blob: a48a43c7511188fa187a6da7c5c420acdf161f98 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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>
Andy Adamson6c0195a2008-12-23 16:06:15 -050011 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070012 * 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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070041#include <linux/errno.h>
42#include <linux/string.h>
43#include <linux/in.h>
44#include <linux/pagemap.h>
45#include <linux/proc_fs.h>
46#include <linux/kdev_t.h>
47#include <linux/sunrpc/clnt.h>
Alexandros Batsakis2449ea22009-12-05 13:36:55 -050048#include <linux/sunrpc/msg_prot.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070049#include <linux/nfs.h>
50#include <linux/nfs4.h>
51#include <linux/nfs_fs.h>
52#include <linux/nfs_idmap.h>
Trond Myklebust4ce79712005-06-22 17:16:21 +000053#include "nfs4_fs.h"
Alexandros Batsakis4882ef72009-12-05 13:30:21 -050054#include "internal.h"
Andy Adamsonb1f69b72010-10-20 00:18:03 -040055#include "pnfs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
57#define NFSDBG_FACILITY NFSDBG_XDR
58
59/* Mapping from NFS error code to "errno" error code. */
60#define errno_NFSERR_IO EIO
61
David Howells0a8ea432006-08-22 20:06:08 -040062static int nfs4_stat_to_errno(int);
Linus Torvalds1da177e2005-04-16 15:20:36 -070063
64/* NFSv4 COMPOUND tags are only wanted for debugging purposes */
65#ifdef DEBUG
66#define NFS4_MAXTAGLEN 20
67#else
68#define NFS4_MAXTAGLEN 0
69#endif
70
Andy Adamson6c0195a2008-12-23 16:06:15 -050071/* lock,open owner id:
Trond Myklebust9f958ab2007-07-02 13:58:33 -040072 * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2)
Linus Torvalds1da177e2005-04-16 15:20:36 -070073 */
Trond Myklebust9f958ab2007-07-02 13:58:33 -040074#define open_owner_id_maxsz (1 + 4)
75#define lock_owner_id_maxsz (1 + 4)
Trond Myklebust9104a552007-07-17 21:52:42 -040076#define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
Linus Torvalds1da177e2005-04-16 15:20:36 -070077#define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
78#define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
79#define op_encode_hdr_maxsz (1)
80#define op_decode_hdr_maxsz (2)
Trond Myklebust9104a552007-07-17 21:52:42 -040081#define encode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
82#define decode_stateid_maxsz (XDR_QUADLEN(NFS4_STATEID_SIZE))
83#define encode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
84#define decode_verifier_maxsz (XDR_QUADLEN(NFS4_VERIFIER_SIZE))
Linus Torvalds1da177e2005-04-16 15:20:36 -070085#define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
86 (NFS4_FHSIZE >> 2))
87#define decode_putfh_maxsz (op_decode_hdr_maxsz)
88#define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
89#define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
90#define encode_getfh_maxsz (op_encode_hdr_maxsz)
91#define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
92 ((3+NFS4_FHSIZE) >> 2))
J. Bruce Fields96928202005-06-22 17:16:22 +000093#define nfs4_fattr_bitmap_maxsz 3
94#define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -070095#define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
96#define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
Trond Myklebustbd625ba2007-07-08 18:38:23 -040097#define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
98#define nfs4_group_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ))
J. Bruce Fields96928202005-06-22 17:16:22 +000099/* This is based on getfattr, which uses the most attributes: */
100#define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
Trond Myklebustbd625ba2007-07-08 18:38:23 -0400101 3 + 3 + 3 + nfs4_owner_maxsz + nfs4_group_maxsz))
J. Bruce Fields96928202005-06-22 17:16:22 +0000102#define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
103 nfs4_fattr_value_maxsz)
104#define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400105#define encode_attrs_maxsz (nfs4_fattr_bitmap_maxsz + \
106 1 + 2 + 1 + \
107 nfs4_owner_maxsz + \
108 nfs4_group_maxsz + \
109 4 + 4)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110#define encode_savefh_maxsz (op_encode_hdr_maxsz)
111#define decode_savefh_maxsz (op_decode_hdr_maxsz)
Trond Myklebust56ae19f2005-10-27 22:12:40 -0400112#define encode_restorefh_maxsz (op_encode_hdr_maxsz)
113#define decode_restorefh_maxsz (op_decode_hdr_maxsz)
Fred Isaman2f42b5d2008-03-13 15:26:30 +0200114#define encode_fsinfo_maxsz (encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11)
116#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
117#define decode_renew_maxsz (op_decode_hdr_maxsz)
118#define encode_setclientid_maxsz \
119 (op_encode_hdr_maxsz + \
Chuck Levercc38bac2007-12-10 14:56:54 -0500120 XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
121 XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
122 1 /* sc_prog */ + \
123 XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
124 XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
125 1) /* sc_cb_ident */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126#define decode_setclientid_maxsz \
127 (op_decode_hdr_maxsz + \
128 2 + \
129 1024) /* large value for CLID_INUSE */
130#define encode_setclientid_confirm_maxsz \
131 (op_encode_hdr_maxsz + \
132 3 + (NFS4_VERIFIER_SIZE >> 2))
133#define decode_setclientid_confirm_maxsz \
134 (op_decode_hdr_maxsz)
Trond Myklebuste6889622007-07-02 13:58:30 -0400135#define encode_lookup_maxsz (op_encode_hdr_maxsz + nfs4_name_maxsz)
136#define decode_lookup_maxsz (op_decode_hdr_maxsz)
Trond Myklebust2cebf822007-07-02 13:57:28 -0400137#define encode_share_access_maxsz \
138 (2)
Alexandros Batsakis4882ef72009-12-05 13:30:21 -0500139#define encode_createmode_maxsz (1 + encode_attrs_maxsz + encode_verifier_maxsz)
Trond Myklebust2cebf822007-07-02 13:57:28 -0400140#define encode_opentype_maxsz (1 + encode_createmode_maxsz)
141#define encode_claim_null_maxsz (1 + nfs4_name_maxsz)
142#define encode_open_maxsz (op_encode_hdr_maxsz + \
143 2 + encode_share_access_maxsz + 2 + \
144 open_owner_id_maxsz + \
145 encode_opentype_maxsz + \
146 encode_claim_null_maxsz)
147#define decode_ace_maxsz (3 + nfs4_owner_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400148#define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400149 decode_ace_maxsz)
150#define decode_change_info_maxsz (5)
151#define decode_open_maxsz (op_decode_hdr_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400152 decode_stateid_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400153 decode_change_info_maxsz + 1 + \
154 nfs4_fattr_bitmap_maxsz + \
155 decode_delegation_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400156#define encode_open_confirm_maxsz \
157 (op_encode_hdr_maxsz + \
158 encode_stateid_maxsz + 1)
159#define decode_open_confirm_maxsz \
160 (op_decode_hdr_maxsz + \
161 decode_stateid_maxsz)
162#define encode_open_downgrade_maxsz \
163 (op_encode_hdr_maxsz + \
164 encode_stateid_maxsz + 1 + \
165 encode_share_access_maxsz)
166#define decode_open_downgrade_maxsz \
167 (op_decode_hdr_maxsz + \
168 decode_stateid_maxsz)
169#define encode_close_maxsz (op_encode_hdr_maxsz + \
170 1 + encode_stateid_maxsz)
171#define decode_close_maxsz (op_decode_hdr_maxsz + \
172 decode_stateid_maxsz)
173#define encode_setattr_maxsz (op_encode_hdr_maxsz + \
174 encode_stateid_maxsz + \
175 encode_attrs_maxsz)
176#define decode_setattr_maxsz (op_decode_hdr_maxsz + \
177 nfs4_fattr_bitmap_maxsz)
178#define encode_read_maxsz (op_encode_hdr_maxsz + \
179 encode_stateid_maxsz + 3)
180#define decode_read_maxsz (op_decode_hdr_maxsz + 2)
181#define encode_readdir_maxsz (op_encode_hdr_maxsz + \
182 2 + encode_verifier_maxsz + 5)
183#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
184 decode_verifier_maxsz)
185#define encode_readlink_maxsz (op_encode_hdr_maxsz)
186#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
187#define encode_write_maxsz (op_encode_hdr_maxsz + \
188 encode_stateid_maxsz + 4)
189#define decode_write_maxsz (op_decode_hdr_maxsz + \
190 2 + decode_verifier_maxsz)
191#define encode_commit_maxsz (op_encode_hdr_maxsz + 3)
192#define decode_commit_maxsz (op_decode_hdr_maxsz + \
193 decode_verifier_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194#define encode_remove_maxsz (op_encode_hdr_maxsz + \
195 nfs4_name_maxsz)
Benny Halevy6ce18392009-04-01 09:22:06 -0400196#define decode_remove_maxsz (op_decode_hdr_maxsz + \
197 decode_change_info_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198#define encode_rename_maxsz (op_encode_hdr_maxsz + \
199 2 * nfs4_name_maxsz)
Benny Halevy6ce18392009-04-01 09:22:06 -0400200#define decode_rename_maxsz (op_decode_hdr_maxsz + \
201 decode_change_info_maxsz + \
202 decode_change_info_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203#define encode_link_maxsz (op_encode_hdr_maxsz + \
204 nfs4_name_maxsz)
Benny Halevy6ce18392009-04-01 09:22:06 -0400205#define decode_link_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz)
Trond Myklebustdaccbde2010-06-25 18:11:43 -0400206#define encode_lockowner_maxsz (7)
Trond Myklebust9104a552007-07-17 21:52:42 -0400207#define encode_lock_maxsz (op_encode_hdr_maxsz + \
208 7 + \
Trond Myklebustdaccbde2010-06-25 18:11:43 -0400209 1 + encode_stateid_maxsz + 1 + \
210 encode_lockowner_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400211#define decode_lock_denied_maxsz \
212 (8 + decode_lockowner_maxsz)
213#define decode_lock_maxsz (op_decode_hdr_maxsz + \
214 decode_lock_denied_maxsz)
Trond Myklebustdaccbde2010-06-25 18:11:43 -0400215#define encode_lockt_maxsz (op_encode_hdr_maxsz + 5 + \
216 encode_lockowner_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400217#define decode_lockt_maxsz (op_decode_hdr_maxsz + \
218 decode_lock_denied_maxsz)
219#define encode_locku_maxsz (op_encode_hdr_maxsz + 3 + \
220 encode_stateid_maxsz + \
221 4)
222#define decode_locku_maxsz (op_decode_hdr_maxsz + \
223 decode_stateid_maxsz)
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -0400224#define encode_release_lockowner_maxsz \
225 (op_encode_hdr_maxsz + \
226 encode_lockowner_maxsz)
227#define decode_release_lockowner_maxsz \
228 (op_decode_hdr_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400229#define encode_access_maxsz (op_encode_hdr_maxsz + 1)
230#define decode_access_maxsz (op_decode_hdr_maxsz + 2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231#define encode_symlink_maxsz (op_encode_hdr_maxsz + \
232 1 + nfs4_name_maxsz + \
Chuck Lever94a6d752006-08-22 20:06:23 -0400233 1 + \
J. Bruce Fields96928202005-06-22 17:16:22 +0000234 nfs4_fattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235#define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
236#define encode_create_maxsz (op_encode_hdr_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400237 1 + 2 + nfs4_name_maxsz + \
238 encode_attrs_maxsz)
Trond Myklebust2cebf822007-07-02 13:57:28 -0400239#define decode_create_maxsz (op_decode_hdr_maxsz + \
240 decode_change_info_maxsz + \
241 nfs4_fattr_bitmap_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400242#define encode_statfs_maxsz (encode_getattr_maxsz)
243#define decode_statfs_maxsz (decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244#define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
245#define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400246#define encode_getacl_maxsz (encode_getattr_maxsz)
247#define decode_getacl_maxsz (op_decode_hdr_maxsz + \
248 nfs4_fattr_bitmap_maxsz + 1)
249#define encode_setacl_maxsz (op_encode_hdr_maxsz + \
250 encode_stateid_maxsz + 3)
251#define decode_setacl_maxsz (decode_setattr_maxsz)
Trond Myklebuste6889622007-07-02 13:58:30 -0400252#define encode_fs_locations_maxsz \
253 (encode_getattr_maxsz)
254#define decode_fs_locations_maxsz \
255 (0)
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400256
257#if defined(CONFIG_NFS_V4_1)
Andy Adamsonfc931582009-04-01 09:22:31 -0400258#define NFS4_MAX_MACHINE_NAME_LEN (64)
259
Benny Halevy99fe60d2009-04-01 09:22:29 -0400260#define encode_exchange_id_maxsz (op_encode_hdr_maxsz + \
261 encode_verifier_maxsz + \
262 1 /* co_ownerid.len */ + \
263 XDR_QUADLEN(NFS4_EXCHANGE_ID_LEN) + \
264 1 /* flags */ + \
265 1 /* spa_how */ + \
266 0 /* SP4_NONE (for now) */ + \
267 1 /* zero implemetation id array */)
268#define decode_exchange_id_maxsz (op_decode_hdr_maxsz + \
269 2 /* eir_clientid */ + \
270 1 /* eir_sequenceid */ + \
271 1 /* eir_flags */ + \
272 1 /* spr_how */ + \
273 0 /* SP4_NONE (for now) */ + \
274 2 /* eir_server_owner.so_minor_id */ + \
275 /* eir_server_owner.so_major_id<> */ \
276 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
277 /* eir_server_scope<> */ \
278 XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + 1 + \
279 1 /* eir_server_impl_id array length */ + \
280 0 /* ignored eir_server_impl_id contents */)
Andy Adamsonfc931582009-04-01 09:22:31 -0400281#define encode_channel_attrs_maxsz (6 + 1 /* ca_rdma_ird.len (0) */)
282#define decode_channel_attrs_maxsz (6 + \
283 1 /* ca_rdma_ird.len */ + \
284 1 /* ca_rdma_ird */)
285#define encode_create_session_maxsz (op_encode_hdr_maxsz + \
286 2 /* csa_clientid */ + \
287 1 /* csa_sequence */ + \
288 1 /* csa_flags */ + \
289 encode_channel_attrs_maxsz + \
290 encode_channel_attrs_maxsz + \
291 1 /* csa_cb_program */ + \
292 1 /* csa_sec_parms.len (1) */ + \
293 1 /* cb_secflavor (AUTH_SYS) */ + \
294 1 /* stamp */ + \
295 1 /* machinename.len */ + \
296 XDR_QUADLEN(NFS4_MAX_MACHINE_NAME_LEN) + \
297 1 /* uid */ + \
298 1 /* gid */ + \
299 1 /* gids.len (0) */)
300#define decode_create_session_maxsz (op_decode_hdr_maxsz + \
301 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + \
302 1 /* csr_sequence */ + \
303 1 /* csr_flags */ + \
304 decode_channel_attrs_maxsz + \
305 decode_channel_attrs_maxsz)
Andy Adamson0f3e66c2009-04-01 09:22:34 -0400306#define encode_destroy_session_maxsz (op_encode_hdr_maxsz + 4)
307#define decode_destroy_session_maxsz (op_decode_hdr_maxsz)
Andy Adamsonfc01cea2009-04-01 09:22:36 -0400308#define encode_sequence_maxsz (op_encode_hdr_maxsz + \
309 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 4)
310#define decode_sequence_maxsz (op_decode_hdr_maxsz + \
311 XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5)
Ricardo Labiaga180197532009-12-05 16:08:40 -0500312#define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4)
313#define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4)
Andy Adamsonb1f69b72010-10-20 00:18:03 -0400314#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \
315 XDR_QUADLEN(NFS4_DEVICEID4_SIZE))
316#define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \
317 1 /* layout type */ + \
318 1 /* opaque devaddr4 length */ + \
319 /* devaddr4 payload is read into page */ \
320 1 /* notification bitmap length */ + \
321 1 /* notification bitmap */)
322#define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \
323 encode_stateid_maxsz)
324#define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \
325 decode_stateid_maxsz + \
326 XDR_QUADLEN(PNFS_LAYOUT_MAXSIZE))
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400327#else /* CONFIG_NFS_V4_1 */
328#define encode_sequence_maxsz 0
329#define decode_sequence_maxsz 0
330#endif /* CONFIG_NFS_V4_1 */
331
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332#define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
333#define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
334#define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400335 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400337 encode_read_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338#define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400339 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400341 decode_read_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342#define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400343 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400345 encode_readlink_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346#define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400347 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400349 decode_readlink_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350#define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400351 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400353 encode_readdir_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354#define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400355 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400357 decode_readdir_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358#define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400359 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400361 encode_write_maxsz + \
Trond Myklebust4f9838c2005-10-27 22:12:44 -0400362 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363#define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400364 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400366 decode_write_maxsz + \
Trond Myklebust4f9838c2005-10-27 22:12:44 -0400367 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368#define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400369 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400371 encode_commit_maxsz + \
Trond Myklebust4f9838c2005-10-27 22:12:44 -0400372 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373#define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400374 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400376 decode_commit_maxsz + \
Trond Myklebust4f9838c2005-10-27 22:12:44 -0400377 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378#define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400379 encode_sequence_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400380 encode_putfh_maxsz + \
381 encode_savefh_maxsz + \
382 encode_open_maxsz + \
383 encode_getfh_maxsz + \
384 encode_getattr_maxsz + \
385 encode_restorefh_maxsz + \
386 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387#define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400388 decode_sequence_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400389 decode_putfh_maxsz + \
390 decode_savefh_maxsz + \
391 decode_open_maxsz + \
392 decode_getfh_maxsz + \
393 decode_getattr_maxsz + \
394 decode_restorefh_maxsz + \
395 decode_getattr_maxsz)
Trond Myklebust9104a552007-07-17 21:52:42 -0400396#define NFS4_enc_open_confirm_sz \
397 (compound_encode_hdr_maxsz + \
398 encode_putfh_maxsz + \
399 encode_open_confirm_maxsz)
400#define NFS4_dec_open_confirm_sz \
401 (compound_decode_hdr_maxsz + \
402 decode_putfh_maxsz + \
403 decode_open_confirm_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404#define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400405 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 encode_putfh_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400407 encode_open_maxsz + \
408 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409#define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400410 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 decode_putfh_maxsz + \
Trond Myklebust2cebf822007-07-02 13:57:28 -0400412 decode_open_maxsz + \
413 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414#define NFS4_enc_open_downgrade_sz \
415 (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400416 encode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400417 encode_putfh_maxsz + \
418 encode_open_downgrade_maxsz + \
419 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420#define NFS4_dec_open_downgrade_sz \
421 (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400422 decode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400423 decode_putfh_maxsz + \
424 decode_open_downgrade_maxsz + \
425 decode_getattr_maxsz)
426#define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400427 encode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400428 encode_putfh_maxsz + \
429 encode_close_maxsz + \
430 encode_getattr_maxsz)
431#define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400432 decode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400433 decode_putfh_maxsz + \
434 decode_close_maxsz + \
435 decode_getattr_maxsz)
436#define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400437 encode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400438 encode_putfh_maxsz + \
439 encode_setattr_maxsz + \
440 encode_getattr_maxsz)
441#define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400442 decode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400443 decode_putfh_maxsz + \
444 decode_setattr_maxsz + \
445 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446#define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400447 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448 encode_putfh_maxsz + \
449 encode_fsinfo_maxsz)
450#define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400451 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452 decode_putfh_maxsz + \
453 decode_fsinfo_maxsz)
454#define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
455 encode_renew_maxsz)
456#define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
457 decode_renew_maxsz)
458#define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
459 encode_setclientid_maxsz)
460#define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
461 decode_setclientid_maxsz)
462#define NFS4_enc_setclientid_confirm_sz \
463 (compound_encode_hdr_maxsz + \
464 encode_setclientid_confirm_maxsz + \
465 encode_putrootfh_maxsz + \
466 encode_fsinfo_maxsz)
467#define NFS4_dec_setclientid_confirm_sz \
468 (compound_decode_hdr_maxsz + \
469 decode_setclientid_confirm_maxsz + \
470 decode_putrootfh_maxsz + \
471 decode_fsinfo_maxsz)
472#define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400473 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400475 encode_lock_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476#define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400477 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400479 decode_lock_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480#define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400481 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700482 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400483 encode_lockt_maxsz)
484#define NFS4_dec_lockt_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400485 decode_sequence_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400486 decode_putfh_maxsz + \
487 decode_lockt_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488#define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400489 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400491 encode_locku_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492#define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400493 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400495 decode_locku_maxsz)
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -0400496#define NFS4_enc_release_lockowner_sz \
497 (compound_encode_hdr_maxsz + \
498 encode_lockowner_maxsz)
499#define NFS4_dec_release_lockowner_sz \
500 (compound_decode_hdr_maxsz + \
501 decode_lockowner_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502#define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400503 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504 encode_putfh_maxsz + \
Trond Myklebust76b32992007-08-10 17:45:11 -0400505 encode_access_maxsz + \
506 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507#define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400508 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509 decode_putfh_maxsz + \
Trond Myklebust76b32992007-08-10 17:45:11 -0400510 decode_access_maxsz + \
511 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512#define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400513 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514 encode_putfh_maxsz + \
515 encode_getattr_maxsz)
516#define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400517 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 decode_putfh_maxsz + \
519 decode_getattr_maxsz)
520#define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400521 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522 encode_putfh_maxsz + \
523 encode_lookup_maxsz + \
524 encode_getattr_maxsz + \
525 encode_getfh_maxsz)
526#define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400527 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528 decode_putfh_maxsz + \
Trond Myklebuste6889622007-07-02 13:58:30 -0400529 decode_lookup_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530 decode_getattr_maxsz + \
531 decode_getfh_maxsz)
532#define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400533 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534 encode_putrootfh_maxsz + \
535 encode_getattr_maxsz + \
536 encode_getfh_maxsz)
537#define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400538 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539 decode_putrootfh_maxsz + \
540 decode_getattr_maxsz + \
541 decode_getfh_maxsz)
542#define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400543 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544 encode_putfh_maxsz + \
Trond Myklebust16e42952005-10-27 22:12:44 -0400545 encode_remove_maxsz + \
546 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547#define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400548 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549 decode_putfh_maxsz + \
Benny Halevy6ce18392009-04-01 09:22:06 -0400550 decode_remove_maxsz + \
Trond Myklebust16e42952005-10-27 22:12:44 -0400551 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552#define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400553 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554 encode_putfh_maxsz + \
555 encode_savefh_maxsz + \
556 encode_putfh_maxsz + \
Trond Myklebust6caf2c82005-10-27 22:12:43 -0400557 encode_rename_maxsz + \
558 encode_getattr_maxsz + \
559 encode_restorefh_maxsz + \
560 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561#define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400562 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563 decode_putfh_maxsz + \
564 decode_savefh_maxsz + \
565 decode_putfh_maxsz + \
Trond Myklebust6caf2c82005-10-27 22:12:43 -0400566 decode_rename_maxsz + \
567 decode_getattr_maxsz + \
568 decode_restorefh_maxsz + \
569 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570#define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400571 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572 encode_putfh_maxsz + \
573 encode_savefh_maxsz + \
574 encode_putfh_maxsz + \
Trond Myklebust91ba2ee2005-10-27 22:12:42 -0400575 encode_link_maxsz + \
576 decode_getattr_maxsz + \
577 encode_restorefh_maxsz + \
578 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579#define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400580 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581 decode_putfh_maxsz + \
582 decode_savefh_maxsz + \
583 decode_putfh_maxsz + \
Trond Myklebust91ba2ee2005-10-27 22:12:42 -0400584 decode_link_maxsz + \
585 decode_getattr_maxsz + \
586 decode_restorefh_maxsz + \
587 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588#define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400589 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700590 encode_putfh_maxsz + \
591 encode_symlink_maxsz + \
592 encode_getattr_maxsz + \
593 encode_getfh_maxsz)
594#define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400595 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596 decode_putfh_maxsz + \
597 decode_symlink_maxsz + \
598 decode_getattr_maxsz + \
599 decode_getfh_maxsz)
600#define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400601 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602 encode_putfh_maxsz + \
Trond Myklebust56ae19f2005-10-27 22:12:40 -0400603 encode_savefh_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700604 encode_create_maxsz + \
Trond Myklebust56ae19f2005-10-27 22:12:40 -0400605 encode_getfh_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606 encode_getattr_maxsz + \
Trond Myklebust56ae19f2005-10-27 22:12:40 -0400607 encode_restorefh_maxsz + \
608 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609#define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400610 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611 decode_putfh_maxsz + \
Trond Myklebust56ae19f2005-10-27 22:12:40 -0400612 decode_savefh_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613 decode_create_maxsz + \
Trond Myklebust56ae19f2005-10-27 22:12:40 -0400614 decode_getfh_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615 decode_getattr_maxsz + \
Trond Myklebust56ae19f2005-10-27 22:12:40 -0400616 decode_restorefh_maxsz + \
617 decode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618#define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400619 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620 encode_putfh_maxsz + \
621 encode_getattr_maxsz)
622#define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400623 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624 decode_putfh_maxsz + \
625 decode_getattr_maxsz)
626#define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400627 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400629 encode_statfs_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630#define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400631 decode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400633 decode_statfs_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634#define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400635 encode_sequence_maxsz + \
Trond Myklebustab91f262007-02-02 14:47:17 -0800636 encode_putfh_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700637 encode_getattr_maxsz)
638#define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400639 decode_sequence_maxsz + \
Trond Myklebustab91f262007-02-02 14:47:17 -0800640 decode_putfh_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700641 decode_getattr_maxsz)
642#define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400643 encode_sequence_maxsz + \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644 encode_putfh_maxsz + \
Trond Myklebustfa178f22006-01-03 09:55:38 +0100645 encode_delegreturn_maxsz + \
646 encode_getattr_maxsz)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700647#define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400648 decode_sequence_maxsz + \
Trond Myklebustfa178f22006-01-03 09:55:38 +0100649 decode_delegreturn_maxsz + \
650 decode_getattr_maxsz)
J. Bruce Fields029d1052005-06-22 17:16:22 +0000651#define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400652 encode_sequence_maxsz + \
J. Bruce Fields029d1052005-06-22 17:16:22 +0000653 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400654 encode_getacl_maxsz)
J. Bruce Fields029d1052005-06-22 17:16:22 +0000655#define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400656 decode_sequence_maxsz + \
J. Bruce Fields029d1052005-06-22 17:16:22 +0000657 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400658 decode_getacl_maxsz)
J. Bruce Fields23ec6962005-06-22 17:16:22 +0000659#define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400660 encode_sequence_maxsz + \
J. Bruce Fields23ec6962005-06-22 17:16:22 +0000661 encode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400662 encode_setacl_maxsz)
J. Bruce Fields23ec6962005-06-22 17:16:22 +0000663#define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400664 decode_sequence_maxsz + \
J. Bruce Fields23ec6962005-06-22 17:16:22 +0000665 decode_putfh_maxsz + \
Trond Myklebust9104a552007-07-17 21:52:42 -0400666 decode_setacl_maxsz)
Trond Myklebust683b57b2006-06-09 09:34:22 -0400667#define NFS4_enc_fs_locations_sz \
668 (compound_encode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400669 encode_sequence_maxsz + \
Trond Myklebust683b57b2006-06-09 09:34:22 -0400670 encode_putfh_maxsz + \
Trond Myklebuste6889622007-07-02 13:58:30 -0400671 encode_lookup_maxsz + \
672 encode_fs_locations_maxsz)
Trond Myklebust683b57b2006-06-09 09:34:22 -0400673#define NFS4_dec_fs_locations_sz \
674 (compound_decode_hdr_maxsz + \
Andy Adamson9b7b9fc2009-04-01 09:22:11 -0400675 decode_sequence_maxsz + \
Trond Myklebust683b57b2006-06-09 09:34:22 -0400676 decode_putfh_maxsz + \
Trond Myklebuste6889622007-07-02 13:58:30 -0400677 decode_lookup_maxsz + \
678 decode_fs_locations_maxsz)
Benny Halevy99fe60d2009-04-01 09:22:29 -0400679#if defined(CONFIG_NFS_V4_1)
680#define NFS4_enc_exchange_id_sz \
681 (compound_encode_hdr_maxsz + \
682 encode_exchange_id_maxsz)
683#define NFS4_dec_exchange_id_sz \
684 (compound_decode_hdr_maxsz + \
685 decode_exchange_id_maxsz)
Andy Adamsonfc931582009-04-01 09:22:31 -0400686#define NFS4_enc_create_session_sz \
687 (compound_encode_hdr_maxsz + \
688 encode_create_session_maxsz)
689#define NFS4_dec_create_session_sz \
690 (compound_decode_hdr_maxsz + \
691 decode_create_session_maxsz)
Andy Adamson0f3e66c2009-04-01 09:22:34 -0400692#define NFS4_enc_destroy_session_sz (compound_encode_hdr_maxsz + \
693 encode_destroy_session_maxsz)
694#define NFS4_dec_destroy_session_sz (compound_decode_hdr_maxsz + \
695 decode_destroy_session_maxsz)
Andy Adamsonfc01cea2009-04-01 09:22:36 -0400696#define NFS4_enc_sequence_sz \
697 (compound_decode_hdr_maxsz + \
698 encode_sequence_maxsz)
699#define NFS4_dec_sequence_sz \
700 (compound_decode_hdr_maxsz + \
701 decode_sequence_maxsz)
Andy Adamson2050f0c2009-04-01 09:22:30 -0400702#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
703 encode_sequence_maxsz + \
704 encode_putrootfh_maxsz + \
705 encode_fsinfo_maxsz)
706#define NFS4_dec_get_lease_time_sz (compound_decode_hdr_maxsz + \
707 decode_sequence_maxsz + \
708 decode_putrootfh_maxsz + \
709 decode_fsinfo_maxsz)
Ricardo Labiaga180197532009-12-05 16:08:40 -0500710#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
711 encode_sequence_maxsz + \
712 encode_reclaim_complete_maxsz)
713#define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \
714 decode_sequence_maxsz + \
715 decode_reclaim_complete_maxsz)
Andy Adamsonb1f69b72010-10-20 00:18:03 -0400716#define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \
717 encode_sequence_maxsz +\
718 encode_getdeviceinfo_maxsz)
719#define NFS4_dec_getdeviceinfo_sz (compound_decode_hdr_maxsz + \
720 decode_sequence_maxsz + \
721 decode_getdeviceinfo_maxsz)
722#define NFS4_enc_layoutget_sz (compound_encode_hdr_maxsz + \
723 encode_sequence_maxsz + \
724 encode_putfh_maxsz + \
725 encode_layoutget_maxsz)
726#define NFS4_dec_layoutget_sz (compound_decode_hdr_maxsz + \
727 decode_sequence_maxsz + \
728 decode_putfh_maxsz + \
729 decode_layoutget_maxsz)
Alexandros Batsakis2449ea22009-12-05 13:36:55 -0500730
731const u32 nfs41_maxwrite_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
732 compound_encode_hdr_maxsz +
733 encode_sequence_maxsz +
734 encode_putfh_maxsz +
735 encode_getattr_maxsz) *
736 XDR_UNIT);
737
738const u32 nfs41_maxread_overhead = ((RPC_MAX_HEADER_WITH_AUTH +
739 compound_decode_hdr_maxsz +
740 decode_sequence_maxsz +
741 decode_putfh_maxsz) *
742 XDR_UNIT);
Benny Halevy99fe60d2009-04-01 09:22:29 -0400743#endif /* CONFIG_NFS_V4_1 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744
Trond Myklebustbca79472009-03-11 14:10:26 -0400745static const umode_t nfs_type2fmt[] = {
746 [NF4BAD] = 0,
747 [NF4REG] = S_IFREG,
748 [NF4DIR] = S_IFDIR,
749 [NF4BLK] = S_IFBLK,
750 [NF4CHR] = S_IFCHR,
751 [NF4LNK] = S_IFLNK,
752 [NF4SOCK] = S_IFSOCK,
753 [NF4FIFO] = S_IFIFO,
754 [NF4ATTRDIR] = 0,
755 [NF4NAMEDATTR] = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756};
757
758struct compound_hdr {
759 int32_t status;
760 uint32_t nops;
Andy Adamsond0179312008-12-23 16:06:17 -0500761 __be32 * nops_p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762 uint32_t taglen;
763 char * tag;
Benny Halevy0c4e8c12009-04-01 09:22:07 -0400764 uint32_t replen; /* expected reply words */
Benny Halevy66cc0422009-04-01 09:22:10 -0400765 u32 minorversion;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766};
767
Benny Halevy13c65ce2009-08-14 17:19:25 +0300768static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes)
769{
770 __be32 *p = xdr_reserve_space(xdr, nbytes);
771 BUG_ON(!p);
772 return p;
773}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774
775static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
776{
Al Viro8687b632006-10-19 23:28:48 -0700777 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778
779 p = xdr_reserve_space(xdr, 4 + len);
780 BUG_ON(p == NULL);
781 xdr_encode_opaque(p, str, len);
782}
783
Benny Halevy0c4e8c12009-04-01 09:22:07 -0400784static void encode_compound_hdr(struct xdr_stream *xdr,
785 struct rpc_rqst *req,
786 struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700787{
Al Viro8687b632006-10-19 23:28:48 -0700788 __be32 *p;
Trond Myklebusta17c2152010-07-31 14:29:08 -0400789 struct rpc_auth *auth = req->rq_cred->cr_auth;
Benny Halevy0c4e8c12009-04-01 09:22:07 -0400790
791 /* initialize running count of expected bytes in reply.
792 * NOTE: the replied tag SHOULD be the same is the one sent,
793 * but this is not required as a MUST for the server to do so. */
794 hdr->replen = RPC_REPHDRSIZE + auth->au_rslack + 3 + hdr->taglen;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700795
796 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
797 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
Benny Halevy811652b2009-08-14 17:19:34 +0300798 p = reserve_space(xdr, 4 + hdr->taglen + 8);
799 p = xdr_encode_opaque(p, hdr->tag, hdr->taglen);
Benny Halevye75bc1c2009-08-14 17:18:54 +0300800 *p++ = cpu_to_be32(hdr->minorversion);
Andy Adamsond0179312008-12-23 16:06:17 -0500801 hdr->nops_p = p;
Benny Halevy34558512009-08-14 17:19:30 +0300802 *p = cpu_to_be32(hdr->nops);
Andy Adamsond0179312008-12-23 16:06:17 -0500803}
804
805static void encode_nops(struct compound_hdr *hdr)
806{
Andy Adamsonfc931582009-04-01 09:22:31 -0400807 BUG_ON(hdr->nops > NFS4_MAX_OPS);
Andy Adamsond0179312008-12-23 16:06:17 -0500808 *hdr->nops_p = htonl(hdr->nops);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809}
810
811static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
812{
Al Viro8687b632006-10-19 23:28:48 -0700813 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814
815 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
816 BUG_ON(p == NULL);
817 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
818}
819
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -0500820static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700821{
822 char owner_name[IDMAP_NAMESZ];
823 char owner_group[IDMAP_NAMESZ];
824 int owner_namelen = 0;
825 int owner_grouplen = 0;
Al Viro8687b632006-10-19 23:28:48 -0700826 __be32 *p;
827 __be32 *q;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700828 int len;
829 uint32_t bmval0 = 0;
830 uint32_t bmval1 = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831
832 /*
833 * We reserve enough space to write the entire attribute buffer at once.
834 * In the worst-case, this would be
835 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
836 * = 36 bytes, plus any contribution from variable-length fields
J. Bruce Fields23ec6962005-06-22 17:16:22 +0000837 * such as owner/group.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700838 */
839 len = 16;
840
841 /* Sigh */
842 if (iap->ia_valid & ATTR_SIZE)
843 len += 8;
844 if (iap->ia_valid & ATTR_MODE)
845 len += 4;
846 if (iap->ia_valid & ATTR_UID) {
Bryan Schumaker955a8572010-09-29 15:41:49 -0400847 owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name, IDMAP_NAMESZ);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700848 if (owner_namelen < 0) {
Chuck Leverfe82a182007-09-11 18:01:10 -0400849 dprintk("nfs: couldn't resolve uid %d to string\n",
850 iap->ia_uid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851 /* XXX */
852 strcpy(owner_name, "nobody");
853 owner_namelen = sizeof("nobody") - 1;
854 /* goto out; */
855 }
856 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
857 }
858 if (iap->ia_valid & ATTR_GID) {
Bryan Schumaker955a8572010-09-29 15:41:49 -0400859 owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group, IDMAP_NAMESZ);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700860 if (owner_grouplen < 0) {
Chuck Leverfe82a182007-09-11 18:01:10 -0400861 dprintk("nfs: couldn't resolve gid %d to string\n",
862 iap->ia_gid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700863 strcpy(owner_group, "nobody");
864 owner_grouplen = sizeof("nobody") - 1;
865 /* goto out; */
866 }
867 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
868 }
869 if (iap->ia_valid & ATTR_ATIME_SET)
870 len += 16;
871 else if (iap->ia_valid & ATTR_ATIME)
872 len += 4;
873 if (iap->ia_valid & ATTR_MTIME_SET)
874 len += 16;
875 else if (iap->ia_valid & ATTR_MTIME)
876 len += 4;
Benny Halevy13c65ce2009-08-14 17:19:25 +0300877 p = reserve_space(xdr, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700878
879 /*
880 * We write the bitmap length now, but leave the bitmap and the attribute
881 * buffer length to be backfilled at the end of this routine.
882 */
Benny Halevye75bc1c2009-08-14 17:18:54 +0300883 *p++ = cpu_to_be32(2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884 q = p;
885 p += 3;
886
887 if (iap->ia_valid & ATTR_SIZE) {
888 bmval0 |= FATTR4_WORD0_SIZE;
Benny Halevyb95be5a2009-08-14 17:19:01 +0300889 p = xdr_encode_hyper(p, iap->ia_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890 }
891 if (iap->ia_valid & ATTR_MODE) {
892 bmval1 |= FATTR4_WORD1_MODE;
Benny Halevye75bc1c2009-08-14 17:18:54 +0300893 *p++ = cpu_to_be32(iap->ia_mode & S_IALLUGO);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700894 }
895 if (iap->ia_valid & ATTR_UID) {
896 bmval1 |= FATTR4_WORD1_OWNER;
Benny Halevy811652b2009-08-14 17:19:34 +0300897 p = xdr_encode_opaque(p, owner_name, owner_namelen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898 }
899 if (iap->ia_valid & ATTR_GID) {
900 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
Benny Halevy811652b2009-08-14 17:19:34 +0300901 p = xdr_encode_opaque(p, owner_group, owner_grouplen);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902 }
903 if (iap->ia_valid & ATTR_ATIME_SET) {
904 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
Benny Halevye75bc1c2009-08-14 17:18:54 +0300905 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
906 *p++ = cpu_to_be32(0);
Trond Myklebustd3f6baa2010-06-22 08:52:39 -0400907 *p++ = cpu_to_be32(iap->ia_atime.tv_sec);
908 *p++ = cpu_to_be32(iap->ia_atime.tv_nsec);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700909 }
910 else if (iap->ia_valid & ATTR_ATIME) {
911 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
Benny Halevye75bc1c2009-08-14 17:18:54 +0300912 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913 }
914 if (iap->ia_valid & ATTR_MTIME_SET) {
915 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
Benny Halevye75bc1c2009-08-14 17:18:54 +0300916 *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME);
917 *p++ = cpu_to_be32(0);
918 *p++ = cpu_to_be32(iap->ia_mtime.tv_sec);
919 *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920 }
921 else if (iap->ia_valid & ATTR_MTIME) {
922 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
Benny Halevye75bc1c2009-08-14 17:18:54 +0300923 *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700924 }
Andy Adamson6c0195a2008-12-23 16:06:15 -0500925
Linus Torvalds1da177e2005-04-16 15:20:36 -0700926 /*
927 * Now we backfill the bitmap and the attribute buffer length.
928 */
929 if (len != ((char *)p - (char *)q) + 4) {
Chuck Leverfe82a182007-09-11 18:01:10 -0400930 printk(KERN_ERR "nfs: Attr length error, %u != %Zu\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700931 len, ((char *)p - (char *)q) + 4);
932 BUG();
933 }
934 len = (char *)p - (char *)q - 12;
935 *q++ = htonl(bmval0);
936 *q++ = htonl(bmval1);
Benny Halevy34558512009-08-14 17:19:30 +0300937 *q = htonl(len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700938
Linus Torvalds1da177e2005-04-16 15:20:36 -0700939/* out: */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700940}
941
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -0500942static void encode_access(struct xdr_stream *xdr, u32 access, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943{
Al Viro8687b632006-10-19 23:28:48 -0700944 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700945
Benny Halevy13c65ce2009-08-14 17:19:25 +0300946 p = reserve_space(xdr, 8);
Benny Halevye75bc1c2009-08-14 17:18:54 +0300947 *p++ = cpu_to_be32(OP_ACCESS);
Benny Halevy34558512009-08-14 17:19:30 +0300948 *p = cpu_to_be32(access);
Andy Adamsond0179312008-12-23 16:06:17 -0500949 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -0400950 hdr->replen += decode_access_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700951}
952
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -0500953static void encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700954{
Al Viro8687b632006-10-19 23:28:48 -0700955 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956
Benny Halevy13c65ce2009-08-14 17:19:25 +0300957 p = reserve_space(xdr, 8+NFS4_STATEID_SIZE);
Benny Halevye75bc1c2009-08-14 17:18:54 +0300958 *p++ = cpu_to_be32(OP_CLOSE);
959 *p++ = cpu_to_be32(arg->seqid->sequence->counter);
Benny Halevy34558512009-08-14 17:19:30 +0300960 xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
Andy Adamsond0179312008-12-23 16:06:17 -0500961 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -0400962 hdr->replen += decode_close_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700963}
964
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -0500965static void encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700966{
Al Viro8687b632006-10-19 23:28:48 -0700967 __be32 *p;
Andy Adamson6c0195a2008-12-23 16:06:15 -0500968
Benny Halevy13c65ce2009-08-14 17:19:25 +0300969 p = reserve_space(xdr, 16);
Benny Halevye75bc1c2009-08-14 17:18:54 +0300970 *p++ = cpu_to_be32(OP_COMMIT);
Benny Halevyb95be5a2009-08-14 17:19:01 +0300971 p = xdr_encode_hyper(p, args->offset);
Benny Halevy34558512009-08-14 17:19:30 +0300972 *p = cpu_to_be32(args->count);
Andy Adamsond0179312008-12-23 16:06:17 -0500973 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -0400974 hdr->replen += decode_commit_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700975}
976
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -0500977static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700978{
Al Viro8687b632006-10-19 23:28:48 -0700979 __be32 *p;
Andy Adamson6c0195a2008-12-23 16:06:15 -0500980
Benny Halevy13c65ce2009-08-14 17:19:25 +0300981 p = reserve_space(xdr, 8);
Benny Halevye75bc1c2009-08-14 17:18:54 +0300982 *p++ = cpu_to_be32(OP_CREATE);
Benny Halevy34558512009-08-14 17:19:30 +0300983 *p = cpu_to_be32(create->ftype);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700984
985 switch (create->ftype) {
986 case NF4LNK:
Benny Halevy13c65ce2009-08-14 17:19:25 +0300987 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +0300988 *p = cpu_to_be32(create->u.symlink.len);
Chuck Lever94a6d752006-08-22 20:06:23 -0400989 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700990 break;
991
992 case NF4BLK: case NF4CHR:
Benny Halevy13c65ce2009-08-14 17:19:25 +0300993 p = reserve_space(xdr, 8);
Benny Halevye75bc1c2009-08-14 17:18:54 +0300994 *p++ = cpu_to_be32(create->u.device.specdata1);
Benny Halevy34558512009-08-14 17:19:30 +0300995 *p = cpu_to_be32(create->u.device.specdata2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700996 break;
997
998 default:
999 break;
1000 }
1001
Benny Halevy811652b2009-08-14 17:19:34 +03001002 encode_string(xdr, create->name->len, create->name->name);
Andy Adamsond0179312008-12-23 16:06:17 -05001003 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001004 hdr->replen += decode_create_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001005
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001006 encode_attrs(xdr, create->attrs, create->server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001007}
1008
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001009static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010{
Andy Adamson05d564f2008-12-23 16:06:15 -05001011 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001012
Benny Halevy13c65ce2009-08-14 17:19:25 +03001013 p = reserve_space(xdr, 12);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001014 *p++ = cpu_to_be32(OP_GETATTR);
1015 *p++ = cpu_to_be32(1);
Benny Halevy34558512009-08-14 17:19:30 +03001016 *p = cpu_to_be32(bitmap);
Andy Adamsond0179312008-12-23 16:06:17 -05001017 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001018 hdr->replen += decode_getattr_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001019}
1020
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001021static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001022{
Andy Adamson05d564f2008-12-23 16:06:15 -05001023 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001024
Benny Halevy13c65ce2009-08-14 17:19:25 +03001025 p = reserve_space(xdr, 16);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001026 *p++ = cpu_to_be32(OP_GETATTR);
1027 *p++ = cpu_to_be32(2);
1028 *p++ = cpu_to_be32(bm0);
Benny Halevy34558512009-08-14 17:19:30 +03001029 *p = cpu_to_be32(bm1);
Andy Adamsond0179312008-12-23 16:06:17 -05001030 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001031 hdr->replen += decode_getattr_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001032}
1033
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001034static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001035{
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001036 encode_getattr_two(xdr, bitmask[0] & nfs4_fattr_bitmap[0],
1037 bitmask[1] & nfs4_fattr_bitmap[1], hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001038}
1039
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001040static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001041{
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001042 encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
1043 bitmask[1] & nfs4_fsinfo_bitmap[1], hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044}
1045
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001046static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr)
Manoj Naik830b8e32006-06-09 09:34:25 -04001047{
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001048 encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0],
1049 bitmask[1] & nfs4_fs_locations_bitmap[1], hdr);
Manoj Naik830b8e32006-06-09 09:34:25 -04001050}
1051
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001052static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001053{
Al Viro8687b632006-10-19 23:28:48 -07001054 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001055
Benny Halevy13c65ce2009-08-14 17:19:25 +03001056 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001057 *p = cpu_to_be32(OP_GETFH);
Andy Adamsond0179312008-12-23 16:06:17 -05001058 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001059 hdr->replen += decode_getfh_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001060}
1061
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001062static void encode_link(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001063{
Al Viro8687b632006-10-19 23:28:48 -07001064 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001065
Benny Halevy13c65ce2009-08-14 17:19:25 +03001066 p = reserve_space(xdr, 8 + name->len);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001067 *p++ = cpu_to_be32(OP_LINK);
Benny Halevy811652b2009-08-14 17:19:34 +03001068 xdr_encode_opaque(p, name->name, name->len);
Andy Adamsond0179312008-12-23 16:06:17 -05001069 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001070 hdr->replen += decode_link_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001071}
1072
Trond Myklebust911d1aa2006-01-03 09:55:16 +01001073static inline int nfs4_lock_type(struct file_lock *fl, int block)
1074{
1075 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
1076 return block ? NFS4_READW_LT : NFS4_READ_LT;
1077 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
1078}
1079
1080static inline uint64_t nfs4_lock_length(struct file_lock *fl)
1081{
1082 if (fl->fl_end == OFFSET_MAX)
1083 return ~(uint64_t)0;
1084 return fl->fl_end - fl->fl_start + 1;
1085}
1086
Trond Myklebustdaccbde2010-06-25 18:11:43 -04001087static void encode_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner)
1088{
1089 __be32 *p;
1090
1091 p = reserve_space(xdr, 28);
1092 p = xdr_encode_hyper(p, lowner->clientid);
1093 *p++ = cpu_to_be32(16);
1094 p = xdr_encode_opaque_fixed(p, "lock id:", 8);
1095 xdr_encode_hyper(p, lowner->id);
1096}
1097
Linus Torvalds1da177e2005-04-16 15:20:36 -07001098/*
1099 * opcode,type,reclaim,offset,length,new_lock_owner = 32
1100 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
1101 */
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001102static void encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001103{
Al Viro8687b632006-10-19 23:28:48 -07001104 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001105
Benny Halevy13c65ce2009-08-14 17:19:25 +03001106 p = reserve_space(xdr, 32);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001107 *p++ = cpu_to_be32(OP_LOCK);
1108 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, args->block));
1109 *p++ = cpu_to_be32(args->reclaim);
Benny Halevyb95be5a2009-08-14 17:19:01 +03001110 p = xdr_encode_hyper(p, args->fl->fl_start);
1111 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
Benny Halevy34558512009-08-14 17:19:30 +03001112 *p = cpu_to_be32(args->new_lock_owner);
Trond Myklebust911d1aa2006-01-03 09:55:16 +01001113 if (args->new_lock_owner){
Trond Myklebustdaccbde2010-06-25 18:11:43 -04001114 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001115 *p++ = cpu_to_be32(args->open_seqid->sequence->counter);
Benny Halevy93f0cf22009-08-14 17:19:06 +03001116 p = xdr_encode_opaque_fixed(p, args->open_stateid->data, NFS4_STATEID_SIZE);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001117 *p++ = cpu_to_be32(args->lock_seqid->sequence->counter);
Trond Myklebustdaccbde2010-06-25 18:11:43 -04001118 encode_lockowner(xdr, &args->lock_owner);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001119 }
1120 else {
Benny Halevy13c65ce2009-08-14 17:19:25 +03001121 p = reserve_space(xdr, NFS4_STATEID_SIZE+4);
Benny Halevy93f0cf22009-08-14 17:19:06 +03001122 p = xdr_encode_opaque_fixed(p, args->lock_stateid->data, NFS4_STATEID_SIZE);
Benny Halevy34558512009-08-14 17:19:30 +03001123 *p = cpu_to_be32(args->lock_seqid->sequence->counter);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001124 }
Andy Adamsond0179312008-12-23 16:06:17 -05001125 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001126 hdr->replen += decode_lock_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001127}
1128
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001129static void encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001130{
Al Viro8687b632006-10-19 23:28:48 -07001131 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001132
Trond Myklebustdaccbde2010-06-25 18:11:43 -04001133 p = reserve_space(xdr, 24);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001134 *p++ = cpu_to_be32(OP_LOCKT);
1135 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
Benny Halevyb95be5a2009-08-14 17:19:01 +03001136 p = xdr_encode_hyper(p, args->fl->fl_start);
1137 p = xdr_encode_hyper(p, nfs4_lock_length(args->fl));
Trond Myklebustdaccbde2010-06-25 18:11:43 -04001138 encode_lockowner(xdr, &args->lock_owner);
Andy Adamsond0179312008-12-23 16:06:17 -05001139 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001140 hdr->replen += decode_lockt_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001141}
1142
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001143static void encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001144{
Al Viro8687b632006-10-19 23:28:48 -07001145 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001146
Benny Halevy13c65ce2009-08-14 17:19:25 +03001147 p = reserve_space(xdr, 12+NFS4_STATEID_SIZE+16);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001148 *p++ = cpu_to_be32(OP_LOCKU);
1149 *p++ = cpu_to_be32(nfs4_lock_type(args->fl, 0));
1150 *p++ = cpu_to_be32(args->seqid->sequence->counter);
Benny Halevy93f0cf22009-08-14 17:19:06 +03001151 p = xdr_encode_opaque_fixed(p, args->stateid->data, NFS4_STATEID_SIZE);
Benny Halevyb95be5a2009-08-14 17:19:01 +03001152 p = xdr_encode_hyper(p, args->fl->fl_start);
Benny Halevy34558512009-08-14 17:19:30 +03001153 xdr_encode_hyper(p, nfs4_lock_length(args->fl));
Andy Adamsond0179312008-12-23 16:06:17 -05001154 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001155 hdr->replen += decode_locku_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001156}
1157
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04001158static void encode_release_lockowner(struct xdr_stream *xdr, const struct nfs_lowner *lowner, struct compound_hdr *hdr)
1159{
1160 __be32 *p;
1161
1162 p = reserve_space(xdr, 4);
1163 *p = cpu_to_be32(OP_RELEASE_LOCKOWNER);
1164 encode_lockowner(xdr, lowner);
1165 hdr->nops++;
1166 hdr->replen += decode_release_lockowner_maxsz;
1167}
1168
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001169static void encode_lookup(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001170{
1171 int len = name->len;
Al Viro8687b632006-10-19 23:28:48 -07001172 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001173
Benny Halevy13c65ce2009-08-14 17:19:25 +03001174 p = reserve_space(xdr, 8 + len);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001175 *p++ = cpu_to_be32(OP_LOOKUP);
Benny Halevy811652b2009-08-14 17:19:34 +03001176 xdr_encode_opaque(p, name->name, len);
Andy Adamsond0179312008-12-23 16:06:17 -05001177 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001178 hdr->replen += decode_lookup_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001179}
1180
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001181static void encode_share_access(struct xdr_stream *xdr, fmode_t fmode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001182{
Al Viro8687b632006-10-19 23:28:48 -07001183 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001184
Benny Halevy13c65ce2009-08-14 17:19:25 +03001185 p = reserve_space(xdr, 8);
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001186 switch (fmode & (FMODE_READ|FMODE_WRITE)) {
Andy Adamson05d564f2008-12-23 16:06:15 -05001187 case FMODE_READ:
Benny Halevye75bc1c2009-08-14 17:18:54 +03001188 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_READ);
Andy Adamson05d564f2008-12-23 16:06:15 -05001189 break;
1190 case FMODE_WRITE:
Benny Halevye75bc1c2009-08-14 17:18:54 +03001191 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_WRITE);
Andy Adamson05d564f2008-12-23 16:06:15 -05001192 break;
1193 case FMODE_READ|FMODE_WRITE:
Benny Halevye75bc1c2009-08-14 17:18:54 +03001194 *p++ = cpu_to_be32(NFS4_SHARE_ACCESS_BOTH);
Andy Adamson05d564f2008-12-23 16:06:15 -05001195 break;
1196 default:
Benny Halevye75bc1c2009-08-14 17:18:54 +03001197 *p++ = cpu_to_be32(0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001198 }
Benny Halevy34558512009-08-14 17:19:30 +03001199 *p = cpu_to_be32(0); /* for linux, share_deny = 0 always */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001200}
1201
1202static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1203{
Al Viro8687b632006-10-19 23:28:48 -07001204 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001205 /*
1206 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
1207 * owner 4 = 32
1208 */
Benny Halevy13c65ce2009-08-14 17:19:25 +03001209 p = reserve_space(xdr, 8);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001210 *p++ = cpu_to_be32(OP_OPEN);
Benny Halevy34558512009-08-14 17:19:30 +03001211 *p = cpu_to_be32(arg->seqid->sequence->counter);
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001212 encode_share_access(xdr, arg->fmode);
Benny Halevy13c65ce2009-08-14 17:19:25 +03001213 p = reserve_space(xdr, 28);
Benny Halevyb95be5a2009-08-14 17:19:01 +03001214 p = xdr_encode_hyper(p, arg->clientid);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001215 *p++ = cpu_to_be32(16);
Benny Halevy93f0cf22009-08-14 17:19:06 +03001216 p = xdr_encode_opaque_fixed(p, "open id:", 8);
Benny Halevy34558512009-08-14 17:19:30 +03001217 xdr_encode_hyper(p, arg->id);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001218}
1219
1220static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1221{
Al Viro8687b632006-10-19 23:28:48 -07001222 __be32 *p;
Alexandros Batsakis4882ef72009-12-05 13:30:21 -05001223 struct nfs_client *clp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001224
Benny Halevy13c65ce2009-08-14 17:19:25 +03001225 p = reserve_space(xdr, 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001226 switch(arg->open_flags & O_EXCL) {
Andy Adamson05d564f2008-12-23 16:06:15 -05001227 case 0:
Benny Halevy34558512009-08-14 17:19:30 +03001228 *p = cpu_to_be32(NFS4_CREATE_UNCHECKED);
Andy Adamson05d564f2008-12-23 16:06:15 -05001229 encode_attrs(xdr, arg->u.attrs, arg->server);
1230 break;
1231 default:
Alexandros Batsakis4882ef72009-12-05 13:30:21 -05001232 clp = arg->server->nfs_client;
Trond Myklebusta4432342010-06-16 09:52:27 -04001233 if (clp->cl_mvops->minor_version > 0) {
Alexandros Batsakis4882ef72009-12-05 13:30:21 -05001234 if (nfs4_has_persistent_session(clp)) {
1235 *p = cpu_to_be32(NFS4_CREATE_GUARDED);
1236 encode_attrs(xdr, arg->u.attrs, arg->server);
1237 } else {
1238 struct iattr dummy;
1239
1240 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE4_1);
1241 encode_nfs4_verifier(xdr, &arg->u.verifier);
1242 dummy.ia_valid = 0;
1243 encode_attrs(xdr, &dummy, arg->server);
1244 }
1245 } else {
1246 *p = cpu_to_be32(NFS4_CREATE_EXCLUSIVE);
1247 encode_nfs4_verifier(xdr, &arg->u.verifier);
1248 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001249 }
1250}
1251
1252static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
1253{
Al Viro8687b632006-10-19 23:28:48 -07001254 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001255
Benny Halevy13c65ce2009-08-14 17:19:25 +03001256 p = reserve_space(xdr, 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001257 switch (arg->open_flags & O_CREAT) {
Andy Adamson05d564f2008-12-23 16:06:15 -05001258 case 0:
Benny Halevy34558512009-08-14 17:19:30 +03001259 *p = cpu_to_be32(NFS4_OPEN_NOCREATE);
Andy Adamson05d564f2008-12-23 16:06:15 -05001260 break;
1261 default:
1262 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
Benny Halevy34558512009-08-14 17:19:30 +03001263 *p = cpu_to_be32(NFS4_OPEN_CREATE);
Andy Adamson05d564f2008-12-23 16:06:15 -05001264 encode_createmode(xdr, arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001265 }
1266}
1267
Trond Myklebustbd7bf9d2008-12-23 15:21:53 -05001268static inline void encode_delegation_type(struct xdr_stream *xdr, fmode_t delegation_type)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269{
Al Viro8687b632006-10-19 23:28:48 -07001270 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001271
Benny Halevy13c65ce2009-08-14 17:19:25 +03001272 p = reserve_space(xdr, 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001273 switch (delegation_type) {
Andy Adamson05d564f2008-12-23 16:06:15 -05001274 case 0:
Benny Halevy34558512009-08-14 17:19:30 +03001275 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_NONE);
Andy Adamson05d564f2008-12-23 16:06:15 -05001276 break;
1277 case FMODE_READ:
Benny Halevy34558512009-08-14 17:19:30 +03001278 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_READ);
Andy Adamson05d564f2008-12-23 16:06:15 -05001279 break;
1280 case FMODE_WRITE|FMODE_READ:
Benny Halevy34558512009-08-14 17:19:30 +03001281 *p = cpu_to_be32(NFS4_OPEN_DELEGATE_WRITE);
Andy Adamson05d564f2008-12-23 16:06:15 -05001282 break;
1283 default:
1284 BUG();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001285 }
1286}
1287
1288static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
1289{
Al Viro8687b632006-10-19 23:28:48 -07001290 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001291
Benny Halevy13c65ce2009-08-14 17:19:25 +03001292 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001293 *p = cpu_to_be32(NFS4_OPEN_CLAIM_NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001294 encode_string(xdr, name->len, name->name);
1295}
1296
Trond Myklebustbd7bf9d2008-12-23 15:21:53 -05001297static inline void encode_claim_previous(struct xdr_stream *xdr, fmode_t type)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001298{
Al Viro8687b632006-10-19 23:28:48 -07001299 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001300
Benny Halevy13c65ce2009-08-14 17:19:25 +03001301 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001302 *p = cpu_to_be32(NFS4_OPEN_CLAIM_PREVIOUS);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001303 encode_delegation_type(xdr, type);
1304}
1305
1306static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
1307{
Al Viro8687b632006-10-19 23:28:48 -07001308 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001309
Benny Halevy13c65ce2009-08-14 17:19:25 +03001310 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001311 *p++ = cpu_to_be32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
Benny Halevy34558512009-08-14 17:19:30 +03001312 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001313 encode_string(xdr, name->len, name->name);
1314}
1315
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001316static void encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001317{
1318 encode_openhdr(xdr, arg);
1319 encode_opentype(xdr, arg);
1320 switch (arg->claim) {
Andy Adamson05d564f2008-12-23 16:06:15 -05001321 case NFS4_OPEN_CLAIM_NULL:
1322 encode_claim_null(xdr, arg->name);
1323 break;
1324 case NFS4_OPEN_CLAIM_PREVIOUS:
1325 encode_claim_previous(xdr, arg->u.delegation_type);
1326 break;
1327 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
1328 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
1329 break;
1330 default:
1331 BUG();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001332 }
Andy Adamsond0179312008-12-23 16:06:17 -05001333 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001334 hdr->replen += decode_open_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001335}
1336
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001337static void encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001338{
Al Viro8687b632006-10-19 23:28:48 -07001339 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001340
Benny Halevy13c65ce2009-08-14 17:19:25 +03001341 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001342 *p++ = cpu_to_be32(OP_OPEN_CONFIRM);
Benny Halevy93f0cf22009-08-14 17:19:06 +03001343 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
Benny Halevy34558512009-08-14 17:19:30 +03001344 *p = cpu_to_be32(arg->seqid->sequence->counter);
Andy Adamsond0179312008-12-23 16:06:17 -05001345 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001346 hdr->replen += decode_open_confirm_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001347}
1348
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001349static void encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001350{
Al Viro8687b632006-10-19 23:28:48 -07001351 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001352
Benny Halevy13c65ce2009-08-14 17:19:25 +03001353 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE+4);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001354 *p++ = cpu_to_be32(OP_OPEN_DOWNGRADE);
Benny Halevy93f0cf22009-08-14 17:19:06 +03001355 p = xdr_encode_opaque_fixed(p, arg->stateid->data, NFS4_STATEID_SIZE);
Benny Halevy34558512009-08-14 17:19:30 +03001356 *p = cpu_to_be32(arg->seqid->sequence->counter);
Trond Myklebustdc0b0272008-12-23 15:21:56 -05001357 encode_share_access(xdr, arg->fmode);
Andy Adamsond0179312008-12-23 16:06:17 -05001358 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001359 hdr->replen += decode_open_downgrade_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001360}
1361
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001362static void
Andy Adamsond0179312008-12-23 16:06:17 -05001363encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001364{
1365 int len = fh->size;
Al Viro8687b632006-10-19 23:28:48 -07001366 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001367
Benny Halevy13c65ce2009-08-14 17:19:25 +03001368 p = reserve_space(xdr, 8 + len);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001369 *p++ = cpu_to_be32(OP_PUTFH);
Benny Halevy811652b2009-08-14 17:19:34 +03001370 xdr_encode_opaque(p, fh->data, len);
Andy Adamsond0179312008-12-23 16:06:17 -05001371 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001372 hdr->replen += decode_putfh_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001373}
1374
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001375static void encode_putrootfh(struct xdr_stream *xdr, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001376{
Andy Adamson05d564f2008-12-23 16:06:15 -05001377 __be32 *p;
Andy Adamson6c0195a2008-12-23 16:06:15 -05001378
Benny Halevy13c65ce2009-08-14 17:19:25 +03001379 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001380 *p = cpu_to_be32(OP_PUTROOTFH);
Andy Adamsond0179312008-12-23 16:06:17 -05001381 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001382 hdr->replen += decode_putrootfh_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001383}
1384
Trond Myklebustf11ac8d2010-06-25 16:35:53 -04001385static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx, const struct nfs_lock_context *l_ctx)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001386{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001387 nfs4_stateid stateid;
Al Viro8687b632006-10-19 23:28:48 -07001388 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001389
Benny Halevy13c65ce2009-08-14 17:19:25 +03001390 p = reserve_space(xdr, NFS4_STATEID_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001391 if (ctx->state != NULL) {
Trond Myklebust77041ed2010-07-01 12:49:11 -04001392 nfs4_copy_stateid(&stateid, ctx->state, l_ctx->lockowner, l_ctx->pid);
Benny Halevy34558512009-08-14 17:19:30 +03001393 xdr_encode_opaque_fixed(p, stateid.data, NFS4_STATEID_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001394 } else
Benny Halevy34558512009-08-14 17:19:30 +03001395 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001396}
1397
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001398static void encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001399{
Al Viro8687b632006-10-19 23:28:48 -07001400 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001401
Benny Halevy13c65ce2009-08-14 17:19:25 +03001402 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001403 *p = cpu_to_be32(OP_READ);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001404
Trond Myklebustf11ac8d2010-06-25 16:35:53 -04001405 encode_stateid(xdr, args->context, args->lock_context);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001406
Benny Halevy13c65ce2009-08-14 17:19:25 +03001407 p = reserve_space(xdr, 12);
Benny Halevyb95be5a2009-08-14 17:19:01 +03001408 p = xdr_encode_hyper(p, args->offset);
Benny Halevy34558512009-08-14 17:19:30 +03001409 *p = cpu_to_be32(args->count);
Andy Adamsond0179312008-12-23 16:06:17 -05001410 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001411 hdr->replen += decode_read_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001412}
1413
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001414static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001415{
Bryan Schumaker82f2e542010-10-21 16:33:18 -04001416 uint32_t attrs[2] = {0, 0};
Trond Myklebust6f7a35b2010-10-24 12:11:42 -04001417 uint32_t dircount = readdir->count >> 1;
Al Viro8687b632006-10-19 23:28:48 -07001418 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001419
Bryan Schumaker82f2e542010-10-21 16:33:18 -04001420 if (readdir->plus) {
1421 attrs[0] |= FATTR4_WORD0_TYPE|FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE|
1422 FATTR4_WORD0_FSID|FATTR4_WORD0_FILEHANDLE;
1423 attrs[1] |= FATTR4_WORD1_MODE|FATTR4_WORD1_NUMLINKS|FATTR4_WORD1_OWNER|
1424 FATTR4_WORD1_OWNER_GROUP|FATTR4_WORD1_RAWDEV|
1425 FATTR4_WORD1_SPACE_USED|FATTR4_WORD1_TIME_ACCESS|
1426 FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY;
Trond Myklebust6f7a35b2010-10-24 12:11:42 -04001427 dircount >>= 1;
Bryan Schumaker82f2e542010-10-21 16:33:18 -04001428 }
1429 attrs[0] |= FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID;
1430 attrs[1] |= FATTR4_WORD1_MOUNTED_ON_FILEID;
Trond Myklebust6f7a35b2010-10-24 12:11:42 -04001431 /* Switch to mounted_on_fileid if the server supports it */
1432 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1433 attrs[0] &= ~FATTR4_WORD0_FILEID;
1434 else
1435 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
Bryan Schumaker82f2e542010-10-21 16:33:18 -04001436
Benny Halevy13c65ce2009-08-14 17:19:25 +03001437 p = reserve_space(xdr, 12+NFS4_VERIFIER_SIZE+20);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001438 *p++ = cpu_to_be32(OP_READDIR);
Benny Halevyb95be5a2009-08-14 17:19:01 +03001439 p = xdr_encode_hyper(p, readdir->cookie);
Benny Halevy93f0cf22009-08-14 17:19:06 +03001440 p = xdr_encode_opaque_fixed(p, readdir->verifier.data, NFS4_VERIFIER_SIZE);
Trond Myklebust6f7a35b2010-10-24 12:11:42 -04001441 *p++ = cpu_to_be32(dircount);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001442 *p++ = cpu_to_be32(readdir->count);
1443 *p++ = cpu_to_be32(2);
Bryan Schumaker82f2e542010-10-21 16:33:18 -04001444
Benny Halevye75bc1c2009-08-14 17:18:54 +03001445 *p++ = cpu_to_be32(attrs[0] & readdir->bitmask[0]);
Benny Halevy34558512009-08-14 17:19:30 +03001446 *p = cpu_to_be32(attrs[1] & readdir->bitmask[1]);
Andy Adamsond0179312008-12-23 16:06:17 -05001447 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001448 hdr->replen += decode_readdir_maxsz;
Fred Isaman44109242008-04-02 15:21:15 +03001449 dprintk("%s: cookie = %Lu, verifier = %08x:%08x, bitmap = %08x:%08x\n",
1450 __func__,
Trond Myklebusteadf4592005-06-22 17:16:39 +00001451 (unsigned long long)readdir->cookie,
1452 ((u32 *)readdir->verifier.data)[0],
1453 ((u32 *)readdir->verifier.data)[1],
1454 attrs[0] & readdir->bitmask[0],
1455 attrs[1] & readdir->bitmask[1]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001456}
1457
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001458static void encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001459{
Al Viro8687b632006-10-19 23:28:48 -07001460 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001461
Benny Halevy13c65ce2009-08-14 17:19:25 +03001462 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001463 *p = cpu_to_be32(OP_READLINK);
Andy Adamsond0179312008-12-23 16:06:17 -05001464 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001465 hdr->replen += decode_readlink_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001466}
1467
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001468static void encode_remove(struct xdr_stream *xdr, const struct qstr *name, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001469{
Al Viro8687b632006-10-19 23:28:48 -07001470 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001471
Benny Halevy13c65ce2009-08-14 17:19:25 +03001472 p = reserve_space(xdr, 8 + name->len);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001473 *p++ = cpu_to_be32(OP_REMOVE);
Benny Halevy811652b2009-08-14 17:19:34 +03001474 xdr_encode_opaque(p, name->name, name->len);
Andy Adamsond0179312008-12-23 16:06:17 -05001475 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001476 hdr->replen += decode_remove_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001477}
1478
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001479static void encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001480{
Al Viro8687b632006-10-19 23:28:48 -07001481 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001482
Benny Halevy811652b2009-08-14 17:19:34 +03001483 p = reserve_space(xdr, 4);
1484 *p = cpu_to_be32(OP_RENAME);
1485 encode_string(xdr, oldname->len, oldname->name);
1486 encode_string(xdr, newname->len, newname->name);
Andy Adamsond0179312008-12-23 16:06:17 -05001487 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001488 hdr->replen += decode_rename_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001489}
1490
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001491static void encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001492{
Al Viro8687b632006-10-19 23:28:48 -07001493 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001494
Benny Halevy13c65ce2009-08-14 17:19:25 +03001495 p = reserve_space(xdr, 12);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001496 *p++ = cpu_to_be32(OP_RENEW);
Benny Halevy34558512009-08-14 17:19:30 +03001497 xdr_encode_hyper(p, client_stateid->cl_clientid);
Andy Adamsond0179312008-12-23 16:06:17 -05001498 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001499 hdr->replen += decode_renew_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001500}
1501
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001502static void
Andy Adamsond0179312008-12-23 16:06:17 -05001503encode_restorefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
Trond Myklebust56ae19f2005-10-27 22:12:40 -04001504{
Al Viro8687b632006-10-19 23:28:48 -07001505 __be32 *p;
Trond Myklebust56ae19f2005-10-27 22:12:40 -04001506
Benny Halevy13c65ce2009-08-14 17:19:25 +03001507 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001508 *p = cpu_to_be32(OP_RESTOREFH);
Andy Adamsond0179312008-12-23 16:06:17 -05001509 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001510 hdr->replen += decode_restorefh_maxsz;
Trond Myklebust56ae19f2005-10-27 22:12:40 -04001511}
1512
1513static int
Andy Adamsond0179312008-12-23 16:06:17 -05001514encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg, struct compound_hdr *hdr)
J. Bruce Fields23ec6962005-06-22 17:16:22 +00001515{
Al Viro8687b632006-10-19 23:28:48 -07001516 __be32 *p;
J. Bruce Fields23ec6962005-06-22 17:16:22 +00001517
Benny Halevy13c65ce2009-08-14 17:19:25 +03001518 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001519 *p++ = cpu_to_be32(OP_SETATTR);
Benny Halevy34558512009-08-14 17:19:30 +03001520 xdr_encode_opaque_fixed(p, zero_stateid.data, NFS4_STATEID_SIZE);
Benny Halevy13c65ce2009-08-14 17:19:25 +03001521 p = reserve_space(xdr, 2*4);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001522 *p++ = cpu_to_be32(1);
Benny Halevy34558512009-08-14 17:19:30 +03001523 *p = cpu_to_be32(FATTR4_WORD0_ACL);
J. Bruce Fields23ec6962005-06-22 17:16:22 +00001524 if (arg->acl_len % 4)
1525 return -EINVAL;
Benny Halevy13c65ce2009-08-14 17:19:25 +03001526 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001527 *p = cpu_to_be32(arg->acl_len);
J. Bruce Fields23ec6962005-06-22 17:16:22 +00001528 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
Andy Adamsond0179312008-12-23 16:06:17 -05001529 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001530 hdr->replen += decode_setacl_maxsz;
J. Bruce Fields23ec6962005-06-22 17:16:22 +00001531 return 0;
1532}
1533
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001534static void
Andy Adamsond0179312008-12-23 16:06:17 -05001535encode_savefh(struct xdr_stream *xdr, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001536{
Al Viro8687b632006-10-19 23:28:48 -07001537 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001538
Benny Halevy13c65ce2009-08-14 17:19:25 +03001539 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001540 *p = cpu_to_be32(OP_SAVEFH);
Andy Adamsond0179312008-12-23 16:06:17 -05001541 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001542 hdr->replen += decode_savefh_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001543}
1544
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001545static void encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001546{
Al Viro8687b632006-10-19 23:28:48 -07001547 __be32 *p;
Andy Adamson6c0195a2008-12-23 16:06:15 -05001548
Benny Halevy13c65ce2009-08-14 17:19:25 +03001549 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001550 *p++ = cpu_to_be32(OP_SETATTR);
Benny Halevy34558512009-08-14 17:19:30 +03001551 xdr_encode_opaque_fixed(p, arg->stateid.data, NFS4_STATEID_SIZE);
Andy Adamsond0179312008-12-23 16:06:17 -05001552 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001553 hdr->replen += decode_setattr_maxsz;
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001554 encode_attrs(xdr, arg->iap, server);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001555}
1556
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001557static void encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001558{
Al Viro8687b632006-10-19 23:28:48 -07001559 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001560
Benny Halevy13c65ce2009-08-14 17:19:25 +03001561 p = reserve_space(xdr, 4 + NFS4_VERIFIER_SIZE);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001562 *p++ = cpu_to_be32(OP_SETCLIENTID);
Benny Halevy34558512009-08-14 17:19:30 +03001563 xdr_encode_opaque_fixed(p, setclientid->sc_verifier->data, NFS4_VERIFIER_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001564
1565 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
Benny Halevy13c65ce2009-08-14 17:19:25 +03001566 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001567 *p = cpu_to_be32(setclientid->sc_prog);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001568 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1569 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
Benny Halevy13c65ce2009-08-14 17:19:25 +03001570 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001571 *p = cpu_to_be32(setclientid->sc_cb_ident);
Andy Adamsond0179312008-12-23 16:06:17 -05001572 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001573 hdr->replen += decode_setclientid_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001574}
1575
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04001576static void encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_setclientid_res *arg, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001577{
Andy Adamson05d564f2008-12-23 16:06:15 -05001578 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001579
Benny Halevy13c65ce2009-08-14 17:19:25 +03001580 p = reserve_space(xdr, 12 + NFS4_VERIFIER_SIZE);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001581 *p++ = cpu_to_be32(OP_SETCLIENTID_CONFIRM);
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04001582 p = xdr_encode_hyper(p, arg->clientid);
1583 xdr_encode_opaque_fixed(p, arg->confirm.data, NFS4_VERIFIER_SIZE);
Andy Adamsond0179312008-12-23 16:06:17 -05001584 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001585 hdr->replen += decode_setclientid_confirm_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001586}
1587
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001588static void encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001589{
Al Viro8687b632006-10-19 23:28:48 -07001590 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001591
Benny Halevy13c65ce2009-08-14 17:19:25 +03001592 p = reserve_space(xdr, 4);
Benny Halevy34558512009-08-14 17:19:30 +03001593 *p = cpu_to_be32(OP_WRITE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001594
Trond Myklebustf11ac8d2010-06-25 16:35:53 -04001595 encode_stateid(xdr, args->context, args->lock_context);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001596
Benny Halevy13c65ce2009-08-14 17:19:25 +03001597 p = reserve_space(xdr, 16);
Benny Halevyb95be5a2009-08-14 17:19:01 +03001598 p = xdr_encode_hyper(p, args->offset);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001599 *p++ = cpu_to_be32(args->stable);
Benny Halevy34558512009-08-14 17:19:30 +03001600 *p = cpu_to_be32(args->count);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001601
1602 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
Andy Adamsond0179312008-12-23 16:06:17 -05001603 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001604 hdr->replen += decode_write_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001605}
1606
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001607static void encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid, struct compound_hdr *hdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001608{
Al Viro8687b632006-10-19 23:28:48 -07001609 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001610
Benny Halevy13c65ce2009-08-14 17:19:25 +03001611 p = reserve_space(xdr, 4+NFS4_STATEID_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001612
Benny Halevye75bc1c2009-08-14 17:18:54 +03001613 *p++ = cpu_to_be32(OP_DELEGRETURN);
Benny Halevy34558512009-08-14 17:19:30 +03001614 xdr_encode_opaque_fixed(p, stateid->data, NFS4_STATEID_SIZE);
Andy Adamsond0179312008-12-23 16:06:17 -05001615 hdr->nops++;
Benny Halevydadf0c22009-04-01 09:22:08 -04001616 hdr->replen += decode_delegreturn_maxsz;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001617}
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001618
Benny Halevy99fe60d2009-04-01 09:22:29 -04001619#if defined(CONFIG_NFS_V4_1)
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001620/* NFSv4.1 operations */
Benny Halevy99fe60d2009-04-01 09:22:29 -04001621static void encode_exchange_id(struct xdr_stream *xdr,
1622 struct nfs41_exchange_id_args *args,
1623 struct compound_hdr *hdr)
1624{
1625 __be32 *p;
1626
Benny Halevy13c65ce2009-08-14 17:19:25 +03001627 p = reserve_space(xdr, 4 + sizeof(args->verifier->data));
Benny Halevye75bc1c2009-08-14 17:18:54 +03001628 *p++ = cpu_to_be32(OP_EXCHANGE_ID);
Benny Halevy34558512009-08-14 17:19:30 +03001629 xdr_encode_opaque_fixed(p, args->verifier->data, sizeof(args->verifier->data));
Benny Halevy99fe60d2009-04-01 09:22:29 -04001630
1631 encode_string(xdr, args->id_len, args->id);
1632
Benny Halevy13c65ce2009-08-14 17:19:25 +03001633 p = reserve_space(xdr, 12);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001634 *p++ = cpu_to_be32(args->flags);
1635 *p++ = cpu_to_be32(0); /* zero length state_protect4_a */
Benny Halevy34558512009-08-14 17:19:30 +03001636 *p = cpu_to_be32(0); /* zero length implementation id array */
Benny Halevy99fe60d2009-04-01 09:22:29 -04001637 hdr->nops++;
1638 hdr->replen += decode_exchange_id_maxsz;
1639}
Andy Adamsonfc931582009-04-01 09:22:31 -04001640
1641static void encode_create_session(struct xdr_stream *xdr,
1642 struct nfs41_create_session_args *args,
1643 struct compound_hdr *hdr)
1644{
1645 __be32 *p;
1646 char machine_name[NFS4_MAX_MACHINE_NAME_LEN];
1647 uint32_t len;
1648 struct nfs_client *clp = args->client;
Mike Sager8e0d46e2009-12-17 12:06:26 -05001649 u32 max_resp_sz_cached;
1650
1651 /*
1652 * Assumes OPEN is the biggest non-idempotent compound.
1653 * 2 is the verifier.
1654 */
1655 max_resp_sz_cached = (NFS4_dec_open_sz + RPC_REPHDRSIZE +
1656 RPC_MAX_AUTH_SIZE + 2) * XDR_UNIT;
Andy Adamsonfc931582009-04-01 09:22:31 -04001657
Andy Adamsonfc931582009-04-01 09:22:31 -04001658 len = scnprintf(machine_name, sizeof(machine_name), "%s",
1659 clp->cl_ipaddr);
Benny Halevy42edd692009-08-14 17:19:13 +03001660
Benny Halevy13c65ce2009-08-14 17:19:25 +03001661 p = reserve_space(xdr, 20 + 2*28 + 20 + len + 12);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001662 *p++ = cpu_to_be32(OP_CREATE_SESSION);
Benny Halevyb95be5a2009-08-14 17:19:01 +03001663 p = xdr_encode_hyper(p, clp->cl_ex_clid);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001664 *p++ = cpu_to_be32(clp->cl_seqid); /*Sequence id */
1665 *p++ = cpu_to_be32(args->flags); /*flags */
Andy Adamsonfc931582009-04-01 09:22:31 -04001666
Andy Adamsonfc931582009-04-01 09:22:31 -04001667 /* Fore Channel */
Benny Halevye75bc1c2009-08-14 17:18:54 +03001668 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1669 *p++ = cpu_to_be32(args->fc_attrs.max_rqst_sz); /* max req size */
1670 *p++ = cpu_to_be32(args->fc_attrs.max_resp_sz); /* max resp size */
Mike Sager8e0d46e2009-12-17 12:06:26 -05001671 *p++ = cpu_to_be32(max_resp_sz_cached); /* Max resp sz cached */
Benny Halevye75bc1c2009-08-14 17:18:54 +03001672 *p++ = cpu_to_be32(args->fc_attrs.max_ops); /* max operations */
1673 *p++ = cpu_to_be32(args->fc_attrs.max_reqs); /* max requests */
1674 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
Andy Adamsonfc931582009-04-01 09:22:31 -04001675
1676 /* Back Channel */
Benny Halevye75bc1c2009-08-14 17:18:54 +03001677 *p++ = cpu_to_be32(args->fc_attrs.headerpadsz); /* header padding size */
1678 *p++ = cpu_to_be32(args->bc_attrs.max_rqst_sz); /* max req size */
1679 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz); /* max resp size */
1680 *p++ = cpu_to_be32(args->bc_attrs.max_resp_sz_cached); /* Max resp sz cached */
1681 *p++ = cpu_to_be32(args->bc_attrs.max_ops); /* max operations */
1682 *p++ = cpu_to_be32(args->bc_attrs.max_reqs); /* max requests */
1683 *p++ = cpu_to_be32(0); /* rdmachannel_attrs */
Andy Adamsonfc931582009-04-01 09:22:31 -04001684
Benny Halevye75bc1c2009-08-14 17:18:54 +03001685 *p++ = cpu_to_be32(args->cb_program); /* cb_program */
Benny Halevye75bc1c2009-08-14 17:18:54 +03001686 *p++ = cpu_to_be32(1);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001687 *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */
Andy Adamsonfc931582009-04-01 09:22:31 -04001688
1689 /* authsys_parms rfc1831 */
Benny Halevye75bc1c2009-08-14 17:18:54 +03001690 *p++ = cpu_to_be32((u32)clp->cl_boot_time.tv_nsec); /* stamp */
Benny Halevy811652b2009-08-14 17:19:34 +03001691 p = xdr_encode_opaque(p, machine_name, len);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001692 *p++ = cpu_to_be32(0); /* UID */
1693 *p++ = cpu_to_be32(0); /* GID */
Benny Halevy34558512009-08-14 17:19:30 +03001694 *p = cpu_to_be32(0); /* No more gids */
Andy Adamsonfc931582009-04-01 09:22:31 -04001695 hdr->nops++;
1696 hdr->replen += decode_create_session_maxsz;
1697}
Andy Adamson0f3e66c2009-04-01 09:22:34 -04001698
1699static void encode_destroy_session(struct xdr_stream *xdr,
1700 struct nfs4_session *session,
1701 struct compound_hdr *hdr)
1702{
1703 __be32 *p;
Benny Halevy13c65ce2009-08-14 17:19:25 +03001704 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001705 *p++ = cpu_to_be32(OP_DESTROY_SESSION);
Benny Halevy34558512009-08-14 17:19:30 +03001706 xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
Andy Adamson0f3e66c2009-04-01 09:22:34 -04001707 hdr->nops++;
1708 hdr->replen += decode_destroy_session_maxsz;
1709}
Ricardo Labiaga180197532009-12-05 16:08:40 -05001710
1711static void encode_reclaim_complete(struct xdr_stream *xdr,
1712 struct nfs41_reclaim_complete_args *args,
1713 struct compound_hdr *hdr)
1714{
1715 __be32 *p;
1716
1717 p = reserve_space(xdr, 8);
1718 *p++ = cpu_to_be32(OP_RECLAIM_COMPLETE);
1719 *p++ = cpu_to_be32(args->one_fs);
1720 hdr->nops++;
1721 hdr->replen += decode_reclaim_complete_maxsz;
1722}
Benny Halevy99fe60d2009-04-01 09:22:29 -04001723#endif /* CONFIG_NFS_V4_1 */
1724
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001725static void encode_sequence(struct xdr_stream *xdr,
1726 const struct nfs4_sequence_args *args,
1727 struct compound_hdr *hdr)
1728{
1729#if defined(CONFIG_NFS_V4_1)
1730 struct nfs4_session *session = args->sa_session;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04001731 struct nfs4_slot_table *tp;
1732 struct nfs4_slot *slot;
1733 __be32 *p;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001734
1735 if (!session)
1736 return;
1737
Andy Adamsonfc01cea2009-04-01 09:22:36 -04001738 tp = &session->fc_slot_table;
1739
1740 WARN_ON(args->sa_slotid == NFS4_MAX_SLOT_TABLE);
1741 slot = tp->slots + args->sa_slotid;
1742
Benny Halevy13c65ce2009-08-14 17:19:25 +03001743 p = reserve_space(xdr, 4 + NFS4_MAX_SESSIONID_LEN + 16);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001744 *p++ = cpu_to_be32(OP_SEQUENCE);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04001745
1746 /*
1747 * Sessionid + seqid + slotid + max slotid + cache_this
1748 */
1749 dprintk("%s: sessionid=%u:%u:%u:%u seqid=%d slotid=%d "
1750 "max_slotid=%d cache_this=%d\n",
1751 __func__,
1752 ((u32 *)session->sess_id.data)[0],
1753 ((u32 *)session->sess_id.data)[1],
1754 ((u32 *)session->sess_id.data)[2],
1755 ((u32 *)session->sess_id.data)[3],
1756 slot->seq_nr, args->sa_slotid,
1757 tp->highest_used_slotid, args->sa_cache_this);
Benny Halevy93f0cf22009-08-14 17:19:06 +03001758 p = xdr_encode_opaque_fixed(p, session->sess_id.data, NFS4_MAX_SESSIONID_LEN);
Benny Halevye75bc1c2009-08-14 17:18:54 +03001759 *p++ = cpu_to_be32(slot->seq_nr);
1760 *p++ = cpu_to_be32(args->sa_slotid);
1761 *p++ = cpu_to_be32(tp->highest_used_slotid);
Benny Halevy34558512009-08-14 17:19:30 +03001762 *p = cpu_to_be32(args->sa_cache_this);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001763 hdr->nops++;
1764 hdr->replen += decode_sequence_maxsz;
1765#endif /* CONFIG_NFS_V4_1 */
1766}
1767
Andy Adamsonb1f69b72010-10-20 00:18:03 -04001768#ifdef CONFIG_NFS_V4_1
1769static void
1770encode_getdeviceinfo(struct xdr_stream *xdr,
1771 const struct nfs4_getdeviceinfo_args *args,
1772 struct compound_hdr *hdr)
1773{
1774 __be32 *p;
1775
1776 p = reserve_space(xdr, 16 + NFS4_DEVICEID4_SIZE);
1777 *p++ = cpu_to_be32(OP_GETDEVICEINFO);
1778 p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data,
1779 NFS4_DEVICEID4_SIZE);
1780 *p++ = cpu_to_be32(args->pdev->layout_type);
1781 *p++ = cpu_to_be32(args->pdev->pglen); /* gdia_maxcount */
1782 *p++ = cpu_to_be32(0); /* bitmap length 0 */
1783 hdr->nops++;
1784 hdr->replen += decode_getdeviceinfo_maxsz;
1785}
1786
1787static void
1788encode_layoutget(struct xdr_stream *xdr,
1789 const struct nfs4_layoutget_args *args,
1790 struct compound_hdr *hdr)
1791{
1792 nfs4_stateid stateid;
1793 __be32 *p;
1794
1795 p = reserve_space(xdr, 44 + NFS4_STATEID_SIZE);
1796 *p++ = cpu_to_be32(OP_LAYOUTGET);
1797 *p++ = cpu_to_be32(0); /* Signal layout available */
1798 *p++ = cpu_to_be32(args->type);
1799 *p++ = cpu_to_be32(args->range.iomode);
1800 p = xdr_encode_hyper(p, args->range.offset);
1801 p = xdr_encode_hyper(p, args->range.length);
1802 p = xdr_encode_hyper(p, args->minlength);
1803 pnfs_get_layout_stateid(&stateid, NFS_I(args->inode)->layout,
1804 args->ctx->state);
1805 p = xdr_encode_opaque_fixed(p, &stateid.data, NFS4_STATEID_SIZE);
1806 *p = cpu_to_be32(args->maxcount);
1807
1808 dprintk("%s: 1st type:0x%x iomode:%d off:%lu len:%lu mc:%d\n",
1809 __func__,
1810 args->type,
1811 args->range.iomode,
1812 (unsigned long)args->range.offset,
1813 (unsigned long)args->range.length,
1814 args->maxcount);
1815 hdr->nops++;
1816 hdr->replen += decode_layoutget_maxsz;
1817}
1818#endif /* CONFIG_NFS_V4_1 */
1819
Linus Torvalds1da177e2005-04-16 15:20:36 -07001820/*
1821 * END OF "GENERIC" ENCODE ROUTINES.
1822 */
1823
Benny Halevy66cc0422009-04-01 09:22:10 -04001824static u32 nfs4_xdr_minorversion(const struct nfs4_sequence_args *args)
1825{
1826#if defined(CONFIG_NFS_V4_1)
1827 if (args->sa_session)
Trond Myklebusta4432342010-06-16 09:52:27 -04001828 return args->sa_session->clp->cl_mvops->minor_version;
Benny Halevy66cc0422009-04-01 09:22:10 -04001829#endif /* CONFIG_NFS_V4_1 */
1830 return 0;
1831}
1832
Linus Torvalds1da177e2005-04-16 15:20:36 -07001833/*
1834 * Encode an ACCESS request
1835 */
Al Viro8687b632006-10-19 23:28:48 -07001836static int nfs4_xdr_enc_access(struct rpc_rqst *req, __be32 *p, const struct nfs4_accessargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001837{
1838 struct xdr_stream xdr;
1839 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04001840 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001841 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07001842
1843 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04001844 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001845 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001846 encode_putfh(&xdr, args->fh, &hdr);
1847 encode_access(&xdr, args->access, &hdr);
1848 encode_getfattr(&xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05001849 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001850 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001851}
1852
1853/*
1854 * Encode LOOKUP request
1855 */
Al Viro8687b632006-10-19 23:28:48 -07001856static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001857{
1858 struct xdr_stream xdr;
1859 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04001860 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001861 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07001862
1863 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04001864 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001865 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001866 encode_putfh(&xdr, args->dir_fh, &hdr);
1867 encode_lookup(&xdr, args->name, &hdr);
1868 encode_getfh(&xdr, &hdr);
1869 encode_getfattr(&xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05001870 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001871 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001872}
1873
1874/*
1875 * Encode LOOKUP_ROOT request
1876 */
Al Viro8687b632006-10-19 23:28:48 -07001877static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, __be32 *p, const struct nfs4_lookup_root_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001878{
1879 struct xdr_stream xdr;
1880 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04001881 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001882 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07001883
1884 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04001885 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001886 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001887 encode_putrootfh(&xdr, &hdr);
1888 encode_getfh(&xdr, &hdr);
1889 encode_getfattr(&xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05001890 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001891 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001892}
1893
1894/*
1895 * Encode REMOVE request
1896 */
Trond Myklebust4fdc17b2007-07-14 15:39:57 -04001897static int nfs4_xdr_enc_remove(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001898{
1899 struct xdr_stream xdr;
1900 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04001901 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001902 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07001903
1904 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04001905 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001906 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001907 encode_putfh(&xdr, args->fh, &hdr);
1908 encode_remove(&xdr, &args->name, &hdr);
1909 encode_getfattr(&xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05001910 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001911 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001912}
1913
1914/*
1915 * Encode RENAME request
1916 */
Jeff Layton920769f2010-09-17 17:30:25 -04001917static int nfs4_xdr_enc_rename(struct rpc_rqst *req, __be32 *p, const struct nfs_renameargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001918{
1919 struct xdr_stream xdr;
1920 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04001921 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001922 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07001923
1924 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04001925 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001926 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001927 encode_putfh(&xdr, args->old_dir, &hdr);
1928 encode_savefh(&xdr, &hdr);
1929 encode_putfh(&xdr, args->new_dir, &hdr);
1930 encode_rename(&xdr, args->old_name, args->new_name, &hdr);
1931 encode_getfattr(&xdr, args->bitmask, &hdr);
1932 encode_restorefh(&xdr, &hdr);
1933 encode_getfattr(&xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05001934 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001935 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001936}
1937
1938/*
1939 * Encode LINK request
1940 */
Al Viro8687b632006-10-19 23:28:48 -07001941static int nfs4_xdr_enc_link(struct rpc_rqst *req, __be32 *p, const struct nfs4_link_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001942{
1943 struct xdr_stream xdr;
1944 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04001945 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001946 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07001947
1948 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04001949 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001950 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001951 encode_putfh(&xdr, args->fh, &hdr);
1952 encode_savefh(&xdr, &hdr);
1953 encode_putfh(&xdr, args->dir_fh, &hdr);
1954 encode_link(&xdr, args->name, &hdr);
1955 encode_getfattr(&xdr, args->bitmask, &hdr);
1956 encode_restorefh(&xdr, &hdr);
1957 encode_getfattr(&xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05001958 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001959 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001960}
1961
1962/*
1963 * Encode CREATE request
1964 */
Al Viro8687b632006-10-19 23:28:48 -07001965static int nfs4_xdr_enc_create(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001966{
1967 struct xdr_stream xdr;
1968 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04001969 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07001970 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07001971
1972 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04001973 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04001974 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001975 encode_putfh(&xdr, args->dir_fh, &hdr);
1976 encode_savefh(&xdr, &hdr);
1977 encode_create(&xdr, args, &hdr);
1978 encode_getfh(&xdr, &hdr);
1979 encode_getfattr(&xdr, args->bitmask, &hdr);
1980 encode_restorefh(&xdr, &hdr);
1981 encode_getfattr(&xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05001982 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05001983 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001984}
1985
1986/*
1987 * Encode SYMLINK request
1988 */
Al Viro8687b632006-10-19 23:28:48 -07001989static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_create_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001990{
1991 return nfs4_xdr_enc_create(req, p, args);
1992}
1993
1994/*
1995 * Encode GETATTR request
1996 */
Al Viro8687b632006-10-19 23:28:48 -07001997static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, __be32 *p, const struct nfs4_getattr_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001998{
1999 struct xdr_stream xdr;
2000 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002001 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002002 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002003
2004 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002005 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002006 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002007 encode_putfh(&xdr, args->fh, &hdr);
2008 encode_getfattr(&xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002009 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002010 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002011}
2012
2013/*
2014 * Encode a CLOSE request
2015 */
Al Viro8687b632006-10-19 23:28:48 -07002016static int nfs4_xdr_enc_close(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002017{
Andy Adamson05d564f2008-12-23 16:06:15 -05002018 struct xdr_stream xdr;
2019 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002020 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Andy Adamson05d564f2008-12-23 16:06:15 -05002021 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002022
Andy Adamson05d564f2008-12-23 16:06:15 -05002023 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002024 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002025 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002026 encode_putfh(&xdr, args->fh, &hdr);
2027 encode_close(&xdr, args, &hdr);
2028 encode_getfattr(&xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002029 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002030 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002031}
2032
2033/*
2034 * Encode an OPEN request
2035 */
Al Viro8687b632006-10-19 23:28:48 -07002036static int nfs4_xdr_enc_open(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002037{
2038 struct xdr_stream xdr;
2039 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002040 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002041 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002042
2043 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002044 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002045 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002046 encode_putfh(&xdr, args->fh, &hdr);
2047 encode_savefh(&xdr, &hdr);
2048 encode_open(&xdr, args, &hdr);
2049 encode_getfh(&xdr, &hdr);
2050 encode_getfattr(&xdr, args->bitmask, &hdr);
2051 encode_restorefh(&xdr, &hdr);
2052 encode_getfattr(&xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002053 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002054 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002055}
2056
2057/*
2058 * Encode an OPEN_CONFIRM request
2059 */
Al Viro8687b632006-10-19 23:28:48 -07002060static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_open_confirmargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002061{
2062 struct xdr_stream xdr;
2063 struct compound_hdr hdr = {
Andy Adamsond0179312008-12-23 16:06:17 -05002064 .nops = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002065 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002066
2067 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002068 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002069 encode_putfh(&xdr, args->fh, &hdr);
2070 encode_open_confirm(&xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002071 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002072 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002073}
2074
2075/*
2076 * Encode an OPEN request with no attributes.
2077 */
Al Viro8687b632006-10-19 23:28:48 -07002078static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, __be32 *p, struct nfs_openargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002079{
2080 struct xdr_stream xdr;
2081 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002082 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002083 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002084
2085 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002086 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002087 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002088 encode_putfh(&xdr, args->fh, &hdr);
2089 encode_open(&xdr, args, &hdr);
2090 encode_getfattr(&xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002091 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002092 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002093}
2094
2095/*
2096 * Encode an OPEN_DOWNGRADE request
2097 */
Al Viro8687b632006-10-19 23:28:48 -07002098static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, __be32 *p, struct nfs_closeargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002099{
2100 struct xdr_stream xdr;
2101 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002102 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002103 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002104
2105 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002106 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002107 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002108 encode_putfh(&xdr, args->fh, &hdr);
2109 encode_open_downgrade(&xdr, args, &hdr);
2110 encode_getfattr(&xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002111 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002112 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002113}
2114
2115/*
2116 * Encode a LOCK request
2117 */
Al Viro8687b632006-10-19 23:28:48 -07002118static int nfs4_xdr_enc_lock(struct rpc_rqst *req, __be32 *p, struct nfs_lock_args *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002119{
2120 struct xdr_stream xdr;
2121 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002122 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002123 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002124
2125 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002126 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002127 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002128 encode_putfh(&xdr, args->fh, &hdr);
2129 encode_lock(&xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002130 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002131 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002132}
2133
2134/*
2135 * Encode a LOCKT request
2136 */
Al Viro8687b632006-10-19 23:28:48 -07002137static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, __be32 *p, struct nfs_lockt_args *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002138{
2139 struct xdr_stream xdr;
2140 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002141 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002142 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002143
2144 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002145 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002146 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002147 encode_putfh(&xdr, args->fh, &hdr);
2148 encode_lockt(&xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002149 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002150 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002151}
2152
2153/*
2154 * Encode a LOCKU request
2155 */
Al Viro8687b632006-10-19 23:28:48 -07002156static int nfs4_xdr_enc_locku(struct rpc_rqst *req, __be32 *p, struct nfs_locku_args *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002157{
2158 struct xdr_stream xdr;
2159 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002160 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002161 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002162
2163 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002164 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002165 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002166 encode_putfh(&xdr, args->fh, &hdr);
2167 encode_locku(&xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002168 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002169 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002170}
2171
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04002172static int nfs4_xdr_enc_release_lockowner(struct rpc_rqst *req, __be32 *p, struct nfs_release_lockowner_args *args)
2173{
2174 struct xdr_stream xdr;
2175 struct compound_hdr hdr = {
2176 .minorversion = 0,
2177 };
2178
2179 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2180 encode_compound_hdr(&xdr, req, &hdr);
2181 encode_release_lockowner(&xdr, &args->lock_owner, &hdr);
2182 encode_nops(&hdr);
2183 return 0;
2184}
2185
Linus Torvalds1da177e2005-04-16 15:20:36 -07002186/*
2187 * Encode a READLINK request
2188 */
Al Viro8687b632006-10-19 23:28:48 -07002189static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, __be32 *p, const struct nfs4_readlink *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002190{
2191 struct xdr_stream xdr;
2192 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002193 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002194 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002195
2196 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002197 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002198 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002199 encode_putfh(&xdr, args->fh, &hdr);
2200 encode_readlink(&xdr, args, req, &hdr);
Trond Myklebuste3a535e2007-07-19 10:03:38 -04002201
Benny Halevy28f56692009-04-01 09:22:09 -04002202 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
Trond Myklebuste3a535e2007-07-19 10:03:38 -04002203 args->pgbase, args->pglen);
Andy Adamsond0179312008-12-23 16:06:17 -05002204 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002205 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002206}
2207
2208/*
2209 * Encode a READDIR request
2210 */
Al Viro8687b632006-10-19 23:28:48 -07002211static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, __be32 *p, const struct nfs4_readdir_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002212{
2213 struct xdr_stream xdr;
2214 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002215 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002216 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002217
2218 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002219 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002220 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002221 encode_putfh(&xdr, args->fh, &hdr);
2222 encode_readdir(&xdr, args, req, &hdr);
Trond Myklebustd6ac02d2007-07-19 10:03:37 -04002223
Benny Halevy28f56692009-04-01 09:22:09 -04002224 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2, args->pages,
Trond Myklebustd6ac02d2007-07-19 10:03:37 -04002225 args->pgbase, args->count);
2226 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
Benny Halevy28f56692009-04-01 09:22:09 -04002227 __func__, hdr.replen << 2, args->pages,
Trond Myklebustd6ac02d2007-07-19 10:03:37 -04002228 args->pgbase, args->count);
Andy Adamsond0179312008-12-23 16:06:17 -05002229 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002230 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002231}
2232
2233/*
2234 * Encode a READ request
2235 */
Al Viro8687b632006-10-19 23:28:48 -07002236static int nfs4_xdr_enc_read(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002237{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002238 struct xdr_stream xdr;
2239 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002240 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002241 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002242
2243 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002244 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002245 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002246 encode_putfh(&xdr, args->fh, &hdr);
2247 encode_read(&xdr, args, &hdr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002248
Benny Halevy28f56692009-04-01 09:22:09 -04002249 xdr_inline_pages(&req->rq_rcv_buf, hdr.replen << 2,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002250 args->pages, args->pgbase, args->count);
\"Talpey, Thomas\4f22ccc2007-09-10 13:44:58 -04002251 req->rq_rcv_buf.flags |= XDRBUF_READ;
Andy Adamsond0179312008-12-23 16:06:17 -05002252 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002253 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002254}
2255
2256/*
2257 * Encode an SETATTR request
2258 */
Al Viro8687b632006-10-19 23:28:48 -07002259static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, __be32 *p, struct nfs_setattrargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002260{
Andy Adamson05d564f2008-12-23 16:06:15 -05002261 struct xdr_stream xdr;
2262 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002263 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Andy Adamson05d564f2008-12-23 16:06:15 -05002264 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002265
Andy Adamson05d564f2008-12-23 16:06:15 -05002266 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002267 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002268 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002269 encode_putfh(&xdr, args->fh, &hdr);
2270 encode_setattr(&xdr, args, args->server, &hdr);
2271 encode_getfattr(&xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002272 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002273 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002274}
2275
2276/*
J. Bruce Fields029d1052005-06-22 17:16:22 +00002277 * Encode a GETACL request
2278 */
2279static int
Al Viro8687b632006-10-19 23:28:48 -07002280nfs4_xdr_enc_getacl(struct rpc_rqst *req, __be32 *p,
J. Bruce Fields029d1052005-06-22 17:16:22 +00002281 struct nfs_getaclargs *args)
2282{
2283 struct xdr_stream xdr;
J. Bruce Fields029d1052005-06-22 17:16:22 +00002284 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002285 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
J. Bruce Fields029d1052005-06-22 17:16:22 +00002286 };
Benny Halevy28f56692009-04-01 09:22:09 -04002287 uint32_t replen;
J. Bruce Fields029d1052005-06-22 17:16:22 +00002288
2289 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002290 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002291 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002292 encode_putfh(&xdr, args->fh, &hdr);
J. Bruce Fieldsd327cf72009-12-03 08:10:17 -05002293 replen = hdr.replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1;
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002294 encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0, &hdr);
2295
Benny Halevy28f56692009-04-01 09:22:09 -04002296 xdr_inline_pages(&req->rq_rcv_buf, replen << 2,
J. Bruce Fields029d1052005-06-22 17:16:22 +00002297 args->acl_pages, args->acl_pgbase, args->acl_len);
Andy Adamsond0179312008-12-23 16:06:17 -05002298 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002299 return 0;
J. Bruce Fields029d1052005-06-22 17:16:22 +00002300}
2301
2302/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002303 * Encode a WRITE request
2304 */
Al Viro8687b632006-10-19 23:28:48 -07002305static int nfs4_xdr_enc_write(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002306{
2307 struct xdr_stream xdr;
2308 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002309 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002310 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002311
2312 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002313 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002314 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002315 encode_putfh(&xdr, args->fh, &hdr);
2316 encode_write(&xdr, args, &hdr);
\"Talpey, Thomas\4f22ccc2007-09-10 13:44:58 -04002317 req->rq_snd_buf.flags |= XDRBUF_WRITE;
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002318 encode_getfattr(&xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002319 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002320 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002321}
2322
2323/*
2324 * a COMMIT request
2325 */
Al Viro8687b632006-10-19 23:28:48 -07002326static int nfs4_xdr_enc_commit(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002327{
2328 struct xdr_stream xdr;
2329 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002330 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002331 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002332
2333 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002334 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002335 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002336 encode_putfh(&xdr, args->fh, &hdr);
2337 encode_commit(&xdr, args, &hdr);
2338 encode_getfattr(&xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002339 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002340 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002341}
2342
2343/*
2344 * FSINFO request
2345 */
Al Viro8687b632006-10-19 23:28:48 -07002346static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, __be32 *p, struct nfs4_fsinfo_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002347{
2348 struct xdr_stream xdr;
2349 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002350 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002351 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002352
2353 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002354 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002355 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002356 encode_putfh(&xdr, args->fh, &hdr);
2357 encode_fsinfo(&xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002358 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002359 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002360}
2361
2362/*
2363 * a PATHCONF request
2364 */
Al Viro8687b632006-10-19 23:28:48 -07002365static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, __be32 *p, const struct nfs4_pathconf_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002366{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002367 struct xdr_stream xdr;
2368 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002369 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002370 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002371
2372 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002373 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002374 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002375 encode_putfh(&xdr, args->fh, &hdr);
2376 encode_getattr_one(&xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0],
2377 &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002378 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002379 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002380}
2381
2382/*
2383 * a STATFS request
2384 */
Al Viro8687b632006-10-19 23:28:48 -07002385static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, __be32 *p, const struct nfs4_statfs_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002386{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002387 struct xdr_stream xdr;
2388 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002389 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002390 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002391
2392 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002393 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002394 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002395 encode_putfh(&xdr, args->fh, &hdr);
2396 encode_getattr_two(&xdr, args->bitmask[0] & nfs4_statfs_bitmap[0],
2397 args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002398 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002399 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002400}
2401
2402/*
2403 * GETATTR_BITMAP request
2404 */
Benny Halevy43652ad2009-04-01 09:21:54 -04002405static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, __be32 *p,
2406 struct nfs4_server_caps_arg *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002407{
2408 struct xdr_stream xdr;
2409 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002410 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002411 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002412
2413 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002414 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002415 encode_sequence(&xdr, &args->seq_args, &hdr);
Benny Halevy43652ad2009-04-01 09:21:54 -04002416 encode_putfh(&xdr, args->fhandle, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002417 encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
2418 FATTR4_WORD0_LINK_SUPPORT|
2419 FATTR4_WORD0_SYMLINK_SUPPORT|
2420 FATTR4_WORD0_ACLSUPPORT, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002421 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002422 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002423}
2424
2425/*
2426 * a RENEW request
2427 */
Al Viro8687b632006-10-19 23:28:48 -07002428static int nfs4_xdr_enc_renew(struct rpc_rqst *req, __be32 *p, struct nfs_client *clp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002429{
2430 struct xdr_stream xdr;
2431 struct compound_hdr hdr = {
Andy Adamsond0179312008-12-23 16:06:17 -05002432 .nops = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002433 };
2434
2435 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002436 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002437 encode_renew(&xdr, clp, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002438 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002439 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002440}
2441
2442/*
2443 * a SETCLIENTID request
2444 */
Al Viro8687b632006-10-19 23:28:48 -07002445static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid *sc)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002446{
2447 struct xdr_stream xdr;
2448 struct compound_hdr hdr = {
Andy Adamsond0179312008-12-23 16:06:17 -05002449 .nops = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002450 };
2451
2452 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002453 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002454 encode_setclientid(&xdr, sc, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002455 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002456 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002457}
2458
2459/*
2460 * a SETCLIENTID_CONFIRM request
2461 */
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04002462static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs4_setclientid_res *arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002463{
2464 struct xdr_stream xdr;
2465 struct compound_hdr hdr = {
Andy Adamsond0179312008-12-23 16:06:17 -05002466 .nops = 0,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002467 };
2468 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002469
2470 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002471 encode_compound_hdr(&xdr, req, &hdr);
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04002472 encode_setclientid_confirm(&xdr, arg, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002473 encode_putrootfh(&xdr, &hdr);
2474 encode_fsinfo(&xdr, lease_bitmap, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002475 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002476 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002477}
2478
2479/*
2480 * DELEGRETURN request
2481 */
Al Viro8687b632006-10-19 23:28:48 -07002482static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, __be32 *p, const struct nfs4_delegreturnargs *args)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002483{
2484 struct xdr_stream xdr;
2485 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002486 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Linus Torvalds1da177e2005-04-16 15:20:36 -07002487 };
Linus Torvalds1da177e2005-04-16 15:20:36 -07002488
2489 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002490 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002491 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002492 encode_putfh(&xdr, args->fhandle, &hdr);
2493 encode_delegreturn(&xdr, args->stateid, &hdr);
2494 encode_getfattr(&xdr, args->bitmask, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05002495 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002496 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002497}
2498
2499/*
Trond Myklebust683b57b2006-06-09 09:34:22 -04002500 * Encode FS_LOCATIONS request
2501 */
Al Viro8687b632006-10-19 23:28:48 -07002502static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, __be32 *p, struct nfs4_fs_locations_arg *args)
Trond Myklebust683b57b2006-06-09 09:34:22 -04002503{
2504 struct xdr_stream xdr;
2505 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04002506 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Trond Myklebust683b57b2006-06-09 09:34:22 -04002507 };
Benny Halevy28f56692009-04-01 09:22:09 -04002508 uint32_t replen;
Trond Myklebust683b57b2006-06-09 09:34:22 -04002509
2510 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04002511 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04002512 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002513 encode_putfh(&xdr, args->dir_fh, &hdr);
2514 encode_lookup(&xdr, args->name, &hdr);
Benny Halevy28f56692009-04-01 09:22:09 -04002515 replen = hdr.replen; /* get the attribute into args->page */
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002516 encode_fs_locations(&xdr, args->bitmask, &hdr);
2517
Benny Halevy28f56692009-04-01 09:22:09 -04002518 xdr_inline_pages(&req->rq_rcv_buf, replen << 2, &args->page,
Trond Myklebust683b57b2006-06-09 09:34:22 -04002519 0, PAGE_SIZE);
Andy Adamsond0179312008-12-23 16:06:17 -05002520 encode_nops(&hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05002521 return 0;
Trond Myklebust683b57b2006-06-09 09:34:22 -04002522}
2523
Benny Halevy99fe60d2009-04-01 09:22:29 -04002524#if defined(CONFIG_NFS_V4_1)
2525/*
2526 * EXCHANGE_ID request
2527 */
2528static int nfs4_xdr_enc_exchange_id(struct rpc_rqst *req, uint32_t *p,
2529 struct nfs41_exchange_id_args *args)
2530{
2531 struct xdr_stream xdr;
2532 struct compound_hdr hdr = {
Trond Myklebusta4432342010-06-16 09:52:27 -04002533 .minorversion = args->client->cl_mvops->minor_version,
Benny Halevy99fe60d2009-04-01 09:22:29 -04002534 };
2535
2536 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2537 encode_compound_hdr(&xdr, req, &hdr);
2538 encode_exchange_id(&xdr, args, &hdr);
2539 encode_nops(&hdr);
2540 return 0;
2541}
Andy Adamson2050f0c2009-04-01 09:22:30 -04002542
2543/*
Andy Adamsonfc931582009-04-01 09:22:31 -04002544 * a CREATE_SESSION request
2545 */
2546static int nfs4_xdr_enc_create_session(struct rpc_rqst *req, uint32_t *p,
2547 struct nfs41_create_session_args *args)
2548{
2549 struct xdr_stream xdr;
2550 struct compound_hdr hdr = {
Trond Myklebusta4432342010-06-16 09:52:27 -04002551 .minorversion = args->client->cl_mvops->minor_version,
Andy Adamsonfc931582009-04-01 09:22:31 -04002552 };
2553
2554 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2555 encode_compound_hdr(&xdr, req, &hdr);
2556 encode_create_session(&xdr, args, &hdr);
2557 encode_nops(&hdr);
2558 return 0;
2559}
2560
2561/*
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002562 * a DESTROY_SESSION request
2563 */
2564static int nfs4_xdr_enc_destroy_session(struct rpc_rqst *req, uint32_t *p,
2565 struct nfs4_session *session)
2566{
2567 struct xdr_stream xdr;
2568 struct compound_hdr hdr = {
Trond Myklebusta4432342010-06-16 09:52:27 -04002569 .minorversion = session->clp->cl_mvops->minor_version,
Andy Adamson0f3e66c2009-04-01 09:22:34 -04002570 };
2571
2572 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2573 encode_compound_hdr(&xdr, req, &hdr);
2574 encode_destroy_session(&xdr, session, &hdr);
2575 encode_nops(&hdr);
2576 return 0;
2577}
2578
2579/*
Andy Adamsonfc01cea2009-04-01 09:22:36 -04002580 * a SEQUENCE request
2581 */
2582static int nfs4_xdr_enc_sequence(struct rpc_rqst *req, uint32_t *p,
2583 struct nfs4_sequence_args *args)
2584{
2585 struct xdr_stream xdr;
2586 struct compound_hdr hdr = {
2587 .minorversion = nfs4_xdr_minorversion(args),
2588 };
2589
2590 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2591 encode_compound_hdr(&xdr, req, &hdr);
2592 encode_sequence(&xdr, args, &hdr);
2593 encode_nops(&hdr);
2594 return 0;
2595}
2596
2597/*
Andy Adamson2050f0c2009-04-01 09:22:30 -04002598 * a GET_LEASE_TIME request
2599 */
2600static int nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, uint32_t *p,
2601 struct nfs4_get_lease_time_args *args)
2602{
2603 struct xdr_stream xdr;
2604 struct compound_hdr hdr = {
2605 .minorversion = nfs4_xdr_minorversion(&args->la_seq_args),
2606 };
2607 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
2608
2609 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2610 encode_compound_hdr(&xdr, req, &hdr);
2611 encode_sequence(&xdr, &args->la_seq_args, &hdr);
2612 encode_putrootfh(&xdr, &hdr);
2613 encode_fsinfo(&xdr, lease_bitmap, &hdr);
2614 encode_nops(&hdr);
2615 return 0;
2616}
Ricardo Labiaga180197532009-12-05 16:08:40 -05002617
2618/*
2619 * a RECLAIM_COMPLETE request
2620 */
2621static int nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, uint32_t *p,
2622 struct nfs41_reclaim_complete_args *args)
2623{
2624 struct xdr_stream xdr;
2625 struct compound_hdr hdr = {
2626 .minorversion = nfs4_xdr_minorversion(&args->seq_args)
2627 };
2628
2629 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2630 encode_compound_hdr(&xdr, req, &hdr);
2631 encode_sequence(&xdr, &args->seq_args, &hdr);
2632 encode_reclaim_complete(&xdr, args, &hdr);
2633 encode_nops(&hdr);
2634 return 0;
2635}
2636
Andy Adamsonb1f69b72010-10-20 00:18:03 -04002637/*
2638 * Encode GETDEVICEINFO request
2639 */
2640static int nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, uint32_t *p,
2641 struct nfs4_getdeviceinfo_args *args)
2642{
2643 struct xdr_stream xdr;
2644 struct compound_hdr hdr = {
2645 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2646 };
2647
2648 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2649 encode_compound_hdr(&xdr, req, &hdr);
2650 encode_sequence(&xdr, &args->seq_args, &hdr);
2651 encode_getdeviceinfo(&xdr, args, &hdr);
2652
2653 /* set up reply kvec. Subtract notification bitmap max size (2)
2654 * so that notification bitmap is put in xdr_buf tail */
2655 xdr_inline_pages(&req->rq_rcv_buf, (hdr.replen - 2) << 2,
2656 args->pdev->pages, args->pdev->pgbase,
2657 args->pdev->pglen);
2658
2659 encode_nops(&hdr);
2660 return 0;
2661}
2662
2663/*
2664 * Encode LAYOUTGET request
2665 */
2666static int nfs4_xdr_enc_layoutget(struct rpc_rqst *req, uint32_t *p,
2667 struct nfs4_layoutget_args *args)
2668{
2669 struct xdr_stream xdr;
2670 struct compound_hdr hdr = {
2671 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
2672 };
2673
2674 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2675 encode_compound_hdr(&xdr, req, &hdr);
2676 encode_sequence(&xdr, &args->seq_args, &hdr);
2677 encode_putfh(&xdr, NFS_FH(args->inode), &hdr);
2678 encode_layoutget(&xdr, args, &hdr);
2679 encode_nops(&hdr);
2680 return 0;
2681}
Benny Halevy99fe60d2009-04-01 09:22:29 -04002682#endif /* CONFIG_NFS_V4_1 */
2683
Benny Halevy686841b2009-08-14 17:19:48 +03002684static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
2685{
2686 dprintk("nfs: %s: prematurely hit end of receive buffer. "
2687 "Remaining buffer length is %tu words.\n",
2688 func, xdr->end - xdr->p);
2689}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002690
Trond Myklebust683b57b2006-06-09 09:34:22 -04002691static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002692{
Al Viro8687b632006-10-19 23:28:48 -07002693 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002694
Benny Halevyc0eae662009-08-14 17:20:14 +03002695 p = xdr_inline_decode(xdr, 4);
2696 if (unlikely(!p))
2697 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03002698 *len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03002699 p = xdr_inline_decode(xdr, *len);
2700 if (unlikely(!p))
2701 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002702 *string = (char *)p;
2703 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03002704out_overflow:
2705 print_overflow_msg(__func__, xdr);
2706 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002707}
2708
2709static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2710{
Al Viro8687b632006-10-19 23:28:48 -07002711 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002712
Benny Halevyc0eae662009-08-14 17:20:14 +03002713 p = xdr_inline_decode(xdr, 8);
2714 if (unlikely(!p))
2715 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03002716 hdr->status = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03002717 hdr->taglen = be32_to_cpup(p);
Andy Adamson6c0195a2008-12-23 16:06:15 -05002718
Benny Halevyc0eae662009-08-14 17:20:14 +03002719 p = xdr_inline_decode(xdr, hdr->taglen + 4);
2720 if (unlikely(!p))
2721 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002722 hdr->tag = (char *)p;
2723 p += XDR_QUADLEN(hdr->taglen);
Benny Halevycccddf42009-08-14 17:20:19 +03002724 hdr->nops = be32_to_cpup(p);
Benny Halevyaadf6152008-12-23 16:06:13 -05002725 if (unlikely(hdr->nops < 1))
2726 return nfs4_stat_to_errno(hdr->status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002727 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03002728out_overflow:
2729 print_overflow_msg(__func__, xdr);
2730 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002731}
2732
2733static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2734{
Al Viro8687b632006-10-19 23:28:48 -07002735 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002736 uint32_t opnum;
2737 int32_t nfserr;
2738
Benny Halevyc0eae662009-08-14 17:20:14 +03002739 p = xdr_inline_decode(xdr, 8);
2740 if (unlikely(!p))
2741 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03002742 opnum = be32_to_cpup(p++);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002743 if (opnum != expected) {
Chuck Leverfe82a182007-09-11 18:01:10 -04002744 dprintk("nfs: Server returned operation"
2745 " %d but we issued a request for %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07002746 opnum, expected);
2747 return -EIO;
2748 }
Benny Halevycccddf42009-08-14 17:20:19 +03002749 nfserr = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002750 if (nfserr != NFS_OK)
Benny Halevy856dff32008-03-31 17:39:06 +03002751 return nfs4_stat_to_errno(nfserr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002752 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03002753out_overflow:
2754 print_overflow_msg(__func__, xdr);
2755 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002756}
2757
2758/* Dummy routine */
David Howellsadfa6f92006-08-22 20:06:08 -04002759static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002760{
Al Viro8687b632006-10-19 23:28:48 -07002761 __be32 *p;
Trond Myklebust683b57b2006-06-09 09:34:22 -04002762 unsigned int strlen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002763 char *str;
2764
Benny Halevyc0eae662009-08-14 17:20:14 +03002765 p = xdr_inline_decode(xdr, 12);
2766 if (likely(p))
2767 return decode_opaque_inline(xdr, &strlen, &str);
2768 print_overflow_msg(__func__, xdr);
2769 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002770}
2771
2772static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2773{
Al Viro8687b632006-10-19 23:28:48 -07002774 uint32_t bmlen;
2775 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002776
Benny Halevyc0eae662009-08-14 17:20:14 +03002777 p = xdr_inline_decode(xdr, 4);
2778 if (unlikely(!p))
2779 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03002780 bmlen = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002781
2782 bitmap[0] = bitmap[1] = 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03002783 p = xdr_inline_decode(xdr, (bmlen << 2));
2784 if (unlikely(!p))
2785 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002786 if (bmlen > 0) {
Benny Halevy6f723f72009-08-14 17:19:37 +03002787 bitmap[0] = be32_to_cpup(p++);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002788 if (bmlen > 1)
Benny Halevycccddf42009-08-14 17:20:19 +03002789 bitmap[1] = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002790 }
2791 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03002792out_overflow:
2793 print_overflow_msg(__func__, xdr);
2794 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002795}
2796
Al Viro8687b632006-10-19 23:28:48 -07002797static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, __be32 **savep)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002798{
Al Viro8687b632006-10-19 23:28:48 -07002799 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002800
Benny Halevyc0eae662009-08-14 17:20:14 +03002801 p = xdr_inline_decode(xdr, 4);
2802 if (unlikely(!p))
2803 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03002804 *attrlen = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002805 *savep = xdr->p;
2806 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03002807out_overflow:
2808 print_overflow_msg(__func__, xdr);
2809 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002810}
2811
2812static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2813{
2814 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
Roman Borisov3388bff2010-10-13 16:54:51 +04002815 int ret;
2816 ret = decode_attr_bitmap(xdr, bitmask);
2817 if (unlikely(ret < 0))
2818 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002819 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2820 } else
2821 bitmask[0] = bitmask[1] = 0;
Fred Isaman44109242008-04-02 15:21:15 +03002822 dprintk("%s: bitmask=%08x:%08x\n", __func__, bitmask[0], bitmask[1]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002823 return 0;
2824}
2825
2826static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2827{
Al Viro8687b632006-10-19 23:28:48 -07002828 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04002829 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002830
2831 *type = 0;
2832 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2833 return -EIO;
2834 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03002835 p = xdr_inline_decode(xdr, 4);
2836 if (unlikely(!p))
2837 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03002838 *type = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002839 if (*type < NF4REG || *type > NF4NAMEDATTR) {
Harvey Harrison3110ff82008-05-02 13:42:44 -07002840 dprintk("%s: bad type %d\n", __func__, *type);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002841 return -EIO;
2842 }
2843 bitmap[0] &= ~FATTR4_WORD0_TYPE;
Trond Myklebust409924e2009-03-11 14:10:27 -04002844 ret = NFS_ATTR_FATTR_TYPE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002845 }
Trond Myklebustbca79472009-03-11 14:10:26 -04002846 dprintk("%s: type=0%o\n", __func__, nfs_type2fmt[*type]);
Trond Myklebust409924e2009-03-11 14:10:27 -04002847 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03002848out_overflow:
2849 print_overflow_msg(__func__, xdr);
2850 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002851}
2852
2853static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2854{
Al Viro8687b632006-10-19 23:28:48 -07002855 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04002856 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002857
2858 *change = 0;
2859 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2860 return -EIO;
2861 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03002862 p = xdr_inline_decode(xdr, 8);
2863 if (unlikely(!p))
2864 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03002865 xdr_decode_hyper(p, change);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002866 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
Trond Myklebust409924e2009-03-11 14:10:27 -04002867 ret = NFS_ATTR_FATTR_CHANGE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002868 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07002869 dprintk("%s: change attribute=%Lu\n", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002870 (unsigned long long)*change);
Trond Myklebust409924e2009-03-11 14:10:27 -04002871 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03002872out_overflow:
2873 print_overflow_msg(__func__, xdr);
2874 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002875}
2876
2877static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2878{
Al Viro8687b632006-10-19 23:28:48 -07002879 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04002880 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002881
2882 *size = 0;
2883 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2884 return -EIO;
2885 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03002886 p = xdr_inline_decode(xdr, 8);
2887 if (unlikely(!p))
2888 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03002889 xdr_decode_hyper(p, size);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002890 bitmap[0] &= ~FATTR4_WORD0_SIZE;
Trond Myklebust409924e2009-03-11 14:10:27 -04002891 ret = NFS_ATTR_FATTR_SIZE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002892 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07002893 dprintk("%s: file size=%Lu\n", __func__, (unsigned long long)*size);
Trond Myklebust409924e2009-03-11 14:10:27 -04002894 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03002895out_overflow:
2896 print_overflow_msg(__func__, xdr);
2897 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002898}
2899
2900static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2901{
Al Viro8687b632006-10-19 23:28:48 -07002902 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002903
2904 *res = 0;
2905 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2906 return -EIO;
2907 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03002908 p = xdr_inline_decode(xdr, 4);
2909 if (unlikely(!p))
2910 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03002911 *res = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002912 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2913 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07002914 dprintk("%s: link support=%s\n", __func__, *res == 0 ? "false" : "true");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002915 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03002916out_overflow:
2917 print_overflow_msg(__func__, xdr);
2918 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002919}
2920
2921static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2922{
Al Viro8687b632006-10-19 23:28:48 -07002923 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002924
2925 *res = 0;
2926 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2927 return -EIO;
2928 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03002929 p = xdr_inline_decode(xdr, 4);
2930 if (unlikely(!p))
2931 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03002932 *res = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002933 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2934 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07002935 dprintk("%s: symlink support=%s\n", __func__, *res == 0 ? "false" : "true");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002936 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03002937out_overflow:
2938 print_overflow_msg(__func__, xdr);
2939 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002940}
2941
Trond Myklebust8b4bdcf2006-06-09 09:34:19 -04002942static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002943{
Al Viro8687b632006-10-19 23:28:48 -07002944 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04002945 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002946
2947 fsid->major = 0;
2948 fsid->minor = 0;
2949 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2950 return -EIO;
2951 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03002952 p = xdr_inline_decode(xdr, 16);
2953 if (unlikely(!p))
2954 goto out_overflow;
Benny Halevy3ceb4db2009-08-14 17:19:41 +03002955 p = xdr_decode_hyper(p, &fsid->major);
Benny Halevycccddf42009-08-14 17:20:19 +03002956 xdr_decode_hyper(p, &fsid->minor);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002957 bitmap[0] &= ~FATTR4_WORD0_FSID;
Trond Myklebust409924e2009-03-11 14:10:27 -04002958 ret = NFS_ATTR_FATTR_FSID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002959 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07002960 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002961 (unsigned long long)fsid->major,
2962 (unsigned long long)fsid->minor);
Trond Myklebust409924e2009-03-11 14:10:27 -04002963 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03002964out_overflow:
2965 print_overflow_msg(__func__, xdr);
2966 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002967}
2968
2969static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2970{
Al Viro8687b632006-10-19 23:28:48 -07002971 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002972
2973 *res = 60;
2974 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2975 return -EIO;
2976 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03002977 p = xdr_inline_decode(xdr, 4);
2978 if (unlikely(!p))
2979 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03002980 *res = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002981 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2982 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07002983 dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002984 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03002985out_overflow:
2986 print_overflow_msg(__func__, xdr);
2987 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002988}
2989
Bryan Schumakerae42c702010-10-21 16:33:17 -04002990static int decode_attr_error(struct xdr_stream *xdr, uint32_t *bitmap)
2991{
2992 __be32 *p;
2993
2994 if (unlikely(bitmap[0] & (FATTR4_WORD0_RDATTR_ERROR - 1U)))
2995 return -EIO;
2996 if (likely(bitmap[0] & FATTR4_WORD0_RDATTR_ERROR)) {
2997 p = xdr_inline_decode(xdr, 4);
2998 if (unlikely(!p))
2999 goto out_overflow;
3000 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
3001 }
3002 return 0;
3003out_overflow:
3004 print_overflow_msg(__func__, xdr);
3005 return -EIO;
3006}
3007
3008static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fh *fh)
3009{
3010 __be32 *p;
3011 int len;
3012
Trond Myklebust7ad07352010-10-23 15:34:20 -04003013 if (fh != NULL)
3014 memset(fh, 0, sizeof(*fh));
Bryan Schumakerae42c702010-10-21 16:33:17 -04003015
3016 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEHANDLE - 1U)))
3017 return -EIO;
3018 if (likely(bitmap[0] & FATTR4_WORD0_FILEHANDLE)) {
3019 p = xdr_inline_decode(xdr, 4);
3020 if (unlikely(!p))
3021 goto out_overflow;
3022 len = be32_to_cpup(p);
3023 if (len > NFS4_FHSIZE)
3024 return -EIO;
Bryan Schumakerae42c702010-10-21 16:33:17 -04003025 p = xdr_inline_decode(xdr, len);
3026 if (unlikely(!p))
3027 goto out_overflow;
Trond Myklebust7ad07352010-10-23 15:34:20 -04003028 if (fh != NULL) {
3029 memcpy(fh->data, p, len);
3030 fh->size = len;
3031 }
Bryan Schumakerae42c702010-10-21 16:33:17 -04003032 bitmap[0] &= ~FATTR4_WORD0_FILEHANDLE;
3033 }
3034 return 0;
3035out_overflow:
3036 print_overflow_msg(__func__, xdr);
3037 return -EIO;
3038}
3039
Linus Torvalds1da177e2005-04-16 15:20:36 -07003040static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3041{
Al Viro8687b632006-10-19 23:28:48 -07003042 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003043
3044 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
3045 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
3046 return -EIO;
3047 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003048 p = xdr_inline_decode(xdr, 4);
3049 if (unlikely(!p))
3050 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003051 *res = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003052 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
3053 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003054 dprintk("%s: ACLs supported=%u\n", __func__, (unsigned int)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003055 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003056out_overflow:
3057 print_overflow_msg(__func__, xdr);
3058 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003059}
3060
3061static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3062{
Al Viro8687b632006-10-19 23:28:48 -07003063 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003064 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003065
3066 *fileid = 0;
3067 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
3068 return -EIO;
3069 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003070 p = xdr_inline_decode(xdr, 8);
3071 if (unlikely(!p))
3072 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003073 xdr_decode_hyper(p, fileid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003074 bitmap[0] &= ~FATTR4_WORD0_FILEID;
Trond Myklebust409924e2009-03-11 14:10:27 -04003075 ret = NFS_ATTR_FATTR_FILEID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003076 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003077 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
Trond Myklebust409924e2009-03-11 14:10:27 -04003078 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003079out_overflow:
3080 print_overflow_msg(__func__, xdr);
3081 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003082}
3083
Manoj Naik99baf622006-06-09 09:34:24 -04003084static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
3085{
Al Viro8687b632006-10-19 23:28:48 -07003086 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003087 int ret = 0;
Manoj Naik99baf622006-06-09 09:34:24 -04003088
3089 *fileid = 0;
3090 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
3091 return -EIO;
3092 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003093 p = xdr_inline_decode(xdr, 8);
3094 if (unlikely(!p))
3095 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003096 xdr_decode_hyper(p, fileid);
Manoj Naik99baf622006-06-09 09:34:24 -04003097 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
Trond Myklebust409924e2009-03-11 14:10:27 -04003098 ret = NFS_ATTR_FATTR_FILEID;
Manoj Naik99baf622006-06-09 09:34:24 -04003099 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003100 dprintk("%s: fileid=%Lu\n", __func__, (unsigned long long)*fileid);
Trond Myklebust409924e2009-03-11 14:10:27 -04003101 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003102out_overflow:
3103 print_overflow_msg(__func__, xdr);
3104 return -EIO;
Manoj Naik99baf622006-06-09 09:34:24 -04003105}
3106
Linus Torvalds1da177e2005-04-16 15:20:36 -07003107static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3108{
Al Viro8687b632006-10-19 23:28:48 -07003109 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003110 int status = 0;
3111
3112 *res = 0;
3113 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
3114 return -EIO;
3115 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003116 p = xdr_inline_decode(xdr, 8);
3117 if (unlikely(!p))
3118 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003119 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003120 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
3121 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003122 dprintk("%s: files avail=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003123 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003124out_overflow:
3125 print_overflow_msg(__func__, xdr);
3126 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003127}
3128
3129static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3130{
Al Viro8687b632006-10-19 23:28:48 -07003131 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003132 int status = 0;
3133
3134 *res = 0;
3135 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
3136 return -EIO;
3137 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003138 p = xdr_inline_decode(xdr, 8);
3139 if (unlikely(!p))
3140 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003141 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003142 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
3143 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003144 dprintk("%s: files free=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003145 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003146out_overflow:
3147 print_overflow_msg(__func__, xdr);
3148 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003149}
3150
3151static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3152{
Al Viro8687b632006-10-19 23:28:48 -07003153 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003154 int status = 0;
3155
3156 *res = 0;
3157 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
3158 return -EIO;
3159 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003160 p = xdr_inline_decode(xdr, 8);
3161 if (unlikely(!p))
3162 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003163 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003164 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
3165 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003166 dprintk("%s: files total=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003167 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003168out_overflow:
3169 print_overflow_msg(__func__, xdr);
3170 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003171}
3172
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003173static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
3174{
Chuck Lever464ad6b2007-10-26 13:32:08 -04003175 u32 n;
Al Viro8687b632006-10-19 23:28:48 -07003176 __be32 *p;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003177 int status = 0;
3178
Benny Halevyc0eae662009-08-14 17:20:14 +03003179 p = xdr_inline_decode(xdr, 4);
3180 if (unlikely(!p))
3181 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003182 n = be32_to_cpup(p);
Andy Adamson33a43f22006-06-09 09:34:30 -04003183 if (n == 0)
3184 goto root_path;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003185 dprintk("path ");
3186 path->ncomponents = 0;
3187 while (path->ncomponents < n) {
3188 struct nfs4_string *component = &path->components[path->ncomponents];
3189 status = decode_opaque_inline(xdr, &component->len, &component->data);
3190 if (unlikely(status != 0))
3191 goto out_eio;
3192 if (path->ncomponents != n)
3193 dprintk("/");
3194 dprintk("%s", component->data);
3195 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
3196 path->ncomponents++;
3197 else {
3198 dprintk("cannot parse %d components in path\n", n);
3199 goto out_eio;
3200 }
3201 }
3202out:
3203 dprintk("\n");
3204 return status;
Andy Adamson33a43f22006-06-09 09:34:30 -04003205root_path:
3206/* a root pathname is sent as a zero component4 */
3207 path->ncomponents = 1;
3208 path->components[0].len=0;
3209 path->components[0].data=NULL;
3210 dprintk("path /\n");
3211 goto out;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003212out_eio:
3213 dprintk(" status %d", status);
3214 status = -EIO;
3215 goto out;
Benny Halevyc0eae662009-08-14 17:20:14 +03003216out_overflow:
3217 print_overflow_msg(__func__, xdr);
3218 return -EIO;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003219}
3220
3221static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
Trond Myklebust683b57b2006-06-09 09:34:22 -04003222{
3223 int n;
Al Viro8687b632006-10-19 23:28:48 -07003224 __be32 *p;
Trond Myklebust683b57b2006-06-09 09:34:22 -04003225 int status = -EIO;
3226
3227 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
3228 goto out;
3229 status = 0;
3230 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
3231 goto out;
Harvey Harrison3110ff82008-05-02 13:42:44 -07003232 dprintk("%s: fsroot ", __func__);
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003233 status = decode_pathname(xdr, &res->fs_path);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003234 if (unlikely(status != 0))
3235 goto out;
Benny Halevyc0eae662009-08-14 17:20:14 +03003236 p = xdr_inline_decode(xdr, 4);
3237 if (unlikely(!p))
3238 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003239 n = be32_to_cpup(p);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003240 if (n <= 0)
3241 goto out_eio;
3242 res->nlocations = 0;
3243 while (res->nlocations < n) {
Chuck Lever464ad6b2007-10-26 13:32:08 -04003244 u32 m;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003245 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
Trond Myklebust683b57b2006-06-09 09:34:22 -04003246
Benny Halevyc0eae662009-08-14 17:20:14 +03003247 p = xdr_inline_decode(xdr, 4);
3248 if (unlikely(!p))
3249 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003250 m = be32_to_cpup(p);
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003251
3252 loc->nservers = 0;
Harvey Harrison3110ff82008-05-02 13:42:44 -07003253 dprintk("%s: servers ", __func__);
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003254 while (loc->nservers < m) {
3255 struct nfs4_string *server = &loc->servers[loc->nservers];
3256 status = decode_opaque_inline(xdr, &server->len, &server->data);
3257 if (unlikely(status != 0))
3258 goto out_eio;
3259 dprintk("%s ", server->data);
3260 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
3261 loc->nservers++;
3262 else {
Chuck Lever464ad6b2007-10-26 13:32:08 -04003263 unsigned int i;
3264 dprintk("%s: using first %u of %u servers "
3265 "returned for location %u\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003266 __func__,
Chuck Lever464ad6b2007-10-26 13:32:08 -04003267 NFS4_FS_LOCATION_MAXSERVERS,
3268 m, res->nlocations);
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003269 for (i = loc->nservers; i < m; i++) {
Trond Myklebust2e42c3e2007-05-14 17:20:41 -04003270 unsigned int len;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003271 char *data;
3272 status = decode_opaque_inline(xdr, &len, &data);
3273 if (unlikely(status != 0))
3274 goto out_eio;
3275 }
3276 }
3277 }
3278 status = decode_pathname(xdr, &loc->rootpath);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003279 if (unlikely(status != 0))
3280 goto out_eio;
Manoj Naik7aaa0b32006-06-09 09:34:23 -04003281 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
Trond Myklebust683b57b2006-06-09 09:34:22 -04003282 res->nlocations++;
3283 }
Trond Myklebust409924e2009-03-11 14:10:27 -04003284 if (res->nlocations != 0)
3285 status = NFS_ATTR_FATTR_V4_REFERRAL;
Trond Myklebust683b57b2006-06-09 09:34:22 -04003286out:
Harvey Harrison3110ff82008-05-02 13:42:44 -07003287 dprintk("%s: fs_locations done, error = %d\n", __func__, status);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003288 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003289out_overflow:
3290 print_overflow_msg(__func__, xdr);
Trond Myklebust683b57b2006-06-09 09:34:22 -04003291out_eio:
3292 status = -EIO;
3293 goto out;
3294}
3295
Linus Torvalds1da177e2005-04-16 15:20:36 -07003296static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3297{
Al Viro8687b632006-10-19 23:28:48 -07003298 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003299 int status = 0;
3300
3301 *res = 0;
3302 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
3303 return -EIO;
3304 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003305 p = xdr_inline_decode(xdr, 8);
3306 if (unlikely(!p))
3307 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003308 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003309 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
3310 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003311 dprintk("%s: maxfilesize=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003312 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003313out_overflow:
3314 print_overflow_msg(__func__, xdr);
3315 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003316}
3317
3318static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
3319{
Al Viro8687b632006-10-19 23:28:48 -07003320 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003321 int status = 0;
3322
3323 *maxlink = 1;
3324 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
3325 return -EIO;
3326 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003327 p = xdr_inline_decode(xdr, 4);
3328 if (unlikely(!p))
3329 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003330 *maxlink = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003331 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
3332 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003333 dprintk("%s: maxlink=%u\n", __func__, *maxlink);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003334 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003335out_overflow:
3336 print_overflow_msg(__func__, xdr);
3337 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003338}
3339
3340static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
3341{
Al Viro8687b632006-10-19 23:28:48 -07003342 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003343 int status = 0;
3344
3345 *maxname = 1024;
3346 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
3347 return -EIO;
3348 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003349 p = xdr_inline_decode(xdr, 4);
3350 if (unlikely(!p))
3351 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003352 *maxname = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003353 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
3354 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003355 dprintk("%s: maxname=%u\n", __func__, *maxname);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003356 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003357out_overflow:
3358 print_overflow_msg(__func__, xdr);
3359 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003360}
3361
3362static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3363{
Al Viro8687b632006-10-19 23:28:48 -07003364 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003365 int status = 0;
3366
3367 *res = 1024;
3368 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
3369 return -EIO;
3370 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
3371 uint64_t maxread;
Benny Halevyc0eae662009-08-14 17:20:14 +03003372 p = xdr_inline_decode(xdr, 8);
3373 if (unlikely(!p))
3374 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003375 xdr_decode_hyper(p, &maxread);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003376 if (maxread > 0x7FFFFFFF)
3377 maxread = 0x7FFFFFFF;
3378 *res = (uint32_t)maxread;
3379 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
3380 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003381 dprintk("%s: maxread=%lu\n", __func__, (unsigned long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003382 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003383out_overflow:
3384 print_overflow_msg(__func__, xdr);
3385 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003386}
3387
3388static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
3389{
Al Viro8687b632006-10-19 23:28:48 -07003390 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003391 int status = 0;
3392
3393 *res = 1024;
3394 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
3395 return -EIO;
3396 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
3397 uint64_t maxwrite;
Benny Halevyc0eae662009-08-14 17:20:14 +03003398 p = xdr_inline_decode(xdr, 8);
3399 if (unlikely(!p))
3400 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003401 xdr_decode_hyper(p, &maxwrite);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003402 if (maxwrite > 0x7FFFFFFF)
3403 maxwrite = 0x7FFFFFFF;
3404 *res = (uint32_t)maxwrite;
3405 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
3406 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003407 dprintk("%s: maxwrite=%lu\n", __func__, (unsigned long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003408 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003409out_overflow:
3410 print_overflow_msg(__func__, xdr);
3411 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003412}
3413
Trond Myklebustbca79472009-03-11 14:10:26 -04003414static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, umode_t *mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003415{
Trond Myklebustbca79472009-03-11 14:10:26 -04003416 uint32_t tmp;
Al Viro8687b632006-10-19 23:28:48 -07003417 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003418 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003419
3420 *mode = 0;
3421 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
3422 return -EIO;
3423 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003424 p = xdr_inline_decode(xdr, 4);
3425 if (unlikely(!p))
3426 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003427 tmp = be32_to_cpup(p);
Trond Myklebustbca79472009-03-11 14:10:26 -04003428 *mode = tmp & ~S_IFMT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003429 bitmap[1] &= ~FATTR4_WORD1_MODE;
Trond Myklebust409924e2009-03-11 14:10:27 -04003430 ret = NFS_ATTR_FATTR_MODE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003431 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003432 dprintk("%s: file mode=0%o\n", __func__, (unsigned int)*mode);
Trond Myklebust409924e2009-03-11 14:10:27 -04003433 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003434out_overflow:
3435 print_overflow_msg(__func__, xdr);
3436 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003437}
3438
3439static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
3440{
Al Viro8687b632006-10-19 23:28:48 -07003441 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003442 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003443
3444 *nlink = 1;
3445 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
3446 return -EIO;
3447 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003448 p = xdr_inline_decode(xdr, 4);
3449 if (unlikely(!p))
3450 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003451 *nlink = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003452 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
Trond Myklebust409924e2009-03-11 14:10:27 -04003453 ret = NFS_ATTR_FATTR_NLINK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003454 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003455 dprintk("%s: nlink=%u\n", __func__, (unsigned int)*nlink);
Trond Myklebust409924e2009-03-11 14:10:27 -04003456 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003457out_overflow:
3458 print_overflow_msg(__func__, xdr);
3459 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003460}
3461
Trond Myklebust80e52ac2009-08-09 15:06:19 -04003462static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap,
3463 struct nfs_client *clp, uint32_t *uid, int may_sleep)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003464{
Al Viro8687b632006-10-19 23:28:48 -07003465 uint32_t len;
3466 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003467 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003468
3469 *uid = -2;
3470 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
3471 return -EIO;
3472 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003473 p = xdr_inline_decode(xdr, 4);
3474 if (unlikely(!p))
3475 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003476 len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03003477 p = xdr_inline_decode(xdr, len);
3478 if (unlikely(!p))
3479 goto out_overflow;
Trond Myklebust80e52ac2009-08-09 15:06:19 -04003480 if (!may_sleep) {
3481 /* do nothing */
3482 } else if (len < XDR_MAX_NETOBJ) {
Trond Myklebust409924e2009-03-11 14:10:27 -04003483 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) == 0)
3484 ret = NFS_ATTR_FATTR_OWNER;
3485 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07003486 dprintk("%s: nfs_map_name_to_uid failed!\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003487 __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003488 } else
Chuck Leverfe82a182007-09-11 18:01:10 -04003489 dprintk("%s: name too long (%u)!\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003490 __func__, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003491 bitmap[1] &= ~FATTR4_WORD1_OWNER;
3492 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003493 dprintk("%s: uid=%d\n", __func__, (int)*uid);
Trond Myklebust409924e2009-03-11 14:10:27 -04003494 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003495out_overflow:
3496 print_overflow_msg(__func__, xdr);
3497 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003498}
3499
Trond Myklebust80e52ac2009-08-09 15:06:19 -04003500static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap,
3501 struct nfs_client *clp, uint32_t *gid, int may_sleep)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003502{
Al Viro8687b632006-10-19 23:28:48 -07003503 uint32_t len;
3504 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003505 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003506
3507 *gid = -2;
3508 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
3509 return -EIO;
3510 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003511 p = xdr_inline_decode(xdr, 4);
3512 if (unlikely(!p))
3513 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003514 len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03003515 p = xdr_inline_decode(xdr, len);
3516 if (unlikely(!p))
3517 goto out_overflow;
Trond Myklebust80e52ac2009-08-09 15:06:19 -04003518 if (!may_sleep) {
3519 /* do nothing */
3520 } else if (len < XDR_MAX_NETOBJ) {
Trond Myklebust409924e2009-03-11 14:10:27 -04003521 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) == 0)
3522 ret = NFS_ATTR_FATTR_GROUP;
3523 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07003524 dprintk("%s: nfs_map_group_to_gid failed!\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003525 __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003526 } else
Chuck Leverfe82a182007-09-11 18:01:10 -04003527 dprintk("%s: name too long (%u)!\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003528 __func__, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003529 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
3530 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003531 dprintk("%s: gid=%d\n", __func__, (int)*gid);
Trond Myklebust409924e2009-03-11 14:10:27 -04003532 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003533out_overflow:
3534 print_overflow_msg(__func__, xdr);
3535 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003536}
3537
3538static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
3539{
Al Viro8687b632006-10-19 23:28:48 -07003540 uint32_t major = 0, minor = 0;
3541 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003542 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003543
3544 *rdev = MKDEV(0,0);
3545 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
3546 return -EIO;
3547 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
3548 dev_t tmp;
3549
Benny Halevyc0eae662009-08-14 17:20:14 +03003550 p = xdr_inline_decode(xdr, 8);
3551 if (unlikely(!p))
3552 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03003553 major = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03003554 minor = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003555 tmp = MKDEV(major, minor);
3556 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
3557 *rdev = tmp;
3558 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
Trond Myklebust409924e2009-03-11 14:10:27 -04003559 ret = NFS_ATTR_FATTR_RDEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003560 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003561 dprintk("%s: rdev=(0x%x:0x%x)\n", __func__, major, minor);
Trond Myklebust409924e2009-03-11 14:10:27 -04003562 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003563out_overflow:
3564 print_overflow_msg(__func__, xdr);
3565 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003566}
3567
3568static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3569{
Al Viro8687b632006-10-19 23:28:48 -07003570 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003571 int status = 0;
3572
3573 *res = 0;
3574 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
3575 return -EIO;
3576 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003577 p = xdr_inline_decode(xdr, 8);
3578 if (unlikely(!p))
3579 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003580 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003581 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
3582 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003583 dprintk("%s: space avail=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003584 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003585out_overflow:
3586 print_overflow_msg(__func__, xdr);
3587 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003588}
3589
3590static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3591{
Al Viro8687b632006-10-19 23:28:48 -07003592 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003593 int status = 0;
3594
3595 *res = 0;
3596 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
3597 return -EIO;
3598 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003599 p = xdr_inline_decode(xdr, 8);
3600 if (unlikely(!p))
3601 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003602 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003603 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
3604 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003605 dprintk("%s: space free=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003606 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003607out_overflow:
3608 print_overflow_msg(__func__, xdr);
3609 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003610}
3611
3612static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
3613{
Al Viro8687b632006-10-19 23:28:48 -07003614 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003615 int status = 0;
3616
3617 *res = 0;
3618 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
3619 return -EIO;
3620 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003621 p = xdr_inline_decode(xdr, 8);
3622 if (unlikely(!p))
3623 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003624 xdr_decode_hyper(p, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003625 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
3626 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003627 dprintk("%s: space total=%Lu\n", __func__, (unsigned long long)*res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003628 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003629out_overflow:
3630 print_overflow_msg(__func__, xdr);
3631 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003632}
3633
3634static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
3635{
Al Viro8687b632006-10-19 23:28:48 -07003636 __be32 *p;
Trond Myklebust409924e2009-03-11 14:10:27 -04003637 int ret = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003638
3639 *used = 0;
3640 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
3641 return -EIO;
3642 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
Benny Halevyc0eae662009-08-14 17:20:14 +03003643 p = xdr_inline_decode(xdr, 8);
3644 if (unlikely(!p))
3645 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003646 xdr_decode_hyper(p, used);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003647 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
Trond Myklebust409924e2009-03-11 14:10:27 -04003648 ret = NFS_ATTR_FATTR_SPACE_USED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003649 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003650 dprintk("%s: space used=%Lu\n", __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003651 (unsigned long long)*used);
Trond Myklebust409924e2009-03-11 14:10:27 -04003652 return ret;
Benny Halevyc0eae662009-08-14 17:20:14 +03003653out_overflow:
3654 print_overflow_msg(__func__, xdr);
3655 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003656}
3657
3658static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
3659{
Al Viro8687b632006-10-19 23:28:48 -07003660 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003661 uint64_t sec;
3662 uint32_t nsec;
3663
Benny Halevyc0eae662009-08-14 17:20:14 +03003664 p = xdr_inline_decode(xdr, 12);
3665 if (unlikely(!p))
3666 goto out_overflow;
Benny Halevy3ceb4db2009-08-14 17:19:41 +03003667 p = xdr_decode_hyper(p, &sec);
Benny Halevycccddf42009-08-14 17:20:19 +03003668 nsec = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003669 time->tv_sec = (time_t)sec;
3670 time->tv_nsec = (long)nsec;
3671 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003672out_overflow:
3673 print_overflow_msg(__func__, xdr);
3674 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003675}
3676
3677static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3678{
3679 int status = 0;
3680
3681 time->tv_sec = 0;
3682 time->tv_nsec = 0;
3683 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
3684 return -EIO;
3685 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
3686 status = decode_attr_time(xdr, time);
Trond Myklebust409924e2009-03-11 14:10:27 -04003687 if (status == 0)
3688 status = NFS_ATTR_FATTR_ATIME;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003689 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
3690 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003691 dprintk("%s: atime=%ld\n", __func__, (long)time->tv_sec);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003692 return status;
3693}
3694
3695static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3696{
3697 int status = 0;
3698
3699 time->tv_sec = 0;
3700 time->tv_nsec = 0;
3701 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
3702 return -EIO;
3703 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
3704 status = decode_attr_time(xdr, time);
Trond Myklebust409924e2009-03-11 14:10:27 -04003705 if (status == 0)
3706 status = NFS_ATTR_FATTR_CTIME;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003707 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
3708 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003709 dprintk("%s: ctime=%ld\n", __func__, (long)time->tv_sec);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003710 return status;
3711}
3712
Ricardo Labiaga55b6e772010-10-12 16:30:06 -07003713static int decode_attr_time_delta(struct xdr_stream *xdr, uint32_t *bitmap,
3714 struct timespec *time)
3715{
3716 int status = 0;
3717
3718 time->tv_sec = 0;
3719 time->tv_nsec = 0;
3720 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_DELTA - 1U)))
3721 return -EIO;
3722 if (likely(bitmap[1] & FATTR4_WORD1_TIME_DELTA)) {
3723 status = decode_attr_time(xdr, time);
3724 bitmap[1] &= ~FATTR4_WORD1_TIME_DELTA;
3725 }
3726 dprintk("%s: time_delta=%ld %ld\n", __func__, (long)time->tv_sec,
3727 (long)time->tv_nsec);
3728 return status;
3729}
3730
Linus Torvalds1da177e2005-04-16 15:20:36 -07003731static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
3732{
3733 int status = 0;
3734
3735 time->tv_sec = 0;
3736 time->tv_nsec = 0;
3737 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
3738 return -EIO;
3739 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
3740 status = decode_attr_time(xdr, time);
Trond Myklebust409924e2009-03-11 14:10:27 -04003741 if (status == 0)
3742 status = NFS_ATTR_FATTR_MTIME;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003743 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
3744 }
Harvey Harrison3110ff82008-05-02 13:42:44 -07003745 dprintk("%s: mtime=%ld\n", __func__, (long)time->tv_sec);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003746 return status;
3747}
3748
Al Viro8687b632006-10-19 23:28:48 -07003749static int verify_attr_len(struct xdr_stream *xdr, __be32 *savep, uint32_t attrlen)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003750{
3751 unsigned int attrwords = XDR_QUADLEN(attrlen);
3752 unsigned int nwords = xdr->p - savep;
3753
3754 if (unlikely(attrwords != nwords)) {
Chuck Leverfe82a182007-09-11 18:01:10 -04003755 dprintk("%s: server returned incorrect attribute length: "
3756 "%u %c %u\n",
Harvey Harrison3110ff82008-05-02 13:42:44 -07003757 __func__,
Linus Torvalds1da177e2005-04-16 15:20:36 -07003758 attrwords << 2,
3759 (attrwords < nwords) ? '<' : '>',
3760 nwords << 2);
3761 return -EIO;
3762 }
3763 return 0;
3764}
3765
3766static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3767{
Al Viro8687b632006-10-19 23:28:48 -07003768 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003769
Benny Halevyc0eae662009-08-14 17:20:14 +03003770 p = xdr_inline_decode(xdr, 20);
3771 if (unlikely(!p))
3772 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03003773 cinfo->atomic = be32_to_cpup(p++);
Benny Halevy3ceb4db2009-08-14 17:19:41 +03003774 p = xdr_decode_hyper(p, &cinfo->before);
Benny Halevycccddf42009-08-14 17:20:19 +03003775 xdr_decode_hyper(p, &cinfo->after);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003776 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003777out_overflow:
3778 print_overflow_msg(__func__, xdr);
3779 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003780}
3781
3782static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
3783{
Al Viro8687b632006-10-19 23:28:48 -07003784 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003785 uint32_t supp, acc;
3786 int status;
3787
3788 status = decode_op_hdr(xdr, OP_ACCESS);
3789 if (status)
3790 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003791 p = xdr_inline_decode(xdr, 8);
3792 if (unlikely(!p))
3793 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03003794 supp = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03003795 acc = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003796 access->supported = supp;
3797 access->access = acc;
3798 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03003799out_overflow:
3800 print_overflow_msg(__func__, xdr);
3801 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003802}
3803
Benny Halevy07d30432009-08-14 17:19:52 +03003804static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003805{
Al Viro8687b632006-10-19 23:28:48 -07003806 __be32 *p;
Benny Halevy07d30432009-08-14 17:19:52 +03003807
3808 p = xdr_inline_decode(xdr, len);
3809 if (likely(p)) {
3810 memcpy(buf, p, len);
3811 return 0;
3812 }
3813 print_overflow_msg(__func__, xdr);
3814 return -EIO;
3815}
3816
3817static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
3818{
3819 return decode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003820}
3821
3822static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
3823{
Linus Torvalds1da177e2005-04-16 15:20:36 -07003824 int status;
3825
3826 status = decode_op_hdr(xdr, OP_CLOSE);
Trond Myklebustc1d51932008-04-07 13:20:54 -04003827 if (status != -EIO)
3828 nfs_increment_open_seqid(status, res->seqid);
Benny Halevy07d30432009-08-14 17:19:52 +03003829 if (!status)
3830 status = decode_stateid(xdr, &res->stateid);
3831 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003832}
3833
Benny Halevydb942bb2009-08-14 17:19:56 +03003834static int decode_verifier(struct xdr_stream *xdr, void *verifier)
3835{
3836 return decode_opaque_fixed(xdr, verifier, 8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003837}
3838
3839static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
3840{
Linus Torvalds1da177e2005-04-16 15:20:36 -07003841 int status;
3842
3843 status = decode_op_hdr(xdr, OP_COMMIT);
Benny Halevydb942bb2009-08-14 17:19:56 +03003844 if (!status)
3845 status = decode_verifier(xdr, res->verf->verifier);
3846 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003847}
3848
3849static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3850{
Al Viro8687b632006-10-19 23:28:48 -07003851 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003852 uint32_t bmlen;
3853 int status;
3854
3855 status = decode_op_hdr(xdr, OP_CREATE);
3856 if (status)
3857 return status;
3858 if ((status = decode_change_info(xdr, cinfo)))
3859 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03003860 p = xdr_inline_decode(xdr, 4);
3861 if (unlikely(!p))
3862 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03003863 bmlen = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03003864 p = xdr_inline_decode(xdr, bmlen << 2);
3865 if (likely(p))
3866 return 0;
3867out_overflow:
3868 print_overflow_msg(__func__, xdr);
3869 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003870}
3871
3872static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
3873{
Al Viro8687b632006-10-19 23:28:48 -07003874 __be32 *savep;
Andy Adamson6c0195a2008-12-23 16:06:15 -05003875 uint32_t attrlen, bitmap[2] = {0};
Linus Torvalds1da177e2005-04-16 15:20:36 -07003876 int status;
3877
3878 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3879 goto xdr_error;
3880 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3881 goto xdr_error;
3882 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3883 goto xdr_error;
3884 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
3885 goto xdr_error;
3886 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
3887 goto xdr_error;
3888 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
3889 goto xdr_error;
3890 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
3891 goto xdr_error;
3892 status = verify_attr_len(xdr, savep, attrlen);
3893xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07003894 dprintk("%s: xdr returned %d!\n", __func__, -status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003895 return status;
3896}
Andy Adamson6c0195a2008-12-23 16:06:15 -05003897
Linus Torvalds1da177e2005-04-16 15:20:36 -07003898static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
3899{
Al Viro8687b632006-10-19 23:28:48 -07003900 __be32 *savep;
Andy Adamson6c0195a2008-12-23 16:06:15 -05003901 uint32_t attrlen, bitmap[2] = {0};
Linus Torvalds1da177e2005-04-16 15:20:36 -07003902 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05003903
Linus Torvalds1da177e2005-04-16 15:20:36 -07003904 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3905 goto xdr_error;
3906 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3907 goto xdr_error;
3908 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3909 goto xdr_error;
3910
3911 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
3912 goto xdr_error;
3913 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
3914 goto xdr_error;
3915 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
3916 goto xdr_error;
3917 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
3918 goto xdr_error;
3919 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
3920 goto xdr_error;
3921 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
3922 goto xdr_error;
3923
3924 status = verify_attr_len(xdr, savep, attrlen);
3925xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07003926 dprintk("%s: xdr returned %d!\n", __func__, -status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003927 return status;
3928}
3929
3930static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
3931{
Al Viro8687b632006-10-19 23:28:48 -07003932 __be32 *savep;
Andy Adamson6c0195a2008-12-23 16:06:15 -05003933 uint32_t attrlen, bitmap[2] = {0};
Linus Torvalds1da177e2005-04-16 15:20:36 -07003934 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05003935
Linus Torvalds1da177e2005-04-16 15:20:36 -07003936 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3937 goto xdr_error;
3938 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3939 goto xdr_error;
3940 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3941 goto xdr_error;
3942
3943 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
3944 goto xdr_error;
3945 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
3946 goto xdr_error;
3947
3948 status = verify_attr_len(xdr, savep, attrlen);
3949xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07003950 dprintk("%s: xdr returned %d!\n", __func__, -status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003951 return status;
3952}
3953
Bryan Schumakerae42c702010-10-21 16:33:17 -04003954static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap,
3955 struct nfs_fattr *fattr, struct nfs_fh *fh,
Trond Myklebust80e52ac2009-08-09 15:06:19 -04003956 const struct nfs_server *server, int may_sleep)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003957{
Trond Myklebustbca79472009-03-11 14:10:26 -04003958 int status;
3959 umode_t fmode = 0;
Manoj Naik99baf622006-06-09 09:34:24 -04003960 uint64_t fileid;
Bryan Schumakerae42c702010-10-21 16:33:17 -04003961 uint32_t type;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003962
Trond Myklebustf26c7a72009-03-11 14:10:26 -04003963 status = decode_attr_type(xdr, bitmap, &type);
3964 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003965 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04003966 fattr->mode = 0;
3967 if (status != 0) {
3968 fattr->mode |= nfs_type2fmt[type];
3969 fattr->valid |= status;
3970 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003971
Trond Myklebustf26c7a72009-03-11 14:10:26 -04003972 status = decode_attr_change(xdr, bitmap, &fattr->change_attr);
3973 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003974 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04003975 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04003976
3977 status = decode_attr_size(xdr, bitmap, &fattr->size);
3978 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003979 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04003980 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04003981
3982 status = decode_attr_fsid(xdr, bitmap, &fattr->fsid);
3983 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003984 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04003985 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04003986
Bryan Schumakerae42c702010-10-21 16:33:17 -04003987 status = decode_attr_error(xdr, bitmap);
3988 if (status < 0)
3989 goto xdr_error;
3990
3991 status = decode_attr_filehandle(xdr, bitmap, fh);
3992 if (status < 0)
3993 goto xdr_error;
3994
Trond Myklebustf26c7a72009-03-11 14:10:26 -04003995 status = decode_attr_fileid(xdr, bitmap, &fattr->fileid);
3996 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003997 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04003998 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04003999
4000 status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
Manoj Naik7aaa0b32006-06-09 09:34:23 -04004001 struct nfs4_fs_locations,
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004002 fattr));
4003 if (status < 0)
Trond Myklebust683b57b2006-06-09 09:34:22 -04004004 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004005 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004006
4007 status = decode_attr_mode(xdr, bitmap, &fmode);
4008 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004009 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004010 if (status != 0) {
4011 fattr->mode |= fmode;
4012 fattr->valid |= status;
4013 }
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004014
4015 status = decode_attr_nlink(xdr, bitmap, &fattr->nlink);
4016 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004017 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004018 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004019
Trond Myklebust80e52ac2009-08-09 15:06:19 -04004020 status = decode_attr_owner(xdr, bitmap, server->nfs_client,
4021 &fattr->uid, may_sleep);
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004022 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004023 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004024 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004025
Trond Myklebust80e52ac2009-08-09 15:06:19 -04004026 status = decode_attr_group(xdr, bitmap, server->nfs_client,
4027 &fattr->gid, may_sleep);
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004028 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004029 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004030 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004031
4032 status = decode_attr_rdev(xdr, bitmap, &fattr->rdev);
4033 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004034 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004035 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004036
4037 status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used);
4038 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004039 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004040 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004041
4042 status = decode_attr_time_access(xdr, bitmap, &fattr->atime);
4043 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004044 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004045 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004046
4047 status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime);
4048 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004049 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004050 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004051
4052 status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime);
4053 if (status < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004054 goto xdr_error;
Trond Myklebust409924e2009-03-11 14:10:27 -04004055 fattr->valid |= status;
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004056
4057 status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid);
4058 if (status < 0)
Manoj Naik99baf622006-06-09 09:34:24 -04004059 goto xdr_error;
Trond Myklebust3201f3d2010-10-23 15:43:10 -04004060 if (status != 0 && !(fattr->valid & status)) {
Manoj Naik99baf622006-06-09 09:34:24 -04004061 fattr->fileid = fileid;
Trond Myklebust409924e2009-03-11 14:10:27 -04004062 fattr->valid |= status;
4063 }
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004064
Bryan Schumakerae42c702010-10-21 16:33:17 -04004065xdr_error:
4066 dprintk("%s: xdr returned %d\n", __func__, -status);
4067 return status;
4068}
4069
4070static int decode_getfattr_generic(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4071 struct nfs_fh *fh, const struct nfs_server *server, int may_sleep)
4072{
4073 __be32 *savep;
4074 uint32_t attrlen,
4075 bitmap[2] = {0};
4076 int status;
4077
4078 status = decode_op_hdr(xdr, OP_GETATTR);
4079 if (status < 0)
4080 goto xdr_error;
4081
4082 status = decode_attr_bitmap(xdr, bitmap);
4083 if (status < 0)
4084 goto xdr_error;
4085
4086 status = decode_attr_length(xdr, &attrlen, &savep);
4087 if (status < 0)
4088 goto xdr_error;
4089
4090 status = decode_getfattr_attrs(xdr, bitmap, fattr, fh, server, may_sleep);
4091 if (status < 0)
4092 goto xdr_error;
4093
Trond Myklebustf26c7a72009-03-11 14:10:26 -04004094 status = verify_attr_len(xdr, savep, attrlen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004095xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07004096 dprintk("%s: xdr returned %d\n", __func__, -status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004097 return status;
4098}
4099
Bryan Schumakerae42c702010-10-21 16:33:17 -04004100static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr,
4101 const struct nfs_server *server, int may_sleep)
4102{
4103 return decode_getfattr_generic(xdr, fattr, NULL, server, may_sleep);
4104}
Linus Torvalds1da177e2005-04-16 15:20:36 -07004105
Andy Adamson504913f2010-10-20 00:17:57 -04004106/*
4107 * Decode potentially multiple layout types. Currently we only support
4108 * one layout driver per file system.
4109 */
4110static int decode_first_pnfs_layout_type(struct xdr_stream *xdr,
4111 uint32_t *layouttype)
4112{
4113 uint32_t *p;
4114 int num;
4115
4116 p = xdr_inline_decode(xdr, 4);
4117 if (unlikely(!p))
4118 goto out_overflow;
4119 num = be32_to_cpup(p);
4120
4121 /* pNFS is not supported by the underlying file system */
4122 if (num == 0) {
4123 *layouttype = 0;
4124 return 0;
4125 }
4126 if (num > 1)
4127 printk(KERN_INFO "%s: Warning: Multiple pNFS layout drivers "
4128 "per filesystem not supported\n", __func__);
4129
4130 /* Decode and set first layout type, move xdr->p past unused types */
4131 p = xdr_inline_decode(xdr, num * 4);
4132 if (unlikely(!p))
4133 goto out_overflow;
4134 *layouttype = be32_to_cpup(p);
4135 return 0;
4136out_overflow:
4137 print_overflow_msg(__func__, xdr);
4138 return -EIO;
4139}
4140
4141/*
4142 * The type of file system exported.
4143 * Note we must ensure that layouttype is set in any non-error case.
4144 */
4145static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap,
4146 uint32_t *layouttype)
4147{
4148 int status = 0;
4149
4150 dprintk("%s: bitmap is %x\n", __func__, bitmap[1]);
4151 if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U)))
4152 return -EIO;
4153 if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) {
4154 status = decode_first_pnfs_layout_type(xdr, layouttype);
4155 bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES;
4156 } else
4157 *layouttype = 0;
4158 return status;
4159}
4160
Linus Torvalds1da177e2005-04-16 15:20:36 -07004161static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
4162{
Al Viro8687b632006-10-19 23:28:48 -07004163 __be32 *savep;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004164 uint32_t attrlen, bitmap[2];
4165 int status;
4166
4167 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4168 goto xdr_error;
4169 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4170 goto xdr_error;
4171 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4172 goto xdr_error;
4173
4174 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
4175
4176 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
4177 goto xdr_error;
4178 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
4179 goto xdr_error;
4180 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
4181 goto xdr_error;
4182 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
4183 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
4184 goto xdr_error;
4185 fsinfo->wtpref = fsinfo->wtmax;
Ricardo Labiaga55b6e772010-10-12 16:30:06 -07004186 status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta);
4187 if (status != 0)
4188 goto xdr_error;
Andy Adamson504913f2010-10-20 00:17:57 -04004189 status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype);
4190 if (status != 0)
4191 goto xdr_error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004192
4193 status = verify_attr_len(xdr, savep, attrlen);
4194xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07004195 dprintk("%s: xdr returned %d!\n", __func__, -status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004196 return status;
4197}
4198
4199static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
4200{
Al Viro8687b632006-10-19 23:28:48 -07004201 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004202 uint32_t len;
4203 int status;
4204
Trond Myklebust99367812007-07-17 21:52:41 -04004205 /* Zero handle first to allow comparisons */
4206 memset(fh, 0, sizeof(*fh));
4207
Linus Torvalds1da177e2005-04-16 15:20:36 -07004208 status = decode_op_hdr(xdr, OP_GETFH);
4209 if (status)
4210 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004211
Benny Halevyc0eae662009-08-14 17:20:14 +03004212 p = xdr_inline_decode(xdr, 4);
4213 if (unlikely(!p))
4214 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004215 len = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004216 if (len > NFS4_FHSIZE)
4217 return -EIO;
4218 fh->size = len;
Benny Halevyc0eae662009-08-14 17:20:14 +03004219 p = xdr_inline_decode(xdr, len);
4220 if (unlikely(!p))
4221 goto out_overflow;
Benny Halevy99398d02009-08-14 17:20:05 +03004222 memcpy(fh->data, p, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004223 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004224out_overflow:
4225 print_overflow_msg(__func__, xdr);
4226 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004227}
4228
4229static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4230{
4231 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05004232
Linus Torvalds1da177e2005-04-16 15:20:36 -07004233 status = decode_op_hdr(xdr, OP_LINK);
4234 if (status)
4235 return status;
4236 return decode_change_info(xdr, cinfo);
4237}
4238
4239/*
4240 * We create the owner, so we know a proper owner.id length is 4.
4241 */
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004242static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004243{
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004244 uint64_t offset, length, clientid;
Al Viro8687b632006-10-19 23:28:48 -07004245 __be32 *p;
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004246 uint32_t namelen, type;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004247
Bryan Schumakerbabddc72010-10-20 15:44:29 -04004248 p = xdr_inline_decode(xdr, 32); /* read 32 bytes */
Benny Halevyc0eae662009-08-14 17:20:14 +03004249 if (unlikely(!p))
4250 goto out_overflow;
Bryan Schumakerbabddc72010-10-20 15:44:29 -04004251 p = xdr_decode_hyper(p, &offset); /* read 2 8-byte long words */
Benny Halevy3ceb4db2009-08-14 17:19:41 +03004252 p = xdr_decode_hyper(p, &length);
Bryan Schumakerbabddc72010-10-20 15:44:29 -04004253 type = be32_to_cpup(p++); /* 4 byte read */
4254 if (fl != NULL) { /* manipulate file lock */
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004255 fl->fl_start = (loff_t)offset;
4256 fl->fl_end = fl->fl_start + (loff_t)length - 1;
4257 if (length == ~(uint64_t)0)
4258 fl->fl_end = OFFSET_MAX;
4259 fl->fl_type = F_WRLCK;
4260 if (type & 1)
4261 fl->fl_type = F_RDLCK;
4262 fl->fl_pid = 0;
4263 }
Bryan Schumakerbabddc72010-10-20 15:44:29 -04004264 p = xdr_decode_hyper(p, &clientid); /* read 8 bytes */
4265 namelen = be32_to_cpup(p); /* read 4 bytes */ /* have read all 32 bytes now */
4266 p = xdr_inline_decode(xdr, namelen); /* variable size field */
Benny Halevyc0eae662009-08-14 17:20:14 +03004267 if (likely(p))
4268 return -NFS4ERR_DENIED;
4269out_overflow:
4270 print_overflow_msg(__func__, xdr);
4271 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004272}
4273
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004274static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004275{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004276 int status;
4277
4278 status = decode_op_hdr(xdr, OP_LOCK);
Trond Myklebustc1d51932008-04-07 13:20:54 -04004279 if (status == -EIO)
4280 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004281 if (status == 0) {
Benny Halevy07d30432009-08-14 17:19:52 +03004282 status = decode_stateid(xdr, &res->stateid);
4283 if (unlikely(status))
4284 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004285 } else if (status == -NFS4ERR_DENIED)
Trond Myklebustc1d51932008-04-07 13:20:54 -04004286 status = decode_lock_denied(xdr, NULL);
4287 if (res->open_seqid != NULL)
4288 nfs_increment_open_seqid(status, res->open_seqid);
4289 nfs_increment_lock_seqid(status, res->lock_seqid);
4290out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004291 return status;
4292}
4293
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004294static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004295{
4296 int status;
4297 status = decode_op_hdr(xdr, OP_LOCKT);
4298 if (status == -NFS4ERR_DENIED)
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004299 return decode_lock_denied(xdr, res->denied);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004300 return status;
4301}
4302
Trond Myklebust911d1aa2006-01-03 09:55:16 +01004303static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004304{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004305 int status;
4306
4307 status = decode_op_hdr(xdr, OP_LOCKU);
Trond Myklebustc1d51932008-04-07 13:20:54 -04004308 if (status != -EIO)
4309 nfs_increment_lock_seqid(status, res->seqid);
Benny Halevy07d30432009-08-14 17:19:52 +03004310 if (status == 0)
4311 status = decode_stateid(xdr, &res->stateid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004312 return status;
4313}
4314
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04004315static int decode_release_lockowner(struct xdr_stream *xdr)
4316{
4317 return decode_op_hdr(xdr, OP_RELEASE_LOCKOWNER);
4318}
4319
Linus Torvalds1da177e2005-04-16 15:20:36 -07004320static int decode_lookup(struct xdr_stream *xdr)
4321{
4322 return decode_op_hdr(xdr, OP_LOOKUP);
4323}
4324
4325/* This is too sick! */
4326static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
4327{
Andy Adamson05d564f2008-12-23 16:06:15 -05004328 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004329 uint32_t limit_type, nblocks, blocksize;
4330
Benny Halevyc0eae662009-08-14 17:20:14 +03004331 p = xdr_inline_decode(xdr, 12);
4332 if (unlikely(!p))
4333 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03004334 limit_type = be32_to_cpup(p++);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004335 switch (limit_type) {
Andy Adamson05d564f2008-12-23 16:06:15 -05004336 case 1:
Benny Halevycccddf42009-08-14 17:20:19 +03004337 xdr_decode_hyper(p, maxsize);
Andy Adamson05d564f2008-12-23 16:06:15 -05004338 break;
4339 case 2:
Benny Halevy6f723f72009-08-14 17:19:37 +03004340 nblocks = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03004341 blocksize = be32_to_cpup(p);
Andy Adamson05d564f2008-12-23 16:06:15 -05004342 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004343 }
4344 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004345out_overflow:
4346 print_overflow_msg(__func__, xdr);
4347 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004348}
4349
4350static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
4351{
Andy Adamson05d564f2008-12-23 16:06:15 -05004352 __be32 *p;
4353 uint32_t delegation_type;
Benny Halevy07d30432009-08-14 17:19:52 +03004354 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004355
Benny Halevyc0eae662009-08-14 17:20:14 +03004356 p = xdr_inline_decode(xdr, 4);
4357 if (unlikely(!p))
4358 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004359 delegation_type = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004360 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
4361 res->delegation_type = 0;
4362 return 0;
4363 }
Benny Halevy07d30432009-08-14 17:19:52 +03004364 status = decode_stateid(xdr, &res->delegation);
4365 if (unlikely(status))
4366 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03004367 p = xdr_inline_decode(xdr, 4);
4368 if (unlikely(!p))
4369 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004370 res->do_recall = be32_to_cpup(p);
Andy Adamson05d564f2008-12-23 16:06:15 -05004371
Linus Torvalds1da177e2005-04-16 15:20:36 -07004372 switch (delegation_type) {
Andy Adamson05d564f2008-12-23 16:06:15 -05004373 case NFS4_OPEN_DELEGATE_READ:
4374 res->delegation_type = FMODE_READ;
4375 break;
4376 case NFS4_OPEN_DELEGATE_WRITE:
4377 res->delegation_type = FMODE_WRITE|FMODE_READ;
4378 if (decode_space_limit(xdr, &res->maxsize) < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004379 return -EIO;
4380 }
David Howells7539bba2006-08-22 20:06:09 -04004381 return decode_ace(xdr, NULL, res->server->nfs_client);
Benny Halevyc0eae662009-08-14 17:20:14 +03004382out_overflow:
4383 print_overflow_msg(__func__, xdr);
4384 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004385}
4386
4387static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
4388{
Andy Adamson05d564f2008-12-23 16:06:15 -05004389 __be32 *p;
Jeff Laytonaa53ed52007-06-05 14:49:03 -04004390 uint32_t savewords, bmlen, i;
Andy Adamson05d564f2008-12-23 16:06:15 -05004391 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004392
Andy Adamson05d564f2008-12-23 16:06:15 -05004393 status = decode_op_hdr(xdr, OP_OPEN);
Trond Myklebustc1d51932008-04-07 13:20:54 -04004394 if (status != -EIO)
4395 nfs_increment_open_seqid(status, res->seqid);
Benny Halevy07d30432009-08-14 17:19:52 +03004396 if (!status)
4397 status = decode_stateid(xdr, &res->stateid);
4398 if (unlikely(status))
Andy Adamson05d564f2008-12-23 16:06:15 -05004399 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004400
Andy Adamson05d564f2008-12-23 16:06:15 -05004401 decode_change_info(xdr, &res->cinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004402
Benny Halevyc0eae662009-08-14 17:20:14 +03004403 p = xdr_inline_decode(xdr, 8);
4404 if (unlikely(!p))
4405 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03004406 res->rflags = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03004407 bmlen = be32_to_cpup(p);
Andy Adamson05d564f2008-12-23 16:06:15 -05004408 if (bmlen > 10)
4409 goto xdr_error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004410
Benny Halevyc0eae662009-08-14 17:20:14 +03004411 p = xdr_inline_decode(xdr, bmlen << 2);
4412 if (unlikely(!p))
4413 goto out_overflow;
Jeff Laytonaa53ed52007-06-05 14:49:03 -04004414 savewords = min_t(uint32_t, bmlen, NFS4_BITMAP_SIZE);
4415 for (i = 0; i < savewords; ++i)
Benny Halevy6f723f72009-08-14 17:19:37 +03004416 res->attrset[i] = be32_to_cpup(p++);
Jeff Laytonaa53ed52007-06-05 14:49:03 -04004417 for (; i < NFS4_BITMAP_SIZE; i++)
4418 res->attrset[i] = 0;
4419
Linus Torvalds1da177e2005-04-16 15:20:36 -07004420 return decode_delegation(xdr, res);
4421xdr_error:
Harvey Harrison3110ff82008-05-02 13:42:44 -07004422 dprintk("%s: Bitmap too large! Length = %u\n", __func__, bmlen);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004423 return -EIO;
Benny Halevyc0eae662009-08-14 17:20:14 +03004424out_overflow:
4425 print_overflow_msg(__func__, xdr);
4426 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004427}
4428
4429static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
4430{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004431 int status;
4432
Andy Adamson05d564f2008-12-23 16:06:15 -05004433 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
Trond Myklebustc1d51932008-04-07 13:20:54 -04004434 if (status != -EIO)
4435 nfs_increment_open_seqid(status, res->seqid);
Benny Halevy07d30432009-08-14 17:19:52 +03004436 if (!status)
4437 status = decode_stateid(xdr, &res->stateid);
4438 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004439}
4440
4441static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
4442{
Linus Torvalds1da177e2005-04-16 15:20:36 -07004443 int status;
4444
4445 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
Trond Myklebustc1d51932008-04-07 13:20:54 -04004446 if (status != -EIO)
4447 nfs_increment_open_seqid(status, res->seqid);
Benny Halevy07d30432009-08-14 17:19:52 +03004448 if (!status)
4449 status = decode_stateid(xdr, &res->stateid);
4450 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004451}
4452
4453static int decode_putfh(struct xdr_stream *xdr)
4454{
4455 return decode_op_hdr(xdr, OP_PUTFH);
4456}
4457
4458static int decode_putrootfh(struct xdr_stream *xdr)
4459{
4460 return decode_op_hdr(xdr, OP_PUTROOTFH);
4461}
4462
4463static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
4464{
4465 struct kvec *iov = req->rq_rcv_buf.head;
Al Viro8687b632006-10-19 23:28:48 -07004466 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004467 uint32_t count, eof, recvd, hdrlen;
4468 int status;
4469
4470 status = decode_op_hdr(xdr, OP_READ);
4471 if (status)
4472 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03004473 p = xdr_inline_decode(xdr, 8);
4474 if (unlikely(!p))
4475 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03004476 eof = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03004477 count = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004478 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
4479 recvd = req->rq_rcv_buf.len - hdrlen;
4480 if (count > recvd) {
Chuck Leverfe82a182007-09-11 18:01:10 -04004481 dprintk("NFS: server cheating in read reply: "
Linus Torvalds1da177e2005-04-16 15:20:36 -07004482 "count %u > recvd %u\n", count, recvd);
4483 count = recvd;
4484 eof = 0;
4485 }
4486 xdr_read_pages(xdr, count);
4487 res->eof = eof;
4488 res->count = count;
4489 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004490out_overflow:
4491 print_overflow_msg(__func__, xdr);
4492 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004493}
4494
4495static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
4496{
4497 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004498 struct kvec *iov = rcvbuf->head;
Chuck Leverbcecff72007-10-26 13:32:03 -04004499 size_t hdrlen;
4500 u32 recvd, pglen = rcvbuf->page_len;
Chuck Leverbcecff72007-10-26 13:32:03 -04004501 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004502
4503 status = decode_op_hdr(xdr, OP_READDIR);
Benny Halevydb942bb2009-08-14 17:19:56 +03004504 if (!status)
4505 status = decode_verifier(xdr, readdir->verifier.data);
4506 if (unlikely(status))
Linus Torvalds1da177e2005-04-16 15:20:36 -07004507 return status;
Fred Isaman44109242008-04-02 15:21:15 +03004508 dprintk("%s: verifier = %08x:%08x\n",
4509 __func__,
Trond Myklebusteadf4592005-06-22 17:16:39 +00004510 ((u32 *)readdir->verifier.data)[0],
4511 ((u32 *)readdir->verifier.data)[1]);
4512
Linus Torvalds1da177e2005-04-16 15:20:36 -07004513
Benny Halevydb942bb2009-08-14 17:19:56 +03004514 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004515 recvd = rcvbuf->len - hdrlen;
4516 if (pglen > recvd)
4517 pglen = recvd;
4518 xdr_read_pages(xdr, pglen);
4519
Jeff Layton7bda2cd2008-02-22 14:50:01 -05004520
Trond Myklebustac396122010-11-15 20:26:22 -05004521 return pglen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004522}
4523
4524static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
4525{
4526 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
4527 struct kvec *iov = rcvbuf->head;
Chuck Leverbcecff72007-10-26 13:32:03 -04004528 size_t hdrlen;
4529 u32 len, recvd;
Al Viro8687b632006-10-19 23:28:48 -07004530 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004531 int status;
4532
4533 status = decode_op_hdr(xdr, OP_READLINK);
4534 if (status)
4535 return status;
4536
4537 /* Convert length of symlink */
Benny Halevyc0eae662009-08-14 17:20:14 +03004538 p = xdr_inline_decode(xdr, 4);
4539 if (unlikely(!p))
4540 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004541 len = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004542 if (len >= rcvbuf->page_len || len <= 0) {
Chuck Leverfe82a182007-09-11 18:01:10 -04004543 dprintk("nfs: server returned giant symlink!\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07004544 return -ENAMETOOLONG;
4545 }
4546 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
4547 recvd = req->rq_rcv_buf.len - hdrlen;
4548 if (recvd < len) {
Chuck Leverfe82a182007-09-11 18:01:10 -04004549 dprintk("NFS: server cheating in readlink reply: "
Linus Torvalds1da177e2005-04-16 15:20:36 -07004550 "count %u > recvd %u\n", len, recvd);
4551 return -EIO;
4552 }
4553 xdr_read_pages(xdr, len);
4554 /*
4555 * The XDR encode routine has set things up so that
4556 * the link text will be copied directly into the
4557 * buffer. We just have to do overflow-checking,
4558 * and and null-terminate the text (the VFS expects
4559 * null-termination).
4560 */
Chuck Leverb4687da2010-09-21 16:55:48 -04004561 xdr_terminate_string(rcvbuf, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004562 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004563out_overflow:
4564 print_overflow_msg(__func__, xdr);
4565 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004566}
4567
4568static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
4569{
4570 int status;
4571
4572 status = decode_op_hdr(xdr, OP_REMOVE);
4573 if (status)
4574 goto out;
4575 status = decode_change_info(xdr, cinfo);
4576out:
4577 return status;
4578}
4579
4580static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
4581 struct nfs4_change_info *new_cinfo)
4582{
4583 int status;
4584
4585 status = decode_op_hdr(xdr, OP_RENAME);
4586 if (status)
4587 goto out;
4588 if ((status = decode_change_info(xdr, old_cinfo)))
4589 goto out;
4590 status = decode_change_info(xdr, new_cinfo);
4591out:
4592 return status;
4593}
4594
4595static int decode_renew(struct xdr_stream *xdr)
4596{
4597 return decode_op_hdr(xdr, OP_RENEW);
4598}
4599
Trond Myklebust56ae19f2005-10-27 22:12:40 -04004600static int
4601decode_restorefh(struct xdr_stream *xdr)
4602{
4603 return decode_op_hdr(xdr, OP_RESTOREFH);
4604}
4605
J. Bruce Fields029d1052005-06-22 17:16:22 +00004606static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
4607 size_t *acl_len)
4608{
Al Viro8687b632006-10-19 23:28:48 -07004609 __be32 *savep;
J. Bruce Fields029d1052005-06-22 17:16:22 +00004610 uint32_t attrlen,
4611 bitmap[2] = {0};
4612 struct kvec *iov = req->rq_rcv_buf.head;
4613 int status;
4614
4615 *acl_len = 0;
4616 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
4617 goto out;
4618 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
4619 goto out;
4620 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
4621 goto out;
4622
4623 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
4624 return -EIO;
4625 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
Chuck Leverbcecff72007-10-26 13:32:03 -04004626 size_t hdrlen;
4627 u32 recvd;
J. Bruce Fields029d1052005-06-22 17:16:22 +00004628
4629 /* We ignore &savep and don't do consistency checks on
4630 * the attr length. Let userspace figure it out.... */
4631 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
4632 recvd = req->rq_rcv_buf.len - hdrlen;
4633 if (attrlen > recvd) {
Chuck Leverfe82a182007-09-11 18:01:10 -04004634 dprintk("NFS: server cheating in getattr"
J. Bruce Fields029d1052005-06-22 17:16:22 +00004635 " acl reply: attrlen %u > recvd %u\n",
4636 attrlen, recvd);
4637 return -EINVAL;
4638 }
J. Bruce Fieldsc04871e2006-05-30 16:28:58 -04004639 xdr_read_pages(xdr, attrlen);
J. Bruce Fields029d1052005-06-22 17:16:22 +00004640 *acl_len = attrlen;
J. Bruce Fields8c233cf2005-10-13 16:54:27 -04004641 } else
4642 status = -EOPNOTSUPP;
J. Bruce Fields029d1052005-06-22 17:16:22 +00004643
4644out:
4645 return status;
4646}
4647
Linus Torvalds1da177e2005-04-16 15:20:36 -07004648static int
4649decode_savefh(struct xdr_stream *xdr)
4650{
4651 return decode_op_hdr(xdr, OP_SAVEFH);
4652}
4653
Benny Halevy9e9ecc02009-04-01 09:22:00 -04004654static int decode_setattr(struct xdr_stream *xdr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004655{
Al Viro8687b632006-10-19 23:28:48 -07004656 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004657 uint32_t bmlen;
4658 int status;
4659
Linus Torvalds1da177e2005-04-16 15:20:36 -07004660 status = decode_op_hdr(xdr, OP_SETATTR);
4661 if (status)
4662 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03004663 p = xdr_inline_decode(xdr, 4);
4664 if (unlikely(!p))
4665 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004666 bmlen = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03004667 p = xdr_inline_decode(xdr, bmlen << 2);
4668 if (likely(p))
4669 return 0;
4670out_overflow:
4671 print_overflow_msg(__func__, xdr);
4672 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004673}
4674
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04004675static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_setclientid_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004676{
Al Viro8687b632006-10-19 23:28:48 -07004677 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004678 uint32_t opnum;
4679 int32_t nfserr;
4680
Benny Halevyc0eae662009-08-14 17:20:14 +03004681 p = xdr_inline_decode(xdr, 8);
4682 if (unlikely(!p))
4683 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03004684 opnum = be32_to_cpup(p++);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004685 if (opnum != OP_SETCLIENTID) {
Chuck Leverfe82a182007-09-11 18:01:10 -04004686 dprintk("nfs: decode_setclientid: Server returned operation"
Andy Adamson6c0195a2008-12-23 16:06:15 -05004687 " %d\n", opnum);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004688 return -EIO;
4689 }
Benny Halevycccddf42009-08-14 17:20:19 +03004690 nfserr = be32_to_cpup(p);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004691 if (nfserr == NFS_OK) {
Benny Halevyc0eae662009-08-14 17:20:14 +03004692 p = xdr_inline_decode(xdr, 8 + NFS4_VERIFIER_SIZE);
4693 if (unlikely(!p))
4694 goto out_overflow;
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04004695 p = xdr_decode_hyper(p, &res->clientid);
4696 memcpy(res->confirm.data, p, NFS4_VERIFIER_SIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004697 } else if (nfserr == NFSERR_CLID_INUSE) {
4698 uint32_t len;
4699
4700 /* skip netid string */
Benny Halevyc0eae662009-08-14 17:20:14 +03004701 p = xdr_inline_decode(xdr, 4);
4702 if (unlikely(!p))
4703 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004704 len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03004705 p = xdr_inline_decode(xdr, len);
4706 if (unlikely(!p))
4707 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004708
4709 /* skip uaddr string */
Benny Halevyc0eae662009-08-14 17:20:14 +03004710 p = xdr_inline_decode(xdr, 4);
4711 if (unlikely(!p))
4712 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004713 len = be32_to_cpup(p);
Benny Halevyc0eae662009-08-14 17:20:14 +03004714 p = xdr_inline_decode(xdr, len);
4715 if (unlikely(!p))
4716 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004717 return -NFSERR_CLID_INUSE;
4718 } else
Benny Halevy856dff32008-03-31 17:39:06 +03004719 return nfs4_stat_to_errno(nfserr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004720
4721 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004722out_overflow:
4723 print_overflow_msg(__func__, xdr);
4724 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004725}
4726
4727static int decode_setclientid_confirm(struct xdr_stream *xdr)
4728{
4729 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
4730}
4731
4732static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
4733{
Al Viro8687b632006-10-19 23:28:48 -07004734 __be32 *p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004735 int status;
4736
4737 status = decode_op_hdr(xdr, OP_WRITE);
4738 if (status)
4739 return status;
4740
Benny Halevyc0eae662009-08-14 17:20:14 +03004741 p = xdr_inline_decode(xdr, 16);
4742 if (unlikely(!p))
4743 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03004744 res->count = be32_to_cpup(p++);
4745 res->verf->committed = be32_to_cpup(p++);
Benny Halevy99398d02009-08-14 17:20:05 +03004746 memcpy(res->verf->verifier, p, 8);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004747 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004748out_overflow:
4749 print_overflow_msg(__func__, xdr);
4750 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004751}
4752
4753static int decode_delegreturn(struct xdr_stream *xdr)
4754{
4755 return decode_op_hdr(xdr, OP_DELEGRETURN);
4756}
4757
Benny Halevy99fe60d2009-04-01 09:22:29 -04004758#if defined(CONFIG_NFS_V4_1)
4759static int decode_exchange_id(struct xdr_stream *xdr,
4760 struct nfs41_exchange_id_res *res)
4761{
4762 __be32 *p;
4763 uint32_t dummy;
Benny Halevy2460ba52009-08-14 17:20:10 +03004764 char *dummy_str;
Benny Halevy99fe60d2009-04-01 09:22:29 -04004765 int status;
4766 struct nfs_client *clp = res->client;
4767
4768 status = decode_op_hdr(xdr, OP_EXCHANGE_ID);
4769 if (status)
4770 return status;
4771
Benny Halevyc0eae662009-08-14 17:20:14 +03004772 p = xdr_inline_decode(xdr, 8);
4773 if (unlikely(!p))
4774 goto out_overflow;
Benny Halevycccddf42009-08-14 17:20:19 +03004775 xdr_decode_hyper(p, &clp->cl_ex_clid);
Benny Halevyc0eae662009-08-14 17:20:14 +03004776 p = xdr_inline_decode(xdr, 12);
4777 if (unlikely(!p))
4778 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03004779 clp->cl_seqid = be32_to_cpup(p++);
4780 clp->cl_exchange_flags = be32_to_cpup(p++);
Benny Halevy99fe60d2009-04-01 09:22:29 -04004781
4782 /* We ask for SP4_NONE */
Benny Halevycccddf42009-08-14 17:20:19 +03004783 dummy = be32_to_cpup(p);
Benny Halevy99fe60d2009-04-01 09:22:29 -04004784 if (dummy != SP4_NONE)
4785 return -EIO;
4786
4787 /* Throw away minor_id */
Benny Halevyc0eae662009-08-14 17:20:14 +03004788 p = xdr_inline_decode(xdr, 8);
4789 if (unlikely(!p))
4790 goto out_overflow;
Benny Halevy99fe60d2009-04-01 09:22:29 -04004791
4792 /* Throw away Major id */
Benny Halevy2460ba52009-08-14 17:20:10 +03004793 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4794 if (unlikely(status))
4795 return status;
Benny Halevy99fe60d2009-04-01 09:22:29 -04004796
4797 /* Throw away server_scope */
Benny Halevy2460ba52009-08-14 17:20:10 +03004798 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4799 if (unlikely(status))
4800 return status;
Benny Halevy99fe60d2009-04-01 09:22:29 -04004801
4802 /* Throw away Implementation id array */
Benny Halevy2460ba52009-08-14 17:20:10 +03004803 status = decode_opaque_inline(xdr, &dummy, &dummy_str);
4804 if (unlikely(status))
4805 return status;
Benny Halevy99fe60d2009-04-01 09:22:29 -04004806
4807 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004808out_overflow:
4809 print_overflow_msg(__func__, xdr);
4810 return -EIO;
Benny Halevy99fe60d2009-04-01 09:22:29 -04004811}
Andy Adamsonfc931582009-04-01 09:22:31 -04004812
4813static int decode_chan_attrs(struct xdr_stream *xdr,
4814 struct nfs4_channel_attrs *attrs)
4815{
4816 __be32 *p;
4817 u32 nr_attrs;
4818
Benny Halevyc0eae662009-08-14 17:20:14 +03004819 p = xdr_inline_decode(xdr, 28);
4820 if (unlikely(!p))
4821 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03004822 attrs->headerpadsz = be32_to_cpup(p++);
4823 attrs->max_rqst_sz = be32_to_cpup(p++);
4824 attrs->max_resp_sz = be32_to_cpup(p++);
4825 attrs->max_resp_sz_cached = be32_to_cpup(p++);
4826 attrs->max_ops = be32_to_cpup(p++);
4827 attrs->max_reqs = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03004828 nr_attrs = be32_to_cpup(p);
Andy Adamsonfc931582009-04-01 09:22:31 -04004829 if (unlikely(nr_attrs > 1)) {
4830 printk(KERN_WARNING "%s: Invalid rdma channel attrs count %u\n",
4831 __func__, nr_attrs);
4832 return -EINVAL;
4833 }
Benny Halevyc0eae662009-08-14 17:20:14 +03004834 if (nr_attrs == 1) {
4835 p = xdr_inline_decode(xdr, 4); /* skip rdma_attrs */
4836 if (unlikely(!p))
4837 goto out_overflow;
4838 }
Andy Adamsonfc931582009-04-01 09:22:31 -04004839 return 0;
Benny Halevyc0eae662009-08-14 17:20:14 +03004840out_overflow:
4841 print_overflow_msg(__func__, xdr);
4842 return -EIO;
Andy Adamsonfc931582009-04-01 09:22:31 -04004843}
4844
Benny Halevye78291e2009-08-14 17:20:00 +03004845static int decode_sessionid(struct xdr_stream *xdr, struct nfs4_sessionid *sid)
4846{
4847 return decode_opaque_fixed(xdr, sid->data, NFS4_MAX_SESSIONID_LEN);
Andy Adamsonfc931582009-04-01 09:22:31 -04004848}
4849
4850static int decode_create_session(struct xdr_stream *xdr,
4851 struct nfs41_create_session_res *res)
4852{
4853 __be32 *p;
4854 int status;
4855 struct nfs_client *clp = res->client;
4856 struct nfs4_session *session = clp->cl_session;
4857
4858 status = decode_op_hdr(xdr, OP_CREATE_SESSION);
Benny Halevye78291e2009-08-14 17:20:00 +03004859 if (!status)
4860 status = decode_sessionid(xdr, &session->sess_id);
4861 if (unlikely(status))
Andy Adamsonfc931582009-04-01 09:22:31 -04004862 return status;
4863
Andy Adamsonfc931582009-04-01 09:22:31 -04004864 /* seqid, flags */
Benny Halevyc0eae662009-08-14 17:20:14 +03004865 p = xdr_inline_decode(xdr, 8);
4866 if (unlikely(!p))
4867 goto out_overflow;
Benny Halevy6f723f72009-08-14 17:19:37 +03004868 clp->cl_seqid = be32_to_cpup(p++);
Benny Halevycccddf42009-08-14 17:20:19 +03004869 session->flags = be32_to_cpup(p);
Andy Adamsonfc931582009-04-01 09:22:31 -04004870
4871 /* Channel attributes */
4872 status = decode_chan_attrs(xdr, &session->fc_attrs);
4873 if (!status)
4874 status = decode_chan_attrs(xdr, &session->bc_attrs);
4875 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03004876out_overflow:
4877 print_overflow_msg(__func__, xdr);
4878 return -EIO;
Andy Adamsonfc931582009-04-01 09:22:31 -04004879}
Andy Adamson0f3e66c2009-04-01 09:22:34 -04004880
4881static int decode_destroy_session(struct xdr_stream *xdr, void *dummy)
4882{
4883 return decode_op_hdr(xdr, OP_DESTROY_SESSION);
4884}
Ricardo Labiaga180197532009-12-05 16:08:40 -05004885
4886static int decode_reclaim_complete(struct xdr_stream *xdr, void *dummy)
4887{
4888 return decode_op_hdr(xdr, OP_RECLAIM_COMPLETE);
4889}
Benny Halevy99fe60d2009-04-01 09:22:29 -04004890#endif /* CONFIG_NFS_V4_1 */
4891
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04004892static int decode_sequence(struct xdr_stream *xdr,
4893 struct nfs4_sequence_res *res,
4894 struct rpc_rqst *rqstp)
4895{
4896#if defined(CONFIG_NFS_V4_1)
Andy Adamsonfc01cea2009-04-01 09:22:36 -04004897 struct nfs4_sessionid id;
4898 u32 dummy;
4899 int status;
4900 __be32 *p;
4901
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04004902 if (!res->sr_session)
4903 return 0;
4904
Andy Adamsonfc01cea2009-04-01 09:22:36 -04004905 status = decode_op_hdr(xdr, OP_SEQUENCE);
Benny Halevye78291e2009-08-14 17:20:00 +03004906 if (!status)
4907 status = decode_sessionid(xdr, &id);
4908 if (unlikely(status))
Andy Adamsonfc01cea2009-04-01 09:22:36 -04004909 goto out_err;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04004910
Andy Adamsonfc01cea2009-04-01 09:22:36 -04004911 /*
4912 * If the server returns different values for sessionID, slotID or
4913 * sequence number, the server is looney tunes.
4914 */
Trond Myklebustfdcb4572010-02-08 09:32:40 -05004915 status = -EREMOTEIO;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04004916
Andy Adamsonfc01cea2009-04-01 09:22:36 -04004917 if (memcmp(id.data, res->sr_session->sess_id.data,
4918 NFS4_MAX_SESSIONID_LEN)) {
4919 dprintk("%s Invalid session id\n", __func__);
4920 goto out_err;
4921 }
Benny Halevye78291e2009-08-14 17:20:00 +03004922
Benny Halevyc0eae662009-08-14 17:20:14 +03004923 p = xdr_inline_decode(xdr, 20);
4924 if (unlikely(!p))
4925 goto out_overflow;
Benny Halevye78291e2009-08-14 17:20:00 +03004926
Andy Adamsonfc01cea2009-04-01 09:22:36 -04004927 /* seqid */
Benny Halevy6f723f72009-08-14 17:19:37 +03004928 dummy = be32_to_cpup(p++);
Benny Halevydfb4f3092010-09-24 09:17:01 -04004929 if (dummy != res->sr_slot->seq_nr) {
Andy Adamsonfc01cea2009-04-01 09:22:36 -04004930 dprintk("%s Invalid sequence number\n", __func__);
4931 goto out_err;
4932 }
4933 /* slot id */
Benny Halevy6f723f72009-08-14 17:19:37 +03004934 dummy = be32_to_cpup(p++);
Benny Halevydfb4f3092010-09-24 09:17:01 -04004935 if (dummy != res->sr_slot - res->sr_session->fc_slot_table.slots) {
Andy Adamsonfc01cea2009-04-01 09:22:36 -04004936 dprintk("%s Invalid slot id\n", __func__);
4937 goto out_err;
4938 }
4939 /* highest slot id - currently not processed */
Benny Halevy6f723f72009-08-14 17:19:37 +03004940 dummy = be32_to_cpup(p++);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04004941 /* target highest slot id - currently not processed */
Benny Halevy6f723f72009-08-14 17:19:37 +03004942 dummy = be32_to_cpup(p++);
Alexandros Batsakis0629e372009-12-05 13:46:14 -05004943 /* result flags */
4944 res->sr_status_flags = be32_to_cpup(p);
Andy Adamsonfc01cea2009-04-01 09:22:36 -04004945 status = 0;
4946out_err:
4947 res->sr_status = status;
4948 return status;
Benny Halevyc0eae662009-08-14 17:20:14 +03004949out_overflow:
4950 print_overflow_msg(__func__, xdr);
4951 status = -EIO;
4952 goto out_err;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04004953#else /* CONFIG_NFS_V4_1 */
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04004954 return 0;
Andy Adamsonfc01cea2009-04-01 09:22:36 -04004955#endif /* CONFIG_NFS_V4_1 */
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04004956}
4957
Andy Adamsonb1f69b72010-10-20 00:18:03 -04004958#if defined(CONFIG_NFS_V4_1)
4959
4960static int decode_getdeviceinfo(struct xdr_stream *xdr,
4961 struct pnfs_device *pdev)
4962{
4963 __be32 *p;
4964 uint32_t len, type;
4965 int status;
4966
4967 status = decode_op_hdr(xdr, OP_GETDEVICEINFO);
4968 if (status) {
4969 if (status == -ETOOSMALL) {
4970 p = xdr_inline_decode(xdr, 4);
4971 if (unlikely(!p))
4972 goto out_overflow;
4973 pdev->mincount = be32_to_cpup(p);
4974 dprintk("%s: Min count too small. mincnt = %u\n",
4975 __func__, pdev->mincount);
4976 }
4977 return status;
4978 }
4979
4980 p = xdr_inline_decode(xdr, 8);
4981 if (unlikely(!p))
4982 goto out_overflow;
4983 type = be32_to_cpup(p++);
4984 if (type != pdev->layout_type) {
4985 dprintk("%s: layout mismatch req: %u pdev: %u\n",
4986 __func__, pdev->layout_type, type);
4987 return -EINVAL;
4988 }
4989 /*
4990 * Get the length of the opaque device_addr4. xdr_read_pages places
4991 * the opaque device_addr4 in the xdr_buf->pages (pnfs_device->pages)
4992 * and places the remaining xdr data in xdr_buf->tail
4993 */
4994 pdev->mincount = be32_to_cpup(p);
4995 xdr_read_pages(xdr, pdev->mincount); /* include space for the length */
4996
4997 /* Parse notification bitmap, verifying that it is zero. */
4998 p = xdr_inline_decode(xdr, 4);
4999 if (unlikely(!p))
5000 goto out_overflow;
5001 len = be32_to_cpup(p);
5002 if (len) {
5003 int i;
5004
5005 p = xdr_inline_decode(xdr, 4 * len);
5006 if (unlikely(!p))
5007 goto out_overflow;
5008 for (i = 0; i < len; i++, p++) {
5009 if (be32_to_cpup(p)) {
5010 dprintk("%s: notifications not supported\n",
5011 __func__);
5012 return -EIO;
5013 }
5014 }
5015 }
5016 return 0;
5017out_overflow:
5018 print_overflow_msg(__func__, xdr);
5019 return -EIO;
5020}
5021
5022static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
5023 struct nfs4_layoutget_res *res)
5024{
5025 __be32 *p;
5026 int status;
5027 u32 layout_count;
5028
5029 status = decode_op_hdr(xdr, OP_LAYOUTGET);
5030 if (status)
5031 return status;
5032 p = xdr_inline_decode(xdr, 8 + NFS4_STATEID_SIZE);
5033 if (unlikely(!p))
5034 goto out_overflow;
5035 res->return_on_close = be32_to_cpup(p++);
5036 p = xdr_decode_opaque_fixed(p, res->stateid.data, NFS4_STATEID_SIZE);
5037 layout_count = be32_to_cpup(p);
5038 if (!layout_count) {
5039 dprintk("%s: server responded with empty layout array\n",
5040 __func__);
5041 return -EINVAL;
5042 }
5043
5044 p = xdr_inline_decode(xdr, 24);
5045 if (unlikely(!p))
5046 goto out_overflow;
5047 p = xdr_decode_hyper(p, &res->range.offset);
5048 p = xdr_decode_hyper(p, &res->range.length);
5049 res->range.iomode = be32_to_cpup(p++);
5050 res->type = be32_to_cpup(p++);
5051
5052 status = decode_opaque_inline(xdr, &res->layout.len, (char **)&p);
5053 if (unlikely(status))
5054 return status;
5055
5056 dprintk("%s roff:%lu rlen:%lu riomode:%d, lo_type:0x%x, lo.len:%d\n",
5057 __func__,
5058 (unsigned long)res->range.offset,
5059 (unsigned long)res->range.length,
5060 res->range.iomode,
5061 res->type,
5062 res->layout.len);
5063
5064 /* nfs4_proc_layoutget allocated a single page */
5065 if (res->layout.len > PAGE_SIZE)
5066 return -ENOMEM;
5067 memcpy(res->layout.buf, p, res->layout.len);
5068
5069 if (layout_count > 1) {
5070 /* We only handle a length one array at the moment. Any
5071 * further entries are just ignored. Note that this means
5072 * the client may see a response that is less than the
5073 * minimum it requested.
5074 */
5075 dprintk("%s: server responded with %d layouts, dropping tail\n",
5076 __func__, layout_count);
5077 }
5078
5079 return 0;
5080out_overflow:
5081 print_overflow_msg(__func__, xdr);
5082 return -EIO;
5083}
5084#endif /* CONFIG_NFS_V4_1 */
5085
Linus Torvalds1da177e2005-04-16 15:20:36 -07005086/*
Benny Halevy49c25592008-12-23 16:06:16 -05005087 * END OF "GENERIC" DECODE ROUTINES.
5088 */
5089
5090/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07005091 * Decode OPEN_DOWNGRADE response
5092 */
Al Viro8687b632006-10-19 23:28:48 -07005093static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005094{
Andy Adamson05d564f2008-12-23 16:06:15 -05005095 struct xdr_stream xdr;
5096 struct compound_hdr hdr;
5097 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005098
Andy Adamson05d564f2008-12-23 16:06:15 -05005099 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5100 status = decode_compound_hdr(&xdr, &hdr);
5101 if (status)
5102 goto out;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005103 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5104 if (status)
5105 goto out;
Andy Adamson05d564f2008-12-23 16:06:15 -05005106 status = decode_putfh(&xdr);
5107 if (status)
5108 goto out;
5109 status = decode_open_downgrade(&xdr, res);
Trond Myklebust516a6af2005-10-27 22:12:41 -04005110 if (status != 0)
5111 goto out;
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005112 decode_getfattr(&xdr, res->fattr, res->server,
5113 !RPC_IS_ASYNC(rqstp->rq_task));
Linus Torvalds1da177e2005-04-16 15:20:36 -07005114out:
Andy Adamson05d564f2008-12-23 16:06:15 -05005115 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005116}
5117
5118/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07005119 * Decode ACCESS response
5120 */
Al Viro8687b632006-10-19 23:28:48 -07005121static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_accessres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005122{
5123 struct xdr_stream xdr;
5124 struct compound_hdr hdr;
5125 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05005126
Linus Torvalds1da177e2005-04-16 15:20:36 -07005127 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005128 status = decode_compound_hdr(&xdr, &hdr);
5129 if (status)
5130 goto out;
5131 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5132 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005133 goto out;
Trond Myklebust76b32992007-08-10 17:45:11 -04005134 status = decode_putfh(&xdr);
5135 if (status != 0)
5136 goto out;
5137 status = decode_access(&xdr, res);
5138 if (status != 0)
5139 goto out;
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005140 decode_getfattr(&xdr, res->fattr, res->server,
5141 !RPC_IS_ASYNC(rqstp->rq_task));
Linus Torvalds1da177e2005-04-16 15:20:36 -07005142out:
5143 return status;
5144}
5145
5146/*
5147 * Decode LOOKUP response
5148 */
Al Viro8687b632006-10-19 23:28:48 -07005149static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005150{
5151 struct xdr_stream xdr;
5152 struct compound_hdr hdr;
5153 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05005154
Linus Torvalds1da177e2005-04-16 15:20:36 -07005155 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005156 status = decode_compound_hdr(&xdr, &hdr);
5157 if (status)
5158 goto out;
5159 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5160 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005161 goto out;
5162 if ((status = decode_putfh(&xdr)) != 0)
5163 goto out;
5164 if ((status = decode_lookup(&xdr)) != 0)
5165 goto out;
5166 if ((status = decode_getfh(&xdr, res->fh)) != 0)
5167 goto out;
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005168 status = decode_getfattr(&xdr, res->fattr, res->server
5169 ,!RPC_IS_ASYNC(rqstp->rq_task));
Linus Torvalds1da177e2005-04-16 15:20:36 -07005170out:
5171 return status;
5172}
5173
5174/*
5175 * Decode LOOKUP_ROOT response
5176 */
Al Viro8687b632006-10-19 23:28:48 -07005177static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_lookup_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005178{
5179 struct xdr_stream xdr;
5180 struct compound_hdr hdr;
5181 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05005182
Linus Torvalds1da177e2005-04-16 15:20:36 -07005183 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005184 status = decode_compound_hdr(&xdr, &hdr);
5185 if (status)
5186 goto out;
5187 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5188 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005189 goto out;
5190 if ((status = decode_putrootfh(&xdr)) != 0)
5191 goto out;
5192 if ((status = decode_getfh(&xdr, res->fh)) == 0)
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005193 status = decode_getfattr(&xdr, res->fattr, res->server,
5194 !RPC_IS_ASYNC(rqstp->rq_task));
Linus Torvalds1da177e2005-04-16 15:20:36 -07005195out:
5196 return status;
5197}
5198
5199/*
5200 * Decode REMOVE response
5201 */
Trond Myklebust4fdc17b2007-07-14 15:39:57 -04005202static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, __be32 *p, struct nfs_removeres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005203{
5204 struct xdr_stream xdr;
5205 struct compound_hdr hdr;
5206 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05005207
Linus Torvalds1da177e2005-04-16 15:20:36 -07005208 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005209 status = decode_compound_hdr(&xdr, &hdr);
5210 if (status)
5211 goto out;
5212 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5213 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005214 goto out;
Trond Myklebust16e42952005-10-27 22:12:44 -04005215 if ((status = decode_putfh(&xdr)) != 0)
5216 goto out;
5217 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
5218 goto out;
Trond Myklebustd3468902010-04-16 16:22:50 -04005219 decode_getfattr(&xdr, res->dir_attr, res->server,
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005220 !RPC_IS_ASYNC(rqstp->rq_task));
Linus Torvalds1da177e2005-04-16 15:20:36 -07005221out:
5222 return status;
5223}
5224
5225/*
5226 * Decode RENAME response
5227 */
Jeff Laytone8582a82010-09-17 17:31:06 -04005228static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, __be32 *p, struct nfs_renameres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005229{
5230 struct xdr_stream xdr;
5231 struct compound_hdr hdr;
5232 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05005233
Linus Torvalds1da177e2005-04-16 15:20:36 -07005234 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005235 status = decode_compound_hdr(&xdr, &hdr);
5236 if (status)
5237 goto out;
5238 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5239 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005240 goto out;
5241 if ((status = decode_putfh(&xdr)) != 0)
5242 goto out;
5243 if ((status = decode_savefh(&xdr)) != 0)
5244 goto out;
5245 if ((status = decode_putfh(&xdr)) != 0)
5246 goto out;
Trond Myklebust6caf2c82005-10-27 22:12:43 -04005247 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
5248 goto out;
5249 /* Current FH is target directory */
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005250 if (decode_getfattr(&xdr, res->new_fattr, res->server,
5251 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
Trond Myklebust6caf2c82005-10-27 22:12:43 -04005252 goto out;
5253 if ((status = decode_restorefh(&xdr)) != 0)
5254 goto out;
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005255 decode_getfattr(&xdr, res->old_fattr, res->server,
5256 !RPC_IS_ASYNC(rqstp->rq_task));
Linus Torvalds1da177e2005-04-16 15:20:36 -07005257out:
5258 return status;
5259}
5260
5261/*
5262 * Decode LINK response
5263 */
Al Viro8687b632006-10-19 23:28:48 -07005264static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_link_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005265{
5266 struct xdr_stream xdr;
5267 struct compound_hdr hdr;
5268 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05005269
Linus Torvalds1da177e2005-04-16 15:20:36 -07005270 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005271 status = decode_compound_hdr(&xdr, &hdr);
5272 if (status)
5273 goto out;
5274 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5275 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005276 goto out;
5277 if ((status = decode_putfh(&xdr)) != 0)
5278 goto out;
5279 if ((status = decode_savefh(&xdr)) != 0)
5280 goto out;
5281 if ((status = decode_putfh(&xdr)) != 0)
5282 goto out;
Trond Myklebust91ba2ee2005-10-27 22:12:42 -04005283 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
5284 goto out;
5285 /*
5286 * Note order: OP_LINK leaves the directory as the current
5287 * filehandle.
5288 */
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005289 if (decode_getfattr(&xdr, res->dir_attr, res->server,
5290 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
Trond Myklebust91ba2ee2005-10-27 22:12:42 -04005291 goto out;
5292 if ((status = decode_restorefh(&xdr)) != 0)
5293 goto out;
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005294 decode_getfattr(&xdr, res->fattr, res->server,
5295 !RPC_IS_ASYNC(rqstp->rq_task));
Linus Torvalds1da177e2005-04-16 15:20:36 -07005296out:
5297 return status;
5298}
5299
5300/*
5301 * Decode CREATE response
5302 */
Al Viro8687b632006-10-19 23:28:48 -07005303static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005304{
5305 struct xdr_stream xdr;
5306 struct compound_hdr hdr;
5307 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05005308
Linus Torvalds1da177e2005-04-16 15:20:36 -07005309 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005310 status = decode_compound_hdr(&xdr, &hdr);
5311 if (status)
5312 goto out;
5313 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5314 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005315 goto out;
5316 if ((status = decode_putfh(&xdr)) != 0)
5317 goto out;
Trond Myklebust56ae19f2005-10-27 22:12:40 -04005318 if ((status = decode_savefh(&xdr)) != 0)
5319 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005320 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
5321 goto out;
5322 if ((status = decode_getfh(&xdr, res->fh)) != 0)
5323 goto out;
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005324 if (decode_getfattr(&xdr, res->fattr, res->server,
5325 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
Trond Myklebust56ae19f2005-10-27 22:12:40 -04005326 goto out;
5327 if ((status = decode_restorefh(&xdr)) != 0)
5328 goto out;
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005329 decode_getfattr(&xdr, res->dir_fattr, res->server,
5330 !RPC_IS_ASYNC(rqstp->rq_task));
Linus Torvalds1da177e2005-04-16 15:20:36 -07005331out:
5332 return status;
5333}
5334
5335/*
5336 * Decode SYMLINK response
5337 */
Al Viro8687b632006-10-19 23:28:48 -07005338static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_create_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005339{
5340 return nfs4_xdr_dec_create(rqstp, p, res);
5341}
5342
5343/*
5344 * Decode GETATTR response
5345 */
Al Viro8687b632006-10-19 23:28:48 -07005346static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_getattr_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005347{
5348 struct xdr_stream xdr;
5349 struct compound_hdr hdr;
5350 int status;
Andy Adamson6c0195a2008-12-23 16:06:15 -05005351
Linus Torvalds1da177e2005-04-16 15:20:36 -07005352 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5353 status = decode_compound_hdr(&xdr, &hdr);
5354 if (status)
5355 goto out;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005356 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5357 if (status)
5358 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005359 status = decode_putfh(&xdr);
5360 if (status)
5361 goto out;
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005362 status = decode_getfattr(&xdr, res->fattr, res->server,
5363 !RPC_IS_ASYNC(rqstp->rq_task));
Linus Torvalds1da177e2005-04-16 15:20:36 -07005364out:
5365 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005366}
5367
J. Bruce Fields23ec6962005-06-22 17:16:22 +00005368/*
5369 * Encode an SETACL request
5370 */
5371static int
Al Viro8687b632006-10-19 23:28:48 -07005372nfs4_xdr_enc_setacl(struct rpc_rqst *req, __be32 *p, struct nfs_setaclargs *args)
J. Bruce Fields23ec6962005-06-22 17:16:22 +00005373{
Andy Adamson05d564f2008-12-23 16:06:15 -05005374 struct xdr_stream xdr;
5375 struct compound_hdr hdr = {
Benny Halevy66cc0422009-04-01 09:22:10 -04005376 .minorversion = nfs4_xdr_minorversion(&args->seq_args),
Andy Adamson05d564f2008-12-23 16:06:15 -05005377 };
5378 int status;
J. Bruce Fields23ec6962005-06-22 17:16:22 +00005379
Andy Adamson05d564f2008-12-23 16:06:15 -05005380 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
Benny Halevy0c4e8c12009-04-01 09:22:07 -04005381 encode_compound_hdr(&xdr, req, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005382 encode_sequence(&xdr, &args->seq_args, &hdr);
Andy Adamsoncf8cdbe2008-12-23 16:06:18 -05005383 encode_putfh(&xdr, args->fh, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05005384 status = encode_setacl(&xdr, args, &hdr);
Andy Adamsond0179312008-12-23 16:06:17 -05005385 encode_nops(&hdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05005386 return status;
J. Bruce Fields23ec6962005-06-22 17:16:22 +00005387}
Andy Adamson05d564f2008-12-23 16:06:15 -05005388
J. Bruce Fields23ec6962005-06-22 17:16:22 +00005389/*
5390 * Decode SETACL response
5391 */
5392static int
Benny Halevy73c403a2009-04-01 09:22:01 -04005393nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, __be32 *p,
5394 struct nfs_setaclres *res)
J. Bruce Fields23ec6962005-06-22 17:16:22 +00005395{
5396 struct xdr_stream xdr;
5397 struct compound_hdr hdr;
5398 int status;
5399
5400 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5401 status = decode_compound_hdr(&xdr, &hdr);
5402 if (status)
5403 goto out;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005404 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5405 if (status)
5406 goto out;
J. Bruce Fields23ec6962005-06-22 17:16:22 +00005407 status = decode_putfh(&xdr);
5408 if (status)
5409 goto out;
Benny Halevy9e9ecc02009-04-01 09:22:00 -04005410 status = decode_setattr(&xdr);
J. Bruce Fields23ec6962005-06-22 17:16:22 +00005411out:
5412 return status;
5413}
Linus Torvalds1da177e2005-04-16 15:20:36 -07005414
5415/*
J. Bruce Fields029d1052005-06-22 17:16:22 +00005416 * Decode GETACL response
5417 */
5418static int
Benny Halevy663c79b2009-04-01 09:21:59 -04005419nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, __be32 *p,
5420 struct nfs_getaclres *res)
J. Bruce Fields029d1052005-06-22 17:16:22 +00005421{
5422 struct xdr_stream xdr;
5423 struct compound_hdr hdr;
5424 int status;
5425
5426 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5427 status = decode_compound_hdr(&xdr, &hdr);
5428 if (status)
5429 goto out;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005430 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5431 if (status)
5432 goto out;
J. Bruce Fields029d1052005-06-22 17:16:22 +00005433 status = decode_putfh(&xdr);
5434 if (status)
5435 goto out;
Benny Halevy663c79b2009-04-01 09:21:59 -04005436 status = decode_getacl(&xdr, rqstp, &res->acl_len);
J. Bruce Fields029d1052005-06-22 17:16:22 +00005437
5438out:
5439 return status;
5440}
5441
5442/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07005443 * Decode CLOSE response
5444 */
Al Viro8687b632006-10-19 23:28:48 -07005445static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, __be32 *p, struct nfs_closeres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005446{
Andy Adamson05d564f2008-12-23 16:06:15 -05005447 struct xdr_stream xdr;
5448 struct compound_hdr hdr;
5449 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005450
Andy Adamson05d564f2008-12-23 16:06:15 -05005451 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5452 status = decode_compound_hdr(&xdr, &hdr);
5453 if (status)
5454 goto out;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005455 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5456 if (status)
5457 goto out;
Andy Adamson05d564f2008-12-23 16:06:15 -05005458 status = decode_putfh(&xdr);
5459 if (status)
5460 goto out;
5461 status = decode_close(&xdr, res);
Trond Myklebust516a6af2005-10-27 22:12:41 -04005462 if (status != 0)
5463 goto out;
5464 /*
5465 * Note: Server may do delete on close for this file
5466 * in which case the getattr call will fail with
5467 * an ESTALE error. Shouldn't be a problem,
5468 * though, since fattr->valid will remain unset.
5469 */
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005470 decode_getfattr(&xdr, res->fattr, res->server,
5471 !RPC_IS_ASYNC(rqstp->rq_task));
Linus Torvalds1da177e2005-04-16 15:20:36 -07005472out:
Andy Adamson05d564f2008-12-23 16:06:15 -05005473 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005474}
5475
5476/*
5477 * Decode OPEN response
5478 */
Al Viro8687b632006-10-19 23:28:48 -07005479static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005480{
Andy Adamson05d564f2008-12-23 16:06:15 -05005481 struct xdr_stream xdr;
5482 struct compound_hdr hdr;
5483 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005484
Andy Adamson05d564f2008-12-23 16:06:15 -05005485 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5486 status = decode_compound_hdr(&xdr, &hdr);
Trond Myklebust56ae19f2005-10-27 22:12:40 -04005487 if (status)
5488 goto out;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005489 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5490 if (status)
5491 goto out;
Andy Adamson05d564f2008-12-23 16:06:15 -05005492 status = decode_putfh(&xdr);
5493 if (status)
5494 goto out;
5495 status = decode_savefh(&xdr);
5496 if (status)
5497 goto out;
5498 status = decode_open(&xdr, res);
5499 if (status)
5500 goto out;
Trond Myklebust99367812007-07-17 21:52:41 -04005501 if (decode_getfh(&xdr, &res->fh) != 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005502 goto out;
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005503 if (decode_getfattr(&xdr, res->f_attr, res->server,
5504 !RPC_IS_ASYNC(rqstp->rq_task)) != 0)
Trond Myklebust56ae19f2005-10-27 22:12:40 -04005505 goto out;
Trond Myklebust365c8f52007-07-17 21:52:37 -04005506 if (decode_restorefh(&xdr) != 0)
Trond Myklebust56ae19f2005-10-27 22:12:40 -04005507 goto out;
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005508 decode_getfattr(&xdr, res->dir_attr, res->server,
5509 !RPC_IS_ASYNC(rqstp->rq_task));
Linus Torvalds1da177e2005-04-16 15:20:36 -07005510out:
Andy Adamson05d564f2008-12-23 16:06:15 -05005511 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005512}
5513
5514/*
5515 * Decode OPEN_CONFIRM response
5516 */
Al Viro8687b632006-10-19 23:28:48 -07005517static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, __be32 *p, struct nfs_open_confirmres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005518{
Andy Adamson05d564f2008-12-23 16:06:15 -05005519 struct xdr_stream xdr;
5520 struct compound_hdr hdr;
5521 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005522
Andy Adamson05d564f2008-12-23 16:06:15 -05005523 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5524 status = decode_compound_hdr(&xdr, &hdr);
5525 if (status)
5526 goto out;
5527 status = decode_putfh(&xdr);
5528 if (status)
5529 goto out;
5530 status = decode_open_confirm(&xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005531out:
Andy Adamson05d564f2008-12-23 16:06:15 -05005532 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005533}
5534
5535/*
5536 * Decode OPEN response
5537 */
Al Viro8687b632006-10-19 23:28:48 -07005538static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_openres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005539{
Andy Adamson05d564f2008-12-23 16:06:15 -05005540 struct xdr_stream xdr;
5541 struct compound_hdr hdr;
5542 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005543
Andy Adamson05d564f2008-12-23 16:06:15 -05005544 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5545 status = decode_compound_hdr(&xdr, &hdr);
5546 if (status)
5547 goto out;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005548 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5549 if (status)
5550 goto out;
Andy Adamson05d564f2008-12-23 16:06:15 -05005551 status = decode_putfh(&xdr);
5552 if (status)
5553 goto out;
5554 status = decode_open(&xdr, res);
5555 if (status)
5556 goto out;
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005557 decode_getfattr(&xdr, res->f_attr, res->server,
5558 !RPC_IS_ASYNC(rqstp->rq_task));
Linus Torvalds1da177e2005-04-16 15:20:36 -07005559out:
Andy Adamson05d564f2008-12-23 16:06:15 -05005560 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005561}
5562
5563/*
5564 * Decode SETATTR response
5565 */
Al Viro8687b632006-10-19 23:28:48 -07005566static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, __be32 *p, struct nfs_setattrres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005567{
Andy Adamson05d564f2008-12-23 16:06:15 -05005568 struct xdr_stream xdr;
5569 struct compound_hdr hdr;
5570 int status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005571
Andy Adamson05d564f2008-12-23 16:06:15 -05005572 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5573 status = decode_compound_hdr(&xdr, &hdr);
5574 if (status)
5575 goto out;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005576 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5577 if (status)
5578 goto out;
Andy Adamson05d564f2008-12-23 16:06:15 -05005579 status = decode_putfh(&xdr);
5580 if (status)
5581 goto out;
Benny Halevy9e9ecc02009-04-01 09:22:00 -04005582 status = decode_setattr(&xdr);
Andy Adamson05d564f2008-12-23 16:06:15 -05005583 if (status)
5584 goto out;
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005585 decode_getfattr(&xdr, res->fattr, res->server,
5586 !RPC_IS_ASYNC(rqstp->rq_task));
Linus Torvalds1da177e2005-04-16 15:20:36 -07005587out:
Andy Adamson05d564f2008-12-23 16:06:15 -05005588 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005589}
5590
5591/*
5592 * Decode LOCK response
5593 */
Al Viro8687b632006-10-19 23:28:48 -07005594static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lock_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005595{
5596 struct xdr_stream xdr;
5597 struct compound_hdr hdr;
5598 int status;
5599
5600 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5601 status = decode_compound_hdr(&xdr, &hdr);
5602 if (status)
5603 goto out;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005604 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5605 if (status)
5606 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005607 status = decode_putfh(&xdr);
5608 if (status)
5609 goto out;
5610 status = decode_lock(&xdr, res);
5611out:
5612 return status;
5613}
5614
5615/*
5616 * Decode LOCKT response
5617 */
Al Viro8687b632006-10-19 23:28:48 -07005618static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, __be32 *p, struct nfs_lockt_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005619{
5620 struct xdr_stream xdr;
5621 struct compound_hdr hdr;
5622 int status;
5623
5624 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5625 status = decode_compound_hdr(&xdr, &hdr);
5626 if (status)
5627 goto out;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005628 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5629 if (status)
5630 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005631 status = decode_putfh(&xdr);
5632 if (status)
5633 goto out;
5634 status = decode_lockt(&xdr, res);
5635out:
5636 return status;
5637}
5638
5639/*
5640 * Decode LOCKU response
5641 */
Al Viro8687b632006-10-19 23:28:48 -07005642static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, __be32 *p, struct nfs_locku_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005643{
5644 struct xdr_stream xdr;
5645 struct compound_hdr hdr;
5646 int status;
5647
5648 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5649 status = decode_compound_hdr(&xdr, &hdr);
5650 if (status)
5651 goto out;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005652 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5653 if (status)
5654 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005655 status = decode_putfh(&xdr);
5656 if (status)
5657 goto out;
5658 status = decode_locku(&xdr, res);
5659out:
5660 return status;
5661}
5662
Trond Myklebustd3c7b7c2010-07-01 12:49:01 -04005663static int nfs4_xdr_dec_release_lockowner(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
5664{
5665 struct xdr_stream xdr;
5666 struct compound_hdr hdr;
5667 int status;
5668
5669 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5670 status = decode_compound_hdr(&xdr, &hdr);
5671 if (!status)
5672 status = decode_release_lockowner(&xdr);
5673 return status;
5674}
5675
Linus Torvalds1da177e2005-04-16 15:20:36 -07005676/*
5677 * Decode READLINK response
5678 */
Benny Halevyf50c7002009-04-01 09:21:55 -04005679static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, __be32 *p,
5680 struct nfs4_readlink_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005681{
5682 struct xdr_stream xdr;
5683 struct compound_hdr hdr;
5684 int status;
5685
5686 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5687 status = decode_compound_hdr(&xdr, &hdr);
5688 if (status)
5689 goto out;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005690 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5691 if (status)
5692 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005693 status = decode_putfh(&xdr);
5694 if (status)
5695 goto out;
5696 status = decode_readlink(&xdr, rqstp);
5697out:
5698 return status;
5699}
5700
5701/*
5702 * Decode READDIR response
5703 */
Al Viro8687b632006-10-19 23:28:48 -07005704static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_readdir_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005705{
5706 struct xdr_stream xdr;
5707 struct compound_hdr hdr;
5708 int status;
5709
5710 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5711 status = decode_compound_hdr(&xdr, &hdr);
5712 if (status)
5713 goto out;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005714 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5715 if (status)
5716 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005717 status = decode_putfh(&xdr);
5718 if (status)
5719 goto out;
5720 status = decode_readdir(&xdr, rqstp, res);
5721out:
5722 return status;
5723}
5724
5725/*
5726 * Decode Read response
5727 */
Al Viro8687b632006-10-19 23:28:48 -07005728static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, __be32 *p, struct nfs_readres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005729{
5730 struct xdr_stream xdr;
5731 struct compound_hdr hdr;
5732 int status;
5733
5734 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5735 status = decode_compound_hdr(&xdr, &hdr);
5736 if (status)
5737 goto out;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005738 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5739 if (status)
5740 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005741 status = decode_putfh(&xdr);
5742 if (status)
5743 goto out;
5744 status = decode_read(&xdr, rqstp, res);
5745 if (!status)
5746 status = res->count;
5747out:
5748 return status;
5749}
5750
5751/*
5752 * Decode WRITE response
5753 */
Al Viro8687b632006-10-19 23:28:48 -07005754static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005755{
5756 struct xdr_stream xdr;
5757 struct compound_hdr hdr;
5758 int status;
5759
5760 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5761 status = decode_compound_hdr(&xdr, &hdr);
5762 if (status)
5763 goto out;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005764 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5765 if (status)
5766 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005767 status = decode_putfh(&xdr);
5768 if (status)
5769 goto out;
5770 status = decode_write(&xdr, res);
Trond Myklebust4f9838c2005-10-27 22:12:44 -04005771 if (status)
5772 goto out;
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005773 decode_getfattr(&xdr, res->fattr, res->server,
5774 !RPC_IS_ASYNC(rqstp->rq_task));
Linus Torvalds1da177e2005-04-16 15:20:36 -07005775 if (!status)
5776 status = res->count;
5777out:
5778 return status;
5779}
5780
5781/*
5782 * Decode COMMIT response
5783 */
Al Viro8687b632006-10-19 23:28:48 -07005784static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, __be32 *p, struct nfs_writeres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005785{
5786 struct xdr_stream xdr;
5787 struct compound_hdr hdr;
5788 int status;
5789
5790 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5791 status = decode_compound_hdr(&xdr, &hdr);
5792 if (status)
5793 goto out;
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005794 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5795 if (status)
5796 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005797 status = decode_putfh(&xdr);
5798 if (status)
5799 goto out;
5800 status = decode_commit(&xdr, res);
Trond Myklebust4f9838c2005-10-27 22:12:44 -04005801 if (status)
5802 goto out;
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005803 decode_getfattr(&xdr, res->fattr, res->server,
5804 !RPC_IS_ASYNC(rqstp->rq_task));
Linus Torvalds1da177e2005-04-16 15:20:36 -07005805out:
5806 return status;
5807}
5808
5809/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05005810 * Decode FSINFO response
Linus Torvalds1da177e2005-04-16 15:20:36 -07005811 */
Benny Halevy3dda5e42009-04-01 09:21:57 -04005812static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, __be32 *p,
5813 struct nfs4_fsinfo_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005814{
5815 struct xdr_stream xdr;
5816 struct compound_hdr hdr;
5817 int status;
5818
5819 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5820 status = decode_compound_hdr(&xdr, &hdr);
5821 if (!status)
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005822 status = decode_sequence(&xdr, &res->seq_res, req);
5823 if (!status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005824 status = decode_putfh(&xdr);
5825 if (!status)
Benny Halevy3dda5e42009-04-01 09:21:57 -04005826 status = decode_fsinfo(&xdr, res->fsinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005827 return status;
5828}
5829
5830/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05005831 * Decode PATHCONF response
Linus Torvalds1da177e2005-04-16 15:20:36 -07005832 */
Benny Halevyd45b2982009-04-01 09:21:58 -04005833static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, __be32 *p,
5834 struct nfs4_pathconf_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005835{
5836 struct xdr_stream xdr;
5837 struct compound_hdr hdr;
5838 int status;
5839
5840 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5841 status = decode_compound_hdr(&xdr, &hdr);
5842 if (!status)
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005843 status = decode_sequence(&xdr, &res->seq_res, req);
5844 if (!status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005845 status = decode_putfh(&xdr);
5846 if (!status)
Benny Halevyd45b2982009-04-01 09:21:58 -04005847 status = decode_pathconf(&xdr, res->pathconf);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005848 return status;
5849}
5850
5851/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05005852 * Decode STATFS response
Linus Torvalds1da177e2005-04-16 15:20:36 -07005853 */
Benny Halevy24ad1482009-04-01 09:21:56 -04005854static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, __be32 *p,
5855 struct nfs4_statfs_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005856{
5857 struct xdr_stream xdr;
5858 struct compound_hdr hdr;
5859 int status;
5860
5861 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5862 status = decode_compound_hdr(&xdr, &hdr);
5863 if (!status)
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005864 status = decode_sequence(&xdr, &res->seq_res, req);
5865 if (!status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005866 status = decode_putfh(&xdr);
5867 if (!status)
Benny Halevy24ad1482009-04-01 09:21:56 -04005868 status = decode_statfs(&xdr, res->fsstat);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005869 return status;
5870}
5871
5872/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05005873 * Decode GETATTR_BITMAP response
Linus Torvalds1da177e2005-04-16 15:20:36 -07005874 */
Al Viro8687b632006-10-19 23:28:48 -07005875static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, __be32 *p, struct nfs4_server_caps_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005876{
5877 struct xdr_stream xdr;
5878 struct compound_hdr hdr;
5879 int status;
5880
5881 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005882 status = decode_compound_hdr(&xdr, &hdr);
5883 if (status)
5884 goto out;
5885 status = decode_sequence(&xdr, &res->seq_res, req);
5886 if (status)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005887 goto out;
5888 if ((status = decode_putfh(&xdr)) != 0)
5889 goto out;
5890 status = decode_server_caps(&xdr, res);
5891out:
5892 return status;
5893}
5894
5895/*
5896 * Decode RENEW response
5897 */
Al Viro8687b632006-10-19 23:28:48 -07005898static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, __be32 *p, void *dummy)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005899{
5900 struct xdr_stream xdr;
5901 struct compound_hdr hdr;
5902 int status;
5903
5904 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5905 status = decode_compound_hdr(&xdr, &hdr);
5906 if (!status)
5907 status = decode_renew(&xdr);
5908 return status;
5909}
5910
5911/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05005912 * Decode SETCLIENTID response
Linus Torvalds1da177e2005-04-16 15:20:36 -07005913 */
Al Viro8687b632006-10-19 23:28:48 -07005914static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, __be32 *p,
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04005915 struct nfs4_setclientid_res *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005916{
5917 struct xdr_stream xdr;
5918 struct compound_hdr hdr;
5919 int status;
5920
5921 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5922 status = decode_compound_hdr(&xdr, &hdr);
5923 if (!status)
Trond Myklebustbb8b27e2010-04-16 16:43:06 -04005924 status = decode_setclientid(&xdr, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005925 return status;
5926}
5927
5928/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05005929 * Decode SETCLIENTID_CONFIRM response
Linus Torvalds1da177e2005-04-16 15:20:36 -07005930 */
Al Viro8687b632006-10-19 23:28:48 -07005931static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *fsinfo)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005932{
5933 struct xdr_stream xdr;
5934 struct compound_hdr hdr;
5935 int status;
5936
5937 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5938 status = decode_compound_hdr(&xdr, &hdr);
5939 if (!status)
5940 status = decode_setclientid_confirm(&xdr);
5941 if (!status)
5942 status = decode_putrootfh(&xdr);
5943 if (!status)
5944 status = decode_fsinfo(&xdr, fsinfo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005945 return status;
5946}
5947
5948/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05005949 * Decode DELEGRETURN response
Linus Torvalds1da177e2005-04-16 15:20:36 -07005950 */
Al Viro8687b632006-10-19 23:28:48 -07005951static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, __be32 *p, struct nfs4_delegreturnres *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07005952{
5953 struct xdr_stream xdr;
5954 struct compound_hdr hdr;
5955 int status;
5956
5957 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
5958 status = decode_compound_hdr(&xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005959 if (status)
5960 goto out;
5961 status = decode_sequence(&xdr, &res->seq_res, rqstp);
5962 if (status)
Trond Myklebustfa178f22006-01-03 09:55:38 +01005963 goto out;
5964 status = decode_putfh(&xdr);
5965 if (status != 0)
5966 goto out;
5967 status = decode_delegreturn(&xdr);
Jeff Layton556ae3b2010-03-21 12:10:36 -04005968 if (status != 0)
5969 goto out;
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005970 decode_getfattr(&xdr, res->fattr, res->server,
5971 !RPC_IS_ASYNC(rqstp->rq_task));
Trond Myklebustfa178f22006-01-03 09:55:38 +01005972out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07005973 return status;
5974}
5975
Trond Myklebust683b57b2006-06-09 09:34:22 -04005976/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05005977 * Decode FS_LOCATIONS response
Trond Myklebust683b57b2006-06-09 09:34:22 -04005978 */
Benny Halevy22958462009-04-01 09:22:02 -04005979static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, __be32 *p,
5980 struct nfs4_fs_locations_res *res)
Trond Myklebust683b57b2006-06-09 09:34:22 -04005981{
5982 struct xdr_stream xdr;
5983 struct compound_hdr hdr;
5984 int status;
5985
5986 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
5987 status = decode_compound_hdr(&xdr, &hdr);
Andy Adamson9b7b9fc2009-04-01 09:22:11 -04005988 if (status)
5989 goto out;
5990 status = decode_sequence(&xdr, &res->seq_res, req);
5991 if (status)
Trond Myklebust683b57b2006-06-09 09:34:22 -04005992 goto out;
5993 if ((status = decode_putfh(&xdr)) != 0)
5994 goto out;
5995 if ((status = decode_lookup(&xdr)) != 0)
5996 goto out;
5997 xdr_enter_page(&xdr, PAGE_SIZE);
Benny Halevy22958462009-04-01 09:22:02 -04005998 status = decode_getfattr(&xdr, &res->fs_locations->fattr,
Trond Myklebust80e52ac2009-08-09 15:06:19 -04005999 res->fs_locations->server,
6000 !RPC_IS_ASYNC(req->rq_task));
Trond Myklebust683b57b2006-06-09 09:34:22 -04006001out:
6002 return status;
6003}
6004
Benny Halevy99fe60d2009-04-01 09:22:29 -04006005#if defined(CONFIG_NFS_V4_1)
6006/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006007 * Decode EXCHANGE_ID response
Benny Halevy99fe60d2009-04-01 09:22:29 -04006008 */
6009static int nfs4_xdr_dec_exchange_id(struct rpc_rqst *rqstp, uint32_t *p,
6010 void *res)
6011{
6012 struct xdr_stream xdr;
6013 struct compound_hdr hdr;
6014 int status;
6015
6016 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
6017 status = decode_compound_hdr(&xdr, &hdr);
6018 if (!status)
6019 status = decode_exchange_id(&xdr, res);
6020 return status;
6021}
Andy Adamson2050f0c2009-04-01 09:22:30 -04006022
6023/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006024 * Decode CREATE_SESSION response
Andy Adamsonfc931582009-04-01 09:22:31 -04006025 */
6026static int nfs4_xdr_dec_create_session(struct rpc_rqst *rqstp, uint32_t *p,
6027 struct nfs41_create_session_res *res)
6028{
6029 struct xdr_stream xdr;
6030 struct compound_hdr hdr;
6031 int status;
6032
6033 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
6034 status = decode_compound_hdr(&xdr, &hdr);
6035 if (!status)
6036 status = decode_create_session(&xdr, res);
6037 return status;
6038}
6039
6040/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006041 * Decode DESTROY_SESSION response
Andy Adamson0f3e66c2009-04-01 09:22:34 -04006042 */
6043static int nfs4_xdr_dec_destroy_session(struct rpc_rqst *rqstp, uint32_t *p,
6044 void *dummy)
6045{
6046 struct xdr_stream xdr;
6047 struct compound_hdr hdr;
6048 int status;
6049
6050 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
6051 status = decode_compound_hdr(&xdr, &hdr);
6052 if (!status)
6053 status = decode_destroy_session(&xdr, dummy);
6054 return status;
6055}
6056
6057/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006058 * Decode SEQUENCE response
Andy Adamsonfc01cea2009-04-01 09:22:36 -04006059 */
6060static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, uint32_t *p,
6061 struct nfs4_sequence_res *res)
6062{
6063 struct xdr_stream xdr;
6064 struct compound_hdr hdr;
6065 int status;
6066
6067 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
6068 status = decode_compound_hdr(&xdr, &hdr);
6069 if (!status)
6070 status = decode_sequence(&xdr, res, rqstp);
6071 return status;
6072}
6073
6074/*
Ricardo Labiaga8b173212009-12-05 16:08:39 -05006075 * Decode GET_LEASE_TIME response
Andy Adamson2050f0c2009-04-01 09:22:30 -04006076 */
6077static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, uint32_t *p,
6078 struct nfs4_get_lease_time_res *res)
6079{
6080 struct xdr_stream xdr;
6081 struct compound_hdr hdr;
6082 int status;
6083
6084 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
6085 status = decode_compound_hdr(&xdr, &hdr);
6086 if (!status)
6087 status = decode_sequence(&xdr, &res->lr_seq_res, rqstp);
6088 if (!status)
6089 status = decode_putrootfh(&xdr);
6090 if (!status)
6091 status = decode_fsinfo(&xdr, res->lr_fsinfo);
6092 return status;
6093}
Ricardo Labiaga180197532009-12-05 16:08:40 -05006094
6095/*
6096 * Decode RECLAIM_COMPLETE response
6097 */
6098static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, uint32_t *p,
6099 struct nfs41_reclaim_complete_res *res)
6100{
6101 struct xdr_stream xdr;
6102 struct compound_hdr hdr;
6103 int status;
6104
6105 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
6106 status = decode_compound_hdr(&xdr, &hdr);
6107 if (!status)
6108 status = decode_sequence(&xdr, &res->seq_res, rqstp);
6109 if (!status)
6110 status = decode_reclaim_complete(&xdr, (void *)NULL);
6111 return status;
6112}
Andy Adamsonb1f69b72010-10-20 00:18:03 -04006113
6114/*
6115 * Decode GETDEVINFO response
6116 */
6117static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, uint32_t *p,
6118 struct nfs4_getdeviceinfo_res *res)
6119{
6120 struct xdr_stream xdr;
6121 struct compound_hdr hdr;
6122 int status;
6123
6124 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
6125 status = decode_compound_hdr(&xdr, &hdr);
6126 if (status != 0)
6127 goto out;
6128 status = decode_sequence(&xdr, &res->seq_res, rqstp);
6129 if (status != 0)
6130 goto out;
6131 status = decode_getdeviceinfo(&xdr, res->pdev);
6132out:
6133 return status;
6134}
6135
6136/*
6137 * Decode LAYOUTGET response
6138 */
6139static int nfs4_xdr_dec_layoutget(struct rpc_rqst *rqstp, uint32_t *p,
6140 struct nfs4_layoutget_res *res)
6141{
6142 struct xdr_stream xdr;
6143 struct compound_hdr hdr;
6144 int status;
6145
6146 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
6147 status = decode_compound_hdr(&xdr, &hdr);
6148 if (status)
6149 goto out;
6150 status = decode_sequence(&xdr, &res->seq_res, rqstp);
6151 if (status)
6152 goto out;
6153 status = decode_putfh(&xdr);
6154 if (status)
6155 goto out;
6156 status = decode_layoutget(&xdr, rqstp, res);
6157out:
6158 return status;
6159}
Benny Halevy99fe60d2009-04-01 09:22:29 -04006160#endif /* CONFIG_NFS_V4_1 */
6161
Bryan Schumaker82f2e542010-10-21 16:33:18 -04006162__be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
6163 struct nfs_server *server, int plus)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006164{
6165 uint32_t bitmap[2] = {0};
6166 uint32_t len;
Bryan Schumakerbabddc72010-10-20 15:44:29 -04006167 __be32 *p = xdr_inline_decode(xdr, 4);
6168 if (unlikely(!p))
6169 goto out_overflow;
6170 if (!ntohl(*p++)) {
6171 p = xdr_inline_decode(xdr, 4);
6172 if (unlikely(!p))
6173 goto out_overflow;
6174 if (!ntohl(*p++))
Linus Torvalds1da177e2005-04-16 15:20:36 -07006175 return ERR_PTR(-EAGAIN);
6176 entry->eof = 1;
6177 return ERR_PTR(-EBADCOOKIE);
6178 }
6179
Bryan Schumakerbabddc72010-10-20 15:44:29 -04006180 p = xdr_inline_decode(xdr, 12);
6181 if (unlikely(!p))
6182 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006183 entry->prev_cookie = entry->cookie;
6184 p = xdr_decode_hyper(p, &entry->cookie);
6185 entry->len = ntohl(*p++);
Bryan Schumakerbabddc72010-10-20 15:44:29 -04006186
Trond Myklebust9af8c222010-10-24 11:52:55 -04006187 p = xdr_inline_decode(xdr, entry->len);
Bryan Schumakerbabddc72010-10-20 15:44:29 -04006188 if (unlikely(!p))
6189 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006190 entry->name = (const char *) p;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006191
6192 /*
6193 * In case the server doesn't return an inode number,
6194 * we fake one here. (We don't use inode number 0,
6195 * since glibc seems to choke on it...)
6196 */
6197 entry->ino = 1;
Trond Myklebust4f082222010-10-24 13:14:02 -04006198 entry->fattr->valid = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006199
Trond Myklebust9af8c222010-10-24 11:52:55 -04006200 if (decode_attr_bitmap(xdr, bitmap) < 0)
Bryan Schumakerbabddc72010-10-20 15:44:29 -04006201 goto out_overflow;
Trond Myklebust9af8c222010-10-24 11:52:55 -04006202
6203 if (decode_attr_length(xdr, &len, &p) < 0)
6204 goto out_overflow;
6205
6206 if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, server, 1) < 0)
6207 goto out_overflow;
6208 if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
6209 entry->ino = entry->fattr->fileid;
6210
Trond Myklebust0b26a0b2010-11-20 14:26:44 -05006211 entry->d_type = DT_UNKNOWN;
6212 if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE)
6213 entry->d_type = nfs_umode_to_dtype(entry->fattr->mode);
6214
Trond Myklebust9af8c222010-10-24 11:52:55 -04006215 if (verify_attr_len(xdr, p, len) < 0)
6216 goto out_overflow;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006217
Bryan Schumakerbabddc72010-10-20 15:44:29 -04006218 p = xdr_inline_peek(xdr, 8);
6219 if (p != NULL)
6220 entry->eof = !p[0] && p[1];
6221 else
6222 entry->eof = 0;
6223
Linus Torvalds1da177e2005-04-16 15:20:36 -07006224 return p;
Bryan Schumakerbabddc72010-10-20 15:44:29 -04006225
6226out_overflow:
6227 print_overflow_msg(__func__, xdr);
Trond Myklebust463a3762010-11-20 12:22:20 -05006228 return ERR_PTR(-EAGAIN);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006229}
6230
6231/*
6232 * We need to translate between nfs status return values and
6233 * the local errno values which may not be the same.
6234 */
6235static struct {
6236 int stat;
6237 int errno;
6238} nfs_errtbl[] = {
6239 { NFS4_OK, 0 },
Benny Halevy856dff32008-03-31 17:39:06 +03006240 { NFS4ERR_PERM, -EPERM },
6241 { NFS4ERR_NOENT, -ENOENT },
6242 { NFS4ERR_IO, -errno_NFSERR_IO},
6243 { NFS4ERR_NXIO, -ENXIO },
6244 { NFS4ERR_ACCESS, -EACCES },
6245 { NFS4ERR_EXIST, -EEXIST },
6246 { NFS4ERR_XDEV, -EXDEV },
6247 { NFS4ERR_NOTDIR, -ENOTDIR },
6248 { NFS4ERR_ISDIR, -EISDIR },
6249 { NFS4ERR_INVAL, -EINVAL },
6250 { NFS4ERR_FBIG, -EFBIG },
6251 { NFS4ERR_NOSPC, -ENOSPC },
6252 { NFS4ERR_ROFS, -EROFS },
6253 { NFS4ERR_MLINK, -EMLINK },
6254 { NFS4ERR_NAMETOOLONG, -ENAMETOOLONG },
6255 { NFS4ERR_NOTEMPTY, -ENOTEMPTY },
6256 { NFS4ERR_DQUOT, -EDQUOT },
6257 { NFS4ERR_STALE, -ESTALE },
6258 { NFS4ERR_BADHANDLE, -EBADHANDLE },
6259 { NFS4ERR_BADOWNER, -EINVAL },
6260 { NFS4ERR_BADNAME, -EINVAL },
6261 { NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
6262 { NFS4ERR_NOTSUPP, -ENOTSUPP },
6263 { NFS4ERR_TOOSMALL, -ETOOSMALL },
Trond Myklebustfdcb4572010-02-08 09:32:40 -05006264 { NFS4ERR_SERVERFAULT, -EREMOTEIO },
Benny Halevy856dff32008-03-31 17:39:06 +03006265 { NFS4ERR_BADTYPE, -EBADTYPE },
6266 { NFS4ERR_LOCKED, -EAGAIN },
Benny Halevy856dff32008-03-31 17:39:06 +03006267 { NFS4ERR_SYMLINK, -ELOOP },
6268 { NFS4ERR_OP_ILLEGAL, -EOPNOTSUPP },
6269 { NFS4ERR_DEADLOCK, -EDEADLK },
6270 { NFS4ERR_WRONGSEC, -EPERM }, /* FIXME: this needs
Linus Torvalds1da177e2005-04-16 15:20:36 -07006271 * to be handled by a
6272 * middle-layer.
6273 */
Benny Halevy856dff32008-03-31 17:39:06 +03006274 { -1, -EIO }
Linus Torvalds1da177e2005-04-16 15:20:36 -07006275};
6276
6277/*
6278 * Convert an NFS error code to a local one.
6279 * This one is used jointly by NFSv2 and NFSv3.
6280 */
6281static int
David Howells0a8ea432006-08-22 20:06:08 -04006282nfs4_stat_to_errno(int stat)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006283{
6284 int i;
6285 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
6286 if (nfs_errtbl[i].stat == stat)
6287 return nfs_errtbl[i].errno;
6288 }
6289 if (stat <= 10000 || stat > 10100) {
6290 /* The server is looney tunes. */
Trond Myklebustfdcb4572010-02-08 09:32:40 -05006291 return -EREMOTEIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006292 }
6293 /* If we cannot translate the error, the recovery routines should
6294 * handle it.
6295 * Note: remaining NFSv4 error codes have values > 10000, so should
6296 * not conflict with native Linux error codes.
6297 */
Benny Halevy856dff32008-03-31 17:39:06 +03006298 return -stat;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006299}
6300
Linus Torvalds1da177e2005-04-16 15:20:36 -07006301#define PROC(proc, argtype, restype) \
6302[NFSPROC4_CLNT_##proc] = { \
6303 .p_proc = NFSPROC4_COMPOUND, \
Chuck Lever7d93bd712010-12-14 14:57:42 +00006304 .p_encode = (kxdrproc_t)nfs4_xdr_##argtype, \
6305 .p_decode = (kxdrproc_t)nfs4_xdr_##restype, \
Chuck Lever2bea90d2007-03-29 16:47:53 -04006306 .p_arglen = NFS4_##argtype##_sz, \
6307 .p_replen = NFS4_##restype##_sz, \
Chuck Levercc0175c2006-03-20 13:44:22 -05006308 .p_statidx = NFSPROC4_CLNT_##proc, \
6309 .p_name = #proc, \
Andy Adamson05d564f2008-12-23 16:06:15 -05006310}
Linus Torvalds1da177e2005-04-16 15:20:36 -07006311
6312struct rpc_procinfo nfs4_procedures[] = {
Chuck Lever7d93bd712010-12-14 14:57:42 +00006313 PROC(READ, enc_read, dec_read),
6314 PROC(WRITE, enc_write, dec_write),
6315 PROC(COMMIT, enc_commit, dec_commit),
6316 PROC(OPEN, enc_open, dec_open),
6317 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
6318 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
6319 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
6320 PROC(CLOSE, enc_close, dec_close),
6321 PROC(SETATTR, enc_setattr, dec_setattr),
6322 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
6323 PROC(RENEW, enc_renew, dec_renew),
6324 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
6325 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
6326 PROC(LOCK, enc_lock, dec_lock),
6327 PROC(LOCKT, enc_lockt, dec_lockt),
6328 PROC(LOCKU, enc_locku, dec_locku),
6329 PROC(ACCESS, enc_access, dec_access),
6330 PROC(GETATTR, enc_getattr, dec_getattr),
6331 PROC(LOOKUP, enc_lookup, dec_lookup),
6332 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
6333 PROC(REMOVE, enc_remove, dec_remove),
6334 PROC(RENAME, enc_rename, dec_rename),
6335 PROC(LINK, enc_link, dec_link),
6336 PROC(SYMLINK, enc_symlink, dec_symlink),
6337 PROC(CREATE, enc_create, dec_create),
6338 PROC(PATHCONF, enc_pathconf, dec_pathconf),
6339 PROC(STATFS, enc_statfs, dec_statfs),
6340 PROC(READLINK, enc_readlink, dec_readlink),
6341 PROC(READDIR, enc_readdir, dec_readdir),
6342 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
6343 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
6344 PROC(GETACL, enc_getacl, dec_getacl),
6345 PROC(SETACL, enc_setacl, dec_setacl),
6346 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
6347 PROC(RELEASE_LOCKOWNER, enc_release_lockowner, dec_release_lockowner),
Benny Halevy99fe60d2009-04-01 09:22:29 -04006348#if defined(CONFIG_NFS_V4_1)
Chuck Lever7d93bd712010-12-14 14:57:42 +00006349 PROC(EXCHANGE_ID, enc_exchange_id, dec_exchange_id),
6350 PROC(CREATE_SESSION, enc_create_session, dec_create_session),
6351 PROC(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
6352 PROC(SEQUENCE, enc_sequence, dec_sequence),
6353 PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
6354 PROC(RECLAIM_COMPLETE, enc_reclaim_complete, dec_reclaim_complete),
6355 PROC(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
6356 PROC(LAYOUTGET, enc_layoutget, dec_layoutget),
Benny Halevy99fe60d2009-04-01 09:22:29 -04006357#endif /* CONFIG_NFS_V4_1 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07006358};
6359
6360struct rpc_version nfs_version4 = {
6361 .number = 4,
Tobias Klausere8c96f82006-03-24 03:15:34 -08006362 .nrprocs = ARRAY_SIZE(nfs4_procedures),
Linus Torvalds1da177e2005-04-16 15:20:36 -07006363 .procs = nfs4_procedures
6364};
6365
6366/*
6367 * Local variables:
6368 * c-basic-offset: 8
6369 * End:
6370 */