055 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 3056 return status;
3057}
3058
3059static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
3060{
8687b63a 3061 __be32 *savep;
1da177e4
LT		 3062 uint32_t attrlen,
3063 bitmap[2] = {0};
3064 int status;
3065
3066 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3067 goto xdr_error;
3068 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3069 goto xdr_error;
3070 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3071 goto xdr_error;
3072
3073 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
3074 goto xdr_error;
3075 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
3076 goto xdr_error;
3077 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
3078 goto xdr_error;
3079 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
3080 goto xdr_error;
3081 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
3082 goto xdr_error;
3083 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
3084 goto xdr_error;
3085
3086 status = verify_attr_len(xdr, savep, attrlen);
3087xdr_error:
16c32b71 3088 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 3089 return status;
3090}
3091
3092static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
3093{
8687b63a 3094 __be32 *savep;
1da177e4
LT		 3095 uint32_t attrlen,
3096 bitmap[2] = {0};
3097 int status;
3098
3099 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3100 goto xdr_error;
3101 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3102 goto xdr_error;
3103 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3104 goto xdr_error;
3105
3106 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
3107 goto xdr_error;
3108 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
3109 goto xdr_error;
3110
3111 status = verify_attr_len(xdr, savep, attrlen);
3112xdr_error:
16c32b71 3113 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 3114 return status;
3115}
3116
3117static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
3118{
8687b63a 3119 __be32 *savep;
1da177e4
LT		 3120 uint32_t attrlen,
3121 bitmap[2] = {0},
3122 type;
3123 int status, fmode = 0;
99baf625 3124 uint64_t fileid;
1da177e4
LT		 3125
3126 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3127 goto xdr_error;
3128 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3129 goto xdr_error;
3130
3131 fattr->bitmap[0] = bitmap[0];
3132 fattr->bitmap[1] = bitmap[1];
3133
3134 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3135 goto xdr_error;
3136
3137
3138 if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
3139 goto xdr_error;
3140 fattr->type = nfs_type2fmt[type].nfs2type;
3141 fmode = nfs_type2fmt[type].mode;
3142
3143 if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
3144 goto xdr_error;
3145 if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
3146 goto xdr_error;
8b4bdcf8 3147 if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid)) != 0)
1da177e4
LT		 3148 goto xdr_error;
3149 if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
3150 goto xdr_error;
683b57b4 3151 if ((status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
7aaa0b3b 3152 struct nfs4_fs_locations,
683b57b4
TM		 3153 fattr))) != 0)
3154 goto xdr_error;
1da177e4
LT		 3155 if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
3156 goto xdr_error;
3157 fattr->mode |= fmode;
3158 if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
3159 goto xdr_error;
7539bbab 3160 if ((status = decode_attr_owner(xdr, bitmap, server->nfs_client, &fattr->uid)) != 0)
1da177e4 3161 goto xdr_error;
7539bbab 3162 if ((status = decode_attr_group(xdr, bitmap, server->nfs_client, &fattr->gid)) != 0)
1da177e4
LT		 3163 goto xdr_error;
3164 if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
3165 goto xdr_error;
3166 if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
3167 goto xdr_error;
3168 if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
3169 goto xdr_error;
3170 if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
3171 goto xdr_error;
3172 if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
3173 goto xdr_error;
99baf625
MN		 3174 if ((status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid)) != 0)
3175 goto xdr_error;
3176 if (fattr->fileid == 0 && fileid != 0)
3177 fattr->fileid = fileid;
33801147 3178 if ((status = verify_attr_len(xdr, savep, attrlen)) == 0)
1da177e4 3179 fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
1da177e4 3180xdr_error:
16c32b71 3181 dprintk("%s: xdr returned %d\n", __FUNCTION__, -status);
1da177e4
LT		 3182 return status;
3183}
3184
3185
3186static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
3187{
8687b63a 3188 __be32 *savep;
1da177e4
LT		 3189 uint32_t attrlen, bitmap[2];
3190 int status;
3191
3192 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3193 goto xdr_error;
3194 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3195 goto xdr_error;
3196 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3197 goto xdr_error;
3198
3199 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
3200
3201 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
3202 goto xdr_error;
3203 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
3204 goto xdr_error;
3205 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
3206 goto xdr_error;
3207 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
3208 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
3209 goto xdr_error;
3210 fsinfo->wtpref = fsinfo->wtmax;
3211
3212 status = verify_attr_len(xdr, savep, attrlen);
3213xdr_error:
16c32b71 3214 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
1da177e4
LT		 3215 return status;
3216}
3217
3218static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
3219{
8687b63a 3220 __be32 *p;
1da177e4
LT		 3221 uint32_t len;
3222 int status;
3223
9936781d
TM		 3224 /* Zero handle first to allow comparisons */
3225 memset(fh, 0, sizeof(*fh));
3226
1da177e4
LT		 3227 status = decode_op_hdr(xdr, OP_GETFH);
3228 if (status)
3229 return status;
1da177e4
LT		 3230
3231 READ_BUF(4);
3232 READ32(len);
3233 if (len > NFS4_FHSIZE)
3234 return -EIO;
3235 fh->size = len;
3236 READ_BUF(len);
3237 COPYMEM(fh->data, len);
3238 return 0;
3239}
3240
3241static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3242{
3243 int status;
3244
3245 status = decode_op_hdr(xdr, OP_LINK);
3246 if (status)
3247 return status;
3248 return decode_change_info(xdr, cinfo);
3249}
3250
3251/*
3252 * We create the owner, so we know a proper owner.id length is 4.
3253 */
911d1aaf 3254static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
1da177e4 3255{
911d1aaf 3256 uint64_t offset, length, clientid;
8687b63a 3257 __be32 *p;
911d1aaf 3258 uint32_t namelen, type;
1da177e4
LT		 3259
3260 READ_BUF(32);
911d1aaf
TM		 3261 READ64(offset);
3262 READ64(length);
3263 READ32(type);
3264 if (fl != NULL) {
3265 fl->fl_start = (loff_t)offset;
3266 fl->fl_end = fl->fl_start + (loff_t)length - 1;
3267 if (length == ~(uint64_t)0)
3268 fl->fl_end = OFFSET_MAX;
3269 fl->fl_type = F_WRLCK;
3270 if (type & 1)
3271 fl->fl_type = F_RDLCK;
3272 fl->fl_pid = 0;
3273 }
3274 READ64(clientid);
1da177e4
LT		 3275 READ32(namelen);
3276 READ_BUF(namelen);
1da177e4
LT		 3277 return -NFS4ERR_DENIED;
3278}
3279
911d1aaf 3280static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
1da177e4 3281{
8687b63a 3282 __be32 *p;
1da177e4
LT		 3283 int status;
3284
3285 status = decode_op_hdr(xdr, OP_LOCK);
3286 if (status == 0) {
8ae20abd
TM		 3287 READ_BUF(NFS4_STATEID_SIZE);
3288 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
1da177e4 3289 } else if (status == -NFS4ERR_DENIED)
911d1aaf 3290 return decode_lock_denied(xdr, NULL);
1da177e4
LT		 3291 return status;
3292}
3293
911d1aaf 3294static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
1da177e4
LT		 3295{
3296 int status;
3297 status = decode_op_hdr(xdr, OP_LOCKT);
3298 if (status == -NFS4ERR_DENIED)
911d1aaf 3299 return decode_lock_denied(xdr, res->denied);
1da177e4
LT		 3300 return status;
3301}
3302
911d1aaf 3303static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
1da177e4 3304{
8687b63a 3305 __be32 *p;
1da177e4
LT		 3306 int status;
3307
3308 status = decode_op_hdr(xdr, OP_LOCKU);
3309 if (status == 0) {
8ae20abd
TM		 3310 READ_BUF(NFS4_STATEID_SIZE);
3311 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
1da177e4
LT		 3312 }
3313 return status;
3314}
3315
3316static int decode_lookup(struct xdr_stream *xdr)
3317{
3318 return decode_op_hdr(xdr, OP_LOOKUP);
3319}
3320
3321/* This is too sick! */
3322static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
3323{
8687b63a 3324 __be32 *p;
1da177e4
LT		 3325 uint32_t limit_type, nblocks, blocksize;
3326
3327 READ_BUF(12);
3328 READ32(limit_type);
3329 switch (limit_type) {
3330 case 1:
3331 READ64(*maxsize);
3332 break;
3333 case 2:
3334 READ32(nblocks);
3335 READ32(blocksize);
3336 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
3337 }
3338 return 0;
3339}
3340
3341static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
3342{
8687b63a 3343 __be32 *p;
1da177e4
LT		 3344 uint32_t delegation_type;
3345
3346 READ_BUF(4);
3347 READ32(delegation_type);
3348 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
3349 res->delegation_type = 0;
3350 return 0;
3351 }
8ae20abd
TM		 3352 READ_BUF(NFS4_STATEID_SIZE+4);
3353 COPYMEM(res->delegation.data, NFS4_STATEID_SIZE);
1da177e4
LT		 3354 READ32(res->do_recall);
3355 switch (delegation_type) {
3356 case NFS4_OPEN_DELEGATE_READ:
3357 res->delegation_type = FMODE_READ;
3358 break;
3359 case NFS4_OPEN_DELEGATE_WRITE:
3360 res->delegation_type = FMODE_WRITE|FMODE_READ;
3361 if (decode_space_limit(xdr, &res->maxsize) < 0)
3362 return -EIO;
3363 }
7539bbab 3364 return decode_ace(xdr, NULL, res->server->nfs_client);
1da177e4
LT		 3365}
3366
3367static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
3368{
8687b63a 3369 __be32 *p;
aa53ed54 3370 uint32_t savewords, bmlen, i;
1da177e4
LT		 3371 int status;
3372
3373 status = decode_op_hdr(xdr, OP_OPEN);
3374 if (status)
3375 return status;
8ae20abd
TM		 3376 READ_BUF(NFS4_STATEID_SIZE);
3377 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
1da177e4
LT		 3378
3379 decode_change_info(xdr, &res->cinfo);
3380
3381 READ_BUF(8);
3382 READ32(res->rflags);
3383 READ32(bmlen);
3384 if (bmlen > 10)
3385 goto xdr_error;
3386
3387 READ_BUF(bmlen << 2);
aa53ed54
JL		 3388 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
3389 for (i = 0; i < savewords; ++i)
3390 READ32(res->attrset[i]);
3391 for (; i < NFS4_BITMAP_SIZE; i++)
3392 res->attrset[i] = 0;
3393
1da177e4
LT		 3394 return decode_delegation(xdr, res);
3395xdr_error:
16c32b71 3396 dprintk("%s: Bitmap too large! Length = %u\n", __FUNCTION__, bmlen);
1da177e4
LT		 3397 return -EIO;
3398}
3399
3400static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3401{
8687b63a 3402 __be32 *p;
1da177e4
LT		 3403 int status;
3404
3405 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3406 if (status)
3407 return status;
8ae20abd
TM		 3408 READ_BUF(NFS4_STATEID_SIZE);
3409 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
1da177e4
LT		 3410 return 0;
3411}
3412
3413static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3414{
8687b63a 3415 __be32 *p;
1da177e4
LT		 3416 int status;
3417
3418 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3419 if (status)
3420 return status;
8ae20abd
TM		 3421 READ_BUF(NFS4_STATEID_SIZE);
3422 COPYMEM(res->stateid.data, NFS4_STATEID_SIZE);
1da177e4
LT		 3423 return 0;
3424}
3425
3426static int decode_putfh(struct xdr_stream *xdr)
3427{
3428 return decode_op_hdr(xdr, OP_PUTFH);
3429}
3430
3431static int decode_putrootfh(struct xdr_stream *xdr)
3432{
3433 return decode_op_hdr(xdr, OP_PUTROOTFH);
3434}
3435
3436static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3437{
3438 struct kvec *iov = req->rq_rcv_buf.head;
8687b63a 3439 __be32 *p;
1da177e4
LT		 3440 uint32_t count, eof, recvd, hdrlen;
3441 int status;
3442
3443 status = decode_op_hdr(xdr, OP_READ);
3444 if (status)
3445 return status;
3446 READ_BUF(8);
3447 READ32(eof);
3448 READ32(count);
3449 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3450 recvd = req->rq_rcv_buf.len - hdrlen;
3451 if (count > recvd) {
3452 printk(KERN_WARNING "NFS: server cheating in read reply: "
3453 "count %u > recvd %u\n", count, recvd);
3454 count = recvd;
3455 eof = 0;
3456 }
3457 xdr_read_pages(xdr, count);
3458 res->eof = eof;
3459 res->count = count;
3460 return 0;
3461}
3462
3463static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3464{
3465 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3466 struct page *page = *rcvbuf->pages;
3467 struct kvec *iov = rcvbuf->head;
3468 unsigned int nr, pglen = rcvbuf->page_len;
8687b63a 3469 __be32 *end, *entry, *p, *kaddr;
e8896495 3470 uint32_t len, attrlen, xlen;
1da177e4
LT		 3471 int hdrlen, recvd, status;
3472
3473 status = decode_op_hdr(xdr, OP_READDIR);
3474 if (status)
3475 return status;
3476 READ_BUF(8);
3477 COPYMEM(readdir->verifier.data, 8);
eadf4598
TM		 3478 dprintk("%s: verifier = 0x%x%x\n",
3479 __FUNCTION__,
3480 ((u32 *)readdir->verifier.data)[0],
3481 ((u32 *)readdir->verifier.data)[1]);
3482
1da177e4
LT		 3483
3484 hdrlen = (char *) p - (char *) iov->iov_base;
3485 recvd = rcvbuf->len - hdrlen;
3486 if (pglen > recvd)
3487 pglen = recvd;
3488 xdr_read_pages(xdr, pglen);
3489
3490 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
8687b63a 3491 kaddr = p = kmap_atomic(page, KM_USER0);
e8896495 3492 end = p + ((pglen + readdir->pgbase) >> 2);
1da177e4
LT		 3493 entry = p;
3494 for (nr = 0; *p++; nr++) {
e8896495 3495 if (end - p < 3)
1da177e4 3496 goto short_pkt;
eadf4598 3497 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
1da177e4
LT		 3498 p += 2; /* cookie */
3499 len = ntohl(*p++); /* filename length */
3500 if (len > NFS4_MAXNAMLEN) {
3501 printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len);
3502 goto err_unmap;
3503 }
e8896495
DH		 3504 xlen = XDR_QUADLEN(len);
3505 if (end - p < xlen + 1)
1da177e4 3506 goto short_pkt;
e8896495
DH		 3507 dprintk("filename = %*s\n", len, (char *)p);
3508 p += xlen;
1da177e4 3509 len = ntohl(*p++); /* bitmap length */
e8896495 3510 if (end - p < len + 1)
1da177e4 3511 goto short_pkt;
e8896495 3512 p += len;
1da177e4 3513 attrlen = XDR_QUADLEN(ntohl(*p++));
e8896495 3514 if (end - p < attrlen + 2)
1da177e4 3515 goto short_pkt;
e8896495 3516 p += attrlen; /* attributes */
1da177e4
LT		 3517 entry = p;
3518 }
3519 if (!nr && (entry[0] != 0 || entry[1] == 0))
3520 goto short_pkt;
3521out:
3522 kunmap_atomic(kaddr, KM_USER0);
3523 return 0;
3524short_pkt:
eadf4598 3525 dprintk("%s: short packet at entry %d\n", __FUNCTION__, nr);
1da177e4
LT		 3526 entry[0] = entry[1] = 0;
3527 /* truncate listing ? */
3528 if (!nr) {
3529 printk(KERN_NOTICE "NFS: readdir reply truncated!\n");
3530 entry[1] = 1;
3531 }
3532 goto out;
3533err_unmap:
3534 kunmap_atomic(kaddr, KM_USER0);
3535 return -errno_NFSERR_IO;
3536}
3537
3538static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3539{
3540 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3541 struct kvec *iov = rcvbuf->head;
3542 int hdrlen, len, recvd;
8687b63a 3543 __be32 *p;
1da177e4
LT		 3544 char *kaddr;
3545 int status;
3546
3547 status = decode_op_hdr(xdr, OP_READLINK);
3548 if (status)
3549 return status;
3550
3551 /* Convert length of symlink */
3552 READ_BUF(4);
3553 READ32(len);
3554 if (len >= rcvbuf->page_len || len <= 0) {
3555 dprintk(KERN_WARNING "nfs: server returned giant symlink!\n");
3556 return -ENAMETOOLONG;
3557 }
3558 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3559 recvd = req->rq_rcv_buf.len - hdrlen;
3560 if (recvd < len) {
3561 printk(KERN_WARNING "NFS: server cheating in readlink reply: "
3562 "count %u > recvd %u\n", len, recvd);
3563 return -EIO;
3564 }
3565 xdr_read_pages(xdr, len);
3566 /*
3567 * The XDR encode routine has set things up so that
3568 * the link text will be copied directly into the
3569 * buffer. We just have to do overflow-checking,
3570 * and and null-terminate the text (the VFS expects
3571 * null-termination).
3572 */
3573 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3574 kaddr[len+rcvbuf->page_base] = '\0';
3575 kunmap_atomic(kaddr, KM_USER0);
3576 return 0;
3577}
3578
3579static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3580{
3581 int status;
3582
3583 status = decode_op_hdr(xdr, OP_REMOVE);
3584 if (status)
3585 goto out;
3586 status = decode_change_info(xdr, cinfo);
3587out:
3588 return status;
3589}
3590
3591static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3592 struct nfs4_change_info *new_cinfo)
3593{
3594 int status;
3595
3596 status = decode_op_hdr(xdr, OP_RENAME);
3597 if (status)
3598 goto out;
3599 if ((status = decode_change_info(xdr, old_cinfo)))
3600 goto out;
3601 status = decode_change_info(xdr, new_cinfo);
3602out:
3603 return status;
3604}
3605
3606static int decode_renew(struct xdr_stream *xdr)
3607{
3608 return decode_op_hdr(xdr, OP_RENEW);
3609}
3610
56ae19f3
TM		 3611static int
3612decode_restorefh(struct xdr_stream *xdr)
3613{
3614 return decode_op_hdr(xdr, OP_RESTOREFH);
3615}
3616
029d105e
BF		 3617static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
3618 size_t *acl_len)
3619{
8687b63a 3620 __be32 *savep;
029d105e
BF		 3621 uint32_t attrlen,
3622 bitmap[2] = {0};
3623 struct kvec *iov = req->rq_rcv_buf.head;
3624 int status;
3625
3626 *acl_len = 0;
3627 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3628 goto out;
3629 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3630 goto out;
3631 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3632 goto out;
3633
3634 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
3635 return -EIO;
3636 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
3637 int hdrlen, recvd;
3638
3639 /* We ignore &savep and don't do consistency checks on
3640 * the attr length. Let userspace figure it out.... */
3641 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
3642 recvd = req->rq_rcv_buf.len - hdrlen;
3643 if (attrlen > recvd) {
3644 printk(KERN_WARNING "NFS: server cheating in getattr"
3645 " acl reply: attrlen %u > recvd %u\n",
3646 attrlen, recvd);
3647 return -EINVAL;
3648 }
c04871e6 3649 xdr_read_pages(xdr, attrlen);
029d105e 3650 *acl_len = attrlen;
8c233cf9
BF		 3651 } else
3652 status = -EOPNOTSUPP;
029d105e
BF		 3653
3654out:
3655 return status;
3656}
3657
1da177e4
LT		 3658static int
3659decode_savefh(struct xdr_stream *xdr)
3660{
3661 return decode_op_hdr(xdr, OP_SAVEFH);
3662}
3663
3664static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res)
3665{
8687b63a 3666 __be32 *p;
1da177e4
LT		 3667 uint32_t bmlen;
3668 int status;
3669
3670
3671 status = decode_op_hdr(xdr, OP_SETATTR);
3672 if (status)
3673 return status;
3674 READ_BUF(4);
3675 READ32(bmlen);
3676 READ_BUF(bmlen << 2);
3677 return 0;
3678}
3679
adfa6f98 3680static int decode_setclientid(struct xdr_stream *xdr, struct nfs_client *clp)
1da177e4 3681{
8687b63a 3682 __be32 *p;
1da177e4
LT		 3683 uint32_t opnum;
3684 int32_t nfserr;
3685
3686 READ_BUF(8);
3687 READ32(opnum);
3688 if (opnum != OP_SETCLIENTID) {
3689 printk(KERN_NOTICE
3690 "nfs4_decode_setclientid: Server returned operation"
3691 " %d\n", opnum);
3692 return -EIO;
3693 }
3694 READ32(nfserr);
3695 if (nfserr == NFS_OK) {
8ae20abd 3696 READ_BUF(8 + NFS4_VERIFIER_SIZE);
1da177e4 3697 READ64(clp->cl_clientid);
8ae20abd 3698 COPYMEM(clp->cl_confirm.data, NFS4_VERIFIER_SIZE);
1da177e4
LT		 3699 } else if (nfserr == NFSERR_CLID_INUSE) {
3700 uint32_t len;
3701
3702 /* skip netid string */
3703 READ_BUF(4);
3704 READ32(len);
3705 READ_BUF(len);
3706
3707 /* skip uaddr string */
3708 READ_BUF(4);
3709 READ32(len);
3710 READ_BUF(len);
3711 return -NFSERR_CLID_INUSE;
3712 } else
0a8ea437 3713 return -nfs4_stat_to_errno(nfserr);
1da177e4
LT		 3714
3715 return 0;
3716}
3717
3718static int decode_setclientid_confirm(struct xdr_stream *xdr)
3719{
3720 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
3721}
3722
3723static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
3724{
8687b63a 3725 __be32 *p;
1da177e4
LT		 3726 int status;
3727
3728 status = decode_op_hdr(xdr, OP_WRITE);
3729 if (status)
3730 return status;
3731
3732 READ_BUF(16);
3733 READ32(res->count);
3734 READ32(res->verf->committed);
3735 COPYMEM(res->verf->verifier, 8);
3736 return 0;
3737}
3738
3739static int decode_delegreturn(struct xdr_stream *xdr)
3740{
3741 return decode_op_hdr(xdr, OP_DELEGRETURN);
3742}
3743
3744/*
3745 * Decode OPEN_DOWNGRADE response
3746 */
8687b63a 3747static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
1da177e4
LT		 3748{
3749 struct xdr_stream xdr;
3750 struct compound_hdr hdr;
3751 int status;
3752
3753 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3754 status = decode_compound_hdr(&xdr, &hdr);
3755 if (status)
3756 goto out;
3757 status = decode_putfh(&xdr);
3758 if (status)
3759 goto out;
3760 status = decode_open_downgrade(&xdr, res);
516a6af6
TM		 3761 if (status != 0)
3762 goto out;
3763 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 3764out:
3765 return status;
3766}
3767
3768/*
3769 * END OF "GENERIC" DECODE ROUTINES.
3770 */
3771
3772/*
3773 * Decode ACCESS response
3774 */
8687b63a 3775static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res)
1da177e4
LT		 3776{
3777 struct xdr_stream xdr;
3778 struct compound_hdr hdr;
3779 int status;
3780
3781 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3782 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3783 goto out;
3784 if ((status = decode_putfh(&xdr)) == 0)
3785 status = decode_access(&xdr, res);
3786out:
3787 return status;
3788}
3789
3790/*
3791 * Decode LOOKUP response
3792 */
8687b63a 3793static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
1da177e4
LT		 3794{
3795 struct xdr_stream xdr;
3796 struct compound_hdr hdr;
3797 int status;
3798
3799 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3800 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3801 goto out;
3802 if ((status = decode_putfh(&xdr)) != 0)
3803 goto out;
3804 if ((status = decode_lookup(&xdr)) != 0)
3805 goto out;
3806 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3807 goto out;
3808 status = decode_getfattr(&xdr, res->fattr, res->server);
3809out:
3810 return status;
3811}
3812
3813/*
3814 * Decode LOOKUP_ROOT response
3815 */
8687b63a 3816static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
1da177e4
LT		 3817{
3818 struct xdr_stream xdr;
3819 struct compound_hdr hdr;
3820 int status;
3821
3822 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3823 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3824 goto out;
3825 if ((status = decode_putrootfh(&xdr)) != 0)
3826 goto out;
3827 if ((status = decode_getfh(&xdr, res->fh)) == 0)
3828 status = decode_getfattr(&xdr, res->fattr, res->server);
3829out:
3830 return status;
3831}
3832
3833/*
3834 * Decode REMOVE response
3835 */
8687b63a 3836static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_remove_res *res)
1da177e4
LT		 3837{
3838 struct xdr_stream xdr;
3839 struct compound_hdr hdr;
3840 int status;
3841
3842 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3843 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3844 goto out;
16e42959
TM		 3845 if ((status = decode_putfh(&xdr)) != 0)
3846 goto out;
3847 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
3848 goto out;
3849 decode_getfattr(&xdr, res->dir_attr, res->server);
1da177e4
LT		 3850out:
3851 return status;
3852}
3853
3854/*
3855 * Decode RENAME response
3856 */
8687b63a 3857static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_rename_res *res)
1da177e4
LT		 3858{
3859 struct xdr_stream xdr;
3860 struct compound_hdr hdr;
3861 int status;
3862
3863 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3864 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3865 goto out;
3866 if ((status = decode_putfh(&xdr)) != 0)
3867 goto out;
3868 if ((status = decode_savefh(&xdr)) != 0)
3869 goto out;
3870 if ((status = decode_putfh(&xdr)) != 0)
3871 goto out;
6caf2c82
TM		 3872 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
3873 goto out;
3874 /* Current FH is target directory */
3875 if (decode_getfattr(&xdr, res->new_fattr, res->server) != 0)
3876 goto out;
3877 if ((status = decode_restorefh(&xdr)) != 0)
3878 goto out;
3879 decode_getfattr(&xdr, res->old_fattr, res->server);
1da177e4
LT		 3880out:
3881 return status;
3882}
3883
3884/*
3885 * Decode LINK response
3886 */
8687b63a 3887static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res)
1da177e4
LT		 3888{
3889 struct xdr_stream xdr;
3890 struct compound_hdr hdr;
3891 int status;
3892
3893 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3894 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3895 goto out;
3896 if ((status = decode_putfh(&xdr)) != 0)
3897 goto out;
3898 if ((status = decode_savefh(&xdr)) != 0)
3899 goto out;
3900 if ((status = decode_putfh(&xdr)) != 0)
3901 goto out;
91ba2eee
TM		 3902 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
3903 goto out;
3904 /*
3905 * Note order: OP_LINK leaves the directory as the current
3906 * filehandle.
3907 */
3908 if (decode_getfattr(&xdr, res->dir_attr, res->server) != 0)
3909 goto out;
3910 if ((status = decode_restorefh(&xdr)) != 0)
3911 goto out;
3912 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 3913out:
3914 return status;
3915}
3916
3917/*
3918 * Decode CREATE response
3919 */
8687b63a 3920static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
1da177e4
LT		 3921{
3922 struct xdr_stream xdr;
3923 struct compound_hdr hdr;
3924 int status;
3925
3926 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3927 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3928 goto out;
3929 if ((status = decode_putfh(&xdr)) != 0)
3930 goto out;
56ae19f3
TM		 3931 if ((status = decode_savefh(&xdr)) != 0)
3932 goto out;
1da177e4
LT		 3933 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
3934 goto out;
3935 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3936 goto out;
56ae19f3
TM		 3937 if (decode_getfattr(&xdr, res->fattr, res->server) != 0)
3938 goto out;
3939 if ((status = decode_restorefh(&xdr)) != 0)
3940 goto out;
3941 decode_getfattr(&xdr, res->dir_fattr, res->server);
1da177e4
LT		 3942out:
3943 return status;
3944}
3945
3946/*
3947 * Decode SYMLINK response
3948 */
8687b63a 3949static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
1da177e4
LT		 3950{
3951 return nfs4_xdr_dec_create(rqstp, p, res);
3952}
3953
3954/*
3955 * Decode GETATTR response
3956 */
8687b63a 3957static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res)
1da177e4
LT		 3958{
3959 struct xdr_stream xdr;
3960 struct compound_hdr hdr;
3961 int status;
3962
3963 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3964 status = decode_compound_hdr(&xdr, &hdr);
3965 if (status)
3966 goto out;
3967 status = decode_putfh(&xdr);
3968 if (status)
3969 goto out;
3970 status = decode_getfattr(&xdr, res->fattr, res->server);
3971out:
3972 return status;
3973
3974}
3975
23ec6965
BF		 3976/*
3977 * Encode an SETACL request
3978 */
3979static int
8687b63a 3980nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args)
23ec6965
BF		 3981{
3982 struct xdr_stream xdr;
3983 struct compound_hdr hdr = {
3984 .nops = 2,
3985 };
3986 int status;
3987
3988 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
3989 encode_compound_hdr(&xdr, &hdr);
3990 status = encode_putfh(&xdr, args->fh);
3991 if (status)
3992 goto out;
3993 status = encode_setacl(&xdr, args);
3994out:
3995 return status;
3996}
3997/*
3998 * Decode SETACL response
3999 */
4000static int
8687b63a 4001nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p, void *res)
23ec6965
BF		 4002{
4003 struct xdr_stream xdr;
4004 struct compound_hdr hdr;
4005 int status;
4006
4007 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4008 status = decode_compound_hdr(&xdr, &hdr);
4009 if (status)
4010 goto out;
4011 status = decode_putfh(&xdr);
4012 if (status)
4013 goto out;
4014 status = decode_setattr(&xdr, res);
4015out:
4016 return status;
4017}
1da177e4 4018
029d105e
BF		 4019/*
4020 * Decode GETACL response
4021 */
4022static int
8687b63a 4023nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p, size_t *acl_len)
029d105e
BF		 4024{
4025 struct xdr_stream xdr;
4026 struct compound_hdr hdr;
4027 int status;
4028
4029 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4030 status = decode_compound_hdr(&xdr, &hdr);
4031 if (status)
4032 goto out;
4033 status = decode_putfh(&xdr);
4034 if (status)
4035 goto out;
4036 status = decode_getacl(&xdr, rqstp, acl_len);
4037
4038out:
4039 return status;
4040}
4041
1da177e4
LT		 4042/*
4043 * Decode CLOSE response
4044 */
8687b63a 4045static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
1da177e4
LT		 4046{
4047 struct xdr_stream xdr;
4048 struct compound_hdr hdr;
4049 int status;
4050
4051 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4052 status = decode_compound_hdr(&xdr, &hdr);
4053 if (status)
4054 goto out;
4055 status = decode_putfh(&xdr);
4056 if (status)
4057 goto out;
4058 status = decode_close(&xdr, res);
516a6af6
TM		 4059 if (status != 0)
4060 goto out;
4061 /*
4062 * Note: Server may do delete on close for this file
4063 * in which case the getattr call will fail with
4064 * an ESTALE error. Shouldn't be a problem,
4065 * though, since fattr->valid will remain unset.
4066 */
4067 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 4068out:
4069 return status;
4070}
4071
4072/*
4073 * Decode OPEN response
4074 */
8687b63a 4075static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
1da177e4
LT		 4076{
4077 struct xdr_stream xdr;
4078 struct compound_hdr hdr;
4079 int status;
4080
4081 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4082 status = decode_compound_hdr(&xdr, &hdr);
4083 if (status)
4084 goto out;
4085 status = decode_putfh(&xdr);
4086 if (status)
4087 goto out;
56ae19f3
TM		 4088 status = decode_savefh(&xdr);
4089 if (status)
4090 goto out;
1da177e4
LT		 4091 status = decode_open(&xdr, res);
4092 if (status)
4093 goto out;
9936781d 4094 if (decode_getfh(&xdr, &res->fh) != 0)
1da177e4 4095 goto out;
56ae19f3
TM		 4096 if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
4097 goto out;
365c8f58 4098 if (decode_restorefh(&xdr) != 0)
56ae19f3
TM		 4099 goto out;
4100 decode_getfattr(&xdr, res->dir_attr, res->server);
1da177e4
LT		 4101out:
4102 return status;
4103}
4104
4105/*
4106 * Decode OPEN_CONFIRM response
4107 */
8687b63a 4108static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res)
1da177e4
LT		 4109{
4110 struct xdr_stream xdr;
4111 struct compound_hdr hdr;
4112 int status;
4113
4114 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4115 status = decode_compound_hdr(&xdr, &hdr);
4116 if (status)
4117 goto out;
4118 status = decode_putfh(&xdr);
4119 if (status)
4120 goto out;
4121 status = decode_open_confirm(&xdr, res);
4122out:
4123 return status;
4124}
4125
4126/*
4127 * Decode OPEN response
4128 */
8687b63a 4129static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
1da177e4
LT		 4130{
4131 struct xdr_stream xdr;
4132 struct compound_hdr hdr;
4133 int status;
4134
4135 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4136 status = decode_compound_hdr(&xdr, &hdr);
4137 if (status)
4138 goto out;
4139 status = decode_putfh(&xdr);
4140 if (status)
4141 goto out;
4142 status = decode_open(&xdr, res);
864472e9
TM		 4143 if (status)
4144 goto out;
4145 decode_getfattr(&xdr, res->f_attr, res->server);
1da177e4
LT		 4146out:
4147 return status;
4148}
4149
4150/*
4151 * Decode SETATTR response
4152 */
8687b63a 4153static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res)
1da177e4
LT		 4154{
4155 struct xdr_stream xdr;
4156 struct compound_hdr hdr;
4157 int status;
4158
4159 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4160 status = decode_compound_hdr(&xdr, &hdr);
4161 if (status)
4162 goto out;
4163 status = decode_putfh(&xdr);
4164 if (status)
4165 goto out;
4166 status = decode_setattr(&xdr, res);
4167 if (status)
4168 goto out;
4169 status = decode_getfattr(&xdr, res->fattr, res->server);
4170 if (status == NFS4ERR_DELAY)
4171 status = 0;
4172out:
4173 return status;
4174}
4175
4176/*
4177 * Decode LOCK response
4178 */
8687b63a 4179static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res)
1da177e4
LT		 4180{
4181 struct xdr_stream xdr;
4182 struct compound_hdr hdr;
4183 int status;
4184
4185 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4186 status = decode_compound_hdr(&xdr, &hdr);
4187 if (status)
4188 goto out;
4189 status = decode_putfh(&xdr);
4190 if (status)
4191 goto out;
4192 status = decode_lock(&xdr, res);
4193out:
4194 return status;
4195}
4196
4197/*
4198 * Decode LOCKT response
4199 */
8687b63a 4200static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res)
1da177e4
LT		 4201{
4202 struct xdr_stream xdr;
4203 struct compound_hdr hdr;
4204 int status;
4205
4206 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4207 status = decode_compound_hdr(&xdr, &hdr);
4208 if (status)
4209 goto out;
4210 status = decode_putfh(&xdr);
4211 if (status)
4212 goto out;
4213 status = decode_lockt(&xdr, res);
4214out:
4215 return status;
4216}
4217
4218/*
4219 * Decode LOCKU response
4220 */
8687b63a 4221static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res)
1da177e4
LT		 4222{
4223 struct xdr_stream xdr;
4224 struct compound_hdr hdr;
4225 int status;
4226
4227 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4228 status = decode_compound_hdr(&xdr, &hdr);
4229 if (status)
4230 goto out;
4231 status = decode_putfh(&xdr);
4232 if (status)
4233 goto out;
4234 status = decode_locku(&xdr, res);
4235out:
4236 return status;
4237}
4238
4239/*
4240 * Decode READLINK response
4241 */
8687b63a 4242static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p, void *res)
1da177e4
LT		 4243{
4244 struct xdr_stream xdr;
4245 struct compound_hdr hdr;
4246 int status;
4247
4248 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4249 status = decode_compound_hdr(&xdr, &hdr);
4250 if (status)
4251 goto out;
4252 status = decode_putfh(&xdr);
4253 if (status)
4254 goto out;
4255 status = decode_readlink(&xdr, rqstp);
4256out:
4257 return status;
4258}
4259
4260/*
4261 * Decode READDIR response
4262 */
8687b63a 4263static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res)
1da177e4
LT		 4264{
4265 struct xdr_stream xdr;
4266 struct compound_hdr hdr;
4267 int status;
4268
4269 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4270 status = decode_compound_hdr(&xdr, &hdr);
4271 if (status)
4272 goto out;
4273 status = decode_putfh(&xdr);
4274 if (status)
4275 goto out;
4276 status = decode_readdir(&xdr, rqstp, res);
4277out:
4278 return status;
4279}
4280
4281/*
4282 * Decode Read response
4283 */
8687b63a 4284static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res)
1da177e4
LT		 4285{
4286 struct xdr_stream xdr;
4287 struct compound_hdr hdr;
4288 int status;
4289
4290 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4291 status = decode_compound_hdr(&xdr, &hdr);
4292 if (status)
4293 goto out;
4294 status = decode_putfh(&xdr);
4295 if (status)
4296 goto out;
4297 status = decode_read(&xdr, rqstp, res);
4298 if (!status)
4299 status = res->count;
4300out:
4301 return status;
4302}
4303
4304/*
4305 * Decode WRITE response
4306 */
8687b63a 4307static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
1da177e4
LT		 4308{
4309 struct xdr_stream xdr;
4310 struct compound_hdr hdr;
4311 int status;
4312
4313 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4314 status = decode_compound_hdr(&xdr, &hdr);
4315 if (status)
4316 goto out;
4317 status = decode_putfh(&xdr);
4318 if (status)
4319 goto out;
4320 status = decode_write(&xdr, res);
4f9838c7
TM		 4321 if (status)
4322 goto out;
4323 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 4324 if (!status)
4325 status = res->count;
4326out:
4327 return status;
4328}
4329
4330/*
4331 * Decode COMMIT response
4332 */
8687b63a 4333static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
1da177e4
LT		 4334{
4335 struct xdr_stream xdr;
4336 struct compound_hdr hdr;
4337 int status;
4338
4339 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4340 status = decode_compound_hdr(&xdr, &hdr);
4341 if (status)
4342 goto out;
4343 status = decode_putfh(&xdr);
4344 if (status)
4345 goto out;
4346 status = decode_commit(&xdr, res);
4f9838c7
TM		 4347 if (status)
4348 goto out;
4349 decode_getfattr(&xdr, res->fattr, res->server);
1da177e4
LT		 4350out:
4351 return status;
4352}
4353
4354/*
4355 * FSINFO request
4356 */
8687b63a 4357static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
1da177e4
LT		 4358{
4359 struct xdr_stream xdr;
4360 struct compound_hdr hdr;
4361 int status;
4362
4363 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4364 status = decode_compound_hdr(&xdr, &hdr);
4365 if (!status)
4366 status = decode_putfh(&xdr);
4367 if (!status)
4368 status = decode_fsinfo(&xdr, fsinfo);
4369 if (!status)
0a8ea437 4370 status = -nfs4_stat_to_errno(hdr.status);
1da177e4
LT		 4371 return status;
4372}
4373
4374/*
4375 * PATHCONF request
4376 */
8687b63a 4377static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *pathconf)
1da177e4
LT		 4378{
4379 struct xdr_stream xdr;
4380 struct compound_hdr hdr;
4381 int status;
4382
4383 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4384 status = decode_compound_hdr(&xdr, &hdr);
4385 if (!status)
4386 status = decode_putfh(&xdr);
4387 if (!status)
4388 status = decode_pathconf(&xdr, pathconf);
4389 return status;
4390}
4391
4392/*
4393 * STATFS request
4394 */
8687b63a 4395static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *fsstat)
1da177e4
LT		 4396{
4397 struct xdr_stream xdr;
4398 struct compound_hdr hdr;
4399 int status;
4400
4401 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4402 status = decode_compound_hdr(&xdr, &hdr);
4403 if (!status)
4404 status = decode_putfh(&xdr);
4405 if (!status)
4406 status = decode_statfs(&xdr, fsstat);
4407 return status;
4408}
4409
4410/*
4411 * GETATTR_BITMAP request
4412 */
8687b63a 4413static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
1da177e4
LT		 4414{
4415 struct xdr_stream xdr;
4416 struct compound_hdr hdr;
4417 int status;
4418
4419 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4420 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
4421 goto out;
4422 if ((status = decode_putfh(&xdr)) != 0)
4423 goto out;
4424 status = decode_server_caps(&xdr, res);
4425out:
4426 return status;
4427}
4428
4429/*
4430 * Decode RENEW response
4431 */
8687b63a 4432static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
1da177e4
LT		 4433{
4434 struct xdr_stream xdr;
4435 struct compound_hdr hdr;
4436 int status;
4437
4438 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4439 status = decode_compound_hdr(&xdr, &hdr);
4440 if (!status)
4441 status = decode_renew(&xdr);
4442 return status;
4443}
4444
4445/*
4446 * a SETCLIENTID request
4447 */
8687b63a 4448static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
adfa6f98 4449 struct nfs_client *clp)
1da177e4
LT		 4450{
4451 struct xdr_stream xdr;
4452 struct compound_hdr hdr;
4453 int status;
4454
4455 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4456 status = decode_compound_hdr(&xdr, &hdr);
4457 if (!status)
4458 status = decode_setclientid(&xdr, clp);
4459 if (!status)
0a8ea437 4460 status = -nfs4_stat_to_errno(hdr.status);
1da177e4
LT		 4461 return status;
4462}
4463
4464/*
4465 * a SETCLIENTID_CONFIRM request
4466 */
8687b63a 4467static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
1da177e4
LT		 4468{
4469 struct xdr_stream xdr;
4470 struct compound_hdr hdr;
4471 int status;
4472
4473 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4474 status = decode_compound_hdr(&xdr, &hdr);
4475 if (!status)
4476 status = decode_setclientid_confirm(&xdr);
4477 if (!status)
4478 status = decode_putrootfh(&xdr);
4479 if (!status)
4480 status = decode_fsinfo(&xdr, fsinfo);
4481 if (!status)
0a8ea437 4482 status = -nfs4_stat_to_errno(hdr.status);
1da177e4
LT		 4483 return status;
4484}
4485
4486/*
4487 * DELEGRETURN request
4488 */
8687b63a 4489static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
1da177e4
LT		 4490{
4491 struct xdr_stream xdr;
4492 struct compound_hdr hdr;
4493 int status;
4494
4495 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4496 status = decode_compound_hdr(&xdr, &hdr);
fa178f29
TM		 4497 if (status != 0)
4498 goto out;
4499 status = decode_putfh(&xdr);
4500 if (status != 0)
4501 goto out;
4502 status = decode_delegreturn(&xdr);
4503 decode_getfattr(&xdr, res->fattr, res->server);
4504out:
1da177e4
LT		 4505 return status;
4506}
4507
683b57b4
TM		 4508/*
4509 * FS_LOCATIONS request
4510 */
8687b63a 4511static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations *res)
683b57b4
TM		 4512{
4513 struct xdr_stream xdr;
4514 struct compound_hdr hdr;
4515 int status;
4516
4517 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4518 status = decode_compound_hdr(&xdr, &hdr);
4519 if (status != 0)
4520 goto out;
4521 if ((status = decode_putfh(&xdr)) != 0)
4522 goto out;
4523 if ((status = decode_lookup(&xdr)) != 0)
4524 goto out;
4525 xdr_enter_page(&xdr, PAGE_SIZE);
4526 status = decode_getfattr(&xdr, &res->fattr, res->server);
4527out:
4528 return status;
4529}
4530
0dbb4c67 4531__be32 *nfs4_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus)
1da177e4
LT		 4532{
4533 uint32_t bitmap[2] = {0};
4534 uint32_t len;
4535
4536 if (!*p++) {
4537 if (!*p)
4538 return ERR_PTR(-EAGAIN);
4539 entry->eof = 1;
4540 return ERR_PTR(-EBADCOOKIE);
4541 }
4542
4543 entry->prev_cookie = entry->cookie;
4544 p = xdr_decode_hyper(p, &entry->cookie);
4545 entry->len = ntohl(*p++);
4546 entry->name = (const char *) p;
4547 p += XDR_QUADLEN(entry->len);
4548
4549 /*
4550 * In case the server doesn't return an inode number,
4551 * we fake one here. (We don't use inode number 0,
4552 * since glibc seems to choke on it...)
4553 */
4554 entry->ino = 1;
4555
4556 len = ntohl(*p++); /* bitmap length */
4557 if (len-- > 0) {
4558 bitmap[0] = ntohl(*p++);
4559 if (len-- > 0) {
4560 bitmap[1] = ntohl(*p++);
4561 p += len;
4562 }
4563 }
4564 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
4565 if (len > 0) {
97d312d0
MN		 4566 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
4567 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
4568 /* Ignore the return value of rdattr_error for now */
4569 p++;
4570 len--;
4571 }
1da177e4
LT		 4572 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
4573 xdr_decode_hyper(p, &entry->ino);
4574 else if (bitmap[0] == FATTR4_WORD0_FILEID)
4575 xdr_decode_hyper(p, &entry->ino);
4576 p += len;
4577 }
4578
4579 entry->eof = !p[0] && p[1];
4580 return p;
4581}
4582
4583/*
4584 * We need to translate between nfs status return values and
4585 * the local errno values which may not be the same.
4586 */
4587static struct {
4588 int stat;
4589 int errno;
4590} nfs_errtbl[] = {
4591 { NFS4_OK, 0 },
4592 { NFS4ERR_PERM, EPERM },
4593 { NFS4ERR_NOENT, ENOENT },
4594 { NFS4ERR_IO, errno_NFSERR_IO },
4595 { NFS4ERR_NXIO, ENXIO },
4596 { NFS4ERR_ACCESS, EACCES },
4597 { NFS4ERR_EXIST, EEXIST },
4598 { NFS4ERR_XDEV, EXDEV },
4599 { NFS4ERR_NOTDIR, ENOTDIR },
4600 { NFS4ERR_ISDIR, EISDIR },
4601 { NFS4ERR_INVAL, EINVAL },
4602 { NFS4ERR_FBIG, EFBIG },
4603 { NFS4ERR_NOSPC, ENOSPC },
4604 { NFS4ERR_ROFS, EROFS },
4605 { NFS4ERR_MLINK, EMLINK },
4606 { NFS4ERR_NAMETOOLONG, ENAMETOOLONG },
4607 { NFS4ERR_NOTEMPTY, ENOTEMPTY },
4608 { NFS4ERR_DQUOT, EDQUOT },
4609 { NFS4ERR_STALE, ESTALE },
4610 { NFS4ERR_BADHANDLE, EBADHANDLE },
6ebf3656
MN		 4611 { NFS4ERR_BADOWNER, EINVAL },
4612 { NFS4ERR_BADNAME, EINVAL },
1da177e4
LT		 4613 { NFS4ERR_BAD_COOKIE, EBADCOOKIE },
4614 { NFS4ERR_NOTSUPP, ENOTSUPP },
4615 { NFS4ERR_TOOSMALL, ETOOSMALL },
4616 { NFS4ERR_SERVERFAULT, ESERVERFAULT },
4617 { NFS4ERR_BADTYPE, EBADTYPE },
4618 { NFS4ERR_LOCKED, EAGAIN },
4619 { NFS4ERR_RESOURCE, EREMOTEIO },
4620 { NFS4ERR_SYMLINK, ELOOP },
4621 { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP },
4622 { NFS4ERR_DEADLOCK, EDEADLK },
4623 { NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs
4624 * to be handled by a
4625 * middle-layer.
4626 */
4627 { -1, EIO }
4628};
4629
4630/*
4631 * Convert an NFS error code to a local one.
4632 * This one is used jointly by NFSv2 and NFSv3.
4633 */
4634static int
0a8ea437 4635nfs4_stat_to_errno(int stat)
1da177e4
LT		 4636{
4637 int i;
4638 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
4639 if (nfs_errtbl[i].stat == stat)
4640 return nfs_errtbl[i].errno;
4641 }
4642 if (stat <= 10000 || stat > 10100) {
4643 /* The server is looney tunes. */
4644 return ESERVERFAULT;
4645 }
4646 /* If we cannot translate the error, the recovery routines should
4647 * handle it.
4648 * Note: remaining NFSv4 error codes have values > 10000, so should
4649 * not conflict with native Linux error codes.
4650 */
4651 return stat;
4652}
4653
1da177e4
LT		 4654#define PROC(proc, argtype, restype) \
4655[NFSPROC4_CLNT_##proc] = { \
4656 .p_proc = NFSPROC4_COMPOUND, \
4657 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
4658 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
2bea90d4
CL		 4659 .p_arglen = NFS4_##argtype##_sz, \
4660 .p_replen = NFS4_##restype##_sz, \
cc0175c1
CL		 4661 .p_statidx = NFSPROC4_CLNT_##proc, \
4662 .p_name = #proc, \
1da177e4
LT		 4663 }
4664
4665struct rpc_procinfo nfs4_procedures[] = {
4666 PROC(READ, enc_read, dec_read),
4667 PROC(WRITE, enc_write, dec_write),
4668 PROC(COMMIT, enc_commit, dec_commit),
4669 PROC(OPEN, enc_open, dec_open),
4670 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
4671 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
4672 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
4673 PROC(CLOSE, enc_close, dec_close),
4674 PROC(SETATTR, enc_setattr, dec_setattr),
4675 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
4676 PROC(RENEW, enc_renew, dec_renew),
4677 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
4678 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
4679 PROC(LOCK, enc_lock, dec_lock),
4680 PROC(LOCKT, enc_lockt, dec_lockt),
4681 PROC(LOCKU, enc_locku, dec_locku),
4682 PROC(ACCESS, enc_access, dec_access),
4683 PROC(GETATTR, enc_getattr, dec_getattr),
4684 PROC(LOOKUP, enc_lookup, dec_lookup),
4685 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
4686 PROC(REMOVE, enc_remove, dec_remove),
4687 PROC(RENAME, enc_rename, dec_rename),
4688 PROC(LINK, enc_link, dec_link),
4689 PROC(SYMLINK, enc_symlink, dec_symlink),
4690 PROC(CREATE, enc_create, dec_create),
4691 PROC(PATHCONF, enc_pathconf, dec_pathconf),
4692 PROC(STATFS, enc_statfs, dec_statfs),
4693 PROC(READLINK, enc_readlink, dec_readlink),
4694 PROC(READDIR, enc_readdir, dec_readdir),
4695 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
4696 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
029d105e 4697 PROC(GETACL, enc_getacl, dec_getacl),
23ec6965 4698 PROC(SETACL, enc_setacl, dec_setacl),
683b57b4 4699 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
1da177e4
LT		 4700};
4701
4702struct rpc_version nfs_version4 = {
4703 .number = 4,
e8c96f8c 4704 .nrprocs = ARRAY_SIZE(nfs4_procedures),
1da177e4
LT		 4705 .procs = nfs4_procedures
4706};
4707
4708/*
4709 * Local variables:
4710 * c-basic-offset: 8
4711 * End:
4712 */
Linux kernel - Deliverables
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